pixman mesa git update 1 Mar 2011

42 files changed, 27491 insertions, 27896 deletions

diff --git a/mesalib/src/glsl/ast_to_hir.cpp b/mesalib/src/glsl/ast_to_hir.cpp
index bef099cca..fd1f0b49f 100644
--- a/mesalib/src/glsl/ast_to_hir.cpp
+++ b/mesalib/src/glsl/ast_to_hir.cpp
@@ -3445,11 +3445,9 @@ ast_struct_specifier::hir(exec_list *instructions,
    if (!state->symbols->add_type(name, t)) {
       _mesa_glsl_error(& loc, state, "struct `%s' previously defined", name);
    } else {
-
-      const glsl_type **s = (const glsl_type **)
-	 realloc(state->user_structures,
-		 sizeof(state->user_structures[0]) *
-		 (state->num_user_structures + 1));
+      const glsl_type **s = reralloc(state, state->user_structures,
+				     const glsl_type *,
+				     state->num_user_structures + 1);
       if (s != NULL) {
 	 s[state->num_user_structures] = t;
 	 state->user_structures = s;
diff --git a/mesalib/src/glsl/builtin_types.h b/mesalib/src/glsl/builtin_types.h
index 1d00d65ee..58b9a8127 100644
--- a/mesalib/src/glsl/builtin_types.h
+++ b/mesalib/src/glsl/builtin_types.h
@@ -1,300 +1,302 @@
-/*

- * Copyright © 2009 Intel Corporation

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice (including the next

- * paragraph) shall be included in all copies or substantial portions of the

- * Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

- * DEALINGS IN THE SOFTWARE.

- */

-

-const glsl_type glsl_type::_error_type =

-   glsl_type(GL_INVALID_ENUM, GLSL_TYPE_ERROR, 0, 0, "");

-

-const glsl_type glsl_type::_void_type =

-   glsl_type(GL_INVALID_ENUM, GLSL_TYPE_VOID, 0, 0, "void");

-

-const glsl_type *const glsl_type::error_type = & glsl_type::_error_type;

-const glsl_type *const glsl_type::void_type = & glsl_type::_void_type;

-

-/** \name Core built-in types

- *

- * These types exist in all versions of GLSL.

- */

-/*@{*/

-

-const glsl_type glsl_type::builtin_core_types[] = {

-   glsl_type(GL_BOOL,         GLSL_TYPE_BOOL, 1, 1, "bool"),

-   glsl_type(GL_BOOL_VEC2,    GLSL_TYPE_BOOL, 2, 1, "bvec2"),

-   glsl_type(GL_BOOL_VEC3,    GLSL_TYPE_BOOL, 3, 1, "bvec3"),

-   glsl_type(GL_BOOL_VEC4,    GLSL_TYPE_BOOL, 4, 1, "bvec4"),

-   glsl_type(GL_INT,          GLSL_TYPE_INT, 1, 1, "int"),

-   glsl_type(GL_INT_VEC2,     GLSL_TYPE_INT, 2, 1, "ivec2"),

-   glsl_type(GL_INT_VEC3,     GLSL_TYPE_INT, 3, 1, "ivec3"),

-   glsl_type(GL_INT_VEC4,     GLSL_TYPE_INT, 4, 1, "ivec4"),

-   glsl_type(GL_FLOAT,        GLSL_TYPE_FLOAT, 1, 1, "float"),

-   glsl_type(GL_FLOAT_VEC2,   GLSL_TYPE_FLOAT, 2, 1, "vec2"),

-   glsl_type(GL_FLOAT_VEC3,   GLSL_TYPE_FLOAT, 3, 1, "vec3"),

-   glsl_type(GL_FLOAT_VEC4,   GLSL_TYPE_FLOAT, 4, 1, "vec4"),

-   glsl_type(GL_FLOAT_MAT2,   GLSL_TYPE_FLOAT, 2, 2, "mat2"),

-   glsl_type(GL_FLOAT_MAT3,   GLSL_TYPE_FLOAT, 3, 3, "mat3"),

-   glsl_type(GL_FLOAT_MAT4,   GLSL_TYPE_FLOAT, 4, 4, "mat4"),

-   glsl_type(GL_SAMPLER_2D,   GLSL_SAMPLER_DIM_2D, 0, 0, GLSL_TYPE_FLOAT,

-	     "sampler2D"),

-   glsl_type(GL_SAMPLER_CUBE, GLSL_SAMPLER_DIM_CUBE, 0, 0, GLSL_TYPE_FLOAT,

-	     "samplerCube"),

-};

-

-const glsl_type *const glsl_type::bool_type  = & builtin_core_types[0];

-const glsl_type *const glsl_type::int_type   = & builtin_core_types[4];

-const glsl_type *const glsl_type::ivec4_type = & builtin_core_types[7];

-const glsl_type *const glsl_type::float_type = & builtin_core_types[8];

-const glsl_type *const glsl_type::vec2_type = & builtin_core_types[9];

-const glsl_type *const glsl_type::vec3_type = & builtin_core_types[10];

-const glsl_type *const glsl_type::vec4_type = & builtin_core_types[11];

-const glsl_type *const glsl_type::mat2_type = & builtin_core_types[12];

-const glsl_type *const glsl_type::mat3_type = & builtin_core_types[13];

-const glsl_type *const glsl_type::mat4_type = & builtin_core_types[14];

-/*@}*/

-

-/** \name GLSL structures that have not been deprecated.

- */

-/*@{*/

-

-static const struct glsl_struct_field gl_DepthRangeParameters_fields[] = {

-   { glsl_type::float_type, "near" },

-   { glsl_type::float_type, "far" },

-   { glsl_type::float_type, "diff" },

-};

-

-const glsl_type glsl_type::builtin_structure_types[] = {

-   glsl_type(gl_DepthRangeParameters_fields,

-             Elements(gl_DepthRangeParameters_fields),

-             "gl_DepthRangeParameters"),

-};

-/*@}*/

-

-/** \name GLSL 1.00 / 1.10 structures that are deprecated in GLSL 1.30

- */

-/*@{*/

-

-static const struct glsl_struct_field gl_PointParameters_fields[] = {

-   { glsl_type::float_type, "size" },

-   { glsl_type::float_type, "sizeMin" },

-   { glsl_type::float_type, "sizeMax" },

-   { glsl_type::float_type, "fadeThresholdSize" },

-   { glsl_type::float_type, "distanceConstantAttenuation" },

-   { glsl_type::float_type, "distanceLinearAttenuation" },

-   { glsl_type::float_type, "distanceQuadraticAttenuation" },

-};

-

-static const struct glsl_struct_field gl_MaterialParameters_fields[] = {

-   { glsl_type::vec4_type, "emission" },

-   { glsl_type::vec4_type, "ambient" },

-   { glsl_type::vec4_type, "diffuse" },

-   { glsl_type::vec4_type, "specular" },

-   { glsl_type::float_type, "shininess" },

-};

-

-static const struct glsl_struct_field gl_LightSourceParameters_fields[] = {

-   { glsl_type::vec4_type, "ambient" },

-   { glsl_type::vec4_type, "diffuse" },

-   { glsl_type::vec4_type, "specular" },

-   { glsl_type::vec4_type, "position" },

-   { glsl_type::vec4_type, "halfVector" },

-   { glsl_type::vec3_type, "spotDirection" },

-   { glsl_type::float_type, "spotExponent" },

-   { glsl_type::float_type, "spotCutoff" },

-   { glsl_type::float_type, "spotCosCutoff" },

-   { glsl_type::float_type, "constantAttenuation" },

-   { glsl_type::float_type, "linearAttenuation" },

-   { glsl_type::float_type, "quadraticAttenuation" },

-};

-

-static const struct glsl_struct_field gl_LightModelParameters_fields[] = {

-   { glsl_type::vec4_type, "ambient" },

-};

-

-static const struct glsl_struct_field gl_LightModelProducts_fields[] = {

-   { glsl_type::vec4_type, "sceneColor" },

-};

-

-static const struct glsl_struct_field gl_LightProducts_fields[] = {

-   { glsl_type::vec4_type, "ambient" },

-   { glsl_type::vec4_type, "diffuse" },

-   { glsl_type::vec4_type, "specular" },

-};

-

-static const struct glsl_struct_field gl_FogParameters_fields[] = {

-   { glsl_type::vec4_type, "color" },

-   { glsl_type::float_type, "density" },

-   { glsl_type::float_type, "start" },

-   { glsl_type::float_type, "end" },

-   { glsl_type::float_type, "scale" },

-};

-

-const glsl_type glsl_type::builtin_110_deprecated_structure_types[] = {

-   glsl_type(gl_PointParameters_fields,

-             Elements(gl_PointParameters_fields),

-             "gl_PointParameters"),

-   glsl_type(gl_MaterialParameters_fields,

-             Elements(gl_MaterialParameters_fields),

-             "gl_MaterialParameters"),

-   glsl_type(gl_LightSourceParameters_fields,

-             Elements(gl_LightSourceParameters_fields),

-             "gl_LightSourceParameters"),

-   glsl_type(gl_LightModelParameters_fields,

-             Elements(gl_LightModelParameters_fields),

-             "gl_LightModelParameters"),

-   glsl_type(gl_LightModelProducts_fields,

-             Elements(gl_LightModelProducts_fields),

-             "gl_LightModelProducts"),

-   glsl_type(gl_LightProducts_fields,

-             Elements(gl_LightProducts_fields),

-             "gl_LightProducts"),

-   glsl_type(gl_FogParameters_fields,

-             Elements(gl_FogParameters_fields),

-             "gl_FogParameters"),

-};

-/*@}*/

-

-/** \name Types in GLSL 1.10 (but not GLSL ES 1.00)

- */

-/*@{*/

-const glsl_type glsl_type::builtin_110_types[] = {

-   glsl_type(GL_SAMPLER_1D,   GLSL_SAMPLER_DIM_1D, 0, 0, GLSL_TYPE_FLOAT,

-	     "sampler1D"),

-   glsl_type(GL_SAMPLER_1D_SHADOW, GLSL_SAMPLER_DIM_1D, 1, 0, GLSL_TYPE_FLOAT,

-	     "sampler1DShadow"),

-   glsl_type(GL_SAMPLER_2D_SHADOW, GLSL_SAMPLER_DIM_2D, 1, 0, GLSL_TYPE_FLOAT,

-	     "sampler2DShadow"),

-   glsl_type(GL_SAMPLER_3D,   GLSL_SAMPLER_DIM_3D, 0, 0, GLSL_TYPE_FLOAT,

-	     "sampler3D"),

-};

-/*@}*/

-

-/** \name Types added in GLSL 1.20

- */

-/*@{*/

-

-const glsl_type glsl_type::builtin_120_types[] = {

-   glsl_type(GL_FLOAT_MAT2x3, GLSL_TYPE_FLOAT, 3, 2, "mat2x3"),

-   glsl_type(GL_FLOAT_MAT2x4, GLSL_TYPE_FLOAT, 4, 2, "mat2x4"),

-   glsl_type(GL_FLOAT_MAT3x2, GLSL_TYPE_FLOAT, 2, 3, "mat3x2"),

-   glsl_type(GL_FLOAT_MAT3x4, GLSL_TYPE_FLOAT, 4, 3, "mat3x4"),

-   glsl_type(GL_FLOAT_MAT4x2, GLSL_TYPE_FLOAT, 2, 4, "mat4x2"),

-   glsl_type(GL_FLOAT_MAT4x3, GLSL_TYPE_FLOAT, 3, 4, "mat4x3"),

-};

-const glsl_type *const glsl_type::mat2x3_type = & builtin_120_types[0];

-const glsl_type *const glsl_type::mat2x4_type = & builtin_120_types[1];

-const glsl_type *const glsl_type::mat3x2_type = & builtin_120_types[2];

-const glsl_type *const glsl_type::mat3x4_type = & builtin_120_types[3];

-const glsl_type *const glsl_type::mat4x2_type = & builtin_120_types[4];

-const glsl_type *const glsl_type::mat4x3_type = & builtin_120_types[5];

-/*@}*/

-

-/** \name Types added in GLSL 1.30

- */

-/*@{*/

-

-const glsl_type glsl_type::builtin_130_types[] = {

-   glsl_type(GL_UNSIGNED_INT,      GLSL_TYPE_UINT, 1, 1, "uint"),

-   glsl_type(GL_UNSIGNED_INT_VEC2, GLSL_TYPE_UINT, 2, 1, "uvec2"),

-   glsl_type(GL_UNSIGNED_INT_VEC3, GLSL_TYPE_UINT, 3, 1, "uvec3"),

-   glsl_type(GL_UNSIGNED_INT_VEC4, GLSL_TYPE_UINT, 4, 1, "uvec4"),

-

-   /* 1D and 2D texture arrays - several of these are included only in

-    * builtin_EXT_texture_array_types.

-    */

-   glsl_type(GL_INT_SAMPLER_1D_ARRAY,

-	     GLSL_SAMPLER_DIM_1D, 0, 1,   GLSL_TYPE_INT, "isampler1DArray"),

-   glsl_type(GL_UNSIGNED_INT_SAMPLER_1D_ARRAY,

-	     GLSL_SAMPLER_DIM_1D, 0, 1,  GLSL_TYPE_UINT, "usampler1DArray"),

-   glsl_type(GL_INT_SAMPLER_2D_ARRAY,

-	     GLSL_SAMPLER_DIM_2D, 0, 1,   GLSL_TYPE_INT, "isampler2DArray"),

-   glsl_type(GL_UNSIGNED_INT_SAMPLER_2D_ARRAY,

-	     GLSL_SAMPLER_DIM_2D, 0, 1,  GLSL_TYPE_UINT, "usampler2DArray"),

-

-   /* cube shadow samplers */

-   glsl_type(GL_SAMPLER_CUBE_SHADOW,

-	     GLSL_SAMPLER_DIM_CUBE, 1, 0, GLSL_TYPE_FLOAT, "samplerCubeShadow"),

-

-   /* signed and unsigned integer samplers */

-   glsl_type(GL_INT_SAMPLER_1D,

-	     GLSL_SAMPLER_DIM_1D, 0, 0,   GLSL_TYPE_INT, "isampler1D"),

-   glsl_type(GL_UNSIGNED_INT_SAMPLER_1D,

-	     GLSL_SAMPLER_DIM_1D, 0, 0,  GLSL_TYPE_UINT, "usampler1D"),

-   glsl_type(GL_INT_SAMPLER_2D,

-	     GLSL_SAMPLER_DIM_2D, 0, 0,   GLSL_TYPE_INT, "isampler2D"),

-   glsl_type(GL_UNSIGNED_INT_SAMPLER_2D,

-	     GLSL_SAMPLER_DIM_2D, 0, 0,  GLSL_TYPE_UINT, "usampler2D"),

-   glsl_type(GL_INT_SAMPLER_3D,

-	     GLSL_SAMPLER_DIM_3D, 0, 0,   GLSL_TYPE_INT, "isampler3D"),

-   glsl_type(GL_UNSIGNED_INT_SAMPLER_3D,

-	     GLSL_SAMPLER_DIM_3D, 0, 0,  GLSL_TYPE_UINT, "usampler3D"),

-   glsl_type(GL_INT_SAMPLER_CUBE,

-	     GLSL_SAMPLER_DIM_CUBE, 0, 0,   GLSL_TYPE_INT, "isamplerCube"),

-   glsl_type(GL_INT_SAMPLER_CUBE,

-	     GLSL_SAMPLER_DIM_CUBE, 0, 0,  GLSL_TYPE_UINT, "usamplerCube"),

-};

-

-const glsl_type *const glsl_type::uint_type = & builtin_130_types[0];

-const glsl_type *const glsl_type::uvec2_type = & builtin_130_types[1];

-const glsl_type *const glsl_type::uvec3_type = & builtin_130_types[2];

-const glsl_type *const glsl_type::uvec4_type = & builtin_130_types[3];

-/*@}*/

-

-/** \name Sampler types added by GL_ARB_texture_rectangle

- */

-/*@{*/

-

-const glsl_type glsl_type::builtin_ARB_texture_rectangle_types[] = {

-   glsl_type(GL_SAMPLER_2D_RECT,

-	     GLSL_SAMPLER_DIM_RECT, 0, 0, GLSL_TYPE_FLOAT, "sampler2DRect"),

-   glsl_type(GL_SAMPLER_2D_RECT_SHADOW,

-	     GLSL_SAMPLER_DIM_RECT, 1, 0, GLSL_TYPE_FLOAT, "sampler2DRectShadow"),

-};

-/*@}*/

-

-/** \name Sampler types added by GL_EXT_texture_array

- */

-/*@{*/

-

-const glsl_type glsl_type::builtin_EXT_texture_array_types[] = {

-   glsl_type(GL_SAMPLER_1D_ARRAY,

-	     GLSL_SAMPLER_DIM_1D, 0, 1, GLSL_TYPE_FLOAT, "sampler1DArray"),

-   glsl_type(GL_SAMPLER_2D_ARRAY,

-	     GLSL_SAMPLER_DIM_2D, 0, 1, GLSL_TYPE_FLOAT, "sampler2DArray"),

-   glsl_type(GL_SAMPLER_1D_ARRAY_SHADOW,

-	     GLSL_SAMPLER_DIM_1D, 1, 1, GLSL_TYPE_FLOAT, "sampler1DArrayShadow"),

-   glsl_type(GL_SAMPLER_2D_ARRAY_SHADOW,

-	     GLSL_SAMPLER_DIM_2D, 1, 1, GLSL_TYPE_FLOAT, "sampler2DArrayShadow"),

-};

-/*@}*/

-

-/** \name Sampler types added by GL_EXT_texture_buffer_object

- */

-/*@{*/

-

-const glsl_type glsl_type::builtin_EXT_texture_buffer_object_types[] = {

-   glsl_type(GL_SAMPLER_BUFFER,

-	     GLSL_SAMPLER_DIM_BUF, 0, 0, GLSL_TYPE_FLOAT, "samplerBuffer"),

-   glsl_type(GL_INT_SAMPLER_BUFFER,

-	     GLSL_SAMPLER_DIM_BUF, 0, 0,   GLSL_TYPE_INT, "isamplerBuffer"),

-   glsl_type(GL_UNSIGNED_INT_SAMPLER_BUFFER,

-	     GLSL_SAMPLER_DIM_BUF, 0, 0,  GLSL_TYPE_UINT, "usamplerBuffer"),

-};

-/*@}*/

+/*
+ * Copyright © 2009 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+const glsl_type glsl_type::_error_type =
+   glsl_type(GL_INVALID_ENUM, GLSL_TYPE_ERROR, 0, 0, "");
+
+const glsl_type glsl_type::_void_type =
+   glsl_type(GL_INVALID_ENUM, GLSL_TYPE_VOID, 0, 0, "void");
+
+const glsl_type glsl_type::_sampler3D_type =
+   glsl_type(GL_SAMPLER_3D, GLSL_SAMPLER_DIM_3D, 0, 0, GLSL_TYPE_FLOAT,
+	     "sampler3D");
+
+const glsl_type *const glsl_type::error_type = & glsl_type::_error_type;
+const glsl_type *const glsl_type::void_type = & glsl_type::_void_type;
+
+/** \name Core built-in types
+ *
+ * These types exist in all versions of GLSL.
+ */
+/*@{*/
+
+const glsl_type glsl_type::builtin_core_types[] = {
+   glsl_type(GL_BOOL,         GLSL_TYPE_BOOL, 1, 1, "bool"),
+   glsl_type(GL_BOOL_VEC2,    GLSL_TYPE_BOOL, 2, 1, "bvec2"),
+   glsl_type(GL_BOOL_VEC3,    GLSL_TYPE_BOOL, 3, 1, "bvec3"),
+   glsl_type(GL_BOOL_VEC4,    GLSL_TYPE_BOOL, 4, 1, "bvec4"),
+   glsl_type(GL_INT,          GLSL_TYPE_INT, 1, 1, "int"),
+   glsl_type(GL_INT_VEC2,     GLSL_TYPE_INT, 2, 1, "ivec2"),
+   glsl_type(GL_INT_VEC3,     GLSL_TYPE_INT, 3, 1, "ivec3"),
+   glsl_type(GL_INT_VEC4,     GLSL_TYPE_INT, 4, 1, "ivec4"),
+   glsl_type(GL_FLOAT,        GLSL_TYPE_FLOAT, 1, 1, "float"),
+   glsl_type(GL_FLOAT_VEC2,   GLSL_TYPE_FLOAT, 2, 1, "vec2"),
+   glsl_type(GL_FLOAT_VEC3,   GLSL_TYPE_FLOAT, 3, 1, "vec3"),
+   glsl_type(GL_FLOAT_VEC4,   GLSL_TYPE_FLOAT, 4, 1, "vec4"),
+   glsl_type(GL_FLOAT_MAT2,   GLSL_TYPE_FLOAT, 2, 2, "mat2"),
+   glsl_type(GL_FLOAT_MAT3,   GLSL_TYPE_FLOAT, 3, 3, "mat3"),
+   glsl_type(GL_FLOAT_MAT4,   GLSL_TYPE_FLOAT, 4, 4, "mat4"),
+   glsl_type(GL_SAMPLER_2D,   GLSL_SAMPLER_DIM_2D, 0, 0, GLSL_TYPE_FLOAT,
+	     "sampler2D"),
+   glsl_type(GL_SAMPLER_CUBE, GLSL_SAMPLER_DIM_CUBE, 0, 0, GLSL_TYPE_FLOAT,
+	     "samplerCube"),
+};
+
+const glsl_type *const glsl_type::bool_type  = & builtin_core_types[0];
+const glsl_type *const glsl_type::int_type   = & builtin_core_types[4];
+const glsl_type *const glsl_type::ivec4_type = & builtin_core_types[7];
+const glsl_type *const glsl_type::float_type = & builtin_core_types[8];
+const glsl_type *const glsl_type::vec2_type = & builtin_core_types[9];
+const glsl_type *const glsl_type::vec3_type = & builtin_core_types[10];
+const glsl_type *const glsl_type::vec4_type = & builtin_core_types[11];
+const glsl_type *const glsl_type::mat2_type = & builtin_core_types[12];
+const glsl_type *const glsl_type::mat3_type = & builtin_core_types[13];
+const glsl_type *const glsl_type::mat4_type = & builtin_core_types[14];
+/*@}*/
+
+/** \name GLSL structures that have not been deprecated.
+ */
+/*@{*/
+
+static const struct glsl_struct_field gl_DepthRangeParameters_fields[] = {
+   { glsl_type::float_type, "near" },
+   { glsl_type::float_type, "far" },
+   { glsl_type::float_type, "diff" },
+};
+
+const glsl_type glsl_type::builtin_structure_types[] = {
+   glsl_type(gl_DepthRangeParameters_fields,
+             Elements(gl_DepthRangeParameters_fields),
+             "gl_DepthRangeParameters"),
+};
+/*@}*/
+
+/** \name GLSL 1.00 / 1.10 structures that are deprecated in GLSL 1.30
+ */
+/*@{*/
+
+static const struct glsl_struct_field gl_PointParameters_fields[] = {
+   { glsl_type::float_type, "size" },
+   { glsl_type::float_type, "sizeMin" },
+   { glsl_type::float_type, "sizeMax" },
+   { glsl_type::float_type, "fadeThresholdSize" },
+   { glsl_type::float_type, "distanceConstantAttenuation" },
+   { glsl_type::float_type, "distanceLinearAttenuation" },
+   { glsl_type::float_type, "distanceQuadraticAttenuation" },
+};
+
+static const struct glsl_struct_field gl_MaterialParameters_fields[] = {
+   { glsl_type::vec4_type, "emission" },
+   { glsl_type::vec4_type, "ambient" },
+   { glsl_type::vec4_type, "diffuse" },
+   { glsl_type::vec4_type, "specular" },
+   { glsl_type::float_type, "shininess" },
+};
+
+static const struct glsl_struct_field gl_LightSourceParameters_fields[] = {
+   { glsl_type::vec4_type, "ambient" },
+   { glsl_type::vec4_type, "diffuse" },
+   { glsl_type::vec4_type, "specular" },
+   { glsl_type::vec4_type, "position" },
+   { glsl_type::vec4_type, "halfVector" },
+   { glsl_type::vec3_type, "spotDirection" },
+   { glsl_type::float_type, "spotExponent" },
+   { glsl_type::float_type, "spotCutoff" },
+   { glsl_type::float_type, "spotCosCutoff" },
+   { glsl_type::float_type, "constantAttenuation" },
+   { glsl_type::float_type, "linearAttenuation" },
+   { glsl_type::float_type, "quadraticAttenuation" },
+};
+
+static const struct glsl_struct_field gl_LightModelParameters_fields[] = {
+   { glsl_type::vec4_type, "ambient" },
+};
+
+static const struct glsl_struct_field gl_LightModelProducts_fields[] = {
+   { glsl_type::vec4_type, "sceneColor" },
+};
+
+static const struct glsl_struct_field gl_LightProducts_fields[] = {
+   { glsl_type::vec4_type, "ambient" },
+   { glsl_type::vec4_type, "diffuse" },
+   { glsl_type::vec4_type, "specular" },
+};
+
+static const struct glsl_struct_field gl_FogParameters_fields[] = {
+   { glsl_type::vec4_type, "color" },
+   { glsl_type::float_type, "density" },
+   { glsl_type::float_type, "start" },
+   { glsl_type::float_type, "end" },
+   { glsl_type::float_type, "scale" },
+};
+
+const glsl_type glsl_type::builtin_110_deprecated_structure_types[] = {
+   glsl_type(gl_PointParameters_fields,
+             Elements(gl_PointParameters_fields),
+             "gl_PointParameters"),
+   glsl_type(gl_MaterialParameters_fields,
+             Elements(gl_MaterialParameters_fields),
+             "gl_MaterialParameters"),
+   glsl_type(gl_LightSourceParameters_fields,
+             Elements(gl_LightSourceParameters_fields),
+             "gl_LightSourceParameters"),
+   glsl_type(gl_LightModelParameters_fields,
+             Elements(gl_LightModelParameters_fields),
+             "gl_LightModelParameters"),
+   glsl_type(gl_LightModelProducts_fields,
+             Elements(gl_LightModelProducts_fields),
+             "gl_LightModelProducts"),
+   glsl_type(gl_LightProducts_fields,
+             Elements(gl_LightProducts_fields),
+             "gl_LightProducts"),
+   glsl_type(gl_FogParameters_fields,
+             Elements(gl_FogParameters_fields),
+             "gl_FogParameters"),
+};
+/*@}*/
+
+/** \name Types in GLSL 1.10 (but not GLSL ES 1.00)
+ */
+/*@{*/
+const glsl_type glsl_type::builtin_110_types[] = {
+   glsl_type(GL_SAMPLER_1D,   GLSL_SAMPLER_DIM_1D, 0, 0, GLSL_TYPE_FLOAT,
+	     "sampler1D"),
+   glsl_type(GL_SAMPLER_1D_SHADOW, GLSL_SAMPLER_DIM_1D, 1, 0, GLSL_TYPE_FLOAT,
+	     "sampler1DShadow"),
+   glsl_type(GL_SAMPLER_2D_SHADOW, GLSL_SAMPLER_DIM_2D, 1, 0, GLSL_TYPE_FLOAT,
+	     "sampler2DShadow"),
+};
+/*@}*/
+
+/** \name Types added in GLSL 1.20
+ */
+/*@{*/
+
+const glsl_type glsl_type::builtin_120_types[] = {
+   glsl_type(GL_FLOAT_MAT2x3, GLSL_TYPE_FLOAT, 3, 2, "mat2x3"),
+   glsl_type(GL_FLOAT_MAT2x4, GLSL_TYPE_FLOAT, 4, 2, "mat2x4"),
+   glsl_type(GL_FLOAT_MAT3x2, GLSL_TYPE_FLOAT, 2, 3, "mat3x2"),
+   glsl_type(GL_FLOAT_MAT3x4, GLSL_TYPE_FLOAT, 4, 3, "mat3x4"),
+   glsl_type(GL_FLOAT_MAT4x2, GLSL_TYPE_FLOAT, 2, 4, "mat4x2"),
+   glsl_type(GL_FLOAT_MAT4x3, GLSL_TYPE_FLOAT, 3, 4, "mat4x3"),
+};
+const glsl_type *const glsl_type::mat2x3_type = & builtin_120_types[0];
+const glsl_type *const glsl_type::mat2x4_type = & builtin_120_types[1];
+const glsl_type *const glsl_type::mat3x2_type = & builtin_120_types[2];
+const glsl_type *const glsl_type::mat3x4_type = & builtin_120_types[3];
+const glsl_type *const glsl_type::mat4x2_type = & builtin_120_types[4];
+const glsl_type *const glsl_type::mat4x3_type = & builtin_120_types[5];
+/*@}*/
+
+/** \name Types added in GLSL 1.30
+ */
+/*@{*/
+
+const glsl_type glsl_type::builtin_130_types[] = {
+   glsl_type(GL_UNSIGNED_INT,      GLSL_TYPE_UINT, 1, 1, "uint"),
+   glsl_type(GL_UNSIGNED_INT_VEC2, GLSL_TYPE_UINT, 2, 1, "uvec2"),
+   glsl_type(GL_UNSIGNED_INT_VEC3, GLSL_TYPE_UINT, 3, 1, "uvec3"),
+   glsl_type(GL_UNSIGNED_INT_VEC4, GLSL_TYPE_UINT, 4, 1, "uvec4"),
+
+   /* 1D and 2D texture arrays - several of these are included only in
+    * builtin_EXT_texture_array_types.
+    */
+   glsl_type(GL_INT_SAMPLER_1D_ARRAY,
+	     GLSL_SAMPLER_DIM_1D, 0, 1,   GLSL_TYPE_INT, "isampler1DArray"),
+   glsl_type(GL_UNSIGNED_INT_SAMPLER_1D_ARRAY,
+	     GLSL_SAMPLER_DIM_1D, 0, 1,  GLSL_TYPE_UINT, "usampler1DArray"),
+   glsl_type(GL_INT_SAMPLER_2D_ARRAY,
+	     GLSL_SAMPLER_DIM_2D, 0, 1,   GLSL_TYPE_INT, "isampler2DArray"),
+   glsl_type(GL_UNSIGNED_INT_SAMPLER_2D_ARRAY,
+	     GLSL_SAMPLER_DIM_2D, 0, 1,  GLSL_TYPE_UINT, "usampler2DArray"),
+
+   /* cube shadow samplers */
+   glsl_type(GL_SAMPLER_CUBE_SHADOW,
+	     GLSL_SAMPLER_DIM_CUBE, 1, 0, GLSL_TYPE_FLOAT, "samplerCubeShadow"),
+
+   /* signed and unsigned integer samplers */
+   glsl_type(GL_INT_SAMPLER_1D,
+	     GLSL_SAMPLER_DIM_1D, 0, 0,   GLSL_TYPE_INT, "isampler1D"),
+   glsl_type(GL_UNSIGNED_INT_SAMPLER_1D,
+	     GLSL_SAMPLER_DIM_1D, 0, 0,  GLSL_TYPE_UINT, "usampler1D"),
+   glsl_type(GL_INT_SAMPLER_2D,
+	     GLSL_SAMPLER_DIM_2D, 0, 0,   GLSL_TYPE_INT, "isampler2D"),
+   glsl_type(GL_UNSIGNED_INT_SAMPLER_2D,
+	     GLSL_SAMPLER_DIM_2D, 0, 0,  GLSL_TYPE_UINT, "usampler2D"),
+   glsl_type(GL_INT_SAMPLER_3D,
+	     GLSL_SAMPLER_DIM_3D, 0, 0,   GLSL_TYPE_INT, "isampler3D"),
+   glsl_type(GL_UNSIGNED_INT_SAMPLER_3D,
+	     GLSL_SAMPLER_DIM_3D, 0, 0,  GLSL_TYPE_UINT, "usampler3D"),
+   glsl_type(GL_INT_SAMPLER_CUBE,
+	     GLSL_SAMPLER_DIM_CUBE, 0, 0,   GLSL_TYPE_INT, "isamplerCube"),
+   glsl_type(GL_INT_SAMPLER_CUBE,
+	     GLSL_SAMPLER_DIM_CUBE, 0, 0,  GLSL_TYPE_UINT, "usamplerCube"),
+};
+
+const glsl_type *const glsl_type::uint_type = & builtin_130_types[0];
+const glsl_type *const glsl_type::uvec2_type = & builtin_130_types[1];
+const glsl_type *const glsl_type::uvec3_type = & builtin_130_types[2];
+const glsl_type *const glsl_type::uvec4_type = & builtin_130_types[3];
+/*@}*/
+
+/** \name Sampler types added by GL_ARB_texture_rectangle
+ */
+/*@{*/
+
+const glsl_type glsl_type::builtin_ARB_texture_rectangle_types[] = {
+   glsl_type(GL_SAMPLER_2D_RECT,
+	     GLSL_SAMPLER_DIM_RECT, 0, 0, GLSL_TYPE_FLOAT, "sampler2DRect"),
+   glsl_type(GL_SAMPLER_2D_RECT_SHADOW,
+	     GLSL_SAMPLER_DIM_RECT, 1, 0, GLSL_TYPE_FLOAT, "sampler2DRectShadow"),
+};
+/*@}*/
+
+/** \name Sampler types added by GL_EXT_texture_array
+ */
+/*@{*/
+
+const glsl_type glsl_type::builtin_EXT_texture_array_types[] = {
+   glsl_type(GL_SAMPLER_1D_ARRAY,
+	     GLSL_SAMPLER_DIM_1D, 0, 1, GLSL_TYPE_FLOAT, "sampler1DArray"),
+   glsl_type(GL_SAMPLER_2D_ARRAY,
+	     GLSL_SAMPLER_DIM_2D, 0, 1, GLSL_TYPE_FLOAT, "sampler2DArray"),
+   glsl_type(GL_SAMPLER_1D_ARRAY_SHADOW,
+	     GLSL_SAMPLER_DIM_1D, 1, 1, GLSL_TYPE_FLOAT, "sampler1DArrayShadow"),
+   glsl_type(GL_SAMPLER_2D_ARRAY_SHADOW,
+	     GLSL_SAMPLER_DIM_2D, 1, 1, GLSL_TYPE_FLOAT, "sampler2DArrayShadow"),
+};
+/*@}*/
+
+/** \name Sampler types added by GL_EXT_texture_buffer_object
+ */
+/*@{*/
+
+const glsl_type glsl_type::builtin_EXT_texture_buffer_object_types[] = {
+   glsl_type(GL_SAMPLER_BUFFER,
+	     GLSL_SAMPLER_DIM_BUF, 0, 0, GLSL_TYPE_FLOAT, "samplerBuffer"),
+   glsl_type(GL_INT_SAMPLER_BUFFER,
+	     GLSL_SAMPLER_DIM_BUF, 0, 0,   GLSL_TYPE_INT, "isamplerBuffer"),
+   glsl_type(GL_UNSIGNED_INT_SAMPLER_BUFFER,
+	     GLSL_SAMPLER_DIM_BUF, 0, 0,  GLSL_TYPE_UINT, "usamplerBuffer"),
+};
+/*@}*/
diff --git a/mesalib/src/glsl/glsl_parser_extras.cpp b/mesalib/src/glsl/glsl_parser_extras.cpp
index d7a37aef4..e8c60936f 100644
--- a/mesalib/src/glsl/glsl_parser_extras.cpp
+++ b/mesalib/src/glsl/glsl_parser_extras.cpp
@@ -256,6 +256,11 @@ _mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
       state->AMD_conservative_depth_enable = (ext_mode != extension_disable);
       state->AMD_conservative_depth_warn = (ext_mode == extension_warn);
       unsupported = !state->extensions->AMD_conservative_depth;
+   } else if (strcmp(name, "GL_OES_texture_3D") == 0 && state->es_shader) {
+      state->OES_texture_3D_enable = (ext_mode != extension_disable);
+      state->OES_texture_3D_warn = (ext_mode == extension_warn);
+
+      unsupported = !state->extensions->EXT_texture3D;
    } else {
       unsupported = true;
    }
diff --git a/mesalib/src/glsl/glsl_parser_extras.h b/mesalib/src/glsl/glsl_parser_extras.h
index 10cb673c6..b5c016fb3 100644
--- a/mesalib/src/glsl/glsl_parser_extras.h
+++ b/mesalib/src/glsl/glsl_parser_extras.h
@@ -172,6 +172,8 @@ struct _mesa_glsl_parse_state {
    unsigned ARB_shader_stencil_export_warn:1;
    unsigned AMD_conservative_depth_enable:1;
    unsigned AMD_conservative_depth_warn:1;
+   unsigned OES_texture_3D_enable:1;
+   unsigned OES_texture_3D_warn:1;
    /*@}*/
 
    /** Extensions supported by the OpenGL implementation. */
diff --git a/mesalib/src/glsl/glsl_types.cpp b/mesalib/src/glsl/glsl_types.cpp
index 76b4f3e4c..78d10bd93 100644
--- a/mesalib/src/glsl/glsl_types.cpp
+++ b/mesalib/src/glsl/glsl_types.cpp
@@ -131,6 +131,7 @@ glsl_type::generate_110_types(glsl_symbol_table *symtab)
    add_types_to_symbol_table(symtab, builtin_110_types,
 			     Elements(builtin_110_types),
 			     false);
+   add_types_to_symbol_table(symtab, &_sampler3D_type, 1, false);
    add_types_to_symbol_table(symtab, builtin_110_deprecated_structure_types,
 			     Elements(builtin_110_deprecated_structure_types),
 			     false);
@@ -179,6 +180,13 @@ glsl_type::generate_EXT_texture_array_types(glsl_symbol_table *symtab,
 
 
 void
+glsl_type::generate_OES_texture_3D_types(glsl_symbol_table *symtab, bool warn)
+{
+   add_types_to_symbol_table(symtab, &_sampler3D_type, 1, warn);
+}
+
+
+void
 _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state)
 {
    switch (state->language_version) {
@@ -204,6 +212,10 @@ _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state)
       glsl_type::generate_ARB_texture_rectangle_types(state->symbols,
 					   state->ARB_texture_rectangle_warn);
    }
+   if (state->OES_texture_3D_enable && state->language_version == 100) {
+      glsl_type::generate_OES_texture_3D_types(state->symbols,
+					       state->OES_texture_3D_warn);
+   }
 
    if (state->EXT_texture_array_enable && state->language_version < 130) {
       // These are already included in 130; don't create twice.
diff --git a/mesalib/src/glsl/glsl_types.h b/mesalib/src/glsl/glsl_types.h
index 61bf5e0cf..3c2672c01 100644
--- a/mesalib/src/glsl/glsl_types.h
+++ b/mesalib/src/glsl/glsl_types.h
@@ -427,6 +427,7 @@ private:
    /*@{*/
    static const glsl_type _error_type;
    static const glsl_type _void_type;
+   static const glsl_type _sampler3D_type;
    static const glsl_type builtin_core_types[];
    static const glsl_type builtin_structure_types[];
    static const glsl_type builtin_110_deprecated_structure_types[];
@@ -453,6 +454,7 @@ private:
    static void generate_130_types(glsl_symbol_table *);
    static void generate_ARB_texture_rectangle_types(glsl_symbol_table *, bool);
    static void generate_EXT_texture_array_types(glsl_symbol_table *, bool);
+   static void generate_OES_texture_3D_types(glsl_symbol_table *, bool);
    /*@}*/
 
    /**
diff --git a/mesalib/src/mesa/SConscript b/mesalib/src/mesa/SConscript
index ea04fb1a0..d65750b93 100644
--- a/mesalib/src/mesa/SConscript
+++ b/mesalib/src/mesa/SConscript
@@ -87,6 +87,7 @@ main_sources = [
     'main/multisample.c',
     'main/nvprogram.c',
     'main/pack.c',
+    'main/pbo.c',
     'main/pixel.c',
     'main/pixelstore.c',
     'main/pixeltransfer.c',
@@ -106,6 +107,7 @@ main_sources = [
     'main/stencil.c',
     'main/syncobj.c',
     'main/texcompress.c',
+    'main/texcompress_rgtc.c',
     'main/texcompress_s3tc.c',
     'main/texcompress_fxt1.c',
     'main/texenv.c',
diff --git a/mesalib/src/mesa/drivers/common/meta.c b/mesalib/src/mesa/drivers/common/meta.c
index 9c0507bc2..2b00e8979 100644
--- a/mesalib/src/mesa/drivers/common/meta.c
+++ b/mesalib/src/mesa/drivers/common/meta.c
@@ -1,2851 +1,2852 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.6

- *

- * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/**

- * Meta operations.  Some GL operations can be expressed in terms of

- * other GL operations.  For example, glBlitFramebuffer() can be done

- * with texture mapping and glClear() can be done with polygon rendering.

- *

- * \author Brian Paul

- */

-

-

-#include "main/glheader.h"

-#include "main/mtypes.h"

-#include "main/imports.h"

-#include "main/arbprogram.h"

-#include "main/arrayobj.h"

-#include "main/blend.h"

-#include "main/bufferobj.h"

-#include "main/buffers.h"

-#include "main/colortab.h"

-#include "main/depth.h"

-#include "main/enable.h"

-#include "main/fbobject.h"

-#include "main/formats.h"

-#include "main/image.h"

-#include "main/macros.h"

-#include "main/matrix.h"

-#include "main/mipmap.h"

-#include "main/polygon.h"

-#include "main/readpix.h"

-#include "main/scissor.h"

-#include "main/shaderapi.h"

-#include "main/shaderobj.h"

-#include "main/state.h"

-#include "main/stencil.h"

-#include "main/texobj.h"

-#include "main/texenv.h"

-#include "main/teximage.h"

-#include "main/texparam.h"

-#include "main/texstate.h"

-#include "main/varray.h"

-#include "main/viewport.h"

-#include "program/program.h"

-#include "swrast/swrast.h"

-#include "drivers/common/meta.h"

-

-

-/** Return offset in bytes of the field within a vertex struct */

-#define OFFSET(FIELD) ((void *) offsetof(struct vertex, FIELD))

-

-

-/**

- * Flags passed to _mesa_meta_begin().

- */

-/*@{*/

-#define META_ALL              ~0x0

-#define META_ALPHA_TEST        0x1

-#define META_BLEND             0x2  /**< includes logicop */

-#define META_COLOR_MASK        0x4

-#define META_DEPTH_TEST        0x8

-#define META_FOG              0x10

-#define META_PIXEL_STORE      0x20

-#define META_PIXEL_TRANSFER   0x40

-#define META_RASTERIZATION    0x80

-#define META_SCISSOR         0x100

-#define META_SHADER          0x200

-#define META_STENCIL_TEST    0x400

-#define META_TRANSFORM       0x800 /**< modelview, projection, clip planes */

-#define META_TEXTURE        0x1000

-#define META_VERTEX         0x2000

-#define META_VIEWPORT       0x4000

-/*@}*/

-

-

-/**

- * State which we may save/restore across meta ops.

- * XXX this may be incomplete...

- */

-struct save_state

-{

-   GLbitfield SavedState;  /**< bitmask of META_* flags */

-

-   /** META_ALPHA_TEST */

-   GLboolean AlphaEnabled;

-   GLenum AlphaFunc;

-   GLclampf AlphaRef;

-

-   /** META_BLEND */

-   GLbitfield BlendEnabled;

-   GLboolean ColorLogicOpEnabled;

-

-   /** META_COLOR_MASK */

-   GLubyte ColorMask[MAX_DRAW_BUFFERS][4];

-

-   /** META_DEPTH_TEST */

-   struct gl_depthbuffer_attrib Depth;

-

-   /** META_FOG */

-   GLboolean Fog;

-

-   /** META_PIXEL_STORE */

-   struct gl_pixelstore_attrib Pack, Unpack;

-

-   /** META_PIXEL_TRANSFER */

-   GLfloat RedBias, RedScale;

-   GLfloat GreenBias, GreenScale;

-   GLfloat BlueBias, BlueScale;

-   GLfloat AlphaBias, AlphaScale;

-   GLfloat DepthBias, DepthScale;

-   GLboolean MapColorFlag;

-

-   /** META_RASTERIZATION */

-   GLenum FrontPolygonMode, BackPolygonMode;

-   GLboolean PolygonOffset;

-   GLboolean PolygonSmooth;

-   GLboolean PolygonStipple;

-   GLboolean PolygonCull;

-

-   /** META_SCISSOR */

-   struct gl_scissor_attrib Scissor;

-

-   /** META_SHADER */

-   GLboolean VertexProgramEnabled;

-   struct gl_vertex_program *VertexProgram;

-   GLboolean FragmentProgramEnabled;

-   struct gl_fragment_program *FragmentProgram;

-   struct gl_shader_program *VertexShader;

-   struct gl_shader_program *GeometryShader;

-   struct gl_shader_program *FragmentShader;

-   struct gl_shader_program *ActiveShader;

-

-   /** META_STENCIL_TEST */

-   struct gl_stencil_attrib Stencil;

-

-   /** META_TRANSFORM */

-   GLenum MatrixMode;

-   GLfloat ModelviewMatrix[16];

-   GLfloat ProjectionMatrix[16];

-   GLfloat TextureMatrix[16];

-   GLbitfield ClipPlanesEnabled;

-

-   /** META_TEXTURE */

-   GLuint ActiveUnit;

-   GLuint ClientActiveUnit;

-   /** for unit[0] only */

-   struct gl_texture_object *CurrentTexture[NUM_TEXTURE_TARGETS];

-   /** mask of TEXTURE_2D_BIT, etc */

-   GLbitfield TexEnabled[MAX_TEXTURE_UNITS];

-   GLbitfield TexGenEnabled[MAX_TEXTURE_UNITS];

-   GLuint EnvMode;  /* unit[0] only */

-

-   /** META_VERTEX */

-   struct gl_array_object *ArrayObj;

-   struct gl_buffer_object *ArrayBufferObj;

-

-   /** META_VIEWPORT */

-   GLint ViewportX, ViewportY, ViewportW, ViewportH;

-   GLclampd DepthNear, DepthFar;

-

-   /** Miscellaneous (always disabled) */

-   GLboolean Lighting;

-};

-

-

-/**

- * Temporary texture used for glBlitFramebuffer, glDrawPixels, etc.

- * This is currently shared by all the meta ops.  But we could create a

- * separate one for each of glDrawPixel, glBlitFramebuffer, glCopyPixels, etc.

- */

-struct temp_texture

-{

-   GLuint TexObj;

-   GLenum Target;         /**< GL_TEXTURE_2D or GL_TEXTURE_RECTANGLE */

-   GLsizei MinSize;       /**< Min texture size to allocate */

-   GLsizei MaxSize;       /**< Max possible texture size */

-   GLboolean NPOT;        /**< Non-power of two size OK? */

-   GLsizei Width, Height; /**< Current texture size */

-   GLenum IntFormat;

-   GLfloat Sright, Ttop;  /**< right, top texcoords */

-};

-

-

-/**

- * State for glBlitFramebufer()

- */

-struct blit_state

-{

-   GLuint ArrayObj;

-   GLuint VBO;

-   GLuint DepthFP;

-};

-

-

-/**

- * State for glClear()

- */

-struct clear_state

-{

-   GLuint ArrayObj;

-   GLuint VBO;

-};

-

-

-/**

- * State for glCopyPixels()

- */

-struct copypix_state

-{

-   GLuint ArrayObj;

-   GLuint VBO;

-};

-

-

-/**

- * State for glDrawPixels()

- */

-struct drawpix_state

-{

-   GLuint ArrayObj;

-

-   GLuint StencilFP;  /**< Fragment program for drawing stencil images */

-   GLuint DepthFP;  /**< Fragment program for drawing depth images */

-};

-

-

-/**

- * State for glBitmap()

- */

-struct bitmap_state

-{

-   GLuint ArrayObj;

-   GLuint VBO;

-   struct temp_texture Tex;  /**< separate texture from other meta ops */

-};

-

-

-/**

- * State for _mesa_meta_generate_mipmap()

- */

-struct gen_mipmap_state

-{

-   GLuint ArrayObj;

-   GLuint VBO;

-   GLuint FBO;

-};

-

-#define MAX_META_OPS_DEPTH      2

-/**

- * All per-context meta state.

- */

-struct gl_meta_state

-{

-   /** Stack of state saved during meta-ops */

-   struct save_state Save[MAX_META_OPS_DEPTH];

-   /** Save stack depth */

-   GLuint SaveStackDepth;

-

-   struct temp_texture TempTex;

-

-   struct blit_state Blit;    /**< For _mesa_meta_BlitFramebuffer() */

-   struct clear_state Clear;  /**< For _mesa_meta_Clear() */

-   struct copypix_state CopyPix;  /**< For _mesa_meta_CopyPixels() */

-   struct drawpix_state DrawPix;  /**< For _mesa_meta_DrawPixels() */

-   struct bitmap_state Bitmap;    /**< For _mesa_meta_Bitmap() */

-   struct gen_mipmap_state Mipmap;    /**< For _mesa_meta_GenerateMipmap() */

-};

-

-

-/**

- * Initialize meta-ops for a context.

- * To be called once during context creation.

- */

-void

-_mesa_meta_init(struct gl_context *ctx)

-{

-   ASSERT(!ctx->Meta);

-

-   ctx->Meta = CALLOC_STRUCT(gl_meta_state);

-}

-

-

-/**

- * Free context meta-op state.

- * To be called once during context destruction.

- */

-void

-_mesa_meta_free(struct gl_context *ctx)

-{

-   /* Note: Any textures, VBOs, etc, that we allocate should get

-    * freed by the normal context destruction code.  But this would be

-    * the place to free other meta data someday.

-    */

-   free(ctx->Meta);

-   ctx->Meta = NULL;

-}

-

-

-/**

- * Enter meta state.  This is like a light-weight version of glPushAttrib

- * but it also resets most GL state back to default values.

- *

- * \param state  bitmask of META_* flags indicating which attribute groups

- *               to save and reset to their defaults

- */

-static void

-_mesa_meta_begin(struct gl_context *ctx, GLbitfield state)

-{

-   struct save_state *save;

-

-   /* hope MAX_META_OPS_DEPTH is large enough */

-   assert(ctx->Meta->SaveStackDepth < MAX_META_OPS_DEPTH);

-

-   save = &ctx->Meta->Save[ctx->Meta->SaveStackDepth++];

-   memset(save, 0, sizeof(*save));

-   save->SavedState = state;

-

-   if (state & META_ALPHA_TEST) {

-      save->AlphaEnabled = ctx->Color.AlphaEnabled;

-      save->AlphaFunc = ctx->Color.AlphaFunc;

-      save->AlphaRef = ctx->Color.AlphaRef;

-      if (ctx->Color.AlphaEnabled)

-         _mesa_set_enable(ctx, GL_ALPHA_TEST, GL_FALSE);

-   }

-

-   if (state & META_BLEND) {

-      save->BlendEnabled = ctx->Color.BlendEnabled;

-      if (ctx->Color.BlendEnabled) {

-         if (ctx->Extensions.EXT_draw_buffers2) {

-            GLuint i;

-            for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {

-               _mesa_set_enablei(ctx, GL_BLEND, i, GL_FALSE);

-            }

-         }

-         else {

-            _mesa_set_enable(ctx, GL_BLEND, GL_FALSE);

-         }

-      }

-      save->ColorLogicOpEnabled = ctx->Color.ColorLogicOpEnabled;

-      if (ctx->Color.ColorLogicOpEnabled)

-         _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP, GL_FALSE);

-   }

-

-   if (state & META_COLOR_MASK) {

-      memcpy(save->ColorMask, ctx->Color.ColorMask,

-             sizeof(ctx->Color.ColorMask));

-      if (!ctx->Color.ColorMask[0][0] ||

-          !ctx->Color.ColorMask[0][1] ||

-          !ctx->Color.ColorMask[0][2] ||

-          !ctx->Color.ColorMask[0][3])

-         _mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);

-   }

-

-   if (state & META_DEPTH_TEST) {

-      save->Depth = ctx->Depth; /* struct copy */

-      if (ctx->Depth.Test)

-         _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_FALSE);

-   }

-

-   if (state & META_FOG) {

-      save->Fog = ctx->Fog.Enabled;

-      if (ctx->Fog.Enabled)

-         _mesa_set_enable(ctx, GL_FOG, GL_FALSE);

-   }

-

-   if (state & META_PIXEL_STORE) {

-      save->Pack = ctx->Pack;

-      save->Unpack = ctx->Unpack;

-      ctx->Pack = ctx->DefaultPacking;

-      ctx->Unpack = ctx->DefaultPacking;

-   }

-

-   if (state & META_PIXEL_TRANSFER) {

-      save->RedScale = ctx->Pixel.RedScale;

-      save->RedBias = ctx->Pixel.RedBias;

-      save->GreenScale = ctx->Pixel.GreenScale;

-      save->GreenBias = ctx->Pixel.GreenBias;

-      save->BlueScale = ctx->Pixel.BlueScale;

-      save->BlueBias = ctx->Pixel.BlueBias;

-      save->AlphaScale = ctx->Pixel.AlphaScale;

-      save->AlphaBias = ctx->Pixel.AlphaBias;

-      save->MapColorFlag = ctx->Pixel.MapColorFlag;

-      ctx->Pixel.RedScale = 1.0F;

-      ctx->Pixel.RedBias = 0.0F;

-      ctx->Pixel.GreenScale = 1.0F;

-      ctx->Pixel.GreenBias = 0.0F;

-      ctx->Pixel.BlueScale = 1.0F;

-      ctx->Pixel.BlueBias = 0.0F;

-      ctx->Pixel.AlphaScale = 1.0F;

-      ctx->Pixel.AlphaBias = 0.0F;

-      ctx->Pixel.MapColorFlag = GL_FALSE;

-      /* XXX more state */

-      ctx->NewState |=_NEW_PIXEL;

-   }

-

-   if (state & META_RASTERIZATION) {

-      save->FrontPolygonMode = ctx->Polygon.FrontMode;

-      save->BackPolygonMode = ctx->Polygon.BackMode;

-      save->PolygonOffset = ctx->Polygon.OffsetFill;

-      save->PolygonSmooth = ctx->Polygon.SmoothFlag;

-      save->PolygonStipple = ctx->Polygon.StippleFlag;

-      save->PolygonCull = ctx->Polygon.CullFlag;

-      _mesa_PolygonMode(GL_FRONT_AND_BACK, GL_FILL);

-      _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL, GL_FALSE);

-      _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, GL_FALSE);

-      _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, GL_FALSE);

-      _mesa_set_enable(ctx, GL_CULL_FACE, GL_FALSE);

-   }

-

-   if (state & META_SCISSOR) {

-      save->Scissor = ctx->Scissor; /* struct copy */

-      _mesa_set_enable(ctx, GL_SCISSOR_TEST, GL_FALSE);

-   }

-

-   if (state & META_SHADER) {

-      if (ctx->Extensions.ARB_vertex_program) {

-         save->VertexProgramEnabled = ctx->VertexProgram.Enabled;

-         _mesa_reference_vertprog(ctx, &save->VertexProgram,

-				  ctx->VertexProgram.Current);

-         _mesa_set_enable(ctx, GL_VERTEX_PROGRAM_ARB, GL_FALSE);

-      }

-

-      if (ctx->Extensions.ARB_fragment_program) {

-         save->FragmentProgramEnabled = ctx->FragmentProgram.Enabled;

-         _mesa_reference_fragprog(ctx, &save->FragmentProgram,

-				  ctx->FragmentProgram.Current);

-         _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_FALSE);

-      }

-

-      if (ctx->Extensions.ARB_shader_objects) {

-	 _mesa_reference_shader_program(ctx, &save->VertexShader,

-					ctx->Shader.CurrentVertexProgram);

-	 _mesa_reference_shader_program(ctx, &save->GeometryShader,

-					ctx->Shader.CurrentGeometryProgram);

-	 _mesa_reference_shader_program(ctx, &save->FragmentShader,

-					ctx->Shader.CurrentFragmentProgram);

-	 _mesa_reference_shader_program(ctx, &save->ActiveShader,

-					ctx->Shader.CurrentFragmentProgram);

-

-         _mesa_UseProgramObjectARB(0);

-      }

-   }

-

-   if (state & META_STENCIL_TEST) {

-      save->Stencil = ctx->Stencil; /* struct copy */

-      if (ctx->Stencil.Enabled)

-         _mesa_set_enable(ctx, GL_STENCIL_TEST, GL_FALSE);

-      /* NOTE: other stencil state not reset */

-   }

-

-   if (state & META_TEXTURE) {

-      GLuint u, tgt;

-

-      save->ActiveUnit = ctx->Texture.CurrentUnit;

-      save->ClientActiveUnit = ctx->Array.ActiveTexture;

-      save->EnvMode = ctx->Texture.Unit[0].EnvMode;

-

-      /* Disable all texture units */

-      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {

-         save->TexEnabled[u] = ctx->Texture.Unit[u].Enabled;

-         save->TexGenEnabled[u] = ctx->Texture.Unit[u].TexGenEnabled;

-         if (ctx->Texture.Unit[u].Enabled ||

-             ctx->Texture.Unit[u].TexGenEnabled) {

-            _mesa_ActiveTextureARB(GL_TEXTURE0 + u);

-            _mesa_set_enable(ctx, GL_TEXTURE_1D, GL_FALSE);

-            _mesa_set_enable(ctx, GL_TEXTURE_2D, GL_FALSE);

-            _mesa_set_enable(ctx, GL_TEXTURE_3D, GL_FALSE);

-            if (ctx->Extensions.ARB_texture_cube_map)

-               _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP, GL_FALSE);

-            _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE, GL_FALSE);

-            _mesa_set_enable(ctx, GL_TEXTURE_GEN_S, GL_FALSE);

-            _mesa_set_enable(ctx, GL_TEXTURE_GEN_T, GL_FALSE);

-            _mesa_set_enable(ctx, GL_TEXTURE_GEN_R, GL_FALSE);

-            _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, GL_FALSE);

-         }

-      }

-

-      /* save current texture objects for unit[0] only */

-      for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {

-         _mesa_reference_texobj(&save->CurrentTexture[tgt],

-                                ctx->Texture.Unit[0].CurrentTex[tgt]);

-      }

-

-      /* set defaults for unit[0] */

-      _mesa_ActiveTextureARB(GL_TEXTURE0);

-      _mesa_ClientActiveTextureARB(GL_TEXTURE0);

-      _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);

-   }

-

-   if (state & META_TRANSFORM) {

-      GLuint activeTexture = ctx->Texture.CurrentUnit;

-      memcpy(save->ModelviewMatrix, ctx->ModelviewMatrixStack.Top->m,

-             16 * sizeof(GLfloat));

-      memcpy(save->ProjectionMatrix, ctx->ProjectionMatrixStack.Top->m,

-             16 * sizeof(GLfloat));

-      memcpy(save->TextureMatrix, ctx->TextureMatrixStack[0].Top->m,

-             16 * sizeof(GLfloat));

-      save->MatrixMode = ctx->Transform.MatrixMode;

-      /* set 1:1 vertex:pixel coordinate transform */

-      _mesa_ActiveTextureARB(GL_TEXTURE0);

-      _mesa_MatrixMode(GL_TEXTURE);

-      _mesa_LoadIdentity();

-      _mesa_ActiveTextureARB(GL_TEXTURE0 + activeTexture);

-      _mesa_MatrixMode(GL_MODELVIEW);

-      _mesa_LoadIdentity();

-      _mesa_MatrixMode(GL_PROJECTION);

-      _mesa_LoadIdentity();

-      _mesa_Ortho(0.0, ctx->DrawBuffer->Width,

-                  0.0, ctx->DrawBuffer->Height,

-                  -1.0, 1.0);

-      save->ClipPlanesEnabled = ctx->Transform.ClipPlanesEnabled;

-      if (ctx->Transform.ClipPlanesEnabled) {

-         GLuint i;

-         for (i = 0; i < ctx->Const.MaxClipPlanes; i++) {

-            _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);

-         }

-      }

-   }

-

-   if (state & META_VERTEX) {

-      /* save vertex array object state */

-      _mesa_reference_array_object(ctx, &save->ArrayObj,

-                                   ctx->Array.ArrayObj);

-      _mesa_reference_buffer_object(ctx, &save->ArrayBufferObj,

-                                    ctx->Array.ArrayBufferObj);

-      /* set some default state? */

-   }

-

-   if (state & META_VIEWPORT) {

-      /* save viewport state */

-      save->ViewportX = ctx->Viewport.X;

-      save->ViewportY = ctx->Viewport.Y;

-      save->ViewportW = ctx->Viewport.Width;

-      save->ViewportH = ctx->Viewport.Height;

-      /* set viewport to match window size */

-      if (ctx->Viewport.X != 0 ||

-          ctx->Viewport.Y != 0 ||

-          ctx->Viewport.Width != ctx->DrawBuffer->Width ||

-          ctx->Viewport.Height != ctx->DrawBuffer->Height) {

-         _mesa_set_viewport(ctx, 0, 0,

-                            ctx->DrawBuffer->Width, ctx->DrawBuffer->Height);

-      }

-      /* save depth range state */

-      save->DepthNear = ctx->Viewport.Near;

-      save->DepthFar = ctx->Viewport.Far;

-      /* set depth range to default */

-      _mesa_DepthRange(0.0, 1.0);

-   }

-

-   /* misc */

-   {

-      save->Lighting = ctx->Light.Enabled;

-      if (ctx->Light.Enabled)

-         _mesa_set_enable(ctx, GL_LIGHTING, GL_FALSE);

-   }

-}

-

-

-/**

- * Leave meta state.  This is like a light-weight version of glPopAttrib().

- */

-static void

-_mesa_meta_end(struct gl_context *ctx)

-{

-   struct save_state *save = &ctx->Meta->Save[--ctx->Meta->SaveStackDepth];

-   const GLbitfield state = save->SavedState;

-

-   if (state & META_ALPHA_TEST) {

-      if (ctx->Color.AlphaEnabled != save->AlphaEnabled)

-         _mesa_set_enable(ctx, GL_ALPHA_TEST, save->AlphaEnabled);

-      _mesa_AlphaFunc(save->AlphaFunc, save->AlphaRef);

-   }

-

-   if (state & META_BLEND) {

-      if (ctx->Color.BlendEnabled != save->BlendEnabled) {

-         if (ctx->Extensions.EXT_draw_buffers2) {

-            GLuint i;

-            for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {

-               _mesa_set_enablei(ctx, GL_BLEND, i, (save->BlendEnabled >> i) & 1);

-            }

-         }

-         else {

-            _mesa_set_enable(ctx, GL_BLEND, (save->BlendEnabled & 1));

-         }

-      }

-      if (ctx->Color.ColorLogicOpEnabled != save->ColorLogicOpEnabled)

-         _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP, save->ColorLogicOpEnabled);

-   }

-

-   if (state & META_COLOR_MASK) {

-      GLuint i;

-      for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {

-         if (!TEST_EQ_4V(ctx->Color.ColorMask[i], save->ColorMask[i])) {

-            if (i == 0) {

-               _mesa_ColorMask(save->ColorMask[i][0], save->ColorMask[i][1],

-                               save->ColorMask[i][2], save->ColorMask[i][3]);

-            }

-            else {

-               _mesa_ColorMaskIndexed(i,

-                                      save->ColorMask[i][0],

-                                      save->ColorMask[i][1],

-                                      save->ColorMask[i][2],

-                                      save->ColorMask[i][3]);

-            }

-         }

-      }

-   }

-

-   if (state & META_DEPTH_TEST) {

-      if (ctx->Depth.Test != save->Depth.Test)

-         _mesa_set_enable(ctx, GL_DEPTH_TEST, save->Depth.Test);

-      _mesa_DepthFunc(save->Depth.Func);

-      _mesa_DepthMask(save->Depth.Mask);

-   }

-

-   if (state & META_FOG) {

-      _mesa_set_enable(ctx, GL_FOG, save->Fog);

-   }

-

-   if (state & META_PIXEL_STORE) {

-      ctx->Pack = save->Pack;

-      ctx->Unpack = save->Unpack;

-   }

-

-   if (state & META_PIXEL_TRANSFER) {

-      ctx->Pixel.RedScale = save->RedScale;

-      ctx->Pixel.RedBias = save->RedBias;

-      ctx->Pixel.GreenScale = save->GreenScale;

-      ctx->Pixel.GreenBias = save->GreenBias;

-      ctx->Pixel.BlueScale = save->BlueScale;

-      ctx->Pixel.BlueBias = save->BlueBias;

-      ctx->Pixel.AlphaScale = save->AlphaScale;

-      ctx->Pixel.AlphaBias = save->AlphaBias;

-      ctx->Pixel.MapColorFlag = save->MapColorFlag;

-      /* XXX more state */

-      ctx->NewState |=_NEW_PIXEL;

-   }

-

-   if (state & META_RASTERIZATION) {

-      _mesa_PolygonMode(GL_FRONT, save->FrontPolygonMode);

-      _mesa_PolygonMode(GL_BACK, save->BackPolygonMode);

-      _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, save->PolygonStipple);

-      _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL, save->PolygonOffset);

-      _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, save->PolygonSmooth);

-      _mesa_set_enable(ctx, GL_CULL_FACE, save->PolygonCull);

-   }

-

-   if (state & META_SCISSOR) {

-      _mesa_set_enable(ctx, GL_SCISSOR_TEST, save->Scissor.Enabled);

-      _mesa_Scissor(save->Scissor.X, save->Scissor.Y,

-                    save->Scissor.Width, save->Scissor.Height);

-   }

-

-   if (state & META_SHADER) {

-      if (ctx->Extensions.ARB_vertex_program) {

-         _mesa_set_enable(ctx, GL_VERTEX_PROGRAM_ARB,

-                          save->VertexProgramEnabled);

-         _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current, 

-                                  save->VertexProgram);

-	 _mesa_reference_vertprog(ctx, &save->VertexProgram, NULL);

-      }

-

-      if (ctx->Extensions.ARB_fragment_program) {

-         _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB,

-                          save->FragmentProgramEnabled);

-         _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,

-                                  save->FragmentProgram);

-	 _mesa_reference_fragprog(ctx, &save->FragmentProgram, NULL);

-      }

-

-      if (ctx->Extensions.ARB_vertex_shader)

-	 _mesa_use_shader_program(ctx, GL_VERTEX_SHADER, save->VertexShader);

-

-      if (ctx->Extensions.ARB_geometry_shader4)

-	 _mesa_use_shader_program(ctx, GL_GEOMETRY_SHADER_ARB,

-				  save->GeometryShader);

-

-      if (ctx->Extensions.ARB_fragment_shader)

-	 _mesa_use_shader_program(ctx, GL_FRAGMENT_SHADER,

-				  save->FragmentShader);

-

-      _mesa_reference_shader_program(ctx, &ctx->Shader.ActiveProgram,

-				     save->ActiveShader);

-   }

-

-   if (state & META_STENCIL_TEST) {

-      const struct gl_stencil_attrib *stencil = &save->Stencil;

-

-      _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);

-      _mesa_ClearStencil(stencil->Clear);

-      if (ctx->Extensions.EXT_stencil_two_side) {

-         _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,

-                          stencil->TestTwoSide);

-         _mesa_ActiveStencilFaceEXT(stencil->ActiveFace

-                                    ? GL_BACK : GL_FRONT);

-      }

-      /* front state */

-      _mesa_StencilFuncSeparate(GL_FRONT,

-                                stencil->Function[0],

-                                stencil->Ref[0],

-                                stencil->ValueMask[0]);

-      _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);

-      _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],

-                              stencil->ZFailFunc[0],

-                              stencil->ZPassFunc[0]);

-      /* back state */

-      _mesa_StencilFuncSeparate(GL_BACK,

-                                stencil->Function[1],

-                                stencil->Ref[1],

-                                stencil->ValueMask[1]);

-      _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);

-      _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],

-                              stencil->ZFailFunc[1],

-                              stencil->ZPassFunc[1]);

-   }

-

-   if (state & META_TEXTURE) {

-      GLuint u, tgt;

-

-      ASSERT(ctx->Texture.CurrentUnit == 0);

-

-      /* restore texenv for unit[0] */

-      _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, save->EnvMode);

-

-      /* restore texture objects for unit[0] only */

-      for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {

-         _mesa_reference_texobj(&ctx->Texture.Unit[0].CurrentTex[tgt],

-                                save->CurrentTexture[tgt]);

-         _mesa_reference_texobj(&save->CurrentTexture[tgt], NULL);

-      }

-

-      /* Re-enable textures, texgen */

-      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {

-         if (save->TexEnabled[u]) {

-            _mesa_ActiveTextureARB(GL_TEXTURE0 + u);

-

-            if (save->TexEnabled[u] & TEXTURE_1D_BIT)

-               _mesa_set_enable(ctx, GL_TEXTURE_1D, GL_TRUE);

-            if (save->TexEnabled[u] & TEXTURE_2D_BIT)

-               _mesa_set_enable(ctx, GL_TEXTURE_2D, GL_TRUE);

-            if (save->TexEnabled[u] & TEXTURE_3D_BIT)

-               _mesa_set_enable(ctx, GL_TEXTURE_3D, GL_TRUE);

-            if (save->TexEnabled[u] & TEXTURE_CUBE_BIT)

-               _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP, GL_TRUE);

-            if (save->TexEnabled[u] & TEXTURE_RECT_BIT)

-               _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE, GL_TRUE);

-         }

-

-         if (save->TexGenEnabled[u]) {

-            _mesa_ActiveTextureARB(GL_TEXTURE0 + u);

-

-            if (save->TexGenEnabled[u] & S_BIT)

-               _mesa_set_enable(ctx, GL_TEXTURE_GEN_S, GL_TRUE);

-            if (save->TexGenEnabled[u] & T_BIT)

-               _mesa_set_enable(ctx, GL_TEXTURE_GEN_T, GL_TRUE);

-            if (save->TexGenEnabled[u] & R_BIT)

-               _mesa_set_enable(ctx, GL_TEXTURE_GEN_R, GL_TRUE);

-            if (save->TexGenEnabled[u] & Q_BIT)

-               _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, GL_TRUE);

-         }

-      }

-

-      /* restore current unit state */

-      _mesa_ActiveTextureARB(GL_TEXTURE0 + save->ActiveUnit);

-      _mesa_ClientActiveTextureARB(GL_TEXTURE0 + save->ClientActiveUnit);

-   }

-

-   if (state & META_TRANSFORM) {

-      GLuint activeTexture = ctx->Texture.CurrentUnit;

-      _mesa_ActiveTextureARB(GL_TEXTURE0);

-      _mesa_MatrixMode(GL_TEXTURE);

-      _mesa_LoadMatrixf(save->TextureMatrix);

-      _mesa_ActiveTextureARB(GL_TEXTURE0 + activeTexture);

-

-      _mesa_MatrixMode(GL_MODELVIEW);

-      _mesa_LoadMatrixf(save->ModelviewMatrix);

-

-      _mesa_MatrixMode(GL_PROJECTION);

-      _mesa_LoadMatrixf(save->ProjectionMatrix);

-

-      _mesa_MatrixMode(save->MatrixMode);

-

-      if (save->ClipPlanesEnabled) {

-         GLuint i;

-         for (i = 0; i < ctx->Const.MaxClipPlanes; i++) {

-            if (save->ClipPlanesEnabled & (1 << i)) {

-               _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);

-            }

-         }

-      }

-   }

-

-   if (state & META_VERTEX) {

-      /* restore vertex buffer object */

-      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, save->ArrayBufferObj->Name);

-      _mesa_reference_buffer_object(ctx, &save->ArrayBufferObj, NULL);

-

-      /* restore vertex array object */

-      _mesa_BindVertexArray(save->ArrayObj->Name);

-      _mesa_reference_array_object(ctx, &save->ArrayObj, NULL);

-   }

-

-   if (state & META_VIEWPORT) {

-      if (save->ViewportX != ctx->Viewport.X ||

-          save->ViewportY != ctx->Viewport.Y ||

-          save->ViewportW != ctx->Viewport.Width ||

-          save->ViewportH != ctx->Viewport.Height) {

-         _mesa_set_viewport(ctx, save->ViewportX, save->ViewportY,

-                            save->ViewportW, save->ViewportH);

-      }

-      _mesa_DepthRange(save->DepthNear, save->DepthFar);

-   }

-

-   /* misc */

-   if (save->Lighting) {

-      _mesa_set_enable(ctx, GL_LIGHTING, GL_TRUE);

-   }

-}

-

-

-/**

- * Convert Z from a normalized value in the range [0, 1] to an object-space

- * Z coordinate in [-1, +1] so that drawing at the new Z position with the

- * default/identity ortho projection results in the original Z value.

- * Used by the meta-Clear, Draw/CopyPixels and Bitmap functions where the Z

- * value comes from the clear value or raster position.

- */

-static INLINE GLfloat

-invert_z(GLfloat normZ)

-{

-   GLfloat objZ = 1.0 - 2.0 * normZ;

-   return objZ;

-}

-

-

-/**

- * One-time init for a temp_texture object.

- * Choose tex target, compute max tex size, etc.

- */

-static void

-init_temp_texture(struct gl_context *ctx, struct temp_texture *tex)

-{

-   /* prefer texture rectangle */

-   if (ctx->Extensions.NV_texture_rectangle) {

-      tex->Target = GL_TEXTURE_RECTANGLE;

-      tex->MaxSize = ctx->Const.MaxTextureRectSize;

-      tex->NPOT = GL_TRUE;

-   }

-   else {

-      /* use 2D texture, NPOT if possible */

-      tex->Target = GL_TEXTURE_2D;

-      tex->MaxSize = 1 << (ctx->Const.MaxTextureLevels - 1);

-      tex->NPOT = ctx->Extensions.ARB_texture_non_power_of_two;

-   }

-   tex->MinSize = 16;  /* 16 x 16 at least */

-   assert(tex->MaxSize > 0);

-

-   _mesa_GenTextures(1, &tex->TexObj);

-}

-

-

-/**

- * Return pointer to temp_texture info for non-bitmap ops.

- * This does some one-time init if needed.

- */

-static struct temp_texture *

-get_temp_texture(struct gl_context *ctx)

-{

-   struct temp_texture *tex = &ctx->Meta->TempTex;

-

-   if (!tex->TexObj) {

-      init_temp_texture(ctx, tex);

-   }

-

-   return tex;

-}

-

-

-/**

- * Return pointer to temp_texture info for _mesa_meta_bitmap().

- * We use a separate texture for bitmaps to reduce texture

- * allocation/deallocation.

- */

-static struct temp_texture *

-get_bitmap_temp_texture(struct gl_context *ctx)

-{

-   struct temp_texture *tex = &ctx->Meta->Bitmap.Tex;

-

-   if (!tex->TexObj) {

-      init_temp_texture(ctx, tex);

-   }

-

-   return tex;

-}

-

-

-/**

- * Compute the width/height of texture needed to draw an image of the

- * given size.  Return a flag indicating whether the current texture

- * can be re-used (glTexSubImage2D) or if a new texture needs to be

- * allocated (glTexImage2D).

- * Also, compute s/t texcoords for drawing.

- *

- * \return GL_TRUE if new texture is needed, GL_FALSE otherwise

- */

-static GLboolean

-alloc_texture(struct temp_texture *tex,

-              GLsizei width, GLsizei height, GLenum intFormat)

-{

-   GLboolean newTex = GL_FALSE;

-

-   ASSERT(width <= tex->MaxSize);

-   ASSERT(height <= tex->MaxSize);

-

-   if (width > tex->Width ||

-       height > tex->Height ||

-       intFormat != tex->IntFormat) {

-      /* alloc new texture (larger or different format) */

-

-      if (tex->NPOT) {

-         /* use non-power of two size */

-         tex->Width = MAX2(tex->MinSize, width);

-         tex->Height = MAX2(tex->MinSize, height);

-      }

-      else {

-         /* find power of two size */

-         GLsizei w, h;

-         w = h = tex->MinSize;

-         while (w < width)

-            w *= 2;

-         while (h < height)

-            h *= 2;

-         tex->Width = w;

-         tex->Height = h;

-      }

-

-      tex->IntFormat = intFormat;

-

-      newTex = GL_TRUE;

-   }

-

-   /* compute texcoords */

-   if (tex->Target == GL_TEXTURE_RECTANGLE) {

-      tex->Sright = (GLfloat) width;

-      tex->Ttop = (GLfloat) height;

-   }

-   else {

-      tex->Sright = (GLfloat) width / tex->Width;

-      tex->Ttop = (GLfloat) height / tex->Height;

-   }

-

-   return newTex;

-}

-

-

-/**

- * Setup/load texture for glCopyPixels or glBlitFramebuffer.

- */

-static void

-setup_copypix_texture(struct temp_texture *tex,

-                      GLboolean newTex,

-                      GLint srcX, GLint srcY,

-                      GLsizei width, GLsizei height, GLenum intFormat,

-                      GLenum filter)

-{

-   _mesa_BindTexture(tex->Target, tex->TexObj);

-   _mesa_TexParameteri(tex->Target, GL_TEXTURE_MIN_FILTER, filter);

-   _mesa_TexParameteri(tex->Target, GL_TEXTURE_MAG_FILTER, filter);

-   _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);

-

-   /* copy framebuffer image to texture */

-   if (newTex) {

-      /* create new tex image */

-      if (tex->Width == width && tex->Height == height) {

-         /* create new tex with framebuffer data */

-         _mesa_CopyTexImage2D(tex->Target, 0, tex->IntFormat,

-                              srcX, srcY, width, height, 0);

-      }

-      else {

-         /* create empty texture */

-         _mesa_TexImage2D(tex->Target, 0, tex->IntFormat,

-                          tex->Width, tex->Height, 0,

-                          intFormat, GL_UNSIGNED_BYTE, NULL);

-         /* load image */

-         _mesa_CopyTexSubImage2D(tex->Target, 0,

-                                 0, 0, srcX, srcY, width, height);

-      }

-   }

-   else {

-      /* replace existing tex image */

-      _mesa_CopyTexSubImage2D(tex->Target, 0,

-                              0, 0, srcX, srcY, width, height);

-   }

-}

-

-

-/**

- * Setup/load texture for glDrawPixels.

- */

-static void

-setup_drawpix_texture(struct gl_context *ctx,

-		      struct temp_texture *tex,

-                      GLboolean newTex,

-                      GLenum texIntFormat,

-                      GLsizei width, GLsizei height,

-                      GLenum format, GLenum type,

-                      const GLvoid *pixels)

-{

-   _mesa_BindTexture(tex->Target, tex->TexObj);

-   _mesa_TexParameteri(tex->Target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

-   _mesa_TexParameteri(tex->Target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

-   _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);

-

-   /* copy pixel data to texture */

-   if (newTex) {

-      /* create new tex image */

-      if (tex->Width == width && tex->Height == height) {

-         /* create new tex and load image data */

-         _mesa_TexImage2D(tex->Target, 0, tex->IntFormat,

-                          tex->Width, tex->Height, 0, format, type, pixels);

-      }

-      else {

-	 struct gl_buffer_object *save_unpack_obj = NULL;

-

-	 _mesa_reference_buffer_object(ctx, &save_unpack_obj,

-				       ctx->Unpack.BufferObj);

-	 _mesa_BindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);

-         /* create empty texture */

-         _mesa_TexImage2D(tex->Target, 0, tex->IntFormat,

-                          tex->Width, tex->Height, 0, format, type, NULL);

-	 if (save_unpack_obj != NULL)

-	    _mesa_BindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB,

-				save_unpack_obj->Name);

-         /* load image */

-         _mesa_TexSubImage2D(tex->Target, 0,

-                             0, 0, width, height, format, type, pixels);

-      }

-   }

-   else {

-      /* replace existing tex image */

-      _mesa_TexSubImage2D(tex->Target, 0,

-                          0, 0, width, height, format, type, pixels);

-   }

-}

-

-

-

-/**

- * One-time init for drawing depth pixels.

- */

-static void

-init_blit_depth_pixels(struct gl_context *ctx)

-{

-   static const char *program =

-      "!!ARBfp1.0\n"

-      "TEX result.depth, fragment.texcoord[0], texture[0], %s; \n"

-      "END \n";

-   char program2[200];

-   struct blit_state *blit = &ctx->Meta->Blit;

-   struct temp_texture *tex = get_temp_texture(ctx);

-   const char *texTarget;

-

-   assert(blit->DepthFP == 0);

-

-   /* replace %s with "RECT" or "2D" */

-   assert(strlen(program) + 4 < sizeof(program2));

-   if (tex->Target == GL_TEXTURE_RECTANGLE)

-      texTarget = "RECT";

-   else

-      texTarget = "2D";

-   _mesa_snprintf(program2, sizeof(program2), program, texTarget);

-

-   _mesa_GenPrograms(1, &blit->DepthFP);

-   _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP);

-   _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,

-                          strlen(program2), (const GLubyte *) program2);

-}

-

-

-/**

- * Try to do a glBlitFramebuffer using no-copy texturing.

- * We can do this when the src renderbuffer is actually a texture.

- * But if the src buffer == dst buffer we cannot do this.

- *

- * \return new buffer mask indicating the buffers left to blit using the

- *         normal path.

- */

-static GLbitfield

-blitframebuffer_texture(struct gl_context *ctx,

-                        GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,

-                        GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,

-                        GLbitfield mask, GLenum filter)

-{

-   if (mask & GL_COLOR_BUFFER_BIT) {

-      const struct gl_framebuffer *drawFb = ctx->DrawBuffer;

-      const struct gl_framebuffer *readFb = ctx->ReadBuffer;

-      const struct gl_renderbuffer_attachment *drawAtt =

-         &drawFb->Attachment[drawFb->_ColorDrawBufferIndexes[0]];

-      const struct gl_renderbuffer_attachment *readAtt =

-         &readFb->Attachment[readFb->_ColorReadBufferIndex];

-

-      if (readAtt && readAtt->Texture) {

-         const struct gl_texture_object *texObj = readAtt->Texture;

-         const GLuint srcLevel = readAtt->TextureLevel;

-         const GLenum minFilterSave = texObj->MinFilter;

-         const GLenum magFilterSave = texObj->MagFilter;

-         const GLint baseLevelSave = texObj->BaseLevel;

-         const GLint maxLevelSave = texObj->MaxLevel;

-         const GLenum wrapSSave = texObj->WrapS;

-         const GLenum wrapTSave = texObj->WrapT;

-         const GLenum target = texObj->Target;

-

-         if (drawAtt->Texture == readAtt->Texture) {

-            /* Can't use same texture as both the source and dest.  We need

-             * to handle overlapping blits and besides, some hw may not

-             * support this.

-             */

-            return mask;

-         }

-

-         if (target != GL_TEXTURE_2D && target != GL_TEXTURE_RECTANGLE_ARB) {

-            /* Can't handle other texture types at this time */

-            return mask;

-         }

-

-         /*

-         printf("Blit from texture!\n");

-         printf("  srcAtt %p  dstAtt %p\n", readAtt, drawAtt);

-         printf("  srcTex %p  dstText %p\n", texObj, drawAtt->Texture);

-         */

-

-         /* Prepare src texture state */

-         _mesa_BindTexture(target, texObj->Name);

-         _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, filter);

-         _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, filter);

-         if (target != GL_TEXTURE_RECTANGLE_ARB) {

-            _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, srcLevel);

-            _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, srcLevel);

-         }

-         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);

-         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);

-         _mesa_set_enable(ctx, target, GL_TRUE);

-

-         /* Prepare vertex data (the VBO was previously created and bound) */

-         {

-            struct vertex {

-               GLfloat x, y, s, t;

-            };

-            struct vertex verts[4];

-            GLfloat s0, t0, s1, t1;

-

-            if (target == GL_TEXTURE_2D) {

-               const struct gl_texture_image *texImage

-                   = _mesa_select_tex_image(ctx, texObj, target, srcLevel);

-               s0 = srcX0 / (float) texImage->Width;

-               s1 = srcX1 / (float) texImage->Width;

-               t0 = srcY0 / (float) texImage->Height;

-               t1 = srcY1 / (float) texImage->Height;

-            }

-            else {

-               assert(target == GL_TEXTURE_RECTANGLE_ARB);

-               s0 = srcX0;

-               s1 = srcX1;

-               t0 = srcY0;

-               t1 = srcY1;

-            }

-

-            verts[0].x = (GLfloat) dstX0;

-            verts[0].y = (GLfloat) dstY0;

-            verts[1].x = (GLfloat) dstX1;

-            verts[1].y = (GLfloat) dstY0;

-            verts[2].x = (GLfloat) dstX1;

-            verts[2].y = (GLfloat) dstY1;

-            verts[3].x = (GLfloat) dstX0;

-            verts[3].y = (GLfloat) dstY1;

-

-            verts[0].s = s0;

-            verts[0].t = t0;

-            verts[1].s = s1;

-            verts[1].t = t0;

-            verts[2].s = s1;

-            verts[2].t = t1;

-            verts[3].s = s0;

-            verts[3].t = t1;

-

-            _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);

-         }

-

-         _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);

-

-         /* Restore texture object state, the texture binding will

-          * be restored by _mesa_meta_end().

-          */

-         _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, minFilterSave);

-         _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, magFilterSave);

-         if (target != GL_TEXTURE_RECTANGLE_ARB) {

-            _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, baseLevelSave);

-            _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, maxLevelSave);

-         }

-         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, wrapSSave);

-         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, wrapTSave);

-

-         /* Done with color buffer */

-         mask &= ~GL_COLOR_BUFFER_BIT;

-      }

-   }

-

-   return mask;

-}

-

-

-/**

- * Meta implementation of ctx->Driver.BlitFramebuffer() in terms

- * of texture mapping and polygon rendering.

- */

-void

-_mesa_meta_BlitFramebuffer(struct gl_context *ctx,

-                           GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,

-                           GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,

-                           GLbitfield mask, GLenum filter)

-{

-   struct blit_state *blit = &ctx->Meta->Blit;

-   struct temp_texture *tex = get_temp_texture(ctx);

-   const GLsizei maxTexSize = tex->MaxSize;

-   const GLint srcX = MIN2(srcX0, srcX1);

-   const GLint srcY = MIN2(srcY0, srcY1);

-   const GLint srcW = abs(srcX1 - srcX0);

-   const GLint srcH = abs(srcY1 - srcY0);

-   const GLboolean srcFlipX = srcX1 < srcX0;

-   const GLboolean srcFlipY = srcY1 < srcY0;

-   struct vertex {

-      GLfloat x, y, s, t;

-   };

-   struct vertex verts[4];

-   GLboolean newTex;

-

-   if (srcW > maxTexSize || srcH > maxTexSize) {

-      /* XXX avoid this fallback */

-      _swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,

-                              dstX0, dstY0, dstX1, dstY1, mask, filter);

-      return;

-   }

-

-   if (srcFlipX) {

-      GLint tmp = dstX0;

-      dstX0 = dstX1;

-      dstX1 = tmp;

-   }

-

-   if (srcFlipY) {

-      GLint tmp = dstY0;

-      dstY0 = dstY1;

-      dstY1 = tmp;

-   }

-

-   /* only scissor effects blit so save/clear all other relevant state */

-   _mesa_meta_begin(ctx, ~META_SCISSOR);

-

-   if (blit->ArrayObj == 0) {

-      /* one-time setup */

-

-      /* create vertex array object */

-      _mesa_GenVertexArrays(1, &blit->ArrayObj);

-      _mesa_BindVertexArray(blit->ArrayObj);

-

-      /* create vertex array buffer */

-      _mesa_GenBuffersARB(1, &blit->VBO);

-      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, blit->VBO);

-      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),

-                          NULL, GL_DYNAMIC_DRAW_ARB);

-

-      /* setup vertex arrays */

-      _mesa_VertexPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(x));

-      _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(s));

-      _mesa_EnableClientState(GL_VERTEX_ARRAY);

-      _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);

-   }

-   else {

-      _mesa_BindVertexArray(blit->ArrayObj);

-      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, blit->VBO);

-   }

-

-   /* Try faster, direct texture approach first */

-   mask = blitframebuffer_texture(ctx, srcX0, srcY0, srcX1, srcY1,

-                                  dstX0, dstY0, dstX1, dstY1, mask, filter);

-   if (mask == 0x0) {

-      _mesa_meta_end(ctx);

-      return;

-   }

-

-   /* Continue with "normal" approach which involves copying the src rect

-    * into a temporary texture and is "blitted" by drawing a textured quad.

-    */

-

-   newTex = alloc_texture(tex, srcW, srcH, GL_RGBA);

-

-   /* vertex positions/texcoords (after texture allocation!) */

-   {

-      verts[0].x = (GLfloat) dstX0;

-      verts[0].y = (GLfloat) dstY0;

-      verts[1].x = (GLfloat) dstX1;

-      verts[1].y = (GLfloat) dstY0;

-      verts[2].x = (GLfloat) dstX1;

-      verts[2].y = (GLfloat) dstY1;

-      verts[3].x = (GLfloat) dstX0;

-      verts[3].y = (GLfloat) dstY1;

-

-      verts[0].s = 0.0F;

-      verts[0].t = 0.0F;

-      verts[1].s = tex->Sright;

-      verts[1].t = 0.0F;

-      verts[2].s = tex->Sright;

-      verts[2].t = tex->Ttop;

-      verts[3].s = 0.0F;

-      verts[3].t = tex->Ttop;

-

-      /* upload new vertex data */

-      _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);

-   }

-

-   _mesa_set_enable(ctx, tex->Target, GL_TRUE);

-

-   if (mask & GL_COLOR_BUFFER_BIT) {

-      setup_copypix_texture(tex, newTex, srcX, srcY, srcW, srcH,

-                            GL_RGBA, filter);

-      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);

-      mask &= ~GL_COLOR_BUFFER_BIT;

-   }

-

-   if (mask & GL_DEPTH_BUFFER_BIT) {

-      GLuint *tmp = (GLuint *) malloc(srcW * srcH * sizeof(GLuint));

-      if (tmp) {

-         if (!blit->DepthFP)

-            init_blit_depth_pixels(ctx);

-

-         /* maybe change tex format here */

-         newTex = alloc_texture(tex, srcW, srcH, GL_DEPTH_COMPONENT);

-

-         _mesa_ReadPixels(srcX, srcY, srcW, srcH,

-                          GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, tmp);

-

-         setup_drawpix_texture(ctx, tex, newTex, GL_DEPTH_COMPONENT, srcW, srcH,

-                               GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, tmp);

-

-         _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP);

-         _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);

-         _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);

-         _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_TRUE);

-         _mesa_DepthFunc(GL_ALWAYS);

-         _mesa_DepthMask(GL_TRUE);

-

-         _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);

-         mask &= ~GL_DEPTH_BUFFER_BIT;

-

-         free(tmp);

-      }

-   }

-

-   if (mask & GL_STENCIL_BUFFER_BIT) {

-      /* XXX can't easily do stencil */

-   }

-

-   _mesa_set_enable(ctx, tex->Target, GL_FALSE);

-

-   _mesa_meta_end(ctx);

-

-   if (mask) {

-      _swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,

-                              dstX0, dstY0, dstX1, dstY1, mask, filter);

-   }

-}

-

-

-/**

- * Meta implementation of ctx->Driver.Clear() in terms of polygon rendering.

- */

-void

-_mesa_meta_Clear(struct gl_context *ctx, GLbitfield buffers)

-{

-   struct clear_state *clear = &ctx->Meta->Clear;

-   struct vertex {

-      GLfloat x, y, z, r, g, b, a;

-   };

-   struct vertex verts[4];

-   /* save all state but scissor, pixel pack/unpack */

-   GLbitfield metaSave = META_ALL - META_SCISSOR - META_PIXEL_STORE;

-   const GLuint stencilMax = (1 << ctx->DrawBuffer->Visual.stencilBits) - 1;

-

-   if (buffers & BUFFER_BITS_COLOR) {

-      /* if clearing color buffers, don't save/restore colormask */

-      metaSave -= META_COLOR_MASK;

-   }

-

-   _mesa_meta_begin(ctx, metaSave);

-

-   if (clear->ArrayObj == 0) {

-      /* one-time setup */

-

-      /* create vertex array object */

-      _mesa_GenVertexArrays(1, &clear->ArrayObj);

-      _mesa_BindVertexArray(clear->ArrayObj);

-

-      /* create vertex array buffer */

-      _mesa_GenBuffersARB(1, &clear->VBO);

-      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, clear->VBO);

-

-      /* setup vertex arrays */

-      _mesa_VertexPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(x));

-      _mesa_ColorPointer(4, GL_FLOAT, sizeof(struct vertex), OFFSET(r));

-      _mesa_EnableClientState(GL_VERTEX_ARRAY);

-      _mesa_EnableClientState(GL_COLOR_ARRAY);

-   }

-   else {

-      _mesa_BindVertexArray(clear->ArrayObj);

-      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, clear->VBO);

-   }

-

-   /* GL_COLOR_BUFFER_BIT */

-   if (buffers & BUFFER_BITS_COLOR) {

-      /* leave colormask, glDrawBuffer state as-is */

-   }

-   else {

-      ASSERT(metaSave & META_COLOR_MASK);

-      _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);

-   }

-

-   /* GL_DEPTH_BUFFER_BIT */

-   if (buffers & BUFFER_BIT_DEPTH) {

-      _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_TRUE);

-      _mesa_DepthFunc(GL_ALWAYS);

-      _mesa_DepthMask(GL_TRUE);

-   }

-   else {

-      assert(!ctx->Depth.Test);

-   }

-

-   /* GL_STENCIL_BUFFER_BIT */

-   if (buffers & BUFFER_BIT_STENCIL) {

-      _mesa_set_enable(ctx, GL_STENCIL_TEST, GL_TRUE);

-      _mesa_StencilOpSeparate(GL_FRONT_AND_BACK,

-                              GL_REPLACE, GL_REPLACE, GL_REPLACE);

-      _mesa_StencilFuncSeparate(GL_FRONT_AND_BACK, GL_ALWAYS,

-                                ctx->Stencil.Clear & stencilMax,

-                                ctx->Stencil.WriteMask[0]);

-   }

-   else {

-      assert(!ctx->Stencil.Enabled);

-   }

-

-   /* vertex positions/colors */

-   {

-      const GLfloat x0 = (GLfloat) ctx->DrawBuffer->_Xmin;

-      const GLfloat y0 = (GLfloat) ctx->DrawBuffer->_Ymin;

-      const GLfloat x1 = (GLfloat) ctx->DrawBuffer->_Xmax;

-      const GLfloat y1 = (GLfloat) ctx->DrawBuffer->_Ymax;

-      const GLfloat z = invert_z(ctx->Depth.Clear);

-      GLuint i;

-

-      verts[0].x = x0;

-      verts[0].y = y0;

-      verts[0].z = z;

-      verts[1].x = x1;

-      verts[1].y = y0;

-      verts[1].z = z;

-      verts[2].x = x1;

-      verts[2].y = y1;

-      verts[2].z = z;

-      verts[3].x = x0;

-      verts[3].y = y1;

-      verts[3].z = z;

-

-      /* vertex colors */

-      for (i = 0; i < 4; i++) {

-         verts[i].r = ctx->Color.ClearColor[0];

-         verts[i].g = ctx->Color.ClearColor[1];

-         verts[i].b = ctx->Color.ClearColor[2];

-         verts[i].a = ctx->Color.ClearColor[3];

-      }

-

-      /* upload new vertex data */

-      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts), verts,

-			  GL_DYNAMIC_DRAW_ARB);

-   }

-

-   /* draw quad */

-   _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);

-

-   _mesa_meta_end(ctx);

-}

-

-

-/**

- * Meta implementation of ctx->Driver.CopyPixels() in terms

- * of texture mapping and polygon rendering.

- */

-void

-_mesa_meta_CopyPixels(struct gl_context *ctx, GLint srcX, GLint srcY,

-                      GLsizei width, GLsizei height,

-                      GLint dstX, GLint dstY, GLenum type)

-{

-   struct copypix_state *copypix = &ctx->Meta->CopyPix;

-   struct temp_texture *tex = get_temp_texture(ctx);

-   struct vertex {

-      GLfloat x, y, z, s, t;

-   };

-   struct vertex verts[4];

-   GLboolean newTex;

-   GLenum intFormat = GL_RGBA;

-

-   if (type != GL_COLOR ||

-       ctx->_ImageTransferState ||

-       ctx->Fog.Enabled ||

-       width > tex->MaxSize ||

-       height > tex->MaxSize) {

-      /* XXX avoid this fallback */

-      _swrast_CopyPixels(ctx, srcX, srcY, width, height, dstX, dstY, type);

-      return;

-   }

-

-   /* Most GL state applies to glCopyPixels, but a there's a few things

-    * we need to override:

-    */

-   _mesa_meta_begin(ctx, (META_RASTERIZATION |

-                          META_SHADER |

-                          META_TEXTURE |

-                          META_TRANSFORM |

-                          META_VERTEX |

-                          META_VIEWPORT));

-

-   if (copypix->ArrayObj == 0) {

-      /* one-time setup */

-

-      /* create vertex array object */

-      _mesa_GenVertexArrays(1, &copypix->ArrayObj);

-      _mesa_BindVertexArray(copypix->ArrayObj);

-

-      /* create vertex array buffer */

-      _mesa_GenBuffersARB(1, &copypix->VBO);

-      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, copypix->VBO);

-      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),

-                          NULL, GL_DYNAMIC_DRAW_ARB);

-

-      /* setup vertex arrays */

-      _mesa_VertexPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(x));

-      _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(s));

-      _mesa_EnableClientState(GL_VERTEX_ARRAY);

-      _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);

-   }

-   else {

-      _mesa_BindVertexArray(copypix->ArrayObj);

-      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, copypix->VBO);

-   }

-

-   newTex = alloc_texture(tex, width, height, intFormat);

-

-   /* vertex positions, texcoords (after texture allocation!) */

-   {

-      const GLfloat dstX0 = (GLfloat) dstX;

-      const GLfloat dstY0 = (GLfloat) dstY;

-      const GLfloat dstX1 = dstX + width * ctx->Pixel.ZoomX;

-      const GLfloat dstY1 = dstY + height * ctx->Pixel.ZoomY;

-      const GLfloat z = invert_z(ctx->Current.RasterPos[2]);

-

-      verts[0].x = dstX0;

-      verts[0].y = dstY0;

-      verts[0].z = z;

-      verts[0].s = 0.0F;

-      verts[0].t = 0.0F;

-      verts[1].x = dstX1;

-      verts[1].y = dstY0;

-      verts[1].z = z;

-      verts[1].s = tex->Sright;

-      verts[1].t = 0.0F;

-      verts[2].x = dstX1;

-      verts[2].y = dstY1;

-      verts[2].z = z;

-      verts[2].s = tex->Sright;

-      verts[2].t = tex->Ttop;

-      verts[3].x = dstX0;

-      verts[3].y = dstY1;

-      verts[3].z = z;

-      verts[3].s = 0.0F;

-      verts[3].t = tex->Ttop;

-

-      /* upload new vertex data */

-      _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);

-   }

-

-   /* Alloc/setup texture */

-   setup_copypix_texture(tex, newTex, srcX, srcY, width, height,

-                         GL_RGBA, GL_NEAREST);

-

-   _mesa_set_enable(ctx, tex->Target, GL_TRUE);

-

-   /* draw textured quad */

-   _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);

-

-   _mesa_set_enable(ctx, tex->Target, GL_FALSE);

-

-   _mesa_meta_end(ctx);

-}

-

-

-

-/**

- * When the glDrawPixels() image size is greater than the max rectangle

- * texture size we use this function to break the glDrawPixels() image

- * into tiles which fit into the max texture size.

- */

-static void

-tiled_draw_pixels(struct gl_context *ctx,

-                  GLint tileSize,

-                  GLint x, GLint y, GLsizei width, GLsizei height,

-                  GLenum format, GLenum type,

-                  const struct gl_pixelstore_attrib *unpack,

-                  const GLvoid *pixels)

-{

-   struct gl_pixelstore_attrib tileUnpack = *unpack;

-   GLint i, j;

-

-   if (tileUnpack.RowLength == 0)

-      tileUnpack.RowLength = width;

-

-   for (i = 0; i < width; i += tileSize) {

-      const GLint tileWidth = MIN2(tileSize, width - i);

-      const GLint tileX = (GLint) (x + i * ctx->Pixel.ZoomX);

-

-      tileUnpack.SkipPixels = unpack->SkipPixels + i;

-

-      for (j = 0; j < height; j += tileSize) {

-         const GLint tileHeight = MIN2(tileSize, height - j);

-         const GLint tileY = (GLint) (y + j * ctx->Pixel.ZoomY);

-

-         tileUnpack.SkipRows = unpack->SkipRows + j;

-

-         _mesa_meta_DrawPixels(ctx, tileX, tileY, tileWidth, tileHeight,

-                               format, type, &tileUnpack, pixels);

-      }

-   }

-}

-

-

-/**

- * One-time init for drawing stencil pixels.

- */

-static void

-init_draw_stencil_pixels(struct gl_context *ctx)

-{

-   /* This program is run eight times, once for each stencil bit.

-    * The stencil values to draw are found in an 8-bit alpha texture.

-    * We read the texture/stencil value and test if bit 'b' is set.

-    * If the bit is not set, use KIL to kill the fragment.

-    * Finally, we use the stencil test to update the stencil buffer.

-    *

-    * The basic algorithm for checking if a bit is set is:

-    *   if (is_odd(value / (1 << bit)))

-    *      result is one (or non-zero).

-    *   else

-    *      result is zero.

-    * The program parameter contains three values:

-    *   parm.x = 255 / (1 << bit)

-    *   parm.y = 0.5

-    *   parm.z = 0.0

-    */

-   static const char *program =

-      "!!ARBfp1.0\n"

-      "PARAM parm = program.local[0]; \n"

-      "TEMP t; \n"

-      "TEX t, fragment.texcoord[0], texture[0], %s; \n"   /* NOTE %s here! */

-      "# t = t * 255 / bit \n"

-      "MUL t.x, t.a, parm.x; \n"

-      "# t = (int) t \n"

-      "FRC t.y, t.x; \n"

-      "SUB t.x, t.x, t.y; \n"

-      "# t = t * 0.5 \n"

-      "MUL t.x, t.x, parm.y; \n"

-      "# t = fract(t.x) \n"

-      "FRC t.x, t.x; # if t.x != 0, then the bit is set \n"

-      "# t.x = (t.x == 0 ? 1 : 0) \n"

-      "SGE t.x, -t.x, parm.z; \n"

-      "KIL -t.x; \n"

-      "# for debug only \n"

-      "#MOV result.color, t.x; \n"

-      "END \n";

-   char program2[1000];

-   struct drawpix_state *drawpix = &ctx->Meta->DrawPix;

-   struct temp_texture *tex = get_temp_texture(ctx);

-   const char *texTarget;

-

-   assert(drawpix->StencilFP == 0);

-

-   /* replace %s with "RECT" or "2D" */

-   assert(strlen(program) + 4 < sizeof(program2));

-   if (tex->Target == GL_TEXTURE_RECTANGLE)

-      texTarget = "RECT";

-   else

-      texTarget = "2D";

-   _mesa_snprintf(program2, sizeof(program2), program, texTarget);

-

-   _mesa_GenPrograms(1, &drawpix->StencilFP);

-   _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->StencilFP);

-   _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,

-                          strlen(program2), (const GLubyte *) program2);

-}

-

-

-/**

- * One-time init for drawing depth pixels.

- */

-static void

-init_draw_depth_pixels(struct gl_context *ctx)

-{

-   static const char *program =

-      "!!ARBfp1.0\n"

-      "PARAM color = program.local[0]; \n"

-      "TEX result.depth, fragment.texcoord[0], texture[0], %s; \n"

-      "MOV result.color, color; \n"

-      "END \n";

-   char program2[200];

-   struct drawpix_state *drawpix = &ctx->Meta->DrawPix;

-   struct temp_texture *tex = get_temp_texture(ctx);

-   const char *texTarget;

-

-   assert(drawpix->DepthFP == 0);

-

-   /* replace %s with "RECT" or "2D" */

-   assert(strlen(program) + 4 < sizeof(program2));

-   if (tex->Target == GL_TEXTURE_RECTANGLE)

-      texTarget = "RECT";

-   else

-      texTarget = "2D";

-   _mesa_snprintf(program2, sizeof(program2), program, texTarget);

-

-   _mesa_GenPrograms(1, &drawpix->DepthFP);

-   _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->DepthFP);

-   _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,

-                          strlen(program2), (const GLubyte *) program2);

-}

-

-

-/**

- * Meta implementation of ctx->Driver.DrawPixels() in terms

- * of texture mapping and polygon rendering.

- */

-void

-_mesa_meta_DrawPixels(struct gl_context *ctx,

-                      GLint x, GLint y, GLsizei width, GLsizei height,

-                      GLenum format, GLenum type,

-                      const struct gl_pixelstore_attrib *unpack,

-                      const GLvoid *pixels)

-{

-   struct drawpix_state *drawpix = &ctx->Meta->DrawPix;

-   struct temp_texture *tex = get_temp_texture(ctx);

-   const struct gl_pixelstore_attrib unpackSave = ctx->Unpack;

-   const GLuint origStencilMask = ctx->Stencil.WriteMask[0];

-   struct vertex {

-      GLfloat x, y, z, s, t;

-   };

-   struct vertex verts[4];

-   GLenum texIntFormat;

-   GLboolean fallback, newTex;

-   GLbitfield metaExtraSave = 0x0;

-   GLuint vbo;

-

-   /*

-    * Determine if we can do the glDrawPixels with texture mapping.

-    */

-   fallback = GL_FALSE;

-   if (ctx->_ImageTransferState ||

-       ctx->Fog.Enabled) {

-      fallback = GL_TRUE;

-   }

-

-   if (_mesa_is_color_format(format)) {

-      /* use more compact format when possible */

-      /* XXX disable special case for GL_LUMINANCE for now to work around

-       * apparent i965 driver bug (see bug #23670).

-       */

-      if (/*format == GL_LUMINANCE ||*/ format == GL_LUMINANCE_ALPHA)

-         texIntFormat = format;

-      else

-         texIntFormat = GL_RGBA;

-   }

-   else if (_mesa_is_stencil_format(format)) {

-      if (ctx->Extensions.ARB_fragment_program &&

-          ctx->Pixel.IndexShift == 0 &&

-          ctx->Pixel.IndexOffset == 0 &&

-          type == GL_UNSIGNED_BYTE) {

-         /* We'll store stencil as alpha.  This only works for GLubyte

-          * image data because of how incoming values are mapped to alpha

-          * in [0,1].

-          */

-         texIntFormat = GL_ALPHA;

-         metaExtraSave = (META_COLOR_MASK |

-                          META_DEPTH_TEST |

-                          META_SHADER |

-                          META_STENCIL_TEST);

-      }

-      else {

-         fallback = GL_TRUE;

-      }

-   }

-   else if (_mesa_is_depth_format(format)) {

-      if (ctx->Extensions.ARB_depth_texture &&

-          ctx->Extensions.ARB_fragment_program) {

-         texIntFormat = GL_DEPTH_COMPONENT;

-         metaExtraSave = (META_SHADER);

-      }

-      else {

-         fallback = GL_TRUE;

-      }

-   }

-   else {

-      fallback = GL_TRUE;

-   }

-

-   if (fallback) {

-      _swrast_DrawPixels(ctx, x, y, width, height,

-                         format, type, unpack, pixels);

-      return;

-   }

-

-   /*

-    * Check image size against max texture size, draw as tiles if needed.

-    */

-   if (width > tex->MaxSize || height > tex->MaxSize) {

-      tiled_draw_pixels(ctx, tex->MaxSize, x, y, width, height,

-                        format, type, unpack, pixels);

-      return;

-   }

-

-   /* Most GL state applies to glDrawPixels (like blending, stencil, etc),

-    * but a there's a few things we need to override:

-    */

-   _mesa_meta_begin(ctx, (META_RASTERIZATION |

-                          META_SHADER |

-                          META_TEXTURE |

-                          META_TRANSFORM |

-                          META_VERTEX |

-                          META_VIEWPORT |

-                          metaExtraSave));

-

-   newTex = alloc_texture(tex, width, height, texIntFormat);

-

-   /* vertex positions, texcoords (after texture allocation!) */

-   {

-      const GLfloat x0 = (GLfloat) x;

-      const GLfloat y0 = (GLfloat) y;

-      const GLfloat x1 = x + width * ctx->Pixel.ZoomX;

-      const GLfloat y1 = y + height * ctx->Pixel.ZoomY;

-      const GLfloat z = invert_z(ctx->Current.RasterPos[2]);

-

-      verts[0].x = x0;

-      verts[0].y = y0;

-      verts[0].z = z;

-      verts[0].s = 0.0F;

-      verts[0].t = 0.0F;

-      verts[1].x = x1;

-      verts[1].y = y0;

-      verts[1].z = z;

-      verts[1].s = tex->Sright;

-      verts[1].t = 0.0F;

-      verts[2].x = x1;

-      verts[2].y = y1;

-      verts[2].z = z;

-      verts[2].s = tex->Sright;

-      verts[2].t = tex->Ttop;

-      verts[3].x = x0;

-      verts[3].y = y1;

-      verts[3].z = z;

-      verts[3].s = 0.0F;

-      verts[3].t = tex->Ttop;

-   }

-

-   if (drawpix->ArrayObj == 0) {

-      /* one-time setup: create vertex array object */

-      _mesa_GenVertexArrays(1, &drawpix->ArrayObj);

-   }

-   _mesa_BindVertexArray(drawpix->ArrayObj);

-

-   /* create vertex array buffer */

-   _mesa_GenBuffersARB(1, &vbo);

-   _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, vbo);

-   _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),

-                       verts, GL_DYNAMIC_DRAW_ARB);

-

-   /* setup vertex arrays */

-   _mesa_VertexPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(x));

-   _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(s));

-   _mesa_EnableClientState(GL_VERTEX_ARRAY);

-   _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);

-

-   /* set given unpack params */

-   ctx->Unpack = *unpack;

-

-   _mesa_set_enable(ctx, tex->Target, GL_TRUE);

-

-   if (_mesa_is_stencil_format(format)) {

-      /* Drawing stencil */

-      GLint bit;

-

-      if (!drawpix->StencilFP)

-         init_draw_stencil_pixels(ctx);

-

-      setup_drawpix_texture(ctx, tex, newTex, texIntFormat, width, height,

-                            GL_ALPHA, type, pixels);

-

-      _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);

-

-      _mesa_set_enable(ctx, GL_STENCIL_TEST, GL_TRUE);

-

-      /* set all stencil bits to 0 */

-      _mesa_StencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);

-      _mesa_StencilFunc(GL_ALWAYS, 0, 255);

-      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);

-  

-      /* set stencil bits to 1 where needed */

-      _mesa_StencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);

-

-      _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->StencilFP);

-      _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);

-

-      for (bit = 0; bit < ctx->DrawBuffer->Visual.stencilBits; bit++) {

-         const GLuint mask = 1 << bit;

-         if (mask & origStencilMask) {

-            _mesa_StencilFunc(GL_ALWAYS, mask, mask);

-            _mesa_StencilMask(mask);

-

-            _mesa_ProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB, 0,

-                                             255.0 / mask, 0.5, 0.0, 0.0);

-

-            _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);

-         }

-      }

-   }

-   else if (_mesa_is_depth_format(format)) {

-      /* Drawing depth */

-      if (!drawpix->DepthFP)

-         init_draw_depth_pixels(ctx);

-

-      _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->DepthFP);

-      _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);

-

-      /* polygon color = current raster color */

-      _mesa_ProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 0,

-                                        ctx->Current.RasterColor);

-

-      setup_drawpix_texture(ctx, tex, newTex, texIntFormat, width, height,

-                            format, type, pixels);

-

-      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);

-   }

-   else {

-      /* Drawing RGBA */

-      setup_drawpix_texture(ctx, tex, newTex, texIntFormat, width, height,

-                            format, type, pixels);

-      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);

-   }

-

-   _mesa_set_enable(ctx, tex->Target, GL_FALSE);

-

-   _mesa_DeleteBuffersARB(1, &vbo);

-

-   /* restore unpack params */

-   ctx->Unpack = unpackSave;

-

-   _mesa_meta_end(ctx);

-}

-

-static GLboolean

-alpha_test_raster_color(struct gl_context *ctx)

-{

-   GLfloat alpha = ctx->Current.RasterColor[ACOMP];

-   GLfloat ref = ctx->Color.AlphaRef;

-

-   switch (ctx->Color.AlphaFunc) {

-      case GL_NEVER:

-	 return GL_FALSE;

-      case GL_LESS:

-	 return alpha < ref;

-      case GL_EQUAL:

-	 return alpha == ref;

-      case GL_LEQUAL:

-	 return alpha <= ref;

-      case GL_GREATER:

-	 return alpha > ref;

-      case GL_NOTEQUAL:

-	 return alpha != ref;

-      case GL_GEQUAL:

-	 return alpha >= ref;

-      case GL_ALWAYS:

-	 return GL_TRUE;

-      default:

-	 assert(0);

-	 return GL_FALSE;

-   }

-}

-

-/**

- * Do glBitmap with a alpha texture quad.  Use the alpha test to cull

- * the 'off' bits.  A bitmap cache as in the gallium/mesa state

- * tracker would improve performance a lot.

- */

-void

-_mesa_meta_Bitmap(struct gl_context *ctx,

-                  GLint x, GLint y, GLsizei width, GLsizei height,

-                  const struct gl_pixelstore_attrib *unpack,

-                  const GLubyte *bitmap1)

-{

-   struct bitmap_state *bitmap = &ctx->Meta->Bitmap;

-   struct temp_texture *tex = get_bitmap_temp_texture(ctx);

-   const GLenum texIntFormat = GL_ALPHA;

-   const struct gl_pixelstore_attrib unpackSave = *unpack;

-   GLubyte fg, bg;

-   struct vertex {

-      GLfloat x, y, z, s, t, r, g, b, a;

-   };

-   struct vertex verts[4];

-   GLboolean newTex;

-   GLubyte *bitmap8;

-

-   /*

-    * Check if swrast fallback is needed.

-    */

-   if (ctx->_ImageTransferState ||

-       ctx->FragmentProgram._Enabled ||

-       ctx->Fog.Enabled ||

-       ctx->Texture._EnabledUnits ||

-       width > tex->MaxSize ||

-       height > tex->MaxSize) {

-      _swrast_Bitmap(ctx, x, y, width, height, unpack, bitmap1);

-      return;

-   }

-

-   if (ctx->Color.AlphaEnabled && !alpha_test_raster_color(ctx))

-      return;

-

-   /* Most GL state applies to glBitmap (like blending, stencil, etc),

-    * but a there's a few things we need to override:

-    */

-   _mesa_meta_begin(ctx, (META_ALPHA_TEST |

-                          META_PIXEL_STORE |

-                          META_RASTERIZATION |

-                          META_SHADER |

-                          META_TEXTURE |

-                          META_TRANSFORM |

-                          META_VERTEX |

-                          META_VIEWPORT));

-

-   if (bitmap->ArrayObj == 0) {

-      /* one-time setup */

-

-      /* create vertex array object */

-      _mesa_GenVertexArraysAPPLE(1, &bitmap->ArrayObj);

-      _mesa_BindVertexArrayAPPLE(bitmap->ArrayObj);

-

-      /* create vertex array buffer */

-      _mesa_GenBuffersARB(1, &bitmap->VBO);

-      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, bitmap->VBO);

-      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),

-                          NULL, GL_DYNAMIC_DRAW_ARB);

-

-      /* setup vertex arrays */

-      _mesa_VertexPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(x));

-      _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(s));

-      _mesa_ColorPointer(4, GL_FLOAT, sizeof(struct vertex), OFFSET(r));

-      _mesa_EnableClientState(GL_VERTEX_ARRAY);

-      _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);

-      _mesa_EnableClientState(GL_COLOR_ARRAY);

-   }

-   else {

-      _mesa_BindVertexArray(bitmap->ArrayObj);

-      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, bitmap->VBO);

-   }

-

-   newTex = alloc_texture(tex, width, height, texIntFormat);

-

-   /* vertex positions, texcoords, colors (after texture allocation!) */

-   {

-      const GLfloat x0 = (GLfloat) x;

-      const GLfloat y0 = (GLfloat) y;

-      const GLfloat x1 = (GLfloat) (x + width);

-      const GLfloat y1 = (GLfloat) (y + height);

-      const GLfloat z = invert_z(ctx->Current.RasterPos[2]);

-      GLuint i;

-

-      verts[0].x = x0;

-      verts[0].y = y0;

-      verts[0].z = z;

-      verts[0].s = 0.0F;

-      verts[0].t = 0.0F;

-      verts[1].x = x1;

-      verts[1].y = y0;

-      verts[1].z = z;

-      verts[1].s = tex->Sright;

-      verts[1].t = 0.0F;

-      verts[2].x = x1;

-      verts[2].y = y1;

-      verts[2].z = z;

-      verts[2].s = tex->Sright;

-      verts[2].t = tex->Ttop;

-      verts[3].x = x0;

-      verts[3].y = y1;

-      verts[3].z = z;

-      verts[3].s = 0.0F;

-      verts[3].t = tex->Ttop;

-

-      for (i = 0; i < 4; i++) {

-         verts[i].r = ctx->Current.RasterColor[0];

-         verts[i].g = ctx->Current.RasterColor[1];

-         verts[i].b = ctx->Current.RasterColor[2];

-         verts[i].a = ctx->Current.RasterColor[3];

-      }

-

-      /* upload new vertex data */

-      _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);

-   }

-

-   /* choose different foreground/background alpha values */

-   CLAMPED_FLOAT_TO_UBYTE(fg, ctx->Current.RasterColor[ACOMP]);

-   bg = (fg > 127 ? 0 : 255);

-

-   bitmap1 = _mesa_map_pbo_source(ctx, &unpackSave, bitmap1);

-   if (!bitmap1) {

-      _mesa_meta_end(ctx);

-      return;

-   }

-

-   bitmap8 = (GLubyte *) malloc(width * height);

-   if (bitmap8) {

-      memset(bitmap8, bg, width * height);

-      _mesa_expand_bitmap(width, height, &unpackSave, bitmap1,

-                          bitmap8, width, fg);

-

-      _mesa_set_enable(ctx, tex->Target, GL_TRUE);

-

-      _mesa_set_enable(ctx, GL_ALPHA_TEST, GL_TRUE);

-      _mesa_AlphaFunc(GL_NOTEQUAL, UBYTE_TO_FLOAT(bg));

-

-      setup_drawpix_texture(ctx, tex, newTex, texIntFormat, width, height,

-                            GL_ALPHA, GL_UNSIGNED_BYTE, bitmap8);

-

-      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);

-

-      _mesa_set_enable(ctx, tex->Target, GL_FALSE);

-

-      free(bitmap8);

-   }

-

-   _mesa_unmap_pbo_source(ctx, &unpackSave);

-

-   _mesa_meta_end(ctx);

-}

-

-

-/**

- * Check if the call to _mesa_meta_GenerateMipmap() will require a

- * software fallback.  The fallback path will require that the texture

- * images are mapped.

- * \return GL_TRUE if a fallback is needed, GL_FALSE otherwise

- */

-GLboolean

-_mesa_meta_check_generate_mipmap_fallback(struct gl_context *ctx, GLenum target,

-                                          struct gl_texture_object *texObj)

-{

-   const GLuint fboSave = ctx->DrawBuffer->Name;

-   struct gen_mipmap_state *mipmap = &ctx->Meta->Mipmap;

-   struct gl_texture_image *baseImage;

-   GLuint srcLevel;

-   GLenum status;

-

-   /* check for fallbacks */

-   if (!ctx->Extensions.EXT_framebuffer_object ||

-       target == GL_TEXTURE_3D) {

-      return GL_TRUE;

-   }

-

-   srcLevel = texObj->BaseLevel;

-   baseImage = _mesa_select_tex_image(ctx, texObj, target, srcLevel);

-   if (!baseImage || _mesa_is_format_compressed(baseImage->TexFormat)) {

-      return GL_TRUE;

-   }

-

-   /*

-    * Test that we can actually render in the texture's format.

-    */

-   if (!mipmap->FBO)

-      _mesa_GenFramebuffersEXT(1, &mipmap->FBO);

-   _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, mipmap->FBO);

-

-   if (target == GL_TEXTURE_1D) {

-      _mesa_FramebufferTexture1DEXT(GL_FRAMEBUFFER_EXT,

-                                    GL_COLOR_ATTACHMENT0_EXT,

-                                    target, texObj->Name, srcLevel);

-   }

-#if 0

-   /* other work is needed to enable 3D mipmap generation */

-   else if (target == GL_TEXTURE_3D) {

-      GLint zoffset = 0;

-      _mesa_FramebufferTexture3DEXT(GL_FRAMEBUFFER_EXT,

-                                    GL_COLOR_ATTACHMENT0_EXT,

-                                    target, texObj->Name, srcLevel, zoffset);

-   }

-#endif

-   else {

-      /* 2D / cube */

-      _mesa_FramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,

-                                    GL_COLOR_ATTACHMENT0_EXT,

-                                    target, texObj->Name, srcLevel);

-   }

-

-   status = _mesa_CheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);

-

-   _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, fboSave);

-

-   if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-      return GL_TRUE;

-   }

-

-   return GL_FALSE;

-}

-

-

-/**

- * Called via ctx->Driver.GenerateMipmap()

- * Note: texture borders and 3D texture support not yet complete.

- */

-void

-_mesa_meta_GenerateMipmap(struct gl_context *ctx, GLenum target,

-                          struct gl_texture_object *texObj)

-{

-   struct gen_mipmap_state *mipmap = &ctx->Meta->Mipmap;

-   struct vertex {

-      GLfloat x, y, s, t, r;

-   };

-   struct vertex verts[4];

-   const GLuint baseLevel = texObj->BaseLevel;

-   const GLuint maxLevel = texObj->MaxLevel;

-   const GLenum minFilterSave = texObj->MinFilter;

-   const GLenum magFilterSave = texObj->MagFilter;

-   const GLint maxLevelSave = texObj->MaxLevel;

-   const GLboolean genMipmapSave = texObj->GenerateMipmap;

-   const GLenum wrapSSave = texObj->WrapS;

-   const GLenum wrapTSave = texObj->WrapT;

-   const GLenum wrapRSave = texObj->WrapR;

-   const GLuint fboSave = ctx->DrawBuffer->Name;

-   const GLuint original_active_unit = ctx->Texture.CurrentUnit;

-   GLenum faceTarget;

-   GLuint dstLevel;

-   GLuint border = 0;

-

-   if (_mesa_meta_check_generate_mipmap_fallback(ctx, target, texObj)) {

-      _mesa_generate_mipmap(ctx, target, texObj);

-      return;

-   }

-

-   if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X &&

-       target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z) {

-      faceTarget = target;

-      target = GL_TEXTURE_CUBE_MAP;

-   }

-   else {

-      faceTarget = target;

-   }

-

-   _mesa_meta_begin(ctx, META_ALL);

-

-   if (original_active_unit != 0)

-      _mesa_BindTexture(target, texObj->Name);

-

-   if (mipmap->ArrayObj == 0) {

-      /* one-time setup */

-

-      /* create vertex array object */

-      _mesa_GenVertexArraysAPPLE(1, &mipmap->ArrayObj);

-      _mesa_BindVertexArrayAPPLE(mipmap->ArrayObj);

-

-      /* create vertex array buffer */

-      _mesa_GenBuffersARB(1, &mipmap->VBO);

-      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, mipmap->VBO);

-      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),

-                          NULL, GL_DYNAMIC_DRAW_ARB);

-

-      /* setup vertex arrays */

-      _mesa_VertexPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(x));

-      _mesa_TexCoordPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(s));

-      _mesa_EnableClientState(GL_VERTEX_ARRAY);

-      _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);

-   }

-   else {

-      _mesa_BindVertexArray(mipmap->ArrayObj);

-      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, mipmap->VBO);

-   }

-

-   if (!mipmap->FBO) {

-      _mesa_GenFramebuffersEXT(1, &mipmap->FBO);

-   }

-   _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, mipmap->FBO);

-

-   _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);

-   _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

-   _mesa_TexParameteri(target, GL_GENERATE_MIPMAP, GL_FALSE);

-   _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);

-   _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

-   _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);

-

-   _mesa_set_enable(ctx, target, GL_TRUE);

-

-   /* setup texcoords once (XXX what about border?) */

-   switch (faceTarget) {

-   case GL_TEXTURE_1D:

-   case GL_TEXTURE_2D:

-      verts[0].s = 0.0F;

-      verts[0].t = 0.0F;

-      verts[0].r = 0.0F;

-      verts[1].s = 1.0F;

-      verts[1].t = 0.0F;

-      verts[1].r = 0.0F;

-      verts[2].s = 1.0F;

-      verts[2].t = 1.0F;

-      verts[2].r = 0.0F;

-      verts[3].s = 0.0F;

-      verts[3].t = 1.0F;

-      verts[3].r = 0.0F;

-      break;

-   case GL_TEXTURE_3D:

-      abort();

-      break;

-   default:

-      /* cube face */

-      {

-         static const GLfloat st[4][2] = {

-            {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f}

-         };

-         GLuint i;

-

-         /* loop over quad verts */

-         for (i = 0; i < 4; i++) {

-            /* Compute sc = +/-scale and tc = +/-scale.

-             * Not +/-1 to avoid cube face selection ambiguity near the edges,

-             * though that can still sometimes happen with this scale factor...

-             */

-            const GLfloat scale = 0.9999f;

-            const GLfloat sc = (2.0f * st[i][0] - 1.0f) * scale;

-            const GLfloat tc = (2.0f * st[i][1] - 1.0f) * scale;

-

-            switch (faceTarget) {

-            case GL_TEXTURE_CUBE_MAP_POSITIVE_X:

-               verts[i].s = 1.0f;

-               verts[i].t = -tc;

-               verts[i].r = -sc;

-               break;

-            case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:

-               verts[i].s = -1.0f;

-               verts[i].t = -tc;

-               verts[i].r = sc;

-               break;

-            case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:

-               verts[i].s = sc;

-               verts[i].t = 1.0f;

-               verts[i].r = tc;

-               break;

-            case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:

-               verts[i].s = sc;

-               verts[i].t = -1.0f;

-               verts[i].r = -tc;

-               break;

-            case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:

-               verts[i].s = sc;

-               verts[i].t = -tc;

-               verts[i].r = 1.0f;

-               break;

-            case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:

-               verts[i].s = -sc;

-               verts[i].t = -tc;

-               verts[i].r = -1.0f;

-               break;

-            default:

-               assert(0);

-            }

-         }

-      }

-   }

-

-   _mesa_set_enable(ctx, target, GL_TRUE);

-

-   /* setup vertex positions */

-   {

-      verts[0].x = 0.0F;

-      verts[0].y = 0.0F;

-      verts[1].x = 1.0F;

-      verts[1].y = 0.0F;

-      verts[2].x = 1.0F;

-      verts[2].y = 1.0F;

-      verts[3].x = 0.0F;

-      verts[3].y = 1.0F;

-      

-      /* upload new vertex data */

-      _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);

-   }

-

-   /* setup projection matrix */

-   _mesa_MatrixMode(GL_PROJECTION);

-   _mesa_LoadIdentity();

-   _mesa_Ortho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);

-

-   /* texture is already locked, unlock now */

-   _mesa_unlock_texture(ctx, texObj);

-

-   for (dstLevel = baseLevel + 1; dstLevel <= maxLevel; dstLevel++) {

-      const struct gl_texture_image *srcImage;

-      const GLuint srcLevel = dstLevel - 1;

-      GLsizei srcWidth, srcHeight, srcDepth;

-      GLsizei dstWidth, dstHeight, dstDepth;

-      GLenum status;

-

-      srcImage = _mesa_select_tex_image(ctx, texObj, faceTarget, srcLevel);

-      assert(srcImage->Border == 0); /* XXX we can fix this */

-

-      /* src size w/out border */

-      srcWidth = srcImage->Width - 2 * border;

-      srcHeight = srcImage->Height - 2 * border;

-      srcDepth = srcImage->Depth - 2 * border;

-

-      /* new dst size w/ border */

-      dstWidth = MAX2(1, srcWidth / 2) + 2 * border;

-      dstHeight = MAX2(1, srcHeight / 2) + 2 * border;

-      dstDepth = MAX2(1, srcDepth / 2) + 2 * border;

-

-      if (dstWidth == srcImage->Width &&

-          dstHeight == srcImage->Height &&

-          dstDepth == srcImage->Depth) {

-         /* all done */

-         break;

-      }

-

-      /* Set MaxLevel large enough to hold the new level when we allocate it  */

-      _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, dstLevel);

-

-      /* Create empty dest image */

-      if (target == GL_TEXTURE_1D) {

-         _mesa_TexImage1D(target, dstLevel, srcImage->InternalFormat,

-                          dstWidth, border,

-                          GL_RGBA, GL_UNSIGNED_BYTE, NULL);

-      }

-      else if (target == GL_TEXTURE_3D) {

-         _mesa_TexImage3D(target, dstLevel, srcImage->InternalFormat,

-                          dstWidth, dstHeight, dstDepth, border,

-                          GL_RGBA, GL_UNSIGNED_BYTE, NULL);

-      }

-      else {

-         /* 2D or cube */

-         _mesa_TexImage2D(faceTarget, dstLevel, srcImage->InternalFormat,

-                          dstWidth, dstHeight, border,

-                          GL_RGBA, GL_UNSIGNED_BYTE, NULL);

-

-         if (target == GL_TEXTURE_CUBE_MAP) {

-            /* If texturing from a cube, we need to make sure all src faces

-             * have been defined (even if we're not sampling from them.)

-             * Otherwise the texture object will be 'incomplete' and

-             * texturing from it will not be allowed.

-             */

-            GLuint face;

-            for (face = 0; face < 6; face++) {

-               if (!texObj->Image[face][srcLevel] ||

-                   texObj->Image[face][srcLevel]->Width != srcWidth) {

-                  _mesa_TexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face,

-                                   srcLevel, srcImage->InternalFormat,

-                                   srcWidth, srcHeight, border,

-                                   GL_RGBA, GL_UNSIGNED_BYTE, NULL);

-               }

-            }

-         }

-      }

-

-      /* limit minification to src level */

-      _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, srcLevel);

-

-      /* Set to draw into the current dstLevel */

-      if (target == GL_TEXTURE_1D) {

-         _mesa_FramebufferTexture1DEXT(GL_FRAMEBUFFER_EXT,

-                                       GL_COLOR_ATTACHMENT0_EXT,

-                                       target,

-                                       texObj->Name,

-                                       dstLevel);

-      }

-      else if (target == GL_TEXTURE_3D) {

-         GLint zoffset = 0; /* XXX unfinished */

-         _mesa_FramebufferTexture3DEXT(GL_FRAMEBUFFER_EXT,

-                                       GL_COLOR_ATTACHMENT0_EXT,

-                                       target,

-                                       texObj->Name,

-                                       dstLevel, zoffset);

-      }

-      else {

-         /* 2D / cube */

-         _mesa_FramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,

-                                       GL_COLOR_ATTACHMENT0_EXT,

-                                       faceTarget,

-                                       texObj->Name,

-                                       dstLevel);

-      }

-

-      _mesa_DrawBuffer(GL_COLOR_ATTACHMENT0_EXT);

-

-      /* sanity check */

-      status = _mesa_CheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);

-      if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-         abort();

-         break;

-      }

-

-      assert(dstWidth == ctx->DrawBuffer->Width);

-      assert(dstHeight == ctx->DrawBuffer->Height);

-

-      /* setup viewport */

-      _mesa_set_viewport(ctx, 0, 0, dstWidth, dstHeight);

-

-      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);

-   }

-

-   _mesa_lock_texture(ctx, texObj); /* relock */

-

-   _mesa_meta_end(ctx);

-

-   _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, minFilterSave);

-   _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, magFilterSave);

-   _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, maxLevelSave);

-   _mesa_TexParameteri(target, GL_GENERATE_MIPMAP, genMipmapSave);

-   _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, wrapSSave);

-   _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, wrapTSave);

-   _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, wrapRSave);

-

-   _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, fboSave);

-}

-

-

-/**

- * Determine the GL data type to use for the temporary image read with

- * ReadPixels() and passed to Tex[Sub]Image().

- */

-static GLenum

-get_temp_image_type(struct gl_context *ctx, GLenum baseFormat)

-{

-   switch (baseFormat) {

-   case GL_RGBA:

-   case GL_RGB:

-   case GL_ALPHA:

-   case GL_LUMINANCE:

-   case GL_LUMINANCE_ALPHA:

-   case GL_INTENSITY:

-      if (ctx->DrawBuffer->Visual.redBits <= 8)

-         return GL_UNSIGNED_BYTE;

-      else if (ctx->DrawBuffer->Visual.redBits <= 8)

-         return GL_UNSIGNED_SHORT;

-      else

-         return GL_FLOAT;

-   case GL_DEPTH_COMPONENT:

-      return GL_UNSIGNED_INT;

-   case GL_DEPTH_STENCIL:

-      return GL_UNSIGNED_INT_24_8;

-   default:

-      _mesa_problem(ctx, "Unexpected format in get_temp_image_type()");

-      return 0;

-   }

-}

-

-

-/**

- * Helper for _mesa_meta_CopyTexImage1/2D() functions.

- * Have to be careful with locking and meta state for pixel transfer.

- */

-static void

-copy_tex_image(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,

-               GLenum internalFormat, GLint x, GLint y,

-               GLsizei width, GLsizei height, GLint border)

-{

-   struct gl_texture_object *texObj;

-   struct gl_texture_image *texImage;

-   GLenum format, type;

-   GLint bpp;

-   void *buf;

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-   texImage = _mesa_get_tex_image(ctx, texObj, target, level);

-

-   /* Choose format/type for temporary image buffer */

-   format = _mesa_base_tex_format(ctx, internalFormat);

-   type = get_temp_image_type(ctx, format);

-   bpp = _mesa_bytes_per_pixel(format, type);

-   if (bpp <= 0) {

-      _mesa_problem(ctx, "Bad bpp in meta copy_tex_image()");

-      return;

-   }

-

-   /*

-    * Alloc image buffer (XXX could use a PBO)

-    */

-   buf = malloc(width * height * bpp);

-   if (!buf) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);

-      return;

-   }

-

-   _mesa_unlock_texture(ctx, texObj); /* need to unlock first */

-

-   /*

-    * Read image from framebuffer (disable pixel transfer ops)

-    */

-   _mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER);

-   ctx->Driver.ReadPixels(ctx, x, y, width, height,

-			  format, type, &ctx->Pack, buf);

-   _mesa_meta_end(ctx);

-

-   if (texImage->Data) {

-      ctx->Driver.FreeTexImageData(ctx, texImage);

-   }

-

-   /* The texture's format was already chosen in _mesa_CopyTexImage() */

-   ASSERT(texImage->TexFormat != MESA_FORMAT_NONE);

-

-   /*

-    * Store texture data (with pixel transfer ops)

-    */

-   _mesa_meta_begin(ctx, META_PIXEL_STORE);

-

-   _mesa_update_state(ctx); /* to update pixel transfer state */

-

-   if (target == GL_TEXTURE_1D) {

-      ctx->Driver.TexImage1D(ctx, target, level, internalFormat,

-                             width, border, format, type,

-                             buf, &ctx->Unpack, texObj, texImage);

-   }

-   else {

-      ctx->Driver.TexImage2D(ctx, target, level, internalFormat,

-                             width, height, border, format, type,

-                             buf, &ctx->Unpack, texObj, texImage);

-   }

-   _mesa_meta_end(ctx);

-

-   _mesa_lock_texture(ctx, texObj); /* re-lock */

-

-   free(buf);

-}

-

-

-void

-_mesa_meta_CopyTexImage1D(struct gl_context *ctx, GLenum target, GLint level,

-                          GLenum internalFormat, GLint x, GLint y,

-                          GLsizei width, GLint border)

-{

-   copy_tex_image(ctx, 1, target, level, internalFormat, x, y,

-                  width, 1, border);

-}

-

-

-void

-_mesa_meta_CopyTexImage2D(struct gl_context *ctx, GLenum target, GLint level,

-                          GLenum internalFormat, GLint x, GLint y,

-                          GLsizei width, GLsizei height, GLint border)

-{

-   copy_tex_image(ctx, 2, target, level, internalFormat, x, y,

-                  width, height, border);

-}

-

-

-

-/**

- * Helper for _mesa_meta_CopyTexSubImage1/2/3D() functions.

- * Have to be careful with locking and meta state for pixel transfer.

- */

-static void

-copy_tex_sub_image(struct gl_context *ctx,

-                   GLuint dims, GLenum target, GLint level,

-                   GLint xoffset, GLint yoffset, GLint zoffset,

-                   GLint x, GLint y,

-                   GLsizei width, GLsizei height)

-{

-   struct gl_texture_object *texObj;

-   struct gl_texture_image *texImage;

-   GLenum format, type;

-   GLint bpp;

-   void *buf;

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-   texImage = _mesa_select_tex_image(ctx, texObj, target, level);

-

-   /* Choose format/type for temporary image buffer */

-   format = _mesa_get_format_base_format(texImage->TexFormat);

-   type = get_temp_image_type(ctx, format);

-   bpp = _mesa_bytes_per_pixel(format, type);

-   if (bpp <= 0) {

-      _mesa_problem(ctx, "Bad bpp in meta copy_tex_sub_image()");

-      return;

-   }

-

-   /*

-    * Alloc image buffer (XXX could use a PBO)

-    */

-   buf = malloc(width * height * bpp);

-   if (!buf) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage%uD", dims);

-      return;

-   }

-

-   _mesa_unlock_texture(ctx, texObj); /* need to unlock first */

-

-   /*

-    * Read image from framebuffer (disable pixel transfer ops)

-    */

-   _mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER);

-   ctx->Driver.ReadPixels(ctx, x, y, width, height,

-			  format, type, &ctx->Pack, buf);

-   _mesa_meta_end(ctx);

-

-   _mesa_update_state(ctx); /* to update pixel transfer state */

-

-   /*

-    * Store texture data (with pixel transfer ops)

-    */

-   _mesa_meta_begin(ctx, META_PIXEL_STORE);

-   if (target == GL_TEXTURE_1D) {

-      ctx->Driver.TexSubImage1D(ctx, target, level, xoffset,

-                                width, format, type, buf,

-                                &ctx->Unpack, texObj, texImage);

-   }

-   else if (target == GL_TEXTURE_3D) {

-      ctx->Driver.TexSubImage3D(ctx, target, level, xoffset, yoffset, zoffset,

-                                width, height, 1, format, type, buf,

-                                &ctx->Unpack, texObj, texImage);

-   }

-   else {

-      ctx->Driver.TexSubImage2D(ctx, target, level, xoffset, yoffset,

-                                width, height, format, type, buf,

-                                &ctx->Unpack, texObj, texImage);

-   }

-   _mesa_meta_end(ctx);

-

-   _mesa_lock_texture(ctx, texObj); /* re-lock */

-

-   free(buf);

-}

-

-

-void

-_mesa_meta_CopyTexSubImage1D(struct gl_context *ctx, GLenum target, GLint level,

-                             GLint xoffset,

-                             GLint x, GLint y, GLsizei width)

-{

-   copy_tex_sub_image(ctx, 1, target, level, xoffset, 0, 0,

-                      x, y, width, 1);

-}

-

-

-void

-_mesa_meta_CopyTexSubImage2D(struct gl_context *ctx, GLenum target, GLint level,

-                             GLint xoffset, GLint yoffset,

-                             GLint x, GLint y,

-                             GLsizei width, GLsizei height)

-{

-   copy_tex_sub_image(ctx, 2, target, level, xoffset, yoffset, 0,

-                      x, y, width, height);

-}

-

-

-void

-_mesa_meta_CopyTexSubImage3D(struct gl_context *ctx, GLenum target, GLint level,

-                             GLint xoffset, GLint yoffset, GLint zoffset,

-                             GLint x, GLint y,

-                             GLsizei width, GLsizei height)

-{

-   copy_tex_sub_image(ctx, 3, target, level, xoffset, yoffset, zoffset,

-                      x, y, width, height);

-}

-

-

-void

-_mesa_meta_CopyColorTable(struct gl_context *ctx,

-                          GLenum target, GLenum internalformat,

-                          GLint x, GLint y, GLsizei width)

-{

-   GLfloat *buf;

-

-   buf = (GLfloat *) malloc(width * 4 * sizeof(GLfloat));

-   if (!buf) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyColorTable");

-      return;

-   }

-

-   /*

-    * Read image from framebuffer (disable pixel transfer ops)

-    */

-   _mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER);

-   ctx->Driver.ReadPixels(ctx, x, y, width, 1,

-                          GL_RGBA, GL_FLOAT, &ctx->Pack, buf);

-

-   _mesa_ColorTable(target, internalformat, width, GL_RGBA, GL_FLOAT, buf);

-

-   _mesa_meta_end(ctx);

-

-   free(buf);

-}

-

-

-void

-_mesa_meta_CopyColorSubTable(struct gl_context *ctx,GLenum target, GLsizei start,

-                             GLint x, GLint y, GLsizei width)

-{

-   GLfloat *buf;

-

-   buf = (GLfloat *) malloc(width * 4 * sizeof(GLfloat));

-   if (!buf) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyColorSubTable");

-      return;

-   }

-

-   /*

-    * Read image from framebuffer (disable pixel transfer ops)

-    */

-   _mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER);

-   ctx->Driver.ReadPixels(ctx, x, y, width, 1,

-                          GL_RGBA, GL_FLOAT, &ctx->Pack, buf);

-

-   _mesa_ColorSubTable(target, start, width, GL_RGBA, GL_FLOAT, buf);

-

-   _mesa_meta_end(ctx);

-

-   free(buf);

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.6
+ *
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Meta operations.  Some GL operations can be expressed in terms of
+ * other GL operations.  For example, glBlitFramebuffer() can be done
+ * with texture mapping and glClear() can be done with polygon rendering.
+ *
+ * \author Brian Paul
+ */
+
+
+#include "main/glheader.h"
+#include "main/mtypes.h"
+#include "main/imports.h"
+#include "main/arbprogram.h"
+#include "main/arrayobj.h"
+#include "main/blend.h"
+#include "main/bufferobj.h"
+#include "main/buffers.h"
+#include "main/colortab.h"
+#include "main/depth.h"
+#include "main/enable.h"
+#include "main/fbobject.h"
+#include "main/formats.h"
+#include "main/image.h"
+#include "main/macros.h"
+#include "main/matrix.h"
+#include "main/mipmap.h"
+#include "main/pbo.h"
+#include "main/polygon.h"
+#include "main/readpix.h"
+#include "main/scissor.h"
+#include "main/shaderapi.h"
+#include "main/shaderobj.h"
+#include "main/state.h"
+#include "main/stencil.h"
+#include "main/texobj.h"
+#include "main/texenv.h"
+#include "main/teximage.h"
+#include "main/texparam.h"
+#include "main/texstate.h"
+#include "main/varray.h"
+#include "main/viewport.h"
+#include "program/program.h"
+#include "swrast/swrast.h"
+#include "drivers/common/meta.h"
+
+
+/** Return offset in bytes of the field within a vertex struct */
+#define OFFSET(FIELD) ((void *) offsetof(struct vertex, FIELD))
+
+
+/**
+ * Flags passed to _mesa_meta_begin().
+ */
+/*@{*/
+#define META_ALL              ~0x0
+#define META_ALPHA_TEST        0x1
+#define META_BLEND             0x2  /**< includes logicop */
+#define META_COLOR_MASK        0x4
+#define META_DEPTH_TEST        0x8
+#define META_FOG              0x10
+#define META_PIXEL_STORE      0x20
+#define META_PIXEL_TRANSFER   0x40
+#define META_RASTERIZATION    0x80
+#define META_SCISSOR         0x100
+#define META_SHADER          0x200
+#define META_STENCIL_TEST    0x400
+#define META_TRANSFORM       0x800 /**< modelview, projection, clip planes */
+#define META_TEXTURE        0x1000
+#define META_VERTEX         0x2000
+#define META_VIEWPORT       0x4000
+/*@}*/
+
+
+/**
+ * State which we may save/restore across meta ops.
+ * XXX this may be incomplete...
+ */
+struct save_state
+{
+   GLbitfield SavedState;  /**< bitmask of META_* flags */
+
+   /** META_ALPHA_TEST */
+   GLboolean AlphaEnabled;
+   GLenum AlphaFunc;
+   GLclampf AlphaRef;
+
+   /** META_BLEND */
+   GLbitfield BlendEnabled;
+   GLboolean ColorLogicOpEnabled;
+
+   /** META_COLOR_MASK */
+   GLubyte ColorMask[MAX_DRAW_BUFFERS][4];
+
+   /** META_DEPTH_TEST */
+   struct gl_depthbuffer_attrib Depth;
+
+   /** META_FOG */
+   GLboolean Fog;
+
+   /** META_PIXEL_STORE */
+   struct gl_pixelstore_attrib Pack, Unpack;
+
+   /** META_PIXEL_TRANSFER */
+   GLfloat RedBias, RedScale;
+   GLfloat GreenBias, GreenScale;
+   GLfloat BlueBias, BlueScale;
+   GLfloat AlphaBias, AlphaScale;
+   GLfloat DepthBias, DepthScale;
+   GLboolean MapColorFlag;
+
+   /** META_RASTERIZATION */
+   GLenum FrontPolygonMode, BackPolygonMode;
+   GLboolean PolygonOffset;
+   GLboolean PolygonSmooth;
+   GLboolean PolygonStipple;
+   GLboolean PolygonCull;
+
+   /** META_SCISSOR */
+   struct gl_scissor_attrib Scissor;
+
+   /** META_SHADER */
+   GLboolean VertexProgramEnabled;
+   struct gl_vertex_program *VertexProgram;
+   GLboolean FragmentProgramEnabled;
+   struct gl_fragment_program *FragmentProgram;
+   struct gl_shader_program *VertexShader;
+   struct gl_shader_program *GeometryShader;
+   struct gl_shader_program *FragmentShader;
+   struct gl_shader_program *ActiveShader;
+
+   /** META_STENCIL_TEST */
+   struct gl_stencil_attrib Stencil;
+
+   /** META_TRANSFORM */
+   GLenum MatrixMode;
+   GLfloat ModelviewMatrix[16];
+   GLfloat ProjectionMatrix[16];
+   GLfloat TextureMatrix[16];
+   GLbitfield ClipPlanesEnabled;
+
+   /** META_TEXTURE */
+   GLuint ActiveUnit;
+   GLuint ClientActiveUnit;
+   /** for unit[0] only */
+   struct gl_texture_object *CurrentTexture[NUM_TEXTURE_TARGETS];
+   /** mask of TEXTURE_2D_BIT, etc */
+   GLbitfield TexEnabled[MAX_TEXTURE_UNITS];
+   GLbitfield TexGenEnabled[MAX_TEXTURE_UNITS];
+   GLuint EnvMode;  /* unit[0] only */
+
+   /** META_VERTEX */
+   struct gl_array_object *ArrayObj;
+   struct gl_buffer_object *ArrayBufferObj;
+
+   /** META_VIEWPORT */
+   GLint ViewportX, ViewportY, ViewportW, ViewportH;
+   GLclampd DepthNear, DepthFar;
+
+   /** Miscellaneous (always disabled) */
+   GLboolean Lighting;
+};
+
+
+/**
+ * Temporary texture used for glBlitFramebuffer, glDrawPixels, etc.
+ * This is currently shared by all the meta ops.  But we could create a
+ * separate one for each of glDrawPixel, glBlitFramebuffer, glCopyPixels, etc.
+ */
+struct temp_texture
+{
+   GLuint TexObj;
+   GLenum Target;         /**< GL_TEXTURE_2D or GL_TEXTURE_RECTANGLE */
+   GLsizei MinSize;       /**< Min texture size to allocate */
+   GLsizei MaxSize;       /**< Max possible texture size */
+   GLboolean NPOT;        /**< Non-power of two size OK? */
+   GLsizei Width, Height; /**< Current texture size */
+   GLenum IntFormat;
+   GLfloat Sright, Ttop;  /**< right, top texcoords */
+};
+
+
+/**
+ * State for glBlitFramebufer()
+ */
+struct blit_state
+{
+   GLuint ArrayObj;
+   GLuint VBO;
+   GLuint DepthFP;
+};
+
+
+/**
+ * State for glClear()
+ */
+struct clear_state
+{
+   GLuint ArrayObj;
+   GLuint VBO;
+};
+
+
+/**
+ * State for glCopyPixels()
+ */
+struct copypix_state
+{
+   GLuint ArrayObj;
+   GLuint VBO;
+};
+
+
+/**
+ * State for glDrawPixels()
+ */
+struct drawpix_state
+{
+   GLuint ArrayObj;
+
+   GLuint StencilFP;  /**< Fragment program for drawing stencil images */
+   GLuint DepthFP;  /**< Fragment program for drawing depth images */
+};
+
+
+/**
+ * State for glBitmap()
+ */
+struct bitmap_state
+{
+   GLuint ArrayObj;
+   GLuint VBO;
+   struct temp_texture Tex;  /**< separate texture from other meta ops */
+};
+
+
+/**
+ * State for _mesa_meta_generate_mipmap()
+ */
+struct gen_mipmap_state
+{
+   GLuint ArrayObj;
+   GLuint VBO;
+   GLuint FBO;
+};
+
+#define MAX_META_OPS_DEPTH      2
+/**
+ * All per-context meta state.
+ */
+struct gl_meta_state
+{
+   /** Stack of state saved during meta-ops */
+   struct save_state Save[MAX_META_OPS_DEPTH];
+   /** Save stack depth */
+   GLuint SaveStackDepth;
+
+   struct temp_texture TempTex;
+
+   struct blit_state Blit;    /**< For _mesa_meta_BlitFramebuffer() */
+   struct clear_state Clear;  /**< For _mesa_meta_Clear() */
+   struct copypix_state CopyPix;  /**< For _mesa_meta_CopyPixels() */
+   struct drawpix_state DrawPix;  /**< For _mesa_meta_DrawPixels() */
+   struct bitmap_state Bitmap;    /**< For _mesa_meta_Bitmap() */
+   struct gen_mipmap_state Mipmap;    /**< For _mesa_meta_GenerateMipmap() */
+};
+
+
+/**
+ * Initialize meta-ops for a context.
+ * To be called once during context creation.
+ */
+void
+_mesa_meta_init(struct gl_context *ctx)
+{
+   ASSERT(!ctx->Meta);
+
+   ctx->Meta = CALLOC_STRUCT(gl_meta_state);
+}
+
+
+/**
+ * Free context meta-op state.
+ * To be called once during context destruction.
+ */
+void
+_mesa_meta_free(struct gl_context *ctx)
+{
+   /* Note: Any textures, VBOs, etc, that we allocate should get
+    * freed by the normal context destruction code.  But this would be
+    * the place to free other meta data someday.
+    */
+   free(ctx->Meta);
+   ctx->Meta = NULL;
+}
+
+
+/**
+ * Enter meta state.  This is like a light-weight version of glPushAttrib
+ * but it also resets most GL state back to default values.
+ *
+ * \param state  bitmask of META_* flags indicating which attribute groups
+ *               to save and reset to their defaults
+ */
+static void
+_mesa_meta_begin(struct gl_context *ctx, GLbitfield state)
+{
+   struct save_state *save;
+
+   /* hope MAX_META_OPS_DEPTH is large enough */
+   assert(ctx->Meta->SaveStackDepth < MAX_META_OPS_DEPTH);
+
+   save = &ctx->Meta->Save[ctx->Meta->SaveStackDepth++];
+   memset(save, 0, sizeof(*save));
+   save->SavedState = state;
+
+   if (state & META_ALPHA_TEST) {
+      save->AlphaEnabled = ctx->Color.AlphaEnabled;
+      save->AlphaFunc = ctx->Color.AlphaFunc;
+      save->AlphaRef = ctx->Color.AlphaRef;
+      if (ctx->Color.AlphaEnabled)
+         _mesa_set_enable(ctx, GL_ALPHA_TEST, GL_FALSE);
+   }
+
+   if (state & META_BLEND) {
+      save->BlendEnabled = ctx->Color.BlendEnabled;
+      if (ctx->Color.BlendEnabled) {
+         if (ctx->Extensions.EXT_draw_buffers2) {
+            GLuint i;
+            for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
+               _mesa_set_enablei(ctx, GL_BLEND, i, GL_FALSE);
+            }
+         }
+         else {
+            _mesa_set_enable(ctx, GL_BLEND, GL_FALSE);
+         }
+      }
+      save->ColorLogicOpEnabled = ctx->Color.ColorLogicOpEnabled;
+      if (ctx->Color.ColorLogicOpEnabled)
+         _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP, GL_FALSE);
+   }
+
+   if (state & META_COLOR_MASK) {
+      memcpy(save->ColorMask, ctx->Color.ColorMask,
+             sizeof(ctx->Color.ColorMask));
+      if (!ctx->Color.ColorMask[0][0] ||
+          !ctx->Color.ColorMask[0][1] ||
+          !ctx->Color.ColorMask[0][2] ||
+          !ctx->Color.ColorMask[0][3])
+         _mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+   }
+
+   if (state & META_DEPTH_TEST) {
+      save->Depth = ctx->Depth; /* struct copy */
+      if (ctx->Depth.Test)
+         _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_FALSE);
+   }
+
+   if (state & META_FOG) {
+      save->Fog = ctx->Fog.Enabled;
+      if (ctx->Fog.Enabled)
+         _mesa_set_enable(ctx, GL_FOG, GL_FALSE);
+   }
+
+   if (state & META_PIXEL_STORE) {
+      save->Pack = ctx->Pack;
+      save->Unpack = ctx->Unpack;
+      ctx->Pack = ctx->DefaultPacking;
+      ctx->Unpack = ctx->DefaultPacking;
+   }
+
+   if (state & META_PIXEL_TRANSFER) {
+      save->RedScale = ctx->Pixel.RedScale;
+      save->RedBias = ctx->Pixel.RedBias;
+      save->GreenScale = ctx->Pixel.GreenScale;
+      save->GreenBias = ctx->Pixel.GreenBias;
+      save->BlueScale = ctx->Pixel.BlueScale;
+      save->BlueBias = ctx->Pixel.BlueBias;
+      save->AlphaScale = ctx->Pixel.AlphaScale;
+      save->AlphaBias = ctx->Pixel.AlphaBias;
+      save->MapColorFlag = ctx->Pixel.MapColorFlag;
+      ctx->Pixel.RedScale = 1.0F;
+      ctx->Pixel.RedBias = 0.0F;
+      ctx->Pixel.GreenScale = 1.0F;
+      ctx->Pixel.GreenBias = 0.0F;
+      ctx->Pixel.BlueScale = 1.0F;
+      ctx->Pixel.BlueBias = 0.0F;
+      ctx->Pixel.AlphaScale = 1.0F;
+      ctx->Pixel.AlphaBias = 0.0F;
+      ctx->Pixel.MapColorFlag = GL_FALSE;
+      /* XXX more state */
+      ctx->NewState |=_NEW_PIXEL;
+   }
+
+   if (state & META_RASTERIZATION) {
+      save->FrontPolygonMode = ctx->Polygon.FrontMode;
+      save->BackPolygonMode = ctx->Polygon.BackMode;
+      save->PolygonOffset = ctx->Polygon.OffsetFill;
+      save->PolygonSmooth = ctx->Polygon.SmoothFlag;
+      save->PolygonStipple = ctx->Polygon.StippleFlag;
+      save->PolygonCull = ctx->Polygon.CullFlag;
+      _mesa_PolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+      _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL, GL_FALSE);
+      _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, GL_FALSE);
+      _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, GL_FALSE);
+      _mesa_set_enable(ctx, GL_CULL_FACE, GL_FALSE);
+   }
+
+   if (state & META_SCISSOR) {
+      save->Scissor = ctx->Scissor; /* struct copy */
+      _mesa_set_enable(ctx, GL_SCISSOR_TEST, GL_FALSE);
+   }
+
+   if (state & META_SHADER) {
+      if (ctx->Extensions.ARB_vertex_program) {
+         save->VertexProgramEnabled = ctx->VertexProgram.Enabled;
+         _mesa_reference_vertprog(ctx, &save->VertexProgram,
+				  ctx->VertexProgram.Current);
+         _mesa_set_enable(ctx, GL_VERTEX_PROGRAM_ARB, GL_FALSE);
+      }
+
+      if (ctx->Extensions.ARB_fragment_program) {
+         save->FragmentProgramEnabled = ctx->FragmentProgram.Enabled;
+         _mesa_reference_fragprog(ctx, &save->FragmentProgram,
+				  ctx->FragmentProgram.Current);
+         _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_FALSE);
+      }
+
+      if (ctx->Extensions.ARB_shader_objects) {
+	 _mesa_reference_shader_program(ctx, &save->VertexShader,
+					ctx->Shader.CurrentVertexProgram);
+	 _mesa_reference_shader_program(ctx, &save->GeometryShader,
+					ctx->Shader.CurrentGeometryProgram);
+	 _mesa_reference_shader_program(ctx, &save->FragmentShader,
+					ctx->Shader.CurrentFragmentProgram);
+	 _mesa_reference_shader_program(ctx, &save->ActiveShader,
+					ctx->Shader.CurrentFragmentProgram);
+
+         _mesa_UseProgramObjectARB(0);
+      }
+   }
+
+   if (state & META_STENCIL_TEST) {
+      save->Stencil = ctx->Stencil; /* struct copy */
+      if (ctx->Stencil.Enabled)
+         _mesa_set_enable(ctx, GL_STENCIL_TEST, GL_FALSE);
+      /* NOTE: other stencil state not reset */
+   }
+
+   if (state & META_TEXTURE) {
+      GLuint u, tgt;
+
+      save->ActiveUnit = ctx->Texture.CurrentUnit;
+      save->ClientActiveUnit = ctx->Array.ActiveTexture;
+      save->EnvMode = ctx->Texture.Unit[0].EnvMode;
+
+      /* Disable all texture units */
+      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+         save->TexEnabled[u] = ctx->Texture.Unit[u].Enabled;
+         save->TexGenEnabled[u] = ctx->Texture.Unit[u].TexGenEnabled;
+         if (ctx->Texture.Unit[u].Enabled ||
+             ctx->Texture.Unit[u].TexGenEnabled) {
+            _mesa_ActiveTextureARB(GL_TEXTURE0 + u);
+            _mesa_set_enable(ctx, GL_TEXTURE_1D, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_2D, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_3D, GL_FALSE);
+            if (ctx->Extensions.ARB_texture_cube_map)
+               _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_GEN_S, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_GEN_T, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_GEN_R, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
+         }
+      }
+
+      /* save current texture objects for unit[0] only */
+      for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
+         _mesa_reference_texobj(&save->CurrentTexture[tgt],
+                                ctx->Texture.Unit[0].CurrentTex[tgt]);
+      }
+
+      /* set defaults for unit[0] */
+      _mesa_ActiveTextureARB(GL_TEXTURE0);
+      _mesa_ClientActiveTextureARB(GL_TEXTURE0);
+      _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+   }
+
+   if (state & META_TRANSFORM) {
+      GLuint activeTexture = ctx->Texture.CurrentUnit;
+      memcpy(save->ModelviewMatrix, ctx->ModelviewMatrixStack.Top->m,
+             16 * sizeof(GLfloat));
+      memcpy(save->ProjectionMatrix, ctx->ProjectionMatrixStack.Top->m,
+             16 * sizeof(GLfloat));
+      memcpy(save->TextureMatrix, ctx->TextureMatrixStack[0].Top->m,
+             16 * sizeof(GLfloat));
+      save->MatrixMode = ctx->Transform.MatrixMode;
+      /* set 1:1 vertex:pixel coordinate transform */
+      _mesa_ActiveTextureARB(GL_TEXTURE0);
+      _mesa_MatrixMode(GL_TEXTURE);
+      _mesa_LoadIdentity();
+      _mesa_ActiveTextureARB(GL_TEXTURE0 + activeTexture);
+      _mesa_MatrixMode(GL_MODELVIEW);
+      _mesa_LoadIdentity();
+      _mesa_MatrixMode(GL_PROJECTION);
+      _mesa_LoadIdentity();
+      _mesa_Ortho(0.0, ctx->DrawBuffer->Width,
+                  0.0, ctx->DrawBuffer->Height,
+                  -1.0, 1.0);
+      save->ClipPlanesEnabled = ctx->Transform.ClipPlanesEnabled;
+      if (ctx->Transform.ClipPlanesEnabled) {
+         GLuint i;
+         for (i = 0; i < ctx->Const.MaxClipPlanes; i++) {
+            _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
+         }
+      }
+   }
+
+   if (state & META_VERTEX) {
+      /* save vertex array object state */
+      _mesa_reference_array_object(ctx, &save->ArrayObj,
+                                   ctx->Array.ArrayObj);
+      _mesa_reference_buffer_object(ctx, &save->ArrayBufferObj,
+                                    ctx->Array.ArrayBufferObj);
+      /* set some default state? */
+   }
+
+   if (state & META_VIEWPORT) {
+      /* save viewport state */
+      save->ViewportX = ctx->Viewport.X;
+      save->ViewportY = ctx->Viewport.Y;
+      save->ViewportW = ctx->Viewport.Width;
+      save->ViewportH = ctx->Viewport.Height;
+      /* set viewport to match window size */
+      if (ctx->Viewport.X != 0 ||
+          ctx->Viewport.Y != 0 ||
+          ctx->Viewport.Width != ctx->DrawBuffer->Width ||
+          ctx->Viewport.Height != ctx->DrawBuffer->Height) {
+         _mesa_set_viewport(ctx, 0, 0,
+                            ctx->DrawBuffer->Width, ctx->DrawBuffer->Height);
+      }
+      /* save depth range state */
+      save->DepthNear = ctx->Viewport.Near;
+      save->DepthFar = ctx->Viewport.Far;
+      /* set depth range to default */
+      _mesa_DepthRange(0.0, 1.0);
+   }
+
+   /* misc */
+   {
+      save->Lighting = ctx->Light.Enabled;
+      if (ctx->Light.Enabled)
+         _mesa_set_enable(ctx, GL_LIGHTING, GL_FALSE);
+   }
+}
+
+
+/**
+ * Leave meta state.  This is like a light-weight version of glPopAttrib().
+ */
+static void
+_mesa_meta_end(struct gl_context *ctx)
+{
+   struct save_state *save = &ctx->Meta->Save[--ctx->Meta->SaveStackDepth];
+   const GLbitfield state = save->SavedState;
+
+   if (state & META_ALPHA_TEST) {
+      if (ctx->Color.AlphaEnabled != save->AlphaEnabled)
+         _mesa_set_enable(ctx, GL_ALPHA_TEST, save->AlphaEnabled);
+      _mesa_AlphaFunc(save->AlphaFunc, save->AlphaRef);
+   }
+
+   if (state & META_BLEND) {
+      if (ctx->Color.BlendEnabled != save->BlendEnabled) {
+         if (ctx->Extensions.EXT_draw_buffers2) {
+            GLuint i;
+            for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
+               _mesa_set_enablei(ctx, GL_BLEND, i, (save->BlendEnabled >> i) & 1);
+            }
+         }
+         else {
+            _mesa_set_enable(ctx, GL_BLEND, (save->BlendEnabled & 1));
+         }
+      }
+      if (ctx->Color.ColorLogicOpEnabled != save->ColorLogicOpEnabled)
+         _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP, save->ColorLogicOpEnabled);
+   }
+
+   if (state & META_COLOR_MASK) {
+      GLuint i;
+      for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
+         if (!TEST_EQ_4V(ctx->Color.ColorMask[i], save->ColorMask[i])) {
+            if (i == 0) {
+               _mesa_ColorMask(save->ColorMask[i][0], save->ColorMask[i][1],
+                               save->ColorMask[i][2], save->ColorMask[i][3]);
+            }
+            else {
+               _mesa_ColorMaskIndexed(i,
+                                      save->ColorMask[i][0],
+                                      save->ColorMask[i][1],
+                                      save->ColorMask[i][2],
+                                      save->ColorMask[i][3]);
+            }
+         }
+      }
+   }
+
+   if (state & META_DEPTH_TEST) {
+      if (ctx->Depth.Test != save->Depth.Test)
+         _mesa_set_enable(ctx, GL_DEPTH_TEST, save->Depth.Test);
+      _mesa_DepthFunc(save->Depth.Func);
+      _mesa_DepthMask(save->Depth.Mask);
+   }
+
+   if (state & META_FOG) {
+      _mesa_set_enable(ctx, GL_FOG, save->Fog);
+   }
+
+   if (state & META_PIXEL_STORE) {
+      ctx->Pack = save->Pack;
+      ctx->Unpack = save->Unpack;
+   }
+
+   if (state & META_PIXEL_TRANSFER) {
+      ctx->Pixel.RedScale = save->RedScale;
+      ctx->Pixel.RedBias = save->RedBias;
+      ctx->Pixel.GreenScale = save->GreenScale;
+      ctx->Pixel.GreenBias = save->GreenBias;
+      ctx->Pixel.BlueScale = save->BlueScale;
+      ctx->Pixel.BlueBias = save->BlueBias;
+      ctx->Pixel.AlphaScale = save->AlphaScale;
+      ctx->Pixel.AlphaBias = save->AlphaBias;
+      ctx->Pixel.MapColorFlag = save->MapColorFlag;
+      /* XXX more state */
+      ctx->NewState |=_NEW_PIXEL;
+   }
+
+   if (state & META_RASTERIZATION) {
+      _mesa_PolygonMode(GL_FRONT, save->FrontPolygonMode);
+      _mesa_PolygonMode(GL_BACK, save->BackPolygonMode);
+      _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, save->PolygonStipple);
+      _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL, save->PolygonOffset);
+      _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, save->PolygonSmooth);
+      _mesa_set_enable(ctx, GL_CULL_FACE, save->PolygonCull);
+   }
+
+   if (state & META_SCISSOR) {
+      _mesa_set_enable(ctx, GL_SCISSOR_TEST, save->Scissor.Enabled);
+      _mesa_Scissor(save->Scissor.X, save->Scissor.Y,
+                    save->Scissor.Width, save->Scissor.Height);
+   }
+
+   if (state & META_SHADER) {
+      if (ctx->Extensions.ARB_vertex_program) {
+         _mesa_set_enable(ctx, GL_VERTEX_PROGRAM_ARB,
+                          save->VertexProgramEnabled);
+         _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current, 
+                                  save->VertexProgram);
+	 _mesa_reference_vertprog(ctx, &save->VertexProgram, NULL);
+      }
+
+      if (ctx->Extensions.ARB_fragment_program) {
+         _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB,
+                          save->FragmentProgramEnabled);
+         _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,
+                                  save->FragmentProgram);
+	 _mesa_reference_fragprog(ctx, &save->FragmentProgram, NULL);
+      }
+
+      if (ctx->Extensions.ARB_vertex_shader)
+	 _mesa_use_shader_program(ctx, GL_VERTEX_SHADER, save->VertexShader);
+
+      if (ctx->Extensions.ARB_geometry_shader4)
+	 _mesa_use_shader_program(ctx, GL_GEOMETRY_SHADER_ARB,
+				  save->GeometryShader);
+
+      if (ctx->Extensions.ARB_fragment_shader)
+	 _mesa_use_shader_program(ctx, GL_FRAGMENT_SHADER,
+				  save->FragmentShader);
+
+      _mesa_reference_shader_program(ctx, &ctx->Shader.ActiveProgram,
+				     save->ActiveShader);
+   }
+
+   if (state & META_STENCIL_TEST) {
+      const struct gl_stencil_attrib *stencil = &save->Stencil;
+
+      _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
+      _mesa_ClearStencil(stencil->Clear);
+      if (ctx->Extensions.EXT_stencil_two_side) {
+         _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,
+                          stencil->TestTwoSide);
+         _mesa_ActiveStencilFaceEXT(stencil->ActiveFace
+                                    ? GL_BACK : GL_FRONT);
+      }
+      /* front state */
+      _mesa_StencilFuncSeparate(GL_FRONT,
+                                stencil->Function[0],
+                                stencil->Ref[0],
+                                stencil->ValueMask[0]);
+      _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);
+      _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],
+                              stencil->ZFailFunc[0],
+                              stencil->ZPassFunc[0]);
+      /* back state */
+      _mesa_StencilFuncSeparate(GL_BACK,
+                                stencil->Function[1],
+                                stencil->Ref[1],
+                                stencil->ValueMask[1]);
+      _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);
+      _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],
+                              stencil->ZFailFunc[1],
+                              stencil->ZPassFunc[1]);
+   }
+
+   if (state & META_TEXTURE) {
+      GLuint u, tgt;
+
+      ASSERT(ctx->Texture.CurrentUnit == 0);
+
+      /* restore texenv for unit[0] */
+      _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, save->EnvMode);
+
+      /* restore texture objects for unit[0] only */
+      for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
+         _mesa_reference_texobj(&ctx->Texture.Unit[0].CurrentTex[tgt],
+                                save->CurrentTexture[tgt]);
+         _mesa_reference_texobj(&save->CurrentTexture[tgt], NULL);
+      }
+
+      /* Re-enable textures, texgen */
+      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+         if (save->TexEnabled[u]) {
+            _mesa_ActiveTextureARB(GL_TEXTURE0 + u);
+
+            if (save->TexEnabled[u] & TEXTURE_1D_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_1D, GL_TRUE);
+            if (save->TexEnabled[u] & TEXTURE_2D_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_2D, GL_TRUE);
+            if (save->TexEnabled[u] & TEXTURE_3D_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_3D, GL_TRUE);
+            if (save->TexEnabled[u] & TEXTURE_CUBE_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP, GL_TRUE);
+            if (save->TexEnabled[u] & TEXTURE_RECT_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE, GL_TRUE);
+         }
+
+         if (save->TexGenEnabled[u]) {
+            _mesa_ActiveTextureARB(GL_TEXTURE0 + u);
+
+            if (save->TexGenEnabled[u] & S_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_GEN_S, GL_TRUE);
+            if (save->TexGenEnabled[u] & T_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_GEN_T, GL_TRUE);
+            if (save->TexGenEnabled[u] & R_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_GEN_R, GL_TRUE);
+            if (save->TexGenEnabled[u] & Q_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
+         }
+      }
+
+      /* restore current unit state */
+      _mesa_ActiveTextureARB(GL_TEXTURE0 + save->ActiveUnit);
+      _mesa_ClientActiveTextureARB(GL_TEXTURE0 + save->ClientActiveUnit);
+   }
+
+   if (state & META_TRANSFORM) {
+      GLuint activeTexture = ctx->Texture.CurrentUnit;
+      _mesa_ActiveTextureARB(GL_TEXTURE0);
+      _mesa_MatrixMode(GL_TEXTURE);
+      _mesa_LoadMatrixf(save->TextureMatrix);
+      _mesa_ActiveTextureARB(GL_TEXTURE0 + activeTexture);
+
+      _mesa_MatrixMode(GL_MODELVIEW);
+      _mesa_LoadMatrixf(save->ModelviewMatrix);
+
+      _mesa_MatrixMode(GL_PROJECTION);
+      _mesa_LoadMatrixf(save->ProjectionMatrix);
+
+      _mesa_MatrixMode(save->MatrixMode);
+
+      if (save->ClipPlanesEnabled) {
+         GLuint i;
+         for (i = 0; i < ctx->Const.MaxClipPlanes; i++) {
+            if (save->ClipPlanesEnabled & (1 << i)) {
+               _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
+            }
+         }
+      }
+   }
+
+   if (state & META_VERTEX) {
+      /* restore vertex buffer object */
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, save->ArrayBufferObj->Name);
+      _mesa_reference_buffer_object(ctx, &save->ArrayBufferObj, NULL);
+
+      /* restore vertex array object */
+      _mesa_BindVertexArray(save->ArrayObj->Name);
+      _mesa_reference_array_object(ctx, &save->ArrayObj, NULL);
+   }
+
+   if (state & META_VIEWPORT) {
+      if (save->ViewportX != ctx->Viewport.X ||
+          save->ViewportY != ctx->Viewport.Y ||
+          save->ViewportW != ctx->Viewport.Width ||
+          save->ViewportH != ctx->Viewport.Height) {
+         _mesa_set_viewport(ctx, save->ViewportX, save->ViewportY,
+                            save->ViewportW, save->ViewportH);
+      }
+      _mesa_DepthRange(save->DepthNear, save->DepthFar);
+   }
+
+   /* misc */
+   if (save->Lighting) {
+      _mesa_set_enable(ctx, GL_LIGHTING, GL_TRUE);
+   }
+}
+
+
+/**
+ * Convert Z from a normalized value in the range [0, 1] to an object-space
+ * Z coordinate in [-1, +1] so that drawing at the new Z position with the
+ * default/identity ortho projection results in the original Z value.
+ * Used by the meta-Clear, Draw/CopyPixels and Bitmap functions where the Z
+ * value comes from the clear value or raster position.
+ */
+static INLINE GLfloat
+invert_z(GLfloat normZ)
+{
+   GLfloat objZ = 1.0 - 2.0 * normZ;
+   return objZ;
+}
+
+
+/**
+ * One-time init for a temp_texture object.
+ * Choose tex target, compute max tex size, etc.
+ */
+static void
+init_temp_texture(struct gl_context *ctx, struct temp_texture *tex)
+{
+   /* prefer texture rectangle */
+   if (ctx->Extensions.NV_texture_rectangle) {
+      tex->Target = GL_TEXTURE_RECTANGLE;
+      tex->MaxSize = ctx->Const.MaxTextureRectSize;
+      tex->NPOT = GL_TRUE;
+   }
+   else {
+      /* use 2D texture, NPOT if possible */
+      tex->Target = GL_TEXTURE_2D;
+      tex->MaxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
+      tex->NPOT = ctx->Extensions.ARB_texture_non_power_of_two;
+   }
+   tex->MinSize = 16;  /* 16 x 16 at least */
+   assert(tex->MaxSize > 0);
+
+   _mesa_GenTextures(1, &tex->TexObj);
+}
+
+
+/**
+ * Return pointer to temp_texture info for non-bitmap ops.
+ * This does some one-time init if needed.
+ */
+static struct temp_texture *
+get_temp_texture(struct gl_context *ctx)
+{
+   struct temp_texture *tex = &ctx->Meta->TempTex;
+
+   if (!tex->TexObj) {
+      init_temp_texture(ctx, tex);
+   }
+
+   return tex;
+}
+
+
+/**
+ * Return pointer to temp_texture info for _mesa_meta_bitmap().
+ * We use a separate texture for bitmaps to reduce texture
+ * allocation/deallocation.
+ */
+static struct temp_texture *
+get_bitmap_temp_texture(struct gl_context *ctx)
+{
+   struct temp_texture *tex = &ctx->Meta->Bitmap.Tex;
+
+   if (!tex->TexObj) {
+      init_temp_texture(ctx, tex);
+   }
+
+   return tex;
+}
+
+
+/**
+ * Compute the width/height of texture needed to draw an image of the
+ * given size.  Return a flag indicating whether the current texture
+ * can be re-used (glTexSubImage2D) or if a new texture needs to be
+ * allocated (glTexImage2D).
+ * Also, compute s/t texcoords for drawing.
+ *
+ * \return GL_TRUE if new texture is needed, GL_FALSE otherwise
+ */
+static GLboolean
+alloc_texture(struct temp_texture *tex,
+              GLsizei width, GLsizei height, GLenum intFormat)
+{
+   GLboolean newTex = GL_FALSE;
+
+   ASSERT(width <= tex->MaxSize);
+   ASSERT(height <= tex->MaxSize);
+
+   if (width > tex->Width ||
+       height > tex->Height ||
+       intFormat != tex->IntFormat) {
+      /* alloc new texture (larger or different format) */
+
+      if (tex->NPOT) {
+         /* use non-power of two size */
+         tex->Width = MAX2(tex->MinSize, width);
+         tex->Height = MAX2(tex->MinSize, height);
+      }
+      else {
+         /* find power of two size */
+         GLsizei w, h;
+         w = h = tex->MinSize;
+         while (w < width)
+            w *= 2;
+         while (h < height)
+            h *= 2;
+         tex->Width = w;
+         tex->Height = h;
+      }
+
+      tex->IntFormat = intFormat;
+
+      newTex = GL_TRUE;
+   }
+
+   /* compute texcoords */
+   if (tex->Target == GL_TEXTURE_RECTANGLE) {
+      tex->Sright = (GLfloat) width;
+      tex->Ttop = (GLfloat) height;
+   }
+   else {
+      tex->Sright = (GLfloat) width / tex->Width;
+      tex->Ttop = (GLfloat) height / tex->Height;
+   }
+
+   return newTex;
+}
+
+
+/**
+ * Setup/load texture for glCopyPixels or glBlitFramebuffer.
+ */
+static void
+setup_copypix_texture(struct temp_texture *tex,
+                      GLboolean newTex,
+                      GLint srcX, GLint srcY,
+                      GLsizei width, GLsizei height, GLenum intFormat,
+                      GLenum filter)
+{
+   _mesa_BindTexture(tex->Target, tex->TexObj);
+   _mesa_TexParameteri(tex->Target, GL_TEXTURE_MIN_FILTER, filter);
+   _mesa_TexParameteri(tex->Target, GL_TEXTURE_MAG_FILTER, filter);
+   _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+   /* copy framebuffer image to texture */
+   if (newTex) {
+      /* create new tex image */
+      if (tex->Width == width && tex->Height == height) {
+         /* create new tex with framebuffer data */
+         _mesa_CopyTexImage2D(tex->Target, 0, tex->IntFormat,
+                              srcX, srcY, width, height, 0);
+      }
+      else {
+         /* create empty texture */
+         _mesa_TexImage2D(tex->Target, 0, tex->IntFormat,
+                          tex->Width, tex->Height, 0,
+                          intFormat, GL_UNSIGNED_BYTE, NULL);
+         /* load image */
+         _mesa_CopyTexSubImage2D(tex->Target, 0,
+                                 0, 0, srcX, srcY, width, height);
+      }
+   }
+   else {
+      /* replace existing tex image */
+      _mesa_CopyTexSubImage2D(tex->Target, 0,
+                              0, 0, srcX, srcY, width, height);
+   }
+}
+
+
+/**
+ * Setup/load texture for glDrawPixels.
+ */
+static void
+setup_drawpix_texture(struct gl_context *ctx,
+		      struct temp_texture *tex,
+                      GLboolean newTex,
+                      GLenum texIntFormat,
+                      GLsizei width, GLsizei height,
+                      GLenum format, GLenum type,
+                      const GLvoid *pixels)
+{
+   _mesa_BindTexture(tex->Target, tex->TexObj);
+   _mesa_TexParameteri(tex->Target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+   _mesa_TexParameteri(tex->Target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+   _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+   /* copy pixel data to texture */
+   if (newTex) {
+      /* create new tex image */
+      if (tex->Width == width && tex->Height == height) {
+         /* create new tex and load image data */
+         _mesa_TexImage2D(tex->Target, 0, tex->IntFormat,
+                          tex->Width, tex->Height, 0, format, type, pixels);
+      }
+      else {
+	 struct gl_buffer_object *save_unpack_obj = NULL;
+
+	 _mesa_reference_buffer_object(ctx, &save_unpack_obj,
+				       ctx->Unpack.BufferObj);
+	 _mesa_BindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
+         /* create empty texture */
+         _mesa_TexImage2D(tex->Target, 0, tex->IntFormat,
+                          tex->Width, tex->Height, 0, format, type, NULL);
+	 if (save_unpack_obj != NULL)
+	    _mesa_BindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB,
+				save_unpack_obj->Name);
+         /* load image */
+         _mesa_TexSubImage2D(tex->Target, 0,
+                             0, 0, width, height, format, type, pixels);
+      }
+   }
+   else {
+      /* replace existing tex image */
+      _mesa_TexSubImage2D(tex->Target, 0,
+                          0, 0, width, height, format, type, pixels);
+   }
+}
+
+
+
+/**
+ * One-time init for drawing depth pixels.
+ */
+static void
+init_blit_depth_pixels(struct gl_context *ctx)
+{
+   static const char *program =
+      "!!ARBfp1.0\n"
+      "TEX result.depth, fragment.texcoord[0], texture[0], %s; \n"
+      "END \n";
+   char program2[200];
+   struct blit_state *blit = &ctx->Meta->Blit;
+   struct temp_texture *tex = get_temp_texture(ctx);
+   const char *texTarget;
+
+   assert(blit->DepthFP == 0);
+
+   /* replace %s with "RECT" or "2D" */
+   assert(strlen(program) + 4 < sizeof(program2));
+   if (tex->Target == GL_TEXTURE_RECTANGLE)
+      texTarget = "RECT";
+   else
+      texTarget = "2D";
+   _mesa_snprintf(program2, sizeof(program2), program, texTarget);
+
+   _mesa_GenPrograms(1, &blit->DepthFP);
+   _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP);
+   _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+                          strlen(program2), (const GLubyte *) program2);
+}
+
+
+/**
+ * Try to do a glBlitFramebuffer using no-copy texturing.
+ * We can do this when the src renderbuffer is actually a texture.
+ * But if the src buffer == dst buffer we cannot do this.
+ *
+ * \return new buffer mask indicating the buffers left to blit using the
+ *         normal path.
+ */
+static GLbitfield
+blitframebuffer_texture(struct gl_context *ctx,
+                        GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                        GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                        GLbitfield mask, GLenum filter)
+{
+   if (mask & GL_COLOR_BUFFER_BIT) {
+      const struct gl_framebuffer *drawFb = ctx->DrawBuffer;
+      const struct gl_framebuffer *readFb = ctx->ReadBuffer;
+      const struct gl_renderbuffer_attachment *drawAtt =
+         &drawFb->Attachment[drawFb->_ColorDrawBufferIndexes[0]];
+      const struct gl_renderbuffer_attachment *readAtt =
+         &readFb->Attachment[readFb->_ColorReadBufferIndex];
+
+      if (readAtt && readAtt->Texture) {
+         const struct gl_texture_object *texObj = readAtt->Texture;
+         const GLuint srcLevel = readAtt->TextureLevel;
+         const GLenum minFilterSave = texObj->MinFilter;
+         const GLenum magFilterSave = texObj->MagFilter;
+         const GLint baseLevelSave = texObj->BaseLevel;
+         const GLint maxLevelSave = texObj->MaxLevel;
+         const GLenum wrapSSave = texObj->WrapS;
+         const GLenum wrapTSave = texObj->WrapT;
+         const GLenum target = texObj->Target;
+
+         if (drawAtt->Texture == readAtt->Texture) {
+            /* Can't use same texture as both the source and dest.  We need
+             * to handle overlapping blits and besides, some hw may not
+             * support this.
+             */
+            return mask;
+         }
+
+         if (target != GL_TEXTURE_2D && target != GL_TEXTURE_RECTANGLE_ARB) {
+            /* Can't handle other texture types at this time */
+            return mask;
+         }
+
+         /*
+         printf("Blit from texture!\n");
+         printf("  srcAtt %p  dstAtt %p\n", readAtt, drawAtt);
+         printf("  srcTex %p  dstText %p\n", texObj, drawAtt->Texture);
+         */
+
+         /* Prepare src texture state */
+         _mesa_BindTexture(target, texObj->Name);
+         _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, filter);
+         _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, filter);
+         if (target != GL_TEXTURE_RECTANGLE_ARB) {
+            _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, srcLevel);
+            _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, srcLevel);
+         }
+         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+         _mesa_set_enable(ctx, target, GL_TRUE);
+
+         /* Prepare vertex data (the VBO was previously created and bound) */
+         {
+            struct vertex {
+               GLfloat x, y, s, t;
+            };
+            struct vertex verts[4];
+            GLfloat s0, t0, s1, t1;
+
+            if (target == GL_TEXTURE_2D) {
+               const struct gl_texture_image *texImage
+                   = _mesa_select_tex_image(ctx, texObj, target, srcLevel);
+               s0 = srcX0 / (float) texImage->Width;
+               s1 = srcX1 / (float) texImage->Width;
+               t0 = srcY0 / (float) texImage->Height;
+               t1 = srcY1 / (float) texImage->Height;
+            }
+            else {
+               assert(target == GL_TEXTURE_RECTANGLE_ARB);
+               s0 = srcX0;
+               s1 = srcX1;
+               t0 = srcY0;
+               t1 = srcY1;
+            }
+
+            verts[0].x = (GLfloat) dstX0;
+            verts[0].y = (GLfloat) dstY0;
+            verts[1].x = (GLfloat) dstX1;
+            verts[1].y = (GLfloat) dstY0;
+            verts[2].x = (GLfloat) dstX1;
+            verts[2].y = (GLfloat) dstY1;
+            verts[3].x = (GLfloat) dstX0;
+            verts[3].y = (GLfloat) dstY1;
+
+            verts[0].s = s0;
+            verts[0].t = t0;
+            verts[1].s = s1;
+            verts[1].t = t0;
+            verts[2].s = s1;
+            verts[2].t = t1;
+            verts[3].s = s0;
+            verts[3].t = t1;
+
+            _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+         }
+
+         _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+         /* Restore texture object state, the texture binding will
+          * be restored by _mesa_meta_end().
+          */
+         _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, minFilterSave);
+         _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, magFilterSave);
+         if (target != GL_TEXTURE_RECTANGLE_ARB) {
+            _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, baseLevelSave);
+            _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, maxLevelSave);
+         }
+         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, wrapSSave);
+         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, wrapTSave);
+
+         /* Done with color buffer */
+         mask &= ~GL_COLOR_BUFFER_BIT;
+      }
+   }
+
+   return mask;
+}
+
+
+/**
+ * Meta implementation of ctx->Driver.BlitFramebuffer() in terms
+ * of texture mapping and polygon rendering.
+ */
+void
+_mesa_meta_BlitFramebuffer(struct gl_context *ctx,
+                           GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                           GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                           GLbitfield mask, GLenum filter)
+{
+   struct blit_state *blit = &ctx->Meta->Blit;
+   struct temp_texture *tex = get_temp_texture(ctx);
+   const GLsizei maxTexSize = tex->MaxSize;
+   const GLint srcX = MIN2(srcX0, srcX1);
+   const GLint srcY = MIN2(srcY0, srcY1);
+   const GLint srcW = abs(srcX1 - srcX0);
+   const GLint srcH = abs(srcY1 - srcY0);
+   const GLboolean srcFlipX = srcX1 < srcX0;
+   const GLboolean srcFlipY = srcY1 < srcY0;
+   struct vertex {
+      GLfloat x, y, s, t;
+   };
+   struct vertex verts[4];
+   GLboolean newTex;
+
+   if (srcW > maxTexSize || srcH > maxTexSize) {
+      /* XXX avoid this fallback */
+      _swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,
+                              dstX0, dstY0, dstX1, dstY1, mask, filter);
+      return;
+   }
+
+   if (srcFlipX) {
+      GLint tmp = dstX0;
+      dstX0 = dstX1;
+      dstX1 = tmp;
+   }
+
+   if (srcFlipY) {
+      GLint tmp = dstY0;
+      dstY0 = dstY1;
+      dstY1 = tmp;
+   }
+
+   /* only scissor effects blit so save/clear all other relevant state */
+   _mesa_meta_begin(ctx, ~META_SCISSOR);
+
+   if (blit->ArrayObj == 0) {
+      /* one-time setup */
+
+      /* create vertex array object */
+      _mesa_GenVertexArrays(1, &blit->ArrayObj);
+      _mesa_BindVertexArray(blit->ArrayObj);
+
+      /* create vertex array buffer */
+      _mesa_GenBuffersARB(1, &blit->VBO);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, blit->VBO);
+      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+                          NULL, GL_DYNAMIC_DRAW_ARB);
+
+      /* setup vertex arrays */
+      _mesa_VertexPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(x));
+      _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(s));
+      _mesa_EnableClientState(GL_VERTEX_ARRAY);
+      _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
+   }
+   else {
+      _mesa_BindVertexArray(blit->ArrayObj);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, blit->VBO);
+   }
+
+   /* Try faster, direct texture approach first */
+   mask = blitframebuffer_texture(ctx, srcX0, srcY0, srcX1, srcY1,
+                                  dstX0, dstY0, dstX1, dstY1, mask, filter);
+   if (mask == 0x0) {
+      _mesa_meta_end(ctx);
+      return;
+   }
+
+   /* Continue with "normal" approach which involves copying the src rect
+    * into a temporary texture and is "blitted" by drawing a textured quad.
+    */
+
+   newTex = alloc_texture(tex, srcW, srcH, GL_RGBA);
+
+   /* vertex positions/texcoords (after texture allocation!) */
+   {
+      verts[0].x = (GLfloat) dstX0;
+      verts[0].y = (GLfloat) dstY0;
+      verts[1].x = (GLfloat) dstX1;
+      verts[1].y = (GLfloat) dstY0;
+      verts[2].x = (GLfloat) dstX1;
+      verts[2].y = (GLfloat) dstY1;
+      verts[3].x = (GLfloat) dstX0;
+      verts[3].y = (GLfloat) dstY1;
+
+      verts[0].s = 0.0F;
+      verts[0].t = 0.0F;
+      verts[1].s = tex->Sright;
+      verts[1].t = 0.0F;
+      verts[2].s = tex->Sright;
+      verts[2].t = tex->Ttop;
+      verts[3].s = 0.0F;
+      verts[3].t = tex->Ttop;
+
+      /* upload new vertex data */
+      _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+   }
+
+   _mesa_set_enable(ctx, tex->Target, GL_TRUE);
+
+   if (mask & GL_COLOR_BUFFER_BIT) {
+      setup_copypix_texture(tex, newTex, srcX, srcY, srcW, srcH,
+                            GL_RGBA, filter);
+      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+      mask &= ~GL_COLOR_BUFFER_BIT;
+   }
+
+   if (mask & GL_DEPTH_BUFFER_BIT) {
+      GLuint *tmp = (GLuint *) malloc(srcW * srcH * sizeof(GLuint));
+      if (tmp) {
+         if (!blit->DepthFP)
+            init_blit_depth_pixels(ctx);
+
+         /* maybe change tex format here */
+         newTex = alloc_texture(tex, srcW, srcH, GL_DEPTH_COMPONENT);
+
+         _mesa_ReadPixels(srcX, srcY, srcW, srcH,
+                          GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, tmp);
+
+         setup_drawpix_texture(ctx, tex, newTex, GL_DEPTH_COMPONENT, srcW, srcH,
+                               GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, tmp);
+
+         _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP);
+         _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);
+         _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+         _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_TRUE);
+         _mesa_DepthFunc(GL_ALWAYS);
+         _mesa_DepthMask(GL_TRUE);
+
+         _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+         mask &= ~GL_DEPTH_BUFFER_BIT;
+
+         free(tmp);
+      }
+   }
+
+   if (mask & GL_STENCIL_BUFFER_BIT) {
+      /* XXX can't easily do stencil */
+   }
+
+   _mesa_set_enable(ctx, tex->Target, GL_FALSE);
+
+   _mesa_meta_end(ctx);
+
+   if (mask) {
+      _swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,
+                              dstX0, dstY0, dstX1, dstY1, mask, filter);
+   }
+}
+
+
+/**
+ * Meta implementation of ctx->Driver.Clear() in terms of polygon rendering.
+ */
+void
+_mesa_meta_Clear(struct gl_context *ctx, GLbitfield buffers)
+{
+   struct clear_state *clear = &ctx->Meta->Clear;
+   struct vertex {
+      GLfloat x, y, z, r, g, b, a;
+   };
+   struct vertex verts[4];
+   /* save all state but scissor, pixel pack/unpack */
+   GLbitfield metaSave = META_ALL - META_SCISSOR - META_PIXEL_STORE;
+   const GLuint stencilMax = (1 << ctx->DrawBuffer->Visual.stencilBits) - 1;
+
+   if (buffers & BUFFER_BITS_COLOR) {
+      /* if clearing color buffers, don't save/restore colormask */
+      metaSave -= META_COLOR_MASK;
+   }
+
+   _mesa_meta_begin(ctx, metaSave);
+
+   if (clear->ArrayObj == 0) {
+      /* one-time setup */
+
+      /* create vertex array object */
+      _mesa_GenVertexArrays(1, &clear->ArrayObj);
+      _mesa_BindVertexArray(clear->ArrayObj);
+
+      /* create vertex array buffer */
+      _mesa_GenBuffersARB(1, &clear->VBO);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, clear->VBO);
+
+      /* setup vertex arrays */
+      _mesa_VertexPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(x));
+      _mesa_ColorPointer(4, GL_FLOAT, sizeof(struct vertex), OFFSET(r));
+      _mesa_EnableClientState(GL_VERTEX_ARRAY);
+      _mesa_EnableClientState(GL_COLOR_ARRAY);
+   }
+   else {
+      _mesa_BindVertexArray(clear->ArrayObj);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, clear->VBO);
+   }
+
+   /* GL_COLOR_BUFFER_BIT */
+   if (buffers & BUFFER_BITS_COLOR) {
+      /* leave colormask, glDrawBuffer state as-is */
+   }
+   else {
+      ASSERT(metaSave & META_COLOR_MASK);
+      _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+   }
+
+   /* GL_DEPTH_BUFFER_BIT */
+   if (buffers & BUFFER_BIT_DEPTH) {
+      _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_TRUE);
+      _mesa_DepthFunc(GL_ALWAYS);
+      _mesa_DepthMask(GL_TRUE);
+   }
+   else {
+      assert(!ctx->Depth.Test);
+   }
+
+   /* GL_STENCIL_BUFFER_BIT */
+   if (buffers & BUFFER_BIT_STENCIL) {
+      _mesa_set_enable(ctx, GL_STENCIL_TEST, GL_TRUE);
+      _mesa_StencilOpSeparate(GL_FRONT_AND_BACK,
+                              GL_REPLACE, GL_REPLACE, GL_REPLACE);
+      _mesa_StencilFuncSeparate(GL_FRONT_AND_BACK, GL_ALWAYS,
+                                ctx->Stencil.Clear & stencilMax,
+                                ctx->Stencil.WriteMask[0]);
+   }
+   else {
+      assert(!ctx->Stencil.Enabled);
+   }
+
+   /* vertex positions/colors */
+   {
+      const GLfloat x0 = (GLfloat) ctx->DrawBuffer->_Xmin;
+      const GLfloat y0 = (GLfloat) ctx->DrawBuffer->_Ymin;
+      const GLfloat x1 = (GLfloat) ctx->DrawBuffer->_Xmax;
+      const GLfloat y1 = (GLfloat) ctx->DrawBuffer->_Ymax;
+      const GLfloat z = invert_z(ctx->Depth.Clear);
+      GLuint i;
+
+      verts[0].x = x0;
+      verts[0].y = y0;
+      verts[0].z = z;
+      verts[1].x = x1;
+      verts[1].y = y0;
+      verts[1].z = z;
+      verts[2].x = x1;
+      verts[2].y = y1;
+      verts[2].z = z;
+      verts[3].x = x0;
+      verts[3].y = y1;
+      verts[3].z = z;
+
+      /* vertex colors */
+      for (i = 0; i < 4; i++) {
+         verts[i].r = ctx->Color.ClearColor[0];
+         verts[i].g = ctx->Color.ClearColor[1];
+         verts[i].b = ctx->Color.ClearColor[2];
+         verts[i].a = ctx->Color.ClearColor[3];
+      }
+
+      /* upload new vertex data */
+      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts), verts,
+			  GL_DYNAMIC_DRAW_ARB);
+   }
+
+   /* draw quad */
+   _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+   _mesa_meta_end(ctx);
+}
+
+
+/**
+ * Meta implementation of ctx->Driver.CopyPixels() in terms
+ * of texture mapping and polygon rendering.
+ */
+void
+_mesa_meta_CopyPixels(struct gl_context *ctx, GLint srcX, GLint srcY,
+                      GLsizei width, GLsizei height,
+                      GLint dstX, GLint dstY, GLenum type)
+{
+   struct copypix_state *copypix = &ctx->Meta->CopyPix;
+   struct temp_texture *tex = get_temp_texture(ctx);
+   struct vertex {
+      GLfloat x, y, z, s, t;
+   };
+   struct vertex verts[4];
+   GLboolean newTex;
+   GLenum intFormat = GL_RGBA;
+
+   if (type != GL_COLOR ||
+       ctx->_ImageTransferState ||
+       ctx->Fog.Enabled ||
+       width > tex->MaxSize ||
+       height > tex->MaxSize) {
+      /* XXX avoid this fallback */
+      _swrast_CopyPixels(ctx, srcX, srcY, width, height, dstX, dstY, type);
+      return;
+   }
+
+   /* Most GL state applies to glCopyPixels, but a there's a few things
+    * we need to override:
+    */
+   _mesa_meta_begin(ctx, (META_RASTERIZATION |
+                          META_SHADER |
+                          META_TEXTURE |
+                          META_TRANSFORM |
+                          META_VERTEX |
+                          META_VIEWPORT));
+
+   if (copypix->ArrayObj == 0) {
+      /* one-time setup */
+
+      /* create vertex array object */
+      _mesa_GenVertexArrays(1, &copypix->ArrayObj);
+      _mesa_BindVertexArray(copypix->ArrayObj);
+
+      /* create vertex array buffer */
+      _mesa_GenBuffersARB(1, &copypix->VBO);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, copypix->VBO);
+      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+                          NULL, GL_DYNAMIC_DRAW_ARB);
+
+      /* setup vertex arrays */
+      _mesa_VertexPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(x));
+      _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(s));
+      _mesa_EnableClientState(GL_VERTEX_ARRAY);
+      _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
+   }
+   else {
+      _mesa_BindVertexArray(copypix->ArrayObj);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, copypix->VBO);
+   }
+
+   newTex = alloc_texture(tex, width, height, intFormat);
+
+   /* vertex positions, texcoords (after texture allocation!) */
+   {
+      const GLfloat dstX0 = (GLfloat) dstX;
+      const GLfloat dstY0 = (GLfloat) dstY;
+      const GLfloat dstX1 = dstX + width * ctx->Pixel.ZoomX;
+      const GLfloat dstY1 = dstY + height * ctx->Pixel.ZoomY;
+      const GLfloat z = invert_z(ctx->Current.RasterPos[2]);
+
+      verts[0].x = dstX0;
+      verts[0].y = dstY0;
+      verts[0].z = z;
+      verts[0].s = 0.0F;
+      verts[0].t = 0.0F;
+      verts[1].x = dstX1;
+      verts[1].y = dstY0;
+      verts[1].z = z;
+      verts[1].s = tex->Sright;
+      verts[1].t = 0.0F;
+      verts[2].x = dstX1;
+      verts[2].y = dstY1;
+      verts[2].z = z;
+      verts[2].s = tex->Sright;
+      verts[2].t = tex->Ttop;
+      verts[3].x = dstX0;
+      verts[3].y = dstY1;
+      verts[3].z = z;
+      verts[3].s = 0.0F;
+      verts[3].t = tex->Ttop;
+
+      /* upload new vertex data */
+      _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+   }
+
+   /* Alloc/setup texture */
+   setup_copypix_texture(tex, newTex, srcX, srcY, width, height,
+                         GL_RGBA, GL_NEAREST);
+
+   _mesa_set_enable(ctx, tex->Target, GL_TRUE);
+
+   /* draw textured quad */
+   _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+   _mesa_set_enable(ctx, tex->Target, GL_FALSE);
+
+   _mesa_meta_end(ctx);
+}
+
+
+
+/**
+ * When the glDrawPixels() image size is greater than the max rectangle
+ * texture size we use this function to break the glDrawPixels() image
+ * into tiles which fit into the max texture size.
+ */
+static void
+tiled_draw_pixels(struct gl_context *ctx,
+                  GLint tileSize,
+                  GLint x, GLint y, GLsizei width, GLsizei height,
+                  GLenum format, GLenum type,
+                  const struct gl_pixelstore_attrib *unpack,
+                  const GLvoid *pixels)
+{
+   struct gl_pixelstore_attrib tileUnpack = *unpack;
+   GLint i, j;
+
+   if (tileUnpack.RowLength == 0)
+      tileUnpack.RowLength = width;
+
+   for (i = 0; i < width; i += tileSize) {
+      const GLint tileWidth = MIN2(tileSize, width - i);
+      const GLint tileX = (GLint) (x + i * ctx->Pixel.ZoomX);
+
+      tileUnpack.SkipPixels = unpack->SkipPixels + i;
+
+      for (j = 0; j < height; j += tileSize) {
+         const GLint tileHeight = MIN2(tileSize, height - j);
+         const GLint tileY = (GLint) (y + j * ctx->Pixel.ZoomY);
+
+         tileUnpack.SkipRows = unpack->SkipRows + j;
+
+         _mesa_meta_DrawPixels(ctx, tileX, tileY, tileWidth, tileHeight,
+                               format, type, &tileUnpack, pixels);
+      }
+   }
+}
+
+
+/**
+ * One-time init for drawing stencil pixels.
+ */
+static void
+init_draw_stencil_pixels(struct gl_context *ctx)
+{
+   /* This program is run eight times, once for each stencil bit.
+    * The stencil values to draw are found in an 8-bit alpha texture.
+    * We read the texture/stencil value and test if bit 'b' is set.
+    * If the bit is not set, use KIL to kill the fragment.
+    * Finally, we use the stencil test to update the stencil buffer.
+    *
+    * The basic algorithm for checking if a bit is set is:
+    *   if (is_odd(value / (1 << bit)))
+    *      result is one (or non-zero).
+    *   else
+    *      result is zero.
+    * The program parameter contains three values:
+    *   parm.x = 255 / (1 << bit)
+    *   parm.y = 0.5
+    *   parm.z = 0.0
+    */
+   static const char *program =
+      "!!ARBfp1.0\n"
+      "PARAM parm = program.local[0]; \n"
+      "TEMP t; \n"
+      "TEX t, fragment.texcoord[0], texture[0], %s; \n"   /* NOTE %s here! */
+      "# t = t * 255 / bit \n"
+      "MUL t.x, t.a, parm.x; \n"
+      "# t = (int) t \n"
+      "FRC t.y, t.x; \n"
+      "SUB t.x, t.x, t.y; \n"
+      "# t = t * 0.5 \n"
+      "MUL t.x, t.x, parm.y; \n"
+      "# t = fract(t.x) \n"
+      "FRC t.x, t.x; # if t.x != 0, then the bit is set \n"
+      "# t.x = (t.x == 0 ? 1 : 0) \n"
+      "SGE t.x, -t.x, parm.z; \n"
+      "KIL -t.x; \n"
+      "# for debug only \n"
+      "#MOV result.color, t.x; \n"
+      "END \n";
+   char program2[1000];
+   struct drawpix_state *drawpix = &ctx->Meta->DrawPix;
+   struct temp_texture *tex = get_temp_texture(ctx);
+   const char *texTarget;
+
+   assert(drawpix->StencilFP == 0);
+
+   /* replace %s with "RECT" or "2D" */
+   assert(strlen(program) + 4 < sizeof(program2));
+   if (tex->Target == GL_TEXTURE_RECTANGLE)
+      texTarget = "RECT";
+   else
+      texTarget = "2D";
+   _mesa_snprintf(program2, sizeof(program2), program, texTarget);
+
+   _mesa_GenPrograms(1, &drawpix->StencilFP);
+   _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->StencilFP);
+   _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+                          strlen(program2), (const GLubyte *) program2);
+}
+
+
+/**
+ * One-time init for drawing depth pixels.
+ */
+static void
+init_draw_depth_pixels(struct gl_context *ctx)
+{
+   static const char *program =
+      "!!ARBfp1.0\n"
+      "PARAM color = program.local[0]; \n"
+      "TEX result.depth, fragment.texcoord[0], texture[0], %s; \n"
+      "MOV result.color, color; \n"
+      "END \n";
+   char program2[200];
+   struct drawpix_state *drawpix = &ctx->Meta->DrawPix;
+   struct temp_texture *tex = get_temp_texture(ctx);
+   const char *texTarget;
+
+   assert(drawpix->DepthFP == 0);
+
+   /* replace %s with "RECT" or "2D" */
+   assert(strlen(program) + 4 < sizeof(program2));
+   if (tex->Target == GL_TEXTURE_RECTANGLE)
+      texTarget = "RECT";
+   else
+      texTarget = "2D";
+   _mesa_snprintf(program2, sizeof(program2), program, texTarget);
+
+   _mesa_GenPrograms(1, &drawpix->DepthFP);
+   _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->DepthFP);
+   _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+                          strlen(program2), (const GLubyte *) program2);
+}
+
+
+/**
+ * Meta implementation of ctx->Driver.DrawPixels() in terms
+ * of texture mapping and polygon rendering.
+ */
+void
+_mesa_meta_DrawPixels(struct gl_context *ctx,
+                      GLint x, GLint y, GLsizei width, GLsizei height,
+                      GLenum format, GLenum type,
+                      const struct gl_pixelstore_attrib *unpack,
+                      const GLvoid *pixels)
+{
+   struct drawpix_state *drawpix = &ctx->Meta->DrawPix;
+   struct temp_texture *tex = get_temp_texture(ctx);
+   const struct gl_pixelstore_attrib unpackSave = ctx->Unpack;
+   const GLuint origStencilMask = ctx->Stencil.WriteMask[0];
+   struct vertex {
+      GLfloat x, y, z, s, t;
+   };
+   struct vertex verts[4];
+   GLenum texIntFormat;
+   GLboolean fallback, newTex;
+   GLbitfield metaExtraSave = 0x0;
+   GLuint vbo;
+
+   /*
+    * Determine if we can do the glDrawPixels with texture mapping.
+    */
+   fallback = GL_FALSE;
+   if (ctx->_ImageTransferState ||
+       ctx->Fog.Enabled) {
+      fallback = GL_TRUE;
+   }
+
+   if (_mesa_is_color_format(format)) {
+      /* use more compact format when possible */
+      /* XXX disable special case for GL_LUMINANCE for now to work around
+       * apparent i965 driver bug (see bug #23670).
+       */
+      if (/*format == GL_LUMINANCE ||*/ format == GL_LUMINANCE_ALPHA)
+         texIntFormat = format;
+      else
+         texIntFormat = GL_RGBA;
+   }
+   else if (_mesa_is_stencil_format(format)) {
+      if (ctx->Extensions.ARB_fragment_program &&
+          ctx->Pixel.IndexShift == 0 &&
+          ctx->Pixel.IndexOffset == 0 &&
+          type == GL_UNSIGNED_BYTE) {
+         /* We'll store stencil as alpha.  This only works for GLubyte
+          * image data because of how incoming values are mapped to alpha
+          * in [0,1].
+          */
+         texIntFormat = GL_ALPHA;
+         metaExtraSave = (META_COLOR_MASK |
+                          META_DEPTH_TEST |
+                          META_SHADER |
+                          META_STENCIL_TEST);
+      }
+      else {
+         fallback = GL_TRUE;
+      }
+   }
+   else if (_mesa_is_depth_format(format)) {
+      if (ctx->Extensions.ARB_depth_texture &&
+          ctx->Extensions.ARB_fragment_program) {
+         texIntFormat = GL_DEPTH_COMPONENT;
+         metaExtraSave = (META_SHADER);
+      }
+      else {
+         fallback = GL_TRUE;
+      }
+   }
+   else {
+      fallback = GL_TRUE;
+   }
+
+   if (fallback) {
+      _swrast_DrawPixels(ctx, x, y, width, height,
+                         format, type, unpack, pixels);
+      return;
+   }
+
+   /*
+    * Check image size against max texture size, draw as tiles if needed.
+    */
+   if (width > tex->MaxSize || height > tex->MaxSize) {
+      tiled_draw_pixels(ctx, tex->MaxSize, x, y, width, height,
+                        format, type, unpack, pixels);
+      return;
+   }
+
+   /* Most GL state applies to glDrawPixels (like blending, stencil, etc),
+    * but a there's a few things we need to override:
+    */
+   _mesa_meta_begin(ctx, (META_RASTERIZATION |
+                          META_SHADER |
+                          META_TEXTURE |
+                          META_TRANSFORM |
+                          META_VERTEX |
+                          META_VIEWPORT |
+                          metaExtraSave));
+
+   newTex = alloc_texture(tex, width, height, texIntFormat);
+
+   /* vertex positions, texcoords (after texture allocation!) */
+   {
+      const GLfloat x0 = (GLfloat) x;
+      const GLfloat y0 = (GLfloat) y;
+      const GLfloat x1 = x + width * ctx->Pixel.ZoomX;
+      const GLfloat y1 = y + height * ctx->Pixel.ZoomY;
+      const GLfloat z = invert_z(ctx->Current.RasterPos[2]);
+
+      verts[0].x = x0;
+      verts[0].y = y0;
+      verts[0].z = z;
+      verts[0].s = 0.0F;
+      verts[0].t = 0.0F;
+      verts[1].x = x1;
+      verts[1].y = y0;
+      verts[1].z = z;
+      verts[1].s = tex->Sright;
+      verts[1].t = 0.0F;
+      verts[2].x = x1;
+      verts[2].y = y1;
+      verts[2].z = z;
+      verts[2].s = tex->Sright;
+      verts[2].t = tex->Ttop;
+      verts[3].x = x0;
+      verts[3].y = y1;
+      verts[3].z = z;
+      verts[3].s = 0.0F;
+      verts[3].t = tex->Ttop;
+   }
+
+   if (drawpix->ArrayObj == 0) {
+      /* one-time setup: create vertex array object */
+      _mesa_GenVertexArrays(1, &drawpix->ArrayObj);
+   }
+   _mesa_BindVertexArray(drawpix->ArrayObj);
+
+   /* create vertex array buffer */
+   _mesa_GenBuffersARB(1, &vbo);
+   _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, vbo);
+   _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+                       verts, GL_DYNAMIC_DRAW_ARB);
+
+   /* setup vertex arrays */
+   _mesa_VertexPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(x));
+   _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(s));
+   _mesa_EnableClientState(GL_VERTEX_ARRAY);
+   _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
+
+   /* set given unpack params */
+   ctx->Unpack = *unpack;
+
+   _mesa_set_enable(ctx, tex->Target, GL_TRUE);
+
+   if (_mesa_is_stencil_format(format)) {
+      /* Drawing stencil */
+      GLint bit;
+
+      if (!drawpix->StencilFP)
+         init_draw_stencil_pixels(ctx);
+
+      setup_drawpix_texture(ctx, tex, newTex, texIntFormat, width, height,
+                            GL_ALPHA, type, pixels);
+
+      _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+
+      _mesa_set_enable(ctx, GL_STENCIL_TEST, GL_TRUE);
+
+      /* set all stencil bits to 0 */
+      _mesa_StencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
+      _mesa_StencilFunc(GL_ALWAYS, 0, 255);
+      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+  
+      /* set stencil bits to 1 where needed */
+      _mesa_StencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
+
+      _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->StencilFP);
+      _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);
+
+      for (bit = 0; bit < ctx->DrawBuffer->Visual.stencilBits; bit++) {
+         const GLuint mask = 1 << bit;
+         if (mask & origStencilMask) {
+            _mesa_StencilFunc(GL_ALWAYS, mask, mask);
+            _mesa_StencilMask(mask);
+
+            _mesa_ProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB, 0,
+                                             255.0 / mask, 0.5, 0.0, 0.0);
+
+            _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+         }
+      }
+   }
+   else if (_mesa_is_depth_format(format)) {
+      /* Drawing depth */
+      if (!drawpix->DepthFP)
+         init_draw_depth_pixels(ctx);
+
+      _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->DepthFP);
+      _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);
+
+      /* polygon color = current raster color */
+      _mesa_ProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 0,
+                                        ctx->Current.RasterColor);
+
+      setup_drawpix_texture(ctx, tex, newTex, texIntFormat, width, height,
+                            format, type, pixels);
+
+      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+   }
+   else {
+      /* Drawing RGBA */
+      setup_drawpix_texture(ctx, tex, newTex, texIntFormat, width, height,
+                            format, type, pixels);
+      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+   }
+
+   _mesa_set_enable(ctx, tex->Target, GL_FALSE);
+
+   _mesa_DeleteBuffersARB(1, &vbo);
+
+   /* restore unpack params */
+   ctx->Unpack = unpackSave;
+
+   _mesa_meta_end(ctx);
+}
+
+static GLboolean
+alpha_test_raster_color(struct gl_context *ctx)
+{
+   GLfloat alpha = ctx->Current.RasterColor[ACOMP];
+   GLfloat ref = ctx->Color.AlphaRef;
+
+   switch (ctx->Color.AlphaFunc) {
+      case GL_NEVER:
+	 return GL_FALSE;
+      case GL_LESS:
+	 return alpha < ref;
+      case GL_EQUAL:
+	 return alpha == ref;
+      case GL_LEQUAL:
+	 return alpha <= ref;
+      case GL_GREATER:
+	 return alpha > ref;
+      case GL_NOTEQUAL:
+	 return alpha != ref;
+      case GL_GEQUAL:
+	 return alpha >= ref;
+      case GL_ALWAYS:
+	 return GL_TRUE;
+      default:
+	 assert(0);
+	 return GL_FALSE;
+   }
+}
+
+/**
+ * Do glBitmap with a alpha texture quad.  Use the alpha test to cull
+ * the 'off' bits.  A bitmap cache as in the gallium/mesa state
+ * tracker would improve performance a lot.
+ */
+void
+_mesa_meta_Bitmap(struct gl_context *ctx,
+                  GLint x, GLint y, GLsizei width, GLsizei height,
+                  const struct gl_pixelstore_attrib *unpack,
+                  const GLubyte *bitmap1)
+{
+   struct bitmap_state *bitmap = &ctx->Meta->Bitmap;
+   struct temp_texture *tex = get_bitmap_temp_texture(ctx);
+   const GLenum texIntFormat = GL_ALPHA;
+   const struct gl_pixelstore_attrib unpackSave = *unpack;
+   GLubyte fg, bg;
+   struct vertex {
+      GLfloat x, y, z, s, t, r, g, b, a;
+   };
+   struct vertex verts[4];
+   GLboolean newTex;
+   GLubyte *bitmap8;
+
+   /*
+    * Check if swrast fallback is needed.
+    */
+   if (ctx->_ImageTransferState ||
+       ctx->FragmentProgram._Enabled ||
+       ctx->Fog.Enabled ||
+       ctx->Texture._EnabledUnits ||
+       width > tex->MaxSize ||
+       height > tex->MaxSize) {
+      _swrast_Bitmap(ctx, x, y, width, height, unpack, bitmap1);
+      return;
+   }
+
+   if (ctx->Color.AlphaEnabled && !alpha_test_raster_color(ctx))
+      return;
+
+   /* Most GL state applies to glBitmap (like blending, stencil, etc),
+    * but a there's a few things we need to override:
+    */
+   _mesa_meta_begin(ctx, (META_ALPHA_TEST |
+                          META_PIXEL_STORE |
+                          META_RASTERIZATION |
+                          META_SHADER |
+                          META_TEXTURE |
+                          META_TRANSFORM |
+                          META_VERTEX |
+                          META_VIEWPORT));
+
+   if (bitmap->ArrayObj == 0) {
+      /* one-time setup */
+
+      /* create vertex array object */
+      _mesa_GenVertexArraysAPPLE(1, &bitmap->ArrayObj);
+      _mesa_BindVertexArrayAPPLE(bitmap->ArrayObj);
+
+      /* create vertex array buffer */
+      _mesa_GenBuffersARB(1, &bitmap->VBO);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, bitmap->VBO);
+      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+                          NULL, GL_DYNAMIC_DRAW_ARB);
+
+      /* setup vertex arrays */
+      _mesa_VertexPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(x));
+      _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(s));
+      _mesa_ColorPointer(4, GL_FLOAT, sizeof(struct vertex), OFFSET(r));
+      _mesa_EnableClientState(GL_VERTEX_ARRAY);
+      _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
+      _mesa_EnableClientState(GL_COLOR_ARRAY);
+   }
+   else {
+      _mesa_BindVertexArray(bitmap->ArrayObj);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, bitmap->VBO);
+   }
+
+   newTex = alloc_texture(tex, width, height, texIntFormat);
+
+   /* vertex positions, texcoords, colors (after texture allocation!) */
+   {
+      const GLfloat x0 = (GLfloat) x;
+      const GLfloat y0 = (GLfloat) y;
+      const GLfloat x1 = (GLfloat) (x + width);
+      const GLfloat y1 = (GLfloat) (y + height);
+      const GLfloat z = invert_z(ctx->Current.RasterPos[2]);
+      GLuint i;
+
+      verts[0].x = x0;
+      verts[0].y = y0;
+      verts[0].z = z;
+      verts[0].s = 0.0F;
+      verts[0].t = 0.0F;
+      verts[1].x = x1;
+      verts[1].y = y0;
+      verts[1].z = z;
+      verts[1].s = tex->Sright;
+      verts[1].t = 0.0F;
+      verts[2].x = x1;
+      verts[2].y = y1;
+      verts[2].z = z;
+      verts[2].s = tex->Sright;
+      verts[2].t = tex->Ttop;
+      verts[3].x = x0;
+      verts[3].y = y1;
+      verts[3].z = z;
+      verts[3].s = 0.0F;
+      verts[3].t = tex->Ttop;
+
+      for (i = 0; i < 4; i++) {
+         verts[i].r = ctx->Current.RasterColor[0];
+         verts[i].g = ctx->Current.RasterColor[1];
+         verts[i].b = ctx->Current.RasterColor[2];
+         verts[i].a = ctx->Current.RasterColor[3];
+      }
+
+      /* upload new vertex data */
+      _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+   }
+
+   /* choose different foreground/background alpha values */
+   CLAMPED_FLOAT_TO_UBYTE(fg, ctx->Current.RasterColor[ACOMP]);
+   bg = (fg > 127 ? 0 : 255);
+
+   bitmap1 = _mesa_map_pbo_source(ctx, &unpackSave, bitmap1);
+   if (!bitmap1) {
+      _mesa_meta_end(ctx);
+      return;
+   }
+
+   bitmap8 = (GLubyte *) malloc(width * height);
+   if (bitmap8) {
+      memset(bitmap8, bg, width * height);
+      _mesa_expand_bitmap(width, height, &unpackSave, bitmap1,
+                          bitmap8, width, fg);
+
+      _mesa_set_enable(ctx, tex->Target, GL_TRUE);
+
+      _mesa_set_enable(ctx, GL_ALPHA_TEST, GL_TRUE);
+      _mesa_AlphaFunc(GL_NOTEQUAL, UBYTE_TO_FLOAT(bg));
+
+      setup_drawpix_texture(ctx, tex, newTex, texIntFormat, width, height,
+                            GL_ALPHA, GL_UNSIGNED_BYTE, bitmap8);
+
+      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+      _mesa_set_enable(ctx, tex->Target, GL_FALSE);
+
+      free(bitmap8);
+   }
+
+   _mesa_unmap_pbo_source(ctx, &unpackSave);
+
+   _mesa_meta_end(ctx);
+}
+
+
+/**
+ * Check if the call to _mesa_meta_GenerateMipmap() will require a
+ * software fallback.  The fallback path will require that the texture
+ * images are mapped.
+ * \return GL_TRUE if a fallback is needed, GL_FALSE otherwise
+ */
+GLboolean
+_mesa_meta_check_generate_mipmap_fallback(struct gl_context *ctx, GLenum target,
+                                          struct gl_texture_object *texObj)
+{
+   const GLuint fboSave = ctx->DrawBuffer->Name;
+   struct gen_mipmap_state *mipmap = &ctx->Meta->Mipmap;
+   struct gl_texture_image *baseImage;
+   GLuint srcLevel;
+   GLenum status;
+
+   /* check for fallbacks */
+   if (!ctx->Extensions.EXT_framebuffer_object ||
+       target == GL_TEXTURE_3D) {
+      return GL_TRUE;
+   }
+
+   srcLevel = texObj->BaseLevel;
+   baseImage = _mesa_select_tex_image(ctx, texObj, target, srcLevel);
+   if (!baseImage || _mesa_is_format_compressed(baseImage->TexFormat)) {
+      return GL_TRUE;
+   }
+
+   /*
+    * Test that we can actually render in the texture's format.
+    */
+   if (!mipmap->FBO)
+      _mesa_GenFramebuffersEXT(1, &mipmap->FBO);
+   _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, mipmap->FBO);
+
+   if (target == GL_TEXTURE_1D) {
+      _mesa_FramebufferTexture1DEXT(GL_FRAMEBUFFER_EXT,
+                                    GL_COLOR_ATTACHMENT0_EXT,
+                                    target, texObj->Name, srcLevel);
+   }
+#if 0
+   /* other work is needed to enable 3D mipmap generation */
+   else if (target == GL_TEXTURE_3D) {
+      GLint zoffset = 0;
+      _mesa_FramebufferTexture3DEXT(GL_FRAMEBUFFER_EXT,
+                                    GL_COLOR_ATTACHMENT0_EXT,
+                                    target, texObj->Name, srcLevel, zoffset);
+   }
+#endif
+   else {
+      /* 2D / cube */
+      _mesa_FramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
+                                    GL_COLOR_ATTACHMENT0_EXT,
+                                    target, texObj->Name, srcLevel);
+   }
+
+   status = _mesa_CheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
+
+   _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, fboSave);
+
+   if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+      return GL_TRUE;
+   }
+
+   return GL_FALSE;
+}
+
+
+/**
+ * Called via ctx->Driver.GenerateMipmap()
+ * Note: texture borders and 3D texture support not yet complete.
+ */
+void
+_mesa_meta_GenerateMipmap(struct gl_context *ctx, GLenum target,
+                          struct gl_texture_object *texObj)
+{
+   struct gen_mipmap_state *mipmap = &ctx->Meta->Mipmap;
+   struct vertex {
+      GLfloat x, y, s, t, r;
+   };
+   struct vertex verts[4];
+   const GLuint baseLevel = texObj->BaseLevel;
+   const GLuint maxLevel = texObj->MaxLevel;
+   const GLenum minFilterSave = texObj->MinFilter;
+   const GLenum magFilterSave = texObj->MagFilter;
+   const GLint maxLevelSave = texObj->MaxLevel;
+   const GLboolean genMipmapSave = texObj->GenerateMipmap;
+   const GLenum wrapSSave = texObj->WrapS;
+   const GLenum wrapTSave = texObj->WrapT;
+   const GLenum wrapRSave = texObj->WrapR;
+   const GLuint fboSave = ctx->DrawBuffer->Name;
+   const GLuint original_active_unit = ctx->Texture.CurrentUnit;
+   GLenum faceTarget;
+   GLuint dstLevel;
+   GLuint border = 0;
+
+   if (_mesa_meta_check_generate_mipmap_fallback(ctx, target, texObj)) {
+      _mesa_generate_mipmap(ctx, target, texObj);
+      return;
+   }
+
+   if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X &&
+       target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z) {
+      faceTarget = target;
+      target = GL_TEXTURE_CUBE_MAP;
+   }
+   else {
+      faceTarget = target;
+   }
+
+   _mesa_meta_begin(ctx, META_ALL);
+
+   if (original_active_unit != 0)
+      _mesa_BindTexture(target, texObj->Name);
+
+   if (mipmap->ArrayObj == 0) {
+      /* one-time setup */
+
+      /* create vertex array object */
+      _mesa_GenVertexArraysAPPLE(1, &mipmap->ArrayObj);
+      _mesa_BindVertexArrayAPPLE(mipmap->ArrayObj);
+
+      /* create vertex array buffer */
+      _mesa_GenBuffersARB(1, &mipmap->VBO);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, mipmap->VBO);
+      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+                          NULL, GL_DYNAMIC_DRAW_ARB);
+
+      /* setup vertex arrays */
+      _mesa_VertexPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(x));
+      _mesa_TexCoordPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(s));
+      _mesa_EnableClientState(GL_VERTEX_ARRAY);
+      _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
+   }
+   else {
+      _mesa_BindVertexArray(mipmap->ArrayObj);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, mipmap->VBO);
+   }
+
+   if (!mipmap->FBO) {
+      _mesa_GenFramebuffersEXT(1, &mipmap->FBO);
+   }
+   _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, mipmap->FBO);
+
+   _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+   _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+   _mesa_TexParameteri(target, GL_GENERATE_MIPMAP, GL_FALSE);
+   _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+   _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+   _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
+
+   _mesa_set_enable(ctx, target, GL_TRUE);
+
+   /* setup texcoords once (XXX what about border?) */
+   switch (faceTarget) {
+   case GL_TEXTURE_1D:
+   case GL_TEXTURE_2D:
+      verts[0].s = 0.0F;
+      verts[0].t = 0.0F;
+      verts[0].r = 0.0F;
+      verts[1].s = 1.0F;
+      verts[1].t = 0.0F;
+      verts[1].r = 0.0F;
+      verts[2].s = 1.0F;
+      verts[2].t = 1.0F;
+      verts[2].r = 0.0F;
+      verts[3].s = 0.0F;
+      verts[3].t = 1.0F;
+      verts[3].r = 0.0F;
+      break;
+   case GL_TEXTURE_3D:
+      abort();
+      break;
+   default:
+      /* cube face */
+      {
+         static const GLfloat st[4][2] = {
+            {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f}
+         };
+         GLuint i;
+
+         /* loop over quad verts */
+         for (i = 0; i < 4; i++) {
+            /* Compute sc = +/-scale and tc = +/-scale.
+             * Not +/-1 to avoid cube face selection ambiguity near the edges,
+             * though that can still sometimes happen with this scale factor...
+             */
+            const GLfloat scale = 0.9999f;
+            const GLfloat sc = (2.0f * st[i][0] - 1.0f) * scale;
+            const GLfloat tc = (2.0f * st[i][1] - 1.0f) * scale;
+
+            switch (faceTarget) {
+            case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+               verts[i].s = 1.0f;
+               verts[i].t = -tc;
+               verts[i].r = -sc;
+               break;
+            case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+               verts[i].s = -1.0f;
+               verts[i].t = -tc;
+               verts[i].r = sc;
+               break;
+            case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+               verts[i].s = sc;
+               verts[i].t = 1.0f;
+               verts[i].r = tc;
+               break;
+            case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+               verts[i].s = sc;
+               verts[i].t = -1.0f;
+               verts[i].r = -tc;
+               break;
+            case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+               verts[i].s = sc;
+               verts[i].t = -tc;
+               verts[i].r = 1.0f;
+               break;
+            case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
+               verts[i].s = -sc;
+               verts[i].t = -tc;
+               verts[i].r = -1.0f;
+               break;
+            default:
+               assert(0);
+            }
+         }
+      }
+   }
+
+   _mesa_set_enable(ctx, target, GL_TRUE);
+
+   /* setup vertex positions */
+   {
+      verts[0].x = 0.0F;
+      verts[0].y = 0.0F;
+      verts[1].x = 1.0F;
+      verts[1].y = 0.0F;
+      verts[2].x = 1.0F;
+      verts[2].y = 1.0F;
+      verts[3].x = 0.0F;
+      verts[3].y = 1.0F;
+      
+      /* upload new vertex data */
+      _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+   }
+
+   /* setup projection matrix */
+   _mesa_MatrixMode(GL_PROJECTION);
+   _mesa_LoadIdentity();
+   _mesa_Ortho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
+
+   /* texture is already locked, unlock now */
+   _mesa_unlock_texture(ctx, texObj);
+
+   for (dstLevel = baseLevel + 1; dstLevel <= maxLevel; dstLevel++) {
+      const struct gl_texture_image *srcImage;
+      const GLuint srcLevel = dstLevel - 1;
+      GLsizei srcWidth, srcHeight, srcDepth;
+      GLsizei dstWidth, dstHeight, dstDepth;
+      GLenum status;
+
+      srcImage = _mesa_select_tex_image(ctx, texObj, faceTarget, srcLevel);
+      assert(srcImage->Border == 0); /* XXX we can fix this */
+
+      /* src size w/out border */
+      srcWidth = srcImage->Width - 2 * border;
+      srcHeight = srcImage->Height - 2 * border;
+      srcDepth = srcImage->Depth - 2 * border;
+
+      /* new dst size w/ border */
+      dstWidth = MAX2(1, srcWidth / 2) + 2 * border;
+      dstHeight = MAX2(1, srcHeight / 2) + 2 * border;
+      dstDepth = MAX2(1, srcDepth / 2) + 2 * border;
+
+      if (dstWidth == srcImage->Width &&
+          dstHeight == srcImage->Height &&
+          dstDepth == srcImage->Depth) {
+         /* all done */
+         break;
+      }
+
+      /* Set MaxLevel large enough to hold the new level when we allocate it  */
+      _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, dstLevel);
+
+      /* Create empty dest image */
+      if (target == GL_TEXTURE_1D) {
+         _mesa_TexImage1D(target, dstLevel, srcImage->InternalFormat,
+                          dstWidth, border,
+                          GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+      }
+      else if (target == GL_TEXTURE_3D) {
+         _mesa_TexImage3D(target, dstLevel, srcImage->InternalFormat,
+                          dstWidth, dstHeight, dstDepth, border,
+                          GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+      }
+      else {
+         /* 2D or cube */
+         _mesa_TexImage2D(faceTarget, dstLevel, srcImage->InternalFormat,
+                          dstWidth, dstHeight, border,
+                          GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+
+         if (target == GL_TEXTURE_CUBE_MAP) {
+            /* If texturing from a cube, we need to make sure all src faces
+             * have been defined (even if we're not sampling from them.)
+             * Otherwise the texture object will be 'incomplete' and
+             * texturing from it will not be allowed.
+             */
+            GLuint face;
+            for (face = 0; face < 6; face++) {
+               if (!texObj->Image[face][srcLevel] ||
+                   texObj->Image[face][srcLevel]->Width != srcWidth) {
+                  _mesa_TexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face,
+                                   srcLevel, srcImage->InternalFormat,
+                                   srcWidth, srcHeight, border,
+                                   GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+               }
+            }
+         }
+      }
+
+      /* limit minification to src level */
+      _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, srcLevel);
+
+      /* Set to draw into the current dstLevel */
+      if (target == GL_TEXTURE_1D) {
+         _mesa_FramebufferTexture1DEXT(GL_FRAMEBUFFER_EXT,
+                                       GL_COLOR_ATTACHMENT0_EXT,
+                                       target,
+                                       texObj->Name,
+                                       dstLevel);
+      }
+      else if (target == GL_TEXTURE_3D) {
+         GLint zoffset = 0; /* XXX unfinished */
+         _mesa_FramebufferTexture3DEXT(GL_FRAMEBUFFER_EXT,
+                                       GL_COLOR_ATTACHMENT0_EXT,
+                                       target,
+                                       texObj->Name,
+                                       dstLevel, zoffset);
+      }
+      else {
+         /* 2D / cube */
+         _mesa_FramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
+                                       GL_COLOR_ATTACHMENT0_EXT,
+                                       faceTarget,
+                                       texObj->Name,
+                                       dstLevel);
+      }
+
+      _mesa_DrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
+
+      /* sanity check */
+      status = _mesa_CheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
+      if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+         abort();
+         break;
+      }
+
+      assert(dstWidth == ctx->DrawBuffer->Width);
+      assert(dstHeight == ctx->DrawBuffer->Height);
+
+      /* setup viewport */
+      _mesa_set_viewport(ctx, 0, 0, dstWidth, dstHeight);
+
+      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+   }
+
+   _mesa_lock_texture(ctx, texObj); /* relock */
+
+   _mesa_meta_end(ctx);
+
+   _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, minFilterSave);
+   _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, magFilterSave);
+   _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, maxLevelSave);
+   _mesa_TexParameteri(target, GL_GENERATE_MIPMAP, genMipmapSave);
+   _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, wrapSSave);
+   _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, wrapTSave);
+   _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, wrapRSave);
+
+   _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, fboSave);
+}
+
+
+/**
+ * Determine the GL data type to use for the temporary image read with
+ * ReadPixels() and passed to Tex[Sub]Image().
+ */
+static GLenum
+get_temp_image_type(struct gl_context *ctx, GLenum baseFormat)
+{
+   switch (baseFormat) {
+   case GL_RGBA:
+   case GL_RGB:
+   case GL_ALPHA:
+   case GL_LUMINANCE:
+   case GL_LUMINANCE_ALPHA:
+   case GL_INTENSITY:
+      if (ctx->DrawBuffer->Visual.redBits <= 8)
+         return GL_UNSIGNED_BYTE;
+      else if (ctx->DrawBuffer->Visual.redBits <= 8)
+         return GL_UNSIGNED_SHORT;
+      else
+         return GL_FLOAT;
+   case GL_DEPTH_COMPONENT:
+      return GL_UNSIGNED_INT;
+   case GL_DEPTH_STENCIL:
+      return GL_UNSIGNED_INT_24_8;
+   default:
+      _mesa_problem(ctx, "Unexpected format in get_temp_image_type()");
+      return 0;
+   }
+}
+
+
+/**
+ * Helper for _mesa_meta_CopyTexImage1/2D() functions.
+ * Have to be careful with locking and meta state for pixel transfer.
+ */
+static void
+copy_tex_image(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
+               GLenum internalFormat, GLint x, GLint y,
+               GLsizei width, GLsizei height, GLint border)
+{
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+   GLenum format, type;
+   GLint bpp;
+   void *buf;
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+   texImage = _mesa_get_tex_image(ctx, texObj, target, level);
+
+   /* Choose format/type for temporary image buffer */
+   format = _mesa_base_tex_format(ctx, internalFormat);
+   type = get_temp_image_type(ctx, format);
+   bpp = _mesa_bytes_per_pixel(format, type);
+   if (bpp <= 0) {
+      _mesa_problem(ctx, "Bad bpp in meta copy_tex_image()");
+      return;
+   }
+
+   /*
+    * Alloc image buffer (XXX could use a PBO)
+    */
+   buf = malloc(width * height * bpp);
+   if (!buf) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
+      return;
+   }
+
+   _mesa_unlock_texture(ctx, texObj); /* need to unlock first */
+
+   /*
+    * Read image from framebuffer (disable pixel transfer ops)
+    */
+   _mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER);
+   ctx->Driver.ReadPixels(ctx, x, y, width, height,
+			  format, type, &ctx->Pack, buf);
+   _mesa_meta_end(ctx);
+
+   if (texImage->Data) {
+      ctx->Driver.FreeTexImageData(ctx, texImage);
+   }
+
+   /* The texture's format was already chosen in _mesa_CopyTexImage() */
+   ASSERT(texImage->TexFormat != MESA_FORMAT_NONE);
+
+   /*
+    * Store texture data (with pixel transfer ops)
+    */
+   _mesa_meta_begin(ctx, META_PIXEL_STORE);
+
+   _mesa_update_state(ctx); /* to update pixel transfer state */
+
+   if (target == GL_TEXTURE_1D) {
+      ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
+                             width, border, format, type,
+                             buf, &ctx->Unpack, texObj, texImage);
+   }
+   else {
+      ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
+                             width, height, border, format, type,
+                             buf, &ctx->Unpack, texObj, texImage);
+   }
+   _mesa_meta_end(ctx);
+
+   _mesa_lock_texture(ctx, texObj); /* re-lock */
+
+   free(buf);
+}
+
+
+void
+_mesa_meta_CopyTexImage1D(struct gl_context *ctx, GLenum target, GLint level,
+                          GLenum internalFormat, GLint x, GLint y,
+                          GLsizei width, GLint border)
+{
+   copy_tex_image(ctx, 1, target, level, internalFormat, x, y,
+                  width, 1, border);
+}
+
+
+void
+_mesa_meta_CopyTexImage2D(struct gl_context *ctx, GLenum target, GLint level,
+                          GLenum internalFormat, GLint x, GLint y,
+                          GLsizei width, GLsizei height, GLint border)
+{
+   copy_tex_image(ctx, 2, target, level, internalFormat, x, y,
+                  width, height, border);
+}
+
+
+
+/**
+ * Helper for _mesa_meta_CopyTexSubImage1/2/3D() functions.
+ * Have to be careful with locking and meta state for pixel transfer.
+ */
+static void
+copy_tex_sub_image(struct gl_context *ctx,
+                   GLuint dims, GLenum target, GLint level,
+                   GLint xoffset, GLint yoffset, GLint zoffset,
+                   GLint x, GLint y,
+                   GLsizei width, GLsizei height)
+{
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+   GLenum format, type;
+   GLint bpp;
+   void *buf;
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+   texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+
+   /* Choose format/type for temporary image buffer */
+   format = _mesa_get_format_base_format(texImage->TexFormat);
+   type = get_temp_image_type(ctx, format);
+   bpp = _mesa_bytes_per_pixel(format, type);
+   if (bpp <= 0) {
+      _mesa_problem(ctx, "Bad bpp in meta copy_tex_sub_image()");
+      return;
+   }
+
+   /*
+    * Alloc image buffer (XXX could use a PBO)
+    */
+   buf = malloc(width * height * bpp);
+   if (!buf) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage%uD", dims);
+      return;
+   }
+
+   _mesa_unlock_texture(ctx, texObj); /* need to unlock first */
+
+   /*
+    * Read image from framebuffer (disable pixel transfer ops)
+    */
+   _mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER);
+   ctx->Driver.ReadPixels(ctx, x, y, width, height,
+			  format, type, &ctx->Pack, buf);
+   _mesa_meta_end(ctx);
+
+   _mesa_update_state(ctx); /* to update pixel transfer state */
+
+   /*
+    * Store texture data (with pixel transfer ops)
+    */
+   _mesa_meta_begin(ctx, META_PIXEL_STORE);
+   if (target == GL_TEXTURE_1D) {
+      ctx->Driver.TexSubImage1D(ctx, target, level, xoffset,
+                                width, format, type, buf,
+                                &ctx->Unpack, texObj, texImage);
+   }
+   else if (target == GL_TEXTURE_3D) {
+      ctx->Driver.TexSubImage3D(ctx, target, level, xoffset, yoffset, zoffset,
+                                width, height, 1, format, type, buf,
+                                &ctx->Unpack, texObj, texImage);
+   }
+   else {
+      ctx->Driver.TexSubImage2D(ctx, target, level, xoffset, yoffset,
+                                width, height, format, type, buf,
+                                &ctx->Unpack, texObj, texImage);
+   }
+   _mesa_meta_end(ctx);
+
+   _mesa_lock_texture(ctx, texObj); /* re-lock */
+
+   free(buf);
+}
+
+
+void
+_mesa_meta_CopyTexSubImage1D(struct gl_context *ctx, GLenum target, GLint level,
+                             GLint xoffset,
+                             GLint x, GLint y, GLsizei width)
+{
+   copy_tex_sub_image(ctx, 1, target, level, xoffset, 0, 0,
+                      x, y, width, 1);
+}
+
+
+void
+_mesa_meta_CopyTexSubImage2D(struct gl_context *ctx, GLenum target, GLint level,
+                             GLint xoffset, GLint yoffset,
+                             GLint x, GLint y,
+                             GLsizei width, GLsizei height)
+{
+   copy_tex_sub_image(ctx, 2, target, level, xoffset, yoffset, 0,
+                      x, y, width, height);
+}
+
+
+void
+_mesa_meta_CopyTexSubImage3D(struct gl_context *ctx, GLenum target, GLint level,
+                             GLint xoffset, GLint yoffset, GLint zoffset,
+                             GLint x, GLint y,
+                             GLsizei width, GLsizei height)
+{
+   copy_tex_sub_image(ctx, 3, target, level, xoffset, yoffset, zoffset,
+                      x, y, width, height);
+}
+
+
+void
+_mesa_meta_CopyColorTable(struct gl_context *ctx,
+                          GLenum target, GLenum internalformat,
+                          GLint x, GLint y, GLsizei width)
+{
+   GLfloat *buf;
+
+   buf = (GLfloat *) malloc(width * 4 * sizeof(GLfloat));
+   if (!buf) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyColorTable");
+      return;
+   }
+
+   /*
+    * Read image from framebuffer (disable pixel transfer ops)
+    */
+   _mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER);
+   ctx->Driver.ReadPixels(ctx, x, y, width, 1,
+                          GL_RGBA, GL_FLOAT, &ctx->Pack, buf);
+
+   _mesa_ColorTable(target, internalformat, width, GL_RGBA, GL_FLOAT, buf);
+
+   _mesa_meta_end(ctx);
+
+   free(buf);
+}
+
+
+void
+_mesa_meta_CopyColorSubTable(struct gl_context *ctx,GLenum target, GLsizei start,
+                             GLint x, GLint y, GLsizei width)
+{
+   GLfloat *buf;
+
+   buf = (GLfloat *) malloc(width * 4 * sizeof(GLfloat));
+   if (!buf) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyColorSubTable");
+      return;
+   }
+
+   /*
+    * Read image from framebuffer (disable pixel transfer ops)
+    */
+   _mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER);
+   ctx->Driver.ReadPixels(ctx, x, y, width, 1,
+                          GL_RGBA, GL_FLOAT, &ctx->Pack, buf);
+
+   _mesa_ColorSubTable(target, start, width, GL_RGBA, GL_FLOAT, buf);
+
+   _mesa_meta_end(ctx);
+
+   free(buf);
+}
diff --git a/mesalib/src/mesa/main/attrib.c b/mesalib/src/mesa/main/attrib.c
index f97ec08e5..ae7f633b8 100644
--- a/mesalib/src/mesa/main/attrib.c
+++ b/mesalib/src/mesa/main/attrib.c
@@ -1,1566 +1,1555 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.6

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (C) 2009  VMware, Inc.   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-#include "glheader.h"

-#include "imports.h"

-#include "accum.h"

-#include "arrayobj.h"

-#include "attrib.h"

-#include "blend.h"

-#include "buffers.h"

-#include "bufferobj.h"

-#include "clear.h"

-#include "colormac.h"

-#include "context.h"

-#include "depth.h"

-#include "enable.h"

-#include "enums.h"

-#include "fog.h"

-#include "hint.h"

-#include "light.h"

-#include "lines.h"

-#include "macros.h"

-#include "matrix.h"

-#include "mfeatures.h"

-#include "multisample.h"

-#include "points.h"

-#include "polygon.h"

-#include "scissor.h"

-#include "stencil.h"

-#include "texenv.h"

-#include "texgen.h"

-#include "texobj.h"

-#include "texparam.h"

-#include "texstate.h"

-#include "varray.h"

-#include "viewport.h"

-#include "mtypes.h"

-#include "main/dispatch.h"

-

-

-/**

- * glEnable()/glDisable() attribute group (GL_ENABLE_BIT).

- */

-struct gl_enable_attrib

-{

-   GLboolean AlphaTest;

-   GLboolean AutoNormal;

-   GLboolean Blend;

-   GLbitfield ClipPlanes;

-   GLboolean ColorMaterial;

-   GLboolean CullFace;

-   GLboolean DepthClamp;

-   GLboolean DepthTest;

-   GLboolean Dither;

-   GLboolean Fog;

-   GLboolean Light[MAX_LIGHTS];

-   GLboolean Lighting;

-   GLboolean LineSmooth;

-   GLboolean LineStipple;

-   GLboolean IndexLogicOp;

-   GLboolean ColorLogicOp;

-

-   GLboolean Map1Color4;

-   GLboolean Map1Index;

-   GLboolean Map1Normal;

-   GLboolean Map1TextureCoord1;

-   GLboolean Map1TextureCoord2;

-   GLboolean Map1TextureCoord3;

-   GLboolean Map1TextureCoord4;

-   GLboolean Map1Vertex3;

-   GLboolean Map1Vertex4;

-   GLboolean Map1Attrib[16];  /* GL_NV_vertex_program */

-   GLboolean Map2Color4;

-   GLboolean Map2Index;

-   GLboolean Map2Normal;

-   GLboolean Map2TextureCoord1;

-   GLboolean Map2TextureCoord2;

-   GLboolean Map2TextureCoord3;

-   GLboolean Map2TextureCoord4;

-   GLboolean Map2Vertex3;

-   GLboolean Map2Vertex4;

-   GLboolean Map2Attrib[16];  /* GL_NV_vertex_program */

-

-   GLboolean Normalize;

-   GLboolean PixelTexture;

-   GLboolean PointSmooth;

-   GLboolean PolygonOffsetPoint;

-   GLboolean PolygonOffsetLine;

-   GLboolean PolygonOffsetFill;

-   GLboolean PolygonSmooth;

-   GLboolean PolygonStipple;

-   GLboolean RescaleNormals;

-   GLboolean Scissor;

-   GLboolean Stencil;

-   GLboolean StencilTwoSide;          /* GL_EXT_stencil_two_side */

-   GLboolean MultisampleEnabled;      /* GL_ARB_multisample */

-   GLboolean SampleAlphaToCoverage;   /* GL_ARB_multisample */

-   GLboolean SampleAlphaToOne;        /* GL_ARB_multisample */

-   GLboolean SampleCoverage;          /* GL_ARB_multisample */

-   GLboolean SampleCoverageInvert;    /* GL_ARB_multisample */

-   GLboolean RasterPositionUnclipped; /* GL_IBM_rasterpos_clip */

-

-   GLbitfield Texture[MAX_TEXTURE_UNITS];

-   GLbitfield TexGen[MAX_TEXTURE_UNITS];

-

-   /* SGI_texture_color_table */

-   GLboolean TextureColorTable[MAX_TEXTURE_UNITS];

-

-   /* GL_ARB_vertex_program / GL_NV_vertex_program */

-   GLboolean VertexProgram;

-   GLboolean VertexProgramPointSize;

-   GLboolean VertexProgramTwoSide;

-

-   /* GL_ARB_point_sprite / GL_NV_point_sprite */

-   GLboolean PointSprite;

-   GLboolean FragmentShaderATI;

-};

-

-

-/**

- * Node for the attribute stack.

- */

-struct gl_attrib_node

-{

-   GLbitfield kind;

-   void *data;

-   struct gl_attrib_node *next;

-};

-

-

-

-/**

- * Special struct for saving/restoring texture state (GL_TEXTURE_BIT)

- */

-struct texture_state

-{

-   struct gl_texture_attrib Texture;  /**< The usual context state */

-

-   /** to save per texture object state (wrap modes, filters, etc): */

-   struct gl_texture_object SavedObj[MAX_TEXTURE_UNITS][NUM_TEXTURE_TARGETS];

-

-   /**

-    * To save references to texture objects (so they don't get accidentally

-    * deleted while saved in the attribute stack).

-    */

-   struct gl_texture_object *SavedTexRef[MAX_TEXTURE_UNITS][NUM_TEXTURE_TARGETS];

-};

-

-

-#if FEATURE_attrib_stack

-

-

-/**

- * Allocate new attribute node of given type/kind.  Attach payload data.

- * Insert it into the linked list named by 'head'.

- */

-static void

-save_attrib_data(struct gl_attrib_node **head,

-                 GLbitfield kind, void *payload)

-{

-   struct gl_attrib_node *n = MALLOC_STRUCT(gl_attrib_node);

-   if (n) {

-      n->kind = kind;

-      n->data = payload;

-      /* insert at head */

-      n->next = *head;

-      *head = n;

-   }

-   else {

-      /* out of memory! */

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_PushAttrib(GLbitfield mask)

-{

-   struct gl_attrib_node *head;

-

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (MESA_VERBOSE & VERBOSE_API)

-      _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask);

-

-   if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {

-      _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );

-      return;

-   }

-

-   /* Build linked list of attribute nodes which save all attribute */

-   /* groups specified by the mask. */

-   head = NULL;

-

-   if (mask & GL_ACCUM_BUFFER_BIT) {

-      struct gl_accum_attrib *attr;

-      attr = MALLOC_STRUCT( gl_accum_attrib );

-      memcpy( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );

-      save_attrib_data(&head, GL_ACCUM_BUFFER_BIT, attr);

-   }

-

-   if (mask & GL_COLOR_BUFFER_BIT) {

-      GLuint i;

-      struct gl_colorbuffer_attrib *attr;

-      attr = MALLOC_STRUCT( gl_colorbuffer_attrib );

-      memcpy( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );

-      /* push the Draw FBO's DrawBuffer[] state, not ctx->Color.DrawBuffer[] */

-      for (i = 0; i < ctx->Const.MaxDrawBuffers; i ++)

-         attr->DrawBuffer[i] = ctx->DrawBuffer->ColorDrawBuffer[i];

-      save_attrib_data(&head, GL_COLOR_BUFFER_BIT, attr);

-   }

-

-   if (mask & GL_CURRENT_BIT) {

-      struct gl_current_attrib *attr;

-      FLUSH_CURRENT( ctx, 0 );

-      attr = MALLOC_STRUCT( gl_current_attrib );

-      memcpy( attr, &ctx->Current, sizeof(struct gl_current_attrib) );

-      save_attrib_data(&head, GL_CURRENT_BIT, attr);

-   }

-

-   if (mask & GL_DEPTH_BUFFER_BIT) {

-      struct gl_depthbuffer_attrib *attr;

-      attr = MALLOC_STRUCT( gl_depthbuffer_attrib );

-      memcpy( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );

-      save_attrib_data(&head, GL_DEPTH_BUFFER_BIT, attr);

-   }

-

-   if (mask & GL_ENABLE_BIT) {

-      struct gl_enable_attrib *attr;

-      GLuint i;

-      attr = MALLOC_STRUCT( gl_enable_attrib );

-      /* Copy enable flags from all other attributes into the enable struct. */

-      attr->AlphaTest = ctx->Color.AlphaEnabled;

-      attr->AutoNormal = ctx->Eval.AutoNormal;

-      attr->Blend = ctx->Color.BlendEnabled;

-      attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;

-      attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;

-      attr->CullFace = ctx->Polygon.CullFlag;

-      attr->DepthClamp = ctx->Transform.DepthClamp;

-      attr->DepthTest = ctx->Depth.Test;

-      attr->Dither = ctx->Color.DitherFlag;

-      attr->Fog = ctx->Fog.Enabled;

-      for (i = 0; i < ctx->Const.MaxLights; i++) {

-         attr->Light[i] = ctx->Light.Light[i].Enabled;

-      }

-      attr->Lighting = ctx->Light.Enabled;

-      attr->LineSmooth = ctx->Line.SmoothFlag;

-      attr->LineStipple = ctx->Line.StippleFlag;

-      attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;

-      attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;

-      attr->Map1Color4 = ctx->Eval.Map1Color4;

-      attr->Map1Index = ctx->Eval.Map1Index;

-      attr->Map1Normal = ctx->Eval.Map1Normal;

-      attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;

-      attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;

-      attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;

-      attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;

-      attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;

-      attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;

-      memcpy(attr->Map1Attrib, ctx->Eval.Map1Attrib, sizeof(ctx->Eval.Map1Attrib));

-      attr->Map2Color4 = ctx->Eval.Map2Color4;

-      attr->Map2Index = ctx->Eval.Map2Index;

-      attr->Map2Normal = ctx->Eval.Map2Normal;

-      attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;

-      attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;

-      attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;

-      attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;

-      attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;

-      attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;

-      memcpy(attr->Map2Attrib, ctx->Eval.Map2Attrib, sizeof(ctx->Eval.Map2Attrib));

-      attr->Normalize = ctx->Transform.Normalize;

-      attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;

-      attr->PointSmooth = ctx->Point.SmoothFlag;

-      attr->PointSprite = ctx->Point.PointSprite;

-      attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;

-      attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;

-      attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;

-      attr->PolygonSmooth = ctx->Polygon.SmoothFlag;

-      attr->PolygonStipple = ctx->Polygon.StippleFlag;

-      attr->RescaleNormals = ctx->Transform.RescaleNormals;

-      attr->Scissor = ctx->Scissor.Enabled;

-      attr->Stencil = ctx->Stencil.Enabled;

-      attr->StencilTwoSide = ctx->Stencil.TestTwoSide;

-      attr->MultisampleEnabled = ctx->Multisample.Enabled;

-      attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;

-      attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;

-      attr->SampleCoverage = ctx->Multisample.SampleCoverage;

-      attr->SampleCoverageInvert = ctx->Multisample.SampleCoverageInvert;

-      for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {

-         attr->Texture[i] = ctx->Texture.Unit[i].Enabled;

-         attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;

-         attr->TextureColorTable[i] = ctx->Texture.Unit[i].ColorTableEnabled;

-      }

-      /* GL_NV_vertex_program */

-      attr->VertexProgram = ctx->VertexProgram.Enabled;

-      attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;

-      attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;

-      save_attrib_data(&head, GL_ENABLE_BIT, attr);

-   }

-

-   if (mask & GL_EVAL_BIT) {

-      struct gl_eval_attrib *attr;

-      attr = MALLOC_STRUCT( gl_eval_attrib );

-      memcpy( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );

-      save_attrib_data(&head, GL_EVAL_BIT, attr);

-   }

-

-   if (mask & GL_FOG_BIT) {

-      struct gl_fog_attrib *attr;

-      attr = MALLOC_STRUCT( gl_fog_attrib );

-      memcpy( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );

-      save_attrib_data(&head, GL_FOG_BIT, attr);

-   }

-

-   if (mask & GL_HINT_BIT) {

-      struct gl_hint_attrib *attr;

-      attr = MALLOC_STRUCT( gl_hint_attrib );

-      memcpy( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );

-      save_attrib_data(&head, GL_HINT_BIT, attr);

-   }

-

-   if (mask & GL_LIGHTING_BIT) {

-      struct gl_light_attrib *attr;

-      FLUSH_CURRENT(ctx, 0);	/* flush material changes */

-      attr = MALLOC_STRUCT( gl_light_attrib );

-      memcpy( attr, &ctx->Light, sizeof(struct gl_light_attrib) );

-      save_attrib_data(&head, GL_LIGHTING_BIT, attr);

-   }

-

-   if (mask & GL_LINE_BIT) {

-      struct gl_line_attrib *attr;

-      attr = MALLOC_STRUCT( gl_line_attrib );

-      memcpy( attr, &ctx->Line, sizeof(struct gl_line_attrib) );

-      save_attrib_data(&head, GL_LINE_BIT, attr);

-   }

-

-   if (mask & GL_LIST_BIT) {

-      struct gl_list_attrib *attr;

-      attr = MALLOC_STRUCT( gl_list_attrib );

-      memcpy( attr, &ctx->List, sizeof(struct gl_list_attrib) );

-      save_attrib_data(&head, GL_LIST_BIT, attr);

-   }

-

-   if (mask & GL_PIXEL_MODE_BIT) {

-      struct gl_pixel_attrib *attr;

-      attr = MALLOC_STRUCT( gl_pixel_attrib );

-      memcpy( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );

-      /* push the Read FBO's ReadBuffer state, not ctx->Pixel.ReadBuffer */

-      attr->ReadBuffer = ctx->ReadBuffer->ColorReadBuffer;

-      save_attrib_data(&head, GL_PIXEL_MODE_BIT, attr);

-   }

-

-   if (mask & GL_POINT_BIT) {

-      struct gl_point_attrib *attr;

-      attr = MALLOC_STRUCT( gl_point_attrib );

-      memcpy( attr, &ctx->Point, sizeof(struct gl_point_attrib) );

-      save_attrib_data(&head, GL_POINT_BIT, attr);

-   }

-

-   if (mask & GL_POLYGON_BIT) {

-      struct gl_polygon_attrib *attr;

-      attr = MALLOC_STRUCT( gl_polygon_attrib );

-      memcpy( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );

-      save_attrib_data(&head, GL_POLYGON_BIT, attr);

-   }

-

-   if (mask & GL_POLYGON_STIPPLE_BIT) {

-      GLuint *stipple;

-      stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );

-      memcpy( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );

-      save_attrib_data(&head, GL_POLYGON_STIPPLE_BIT, stipple);

-   }

-

-   if (mask & GL_SCISSOR_BIT) {

-      struct gl_scissor_attrib *attr;

-      attr = MALLOC_STRUCT( gl_scissor_attrib );

-      memcpy( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );

-      save_attrib_data(&head, GL_SCISSOR_BIT, attr);

-   }

-

-   if (mask & GL_STENCIL_BUFFER_BIT) {

-      struct gl_stencil_attrib *attr;

-      attr = MALLOC_STRUCT( gl_stencil_attrib );

-      memcpy( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );

-      save_attrib_data(&head, GL_STENCIL_BUFFER_BIT, attr);

-   }

-

-   if (mask & GL_TEXTURE_BIT) {

-      struct texture_state *texstate = CALLOC_STRUCT(texture_state);

-      GLuint u, tex;

-

-      if (!texstate) {

-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib(GL_TEXTURE_BIT)");

-         goto end;

-      }

-

-      _mesa_lock_context_textures(ctx);

-

-      /* copy/save the bulk of texture state here */

-      memcpy(&texstate->Texture, &ctx->Texture, sizeof(ctx->Texture));

-

-      /* Save references to the currently bound texture objects so they don't

-       * accidentally get deleted while referenced in the attribute stack.

-       */

-      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {

-         for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {

-            _mesa_reference_texobj(&texstate->SavedTexRef[u][tex],

-                                   ctx->Texture.Unit[u].CurrentTex[tex]);

-         }

-      }

-

-      /* copy state/contents of the currently bound texture objects */

-      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {

-         for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {

-            _mesa_copy_texture_object(&texstate->SavedObj[u][tex],

-                                      ctx->Texture.Unit[u].CurrentTex[tex]);

-         }

-      }

-

-      _mesa_unlock_context_textures(ctx);

-

-      save_attrib_data(&head, GL_TEXTURE_BIT, texstate);

-   }

-

-   if (mask & GL_TRANSFORM_BIT) {

-      struct gl_transform_attrib *attr;

-      attr = MALLOC_STRUCT( gl_transform_attrib );

-      memcpy( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );

-      save_attrib_data(&head, GL_TRANSFORM_BIT, attr);

-   }

-

-   if (mask & GL_VIEWPORT_BIT) {

-      struct gl_viewport_attrib *attr;

-      attr = MALLOC_STRUCT( gl_viewport_attrib );

-      memcpy( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );

-      save_attrib_data(&head, GL_VIEWPORT_BIT, attr);

-   }

-

-   /* GL_ARB_multisample */

-   if (mask & GL_MULTISAMPLE_BIT_ARB) {

-      struct gl_multisample_attrib *attr;

-      attr = MALLOC_STRUCT( gl_multisample_attrib );

-      memcpy( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );

-      save_attrib_data(&head, GL_MULTISAMPLE_BIT_ARB, attr);

-   }

-

-end:

-   ctx->AttribStack[ctx->AttribStackDepth] = head;

-   ctx->AttribStackDepth++;

-}

-

-

-

-static void

-pop_enable_group(struct gl_context *ctx, const struct gl_enable_attrib *enable)

-{

-   const GLuint curTexUnitSave = ctx->Texture.CurrentUnit;

-   GLuint i;

-

-#define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)		\

-	if ((VALUE) != (NEWVALUE)) {			\

-	   _mesa_set_enable( ctx, ENUM, (NEWVALUE) );	\

-	}

-

-   TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);

-   if (ctx->Color.BlendEnabled != enable->Blend) {

-      if (ctx->Extensions.EXT_draw_buffers2) {

-         GLuint i;

-         for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {

-            _mesa_set_enablei(ctx, GL_BLEND, i, (enable->Blend >> i) & 1);

-         }

-      }

-      else {

-         _mesa_set_enable(ctx, GL_BLEND, (enable->Blend & 1));

-      }

-   }

-

-   for (i=0;i<MAX_CLIP_PLANES;i++) {

-      const GLuint mask = 1 << i;

-      if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))

-	  _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),

-			   (GLboolean) ((enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE));

-   }

-

-   TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,

-                   GL_COLOR_MATERIAL);

-   TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);

-   TEST_AND_UPDATE(ctx->Transform.DepthClamp, enable->DepthClamp,

-		   GL_DEPTH_CLAMP);

-   TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);

-   TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);

-   TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);

-   TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);

-   TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);

-   TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,

-                   GL_LINE_STIPPLE);

-   TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,

-                   GL_INDEX_LOGIC_OP);

-   TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,

-                   GL_COLOR_LOGIC_OP);

-

-   TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);

-   TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);

-   TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);

-   TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,

-                   GL_MAP1_TEXTURE_COORD_1);

-   TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,

-                   GL_MAP1_TEXTURE_COORD_2);

-   TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,

-                   GL_MAP1_TEXTURE_COORD_3);

-   TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,

-                   GL_MAP1_TEXTURE_COORD_4);

-   TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,

-                   GL_MAP1_VERTEX_3);

-   TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,

-                   GL_MAP1_VERTEX_4);

-   for (i = 0; i < 16; i++) {

-      TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],

-                      GL_MAP1_VERTEX_ATTRIB0_4_NV + i);

-   }

-

-   TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);

-   TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);

-   TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);

-   TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,

-                   GL_MAP2_TEXTURE_COORD_1);

-   TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,

-                   GL_MAP2_TEXTURE_COORD_2);

-   TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,

-                   GL_MAP2_TEXTURE_COORD_3);

-   TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,

-                   GL_MAP2_TEXTURE_COORD_4);

-   TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,

-                   GL_MAP2_VERTEX_3);

-   TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,

-                   GL_MAP2_VERTEX_4);

-   for (i = 0; i < 16; i++) {

-      TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],

-                      GL_MAP2_VERTEX_ATTRIB0_4_NV + i);

-   }

-

-   TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);

-   TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);

-   TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,

-                   GL_RESCALE_NORMAL_EXT);

-   TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,

-                   enable->RasterPositionUnclipped,

-                   GL_RASTER_POSITION_UNCLIPPED_IBM);

-   TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,

-                   GL_POINT_SMOOTH);

-   if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) {

-      TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,

-                      GL_POINT_SPRITE_NV);

-   }

-   TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,

-                   GL_POLYGON_OFFSET_POINT);

-   TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,

-                   GL_POLYGON_OFFSET_LINE);

-   TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,

-                   GL_POLYGON_OFFSET_FILL);

-   TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,

-                   GL_POLYGON_SMOOTH);

-   TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,

-                   GL_POLYGON_STIPPLE);

-   TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);

-   TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);

-   if (ctx->Extensions.EXT_stencil_two_side) {

-      TEST_AND_UPDATE(ctx->Stencil.TestTwoSide, enable->StencilTwoSide, GL_STENCIL_TEST_TWO_SIDE_EXT);

-   }

-   TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,

-                   GL_MULTISAMPLE_ARB);

-   TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,

-                   enable->SampleAlphaToCoverage,

-                   GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);

-   TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,

-                   enable->SampleAlphaToOne,

-                   GL_SAMPLE_ALPHA_TO_ONE_ARB);

-   TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,

-                   enable->SampleCoverage,

-                   GL_SAMPLE_COVERAGE_ARB);

-   TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,

-                   enable->SampleCoverageInvert,

-                   GL_SAMPLE_COVERAGE_INVERT_ARB);

-   /* GL_ARB_vertex_program, GL_NV_vertex_program */

-   TEST_AND_UPDATE(ctx->VertexProgram.Enabled,

-                   enable->VertexProgram,

-                   GL_VERTEX_PROGRAM_ARB);

-   TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,

-                   enable->VertexProgramPointSize,

-                   GL_VERTEX_PROGRAM_POINT_SIZE_ARB);

-   TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,

-                   enable->VertexProgramTwoSide,

-                   GL_VERTEX_PROGRAM_TWO_SIDE_ARB);

-

-#undef TEST_AND_UPDATE

-

-   /* texture unit enables */

-   for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {

-      const GLbitfield enabled = enable->Texture[i];

-      const GLbitfield genEnabled = enable->TexGen[i];

-

-      if (ctx->Texture.Unit[i].Enabled != enabled) {

-         _mesa_ActiveTextureARB(GL_TEXTURE0 + i);

-

-         _mesa_set_enable(ctx, GL_TEXTURE_1D,

-                          (enabled & TEXTURE_1D_BIT) ? GL_TRUE : GL_FALSE);

-         _mesa_set_enable(ctx, GL_TEXTURE_2D,

-                          (enabled & TEXTURE_2D_BIT) ? GL_TRUE : GL_FALSE);

-         _mesa_set_enable(ctx, GL_TEXTURE_3D,

-                          (enabled & TEXTURE_3D_BIT) ? GL_TRUE : GL_FALSE);

-         if (ctx->Extensions.NV_texture_rectangle) {

-            _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_ARB,

-                             (enabled & TEXTURE_RECT_BIT) ? GL_TRUE : GL_FALSE);

-         }

-         if (ctx->Extensions.ARB_texture_cube_map) {

-            _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP,

-                             (enabled & TEXTURE_CUBE_BIT) ? GL_TRUE : GL_FALSE);

-         }

-         if (ctx->Extensions.MESA_texture_array) {

-            _mesa_set_enable(ctx, GL_TEXTURE_1D_ARRAY_EXT,

-                           (enabled & TEXTURE_1D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);

-            _mesa_set_enable(ctx, GL_TEXTURE_2D_ARRAY_EXT,

-                           (enabled & TEXTURE_2D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);

-         }

-      }

-

-      if (ctx->Texture.Unit[i].TexGenEnabled != genEnabled) {

-         _mesa_ActiveTextureARB(GL_TEXTURE0 + i);

-         _mesa_set_enable(ctx, GL_TEXTURE_GEN_S,

-                          (genEnabled & S_BIT) ? GL_TRUE : GL_FALSE);

-         _mesa_set_enable(ctx, GL_TEXTURE_GEN_T,

-                          (genEnabled & T_BIT) ? GL_TRUE : GL_FALSE);

-         _mesa_set_enable(ctx, GL_TEXTURE_GEN_R,

-                          (genEnabled & R_BIT) ? GL_TRUE : GL_FALSE);

-         _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,

-                          (genEnabled & Q_BIT) ? GL_TRUE : GL_FALSE);

-      }

-

-      /* GL_SGI_texture_color_table */

-      ctx->Texture.Unit[i].ColorTableEnabled = enable->TextureColorTable[i];

-   }

-

-   _mesa_ActiveTextureARB(GL_TEXTURE0 + curTexUnitSave);

-}

-

-

-/**

- * Pop/restore texture attribute/group state.

- */

-static void

-pop_texture_group(struct gl_context *ctx, struct texture_state *texstate)

-{

-   GLuint u;

-

-   _mesa_lock_context_textures(ctx);

-

-   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {

-      const struct gl_texture_unit *unit = &texstate->Texture.Unit[u];

-      GLuint tgt;

-

-      _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);

-      _mesa_set_enable(ctx, GL_TEXTURE_1D,

-                       (unit->Enabled & TEXTURE_1D_BIT) ? GL_TRUE : GL_FALSE);

-      _mesa_set_enable(ctx, GL_TEXTURE_2D,

-                       (unit->Enabled & TEXTURE_2D_BIT) ? GL_TRUE : GL_FALSE);

-      _mesa_set_enable(ctx, GL_TEXTURE_3D,

-                       (unit->Enabled & TEXTURE_3D_BIT) ? GL_TRUE : GL_FALSE);

-      if (ctx->Extensions.ARB_texture_cube_map) {

-         _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,

-                     (unit->Enabled & TEXTURE_CUBE_BIT) ? GL_TRUE : GL_FALSE);

-      }

-      if (ctx->Extensions.NV_texture_rectangle) {

-         _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,

-                     (unit->Enabled & TEXTURE_RECT_BIT) ? GL_TRUE : GL_FALSE);

-      }

-      if (ctx->Extensions.MESA_texture_array) {

-         _mesa_set_enable(ctx, GL_TEXTURE_1D_ARRAY_EXT,

-                 (unit->Enabled & TEXTURE_1D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);

-         _mesa_set_enable(ctx, GL_TEXTURE_2D_ARRAY_EXT,

-                 (unit->Enabled & TEXTURE_2D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);

-      }

-

-      if (ctx->Extensions.SGI_texture_color_table) {

-         _mesa_set_enable(ctx, GL_TEXTURE_COLOR_TABLE_SGI,

-                          unit->ColorTableEnabled);

-      }

-      _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);

-      _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);

-      _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenS.Mode);

-      _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenT.Mode);

-      _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenR.Mode);

-      _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenQ.Mode);

-      _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->GenS.ObjectPlane);

-      _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->GenT.ObjectPlane);

-      _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->GenR.ObjectPlane);

-      _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->GenQ.ObjectPlane);

-      /* Eye plane done differently to avoid re-transformation */

-      {

-         struct gl_texture_unit *destUnit = &ctx->Texture.Unit[u];

-         COPY_4FV(destUnit->GenS.EyePlane, unit->GenS.EyePlane);

-         COPY_4FV(destUnit->GenT.EyePlane, unit->GenT.EyePlane);

-         COPY_4FV(destUnit->GenR.EyePlane, unit->GenR.EyePlane);

-         COPY_4FV(destUnit->GenQ.EyePlane, unit->GenQ.EyePlane);

-         if (ctx->Driver.TexGen) {

-            ctx->Driver.TexGen(ctx, GL_S, GL_EYE_PLANE, unit->GenS.EyePlane);

-            ctx->Driver.TexGen(ctx, GL_T, GL_EYE_PLANE, unit->GenT.EyePlane);

-            ctx->Driver.TexGen(ctx, GL_R, GL_EYE_PLANE, unit->GenR.EyePlane);

-            ctx->Driver.TexGen(ctx, GL_Q, GL_EYE_PLANE, unit->GenQ.EyePlane);

-         }

-      }

-      _mesa_set_enable(ctx, GL_TEXTURE_GEN_S,

-                       ((unit->TexGenEnabled & S_BIT) ? GL_TRUE : GL_FALSE));

-      _mesa_set_enable(ctx, GL_TEXTURE_GEN_T,

-                       ((unit->TexGenEnabled & T_BIT) ? GL_TRUE : GL_FALSE));

-      _mesa_set_enable(ctx, GL_TEXTURE_GEN_R,

-                       ((unit->TexGenEnabled & R_BIT) ? GL_TRUE : GL_FALSE));

-      _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,

-                       ((unit->TexGenEnabled & Q_BIT) ? GL_TRUE : GL_FALSE));

-      if (ctx->Extensions.EXT_texture_lod_bias) {

-         _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,

-                       GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);

-      }

-      if (ctx->Extensions.EXT_texture_env_combine ||

-          ctx->Extensions.ARB_texture_env_combine) {

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,

-                       unit->Combine.ModeRGB);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA,

-                       unit->Combine.ModeA);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB,

-                       unit->Combine.SourceRGB[0]);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB,

-                       unit->Combine.SourceRGB[1]);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB,

-                       unit->Combine.SourceRGB[2]);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA,

-                       unit->Combine.SourceA[0]);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA,

-                       unit->Combine.SourceA[1]);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA,

-                       unit->Combine.SourceA[2]);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB,

-                       unit->Combine.OperandRGB[0]);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB,

-                       unit->Combine.OperandRGB[1]);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB,

-                       unit->Combine.OperandRGB[2]);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA,

-                       unit->Combine.OperandA[0]);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA,

-                       unit->Combine.OperandA[1]);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA,

-                       unit->Combine.OperandA[2]);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE,

-                       1 << unit->Combine.ScaleShiftRGB);

-         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,

-                       1 << unit->Combine.ScaleShiftA);

-      }

-

-      /* Restore texture object state for each target */

-      for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {

-         const struct gl_texture_object *obj = NULL;

-         GLenum target;

-

-         obj = &texstate->SavedObj[u][tgt];

-

-         /* don't restore state for unsupported targets to prevent

-          * raising GL errors.

-          */

-         if (obj->Target == GL_TEXTURE_CUBE_MAP_ARB &&

-             !ctx->Extensions.ARB_texture_cube_map) {

-            continue;

-         }

-         else if (obj->Target == GL_TEXTURE_RECTANGLE_NV &&

-                  !ctx->Extensions.NV_texture_rectangle) {

-            continue;

-         }

-         else if ((obj->Target == GL_TEXTURE_1D_ARRAY_EXT ||

-                   obj->Target == GL_TEXTURE_2D_ARRAY_EXT) &&

-                  !ctx->Extensions.MESA_texture_array) {

-            continue;

-         }

-

-         target = obj->Target;

-

-         _mesa_BindTexture(target, obj->Name);

-

-         _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, obj->BorderColor.f);

-         _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);

-         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);

-         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);

-         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);

-         _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);

-         _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);

-         _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);

-         _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);

-         _mesa_TexParameterf(target, GL_TEXTURE_LOD_BIAS, obj->LodBias);

-         _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);

-         if (target != GL_TEXTURE_RECTANGLE_ARB)

-            _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);

-         if (ctx->Extensions.EXT_texture_filter_anisotropic) {

-            _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,

-                                obj->MaxAnisotropy);

-         }

-         if (ctx->Extensions.ARB_shadow_ambient) {

-            _mesa_TexParameterf(target, GL_TEXTURE_COMPARE_FAIL_VALUE_ARB,

-                                obj->CompareFailValue);

-         }

-      }

-

-      /* remove saved references to the texture objects */

-      for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {

-         _mesa_reference_texobj(&texstate->SavedTexRef[u][tgt], NULL);

-      }

-   }

-

-   _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + texstate->Texture.CurrentUnit);

-

-   _mesa_unlock_context_textures(ctx);

-}

-

-

-/*

- * This function is kind of long just because we have to call a lot

- * of device driver functions to update device driver state.

- *

- * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions

- * in order to restore GL state.  This isn't terribly efficient but it

- * ensures that dirty flags and any derived state gets updated correctly.

- * We could at least check if the value to restore equals the current value

- * and then skip the Mesa call.

- */

-void GLAPIENTRY

-_mesa_PopAttrib(void)

-{

-   struct gl_attrib_node *attr, *next;

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (ctx->AttribStackDepth == 0) {

-      _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );

-      return;

-   }

-

-   ctx->AttribStackDepth--;

-   attr = ctx->AttribStack[ctx->AttribStackDepth];

-

-   while (attr) {

-

-      if (MESA_VERBOSE & VERBOSE_API) {

-         _mesa_debug(ctx, "glPopAttrib %s\n",

-                     _mesa_lookup_enum_by_nr(attr->kind));

-      }

-

-      switch (attr->kind) {

-         case GL_ACCUM_BUFFER_BIT:

-            {

-               const struct gl_accum_attrib *accum;

-               accum = (const struct gl_accum_attrib *) attr->data;

-               _mesa_ClearAccum(accum->ClearColor[0],

-                                accum->ClearColor[1],

-                                accum->ClearColor[2],

-                                accum->ClearColor[3]);

-            }

-            break;

-         case GL_COLOR_BUFFER_BIT:

-            {

-               const struct gl_colorbuffer_attrib *color;

-

-               color = (const struct gl_colorbuffer_attrib *) attr->data;

-               _mesa_ClearIndex((GLfloat) color->ClearIndex);

-               _mesa_ClearColor(color->ClearColor[0],

-                                color->ClearColor[1],

-                                color->ClearColor[2],

-                                color->ClearColor[3]);

-               _mesa_IndexMask(color->IndexMask);

-               if (!ctx->Extensions.EXT_draw_buffers2) {

-                  _mesa_ColorMask((GLboolean) (color->ColorMask[0][0] != 0),

-                                  (GLboolean) (color->ColorMask[0][1] != 0),

-                                  (GLboolean) (color->ColorMask[0][2] != 0),

-                                  (GLboolean) (color->ColorMask[0][3] != 0));

-               }

-               else {

-                  GLuint i;

-                  for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {

-                     _mesa_ColorMaskIndexed(i, 

-                                  (GLboolean) (color->ColorMask[i][0] != 0),

-                                  (GLboolean) (color->ColorMask[i][1] != 0),

-                                  (GLboolean) (color->ColorMask[i][2] != 0),

-                                  (GLboolean) (color->ColorMask[i][3] != 0));

-                  }

-               }

-               {

-                  /* Need to determine if more than one color output is

-                   * specified.  If so, call glDrawBuffersARB, else call

-                   * glDrawBuffer().  This is a subtle, but essential point

-                   * since GL_FRONT (for example) is illegal for the former

-                   * function, but legal for the later.

-                   */

-                  GLboolean multipleBuffers = GL_FALSE;

-		  GLuint i;

-

-		  for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {

-		     if (color->DrawBuffer[i] != GL_NONE) {

-			multipleBuffers = GL_TRUE;

-			break;

-		     }

-                  }

-                  /* Call the API_level functions, not _mesa_drawbuffers()

-                   * since we need to do error checking on the pop'd

-                   * GL_DRAW_BUFFER.

-                   * Ex: if GL_FRONT were pushed, but we're popping with a

-                   * user FBO bound, GL_FRONT will be illegal and we'll need

-                   * to record that error.  Per OpenGL ARB decision.

-                   */

-                  if (multipleBuffers)

-                     _mesa_DrawBuffersARB(ctx->Const.MaxDrawBuffers,

-                                          color->DrawBuffer);

-                  else

-                     _mesa_DrawBuffer(color->DrawBuffer[0]);

-               }

-               _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);

-               _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef);

-               if (ctx->Color.BlendEnabled != color->BlendEnabled) {

-                  if (ctx->Extensions.EXT_draw_buffers2) {

-                     GLuint i;

-                     for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {

-                        _mesa_set_enablei(ctx, GL_BLEND, i,

-                                          (color->BlendEnabled >> i) & 1);

-                     }

-                  }

-                  else {

-                     _mesa_set_enable(ctx, GL_BLEND, (color->BlendEnabled & 1));

-                  }

-               }

-               if (ctx->Color._BlendFuncPerBuffer ||

-                   ctx->Color._BlendEquationPerBuffer) {

-                  /* set blend per buffer */

-                  GLuint buf;

-                  for (buf = 0; buf < ctx->Const.MaxDrawBuffers; buf++) {

-                     _mesa_BlendFuncSeparatei(buf, color->Blend[buf].SrcRGB,

-                                              color->Blend[buf].DstRGB,

-                                              color->Blend[buf].SrcA,

-                                              color->Blend[buf].DstA);

-                     _mesa_BlendEquationSeparatei(buf,

-                                                  color->Blend[buf].EquationRGB,

-                                                  color->Blend[buf].EquationA);

-                  }

-               }

-               else {

-                  /* set same blend modes for all buffers */

-                  _mesa_BlendFuncSeparateEXT(color->Blend[0].SrcRGB,

-                                             color->Blend[0].DstRGB,

-                                             color->Blend[0].SrcA,

-                                             color->Blend[0].DstA);

-                  /* This special case is because glBlendEquationSeparateEXT

-                   * cannot take GL_LOGIC_OP as a parameter.

-                   */

-                  if (color->Blend[0].EquationRGB ==

-                      color->Blend[0].EquationA) {

-                     _mesa_BlendEquation(color->Blend[0].EquationRGB);

-                  }

-                  else {

-                     _mesa_BlendEquationSeparateEXT(

-                                                 color->Blend[0].EquationRGB,

-                                                 color->Blend[0].EquationA);

-                  }

-               }

-               _mesa_BlendColor(color->BlendColor[0],

-                                color->BlendColor[1],

-                                color->BlendColor[2],

-                                color->BlendColor[3]);

-               _mesa_LogicOp(color->LogicOp);

-               _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,

-                                color->ColorLogicOpEnabled);

-               _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,

-                                color->IndexLogicOpEnabled);

-               _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);

-            }

-            break;

-         case GL_CURRENT_BIT:

-	    FLUSH_CURRENT( ctx, 0 );

-            memcpy( &ctx->Current, attr->data,

-		    sizeof(struct gl_current_attrib) );

-            break;

-         case GL_DEPTH_BUFFER_BIT:

-            {

-               const struct gl_depthbuffer_attrib *depth;

-               depth = (const struct gl_depthbuffer_attrib *) attr->data;

-               _mesa_DepthFunc(depth->Func);

-               _mesa_ClearDepth(depth->Clear);

-               _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);

-               _mesa_DepthMask(depth->Mask);

-            }

-            break;

-         case GL_ENABLE_BIT:

-            {

-               const struct gl_enable_attrib *enable;

-               enable = (const struct gl_enable_attrib *) attr->data;

-               pop_enable_group(ctx, enable);

-	       ctx->NewState |= _NEW_ALL;

-            }

-            break;

-         case GL_EVAL_BIT:

-            memcpy( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );

-	    ctx->NewState |= _NEW_EVAL;

-            break;

-         case GL_FOG_BIT:

-            {

-               const struct gl_fog_attrib *fog;

-               fog = (const struct gl_fog_attrib *) attr->data;

-               _mesa_set_enable(ctx, GL_FOG, fog->Enabled);

-               _mesa_Fogfv(GL_FOG_COLOR, fog->Color);

-               _mesa_Fogf(GL_FOG_DENSITY, fog->Density);

-               _mesa_Fogf(GL_FOG_START, fog->Start);

-               _mesa_Fogf(GL_FOG_END, fog->End);

-               _mesa_Fogf(GL_FOG_INDEX, fog->Index);

-               _mesa_Fogi(GL_FOG_MODE, fog->Mode);

-            }

-            break;

-         case GL_HINT_BIT:

-            {

-               const struct gl_hint_attrib *hint;

-               hint = (const struct gl_hint_attrib *) attr->data;

-               _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,

-                          hint->PerspectiveCorrection );

-               _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);

-               _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);

-               _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);

-               _mesa_Hint(GL_FOG_HINT, hint->Fog);

-               _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,

-                          hint->ClipVolumeClipping);

-	       _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,

-			  hint->TextureCompression);

-            }

-            break;

-         case GL_LIGHTING_BIT:

-            {

-               GLuint i;

-               const struct gl_light_attrib *light;

-               light = (const struct gl_light_attrib *) attr->data;

-               /* lighting enable */

-               _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);

-               /* per-light state */

-               if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))

-                  _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );

-	       

-               for (i = 0; i < ctx->Const.MaxLights; i++) {

-                  const struct gl_light *l = &light->Light[i];

-                  _mesa_set_enable(ctx, GL_LIGHT0 + i, l->Enabled);

-                  _mesa_light(ctx, i, GL_AMBIENT, l->Ambient);

-                  _mesa_light(ctx, i, GL_DIFFUSE, l->Diffuse);

-                  _mesa_light(ctx, i, GL_SPECULAR, l->Specular );

-                  _mesa_light(ctx, i, GL_POSITION, l->EyePosition);

-                  _mesa_light(ctx, i, GL_SPOT_DIRECTION, l->SpotDirection);

-                  {

-                     GLfloat p[4] = { 0 };

-                     p[0] = l->SpotExponent;

-                     _mesa_light(ctx, i, GL_SPOT_EXPONENT, p);

-                  }

-                  {

-                     GLfloat p[4] = { 0 };

-                     p[0] = l->SpotCutoff;

-                     _mesa_light(ctx, i, GL_SPOT_CUTOFF, p);

-                  }

-                  {

-                     GLfloat p[4] = { 0 };

-                     p[0] = l->ConstantAttenuation;

-                     _mesa_light(ctx, i, GL_CONSTANT_ATTENUATION, p);

-                  }

-                  {

-                     GLfloat p[4] = { 0 };

-                     p[0] = l->LinearAttenuation;

-                     _mesa_light(ctx, i, GL_LINEAR_ATTENUATION, p);

-                  }

-                  {

-                     GLfloat p[4] = { 0 };

-                     p[0] = l->QuadraticAttenuation;

-                     _mesa_light(ctx, i, GL_QUADRATIC_ATTENUATION, p);

-                  }

-                }

-               /* light model */

-               _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,

-                                  light->Model.Ambient);

-               _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,

-                                 (GLfloat) light->Model.LocalViewer);

-               _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,

-                                 (GLfloat) light->Model.TwoSide);

-               _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,

-                                 (GLfloat) light->Model.ColorControl);

-               /* shade model */

-               _mesa_ShadeModel(light->ShadeModel);

-               /* color material */

-               _mesa_ColorMaterial(light->ColorMaterialFace,

-                                   light->ColorMaterialMode);

-               _mesa_set_enable(ctx, GL_COLOR_MATERIAL,

-                                light->ColorMaterialEnabled);

-               /* materials */

-               memcpy(&ctx->Light.Material, &light->Material,

-                      sizeof(struct gl_material));

-            }

-            break;

-         case GL_LINE_BIT:

-            {

-               const struct gl_line_attrib *line;

-               line = (const struct gl_line_attrib *) attr->data;

-               _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);

-               _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);

-               _mesa_LineStipple(line->StippleFactor, line->StipplePattern);

-               _mesa_LineWidth(line->Width);

-            }

-            break;

-         case GL_LIST_BIT:

-            memcpy( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );

-            break;

-         case GL_PIXEL_MODE_BIT:

-            memcpy( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );

-            /* XXX what other pixel state needs to be set by function calls? */

-            _mesa_ReadBuffer(ctx->Pixel.ReadBuffer);

-	    ctx->NewState |= _NEW_PIXEL;

-            break;

-         case GL_POINT_BIT:

-            {

-               const struct gl_point_attrib *point;

-               point = (const struct gl_point_attrib *) attr->data;

-               _mesa_PointSize(point->Size);

-               _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);

-               if (ctx->Extensions.EXT_point_parameters) {

-                  _mesa_PointParameterfv(GL_DISTANCE_ATTENUATION_EXT,

-                                         point->Params);

-                  _mesa_PointParameterf(GL_POINT_SIZE_MIN_EXT,

-                                        point->MinSize);

-                  _mesa_PointParameterf(GL_POINT_SIZE_MAX_EXT,

-                                        point->MaxSize);

-                  _mesa_PointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_EXT,

-                                        point->Threshold);

-               }

-               if (ctx->Extensions.NV_point_sprite

-		   || ctx->Extensions.ARB_point_sprite) {

-                  GLuint u;

-                  for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {

-                     _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,

-                                   (GLint) point->CoordReplace[u]);

-                  }

-                  _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);

-                  if (ctx->Extensions.NV_point_sprite)

-                     _mesa_PointParameteri(GL_POINT_SPRITE_R_MODE_NV,

-                                           ctx->Point.SpriteRMode);

-                  _mesa_PointParameterf(GL_POINT_SPRITE_COORD_ORIGIN,

-                                        (GLfloat)ctx->Point.SpriteOrigin);

-               }

-            }

-            break;

-         case GL_POLYGON_BIT:

-            {

-               const struct gl_polygon_attrib *polygon;

-               polygon = (const struct gl_polygon_attrib *) attr->data;

-               _mesa_CullFace(polygon->CullFaceMode);

-               _mesa_FrontFace(polygon->FrontFace);

-               _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);

-               _mesa_PolygonMode(GL_BACK, polygon->BackMode);

-               _mesa_PolygonOffset(polygon->OffsetFactor,

-                                   polygon->OffsetUnits);

-               _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);

-               _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);

-               _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);

-               _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,

-                                polygon->OffsetPoint);

-               _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,

-                                polygon->OffsetLine);

-               _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,

-                                polygon->OffsetFill);

-            }

-            break;

-	 case GL_POLYGON_STIPPLE_BIT:

-	    memcpy( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );

-	    ctx->NewState |= _NEW_POLYGONSTIPPLE;

-	    if (ctx->Driver.PolygonStipple)

-	       ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );

-	    break;

-         case GL_SCISSOR_BIT:

-            {

-               const struct gl_scissor_attrib *scissor;

-               scissor = (const struct gl_scissor_attrib *) attr->data;

-               _mesa_Scissor(scissor->X, scissor->Y,

-                             scissor->Width, scissor->Height);

-               _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);

-            }

-            break;

-         case GL_STENCIL_BUFFER_BIT:

-            {

-               const struct gl_stencil_attrib *stencil;

-               stencil = (const struct gl_stencil_attrib *) attr->data;

-               _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);

-               _mesa_ClearStencil(stencil->Clear);

-               if (ctx->Extensions.EXT_stencil_two_side) {

-                  _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,

-                                   stencil->TestTwoSide);

-                  _mesa_ActiveStencilFaceEXT(stencil->ActiveFace

-                                             ? GL_BACK : GL_FRONT);

-               }

-               /* front state */

-               _mesa_StencilFuncSeparate(GL_FRONT,

-                                         stencil->Function[0],

-                                         stencil->Ref[0],

-                                         stencil->ValueMask[0]);

-               _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);

-               _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],

-                                       stencil->ZFailFunc[0],

-                                       stencil->ZPassFunc[0]);

-               /* back state */

-               _mesa_StencilFuncSeparate(GL_BACK,

-                                         stencil->Function[1],

-                                         stencil->Ref[1],

-                                         stencil->ValueMask[1]);

-               _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);

-               _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],

-                                       stencil->ZFailFunc[1],

-                                       stencil->ZPassFunc[1]);

-            }

-            break;

-         case GL_TRANSFORM_BIT:

-            {

-               GLuint i;

-               const struct gl_transform_attrib *xform;

-               xform = (const struct gl_transform_attrib *) attr->data;

-               _mesa_MatrixMode(xform->MatrixMode);

-               if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))

-                  _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );

-

-               /* restore clip planes */

-               for (i = 0; i < MAX_CLIP_PLANES; i++) {

-                  const GLuint mask = 1 << i;

-                  const GLfloat *eyePlane = xform->EyeUserPlane[i];

-                  COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);

-                  if (xform->ClipPlanesEnabled & mask) {

-                     _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);

-                  }

-                  else {

-                     _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);

-                  }

-                  if (ctx->Driver.ClipPlane)

-                     ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );

-               }

-

-               /* normalize/rescale */

-               if (xform->Normalize != ctx->Transform.Normalize)

-                  _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);

-               if (xform->RescaleNormals != ctx->Transform.RescaleNormals)

-                  _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,

-                                   ctx->Transform.RescaleNormals);

-               if (xform->DepthClamp != ctx->Transform.DepthClamp)

-                  _mesa_set_enable(ctx, GL_DEPTH_CLAMP,

-                                   ctx->Transform.DepthClamp);

-            }

-            break;

-         case GL_TEXTURE_BIT:

-            /* Take care of texture object reference counters */

-            {

-               struct texture_state *texstate

-                  = (struct texture_state *) attr->data;

-               pop_texture_group(ctx, texstate);

-	       ctx->NewState |= _NEW_TEXTURE;

-            }

-            break;

-         case GL_VIEWPORT_BIT:

-            {

-               const struct gl_viewport_attrib *vp;

-               vp = (const struct gl_viewport_attrib *) attr->data;

-               _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);

-               _mesa_DepthRange(vp->Near, vp->Far);

-            }

-            break;

-         case GL_MULTISAMPLE_BIT_ARB:

-            {

-               const struct gl_multisample_attrib *ms;

-               ms = (const struct gl_multisample_attrib *) attr->data;

-               _mesa_SampleCoverageARB(ms->SampleCoverageValue,

-                                       ms->SampleCoverageInvert);

-            }

-            break;

-

-         default:

-            _mesa_problem( ctx, "Bad attrib flag in PopAttrib");

-            break;

-      }

-

-      next = attr->next;

-      FREE( attr->data );

-      FREE( attr );

-      attr = next;

-   }

-}

-

-

-/**

- * Helper for incrementing/decrementing vertex buffer object reference

- * counts when pushing/popping the GL_CLIENT_VERTEX_ARRAY_BIT attribute group.

- */

-static void

-adjust_buffer_object_ref_counts(struct gl_array_object *arrayObj, GLint step)

-{

-   GLuint i;

-

-   arrayObj->Vertex.BufferObj->RefCount += step;

-   arrayObj->Weight.BufferObj->RefCount += step;

-   arrayObj->Normal.BufferObj->RefCount += step;

-   arrayObj->Color.BufferObj->RefCount += step;

-   arrayObj->SecondaryColor.BufferObj->RefCount += step;

-   arrayObj->FogCoord.BufferObj->RefCount += step;

-   arrayObj->Index.BufferObj->RefCount += step;

-   arrayObj->EdgeFlag.BufferObj->RefCount += step;

-   for (i = 0; i < Elements(arrayObj->TexCoord); i++)

-      arrayObj->TexCoord[i].BufferObj->RefCount += step;

-   for (i = 0; i < Elements(arrayObj->VertexAttrib); i++)

-      arrayObj->VertexAttrib[i].BufferObj->RefCount += step;

-}

-

-

-/**

- * Copy gl_pixelstore_attrib from src to dst, updating buffer

- * object refcounts.

- */

-static void

-copy_pixelstore(struct gl_context *ctx,

-                struct gl_pixelstore_attrib *dst,

-                const struct gl_pixelstore_attrib *src)

-{

-   dst->Alignment = src->Alignment;

-   dst->RowLength = src->RowLength;

-   dst->SkipPixels = src->SkipPixels;

-   dst->SkipRows = src->SkipRows;

-   dst->ImageHeight = src->ImageHeight;

-   dst->SkipImages = src->SkipImages;

-   dst->SwapBytes = src->SwapBytes;

-   dst->LsbFirst = src->LsbFirst;

-   dst->ClientStorage = src->ClientStorage;

-   dst->Invert = src->Invert;

-   _mesa_reference_buffer_object(ctx, &dst->BufferObj, src->BufferObj);

-}

-

-

-#define GL_CLIENT_PACK_BIT (1<<20)

-#define GL_CLIENT_UNPACK_BIT (1<<21)

-

-

-void GLAPIENTRY

-_mesa_PushClientAttrib(GLbitfield mask)

-{

-   struct gl_attrib_node *head;

-

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {

-      _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );

-      return;

-   }

-

-   /* Build linked list of attribute nodes which save all attribute

-    * groups specified by the mask.

-    */

-   head = NULL;

-

-   if (mask & GL_CLIENT_PIXEL_STORE_BIT) {

-      struct gl_pixelstore_attrib *attr;

-      /* packing attribs */

-      attr = CALLOC_STRUCT( gl_pixelstore_attrib );

-      copy_pixelstore(ctx, attr, &ctx->Pack);

-      save_attrib_data(&head, GL_CLIENT_PACK_BIT, attr);

-      /* unpacking attribs */

-      attr = CALLOC_STRUCT( gl_pixelstore_attrib );

-      copy_pixelstore(ctx, attr, &ctx->Unpack);

-      save_attrib_data(&head, GL_CLIENT_UNPACK_BIT, attr);

-   }

-

-   if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {

-      struct gl_array_attrib *attr;

-      struct gl_array_object *obj;

-

-      attr = MALLOC_STRUCT( gl_array_attrib );

-      obj = MALLOC_STRUCT( gl_array_object );

-

-#if FEATURE_ARB_vertex_buffer_object

-      /* increment ref counts since we're copying pointers to these objects */

-      ctx->Array.ArrayBufferObj->RefCount++;

-      ctx->Array.ElementArrayBufferObj->RefCount++;

-#endif

-

-      memcpy( attr, &ctx->Array, sizeof(struct gl_array_attrib) );

-      memcpy( obj, ctx->Array.ArrayObj, sizeof(struct gl_array_object) );

-

-      attr->ArrayObj = obj;

-

-      save_attrib_data(&head, GL_CLIENT_VERTEX_ARRAY_BIT, attr);

-

-      /* bump reference counts on buffer objects */

-      adjust_buffer_object_ref_counts(ctx->Array.ArrayObj, 1);

-   }

-

-   ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;

-   ctx->ClientAttribStackDepth++;

-}

-

-

-

-

-void GLAPIENTRY

-_mesa_PopClientAttrib(void)

-{

-   struct gl_attrib_node *node, *next;

-

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (ctx->ClientAttribStackDepth == 0) {

-      _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );

-      return;

-   }

-

-   ctx->ClientAttribStackDepth--;

-   node = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];

-

-   while (node) {

-      switch (node->kind) {

-         case GL_CLIENT_PACK_BIT:

-            {

-               struct gl_pixelstore_attrib *store =

-                  (struct gl_pixelstore_attrib *) node->data;

-               copy_pixelstore(ctx, &ctx->Pack, store);

-               _mesa_reference_buffer_object(ctx, &store->BufferObj, NULL);

-            }

-	    ctx->NewState |= _NEW_PACKUNPACK;

-            break;

-         case GL_CLIENT_UNPACK_BIT:

-            {

-               struct gl_pixelstore_attrib *store =

-                  (struct gl_pixelstore_attrib *) node->data;

-               copy_pixelstore(ctx, &ctx->Unpack, store);

-               _mesa_reference_buffer_object(ctx, &store->BufferObj, NULL);

-            }

-	    ctx->NewState |= _NEW_PACKUNPACK;

-            break;

-         case GL_CLIENT_VERTEX_ARRAY_BIT: {

-	    struct gl_array_attrib * data =

-	      (struct gl_array_attrib *) node->data;

-

-            adjust_buffer_object_ref_counts(ctx->Array.ArrayObj, -1);

-	 

-            ctx->Array.ActiveTexture = data->ActiveTexture;

-	    if (data->LockCount != 0)

-	       _mesa_LockArraysEXT(data->LockFirst, data->LockCount);

-	    else if (ctx->Array.LockCount)

-	       _mesa_UnlockArraysEXT();

-

-	    _mesa_BindVertexArrayAPPLE( data->ArrayObj->Name );

-	    

-#if FEATURE_ARB_vertex_buffer_object

-            _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB,

-                                data->ArrayBufferObj->Name);

-            _mesa_BindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB,

-                                data->ElementArrayBufferObj->Name);

-#endif

-

-	    memcpy( ctx->Array.ArrayObj, data->ArrayObj,

-		    sizeof( struct gl_array_object ) );

-

-	    FREE( data->ArrayObj );

-	    

-	    /* FIXME: Should some bits in ctx->Array->NewState also be set

-	     * FIXME: here?  It seems like it should be set to inclusive-or

-	     * FIXME: of the old ArrayObj->_Enabled and the new _Enabled.

-	     */

-

-	    ctx->NewState |= _NEW_ARRAY;

-            break;

-	 }

-         default:

-            _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");

-            break;

-      }

-

-      next = node->next;

-      FREE( node->data );

-      FREE( node );

-      node = next;

-   }

-}

-

-

-void

-_mesa_init_attrib_dispatch(struct _glapi_table *disp)

-{

-   SET_PopAttrib(disp, _mesa_PopAttrib);

-   SET_PushAttrib(disp, _mesa_PushAttrib);

-   SET_PopClientAttrib(disp, _mesa_PopClientAttrib);

-   SET_PushClientAttrib(disp, _mesa_PushClientAttrib);

-}

-

-

-#endif /* FEATURE_attrib_stack */

-

-

-/**

- * Free any attribute state data that might be attached to the context.

- */

-void

-_mesa_free_attrib_data(struct gl_context *ctx)

-{

-   while (ctx->AttribStackDepth > 0) {

-      struct gl_attrib_node *attr, *next;

-

-      ctx->AttribStackDepth--;

-      attr = ctx->AttribStack[ctx->AttribStackDepth];

-

-      while (attr) {

-         if (attr->kind == GL_TEXTURE_BIT) {

-            struct texture_state *texstate = (struct texture_state*)attr->data;

-            GLuint u, tgt;

-            /* clear references to the saved texture objects */

-            for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {

-               for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {

-                  _mesa_reference_texobj(&texstate->SavedTexRef[u][tgt], NULL);

-               }

-            }

-         }

-         else {

-            /* any other chunks of state that requires special handling? */

-         }

-

-         next = attr->next;

-         free(attr->data);

-         free(attr);

-         attr = next;

-      }

-   }

-}

-

-

-void _mesa_init_attrib( struct gl_context *ctx )

-{

-   /* Renderer and client attribute stacks */

-   ctx->AttribStackDepth = 0;

-   ctx->ClientAttribStackDepth = 0;

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.6
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "glheader.h"
+#include "imports.h"
+#include "accum.h"
+#include "arrayobj.h"
+#include "attrib.h"
+#include "blend.h"
+#include "buffers.h"
+#include "bufferobj.h"
+#include "clear.h"
+#include "colormac.h"
+#include "context.h"
+#include "depth.h"
+#include "enable.h"
+#include "enums.h"
+#include "fog.h"
+#include "hint.h"
+#include "light.h"
+#include "lines.h"
+#include "macros.h"
+#include "matrix.h"
+#include "mfeatures.h"
+#include "multisample.h"
+#include "points.h"
+#include "polygon.h"
+#include "scissor.h"
+#include "stencil.h"
+#include "texenv.h"
+#include "texgen.h"
+#include "texobj.h"
+#include "texparam.h"
+#include "texstate.h"
+#include "varray.h"
+#include "viewport.h"
+#include "mtypes.h"
+#include "main/dispatch.h"
+
+
+/**
+ * glEnable()/glDisable() attribute group (GL_ENABLE_BIT).
+ */
+struct gl_enable_attrib
+{
+   GLboolean AlphaTest;
+   GLboolean AutoNormal;
+   GLboolean Blend;
+   GLbitfield ClipPlanes;
+   GLboolean ColorMaterial;
+   GLboolean CullFace;
+   GLboolean DepthClamp;
+   GLboolean DepthTest;
+   GLboolean Dither;
+   GLboolean Fog;
+   GLboolean Light[MAX_LIGHTS];
+   GLboolean Lighting;
+   GLboolean LineSmooth;
+   GLboolean LineStipple;
+   GLboolean IndexLogicOp;
+   GLboolean ColorLogicOp;
+
+   GLboolean Map1Color4;
+   GLboolean Map1Index;
+   GLboolean Map1Normal;
+   GLboolean Map1TextureCoord1;
+   GLboolean Map1TextureCoord2;
+   GLboolean Map1TextureCoord3;
+   GLboolean Map1TextureCoord4;
+   GLboolean Map1Vertex3;
+   GLboolean Map1Vertex4;
+   GLboolean Map1Attrib[16];  /* GL_NV_vertex_program */
+   GLboolean Map2Color4;
+   GLboolean Map2Index;
+   GLboolean Map2Normal;
+   GLboolean Map2TextureCoord1;
+   GLboolean Map2TextureCoord2;
+   GLboolean Map2TextureCoord3;
+   GLboolean Map2TextureCoord4;
+   GLboolean Map2Vertex3;
+   GLboolean Map2Vertex4;
+   GLboolean Map2Attrib[16];  /* GL_NV_vertex_program */
+
+   GLboolean Normalize;
+   GLboolean PixelTexture;
+   GLboolean PointSmooth;
+   GLboolean PolygonOffsetPoint;
+   GLboolean PolygonOffsetLine;
+   GLboolean PolygonOffsetFill;
+   GLboolean PolygonSmooth;
+   GLboolean PolygonStipple;
+   GLboolean RescaleNormals;
+   GLboolean Scissor;
+   GLboolean Stencil;
+   GLboolean StencilTwoSide;          /* GL_EXT_stencil_two_side */
+   GLboolean MultisampleEnabled;      /* GL_ARB_multisample */
+   GLboolean SampleAlphaToCoverage;   /* GL_ARB_multisample */
+   GLboolean SampleAlphaToOne;        /* GL_ARB_multisample */
+   GLboolean SampleCoverage;          /* GL_ARB_multisample */
+   GLboolean SampleCoverageInvert;    /* GL_ARB_multisample */
+   GLboolean RasterPositionUnclipped; /* GL_IBM_rasterpos_clip */
+
+   GLbitfield Texture[MAX_TEXTURE_UNITS];
+   GLbitfield TexGen[MAX_TEXTURE_UNITS];
+
+   /* GL_ARB_vertex_program / GL_NV_vertex_program */
+   GLboolean VertexProgram;
+   GLboolean VertexProgramPointSize;
+   GLboolean VertexProgramTwoSide;
+
+   /* GL_ARB_point_sprite / GL_NV_point_sprite */
+   GLboolean PointSprite;
+   GLboolean FragmentShaderATI;
+};
+
+
+/**
+ * Node for the attribute stack.
+ */
+struct gl_attrib_node
+{
+   GLbitfield kind;
+   void *data;
+   struct gl_attrib_node *next;
+};
+
+
+
+/**
+ * Special struct for saving/restoring texture state (GL_TEXTURE_BIT)
+ */
+struct texture_state
+{
+   struct gl_texture_attrib Texture;  /**< The usual context state */
+
+   /** to save per texture object state (wrap modes, filters, etc): */
+   struct gl_texture_object SavedObj[MAX_TEXTURE_UNITS][NUM_TEXTURE_TARGETS];
+
+   /**
+    * To save references to texture objects (so they don't get accidentally
+    * deleted while saved in the attribute stack).
+    */
+   struct gl_texture_object *SavedTexRef[MAX_TEXTURE_UNITS][NUM_TEXTURE_TARGETS];
+};
+
+
+#if FEATURE_attrib_stack
+
+
+/**
+ * Allocate new attribute node of given type/kind.  Attach payload data.
+ * Insert it into the linked list named by 'head'.
+ */
+static void
+save_attrib_data(struct gl_attrib_node **head,
+                 GLbitfield kind, void *payload)
+{
+   struct gl_attrib_node *n = MALLOC_STRUCT(gl_attrib_node);
+   if (n) {
+      n->kind = kind;
+      n->data = payload;
+      /* insert at head */
+      n->next = *head;
+      *head = n;
+   }
+   else {
+      /* out of memory! */
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_PushAttrib(GLbitfield mask)
+{
+   struct gl_attrib_node *head;
+
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask);
+
+   if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
+      _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
+      return;
+   }
+
+   /* Build linked list of attribute nodes which save all attribute */
+   /* groups specified by the mask. */
+   head = NULL;
+
+   if (mask & GL_ACCUM_BUFFER_BIT) {
+      struct gl_accum_attrib *attr;
+      attr = MALLOC_STRUCT( gl_accum_attrib );
+      memcpy( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
+      save_attrib_data(&head, GL_ACCUM_BUFFER_BIT, attr);
+   }
+
+   if (mask & GL_COLOR_BUFFER_BIT) {
+      GLuint i;
+      struct gl_colorbuffer_attrib *attr;
+      attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
+      memcpy( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
+      /* push the Draw FBO's DrawBuffer[] state, not ctx->Color.DrawBuffer[] */
+      for (i = 0; i < ctx->Const.MaxDrawBuffers; i ++)
+         attr->DrawBuffer[i] = ctx->DrawBuffer->ColorDrawBuffer[i];
+      save_attrib_data(&head, GL_COLOR_BUFFER_BIT, attr);
+   }
+
+   if (mask & GL_CURRENT_BIT) {
+      struct gl_current_attrib *attr;
+      FLUSH_CURRENT( ctx, 0 );
+      attr = MALLOC_STRUCT( gl_current_attrib );
+      memcpy( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
+      save_attrib_data(&head, GL_CURRENT_BIT, attr);
+   }
+
+   if (mask & GL_DEPTH_BUFFER_BIT) {
+      struct gl_depthbuffer_attrib *attr;
+      attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
+      memcpy( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
+      save_attrib_data(&head, GL_DEPTH_BUFFER_BIT, attr);
+   }
+
+   if (mask & GL_ENABLE_BIT) {
+      struct gl_enable_attrib *attr;
+      GLuint i;
+      attr = MALLOC_STRUCT( gl_enable_attrib );
+      /* Copy enable flags from all other attributes into the enable struct. */
+      attr->AlphaTest = ctx->Color.AlphaEnabled;
+      attr->AutoNormal = ctx->Eval.AutoNormal;
+      attr->Blend = ctx->Color.BlendEnabled;
+      attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;
+      attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
+      attr->CullFace = ctx->Polygon.CullFlag;
+      attr->DepthClamp = ctx->Transform.DepthClamp;
+      attr->DepthTest = ctx->Depth.Test;
+      attr->Dither = ctx->Color.DitherFlag;
+      attr->Fog = ctx->Fog.Enabled;
+      for (i = 0; i < ctx->Const.MaxLights; i++) {
+         attr->Light[i] = ctx->Light.Light[i].Enabled;
+      }
+      attr->Lighting = ctx->Light.Enabled;
+      attr->LineSmooth = ctx->Line.SmoothFlag;
+      attr->LineStipple = ctx->Line.StippleFlag;
+      attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
+      attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
+      attr->Map1Color4 = ctx->Eval.Map1Color4;
+      attr->Map1Index = ctx->Eval.Map1Index;
+      attr->Map1Normal = ctx->Eval.Map1Normal;
+      attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
+      attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
+      attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
+      attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
+      attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
+      attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
+      memcpy(attr->Map1Attrib, ctx->Eval.Map1Attrib, sizeof(ctx->Eval.Map1Attrib));
+      attr->Map2Color4 = ctx->Eval.Map2Color4;
+      attr->Map2Index = ctx->Eval.Map2Index;
+      attr->Map2Normal = ctx->Eval.Map2Normal;
+      attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
+      attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
+      attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
+      attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
+      attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
+      attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
+      memcpy(attr->Map2Attrib, ctx->Eval.Map2Attrib, sizeof(ctx->Eval.Map2Attrib));
+      attr->Normalize = ctx->Transform.Normalize;
+      attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;
+      attr->PointSmooth = ctx->Point.SmoothFlag;
+      attr->PointSprite = ctx->Point.PointSprite;
+      attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
+      attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
+      attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
+      attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
+      attr->PolygonStipple = ctx->Polygon.StippleFlag;
+      attr->RescaleNormals = ctx->Transform.RescaleNormals;
+      attr->Scissor = ctx->Scissor.Enabled;
+      attr->Stencil = ctx->Stencil.Enabled;
+      attr->StencilTwoSide = ctx->Stencil.TestTwoSide;
+      attr->MultisampleEnabled = ctx->Multisample.Enabled;
+      attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;
+      attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;
+      attr->SampleCoverage = ctx->Multisample.SampleCoverage;
+      attr->SampleCoverageInvert = ctx->Multisample.SampleCoverageInvert;
+      for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
+         attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
+         attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
+      }
+      /* GL_NV_vertex_program */
+      attr->VertexProgram = ctx->VertexProgram.Enabled;
+      attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;
+      attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;
+      save_attrib_data(&head, GL_ENABLE_BIT, attr);
+   }
+
+   if (mask & GL_EVAL_BIT) {
+      struct gl_eval_attrib *attr;
+      attr = MALLOC_STRUCT( gl_eval_attrib );
+      memcpy( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
+      save_attrib_data(&head, GL_EVAL_BIT, attr);
+   }
+
+   if (mask & GL_FOG_BIT) {
+      struct gl_fog_attrib *attr;
+      attr = MALLOC_STRUCT( gl_fog_attrib );
+      memcpy( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
+      save_attrib_data(&head, GL_FOG_BIT, attr);
+   }
+
+   if (mask & GL_HINT_BIT) {
+      struct gl_hint_attrib *attr;
+      attr = MALLOC_STRUCT( gl_hint_attrib );
+      memcpy( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
+      save_attrib_data(&head, GL_HINT_BIT, attr);
+   }
+
+   if (mask & GL_LIGHTING_BIT) {
+      struct gl_light_attrib *attr;
+      FLUSH_CURRENT(ctx, 0);	/* flush material changes */
+      attr = MALLOC_STRUCT( gl_light_attrib );
+      memcpy( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
+      save_attrib_data(&head, GL_LIGHTING_BIT, attr);
+   }
+
+   if (mask & GL_LINE_BIT) {
+      struct gl_line_attrib *attr;
+      attr = MALLOC_STRUCT( gl_line_attrib );
+      memcpy( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
+      save_attrib_data(&head, GL_LINE_BIT, attr);
+   }
+
+   if (mask & GL_LIST_BIT) {
+      struct gl_list_attrib *attr;
+      attr = MALLOC_STRUCT( gl_list_attrib );
+      memcpy( attr, &ctx->List, sizeof(struct gl_list_attrib) );
+      save_attrib_data(&head, GL_LIST_BIT, attr);
+   }
+
+   if (mask & GL_PIXEL_MODE_BIT) {
+      struct gl_pixel_attrib *attr;
+      attr = MALLOC_STRUCT( gl_pixel_attrib );
+      memcpy( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
+      /* push the Read FBO's ReadBuffer state, not ctx->Pixel.ReadBuffer */
+      attr->ReadBuffer = ctx->ReadBuffer->ColorReadBuffer;
+      save_attrib_data(&head, GL_PIXEL_MODE_BIT, attr);
+   }
+
+   if (mask & GL_POINT_BIT) {
+      struct gl_point_attrib *attr;
+      attr = MALLOC_STRUCT( gl_point_attrib );
+      memcpy( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
+      save_attrib_data(&head, GL_POINT_BIT, attr);
+   }
+
+   if (mask & GL_POLYGON_BIT) {
+      struct gl_polygon_attrib *attr;
+      attr = MALLOC_STRUCT( gl_polygon_attrib );
+      memcpy( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
+      save_attrib_data(&head, GL_POLYGON_BIT, attr);
+   }
+
+   if (mask & GL_POLYGON_STIPPLE_BIT) {
+      GLuint *stipple;
+      stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
+      memcpy( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
+      save_attrib_data(&head, GL_POLYGON_STIPPLE_BIT, stipple);
+   }
+
+   if (mask & GL_SCISSOR_BIT) {
+      struct gl_scissor_attrib *attr;
+      attr = MALLOC_STRUCT( gl_scissor_attrib );
+      memcpy( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
+      save_attrib_data(&head, GL_SCISSOR_BIT, attr);
+   }
+
+   if (mask & GL_STENCIL_BUFFER_BIT) {
+      struct gl_stencil_attrib *attr;
+      attr = MALLOC_STRUCT( gl_stencil_attrib );
+      memcpy( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
+      save_attrib_data(&head, GL_STENCIL_BUFFER_BIT, attr);
+   }
+
+   if (mask & GL_TEXTURE_BIT) {
+      struct texture_state *texstate = CALLOC_STRUCT(texture_state);
+      GLuint u, tex;
+
+      if (!texstate) {
+         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib(GL_TEXTURE_BIT)");
+         goto end;
+      }
+
+      _mesa_lock_context_textures(ctx);
+
+      /* copy/save the bulk of texture state here */
+      memcpy(&texstate->Texture, &ctx->Texture, sizeof(ctx->Texture));
+
+      /* Save references to the currently bound texture objects so they don't
+       * accidentally get deleted while referenced in the attribute stack.
+       */
+      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+         for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
+            _mesa_reference_texobj(&texstate->SavedTexRef[u][tex],
+                                   ctx->Texture.Unit[u].CurrentTex[tex]);
+         }
+      }
+
+      /* copy state/contents of the currently bound texture objects */
+      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+         for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
+            _mesa_copy_texture_object(&texstate->SavedObj[u][tex],
+                                      ctx->Texture.Unit[u].CurrentTex[tex]);
+         }
+      }
+
+      _mesa_unlock_context_textures(ctx);
+
+      save_attrib_data(&head, GL_TEXTURE_BIT, texstate);
+   }
+
+   if (mask & GL_TRANSFORM_BIT) {
+      struct gl_transform_attrib *attr;
+      attr = MALLOC_STRUCT( gl_transform_attrib );
+      memcpy( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
+      save_attrib_data(&head, GL_TRANSFORM_BIT, attr);
+   }
+
+   if (mask & GL_VIEWPORT_BIT) {
+      struct gl_viewport_attrib *attr;
+      attr = MALLOC_STRUCT( gl_viewport_attrib );
+      memcpy( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
+      save_attrib_data(&head, GL_VIEWPORT_BIT, attr);
+   }
+
+   /* GL_ARB_multisample */
+   if (mask & GL_MULTISAMPLE_BIT_ARB) {
+      struct gl_multisample_attrib *attr;
+      attr = MALLOC_STRUCT( gl_multisample_attrib );
+      memcpy( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
+      save_attrib_data(&head, GL_MULTISAMPLE_BIT_ARB, attr);
+   }
+
+end:
+   ctx->AttribStack[ctx->AttribStackDepth] = head;
+   ctx->AttribStackDepth++;
+}
+
+
+
+static void
+pop_enable_group(struct gl_context *ctx, const struct gl_enable_attrib *enable)
+{
+   const GLuint curTexUnitSave = ctx->Texture.CurrentUnit;
+   GLuint i;
+
+#define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)		\
+	if ((VALUE) != (NEWVALUE)) {			\
+	   _mesa_set_enable( ctx, ENUM, (NEWVALUE) );	\
+	}
+
+   TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
+   if (ctx->Color.BlendEnabled != enable->Blend) {
+      if (ctx->Extensions.EXT_draw_buffers2) {
+         GLuint i;
+         for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
+            _mesa_set_enablei(ctx, GL_BLEND, i, (enable->Blend >> i) & 1);
+         }
+      }
+      else {
+         _mesa_set_enable(ctx, GL_BLEND, (enable->Blend & 1));
+      }
+   }
+
+   for (i=0;i<MAX_CLIP_PLANES;i++) {
+      const GLuint mask = 1 << i;
+      if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
+	  _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
+			   (GLboolean) ((enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE));
+   }
+
+   TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
+                   GL_COLOR_MATERIAL);
+   TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
+   TEST_AND_UPDATE(ctx->Transform.DepthClamp, enable->DepthClamp,
+		   GL_DEPTH_CLAMP);
+   TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
+   TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
+   TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
+   TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
+   TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
+   TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
+                   GL_LINE_STIPPLE);
+   TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
+                   GL_INDEX_LOGIC_OP);
+   TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
+                   GL_COLOR_LOGIC_OP);
+
+   TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
+   TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
+   TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
+   TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
+                   GL_MAP1_TEXTURE_COORD_1);
+   TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
+                   GL_MAP1_TEXTURE_COORD_2);
+   TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
+                   GL_MAP1_TEXTURE_COORD_3);
+   TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
+                   GL_MAP1_TEXTURE_COORD_4);
+   TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
+                   GL_MAP1_VERTEX_3);
+   TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
+                   GL_MAP1_VERTEX_4);
+   for (i = 0; i < 16; i++) {
+      TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],
+                      GL_MAP1_VERTEX_ATTRIB0_4_NV + i);
+   }
+
+   TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
+   TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
+   TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
+   TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
+                   GL_MAP2_TEXTURE_COORD_1);
+   TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
+                   GL_MAP2_TEXTURE_COORD_2);
+   TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
+                   GL_MAP2_TEXTURE_COORD_3);
+   TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
+                   GL_MAP2_TEXTURE_COORD_4);
+   TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
+                   GL_MAP2_VERTEX_3);
+   TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
+                   GL_MAP2_VERTEX_4);
+   for (i = 0; i < 16; i++) {
+      TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],
+                      GL_MAP2_VERTEX_ATTRIB0_4_NV + i);
+   }
+
+   TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
+   TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
+   TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
+                   GL_RESCALE_NORMAL_EXT);
+   TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
+                   enable->RasterPositionUnclipped,
+                   GL_RASTER_POSITION_UNCLIPPED_IBM);
+   TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
+                   GL_POINT_SMOOTH);
+   if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) {
+      TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,
+                      GL_POINT_SPRITE_NV);
+   }
+   TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
+                   GL_POLYGON_OFFSET_POINT);
+   TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
+                   GL_POLYGON_OFFSET_LINE);
+   TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
+                   GL_POLYGON_OFFSET_FILL);
+   TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
+                   GL_POLYGON_SMOOTH);
+   TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
+                   GL_POLYGON_STIPPLE);
+   TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
+   TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
+   if (ctx->Extensions.EXT_stencil_two_side) {
+      TEST_AND_UPDATE(ctx->Stencil.TestTwoSide, enable->StencilTwoSide, GL_STENCIL_TEST_TWO_SIDE_EXT);
+   }
+   TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
+                   GL_MULTISAMPLE_ARB);
+   TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
+                   enable->SampleAlphaToCoverage,
+                   GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
+   TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
+                   enable->SampleAlphaToOne,
+                   GL_SAMPLE_ALPHA_TO_ONE_ARB);
+   TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
+                   enable->SampleCoverage,
+                   GL_SAMPLE_COVERAGE_ARB);
+   TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,
+                   enable->SampleCoverageInvert,
+                   GL_SAMPLE_COVERAGE_INVERT_ARB);
+   /* GL_ARB_vertex_program, GL_NV_vertex_program */
+   TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
+                   enable->VertexProgram,
+                   GL_VERTEX_PROGRAM_ARB);
+   TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
+                   enable->VertexProgramPointSize,
+                   GL_VERTEX_PROGRAM_POINT_SIZE_ARB);
+   TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
+                   enable->VertexProgramTwoSide,
+                   GL_VERTEX_PROGRAM_TWO_SIDE_ARB);
+
+#undef TEST_AND_UPDATE
+
+   /* texture unit enables */
+   for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
+      const GLbitfield enabled = enable->Texture[i];
+      const GLbitfield genEnabled = enable->TexGen[i];
+
+      if (ctx->Texture.Unit[i].Enabled != enabled) {
+         _mesa_ActiveTextureARB(GL_TEXTURE0 + i);
+
+         _mesa_set_enable(ctx, GL_TEXTURE_1D,
+                          (enabled & TEXTURE_1D_BIT) ? GL_TRUE : GL_FALSE);
+         _mesa_set_enable(ctx, GL_TEXTURE_2D,
+                          (enabled & TEXTURE_2D_BIT) ? GL_TRUE : GL_FALSE);
+         _mesa_set_enable(ctx, GL_TEXTURE_3D,
+                          (enabled & TEXTURE_3D_BIT) ? GL_TRUE : GL_FALSE);
+         if (ctx->Extensions.NV_texture_rectangle) {
+            _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_ARB,
+                             (enabled & TEXTURE_RECT_BIT) ? GL_TRUE : GL_FALSE);
+         }
+         if (ctx->Extensions.ARB_texture_cube_map) {
+            _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP,
+                             (enabled & TEXTURE_CUBE_BIT) ? GL_TRUE : GL_FALSE);
+         }
+         if (ctx->Extensions.MESA_texture_array) {
+            _mesa_set_enable(ctx, GL_TEXTURE_1D_ARRAY_EXT,
+                           (enabled & TEXTURE_1D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_2D_ARRAY_EXT,
+                           (enabled & TEXTURE_2D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);
+         }
+      }
+
+      if (ctx->Texture.Unit[i].TexGenEnabled != genEnabled) {
+         _mesa_ActiveTextureARB(GL_TEXTURE0 + i);
+         _mesa_set_enable(ctx, GL_TEXTURE_GEN_S,
+                          (genEnabled & S_BIT) ? GL_TRUE : GL_FALSE);
+         _mesa_set_enable(ctx, GL_TEXTURE_GEN_T,
+                          (genEnabled & T_BIT) ? GL_TRUE : GL_FALSE);
+         _mesa_set_enable(ctx, GL_TEXTURE_GEN_R,
+                          (genEnabled & R_BIT) ? GL_TRUE : GL_FALSE);
+         _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,
+                          (genEnabled & Q_BIT) ? GL_TRUE : GL_FALSE);
+      }
+   }
+
+   _mesa_ActiveTextureARB(GL_TEXTURE0 + curTexUnitSave);
+}
+
+
+/**
+ * Pop/restore texture attribute/group state.
+ */
+static void
+pop_texture_group(struct gl_context *ctx, struct texture_state *texstate)
+{
+   GLuint u;
+
+   _mesa_lock_context_textures(ctx);
+
+   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+      const struct gl_texture_unit *unit = &texstate->Texture.Unit[u];
+      GLuint tgt;
+
+      _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
+      _mesa_set_enable(ctx, GL_TEXTURE_1D,
+                       (unit->Enabled & TEXTURE_1D_BIT) ? GL_TRUE : GL_FALSE);
+      _mesa_set_enable(ctx, GL_TEXTURE_2D,
+                       (unit->Enabled & TEXTURE_2D_BIT) ? GL_TRUE : GL_FALSE);
+      _mesa_set_enable(ctx, GL_TEXTURE_3D,
+                       (unit->Enabled & TEXTURE_3D_BIT) ? GL_TRUE : GL_FALSE);
+      if (ctx->Extensions.ARB_texture_cube_map) {
+         _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
+                     (unit->Enabled & TEXTURE_CUBE_BIT) ? GL_TRUE : GL_FALSE);
+      }
+      if (ctx->Extensions.NV_texture_rectangle) {
+         _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
+                     (unit->Enabled & TEXTURE_RECT_BIT) ? GL_TRUE : GL_FALSE);
+      }
+      if (ctx->Extensions.MESA_texture_array) {
+         _mesa_set_enable(ctx, GL_TEXTURE_1D_ARRAY_EXT,
+                 (unit->Enabled & TEXTURE_1D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);
+         _mesa_set_enable(ctx, GL_TEXTURE_2D_ARRAY_EXT,
+                 (unit->Enabled & TEXTURE_2D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);
+      }
+
+      _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
+      _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
+      _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenS.Mode);
+      _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenT.Mode);
+      _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenR.Mode);
+      _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenQ.Mode);
+      _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->GenS.ObjectPlane);
+      _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->GenT.ObjectPlane);
+      _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->GenR.ObjectPlane);
+      _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->GenQ.ObjectPlane);
+      /* Eye plane done differently to avoid re-transformation */
+      {
+         struct gl_texture_unit *destUnit = &ctx->Texture.Unit[u];
+         COPY_4FV(destUnit->GenS.EyePlane, unit->GenS.EyePlane);
+         COPY_4FV(destUnit->GenT.EyePlane, unit->GenT.EyePlane);
+         COPY_4FV(destUnit->GenR.EyePlane, unit->GenR.EyePlane);
+         COPY_4FV(destUnit->GenQ.EyePlane, unit->GenQ.EyePlane);
+         if (ctx->Driver.TexGen) {
+            ctx->Driver.TexGen(ctx, GL_S, GL_EYE_PLANE, unit->GenS.EyePlane);
+            ctx->Driver.TexGen(ctx, GL_T, GL_EYE_PLANE, unit->GenT.EyePlane);
+            ctx->Driver.TexGen(ctx, GL_R, GL_EYE_PLANE, unit->GenR.EyePlane);
+            ctx->Driver.TexGen(ctx, GL_Q, GL_EYE_PLANE, unit->GenQ.EyePlane);
+         }
+      }
+      _mesa_set_enable(ctx, GL_TEXTURE_GEN_S,
+                       ((unit->TexGenEnabled & S_BIT) ? GL_TRUE : GL_FALSE));
+      _mesa_set_enable(ctx, GL_TEXTURE_GEN_T,
+                       ((unit->TexGenEnabled & T_BIT) ? GL_TRUE : GL_FALSE));
+      _mesa_set_enable(ctx, GL_TEXTURE_GEN_R,
+                       ((unit->TexGenEnabled & R_BIT) ? GL_TRUE : GL_FALSE));
+      _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,
+                       ((unit->TexGenEnabled & Q_BIT) ? GL_TRUE : GL_FALSE));
+      if (ctx->Extensions.EXT_texture_lod_bias) {
+         _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
+                       GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
+      }
+      if (ctx->Extensions.EXT_texture_env_combine ||
+          ctx->Extensions.ARB_texture_env_combine) {
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,
+                       unit->Combine.ModeRGB);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA,
+                       unit->Combine.ModeA);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB,
+                       unit->Combine.SourceRGB[0]);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB,
+                       unit->Combine.SourceRGB[1]);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB,
+                       unit->Combine.SourceRGB[2]);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA,
+                       unit->Combine.SourceA[0]);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA,
+                       unit->Combine.SourceA[1]);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA,
+                       unit->Combine.SourceA[2]);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB,
+                       unit->Combine.OperandRGB[0]);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB,
+                       unit->Combine.OperandRGB[1]);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB,
+                       unit->Combine.OperandRGB[2]);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA,
+                       unit->Combine.OperandA[0]);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA,
+                       unit->Combine.OperandA[1]);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA,
+                       unit->Combine.OperandA[2]);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE,
+                       1 << unit->Combine.ScaleShiftRGB);
+         _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
+                       1 << unit->Combine.ScaleShiftA);
+      }
+
+      /* Restore texture object state for each target */
+      for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
+         const struct gl_texture_object *obj = NULL;
+         GLenum target;
+
+         obj = &texstate->SavedObj[u][tgt];
+
+         /* don't restore state for unsupported targets to prevent
+          * raising GL errors.
+          */
+         if (obj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
+             !ctx->Extensions.ARB_texture_cube_map) {
+            continue;
+         }
+         else if (obj->Target == GL_TEXTURE_RECTANGLE_NV &&
+                  !ctx->Extensions.NV_texture_rectangle) {
+            continue;
+         }
+         else if ((obj->Target == GL_TEXTURE_1D_ARRAY_EXT ||
+                   obj->Target == GL_TEXTURE_2D_ARRAY_EXT) &&
+                  !ctx->Extensions.MESA_texture_array) {
+            continue;
+         }
+
+         target = obj->Target;
+
+         _mesa_BindTexture(target, obj->Name);
+
+         _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, obj->BorderColor.f);
+         _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
+         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
+         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
+         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
+         _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
+         _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
+         _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
+         _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
+         _mesa_TexParameterf(target, GL_TEXTURE_LOD_BIAS, obj->LodBias);
+         _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
+         if (target != GL_TEXTURE_RECTANGLE_ARB)
+            _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
+         if (ctx->Extensions.EXT_texture_filter_anisotropic) {
+            _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
+                                obj->MaxAnisotropy);
+         }
+         if (ctx->Extensions.ARB_shadow_ambient) {
+            _mesa_TexParameterf(target, GL_TEXTURE_COMPARE_FAIL_VALUE_ARB,
+                                obj->CompareFailValue);
+         }
+      }
+
+      /* remove saved references to the texture objects */
+      for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
+         _mesa_reference_texobj(&texstate->SavedTexRef[u][tgt], NULL);
+      }
+   }
+
+   _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + texstate->Texture.CurrentUnit);
+
+   _mesa_unlock_context_textures(ctx);
+}
+
+
+/*
+ * This function is kind of long just because we have to call a lot
+ * of device driver functions to update device driver state.
+ *
+ * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
+ * in order to restore GL state.  This isn't terribly efficient but it
+ * ensures that dirty flags and any derived state gets updated correctly.
+ * We could at least check if the value to restore equals the current value
+ * and then skip the Mesa call.
+ */
+void GLAPIENTRY
+_mesa_PopAttrib(void)
+{
+   struct gl_attrib_node *attr, *next;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (ctx->AttribStackDepth == 0) {
+      _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
+      return;
+   }
+
+   ctx->AttribStackDepth--;
+   attr = ctx->AttribStack[ctx->AttribStackDepth];
+
+   while (attr) {
+
+      if (MESA_VERBOSE & VERBOSE_API) {
+         _mesa_debug(ctx, "glPopAttrib %s\n",
+                     _mesa_lookup_enum_by_nr(attr->kind));
+      }
+
+      switch (attr->kind) {
+         case GL_ACCUM_BUFFER_BIT:
+            {
+               const struct gl_accum_attrib *accum;
+               accum = (const struct gl_accum_attrib *) attr->data;
+               _mesa_ClearAccum(accum->ClearColor[0],
+                                accum->ClearColor[1],
+                                accum->ClearColor[2],
+                                accum->ClearColor[3]);
+            }
+            break;
+         case GL_COLOR_BUFFER_BIT:
+            {
+               const struct gl_colorbuffer_attrib *color;
+
+               color = (const struct gl_colorbuffer_attrib *) attr->data;
+               _mesa_ClearIndex((GLfloat) color->ClearIndex);
+               _mesa_ClearColor(color->ClearColor[0],
+                                color->ClearColor[1],
+                                color->ClearColor[2],
+                                color->ClearColor[3]);
+               _mesa_IndexMask(color->IndexMask);
+               if (!ctx->Extensions.EXT_draw_buffers2) {
+                  _mesa_ColorMask((GLboolean) (color->ColorMask[0][0] != 0),
+                                  (GLboolean) (color->ColorMask[0][1] != 0),
+                                  (GLboolean) (color->ColorMask[0][2] != 0),
+                                  (GLboolean) (color->ColorMask[0][3] != 0));
+               }
+               else {
+                  GLuint i;
+                  for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
+                     _mesa_ColorMaskIndexed(i, 
+                                  (GLboolean) (color->ColorMask[i][0] != 0),
+                                  (GLboolean) (color->ColorMask[i][1] != 0),
+                                  (GLboolean) (color->ColorMask[i][2] != 0),
+                                  (GLboolean) (color->ColorMask[i][3] != 0));
+                  }
+               }
+               {
+                  /* Need to determine if more than one color output is
+                   * specified.  If so, call glDrawBuffersARB, else call
+                   * glDrawBuffer().  This is a subtle, but essential point
+                   * since GL_FRONT (for example) is illegal for the former
+                   * function, but legal for the later.
+                   */
+                  GLboolean multipleBuffers = GL_FALSE;
+		  GLuint i;
+
+		  for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
+		     if (color->DrawBuffer[i] != GL_NONE) {
+			multipleBuffers = GL_TRUE;
+			break;
+		     }
+                  }
+                  /* Call the API_level functions, not _mesa_drawbuffers()
+                   * since we need to do error checking on the pop'd
+                   * GL_DRAW_BUFFER.
+                   * Ex: if GL_FRONT were pushed, but we're popping with a
+                   * user FBO bound, GL_FRONT will be illegal and we'll need
+                   * to record that error.  Per OpenGL ARB decision.
+                   */
+                  if (multipleBuffers)
+                     _mesa_DrawBuffersARB(ctx->Const.MaxDrawBuffers,
+                                          color->DrawBuffer);
+                  else
+                     _mesa_DrawBuffer(color->DrawBuffer[0]);
+               }
+               _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
+               _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef);
+               if (ctx->Color.BlendEnabled != color->BlendEnabled) {
+                  if (ctx->Extensions.EXT_draw_buffers2) {
+                     GLuint i;
+                     for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
+                        _mesa_set_enablei(ctx, GL_BLEND, i,
+                                          (color->BlendEnabled >> i) & 1);
+                     }
+                  }
+                  else {
+                     _mesa_set_enable(ctx, GL_BLEND, (color->BlendEnabled & 1));
+                  }
+               }
+               if (ctx->Color._BlendFuncPerBuffer ||
+                   ctx->Color._BlendEquationPerBuffer) {
+                  /* set blend per buffer */
+                  GLuint buf;
+                  for (buf = 0; buf < ctx->Const.MaxDrawBuffers; buf++) {
+                     _mesa_BlendFuncSeparatei(buf, color->Blend[buf].SrcRGB,
+                                              color->Blend[buf].DstRGB,
+                                              color->Blend[buf].SrcA,
+                                              color->Blend[buf].DstA);
+                     _mesa_BlendEquationSeparatei(buf,
+                                                  color->Blend[buf].EquationRGB,
+                                                  color->Blend[buf].EquationA);
+                  }
+               }
+               else {
+                  /* set same blend modes for all buffers */
+                  _mesa_BlendFuncSeparateEXT(color->Blend[0].SrcRGB,
+                                             color->Blend[0].DstRGB,
+                                             color->Blend[0].SrcA,
+                                             color->Blend[0].DstA);
+                  /* This special case is because glBlendEquationSeparateEXT
+                   * cannot take GL_LOGIC_OP as a parameter.
+                   */
+                  if (color->Blend[0].EquationRGB ==
+                      color->Blend[0].EquationA) {
+                     _mesa_BlendEquation(color->Blend[0].EquationRGB);
+                  }
+                  else {
+                     _mesa_BlendEquationSeparateEXT(
+                                                 color->Blend[0].EquationRGB,
+                                                 color->Blend[0].EquationA);
+                  }
+               }
+               _mesa_BlendColor(color->BlendColor[0],
+                                color->BlendColor[1],
+                                color->BlendColor[2],
+                                color->BlendColor[3]);
+               _mesa_LogicOp(color->LogicOp);
+               _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
+                                color->ColorLogicOpEnabled);
+               _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
+                                color->IndexLogicOpEnabled);
+               _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
+            }
+            break;
+         case GL_CURRENT_BIT:
+	    FLUSH_CURRENT( ctx, 0 );
+            memcpy( &ctx->Current, attr->data,
+		    sizeof(struct gl_current_attrib) );
+            break;
+         case GL_DEPTH_BUFFER_BIT:
+            {
+               const struct gl_depthbuffer_attrib *depth;
+               depth = (const struct gl_depthbuffer_attrib *) attr->data;
+               _mesa_DepthFunc(depth->Func);
+               _mesa_ClearDepth(depth->Clear);
+               _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
+               _mesa_DepthMask(depth->Mask);
+            }
+            break;
+         case GL_ENABLE_BIT:
+            {
+               const struct gl_enable_attrib *enable;
+               enable = (const struct gl_enable_attrib *) attr->data;
+               pop_enable_group(ctx, enable);
+	       ctx->NewState |= _NEW_ALL;
+            }
+            break;
+         case GL_EVAL_BIT:
+            memcpy( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
+	    ctx->NewState |= _NEW_EVAL;
+            break;
+         case GL_FOG_BIT:
+            {
+               const struct gl_fog_attrib *fog;
+               fog = (const struct gl_fog_attrib *) attr->data;
+               _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
+               _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
+               _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
+               _mesa_Fogf(GL_FOG_START, fog->Start);
+               _mesa_Fogf(GL_FOG_END, fog->End);
+               _mesa_Fogf(GL_FOG_INDEX, fog->Index);
+               _mesa_Fogi(GL_FOG_MODE, fog->Mode);
+            }
+            break;
+         case GL_HINT_BIT:
+            {
+               const struct gl_hint_attrib *hint;
+               hint = (const struct gl_hint_attrib *) attr->data;
+               _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
+                          hint->PerspectiveCorrection );
+               _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
+               _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
+               _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
+               _mesa_Hint(GL_FOG_HINT, hint->Fog);
+               _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
+                          hint->ClipVolumeClipping);
+	       _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
+			  hint->TextureCompression);
+            }
+            break;
+         case GL_LIGHTING_BIT:
+            {
+               GLuint i;
+               const struct gl_light_attrib *light;
+               light = (const struct gl_light_attrib *) attr->data;
+               /* lighting enable */
+               _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
+               /* per-light state */
+               if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
+                  _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
+	       
+               for (i = 0; i < ctx->Const.MaxLights; i++) {
+                  const struct gl_light *l = &light->Light[i];
+                  _mesa_set_enable(ctx, GL_LIGHT0 + i, l->Enabled);
+                  _mesa_light(ctx, i, GL_AMBIENT, l->Ambient);
+                  _mesa_light(ctx, i, GL_DIFFUSE, l->Diffuse);
+                  _mesa_light(ctx, i, GL_SPECULAR, l->Specular );
+                  _mesa_light(ctx, i, GL_POSITION, l->EyePosition);
+                  _mesa_light(ctx, i, GL_SPOT_DIRECTION, l->SpotDirection);
+                  {
+                     GLfloat p[4] = { 0 };
+                     p[0] = l->SpotExponent;
+                     _mesa_light(ctx, i, GL_SPOT_EXPONENT, p);
+                  }
+                  {
+                     GLfloat p[4] = { 0 };
+                     p[0] = l->SpotCutoff;
+                     _mesa_light(ctx, i, GL_SPOT_CUTOFF, p);
+                  }
+                  {
+                     GLfloat p[4] = { 0 };
+                     p[0] = l->ConstantAttenuation;
+                     _mesa_light(ctx, i, GL_CONSTANT_ATTENUATION, p);
+                  }
+                  {
+                     GLfloat p[4] = { 0 };
+                     p[0] = l->LinearAttenuation;
+                     _mesa_light(ctx, i, GL_LINEAR_ATTENUATION, p);
+                  }
+                  {
+                     GLfloat p[4] = { 0 };
+                     p[0] = l->QuadraticAttenuation;
+                     _mesa_light(ctx, i, GL_QUADRATIC_ATTENUATION, p);
+                  }
+                }
+               /* light model */
+               _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
+                                  light->Model.Ambient);
+               _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
+                                 (GLfloat) light->Model.LocalViewer);
+               _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
+                                 (GLfloat) light->Model.TwoSide);
+               _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
+                                 (GLfloat) light->Model.ColorControl);
+               /* shade model */
+               _mesa_ShadeModel(light->ShadeModel);
+               /* color material */
+               _mesa_ColorMaterial(light->ColorMaterialFace,
+                                   light->ColorMaterialMode);
+               _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
+                                light->ColorMaterialEnabled);
+               /* materials */
+               memcpy(&ctx->Light.Material, &light->Material,
+                      sizeof(struct gl_material));
+            }
+            break;
+         case GL_LINE_BIT:
+            {
+               const struct gl_line_attrib *line;
+               line = (const struct gl_line_attrib *) attr->data;
+               _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
+               _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
+               _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
+               _mesa_LineWidth(line->Width);
+            }
+            break;
+         case GL_LIST_BIT:
+            memcpy( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
+            break;
+         case GL_PIXEL_MODE_BIT:
+            memcpy( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
+            /* XXX what other pixel state needs to be set by function calls? */
+            _mesa_ReadBuffer(ctx->Pixel.ReadBuffer);
+	    ctx->NewState |= _NEW_PIXEL;
+            break;
+         case GL_POINT_BIT:
+            {
+               const struct gl_point_attrib *point;
+               point = (const struct gl_point_attrib *) attr->data;
+               _mesa_PointSize(point->Size);
+               _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
+               if (ctx->Extensions.EXT_point_parameters) {
+                  _mesa_PointParameterfv(GL_DISTANCE_ATTENUATION_EXT,
+                                         point->Params);
+                  _mesa_PointParameterf(GL_POINT_SIZE_MIN_EXT,
+                                        point->MinSize);
+                  _mesa_PointParameterf(GL_POINT_SIZE_MAX_EXT,
+                                        point->MaxSize);
+                  _mesa_PointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
+                                        point->Threshold);
+               }
+               if (ctx->Extensions.NV_point_sprite
+		   || ctx->Extensions.ARB_point_sprite) {
+                  GLuint u;
+                  for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+                     _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,
+                                   (GLint) point->CoordReplace[u]);
+                  }
+                  _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
+                  if (ctx->Extensions.NV_point_sprite)
+                     _mesa_PointParameteri(GL_POINT_SPRITE_R_MODE_NV,
+                                           ctx->Point.SpriteRMode);
+                  _mesa_PointParameterf(GL_POINT_SPRITE_COORD_ORIGIN,
+                                        (GLfloat)ctx->Point.SpriteOrigin);
+               }
+            }
+            break;
+         case GL_POLYGON_BIT:
+            {
+               const struct gl_polygon_attrib *polygon;
+               polygon = (const struct gl_polygon_attrib *) attr->data;
+               _mesa_CullFace(polygon->CullFaceMode);
+               _mesa_FrontFace(polygon->FrontFace);
+               _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
+               _mesa_PolygonMode(GL_BACK, polygon->BackMode);
+               _mesa_PolygonOffset(polygon->OffsetFactor,
+                                   polygon->OffsetUnits);
+               _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
+               _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
+               _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
+               _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
+                                polygon->OffsetPoint);
+               _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
+                                polygon->OffsetLine);
+               _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
+                                polygon->OffsetFill);
+            }
+            break;
+	 case GL_POLYGON_STIPPLE_BIT:
+	    memcpy( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
+	    ctx->NewState |= _NEW_POLYGONSTIPPLE;
+	    if (ctx->Driver.PolygonStipple)
+	       ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
+	    break;
+         case GL_SCISSOR_BIT:
+            {
+               const struct gl_scissor_attrib *scissor;
+               scissor = (const struct gl_scissor_attrib *) attr->data;
+               _mesa_Scissor(scissor->X, scissor->Y,
+                             scissor->Width, scissor->Height);
+               _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
+            }
+            break;
+         case GL_STENCIL_BUFFER_BIT:
+            {
+               const struct gl_stencil_attrib *stencil;
+               stencil = (const struct gl_stencil_attrib *) attr->data;
+               _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
+               _mesa_ClearStencil(stencil->Clear);
+               if (ctx->Extensions.EXT_stencil_two_side) {
+                  _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,
+                                   stencil->TestTwoSide);
+                  _mesa_ActiveStencilFaceEXT(stencil->ActiveFace
+                                             ? GL_BACK : GL_FRONT);
+               }
+               /* front state */
+               _mesa_StencilFuncSeparate(GL_FRONT,
+                                         stencil->Function[0],
+                                         stencil->Ref[0],
+                                         stencil->ValueMask[0]);
+               _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);
+               _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],
+                                       stencil->ZFailFunc[0],
+                                       stencil->ZPassFunc[0]);
+               /* back state */
+               _mesa_StencilFuncSeparate(GL_BACK,
+                                         stencil->Function[1],
+                                         stencil->Ref[1],
+                                         stencil->ValueMask[1]);
+               _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);
+               _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],
+                                       stencil->ZFailFunc[1],
+                                       stencil->ZPassFunc[1]);
+            }
+            break;
+         case GL_TRANSFORM_BIT:
+            {
+               GLuint i;
+               const struct gl_transform_attrib *xform;
+               xform = (const struct gl_transform_attrib *) attr->data;
+               _mesa_MatrixMode(xform->MatrixMode);
+               if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
+                  _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
+
+               /* restore clip planes */
+               for (i = 0; i < MAX_CLIP_PLANES; i++) {
+                  const GLuint mask = 1 << i;
+                  const GLfloat *eyePlane = xform->EyeUserPlane[i];
+                  COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
+                  if (xform->ClipPlanesEnabled & mask) {
+                     _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
+                  }
+                  else {
+                     _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
+                  }
+                  if (ctx->Driver.ClipPlane)
+                     ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
+               }
+
+               /* normalize/rescale */
+               if (xform->Normalize != ctx->Transform.Normalize)
+                  _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
+               if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
+                  _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
+                                   ctx->Transform.RescaleNormals);
+               if (xform->DepthClamp != ctx->Transform.DepthClamp)
+                  _mesa_set_enable(ctx, GL_DEPTH_CLAMP,
+                                   ctx->Transform.DepthClamp);
+            }
+            break;
+         case GL_TEXTURE_BIT:
+            /* Take care of texture object reference counters */
+            {
+               struct texture_state *texstate
+                  = (struct texture_state *) attr->data;
+               pop_texture_group(ctx, texstate);
+	       ctx->NewState |= _NEW_TEXTURE;
+            }
+            break;
+         case GL_VIEWPORT_BIT:
+            {
+               const struct gl_viewport_attrib *vp;
+               vp = (const struct gl_viewport_attrib *) attr->data;
+               _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
+               _mesa_DepthRange(vp->Near, vp->Far);
+            }
+            break;
+         case GL_MULTISAMPLE_BIT_ARB:
+            {
+               const struct gl_multisample_attrib *ms;
+               ms = (const struct gl_multisample_attrib *) attr->data;
+               _mesa_SampleCoverageARB(ms->SampleCoverageValue,
+                                       ms->SampleCoverageInvert);
+            }
+            break;
+
+         default:
+            _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
+            break;
+      }
+
+      next = attr->next;
+      FREE( attr->data );
+      FREE( attr );
+      attr = next;
+   }
+}
+
+
+/**
+ * Helper for incrementing/decrementing vertex buffer object reference
+ * counts when pushing/popping the GL_CLIENT_VERTEX_ARRAY_BIT attribute group.
+ */
+static void
+adjust_buffer_object_ref_counts(struct gl_array_object *arrayObj, GLint step)
+{
+   GLuint i;
+
+   arrayObj->Vertex.BufferObj->RefCount += step;
+   arrayObj->Weight.BufferObj->RefCount += step;
+   arrayObj->Normal.BufferObj->RefCount += step;
+   arrayObj->Color.BufferObj->RefCount += step;
+   arrayObj->SecondaryColor.BufferObj->RefCount += step;
+   arrayObj->FogCoord.BufferObj->RefCount += step;
+   arrayObj->Index.BufferObj->RefCount += step;
+   arrayObj->EdgeFlag.BufferObj->RefCount += step;
+   for (i = 0; i < Elements(arrayObj->TexCoord); i++)
+      arrayObj->TexCoord[i].BufferObj->RefCount += step;
+   for (i = 0; i < Elements(arrayObj->VertexAttrib); i++)
+      arrayObj->VertexAttrib[i].BufferObj->RefCount += step;
+}
+
+
+/**
+ * Copy gl_pixelstore_attrib from src to dst, updating buffer
+ * object refcounts.
+ */
+static void
+copy_pixelstore(struct gl_context *ctx,
+                struct gl_pixelstore_attrib *dst,
+                const struct gl_pixelstore_attrib *src)
+{
+   dst->Alignment = src->Alignment;
+   dst->RowLength = src->RowLength;
+   dst->SkipPixels = src->SkipPixels;
+   dst->SkipRows = src->SkipRows;
+   dst->ImageHeight = src->ImageHeight;
+   dst->SkipImages = src->SkipImages;
+   dst->SwapBytes = src->SwapBytes;
+   dst->LsbFirst = src->LsbFirst;
+   dst->ClientStorage = src->ClientStorage;
+   dst->Invert = src->Invert;
+   _mesa_reference_buffer_object(ctx, &dst->BufferObj, src->BufferObj);
+}
+
+
+#define GL_CLIENT_PACK_BIT (1<<20)
+#define GL_CLIENT_UNPACK_BIT (1<<21)
+
+
+void GLAPIENTRY
+_mesa_PushClientAttrib(GLbitfield mask)
+{
+   struct gl_attrib_node *head;
+
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
+      _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
+      return;
+   }
+
+   /* Build linked list of attribute nodes which save all attribute
+    * groups specified by the mask.
+    */
+   head = NULL;
+
+   if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
+      struct gl_pixelstore_attrib *attr;
+      /* packing attribs */
+      attr = CALLOC_STRUCT( gl_pixelstore_attrib );
+      copy_pixelstore(ctx, attr, &ctx->Pack);
+      save_attrib_data(&head, GL_CLIENT_PACK_BIT, attr);
+      /* unpacking attribs */
+      attr = CALLOC_STRUCT( gl_pixelstore_attrib );
+      copy_pixelstore(ctx, attr, &ctx->Unpack);
+      save_attrib_data(&head, GL_CLIENT_UNPACK_BIT, attr);
+   }
+
+   if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
+      struct gl_array_attrib *attr;
+      struct gl_array_object *obj;
+
+      attr = MALLOC_STRUCT( gl_array_attrib );
+      obj = MALLOC_STRUCT( gl_array_object );
+
+#if FEATURE_ARB_vertex_buffer_object
+      /* increment ref counts since we're copying pointers to these objects */
+      ctx->Array.ArrayBufferObj->RefCount++;
+      ctx->Array.ElementArrayBufferObj->RefCount++;
+#endif
+
+      memcpy( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
+      memcpy( obj, ctx->Array.ArrayObj, sizeof(struct gl_array_object) );
+
+      attr->ArrayObj = obj;
+
+      save_attrib_data(&head, GL_CLIENT_VERTEX_ARRAY_BIT, attr);
+
+      /* bump reference counts on buffer objects */
+      adjust_buffer_object_ref_counts(ctx->Array.ArrayObj, 1);
+   }
+
+   ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
+   ctx->ClientAttribStackDepth++;
+}
+
+
+
+
+void GLAPIENTRY
+_mesa_PopClientAttrib(void)
+{
+   struct gl_attrib_node *node, *next;
+
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (ctx->ClientAttribStackDepth == 0) {
+      _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
+      return;
+   }
+
+   ctx->ClientAttribStackDepth--;
+   node = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
+
+   while (node) {
+      switch (node->kind) {
+         case GL_CLIENT_PACK_BIT:
+            {
+               struct gl_pixelstore_attrib *store =
+                  (struct gl_pixelstore_attrib *) node->data;
+               copy_pixelstore(ctx, &ctx->Pack, store);
+               _mesa_reference_buffer_object(ctx, &store->BufferObj, NULL);
+            }
+	    ctx->NewState |= _NEW_PACKUNPACK;
+            break;
+         case GL_CLIENT_UNPACK_BIT:
+            {
+               struct gl_pixelstore_attrib *store =
+                  (struct gl_pixelstore_attrib *) node->data;
+               copy_pixelstore(ctx, &ctx->Unpack, store);
+               _mesa_reference_buffer_object(ctx, &store->BufferObj, NULL);
+            }
+	    ctx->NewState |= _NEW_PACKUNPACK;
+            break;
+         case GL_CLIENT_VERTEX_ARRAY_BIT: {
+	    struct gl_array_attrib * data =
+	      (struct gl_array_attrib *) node->data;
+
+            adjust_buffer_object_ref_counts(ctx->Array.ArrayObj, -1);
+	 
+            ctx->Array.ActiveTexture = data->ActiveTexture;
+	    if (data->LockCount != 0)
+	       _mesa_LockArraysEXT(data->LockFirst, data->LockCount);
+	    else if (ctx->Array.LockCount)
+	       _mesa_UnlockArraysEXT();
+
+	    _mesa_BindVertexArrayAPPLE( data->ArrayObj->Name );
+	    
+#if FEATURE_ARB_vertex_buffer_object
+            _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB,
+                                data->ArrayBufferObj->Name);
+            _mesa_BindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB,
+                                data->ElementArrayBufferObj->Name);
+#endif
+
+	    memcpy( ctx->Array.ArrayObj, data->ArrayObj,
+		    sizeof( struct gl_array_object ) );
+
+	    FREE( data->ArrayObj );
+	    
+	    /* FIXME: Should some bits in ctx->Array->NewState also be set
+	     * FIXME: here?  It seems like it should be set to inclusive-or
+	     * FIXME: of the old ArrayObj->_Enabled and the new _Enabled.
+	     */
+
+	    ctx->NewState |= _NEW_ARRAY;
+            break;
+	 }
+         default:
+            _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
+            break;
+      }
+
+      next = node->next;
+      FREE( node->data );
+      FREE( node );
+      node = next;
+   }
+}
+
+
+void
+_mesa_init_attrib_dispatch(struct _glapi_table *disp)
+{
+   SET_PopAttrib(disp, _mesa_PopAttrib);
+   SET_PushAttrib(disp, _mesa_PushAttrib);
+   SET_PopClientAttrib(disp, _mesa_PopClientAttrib);
+   SET_PushClientAttrib(disp, _mesa_PushClientAttrib);
+}
+
+
+#endif /* FEATURE_attrib_stack */
+
+
+/**
+ * Free any attribute state data that might be attached to the context.
+ */
+void
+_mesa_free_attrib_data(struct gl_context *ctx)
+{
+   while (ctx->AttribStackDepth > 0) {
+      struct gl_attrib_node *attr, *next;
+
+      ctx->AttribStackDepth--;
+      attr = ctx->AttribStack[ctx->AttribStackDepth];
+
+      while (attr) {
+         if (attr->kind == GL_TEXTURE_BIT) {
+            struct texture_state *texstate = (struct texture_state*)attr->data;
+            GLuint u, tgt;
+            /* clear references to the saved texture objects */
+            for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+               for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
+                  _mesa_reference_texobj(&texstate->SavedTexRef[u][tgt], NULL);
+               }
+            }
+         }
+         else {
+            /* any other chunks of state that requires special handling? */
+         }
+
+         next = attr->next;
+         free(attr->data);
+         free(attr);
+         attr = next;
+      }
+   }
+}
+
+
+void _mesa_init_attrib( struct gl_context *ctx )
+{
+   /* Renderer and client attribute stacks */
+   ctx->AttribStackDepth = 0;
+   ctx->ClientAttribStackDepth = 0;
+}
diff --git a/mesalib/src/mesa/main/bufferobj.c b/mesalib/src/mesa/main/bufferobj.c
index 75afae0ad..35d92616f 100644
--- a/mesalib/src/mesa/main/bufferobj.c
+++ b/mesalib/src/mesa/main/bufferobj.c
@@ -658,248 +658,6 @@ _mesa_update_default_objects_buffer_objects(struct gl_context *ctx)
 }
 
 
-/**
- * When we're about to read pixel data out of a PBO (via glDrawPixels,
- * glTexImage, etc) or write data into a PBO (via glReadPixels,
- * glGetTexImage, etc) we call this function to check that we're not
- * going to read out of bounds.
- *
- * XXX This would also be a convenient time to check that the PBO isn't
- * currently mapped.  Whoever calls this function should check for that.
- * Remember, we can't use a PBO when it's mapped!
- *
- * If we're not using a PBO, this is a no-op.
- *
- * \param width  width of image to read/write
- * \param height  height of image to read/write
- * \param depth  depth of image to read/write
- * \param format  format of image to read/write
- * \param type  datatype of image to read/write
- * \param ptr  the user-provided pointer/offset
- * \return GL_TRUE if the PBO access is OK, GL_FALSE if the access would
- *         go out of bounds.
- */
-GLboolean
-_mesa_validate_pbo_access(GLuint dimensions,
-                          const struct gl_pixelstore_attrib *pack,
-                          GLsizei width, GLsizei height, GLsizei depth,
-                          GLenum format, GLenum type, const GLvoid *ptr)
-{
-   GLvoid *start, *end;
-   const GLubyte *sizeAddr; /* buffer size, cast to a pointer */
-
-   if (!_mesa_is_bufferobj(pack->BufferObj))
-      return GL_TRUE;  /* no PBO, OK */
-
-   if (pack->BufferObj->Size == 0)
-      /* no buffer! */
-      return GL_FALSE;
-
-   /* get address of first pixel we'll read */
-   start = _mesa_image_address(dimensions, pack, ptr, width, height,
-                               format, type, 0, 0, 0);
-
-   /* get address just past the last pixel we'll read */
-   end =  _mesa_image_address(dimensions, pack, ptr, width, height,
-                              format, type, depth-1, height-1, width);
-
-
-   sizeAddr = ((const GLubyte *) 0) + pack->BufferObj->Size;
-
-   if ((const GLubyte *) start > sizeAddr) {
-      /* This will catch negative values / wrap-around */
-      return GL_FALSE;
-   }
-   if ((const GLubyte *) end > sizeAddr) {
-      /* Image read goes beyond end of buffer */
-      return GL_FALSE;
-   }
-
-   /* OK! */
-   return GL_TRUE;
-}
-
-
-/**
- * For commands that read from a PBO (glDrawPixels, glTexImage,
- * glPolygonStipple, etc), if we're reading from a PBO, map it read-only
- * and return the pointer into the PBO.  If we're not reading from a
- * PBO, return \p src as-is.
- * If non-null return, must call _mesa_unmap_pbo_source() when done.
- *
- * \return NULL if error, else pointer to start of data
- */
-const GLvoid *
-_mesa_map_pbo_source(struct gl_context *ctx,
-                     const struct gl_pixelstore_attrib *unpack,
-                     const GLvoid *src)
-{
-   const GLubyte *buf;
-
-   if (_mesa_is_bufferobj(unpack->BufferObj)) {
-      /* unpack from PBO */
-      buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
-                                              GL_READ_ONLY_ARB,
-                                              unpack->BufferObj);
-      if (!buf)
-         return NULL;
-
-      buf = ADD_POINTERS(buf, src);
-   }
-   else {
-      /* unpack from normal memory */
-      buf = src;
-   }
-
-   return buf;
-}
-
-
-/**
- * Combine PBO-read validation and mapping.
- * If any GL errors are detected, they'll be recorded and NULL returned.
- * \sa _mesa_validate_pbo_access
- * \sa _mesa_map_pbo_source
- * A call to this function should have a matching call to
- * _mesa_unmap_pbo_source().
- */
-const GLvoid *
-_mesa_map_validate_pbo_source(struct gl_context *ctx,
-                              GLuint dimensions,
-                              const struct gl_pixelstore_attrib *unpack,
-                              GLsizei width, GLsizei height, GLsizei depth,
-                              GLenum format, GLenum type, const GLvoid *ptr,
-                              const char *where)
-{
-   ASSERT(dimensions == 1 || dimensions == 2 || dimensions == 3);
-
-   if (!_mesa_is_bufferobj(unpack->BufferObj)) {
-      /* non-PBO access: no validation to be done */
-      return ptr;
-   }
-
-   if (!_mesa_validate_pbo_access(dimensions, unpack,
-                                  width, height, depth, format, type, ptr)) {
-      _mesa_error(ctx, GL_INVALID_OPERATION,
-                  "%s(out of bounds PBO access)", where);
-      return NULL;
-   }
-
-   if (_mesa_bufferobj_mapped(unpack->BufferObj)) {
-      /* buffer is already mapped - that's an error */
-      _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where);
-      return NULL;
-   }
-
-   ptr = _mesa_map_pbo_source(ctx, unpack, ptr);
-   return ptr;
-}
-
-
-/**
- * Counterpart to _mesa_map_pbo_source()
- */
-void
-_mesa_unmap_pbo_source(struct gl_context *ctx,
-                       const struct gl_pixelstore_attrib *unpack)
-{
-   ASSERT(unpack != &ctx->Pack); /* catch pack/unpack mismatch */
-   if (_mesa_is_bufferobj(unpack->BufferObj)) {
-      ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
-                              unpack->BufferObj);
-   }
-}
-
-
-/**
- * For commands that write to a PBO (glReadPixels, glGetColorTable, etc),
- * if we're writing to a PBO, map it write-only and return the pointer
- * into the PBO.  If we're not writing to a PBO, return \p dst as-is.
- * If non-null return, must call _mesa_unmap_pbo_dest() when done.
- *
- * \return NULL if error, else pointer to start of data
- */
-void *
-_mesa_map_pbo_dest(struct gl_context *ctx,
-                   const struct gl_pixelstore_attrib *pack,
-                   GLvoid *dest)
-{
-   void *buf;
-
-   if (_mesa_is_bufferobj(pack->BufferObj)) {
-      /* pack into PBO */
-      buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
-                                              GL_WRITE_ONLY_ARB,
-                                              pack->BufferObj);
-      if (!buf)
-         return NULL;
-
-      buf = ADD_POINTERS(buf, dest);
-   }
-   else {
-      /* pack to normal memory */
-      buf = dest;
-   }
-
-   return buf;
-}
-
-
-/**
- * Combine PBO-write validation and mapping.
- * If any GL errors are detected, they'll be recorded and NULL returned.
- * \sa _mesa_validate_pbo_access
- * \sa _mesa_map_pbo_dest
- * A call to this function should have a matching call to
- * _mesa_unmap_pbo_dest().
- */
-GLvoid *
-_mesa_map_validate_pbo_dest(struct gl_context *ctx,
-                            GLuint dimensions,
-                            const struct gl_pixelstore_attrib *unpack,
-                            GLsizei width, GLsizei height, GLsizei depth,
-                            GLenum format, GLenum type, GLvoid *ptr,
-                            const char *where)
-{
-   ASSERT(dimensions == 1 || dimensions == 2 || dimensions == 3);
-
-   if (!_mesa_is_bufferobj(unpack->BufferObj)) {
-      /* non-PBO access: no validation to be done */
-      return ptr;
-   }
-
-   if (!_mesa_validate_pbo_access(dimensions, unpack,
-                                  width, height, depth, format, type, ptr)) {
-      _mesa_error(ctx, GL_INVALID_OPERATION,
-                  "%s(out of bounds PBO access)", where);
-      return NULL;
-   }
-
-   if (_mesa_bufferobj_mapped(unpack->BufferObj)) {
-      /* buffer is already mapped - that's an error */
-      _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where);
-      return NULL;
-   }
-
-   ptr = _mesa_map_pbo_dest(ctx, unpack, ptr);
-   return ptr;
-}
-
-
-/**
- * Counterpart to _mesa_map_pbo_dest()
- */
-void
-_mesa_unmap_pbo_dest(struct gl_context *ctx,
-                     const struct gl_pixelstore_attrib *pack)
-{
-   ASSERT(pack != &ctx->Unpack); /* catch pack/unpack mismatch */
-   if (_mesa_is_bufferobj(pack->BufferObj)) {
-      ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, pack->BufferObj);
-   }
-}
-
-
 
 /**
  * Return the gl_buffer_object for the given ID.
diff --git a/mesalib/src/mesa/main/bufferobj.h b/mesalib/src/mesa/main/bufferobj.h
index cf43ad9a2..91fa073b6 100644
--- a/mesalib/src/mesa/main/bufferobj.h
+++ b/mesalib/src/mesa/main/bufferobj.h
@@ -1,190 +1,149 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.6

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-

-#ifndef BUFFEROBJ_H

-#define BUFFEROBJ_H

-

-

-#include "mfeatures.h"

-#include "mtypes.h"

-

-

-/*

- * Internal functions

- */

-

-

-/** Is the given buffer object currently mapped? */

-static INLINE GLboolean

-_mesa_bufferobj_mapped(const struct gl_buffer_object *obj)

-{

-   return obj->Pointer != NULL;

-}

-

-/**

- * Is the given buffer object a user-created buffer object?

- * Mesa uses default buffer objects in several places.  Default buffers

- * always have Name==0.  User created buffers have Name!=0.

- */

-static INLINE GLboolean

-_mesa_is_bufferobj(const struct gl_buffer_object *obj)

-{

-   return obj->Name != 0;

-}

-

-

-extern void

-_mesa_init_buffer_objects( struct gl_context *ctx );

-

-extern void

-_mesa_free_buffer_objects( struct gl_context *ctx );

-

-extern void

-_mesa_update_default_objects_buffer_objects(struct gl_context *ctx);

-

-

-extern struct gl_buffer_object *

-_mesa_lookup_bufferobj(struct gl_context *ctx, GLuint buffer);

-

-extern void

-_mesa_initialize_buffer_object( struct gl_buffer_object *obj,

-				GLuint name, GLenum target );

-

-extern void

-_mesa_reference_buffer_object(struct gl_context *ctx,

-                              struct gl_buffer_object **ptr,

-                              struct gl_buffer_object *bufObj);

-

-extern GLboolean

-_mesa_validate_pbo_access(GLuint dimensions,

-                          const struct gl_pixelstore_attrib *pack,

-                          GLsizei width, GLsizei height, GLsizei depth,

-                          GLenum format, GLenum type, const GLvoid *ptr);

-

-extern const GLvoid *

-_mesa_map_pbo_source(struct gl_context *ctx,

-                     const struct gl_pixelstore_attrib *unpack,

-                     const GLvoid *src);

-

-extern const GLvoid *

-_mesa_map_validate_pbo_source(struct gl_context *ctx,

-                              GLuint dimensions,

-                              const struct gl_pixelstore_attrib *unpack,

-                              GLsizei width, GLsizei height, GLsizei depth,

-                              GLenum format, GLenum type, const GLvoid *ptr,

-                              const char *where);

-

-extern void

-_mesa_unmap_pbo_source(struct gl_context *ctx,

-                       const struct gl_pixelstore_attrib *unpack);

-

-extern void *

-_mesa_map_pbo_dest(struct gl_context *ctx,

-                   const struct gl_pixelstore_attrib *pack,

-                   GLvoid *dest);

-

-extern GLvoid *

-_mesa_map_validate_pbo_dest(struct gl_context *ctx,

-                            GLuint dimensions,

-                            const struct gl_pixelstore_attrib *unpack,

-                            GLsizei width, GLsizei height, GLsizei depth,

-                            GLenum format, GLenum type, GLvoid *ptr,

-                            const char *where);

-

-extern void

-_mesa_unmap_pbo_dest(struct gl_context *ctx,

-                     const struct gl_pixelstore_attrib *pack);

-

-

-extern void

-_mesa_init_buffer_object_functions(struct dd_function_table *driver);

-

-

-/*

- * API functions

- */

-

-extern void GLAPIENTRY

-_mesa_BindBufferARB(GLenum target, GLuint buffer);

-

-extern void GLAPIENTRY

-_mesa_DeleteBuffersARB(GLsizei n, const GLuint * buffer);

-

-extern void GLAPIENTRY

-_mesa_GenBuffersARB(GLsizei n, GLuint * buffer);

-

-extern GLboolean GLAPIENTRY

-_mesa_IsBufferARB(GLuint buffer);

-

-extern void GLAPIENTRY

-_mesa_BufferDataARB(GLenum target, GLsizeiptrARB size, const GLvoid * data, GLenum usage);

-

-extern void GLAPIENTRY

-_mesa_BufferSubDataARB(GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid * data);

-

-extern void GLAPIENTRY

-_mesa_GetBufferSubDataARB(GLenum target, GLintptrARB offset, GLsizeiptrARB size, void * data);

-

-extern void * GLAPIENTRY

-_mesa_MapBufferARB(GLenum target, GLenum access);

-

-extern GLboolean GLAPIENTRY

-_mesa_UnmapBufferARB(GLenum target);

-

-extern void GLAPIENTRY

-_mesa_GetBufferParameterivARB(GLenum target, GLenum pname, GLint *params);

-

-extern void GLAPIENTRY

-_mesa_GetBufferParameteri64v(GLenum target, GLenum pname, GLint64 *params);

-

-extern void GLAPIENTRY

-_mesa_GetBufferPointervARB(GLenum target, GLenum pname, GLvoid **params);

-

-extern void GLAPIENTRY

-_mesa_CopyBufferSubData(GLenum readTarget, GLenum writeTarget,

-                        GLintptr readOffset, GLintptr writeOffset,

-                        GLsizeiptr size);

-

-extern void * GLAPIENTRY

-_mesa_MapBufferRange(GLenum target, GLintptr offset, GLsizeiptr length,

-                     GLbitfield access);

-

-extern void GLAPIENTRY

-_mesa_FlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length);

-

-#if FEATURE_APPLE_object_purgeable

-extern GLenum GLAPIENTRY

-_mesa_ObjectPurgeableAPPLE(GLenum objectType, GLuint name, GLenum option);

-

-extern GLenum GLAPIENTRY

-_mesa_ObjectUnpurgeableAPPLE(GLenum objectType, GLuint name, GLenum option);

-

-extern void GLAPIENTRY

-_mesa_GetObjectParameterivAPPLE(GLenum objectType, GLuint name, GLenum pname, GLint* params);

-#endif

-

-#endif

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.6
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+
+#ifndef BUFFEROBJ_H
+#define BUFFEROBJ_H
+
+
+#include "mfeatures.h"
+#include "mtypes.h"
+
+
+/*
+ * Internal functions
+ */
+
+
+/** Is the given buffer object currently mapped? */
+static INLINE GLboolean
+_mesa_bufferobj_mapped(const struct gl_buffer_object *obj)
+{
+   return obj->Pointer != NULL;
+}
+
+/**
+ * Is the given buffer object a user-created buffer object?
+ * Mesa uses default buffer objects in several places.  Default buffers
+ * always have Name==0.  User created buffers have Name!=0.
+ */
+static INLINE GLboolean
+_mesa_is_bufferobj(const struct gl_buffer_object *obj)
+{
+   return obj->Name != 0;
+}
+
+
+extern void
+_mesa_init_buffer_objects( struct gl_context *ctx );
+
+extern void
+_mesa_free_buffer_objects( struct gl_context *ctx );
+
+extern void
+_mesa_update_default_objects_buffer_objects(struct gl_context *ctx);
+
+
+extern struct gl_buffer_object *
+_mesa_lookup_bufferobj(struct gl_context *ctx, GLuint buffer);
+
+extern void
+_mesa_initialize_buffer_object( struct gl_buffer_object *obj,
+				GLuint name, GLenum target );
+
+extern void
+_mesa_reference_buffer_object(struct gl_context *ctx,
+                              struct gl_buffer_object **ptr,
+                              struct gl_buffer_object *bufObj);
+
+extern void
+_mesa_init_buffer_object_functions(struct dd_function_table *driver);
+
+
+/*
+ * API functions
+ */
+
+extern void GLAPIENTRY
+_mesa_BindBufferARB(GLenum target, GLuint buffer);
+
+extern void GLAPIENTRY
+_mesa_DeleteBuffersARB(GLsizei n, const GLuint * buffer);
+
+extern void GLAPIENTRY
+_mesa_GenBuffersARB(GLsizei n, GLuint * buffer);
+
+extern GLboolean GLAPIENTRY
+_mesa_IsBufferARB(GLuint buffer);
+
+extern void GLAPIENTRY
+_mesa_BufferDataARB(GLenum target, GLsizeiptrARB size, const GLvoid * data, GLenum usage);
+
+extern void GLAPIENTRY
+_mesa_BufferSubDataARB(GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid * data);
+
+extern void GLAPIENTRY
+_mesa_GetBufferSubDataARB(GLenum target, GLintptrARB offset, GLsizeiptrARB size, void * data);
+
+extern void * GLAPIENTRY
+_mesa_MapBufferARB(GLenum target, GLenum access);
+
+extern GLboolean GLAPIENTRY
+_mesa_UnmapBufferARB(GLenum target);
+
+extern void GLAPIENTRY
+_mesa_GetBufferParameterivARB(GLenum target, GLenum pname, GLint *params);
+
+extern void GLAPIENTRY
+_mesa_GetBufferParameteri64v(GLenum target, GLenum pname, GLint64 *params);
+
+extern void GLAPIENTRY
+_mesa_GetBufferPointervARB(GLenum target, GLenum pname, GLvoid **params);
+
+extern void GLAPIENTRY
+_mesa_CopyBufferSubData(GLenum readTarget, GLenum writeTarget,
+                        GLintptr readOffset, GLintptr writeOffset,
+                        GLsizeiptr size);
+
+extern void * GLAPIENTRY
+_mesa_MapBufferRange(GLenum target, GLintptr offset, GLsizeiptr length,
+                     GLbitfield access);
+
+extern void GLAPIENTRY
+_mesa_FlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length);
+
+#if FEATURE_APPLE_object_purgeable
+extern GLenum GLAPIENTRY
+_mesa_ObjectPurgeableAPPLE(GLenum objectType, GLuint name, GLenum option);
+
+extern GLenum GLAPIENTRY
+_mesa_ObjectUnpurgeableAPPLE(GLenum objectType, GLuint name, GLenum option);
+
+extern void GLAPIENTRY
+_mesa_GetObjectParameterivAPPLE(GLenum objectType, GLuint name, GLenum pname, GLint* params);
+#endif
+
+#endif
diff --git a/mesalib/src/mesa/main/colortab.c b/mesalib/src/mesa/main/colortab.c
index 9c23e253b..d0c865735 100644
--- a/mesalib/src/mesa/main/colortab.c
+++ b/mesalib/src/mesa/main/colortab.c
@@ -1,934 +1,821 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.1

- *

- * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-#include "glheader.h"

-#include "bufferobj.h"

-#include "colortab.h"

-#include "context.h"

-#include "image.h"

-#include "macros.h"

-#include "mfeatures.h"

-#include "mtypes.h"

-#include "pack.h"

-#include "state.h"

-#include "teximage.h"

-#include "texstate.h"

-#include "main/dispatch.h"

-

-

-#if FEATURE_colortable

-

-

-/**

- * Given an internalFormat token passed to glColorTable,

- * return the corresponding base format.

- * Return -1 if invalid token.

- */

-static GLint

-base_colortab_format( GLenum format )

-{

-   switch (format) {

-      case GL_ALPHA:

-      case GL_ALPHA4:

-      case GL_ALPHA8:

-      case GL_ALPHA12:

-      case GL_ALPHA16:

-         return GL_ALPHA;

-      case GL_LUMINANCE:

-      case GL_LUMINANCE4:

-      case GL_LUMINANCE8:

-      case GL_LUMINANCE12:

-      case GL_LUMINANCE16:

-         return GL_LUMINANCE;

-      case GL_LUMINANCE_ALPHA:

-      case GL_LUMINANCE4_ALPHA4:

-      case GL_LUMINANCE6_ALPHA2:

-      case GL_LUMINANCE8_ALPHA8:

-      case GL_LUMINANCE12_ALPHA4:

-      case GL_LUMINANCE12_ALPHA12:

-      case GL_LUMINANCE16_ALPHA16:

-         return GL_LUMINANCE_ALPHA;

-      case GL_INTENSITY:

-      case GL_INTENSITY4:

-      case GL_INTENSITY8:

-      case GL_INTENSITY12:

-      case GL_INTENSITY16:

-         return GL_INTENSITY;

-      case GL_RGB:

-      case GL_R3_G3_B2:

-      case GL_RGB4:

-      case GL_RGB5:

-      case GL_RGB8:

-      case GL_RGB10:

-      case GL_RGB12:

-      case GL_RGB16:

-         return GL_RGB;

-      case GL_RGBA:

-      case GL_RGBA2:

-      case GL_RGBA4:

-      case GL_RGB5_A1:

-      case GL_RGBA8:

-      case GL_RGB10_A2:

-      case GL_RGBA12:

-      case GL_RGBA16:

-         return GL_RGBA;

-      default:

-         return -1;  /* error */

-   }

-}

-

-

-

-/**

- * Examine table's format and set the component sizes accordingly.

- */

-static void

-set_component_sizes( struct gl_color_table *table )

-{

-   /* assuming the ubyte table */

-   const GLubyte sz = 8;

-

-   switch (table->_BaseFormat) {

-      case GL_ALPHA:

-         table->RedSize = 0;

-         table->GreenSize = 0;

-         table->BlueSize = 0;

-         table->AlphaSize = sz;

-         table->IntensitySize = 0;

-         table->LuminanceSize = 0;

-         break;

-      case GL_LUMINANCE:

-         table->RedSize = 0;

-         table->GreenSize = 0;

-         table->BlueSize = 0;

-         table->AlphaSize = 0;

-         table->IntensitySize = 0;

-         table->LuminanceSize = sz;

-         break;

-      case GL_LUMINANCE_ALPHA:

-         table->RedSize = 0;

-         table->GreenSize = 0;

-         table->BlueSize = 0;

-         table->AlphaSize = sz;

-         table->IntensitySize = 0;

-         table->LuminanceSize = sz;

-         break;

-      case GL_INTENSITY:

-         table->RedSize = 0;

-         table->GreenSize = 0;

-         table->BlueSize = 0;

-         table->AlphaSize = 0;

-         table->IntensitySize = sz;

-         table->LuminanceSize = 0;

-         break;

-      case GL_RGB:

-         table->RedSize = sz;

-         table->GreenSize = sz;

-         table->BlueSize = sz;

-         table->AlphaSize = 0;

-         table->IntensitySize = 0;

-         table->LuminanceSize = 0;

-         break;

-      case GL_RGBA:

-         table->RedSize = sz;

-         table->GreenSize = sz;

-         table->BlueSize = sz;

-         table->AlphaSize = sz;

-         table->IntensitySize = 0;

-         table->LuminanceSize = 0;

-         break;

-      default:

-         _mesa_problem(NULL, "unexpected format in set_component_sizes");

-   }

-}

-

-

-

-/**

- * Update/replace all or part of a color table.  Helper function

- * used by _mesa_ColorTable() and _mesa_ColorSubTable().

- * The table->Table buffer should already be allocated.

- * \param start first entry to update

- * \param count number of entries to update

- * \param format format of user-provided table data

- * \param type datatype of user-provided table data

- * \param data user-provided table data

- * \param [rgba]Scale - RGBA scale factors

- * \param [rgba]Bias - RGBA bias factors

- */

-static void

-store_colortable_entries(struct gl_context *ctx, struct gl_color_table *table,

-			 GLsizei start, GLsizei count,

-			 GLenum format, GLenum type, const GLvoid *data,

-			 GLfloat rScale, GLfloat rBias,

-			 GLfloat gScale, GLfloat gBias,

-			 GLfloat bScale, GLfloat bBias,

-			 GLfloat aScale, GLfloat aBias)

-{

-   data = _mesa_map_validate_pbo_source(ctx, 

-                                        1, &ctx->Unpack, count, 1, 1,

-                                        format, type, data,

-                                        "glColor[Sub]Table");

-   if (!data)

-      return;

-

-   {

-      /* convert user-provided data to GLfloat values */

-      GLfloat tempTab[MAX_COLOR_TABLE_SIZE * 4];

-      GLfloat *tableF;

-      GLint i;

-

-      _mesa_unpack_color_span_float(ctx,

-                                    count,         /* number of pixels */

-                                    table->_BaseFormat, /* dest format */

-                                    tempTab,       /* dest address */

-                                    format, type,  /* src format/type */

-                                    data,          /* src data */

-                                    &ctx->Unpack,

-                                    IMAGE_CLAMP_BIT); /* transfer ops */

-

-      /* the destination */

-      tableF = table->TableF;

-

-      /* Apply scale & bias & clamp now */

-      switch (table->_BaseFormat) {

-         case GL_INTENSITY:

-            for (i = 0; i < count; i++) {

-               GLuint j = start + i;

-               tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);

-            }

-            break;

-         case GL_LUMINANCE:

-            for (i = 0; i < count; i++) {

-               GLuint j = start + i;

-               tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);

-            }

-            break;

-         case GL_ALPHA:

-            for (i = 0; i < count; i++) {

-               GLuint j = start + i;

-               tableF[j] = CLAMP(tempTab[i] * aScale + aBias, 0.0F, 1.0F);

-            }

-            break;

-         case GL_LUMINANCE_ALPHA:

-            for (i = 0; i < count; i++) {

-               GLuint j = start + i;

-               tableF[j*2+0] = CLAMP(tempTab[i*2+0] * rScale + rBias, 0.0F, 1.0F);

-               tableF[j*2+1] = CLAMP(tempTab[i*2+1] * aScale + aBias, 0.0F, 1.0F);

-            }

-            break;

-         case GL_RGB:

-            for (i = 0; i < count; i++) {

-               GLuint j = start + i;

-               tableF[j*3+0] = CLAMP(tempTab[i*3+0] * rScale + rBias, 0.0F, 1.0F);

-               tableF[j*3+1] = CLAMP(tempTab[i*3+1] * gScale + gBias, 0.0F, 1.0F);

-               tableF[j*3+2] = CLAMP(tempTab[i*3+2] * bScale + bBias, 0.0F, 1.0F);

-            }

-            break;

-         case GL_RGBA:

-            for (i = 0; i < count; i++) {

-               GLuint j = start + i;

-               tableF[j*4+0] = CLAMP(tempTab[i*4+0] * rScale + rBias, 0.0F, 1.0F);

-               tableF[j*4+1] = CLAMP(tempTab[i*4+1] * gScale + gBias, 0.0F, 1.0F);

-               tableF[j*4+2] = CLAMP(tempTab[i*4+2] * bScale + bBias, 0.0F, 1.0F);

-               tableF[j*4+3] = CLAMP(tempTab[i*4+3] * aScale + aBias, 0.0F, 1.0F);

-            }

-            break;

-         default:

-            _mesa_problem(ctx, "Bad format in store_colortable_entries");

-            return;

-         }

-   }

-

-   /* update the ubyte table */

-   {

-      const GLint comps = _mesa_components_in_format(table->_BaseFormat);

-      const GLfloat *tableF = table->TableF + start * comps;

-      GLubyte *tableUB = table->TableUB + start * comps;

-      GLint i;

-      for (i = 0; i < count * comps; i++) {

-         CLAMPED_FLOAT_TO_UBYTE(tableUB[i], tableF[i]);

-      }

-   }

-

-   _mesa_unmap_pbo_source(ctx, &ctx->Unpack);

-}

-

-

-

-void GLAPIENTRY

-_mesa_ColorTable( GLenum target, GLenum internalFormat,

-                  GLsizei width, GLenum format, GLenum type,

-                  const GLvoid *data )

-{

-   static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };

-   static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };

-   GET_CURRENT_CONTEXT(ctx);

-   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);

-   struct gl_texture_object *texObj = NULL;

-   struct gl_color_table *table = NULL;

-   GLboolean proxy = GL_FALSE;

-   GLint baseFormat;

-   const GLfloat *scale = one, *bias = zero;

-   GLint comps;

-

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */

-

-   switch (target) {

-      case GL_SHARED_TEXTURE_PALETTE_EXT:

-         table = &ctx->Texture.Palette;

-         break;

-      case GL_TEXTURE_COLOR_TABLE_SGI:

-         if (!ctx->Extensions.SGI_texture_color_table) {

-            _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");

-            return;

-         }

-         table = &(texUnit->ColorTable);

-         scale = ctx->Pixel.TextureColorTableScale;

-         bias = ctx->Pixel.TextureColorTableBias;

-         break;

-      case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:

-         if (!ctx->Extensions.SGI_texture_color_table) {

-            _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");

-            return;

-         }

-         table = &(texUnit->ProxyColorTable);

-         proxy = GL_TRUE;

-         break;

-      default:

-         /* try texture targets */

-         {

-            struct gl_texture_object *texobj

-               = _mesa_select_tex_object(ctx, texUnit, target);

-            if (texobj) {

-               table = &texobj->Palette;

-               proxy = _mesa_is_proxy_texture(target);

-            }

-            else {

-               _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");

-               return;

-            }

-         }

-   }

-

-   assert(table);

-

-   if (!_mesa_is_legal_format_and_type(ctx, format, type) ||

-       format == GL_INTENSITY) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)");

-      return;

-   }

-

-   baseFormat = base_colortab_format(internalFormat);

-   if (baseFormat < 0) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");

-      return;

-   }

-

-   if (width < 0 || (width != 0 && !_mesa_is_pow_two(width))) {

-      /* error */

-      if (proxy) {

-         table->Size = 0;

-         table->InternalFormat = (GLenum) 0;

-         table->_BaseFormat = (GLenum) 0;

-      }

-      else {

-         _mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width);

-      }

-      return;

-   }

-

-   if (width > (GLsizei) ctx->Const.MaxColorTableSize) {

-      if (proxy) {

-         table->Size = 0;

-         table->InternalFormat = (GLenum) 0;

-         table->_BaseFormat = (GLenum) 0;

-      }

-      else {

-         _mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");

-      }

-      return;

-   }

-

-   table->Size = width;

-   table->InternalFormat = internalFormat;

-   table->_BaseFormat = (GLenum) baseFormat;

-

-   comps = _mesa_components_in_format(table->_BaseFormat);

-   assert(comps > 0);  /* error should have been caught sooner */

-

-   if (!proxy) {

-      _mesa_free_colortable_data(table);

-

-      if (width > 0) {

-         table->TableF = (GLfloat *) malloc(comps * width * sizeof(GLfloat));

-         table->TableUB = (GLubyte *) malloc(comps * width * sizeof(GLubyte));

-

-	 if (!table->TableF || !table->TableUB) {

-	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable");

-	    return;

-	 }

-

-	 store_colortable_entries(ctx, table,

-				  0, width,  /* start, count */

-				  format, type, data,

-				  scale[0], bias[0],

-				  scale[1], bias[1],

-				  scale[2], bias[2],

-				  scale[3], bias[3]);

-      }

-   } /* proxy */

-

-   /* do this after the table's Type and Format are set */

-   set_component_sizes(table);

-

-   if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {

-      /* texture object palette, texObj==NULL means the shared palette */

-      if (ctx->Driver.UpdateTexturePalette) {

-         (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );

-      }

-   }

-

-   ctx->NewState |= _NEW_PIXEL;

-}

-

-

-

-void GLAPIENTRY

-_mesa_ColorSubTable( GLenum target, GLsizei start,

-                     GLsizei count, GLenum format, GLenum type,

-                     const GLvoid *data )

-{

-   static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };

-   static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };

-   GET_CURRENT_CONTEXT(ctx);

-   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);

-   struct gl_texture_object *texObj = NULL;

-   struct gl_color_table *table = NULL;

-   const GLfloat *scale = one, *bias = zero;

-

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   switch (target) {

-      case GL_SHARED_TEXTURE_PALETTE_EXT:

-         table = &ctx->Texture.Palette;

-         break;

-      case GL_TEXTURE_COLOR_TABLE_SGI:

-         if (!ctx->Extensions.SGI_texture_color_table) {

-            _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");

-            return;

-         }

-         table = &(texUnit->ColorTable);

-         scale = ctx->Pixel.TextureColorTableScale;

-         bias = ctx->Pixel.TextureColorTableBias;

-         break;

-      default:

-         /* try texture targets */

-         texObj = _mesa_select_tex_object(ctx, texUnit, target);

-         if (texObj && !_mesa_is_proxy_texture(target)) {

-            table = &texObj->Palette;

-         }

-         else {

-            _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");

-            return;

-         }

-   }

-

-   assert(table);

-

-   if (!_mesa_is_legal_format_and_type(ctx, format, type) ||

-       format == GL_INTENSITY) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glColorSubTable(format or type)");

-      return;

-   }

-

-   if (count < 1) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");

-      return;

-   }

-

-   /* error should have been caught sooner */

-   assert(_mesa_components_in_format(table->_BaseFormat) > 0);

-

-   if (start + count > (GLint) table->Size) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");

-      return;

-   }

-

-   if (!table->TableF || !table->TableUB) {

-      /* a GL_OUT_OF_MEMORY error would have been recorded previously */

-      return;

-   }

-

-   store_colortable_entries(ctx, table, start, count,

-			    format, type, data,

-                            scale[0], bias[0],

-                            scale[1], bias[1],

-                            scale[2], bias[2],

-                            scale[3], bias[3]);

-

-   if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {

-      /* per-texture object palette */

-      if (ctx->Driver.UpdateTexturePalette) {

-         (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );

-      }

-   }

-

-   ctx->NewState |= _NEW_PIXEL;

-}

-

-

-

-static void GLAPIENTRY

-_mesa_CopyColorTable(GLenum target, GLenum internalformat,

-                     GLint x, GLint y, GLsizei width)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (!ctx->ReadBuffer->_ColorReadBuffer) {

-      return;      /* no readbuffer - OK */

-   }

-

-   ctx->Driver.CopyColorTable( ctx, target, internalformat, x, y, width );

-}

-

-

-

-static void GLAPIENTRY

-_mesa_CopyColorSubTable(GLenum target, GLsizei start,

-                        GLint x, GLint y, GLsizei width)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (!ctx->ReadBuffer->_ColorReadBuffer) {

-      return;      /* no readbuffer - OK */

-   }

-

-   ctx->Driver.CopyColorSubTable( ctx, target, start, x, y, width );

-}

-

-

-

-static void GLAPIENTRY

-_mesa_GetColorTable( GLenum target, GLenum format,

-                     GLenum type, GLvoid *data )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);

-   struct gl_color_table *table = NULL;

-   GLfloat rgba[MAX_COLOR_TABLE_SIZE][4];

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (ctx->NewState) {

-      _mesa_update_state(ctx);

-   }

-

-   switch (target) {

-      case GL_SHARED_TEXTURE_PALETTE_EXT:

-         table = &ctx->Texture.Palette;

-         break;

-      case GL_TEXTURE_COLOR_TABLE_SGI:

-         if (!ctx->Extensions.SGI_texture_color_table) {

-            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");

-            return;

-         }

-         table = &(texUnit->ColorTable);

-         break;

-      default:

-         /* try texture targets */

-         {

-            struct gl_texture_object *texobj

-               = _mesa_select_tex_object(ctx, texUnit, target);

-            if (texobj && !_mesa_is_proxy_texture(target)) {

-               table = &texobj->Palette;

-            }

-            else {

-               _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");

-               return;

-            }

-         }

-   }

-

-   ASSERT(table);

-

-   if (table->Size <= 0) {

-      return;

-   }

-

-   switch (table->_BaseFormat) {

-   case GL_ALPHA:

-      {

-         GLuint i;

-         for (i = 0; i < table->Size; i++) {

-            rgba[i][RCOMP] = 0;

-            rgba[i][GCOMP] = 0;

-            rgba[i][BCOMP] = 0;

-            rgba[i][ACOMP] = table->TableF[i];

-         }

-      }

-      break;

-   case GL_LUMINANCE:

-      {

-         GLuint i;

-         for (i = 0; i < table->Size; i++) {

-            rgba[i][RCOMP] =

-            rgba[i][GCOMP] =

-            rgba[i][BCOMP] = table->TableF[i];

-            rgba[i][ACOMP] = 1.0F;

-         }

-      }

-      break;

-   case GL_LUMINANCE_ALPHA:

-      {

-         GLuint i;

-         for (i = 0; i < table->Size; i++) {

-            rgba[i][RCOMP] =

-            rgba[i][GCOMP] =

-            rgba[i][BCOMP] = table->TableF[i*2+0];

-            rgba[i][ACOMP] = table->TableF[i*2+1];

-         }

-      }

-      break;

-   case GL_INTENSITY:

-      {

-         GLuint i;

-         for (i = 0; i < table->Size; i++) {

-            rgba[i][RCOMP] =

-            rgba[i][GCOMP] =

-            rgba[i][BCOMP] =

-            rgba[i][ACOMP] = table->TableF[i];

-         }

-      }

-      break;

-   case GL_RGB:

-      {

-         GLuint i;

-         for (i = 0; i < table->Size; i++) {

-            rgba[i][RCOMP] = table->TableF[i*3+0];

-            rgba[i][GCOMP] = table->TableF[i*3+1];

-            rgba[i][BCOMP] = table->TableF[i*3+2];

-            rgba[i][ACOMP] = 1.0F;

-         }

-      }

-      break;

-   case GL_RGBA:

-      memcpy(rgba, table->TableF, 4 * table->Size * sizeof(GLfloat));

-      break;

-   default:

-      _mesa_problem(ctx, "bad table format in glGetColorTable");

-      return;

-   }

-

-   data = _mesa_map_validate_pbo_dest(ctx, 

-                                      1, &ctx->Pack, table->Size, 1, 1,

-                                      format, type, data,

-                                      "glGetColorTable");

-   if (!data)

-      return;

-

-   _mesa_pack_rgba_span_float(ctx, table->Size, rgba,

-                              format, type, data, &ctx->Pack, 0x0);

-

-   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);

-}

-

-

-

-static void GLAPIENTRY

-_mesa_ColorTableParameterfv(GLenum target, GLenum pname, const GLfloat *params)

-{

-   GLfloat *scale, *bias;

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   switch (target) {

-   case GL_TEXTURE_COLOR_TABLE_SGI:

-      scale = ctx->Pixel.TextureColorTableScale;

-      bias  = ctx->Pixel.TextureColorTableBias;

-      break;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameter(target)");

-      return;

-   }

-

-   if (pname == GL_COLOR_TABLE_SCALE_SGI) {

-      COPY_4V(scale, params);

-   }

-   else if (pname == GL_COLOR_TABLE_BIAS_SGI) {

-      COPY_4V(bias, params);

-   }

-   else {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(pname)");

-      return;

-   }

-

-   ctx->NewState |= _NEW_PIXEL;

-}

-

-

-

-static void GLAPIENTRY

-_mesa_ColorTableParameteriv(GLenum target, GLenum pname, const GLint *params)

-{

-   GLfloat fparams[4];

-   if (pname == GL_TEXTURE_COLOR_TABLE_SGI) {

-      /* four values */

-      fparams[0] = (GLfloat) params[0];

-      fparams[1] = (GLfloat) params[1];

-      fparams[2] = (GLfloat) params[2];

-      fparams[3] = (GLfloat) params[3];

-   }

-   else {

-      /* one values */

-      fparams[0] = (GLfloat) params[0];

-   }

-   _mesa_ColorTableParameterfv(target, pname, fparams);

-}

-

-

-

-static void GLAPIENTRY

-_mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);

-   struct gl_color_table *table = NULL;

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   switch (target) {

-      case GL_SHARED_TEXTURE_PALETTE_EXT:

-         table = &ctx->Texture.Palette;

-         break;

-      case GL_TEXTURE_COLOR_TABLE_SGI:

-         if (!ctx->Extensions.SGI_texture_color_table) {

-            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");

-            return;

-         }

-         table = &(texUnit->ColorTable);

-         if (pname == GL_COLOR_TABLE_SCALE_SGI) {

-            COPY_4V(params, ctx->Pixel.TextureColorTableScale);

-            return;

-         }

-         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {

-            COPY_4V(params, ctx->Pixel.TextureColorTableBias);

-            return;

-         }

-         break;

-      case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:

-         if (!ctx->Extensions.SGI_texture_color_table) {

-            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");

-            return;

-         }

-         table = &(texUnit->ProxyColorTable);

-         break;

-      default:

-         /* try texture targets */

-         {

-            struct gl_texture_object *texobj

-               = _mesa_select_tex_object(ctx, texUnit, target);

-            if (texobj) {

-               table = &texobj->Palette;

-            }

-            else {

-               _mesa_error(ctx, GL_INVALID_ENUM,

-                           "glGetColorTableParameterfv(target)");

-               return;

-            }

-         }

-   }

-

-   assert(table);

-

-   switch (pname) {

-      case GL_COLOR_TABLE_FORMAT:

-         *params = (GLfloat) table->InternalFormat;

-         break;

-      case GL_COLOR_TABLE_WIDTH:

-         *params = (GLfloat) table->Size;

-         break;

-      case GL_COLOR_TABLE_RED_SIZE:

-         *params = (GLfloat) table->RedSize;

-         break;

-      case GL_COLOR_TABLE_GREEN_SIZE:

-         *params = (GLfloat) table->GreenSize;

-         break;

-      case GL_COLOR_TABLE_BLUE_SIZE:

-         *params = (GLfloat) table->BlueSize;

-         break;

-      case GL_COLOR_TABLE_ALPHA_SIZE:

-         *params = (GLfloat) table->AlphaSize;

-         break;

-      case GL_COLOR_TABLE_LUMINANCE_SIZE:

-         *params = (GLfloat) table->LuminanceSize;

-         break;

-      case GL_COLOR_TABLE_INTENSITY_SIZE:

-         *params = (GLfloat) table->IntensitySize;

-         break;

-      default:

-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameterfv(pname)" );

-         return;

-   }

-}

-

-

-

-static void GLAPIENTRY

-_mesa_GetColorTableParameteriv( GLenum target, GLenum pname, GLint *params )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);

-   struct gl_color_table *table = NULL;

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   switch (target) {

-      case GL_SHARED_TEXTURE_PALETTE_EXT:

-         table = &ctx->Texture.Palette;

-         break;

-      case GL_TEXTURE_COLOR_TABLE_SGI:

-         if (!ctx->Extensions.SGI_texture_color_table) {

-            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");

-            return;

-         }

-         table = &(texUnit->ColorTable);

-         if (pname == GL_COLOR_TABLE_SCALE_SGI) {

-            params[0] = (GLint) ctx->Pixel.TextureColorTableScale[0];

-            params[1] = (GLint) ctx->Pixel.TextureColorTableScale[1];

-            params[2] = (GLint) ctx->Pixel.TextureColorTableScale[2];

-            params[3] = (GLint) ctx->Pixel.TextureColorTableScale[3];

-            return;

-         }

-         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {

-            params[0] = (GLint) ctx->Pixel.TextureColorTableBias[0];

-            params[1] = (GLint) ctx->Pixel.TextureColorTableBias[1];

-            params[2] = (GLint) ctx->Pixel.TextureColorTableBias[2];

-            params[3] = (GLint) ctx->Pixel.TextureColorTableBias[3];

-            return;

-         }

-         break;

-      case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:

-         if (!ctx->Extensions.SGI_texture_color_table) {

-            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");

-            return;

-         }

-         table = &(texUnit->ProxyColorTable);

-         break;

-      default:

-         /* Try texture targets */

-         {

-            struct gl_texture_object *texobj

-               = _mesa_select_tex_object(ctx, texUnit, target);

-            if (texobj) {

-               table = &texobj->Palette;

-            }

-            else {

-               _mesa_error(ctx, GL_INVALID_ENUM,

-                           "glGetColorTableParameteriv(target)");

-               return;

-            }

-         }

-   }

-

-   assert(table);

-

-   switch (pname) {

-      case GL_COLOR_TABLE_FORMAT:

-         *params = table->InternalFormat;

-         break;

-      case GL_COLOR_TABLE_WIDTH:

-         *params = table->Size;

-         break;

-      case GL_COLOR_TABLE_RED_SIZE:

-         *params = table->RedSize;

-         break;

-      case GL_COLOR_TABLE_GREEN_SIZE:

-         *params = table->GreenSize;

-         break;

-      case GL_COLOR_TABLE_BLUE_SIZE:

-         *params = table->BlueSize;

-         break;

-      case GL_COLOR_TABLE_ALPHA_SIZE:

-         *params = table->AlphaSize;

-         break;

-      case GL_COLOR_TABLE_LUMINANCE_SIZE:

-         *params = table->LuminanceSize;

-         break;

-      case GL_COLOR_TABLE_INTENSITY_SIZE:

-         *params = table->IntensitySize;

-         break;

-      default:

-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameteriv(pname)" );

-         return;

-   }

-}

-

-

-void

-_mesa_init_colortable_dispatch(struct _glapi_table *disp)

-{

-   SET_ColorSubTable(disp, _mesa_ColorSubTable);

-   SET_ColorTable(disp, _mesa_ColorTable);

-   SET_ColorTableParameterfv(disp, _mesa_ColorTableParameterfv);

-   SET_ColorTableParameteriv(disp, _mesa_ColorTableParameteriv);

-   SET_CopyColorSubTable(disp, _mesa_CopyColorSubTable);

-   SET_CopyColorTable(disp, _mesa_CopyColorTable);

-   SET_GetColorTable(disp, _mesa_GetColorTable);

-   SET_GetColorTableParameterfv(disp, _mesa_GetColorTableParameterfv);

-   SET_GetColorTableParameteriv(disp, _mesa_GetColorTableParameteriv);

-}

-

-

-#endif /* FEATURE_colortable */

-

-

-/**********************************************************************/

-/*****                      Initialization                        *****/

-/**********************************************************************/

-

-

-void

-_mesa_init_colortable( struct gl_color_table *p )

-{

-   p->TableF = NULL;

-   p->TableUB = NULL;

-   p->Size = 0;

-   p->InternalFormat = GL_RGBA;

-}

-

-

-

-void

-_mesa_free_colortable_data( struct gl_color_table *p )

-{

-   if (p->TableF) {

-      free(p->TableF);

-      p->TableF = NULL;

-   }

-   if (p->TableUB) {

-      free(p->TableUB);

-      p->TableUB = NULL;

-   }

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "glheader.h"
+#include "bufferobj.h"
+#include "colortab.h"
+#include "context.h"
+#include "image.h"
+#include "macros.h"
+#include "mfeatures.h"
+#include "mtypes.h"
+#include "pack.h"
+#include "pbo.h"
+#include "state.h"
+#include "teximage.h"
+#include "texstate.h"
+#include "main/dispatch.h"
+
+
+#if FEATURE_colortable
+
+
+/**
+ * Given an internalFormat token passed to glColorTable,
+ * return the corresponding base format.
+ * Return -1 if invalid token.
+ */
+static GLint
+base_colortab_format( GLenum format )
+{
+   switch (format) {
+      case GL_ALPHA:
+      case GL_ALPHA4:
+      case GL_ALPHA8:
+      case GL_ALPHA12:
+      case GL_ALPHA16:
+         return GL_ALPHA;
+      case GL_LUMINANCE:
+      case GL_LUMINANCE4:
+      case GL_LUMINANCE8:
+      case GL_LUMINANCE12:
+      case GL_LUMINANCE16:
+         return GL_LUMINANCE;
+      case GL_LUMINANCE_ALPHA:
+      case GL_LUMINANCE4_ALPHA4:
+      case GL_LUMINANCE6_ALPHA2:
+      case GL_LUMINANCE8_ALPHA8:
+      case GL_LUMINANCE12_ALPHA4:
+      case GL_LUMINANCE12_ALPHA12:
+      case GL_LUMINANCE16_ALPHA16:
+         return GL_LUMINANCE_ALPHA;
+      case GL_INTENSITY:
+      case GL_INTENSITY4:
+      case GL_INTENSITY8:
+      case GL_INTENSITY12:
+      case GL_INTENSITY16:
+         return GL_INTENSITY;
+      case GL_RGB:
+      case GL_R3_G3_B2:
+      case GL_RGB4:
+      case GL_RGB5:
+      case GL_RGB8:
+      case GL_RGB10:
+      case GL_RGB12:
+      case GL_RGB16:
+         return GL_RGB;
+      case GL_RGBA:
+      case GL_RGBA2:
+      case GL_RGBA4:
+      case GL_RGB5_A1:
+      case GL_RGBA8:
+      case GL_RGB10_A2:
+      case GL_RGBA12:
+      case GL_RGBA16:
+         return GL_RGBA;
+      default:
+         return -1;  /* error */
+   }
+}
+
+
+
+/**
+ * Examine table's format and set the component sizes accordingly.
+ */
+static void
+set_component_sizes( struct gl_color_table *table )
+{
+   /* assuming the ubyte table */
+   const GLubyte sz = 8;
+
+   switch (table->_BaseFormat) {
+      case GL_ALPHA:
+         table->RedSize = 0;
+         table->GreenSize = 0;
+         table->BlueSize = 0;
+         table->AlphaSize = sz;
+         table->IntensitySize = 0;
+         table->LuminanceSize = 0;
+         break;
+      case GL_LUMINANCE:
+         table->RedSize = 0;
+         table->GreenSize = 0;
+         table->BlueSize = 0;
+         table->AlphaSize = 0;
+         table->IntensitySize = 0;
+         table->LuminanceSize = sz;
+         break;
+      case GL_LUMINANCE_ALPHA:
+         table->RedSize = 0;
+         table->GreenSize = 0;
+         table->BlueSize = 0;
+         table->AlphaSize = sz;
+         table->IntensitySize = 0;
+         table->LuminanceSize = sz;
+         break;
+      case GL_INTENSITY:
+         table->RedSize = 0;
+         table->GreenSize = 0;
+         table->BlueSize = 0;
+         table->AlphaSize = 0;
+         table->IntensitySize = sz;
+         table->LuminanceSize = 0;
+         break;
+      case GL_RGB:
+         table->RedSize = sz;
+         table->GreenSize = sz;
+         table->BlueSize = sz;
+         table->AlphaSize = 0;
+         table->IntensitySize = 0;
+         table->LuminanceSize = 0;
+         break;
+      case GL_RGBA:
+         table->RedSize = sz;
+         table->GreenSize = sz;
+         table->BlueSize = sz;
+         table->AlphaSize = sz;
+         table->IntensitySize = 0;
+         table->LuminanceSize = 0;
+         break;
+      default:
+         _mesa_problem(NULL, "unexpected format in set_component_sizes");
+   }
+}
+
+
+
+/**
+ * Update/replace all or part of a color table.  Helper function
+ * used by _mesa_ColorTable() and _mesa_ColorSubTable().
+ * The table->Table buffer should already be allocated.
+ * \param start first entry to update
+ * \param count number of entries to update
+ * \param format format of user-provided table data
+ * \param type datatype of user-provided table data
+ * \param data user-provided table data
+ * \param [rgba]Scale - RGBA scale factors
+ * \param [rgba]Bias - RGBA bias factors
+ */
+static void
+store_colortable_entries(struct gl_context *ctx, struct gl_color_table *table,
+			 GLsizei start, GLsizei count,
+			 GLenum format, GLenum type, const GLvoid *data,
+			 GLfloat rScale, GLfloat rBias,
+			 GLfloat gScale, GLfloat gBias,
+			 GLfloat bScale, GLfloat bBias,
+			 GLfloat aScale, GLfloat aBias)
+{
+   data = _mesa_map_validate_pbo_source(ctx, 
+                                        1, &ctx->Unpack, count, 1, 1,
+                                        format, type, data,
+                                        "glColor[Sub]Table");
+   if (!data)
+      return;
+
+   {
+      /* convert user-provided data to GLfloat values */
+      GLfloat tempTab[MAX_COLOR_TABLE_SIZE * 4];
+      GLfloat *tableF;
+      GLint i;
+
+      _mesa_unpack_color_span_float(ctx,
+                                    count,         /* number of pixels */
+                                    table->_BaseFormat, /* dest format */
+                                    tempTab,       /* dest address */
+                                    format, type,  /* src format/type */
+                                    data,          /* src data */
+                                    &ctx->Unpack,
+                                    IMAGE_CLAMP_BIT); /* transfer ops */
+
+      /* the destination */
+      tableF = table->TableF;
+
+      /* Apply scale & bias & clamp now */
+      switch (table->_BaseFormat) {
+         case GL_INTENSITY:
+            for (i = 0; i < count; i++) {
+               GLuint j = start + i;
+               tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
+            }
+            break;
+         case GL_LUMINANCE:
+            for (i = 0; i < count; i++) {
+               GLuint j = start + i;
+               tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
+            }
+            break;
+         case GL_ALPHA:
+            for (i = 0; i < count; i++) {
+               GLuint j = start + i;
+               tableF[j] = CLAMP(tempTab[i] * aScale + aBias, 0.0F, 1.0F);
+            }
+            break;
+         case GL_LUMINANCE_ALPHA:
+            for (i = 0; i < count; i++) {
+               GLuint j = start + i;
+               tableF[j*2+0] = CLAMP(tempTab[i*2+0] * rScale + rBias, 0.0F, 1.0F);
+               tableF[j*2+1] = CLAMP(tempTab[i*2+1] * aScale + aBias, 0.0F, 1.0F);
+            }
+            break;
+         case GL_RGB:
+            for (i = 0; i < count; i++) {
+               GLuint j = start + i;
+               tableF[j*3+0] = CLAMP(tempTab[i*3+0] * rScale + rBias, 0.0F, 1.0F);
+               tableF[j*3+1] = CLAMP(tempTab[i*3+1] * gScale + gBias, 0.0F, 1.0F);
+               tableF[j*3+2] = CLAMP(tempTab[i*3+2] * bScale + bBias, 0.0F, 1.0F);
+            }
+            break;
+         case GL_RGBA:
+            for (i = 0; i < count; i++) {
+               GLuint j = start + i;
+               tableF[j*4+0] = CLAMP(tempTab[i*4+0] * rScale + rBias, 0.0F, 1.0F);
+               tableF[j*4+1] = CLAMP(tempTab[i*4+1] * gScale + gBias, 0.0F, 1.0F);
+               tableF[j*4+2] = CLAMP(tempTab[i*4+2] * bScale + bBias, 0.0F, 1.0F);
+               tableF[j*4+3] = CLAMP(tempTab[i*4+3] * aScale + aBias, 0.0F, 1.0F);
+            }
+            break;
+         default:
+            _mesa_problem(ctx, "Bad format in store_colortable_entries");
+            return;
+         }
+   }
+
+   /* update the ubyte table */
+   {
+      const GLint comps = _mesa_components_in_format(table->_BaseFormat);
+      const GLfloat *tableF = table->TableF + start * comps;
+      GLubyte *tableUB = table->TableUB + start * comps;
+      GLint i;
+      for (i = 0; i < count * comps; i++) {
+         CLAMPED_FLOAT_TO_UBYTE(tableUB[i], tableF[i]);
+      }
+   }
+
+   _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
+}
+
+
+
+void GLAPIENTRY
+_mesa_ColorTable( GLenum target, GLenum internalFormat,
+                  GLsizei width, GLenum format, GLenum type,
+                  const GLvoid *data )
+{
+   static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
+   static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
+   struct gl_texture_object *texObj = NULL;
+   struct gl_color_table *table = NULL;
+   GLboolean proxy = GL_FALSE;
+   GLint baseFormat;
+   const GLfloat *scale = one, *bias = zero;
+   GLint comps;
+
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
+
+   switch (target) {
+      case GL_SHARED_TEXTURE_PALETTE_EXT:
+         table = &ctx->Texture.Palette;
+         break;
+      default:
+         /* try texture targets */
+         {
+            struct gl_texture_object *texobj
+               = _mesa_select_tex_object(ctx, texUnit, target);
+            if (texobj) {
+               table = &texobj->Palette;
+               proxy = _mesa_is_proxy_texture(target);
+            }
+            else {
+               _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
+               return;
+            }
+         }
+   }
+
+   assert(table);
+
+   if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
+       format == GL_INTENSITY) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)");
+      return;
+   }
+
+   baseFormat = base_colortab_format(internalFormat);
+   if (baseFormat < 0) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
+      return;
+   }
+
+   if (width < 0 || (width != 0 && !_mesa_is_pow_two(width))) {
+      /* error */
+      if (proxy) {
+         table->Size = 0;
+         table->InternalFormat = (GLenum) 0;
+         table->_BaseFormat = (GLenum) 0;
+      }
+      else {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width);
+      }
+      return;
+   }
+
+   if (width > (GLsizei) ctx->Const.MaxColorTableSize) {
+      if (proxy) {
+         table->Size = 0;
+         table->InternalFormat = (GLenum) 0;
+         table->_BaseFormat = (GLenum) 0;
+      }
+      else {
+         _mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");
+      }
+      return;
+   }
+
+   table->Size = width;
+   table->InternalFormat = internalFormat;
+   table->_BaseFormat = (GLenum) baseFormat;
+
+   comps = _mesa_components_in_format(table->_BaseFormat);
+   assert(comps > 0);  /* error should have been caught sooner */
+
+   if (!proxy) {
+      _mesa_free_colortable_data(table);
+
+      if (width > 0) {
+         table->TableF = (GLfloat *) malloc(comps * width * sizeof(GLfloat));
+         table->TableUB = (GLubyte *) malloc(comps * width * sizeof(GLubyte));
+
+	 if (!table->TableF || !table->TableUB) {
+	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable");
+	    return;
+	 }
+
+	 store_colortable_entries(ctx, table,
+				  0, width,  /* start, count */
+				  format, type, data,
+				  scale[0], bias[0],
+				  scale[1], bias[1],
+				  scale[2], bias[2],
+				  scale[3], bias[3]);
+      }
+   } /* proxy */
+
+   /* do this after the table's Type and Format are set */
+   set_component_sizes(table);
+
+   if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
+      /* texture object palette, texObj==NULL means the shared palette */
+      if (ctx->Driver.UpdateTexturePalette) {
+         (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
+      }
+   }
+
+   ctx->NewState |= _NEW_PIXEL;
+}
+
+
+
+void GLAPIENTRY
+_mesa_ColorSubTable( GLenum target, GLsizei start,
+                     GLsizei count, GLenum format, GLenum type,
+                     const GLvoid *data )
+{
+   static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
+   static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
+   struct gl_texture_object *texObj = NULL;
+   struct gl_color_table *table = NULL;
+   const GLfloat *scale = one, *bias = zero;
+
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   switch (target) {
+      case GL_SHARED_TEXTURE_PALETTE_EXT:
+         table = &ctx->Texture.Palette;
+         break;
+      default:
+         /* try texture targets */
+         texObj = _mesa_select_tex_object(ctx, texUnit, target);
+         if (texObj && !_mesa_is_proxy_texture(target)) {
+            table = &texObj->Palette;
+         }
+         else {
+            _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
+            return;
+         }
+   }
+
+   assert(table);
+
+   if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
+       format == GL_INTENSITY) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glColorSubTable(format or type)");
+      return;
+   }
+
+   if (count < 1) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
+      return;
+   }
+
+   /* error should have been caught sooner */
+   assert(_mesa_components_in_format(table->_BaseFormat) > 0);
+
+   if (start + count > (GLint) table->Size) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
+      return;
+   }
+
+   if (!table->TableF || !table->TableUB) {
+      /* a GL_OUT_OF_MEMORY error would have been recorded previously */
+      return;
+   }
+
+   store_colortable_entries(ctx, table, start, count,
+			    format, type, data,
+                            scale[0], bias[0],
+                            scale[1], bias[1],
+                            scale[2], bias[2],
+                            scale[3], bias[3]);
+
+   if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
+      /* per-texture object palette */
+      if (ctx->Driver.UpdateTexturePalette) {
+         (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
+      }
+   }
+
+   ctx->NewState |= _NEW_PIXEL;
+}
+
+
+
+static void GLAPIENTRY
+_mesa_CopyColorTable(GLenum target, GLenum internalformat,
+                     GLint x, GLint y, GLsizei width)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (!ctx->ReadBuffer->_ColorReadBuffer) {
+      return;      /* no readbuffer - OK */
+   }
+
+   ctx->Driver.CopyColorTable( ctx, target, internalformat, x, y, width );
+}
+
+
+
+static void GLAPIENTRY
+_mesa_CopyColorSubTable(GLenum target, GLsizei start,
+                        GLint x, GLint y, GLsizei width)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (!ctx->ReadBuffer->_ColorReadBuffer) {
+      return;      /* no readbuffer - OK */
+   }
+
+   ctx->Driver.CopyColorSubTable( ctx, target, start, x, y, width );
+}
+
+
+
+static void GLAPIENTRY
+_mesa_GetColorTable( GLenum target, GLenum format,
+                     GLenum type, GLvoid *data )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
+   struct gl_color_table *table = NULL;
+   GLfloat rgba[MAX_COLOR_TABLE_SIZE][4];
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (ctx->NewState) {
+      _mesa_update_state(ctx);
+   }
+
+   switch (target) {
+      case GL_SHARED_TEXTURE_PALETTE_EXT:
+         table = &ctx->Texture.Palette;
+         break;
+      default:
+         /* try texture targets */
+         {
+            struct gl_texture_object *texobj
+               = _mesa_select_tex_object(ctx, texUnit, target);
+            if (texobj && !_mesa_is_proxy_texture(target)) {
+               table = &texobj->Palette;
+            }
+            else {
+               _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
+               return;
+            }
+         }
+   }
+
+   ASSERT(table);
+
+   if (table->Size <= 0) {
+      return;
+   }
+
+   switch (table->_BaseFormat) {
+   case GL_ALPHA:
+      {
+         GLuint i;
+         for (i = 0; i < table->Size; i++) {
+            rgba[i][RCOMP] = 0;
+            rgba[i][GCOMP] = 0;
+            rgba[i][BCOMP] = 0;
+            rgba[i][ACOMP] = table->TableF[i];
+         }
+      }
+      break;
+   case GL_LUMINANCE:
+      {
+         GLuint i;
+         for (i = 0; i < table->Size; i++) {
+            rgba[i][RCOMP] =
+            rgba[i][GCOMP] =
+            rgba[i][BCOMP] = table->TableF[i];
+            rgba[i][ACOMP] = 1.0F;
+         }
+      }
+      break;
+   case GL_LUMINANCE_ALPHA:
+      {
+         GLuint i;
+         for (i = 0; i < table->Size; i++) {
+            rgba[i][RCOMP] =
+            rgba[i][GCOMP] =
+            rgba[i][BCOMP] = table->TableF[i*2+0];
+            rgba[i][ACOMP] = table->TableF[i*2+1];
+         }
+      }
+      break;
+   case GL_INTENSITY:
+      {
+         GLuint i;
+         for (i = 0; i < table->Size; i++) {
+            rgba[i][RCOMP] =
+            rgba[i][GCOMP] =
+            rgba[i][BCOMP] =
+            rgba[i][ACOMP] = table->TableF[i];
+         }
+      }
+      break;
+   case GL_RGB:
+      {
+         GLuint i;
+         for (i = 0; i < table->Size; i++) {
+            rgba[i][RCOMP] = table->TableF[i*3+0];
+            rgba[i][GCOMP] = table->TableF[i*3+1];
+            rgba[i][BCOMP] = table->TableF[i*3+2];
+            rgba[i][ACOMP] = 1.0F;
+         }
+      }
+      break;
+   case GL_RGBA:
+      memcpy(rgba, table->TableF, 4 * table->Size * sizeof(GLfloat));
+      break;
+   default:
+      _mesa_problem(ctx, "bad table format in glGetColorTable");
+      return;
+   }
+
+   data = _mesa_map_validate_pbo_dest(ctx, 
+                                      1, &ctx->Pack, table->Size, 1, 1,
+                                      format, type, data,
+                                      "glGetColorTable");
+   if (!data)
+      return;
+
+   _mesa_pack_rgba_span_float(ctx, table->Size, rgba,
+                              format, type, data, &ctx->Pack, 0x0);
+
+   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
+}
+
+
+
+static void GLAPIENTRY
+_mesa_ColorTableParameterfv(GLenum target, GLenum pname, const GLfloat *params)
+{
+   /* no extensions use this function */
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+   _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(target)");
+}
+
+
+
+static void GLAPIENTRY
+_mesa_ColorTableParameteriv(GLenum target, GLenum pname, const GLint *params)
+{
+   /* no extensions use this function */
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+   _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameteriv(target)");
+}
+
+
+
+static void GLAPIENTRY
+_mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
+   struct gl_color_table *table = NULL;
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   switch (target) {
+      case GL_SHARED_TEXTURE_PALETTE_EXT:
+         table = &ctx->Texture.Palette;
+         break;
+      default:
+         /* try texture targets */
+         {
+            struct gl_texture_object *texobj
+               = _mesa_select_tex_object(ctx, texUnit, target);
+            if (texobj) {
+               table = &texobj->Palette;
+            }
+            else {
+               _mesa_error(ctx, GL_INVALID_ENUM,
+                           "glGetColorTableParameterfv(target)");
+               return;
+            }
+         }
+   }
+
+   assert(table);
+
+   switch (pname) {
+      case GL_COLOR_TABLE_FORMAT:
+         *params = (GLfloat) table->InternalFormat;
+         break;
+      case GL_COLOR_TABLE_WIDTH:
+         *params = (GLfloat) table->Size;
+         break;
+      case GL_COLOR_TABLE_RED_SIZE:
+         *params = (GLfloat) table->RedSize;
+         break;
+      case GL_COLOR_TABLE_GREEN_SIZE:
+         *params = (GLfloat) table->GreenSize;
+         break;
+      case GL_COLOR_TABLE_BLUE_SIZE:
+         *params = (GLfloat) table->BlueSize;
+         break;
+      case GL_COLOR_TABLE_ALPHA_SIZE:
+         *params = (GLfloat) table->AlphaSize;
+         break;
+      case GL_COLOR_TABLE_LUMINANCE_SIZE:
+         *params = (GLfloat) table->LuminanceSize;
+         break;
+      case GL_COLOR_TABLE_INTENSITY_SIZE:
+         *params = (GLfloat) table->IntensitySize;
+         break;
+      default:
+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameterfv(pname)" );
+         return;
+   }
+}
+
+
+
+static void GLAPIENTRY
+_mesa_GetColorTableParameteriv( GLenum target, GLenum pname, GLint *params )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
+   struct gl_color_table *table = NULL;
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   switch (target) {
+      case GL_SHARED_TEXTURE_PALETTE_EXT:
+         table = &ctx->Texture.Palette;
+         break;
+      default:
+         /* Try texture targets */
+         {
+            struct gl_texture_object *texobj
+               = _mesa_select_tex_object(ctx, texUnit, target);
+            if (texobj) {
+               table = &texobj->Palette;
+            }
+            else {
+               _mesa_error(ctx, GL_INVALID_ENUM,
+                           "glGetColorTableParameteriv(target)");
+               return;
+            }
+         }
+   }
+
+   assert(table);
+
+   switch (pname) {
+      case GL_COLOR_TABLE_FORMAT:
+         *params = table->InternalFormat;
+         break;
+      case GL_COLOR_TABLE_WIDTH:
+         *params = table->Size;
+         break;
+      case GL_COLOR_TABLE_RED_SIZE:
+         *params = table->RedSize;
+         break;
+      case GL_COLOR_TABLE_GREEN_SIZE:
+         *params = table->GreenSize;
+         break;
+      case GL_COLOR_TABLE_BLUE_SIZE:
+         *params = table->BlueSize;
+         break;
+      case GL_COLOR_TABLE_ALPHA_SIZE:
+         *params = table->AlphaSize;
+         break;
+      case GL_COLOR_TABLE_LUMINANCE_SIZE:
+         *params = table->LuminanceSize;
+         break;
+      case GL_COLOR_TABLE_INTENSITY_SIZE:
+         *params = table->IntensitySize;
+         break;
+      default:
+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameteriv(pname)" );
+         return;
+   }
+}
+
+
+void
+_mesa_init_colortable_dispatch(struct _glapi_table *disp)
+{
+   SET_ColorSubTable(disp, _mesa_ColorSubTable);
+   SET_ColorTable(disp, _mesa_ColorTable);
+   SET_ColorTableParameterfv(disp, _mesa_ColorTableParameterfv);
+   SET_ColorTableParameteriv(disp, _mesa_ColorTableParameteriv);
+   SET_CopyColorSubTable(disp, _mesa_CopyColorSubTable);
+   SET_CopyColorTable(disp, _mesa_CopyColorTable);
+   SET_GetColorTable(disp, _mesa_GetColorTable);
+   SET_GetColorTableParameterfv(disp, _mesa_GetColorTableParameterfv);
+   SET_GetColorTableParameteriv(disp, _mesa_GetColorTableParameteriv);
+}
+
+
+#endif /* FEATURE_colortable */
+
+
+/**********************************************************************/
+/*****                      Initialization                        *****/
+/**********************************************************************/
+
+
+void
+_mesa_init_colortable( struct gl_color_table *p )
+{
+   p->TableF = NULL;
+   p->TableUB = NULL;
+   p->Size = 0;
+   p->InternalFormat = GL_RGBA;
+}
+
+
+
+void
+_mesa_free_colortable_data( struct gl_color_table *p )
+{
+   if (p->TableF) {
+      free(p->TableF);
+      p->TableF = NULL;
+   }
+   if (p->TableUB) {
+      free(p->TableUB);
+      p->TableUB = NULL;
+   }
+}
diff --git a/mesalib/src/mesa/main/dlist.c b/mesalib/src/mesa/main/dlist.c
index 8e904c778..4e463dd06 100644
--- a/mesalib/src/mesa/main/dlist.c
+++ b/mesalib/src/mesa/main/dlist.c
@@ -54,6 +54,7 @@
 #include "light.h"
 #include "macros.h"
 #include "pack.h"
+#include "pbo.h"
 #include "queryobj.h"
 #include "teximage.h"
 #include "mtypes.h"
diff --git a/mesalib/src/mesa/main/drawpix.c b/mesalib/src/mesa/main/drawpix.c
index 554d7a84a..98e82ef85 100644
--- a/mesalib/src/mesa/main/drawpix.c
+++ b/mesalib/src/mesa/main/drawpix.c
@@ -1,303 +1,304 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.1

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-#include "glheader.h"

-#include "imports.h"

-#include "bufferobj.h"

-#include "context.h"

-#include "drawpix.h"

-#include "enums.h"

-#include "feedback.h"

-#include "framebuffer.h"

-#include "mfeatures.h"

-#include "readpix.h"

-#include "state.h"

-#include "dispatch.h"

-

-

-#if FEATURE_drawpix

-

-

-/*

- * Execute glDrawPixels

- */

-static void GLAPIENTRY

-_mesa_DrawPixels( GLsizei width, GLsizei height,

-                  GLenum format, GLenum type, const GLvoid *pixels )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (MESA_VERBOSE & VERBOSE_API)

-      _mesa_debug(ctx, "glDrawPixels(%d, %d, %s, %s, %p) // to %s at %d, %d\n",

-                  width, height,

-                  _mesa_lookup_enum_by_nr(format),

-                  _mesa_lookup_enum_by_nr(type),

-                  pixels,

-                  _mesa_lookup_enum_by_nr(ctx->DrawBuffer->ColorDrawBuffer[0]),

-                  IROUND(ctx->Current.RasterPos[0]),

-                  IROUND(ctx->Current.RasterPos[1]));

-

-

-   if (width < 0 || height < 0) {

-      _mesa_error( ctx, GL_INVALID_VALUE, "glDrawPixels(width or height < 0" );

-      return;

-   }

-

-   /* We're not using the current vertex program, and the driver may install

-    * its own.  Note: this may dirty some state.

-    */

-   _mesa_set_vp_override(ctx, GL_TRUE);

-

-   /* Note: this call does state validation */

-   if (!_mesa_valid_to_render(ctx, "glDrawPixels")) {

-      goto end;      /* the error code was recorded */

-   }

-

-   if (_mesa_error_check_format_type(ctx, format, type, GL_TRUE)) {

-      goto end;      /* the error code was recorded */

-   }

-

-   if (!ctx->Current.RasterPosValid) {

-      goto end;  /* no-op, not an error */

-   }

-

-   if (ctx->RenderMode == GL_RENDER) {

-      if (width > 0 && height > 0) {

-         /* Round, to satisfy conformance tests (matches SGI's OpenGL) */

-         GLint x = IROUND(ctx->Current.RasterPos[0]);

-         GLint y = IROUND(ctx->Current.RasterPos[1]);

-

-         if (ctx->Unpack.BufferObj->Name) {

-            /* unpack from PBO */

-            if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height, 1,

-                                           format, type, pixels)) {

-               _mesa_error(ctx, GL_INVALID_OPERATION,

-                           "glDrawPixels(invalid PBO access)");

-               goto end;

-            }

-            if (_mesa_bufferobj_mapped(ctx->Unpack.BufferObj)) {

-               /* buffer is mapped - that's an error */

-               _mesa_error(ctx, GL_INVALID_OPERATION,

-                           "glDrawPixels(PBO is mapped)");

-               goto end;

-            }

-         }

-

-         ctx->Driver.DrawPixels(ctx, x, y, width, height, format, type,

-                                &ctx->Unpack, pixels);

-      }

-   }

-   else if (ctx->RenderMode == GL_FEEDBACK) {

-      /* Feedback the current raster pos info */

-      FLUSH_CURRENT( ctx, 0 );

-      _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );

-      _mesa_feedback_vertex( ctx,

-                             ctx->Current.RasterPos,

-                             ctx->Current.RasterColor,

-                             ctx->Current.RasterTexCoords[0] );

-   }

-   else {

-      ASSERT(ctx->RenderMode == GL_SELECT);

-      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */

-   }

-

-end:

-   _mesa_set_vp_override(ctx, GL_FALSE);

-}

-

-

-static void GLAPIENTRY

-_mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,

-                  GLenum type )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   _mesa_finish(ctx);

-

-   if (MESA_VERBOSE & VERBOSE_API)

-      _mesa_debug(ctx,

-                  "glCopyPixels(%d, %d, %d, %d, %s) // from %s to %s at %d, %d\n",

-                  srcx, srcy, width, height,

-                  _mesa_lookup_enum_by_nr(type),

-                  _mesa_lookup_enum_by_nr(ctx->ReadBuffer->ColorReadBuffer),

-                  _mesa_lookup_enum_by_nr(ctx->DrawBuffer->ColorDrawBuffer[0]),

-                  IROUND(ctx->Current.RasterPos[0]),

-                  IROUND(ctx->Current.RasterPos[1]));

-

-   if (width < 0 || height < 0) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glCopyPixels(width or height < 0)");

-      return;

-   }

-

-   /* Note: more detailed 'type' checking is done by the

-    * _mesa_source/dest_buffer_exists() calls below.  That's where we

-    * check if the stencil buffer exists, etc.

-    */

-   if (type != GL_COLOR &&

-       type != GL_DEPTH &&

-       type != GL_STENCIL &&

-       type != GL_DEPTH_STENCIL) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glCopyPixels(type=%s)",

-                  _mesa_lookup_enum_by_nr(type));

-      return;

-   }

-

-   /* We're not using the current vertex program, and the driver may install

-    * it's own.  Note: this may dirty some state.

-    */

-   _mesa_set_vp_override(ctx, GL_TRUE);

-

-   /* Note: this call does state validation */

-   if (!_mesa_valid_to_render(ctx, "glCopyPixels")) {

-      goto end;      /* the error code was recorded */

-   }

-

-   /* Check read buffer's status (draw buffer was already checked) */

-   if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,

-                  "glCopyPixels(incomplete framebuffer)" );

-      goto end;

-   }

-

-   if (!_mesa_source_buffer_exists(ctx, type) ||

-       !_mesa_dest_buffer_exists(ctx, type)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glCopyPixels(missing source or dest buffer)");

-      goto end;

-   }

-

-   if (!ctx->Current.RasterPosValid || width ==0 || height == 0) {

-      goto end; /* no-op, not an error */

-   }

-

-   if (ctx->RenderMode == GL_RENDER) {

-      /* Round to satisfy conformance tests (matches SGI's OpenGL) */

-      if (width > 0 && height > 0) {

-         GLint destx = IROUND(ctx->Current.RasterPos[0]);

-         GLint desty = IROUND(ctx->Current.RasterPos[1]);

-         ctx->Driver.CopyPixels( ctx, srcx, srcy, width, height, destx, desty,

-                                 type );

-      }

-   }

-   else if (ctx->RenderMode == GL_FEEDBACK) {

-      FLUSH_CURRENT( ctx, 0 );

-      _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_COPY_PIXEL_TOKEN );

-      _mesa_feedback_vertex( ctx, 

-                             ctx->Current.RasterPos,

-                             ctx->Current.RasterColor,

-                             ctx->Current.RasterTexCoords[0] );

-   }

-   else {

-      ASSERT(ctx->RenderMode == GL_SELECT);

-      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */

-   }

-

-end:

-   _mesa_set_vp_override(ctx, GL_FALSE);

-}

-

-

-static void GLAPIENTRY

-_mesa_Bitmap( GLsizei width, GLsizei height,

-              GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,

-              const GLubyte *bitmap )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (width < 0 || height < 0) {

-      _mesa_error( ctx, GL_INVALID_VALUE, "glBitmap(width or height < 0)" );

-      return;

-   }

-

-   if (!ctx->Current.RasterPosValid) {

-      return;    /* do nothing */

-   }

-

-   /* Note: this call does state validation */

-   if (!_mesa_valid_to_render(ctx, "glBitmap")) {

-      /* the error code was recorded */

-      return;

-   }

-

-   if (ctx->RenderMode == GL_RENDER) {

-      /* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */

-      if (width > 0 && height > 0) {

-         const GLfloat epsilon = 0.0001F;

-         GLint x = IFLOOR(ctx->Current.RasterPos[0] + epsilon - xorig);

-         GLint y = IFLOOR(ctx->Current.RasterPos[1] + epsilon - yorig);

-

-         if (ctx->Unpack.BufferObj->Name) {

-            /* unpack from PBO */

-            if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height, 1,

-                                           GL_COLOR_INDEX, GL_BITMAP,

-                                           (GLvoid *) bitmap)) {

-               _mesa_error(ctx, GL_INVALID_OPERATION,

-                           "glBitmap(invalid PBO access)");

-               return;

-            }

-            if (_mesa_bufferobj_mapped(ctx->Unpack.BufferObj)) {

-               /* buffer is mapped - that's an error */

-               _mesa_error(ctx, GL_INVALID_OPERATION,

-                           "glBitmap(PBO is mapped)");

-               return;

-            }

-         }

-

-         ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );

-      }

-   }

-#if _HAVE_FULL_GL

-   else if (ctx->RenderMode == GL_FEEDBACK) {

-      FLUSH_CURRENT(ctx, 0);

-      _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_BITMAP_TOKEN );

-      _mesa_feedback_vertex( ctx,

-                             ctx->Current.RasterPos,

-                             ctx->Current.RasterColor,

-                             ctx->Current.RasterTexCoords[0] );

-   }

-   else {

-      ASSERT(ctx->RenderMode == GL_SELECT);

-      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */

-   }

-#endif

-

-   /* update raster position */

-   ctx->Current.RasterPos[0] += xmove;

-   ctx->Current.RasterPos[1] += ymove;

-}

-

-

-void

-_mesa_init_drawpix_dispatch(struct _glapi_table *disp)

-{

-   SET_Bitmap(disp, _mesa_Bitmap);

-   SET_CopyPixels(disp, _mesa_CopyPixels);

-   SET_DrawPixels(disp, _mesa_DrawPixels);

-}

-

-

-#endif /* FEATURE_drawpix */

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "glheader.h"
+#include "imports.h"
+#include "bufferobj.h"
+#include "context.h"
+#include "drawpix.h"
+#include "enums.h"
+#include "feedback.h"
+#include "framebuffer.h"
+#include "mfeatures.h"
+#include "pbo.h"
+#include "readpix.h"
+#include "state.h"
+#include "dispatch.h"
+
+
+#if FEATURE_drawpix
+
+
+/*
+ * Execute glDrawPixels
+ */
+static void GLAPIENTRY
+_mesa_DrawPixels( GLsizei width, GLsizei height,
+                  GLenum format, GLenum type, const GLvoid *pixels )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glDrawPixels(%d, %d, %s, %s, %p) // to %s at %d, %d\n",
+                  width, height,
+                  _mesa_lookup_enum_by_nr(format),
+                  _mesa_lookup_enum_by_nr(type),
+                  pixels,
+                  _mesa_lookup_enum_by_nr(ctx->DrawBuffer->ColorDrawBuffer[0]),
+                  IROUND(ctx->Current.RasterPos[0]),
+                  IROUND(ctx->Current.RasterPos[1]));
+
+
+   if (width < 0 || height < 0) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glDrawPixels(width or height < 0" );
+      return;
+   }
+
+   /* We're not using the current vertex program, and the driver may install
+    * its own.  Note: this may dirty some state.
+    */
+   _mesa_set_vp_override(ctx, GL_TRUE);
+
+   /* Note: this call does state validation */
+   if (!_mesa_valid_to_render(ctx, "glDrawPixels")) {
+      goto end;      /* the error code was recorded */
+   }
+
+   if (_mesa_error_check_format_type(ctx, format, type, GL_TRUE)) {
+      goto end;      /* the error code was recorded */
+   }
+
+   if (!ctx->Current.RasterPosValid) {
+      goto end;  /* no-op, not an error */
+   }
+
+   if (ctx->RenderMode == GL_RENDER) {
+      if (width > 0 && height > 0) {
+         /* Round, to satisfy conformance tests (matches SGI's OpenGL) */
+         GLint x = IROUND(ctx->Current.RasterPos[0]);
+         GLint y = IROUND(ctx->Current.RasterPos[1]);
+
+         if (ctx->Unpack.BufferObj->Name) {
+            /* unpack from PBO */
+            if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height, 1,
+                                           format, type, pixels)) {
+               _mesa_error(ctx, GL_INVALID_OPERATION,
+                           "glDrawPixels(invalid PBO access)");
+               goto end;
+            }
+            if (_mesa_bufferobj_mapped(ctx->Unpack.BufferObj)) {
+               /* buffer is mapped - that's an error */
+               _mesa_error(ctx, GL_INVALID_OPERATION,
+                           "glDrawPixels(PBO is mapped)");
+               goto end;
+            }
+         }
+
+         ctx->Driver.DrawPixels(ctx, x, y, width, height, format, type,
+                                &ctx->Unpack, pixels);
+      }
+   }
+   else if (ctx->RenderMode == GL_FEEDBACK) {
+      /* Feedback the current raster pos info */
+      FLUSH_CURRENT( ctx, 0 );
+      _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );
+      _mesa_feedback_vertex( ctx,
+                             ctx->Current.RasterPos,
+                             ctx->Current.RasterColor,
+                             ctx->Current.RasterTexCoords[0] );
+   }
+   else {
+      ASSERT(ctx->RenderMode == GL_SELECT);
+      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */
+   }
+
+end:
+   _mesa_set_vp_override(ctx, GL_FALSE);
+}
+
+
+static void GLAPIENTRY
+_mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
+                  GLenum type )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   _mesa_finish(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx,
+                  "glCopyPixels(%d, %d, %d, %d, %s) // from %s to %s at %d, %d\n",
+                  srcx, srcy, width, height,
+                  _mesa_lookup_enum_by_nr(type),
+                  _mesa_lookup_enum_by_nr(ctx->ReadBuffer->ColorReadBuffer),
+                  _mesa_lookup_enum_by_nr(ctx->DrawBuffer->ColorDrawBuffer[0]),
+                  IROUND(ctx->Current.RasterPos[0]),
+                  IROUND(ctx->Current.RasterPos[1]));
+
+   if (width < 0 || height < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glCopyPixels(width or height < 0)");
+      return;
+   }
+
+   /* Note: more detailed 'type' checking is done by the
+    * _mesa_source/dest_buffer_exists() calls below.  That's where we
+    * check if the stencil buffer exists, etc.
+    */
+   if (type != GL_COLOR &&
+       type != GL_DEPTH &&
+       type != GL_STENCIL &&
+       type != GL_DEPTH_STENCIL) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glCopyPixels(type=%s)",
+                  _mesa_lookup_enum_by_nr(type));
+      return;
+   }
+
+   /* We're not using the current vertex program, and the driver may install
+    * it's own.  Note: this may dirty some state.
+    */
+   _mesa_set_vp_override(ctx, GL_TRUE);
+
+   /* Note: this call does state validation */
+   if (!_mesa_valid_to_render(ctx, "glCopyPixels")) {
+      goto end;      /* the error code was recorded */
+   }
+
+   /* Check read buffer's status (draw buffer was already checked) */
+   if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+                  "glCopyPixels(incomplete framebuffer)" );
+      goto end;
+   }
+
+   if (!_mesa_source_buffer_exists(ctx, type) ||
+       !_mesa_dest_buffer_exists(ctx, type)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glCopyPixels(missing source or dest buffer)");
+      goto end;
+   }
+
+   if (!ctx->Current.RasterPosValid || width ==0 || height == 0) {
+      goto end; /* no-op, not an error */
+   }
+
+   if (ctx->RenderMode == GL_RENDER) {
+      /* Round to satisfy conformance tests (matches SGI's OpenGL) */
+      if (width > 0 && height > 0) {
+         GLint destx = IROUND(ctx->Current.RasterPos[0]);
+         GLint desty = IROUND(ctx->Current.RasterPos[1]);
+         ctx->Driver.CopyPixels( ctx, srcx, srcy, width, height, destx, desty,
+                                 type );
+      }
+   }
+   else if (ctx->RenderMode == GL_FEEDBACK) {
+      FLUSH_CURRENT( ctx, 0 );
+      _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_COPY_PIXEL_TOKEN );
+      _mesa_feedback_vertex( ctx, 
+                             ctx->Current.RasterPos,
+                             ctx->Current.RasterColor,
+                             ctx->Current.RasterTexCoords[0] );
+   }
+   else {
+      ASSERT(ctx->RenderMode == GL_SELECT);
+      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */
+   }
+
+end:
+   _mesa_set_vp_override(ctx, GL_FALSE);
+}
+
+
+static void GLAPIENTRY
+_mesa_Bitmap( GLsizei width, GLsizei height,
+              GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
+              const GLubyte *bitmap )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (width < 0 || height < 0) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glBitmap(width or height < 0)" );
+      return;
+   }
+
+   if (!ctx->Current.RasterPosValid) {
+      return;    /* do nothing */
+   }
+
+   /* Note: this call does state validation */
+   if (!_mesa_valid_to_render(ctx, "glBitmap")) {
+      /* the error code was recorded */
+      return;
+   }
+
+   if (ctx->RenderMode == GL_RENDER) {
+      /* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */
+      if (width > 0 && height > 0) {
+         const GLfloat epsilon = 0.0001F;
+         GLint x = IFLOOR(ctx->Current.RasterPos[0] + epsilon - xorig);
+         GLint y = IFLOOR(ctx->Current.RasterPos[1] + epsilon - yorig);
+
+         if (ctx->Unpack.BufferObj->Name) {
+            /* unpack from PBO */
+            if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height, 1,
+                                           GL_COLOR_INDEX, GL_BITMAP,
+                                           (GLvoid *) bitmap)) {
+               _mesa_error(ctx, GL_INVALID_OPERATION,
+                           "glBitmap(invalid PBO access)");
+               return;
+            }
+            if (_mesa_bufferobj_mapped(ctx->Unpack.BufferObj)) {
+               /* buffer is mapped - that's an error */
+               _mesa_error(ctx, GL_INVALID_OPERATION,
+                           "glBitmap(PBO is mapped)");
+               return;
+            }
+         }
+
+         ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );
+      }
+   }
+#if _HAVE_FULL_GL
+   else if (ctx->RenderMode == GL_FEEDBACK) {
+      FLUSH_CURRENT(ctx, 0);
+      _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_BITMAP_TOKEN );
+      _mesa_feedback_vertex( ctx,
+                             ctx->Current.RasterPos,
+                             ctx->Current.RasterColor,
+                             ctx->Current.RasterTexCoords[0] );
+   }
+   else {
+      ASSERT(ctx->RenderMode == GL_SELECT);
+      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */
+   }
+#endif
+
+   /* update raster position */
+   ctx->Current.RasterPos[0] += xmove;
+   ctx->Current.RasterPos[1] += ymove;
+}
+
+
+void
+_mesa_init_drawpix_dispatch(struct _glapi_table *disp)
+{
+   SET_Bitmap(disp, _mesa_Bitmap);
+   SET_CopyPixels(disp, _mesa_CopyPixels);
+   SET_DrawPixels(disp, _mesa_DrawPixels);
+}
+
+
+#endif /* FEATURE_drawpix */
diff --git a/mesalib/src/mesa/main/enable.c b/mesalib/src/mesa/main/enable.c
index 231278bee..f24709241 100644
--- a/mesalib/src/mesa/main/enable.c
+++ b/mesalib/src/mesa/main/enable.c
@@ -1,1501 +1,1487 @@
-/**

- * \file enable.c

- * Enable/disable/query GL capabilities.

- */

-

-/*

- * Mesa 3-D graphics library

- * Version:  7.0.3

- *

- * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-#include "glheader.h"

-#include "context.h"

-#include "enable.h"

-#include "light.h"

-#include "simple_list.h"

-#include "mfeatures.h"

-#include "mtypes.h"

-#include "enums.h"

-#include "api_arrayelt.h"

-#include "texstate.h"

-

-

-

-#define CHECK_EXTENSION(EXTNAME, CAP)					\

-   if (!ctx->Extensions.EXTNAME) {					\

-      goto invalid_enum_error;						\

-   }

-

-

-/**

- * Helper to enable/disable client-side state.

- */

-static void

-client_state(struct gl_context *ctx, GLenum cap, GLboolean state)

-{

-   struct gl_array_object *arrayObj = ctx->Array.ArrayObj;

-   GLuint flag;

-   GLboolean *var;

-

-   switch (cap) {

-      case GL_VERTEX_ARRAY:

-         var = &arrayObj->Vertex.Enabled;

-         flag = _NEW_ARRAY_VERTEX;

-         break;

-      case GL_NORMAL_ARRAY:

-         var = &arrayObj->Normal.Enabled;

-         flag = _NEW_ARRAY_NORMAL;

-         break;

-      case GL_COLOR_ARRAY:

-         var = &arrayObj->Color.Enabled;

-         flag = _NEW_ARRAY_COLOR0;

-         break;

-      case GL_INDEX_ARRAY:

-         var = &arrayObj->Index.Enabled;

-         flag = _NEW_ARRAY_INDEX;

-         break;

-      case GL_TEXTURE_COORD_ARRAY:

-         var = &arrayObj->TexCoord[ctx->Array.ActiveTexture].Enabled;

-         flag = _NEW_ARRAY_TEXCOORD(ctx->Array.ActiveTexture);

-         break;

-      case GL_EDGE_FLAG_ARRAY:

-         var = &arrayObj->EdgeFlag.Enabled;

-         flag = _NEW_ARRAY_EDGEFLAG;

-         break;

-      case GL_FOG_COORDINATE_ARRAY_EXT:

-         var = &arrayObj->FogCoord.Enabled;

-         flag = _NEW_ARRAY_FOGCOORD;

-         break;

-      case GL_SECONDARY_COLOR_ARRAY_EXT:

-         var = &arrayObj->SecondaryColor.Enabled;

-         flag = _NEW_ARRAY_COLOR1;

-         break;

-

-#if FEATURE_point_size_array

-      case GL_POINT_SIZE_ARRAY_OES:

-         var = &arrayObj->PointSize.Enabled;

-         flag = _NEW_ARRAY_POINT_SIZE;

-         break;

-#endif

-

-#if FEATURE_NV_vertex_program

-      case GL_VERTEX_ATTRIB_ARRAY0_NV:

-      case GL_VERTEX_ATTRIB_ARRAY1_NV:

-      case GL_VERTEX_ATTRIB_ARRAY2_NV:

-      case GL_VERTEX_ATTRIB_ARRAY3_NV:

-      case GL_VERTEX_ATTRIB_ARRAY4_NV:

-      case GL_VERTEX_ATTRIB_ARRAY5_NV:

-      case GL_VERTEX_ATTRIB_ARRAY6_NV:

-      case GL_VERTEX_ATTRIB_ARRAY7_NV:

-      case GL_VERTEX_ATTRIB_ARRAY8_NV:

-      case GL_VERTEX_ATTRIB_ARRAY9_NV:

-      case GL_VERTEX_ATTRIB_ARRAY10_NV:

-      case GL_VERTEX_ATTRIB_ARRAY11_NV:

-      case GL_VERTEX_ATTRIB_ARRAY12_NV:

-      case GL_VERTEX_ATTRIB_ARRAY13_NV:

-      case GL_VERTEX_ATTRIB_ARRAY14_NV:

-      case GL_VERTEX_ATTRIB_ARRAY15_NV:

-         CHECK_EXTENSION(NV_vertex_program, cap);

-         {

-            GLint n = (GLint) cap - GL_VERTEX_ATTRIB_ARRAY0_NV;

-            ASSERT(n < Elements(ctx->Array.ArrayObj->VertexAttrib));

-            var = &arrayObj->VertexAttrib[n].Enabled;

-            flag = _NEW_ARRAY_ATTRIB(n);

-         }

-         break;

-#endif /* FEATURE_NV_vertex_program */

-

-      /* GL_NV_primitive_restart */

-      case GL_PRIMITIVE_RESTART_NV:

-	 if (!ctx->Extensions.NV_primitive_restart) {

-            goto invalid_enum_error;

-         }

-         var = &ctx->Array.PrimitiveRestart;

-         flag = 0;

-         break;

-

-      default:

-         goto invalid_enum_error;

-   }

-

-   if (*var == state)

-      return;

-

-   FLUSH_VERTICES(ctx, _NEW_ARRAY);

-   ctx->Array.NewState |= flag;

-

-   _ae_invalidate_state(ctx, _NEW_ARRAY);

-

-   *var = state;

-

-   if (state)

-      ctx->Array.ArrayObj->_Enabled |= flag;

-   else

-      ctx->Array.ArrayObj->_Enabled &= ~flag;

-

-   if (ctx->Driver.Enable) {

-      ctx->Driver.Enable( ctx, cap, state );

-   }

-

-   return;

-

-invalid_enum_error:

-   _mesa_error(ctx, GL_INVALID_ENUM, "gl%sClientState(0x%x)",

-               state ? "Enable" : "Disable", cap);

-}

-

-

-/**

- * Enable GL capability.

- * \param cap  state to enable/disable.

- *

- * Get's the current context, assures that we're outside glBegin()/glEnd() and

- * calls client_state().

- */

-void GLAPIENTRY

-_mesa_EnableClientState( GLenum cap )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-   client_state( ctx, cap, GL_TRUE );

-}

-

-

-/**

- * Disable GL capability.

- * \param cap  state to enable/disable.

- *

- * Get's the current context, assures that we're outside glBegin()/glEnd() and

- * calls client_state().

- */

-void GLAPIENTRY

-_mesa_DisableClientState( GLenum cap )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-   client_state( ctx, cap, GL_FALSE );

-}

-

-

-#undef CHECK_EXTENSION

-#define CHECK_EXTENSION(EXTNAME, CAP)					\

-   if (!ctx->Extensions.EXTNAME) {					\

-      goto invalid_enum_error;						\

-   }

-

-#define CHECK_EXTENSION2(EXT1, EXT2, CAP)				\

-   if (!ctx->Extensions.EXT1 && !ctx->Extensions.EXT2) {		\

-      goto invalid_enum_error;						\

-   }

-

-

-

-/**

- * Return pointer to current texture unit for setting/getting coordinate

- * state.

- * Note that we'll set GL_INVALID_OPERATION if the active texture unit is

- * higher than the number of supported coordinate units.  And we'll return NULL.

- */

-static struct gl_texture_unit *

-get_texcoord_unit(struct gl_context *ctx)

-{

-   if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glEnable/Disable(texcoord unit)");

-      return NULL;

-   }

-   else {

-      return &ctx->Texture.Unit[ctx->Texture.CurrentUnit];

-   }

-}

-

-

-/**

- * Helper function to enable or disable a texture target.

- * \param bit  one of the TEXTURE_x_BIT values

- * \return GL_TRUE if state is changing or GL_FALSE if no change

- */

-static GLboolean

-enable_texture(struct gl_context *ctx, GLboolean state, GLbitfield texBit)

-{

-   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);

-   const GLbitfield newenabled = state

-      ? (texUnit->Enabled | texBit) : (texUnit->Enabled & ~texBit);

-

-   if (texUnit->Enabled == newenabled)

-       return GL_FALSE;

-

-   FLUSH_VERTICES(ctx, _NEW_TEXTURE);

-   texUnit->Enabled = newenabled;

-   return GL_TRUE;

-}

-

-

-/**

- * Helper function to enable or disable state.

- *

- * \param ctx GL context.

- * \param cap  the state to enable/disable

- * \param state whether to enable or disable the specified capability.

- *

- * Updates the current context and flushes the vertices as needed. For

- * capabilities associated with extensions it verifies that those extensions

- * are effectivly present before updating. Notifies the driver via

- * dd_function_table::Enable.

- */

-void

-_mesa_set_enable(struct gl_context *ctx, GLenum cap, GLboolean state)

-{

-   if (MESA_VERBOSE & VERBOSE_API)

-      _mesa_debug(ctx, "%s %s (newstate is %x)\n",

-                  state ? "glEnable" : "glDisable",

-                  _mesa_lookup_enum_by_nr(cap),

-                  ctx->NewState);

-

-   switch (cap) {

-      case GL_ALPHA_TEST:

-         if (ctx->Color.AlphaEnabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_COLOR);

-         ctx->Color.AlphaEnabled = state;

-         break;

-      case GL_AUTO_NORMAL:

-         if (ctx->Eval.AutoNormal == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.AutoNormal = state;

-         break;

-      case GL_BLEND:

-         {

-            GLbitfield newEnabled = state * ((1 << ctx->Const.MaxDrawBuffers) - 1);

-            if (newEnabled != ctx->Color.BlendEnabled) {

-               FLUSH_VERTICES(ctx, _NEW_COLOR);

-               ctx->Color.BlendEnabled = newEnabled;

-            }

-         }

-         break;

-#if FEATURE_userclip

-      case GL_CLIP_PLANE0:

-      case GL_CLIP_PLANE1:

-      case GL_CLIP_PLANE2:

-      case GL_CLIP_PLANE3:

-      case GL_CLIP_PLANE4:

-      case GL_CLIP_PLANE5:

-         {

-            const GLuint p = cap - GL_CLIP_PLANE0;

-

-            if ((ctx->Transform.ClipPlanesEnabled & (1 << p)) == ((GLuint) state << p))

-               return;

-

-            FLUSH_VERTICES(ctx, _NEW_TRANSFORM);

-

-            if (state) {

-               ctx->Transform.ClipPlanesEnabled |= (1 << p);

-

-               if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))

-                  _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );

-

-               /* This derived state also calculated in clip.c and

-                * from _mesa_update_state() on changes to EyeUserPlane

-                * and ctx->ProjectionMatrix respectively.

-                */

-               _mesa_transform_vector( ctx->Transform._ClipUserPlane[p],

-                                    ctx->Transform.EyeUserPlane[p],

-                                    ctx->ProjectionMatrixStack.Top->inv );

-            }

-            else {

-               ctx->Transform.ClipPlanesEnabled &= ~(1 << p);

-            }               

-         }

-         break;

-#endif

-      case GL_COLOR_MATERIAL:

-         if (ctx->Light.ColorMaterialEnabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_LIGHT);

-         FLUSH_CURRENT(ctx, 0);

-         ctx->Light.ColorMaterialEnabled = state;

-         if (state) {

-            _mesa_update_color_material( ctx,

-                                  ctx->Current.Attrib[VERT_ATTRIB_COLOR0] );

-         }

-         break;

-      case GL_CULL_FACE:

-         if (ctx->Polygon.CullFlag == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_POLYGON);

-         ctx->Polygon.CullFlag = state;

-         break;

-      case GL_DEPTH_TEST:

-         if (ctx->Depth.Test == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_DEPTH);

-         ctx->Depth.Test = state;

-         break;

-      case GL_DITHER:

-         if (ctx->Color.DitherFlag == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_COLOR);

-         ctx->Color.DitherFlag = state;

-         break;

-      case GL_FOG:

-         if (ctx->Fog.Enabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_FOG);

-         ctx->Fog.Enabled = state;

-         break;

-      case GL_LIGHT0:

-      case GL_LIGHT1:

-      case GL_LIGHT2:

-      case GL_LIGHT3:

-      case GL_LIGHT4:

-      case GL_LIGHT5:

-      case GL_LIGHT6:

-      case GL_LIGHT7:

-         if (ctx->Light.Light[cap-GL_LIGHT0].Enabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_LIGHT);

-         ctx->Light.Light[cap-GL_LIGHT0].Enabled = state;

-         if (state) {

-            insert_at_tail(&ctx->Light.EnabledList,

-                           &ctx->Light.Light[cap-GL_LIGHT0]);

-         }

-         else {

-            remove_from_list(&ctx->Light.Light[cap-GL_LIGHT0]);

-         }

-         break;

-      case GL_LIGHTING:

-         if (ctx->Light.Enabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_LIGHT);

-         ctx->Light.Enabled = state;

-         if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)

-            ctx->_TriangleCaps |= DD_TRI_LIGHT_TWOSIDE;

-         else

-            ctx->_TriangleCaps &= ~DD_TRI_LIGHT_TWOSIDE;

-         break;

-      case GL_LINE_SMOOTH:

-         if (ctx->Line.SmoothFlag == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_LINE);

-         ctx->Line.SmoothFlag = state;

-         ctx->_TriangleCaps ^= DD_LINE_SMOOTH;

-         break;

-      case GL_LINE_STIPPLE:

-         if (ctx->Line.StippleFlag == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_LINE);

-         ctx->Line.StippleFlag = state;

-         ctx->_TriangleCaps ^= DD_LINE_STIPPLE;

-         break;

-      case GL_INDEX_LOGIC_OP:

-         if (ctx->Color.IndexLogicOpEnabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_COLOR);

-         ctx->Color.IndexLogicOpEnabled = state;

-         break;

-      case GL_COLOR_LOGIC_OP:

-         if (ctx->Color.ColorLogicOpEnabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_COLOR);

-         ctx->Color.ColorLogicOpEnabled = state;

-         break;

-      case GL_MAP1_COLOR_4:

-         if (ctx->Eval.Map1Color4 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map1Color4 = state;

-         break;

-      case GL_MAP1_INDEX:

-         if (ctx->Eval.Map1Index == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map1Index = state;

-         break;

-      case GL_MAP1_NORMAL:

-         if (ctx->Eval.Map1Normal == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map1Normal = state;

-         break;

-      case GL_MAP1_TEXTURE_COORD_1:

-         if (ctx->Eval.Map1TextureCoord1 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map1TextureCoord1 = state;

-         break;

-      case GL_MAP1_TEXTURE_COORD_2:

-         if (ctx->Eval.Map1TextureCoord2 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map1TextureCoord2 = state;

-         break;

-      case GL_MAP1_TEXTURE_COORD_3:

-         if (ctx->Eval.Map1TextureCoord3 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map1TextureCoord3 = state;

-         break;

-      case GL_MAP1_TEXTURE_COORD_4:

-         if (ctx->Eval.Map1TextureCoord4 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map1TextureCoord4 = state;

-         break;

-      case GL_MAP1_VERTEX_3:

-         if (ctx->Eval.Map1Vertex3 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map1Vertex3 = state;

-         break;

-      case GL_MAP1_VERTEX_4:

-         if (ctx->Eval.Map1Vertex4 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map1Vertex4 = state;

-         break;

-      case GL_MAP2_COLOR_4:

-         if (ctx->Eval.Map2Color4 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map2Color4 = state;

-         break;

-      case GL_MAP2_INDEX:

-         if (ctx->Eval.Map2Index == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map2Index = state;

-         break;

-      case GL_MAP2_NORMAL:

-         if (ctx->Eval.Map2Normal == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map2Normal = state;

-         break;

-      case GL_MAP2_TEXTURE_COORD_1:

-         if (ctx->Eval.Map2TextureCoord1 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map2TextureCoord1 = state;

-         break;

-      case GL_MAP2_TEXTURE_COORD_2:

-         if (ctx->Eval.Map2TextureCoord2 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map2TextureCoord2 = state;

-         break;

-      case GL_MAP2_TEXTURE_COORD_3:

-         if (ctx->Eval.Map2TextureCoord3 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map2TextureCoord3 = state;

-         break;

-      case GL_MAP2_TEXTURE_COORD_4:

-         if (ctx->Eval.Map2TextureCoord4 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map2TextureCoord4 = state;

-         break;

-      case GL_MAP2_VERTEX_3:

-         if (ctx->Eval.Map2Vertex3 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map2Vertex3 = state;

-         break;

-      case GL_MAP2_VERTEX_4:

-         if (ctx->Eval.Map2Vertex4 == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_EVAL);

-         ctx->Eval.Map2Vertex4 = state;

-         break;

-      case GL_NORMALIZE:

-         if (ctx->Transform.Normalize == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_TRANSFORM);

-         ctx->Transform.Normalize = state;

-         break;

-      case GL_POINT_SMOOTH:

-         if (ctx->Point.SmoothFlag == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_POINT);

-         ctx->Point.SmoothFlag = state;

-         ctx->_TriangleCaps ^= DD_POINT_SMOOTH;

-         break;

-      case GL_POLYGON_SMOOTH:

-         if (ctx->Polygon.SmoothFlag == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_POLYGON);

-         ctx->Polygon.SmoothFlag = state;

-         ctx->_TriangleCaps ^= DD_TRI_SMOOTH;

-         break;

-      case GL_POLYGON_STIPPLE:

-         if (ctx->Polygon.StippleFlag == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_POLYGON);

-         ctx->Polygon.StippleFlag = state;

-         ctx->_TriangleCaps ^= DD_TRI_STIPPLE;

-         break;

-      case GL_POLYGON_OFFSET_POINT:

-         if (ctx->Polygon.OffsetPoint == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_POLYGON);

-         ctx->Polygon.OffsetPoint = state;

-         break;

-      case GL_POLYGON_OFFSET_LINE:

-         if (ctx->Polygon.OffsetLine == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_POLYGON);

-         ctx->Polygon.OffsetLine = state;

-         break;

-      case GL_POLYGON_OFFSET_FILL:

-         /*case GL_POLYGON_OFFSET_EXT:*/

-         if (ctx->Polygon.OffsetFill == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_POLYGON);

-         ctx->Polygon.OffsetFill = state;

-         break;

-      case GL_RESCALE_NORMAL_EXT:

-         if (ctx->Transform.RescaleNormals == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_TRANSFORM);

-         ctx->Transform.RescaleNormals = state;

-         break;

-      case GL_SCISSOR_TEST:

-         if (ctx->Scissor.Enabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_SCISSOR);

-         ctx->Scissor.Enabled = state;

-         break;

-      case GL_SHARED_TEXTURE_PALETTE_EXT:

-         if (ctx->Texture.SharedPalette == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_TEXTURE);

-         ctx->Texture.SharedPalette = state;

-         break;

-      case GL_STENCIL_TEST:

-         if (ctx->Stencil.Enabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_STENCIL);

-         ctx->Stencil.Enabled = state;

-         break;

-      case GL_TEXTURE_1D:

-         if (!enable_texture(ctx, state, TEXTURE_1D_BIT)) {

-            return;

-         }

-         break;

-      case GL_TEXTURE_2D:

-         if (!enable_texture(ctx, state, TEXTURE_2D_BIT)) {

-            return;

-         }

-         break;

-      case GL_TEXTURE_3D:

-         if (!enable_texture(ctx, state, TEXTURE_3D_BIT)) {

-            return;

-         }

-         break;

-      case GL_TEXTURE_GEN_Q:

-         {

-            struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);

-            if (texUnit) {

-               GLuint newenabled = texUnit->TexGenEnabled & ~Q_BIT;

-               if (state)

-                  newenabled |= Q_BIT;

-               if (texUnit->TexGenEnabled == newenabled)

-                  return;

-               FLUSH_VERTICES(ctx, _NEW_TEXTURE);

-               texUnit->TexGenEnabled = newenabled;

-            }

-         }

-         break;

-      case GL_TEXTURE_GEN_R:

-         {

-            struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);

-            if (texUnit) {

-               GLuint newenabled = texUnit->TexGenEnabled & ~R_BIT;

-               if (state)

-                  newenabled |= R_BIT;

-               if (texUnit->TexGenEnabled == newenabled)

-                  return;

-               FLUSH_VERTICES(ctx, _NEW_TEXTURE);

-               texUnit->TexGenEnabled = newenabled;

-            }

-         }

-         break;

-      case GL_TEXTURE_GEN_S:

-         {

-            struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);

-            if (texUnit) {

-               GLuint newenabled = texUnit->TexGenEnabled & ~S_BIT;

-               if (state)

-                  newenabled |= S_BIT;

-               if (texUnit->TexGenEnabled == newenabled)

-                  return;

-               FLUSH_VERTICES(ctx, _NEW_TEXTURE);

-               texUnit->TexGenEnabled = newenabled;

-            }

-         }

-         break;

-      case GL_TEXTURE_GEN_T:

-         {

-            struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);

-            if (texUnit) {

-               GLuint newenabled = texUnit->TexGenEnabled & ~T_BIT;

-               if (state)

-                  newenabled |= T_BIT;

-               if (texUnit->TexGenEnabled == newenabled)

-                  return;

-               FLUSH_VERTICES(ctx, _NEW_TEXTURE);

-               texUnit->TexGenEnabled = newenabled;

-            }

-         }

-         break;

-

-#if FEATURE_ES1

-      case GL_TEXTURE_GEN_STR_OES:

-	 /* disable S, T, and R at the same time */

-	 {

-            struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);

-            if (texUnit) {

-               GLuint newenabled =

-		  texUnit->TexGenEnabled & ~STR_BITS;

-               if (state)

-                  newenabled |= STR_BITS;

-               if (texUnit->TexGenEnabled == newenabled)

-                  return;

-               FLUSH_VERTICES(ctx, _NEW_TEXTURE);

-               texUnit->TexGenEnabled = newenabled;

-            }

-         }

-         break;

-#endif

-

-      /*

-       * CLIENT STATE!!!

-       */

-      case GL_VERTEX_ARRAY:

-      case GL_NORMAL_ARRAY:

-      case GL_COLOR_ARRAY:

-      case GL_INDEX_ARRAY:

-      case GL_TEXTURE_COORD_ARRAY:

-      case GL_EDGE_FLAG_ARRAY:

-      case GL_FOG_COORDINATE_ARRAY_EXT:

-      case GL_SECONDARY_COLOR_ARRAY_EXT:

-      case GL_POINT_SIZE_ARRAY_OES:

-         client_state( ctx, cap, state );

-         return;

-

-      /* GL_SGI_texture_color_table */

-      case GL_TEXTURE_COLOR_TABLE_SGI:

-         CHECK_EXTENSION(SGI_texture_color_table, cap);

-         if (ctx->Texture.Unit[ctx->Texture.CurrentUnit].ColorTableEnabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_TEXTURE);

-         ctx->Texture.Unit[ctx->Texture.CurrentUnit].ColorTableEnabled = state;

-         break;

-

-      /* GL_ARB_texture_cube_map */

-      case GL_TEXTURE_CUBE_MAP_ARB:

-         CHECK_EXTENSION(ARB_texture_cube_map, cap);

-         if (!enable_texture(ctx, state, TEXTURE_CUBE_BIT)) {

-            return;

-         }

-         break;

-

-      /* GL_EXT_secondary_color */

-      case GL_COLOR_SUM_EXT:

-         CHECK_EXTENSION2(EXT_secondary_color, ARB_vertex_program, cap);

-         if (ctx->Fog.ColorSumEnabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_FOG);

-         ctx->Fog.ColorSumEnabled = state;

-         break;

-

-      /* GL_ARB_multisample */

-      case GL_MULTISAMPLE_ARB:

-         if (ctx->Multisample.Enabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);

-         ctx->Multisample.Enabled = state;

-         break;

-      case GL_SAMPLE_ALPHA_TO_COVERAGE_ARB:

-         if (ctx->Multisample.SampleAlphaToCoverage == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);

-         ctx->Multisample.SampleAlphaToCoverage = state;

-         break;

-      case GL_SAMPLE_ALPHA_TO_ONE_ARB:

-         if (ctx->Multisample.SampleAlphaToOne == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);

-         ctx->Multisample.SampleAlphaToOne = state;

-         break;

-      case GL_SAMPLE_COVERAGE_ARB:

-         if (ctx->Multisample.SampleCoverage == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);

-         ctx->Multisample.SampleCoverage = state;

-         break;

-      case GL_SAMPLE_COVERAGE_INVERT_ARB:

-         if (ctx->Multisample.SampleCoverageInvert == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);

-         ctx->Multisample.SampleCoverageInvert = state;

-         break;

-

-      /* GL_IBM_rasterpos_clip */

-      case GL_RASTER_POSITION_UNCLIPPED_IBM:

-         CHECK_EXTENSION(IBM_rasterpos_clip, cap);

-         if (ctx->Transform.RasterPositionUnclipped == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_TRANSFORM);

-         ctx->Transform.RasterPositionUnclipped = state;

-         break;

-

-      /* GL_NV_point_sprite */

-      case GL_POINT_SPRITE_NV:

-         CHECK_EXTENSION2(NV_point_sprite, ARB_point_sprite, cap);

-         if (ctx->Point.PointSprite == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_POINT);

-         ctx->Point.PointSprite = state;

-         break;

-

-#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program

-      case GL_VERTEX_PROGRAM_ARB:

-         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program, cap);

-         if (ctx->VertexProgram.Enabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_PROGRAM); 

-         ctx->VertexProgram.Enabled = state;

-         break;

-      case GL_VERTEX_PROGRAM_POINT_SIZE_ARB:

-         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program, cap);

-         if (ctx->VertexProgram.PointSizeEnabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_PROGRAM);

-         ctx->VertexProgram.PointSizeEnabled = state;

-         break;

-      case GL_VERTEX_PROGRAM_TWO_SIDE_ARB:

-         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program, cap);

-         if (ctx->VertexProgram.TwoSideEnabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_PROGRAM); 

-         ctx->VertexProgram.TwoSideEnabled = state;

-         break;

-#endif

-#if FEATURE_NV_vertex_program

-      case GL_MAP1_VERTEX_ATTRIB0_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB1_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB2_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB3_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB4_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB5_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB6_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB7_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB8_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB9_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB10_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB11_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB12_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB13_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB14_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB15_4_NV:

-         CHECK_EXTENSION(NV_vertex_program, cap);

-         {

-            const GLuint map = (GLuint) (cap - GL_MAP1_VERTEX_ATTRIB0_4_NV);

-            FLUSH_VERTICES(ctx, _NEW_EVAL);

-            ctx->Eval.Map1Attrib[map] = state;

-         }

-         break;

-      case GL_MAP2_VERTEX_ATTRIB0_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB1_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB2_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB3_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB4_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB5_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB6_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB7_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB8_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB9_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB10_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB11_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB12_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB13_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB14_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB15_4_NV:

-         CHECK_EXTENSION(NV_vertex_program, cap);

-         {

-            const GLuint map = (GLuint) (cap - GL_MAP2_VERTEX_ATTRIB0_4_NV);

-            FLUSH_VERTICES(ctx, _NEW_EVAL);

-            ctx->Eval.Map2Attrib[map] = state;

-         }

-         break;

-#endif /* FEATURE_NV_vertex_program */

-

-#if FEATURE_NV_fragment_program

-      case GL_FRAGMENT_PROGRAM_NV:

-         CHECK_EXTENSION(NV_fragment_program, cap);

-         if (ctx->FragmentProgram.Enabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_PROGRAM);

-         ctx->FragmentProgram.Enabled = state;

-         break;

-#endif /* FEATURE_NV_fragment_program */

-

-      /* GL_NV_texture_rectangle */

-      case GL_TEXTURE_RECTANGLE_NV:

-         CHECK_EXTENSION(NV_texture_rectangle, cap);

-         if (!enable_texture(ctx, state, TEXTURE_RECT_BIT)) {

-            return;

-         }

-         break;

-

-      /* GL_EXT_stencil_two_side */

-      case GL_STENCIL_TEST_TWO_SIDE_EXT:

-         CHECK_EXTENSION(EXT_stencil_two_side, cap);

-         if (ctx->Stencil.TestTwoSide == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_STENCIL);

-         ctx->Stencil.TestTwoSide = state;

-         if (state) {

-            ctx->Stencil._BackFace = 2;

-            ctx->_TriangleCaps |= DD_TRI_TWOSTENCIL;

-         } else {

-            ctx->Stencil._BackFace = 1;

-            ctx->_TriangleCaps &= ~DD_TRI_TWOSTENCIL;

-         }

-         break;

-

-#if FEATURE_ARB_fragment_program

-      case GL_FRAGMENT_PROGRAM_ARB:

-         CHECK_EXTENSION(ARB_fragment_program, cap);

-         if (ctx->FragmentProgram.Enabled == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_PROGRAM);

-         ctx->FragmentProgram.Enabled = state;

-         break;

-#endif /* FEATURE_ARB_fragment_program */

-

-      /* GL_EXT_depth_bounds_test */

-      case GL_DEPTH_BOUNDS_TEST_EXT:

-         CHECK_EXTENSION(EXT_depth_bounds_test, cap);

-         if (ctx->Depth.BoundsTest == state)

-            return;

-         FLUSH_VERTICES(ctx, _NEW_DEPTH);

-         ctx->Depth.BoundsTest = state;

-         break;

-

-      case GL_DEPTH_CLAMP:

-         if (ctx->Transform.DepthClamp == state)

-            return;

-	 CHECK_EXTENSION(ARB_depth_clamp, cap);

-         FLUSH_VERTICES(ctx, _NEW_TRANSFORM);

-	 ctx->Transform.DepthClamp = state;

-	 break;

-

-#if FEATURE_ATI_fragment_shader

-      case GL_FRAGMENT_SHADER_ATI:

-        CHECK_EXTENSION(ATI_fragment_shader, cap);

-	if (ctx->ATIFragmentShader.Enabled == state)

-	  return;

-	FLUSH_VERTICES(ctx, _NEW_PROGRAM);

-	ctx->ATIFragmentShader.Enabled = state;

-        break;

-#endif

-

-      /* GL_MESA_texture_array */

-      case GL_TEXTURE_1D_ARRAY_EXT:

-         CHECK_EXTENSION(MESA_texture_array, cap);

-         if (!enable_texture(ctx, state, TEXTURE_1D_ARRAY_BIT)) {

-            return;

-         }

-         break;

-

-      case GL_TEXTURE_2D_ARRAY_EXT:

-         CHECK_EXTENSION(MESA_texture_array, cap);

-         if (!enable_texture(ctx, state, TEXTURE_2D_ARRAY_BIT)) {

-            return;

-         }

-         break;

-

-      case GL_TEXTURE_CUBE_MAP_SEAMLESS:

-	 CHECK_EXTENSION(ARB_seamless_cube_map, cap);

-	 ctx->Texture.CubeMapSeamless = state;

-	 break;

-

-#if FEATURE_EXT_transform_feedback

-      case GL_RASTERIZER_DISCARD:

-	 CHECK_EXTENSION(EXT_transform_feedback, cap);

-         if (ctx->TransformFeedback.RasterDiscard != state) {

-            ctx->TransformFeedback.RasterDiscard = state;

-            FLUSH_VERTICES(ctx, _NEW_TRANSFORM);

-         }

-         break;

-#endif

-

-      /* GL 3.1 primitive restart.  Note: this enum is different from

-       * GL_PRIMITIVE_RESTART_NV (which is client state).

-       */

-      case GL_PRIMITIVE_RESTART:

-         if (ctx->VersionMajor * 10 + ctx->VersionMinor < 31) {

-            goto invalid_enum_error;

-         }

-         if (ctx->Array.PrimitiveRestart != state) {

-            FLUSH_VERTICES(ctx, _NEW_TRANSFORM);

-            ctx->Array.PrimitiveRestart = state;

-         }

-         break;

-

-      /* GL3.0 - GL_framebuffer_sRGB */

-      case GL_FRAMEBUFFER_SRGB_EXT:

-         CHECK_EXTENSION(EXT_framebuffer_sRGB, cap);

-         FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-         ctx->Color.sRGBEnabled = state;

-         break;

-

-      default:

-         goto invalid_enum_error;

-   }

-

-   if (ctx->Driver.Enable) {

-      ctx->Driver.Enable( ctx, cap, state );

-   }

-

-   return;

-

-invalid_enum_error:

-   _mesa_error(ctx, GL_INVALID_ENUM, "gl%s(0x%x)",

-               state ? "Enable" : "Disable", cap);

-}

-

-

-/**

- * Enable GL capability.  Called by glEnable()

- * \param cap  state to enable.

- */

-void GLAPIENTRY

-_mesa_Enable( GLenum cap )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   _mesa_set_enable( ctx, cap, GL_TRUE );

-}

-

-

-/**

- * Disable GL capability.  Called by glDisable()

- * \param cap  state to disable.

- */

-void GLAPIENTRY

-_mesa_Disable( GLenum cap )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   _mesa_set_enable( ctx, cap, GL_FALSE );

-}

-

-

-

-/**

- * Enable/disable an indexed state var.

- */

-void

-_mesa_set_enablei(struct gl_context *ctx, GLenum cap, GLuint index, GLboolean state)

-{

-   ASSERT(state == 0 || state == 1);

-   switch (cap) {

-   case GL_BLEND:

-      if (!ctx->Extensions.EXT_draw_buffers2) {

-         goto invalid_enum_error;

-      }

-      if (index >= ctx->Const.MaxDrawBuffers) {

-         _mesa_error(ctx, GL_INVALID_VALUE, "%s(index=%u)",

-                     state ? "glEnableIndexed" : "glDisableIndexed", index);

-         return;

-      }

-      if (((ctx->Color.BlendEnabled >> index) & 1) != state) {

-         FLUSH_VERTICES(ctx, _NEW_COLOR);

-         if (state)

-            ctx->Color.BlendEnabled |= (1 << index);

-         else

-            ctx->Color.BlendEnabled &= ~(1 << index);

-      }

-      break;

-   default:

-      goto invalid_enum_error;

-   }

-   return;

-

-invalid_enum_error:

-    _mesa_error(ctx, GL_INVALID_ENUM, "%s(cap=%s)",

-                state ? "glEnablei" : "glDisablei",

-                _mesa_lookup_enum_by_nr(cap));

-}

-

-

-void GLAPIENTRY

-_mesa_DisableIndexed( GLenum cap, GLuint index )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-   _mesa_set_enablei(ctx, cap, index, GL_FALSE);

-}

-

-

-void GLAPIENTRY

-_mesa_EnableIndexed( GLenum cap, GLuint index )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-   _mesa_set_enablei(ctx, cap, index, GL_TRUE);

-}

-

-

-GLboolean GLAPIENTRY

-_mesa_IsEnabledIndexed( GLenum cap, GLuint index )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   switch (cap) {

-   case GL_BLEND:

-      if (index >= ctx->Const.MaxDrawBuffers) {

-         _mesa_error(ctx, GL_INVALID_VALUE, "glIsEnabledIndexed(index=%u)",

-                     index);

-         return GL_FALSE;

-      }

-      return (ctx->Color.BlendEnabled >> index) & 1;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM, "glIsEnabledIndexed(cap=%s)",

-                  _mesa_lookup_enum_by_nr(cap));

-      return GL_FALSE;

-   }

-}

-

-

-

-

-#undef CHECK_EXTENSION

-#define CHECK_EXTENSION(EXTNAME)			\

-   if (!ctx->Extensions.EXTNAME) {			\

-      goto invalid_enum_error;				\

-   }

-

-#undef CHECK_EXTENSION2

-#define CHECK_EXTENSION2(EXT1, EXT2)				\

-   if (!ctx->Extensions.EXT1 && !ctx->Extensions.EXT2) {	\

-      goto invalid_enum_error;					\

-   }

-

-

-/**

- * Helper function to determine whether a texture target is enabled.

- */

-static GLboolean

-is_texture_enabled(struct gl_context *ctx, GLbitfield bit)

-{

-   const struct gl_texture_unit *const texUnit =

-       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];

-   return (texUnit->Enabled & bit) ? GL_TRUE : GL_FALSE;

-}

-

-

-/**

- * Return simple enable/disable state.

- *

- * \param cap  state variable to query.

- *

- * Returns the state of the specified capability from the current GL context.

- * For the capabilities associated with extensions verifies that those

- * extensions are effectively present before reporting.

- */

-GLboolean GLAPIENTRY

-_mesa_IsEnabled( GLenum cap )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   switch (cap) {

-      case GL_ALPHA_TEST:

-         return ctx->Color.AlphaEnabled;

-      case GL_AUTO_NORMAL:

-	 return ctx->Eval.AutoNormal;

-      case GL_BLEND:

-         return ctx->Color.BlendEnabled & 1;  /* return state for buffer[0] */

-      case GL_CLIP_PLANE0:

-      case GL_CLIP_PLANE1:

-      case GL_CLIP_PLANE2:

-      case GL_CLIP_PLANE3:

-      case GL_CLIP_PLANE4:

-      case GL_CLIP_PLANE5:

-	 return (ctx->Transform.ClipPlanesEnabled >> (cap - GL_CLIP_PLANE0)) & 1;

-      case GL_COLOR_MATERIAL:

-	 return ctx->Light.ColorMaterialEnabled;

-      case GL_CULL_FACE:

-         return ctx->Polygon.CullFlag;

-      case GL_DEPTH_TEST:

-         return ctx->Depth.Test;

-      case GL_DITHER:

-	 return ctx->Color.DitherFlag;

-      case GL_FOG:

-	 return ctx->Fog.Enabled;

-      case GL_LIGHTING:

-         return ctx->Light.Enabled;

-      case GL_LIGHT0:

-      case GL_LIGHT1:

-      case GL_LIGHT2:

-      case GL_LIGHT3:

-      case GL_LIGHT4:

-      case GL_LIGHT5:

-      case GL_LIGHT6:

-      case GL_LIGHT7:

-         return ctx->Light.Light[cap-GL_LIGHT0].Enabled;

-      case GL_LINE_SMOOTH:

-	 return ctx->Line.SmoothFlag;

-      case GL_LINE_STIPPLE:

-	 return ctx->Line.StippleFlag;

-      case GL_INDEX_LOGIC_OP:

-	 return ctx->Color.IndexLogicOpEnabled;

-      case GL_COLOR_LOGIC_OP:

-	 return ctx->Color.ColorLogicOpEnabled;

-      case GL_MAP1_COLOR_4:

-	 return ctx->Eval.Map1Color4;

-      case GL_MAP1_INDEX:

-	 return ctx->Eval.Map1Index;

-      case GL_MAP1_NORMAL:

-	 return ctx->Eval.Map1Normal;

-      case GL_MAP1_TEXTURE_COORD_1:

-	 return ctx->Eval.Map1TextureCoord1;

-      case GL_MAP1_TEXTURE_COORD_2:

-	 return ctx->Eval.Map1TextureCoord2;

-      case GL_MAP1_TEXTURE_COORD_3:

-	 return ctx->Eval.Map1TextureCoord3;

-      case GL_MAP1_TEXTURE_COORD_4:

-	 return ctx->Eval.Map1TextureCoord4;

-      case GL_MAP1_VERTEX_3:

-	 return ctx->Eval.Map1Vertex3;

-      case GL_MAP1_VERTEX_4:

-	 return ctx->Eval.Map1Vertex4;

-      case GL_MAP2_COLOR_4:

-	 return ctx->Eval.Map2Color4;

-      case GL_MAP2_INDEX:

-	 return ctx->Eval.Map2Index;

-      case GL_MAP2_NORMAL:

-	 return ctx->Eval.Map2Normal;

-      case GL_MAP2_TEXTURE_COORD_1:

-	 return ctx->Eval.Map2TextureCoord1;

-      case GL_MAP2_TEXTURE_COORD_2:

-	 return ctx->Eval.Map2TextureCoord2;

-      case GL_MAP2_TEXTURE_COORD_3:

-	 return ctx->Eval.Map2TextureCoord3;

-      case GL_MAP2_TEXTURE_COORD_4:

-	 return ctx->Eval.Map2TextureCoord4;

-      case GL_MAP2_VERTEX_3:

-	 return ctx->Eval.Map2Vertex3;

-      case GL_MAP2_VERTEX_4:

-	 return ctx->Eval.Map2Vertex4;

-      case GL_NORMALIZE:

-	 return ctx->Transform.Normalize;

-      case GL_POINT_SMOOTH:

-	 return ctx->Point.SmoothFlag;

-      case GL_POLYGON_SMOOTH:

-	 return ctx->Polygon.SmoothFlag;

-      case GL_POLYGON_STIPPLE:

-	 return ctx->Polygon.StippleFlag;

-      case GL_POLYGON_OFFSET_POINT:

-	 return ctx->Polygon.OffsetPoint;

-      case GL_POLYGON_OFFSET_LINE:

-	 return ctx->Polygon.OffsetLine;

-      case GL_POLYGON_OFFSET_FILL:

-      /*case GL_POLYGON_OFFSET_EXT:*/

-	 return ctx->Polygon.OffsetFill;

-      case GL_RESCALE_NORMAL_EXT:

-         return ctx->Transform.RescaleNormals;

-      case GL_SCISSOR_TEST:

-	 return ctx->Scissor.Enabled;

-      case GL_SHARED_TEXTURE_PALETTE_EXT:

-         return ctx->Texture.SharedPalette;

-      case GL_STENCIL_TEST:

-	 return ctx->Stencil.Enabled;

-      case GL_TEXTURE_1D:

-         return is_texture_enabled(ctx, TEXTURE_1D_BIT);

-      case GL_TEXTURE_2D:

-         return is_texture_enabled(ctx, TEXTURE_2D_BIT);

-      case GL_TEXTURE_3D:

-         return is_texture_enabled(ctx, TEXTURE_3D_BIT);

-      case GL_TEXTURE_GEN_Q:

-         {

-            const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);

-            if (texUnit) {

-               return (texUnit->TexGenEnabled & Q_BIT) ? GL_TRUE : GL_FALSE;

-            }

-         }

-         return GL_FALSE;

-      case GL_TEXTURE_GEN_R:

-         {

-            const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);

-            if (texUnit) {

-               return (texUnit->TexGenEnabled & R_BIT) ? GL_TRUE : GL_FALSE;

-            }

-         }

-         return GL_FALSE;

-      case GL_TEXTURE_GEN_S:

-         {

-            const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);

-            if (texUnit) {

-               return (texUnit->TexGenEnabled & S_BIT) ? GL_TRUE : GL_FALSE;

-            }

-         }

-         return GL_FALSE;

-      case GL_TEXTURE_GEN_T:

-         {

-            const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);

-            if (texUnit) {

-               return (texUnit->TexGenEnabled & T_BIT) ? GL_TRUE : GL_FALSE;

-            }

-         }

-         return GL_FALSE;

-#if FEATURE_ES1

-      case GL_TEXTURE_GEN_STR_OES:

-	 {

-            const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);

-            if (texUnit) {

-		    return (texUnit->TexGenEnabled & STR_BITS) == STR_BITS ? GL_TRUE : GL_FALSE;

-            }

-         }

-#endif

-

-      /*

-       * CLIENT STATE!!!

-       */

-      case GL_VERTEX_ARRAY:

-         return (ctx->Array.ArrayObj->Vertex.Enabled != 0);

-      case GL_NORMAL_ARRAY:

-         return (ctx->Array.ArrayObj->Normal.Enabled != 0);

-      case GL_COLOR_ARRAY:

-         return (ctx->Array.ArrayObj->Color.Enabled != 0);

-      case GL_INDEX_ARRAY:

-         return (ctx->Array.ArrayObj->Index.Enabled != 0);

-      case GL_TEXTURE_COORD_ARRAY:

-         return (ctx->Array.ArrayObj->TexCoord[ctx->Array.ActiveTexture].Enabled != 0);

-      case GL_EDGE_FLAG_ARRAY:

-         return (ctx->Array.ArrayObj->EdgeFlag.Enabled != 0);

-      case GL_FOG_COORDINATE_ARRAY_EXT:

-         CHECK_EXTENSION(EXT_fog_coord);

-         return (ctx->Array.ArrayObj->FogCoord.Enabled != 0);

-      case GL_SECONDARY_COLOR_ARRAY_EXT:

-         CHECK_EXTENSION(EXT_secondary_color);

-         return (ctx->Array.ArrayObj->SecondaryColor.Enabled != 0);

-#if FEATURE_point_size_array

-      case GL_POINT_SIZE_ARRAY_OES:

-         return (ctx->Array.ArrayObj->PointSize.Enabled != 0);

-#endif

-

-      /* GL_SGI_texture_color_table */

-      case GL_TEXTURE_COLOR_TABLE_SGI:

-         CHECK_EXTENSION(SGI_texture_color_table);

-         return ctx->Texture.Unit[ctx->Texture.CurrentUnit].ColorTableEnabled;

-

-      /* GL_ARB_texture_cube_map */

-      case GL_TEXTURE_CUBE_MAP_ARB:

-         CHECK_EXTENSION(ARB_texture_cube_map);

-         return is_texture_enabled(ctx, TEXTURE_CUBE_BIT);

-

-      /* GL_EXT_secondary_color */

-      case GL_COLOR_SUM_EXT:

-         CHECK_EXTENSION2(EXT_secondary_color, ARB_vertex_program);

-         return ctx->Fog.ColorSumEnabled;

-

-      /* GL_ARB_multisample */

-      case GL_MULTISAMPLE_ARB:

-         return ctx->Multisample.Enabled;

-      case GL_SAMPLE_ALPHA_TO_COVERAGE_ARB:

-         return ctx->Multisample.SampleAlphaToCoverage;

-      case GL_SAMPLE_ALPHA_TO_ONE_ARB:

-         return ctx->Multisample.SampleAlphaToOne;

-      case GL_SAMPLE_COVERAGE_ARB:

-         return ctx->Multisample.SampleCoverage;

-      case GL_SAMPLE_COVERAGE_INVERT_ARB:

-         return ctx->Multisample.SampleCoverageInvert;

-

-      /* GL_IBM_rasterpos_clip */

-      case GL_RASTER_POSITION_UNCLIPPED_IBM:

-         CHECK_EXTENSION(IBM_rasterpos_clip);

-         return ctx->Transform.RasterPositionUnclipped;

-

-      /* GL_NV_point_sprite */

-      case GL_POINT_SPRITE_NV:

-         CHECK_EXTENSION2(NV_point_sprite, ARB_point_sprite)

-         return ctx->Point.PointSprite;

-

-#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program

-      case GL_VERTEX_PROGRAM_ARB:

-         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program);

-         return ctx->VertexProgram.Enabled;

-      case GL_VERTEX_PROGRAM_POINT_SIZE_ARB:

-         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program);

-         return ctx->VertexProgram.PointSizeEnabled;

-      case GL_VERTEX_PROGRAM_TWO_SIDE_ARB:

-         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program);

-         return ctx->VertexProgram.TwoSideEnabled;

-#endif

-#if FEATURE_NV_vertex_program

-      case GL_VERTEX_ATTRIB_ARRAY0_NV:

-      case GL_VERTEX_ATTRIB_ARRAY1_NV:

-      case GL_VERTEX_ATTRIB_ARRAY2_NV:

-      case GL_VERTEX_ATTRIB_ARRAY3_NV:

-      case GL_VERTEX_ATTRIB_ARRAY4_NV:

-      case GL_VERTEX_ATTRIB_ARRAY5_NV:

-      case GL_VERTEX_ATTRIB_ARRAY6_NV:

-      case GL_VERTEX_ATTRIB_ARRAY7_NV:

-      case GL_VERTEX_ATTRIB_ARRAY8_NV:

-      case GL_VERTEX_ATTRIB_ARRAY9_NV:

-      case GL_VERTEX_ATTRIB_ARRAY10_NV:

-      case GL_VERTEX_ATTRIB_ARRAY11_NV:

-      case GL_VERTEX_ATTRIB_ARRAY12_NV:

-      case GL_VERTEX_ATTRIB_ARRAY13_NV:

-      case GL_VERTEX_ATTRIB_ARRAY14_NV:

-      case GL_VERTEX_ATTRIB_ARRAY15_NV:

-         CHECK_EXTENSION(NV_vertex_program);

-         {

-            GLint n = (GLint) cap - GL_VERTEX_ATTRIB_ARRAY0_NV;

-            ASSERT(n < Elements(ctx->Array.ArrayObj->VertexAttrib));

-            return (ctx->Array.ArrayObj->VertexAttrib[n].Enabled != 0);

-         }

-      case GL_MAP1_VERTEX_ATTRIB0_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB1_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB2_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB3_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB4_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB5_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB6_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB7_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB8_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB9_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB10_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB11_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB12_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB13_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB14_4_NV:

-      case GL_MAP1_VERTEX_ATTRIB15_4_NV:

-         CHECK_EXTENSION(NV_vertex_program);

-         {

-            const GLuint map = (GLuint) (cap - GL_MAP1_VERTEX_ATTRIB0_4_NV);

-            return ctx->Eval.Map1Attrib[map];

-         }

-      case GL_MAP2_VERTEX_ATTRIB0_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB1_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB2_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB3_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB4_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB5_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB6_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB7_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB8_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB9_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB10_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB11_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB12_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB13_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB14_4_NV:

-      case GL_MAP2_VERTEX_ATTRIB15_4_NV:

-         CHECK_EXTENSION(NV_vertex_program);

-         {

-            const GLuint map = (GLuint) (cap - GL_MAP2_VERTEX_ATTRIB0_4_NV);

-            return ctx->Eval.Map2Attrib[map];

-         }

-#endif /* FEATURE_NV_vertex_program */

-

-#if FEATURE_NV_fragment_program

-      case GL_FRAGMENT_PROGRAM_NV:

-         CHECK_EXTENSION(NV_fragment_program);

-         return ctx->FragmentProgram.Enabled;

-#endif /* FEATURE_NV_fragment_program */

-

-      /* GL_NV_texture_rectangle */

-      case GL_TEXTURE_RECTANGLE_NV:

-         CHECK_EXTENSION(NV_texture_rectangle);

-         return is_texture_enabled(ctx, TEXTURE_RECT_BIT);

-

-      /* GL_EXT_stencil_two_side */

-      case GL_STENCIL_TEST_TWO_SIDE_EXT:

-         CHECK_EXTENSION(EXT_stencil_two_side);

-         return ctx->Stencil.TestTwoSide;

-

-#if FEATURE_ARB_fragment_program

-      case GL_FRAGMENT_PROGRAM_ARB:

-         return ctx->FragmentProgram.Enabled;

-#endif /* FEATURE_ARB_fragment_program */

-

-      /* GL_EXT_depth_bounds_test */

-      case GL_DEPTH_BOUNDS_TEST_EXT:

-         CHECK_EXTENSION(EXT_depth_bounds_test);

-         return ctx->Depth.BoundsTest;

-

-      /* GL_ARB_depth_clamp */

-      case GL_DEPTH_CLAMP:

-         CHECK_EXTENSION(ARB_depth_clamp);

-         return ctx->Transform.DepthClamp;

-

-#if FEATURE_ATI_fragment_shader

-      case GL_FRAGMENT_SHADER_ATI:

-	 CHECK_EXTENSION(ATI_fragment_shader);

-	 return ctx->ATIFragmentShader.Enabled;

-#endif /* FEATURE_ATI_fragment_shader */

-

-      case GL_TEXTURE_CUBE_MAP_SEAMLESS:

-	 CHECK_EXTENSION(ARB_seamless_cube_map);

-	 return ctx->Texture.CubeMapSeamless;

-

-#if FEATURE_EXT_transform_feedback

-      case GL_RASTERIZER_DISCARD:

-	 CHECK_EXTENSION(EXT_transform_feedback);

-         return ctx->TransformFeedback.RasterDiscard;

-#endif

-

-      /* GL_NV_primitive_restart */

-      case GL_PRIMITIVE_RESTART_NV:

-	 if (!ctx->Extensions.NV_primitive_restart) {

-            goto invalid_enum_error;

-         }

-         return ctx->Array.PrimitiveRestart;

-

-      /* GL 3.1 primitive restart */

-      case GL_PRIMITIVE_RESTART:

-         if (ctx->VersionMajor * 10 + ctx->VersionMinor < 31) {

-            goto invalid_enum_error;

-         }

-         return ctx->Array.PrimitiveRestart;

-

-      /* GL3.0 - GL_framebuffer_sRGB */

-      case GL_FRAMEBUFFER_SRGB_EXT:

-	 CHECK_EXTENSION(EXT_framebuffer_sRGB);

-	 return ctx->Color.sRGBEnabled;

-

-      default:

-         goto invalid_enum_error;

-   }

-

-   return GL_FALSE;

-

-invalid_enum_error:

-   _mesa_error(ctx, GL_INVALID_ENUM, "glIsEnabled(0x%x)", (int) cap);

-   return GL_FALSE;

-}

+/**
+ * \file enable.c
+ * Enable/disable/query GL capabilities.
+ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.0.3
+ *
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "glheader.h"
+#include "context.h"
+#include "enable.h"
+#include "light.h"
+#include "simple_list.h"
+#include "mfeatures.h"
+#include "mtypes.h"
+#include "enums.h"
+#include "api_arrayelt.h"
+#include "texstate.h"
+
+
+
+#define CHECK_EXTENSION(EXTNAME, CAP)					\
+   if (!ctx->Extensions.EXTNAME) {					\
+      goto invalid_enum_error;						\
+   }
+
+
+/**
+ * Helper to enable/disable client-side state.
+ */
+static void
+client_state(struct gl_context *ctx, GLenum cap, GLboolean state)
+{
+   struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
+   GLuint flag;
+   GLboolean *var;
+
+   switch (cap) {
+      case GL_VERTEX_ARRAY:
+         var = &arrayObj->Vertex.Enabled;
+         flag = _NEW_ARRAY_VERTEX;
+         break;
+      case GL_NORMAL_ARRAY:
+         var = &arrayObj->Normal.Enabled;
+         flag = _NEW_ARRAY_NORMAL;
+         break;
+      case GL_COLOR_ARRAY:
+         var = &arrayObj->Color.Enabled;
+         flag = _NEW_ARRAY_COLOR0;
+         break;
+      case GL_INDEX_ARRAY:
+         var = &arrayObj->Index.Enabled;
+         flag = _NEW_ARRAY_INDEX;
+         break;
+      case GL_TEXTURE_COORD_ARRAY:
+         var = &arrayObj->TexCoord[ctx->Array.ActiveTexture].Enabled;
+         flag = _NEW_ARRAY_TEXCOORD(ctx->Array.ActiveTexture);
+         break;
+      case GL_EDGE_FLAG_ARRAY:
+         var = &arrayObj->EdgeFlag.Enabled;
+         flag = _NEW_ARRAY_EDGEFLAG;
+         break;
+      case GL_FOG_COORDINATE_ARRAY_EXT:
+         var = &arrayObj->FogCoord.Enabled;
+         flag = _NEW_ARRAY_FOGCOORD;
+         break;
+      case GL_SECONDARY_COLOR_ARRAY_EXT:
+         var = &arrayObj->SecondaryColor.Enabled;
+         flag = _NEW_ARRAY_COLOR1;
+         break;
+
+#if FEATURE_point_size_array
+      case GL_POINT_SIZE_ARRAY_OES:
+         var = &arrayObj->PointSize.Enabled;
+         flag = _NEW_ARRAY_POINT_SIZE;
+         break;
+#endif
+
+#if FEATURE_NV_vertex_program
+      case GL_VERTEX_ATTRIB_ARRAY0_NV:
+      case GL_VERTEX_ATTRIB_ARRAY1_NV:
+      case GL_VERTEX_ATTRIB_ARRAY2_NV:
+      case GL_VERTEX_ATTRIB_ARRAY3_NV:
+      case GL_VERTEX_ATTRIB_ARRAY4_NV:
+      case GL_VERTEX_ATTRIB_ARRAY5_NV:
+      case GL_VERTEX_ATTRIB_ARRAY6_NV:
+      case GL_VERTEX_ATTRIB_ARRAY7_NV:
+      case GL_VERTEX_ATTRIB_ARRAY8_NV:
+      case GL_VERTEX_ATTRIB_ARRAY9_NV:
+      case GL_VERTEX_ATTRIB_ARRAY10_NV:
+      case GL_VERTEX_ATTRIB_ARRAY11_NV:
+      case GL_VERTEX_ATTRIB_ARRAY12_NV:
+      case GL_VERTEX_ATTRIB_ARRAY13_NV:
+      case GL_VERTEX_ATTRIB_ARRAY14_NV:
+      case GL_VERTEX_ATTRIB_ARRAY15_NV:
+         CHECK_EXTENSION(NV_vertex_program, cap);
+         {
+            GLint n = (GLint) cap - GL_VERTEX_ATTRIB_ARRAY0_NV;
+            ASSERT(n < Elements(ctx->Array.ArrayObj->VertexAttrib));
+            var = &arrayObj->VertexAttrib[n].Enabled;
+            flag = _NEW_ARRAY_ATTRIB(n);
+         }
+         break;
+#endif /* FEATURE_NV_vertex_program */
+
+      /* GL_NV_primitive_restart */
+      case GL_PRIMITIVE_RESTART_NV:
+	 if (!ctx->Extensions.NV_primitive_restart) {
+            goto invalid_enum_error;
+         }
+         var = &ctx->Array.PrimitiveRestart;
+         flag = 0;
+         break;
+
+      default:
+         goto invalid_enum_error;
+   }
+
+   if (*var == state)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_ARRAY);
+   ctx->Array.NewState |= flag;
+
+   _ae_invalidate_state(ctx, _NEW_ARRAY);
+
+   *var = state;
+
+   if (state)
+      ctx->Array.ArrayObj->_Enabled |= flag;
+   else
+      ctx->Array.ArrayObj->_Enabled &= ~flag;
+
+   if (ctx->Driver.Enable) {
+      ctx->Driver.Enable( ctx, cap, state );
+   }
+
+   return;
+
+invalid_enum_error:
+   _mesa_error(ctx, GL_INVALID_ENUM, "gl%sClientState(0x%x)",
+               state ? "Enable" : "Disable", cap);
+}
+
+
+/**
+ * Enable GL capability.
+ * \param cap  state to enable/disable.
+ *
+ * Get's the current context, assures that we're outside glBegin()/glEnd() and
+ * calls client_state().
+ */
+void GLAPIENTRY
+_mesa_EnableClientState( GLenum cap )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   client_state( ctx, cap, GL_TRUE );
+}
+
+
+/**
+ * Disable GL capability.
+ * \param cap  state to enable/disable.
+ *
+ * Get's the current context, assures that we're outside glBegin()/glEnd() and
+ * calls client_state().
+ */
+void GLAPIENTRY
+_mesa_DisableClientState( GLenum cap )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   client_state( ctx, cap, GL_FALSE );
+}
+
+
+#undef CHECK_EXTENSION
+#define CHECK_EXTENSION(EXTNAME, CAP)					\
+   if (!ctx->Extensions.EXTNAME) {					\
+      goto invalid_enum_error;						\
+   }
+
+#define CHECK_EXTENSION2(EXT1, EXT2, CAP)				\
+   if (!ctx->Extensions.EXT1 && !ctx->Extensions.EXT2) {		\
+      goto invalid_enum_error;						\
+   }
+
+
+
+/**
+ * Return pointer to current texture unit for setting/getting coordinate
+ * state.
+ * Note that we'll set GL_INVALID_OPERATION if the active texture unit is
+ * higher than the number of supported coordinate units.  And we'll return NULL.
+ */
+static struct gl_texture_unit *
+get_texcoord_unit(struct gl_context *ctx)
+{
+   if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glEnable/Disable(texcoord unit)");
+      return NULL;
+   }
+   else {
+      return &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   }
+}
+
+
+/**
+ * Helper function to enable or disable a texture target.
+ * \param bit  one of the TEXTURE_x_BIT values
+ * \return GL_TRUE if state is changing or GL_FALSE if no change
+ */
+static GLboolean
+enable_texture(struct gl_context *ctx, GLboolean state, GLbitfield texBit)
+{
+   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
+   const GLbitfield newenabled = state
+      ? (texUnit->Enabled | texBit) : (texUnit->Enabled & ~texBit);
+
+   if (texUnit->Enabled == newenabled)
+       return GL_FALSE;
+
+   FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+   texUnit->Enabled = newenabled;
+   return GL_TRUE;
+}
+
+
+/**
+ * Helper function to enable or disable state.
+ *
+ * \param ctx GL context.
+ * \param cap  the state to enable/disable
+ * \param state whether to enable or disable the specified capability.
+ *
+ * Updates the current context and flushes the vertices as needed. For
+ * capabilities associated with extensions it verifies that those extensions
+ * are effectivly present before updating. Notifies the driver via
+ * dd_function_table::Enable.
+ */
+void
+_mesa_set_enable(struct gl_context *ctx, GLenum cap, GLboolean state)
+{
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "%s %s (newstate is %x)\n",
+                  state ? "glEnable" : "glDisable",
+                  _mesa_lookup_enum_by_nr(cap),
+                  ctx->NewState);
+
+   switch (cap) {
+      case GL_ALPHA_TEST:
+         if (ctx->Color.AlphaEnabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_COLOR);
+         ctx->Color.AlphaEnabled = state;
+         break;
+      case GL_AUTO_NORMAL:
+         if (ctx->Eval.AutoNormal == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.AutoNormal = state;
+         break;
+      case GL_BLEND:
+         {
+            GLbitfield newEnabled = state * ((1 << ctx->Const.MaxDrawBuffers) - 1);
+            if (newEnabled != ctx->Color.BlendEnabled) {
+               FLUSH_VERTICES(ctx, _NEW_COLOR);
+               ctx->Color.BlendEnabled = newEnabled;
+            }
+         }
+         break;
+#if FEATURE_userclip
+      case GL_CLIP_PLANE0:
+      case GL_CLIP_PLANE1:
+      case GL_CLIP_PLANE2:
+      case GL_CLIP_PLANE3:
+      case GL_CLIP_PLANE4:
+      case GL_CLIP_PLANE5:
+         {
+            const GLuint p = cap - GL_CLIP_PLANE0;
+
+            if ((ctx->Transform.ClipPlanesEnabled & (1 << p)) == ((GLuint) state << p))
+               return;
+
+            FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
+
+            if (state) {
+               ctx->Transform.ClipPlanesEnabled |= (1 << p);
+
+               if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
+                  _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
+
+               /* This derived state also calculated in clip.c and
+                * from _mesa_update_state() on changes to EyeUserPlane
+                * and ctx->ProjectionMatrix respectively.
+                */
+               _mesa_transform_vector( ctx->Transform._ClipUserPlane[p],
+                                    ctx->Transform.EyeUserPlane[p],
+                                    ctx->ProjectionMatrixStack.Top->inv );
+            }
+            else {
+               ctx->Transform.ClipPlanesEnabled &= ~(1 << p);
+            }               
+         }
+         break;
+#endif
+      case GL_COLOR_MATERIAL:
+         if (ctx->Light.ColorMaterialEnabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_LIGHT);
+         FLUSH_CURRENT(ctx, 0);
+         ctx->Light.ColorMaterialEnabled = state;
+         if (state) {
+            _mesa_update_color_material( ctx,
+                                  ctx->Current.Attrib[VERT_ATTRIB_COLOR0] );
+         }
+         break;
+      case GL_CULL_FACE:
+         if (ctx->Polygon.CullFlag == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_POLYGON);
+         ctx->Polygon.CullFlag = state;
+         break;
+      case GL_DEPTH_TEST:
+         if (ctx->Depth.Test == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_DEPTH);
+         ctx->Depth.Test = state;
+         break;
+      case GL_DITHER:
+         if (ctx->Color.DitherFlag == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_COLOR);
+         ctx->Color.DitherFlag = state;
+         break;
+      case GL_FOG:
+         if (ctx->Fog.Enabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_FOG);
+         ctx->Fog.Enabled = state;
+         break;
+      case GL_LIGHT0:
+      case GL_LIGHT1:
+      case GL_LIGHT2:
+      case GL_LIGHT3:
+      case GL_LIGHT4:
+      case GL_LIGHT5:
+      case GL_LIGHT6:
+      case GL_LIGHT7:
+         if (ctx->Light.Light[cap-GL_LIGHT0].Enabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_LIGHT);
+         ctx->Light.Light[cap-GL_LIGHT0].Enabled = state;
+         if (state) {
+            insert_at_tail(&ctx->Light.EnabledList,
+                           &ctx->Light.Light[cap-GL_LIGHT0]);
+         }
+         else {
+            remove_from_list(&ctx->Light.Light[cap-GL_LIGHT0]);
+         }
+         break;
+      case GL_LIGHTING:
+         if (ctx->Light.Enabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_LIGHT);
+         ctx->Light.Enabled = state;
+         if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
+            ctx->_TriangleCaps |= DD_TRI_LIGHT_TWOSIDE;
+         else
+            ctx->_TriangleCaps &= ~DD_TRI_LIGHT_TWOSIDE;
+         break;
+      case GL_LINE_SMOOTH:
+         if (ctx->Line.SmoothFlag == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_LINE);
+         ctx->Line.SmoothFlag = state;
+         ctx->_TriangleCaps ^= DD_LINE_SMOOTH;
+         break;
+      case GL_LINE_STIPPLE:
+         if (ctx->Line.StippleFlag == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_LINE);
+         ctx->Line.StippleFlag = state;
+         ctx->_TriangleCaps ^= DD_LINE_STIPPLE;
+         break;
+      case GL_INDEX_LOGIC_OP:
+         if (ctx->Color.IndexLogicOpEnabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_COLOR);
+         ctx->Color.IndexLogicOpEnabled = state;
+         break;
+      case GL_COLOR_LOGIC_OP:
+         if (ctx->Color.ColorLogicOpEnabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_COLOR);
+         ctx->Color.ColorLogicOpEnabled = state;
+         break;
+      case GL_MAP1_COLOR_4:
+         if (ctx->Eval.Map1Color4 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map1Color4 = state;
+         break;
+      case GL_MAP1_INDEX:
+         if (ctx->Eval.Map1Index == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map1Index = state;
+         break;
+      case GL_MAP1_NORMAL:
+         if (ctx->Eval.Map1Normal == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map1Normal = state;
+         break;
+      case GL_MAP1_TEXTURE_COORD_1:
+         if (ctx->Eval.Map1TextureCoord1 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map1TextureCoord1 = state;
+         break;
+      case GL_MAP1_TEXTURE_COORD_2:
+         if (ctx->Eval.Map1TextureCoord2 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map1TextureCoord2 = state;
+         break;
+      case GL_MAP1_TEXTURE_COORD_3:
+         if (ctx->Eval.Map1TextureCoord3 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map1TextureCoord3 = state;
+         break;
+      case GL_MAP1_TEXTURE_COORD_4:
+         if (ctx->Eval.Map1TextureCoord4 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map1TextureCoord4 = state;
+         break;
+      case GL_MAP1_VERTEX_3:
+         if (ctx->Eval.Map1Vertex3 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map1Vertex3 = state;
+         break;
+      case GL_MAP1_VERTEX_4:
+         if (ctx->Eval.Map1Vertex4 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map1Vertex4 = state;
+         break;
+      case GL_MAP2_COLOR_4:
+         if (ctx->Eval.Map2Color4 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map2Color4 = state;
+         break;
+      case GL_MAP2_INDEX:
+         if (ctx->Eval.Map2Index == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map2Index = state;
+         break;
+      case GL_MAP2_NORMAL:
+         if (ctx->Eval.Map2Normal == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map2Normal = state;
+         break;
+      case GL_MAP2_TEXTURE_COORD_1:
+         if (ctx->Eval.Map2TextureCoord1 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map2TextureCoord1 = state;
+         break;
+      case GL_MAP2_TEXTURE_COORD_2:
+         if (ctx->Eval.Map2TextureCoord2 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map2TextureCoord2 = state;
+         break;
+      case GL_MAP2_TEXTURE_COORD_3:
+         if (ctx->Eval.Map2TextureCoord3 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map2TextureCoord3 = state;
+         break;
+      case GL_MAP2_TEXTURE_COORD_4:
+         if (ctx->Eval.Map2TextureCoord4 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map2TextureCoord4 = state;
+         break;
+      case GL_MAP2_VERTEX_3:
+         if (ctx->Eval.Map2Vertex3 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map2Vertex3 = state;
+         break;
+      case GL_MAP2_VERTEX_4:
+         if (ctx->Eval.Map2Vertex4 == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_EVAL);
+         ctx->Eval.Map2Vertex4 = state;
+         break;
+      case GL_NORMALIZE:
+         if (ctx->Transform.Normalize == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
+         ctx->Transform.Normalize = state;
+         break;
+      case GL_POINT_SMOOTH:
+         if (ctx->Point.SmoothFlag == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_POINT);
+         ctx->Point.SmoothFlag = state;
+         ctx->_TriangleCaps ^= DD_POINT_SMOOTH;
+         break;
+      case GL_POLYGON_SMOOTH:
+         if (ctx->Polygon.SmoothFlag == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_POLYGON);
+         ctx->Polygon.SmoothFlag = state;
+         ctx->_TriangleCaps ^= DD_TRI_SMOOTH;
+         break;
+      case GL_POLYGON_STIPPLE:
+         if (ctx->Polygon.StippleFlag == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_POLYGON);
+         ctx->Polygon.StippleFlag = state;
+         ctx->_TriangleCaps ^= DD_TRI_STIPPLE;
+         break;
+      case GL_POLYGON_OFFSET_POINT:
+         if (ctx->Polygon.OffsetPoint == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_POLYGON);
+         ctx->Polygon.OffsetPoint = state;
+         break;
+      case GL_POLYGON_OFFSET_LINE:
+         if (ctx->Polygon.OffsetLine == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_POLYGON);
+         ctx->Polygon.OffsetLine = state;
+         break;
+      case GL_POLYGON_OFFSET_FILL:
+         /*case GL_POLYGON_OFFSET_EXT:*/
+         if (ctx->Polygon.OffsetFill == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_POLYGON);
+         ctx->Polygon.OffsetFill = state;
+         break;
+      case GL_RESCALE_NORMAL_EXT:
+         if (ctx->Transform.RescaleNormals == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
+         ctx->Transform.RescaleNormals = state;
+         break;
+      case GL_SCISSOR_TEST:
+         if (ctx->Scissor.Enabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_SCISSOR);
+         ctx->Scissor.Enabled = state;
+         break;
+      case GL_SHARED_TEXTURE_PALETTE_EXT:
+         if (ctx->Texture.SharedPalette == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+         ctx->Texture.SharedPalette = state;
+         break;
+      case GL_STENCIL_TEST:
+         if (ctx->Stencil.Enabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_STENCIL);
+         ctx->Stencil.Enabled = state;
+         break;
+      case GL_TEXTURE_1D:
+         if (!enable_texture(ctx, state, TEXTURE_1D_BIT)) {
+            return;
+         }
+         break;
+      case GL_TEXTURE_2D:
+         if (!enable_texture(ctx, state, TEXTURE_2D_BIT)) {
+            return;
+         }
+         break;
+      case GL_TEXTURE_3D:
+         if (!enable_texture(ctx, state, TEXTURE_3D_BIT)) {
+            return;
+         }
+         break;
+      case GL_TEXTURE_GEN_Q:
+         {
+            struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
+            if (texUnit) {
+               GLuint newenabled = texUnit->TexGenEnabled & ~Q_BIT;
+               if (state)
+                  newenabled |= Q_BIT;
+               if (texUnit->TexGenEnabled == newenabled)
+                  return;
+               FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+               texUnit->TexGenEnabled = newenabled;
+            }
+         }
+         break;
+      case GL_TEXTURE_GEN_R:
+         {
+            struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
+            if (texUnit) {
+               GLuint newenabled = texUnit->TexGenEnabled & ~R_BIT;
+               if (state)
+                  newenabled |= R_BIT;
+               if (texUnit->TexGenEnabled == newenabled)
+                  return;
+               FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+               texUnit->TexGenEnabled = newenabled;
+            }
+         }
+         break;
+      case GL_TEXTURE_GEN_S:
+         {
+            struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
+            if (texUnit) {
+               GLuint newenabled = texUnit->TexGenEnabled & ~S_BIT;
+               if (state)
+                  newenabled |= S_BIT;
+               if (texUnit->TexGenEnabled == newenabled)
+                  return;
+               FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+               texUnit->TexGenEnabled = newenabled;
+            }
+         }
+         break;
+      case GL_TEXTURE_GEN_T:
+         {
+            struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
+            if (texUnit) {
+               GLuint newenabled = texUnit->TexGenEnabled & ~T_BIT;
+               if (state)
+                  newenabled |= T_BIT;
+               if (texUnit->TexGenEnabled == newenabled)
+                  return;
+               FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+               texUnit->TexGenEnabled = newenabled;
+            }
+         }
+         break;
+
+#if FEATURE_ES1
+      case GL_TEXTURE_GEN_STR_OES:
+	 /* disable S, T, and R at the same time */
+	 {
+            struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
+            if (texUnit) {
+               GLuint newenabled =
+		  texUnit->TexGenEnabled & ~STR_BITS;
+               if (state)
+                  newenabled |= STR_BITS;
+               if (texUnit->TexGenEnabled == newenabled)
+                  return;
+               FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+               texUnit->TexGenEnabled = newenabled;
+            }
+         }
+         break;
+#endif
+
+      /*
+       * CLIENT STATE!!!
+       */
+      case GL_VERTEX_ARRAY:
+      case GL_NORMAL_ARRAY:
+      case GL_COLOR_ARRAY:
+      case GL_INDEX_ARRAY:
+      case GL_TEXTURE_COORD_ARRAY:
+      case GL_EDGE_FLAG_ARRAY:
+      case GL_FOG_COORDINATE_ARRAY_EXT:
+      case GL_SECONDARY_COLOR_ARRAY_EXT:
+      case GL_POINT_SIZE_ARRAY_OES:
+         client_state( ctx, cap, state );
+         return;
+
+      /* GL_ARB_texture_cube_map */
+      case GL_TEXTURE_CUBE_MAP_ARB:
+         CHECK_EXTENSION(ARB_texture_cube_map, cap);
+         if (!enable_texture(ctx, state, TEXTURE_CUBE_BIT)) {
+            return;
+         }
+         break;
+
+      /* GL_EXT_secondary_color */
+      case GL_COLOR_SUM_EXT:
+         CHECK_EXTENSION2(EXT_secondary_color, ARB_vertex_program, cap);
+         if (ctx->Fog.ColorSumEnabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_FOG);
+         ctx->Fog.ColorSumEnabled = state;
+         break;
+
+      /* GL_ARB_multisample */
+      case GL_MULTISAMPLE_ARB:
+         if (ctx->Multisample.Enabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
+         ctx->Multisample.Enabled = state;
+         break;
+      case GL_SAMPLE_ALPHA_TO_COVERAGE_ARB:
+         if (ctx->Multisample.SampleAlphaToCoverage == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
+         ctx->Multisample.SampleAlphaToCoverage = state;
+         break;
+      case GL_SAMPLE_ALPHA_TO_ONE_ARB:
+         if (ctx->Multisample.SampleAlphaToOne == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
+         ctx->Multisample.SampleAlphaToOne = state;
+         break;
+      case GL_SAMPLE_COVERAGE_ARB:
+         if (ctx->Multisample.SampleCoverage == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
+         ctx->Multisample.SampleCoverage = state;
+         break;
+      case GL_SAMPLE_COVERAGE_INVERT_ARB:
+         if (ctx->Multisample.SampleCoverageInvert == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
+         ctx->Multisample.SampleCoverageInvert = state;
+         break;
+
+      /* GL_IBM_rasterpos_clip */
+      case GL_RASTER_POSITION_UNCLIPPED_IBM:
+         CHECK_EXTENSION(IBM_rasterpos_clip, cap);
+         if (ctx->Transform.RasterPositionUnclipped == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
+         ctx->Transform.RasterPositionUnclipped = state;
+         break;
+
+      /* GL_NV_point_sprite */
+      case GL_POINT_SPRITE_NV:
+         CHECK_EXTENSION2(NV_point_sprite, ARB_point_sprite, cap);
+         if (ctx->Point.PointSprite == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_POINT);
+         ctx->Point.PointSprite = state;
+         break;
+
+#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
+      case GL_VERTEX_PROGRAM_ARB:
+         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program, cap);
+         if (ctx->VertexProgram.Enabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_PROGRAM); 
+         ctx->VertexProgram.Enabled = state;
+         break;
+      case GL_VERTEX_PROGRAM_POINT_SIZE_ARB:
+         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program, cap);
+         if (ctx->VertexProgram.PointSizeEnabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_PROGRAM);
+         ctx->VertexProgram.PointSizeEnabled = state;
+         break;
+      case GL_VERTEX_PROGRAM_TWO_SIDE_ARB:
+         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program, cap);
+         if (ctx->VertexProgram.TwoSideEnabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_PROGRAM); 
+         ctx->VertexProgram.TwoSideEnabled = state;
+         break;
+#endif
+#if FEATURE_NV_vertex_program
+      case GL_MAP1_VERTEX_ATTRIB0_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB1_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB2_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB3_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB4_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB5_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB6_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB7_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB8_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB9_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB10_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB11_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB12_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB13_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB14_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB15_4_NV:
+         CHECK_EXTENSION(NV_vertex_program, cap);
+         {
+            const GLuint map = (GLuint) (cap - GL_MAP1_VERTEX_ATTRIB0_4_NV);
+            FLUSH_VERTICES(ctx, _NEW_EVAL);
+            ctx->Eval.Map1Attrib[map] = state;
+         }
+         break;
+      case GL_MAP2_VERTEX_ATTRIB0_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB1_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB2_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB3_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB4_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB5_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB6_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB7_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB8_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB9_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB10_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB11_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB12_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB13_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB14_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB15_4_NV:
+         CHECK_EXTENSION(NV_vertex_program, cap);
+         {
+            const GLuint map = (GLuint) (cap - GL_MAP2_VERTEX_ATTRIB0_4_NV);
+            FLUSH_VERTICES(ctx, _NEW_EVAL);
+            ctx->Eval.Map2Attrib[map] = state;
+         }
+         break;
+#endif /* FEATURE_NV_vertex_program */
+
+#if FEATURE_NV_fragment_program
+      case GL_FRAGMENT_PROGRAM_NV:
+         CHECK_EXTENSION(NV_fragment_program, cap);
+         if (ctx->FragmentProgram.Enabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_PROGRAM);
+         ctx->FragmentProgram.Enabled = state;
+         break;
+#endif /* FEATURE_NV_fragment_program */
+
+      /* GL_NV_texture_rectangle */
+      case GL_TEXTURE_RECTANGLE_NV:
+         CHECK_EXTENSION(NV_texture_rectangle, cap);
+         if (!enable_texture(ctx, state, TEXTURE_RECT_BIT)) {
+            return;
+         }
+         break;
+
+      /* GL_EXT_stencil_two_side */
+      case GL_STENCIL_TEST_TWO_SIDE_EXT:
+         CHECK_EXTENSION(EXT_stencil_two_side, cap);
+         if (ctx->Stencil.TestTwoSide == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_STENCIL);
+         ctx->Stencil.TestTwoSide = state;
+         if (state) {
+            ctx->Stencil._BackFace = 2;
+            ctx->_TriangleCaps |= DD_TRI_TWOSTENCIL;
+         } else {
+            ctx->Stencil._BackFace = 1;
+            ctx->_TriangleCaps &= ~DD_TRI_TWOSTENCIL;
+         }
+         break;
+
+#if FEATURE_ARB_fragment_program
+      case GL_FRAGMENT_PROGRAM_ARB:
+         CHECK_EXTENSION(ARB_fragment_program, cap);
+         if (ctx->FragmentProgram.Enabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_PROGRAM);
+         ctx->FragmentProgram.Enabled = state;
+         break;
+#endif /* FEATURE_ARB_fragment_program */
+
+      /* GL_EXT_depth_bounds_test */
+      case GL_DEPTH_BOUNDS_TEST_EXT:
+         CHECK_EXTENSION(EXT_depth_bounds_test, cap);
+         if (ctx->Depth.BoundsTest == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_DEPTH);
+         ctx->Depth.BoundsTest = state;
+         break;
+
+      case GL_DEPTH_CLAMP:
+         if (ctx->Transform.DepthClamp == state)
+            return;
+	 CHECK_EXTENSION(ARB_depth_clamp, cap);
+         FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
+	 ctx->Transform.DepthClamp = state;
+	 break;
+
+#if FEATURE_ATI_fragment_shader
+      case GL_FRAGMENT_SHADER_ATI:
+        CHECK_EXTENSION(ATI_fragment_shader, cap);
+	if (ctx->ATIFragmentShader.Enabled == state)
+	  return;
+	FLUSH_VERTICES(ctx, _NEW_PROGRAM);
+	ctx->ATIFragmentShader.Enabled = state;
+        break;
+#endif
+
+      /* GL_MESA_texture_array */
+      case GL_TEXTURE_1D_ARRAY_EXT:
+         CHECK_EXTENSION(MESA_texture_array, cap);
+         if (!enable_texture(ctx, state, TEXTURE_1D_ARRAY_BIT)) {
+            return;
+         }
+         break;
+
+      case GL_TEXTURE_2D_ARRAY_EXT:
+         CHECK_EXTENSION(MESA_texture_array, cap);
+         if (!enable_texture(ctx, state, TEXTURE_2D_ARRAY_BIT)) {
+            return;
+         }
+         break;
+
+      case GL_TEXTURE_CUBE_MAP_SEAMLESS:
+	 CHECK_EXTENSION(ARB_seamless_cube_map, cap);
+	 ctx->Texture.CubeMapSeamless = state;
+	 break;
+
+#if FEATURE_EXT_transform_feedback
+      case GL_RASTERIZER_DISCARD:
+	 CHECK_EXTENSION(EXT_transform_feedback, cap);
+         if (ctx->TransformFeedback.RasterDiscard != state) {
+            ctx->TransformFeedback.RasterDiscard = state;
+            FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
+         }
+         break;
+#endif
+
+      /* GL 3.1 primitive restart.  Note: this enum is different from
+       * GL_PRIMITIVE_RESTART_NV (which is client state).
+       */
+      case GL_PRIMITIVE_RESTART:
+         if (ctx->VersionMajor * 10 + ctx->VersionMinor < 31) {
+            goto invalid_enum_error;
+         }
+         if (ctx->Array.PrimitiveRestart != state) {
+            FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
+            ctx->Array.PrimitiveRestart = state;
+         }
+         break;
+
+      /* GL3.0 - GL_framebuffer_sRGB */
+      case GL_FRAMEBUFFER_SRGB_EXT:
+         CHECK_EXTENSION(EXT_framebuffer_sRGB, cap);
+         FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+         ctx->Color.sRGBEnabled = state;
+         break;
+
+      default:
+         goto invalid_enum_error;
+   }
+
+   if (ctx->Driver.Enable) {
+      ctx->Driver.Enable( ctx, cap, state );
+   }
+
+   return;
+
+invalid_enum_error:
+   _mesa_error(ctx, GL_INVALID_ENUM, "gl%s(0x%x)",
+               state ? "Enable" : "Disable", cap);
+}
+
+
+/**
+ * Enable GL capability.  Called by glEnable()
+ * \param cap  state to enable.
+ */
+void GLAPIENTRY
+_mesa_Enable( GLenum cap )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   _mesa_set_enable( ctx, cap, GL_TRUE );
+}
+
+
+/**
+ * Disable GL capability.  Called by glDisable()
+ * \param cap  state to disable.
+ */
+void GLAPIENTRY
+_mesa_Disable( GLenum cap )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   _mesa_set_enable( ctx, cap, GL_FALSE );
+}
+
+
+
+/**
+ * Enable/disable an indexed state var.
+ */
+void
+_mesa_set_enablei(struct gl_context *ctx, GLenum cap, GLuint index, GLboolean state)
+{
+   ASSERT(state == 0 || state == 1);
+   switch (cap) {
+   case GL_BLEND:
+      if (!ctx->Extensions.EXT_draw_buffers2) {
+         goto invalid_enum_error;
+      }
+      if (index >= ctx->Const.MaxDrawBuffers) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "%s(index=%u)",
+                     state ? "glEnableIndexed" : "glDisableIndexed", index);
+         return;
+      }
+      if (((ctx->Color.BlendEnabled >> index) & 1) != state) {
+         FLUSH_VERTICES(ctx, _NEW_COLOR);
+         if (state)
+            ctx->Color.BlendEnabled |= (1 << index);
+         else
+            ctx->Color.BlendEnabled &= ~(1 << index);
+      }
+      break;
+   default:
+      goto invalid_enum_error;
+   }
+   return;
+
+invalid_enum_error:
+    _mesa_error(ctx, GL_INVALID_ENUM, "%s(cap=%s)",
+                state ? "glEnablei" : "glDisablei",
+                _mesa_lookup_enum_by_nr(cap));
+}
+
+
+void GLAPIENTRY
+_mesa_DisableIndexed( GLenum cap, GLuint index )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   _mesa_set_enablei(ctx, cap, index, GL_FALSE);
+}
+
+
+void GLAPIENTRY
+_mesa_EnableIndexed( GLenum cap, GLuint index )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   _mesa_set_enablei(ctx, cap, index, GL_TRUE);
+}
+
+
+GLboolean GLAPIENTRY
+_mesa_IsEnabledIndexed( GLenum cap, GLuint index )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   switch (cap) {
+   case GL_BLEND:
+      if (index >= ctx->Const.MaxDrawBuffers) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glIsEnabledIndexed(index=%u)",
+                     index);
+         return GL_FALSE;
+      }
+      return (ctx->Color.BlendEnabled >> index) & 1;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glIsEnabledIndexed(cap=%s)",
+                  _mesa_lookup_enum_by_nr(cap));
+      return GL_FALSE;
+   }
+}
+
+
+
+
+#undef CHECK_EXTENSION
+#define CHECK_EXTENSION(EXTNAME)			\
+   if (!ctx->Extensions.EXTNAME) {			\
+      goto invalid_enum_error;				\
+   }
+
+#undef CHECK_EXTENSION2
+#define CHECK_EXTENSION2(EXT1, EXT2)				\
+   if (!ctx->Extensions.EXT1 && !ctx->Extensions.EXT2) {	\
+      goto invalid_enum_error;					\
+   }
+
+
+/**
+ * Helper function to determine whether a texture target is enabled.
+ */
+static GLboolean
+is_texture_enabled(struct gl_context *ctx, GLbitfield bit)
+{
+   const struct gl_texture_unit *const texUnit =
+       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   return (texUnit->Enabled & bit) ? GL_TRUE : GL_FALSE;
+}
+
+
+/**
+ * Return simple enable/disable state.
+ *
+ * \param cap  state variable to query.
+ *
+ * Returns the state of the specified capability from the current GL context.
+ * For the capabilities associated with extensions verifies that those
+ * extensions are effectively present before reporting.
+ */
+GLboolean GLAPIENTRY
+_mesa_IsEnabled( GLenum cap )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   switch (cap) {
+      case GL_ALPHA_TEST:
+         return ctx->Color.AlphaEnabled;
+      case GL_AUTO_NORMAL:
+	 return ctx->Eval.AutoNormal;
+      case GL_BLEND:
+         return ctx->Color.BlendEnabled & 1;  /* return state for buffer[0] */
+      case GL_CLIP_PLANE0:
+      case GL_CLIP_PLANE1:
+      case GL_CLIP_PLANE2:
+      case GL_CLIP_PLANE3:
+      case GL_CLIP_PLANE4:
+      case GL_CLIP_PLANE5:
+	 return (ctx->Transform.ClipPlanesEnabled >> (cap - GL_CLIP_PLANE0)) & 1;
+      case GL_COLOR_MATERIAL:
+	 return ctx->Light.ColorMaterialEnabled;
+      case GL_CULL_FACE:
+         return ctx->Polygon.CullFlag;
+      case GL_DEPTH_TEST:
+         return ctx->Depth.Test;
+      case GL_DITHER:
+	 return ctx->Color.DitherFlag;
+      case GL_FOG:
+	 return ctx->Fog.Enabled;
+      case GL_LIGHTING:
+         return ctx->Light.Enabled;
+      case GL_LIGHT0:
+      case GL_LIGHT1:
+      case GL_LIGHT2:
+      case GL_LIGHT3:
+      case GL_LIGHT4:
+      case GL_LIGHT5:
+      case GL_LIGHT6:
+      case GL_LIGHT7:
+         return ctx->Light.Light[cap-GL_LIGHT0].Enabled;
+      case GL_LINE_SMOOTH:
+	 return ctx->Line.SmoothFlag;
+      case GL_LINE_STIPPLE:
+	 return ctx->Line.StippleFlag;
+      case GL_INDEX_LOGIC_OP:
+	 return ctx->Color.IndexLogicOpEnabled;
+      case GL_COLOR_LOGIC_OP:
+	 return ctx->Color.ColorLogicOpEnabled;
+      case GL_MAP1_COLOR_4:
+	 return ctx->Eval.Map1Color4;
+      case GL_MAP1_INDEX:
+	 return ctx->Eval.Map1Index;
+      case GL_MAP1_NORMAL:
+	 return ctx->Eval.Map1Normal;
+      case GL_MAP1_TEXTURE_COORD_1:
+	 return ctx->Eval.Map1TextureCoord1;
+      case GL_MAP1_TEXTURE_COORD_2:
+	 return ctx->Eval.Map1TextureCoord2;
+      case GL_MAP1_TEXTURE_COORD_3:
+	 return ctx->Eval.Map1TextureCoord3;
+      case GL_MAP1_TEXTURE_COORD_4:
+	 return ctx->Eval.Map1TextureCoord4;
+      case GL_MAP1_VERTEX_3:
+	 return ctx->Eval.Map1Vertex3;
+      case GL_MAP1_VERTEX_4:
+	 return ctx->Eval.Map1Vertex4;
+      case GL_MAP2_COLOR_4:
+	 return ctx->Eval.Map2Color4;
+      case GL_MAP2_INDEX:
+	 return ctx->Eval.Map2Index;
+      case GL_MAP2_NORMAL:
+	 return ctx->Eval.Map2Normal;
+      case GL_MAP2_TEXTURE_COORD_1:
+	 return ctx->Eval.Map2TextureCoord1;
+      case GL_MAP2_TEXTURE_COORD_2:
+	 return ctx->Eval.Map2TextureCoord2;
+      case GL_MAP2_TEXTURE_COORD_3:
+	 return ctx->Eval.Map2TextureCoord3;
+      case GL_MAP2_TEXTURE_COORD_4:
+	 return ctx->Eval.Map2TextureCoord4;
+      case GL_MAP2_VERTEX_3:
+	 return ctx->Eval.Map2Vertex3;
+      case GL_MAP2_VERTEX_4:
+	 return ctx->Eval.Map2Vertex4;
+      case GL_NORMALIZE:
+	 return ctx->Transform.Normalize;
+      case GL_POINT_SMOOTH:
+	 return ctx->Point.SmoothFlag;
+      case GL_POLYGON_SMOOTH:
+	 return ctx->Polygon.SmoothFlag;
+      case GL_POLYGON_STIPPLE:
+	 return ctx->Polygon.StippleFlag;
+      case GL_POLYGON_OFFSET_POINT:
+	 return ctx->Polygon.OffsetPoint;
+      case GL_POLYGON_OFFSET_LINE:
+	 return ctx->Polygon.OffsetLine;
+      case GL_POLYGON_OFFSET_FILL:
+      /*case GL_POLYGON_OFFSET_EXT:*/
+	 return ctx->Polygon.OffsetFill;
+      case GL_RESCALE_NORMAL_EXT:
+         return ctx->Transform.RescaleNormals;
+      case GL_SCISSOR_TEST:
+	 return ctx->Scissor.Enabled;
+      case GL_SHARED_TEXTURE_PALETTE_EXT:
+         return ctx->Texture.SharedPalette;
+      case GL_STENCIL_TEST:
+	 return ctx->Stencil.Enabled;
+      case GL_TEXTURE_1D:
+         return is_texture_enabled(ctx, TEXTURE_1D_BIT);
+      case GL_TEXTURE_2D:
+         return is_texture_enabled(ctx, TEXTURE_2D_BIT);
+      case GL_TEXTURE_3D:
+         return is_texture_enabled(ctx, TEXTURE_3D_BIT);
+      case GL_TEXTURE_GEN_Q:
+         {
+            const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
+            if (texUnit) {
+               return (texUnit->TexGenEnabled & Q_BIT) ? GL_TRUE : GL_FALSE;
+            }
+         }
+         return GL_FALSE;
+      case GL_TEXTURE_GEN_R:
+         {
+            const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
+            if (texUnit) {
+               return (texUnit->TexGenEnabled & R_BIT) ? GL_TRUE : GL_FALSE;
+            }
+         }
+         return GL_FALSE;
+      case GL_TEXTURE_GEN_S:
+         {
+            const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
+            if (texUnit) {
+               return (texUnit->TexGenEnabled & S_BIT) ? GL_TRUE : GL_FALSE;
+            }
+         }
+         return GL_FALSE;
+      case GL_TEXTURE_GEN_T:
+         {
+            const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
+            if (texUnit) {
+               return (texUnit->TexGenEnabled & T_BIT) ? GL_TRUE : GL_FALSE;
+            }
+         }
+         return GL_FALSE;
+#if FEATURE_ES1
+      case GL_TEXTURE_GEN_STR_OES:
+	 {
+            const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
+            if (texUnit) {
+		    return (texUnit->TexGenEnabled & STR_BITS) == STR_BITS ? GL_TRUE : GL_FALSE;
+            }
+         }
+#endif
+
+      /*
+       * CLIENT STATE!!!
+       */
+      case GL_VERTEX_ARRAY:
+         return (ctx->Array.ArrayObj->Vertex.Enabled != 0);
+      case GL_NORMAL_ARRAY:
+         return (ctx->Array.ArrayObj->Normal.Enabled != 0);
+      case GL_COLOR_ARRAY:
+         return (ctx->Array.ArrayObj->Color.Enabled != 0);
+      case GL_INDEX_ARRAY:
+         return (ctx->Array.ArrayObj->Index.Enabled != 0);
+      case GL_TEXTURE_COORD_ARRAY:
+         return (ctx->Array.ArrayObj->TexCoord[ctx->Array.ActiveTexture].Enabled != 0);
+      case GL_EDGE_FLAG_ARRAY:
+         return (ctx->Array.ArrayObj->EdgeFlag.Enabled != 0);
+      case GL_FOG_COORDINATE_ARRAY_EXT:
+         CHECK_EXTENSION(EXT_fog_coord);
+         return (ctx->Array.ArrayObj->FogCoord.Enabled != 0);
+      case GL_SECONDARY_COLOR_ARRAY_EXT:
+         CHECK_EXTENSION(EXT_secondary_color);
+         return (ctx->Array.ArrayObj->SecondaryColor.Enabled != 0);
+#if FEATURE_point_size_array
+      case GL_POINT_SIZE_ARRAY_OES:
+         return (ctx->Array.ArrayObj->PointSize.Enabled != 0);
+#endif
+
+      /* GL_ARB_texture_cube_map */
+      case GL_TEXTURE_CUBE_MAP_ARB:
+         CHECK_EXTENSION(ARB_texture_cube_map);
+         return is_texture_enabled(ctx, TEXTURE_CUBE_BIT);
+
+      /* GL_EXT_secondary_color */
+      case GL_COLOR_SUM_EXT:
+         CHECK_EXTENSION2(EXT_secondary_color, ARB_vertex_program);
+         return ctx->Fog.ColorSumEnabled;
+
+      /* GL_ARB_multisample */
+      case GL_MULTISAMPLE_ARB:
+         return ctx->Multisample.Enabled;
+      case GL_SAMPLE_ALPHA_TO_COVERAGE_ARB:
+         return ctx->Multisample.SampleAlphaToCoverage;
+      case GL_SAMPLE_ALPHA_TO_ONE_ARB:
+         return ctx->Multisample.SampleAlphaToOne;
+      case GL_SAMPLE_COVERAGE_ARB:
+         return ctx->Multisample.SampleCoverage;
+      case GL_SAMPLE_COVERAGE_INVERT_ARB:
+         return ctx->Multisample.SampleCoverageInvert;
+
+      /* GL_IBM_rasterpos_clip */
+      case GL_RASTER_POSITION_UNCLIPPED_IBM:
+         CHECK_EXTENSION(IBM_rasterpos_clip);
+         return ctx->Transform.RasterPositionUnclipped;
+
+      /* GL_NV_point_sprite */
+      case GL_POINT_SPRITE_NV:
+         CHECK_EXTENSION2(NV_point_sprite, ARB_point_sprite)
+         return ctx->Point.PointSprite;
+
+#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
+      case GL_VERTEX_PROGRAM_ARB:
+         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program);
+         return ctx->VertexProgram.Enabled;
+      case GL_VERTEX_PROGRAM_POINT_SIZE_ARB:
+         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program);
+         return ctx->VertexProgram.PointSizeEnabled;
+      case GL_VERTEX_PROGRAM_TWO_SIDE_ARB:
+         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program);
+         return ctx->VertexProgram.TwoSideEnabled;
+#endif
+#if FEATURE_NV_vertex_program
+      case GL_VERTEX_ATTRIB_ARRAY0_NV:
+      case GL_VERTEX_ATTRIB_ARRAY1_NV:
+      case GL_VERTEX_ATTRIB_ARRAY2_NV:
+      case GL_VERTEX_ATTRIB_ARRAY3_NV:
+      case GL_VERTEX_ATTRIB_ARRAY4_NV:
+      case GL_VERTEX_ATTRIB_ARRAY5_NV:
+      case GL_VERTEX_ATTRIB_ARRAY6_NV:
+      case GL_VERTEX_ATTRIB_ARRAY7_NV:
+      case GL_VERTEX_ATTRIB_ARRAY8_NV:
+      case GL_VERTEX_ATTRIB_ARRAY9_NV:
+      case GL_VERTEX_ATTRIB_ARRAY10_NV:
+      case GL_VERTEX_ATTRIB_ARRAY11_NV:
+      case GL_VERTEX_ATTRIB_ARRAY12_NV:
+      case GL_VERTEX_ATTRIB_ARRAY13_NV:
+      case GL_VERTEX_ATTRIB_ARRAY14_NV:
+      case GL_VERTEX_ATTRIB_ARRAY15_NV:
+         CHECK_EXTENSION(NV_vertex_program);
+         {
+            GLint n = (GLint) cap - GL_VERTEX_ATTRIB_ARRAY0_NV;
+            ASSERT(n < Elements(ctx->Array.ArrayObj->VertexAttrib));
+            return (ctx->Array.ArrayObj->VertexAttrib[n].Enabled != 0);
+         }
+      case GL_MAP1_VERTEX_ATTRIB0_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB1_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB2_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB3_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB4_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB5_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB6_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB7_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB8_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB9_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB10_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB11_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB12_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB13_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB14_4_NV:
+      case GL_MAP1_VERTEX_ATTRIB15_4_NV:
+         CHECK_EXTENSION(NV_vertex_program);
+         {
+            const GLuint map = (GLuint) (cap - GL_MAP1_VERTEX_ATTRIB0_4_NV);
+            return ctx->Eval.Map1Attrib[map];
+         }
+      case GL_MAP2_VERTEX_ATTRIB0_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB1_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB2_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB3_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB4_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB5_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB6_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB7_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB8_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB9_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB10_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB11_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB12_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB13_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB14_4_NV:
+      case GL_MAP2_VERTEX_ATTRIB15_4_NV:
+         CHECK_EXTENSION(NV_vertex_program);
+         {
+            const GLuint map = (GLuint) (cap - GL_MAP2_VERTEX_ATTRIB0_4_NV);
+            return ctx->Eval.Map2Attrib[map];
+         }
+#endif /* FEATURE_NV_vertex_program */
+
+#if FEATURE_NV_fragment_program
+      case GL_FRAGMENT_PROGRAM_NV:
+         CHECK_EXTENSION(NV_fragment_program);
+         return ctx->FragmentProgram.Enabled;
+#endif /* FEATURE_NV_fragment_program */
+
+      /* GL_NV_texture_rectangle */
+      case GL_TEXTURE_RECTANGLE_NV:
+         CHECK_EXTENSION(NV_texture_rectangle);
+         return is_texture_enabled(ctx, TEXTURE_RECT_BIT);
+
+      /* GL_EXT_stencil_two_side */
+      case GL_STENCIL_TEST_TWO_SIDE_EXT:
+         CHECK_EXTENSION(EXT_stencil_two_side);
+         return ctx->Stencil.TestTwoSide;
+
+#if FEATURE_ARB_fragment_program
+      case GL_FRAGMENT_PROGRAM_ARB:
+         return ctx->FragmentProgram.Enabled;
+#endif /* FEATURE_ARB_fragment_program */
+
+      /* GL_EXT_depth_bounds_test */
+      case GL_DEPTH_BOUNDS_TEST_EXT:
+         CHECK_EXTENSION(EXT_depth_bounds_test);
+         return ctx->Depth.BoundsTest;
+
+      /* GL_ARB_depth_clamp */
+      case GL_DEPTH_CLAMP:
+         CHECK_EXTENSION(ARB_depth_clamp);
+         return ctx->Transform.DepthClamp;
+
+#if FEATURE_ATI_fragment_shader
+      case GL_FRAGMENT_SHADER_ATI:
+	 CHECK_EXTENSION(ATI_fragment_shader);
+	 return ctx->ATIFragmentShader.Enabled;
+#endif /* FEATURE_ATI_fragment_shader */
+
+      case GL_TEXTURE_CUBE_MAP_SEAMLESS:
+	 CHECK_EXTENSION(ARB_seamless_cube_map);
+	 return ctx->Texture.CubeMapSeamless;
+
+#if FEATURE_EXT_transform_feedback
+      case GL_RASTERIZER_DISCARD:
+	 CHECK_EXTENSION(EXT_transform_feedback);
+         return ctx->TransformFeedback.RasterDiscard;
+#endif
+
+      /* GL_NV_primitive_restart */
+      case GL_PRIMITIVE_RESTART_NV:
+	 if (!ctx->Extensions.NV_primitive_restart) {
+            goto invalid_enum_error;
+         }
+         return ctx->Array.PrimitiveRestart;
+
+      /* GL 3.1 primitive restart */
+      case GL_PRIMITIVE_RESTART:
+         if (ctx->VersionMajor * 10 + ctx->VersionMinor < 31) {
+            goto invalid_enum_error;
+         }
+         return ctx->Array.PrimitiveRestart;
+
+      /* GL3.0 - GL_framebuffer_sRGB */
+      case GL_FRAMEBUFFER_SRGB_EXT:
+	 CHECK_EXTENSION(EXT_framebuffer_sRGB);
+	 return ctx->Color.sRGBEnabled;
+
+      default:
+         goto invalid_enum_error;
+   }
+
+   return GL_FALSE;
+
+invalid_enum_error:
+   _mesa_error(ctx, GL_INVALID_ENUM, "glIsEnabled(0x%x)", (int) cap);
+   return GL_FALSE;
+}
diff --git a/mesalib/src/mesa/main/extensions.c b/mesalib/src/mesa/main/extensions.c
index 310740b0d..3840cdc5d 100644
--- a/mesalib/src/mesa/main/extensions.c
+++ b/mesalib/src/mesa/main/extensions.c
@@ -241,8 +241,7 @@ static const struct extension extension_table[] = {
    { "GL_OES_stencil4",                            o(dummy_false),                     DISABLE                },
    { "GL_OES_stencil8",                            o(EXT_framebuffer_object),                       ES1 | ES2 },
    { "GL_OES_stencil_wrap",                        o(EXT_stencil_wrap),                             ES1       },
-   /* GL_OES_texture_3D is disabled due to missing GLSL support. */
-   { "GL_OES_texture_3D",                          o(EXT_texture3D),                   DISABLE                },
+   { "GL_OES_texture_3D",                          o(EXT_texture3D),                                      ES2 },
    { "GL_OES_texture_cube_map",                    o(ARB_texture_cube_map),                         ES1       },
    { "GL_OES_texture_env_crossbar",                o(ARB_texture_env_crossbar),                     ES1       },
    { "GL_OES_texture_mirrored_repeat",             o(ARB_texture_mirrored_repeat),                  ES1       },
@@ -291,7 +290,6 @@ static const struct extension extension_table[] = {
    { "GL_SGIS_texture_border_clamp",               o(ARB_texture_border_clamp),                GL             },
    { "GL_SGIS_texture_edge_clamp",                 o(SGIS_texture_edge_clamp),                 GL             },
    { "GL_SGIS_texture_lod",                        o(SGIS_texture_lod),                        GL             },
-   { "GL_SGI_texture_color_table",                 o(SGI_texture_color_table),                 GL             },
    { "GL_SUN_multi_draw_arrays",                   o(EXT_multi_draw_arrays),                   GL             },
 
    { 0, 0, 0 },
@@ -521,7 +519,6 @@ _mesa_enable_sw_extensions(struct gl_context *ctx)
 #if FEATURE_NV_fragment_program && FEATURE_ARB_fragment_program
    ctx->Extensions.NV_fragment_program_option = GL_TRUE;
 #endif
-   ctx->Extensions.SGI_texture_color_table = GL_TRUE;
    /*ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;*/
    ctx->Extensions.SGIS_texture_edge_clamp = GL_TRUE;
 #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
diff --git a/mesalib/src/mesa/main/fbobject.c b/mesalib/src/mesa/main/fbobject.c
index b2ff4dc29..c242e568d 100644
--- a/mesalib/src/mesa/main/fbobject.c
+++ b/mesalib/src/mesa/main/fbobject.c
@@ -1,2494 +1,2438 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.1

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (C) 1999-2009  VMware, Inc.  All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-/*

- * GL_EXT/ARB_framebuffer_object extensions

- *

- * Authors:

- *   Brian Paul

- */

-

-

-#include "buffers.h"

-#include "context.h"

-#include "enums.h"

-#include "fbobject.h"

-#include "formats.h"

-#include "framebuffer.h"

-#include "hash.h"

-#include "macros.h"

-#include "mfeatures.h"

-#include "mtypes.h"

-#include "renderbuffer.h"

-#include "state.h"

-#include "teximage.h"

-#include "texobj.h"

-

-

-/** Set this to 1 to help debug FBO incompleteness problems */

-#define DEBUG_FBO 0

-

-/** Set this to 1 to debug/log glBlitFramebuffer() calls */

-#define DEBUG_BLIT 0

-

-

-/**

- * Notes:

- *

- * None of the GL_EXT_framebuffer_object functions are compiled into

- * display lists.

- */

-

-

-

-/*

- * When glGenRender/FramebuffersEXT() is called we insert pointers to

- * these placeholder objects into the hash table.

- * Later, when the object ID is first bound, we replace the placeholder

- * with the real frame/renderbuffer.

- */

-static struct gl_framebuffer DummyFramebuffer;

-static struct gl_renderbuffer DummyRenderbuffer;

-

-/* We bind this framebuffer when applications pass a NULL

- * drawable/surface in make current. */

-static struct gl_framebuffer IncompleteFramebuffer;

-

-

-#define IS_CUBE_FACE(TARGET) \

-   ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \

-    (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)

-

-

-static void

-delete_dummy_renderbuffer(struct gl_renderbuffer *rb)

-{

-   /* no op */

-}

-

-static void

-delete_dummy_framebuffer(struct gl_framebuffer *fb)

-{

-   /* no op */

-}

-

-

-void

-_mesa_init_fbobjects(struct gl_context *ctx)

-{

-   _glthread_INIT_MUTEX(DummyFramebuffer.Mutex);

-   _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);

-   _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);

-   DummyFramebuffer.Delete = delete_dummy_framebuffer;

-   DummyRenderbuffer.Delete = delete_dummy_renderbuffer;

-   IncompleteFramebuffer.Delete = delete_dummy_framebuffer;

-}

-

-struct gl_framebuffer *

-_mesa_get_incomplete_framebuffer(void)

-{

-   return &IncompleteFramebuffer;

-}

-

-/**

- * Helper routine for getting a gl_renderbuffer.

- */

-struct gl_renderbuffer *

-_mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)

-{

-   struct gl_renderbuffer *rb;

-

-   if (id == 0)

-      return NULL;

-

-   rb = (struct gl_renderbuffer *)

-      _mesa_HashLookup(ctx->Shared->RenderBuffers, id);

-   return rb;

-}

-

-

-/**

- * Helper routine for getting a gl_framebuffer.

- */

-struct gl_framebuffer *

-_mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)

-{

-   struct gl_framebuffer *fb;

-

-   if (id == 0)

-      return NULL;

-

-   fb = (struct gl_framebuffer *)

-      _mesa_HashLookup(ctx->Shared->FrameBuffers, id);

-   return fb;

-}

-

-

-/**

- * Mark the given framebuffer as invalid.  This will force the

- * test for framebuffer completeness to be done before the framebuffer

- * is used.

- */

-static void

-invalidate_framebuffer(struct gl_framebuffer *fb)

-{

-   fb->_Status = 0; /* "indeterminate" */

-}

-

-

-/**

- * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding

- * gl_renderbuffer_attachment object.

- * This function is only used for user-created FB objects, not the

- * default / window-system FB object.

- * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to

- * the depth buffer attachment point.

- */

-struct gl_renderbuffer_attachment *

-_mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,

-                     GLenum attachment)

-{

-   GLuint i;

-

-   assert(fb->Name > 0);

-

-   switch (attachment) {

-   case GL_COLOR_ATTACHMENT0_EXT:

-   case GL_COLOR_ATTACHMENT1_EXT:

-   case GL_COLOR_ATTACHMENT2_EXT:

-   case GL_COLOR_ATTACHMENT3_EXT:

-   case GL_COLOR_ATTACHMENT4_EXT:

-   case GL_COLOR_ATTACHMENT5_EXT:

-   case GL_COLOR_ATTACHMENT6_EXT:

-   case GL_COLOR_ATTACHMENT7_EXT:

-   case GL_COLOR_ATTACHMENT8_EXT:

-   case GL_COLOR_ATTACHMENT9_EXT:

-   case GL_COLOR_ATTACHMENT10_EXT:

-   case GL_COLOR_ATTACHMENT11_EXT:

-   case GL_COLOR_ATTACHMENT12_EXT:

-   case GL_COLOR_ATTACHMENT13_EXT:

-   case GL_COLOR_ATTACHMENT14_EXT:

-   case GL_COLOR_ATTACHMENT15_EXT:

-      i = attachment - GL_COLOR_ATTACHMENT0_EXT;

-      if (i >= ctx->Const.MaxColorAttachments) {

-	 return NULL;

-      }

-      return &fb->Attachment[BUFFER_COLOR0 + i];

-   case GL_DEPTH_STENCIL_ATTACHMENT:

-      /* fall-through */

-   case GL_DEPTH_BUFFER:

-      /* fall-through / new in GL 3.0 */

-   case GL_DEPTH_ATTACHMENT_EXT:

-      return &fb->Attachment[BUFFER_DEPTH];

-   case GL_STENCIL_BUFFER:

-      /* fall-through / new in GL 3.0 */

-   case GL_STENCIL_ATTACHMENT_EXT:

-      return &fb->Attachment[BUFFER_STENCIL];

-   default:

-      return NULL;

-   }

-}

-

-

-/**

- * As above, but only used for getting attachments of the default /

- * window-system framebuffer (not user-created framebuffer objects).

- */

-static struct gl_renderbuffer_attachment *

-_mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,

-                         GLenum attachment)

-{

-   assert(fb->Name == 0);

-

-   switch (attachment) {

-   case GL_FRONT_LEFT:

-      return &fb->Attachment[BUFFER_FRONT_LEFT];

-   case GL_FRONT_RIGHT:

-      return &fb->Attachment[BUFFER_FRONT_RIGHT];

-   case GL_BACK_LEFT:

-      return &fb->Attachment[BUFFER_BACK_LEFT];

-   case GL_BACK_RIGHT:

-      return &fb->Attachment[BUFFER_BACK_RIGHT];

-   case GL_AUX0:

-      if (fb->Visual.numAuxBuffers == 1) {

-         return &fb->Attachment[BUFFER_AUX0];

-      }

-      return NULL;

-   case GL_DEPTH_BUFFER:

-      /* fall-through / new in GL 3.0 */

-   case GL_DEPTH_ATTACHMENT_EXT:

-      return &fb->Attachment[BUFFER_DEPTH];

-   case GL_STENCIL_BUFFER:

-      /* fall-through / new in GL 3.0 */

-   case GL_STENCIL_ATTACHMENT_EXT:

-      return &fb->Attachment[BUFFER_STENCIL];

-   default:

-      return NULL;

-   }

-}

-

-

-

-/**

- * Remove any texture or renderbuffer attached to the given attachment

- * point.  Update reference counts, etc.

- */

-void

-_mesa_remove_attachment(struct gl_context *ctx,

-                        struct gl_renderbuffer_attachment *att)

-{

-   if (att->Type == GL_TEXTURE) {

-      ASSERT(att->Texture);

-      if (ctx->Driver.FinishRenderTexture) {

-         /* tell driver that we're done rendering to this texture. */

-         ctx->Driver.FinishRenderTexture(ctx, att);

-      }

-      _mesa_reference_texobj(&att->Texture, NULL); /* unbind */

-      ASSERT(!att->Texture);

-   }

-   if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {

-      ASSERT(!att->Texture);

-      _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */

-      ASSERT(!att->Renderbuffer);

-   }

-   att->Type = GL_NONE;

-   att->Complete = GL_TRUE;

-}

-

-

-/**

- * Bind a texture object to an attachment point.

- * The previous binding, if any, will be removed first.

- */

-void

-_mesa_set_texture_attachment(struct gl_context *ctx,

-                             struct gl_framebuffer *fb,

-                             struct gl_renderbuffer_attachment *att,

-                             struct gl_texture_object *texObj,

-                             GLenum texTarget, GLuint level, GLuint zoffset)

-{

-   if (att->Texture == texObj) {

-      /* re-attaching same texture */

-      ASSERT(att->Type == GL_TEXTURE);

-      if (ctx->Driver.FinishRenderTexture)

-	 ctx->Driver.FinishRenderTexture(ctx, att);

-   }

-   else {

-      /* new attachment */

-      if (ctx->Driver.FinishRenderTexture && att->Texture)

-	 ctx->Driver.FinishRenderTexture(ctx, att);

-      _mesa_remove_attachment(ctx, att);

-      att->Type = GL_TEXTURE;

-      assert(!att->Texture);

-      _mesa_reference_texobj(&att->Texture, texObj);

-   }

-

-   /* always update these fields */

-   att->TextureLevel = level;

-   att->CubeMapFace = _mesa_tex_target_to_face(texTarget);

-   att->Zoffset = zoffset;

-   att->Complete = GL_FALSE;

-

-   if (att->Texture->Image[att->CubeMapFace][att->TextureLevel]) {

-      ctx->Driver.RenderTexture(ctx, fb, att);

-   }

-

-   invalidate_framebuffer(fb);

-}

-

-

-/**

- * Bind a renderbuffer to an attachment point.

- * The previous binding, if any, will be removed first.

- */

-void

-_mesa_set_renderbuffer_attachment(struct gl_context *ctx,

-                                  struct gl_renderbuffer_attachment *att,

-                                  struct gl_renderbuffer *rb)

-{

-   /* XXX check if re-doing same attachment, exit early */

-   _mesa_remove_attachment(ctx, att);

-   att->Type = GL_RENDERBUFFER_EXT;

-   att->Texture = NULL; /* just to be safe */

-   att->Complete = GL_FALSE;

-   _mesa_reference_renderbuffer(&att->Renderbuffer, rb);

-}

-

-

-/**

- * Fallback for ctx->Driver.FramebufferRenderbuffer()

- * Attach a renderbuffer object to a framebuffer object.

- */

-void

-_mesa_framebuffer_renderbuffer(struct gl_context *ctx,

-                               struct gl_framebuffer *fb,

-                               GLenum attachment, struct gl_renderbuffer *rb)

-{

-   struct gl_renderbuffer_attachment *att;

-

-   _glthread_LOCK_MUTEX(fb->Mutex);

-

-   att = _mesa_get_attachment(ctx, fb, attachment);

-   ASSERT(att);

-   if (rb) {

-      _mesa_set_renderbuffer_attachment(ctx, att, rb);

-      if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {

-         /* do stencil attachment here (depth already done above) */

-         att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);

-         assert(att);

-         _mesa_set_renderbuffer_attachment(ctx, att, rb);

-      }

-   }

-   else {

-      _mesa_remove_attachment(ctx, att);

-   }

-

-   invalidate_framebuffer(fb);

-

-   _glthread_UNLOCK_MUTEX(fb->Mutex);

-}

-

-

-/**

- * Fallback for ctx->Driver.ValidateFramebuffer()

- * Check if the renderbuffer's formats are supported by the software

- * renderer.

- * Drivers should probably override this.

- */

-void

-_mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)

-{

-   gl_buffer_index buf;

-   for (buf = 0; buf < BUFFER_COUNT; buf++) {

-      const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;

-      if (rb) {

-         switch (rb->_BaseFormat) {

-         case GL_ALPHA:

-         case GL_LUMINANCE_ALPHA:

-         case GL_LUMINANCE:

-         case GL_INTENSITY:

-         case GL_RED:

-         case GL_RG:

-            fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;

-            return;

-         default:

-            /* render buffer format is supported by software rendering */

-            ;

-         }

-      }

-   }

-}

-

-

-/**

- * For debug only.

- */

-static void

-att_incomplete(const char *msg)

-{

-#if DEBUG_FBO

-   _mesa_debug(NULL, "attachment incomplete: %s\n", msg);

-#else

-   (void) msg;

-#endif

-}

-

-

-/**

- * For debug only.

- */

-static void

-fbo_incomplete(const char *msg, int index)

-{

-#if DEBUG_FBO

-   _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);

-#else

-   (void) msg;

-   (void) index;

-#endif

-}

-

-

-/**

- * Is the given base format a legal format for a color renderbuffer?

- */

-GLboolean

-_mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)

-{

-   switch (baseFormat) {

-   case GL_RGB:

-   case GL_RGBA:

-      return GL_TRUE;

-   case GL_LUMINANCE:

-   case GL_LUMINANCE_ALPHA:

-   case GL_INTENSITY:

-   case GL_ALPHA:

-      return ctx->Extensions.ARB_framebuffer_object;

-   case GL_RED:

-   case GL_RG:

-      return ctx->Extensions.ARB_texture_rg;

-   default:

-      return GL_FALSE;

-   }

-}

-

-

-/**

- * Is the given base format a legal format for a depth/stencil renderbuffer?

- */

-static GLboolean

-is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)

-{

-   switch (baseFormat) {

-   case GL_DEPTH_COMPONENT:

-   case GL_DEPTH_STENCIL_EXT:

-      return GL_TRUE;

-   default:

-      return GL_FALSE;

-   }

-}

-

-

-/**

- * Test if an attachment point is complete and update its Complete field.

- * \param format if GL_COLOR, this is a color attachment point,

- *               if GL_DEPTH, this is a depth component attachment point,

- *               if GL_STENCIL, this is a stencil component attachment point.

- */

-static void

-test_attachment_completeness(const struct gl_context *ctx, GLenum format,

-                             struct gl_renderbuffer_attachment *att)

-{

-   assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);

-

-   /* assume complete */

-   att->Complete = GL_TRUE;

-

-   /* Look for reasons why the attachment might be incomplete */

-   if (att->Type == GL_TEXTURE) {

-      const struct gl_texture_object *texObj = att->Texture;

-      struct gl_texture_image *texImage;

-      GLenum baseFormat;

-

-      if (!texObj) {

-         att_incomplete("no texobj");

-         att->Complete = GL_FALSE;

-         return;

-      }

-

-      texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];

-      if (!texImage) {

-         att_incomplete("no teximage");

-         att->Complete = GL_FALSE;

-         return;

-      }

-      if (texImage->Width < 1 || texImage->Height < 1) {

-         att_incomplete("teximage width/height=0");

-         printf("texobj = %u\n", texObj->Name);

-         printf("level = %d\n", att->TextureLevel);

-         att->Complete = GL_FALSE;

-         return;

-      }

-      if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {

-         att_incomplete("bad z offset");

-         att->Complete = GL_FALSE;

-         return;

-      }

-

-      baseFormat = _mesa_get_format_base_format(texImage->TexFormat);

-

-      if (format == GL_COLOR) {

-         if (!_mesa_is_legal_color_format(ctx, baseFormat)) {

-            att_incomplete("bad format");

-            att->Complete = GL_FALSE;

-            return;

-         }

-         if (_mesa_is_format_compressed(texImage->TexFormat)) {

-            att_incomplete("compressed internalformat");

-            att->Complete = GL_FALSE;

-            return;

-         }

-      }

-      else if (format == GL_DEPTH) {

-         if (baseFormat == GL_DEPTH_COMPONENT) {

-            /* OK */

-         }

-         else if (ctx->Extensions.EXT_packed_depth_stencil &&

-                  ctx->Extensions.ARB_depth_texture &&

-                  baseFormat == GL_DEPTH_STENCIL_EXT) {

-            /* OK */

-         }

-         else {

-            att->Complete = GL_FALSE;

-            att_incomplete("bad depth format");

-            return;

-         }

-      }

-      else {

-         ASSERT(format == GL_STENCIL);

-         if (ctx->Extensions.EXT_packed_depth_stencil &&

-             ctx->Extensions.ARB_depth_texture &&

-             baseFormat == GL_DEPTH_STENCIL_EXT) {

-            /* OK */

-         }

-         else {

-            /* no such thing as stencil-only textures */

-            att_incomplete("illegal stencil texture");

-            att->Complete = GL_FALSE;

-            return;

-         }

-      }

-   }

-   else if (att->Type == GL_RENDERBUFFER_EXT) {

-      const GLenum baseFormat =

-         _mesa_get_format_base_format(att->Renderbuffer->Format);

-

-      ASSERT(att->Renderbuffer);

-      if (!att->Renderbuffer->InternalFormat ||

-          att->Renderbuffer->Width < 1 ||

-          att->Renderbuffer->Height < 1) {

-         att_incomplete("0x0 renderbuffer");

-         att->Complete = GL_FALSE;

-         return;

-      }

-      if (format == GL_COLOR) {

-         if (!_mesa_is_legal_color_format(ctx, baseFormat)) {

-            att_incomplete("bad renderbuffer color format");

-            att->Complete = GL_FALSE;

-            return;

-         }

-      }

-      else if (format == GL_DEPTH) {

-         if (baseFormat == GL_DEPTH_COMPONENT) {

-            /* OK */

-         }

-         else if (ctx->Extensions.EXT_packed_depth_stencil &&

-                  baseFormat == GL_DEPTH_STENCIL_EXT) {

-            /* OK */

-         }

-         else {

-            att_incomplete("bad renderbuffer depth format");

-            att->Complete = GL_FALSE;

-            return;

-         }

-      }

-      else {

-         assert(format == GL_STENCIL);

-         if (baseFormat == GL_STENCIL_INDEX) {

-            /* OK */

-         }

-         else if (ctx->Extensions.EXT_packed_depth_stencil &&

-                  baseFormat == GL_DEPTH_STENCIL_EXT) {

-            /* OK */

-         }

-         else {

-            att->Complete = GL_FALSE;

-            att_incomplete("bad renderbuffer stencil format");

-            return;

-         }

-      }

-   }

-   else {

-      ASSERT(att->Type == GL_NONE);

-      /* complete */

-      return;

-   }

-}

-

-

-/**

- * Test if the given framebuffer object is complete and update its

- * Status field with the results.

- * Calls the ctx->Driver.ValidateFramebuffer() function to allow the

- * driver to make hardware-specific validation/completeness checks.

- * Also update the framebuffer's Width and Height fields if the

- * framebuffer is complete.

- */

-void

-_mesa_test_framebuffer_completeness(struct gl_context *ctx,

-                                    struct gl_framebuffer *fb)

-{

-   GLuint numImages;

-   GLenum intFormat = GL_NONE; /* color buffers' internal format */

-   GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;

-   GLint numSamples = -1;

-   GLint i;

-   GLuint j;

-

-   assert(fb->Name != 0);

-

-   numImages = 0;

-   fb->Width = 0;

-   fb->Height = 0;

-

-   /* Start at -2 to more easily loop over all attachment points.

-    *  -2: depth buffer

-    *  -1: stencil buffer

-    * >=0: color buffer

-    */

-   for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {

-      struct gl_renderbuffer_attachment *att;

-      GLenum f;

-      gl_format mesaFormat;

-

-      /*

-       * XXX for ARB_fbo, only check color buffers that are named by

-       * GL_READ_BUFFER and GL_DRAW_BUFFERi.

-       */

-

-      /* check for attachment completeness

-       */

-      if (i == -2) {

-         att = &fb->Attachment[BUFFER_DEPTH];

-         test_attachment_completeness(ctx, GL_DEPTH, att);

-         if (!att->Complete) {

-            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;

-            fbo_incomplete("depth attachment incomplete", -1);

-            return;

-         }

-      }

-      else if (i == -1) {

-         att = &fb->Attachment[BUFFER_STENCIL];

-         test_attachment_completeness(ctx, GL_STENCIL, att);

-         if (!att->Complete) {

-            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;

-            fbo_incomplete("stencil attachment incomplete", -1);

-            return;

-         }

-      }

-      else {

-         att = &fb->Attachment[BUFFER_COLOR0 + i];

-         test_attachment_completeness(ctx, GL_COLOR, att);

-         if (!att->Complete) {

-            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;

-            fbo_incomplete("color attachment incomplete", i);

-            return;

-         }

-      }

-

-      /* get width, height, format of the renderbuffer/texture

-       */

-      if (att->Type == GL_TEXTURE) {

-         const struct gl_texture_image *texImg

-            = att->Texture->Image[att->CubeMapFace][att->TextureLevel];

-         minWidth = MIN2(minWidth, texImg->Width);

-         maxWidth = MAX2(maxWidth, texImg->Width);

-         minHeight = MIN2(minHeight, texImg->Height);

-         maxHeight = MAX2(maxHeight, texImg->Height);

-         f = texImg->_BaseFormat;

-         mesaFormat = texImg->TexFormat;

-         numImages++;

-         if (!_mesa_is_legal_color_format(ctx, f) &&

-             !is_legal_depth_format(ctx, f)) {

-            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;

-            fbo_incomplete("texture attachment incomplete", -1);

-            return;

-         }

-      }

-      else if (att->Type == GL_RENDERBUFFER_EXT) {

-         minWidth = MIN2(minWidth, att->Renderbuffer->Width);

-         maxWidth = MAX2(minWidth, att->Renderbuffer->Width);

-         minHeight = MIN2(minHeight, att->Renderbuffer->Height);

-         maxHeight = MAX2(minHeight, att->Renderbuffer->Height);

-         f = att->Renderbuffer->InternalFormat;

-         mesaFormat = att->Renderbuffer->Format;

-         numImages++;

-      }

-      else {

-         assert(att->Type == GL_NONE);

-         continue;

-      }

-

-      if (numSamples < 0) {

-         /* first buffer */

-         numSamples = att->Renderbuffer->NumSamples;

-      }

-

-      /* check if integer color */

-      fb->_IntegerColor = _mesa_is_format_integer_color(mesaFormat);

-

-      /* Error-check width, height, format, samples

-       */

-      if (numImages == 1) {

-         /* save format, num samples */

-         if (i >= 0) {

-            intFormat = f;

-         }

-      }

-      else {

-         if (!ctx->Extensions.ARB_framebuffer_object) {

-            /* check that width, height, format are same */

-            if (minWidth != maxWidth || minHeight != maxHeight) {

-               fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;

-               fbo_incomplete("width or height mismatch", -1);

-               return;

-            }

-            /* check that all color buffer have same format */

-            if (intFormat != GL_NONE && f != intFormat) {

-               fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;

-               fbo_incomplete("format mismatch", -1);

-               return;

-            }

-         }

-         if (att->Renderbuffer &&

-             att->Renderbuffer->NumSamples != numSamples) {

-            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;

-            fbo_incomplete("inconsistant number of samples", i);

-            return;

-         }            

-

-      }

-   }

-

-#if FEATURE_GL

-   if (ctx->API == API_OPENGL) {

-      /* Check that all DrawBuffers are present */

-      for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {

-	 if (fb->ColorDrawBuffer[j] != GL_NONE) {

-	    const struct gl_renderbuffer_attachment *att

-	       = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);

-	    assert(att);

-	    if (att->Type == GL_NONE) {

-	       fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;

-	       fbo_incomplete("missing drawbuffer", j);

-	       return;

-	    }

-	 }

-      }

-

-      /* Check that the ReadBuffer is present */

-      if (fb->ColorReadBuffer != GL_NONE) {

-	 const struct gl_renderbuffer_attachment *att

-	    = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);

-	 assert(att);

-	 if (att->Type == GL_NONE) {

-	    fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;

-            fbo_incomplete("missing readbuffer", -1);

-	    return;

-	 }

-      }

-   }

-#else

-   (void) j;

-#endif

-

-   if (numImages == 0) {

-      fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;

-      fbo_incomplete("no attachments", -1);

-      return;

-   }

-

-   /* Provisionally set status = COMPLETE ... */

-   fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;

-

-   /* ... but the driver may say the FB is incomplete.

-    * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED

-    * if anything.

-    */

-   if (ctx->Driver.ValidateFramebuffer) {

-      ctx->Driver.ValidateFramebuffer(ctx, fb);

-      if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-         fbo_incomplete("driver marked FBO as incomplete", -1);

-      }

-   }

-

-   if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {

-      /*

-       * Note that if ARB_framebuffer_object is supported and the attached

-       * renderbuffers/textures are different sizes, the framebuffer

-       * width/height will be set to the smallest width/height.

-       */

-      fb->Width = minWidth;

-      fb->Height = minHeight;

-

-      /* finally, update the visual info for the framebuffer */

-      _mesa_update_framebuffer_visual(ctx, fb);

-   }

-}

-

-

-GLboolean GLAPIENTRY

-_mesa_IsRenderbufferEXT(GLuint renderbuffer)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);

-   if (renderbuffer) {

-      struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);

-      if (rb != NULL && rb != &DummyRenderbuffer)

-         return GL_TRUE;

-   }

-   return GL_FALSE;

-}

-

-

-void GLAPIENTRY

-_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)

-{

-   struct gl_renderbuffer *newRb;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (target != GL_RENDERBUFFER_EXT) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");

-      return;

-   }

-

-   /* No need to flush here since the render buffer binding has no

-    * effect on rendering state.

-    */

-

-   if (renderbuffer) {

-      newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);

-      if (newRb == &DummyRenderbuffer) {

-         /* ID was reserved, but no real renderbuffer object made yet */

-         newRb = NULL;

-      }

-      else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {

-         /* All RB IDs must be Gen'd */

-         _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");

-         return;

-      }

-

-      if (!newRb) {

-	 /* create new renderbuffer object */

-	 newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);

-	 if (!newRb) {

-	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");

-	    return;

-	 }

-         ASSERT(newRb->AllocStorage);

-         _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);

-         newRb->RefCount = 1; /* referenced by hash table */

-      }

-   }

-   else {

-      newRb = NULL;

-   }

-

-   ASSERT(newRb != &DummyRenderbuffer);

-

-   _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);

-}

-

-

-/**

- * If the given renderbuffer is anywhere attached to the framebuffer, detach

- * the renderbuffer.

- * This is used when a renderbuffer object is deleted.

- * The spec calls for unbinding.

- */

-static void

-detach_renderbuffer(struct gl_context *ctx,

-                    struct gl_framebuffer *fb,

-                    struct gl_renderbuffer *rb)

-{

-   GLuint i;

-   for (i = 0; i < BUFFER_COUNT; i++) {

-      if (fb->Attachment[i].Renderbuffer == rb) {

-         _mesa_remove_attachment(ctx, &fb->Attachment[i]);

-      }

-   }

-   invalidate_framebuffer(fb);

-}

-

-

-void GLAPIENTRY

-_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)

-{

-   GLint i;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   for (i = 0; i < n; i++) {

-      if (renderbuffers[i] > 0) {

-	 struct gl_renderbuffer *rb;

-	 rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);

-	 if (rb) {

-            /* check if deleting currently bound renderbuffer object */

-            if (rb == ctx->CurrentRenderbuffer) {

-               /* bind default */

-               ASSERT(rb->RefCount >= 2);

-               _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);

-            }

-

-            if (ctx->DrawBuffer->Name) {

-               detach_renderbuffer(ctx, ctx->DrawBuffer, rb);

-            }

-            if (ctx->ReadBuffer->Name && ctx->ReadBuffer != ctx->DrawBuffer) {

-               detach_renderbuffer(ctx, ctx->ReadBuffer, rb);

-            }

-

-	    /* Remove from hash table immediately, to free the ID.

-             * But the object will not be freed until it's no longer

-             * referenced anywhere else.

-             */

-	    _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);

-

-            if (rb != &DummyRenderbuffer) {

-               /* no longer referenced by hash table */

-               _mesa_reference_renderbuffer(&rb, NULL);

-	    }

-	 }

-      }

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLuint first;

-   GLint i;

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (n < 0) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");

-      return;

-   }

-

-   if (!renderbuffers)

-      return;

-

-   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);

-

-   for (i = 0; i < n; i++) {

-      GLuint name = first + i;

-      renderbuffers[i] = name;

-      /* insert dummy placeholder into hash table */

-      _glthread_LOCK_MUTEX(ctx->Shared->Mutex);

-      _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);

-      _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);

-   }

-}

-

-

-/**

- * Given an internal format token for a render buffer, return the

- * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,

- * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,

- * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).

- *

- * This is similar to _mesa_base_tex_format() but the set of valid

- * internal formats is different.

- *

- * Note that even if a format is determined to be legal here, validation

- * of the FBO may fail if the format is not supported by the driver/GPU.

- *

- * \param internalFormat  as passed to glRenderbufferStorage()

- * \return the base internal format, or 0 if internalFormat is illegal

- */

-GLenum

-_mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)

-{

-   /*

-    * Notes: some formats such as alpha, luminance, etc. were added

-    * with GL_ARB_framebuffer_object.

-    */

-   switch (internalFormat) {

-   case GL_ALPHA:

-   case GL_ALPHA4:

-   case GL_ALPHA8:

-   case GL_ALPHA12:

-   case GL_ALPHA16:

-      return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;

-   case GL_LUMINANCE:

-   case GL_LUMINANCE4:

-   case GL_LUMINANCE8:

-   case GL_LUMINANCE12:

-   case GL_LUMINANCE16:

-      return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;

-   case GL_LUMINANCE_ALPHA:

-   case GL_LUMINANCE4_ALPHA4:

-   case GL_LUMINANCE6_ALPHA2:

-   case GL_LUMINANCE8_ALPHA8:

-   case GL_LUMINANCE12_ALPHA4:

-   case GL_LUMINANCE12_ALPHA12:

-   case GL_LUMINANCE16_ALPHA16:

-      return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;

-   case GL_INTENSITY:

-   case GL_INTENSITY4:

-   case GL_INTENSITY8:

-   case GL_INTENSITY12:

-   case GL_INTENSITY16:

-      return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;

-   case GL_RGB:

-   case GL_R3_G3_B2:

-   case GL_RGB4:

-   case GL_RGB5:

-   case GL_RGB8:

-   case GL_RGB10:

-   case GL_RGB12:

-   case GL_RGB16:

-   case GL_SRGB8_EXT:

-      return GL_RGB;

-   case GL_RGBA:

-   case GL_RGBA2:

-   case GL_RGBA4:

-   case GL_RGB5_A1:

-   case GL_RGBA8:

-   case GL_RGB10_A2:

-   case GL_RGBA12:

-   case GL_RGBA16:

-   case GL_RGBA16_SNORM:

-   case GL_SRGB8_ALPHA8_EXT:

-      return GL_RGBA;

-   case GL_STENCIL_INDEX:

-   case GL_STENCIL_INDEX1_EXT:

-   case GL_STENCIL_INDEX4_EXT:

-   case GL_STENCIL_INDEX8_EXT:

-   case GL_STENCIL_INDEX16_EXT:

-      return GL_STENCIL_INDEX;

-   case GL_DEPTH_COMPONENT:

-   case GL_DEPTH_COMPONENT16:

-   case GL_DEPTH_COMPONENT24:

-   case GL_DEPTH_COMPONENT32:

-      return GL_DEPTH_COMPONENT;

-   case GL_DEPTH_STENCIL_EXT:

-   case GL_DEPTH24_STENCIL8_EXT:

-      if (ctx->Extensions.EXT_packed_depth_stencil)

-         return GL_DEPTH_STENCIL_EXT;

-      else

-         return 0;

-   case GL_RED:

-   case GL_R8:

-   case GL_R16:

-      return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;

-   case GL_RG:

-   case GL_RG8:

-   case GL_RG16:

-      return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;

-   /* XXX add floating point and integer formats eventually */

-   default:

-      return 0;

-   }

-}

-

-

-/** sentinal value, see below */

-#define NO_SAMPLES 1000

-

-

-/**

- * Helper function used by _mesa_RenderbufferStorageEXT() and 

- * _mesa_RenderbufferStorageMultisample().

- * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().

- */

-static void

-renderbuffer_storage(GLenum target, GLenum internalFormat,

-                     GLsizei width, GLsizei height, GLsizei samples)

-{

-   const char *func = samples == NO_SAMPLES ?

-      "glRenderbufferStorage" : "RenderbufferStorageMultisample";

-   struct gl_renderbuffer *rb;

-   GLenum baseFormat;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (target != GL_RENDERBUFFER_EXT) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);

-      return;

-   }

-

-   baseFormat = _mesa_base_fbo_format(ctx, internalFormat);

-   if (baseFormat == 0) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);

-      return;

-   }

-

-   if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);

-      return;

-   }

-

-   if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);

-      return;

-   }

-

-   if (samples == NO_SAMPLES) {

-      /* NumSamples == 0 indicates non-multisampling */

-      samples = 0;

-   }

-   else if (samples > (GLsizei) ctx->Const.MaxSamples) {

-      /* note: driver may choose to use more samples than what's requested */

-      _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);

-      return;

-   }

-

-   rb = ctx->CurrentRenderbuffer;

-   if (!rb) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);

-      return;

-   }

-

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   if (rb->InternalFormat == internalFormat &&

-       rb->Width == (GLuint) width &&

-       rb->Height == (GLuint) height) {

-      /* no change in allocation needed */

-      return;

-   }

-

-   /* These MUST get set by the AllocStorage func */

-   rb->Format = MESA_FORMAT_NONE;

-   rb->NumSamples = samples;

-

-   /* Now allocate the storage */

-   ASSERT(rb->AllocStorage);

-   if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {

-      /* No error - check/set fields now */

-      assert(rb->Format != MESA_FORMAT_NONE);

-      assert(rb->Width == (GLuint) width);

-      assert(rb->Height == (GLuint) height);

-      rb->InternalFormat = internalFormat;

-      rb->_BaseFormat = baseFormat;

-      assert(rb->_BaseFormat != 0);

-   }

-   else {

-      /* Probably ran out of memory - clear the fields */

-      rb->Width = 0;

-      rb->Height = 0;

-      rb->Format = MESA_FORMAT_NONE;

-      rb->InternalFormat = GL_NONE;

-      rb->_BaseFormat = GL_NONE;

-      rb->NumSamples = 0;

-   }

-

-   /*

-   test_framebuffer_completeness(ctx, fb);

-   */

-   /* XXX if this renderbuffer is attached anywhere, invalidate attachment

-    * points???

-    */

-}

-

-

-#if FEATURE_OES_EGL_image

-void GLAPIENTRY

-_mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)

-{

-   struct gl_renderbuffer *rb;

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (!ctx->Extensions.OES_EGL_image) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glEGLImageTargetRenderbufferStorageOES(unsupported)");

-      return;

-   }

-

-   if (target != GL_RENDERBUFFER) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "EGLImageTargetRenderbufferStorageOES");

-      return;

-   }

-

-   rb = ctx->CurrentRenderbuffer;

-   if (!rb) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "EGLImageTargetRenderbufferStorageOES");

-      return;

-   }

-

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image);

-}

-#endif

-

-

-/**

- * Helper function for _mesa_GetRenderbufferParameterivEXT() and

- * _mesa_GetFramebufferAttachmentParameterivEXT()

- * We have to be careful to respect the base format.  For example, if a

- * renderbuffer/texture was created with internalFormat=GL_RGB but the

- * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE

- * we need to return zero.

- */

-static GLint

-get_component_bits(GLenum pname, GLenum baseFormat, gl_format format)

-{

-   switch (pname) {

-   case GL_RENDERBUFFER_RED_SIZE_EXT:

-   case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:

-      if (baseFormat == GL_RGB || baseFormat == GL_RGBA ||

-	  baseFormat == GL_RG || baseFormat == GL_RED)

-         return _mesa_get_format_bits(format, pname);

-      else

-         return 0;

-   case GL_RENDERBUFFER_GREEN_SIZE_EXT:

-   case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:

-      if (baseFormat == GL_RGB || baseFormat == GL_RGBA || baseFormat == GL_RG)

-         return _mesa_get_format_bits(format, pname);

-      else

-         return 0;

-   case GL_RENDERBUFFER_BLUE_SIZE_EXT:

-   case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:

-      if (baseFormat == GL_RGB || baseFormat == GL_RGBA)

-         return _mesa_get_format_bits(format, pname);

-      else

-         return 0;

-   case GL_RENDERBUFFER_ALPHA_SIZE_EXT:

-   case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:

-      if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA ||

-	  baseFormat == GL_LUMINANCE_ALPHA)

-         return _mesa_get_format_bits(format, pname);

-      else

-         return 0;

-   case GL_RENDERBUFFER_DEPTH_SIZE_EXT:

-   case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:

-      if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL)

-         return _mesa_get_format_bits(format, pname);

-      else

-         return 0;

-   case GL_RENDERBUFFER_STENCIL_SIZE_EXT:

-   case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:

-      if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL)

-         return _mesa_get_format_bits(format, pname);

-      else

-         return 0;

-   default:

-      return 0;

-   }

-}

-

-

-

-void GLAPIENTRY

-_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,

-                             GLsizei width, GLsizei height)

-{

-   /* GL_ARB_fbo says calling this function is equivalent to calling

-    * glRenderbufferStorageMultisample() with samples=0.  We pass in

-    * a token value here just for error reporting purposes.

-    */

-   renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES);

-}

-

-

-void GLAPIENTRY

-_mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples,

-                                     GLenum internalFormat,

-                                     GLsizei width, GLsizei height)

-{

-   renderbuffer_storage(target, internalFormat, width, height, samples);

-}

-

-

-/**

- * OpenGL ES version of glRenderBufferStorage.

- */

-void GLAPIENTRY

-_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,

-			   GLsizei width, GLsizei height)

-{

-   switch (internalFormat) {

-   case GL_RGB565:

-      /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */

-      /* choose a closest format */

-      internalFormat = GL_RGB5;

-      break;

-   default:

-      break;

-   }

-

-   renderbuffer_storage(target, internalFormat, width, height, 0);

-}

-

-

-void GLAPIENTRY

-_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)

-{

-   struct gl_renderbuffer *rb;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (target != GL_RENDERBUFFER_EXT) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glGetRenderbufferParameterivEXT(target)");

-      return;

-   }

-

-   rb = ctx->CurrentRenderbuffer;

-   if (!rb) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glGetRenderbufferParameterivEXT");

-      return;

-   }

-

-   /* No need to flush here since we're just quering state which is

-    * not effected by rendering.

-    */

-

-   switch (pname) {

-   case GL_RENDERBUFFER_WIDTH_EXT:

-      *params = rb->Width;

-      return;

-   case GL_RENDERBUFFER_HEIGHT_EXT:

-      *params = rb->Height;

-      return;

-   case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:

-      *params = rb->InternalFormat;

-      return;

-   case GL_RENDERBUFFER_RED_SIZE_EXT:

-   case GL_RENDERBUFFER_GREEN_SIZE_EXT:

-   case GL_RENDERBUFFER_BLUE_SIZE_EXT:

-   case GL_RENDERBUFFER_ALPHA_SIZE_EXT:

-   case GL_RENDERBUFFER_DEPTH_SIZE_EXT:

-   case GL_RENDERBUFFER_STENCIL_SIZE_EXT:

-      *params = get_component_bits(pname, rb->_BaseFormat, rb->Format);

-      break;

-   case GL_RENDERBUFFER_SAMPLES:

-      if (ctx->Extensions.ARB_framebuffer_object) {

-         *params = rb->NumSamples;

-         break;

-      }

-      /* fallthrough */

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glGetRenderbufferParameterivEXT(target)");

-      return;

-   }

-}

-

-

-GLboolean GLAPIENTRY

-_mesa_IsFramebufferEXT(GLuint framebuffer)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);

-   if (framebuffer) {

-      struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);

-      if (rb != NULL && rb != &DummyFramebuffer)

-         return GL_TRUE;

-   }

-   return GL_FALSE;

-}

-

-

-/**

- * Check if any of the attachments of the given framebuffer are textures

- * (render to texture).  Call ctx->Driver.RenderTexture() for such

- * attachments.

- */

-static void

-check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)

-{

-   GLuint i;

-   ASSERT(ctx->Driver.RenderTexture);

-

-   if (fb->Name == 0)

-      return; /* can't render to texture with winsys framebuffers */

-

-   for (i = 0; i < BUFFER_COUNT; i++) {

-      struct gl_renderbuffer_attachment *att = fb->Attachment + i;

-      struct gl_texture_object *texObj = att->Texture;

-      if (texObj

-          && texObj->Image[att->CubeMapFace][att->TextureLevel]) {

-         ctx->Driver.RenderTexture(ctx, fb, att);

-      }

-   }

-}

-

-

-/**

- * Examine all the framebuffer's attachments to see if any are textures.

- * If so, call ctx->Driver.FinishRenderTexture() for each texture to

- * notify the device driver that the texture image may have changed.

- */

-static void

-check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)

-{

-   if (fb->Name == 0)

-      return; /* can't render to texture with winsys framebuffers */

-

-   if (ctx->Driver.FinishRenderTexture) {

-      GLuint i;

-      for (i = 0; i < BUFFER_COUNT; i++) {

-         struct gl_renderbuffer_attachment *att = fb->Attachment + i;

-         if (att->Texture && att->Renderbuffer) {

-            ctx->Driver.FinishRenderTexture(ctx, att);

-         }

-      }

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)

-{

-   struct gl_framebuffer *newDrawFb, *newReadFb;

-   struct gl_framebuffer *oldDrawFb, *oldReadFb;

-   GLboolean bindReadBuf, bindDrawBuf;

-   GET_CURRENT_CONTEXT(ctx);

-

-#ifdef DEBUG

-   if (ctx->Extensions.ARB_framebuffer_object) {

-      ASSERT(ctx->Extensions.EXT_framebuffer_object);

-      ASSERT(ctx->Extensions.EXT_framebuffer_blit);

-   }

-#endif

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (!ctx->Extensions.EXT_framebuffer_object) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glBindFramebufferEXT(unsupported)");

-      return;

-   }

-

-   switch (target) {

-#if FEATURE_EXT_framebuffer_blit

-   case GL_DRAW_FRAMEBUFFER_EXT:

-      if (!ctx->Extensions.EXT_framebuffer_blit) {

-         _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");

-         return;

-      }

-      bindDrawBuf = GL_TRUE;

-      bindReadBuf = GL_FALSE;

-      break;

-   case GL_READ_FRAMEBUFFER_EXT:

-      if (!ctx->Extensions.EXT_framebuffer_blit) {

-         _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");

-         return;

-      }

-      bindDrawBuf = GL_FALSE;

-      bindReadBuf = GL_TRUE;

-      break;

-#endif

-   case GL_FRAMEBUFFER_EXT:

-      bindDrawBuf = GL_TRUE;

-      bindReadBuf = GL_TRUE;

-      break;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");

-      return;

-   }

-

-   if (framebuffer) {

-      /* Binding a user-created framebuffer object */

-      newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);

-      if (newDrawFb == &DummyFramebuffer) {

-         /* ID was reserved, but no real framebuffer object made yet */

-         newDrawFb = NULL;

-      }

-      else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {

-         /* All FBO IDs must be Gen'd */

-         _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");

-         return;

-      }

-

-      if (!newDrawFb) {

-	 /* create new framebuffer object */

-	 newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);

-	 if (!newDrawFb) {

-	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");

-	    return;

-	 }

-         _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);

-      }

-      newReadFb = newDrawFb;

-   }

-   else {

-      /* Binding the window system framebuffer (which was originally set

-       * with MakeCurrent).

-       */

-      newDrawFb = ctx->WinSysDrawBuffer;

-      newReadFb = ctx->WinSysReadBuffer;

-   }

-

-   ASSERT(newDrawFb);

-   ASSERT(newDrawFb != &DummyFramebuffer);

-

-   /* save pointers to current/old framebuffers */

-   oldDrawFb = ctx->DrawBuffer;

-   oldReadFb = ctx->ReadBuffer;

-

-   /* check if really changing bindings */

-   if (oldDrawFb == newDrawFb)

-      bindDrawBuf = GL_FALSE;

-   if (oldReadFb == newReadFb)

-      bindReadBuf = GL_FALSE;

-

-   /*

-    * OK, now bind the new Draw/Read framebuffers, if they're changing.

-    *

-    * We also check if we're beginning and/or ending render-to-texture.

-    * When a framebuffer with texture attachments is unbound, call

-    * ctx->Driver.FinishRenderTexture().

-    * When a framebuffer with texture attachments is bound, call

-    * ctx->Driver.RenderTexture().

-    *

-    * Note that if the ReadBuffer has texture attachments we don't consider

-    * that a render-to-texture case.

-    */

-   if (bindReadBuf) {

-      FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-      /* check if old readbuffer was render-to-texture */

-      check_end_texture_render(ctx, oldReadFb);

-

-      _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);

-   }

-

-   if (bindDrawBuf) {

-      FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-      /* check if old read/draw buffers were render-to-texture */

-      if (!bindReadBuf)

-         check_end_texture_render(ctx, oldReadFb);

-

-      if (oldDrawFb != oldReadFb)

-         check_end_texture_render(ctx, oldDrawFb);

-

-      /* check if newly bound framebuffer has any texture attachments */

-      check_begin_texture_render(ctx, newDrawFb);

-

-      _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);

-   }

-

-   if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {

-      ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)

-{

-   GLint i;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   for (i = 0; i < n; i++) {

-      if (framebuffers[i] > 0) {

-	 struct gl_framebuffer *fb;

-	 fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);

-	 if (fb) {

-            ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);

-

-            /* check if deleting currently bound framebuffer object */

-            if (ctx->Extensions.EXT_framebuffer_blit) {

-               /* separate draw/read binding points */

-               if (fb == ctx->DrawBuffer) {

-                  /* bind default */

-                  ASSERT(fb->RefCount >= 2);

-                  _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);

-               }

-               if (fb == ctx->ReadBuffer) {

-                  /* bind default */

-                  ASSERT(fb->RefCount >= 2);

-                  _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);

-               }

-            }

-            else {

-               /* only one binding point for read/draw buffers */

-               if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {

-                  /* bind default */

-                  ASSERT(fb->RefCount >= 2);

-                  _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);

-               }    

-            }

-

-	    /* remove from hash table immediately, to free the ID */

-	    _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);

-

-            if (fb != &DummyFramebuffer) {

-               /* But the object will not be freed until it's no longer

-                * bound in any context.

-                */

-               _mesa_reference_framebuffer(&fb, NULL);

-	    }

-	 }

-      }

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLuint first;

-   GLint i;

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (n < 0) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");

-      return;

-   }

-

-   if (!framebuffers)

-      return;

-

-   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);

-

-   for (i = 0; i < n; i++) {

-      GLuint name = first + i;

-      framebuffers[i] = name;

-      /* insert dummy placeholder into hash table */

-      _glthread_LOCK_MUTEX(ctx->Shared->Mutex);

-      _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);

-      _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);

-   }

-}

-

-

-

-GLenum GLAPIENTRY

-_mesa_CheckFramebufferStatusEXT(GLenum target)

-{

-   struct gl_framebuffer *buffer;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);

-

-   switch (target) {

-#if FEATURE_EXT_framebuffer_blit

-   case GL_DRAW_FRAMEBUFFER_EXT:

-      if (!ctx->Extensions.EXT_framebuffer_blit) {

-         _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");

-         return 0;

-      }

-      buffer = ctx->DrawBuffer;

-      break;

-   case GL_READ_FRAMEBUFFER_EXT:

-      if (!ctx->Extensions.EXT_framebuffer_blit) {

-         _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");

-         return 0;

-      }

-      buffer = ctx->ReadBuffer;

-      break;

-#endif

-   case GL_FRAMEBUFFER_EXT:

-      buffer = ctx->DrawBuffer;

-      break;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");

-      return 0; /* formerly GL_FRAMEBUFFER_STATUS_ERROR_EXT */

-   }

-

-   if (buffer->Name == 0) {

-      /* The window system / default framebuffer is always complete */

-      return GL_FRAMEBUFFER_COMPLETE_EXT;

-   }

-

-   /* No need to flush here */

-

-   if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {

-      _mesa_test_framebuffer_completeness(ctx, buffer);

-   }

-

-   return buffer->_Status;

-}

-

-

-

-/**

- * Common code called by glFramebufferTexture1D/2D/3DEXT().

- */

-static void

-framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target, 

-                    GLenum attachment, GLenum textarget, GLuint texture,

-                    GLint level, GLint zoffset)

-{

-   struct gl_renderbuffer_attachment *att;

-   struct gl_texture_object *texObj = NULL;

-   struct gl_framebuffer *fb;

-   GLboolean error = GL_FALSE;

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   switch (target) {

-   case GL_READ_FRAMEBUFFER_EXT:

-      error = !ctx->Extensions.EXT_framebuffer_blit;

-      fb = ctx->ReadBuffer;

-      break;

-   case GL_DRAW_FRAMEBUFFER_EXT:

-      error = !ctx->Extensions.EXT_framebuffer_blit;

-      /* fall-through */

-   case GL_FRAMEBUFFER_EXT:

-      fb = ctx->DrawBuffer;

-      break;

-   default:

-      error = GL_TRUE;

-   }

-

-   if (error) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferTexture%sEXT(target=0x%x)", caller, target);

-      return;

-   }

-

-   ASSERT(fb);

-

-   /* check framebuffer binding */

-   if (fb->Name == 0) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glFramebufferTexture%sEXT", caller);

-      return;

-   }

-

-

-   /* The textarget, level, and zoffset parameters are only validated if

-    * texture is non-zero.

-    */

-   if (texture) {

-      GLboolean err = GL_TRUE;

-

-      texObj = _mesa_lookup_texture(ctx, texture);

-      if (texObj != NULL) {

-         if (textarget == 0) {

-            /* XXX what's the purpose of this? */

-            err = (texObj->Target != GL_TEXTURE_3D) &&

-                (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&

-                (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);

-         }

-         else {

-            err = (texObj->Target == GL_TEXTURE_CUBE_MAP)

-                ? !IS_CUBE_FACE(textarget)

-                : (texObj->Target != textarget);

-         }

-      }

-      else {

-         /* can't render to a non-existant texture */

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glFramebufferTexture%sEXT(non existant texture)",

-                     caller);

-         return;

-      }

-

-      if (err) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glFramebufferTexture%sEXT(texture target mismatch)",

-                     caller);

-         return;

-      }

-

-      if (texObj->Target == GL_TEXTURE_3D) {

-         const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);

-         if (zoffset < 0 || zoffset >= maxSize) {

-            _mesa_error(ctx, GL_INVALID_VALUE,

-                        "glFramebufferTexture%sEXT(zoffset)", caller);

-            return;

-         }

-      }

-      else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||

-               (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {

-         if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {

-            _mesa_error(ctx, GL_INVALID_VALUE,

-                        "glFramebufferTexture%sEXT(layer)", caller);

-            return;

-         }

-      }

-

-      if ((level < 0) || 

-          (level >= _mesa_max_texture_levels(ctx, texObj->Target))) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glFramebufferTexture%sEXT(level)", caller);

-         return;

-      }

-   }

-

-   att = _mesa_get_attachment(ctx, fb, attachment);

-   if (att == NULL) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferTexture%sEXT(attachment)", caller);

-      return;

-   }

-

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   _glthread_LOCK_MUTEX(fb->Mutex);

-   if (texObj) {

-      _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,

-                                   level, zoffset);

-      /* Set the render-to-texture flag.  We'll check this flag in

-       * glTexImage() and friends to determine if we need to revalidate

-       * any FBOs that might be rendering into this texture.

-       * This flag never gets cleared since it's non-trivial to determine

-       * when all FBOs might be done rendering to this texture.  That's OK

-       * though since it's uncommon to render to a texture then repeatedly

-       * call glTexImage() to change images in the texture.

-       */

-      texObj->_RenderToTexture = GL_TRUE;

-   }

-   else {

-      _mesa_remove_attachment(ctx, att);

-   }

-

-   invalidate_framebuffer(fb);

-

-   _glthread_UNLOCK_MUTEX(fb->Mutex);

-}

-

-

-

-void GLAPIENTRY

-_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,

-                              GLenum textarget, GLuint texture, GLint level)

-{

-   GET_CURRENT_CONTEXT(ctx);

-

-   if ((texture != 0) && (textarget != GL_TEXTURE_1D)) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferTexture1DEXT(textarget)");

-      return;

-   }

-

-   framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,

-                       level, 0);

-}

-

-

-void GLAPIENTRY

-_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,

-                              GLenum textarget, GLuint texture, GLint level)

-{

-   GET_CURRENT_CONTEXT(ctx);

-

-   if ((texture != 0) &&

-       (textarget != GL_TEXTURE_2D) &&

-       (textarget != GL_TEXTURE_RECTANGLE_ARB) &&

-       (!IS_CUBE_FACE(textarget))) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glFramebufferTexture2DEXT(textarget=0x%x)", textarget);

-      return;

-   }

-

-   framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,

-                       level, 0);

-}

-

-

-void GLAPIENTRY

-_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,

-                              GLenum textarget, GLuint texture,

-                              GLint level, GLint zoffset)

-{

-   GET_CURRENT_CONTEXT(ctx);

-

-   if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferTexture3DEXT(textarget)");

-      return;

-   }

-

-   framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,

-                       level, zoffset);

-}

-

-

-void GLAPIENTRY

-_mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,

-                                 GLuint texture, GLint level, GLint layer)

-{

-   GET_CURRENT_CONTEXT(ctx);

-

-   framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,

-                       level, layer);

-}

-

-

-void GLAPIENTRY

-_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,

-                                 GLenum renderbufferTarget,

-                                 GLuint renderbuffer)

-{

-   struct gl_renderbuffer_attachment *att;

-   struct gl_framebuffer *fb;

-   struct gl_renderbuffer *rb;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   switch (target) {

-#if FEATURE_EXT_framebuffer_blit

-   case GL_DRAW_FRAMEBUFFER_EXT:

-      if (!ctx->Extensions.EXT_framebuffer_blit) {

-         _mesa_error(ctx, GL_INVALID_ENUM,

-                     "glFramebufferRenderbufferEXT(target)");

-         return;

-      }

-      fb = ctx->DrawBuffer;

-      break;

-   case GL_READ_FRAMEBUFFER_EXT:

-      if (!ctx->Extensions.EXT_framebuffer_blit) {

-         _mesa_error(ctx, GL_INVALID_ENUM,

-                     "glFramebufferRenderbufferEXT(target)");

-         return;

-      }

-      fb = ctx->ReadBuffer;

-      break;

-#endif

-   case GL_FRAMEBUFFER_EXT:

-      fb = ctx->DrawBuffer;

-      break;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferRenderbufferEXT(target)");

-      return;

-   }

-

-   if (renderbufferTarget != GL_RENDERBUFFER_EXT) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferRenderbufferEXT(renderbufferTarget)");

-      return;

-   }

-

-   if (fb->Name == 0) {

-      /* Can't attach new renderbuffers to a window system framebuffer */

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");

-      return;

-   }

-

-   att = _mesa_get_attachment(ctx, fb, attachment);

-   if (att == NULL) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferRenderbufferEXT(invalid attachment %s)",

-                  _mesa_lookup_enum_by_nr(attachment));

-      return;

-   }

-

-   if (renderbuffer) {

-      rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);

-      if (!rb) {

-	 _mesa_error(ctx, GL_INVALID_OPERATION,

-		     "glFramebufferRenderbufferEXT(non-existant"

-                     " renderbuffer %u)", renderbuffer);

-	 return;

-      }

-      else if (rb == &DummyRenderbuffer) {

-         /* This is what NVIDIA does */

-	 _mesa_error(ctx, GL_INVALID_VALUE,

-		     "glFramebufferRenderbufferEXT(renderbuffer %u)",

-                     renderbuffer);

-	 return;

-      }

-   }

-   else {

-      /* remove renderbuffer attachment */

-      rb = NULL;

-   }

-

-   if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&

-       rb && rb->Format != MESA_FORMAT_NONE) {

-      /* make sure the renderbuffer is a depth/stencil format */

-      const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);

-      if (baseFormat != GL_DEPTH_STENCIL) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glFramebufferRenderbufferEXT(renderbuffer"

-                     " is not DEPTH_STENCIL format)");

-         return;

-      }

-   }

-

-

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   assert(ctx->Driver.FramebufferRenderbuffer);

-   ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);

-

-   /* Some subsequent GL commands may depend on the framebuffer's visual

-    * after the binding is updated.  Update visual info now.

-    */

-   _mesa_update_framebuffer_visual(ctx, fb);

-}

-

-

-void GLAPIENTRY

-_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,

-                                             GLenum pname, GLint *params)

-{

-   const struct gl_renderbuffer_attachment *att;

-   struct gl_framebuffer *buffer;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   switch (target) {

-#if FEATURE_EXT_framebuffer_blit

-   case GL_DRAW_FRAMEBUFFER_EXT:

-      if (!ctx->Extensions.EXT_framebuffer_blit) {

-         _mesa_error(ctx, GL_INVALID_ENUM,

-                     "glGetFramebufferAttachmentParameterivEXT(target)");

-         return;

-      }

-      buffer = ctx->DrawBuffer;

-      break;

-   case GL_READ_FRAMEBUFFER_EXT:

-      if (!ctx->Extensions.EXT_framebuffer_blit) {

-         _mesa_error(ctx, GL_INVALID_ENUM,

-                     "glGetFramebufferAttachmentParameterivEXT(target)");

-         return;

-      }

-      buffer = ctx->ReadBuffer;

-      break;

-#endif

-   case GL_FRAMEBUFFER_EXT:

-      buffer = ctx->DrawBuffer;

-      break;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glGetFramebufferAttachmentParameterivEXT(target)");

-      return;

-   }

-

-   if (buffer->Name == 0) {

-      /* the default / window-system FBO */

-      att = _mesa_get_fb0_attachment(ctx, buffer, attachment);

-   }

-   else {

-      /* user-created framebuffer FBO */

-      att = _mesa_get_attachment(ctx, buffer, attachment);

-   }

-

-   if (att == NULL) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glGetFramebufferAttachmentParameterivEXT(attachment)");

-      return;

-   }

-

-   if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {

-      /* the depth and stencil attachments must point to the same buffer */

-      const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;

-      depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);

-      stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);

-      if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"

-                     " attachments differ)");

-         return;

-      }

-   }

-

-   /* No need to flush here */

-

-   switch (pname) {

-   case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:

-      *params = buffer->Name == 0 ? GL_FRAMEBUFFER_DEFAULT : att->Type;

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:

-      if (att->Type == GL_RENDERBUFFER_EXT) {

-	 *params = att->Renderbuffer->Name;

-      }

-      else if (att->Type == GL_TEXTURE) {

-	 *params = att->Texture->Name;

-      }

-      else {

-         assert(att->Type == GL_NONE);

-         *params = 0;

-      }

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:

-      if (att->Type == GL_TEXTURE) {

-	 *params = att->TextureLevel;

-      }

-      else {

-	 _mesa_error(ctx, GL_INVALID_ENUM,

-		     "glGetFramebufferAttachmentParameterivEXT(pname)");

-      }

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:

-      if (att->Type == GL_TEXTURE) {

-         if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {

-            *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;

-         }

-         else {

-            *params = 0;

-         }

-      }

-      else {

-	 _mesa_error(ctx, GL_INVALID_ENUM,

-		     "glGetFramebufferAttachmentParameterivEXT(pname)");

-      }

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:

-      if (att->Type == GL_TEXTURE) {

-         if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {

-            *params = att->Zoffset;

-         }

-         else {

-            *params = 0;

-         }

-      }

-      else {

-	 _mesa_error(ctx, GL_INVALID_ENUM,

-		     "glGetFramebufferAttachmentParameterivEXT(pname)");

-      }

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:

-      if (!ctx->Extensions.ARB_framebuffer_object) {

-         _mesa_error(ctx, GL_INVALID_ENUM,

-                     "glGetFramebufferAttachmentParameterivEXT(pname)");

-      }

-      else {

-         if (ctx->Extensions.EXT_framebuffer_sRGB && ctx->Const.sRGBCapable) {

-            *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);

-         }

-         else {

-            /* According to ARB_framebuffer_sRGB, we should return LINEAR

-             * if the sRGB conversion is unsupported. */

-            *params = GL_LINEAR;

-         }

-      }

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:

-      if (!ctx->Extensions.ARB_framebuffer_object) {

-         _mesa_error(ctx, GL_INVALID_ENUM,

-                     "glGetFramebufferAttachmentParameterivEXT(pname)");

-         return;

-      }

-      else {

-         gl_format format = att->Renderbuffer->Format;

-         if (format == MESA_FORMAT_CI8 || format == MESA_FORMAT_S8) {

-            /* special cases */

-            *params = GL_INDEX;

-         }

-         else {

-            *params = _mesa_get_format_datatype(format);

-         }

-      }

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:

-   case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:

-   case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:

-   case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:

-   case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:

-   case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:

-      if (!ctx->Extensions.ARB_framebuffer_object) {

-         _mesa_error(ctx, GL_INVALID_ENUM,

-                     "glGetFramebufferAttachmentParameterivEXT(pname)");

-      }

-      else if (att->Texture) {

-         const struct gl_texture_image *texImage =

-            _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,

-                                   att->TextureLevel);

-         if (texImage) {

-            *params = get_component_bits(pname, texImage->_BaseFormat,

-                                         texImage->TexFormat);

-         }

-         else {

-            *params = 0;

-         }

-      }

-      else if (att->Renderbuffer) {

-         *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,

-                                      att->Renderbuffer->Format);

-      }

-      else {

-         *params = 0;

-      }

-      return;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glGetFramebufferAttachmentParameterivEXT(pname)");

-      return;

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_GenerateMipmapEXT(GLenum target)

-{

-   struct gl_texture_object *texObj;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   switch (target) {

-   case GL_TEXTURE_1D:

-   case GL_TEXTURE_2D:

-   case GL_TEXTURE_3D:

-   case GL_TEXTURE_CUBE_MAP:

-      /* OK, legal value */

-      break;

-   default:

-      /* XXX need to implement GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY */

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)");

-      return;

-   }

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-

-   if (texObj->BaseLevel >= texObj->MaxLevel) {

-      /* nothing to do */

-      return;

-   }

-

-   if (texObj->Target == GL_TEXTURE_CUBE_MAP &&

-       !_mesa_cube_complete(texObj)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glGenerateMipmap(incomplete cube map)");

-      return;

-   }

-

-   _mesa_lock_texture(ctx, texObj);

-   if (target == GL_TEXTURE_CUBE_MAP) {

-      GLuint face;

-      for (face = 0; face < 6; face++)

-	 ctx->Driver.GenerateMipmap(ctx,

-				    GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,

-				    texObj);

-   }

-   else {

-      ctx->Driver.GenerateMipmap(ctx, target, texObj);

-   }

-   _mesa_unlock_texture(ctx, texObj);

-}

-

-

-#if FEATURE_EXT_framebuffer_blit

-

-static const struct gl_renderbuffer_attachment *

-find_attachment(const struct gl_framebuffer *fb,

-                const struct gl_renderbuffer *rb)

-{

-   GLuint i;

-   for (i = 0; i < Elements(fb->Attachment); i++) {

-      if (fb->Attachment[i].Renderbuffer == rb)

-         return &fb->Attachment[i];

-   }

-   return NULL;

-}

-

-

-

-/**

- * Blit rectangular region, optionally from one framebuffer to another.

- *

- * Note, if the src buffer is multisampled and the dest is not, this is

- * when the samples must be resolved to a single color.

- */

-void GLAPIENTRY

-_mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,

-                         GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,

-                         GLbitfield mask, GLenum filter)

-{

-   const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |

-                                     GL_DEPTH_BUFFER_BIT |

-                                     GL_STENCIL_BUFFER_BIT);

-   const struct gl_framebuffer *readFb, *drawFb;

-   const struct gl_renderbuffer *colorReadRb, *colorDrawRb;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   if (MESA_VERBOSE & VERBOSE_API)

-      _mesa_debug(ctx,

-                  "glBlitFramebuffer(%d, %d, %d, %d,  %d, %d, %d, %d, 0x%x, %s)\n",

-                  srcX0, srcY0, srcX1, srcY1,

-                  dstX0, dstY0, dstX1, dstY1,

-                  mask, _mesa_lookup_enum_by_nr(filter));

-

-   if (ctx->NewState) {

-      _mesa_update_state(ctx);

-   }

-

-   readFb = ctx->ReadBuffer;

-   drawFb = ctx->DrawBuffer;

-

-   if (!readFb || !drawFb) {

-      /* This will normally never happen but someday we may want to

-       * support MakeCurrent() with no drawables.

-       */

-      return;

-   }

-

-   /* check for complete framebuffers */

-   if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||

-       readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,

-                  "glBlitFramebufferEXT(incomplete draw/read buffers)");

-      return;

-   }

-

-   if (filter != GL_NEAREST && filter != GL_LINEAR) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");

-      return;

-   }

-

-   if (mask & ~legalMaskBits) {

-      _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");

-      return;

-   }

-

-   /* depth/stencil must be blitted with nearest filtering */

-   if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))

-        && filter != GL_NEAREST) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-             "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter");

-      return;

-   }

-

-   /* get color read/draw renderbuffers */

-   if (mask & GL_COLOR_BUFFER_BIT) {

-      colorReadRb = readFb->_ColorReadBuffer;

-      colorDrawRb = drawFb->_ColorDrawBuffers[0];

-   }

-   else {

-      colorReadRb = colorDrawRb = NULL;

-   }

-

-   if (mask & GL_STENCIL_BUFFER_BIT) {

-      struct gl_renderbuffer *readRb = readFb->_StencilBuffer;

-      struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer;

-      if (!readRb ||

-          !drawRb ||

-          _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) != 

-          _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glBlitFramebufferEXT(stencil buffer size mismatch");

-         return;

-      }

-   }

-

-   if (mask & GL_DEPTH_BUFFER_BIT) {

-      struct gl_renderbuffer *readRb = readFb->_DepthBuffer;

-      struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer;

-      if (!readRb ||

-          !drawRb ||

-          _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) != 

-          _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glBlitFramebufferEXT(depth buffer size mismatch");

-         return;

-      }

-   }

-

-   if (readFb->Visual.samples > 0 &&

-       drawFb->Visual.samples > 0 &&

-       readFb->Visual.samples != drawFb->Visual.samples) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glBlitFramebufferEXT(mismatched samples");

-      return;

-   }

-

-   /* extra checks for multisample copies... */

-   if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {

-      /* src and dest region sizes must be the same */

-      if (srcX1 - srcX0 != dstX1 - dstX0 ||

-          srcY1 - srcY0 != dstY1 - dstY0) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                "glBlitFramebufferEXT(bad src/dst multisample region sizes");

-         return;

-      }

-

-      /* color formats must match */

-      if (colorReadRb &&

-          colorDrawRb &&

-          colorReadRb->Format != colorDrawRb->Format) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                "glBlitFramebufferEXT(bad src/dst multisample pixel formats");

-         return;

-      }

-   }

-

-   if (!ctx->Extensions.EXT_framebuffer_blit) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");

-      return;

-   }

-

-   /* Debug code */

-   if (DEBUG_BLIT) {

-      printf("glBlitFramebuffer(%d, %d, %d, %d,  %d, %d, %d, %d,"

-	     " 0x%x, 0x%x)\n",

-	     srcX0, srcY0, srcX1, srcY1,

-	     dstX0, dstY0, dstX1, dstY1,

-	     mask, filter);

-      if (colorReadRb) {

-         const struct gl_renderbuffer_attachment *att;

-

-         att = find_attachment(readFb, colorReadRb);

-         printf("  Src FBO %u  RB %u (%dx%d)  ",

-		readFb->Name, colorReadRb->Name,

-		colorReadRb->Width, colorReadRb->Height);

-         if (att && att->Texture) {

-            printf("Tex %u  tgt 0x%x  level %u  face %u",

-		   att->Texture->Name,

-		   att->Texture->Target,

-		   att->TextureLevel,

-		   att->CubeMapFace);

-         }

-         printf("\n");

-

-         att = find_attachment(drawFb, colorDrawRb);

-         printf("  Dst FBO %u  RB %u (%dx%d)  ",

-		drawFb->Name, colorDrawRb->Name,

-		colorDrawRb->Width, colorDrawRb->Height);

-         if (att && att->Texture) {

-            printf("Tex %u  tgt 0x%x  level %u  face %u",

-		   att->Texture->Name,

-		   att->Texture->Target,

-		   att->TextureLevel,

-		   att->CubeMapFace);

-         }

-         printf("\n");

-      }

-   }

-

-   ASSERT(ctx->Driver.BlitFramebuffer);

-   ctx->Driver.BlitFramebuffer(ctx,

-                               srcX0, srcY0, srcX1, srcY1,

-                               dstX0, dstY0, dstX1, dstY1,

-                               mask, filter);

-}

-#endif /* FEATURE_EXT_framebuffer_blit */

-

-#if FEATURE_ARB_geometry_shader4

-void GLAPIENTRY

-_mesa_FramebufferTextureARB(GLenum target, GLenum attachment,

-                            GLuint texture, GLint level)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   _mesa_error(ctx, GL_INVALID_OPERATION,

-               "glFramebufferTextureARB "

-               "not implemented!");

-}

-

-void GLAPIENTRY

-_mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,

-                                GLuint texture, GLint level, GLenum face)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   _mesa_error(ctx, GL_INVALID_OPERATION,

-               "glFramebufferTextureFaceARB "

-               "not implemented!");

-}

-#endif /* FEATURE_ARB_geometry_shader4 */

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/*
+ * GL_EXT/ARB_framebuffer_object extensions
+ *
+ * Authors:
+ *   Brian Paul
+ */
+
+
+#include "buffers.h"
+#include "context.h"
+#include "enums.h"
+#include "fbobject.h"
+#include "formats.h"
+#include "framebuffer.h"
+#include "hash.h"
+#include "macros.h"
+#include "mfeatures.h"
+#include "mtypes.h"
+#include "renderbuffer.h"
+#include "state.h"
+#include "teximage.h"
+#include "texobj.h"
+
+
+/** Set this to 1 to help debug FBO incompleteness problems */
+#define DEBUG_FBO 0
+
+/** Set this to 1 to debug/log glBlitFramebuffer() calls */
+#define DEBUG_BLIT 0
+
+
+/**
+ * Notes:
+ *
+ * None of the GL_EXT_framebuffer_object functions are compiled into
+ * display lists.
+ */
+
+
+
+/*
+ * When glGenRender/FramebuffersEXT() is called we insert pointers to
+ * these placeholder objects into the hash table.
+ * Later, when the object ID is first bound, we replace the placeholder
+ * with the real frame/renderbuffer.
+ */
+static struct gl_framebuffer DummyFramebuffer;
+static struct gl_renderbuffer DummyRenderbuffer;
+
+/* We bind this framebuffer when applications pass a NULL
+ * drawable/surface in make current. */
+static struct gl_framebuffer IncompleteFramebuffer;
+
+
+#define IS_CUBE_FACE(TARGET) \
+   ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \
+    (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)
+
+
+static void
+delete_dummy_renderbuffer(struct gl_renderbuffer *rb)
+{
+   /* no op */
+}
+
+static void
+delete_dummy_framebuffer(struct gl_framebuffer *fb)
+{
+   /* no op */
+}
+
+
+void
+_mesa_init_fbobjects(struct gl_context *ctx)
+{
+   _glthread_INIT_MUTEX(DummyFramebuffer.Mutex);
+   _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);
+   _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);
+   DummyFramebuffer.Delete = delete_dummy_framebuffer;
+   DummyRenderbuffer.Delete = delete_dummy_renderbuffer;
+   IncompleteFramebuffer.Delete = delete_dummy_framebuffer;
+}
+
+struct gl_framebuffer *
+_mesa_get_incomplete_framebuffer(void)
+{
+   return &IncompleteFramebuffer;
+}
+
+/**
+ * Helper routine for getting a gl_renderbuffer.
+ */
+struct gl_renderbuffer *
+_mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)
+{
+   struct gl_renderbuffer *rb;
+
+   if (id == 0)
+      return NULL;
+
+   rb = (struct gl_renderbuffer *)
+      _mesa_HashLookup(ctx->Shared->RenderBuffers, id);
+   return rb;
+}
+
+
+/**
+ * Helper routine for getting a gl_framebuffer.
+ */
+struct gl_framebuffer *
+_mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)
+{
+   struct gl_framebuffer *fb;
+
+   if (id == 0)
+      return NULL;
+
+   fb = (struct gl_framebuffer *)
+      _mesa_HashLookup(ctx->Shared->FrameBuffers, id);
+   return fb;
+}
+
+
+/**
+ * Mark the given framebuffer as invalid.  This will force the
+ * test for framebuffer completeness to be done before the framebuffer
+ * is used.
+ */
+static void
+invalidate_framebuffer(struct gl_framebuffer *fb)
+{
+   fb->_Status = 0; /* "indeterminate" */
+}
+
+
+/**
+ * Return the gl_framebuffer object which corresponds to the given
+ * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
+ * Check support for GL_EXT_framebuffer_blit to determine if certain
+ * targets are legal.
+ * \return gl_framebuffer pointer or NULL if target is illegal
+ */
+static struct gl_framebuffer *
+get_framebuffer_target(struct gl_context *ctx, GLenum target)
+{
+   switch (target) {
+   case GL_DRAW_FRAMEBUFFER:
+      return ctx->Extensions.EXT_framebuffer_blit ? ctx->DrawBuffer : NULL;
+   case GL_READ_FRAMEBUFFER:
+      return ctx->Extensions.EXT_framebuffer_blit ? ctx->ReadBuffer : NULL;
+   case GL_FRAMEBUFFER_EXT:
+      return ctx->DrawBuffer;
+   default:
+      return NULL;
+   }
+}
+
+
+/**
+ * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
+ * gl_renderbuffer_attachment object.
+ * This function is only used for user-created FB objects, not the
+ * default / window-system FB object.
+ * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
+ * the depth buffer attachment point.
+ */
+struct gl_renderbuffer_attachment *
+_mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
+                     GLenum attachment)
+{
+   GLuint i;
+
+   assert(fb->Name > 0);
+
+   switch (attachment) {
+   case GL_COLOR_ATTACHMENT0_EXT:
+   case GL_COLOR_ATTACHMENT1_EXT:
+   case GL_COLOR_ATTACHMENT2_EXT:
+   case GL_COLOR_ATTACHMENT3_EXT:
+   case GL_COLOR_ATTACHMENT4_EXT:
+   case GL_COLOR_ATTACHMENT5_EXT:
+   case GL_COLOR_ATTACHMENT6_EXT:
+   case GL_COLOR_ATTACHMENT7_EXT:
+   case GL_COLOR_ATTACHMENT8_EXT:
+   case GL_COLOR_ATTACHMENT9_EXT:
+   case GL_COLOR_ATTACHMENT10_EXT:
+   case GL_COLOR_ATTACHMENT11_EXT:
+   case GL_COLOR_ATTACHMENT12_EXT:
+   case GL_COLOR_ATTACHMENT13_EXT:
+   case GL_COLOR_ATTACHMENT14_EXT:
+   case GL_COLOR_ATTACHMENT15_EXT:
+      i = attachment - GL_COLOR_ATTACHMENT0_EXT;
+      if (i >= ctx->Const.MaxColorAttachments) {
+	 return NULL;
+      }
+      return &fb->Attachment[BUFFER_COLOR0 + i];
+   case GL_DEPTH_STENCIL_ATTACHMENT:
+      /* fall-through */
+   case GL_DEPTH_BUFFER:
+      /* fall-through / new in GL 3.0 */
+   case GL_DEPTH_ATTACHMENT_EXT:
+      return &fb->Attachment[BUFFER_DEPTH];
+   case GL_STENCIL_BUFFER:
+      /* fall-through / new in GL 3.0 */
+   case GL_STENCIL_ATTACHMENT_EXT:
+      return &fb->Attachment[BUFFER_STENCIL];
+   default:
+      return NULL;
+   }
+}
+
+
+/**
+ * As above, but only used for getting attachments of the default /
+ * window-system framebuffer (not user-created framebuffer objects).
+ */
+static struct gl_renderbuffer_attachment *
+_mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
+                         GLenum attachment)
+{
+   assert(fb->Name == 0);
+
+   switch (attachment) {
+   case GL_FRONT_LEFT:
+      return &fb->Attachment[BUFFER_FRONT_LEFT];
+   case GL_FRONT_RIGHT:
+      return &fb->Attachment[BUFFER_FRONT_RIGHT];
+   case GL_BACK_LEFT:
+      return &fb->Attachment[BUFFER_BACK_LEFT];
+   case GL_BACK_RIGHT:
+      return &fb->Attachment[BUFFER_BACK_RIGHT];
+   case GL_AUX0:
+      if (fb->Visual.numAuxBuffers == 1) {
+         return &fb->Attachment[BUFFER_AUX0];
+      }
+      return NULL;
+   case GL_DEPTH_BUFFER:
+      /* fall-through / new in GL 3.0 */
+   case GL_DEPTH_ATTACHMENT_EXT:
+      return &fb->Attachment[BUFFER_DEPTH];
+   case GL_STENCIL_BUFFER:
+      /* fall-through / new in GL 3.0 */
+   case GL_STENCIL_ATTACHMENT_EXT:
+      return &fb->Attachment[BUFFER_STENCIL];
+   default:
+      return NULL;
+   }
+}
+
+
+
+/**
+ * Remove any texture or renderbuffer attached to the given attachment
+ * point.  Update reference counts, etc.
+ */
+void
+_mesa_remove_attachment(struct gl_context *ctx,
+                        struct gl_renderbuffer_attachment *att)
+{
+   if (att->Type == GL_TEXTURE) {
+      ASSERT(att->Texture);
+      if (ctx->Driver.FinishRenderTexture) {
+         /* tell driver that we're done rendering to this texture. */
+         ctx->Driver.FinishRenderTexture(ctx, att);
+      }
+      _mesa_reference_texobj(&att->Texture, NULL); /* unbind */
+      ASSERT(!att->Texture);
+   }
+   if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {
+      ASSERT(!att->Texture);
+      _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */
+      ASSERT(!att->Renderbuffer);
+   }
+   att->Type = GL_NONE;
+   att->Complete = GL_TRUE;
+}
+
+
+/**
+ * Bind a texture object to an attachment point.
+ * The previous binding, if any, will be removed first.
+ */
+void
+_mesa_set_texture_attachment(struct gl_context *ctx,
+                             struct gl_framebuffer *fb,
+                             struct gl_renderbuffer_attachment *att,
+                             struct gl_texture_object *texObj,
+                             GLenum texTarget, GLuint level, GLuint zoffset)
+{
+   if (att->Texture == texObj) {
+      /* re-attaching same texture */
+      ASSERT(att->Type == GL_TEXTURE);
+      if (ctx->Driver.FinishRenderTexture)
+	 ctx->Driver.FinishRenderTexture(ctx, att);
+   }
+   else {
+      /* new attachment */
+      if (ctx->Driver.FinishRenderTexture && att->Texture)
+	 ctx->Driver.FinishRenderTexture(ctx, att);
+      _mesa_remove_attachment(ctx, att);
+      att->Type = GL_TEXTURE;
+      assert(!att->Texture);
+      _mesa_reference_texobj(&att->Texture, texObj);
+   }
+
+   /* always update these fields */
+   att->TextureLevel = level;
+   att->CubeMapFace = _mesa_tex_target_to_face(texTarget);
+   att->Zoffset = zoffset;
+   att->Complete = GL_FALSE;
+
+   if (att->Texture->Image[att->CubeMapFace][att->TextureLevel]) {
+      ctx->Driver.RenderTexture(ctx, fb, att);
+   }
+
+   invalidate_framebuffer(fb);
+}
+
+
+/**
+ * Bind a renderbuffer to an attachment point.
+ * The previous binding, if any, will be removed first.
+ */
+void
+_mesa_set_renderbuffer_attachment(struct gl_context *ctx,
+                                  struct gl_renderbuffer_attachment *att,
+                                  struct gl_renderbuffer *rb)
+{
+   /* XXX check if re-doing same attachment, exit early */
+   _mesa_remove_attachment(ctx, att);
+   att->Type = GL_RENDERBUFFER_EXT;
+   att->Texture = NULL; /* just to be safe */
+   att->Complete = GL_FALSE;
+   _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
+}
+
+
+/**
+ * Fallback for ctx->Driver.FramebufferRenderbuffer()
+ * Attach a renderbuffer object to a framebuffer object.
+ */
+void
+_mesa_framebuffer_renderbuffer(struct gl_context *ctx,
+                               struct gl_framebuffer *fb,
+                               GLenum attachment, struct gl_renderbuffer *rb)
+{
+   struct gl_renderbuffer_attachment *att;
+
+   _glthread_LOCK_MUTEX(fb->Mutex);
+
+   att = _mesa_get_attachment(ctx, fb, attachment);
+   ASSERT(att);
+   if (rb) {
+      _mesa_set_renderbuffer_attachment(ctx, att, rb);
+      if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
+         /* do stencil attachment here (depth already done above) */
+         att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);
+         assert(att);
+         _mesa_set_renderbuffer_attachment(ctx, att, rb);
+      }
+   }
+   else {
+      _mesa_remove_attachment(ctx, att);
+   }
+
+   invalidate_framebuffer(fb);
+
+   _glthread_UNLOCK_MUTEX(fb->Mutex);
+}
+
+
+/**
+ * Fallback for ctx->Driver.ValidateFramebuffer()
+ * Check if the renderbuffer's formats are supported by the software
+ * renderer.
+ * Drivers should probably override this.
+ */
+void
+_mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+   gl_buffer_index buf;
+   for (buf = 0; buf < BUFFER_COUNT; buf++) {
+      const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;
+      if (rb) {
+         switch (rb->_BaseFormat) {
+         case GL_ALPHA:
+         case GL_LUMINANCE_ALPHA:
+         case GL_LUMINANCE:
+         case GL_INTENSITY:
+         case GL_RED:
+         case GL_RG:
+            fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
+            return;
+         default:
+            /* render buffer format is supported by software rendering */
+            ;
+         }
+      }
+   }
+}
+
+
+/**
+ * For debug only.
+ */
+static void
+att_incomplete(const char *msg)
+{
+#if DEBUG_FBO
+   _mesa_debug(NULL, "attachment incomplete: %s\n", msg);
+#else
+   (void) msg;
+#endif
+}
+
+
+/**
+ * For debug only.
+ */
+static void
+fbo_incomplete(const char *msg, int index)
+{
+#if DEBUG_FBO
+   _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
+#else
+   (void) msg;
+   (void) index;
+#endif
+}
+
+
+/**
+ * Is the given base format a legal format for a color renderbuffer?
+ */
+GLboolean
+_mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)
+{
+   switch (baseFormat) {
+   case GL_RGB:
+   case GL_RGBA:
+      return GL_TRUE;
+   case GL_LUMINANCE:
+   case GL_LUMINANCE_ALPHA:
+   case GL_INTENSITY:
+   case GL_ALPHA:
+      return ctx->Extensions.ARB_framebuffer_object;
+   case GL_RED:
+   case GL_RG:
+      return ctx->Extensions.ARB_texture_rg;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Is the given base format a legal format for a depth/stencil renderbuffer?
+ */
+static GLboolean
+is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)
+{
+   switch (baseFormat) {
+   case GL_DEPTH_COMPONENT:
+   case GL_DEPTH_STENCIL_EXT:
+      return GL_TRUE;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Test if an attachment point is complete and update its Complete field.
+ * \param format if GL_COLOR, this is a color attachment point,
+ *               if GL_DEPTH, this is a depth component attachment point,
+ *               if GL_STENCIL, this is a stencil component attachment point.
+ */
+static void
+test_attachment_completeness(const struct gl_context *ctx, GLenum format,
+                             struct gl_renderbuffer_attachment *att)
+{
+   assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
+
+   /* assume complete */
+   att->Complete = GL_TRUE;
+
+   /* Look for reasons why the attachment might be incomplete */
+   if (att->Type == GL_TEXTURE) {
+      const struct gl_texture_object *texObj = att->Texture;
+      struct gl_texture_image *texImage;
+      GLenum baseFormat;
+
+      if (!texObj) {
+         att_incomplete("no texobj");
+         att->Complete = GL_FALSE;
+         return;
+      }
+
+      texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];
+      if (!texImage) {
+         att_incomplete("no teximage");
+         att->Complete = GL_FALSE;
+         return;
+      }
+      if (texImage->Width < 1 || texImage->Height < 1) {
+         att_incomplete("teximage width/height=0");
+         printf("texobj = %u\n", texObj->Name);
+         printf("level = %d\n", att->TextureLevel);
+         att->Complete = GL_FALSE;
+         return;
+      }
+      if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {
+         att_incomplete("bad z offset");
+         att->Complete = GL_FALSE;
+         return;
+      }
+
+      baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
+
+      if (format == GL_COLOR) {
+         if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
+            att_incomplete("bad format");
+            att->Complete = GL_FALSE;
+            return;
+         }
+         if (_mesa_is_format_compressed(texImage->TexFormat)) {
+            att_incomplete("compressed internalformat");
+            att->Complete = GL_FALSE;
+            return;
+         }
+      }
+      else if (format == GL_DEPTH) {
+         if (baseFormat == GL_DEPTH_COMPONENT) {
+            /* OK */
+         }
+         else if (ctx->Extensions.EXT_packed_depth_stencil &&
+                  ctx->Extensions.ARB_depth_texture &&
+                  baseFormat == GL_DEPTH_STENCIL_EXT) {
+            /* OK */
+         }
+         else {
+            att->Complete = GL_FALSE;
+            att_incomplete("bad depth format");
+            return;
+         }
+      }
+      else {
+         ASSERT(format == GL_STENCIL);
+         if (ctx->Extensions.EXT_packed_depth_stencil &&
+             ctx->Extensions.ARB_depth_texture &&
+             baseFormat == GL_DEPTH_STENCIL_EXT) {
+            /* OK */
+         }
+         else {
+            /* no such thing as stencil-only textures */
+            att_incomplete("illegal stencil texture");
+            att->Complete = GL_FALSE;
+            return;
+         }
+      }
+   }
+   else if (att->Type == GL_RENDERBUFFER_EXT) {
+      const GLenum baseFormat =
+         _mesa_get_format_base_format(att->Renderbuffer->Format);
+
+      ASSERT(att->Renderbuffer);
+      if (!att->Renderbuffer->InternalFormat ||
+          att->Renderbuffer->Width < 1 ||
+          att->Renderbuffer->Height < 1) {
+         att_incomplete("0x0 renderbuffer");
+         att->Complete = GL_FALSE;
+         return;
+      }
+      if (format == GL_COLOR) {
+         if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
+            att_incomplete("bad renderbuffer color format");
+            att->Complete = GL_FALSE;
+            return;
+         }
+      }
+      else if (format == GL_DEPTH) {
+         if (baseFormat == GL_DEPTH_COMPONENT) {
+            /* OK */
+         }
+         else if (ctx->Extensions.EXT_packed_depth_stencil &&
+                  baseFormat == GL_DEPTH_STENCIL_EXT) {
+            /* OK */
+         }
+         else {
+            att_incomplete("bad renderbuffer depth format");
+            att->Complete = GL_FALSE;
+            return;
+         }
+      }
+      else {
+         assert(format == GL_STENCIL);
+         if (baseFormat == GL_STENCIL_INDEX) {
+            /* OK */
+         }
+         else if (ctx->Extensions.EXT_packed_depth_stencil &&
+                  baseFormat == GL_DEPTH_STENCIL_EXT) {
+            /* OK */
+         }
+         else {
+            att->Complete = GL_FALSE;
+            att_incomplete("bad renderbuffer stencil format");
+            return;
+         }
+      }
+   }
+   else {
+      ASSERT(att->Type == GL_NONE);
+      /* complete */
+      return;
+   }
+}
+
+
+/**
+ * Test if the given framebuffer object is complete and update its
+ * Status field with the results.
+ * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
+ * driver to make hardware-specific validation/completeness checks.
+ * Also update the framebuffer's Width and Height fields if the
+ * framebuffer is complete.
+ */
+void
+_mesa_test_framebuffer_completeness(struct gl_context *ctx,
+                                    struct gl_framebuffer *fb)
+{
+   GLuint numImages;
+   GLenum intFormat = GL_NONE; /* color buffers' internal format */
+   GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;
+   GLint numSamples = -1;
+   GLint i;
+   GLuint j;
+
+   assert(fb->Name != 0);
+
+   numImages = 0;
+   fb->Width = 0;
+   fb->Height = 0;
+
+   /* Start at -2 to more easily loop over all attachment points.
+    *  -2: depth buffer
+    *  -1: stencil buffer
+    * >=0: color buffer
+    */
+   for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {
+      struct gl_renderbuffer_attachment *att;
+      GLenum f;
+      gl_format attFormat;
+
+      /*
+       * XXX for ARB_fbo, only check color buffers that are named by
+       * GL_READ_BUFFER and GL_DRAW_BUFFERi.
+       */
+
+      /* check for attachment completeness
+       */
+      if (i == -2) {
+         att = &fb->Attachment[BUFFER_DEPTH];
+         test_attachment_completeness(ctx, GL_DEPTH, att);
+         if (!att->Complete) {
+            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
+            fbo_incomplete("depth attachment incomplete", -1);
+            return;
+         }
+      }
+      else if (i == -1) {
+         att = &fb->Attachment[BUFFER_STENCIL];
+         test_attachment_completeness(ctx, GL_STENCIL, att);
+         if (!att->Complete) {
+            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
+            fbo_incomplete("stencil attachment incomplete", -1);
+            return;
+         }
+      }
+      else {
+         att = &fb->Attachment[BUFFER_COLOR0 + i];
+         test_attachment_completeness(ctx, GL_COLOR, att);
+         if (!att->Complete) {
+            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
+            fbo_incomplete("color attachment incomplete", i);
+            return;
+         }
+      }
+
+      /* get width, height, format of the renderbuffer/texture
+       */
+      if (att->Type == GL_TEXTURE) {
+         const struct gl_texture_image *texImg
+            = att->Texture->Image[att->CubeMapFace][att->TextureLevel];
+         minWidth = MIN2(minWidth, texImg->Width);
+         maxWidth = MAX2(maxWidth, texImg->Width);
+         minHeight = MIN2(minHeight, texImg->Height);
+         maxHeight = MAX2(maxHeight, texImg->Height);
+         f = texImg->_BaseFormat;
+         attFormat = texImg->TexFormat;
+         numImages++;
+         if (!_mesa_is_legal_color_format(ctx, f) &&
+             !is_legal_depth_format(ctx, f)) {
+            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
+            fbo_incomplete("texture attachment incomplete", -1);
+            return;
+         }
+      }
+      else if (att->Type == GL_RENDERBUFFER_EXT) {
+         minWidth = MIN2(minWidth, att->Renderbuffer->Width);
+         maxWidth = MAX2(minWidth, att->Renderbuffer->Width);
+         minHeight = MIN2(minHeight, att->Renderbuffer->Height);
+         maxHeight = MAX2(minHeight, att->Renderbuffer->Height);
+         f = att->Renderbuffer->InternalFormat;
+         attFormat = att->Renderbuffer->Format;
+         numImages++;
+      }
+      else {
+         assert(att->Type == GL_NONE);
+         continue;
+      }
+
+      if (numSamples < 0) {
+         /* first buffer */
+         numSamples = att->Renderbuffer->NumSamples;
+      }
+
+      /* check if integer color */
+      fb->_IntegerColor = _mesa_is_format_integer_color(attFormat);
+
+      /* Error-check width, height, format, samples
+       */
+      if (numImages == 1) {
+         /* save format, num samples */
+         if (i >= 0) {
+            intFormat = f;
+         }
+      }
+      else {
+         if (!ctx->Extensions.ARB_framebuffer_object) {
+            /* check that width, height, format are same */
+            if (minWidth != maxWidth || minHeight != maxHeight) {
+               fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;
+               fbo_incomplete("width or height mismatch", -1);
+               return;
+            }
+            /* check that all color buffer have same format */
+            if (intFormat != GL_NONE && f != intFormat) {
+               fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
+               fbo_incomplete("format mismatch", -1);
+               return;
+            }
+         }
+         if (att->Renderbuffer &&
+             att->Renderbuffer->NumSamples != numSamples) {
+            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;
+            fbo_incomplete("inconsistant number of samples", i);
+            return;
+         }            
+
+      }
+   }
+
+#if FEATURE_GL
+   if (ctx->API == API_OPENGL) {
+      /* Check that all DrawBuffers are present */
+      for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
+	 if (fb->ColorDrawBuffer[j] != GL_NONE) {
+	    const struct gl_renderbuffer_attachment *att
+	       = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
+	    assert(att);
+	    if (att->Type == GL_NONE) {
+	       fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
+	       fbo_incomplete("missing drawbuffer", j);
+	       return;
+	    }
+	 }
+      }
+
+      /* Check that the ReadBuffer is present */
+      if (fb->ColorReadBuffer != GL_NONE) {
+	 const struct gl_renderbuffer_attachment *att
+	    = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);
+	 assert(att);
+	 if (att->Type == GL_NONE) {
+	    fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
+            fbo_incomplete("missing readbuffer", -1);
+	    return;
+	 }
+      }
+   }
+#else
+   (void) j;
+#endif
+
+   if (numImages == 0) {
+      fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
+      fbo_incomplete("no attachments", -1);
+      return;
+   }
+
+   /* Provisionally set status = COMPLETE ... */
+   fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
+
+   /* ... but the driver may say the FB is incomplete.
+    * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
+    * if anything.
+    */
+   if (ctx->Driver.ValidateFramebuffer) {
+      ctx->Driver.ValidateFramebuffer(ctx, fb);
+      if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+         fbo_incomplete("driver marked FBO as incomplete", -1);
+      }
+   }
+
+   if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {
+      /*
+       * Note that if ARB_framebuffer_object is supported and the attached
+       * renderbuffers/textures are different sizes, the framebuffer
+       * width/height will be set to the smallest width/height.
+       */
+      fb->Width = minWidth;
+      fb->Height = minHeight;
+
+      /* finally, update the visual info for the framebuffer */
+      _mesa_update_framebuffer_visual(ctx, fb);
+   }
+}
+
+
+GLboolean GLAPIENTRY
+_mesa_IsRenderbufferEXT(GLuint renderbuffer)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+   if (renderbuffer) {
+      struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
+      if (rb != NULL && rb != &DummyRenderbuffer)
+         return GL_TRUE;
+   }
+   return GL_FALSE;
+}
+
+
+void GLAPIENTRY
+_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
+{
+   struct gl_renderbuffer *newRb;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (target != GL_RENDERBUFFER_EXT) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");
+      return;
+   }
+
+   /* No need to flush here since the render buffer binding has no
+    * effect on rendering state.
+    */
+
+   if (renderbuffer) {
+      newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
+      if (newRb == &DummyRenderbuffer) {
+         /* ID was reserved, but no real renderbuffer object made yet */
+         newRb = NULL;
+      }
+      else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {
+         /* All RB IDs must be Gen'd */
+         _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");
+         return;
+      }
+
+      if (!newRb) {
+	 /* create new renderbuffer object */
+	 newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
+	 if (!newRb) {
+	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
+	    return;
+	 }
+         ASSERT(newRb->AllocStorage);
+         _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
+         newRb->RefCount = 1; /* referenced by hash table */
+      }
+   }
+   else {
+      newRb = NULL;
+   }
+
+   ASSERT(newRb != &DummyRenderbuffer);
+
+   _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
+}
+
+
+/**
+ * If the given renderbuffer is anywhere attached to the framebuffer, detach
+ * the renderbuffer.
+ * This is used when a renderbuffer object is deleted.
+ * The spec calls for unbinding.
+ */
+static void
+detach_renderbuffer(struct gl_context *ctx,
+                    struct gl_framebuffer *fb,
+                    struct gl_renderbuffer *rb)
+{
+   GLuint i;
+   for (i = 0; i < BUFFER_COUNT; i++) {
+      if (fb->Attachment[i].Renderbuffer == rb) {
+         _mesa_remove_attachment(ctx, &fb->Attachment[i]);
+      }
+   }
+   invalidate_framebuffer(fb);
+}
+
+
+void GLAPIENTRY
+_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
+{
+   GLint i;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   for (i = 0; i < n; i++) {
+      if (renderbuffers[i] > 0) {
+	 struct gl_renderbuffer *rb;
+	 rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);
+	 if (rb) {
+            /* check if deleting currently bound renderbuffer object */
+            if (rb == ctx->CurrentRenderbuffer) {
+               /* bind default */
+               ASSERT(rb->RefCount >= 2);
+               _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
+            }
+
+            if (ctx->DrawBuffer->Name) {
+               detach_renderbuffer(ctx, ctx->DrawBuffer, rb);
+            }
+            if (ctx->ReadBuffer->Name && ctx->ReadBuffer != ctx->DrawBuffer) {
+               detach_renderbuffer(ctx, ctx->ReadBuffer, rb);
+            }
+
+	    /* Remove from hash table immediately, to free the ID.
+             * But the object will not be freed until it's no longer
+             * referenced anywhere else.
+             */
+	    _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
+
+            if (rb != &DummyRenderbuffer) {
+               /* no longer referenced by hash table */
+               _mesa_reference_renderbuffer(&rb, NULL);
+	    }
+	 }
+      }
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLuint first;
+   GLint i;
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (n < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
+      return;
+   }
+
+   if (!renderbuffers)
+      return;
+
+   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
+
+   for (i = 0; i < n; i++) {
+      GLuint name = first + i;
+      renderbuffers[i] = name;
+      /* insert dummy placeholder into hash table */
+      _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+      _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
+      _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+   }
+}
+
+
+/**
+ * Given an internal format token for a render buffer, return the
+ * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
+ * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
+ * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
+ *
+ * This is similar to _mesa_base_tex_format() but the set of valid
+ * internal formats is different.
+ *
+ * Note that even if a format is determined to be legal here, validation
+ * of the FBO may fail if the format is not supported by the driver/GPU.
+ *
+ * \param internalFormat  as passed to glRenderbufferStorage()
+ * \return the base internal format, or 0 if internalFormat is illegal
+ */
+GLenum
+_mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
+{
+   /*
+    * Notes: some formats such as alpha, luminance, etc. were added
+    * with GL_ARB_framebuffer_object.
+    */
+   switch (internalFormat) {
+   case GL_ALPHA:
+   case GL_ALPHA4:
+   case GL_ALPHA8:
+   case GL_ALPHA12:
+   case GL_ALPHA16:
+      return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
+   case GL_LUMINANCE:
+   case GL_LUMINANCE4:
+   case GL_LUMINANCE8:
+   case GL_LUMINANCE12:
+   case GL_LUMINANCE16:
+      return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
+   case GL_LUMINANCE_ALPHA:
+   case GL_LUMINANCE4_ALPHA4:
+   case GL_LUMINANCE6_ALPHA2:
+   case GL_LUMINANCE8_ALPHA8:
+   case GL_LUMINANCE12_ALPHA4:
+   case GL_LUMINANCE12_ALPHA12:
+   case GL_LUMINANCE16_ALPHA16:
+      return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
+   case GL_INTENSITY:
+   case GL_INTENSITY4:
+   case GL_INTENSITY8:
+   case GL_INTENSITY12:
+   case GL_INTENSITY16:
+      return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
+   case GL_RGB:
+   case GL_R3_G3_B2:
+   case GL_RGB4:
+   case GL_RGB5:
+   case GL_RGB8:
+   case GL_RGB10:
+   case GL_RGB12:
+   case GL_RGB16:
+   case GL_SRGB8_EXT:
+      return GL_RGB;
+   case GL_RGBA:
+   case GL_RGBA2:
+   case GL_RGBA4:
+   case GL_RGB5_A1:
+   case GL_RGBA8:
+   case GL_RGB10_A2:
+   case GL_RGBA12:
+   case GL_RGBA16:
+   case GL_RGBA16_SNORM:
+   case GL_SRGB8_ALPHA8_EXT:
+      return GL_RGBA;
+   case GL_STENCIL_INDEX:
+   case GL_STENCIL_INDEX1_EXT:
+   case GL_STENCIL_INDEX4_EXT:
+   case GL_STENCIL_INDEX8_EXT:
+   case GL_STENCIL_INDEX16_EXT:
+      return GL_STENCIL_INDEX;
+   case GL_DEPTH_COMPONENT:
+   case GL_DEPTH_COMPONENT16:
+   case GL_DEPTH_COMPONENT24:
+   case GL_DEPTH_COMPONENT32:
+      return GL_DEPTH_COMPONENT;
+   case GL_DEPTH_STENCIL_EXT:
+   case GL_DEPTH24_STENCIL8_EXT:
+      if (ctx->Extensions.EXT_packed_depth_stencil)
+         return GL_DEPTH_STENCIL_EXT;
+      else
+         return 0;
+   case GL_RED:
+   case GL_R8:
+   case GL_R16:
+      return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;
+   case GL_RG:
+   case GL_RG8:
+   case GL_RG16:
+      return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;
+   /* XXX add floating point and integer formats eventually */
+   default:
+      return 0;
+   }
+}
+
+
+/** sentinal value, see below */
+#define NO_SAMPLES 1000
+
+
+/**
+ * Helper function used by _mesa_RenderbufferStorageEXT() and 
+ * _mesa_RenderbufferStorageMultisample().
+ * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
+ */
+static void
+renderbuffer_storage(GLenum target, GLenum internalFormat,
+                     GLsizei width, GLsizei height, GLsizei samples)
+{
+   const char *func = samples == NO_SAMPLES ?
+      "glRenderbufferStorage" : "RenderbufferStorageMultisample";
+   struct gl_renderbuffer *rb;
+   GLenum baseFormat;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (target != GL_RENDERBUFFER_EXT) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
+      return;
+   }
+
+   baseFormat = _mesa_base_fbo_format(ctx, internalFormat);
+   if (baseFormat == 0) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);
+      return;
+   }
+
+   if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);
+      return;
+   }
+
+   if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);
+      return;
+   }
+
+   if (samples == NO_SAMPLES) {
+      /* NumSamples == 0 indicates non-multisampling */
+      samples = 0;
+   }
+   else if (samples > (GLsizei) ctx->Const.MaxSamples) {
+      /* note: driver may choose to use more samples than what's requested */
+      _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);
+      return;
+   }
+
+   rb = ctx->CurrentRenderbuffer;
+   if (!rb) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);
+      return;
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   if (rb->InternalFormat == internalFormat &&
+       rb->Width == (GLuint) width &&
+       rb->Height == (GLuint) height) {
+      /* no change in allocation needed */
+      return;
+   }
+
+   /* These MUST get set by the AllocStorage func */
+   rb->Format = MESA_FORMAT_NONE;
+   rb->NumSamples = samples;
+
+   /* Now allocate the storage */
+   ASSERT(rb->AllocStorage);
+   if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {
+      /* No error - check/set fields now */
+      assert(rb->Format != MESA_FORMAT_NONE);
+      assert(rb->Width == (GLuint) width);
+      assert(rb->Height == (GLuint) height);
+      rb->InternalFormat = internalFormat;
+      rb->_BaseFormat = baseFormat;
+      assert(rb->_BaseFormat != 0);
+   }
+   else {
+      /* Probably ran out of memory - clear the fields */
+      rb->Width = 0;
+      rb->Height = 0;
+      rb->Format = MESA_FORMAT_NONE;
+      rb->InternalFormat = GL_NONE;
+      rb->_BaseFormat = GL_NONE;
+      rb->NumSamples = 0;
+   }
+
+   /*
+   test_framebuffer_completeness(ctx, fb);
+   */
+   /* XXX if this renderbuffer is attached anywhere, invalidate attachment
+    * points???
+    */
+}
+
+
+#if FEATURE_OES_EGL_image
+void GLAPIENTRY
+_mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
+{
+   struct gl_renderbuffer *rb;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (!ctx->Extensions.OES_EGL_image) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glEGLImageTargetRenderbufferStorageOES(unsupported)");
+      return;
+   }
+
+   if (target != GL_RENDERBUFFER) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "EGLImageTargetRenderbufferStorageOES");
+      return;
+   }
+
+   rb = ctx->CurrentRenderbuffer;
+   if (!rb) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "EGLImageTargetRenderbufferStorageOES");
+      return;
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image);
+}
+#endif
+
+
+/**
+ * Helper function for _mesa_GetRenderbufferParameterivEXT() and
+ * _mesa_GetFramebufferAttachmentParameterivEXT()
+ * We have to be careful to respect the base format.  For example, if a
+ * renderbuffer/texture was created with internalFormat=GL_RGB but the
+ * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
+ * we need to return zero.
+ */
+static GLint
+get_component_bits(GLenum pname, GLenum baseFormat, gl_format format)
+{
+   switch (pname) {
+   case GL_RENDERBUFFER_RED_SIZE_EXT:
+   case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
+      if (baseFormat == GL_RGB || baseFormat == GL_RGBA ||
+	  baseFormat == GL_RG || baseFormat == GL_RED)
+         return _mesa_get_format_bits(format, pname);
+      else
+         return 0;
+   case GL_RENDERBUFFER_GREEN_SIZE_EXT:
+   case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
+      if (baseFormat == GL_RGB || baseFormat == GL_RGBA || baseFormat == GL_RG)
+         return _mesa_get_format_bits(format, pname);
+      else
+         return 0;
+   case GL_RENDERBUFFER_BLUE_SIZE_EXT:
+   case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
+      if (baseFormat == GL_RGB || baseFormat == GL_RGBA)
+         return _mesa_get_format_bits(format, pname);
+      else
+         return 0;
+   case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
+   case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
+      if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA ||
+	  baseFormat == GL_LUMINANCE_ALPHA)
+         return _mesa_get_format_bits(format, pname);
+      else
+         return 0;
+   case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
+   case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
+      if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL)
+         return _mesa_get_format_bits(format, pname);
+      else
+         return 0;
+   case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
+   case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
+      if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL)
+         return _mesa_get_format_bits(format, pname);
+      else
+         return 0;
+   default:
+      return 0;
+   }
+}
+
+
+
+void GLAPIENTRY
+_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
+                             GLsizei width, GLsizei height)
+{
+   /* GL_ARB_fbo says calling this function is equivalent to calling
+    * glRenderbufferStorageMultisample() with samples=0.  We pass in
+    * a token value here just for error reporting purposes.
+    */
+   renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES);
+}
+
+
+void GLAPIENTRY
+_mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples,
+                                     GLenum internalFormat,
+                                     GLsizei width, GLsizei height)
+{
+   renderbuffer_storage(target, internalFormat, width, height, samples);
+}
+
+
+/**
+ * OpenGL ES version of glRenderBufferStorage.
+ */
+void GLAPIENTRY
+_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
+			   GLsizei width, GLsizei height)
+{
+   switch (internalFormat) {
+   case GL_RGB565:
+      /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
+      /* choose a closest format */
+      internalFormat = GL_RGB5;
+      break;
+   default:
+      break;
+   }
+
+   renderbuffer_storage(target, internalFormat, width, height, 0);
+}
+
+
+void GLAPIENTRY
+_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
+{
+   struct gl_renderbuffer *rb;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (target != GL_RENDERBUFFER_EXT) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetRenderbufferParameterivEXT(target)");
+      return;
+   }
+
+   rb = ctx->CurrentRenderbuffer;
+   if (!rb) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glGetRenderbufferParameterivEXT");
+      return;
+   }
+
+   /* No need to flush here since we're just quering state which is
+    * not effected by rendering.
+    */
+
+   switch (pname) {
+   case GL_RENDERBUFFER_WIDTH_EXT:
+      *params = rb->Width;
+      return;
+   case GL_RENDERBUFFER_HEIGHT_EXT:
+      *params = rb->Height;
+      return;
+   case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
+      *params = rb->InternalFormat;
+      return;
+   case GL_RENDERBUFFER_RED_SIZE_EXT:
+   case GL_RENDERBUFFER_GREEN_SIZE_EXT:
+   case GL_RENDERBUFFER_BLUE_SIZE_EXT:
+   case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
+   case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
+   case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
+      *params = get_component_bits(pname, rb->_BaseFormat, rb->Format);
+      break;
+   case GL_RENDERBUFFER_SAMPLES:
+      if (ctx->Extensions.ARB_framebuffer_object) {
+         *params = rb->NumSamples;
+         break;
+      }
+      /* fallthrough */
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetRenderbufferParameterivEXT(target)");
+      return;
+   }
+}
+
+
+GLboolean GLAPIENTRY
+_mesa_IsFramebufferEXT(GLuint framebuffer)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+   if (framebuffer) {
+      struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);
+      if (rb != NULL && rb != &DummyFramebuffer)
+         return GL_TRUE;
+   }
+   return GL_FALSE;
+}
+
+
+/**
+ * Check if any of the attachments of the given framebuffer are textures
+ * (render to texture).  Call ctx->Driver.RenderTexture() for such
+ * attachments.
+ */
+static void
+check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+   GLuint i;
+   ASSERT(ctx->Driver.RenderTexture);
+
+   if (fb->Name == 0)
+      return; /* can't render to texture with winsys framebuffers */
+
+   for (i = 0; i < BUFFER_COUNT; i++) {
+      struct gl_renderbuffer_attachment *att = fb->Attachment + i;
+      struct gl_texture_object *texObj = att->Texture;
+      if (texObj
+          && texObj->Image[att->CubeMapFace][att->TextureLevel]) {
+         ctx->Driver.RenderTexture(ctx, fb, att);
+      }
+   }
+}
+
+
+/**
+ * Examine all the framebuffer's attachments to see if any are textures.
+ * If so, call ctx->Driver.FinishRenderTexture() for each texture to
+ * notify the device driver that the texture image may have changed.
+ */
+static void
+check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+   if (fb->Name == 0)
+      return; /* can't render to texture with winsys framebuffers */
+
+   if (ctx->Driver.FinishRenderTexture) {
+      GLuint i;
+      for (i = 0; i < BUFFER_COUNT; i++) {
+         struct gl_renderbuffer_attachment *att = fb->Attachment + i;
+         if (att->Texture && att->Renderbuffer) {
+            ctx->Driver.FinishRenderTexture(ctx, att);
+         }
+      }
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
+{
+   struct gl_framebuffer *newDrawFb, *newReadFb;
+   struct gl_framebuffer *oldDrawFb, *oldReadFb;
+   GLboolean bindReadBuf, bindDrawBuf;
+   GET_CURRENT_CONTEXT(ctx);
+
+#ifdef DEBUG
+   if (ctx->Extensions.ARB_framebuffer_object) {
+      ASSERT(ctx->Extensions.EXT_framebuffer_object);
+      ASSERT(ctx->Extensions.EXT_framebuffer_blit);
+   }
+#endif
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (!ctx->Extensions.EXT_framebuffer_object) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBindFramebufferEXT(unsupported)");
+      return;
+   }
+
+   switch (target) {
+#if FEATURE_EXT_framebuffer_blit
+   case GL_DRAW_FRAMEBUFFER_EXT:
+      if (!ctx->Extensions.EXT_framebuffer_blit) {
+         _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
+         return;
+      }
+      bindDrawBuf = GL_TRUE;
+      bindReadBuf = GL_FALSE;
+      break;
+   case GL_READ_FRAMEBUFFER_EXT:
+      if (!ctx->Extensions.EXT_framebuffer_blit) {
+         _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
+         return;
+      }
+      bindDrawBuf = GL_FALSE;
+      bindReadBuf = GL_TRUE;
+      break;
+#endif
+   case GL_FRAMEBUFFER_EXT:
+      bindDrawBuf = GL_TRUE;
+      bindReadBuf = GL_TRUE;
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
+      return;
+   }
+
+   if (framebuffer) {
+      /* Binding a user-created framebuffer object */
+      newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);
+      if (newDrawFb == &DummyFramebuffer) {
+         /* ID was reserved, but no real framebuffer object made yet */
+         newDrawFb = NULL;
+      }
+      else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {
+         /* All FBO IDs must be Gen'd */
+         _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");
+         return;
+      }
+
+      if (!newDrawFb) {
+	 /* create new framebuffer object */
+	 newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
+	 if (!newDrawFb) {
+	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
+	    return;
+	 }
+         _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);
+      }
+      newReadFb = newDrawFb;
+   }
+   else {
+      /* Binding the window system framebuffer (which was originally set
+       * with MakeCurrent).
+       */
+      newDrawFb = ctx->WinSysDrawBuffer;
+      newReadFb = ctx->WinSysReadBuffer;
+   }
+
+   ASSERT(newDrawFb);
+   ASSERT(newDrawFb != &DummyFramebuffer);
+
+   /* save pointers to current/old framebuffers */
+   oldDrawFb = ctx->DrawBuffer;
+   oldReadFb = ctx->ReadBuffer;
+
+   /* check if really changing bindings */
+   if (oldDrawFb == newDrawFb)
+      bindDrawBuf = GL_FALSE;
+   if (oldReadFb == newReadFb)
+      bindReadBuf = GL_FALSE;
+
+   /*
+    * OK, now bind the new Draw/Read framebuffers, if they're changing.
+    *
+    * We also check if we're beginning and/or ending render-to-texture.
+    * When a framebuffer with texture attachments is unbound, call
+    * ctx->Driver.FinishRenderTexture().
+    * When a framebuffer with texture attachments is bound, call
+    * ctx->Driver.RenderTexture().
+    *
+    * Note that if the ReadBuffer has texture attachments we don't consider
+    * that a render-to-texture case.
+    */
+   if (bindReadBuf) {
+      FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+      /* check if old readbuffer was render-to-texture */
+      check_end_texture_render(ctx, oldReadFb);
+
+      _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);
+   }
+
+   if (bindDrawBuf) {
+      FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+      /* check if old read/draw buffers were render-to-texture */
+      if (!bindReadBuf)
+         check_end_texture_render(ctx, oldReadFb);
+
+      if (oldDrawFb != oldReadFb)
+         check_end_texture_render(ctx, oldDrawFb);
+
+      /* check if newly bound framebuffer has any texture attachments */
+      check_begin_texture_render(ctx, newDrawFb);
+
+      _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);
+   }
+
+   if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {
+      ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
+{
+   GLint i;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   for (i = 0; i < n; i++) {
+      if (framebuffers[i] > 0) {
+	 struct gl_framebuffer *fb;
+	 fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);
+	 if (fb) {
+            ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
+
+            /* check if deleting currently bound framebuffer object */
+            if (ctx->Extensions.EXT_framebuffer_blit) {
+               /* separate draw/read binding points */
+               if (fb == ctx->DrawBuffer) {
+                  /* bind default */
+                  ASSERT(fb->RefCount >= 2);
+                  _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
+               }
+               if (fb == ctx->ReadBuffer) {
+                  /* bind default */
+                  ASSERT(fb->RefCount >= 2);
+                  _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
+               }
+            }
+            else {
+               /* only one binding point for read/draw buffers */
+               if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {
+                  /* bind default */
+                  ASSERT(fb->RefCount >= 2);
+                  _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+               }    
+            }
+
+	    /* remove from hash table immediately, to free the ID */
+	    _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
+
+            if (fb != &DummyFramebuffer) {
+               /* But the object will not be freed until it's no longer
+                * bound in any context.
+                */
+               _mesa_reference_framebuffer(&fb, NULL);
+	    }
+	 }
+      }
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLuint first;
+   GLint i;
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (n < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
+      return;
+   }
+
+   if (!framebuffers)
+      return;
+
+   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
+
+   for (i = 0; i < n; i++) {
+      GLuint name = first + i;
+      framebuffers[i] = name;
+      /* insert dummy placeholder into hash table */
+      _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+      _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);
+      _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+   }
+}
+
+
+
+GLenum GLAPIENTRY
+_mesa_CheckFramebufferStatusEXT(GLenum target)
+{
+   struct gl_framebuffer *buffer;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
+
+   buffer = get_framebuffer_target(ctx, target);
+   if (!buffer) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
+      return 0;
+   }
+
+   if (buffer->Name == 0) {
+      /* The window system / default framebuffer is always complete */
+      return GL_FRAMEBUFFER_COMPLETE_EXT;
+   }
+
+   /* No need to flush here */
+
+   if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {
+      _mesa_test_framebuffer_completeness(ctx, buffer);
+   }
+
+   return buffer->_Status;
+}
+
+
+
+/**
+ * Common code called by glFramebufferTexture1D/2D/3DEXT().
+ */
+static void
+framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target, 
+                    GLenum attachment, GLenum textarget, GLuint texture,
+                    GLint level, GLint zoffset)
+{
+   struct gl_renderbuffer_attachment *att;
+   struct gl_texture_object *texObj = NULL;
+   struct gl_framebuffer *fb;
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   fb = get_framebuffer_target(ctx, target);
+   if (!fb) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glFramebufferTexture%sEXT(target=0x%x)", caller, target);
+      return;
+   }
+
+   /* check framebuffer binding */
+   if (fb->Name == 0) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glFramebufferTexture%sEXT", caller);
+      return;
+   }
+
+
+   /* The textarget, level, and zoffset parameters are only validated if
+    * texture is non-zero.
+    */
+   if (texture) {
+      GLboolean err = GL_TRUE;
+
+      texObj = _mesa_lookup_texture(ctx, texture);
+      if (texObj != NULL) {
+         if (textarget == 0) {
+            /* XXX what's the purpose of this? */
+            err = (texObj->Target != GL_TEXTURE_3D) &&
+                (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&
+                (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
+         }
+         else {
+            err = (texObj->Target == GL_TEXTURE_CUBE_MAP)
+                ? !IS_CUBE_FACE(textarget)
+                : (texObj->Target != textarget);
+         }
+      }
+      else {
+         /* can't render to a non-existant texture */
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glFramebufferTexture%sEXT(non existant texture)",
+                     caller);
+         return;
+      }
+
+      if (err) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glFramebufferTexture%sEXT(texture target mismatch)",
+                     caller);
+         return;
+      }
+
+      if (texObj->Target == GL_TEXTURE_3D) {
+         const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
+         if (zoffset < 0 || zoffset >= maxSize) {
+            _mesa_error(ctx, GL_INVALID_VALUE,
+                        "glFramebufferTexture%sEXT(zoffset)", caller);
+            return;
+         }
+      }
+      else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||
+               (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
+         if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {
+            _mesa_error(ctx, GL_INVALID_VALUE,
+                        "glFramebufferTexture%sEXT(layer)", caller);
+            return;
+         }
+      }
+
+      if ((level < 0) || 
+          (level >= _mesa_max_texture_levels(ctx, texObj->Target))) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glFramebufferTexture%sEXT(level)", caller);
+         return;
+      }
+   }
+
+   att = _mesa_get_attachment(ctx, fb, attachment);
+   if (att == NULL) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glFramebufferTexture%sEXT(attachment)", caller);
+      return;
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   _glthread_LOCK_MUTEX(fb->Mutex);
+   if (texObj) {
+      _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,
+                                   level, zoffset);
+      /* Set the render-to-texture flag.  We'll check this flag in
+       * glTexImage() and friends to determine if we need to revalidate
+       * any FBOs that might be rendering into this texture.
+       * This flag never gets cleared since it's non-trivial to determine
+       * when all FBOs might be done rendering to this texture.  That's OK
+       * though since it's uncommon to render to a texture then repeatedly
+       * call glTexImage() to change images in the texture.
+       */
+      texObj->_RenderToTexture = GL_TRUE;
+   }
+   else {
+      _mesa_remove_attachment(ctx, att);
+   }
+
+   invalidate_framebuffer(fb);
+
+   _glthread_UNLOCK_MUTEX(fb->Mutex);
+}
+
+
+
+void GLAPIENTRY
+_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
+                              GLenum textarget, GLuint texture, GLint level)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if ((texture != 0) && (textarget != GL_TEXTURE_1D)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glFramebufferTexture1DEXT(textarget)");
+      return;
+   }
+
+   framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,
+                       level, 0);
+}
+
+
+void GLAPIENTRY
+_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
+                              GLenum textarget, GLuint texture, GLint level)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if ((texture != 0) &&
+       (textarget != GL_TEXTURE_2D) &&
+       (textarget != GL_TEXTURE_RECTANGLE_ARB) &&
+       (!IS_CUBE_FACE(textarget))) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glFramebufferTexture2DEXT(textarget=0x%x)", textarget);
+      return;
+   }
+
+   framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,
+                       level, 0);
+}
+
+
+void GLAPIENTRY
+_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
+                              GLenum textarget, GLuint texture,
+                              GLint level, GLint zoffset)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glFramebufferTexture3DEXT(textarget)");
+      return;
+   }
+
+   framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,
+                       level, zoffset);
+}
+
+
+void GLAPIENTRY
+_mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,
+                                 GLuint texture, GLint level, GLint layer)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,
+                       level, layer);
+}
+
+
+void GLAPIENTRY
+_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
+                                 GLenum renderbufferTarget,
+                                 GLuint renderbuffer)
+{
+   struct gl_renderbuffer_attachment *att;
+   struct gl_framebuffer *fb;
+   struct gl_renderbuffer *rb;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   fb = get_framebuffer_target(ctx, target);
+   if (!fb) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)");
+      return;
+   }
+
+   if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glFramebufferRenderbufferEXT(renderbufferTarget)");
+      return;
+   }
+
+   if (fb->Name == 0) {
+      /* Can't attach new renderbuffers to a window system framebuffer */
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
+      return;
+   }
+
+   att = _mesa_get_attachment(ctx, fb, attachment);
+   if (att == NULL) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glFramebufferRenderbufferEXT(invalid attachment %s)",
+                  _mesa_lookup_enum_by_nr(attachment));
+      return;
+   }
+
+   if (renderbuffer) {
+      rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
+      if (!rb) {
+	 _mesa_error(ctx, GL_INVALID_OPERATION,
+		     "glFramebufferRenderbufferEXT(non-existant"
+                     " renderbuffer %u)", renderbuffer);
+	 return;
+      }
+      else if (rb == &DummyRenderbuffer) {
+         /* This is what NVIDIA does */
+	 _mesa_error(ctx, GL_INVALID_VALUE,
+		     "glFramebufferRenderbufferEXT(renderbuffer %u)",
+                     renderbuffer);
+	 return;
+      }
+   }
+   else {
+      /* remove renderbuffer attachment */
+      rb = NULL;
+   }
+
+   if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&
+       rb && rb->Format != MESA_FORMAT_NONE) {
+      /* make sure the renderbuffer is a depth/stencil format */
+      const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
+      if (baseFormat != GL_DEPTH_STENCIL) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glFramebufferRenderbufferEXT(renderbuffer"
+                     " is not DEPTH_STENCIL format)");
+         return;
+      }
+   }
+
+
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   assert(ctx->Driver.FramebufferRenderbuffer);
+   ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);
+
+   /* Some subsequent GL commands may depend on the framebuffer's visual
+    * after the binding is updated.  Update visual info now.
+    */
+   _mesa_update_framebuffer_visual(ctx, fb);
+}
+
+
+void GLAPIENTRY
+_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
+                                             GLenum pname, GLint *params)
+{
+   const struct gl_renderbuffer_attachment *att;
+   struct gl_framebuffer *buffer;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   buffer = get_framebuffer_target(ctx, target);
+   if (!buffer) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetFramebufferAttachmentParameterivEXT(target)");
+      return;
+   }
+
+   if (buffer->Name == 0) {
+      /* the default / window-system FBO */
+      att = _mesa_get_fb0_attachment(ctx, buffer, attachment);
+   }
+   else {
+      /* user-created framebuffer FBO */
+      att = _mesa_get_attachment(ctx, buffer, attachment);
+   }
+
+   if (att == NULL) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetFramebufferAttachmentParameterivEXT(attachment)");
+      return;
+   }
+
+   if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
+      /* the depth and stencil attachments must point to the same buffer */
+      const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;
+      depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);
+      stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);
+      if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
+                     " attachments differ)");
+         return;
+      }
+   }
+
+   /* No need to flush here */
+
+   switch (pname) {
+   case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
+      *params = buffer->Name == 0 ? GL_FRAMEBUFFER_DEFAULT : att->Type;
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
+      if (att->Type == GL_RENDERBUFFER_EXT) {
+	 *params = att->Renderbuffer->Name;
+      }
+      else if (att->Type == GL_TEXTURE) {
+	 *params = att->Texture->Name;
+      }
+      else {
+         assert(att->Type == GL_NONE);
+         *params = 0;
+      }
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
+      if (att->Type == GL_TEXTURE) {
+	 *params = att->TextureLevel;
+      }
+      else {
+	 _mesa_error(ctx, GL_INVALID_ENUM,
+		     "glGetFramebufferAttachmentParameterivEXT(pname)");
+      }
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
+      if (att->Type == GL_TEXTURE) {
+         if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {
+            *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
+         }
+         else {
+            *params = 0;
+         }
+      }
+      else {
+	 _mesa_error(ctx, GL_INVALID_ENUM,
+		     "glGetFramebufferAttachmentParameterivEXT(pname)");
+      }
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
+      if (att->Type == GL_TEXTURE) {
+         if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {
+            *params = att->Zoffset;
+         }
+         else {
+            *params = 0;
+         }
+      }
+      else {
+	 _mesa_error(ctx, GL_INVALID_ENUM,
+		     "glGetFramebufferAttachmentParameterivEXT(pname)");
+      }
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
+      if (!ctx->Extensions.ARB_framebuffer_object) {
+         _mesa_error(ctx, GL_INVALID_ENUM,
+                     "glGetFramebufferAttachmentParameterivEXT(pname)");
+      }
+      else {
+         if (ctx->Extensions.EXT_framebuffer_sRGB && ctx->Const.sRGBCapable) {
+            *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);
+         }
+         else {
+            /* According to ARB_framebuffer_sRGB, we should return LINEAR
+             * if the sRGB conversion is unsupported. */
+            *params = GL_LINEAR;
+         }
+      }
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
+      if (!ctx->Extensions.ARB_framebuffer_object) {
+         _mesa_error(ctx, GL_INVALID_ENUM,
+                     "glGetFramebufferAttachmentParameterivEXT(pname)");
+         return;
+      }
+      else {
+         gl_format format = att->Renderbuffer->Format;
+         if (format == MESA_FORMAT_CI8 || format == MESA_FORMAT_S8) {
+            /* special cases */
+            *params = GL_INDEX;
+         }
+         else {
+            *params = _mesa_get_format_datatype(format);
+         }
+      }
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
+   case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
+   case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
+   case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
+   case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
+   case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
+      if (!ctx->Extensions.ARB_framebuffer_object) {
+         _mesa_error(ctx, GL_INVALID_ENUM,
+                     "glGetFramebufferAttachmentParameterivEXT(pname)");
+      }
+      else if (att->Texture) {
+         const struct gl_texture_image *texImage =
+            _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,
+                                   att->TextureLevel);
+         if (texImage) {
+            *params = get_component_bits(pname, texImage->_BaseFormat,
+                                         texImage->TexFormat);
+         }
+         else {
+            *params = 0;
+         }
+      }
+      else if (att->Renderbuffer) {
+         *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,
+                                      att->Renderbuffer->Format);
+      }
+      else {
+         *params = 0;
+      }
+      return;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetFramebufferAttachmentParameterivEXT(pname)");
+      return;
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_GenerateMipmapEXT(GLenum target)
+{
+   struct gl_texture_object *texObj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   switch (target) {
+   case GL_TEXTURE_1D:
+   case GL_TEXTURE_2D:
+   case GL_TEXTURE_3D:
+   case GL_TEXTURE_CUBE_MAP:
+      /* OK, legal value */
+      break;
+   default:
+      /* XXX need to implement GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY */
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)");
+      return;
+   }
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+
+   if (texObj->BaseLevel >= texObj->MaxLevel) {
+      /* nothing to do */
+      return;
+   }
+
+   if (texObj->Target == GL_TEXTURE_CUBE_MAP &&
+       !_mesa_cube_complete(texObj)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glGenerateMipmap(incomplete cube map)");
+      return;
+   }
+
+   _mesa_lock_texture(ctx, texObj);
+   if (target == GL_TEXTURE_CUBE_MAP) {
+      GLuint face;
+      for (face = 0; face < 6; face++)
+	 ctx->Driver.GenerateMipmap(ctx,
+				    GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,
+				    texObj);
+   }
+   else {
+      ctx->Driver.GenerateMipmap(ctx, target, texObj);
+   }
+   _mesa_unlock_texture(ctx, texObj);
+}
+
+
+#if FEATURE_EXT_framebuffer_blit
+
+static const struct gl_renderbuffer_attachment *
+find_attachment(const struct gl_framebuffer *fb,
+                const struct gl_renderbuffer *rb)
+{
+   GLuint i;
+   for (i = 0; i < Elements(fb->Attachment); i++) {
+      if (fb->Attachment[i].Renderbuffer == rb)
+         return &fb->Attachment[i];
+   }
+   return NULL;
+}
+
+
+
+/**
+ * Blit rectangular region, optionally from one framebuffer to another.
+ *
+ * Note, if the src buffer is multisampled and the dest is not, this is
+ * when the samples must be resolved to a single color.
+ */
+void GLAPIENTRY
+_mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                         GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                         GLbitfield mask, GLenum filter)
+{
+   const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
+                                     GL_DEPTH_BUFFER_BIT |
+                                     GL_STENCIL_BUFFER_BIT);
+   const struct gl_framebuffer *readFb, *drawFb;
+   const struct gl_renderbuffer *colorReadRb, *colorDrawRb;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx,
+                  "glBlitFramebuffer(%d, %d, %d, %d,  %d, %d, %d, %d, 0x%x, %s)\n",
+                  srcX0, srcY0, srcX1, srcY1,
+                  dstX0, dstY0, dstX1, dstY1,
+                  mask, _mesa_lookup_enum_by_nr(filter));
+
+   if (ctx->NewState) {
+      _mesa_update_state(ctx);
+   }
+
+   readFb = ctx->ReadBuffer;
+   drawFb = ctx->DrawBuffer;
+
+   if (!readFb || !drawFb) {
+      /* This will normally never happen but someday we may want to
+       * support MakeCurrent() with no drawables.
+       */
+      return;
+   }
+
+   /* check for complete framebuffers */
+   if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
+       readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+                  "glBlitFramebufferEXT(incomplete draw/read buffers)");
+      return;
+   }
+
+   if (filter != GL_NEAREST && filter != GL_LINEAR) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");
+      return;
+   }
+
+   if (mask & ~legalMaskBits) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
+      return;
+   }
+
+   /* depth/stencil must be blitted with nearest filtering */
+   if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
+        && filter != GL_NEAREST) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+             "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter");
+      return;
+   }
+
+   /* get color read/draw renderbuffers */
+   if (mask & GL_COLOR_BUFFER_BIT) {
+      colorReadRb = readFb->_ColorReadBuffer;
+      colorDrawRb = drawFb->_ColorDrawBuffers[0];
+   }
+   else {
+      colorReadRb = colorDrawRb = NULL;
+   }
+
+   if (mask & GL_STENCIL_BUFFER_BIT) {
+      struct gl_renderbuffer *readRb = readFb->_StencilBuffer;
+      struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer;
+      if (!readRb ||
+          !drawRb ||
+          _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) != 
+          _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glBlitFramebufferEXT(stencil buffer size mismatch");
+         return;
+      }
+   }
+
+   if (mask & GL_DEPTH_BUFFER_BIT) {
+      struct gl_renderbuffer *readRb = readFb->_DepthBuffer;
+      struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer;
+      if (!readRb ||
+          !drawRb ||
+          _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) != 
+          _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glBlitFramebufferEXT(depth buffer size mismatch");
+         return;
+      }
+   }
+
+   if (readFb->Visual.samples > 0 &&
+       drawFb->Visual.samples > 0 &&
+       readFb->Visual.samples != drawFb->Visual.samples) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBlitFramebufferEXT(mismatched samples");
+      return;
+   }
+
+   /* extra checks for multisample copies... */
+   if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
+      /* src and dest region sizes must be the same */
+      if (srcX1 - srcX0 != dstX1 - dstX0 ||
+          srcY1 - srcY0 != dstY1 - dstY0) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                "glBlitFramebufferEXT(bad src/dst multisample region sizes");
+         return;
+      }
+
+      /* color formats must match */
+      if (colorReadRb &&
+          colorDrawRb &&
+          colorReadRb->Format != colorDrawRb->Format) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                "glBlitFramebufferEXT(bad src/dst multisample pixel formats");
+         return;
+      }
+   }
+
+   if (!ctx->Extensions.EXT_framebuffer_blit) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");
+      return;
+   }
+
+   /* Debug code */
+   if (DEBUG_BLIT) {
+      printf("glBlitFramebuffer(%d, %d, %d, %d,  %d, %d, %d, %d,"
+	     " 0x%x, 0x%x)\n",
+	     srcX0, srcY0, srcX1, srcY1,
+	     dstX0, dstY0, dstX1, dstY1,
+	     mask, filter);
+      if (colorReadRb) {
+         const struct gl_renderbuffer_attachment *att;
+
+         att = find_attachment(readFb, colorReadRb);
+         printf("  Src FBO %u  RB %u (%dx%d)  ",
+		readFb->Name, colorReadRb->Name,
+		colorReadRb->Width, colorReadRb->Height);
+         if (att && att->Texture) {
+            printf("Tex %u  tgt 0x%x  level %u  face %u",
+		   att->Texture->Name,
+		   att->Texture->Target,
+		   att->TextureLevel,
+		   att->CubeMapFace);
+         }
+         printf("\n");
+
+         att = find_attachment(drawFb, colorDrawRb);
+         printf("  Dst FBO %u  RB %u (%dx%d)  ",
+		drawFb->Name, colorDrawRb->Name,
+		colorDrawRb->Width, colorDrawRb->Height);
+         if (att && att->Texture) {
+            printf("Tex %u  tgt 0x%x  level %u  face %u",
+		   att->Texture->Name,
+		   att->Texture->Target,
+		   att->TextureLevel,
+		   att->CubeMapFace);
+         }
+         printf("\n");
+      }
+   }
+
+   ASSERT(ctx->Driver.BlitFramebuffer);
+   ctx->Driver.BlitFramebuffer(ctx,
+                               srcX0, srcY0, srcX1, srcY1,
+                               dstX0, dstY0, dstX1, dstY1,
+                               mask, filter);
+}
+#endif /* FEATURE_EXT_framebuffer_blit */
+
+#if FEATURE_ARB_geometry_shader4
+void GLAPIENTRY
+_mesa_FramebufferTextureARB(GLenum target, GLenum attachment,
+                            GLuint texture, GLint level)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   _mesa_error(ctx, GL_INVALID_OPERATION,
+               "glFramebufferTextureARB "
+               "not implemented!");
+}
+
+void GLAPIENTRY
+_mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,
+                                GLuint texture, GLint level, GLenum face)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   _mesa_error(ctx, GL_INVALID_OPERATION,
+               "glFramebufferTextureFaceARB "
+               "not implemented!");
+}
+#endif /* FEATURE_ARB_geometry_shader4 */
diff --git a/mesalib/src/mesa/main/framebuffer.c b/mesalib/src/mesa/main/framebuffer.c
index 948b3b7b5..227b214a5 100644
--- a/mesalib/src/mesa/main/framebuffer.c
+++ b/mesalib/src/mesa/main/framebuffer.c
@@ -794,15 +794,12 @@ update_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
          _mesa_drawbuffers(ctx, ctx->Const.MaxDrawBuffers,
                            ctx->Color.DrawBuffer, NULL);
       }
-      if (fb->ColorReadBuffer != ctx->Pixel.ReadBuffer) {
-         
-      }
    }
    else {
       /* This is a user-created framebuffer.
        * Completeness only matters for user-created framebuffers.
        */
-      if (fb->_Status != GL_FRAMEBUFFER_COMPLETE) {
+      if (fb->_Status == 0) {
          _mesa_test_framebuffer_completeness(ctx, fb);
       }
    }
diff --git a/mesalib/src/mesa/main/get.c b/mesalib/src/mesa/main/get.c
index 3e5ddfcfd..336304c59 100644
--- a/mesalib/src/mesa/main/get.c
+++ b/mesalib/src/mesa/main/get.c
@@ -1,2533 +1,2527 @@
-/*

- * Copyright (C) 2010  Brian Paul   All Rights Reserved.

- * Copyright (C) 2010  Intel Corporation

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- *

- * Author: Kristian Høgsberg <krh@bitplanet.net>

- */

-

-#include "glheader.h"

-#include "context.h"

-#include "enable.h"

-#include "enums.h"

-#include "extensions.h"

-#include "get.h"

-#include "macros.h"

-#include "mfeatures.h"

-#include "mtypes.h"

-#include "state.h"

-#include "texcompress.h"

-#include "framebuffer.h"

-

-/* This is a table driven implemetation of the glGet*v() functions.

- * The basic idea is that most getters just look up an int somewhere

- * in struct gl_context and then convert it to a bool or float according to

- * which of glGetIntegerv() glGetBooleanv() etc is being called.

- * Instead of generating code to do this, we can just record the enum

- * value and the offset into struct gl_context in an array of structs.  Then

- * in glGet*(), we lookup the struct for the enum in question, and use

- * the offset to get the int we need.

- *

- * Sometimes we need to look up a float, a boolean, a bit in a

- * bitfield, a matrix or other types instead, so we need to track the

- * type of the value in struct gl_context.  And sometimes the value isn't in

- * struct gl_context but in the drawbuffer, the array object, current texture

- * unit, or maybe it's a computed value.  So we need to also track

- * where or how to find the value.  Finally, we sometimes need to

- * check that one of a number of extensions are enabled, the GL

- * version or flush or call _mesa_update_state().  This is done by

- * attaching optional extra information to the value description

- * struct, it's sort of like an array of opcodes that describe extra

- * checks or actions.

- *

- * Putting all this together we end up with struct value_desc below,

- * and with a couple of macros to help, the table of struct value_desc

- * is about as concise as the specification in the old python script.

- */

-

-#undef CONST

-

-#define FLOAT_TO_BOOLEAN(X)   ( (X) ? GL_TRUE : GL_FALSE )

-#define FLOAT_TO_FIXED(F)     ( ((F) * 65536.0f > INT_MAX) ? INT_MAX : \

-                                ((F) * 65536.0f < INT_MIN) ? INT_MIN : \

-                                (GLint) ((F) * 65536.0f) )

-

-#define INT_TO_BOOLEAN(I)     ( (I) ? GL_TRUE : GL_FALSE )

-#define INT_TO_FIXED(I)       ( ((I) > SHRT_MAX) ? INT_MAX : \

-                                ((I) < SHRT_MIN) ? INT_MIN : \

-                                (GLint) ((I) * 65536) )

-

-#define INT64_TO_BOOLEAN(I)   ( (I) ? GL_TRUE : GL_FALSE )

-#define INT64_TO_INT(I)       ( (GLint)((I > INT_MAX) ? INT_MAX : ((I < INT_MIN) ? INT_MIN : (I))) )

-

-#define BOOLEAN_TO_INT(B)     ( (GLint) (B) )

-#define BOOLEAN_TO_INT64(B)   ( (GLint64) (B) )

-#define BOOLEAN_TO_FLOAT(B)   ( (B) ? 1.0F : 0.0F )

-#define BOOLEAN_TO_FIXED(B)   ( (GLint) ((B) ? 1 : 0) << 16 )

-

-#define ENUM_TO_INT64(E)      ( (GLint64) (E) )

-#define ENUM_TO_FIXED(E)      (E)

-

-enum value_type {

-   TYPE_INVALID,

-   TYPE_API_MASK,

-   TYPE_INT,

-   TYPE_INT_2,

-   TYPE_INT_3,

-   TYPE_INT_4,

-   TYPE_INT_N,

-   TYPE_INT64,

-   TYPE_ENUM,

-   TYPE_ENUM_2,

-   TYPE_BOOLEAN,

-   TYPE_BIT_0,

-   TYPE_BIT_1,

-   TYPE_BIT_2,

-   TYPE_BIT_3,

-   TYPE_BIT_4,

-   TYPE_BIT_5,

-   TYPE_FLOAT,

-   TYPE_FLOAT_2,

-   TYPE_FLOAT_3,

-   TYPE_FLOAT_4,

-   TYPE_FLOATN,

-   TYPE_FLOATN_2,

-   TYPE_FLOATN_3,

-   TYPE_FLOATN_4,

-   TYPE_DOUBLEN,

-   TYPE_MATRIX,

-   TYPE_MATRIX_T,

-   TYPE_CONST

-};

-

-enum value_location {

-   LOC_BUFFER,

-   LOC_CONTEXT,

-   LOC_ARRAY,

-   LOC_TEXUNIT,

-   LOC_CUSTOM

-};

-

-enum value_extra {

-   EXTRA_END = 0x8000,

-   EXTRA_VERSION_30,

-   EXTRA_VERSION_31,

-   EXTRA_VERSION_32,

-   EXTRA_VERSION_ES2,

-   EXTRA_NEW_BUFFERS, 

-   EXTRA_VALID_DRAW_BUFFER,

-   EXTRA_VALID_TEXTURE_UNIT,

-   EXTRA_FLUSH_CURRENT,

-};

-

-#define NO_EXTRA NULL

-#define NO_OFFSET 0

-

-struct value_desc {

-   GLenum pname;

-   GLubyte location;  /**< enum value_location */

-   GLubyte type;      /**< enum value_type */

-   int offset;

-   const int *extra;

-};

-

-union value {

-   GLfloat value_float;

-   GLfloat value_float_4[4];

-   GLmatrix *value_matrix;

-   GLint value_int;

-   GLint value_int_4[4];

-   GLint64 value_int64;

-   GLenum value_enum;

-

-   /* Sigh, see GL_COMPRESSED_TEXTURE_FORMATS_ARB handling */

-   struct {

-      GLint n, ints[100];

-   } value_int_n;

-   GLboolean value_bool;

-};

-

-#define BUFFER_FIELD(field, type) \

-   LOC_BUFFER, type, offsetof(struct gl_framebuffer, field)

-#define CONTEXT_FIELD(field, type) \

-   LOC_CONTEXT, type, offsetof(struct gl_context, field)

-#define ARRAY_FIELD(field, type) \

-   LOC_ARRAY, type, offsetof(struct gl_array_object, field)

-#define CONST(value) \

-   LOC_CONTEXT, TYPE_CONST, value

-

-#define BUFFER_INT(field) BUFFER_FIELD(field, TYPE_INT)

-#define BUFFER_ENUM(field) BUFFER_FIELD(field, TYPE_ENUM)

-#define BUFFER_BOOL(field) BUFFER_FIELD(field, TYPE_BOOLEAN)

-

-#define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)

-#define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)

-#define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)

-#define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)

-#define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)

-#define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)

-#define CONTEXT_BIT0(field) CONTEXT_FIELD(field, TYPE_BIT_0)

-#define CONTEXT_BIT1(field) CONTEXT_FIELD(field, TYPE_BIT_1)

-#define CONTEXT_BIT2(field) CONTEXT_FIELD(field, TYPE_BIT_2)

-#define CONTEXT_BIT3(field) CONTEXT_FIELD(field, TYPE_BIT_3)

-#define CONTEXT_BIT4(field) CONTEXT_FIELD(field, TYPE_BIT_4)

-#define CONTEXT_BIT5(field) CONTEXT_FIELD(field, TYPE_BIT_5)

-#define CONTEXT_FLOAT(field) CONTEXT_FIELD(field, TYPE_FLOAT)

-#define CONTEXT_FLOAT2(field) CONTEXT_FIELD(field, TYPE_FLOAT_2)

-#define CONTEXT_FLOAT3(field) CONTEXT_FIELD(field, TYPE_FLOAT_3)

-#define CONTEXT_FLOAT4(field) CONTEXT_FIELD(field, TYPE_FLOAT_4)

-#define CONTEXT_MATRIX(field) CONTEXT_FIELD(field, TYPE_MATRIX)

-#define CONTEXT_MATRIX_T(field) CONTEXT_FIELD(field, TYPE_MATRIX_T)

-

-#define ARRAY_INT(field) ARRAY_FIELD(field, TYPE_INT)

-#define ARRAY_ENUM(field) ARRAY_FIELD(field, TYPE_ENUM)

-#define ARRAY_BOOL(field) ARRAY_FIELD(field, TYPE_BOOLEAN)

-

-#define EXT(f)					\

-   offsetof(struct gl_extensions, f)

-

-#define EXTRA_EXT(e)				\

-   static const int extra_##e[] = {		\

-      EXT(e), EXTRA_END				\

-   }

-

-#define EXTRA_EXT2(e1, e2)			\

-   static const int extra_##e1##_##e2[] = {	\

-      EXT(e1), EXT(e2), EXTRA_END		\

-   }

-

-/* The 'extra' mechanism is a way to specify extra checks (such as

- * extensions or specific gl versions) or actions (flush current, new

- * buffers) that we need to do before looking up an enum.  We need to

- * declare them all up front so we can refer to them in the value_desc

- * structs below. */

-

-static const int extra_new_buffers[] = {

-   EXTRA_NEW_BUFFERS,

-   EXTRA_END

-};

-

-static const int extra_valid_draw_buffer[] = {

-   EXTRA_VALID_DRAW_BUFFER,

-   EXTRA_END

-};

-

-static const int extra_valid_texture_unit[] = {

-   EXTRA_VALID_TEXTURE_UNIT,

-   EXTRA_END

-};

-

-static const int extra_flush_current_valid_texture_unit[] = {

-   EXTRA_FLUSH_CURRENT,

-   EXTRA_VALID_TEXTURE_UNIT,

-   EXTRA_END

-};

-

-static const int extra_flush_current[] = {

-   EXTRA_FLUSH_CURRENT,

-   EXTRA_END

-};

-

-static const int extra_new_buffers_OES_read_format[] = {

-   EXTRA_NEW_BUFFERS,

-   EXT(OES_read_format),

-   EXTRA_END

-};

-

-static const int extra_EXT_secondary_color_flush_current[] = {

-   EXT(EXT_secondary_color),

-   EXTRA_FLUSH_CURRENT,

-   EXTRA_END

-};

-

-static const int extra_EXT_fog_coord_flush_current[] = {

-   EXT(EXT_fog_coord),

-   EXTRA_FLUSH_CURRENT,

-   EXTRA_END

-};

-

-static const int extra_EXT_texture_integer[] = {

-   EXT(EXT_texture_integer),

-   EXTRA_END

-};

-

-static const int extra_EXT_gpu_shader4[] = {

-   EXT(EXT_gpu_shader4),

-   EXTRA_END

-};

-

-

-EXTRA_EXT(ARB_ES2_compatibility);

-EXTRA_EXT(ARB_multitexture);

-EXTRA_EXT(ARB_texture_cube_map);

-EXTRA_EXT(MESA_texture_array);

-EXTRA_EXT2(EXT_secondary_color, ARB_vertex_program);

-EXTRA_EXT(EXT_secondary_color);

-EXTRA_EXT(EXT_fog_coord);

-EXTRA_EXT(EXT_texture_lod_bias);

-EXTRA_EXT(EXT_texture_filter_anisotropic);

-EXTRA_EXT(IBM_rasterpos_clip);

-EXTRA_EXT(NV_point_sprite);

-EXTRA_EXT(SGIS_generate_mipmap);

-EXTRA_EXT(NV_vertex_program);

-EXTRA_EXT(NV_fragment_program);

-EXTRA_EXT(NV_texture_rectangle);

-EXTRA_EXT(EXT_stencil_two_side);

-EXTRA_EXT(NV_light_max_exponent);

-EXTRA_EXT(SGI_texture_color_table);

-EXTRA_EXT(EXT_depth_bounds_test);

-EXTRA_EXT(ARB_depth_clamp);

-EXTRA_EXT(ATI_fragment_shader);

-EXTRA_EXT(EXT_framebuffer_blit);

-EXTRA_EXT(ARB_shader_objects);

-EXTRA_EXT(EXT_provoking_vertex);

-EXTRA_EXT(ARB_fragment_shader);

-EXTRA_EXT(ARB_fragment_program);

-EXTRA_EXT2(ARB_framebuffer_object, EXT_framebuffer_multisample);

-EXTRA_EXT(EXT_framebuffer_object);

-EXTRA_EXT(APPLE_vertex_array_object);

-EXTRA_EXT(ARB_seamless_cube_map);

-EXTRA_EXT(EXT_compiled_vertex_array);

-EXTRA_EXT(ARB_sync);

-EXTRA_EXT(ARB_vertex_shader);

-EXTRA_EXT(EXT_transform_feedback);

-EXTRA_EXT(ARB_transform_feedback2);

-EXTRA_EXT(EXT_pixel_buffer_object);

-EXTRA_EXT(ARB_vertex_program);

-EXTRA_EXT2(NV_point_sprite, ARB_point_sprite);

-EXTRA_EXT2(ARB_fragment_program, NV_fragment_program);

-EXTRA_EXT2(ARB_vertex_program, NV_vertex_program);

-EXTRA_EXT2(ARB_vertex_program, ARB_fragment_program);

-EXTRA_EXT(ARB_vertex_buffer_object);

-EXTRA_EXT(ARB_geometry_shader4);

-EXTRA_EXT(ARB_copy_buffer);

-EXTRA_EXT(EXT_framebuffer_sRGB);

-

-static const int

-extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = {

-   EXT(ARB_vertex_program),

-   EXT(ARB_fragment_program),

-   EXT(NV_vertex_program),

-   EXTRA_END

-};

-

-static const int

-extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = {

-   EXT(NV_vertex_program),

-   EXT(ARB_vertex_program),

-   EXT(ARB_fragment_program),

-   EXT(NV_vertex_program),

-   EXTRA_END

-};

-

-static const int

-extra_NV_primitive_restart[] = {

-   EXT(NV_primitive_restart),

-   EXTRA_END

-};

-

-static const int extra_version_30[] = { EXTRA_VERSION_30, EXTRA_END };

-static const int extra_version_31[] = { EXTRA_VERSION_31, EXTRA_END };

-static const int extra_version_32[] = { EXTRA_VERSION_32, EXTRA_END };

-

-static const int

-extra_ARB_vertex_program_version_es2[] = {

-   EXT(ARB_vertex_program),

-   EXTRA_VERSION_ES2,

-   EXTRA_END

-};

-

-#define API_OPENGL_BIT (1 << API_OPENGL)

-#define API_OPENGLES_BIT (1 << API_OPENGLES)

-#define API_OPENGLES2_BIT (1 << API_OPENGLES2)

-

-/* This is the big table describing all the enums we accept in

- * glGet*v().  The table is partitioned into six parts: enums

- * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared

- * between OpenGL and GLES, enums exclusive to GLES, etc for the

- * remaining combinations.  When we add the enums to the hash table in

- * _mesa_init_get_hash(), we only add the enums for the API we're

- * instantiating and the different sections are guarded by #if

- * FEATURE_GL etc to make sure we only compile in the enums we may

- * need. */

-

-static const struct value_desc values[] = {

-   /* Enums shared between OpenGL, GLES1 and GLES2 */

-   { 0, 0, TYPE_API_MASK,

-     API_OPENGL_BIT | API_OPENGLES_BIT | API_OPENGLES2_BIT, NO_EXTRA},

-   { GL_ALPHA_BITS, BUFFER_INT(Visual.alphaBits), extra_new_buffers },

-   { GL_BLEND, CONTEXT_BIT0(Color.BlendEnabled), NO_EXTRA },

-   { GL_BLEND_SRC, CONTEXT_ENUM(Color.Blend[0].SrcRGB), NO_EXTRA },

-   { GL_BLUE_BITS, BUFFER_INT(Visual.blueBits), extra_new_buffers },

-   { GL_COLOR_CLEAR_VALUE, CONTEXT_FIELD(Color.ClearColor[0], TYPE_FLOATN_4), NO_EXTRA },

-   { GL_COLOR_WRITEMASK, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },

-   { GL_CULL_FACE, CONTEXT_BOOL(Polygon.CullFlag), NO_EXTRA },

-   { GL_CULL_FACE_MODE, CONTEXT_ENUM(Polygon.CullFaceMode), NO_EXTRA },

-   { GL_DEPTH_BITS, BUFFER_INT(Visual.depthBits), NO_EXTRA },

-   { GL_DEPTH_CLEAR_VALUE, CONTEXT_FIELD(Depth.Clear, TYPE_DOUBLEN), NO_EXTRA },

-   { GL_DEPTH_FUNC, CONTEXT_ENUM(Depth.Func), NO_EXTRA },

-   { GL_DEPTH_RANGE, CONTEXT_FIELD(Viewport.Near, TYPE_FLOATN_2), NO_EXTRA },

-   { GL_DEPTH_TEST, CONTEXT_BOOL(Depth.Test), NO_EXTRA },

-   { GL_DEPTH_WRITEMASK, CONTEXT_BOOL(Depth.Mask), NO_EXTRA },

-   { GL_DITHER, CONTEXT_BOOL(Color.DitherFlag), NO_EXTRA },

-   { GL_FRONT_FACE, CONTEXT_ENUM(Polygon.FrontFace), NO_EXTRA },

-   { GL_GREEN_BITS, BUFFER_INT(Visual.greenBits), extra_new_buffers },

-   { GL_LINE_WIDTH, CONTEXT_FLOAT(Line.Width), NO_EXTRA },

-   { GL_ALIASED_LINE_WIDTH_RANGE, CONTEXT_FLOAT2(Const.MinLineWidth), NO_EXTRA },

-   { GL_MAX_ELEMENTS_VERTICES, CONTEXT_INT(Const.MaxArrayLockSize), NO_EXTRA },

-   { GL_MAX_ELEMENTS_INDICES, CONTEXT_INT(Const.MaxArrayLockSize), NO_EXTRA },

-   { GL_MAX_TEXTURE_SIZE, LOC_CUSTOM, TYPE_INT,

-     offsetof(struct gl_context, Const.MaxTextureLevels), NO_EXTRA },

-   { GL_MAX_VIEWPORT_DIMS, CONTEXT_INT2(Const.MaxViewportWidth), NO_EXTRA },

-   { GL_PACK_ALIGNMENT, CONTEXT_INT(Pack.Alignment), NO_EXTRA },

-   { GL_ALIASED_POINT_SIZE_RANGE, CONTEXT_FLOAT2(Const.MinPointSize), NO_EXTRA },

-   { GL_POLYGON_OFFSET_FACTOR, CONTEXT_FLOAT(Polygon.OffsetFactor ), NO_EXTRA },

-   { GL_POLYGON_OFFSET_UNITS, CONTEXT_FLOAT(Polygon.OffsetUnits ), NO_EXTRA },

-   { GL_POLYGON_OFFSET_FILL, CONTEXT_BOOL(Polygon.OffsetFill), NO_EXTRA },

-   { GL_RED_BITS, BUFFER_INT(Visual.redBits), extra_new_buffers },

-   { GL_SCISSOR_BOX, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },

-   { GL_SCISSOR_TEST, CONTEXT_BOOL(Scissor.Enabled), NO_EXTRA },

-   { GL_STENCIL_BITS, BUFFER_INT(Visual.stencilBits), NO_EXTRA },

-   { GL_STENCIL_CLEAR_VALUE, CONTEXT_INT(Stencil.Clear), NO_EXTRA },

-   { GL_STENCIL_FAIL, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },

-   { GL_STENCIL_FUNC, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },

-   { GL_STENCIL_PASS_DEPTH_FAIL, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },

-   { GL_STENCIL_PASS_DEPTH_PASS, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },

-   { GL_STENCIL_REF, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },

-   { GL_STENCIL_TEST, CONTEXT_BOOL(Stencil.Enabled), NO_EXTRA },

-   { GL_STENCIL_VALUE_MASK, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },

-   { GL_STENCIL_WRITEMASK, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },

-   { GL_SUBPIXEL_BITS, CONTEXT_INT(Const.SubPixelBits), NO_EXTRA },

-   { GL_TEXTURE_BINDING_2D, LOC_CUSTOM, TYPE_INT, TEXTURE_2D_INDEX, NO_EXTRA },

-   { GL_UNPACK_ALIGNMENT, CONTEXT_INT(Unpack.Alignment), NO_EXTRA },

-   { GL_VIEWPORT, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },

-

-   /* GL_ARB_multitexture */

-   { GL_ACTIVE_TEXTURE_ARB,

-     LOC_CUSTOM, TYPE_INT, 0, extra_ARB_multitexture },

-

-   /* Note that all the OES_* extensions require that the Mesa "struct

-    * gl_extensions" include a member with the name of the extension.

-    * That structure does not yet include OES extensions (and we're

-    * not sure whether it will).  If it does, all the OES_*

-    * extensions below should mark the dependency. */

-

-   /* GL_ARB_texture_cube_map */

-   { GL_TEXTURE_BINDING_CUBE_MAP_ARB, LOC_CUSTOM, TYPE_INT,

-     TEXTURE_CUBE_INDEX, extra_ARB_texture_cube_map },

-   { GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, LOC_CUSTOM, TYPE_INT,

-     offsetof(struct gl_context, Const.MaxCubeTextureLevels),

-     extra_ARB_texture_cube_map }, /* XXX: OES_texture_cube_map */

-

-   /* XXX: OES_blend_subtract */

-   { GL_BLEND_SRC_RGB_EXT, CONTEXT_ENUM(Color.Blend[0].SrcRGB), NO_EXTRA },

-   { GL_BLEND_DST_RGB_EXT, CONTEXT_ENUM(Color.Blend[0].DstRGB), NO_EXTRA },

-   { GL_BLEND_SRC_ALPHA_EXT, CONTEXT_ENUM(Color.Blend[0].SrcA), NO_EXTRA },

-   { GL_BLEND_DST_ALPHA_EXT, CONTEXT_ENUM(Color.Blend[0].DstA), NO_EXTRA },

-

-   /* GL_BLEND_EQUATION_RGB, which is what we're really after, is

-    * defined identically to GL_BLEND_EQUATION. */

-   { GL_BLEND_EQUATION, CONTEXT_ENUM(Color.Blend[0].EquationRGB), NO_EXTRA },

-   { GL_BLEND_EQUATION_ALPHA_EXT, CONTEXT_ENUM(Color.Blend[0].EquationA), NO_EXTRA },

-

-   /* GL_ARB_texture_compression */

-   { GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },

-   { GL_COMPRESSED_TEXTURE_FORMATS_ARB, LOC_CUSTOM, TYPE_INT_N, 0, NO_EXTRA },

-

-   /* GL_ARB_multisample */

-   { GL_SAMPLE_ALPHA_TO_COVERAGE_ARB,

-     CONTEXT_BOOL(Multisample.SampleAlphaToCoverage), NO_EXTRA },

-   { GL_SAMPLE_COVERAGE_ARB, CONTEXT_BOOL(Multisample.SampleCoverage), NO_EXTRA },

-   { GL_SAMPLE_COVERAGE_VALUE_ARB,

-     CONTEXT_FLOAT(Multisample.SampleCoverageValue), NO_EXTRA },

-   { GL_SAMPLE_COVERAGE_INVERT_ARB,

-     CONTEXT_BOOL(Multisample.SampleCoverageInvert), NO_EXTRA },

-   { GL_SAMPLE_BUFFERS_ARB, BUFFER_INT(Visual.sampleBuffers), NO_EXTRA },

-   { GL_SAMPLES_ARB, BUFFER_INT(Visual.samples), NO_EXTRA },

-

-   /* GL_SGIS_generate_mipmap */

-   { GL_GENERATE_MIPMAP_HINT_SGIS, CONTEXT_ENUM(Hint.GenerateMipmap),

-     extra_SGIS_generate_mipmap },

-

-   /* GL_ARB_vertex_buffer_object */

-   { GL_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },

-

-   /* GL_ARB_vertex_buffer_object */

-   /* GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB - not supported */

-   { GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0,

-     extra_ARB_vertex_buffer_object },

-

-   /* GL_ARB_copy_buffer */

-   { GL_COPY_READ_BUFFER, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_copy_buffer },

-   { GL_COPY_WRITE_BUFFER, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_copy_buffer },

-

-   /* GL_OES_read_format */

-   { GL_IMPLEMENTATION_COLOR_READ_TYPE_OES, LOC_CUSTOM, TYPE_INT, 0,

-     extra_new_buffers_OES_read_format },

-   { GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES, LOC_CUSTOM, TYPE_INT, 0,

-     extra_new_buffers_OES_read_format },

-

-   /* GL_EXT_framebuffer_object */

-   { GL_FRAMEBUFFER_BINDING_EXT, BUFFER_INT(Name),

-     extra_EXT_framebuffer_object },

-   { GL_RENDERBUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,

-     extra_EXT_framebuffer_object },

-   { GL_MAX_RENDERBUFFER_SIZE_EXT, CONTEXT_INT(Const.MaxRenderbufferSize),

-     extra_EXT_framebuffer_object },

-

-   /* This entry isn't spec'ed for GLES 2, but is needed for Mesa's

-    * GLSL: */

-   { GL_MAX_CLIP_PLANES, CONTEXT_INT(Const.MaxClipPlanes), NO_EXTRA },

-

-#if FEATURE_GL || FEATURE_ES1

-   /* Enums in OpenGL and GLES1 */

-   { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGLES_BIT, NO_EXTRA },

-   { GL_LIGHT0, CONTEXT_BOOL(Light.Light[0].Enabled), NO_EXTRA },

-   { GL_LIGHT1, CONTEXT_BOOL(Light.Light[1].Enabled), NO_EXTRA },

-   { GL_LIGHT2, CONTEXT_BOOL(Light.Light[2].Enabled), NO_EXTRA },

-   { GL_LIGHT3, CONTEXT_BOOL(Light.Light[3].Enabled), NO_EXTRA },

-   { GL_LIGHT4, CONTEXT_BOOL(Light.Light[4].Enabled), NO_EXTRA },

-   { GL_LIGHT5, CONTEXT_BOOL(Light.Light[5].Enabled), NO_EXTRA },

-   { GL_LIGHT6, CONTEXT_BOOL(Light.Light[6].Enabled), NO_EXTRA },

-   { GL_LIGHT7, CONTEXT_BOOL(Light.Light[7].Enabled), NO_EXTRA },

-   { GL_LIGHTING, CONTEXT_BOOL(Light.Enabled), NO_EXTRA },

-   { GL_LIGHT_MODEL_AMBIENT,

-     CONTEXT_FIELD(Light.Model.Ambient[0], TYPE_FLOATN_4), NO_EXTRA },

-   { GL_LIGHT_MODEL_TWO_SIDE, CONTEXT_BOOL(Light.Model.TwoSide), NO_EXTRA },

-   { GL_ALPHA_TEST, CONTEXT_BOOL(Color.AlphaEnabled), NO_EXTRA },

-   { GL_ALPHA_TEST_FUNC, CONTEXT_ENUM(Color.AlphaFunc), NO_EXTRA },

-   { GL_ALPHA_TEST_REF, CONTEXT_FIELD(Color.AlphaRef, TYPE_FLOATN), NO_EXTRA },

-   { GL_BLEND_DST, CONTEXT_ENUM(Color.Blend[0].DstRGB), NO_EXTRA },

-   { GL_CLIP_PLANE0, CONTEXT_BIT0(Transform.ClipPlanesEnabled), NO_EXTRA },

-   { GL_CLIP_PLANE1, CONTEXT_BIT1(Transform.ClipPlanesEnabled), NO_EXTRA },

-   { GL_CLIP_PLANE2, CONTEXT_BIT2(Transform.ClipPlanesEnabled), NO_EXTRA },

-   { GL_CLIP_PLANE3, CONTEXT_BIT3(Transform.ClipPlanesEnabled), NO_EXTRA },

-   { GL_CLIP_PLANE4, CONTEXT_BIT4(Transform.ClipPlanesEnabled), NO_EXTRA },

-   { GL_CLIP_PLANE5, CONTEXT_BIT5(Transform.ClipPlanesEnabled), NO_EXTRA },

-   { GL_COLOR_MATERIAL, CONTEXT_BOOL(Light.ColorMaterialEnabled), NO_EXTRA },

-   { GL_CURRENT_COLOR,

-     CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR0][0], TYPE_FLOATN_4),

-     extra_flush_current },

-   { GL_CURRENT_NORMAL,

-     CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_NORMAL][0], TYPE_FLOATN_3),

-     extra_flush_current },

-   { GL_CURRENT_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,

-     extra_flush_current_valid_texture_unit },

-   { GL_DISTANCE_ATTENUATION_EXT, CONTEXT_FLOAT3(Point.Params[0]), NO_EXTRA },

-   { GL_FOG, CONTEXT_BOOL(Fog.Enabled), NO_EXTRA },

-   { GL_FOG_COLOR, CONTEXT_FIELD(Fog.Color[0], TYPE_FLOATN_4), NO_EXTRA },

-   { GL_FOG_DENSITY, CONTEXT_FLOAT(Fog.Density), NO_EXTRA },

-   { GL_FOG_END, CONTEXT_FLOAT(Fog.End), NO_EXTRA },

-   { GL_FOG_HINT, CONTEXT_ENUM(Hint.Fog), NO_EXTRA },

-   { GL_FOG_MODE, CONTEXT_ENUM(Fog.Mode), NO_EXTRA },

-   { GL_FOG_START, CONTEXT_FLOAT(Fog.Start), NO_EXTRA },

-   { GL_LINE_SMOOTH, CONTEXT_BOOL(Line.SmoothFlag), NO_EXTRA },

-   { GL_LINE_SMOOTH_HINT, CONTEXT_ENUM(Hint.LineSmooth), NO_EXTRA },

-   { GL_LINE_WIDTH_RANGE, CONTEXT_FLOAT2(Const.MinLineWidthAA), NO_EXTRA },

-   { GL_COLOR_LOGIC_OP, CONTEXT_BOOL(Color.ColorLogicOpEnabled), NO_EXTRA },

-   { GL_LOGIC_OP_MODE, CONTEXT_ENUM(Color.LogicOp), NO_EXTRA },

-   { GL_MATRIX_MODE, CONTEXT_ENUM(Transform.MatrixMode), NO_EXTRA },

-   { GL_MAX_MODELVIEW_STACK_DEPTH, CONST(MAX_MODELVIEW_STACK_DEPTH), NO_EXTRA },

-   { GL_MAX_PROJECTION_STACK_DEPTH, CONST(MAX_PROJECTION_STACK_DEPTH), NO_EXTRA },

-   { GL_MAX_TEXTURE_STACK_DEPTH, CONST(MAX_TEXTURE_STACK_DEPTH), NO_EXTRA },

-   { GL_MODELVIEW_MATRIX, CONTEXT_MATRIX(ModelviewMatrixStack.Top), NO_EXTRA },

-   { GL_MODELVIEW_STACK_DEPTH, LOC_CUSTOM, TYPE_INT,

-     offsetof(struct gl_context, ModelviewMatrixStack.Depth), NO_EXTRA },

-   { GL_NORMALIZE, CONTEXT_BOOL(Transform.Normalize), NO_EXTRA },

-   { GL_PACK_SKIP_IMAGES_EXT, CONTEXT_INT(Pack.SkipImages), NO_EXTRA },

-   { GL_PERSPECTIVE_CORRECTION_HINT, CONTEXT_ENUM(Hint.PerspectiveCorrection), NO_EXTRA },

-   { GL_POINT_SIZE, CONTEXT_FLOAT(Point.Size), NO_EXTRA },

-   { GL_POINT_SIZE_RANGE, CONTEXT_FLOAT2(Const.MinPointSizeAA), NO_EXTRA },

-   { GL_POINT_SMOOTH, CONTEXT_BOOL(Point.SmoothFlag), NO_EXTRA },

-   { GL_POINT_SMOOTH_HINT, CONTEXT_ENUM(Hint.PointSmooth), NO_EXTRA },

-   { GL_POINT_SIZE_MIN_EXT, CONTEXT_FLOAT(Point.MinSize), NO_EXTRA },

-   { GL_POINT_SIZE_MAX_EXT, CONTEXT_FLOAT(Point.MaxSize), NO_EXTRA },

-   { GL_POINT_FADE_THRESHOLD_SIZE_EXT, CONTEXT_FLOAT(Point.Threshold), NO_EXTRA },

-   { GL_PROJECTION_MATRIX, CONTEXT_MATRIX(ProjectionMatrixStack.Top), NO_EXTRA },

-   { GL_PROJECTION_STACK_DEPTH, LOC_CUSTOM, TYPE_INT,

-     offsetof(struct gl_context, ProjectionMatrixStack.Depth), NO_EXTRA },

-   { GL_RESCALE_NORMAL, CONTEXT_BOOL(Transform.RescaleNormals), NO_EXTRA },

-   { GL_SHADE_MODEL, CONTEXT_ENUM(Light.ShadeModel), NO_EXTRA },

-   { GL_TEXTURE_2D, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },

-   { GL_TEXTURE_MATRIX, LOC_CUSTOM, TYPE_MATRIX, 0, extra_valid_texture_unit },

-   { GL_TEXTURE_STACK_DEPTH, LOC_CUSTOM, TYPE_INT, 0,

-     extra_valid_texture_unit  },

-

-   { GL_VERTEX_ARRAY, ARRAY_BOOL(Vertex.Enabled), NO_EXTRA },

-   { GL_VERTEX_ARRAY_SIZE, ARRAY_INT(Vertex.Size), NO_EXTRA },

-   { GL_VERTEX_ARRAY_TYPE, ARRAY_ENUM(Vertex.Type), NO_EXTRA },

-   { GL_VERTEX_ARRAY_STRIDE, ARRAY_INT(Vertex.Stride), NO_EXTRA },

-   { GL_NORMAL_ARRAY, ARRAY_ENUM(Normal.Enabled), NO_EXTRA },

-   { GL_NORMAL_ARRAY_TYPE, ARRAY_ENUM(Normal.Type), NO_EXTRA },

-   { GL_NORMAL_ARRAY_STRIDE, ARRAY_INT(Normal.Stride), NO_EXTRA },

-   { GL_COLOR_ARRAY, ARRAY_BOOL(Color.Enabled), NO_EXTRA },

-   { GL_COLOR_ARRAY_SIZE, ARRAY_INT(Color.Size), NO_EXTRA },

-   { GL_COLOR_ARRAY_TYPE, ARRAY_ENUM(Color.Type), NO_EXTRA },

-   { GL_COLOR_ARRAY_STRIDE, ARRAY_INT(Color.Stride), NO_EXTRA },

-   { GL_TEXTURE_COORD_ARRAY,

-     LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Enabled), NO_EXTRA },

-   { GL_TEXTURE_COORD_ARRAY_SIZE,

-     LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Size), NO_EXTRA },

-   { GL_TEXTURE_COORD_ARRAY_TYPE,

-     LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Type), NO_EXTRA },

-   { GL_TEXTURE_COORD_ARRAY_STRIDE,

-     LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Stride), NO_EXTRA },

-

-   /* GL_ARB_ES2_compatibility */

-   { GL_SHADER_COMPILER, CONST(1), extra_ARB_ES2_compatibility },

-   { GL_MAX_VARYING_VECTORS, CONTEXT_INT(Const.MaxVarying),

-     extra_ARB_ES2_compatibility },

-   { GL_MAX_VERTEX_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0,

-     extra_ARB_ES2_compatibility },

-   { GL_MAX_FRAGMENT_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0,

-     extra_ARB_ES2_compatibility },

-

-   /* GL_ARB_multitexture */

-   { GL_MAX_TEXTURE_UNITS_ARB,

-     CONTEXT_INT(Const.MaxTextureUnits), extra_ARB_multitexture },

-   { GL_CLIENT_ACTIVE_TEXTURE_ARB,

-     LOC_CUSTOM, TYPE_INT, 0, extra_ARB_multitexture },

-

-   /* GL_ARB_texture_cube_map */

-   { GL_TEXTURE_CUBE_MAP_ARB, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },

-   /* S, T, and R are always set at the same time */

-   { GL_TEXTURE_GEN_STR_OES, LOC_TEXUNIT, TYPE_BIT_0,

-     offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },

-

-   /* GL_ARB_multisample */

-   { GL_MULTISAMPLE_ARB, CONTEXT_BOOL(Multisample.Enabled), NO_EXTRA },

-   { GL_SAMPLE_ALPHA_TO_ONE_ARB, CONTEXT_BOOL(Multisample.SampleAlphaToOne), NO_EXTRA },

-

-   /* GL_ARB_vertex_buffer_object */

-   { GL_VERTEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,

-     offsetof(struct gl_array_object, Vertex.BufferObj), NO_EXTRA },

-   { GL_NORMAL_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,

-     offsetof(struct gl_array_object, Normal.BufferObj), NO_EXTRA },

-   { GL_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,

-     offsetof(struct gl_array_object, Color.BufferObj), NO_EXTRA },

-   { GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },

-

-   /* GL_OES_point_sprite */

-   { GL_POINT_SPRITE_NV,

-     CONTEXT_BOOL(Point.PointSprite),

-     extra_NV_point_sprite_ARB_point_sprite },

-

-   /* GL_ARB_fragment_shader */

-   { GL_MAX_FRAGMENT_UNIFORM_COMPONENTS_ARB,

-     CONTEXT_INT(Const.FragmentProgram.MaxUniformComponents),

-     extra_ARB_fragment_shader },

-

-   /* GL_ARB_vertex_shader */

-   { GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB,

-     CONTEXT_INT(Const.VertexProgram.MaxUniformComponents),

-     extra_ARB_vertex_shader },

-   { GL_MAX_VARYING_FLOATS_ARB, LOC_CUSTOM, TYPE_INT, 0,

-     extra_ARB_vertex_shader },

-

-   /* GL_EXT_texture_lod_bias */

-   { GL_MAX_TEXTURE_LOD_BIAS_EXT, CONTEXT_FLOAT(Const.MaxTextureLodBias),

-	 extra_EXT_texture_lod_bias },

-

-   /* GL_EXT_texture_filter_anisotropic */

-   { GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT,

-     CONTEXT_FLOAT(Const.MaxTextureMaxAnisotropy),

-     extra_EXT_texture_filter_anisotropic },

-#endif /* FEATURE_GL || FEATURE_ES1 */

-

-#if FEATURE_ES1

-   { 0, 0, TYPE_API_MASK, API_OPENGLES_BIT },

-   /* XXX: OES_matrix_get */

-   { GL_MODELVIEW_MATRIX_FLOAT_AS_INT_BITS_OES },

-   { GL_PROJECTION_MATRIX_FLOAT_AS_INT_BITS_OES },

-   { GL_TEXTURE_MATRIX_FLOAT_AS_INT_BITS_OES },

-

-   /* OES_point_size_array */

-   { GL_POINT_SIZE_ARRAY_OES, ARRAY_FIELD(PointSize.Enabled, TYPE_BOOLEAN) },

-   { GL_POINT_SIZE_ARRAY_TYPE_OES, ARRAY_FIELD(PointSize.Type, TYPE_ENUM) },

-   { GL_POINT_SIZE_ARRAY_STRIDE_OES, ARRAY_FIELD(PointSize.Stride, TYPE_INT) },

-   { GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES, LOC_CUSTOM, TYPE_INT, 0 },

-#endif /* FEATURE_ES1 */

-

-#if FEATURE_GL || FEATURE_ES2

-   { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGLES2_BIT, NO_EXTRA },

-   /* This entry isn't spec'ed for GLES 2, but is needed for Mesa's GLSL: */

-   { GL_MAX_LIGHTS, CONTEXT_INT(Const.MaxLights), NO_EXTRA },

-   { GL_MAX_TEXTURE_COORDS_ARB, /* == GL_MAX_TEXTURE_COORDS_NV */

-     CONTEXT_INT(Const.MaxTextureCoordUnits),

-     extra_ARB_fragment_program_NV_fragment_program },

-

-   /* GL_ARB_draw_buffers */

-   { GL_MAX_DRAW_BUFFERS_ARB, CONTEXT_INT(Const.MaxDrawBuffers), NO_EXTRA },

-

-   { GL_BLEND_COLOR_EXT, CONTEXT_FIELD(Color.BlendColor[0], TYPE_FLOATN_4), NO_EXTRA },

-   /* GL_ARB_fragment_program */

-   { GL_MAX_TEXTURE_IMAGE_UNITS_ARB, /* == GL_MAX_TEXTURE_IMAGE_UNITS_NV */

-     CONTEXT_INT(Const.MaxTextureImageUnits),

-     extra_ARB_fragment_program_NV_fragment_program },

-   { GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB,

-     CONTEXT_INT(Const.MaxVertexTextureImageUnits), extra_ARB_vertex_shader },

-   { GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB,

-     CONTEXT_INT(Const.MaxCombinedTextureImageUnits),

-     extra_ARB_vertex_shader },

-

-   /* GL_ARB_shader_objects

-    * Actually, this token isn't part of GL_ARB_shader_objects, but is

-    * close enough for now. */

-   { GL_CURRENT_PROGRAM, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_shader_objects },

-

-   /* OpenGL 2.0 */

-   { GL_STENCIL_BACK_FUNC, CONTEXT_ENUM(Stencil.Function[1]), NO_EXTRA },

-   { GL_STENCIL_BACK_VALUE_MASK, CONTEXT_INT(Stencil.ValueMask[1]), NO_EXTRA },

-   { GL_STENCIL_BACK_WRITEMASK, CONTEXT_INT(Stencil.WriteMask[1]), NO_EXTRA },

-   { GL_STENCIL_BACK_REF, CONTEXT_INT(Stencil.Ref[1]), NO_EXTRA },

-   { GL_STENCIL_BACK_FAIL, CONTEXT_ENUM(Stencil.FailFunc[1]), NO_EXTRA },

-   { GL_STENCIL_BACK_PASS_DEPTH_FAIL, CONTEXT_ENUM(Stencil.ZFailFunc[1]), NO_EXTRA },

-   { GL_STENCIL_BACK_PASS_DEPTH_PASS, CONTEXT_ENUM(Stencil.ZPassFunc[1]), NO_EXTRA },

-

-   { GL_MAX_VERTEX_ATTRIBS_ARB,

-     CONTEXT_INT(Const.VertexProgram.MaxAttribs),

-     extra_ARB_vertex_program_version_es2 },

-

-   /* OES_texture_3D */

-   { GL_TEXTURE_BINDING_3D, LOC_CUSTOM, TYPE_INT, TEXTURE_3D_INDEX, NO_EXTRA },

-   { GL_MAX_3D_TEXTURE_SIZE, LOC_CUSTOM, TYPE_INT,

-     offsetof(struct gl_context, Const.Max3DTextureLevels), NO_EXTRA },

-

-   /* GL_ARB_fragment_program/OES_standard_derivatives */

-   { GL_FRAGMENT_SHADER_DERIVATIVE_HINT_ARB,

-     CONTEXT_ENUM(Hint.FragmentShaderDerivative), extra_ARB_fragment_shader },

-#endif /* FEATURE_GL || FEATURE_ES2 */

-

-#if FEATURE_ES2

-   /* Enums unique to OpenGL ES 2.0 */

-   { 0, 0, TYPE_API_MASK, API_OPENGLES2_BIT, NO_EXTRA },

-   { GL_MAX_FRAGMENT_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },

-   { GL_MAX_VARYING_VECTORS, CONTEXT_INT(Const.MaxVarying), NO_EXTRA },

-   { GL_MAX_VERTEX_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },

-   { GL_SHADER_COMPILER, CONST(1), NO_EXTRA },

-   /* OES_get_program_binary */

-   { GL_NUM_SHADER_BINARY_FORMATS, CONST(0), NO_EXTRA },

-   { GL_SHADER_BINARY_FORMATS, CONST(0), NO_EXTRA },

-#endif /* FEATURE_ES2 */

-

-#if FEATURE_GL

-   /* Remaining enums are only in OpenGL */

-   { 0, 0, TYPE_API_MASK, API_OPENGL_BIT, NO_EXTRA },

-   { GL_ACCUM_RED_BITS, BUFFER_INT(Visual.accumRedBits), NO_EXTRA },

-   { GL_ACCUM_GREEN_BITS, BUFFER_INT(Visual.accumGreenBits), NO_EXTRA },

-   { GL_ACCUM_BLUE_BITS, BUFFER_INT(Visual.accumBlueBits), NO_EXTRA },

-   { GL_ACCUM_ALPHA_BITS, BUFFER_INT(Visual.accumAlphaBits), NO_EXTRA },

-   { GL_ACCUM_CLEAR_VALUE, CONTEXT_FIELD(Accum.ClearColor[0], TYPE_FLOATN_4), NO_EXTRA },

-   { GL_ALPHA_BIAS, CONTEXT_FLOAT(Pixel.AlphaBias), NO_EXTRA },

-   { GL_ALPHA_SCALE, CONTEXT_FLOAT(Pixel.AlphaScale), NO_EXTRA },

-   { GL_ATTRIB_STACK_DEPTH, CONTEXT_INT(AttribStackDepth), NO_EXTRA },

-   { GL_AUTO_NORMAL, CONTEXT_BOOL(Eval.AutoNormal), NO_EXTRA },

-   { GL_AUX_BUFFERS, BUFFER_INT(Visual.numAuxBuffers), NO_EXTRA },

-   { GL_BLUE_BIAS, CONTEXT_FLOAT(Pixel.BlueBias), NO_EXTRA },

-   { GL_BLUE_SCALE, CONTEXT_FLOAT(Pixel.BlueScale), NO_EXTRA },

-   { GL_CLIENT_ATTRIB_STACK_DEPTH, CONTEXT_INT(ClientAttribStackDepth), NO_EXTRA },

-   { GL_COLOR_MATERIAL_FACE, CONTEXT_ENUM(Light.ColorMaterialFace), NO_EXTRA },

-   { GL_COLOR_MATERIAL_PARAMETER, CONTEXT_ENUM(Light.ColorMaterialMode), NO_EXTRA },

-   { GL_CURRENT_INDEX,

-     CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_COLOR_INDEX][0]),

-     extra_flush_current },

-   { GL_CURRENT_RASTER_COLOR,

-     CONTEXT_FIELD(Current.RasterColor[0], TYPE_FLOATN_4), NO_EXTRA },

-   { GL_CURRENT_RASTER_DISTANCE, CONTEXT_FLOAT(Current.RasterDistance), NO_EXTRA },

-   { GL_CURRENT_RASTER_INDEX, CONST(1), NO_EXTRA },

-   { GL_CURRENT_RASTER_POSITION, CONTEXT_FLOAT4(Current.RasterPos[0]), NO_EXTRA },

-   { GL_CURRENT_RASTER_SECONDARY_COLOR,

-     CONTEXT_FIELD(Current.RasterSecondaryColor[0], TYPE_FLOATN_4), NO_EXTRA },

-   { GL_CURRENT_RASTER_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,

-     extra_valid_texture_unit },

-   { GL_CURRENT_RASTER_POSITION_VALID, CONTEXT_BOOL(Current.RasterPosValid), NO_EXTRA },

-   { GL_DEPTH_BIAS, CONTEXT_FLOAT(Pixel.DepthBias), NO_EXTRA },

-   { GL_DEPTH_SCALE, CONTEXT_FLOAT(Pixel.DepthScale), NO_EXTRA },

-   { GL_DOUBLEBUFFER, BUFFER_INT(Visual.doubleBufferMode), NO_EXTRA },

-   { GL_DRAW_BUFFER, BUFFER_ENUM(ColorDrawBuffer[0]), NO_EXTRA },

-   { GL_EDGE_FLAG, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },

-   { GL_FEEDBACK_BUFFER_SIZE, CONTEXT_INT(Feedback.BufferSize), NO_EXTRA },

-   { GL_FEEDBACK_BUFFER_TYPE, CONTEXT_ENUM(Feedback.Type), NO_EXTRA },

-   { GL_FOG_INDEX, CONTEXT_FLOAT(Fog.Index), NO_EXTRA },

-   { GL_GREEN_BIAS, CONTEXT_FLOAT(Pixel.GreenBias), NO_EXTRA },

-   { GL_GREEN_SCALE, CONTEXT_FLOAT(Pixel.GreenScale), NO_EXTRA },

-   { GL_INDEX_BITS, BUFFER_INT(Visual.indexBits), extra_new_buffers },

-   { GL_INDEX_CLEAR_VALUE, CONTEXT_INT(Color.ClearIndex), NO_EXTRA },

-   { GL_INDEX_MODE, CONST(0) , NO_EXTRA}, 

-   { GL_INDEX_OFFSET, CONTEXT_INT(Pixel.IndexOffset), NO_EXTRA },

-   { GL_INDEX_SHIFT, CONTEXT_INT(Pixel.IndexShift), NO_EXTRA },

-   { GL_INDEX_WRITEMASK, CONTEXT_INT(Color.IndexMask), NO_EXTRA },

-   { GL_LIGHT_MODEL_COLOR_CONTROL, CONTEXT_ENUM(Light.Model.ColorControl), NO_EXTRA },

-   { GL_LIGHT_MODEL_LOCAL_VIEWER, CONTEXT_BOOL(Light.Model.LocalViewer), NO_EXTRA },

-   { GL_LINE_STIPPLE, CONTEXT_BOOL(Line.StippleFlag), NO_EXTRA },

-   { GL_LINE_STIPPLE_PATTERN, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },

-   { GL_LINE_STIPPLE_REPEAT, CONTEXT_INT(Line.StippleFactor), NO_EXTRA },

-   { GL_LINE_WIDTH_GRANULARITY, CONTEXT_FLOAT(Const.LineWidthGranularity), NO_EXTRA },

-   { GL_LIST_BASE, CONTEXT_INT(List.ListBase), NO_EXTRA },

-   { GL_LIST_INDEX, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },

-   { GL_LIST_MODE, LOC_CUSTOM, TYPE_ENUM, 0, NO_EXTRA },

-   { GL_INDEX_LOGIC_OP, CONTEXT_BOOL(Color.IndexLogicOpEnabled), NO_EXTRA },

-   { GL_MAP1_COLOR_4, CONTEXT_BOOL(Eval.Map1Color4), NO_EXTRA },

-   { GL_MAP1_GRID_DOMAIN, CONTEXT_FLOAT2(Eval.MapGrid1u1), NO_EXTRA },

-   { GL_MAP1_GRID_SEGMENTS, CONTEXT_INT(Eval.MapGrid1un), NO_EXTRA },

-   { GL_MAP1_INDEX, CONTEXT_BOOL(Eval.Map1Index), NO_EXTRA },

-   { GL_MAP1_NORMAL, CONTEXT_BOOL(Eval.Map1Normal), NO_EXTRA },

-   { GL_MAP1_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map1TextureCoord1), NO_EXTRA },

-   { GL_MAP1_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map1TextureCoord2), NO_EXTRA },

-   { GL_MAP1_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map1TextureCoord3), NO_EXTRA },

-   { GL_MAP1_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map1TextureCoord4), NO_EXTRA },

-   { GL_MAP1_VERTEX_3, CONTEXT_BOOL(Eval.Map1Vertex3), NO_EXTRA },

-   { GL_MAP1_VERTEX_4, CONTEXT_BOOL(Eval.Map1Vertex4), NO_EXTRA },

-   { GL_MAP2_COLOR_4, CONTEXT_BOOL(Eval.Map2Color4), NO_EXTRA },

-   { GL_MAP2_GRID_DOMAIN, LOC_CUSTOM, TYPE_FLOAT_4, 0, NO_EXTRA },

-   { GL_MAP2_GRID_SEGMENTS, CONTEXT_INT2(Eval.MapGrid2un), NO_EXTRA },

-   { GL_MAP2_INDEX, CONTEXT_BOOL(Eval.Map2Index), NO_EXTRA },

-   { GL_MAP2_NORMAL, CONTEXT_BOOL(Eval.Map2Normal), NO_EXTRA },

-   { GL_MAP2_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map2TextureCoord1), NO_EXTRA },

-   { GL_MAP2_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map2TextureCoord2), NO_EXTRA },

-   { GL_MAP2_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map2TextureCoord3), NO_EXTRA },

-   { GL_MAP2_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map2TextureCoord4), NO_EXTRA },

-   { GL_MAP2_VERTEX_3, CONTEXT_BOOL(Eval.Map2Vertex3), NO_EXTRA },

-   { GL_MAP2_VERTEX_4, CONTEXT_BOOL(Eval.Map2Vertex4), NO_EXTRA },

-   { GL_MAP_COLOR, CONTEXT_BOOL(Pixel.MapColorFlag), NO_EXTRA },

-   { GL_MAP_STENCIL, CONTEXT_BOOL(Pixel.MapStencilFlag), NO_EXTRA },

-   { GL_MAX_ATTRIB_STACK_DEPTH, CONST(MAX_ATTRIB_STACK_DEPTH), NO_EXTRA },

-   { GL_MAX_CLIENT_ATTRIB_STACK_DEPTH, CONST(MAX_CLIENT_ATTRIB_STACK_DEPTH), NO_EXTRA },

-

-   { GL_MAX_EVAL_ORDER, CONST(MAX_EVAL_ORDER), NO_EXTRA },

-   { GL_MAX_LIST_NESTING, CONST(MAX_LIST_NESTING), NO_EXTRA },

-   { GL_MAX_NAME_STACK_DEPTH, CONST(MAX_NAME_STACK_DEPTH), NO_EXTRA },

-   { GL_MAX_PIXEL_MAP_TABLE, CONST(MAX_PIXEL_MAP_TABLE), NO_EXTRA },

-   { GL_NAME_STACK_DEPTH, CONTEXT_INT(Select.NameStackDepth), NO_EXTRA },

-   { GL_PACK_LSB_FIRST, CONTEXT_BOOL(Pack.LsbFirst), NO_EXTRA },

-   { GL_PACK_ROW_LENGTH, CONTEXT_INT(Pack.RowLength), NO_EXTRA },

-   { GL_PACK_SKIP_PIXELS, CONTEXT_INT(Pack.SkipPixels), NO_EXTRA },

-   { GL_PACK_SKIP_ROWS, CONTEXT_INT(Pack.SkipRows), NO_EXTRA },

-   { GL_PACK_SWAP_BYTES, CONTEXT_BOOL(Pack.SwapBytes), NO_EXTRA },

-   { GL_PACK_IMAGE_HEIGHT_EXT, CONTEXT_INT(Pack.ImageHeight), NO_EXTRA },

-   { GL_PACK_INVERT_MESA, CONTEXT_BOOL(Pack.Invert), NO_EXTRA },

-   { GL_PIXEL_MAP_A_TO_A_SIZE, CONTEXT_INT(PixelMaps.AtoA.Size), NO_EXTRA },

-   { GL_PIXEL_MAP_B_TO_B_SIZE, CONTEXT_INT(PixelMaps.BtoB.Size), NO_EXTRA },

-   { GL_PIXEL_MAP_G_TO_G_SIZE, CONTEXT_INT(PixelMaps.GtoG.Size), NO_EXTRA },

-   { GL_PIXEL_MAP_I_TO_A_SIZE, CONTEXT_INT(PixelMaps.ItoA.Size), NO_EXTRA },

-   { GL_PIXEL_MAP_I_TO_B_SIZE, CONTEXT_INT(PixelMaps.ItoB.Size), NO_EXTRA },

-   { GL_PIXEL_MAP_I_TO_G_SIZE, CONTEXT_INT(PixelMaps.ItoG.Size), NO_EXTRA },

-   { GL_PIXEL_MAP_I_TO_I_SIZE, CONTEXT_INT(PixelMaps.ItoI.Size), NO_EXTRA },

-   { GL_PIXEL_MAP_I_TO_R_SIZE, CONTEXT_INT(PixelMaps.ItoR.Size), NO_EXTRA },

-   { GL_PIXEL_MAP_R_TO_R_SIZE, CONTEXT_INT(PixelMaps.RtoR.Size), NO_EXTRA },

-   { GL_PIXEL_MAP_S_TO_S_SIZE, CONTEXT_INT(PixelMaps.StoS.Size), NO_EXTRA },

-   { GL_POINT_SIZE_GRANULARITY, CONTEXT_FLOAT(Const.PointSizeGranularity), NO_EXTRA },

-   { GL_POLYGON_MODE, CONTEXT_ENUM2(Polygon.FrontMode), NO_EXTRA },

-   { GL_POLYGON_OFFSET_BIAS_EXT, CONTEXT_FLOAT(Polygon.OffsetUnits), NO_EXTRA },

-   { GL_POLYGON_OFFSET_POINT, CONTEXT_BOOL(Polygon.OffsetPoint), NO_EXTRA },

-   { GL_POLYGON_OFFSET_LINE, CONTEXT_BOOL(Polygon.OffsetLine), NO_EXTRA },

-   { GL_POLYGON_SMOOTH, CONTEXT_BOOL(Polygon.SmoothFlag), NO_EXTRA },

-   { GL_POLYGON_SMOOTH_HINT, CONTEXT_ENUM(Hint.PolygonSmooth), NO_EXTRA },

-   { GL_POLYGON_STIPPLE, CONTEXT_BOOL(Polygon.StippleFlag), NO_EXTRA },

-   { GL_READ_BUFFER, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },

-   { GL_RED_BIAS, CONTEXT_FLOAT(Pixel.RedBias), NO_EXTRA },

-   { GL_RED_SCALE, CONTEXT_FLOAT(Pixel.RedScale), NO_EXTRA },

-   { GL_RENDER_MODE, CONTEXT_ENUM(RenderMode), NO_EXTRA },

-   { GL_RGBA_MODE, CONST(1), NO_EXTRA },

-   { GL_SELECTION_BUFFER_SIZE, CONTEXT_INT(Select.BufferSize), NO_EXTRA },

-   { GL_SHARED_TEXTURE_PALETTE_EXT, CONTEXT_BOOL(Texture.SharedPalette), NO_EXTRA },

-

-   { GL_STEREO, BUFFER_INT(Visual.stereoMode), NO_EXTRA },

-

-   { GL_TEXTURE_1D, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },

-   { GL_TEXTURE_3D, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },

-   { GL_TEXTURE_1D_ARRAY_EXT, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },

-   { GL_TEXTURE_2D_ARRAY_EXT, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },

-

-   { GL_TEXTURE_BINDING_1D, LOC_CUSTOM, TYPE_INT, TEXTURE_1D_INDEX, NO_EXTRA },

-   { GL_TEXTURE_BINDING_1D_ARRAY, LOC_CUSTOM, TYPE_INT,

-     TEXTURE_1D_ARRAY_INDEX, extra_MESA_texture_array },

-   { GL_TEXTURE_BINDING_2D_ARRAY, LOC_CUSTOM, TYPE_INT,

-     TEXTURE_1D_ARRAY_INDEX, extra_MESA_texture_array },

-   { GL_MAX_ARRAY_TEXTURE_LAYERS_EXT,

-     CONTEXT_INT(Const.MaxArrayTextureLayers), extra_MESA_texture_array },

-

-   { GL_TEXTURE_GEN_S, LOC_TEXUNIT, TYPE_BIT_0,

-     offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },

-   { GL_TEXTURE_GEN_T, LOC_TEXUNIT, TYPE_BIT_1,

-     offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },

-   { GL_TEXTURE_GEN_R, LOC_TEXUNIT, TYPE_BIT_2,

-     offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },

-   { GL_TEXTURE_GEN_Q, LOC_TEXUNIT, TYPE_BIT_3,

-     offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },

-   { GL_UNPACK_LSB_FIRST, CONTEXT_BOOL(Unpack.LsbFirst), NO_EXTRA },

-   { GL_UNPACK_ROW_LENGTH, CONTEXT_INT(Unpack.RowLength), NO_EXTRA },

-   { GL_UNPACK_SKIP_PIXELS, CONTEXT_INT(Unpack.SkipPixels), NO_EXTRA },

-   { GL_UNPACK_SKIP_ROWS, CONTEXT_INT(Unpack.SkipRows), NO_EXTRA },

-   { GL_UNPACK_SWAP_BYTES, CONTEXT_BOOL(Unpack.SwapBytes), NO_EXTRA },

-   { GL_UNPACK_SKIP_IMAGES_EXT, CONTEXT_INT(Unpack.SkipImages), NO_EXTRA },

-   { GL_UNPACK_IMAGE_HEIGHT_EXT, CONTEXT_INT(Unpack.ImageHeight), NO_EXTRA },

-   { GL_UNPACK_CLIENT_STORAGE_APPLE, CONTEXT_BOOL(Unpack.ClientStorage), NO_EXTRA },

-   { GL_ZOOM_X, CONTEXT_FLOAT(Pixel.ZoomX), NO_EXTRA },

-   { GL_ZOOM_Y, CONTEXT_FLOAT(Pixel.ZoomY), NO_EXTRA },

-

-   /* Vertex arrays */

-   { GL_VERTEX_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },

-   { GL_NORMAL_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },

-   { GL_COLOR_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },

-   { GL_INDEX_ARRAY, ARRAY_BOOL(Index.Enabled), NO_EXTRA },

-   { GL_INDEX_ARRAY_TYPE, ARRAY_ENUM(Index.Type), NO_EXTRA },

-   { GL_INDEX_ARRAY_STRIDE, ARRAY_INT(Index.Stride), NO_EXTRA },

-   { GL_INDEX_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },

-   { GL_TEXTURE_COORD_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },

-   { GL_EDGE_FLAG_ARRAY, ARRAY_BOOL(EdgeFlag.Enabled), NO_EXTRA },

-   { GL_EDGE_FLAG_ARRAY_STRIDE, ARRAY_INT(EdgeFlag.Stride), NO_EXTRA },

-   { GL_EDGE_FLAG_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },

-

-   /* GL_ARB_texture_compression */

-   { GL_TEXTURE_COMPRESSION_HINT_ARB, CONTEXT_INT(Hint.TextureCompression), NO_EXTRA },

-

-   /* GL_EXT_compiled_vertex_array */

-   { GL_ARRAY_ELEMENT_LOCK_FIRST_EXT, CONTEXT_INT(Array.LockFirst),

-     extra_EXT_compiled_vertex_array },

-   { GL_ARRAY_ELEMENT_LOCK_COUNT_EXT, CONTEXT_INT(Array.LockCount),

-     extra_EXT_compiled_vertex_array },

-

-   /* GL_ARB_transpose_matrix */

-   { GL_TRANSPOSE_MODELVIEW_MATRIX_ARB,

-     CONTEXT_MATRIX_T(ModelviewMatrixStack), NO_EXTRA },

-   { GL_TRANSPOSE_PROJECTION_MATRIX_ARB,

-     CONTEXT_MATRIX_T(ProjectionMatrixStack.Top), NO_EXTRA },

-   { GL_TRANSPOSE_TEXTURE_MATRIX_ARB, CONTEXT_MATRIX_T(TextureMatrixStack), NO_EXTRA },

-

-   /* GL_SGI_texture_color_table */

-   { GL_TEXTURE_COLOR_TABLE_SGI, LOC_TEXUNIT, TYPE_BOOLEAN,

-     offsetof(struct gl_texture_unit, ColorTableEnabled),

-     extra_SGI_texture_color_table },

-

-   /* GL_EXT_secondary_color */

-   { GL_COLOR_SUM_EXT, CONTEXT_BOOL(Fog.ColorSumEnabled),

-     extra_EXT_secondary_color_ARB_vertex_program },

-   { GL_CURRENT_SECONDARY_COLOR_EXT,

-     CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR1][0], TYPE_FLOATN_4),

-     extra_EXT_secondary_color_flush_current },

-   { GL_SECONDARY_COLOR_ARRAY_EXT, ARRAY_BOOL(SecondaryColor.Enabled),

-     extra_EXT_secondary_color },

-   { GL_SECONDARY_COLOR_ARRAY_TYPE_EXT, ARRAY_ENUM(SecondaryColor.Type),

-     extra_EXT_secondary_color },

-   { GL_SECONDARY_COLOR_ARRAY_STRIDE_EXT, ARRAY_INT(SecondaryColor.Stride),

-     extra_EXT_secondary_color },

-   { GL_SECONDARY_COLOR_ARRAY_SIZE_EXT, ARRAY_INT(SecondaryColor.Size),

-     extra_EXT_secondary_color },

-

-   /* GL_EXT_fog_coord */

-   { GL_CURRENT_FOG_COORDINATE_EXT,

-     CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_FOG][0]),

-     extra_EXT_fog_coord_flush_current },

-   { GL_FOG_COORDINATE_ARRAY_EXT, ARRAY_BOOL(FogCoord.Enabled),

-     extra_EXT_fog_coord },

-   { GL_FOG_COORDINATE_ARRAY_TYPE_EXT, ARRAY_ENUM(FogCoord.Type),

-     extra_EXT_fog_coord },

-   { GL_FOG_COORDINATE_ARRAY_STRIDE_EXT, ARRAY_INT(FogCoord.Stride),

-     extra_EXT_fog_coord },

-   { GL_FOG_COORDINATE_SOURCE_EXT, CONTEXT_ENUM(Fog.FogCoordinateSource),

-     extra_EXT_fog_coord },

-

-   /* GL_IBM_rasterpos_clip */

-   { GL_RASTER_POSITION_UNCLIPPED_IBM,

-     CONTEXT_BOOL(Transform.RasterPositionUnclipped),

-     extra_IBM_rasterpos_clip },

-

-   /* GL_NV_point_sprite */

-   { GL_POINT_SPRITE_R_MODE_NV,

-     CONTEXT_ENUM(Point.SpriteRMode), extra_NV_point_sprite },

-   { GL_POINT_SPRITE_COORD_ORIGIN, CONTEXT_ENUM(Point.SpriteOrigin),

-     extra_NV_point_sprite_ARB_point_sprite },

-

-   /* GL_NV_vertex_program */

-   { GL_VERTEX_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY0_NV, ARRAY_BOOL(VertexAttrib[0].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY1_NV, ARRAY_BOOL(VertexAttrib[1].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY2_NV, ARRAY_BOOL(VertexAttrib[2].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY3_NV, ARRAY_BOOL(VertexAttrib[3].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY4_NV, ARRAY_BOOL(VertexAttrib[4].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY5_NV, ARRAY_BOOL(VertexAttrib[5].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY6_NV, ARRAY_BOOL(VertexAttrib[6].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY7_NV, ARRAY_BOOL(VertexAttrib[7].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY8_NV, ARRAY_BOOL(VertexAttrib[8].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY9_NV, ARRAY_BOOL(VertexAttrib[9].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY10_NV, ARRAY_BOOL(VertexAttrib[10].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY11_NV, ARRAY_BOOL(VertexAttrib[11].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY12_NV, ARRAY_BOOL(VertexAttrib[12].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY13_NV, ARRAY_BOOL(VertexAttrib[13].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY14_NV, ARRAY_BOOL(VertexAttrib[14].Enabled),

-     extra_NV_vertex_program },

-   { GL_VERTEX_ATTRIB_ARRAY15_NV, ARRAY_BOOL(VertexAttrib[15].Enabled),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB0_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[0]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB1_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[1]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB2_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[2]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB3_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[3]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB4_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[4]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB5_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[5]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB6_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[6]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB7_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[7]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB8_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[8]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB9_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[9]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB10_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[10]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB11_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[11]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB12_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[12]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB13_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[13]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB14_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[14]),

-     extra_NV_vertex_program },

-   { GL_MAP1_VERTEX_ATTRIB15_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[15]),

-     extra_NV_vertex_program },

-

-   /* GL_NV_fragment_program */

-   { GL_FRAGMENT_PROGRAM_NV, CONTEXT_BOOL(FragmentProgram.Enabled),

-     extra_NV_fragment_program },

-   { GL_FRAGMENT_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,

-     extra_NV_fragment_program },

-   { GL_MAX_FRAGMENT_PROGRAM_LOCAL_PARAMETERS_NV,

-     CONST(MAX_NV_FRAGMENT_PROGRAM_PARAMS),

-     extra_NV_fragment_program },

-

-   /* GL_NV_texture_rectangle */

-   { GL_TEXTURE_RECTANGLE_NV,

-     LOC_CUSTOM, TYPE_BOOLEAN, 0, extra_NV_texture_rectangle },

-   { GL_TEXTURE_BINDING_RECTANGLE_NV,

-     LOC_CUSTOM, TYPE_INT, TEXTURE_RECT_INDEX, extra_NV_texture_rectangle },

-   { GL_MAX_RECTANGLE_TEXTURE_SIZE_NV,

-     CONTEXT_INT(Const.MaxTextureRectSize), extra_NV_texture_rectangle },

-

-   /* GL_EXT_stencil_two_side */

-   { GL_STENCIL_TEST_TWO_SIDE_EXT, CONTEXT_BOOL(Stencil.TestTwoSide),

-	 extra_EXT_stencil_two_side },

-   { GL_ACTIVE_STENCIL_FACE_EXT, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },

-

-   /* GL_NV_light_max_exponent */

-   { GL_MAX_SHININESS_NV, CONTEXT_FLOAT(Const.MaxShininess),

-     extra_NV_light_max_exponent },

-   { GL_MAX_SPOT_EXPONENT_NV, CONTEXT_FLOAT(Const.MaxSpotExponent),

-     extra_NV_light_max_exponent },

-     

-   /* GL_NV_primitive_restart */

-   { GL_PRIMITIVE_RESTART_NV, CONTEXT_BOOL(Array.PrimitiveRestart),

-     extra_NV_primitive_restart },

-   { GL_PRIMITIVE_RESTART_INDEX_NV, CONTEXT_INT(Array.RestartIndex),

-     extra_NV_primitive_restart },

- 

-   /* GL_ARB_vertex_buffer_object */

-   { GL_INDEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,

-     offsetof(struct gl_array_object, Index.BufferObj), NO_EXTRA },

-   { GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,

-     offsetof(struct gl_array_object, EdgeFlag.BufferObj), NO_EXTRA },

-   { GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,

-     offsetof(struct gl_array_object, SecondaryColor.BufferObj), NO_EXTRA },

-   { GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,

-     offsetof(struct gl_array_object, FogCoord.BufferObj), NO_EXTRA },

-

-   /* GL_EXT_pixel_buffer_object */

-   { GL_PIXEL_PACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,

-     extra_EXT_pixel_buffer_object },

-   { GL_PIXEL_UNPACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,

-     extra_EXT_pixel_buffer_object },

-

-   /* GL_ARB_vertex_program */

-   { GL_VERTEX_PROGRAM_ARB, /* == GL_VERTEX_PROGRAM_NV */

-     CONTEXT_BOOL(VertexProgram.Enabled),

-     extra_ARB_vertex_program_NV_vertex_program },

-   { GL_VERTEX_PROGRAM_POINT_SIZE_ARB, /* == GL_VERTEX_PROGRAM_POINT_SIZE_NV*/

-     CONTEXT_BOOL(VertexProgram.PointSizeEnabled),

-     extra_ARB_vertex_program_NV_vertex_program },

-   { GL_VERTEX_PROGRAM_TWO_SIDE_ARB, /* == GL_VERTEX_PROGRAM_TWO_SIDE_NV */

-     CONTEXT_BOOL(VertexProgram.TwoSideEnabled),

-     extra_ARB_vertex_program_NV_vertex_program },

-   { GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB, /* == GL_MAX_TRACK_MATRIX_STACK_DEPTH_NV */

-     CONTEXT_INT(Const.MaxProgramMatrixStackDepth),

-     extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },

-   { GL_MAX_PROGRAM_MATRICES_ARB, /* == GL_MAX_TRACK_MATRICES_NV */

-     CONTEXT_INT(Const.MaxProgramMatrices),

-     extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },

-   { GL_CURRENT_MATRIX_STACK_DEPTH_ARB, /* == GL_CURRENT_MATRIX_STACK_DEPTH_NV */

-     LOC_CUSTOM, TYPE_INT, 0,

-     extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },

-

-   { GL_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */

-     LOC_CUSTOM, TYPE_MATRIX, 0,

-     extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },

-   { GL_TRANSPOSE_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */

-     LOC_CUSTOM, TYPE_MATRIX, 0,

-     extra_ARB_vertex_program_ARB_fragment_program },

-

-   { GL_PROGRAM_ERROR_POSITION_ARB, /* == GL_PROGRAM_ERROR_POSITION_NV */

-     CONTEXT_INT(Program.ErrorPos),

-     extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },

-

-   /* GL_ARB_fragment_program */

-   { GL_FRAGMENT_PROGRAM_ARB, CONTEXT_BOOL(FragmentProgram.Enabled),

-     extra_ARB_fragment_program },

-

-   /* GL_EXT_depth_bounds_test */

-   { GL_DEPTH_BOUNDS_TEST_EXT, CONTEXT_BOOL(Depth.BoundsTest),

-     extra_EXT_depth_bounds_test },

-   { GL_DEPTH_BOUNDS_EXT, CONTEXT_FLOAT2(Depth.BoundsMin),

-     extra_EXT_depth_bounds_test },

-

-   /* GL_ARB_depth_clamp*/

-   { GL_DEPTH_CLAMP, CONTEXT_BOOL(Transform.DepthClamp),

-     extra_ARB_depth_clamp },

-

-   /* GL_ARB_draw_buffers */

-   { GL_DRAW_BUFFER0_ARB, BUFFER_ENUM(ColorDrawBuffer[0]), NO_EXTRA },

-   { GL_DRAW_BUFFER1_ARB, BUFFER_ENUM(ColorDrawBuffer[1]),

-     extra_valid_draw_buffer },

-   { GL_DRAW_BUFFER2_ARB, BUFFER_ENUM(ColorDrawBuffer[2]),

-     extra_valid_draw_buffer },

-   { GL_DRAW_BUFFER3_ARB, BUFFER_ENUM(ColorDrawBuffer[3]),

-     extra_valid_draw_buffer },

-   { GL_DRAW_BUFFER4_ARB, BUFFER_ENUM(ColorDrawBuffer[4]),

-     extra_valid_draw_buffer },

-   { GL_DRAW_BUFFER5_ARB, BUFFER_ENUM(ColorDrawBuffer[5]),

-     extra_valid_draw_buffer },

-   { GL_DRAW_BUFFER6_ARB, BUFFER_ENUM(ColorDrawBuffer[6]),

-     extra_valid_draw_buffer },

-   { GL_DRAW_BUFFER7_ARB, BUFFER_ENUM(ColorDrawBuffer[7]),

-     extra_valid_draw_buffer },

-

-   /* GL_ATI_fragment_shader */

-   { GL_NUM_FRAGMENT_REGISTERS_ATI, CONST(6), extra_ATI_fragment_shader },

-   { GL_NUM_FRAGMENT_CONSTANTS_ATI, CONST(8), extra_ATI_fragment_shader },

-   { GL_NUM_PASSES_ATI, CONST(2), extra_ATI_fragment_shader },

-   { GL_NUM_INSTRUCTIONS_PER_PASS_ATI, CONST(8), extra_ATI_fragment_shader },

-   { GL_NUM_INSTRUCTIONS_TOTAL_ATI, CONST(16), extra_ATI_fragment_shader },

-   { GL_COLOR_ALPHA_PAIRING_ATI, CONST(GL_TRUE), extra_ATI_fragment_shader },

-   { GL_NUM_LOOPBACK_COMPONENTS_ATI, CONST(3), extra_ATI_fragment_shader },

-   { GL_NUM_INPUT_INTERPOLATOR_COMPONENTS_ATI,

-     CONST(3), extra_ATI_fragment_shader },

-

-   /* GL_EXT_framebuffer_object */

-   { GL_MAX_COLOR_ATTACHMENTS_EXT, CONTEXT_INT(Const.MaxColorAttachments),

-     extra_EXT_framebuffer_object },

-   

-   /* GL_EXT_framebuffer_blit

-    * NOTE: GL_DRAW_FRAMEBUFFER_BINDING_EXT == GL_FRAMEBUFFER_BINDING_EXT */

-   { GL_READ_FRAMEBUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,

-     extra_EXT_framebuffer_blit },

-

-   /* GL_EXT_provoking_vertex */

-   { GL_PROVOKING_VERTEX_EXT,

-     CONTEXT_BOOL(Light.ProvokingVertex), extra_EXT_provoking_vertex },

-   { GL_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION_EXT,

-     CONTEXT_BOOL(Const.QuadsFollowProvokingVertexConvention),

-     extra_EXT_provoking_vertex },

-

-   /* GL_ARB_framebuffer_object */

-   { GL_MAX_SAMPLES, CONTEXT_INT(Const.MaxSamples),

-     extra_ARB_framebuffer_object_EXT_framebuffer_multisample },

-

-   /* GL_APPLE_vertex_array_object */

-   { GL_VERTEX_ARRAY_BINDING_APPLE, ARRAY_INT(Name),

-     extra_APPLE_vertex_array_object },

-

-   /* GL_ARB_seamless_cube_map */

-   { GL_TEXTURE_CUBE_MAP_SEAMLESS,

-     CONTEXT_BOOL(Texture.CubeMapSeamless), extra_ARB_seamless_cube_map },

-

-   /* GL_ARB_sync */

-   { GL_MAX_SERVER_WAIT_TIMEOUT,

-     CONTEXT_INT64(Const.MaxServerWaitTimeout), extra_ARB_sync },

-

-   /* GL_EXT_texture_integer */

-   { GL_RGBA_INTEGER_MODE_EXT, BUFFER_BOOL(_IntegerColor),

-     extra_EXT_texture_integer },

-

-   /* GL_EXT_transform_feedback */

-   { GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, LOC_CUSTOM, TYPE_INT, 0,

-     extra_EXT_transform_feedback },

-   { GL_RASTERIZER_DISCARD, CONTEXT_BOOL(TransformFeedback.RasterDiscard),

-     extra_EXT_transform_feedback },

-   { GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS,

-     CONTEXT_INT(Const.MaxTransformFeedbackInterleavedComponents),

-     extra_EXT_transform_feedback },

-   { GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS,

-     CONTEXT_INT(Const.MaxTransformFeedbackSeparateAttribs),

-     extra_EXT_transform_feedback },

-   { GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS,

-     CONTEXT_INT(Const.MaxTransformFeedbackSeparateComponents),

-     extra_EXT_transform_feedback },

-

-   /* GL_ARB_transform_feedback2 */

-   { GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED, LOC_CUSTOM, TYPE_BOOLEAN, 0,

-     extra_ARB_transform_feedback2 },

-   { GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE, LOC_CUSTOM, TYPE_BOOLEAN, 0,

-     extra_ARB_transform_feedback2 },

-   { GL_TRANSFORM_FEEDBACK_BINDING, LOC_CUSTOM, TYPE_INT, 0,

-     extra_ARB_transform_feedback2 },

-

-   /* GL_ARB_geometry_shader4 */

-   { GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_ARB,

-     CONTEXT_INT(Const.GeometryProgram.MaxGeometryTextureImageUnits),

-     extra_ARB_geometry_shader4 },

-   { GL_MAX_GEOMETRY_OUTPUT_VERTICES_ARB,

-     CONTEXT_INT(Const.GeometryProgram.MaxGeometryOutputVertices),

-     extra_ARB_geometry_shader4 },

-   { GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_ARB,

-     CONTEXT_INT(Const.GeometryProgram.MaxGeometryTotalOutputComponents),

-     extra_ARB_geometry_shader4 },

-   { GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_ARB,

-     CONTEXT_INT(Const.GeometryProgram.MaxGeometryUniformComponents),

-     extra_ARB_geometry_shader4 },

-   { GL_MAX_GEOMETRY_VARYING_COMPONENTS_ARB,

-     CONTEXT_INT(Const.GeometryProgram.MaxGeometryVaryingComponents),

-     extra_ARB_geometry_shader4 },

-   { GL_MAX_VERTEX_VARYING_COMPONENTS_ARB,

-     CONTEXT_INT(Const.GeometryProgram.MaxVertexVaryingComponents),

-     extra_ARB_geometry_shader4 },

-

-   /* GL_EXT_gpu_shader4 / GL 3.0 */

-   { GL_MIN_PROGRAM_TEXEL_OFFSET,

-     CONTEXT_INT(Const.MinProgramTexelOffset),

-     extra_EXT_gpu_shader4 },

-   { GL_MAX_PROGRAM_TEXEL_OFFSET,

-     CONTEXT_INT(Const.MaxProgramTexelOffset),

-     extra_EXT_gpu_shader4 },

-

-   /* GL 3.0 */

-   { GL_NUM_EXTENSIONS, LOC_CUSTOM, TYPE_INT, 0, extra_version_30 },

-   { GL_MAJOR_VERSION, CONTEXT_INT(VersionMajor), extra_version_30 },

-   { GL_MINOR_VERSION, CONTEXT_INT(VersionMinor), extra_version_30  },

-   { GL_CONTEXT_FLAGS, CONTEXT_INT(Const.ContextFlags), extra_version_30  },

-

-   /* GL3.0 / GL_EXT_framebuffer_sRGB */

-   { GL_FRAMEBUFFER_SRGB_EXT, CONTEXT_BOOL(Color.sRGBEnabled), extra_EXT_framebuffer_sRGB },

-   { GL_FRAMEBUFFER_SRGB_CAPABLE_EXT, BUFFER_INT(Visual.sRGBCapable), extra_EXT_framebuffer_sRGB },

-

-   /* GL 3.1 */

-   /* NOTE: different enum values for GL_PRIMITIVE_RESTART_NV

-    * vs. GL_PRIMITIVE_RESTART!

-    */

-   { GL_PRIMITIVE_RESTART, CONTEXT_BOOL(Array.PrimitiveRestart),

-     extra_version_31 },

-   { GL_PRIMITIVE_RESTART_INDEX, CONTEXT_INT(Array.RestartIndex),

-     extra_version_31 },

- 

-

-   /* GL 3.2 */

-   { GL_CONTEXT_PROFILE_MASK, CONTEXT_INT(Const.ProfileMask),

-     extra_version_32 },

-#endif /* FEATURE_GL */

-};

-

-/* All we need now is a way to look up the value struct from the enum.

- * The code generated by gcc for the old generated big switch

- * statement is a big, balanced, open coded if/else tree, essentially

- * an unrolled binary search.  It would be natural to sort the new

- * enum table and use bsearch(), but we will use a read-only hash

- * table instead.  bsearch() has a nice guaranteed worst case

- * performance, but we're also guaranteed to hit that worst case

- * (log2(n) iterations) for about half the enums.  Instead, using an

- * open addressing hash table, we can find the enum on the first try

- * for 80% of the enums, 1 collision for 10% and never more than 5

- * collisions for any enum (typical numbers).  And the code is very

- * simple, even though it feels a little magic. */

-

-static unsigned short table[1024];

-static const int prime_factor = 89, prime_step = 281;

-

-#ifdef GET_DEBUG

-static void

-print_table_stats(void)

-{

-   int i, j, collisions[11], count, hash, mask;

-   const struct value_desc *d;

-

-   count = 0;

-   mask = Elements(table) - 1;

-   memset(collisions, 0, sizeof collisions);

-

-   for (i = 0; i < Elements(table); i++) {

-      if (!table[i])

-	 continue;

-      count++;

-      d = &values[table[i]];

-      hash = (d->pname * prime_factor);

-      j = 0;

-      while (1) {

-	 if (values[table[hash & mask]].pname == d->pname)

-	    break;

-	 hash += prime_step;

-	 j++;

-      }

-

-      if (j < 10)

-	 collisions[j]++;

-      else

-	 collisions[10]++;

-   }

-

-   printf("number of enums: %d (total %d)\n", count, Elements(values));

-   for (i = 0; i < Elements(collisions) - 1; i++)

-      if (collisions[i] > 0)

-	 printf("  %d enums with %d %scollisions\n",

-		collisions[i], i, i == 10 ? "or more " : "");

-}

-#endif

-

-/**

- * Initialize the enum hash for a given API 

- *

- * This is called from one_time_init() to insert the enum values that

- * are valid for the API in question into the enum hash table.

- *

- * \param the current context, for determining the API in question

- */

-void _mesa_init_get_hash(struct gl_context *ctx)

-{

-   int i, hash, index, mask;

-   int api_mask = 0, api_bit;

-

-   mask = Elements(table) - 1;

-   api_bit = 1 << ctx->API;

-

-   for (i = 0; i < Elements(values); i++) {

-      if (values[i].type == TYPE_API_MASK) {

-	 api_mask = values[i].offset;

-	 continue;

-      }

-      if (!(api_mask & api_bit))

-	 continue;

-

-      hash = (values[i].pname * prime_factor) & mask;

-      while (1) {

-	 index = hash & mask;

-	 if (!table[index]) {

-	    table[index] = i;

-	    break;

-	 }

-	 hash += prime_step;

-      }

-   }

-

-#ifdef GET_DEBUG

-   print_table_stats();

-#endif

-}

-

-/**

- * Handle irregular enums

- *

- * Some values don't conform to the "well-known type at context

- * pointer + offset" pattern, so we have this function to catch all

- * the corner cases.  Typically, it's a computed value or a one-off

- * pointer to a custom struct or something.

- *

- * In this case we can't return a pointer to the value, so we'll have

- * to use the temporary variable 'v' declared back in the calling

- * glGet*v() function to store the result.

- *

- * \param ctx the current context

- * \param d the struct value_desc that describes the enum

- * \param v pointer to the tmp declared in the calling glGet*v() function

- */

-static void

-find_custom_value(struct gl_context *ctx, const struct value_desc *d, union value *v)

-{

-   struct gl_buffer_object *buffer_obj;

-   struct gl_client_array *array;

-   GLuint unit, *p;

-

-   switch (d->pname) {

-   case GL_TEXTURE_1D:

-   case GL_TEXTURE_2D:

-   case GL_TEXTURE_3D:

-   case GL_TEXTURE_1D_ARRAY_EXT:

-   case GL_TEXTURE_2D_ARRAY_EXT:

-   case GL_TEXTURE_CUBE_MAP_ARB:

-   case GL_TEXTURE_RECTANGLE_NV:

-      v->value_bool = _mesa_IsEnabled(d->pname);

-      break;

-

-   case GL_LINE_STIPPLE_PATTERN:

-      /* This is the only GLushort, special case it here by promoting

-       * to an int rather than introducing a new type. */

-      v->value_int = ctx->Line.StipplePattern;

-      break;

-

-   case GL_CURRENT_RASTER_TEXTURE_COORDS:

-      unit = ctx->Texture.CurrentUnit;

-      v->value_float_4[0] = ctx->Current.RasterTexCoords[unit][0];

-      v->value_float_4[1] = ctx->Current.RasterTexCoords[unit][1];

-      v->value_float_4[2] = ctx->Current.RasterTexCoords[unit][2];

-      v->value_float_4[3] = ctx->Current.RasterTexCoords[unit][3];

-      break;

-

-   case GL_CURRENT_TEXTURE_COORDS:

-      unit = ctx->Texture.CurrentUnit;

-      v->value_float_4[0] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][0];

-      v->value_float_4[1] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][1];

-      v->value_float_4[2] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2];

-      v->value_float_4[3] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3];

-      break;

-

-   case GL_COLOR_WRITEMASK:

-      v->value_int_4[0] = ctx->Color.ColorMask[0][RCOMP] ? 1 : 0;

-      v->value_int_4[1] = ctx->Color.ColorMask[0][GCOMP] ? 1 : 0;

-      v->value_int_4[2] = ctx->Color.ColorMask[0][BCOMP] ? 1 : 0;

-      v->value_int_4[3] = ctx->Color.ColorMask[0][ACOMP] ? 1 : 0;

-      break;

-

-   case GL_EDGE_FLAG:

-      v->value_bool = ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0] == 1.0;

-      break;

-

-   case GL_READ_BUFFER:

-      v->value_enum = ctx->ReadBuffer->ColorReadBuffer;

-      break;

-

-   case GL_MAP2_GRID_DOMAIN:

-      v->value_float_4[0] = ctx->Eval.MapGrid2u1;

-      v->value_float_4[1] = ctx->Eval.MapGrid2u2;

-      v->value_float_4[2] = ctx->Eval.MapGrid2v1;

-      v->value_float_4[3] = ctx->Eval.MapGrid2v2;

-      break;

-

-   case GL_TEXTURE_STACK_DEPTH:

-      unit = ctx->Texture.CurrentUnit;

-      v->value_int = ctx->TextureMatrixStack[unit].Depth + 1;

-      break;

-   case GL_TEXTURE_MATRIX:

-      unit = ctx->Texture.CurrentUnit;

-      v->value_matrix = ctx->TextureMatrixStack[unit].Top;

-      break;

-

-   case GL_TEXTURE_COORD_ARRAY:

-   case GL_TEXTURE_COORD_ARRAY_SIZE:

-   case GL_TEXTURE_COORD_ARRAY_TYPE:

-   case GL_TEXTURE_COORD_ARRAY_STRIDE:

-      array = &ctx->Array.ArrayObj->TexCoord[ctx->Array.ActiveTexture];

-      v->value_int = *(GLuint *) ((char *) array + d->offset);

-      break;

-

-   case GL_ACTIVE_TEXTURE_ARB:

-      v->value_int = GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit;

-      break;

-   case GL_CLIENT_ACTIVE_TEXTURE_ARB:

-      v->value_int = GL_TEXTURE0_ARB + ctx->Array.ActiveTexture;

-      break;

-

-   case GL_MODELVIEW_STACK_DEPTH:

-   case GL_PROJECTION_STACK_DEPTH:

-      v->value_int = *(GLint *) ((char *) ctx + d->offset) + 1;

-      break;

-

-   case GL_MAX_TEXTURE_SIZE:

-   case GL_MAX_3D_TEXTURE_SIZE:

-   case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:

-      p = (GLuint *) ((char *) ctx + d->offset);

-      v->value_int = 1 << (*p - 1);

-      break;

-

-   case GL_SCISSOR_BOX:

-      v->value_int_4[0] = ctx->Scissor.X;

-      v->value_int_4[1] = ctx->Scissor.Y;

-      v->value_int_4[2] = ctx->Scissor.Width;

-      v->value_int_4[3] = ctx->Scissor.Height;

-      break;

-

-   case GL_LIST_INDEX:

-      v->value_int =

-	 ctx->ListState.CurrentList ? ctx->ListState.CurrentList->Name : 0;

-      break;

-   case GL_LIST_MODE:

-      if (!ctx->CompileFlag)

-	 v->value_enum = 0;

-      else if (ctx->ExecuteFlag)

-	 v->value_enum = GL_COMPILE_AND_EXECUTE;

-      else

-	 v->value_enum = GL_COMPILE;

-      break;

-

-   case GL_VIEWPORT:

-      v->value_int_4[0] = ctx->Viewport.X;

-      v->value_int_4[1] = ctx->Viewport.Y;

-      v->value_int_4[2] = ctx->Viewport.Width;

-      v->value_int_4[3] = ctx->Viewport.Height;

-      break;

-

-   case GL_ACTIVE_STENCIL_FACE_EXT:

-      v->value_enum = ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT;

-      break;

-

-   case GL_STENCIL_FAIL:

-      v->value_enum = ctx->Stencil.FailFunc[ctx->Stencil.ActiveFace];

-      break;

-   case GL_STENCIL_FUNC:

-      v->value_enum = ctx->Stencil.Function[ctx->Stencil.ActiveFace];

-      break;

-   case GL_STENCIL_PASS_DEPTH_FAIL:

-      v->value_enum = ctx->Stencil.ZFailFunc[ctx->Stencil.ActiveFace];

-      break;

-   case GL_STENCIL_PASS_DEPTH_PASS:

-      v->value_enum = ctx->Stencil.ZPassFunc[ctx->Stencil.ActiveFace];

-      break;

-   case GL_STENCIL_REF:

-      v->value_int = ctx->Stencil.Ref[ctx->Stencil.ActiveFace];

-      break;

-   case GL_STENCIL_VALUE_MASK:

-      v->value_int = ctx->Stencil.ValueMask[ctx->Stencil.ActiveFace];

-      break;

-   case GL_STENCIL_WRITEMASK:

-      v->value_int = ctx->Stencil.WriteMask[ctx->Stencil.ActiveFace];

-      break;

-

-   case GL_NUM_EXTENSIONS:

-      v->value_int = _mesa_get_extension_count(ctx);

-      break;

-

-   case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:

-      v->value_int = _mesa_get_color_read_type(ctx);

-      break;

-   case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:

-      v->value_int = _mesa_get_color_read_format(ctx);

-      break;

-

-   case GL_CURRENT_MATRIX_STACK_DEPTH_ARB:

-      v->value_int = ctx->CurrentStack->Depth + 1;

-      break;

-   case GL_CURRENT_MATRIX_ARB:

-   case GL_TRANSPOSE_CURRENT_MATRIX_ARB:

-      v->value_matrix = ctx->CurrentStack->Top;

-      break;

-

-   case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:

-      v->value_int = _mesa_get_compressed_formats(ctx, NULL, GL_FALSE);

-      break;

-   case GL_COMPRESSED_TEXTURE_FORMATS_ARB:

-      v->value_int_n.n = 

-	 _mesa_get_compressed_formats(ctx, v->value_int_n.ints, GL_FALSE);

-      ASSERT(v->value_int_n.n <= 100);

-      break;

-

-   case GL_MAX_VARYING_FLOATS_ARB:

-      v->value_int = ctx->Const.MaxVarying * 4;

-      break;

-

-   /* Various object names */

-

-   case GL_TEXTURE_BINDING_1D:

-   case GL_TEXTURE_BINDING_2D:

-   case GL_TEXTURE_BINDING_3D:

-   case GL_TEXTURE_BINDING_1D_ARRAY_EXT:

-   case GL_TEXTURE_BINDING_2D_ARRAY_EXT:

-   case GL_TEXTURE_BINDING_CUBE_MAP_ARB:

-   case GL_TEXTURE_BINDING_RECTANGLE_NV:

-      unit = ctx->Texture.CurrentUnit;

-      v->value_int =

-	 ctx->Texture.Unit[unit].CurrentTex[d->offset]->Name;

-      break;

-

-   /* GL_ARB_vertex_buffer_object */

-   case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB:

-   case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB:

-   case GL_COLOR_ARRAY_BUFFER_BINDING_ARB:

-   case GL_INDEX_ARRAY_BUFFER_BINDING_ARB:

-   case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB:

-   case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB:

-   case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB:

-      buffer_obj = (struct gl_buffer_object *)

-	 ((char *) ctx->Array.ArrayObj + d->offset);

-      v->value_int = buffer_obj->Name;

-      break;

-   case GL_ARRAY_BUFFER_BINDING_ARB:

-      v->value_int = ctx->Array.ArrayBufferObj->Name;

-      break;

-   case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:

-      v->value_int =

-	 ctx->Array.ArrayObj->TexCoord[ctx->Array.ActiveTexture].BufferObj->Name;

-      break;

-   case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:

-      v->value_int = ctx->Array.ElementArrayBufferObj->Name;

-      break;

-

-   /* ARB_copy_buffer */

-   case GL_COPY_READ_BUFFER:

-      v->value_int = ctx->CopyReadBuffer->Name;

-      break;

-   case GL_COPY_WRITE_BUFFER:

-      v->value_int = ctx->CopyWriteBuffer->Name;

-      break;

-

-   case GL_FRAGMENT_PROGRAM_BINDING_NV:

-      v->value_int = 

-	 ctx->FragmentProgram.Current ? ctx->FragmentProgram.Current->Base.Id : 0;

-      break;

-   case GL_VERTEX_PROGRAM_BINDING_NV:

-      v->value_int =

-	 ctx->VertexProgram.Current ? ctx->VertexProgram.Current->Base.Id : 0;

-      break;

-   case GL_PIXEL_PACK_BUFFER_BINDING_EXT:

-      v->value_int = ctx->Pack.BufferObj->Name;

-      break;

-   case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:

-      v->value_int = ctx->Unpack.BufferObj->Name;

-      break;

-   case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:

-      v->value_int = ctx->TransformFeedback.CurrentBuffer->Name;

-      break;

-   case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED:

-      v->value_int = ctx->TransformFeedback.CurrentObject->Paused;

-      break;

-   case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE:

-      v->value_int = ctx->TransformFeedback.CurrentObject->Active;

-      break;

-   case GL_TRANSFORM_FEEDBACK_BINDING:

-      v->value_int = ctx->TransformFeedback.CurrentObject->Name;

-      break;

-   case GL_CURRENT_PROGRAM:

-      v->value_int =

-	 ctx->Shader.ActiveProgram ? ctx->Shader.ActiveProgram->Name : 0;

-      break;

-   case GL_READ_FRAMEBUFFER_BINDING_EXT:

-      v->value_int = ctx->ReadBuffer->Name;

-      break;

-   case GL_RENDERBUFFER_BINDING_EXT:

-      v->value_int =

-	 ctx->CurrentRenderbuffer ? ctx->CurrentRenderbuffer->Name : 0;

-      break;

-   case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:

-      v->value_int = ctx->Array.ArrayObj->PointSize.BufferObj->Name;

-      break;

-

-   case GL_MAX_VERTEX_UNIFORM_VECTORS:

-      v->value_int = ctx->Const.VertexProgram.MaxUniformComponents / 4;

-      break;

-

-   case GL_MAX_FRAGMENT_UNIFORM_VECTORS:

-      v->value_int = ctx->Const.FragmentProgram.MaxUniformComponents / 4;

-      break;

-   }   

-}

-

-/**

- * Check extra constraints on a struct value_desc descriptor

- *

- * If a struct value_desc has a non-NULL extra pointer, it means that

- * there are a number of extra constraints to check or actions to

- * perform.  The extras is just an integer array where each integer

- * encode different constraints or actions.

- *

- * \param ctx current context

- * \param func name of calling glGet*v() function for error reporting

- * \param d the struct value_desc that has the extra constraints

- *

- * \return GL_FALSE if one of the constraints was not satisfied,

- *     otherwise GL_TRUE.

- */

-static GLboolean

-check_extra(struct gl_context *ctx, const char *func, const struct value_desc *d)

-{

-   const GLuint version = ctx->VersionMajor * 10 + ctx->VersionMinor;

-   int total, enabled;

-   const int *e;

-

-   total = 0;

-   enabled = 0;

-   for (e = d->extra; *e != EXTRA_END; e++)

-      switch (*e) {

-      case EXTRA_VERSION_30:

-	 if (version >= 30) {

-	    total++;

-	    enabled++;

-	 }

-	 break;

-      case EXTRA_VERSION_31:

-	 if (version >= 31) {

-	    total++;

-	    enabled++;

-	 }

-	 break;

-      case EXTRA_VERSION_32:

-	 if (version >= 32) {

-	    total++;

-	    enabled++;

-	 }

-	 break;

-      case EXTRA_VERSION_ES2:

-	 if (ctx->API == API_OPENGLES2) {

-	    total++;

-	    enabled++;

-	 }

-	 break;

-      case EXTRA_NEW_BUFFERS:

-	 if (ctx->NewState & _NEW_BUFFERS)

-	    _mesa_update_state(ctx);

-	 break;

-      case EXTRA_FLUSH_CURRENT:

-	 FLUSH_CURRENT(ctx, 0);

-	 break;

-      case EXTRA_VALID_DRAW_BUFFER:

-	 if (d->pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {

-	    _mesa_error(ctx, GL_INVALID_OPERATION, "%s(draw buffer %u)",

-			func, d->pname - GL_DRAW_BUFFER0_ARB);

-	    return GL_FALSE;

-	 }

-	 break;

-      case EXTRA_VALID_TEXTURE_UNIT:

-	 if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {

-	    _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture %u)",

-			func, ctx->Texture.CurrentUnit);

-	    return GL_FALSE;

-	 }

-	 break;

-      case EXTRA_END:

-	 break;

-      default: /* *e is a offset into the extension struct */

-	 total++;

-	 if (*(GLboolean *) ((char *) &ctx->Extensions + *e))

-	    enabled++;

-	 break;

-      }

-

-   if (total > 0 && enabled == 0) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,

-                  _mesa_lookup_enum_by_nr(d->pname));

-      return GL_FALSE;

-   }

-

-   return GL_TRUE;

-}

-

-static const struct value_desc error_value =

-   { 0, 0, TYPE_INVALID, NO_OFFSET, NO_EXTRA };

-

-/**

- * Find the struct value_desc corresponding to the enum 'pname'.

- * 

- * We hash the enum value to get an index into the 'table' array,

- * which holds the index in the 'values' array of struct value_desc.

- * Once we've found the entry, we do the extra checks, if any, then

- * look up the value and return a pointer to it.

- *

- * If the value has to be computed (for example, it's the result of a

- * function call or we need to add 1 to it), we use the tmp 'v' to

- * store the result.

- * 

- * \param func name of glGet*v() func for error reporting

- * \param pname the enum value we're looking up

- * \param p is were we return the pointer to the value

- * \param v a tmp union value variable in the calling glGet*v() function

- *

- * \return the struct value_desc corresponding to the enum or a struct

- *     value_desc of TYPE_INVALID if not found.  This lets the calling

- *     glGet*v() function jump right into a switch statement and

- *     handle errors there instead of having to check for NULL.

- */

-static const struct value_desc *

-find_value(const char *func, GLenum pname, void **p, union value *v)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   struct gl_texture_unit *unit;

-   int mask, hash;

-   const struct value_desc *d;

-

-   mask = Elements(table) - 1;

-   hash = (pname * prime_factor);

-   while (1) {

-      d = &values[table[hash & mask]];

-

-      /* If the enum isn't valid, the hash walk ends with index 0,

-       * which is the API mask entry at the beginning of values[]. */

-      if (unlikely(d->type == TYPE_API_MASK)) {

-	 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,

-                     _mesa_lookup_enum_by_nr(pname));

-	 return &error_value;

-      }

-

-      if (likely(d->pname == pname))

-	 break;

-

-      hash += prime_step;

-   }

-

-   if (unlikely(d->extra && !check_extra(ctx, func, d)))

-      return &error_value;

-

-   switch (d->location) {

-   case LOC_BUFFER:

-      *p = ((char *) ctx->DrawBuffer + d->offset);

-      return d;

-   case LOC_CONTEXT:

-      *p = ((char *) ctx + d->offset);

-      return d;

-   case LOC_ARRAY:

-      *p = ((char *) ctx->Array.ArrayObj + d->offset);

-      return d;

-   case LOC_TEXUNIT:

-      unit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];

-      *p = ((char *) unit + d->offset);

-      return d;

-   case LOC_CUSTOM:

-      find_custom_value(ctx, d, v);

-      *p = v;

-      return d;

-   default:

-      assert(0);

-      break;

-   }

-

-   /* silence warning */

-   return &error_value;

-}

-

-static const int transpose[] = {

-   0, 4,  8, 12,

-   1, 5,  9, 13,

-   2, 6, 10, 14,

-   3, 7, 11, 15

-};

-

-void GLAPIENTRY

-_mesa_GetBooleanv(GLenum pname, GLboolean *params)

-{

-   const struct value_desc *d;

-   union value v;

-   GLmatrix *m;

-   int shift, i;

-   void *p;

-

-   d = find_value("glGetBooleanv", pname, &p, &v);

-   switch (d->type) {

-   case TYPE_INVALID:

-      break;

-   case TYPE_CONST:

-      params[0] = INT_TO_BOOLEAN(d->offset);

-      break;

-

-   case TYPE_FLOAT_4:

-   case TYPE_FLOATN_4:

-      params[3] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[3]);

-   case TYPE_FLOAT_3:

-   case TYPE_FLOATN_3:

-      params[2] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[2]);

-   case TYPE_FLOAT_2:

-   case TYPE_FLOATN_2:

-      params[1] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[1]);

-   case TYPE_FLOAT:

-   case TYPE_FLOATN:

-      params[0] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[0]);

-      break;

-

-   case TYPE_DOUBLEN:

-      params[0] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[0]);

-      break;

-

-   case TYPE_INT_4:

-      params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);

-   case TYPE_INT_3:

-      params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);

-   case TYPE_INT_2:

-   case TYPE_ENUM_2:

-      params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);

-   case TYPE_INT:

-   case TYPE_ENUM:

-      params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);

-      break;

-

-   case TYPE_INT_N:

-      for (i = 0; i < v.value_int_n.n; i++)

-	 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);

-      break;

-

-   case TYPE_INT64:

-      params[0] = INT64_TO_BOOLEAN(((GLint64 *) p)[0]);

-      break;

-

-   case TYPE_BOOLEAN:

-      params[0] = ((GLboolean*) p)[0];

-      break;		

-

-   case TYPE_MATRIX:

-      m = *(GLmatrix **) p;

-      for (i = 0; i < 16; i++)

-	 params[i] = FLOAT_TO_BOOLEAN(m->m[i]);

-      break;

-

-   case TYPE_MATRIX_T:

-      m = *(GLmatrix **) p;

-      for (i = 0; i < 16; i++)

-	 params[i] = FLOAT_TO_BOOLEAN(m->m[transpose[i]]);

-      break;

-

-   case TYPE_BIT_0:

-   case TYPE_BIT_1:

-   case TYPE_BIT_2:

-   case TYPE_BIT_3:

-   case TYPE_BIT_4:

-   case TYPE_BIT_5:

-      shift = d->type - TYPE_BIT_0;

-      params[0] = (*(GLbitfield *) p >> shift) & 1;

-      break;

-   }

-}

-

-void GLAPIENTRY

-_mesa_GetFloatv(GLenum pname, GLfloat *params)

-{

-   const struct value_desc *d;

-   union value v;

-   GLmatrix *m;

-   int shift, i;

-   void *p;

-

-   d = find_value("glGetFloatv", pname, &p, &v);

-   switch (d->type) {

-   case TYPE_INVALID:

-      break;

-   case TYPE_CONST:

-      params[0] = (GLfloat) d->offset;

-      break;

-

-   case TYPE_FLOAT_4:

-   case TYPE_FLOATN_4:

-      params[3] = ((GLfloat *) p)[3];

-   case TYPE_FLOAT_3:

-   case TYPE_FLOATN_3:

-      params[2] = ((GLfloat *) p)[2];

-   case TYPE_FLOAT_2:

-   case TYPE_FLOATN_2:

-      params[1] = ((GLfloat *) p)[1];

-   case TYPE_FLOAT:

-   case TYPE_FLOATN:

-      params[0] = ((GLfloat *) p)[0];

-      break;

-

-   case TYPE_DOUBLEN:

-      params[0] = ((GLdouble *) p)[0];

-      break;

-

-   case TYPE_INT_4:

-      params[3] = (GLfloat) (((GLint *) p)[3]);

-   case TYPE_INT_3:

-      params[2] = (GLfloat) (((GLint *) p)[2]);

-   case TYPE_INT_2:

-   case TYPE_ENUM_2:

-      params[1] = (GLfloat) (((GLint *) p)[1]);

-   case TYPE_INT:

-   case TYPE_ENUM:

-      params[0] = (GLfloat) (((GLint *) p)[0]);

-      break;

-

-   case TYPE_INT_N:

-      for (i = 0; i < v.value_int_n.n; i++)

-	 params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);

-      break;

-

-   case TYPE_INT64:

-      params[0] = ((GLint64 *) p)[0];

-      break;

-

-   case TYPE_BOOLEAN:

-      params[0] = BOOLEAN_TO_FLOAT(*(GLboolean*) p);

-      break;		

-

-   case TYPE_MATRIX:

-      m = *(GLmatrix **) p;

-      for (i = 0; i < 16; i++)

-	 params[i] = m->m[i];

-      break;

-

-   case TYPE_MATRIX_T:

-      m = *(GLmatrix **) p;

-      for (i = 0; i < 16; i++)

-	 params[i] = m->m[transpose[i]];

-      break;

-

-   case TYPE_BIT_0:

-   case TYPE_BIT_1:

-   case TYPE_BIT_2:

-   case TYPE_BIT_3:

-   case TYPE_BIT_4:

-   case TYPE_BIT_5:

-      shift = d->type - TYPE_BIT_0;

-      params[0] = BOOLEAN_TO_FLOAT((*(GLbitfield *) p >> shift) & 1);

-      break;

-   }

-}

-

-void GLAPIENTRY

-_mesa_GetIntegerv(GLenum pname, GLint *params)

-{

-   const struct value_desc *d;

-   union value v;

-   GLmatrix *m;

-   int shift, i;

-   void *p;

-

-   d = find_value("glGetIntegerv", pname, &p, &v);

-   switch (d->type) {

-   case TYPE_INVALID:

-      break;

-   case TYPE_CONST:

-      params[0] = d->offset;

-      break;

-

-   case TYPE_FLOAT_4:

-      params[3] = IROUND(((GLfloat *) p)[3]);

-   case TYPE_FLOAT_3:

-      params[2] = IROUND(((GLfloat *) p)[2]);

-   case TYPE_FLOAT_2:

-      params[1] = IROUND(((GLfloat *) p)[1]);

-   case TYPE_FLOAT:

-      params[0] = IROUND(((GLfloat *) p)[0]);

-      break;

-

-   case TYPE_FLOATN_4:

-      params[3] = FLOAT_TO_INT(((GLfloat *) p)[3]);

-   case TYPE_FLOATN_3:

-      params[2] = FLOAT_TO_INT(((GLfloat *) p)[2]);

-   case TYPE_FLOATN_2:

-      params[1] = FLOAT_TO_INT(((GLfloat *) p)[1]);

-   case TYPE_FLOATN:

-      params[0] = FLOAT_TO_INT(((GLfloat *) p)[0]);

-      break;

-

-   case TYPE_DOUBLEN:

-      params[0] = FLOAT_TO_INT(((GLdouble *) p)[0]);

-      break;

-

-   case TYPE_INT_4:

-      params[3] = ((GLint *) p)[3];

-   case TYPE_INT_3:

-      params[2] = ((GLint *) p)[2];

-   case TYPE_INT_2:

-   case TYPE_ENUM_2:

-      params[1] = ((GLint *) p)[1];

-   case TYPE_INT:

-   case TYPE_ENUM:

-      params[0] = ((GLint *) p)[0];

-      break;

-

-   case TYPE_INT_N:

-      for (i = 0; i < v.value_int_n.n; i++)

-	 params[i] = v.value_int_n.ints[i];

-      break;

-

-   case TYPE_INT64:

-      params[0] = INT64_TO_INT(((GLint64 *) p)[0]);

-      break;

-

-   case TYPE_BOOLEAN:

-      params[0] = BOOLEAN_TO_INT(*(GLboolean*) p);

-      break;		

-

-   case TYPE_MATRIX:

-      m = *(GLmatrix **) p;

-      for (i = 0; i < 16; i++)

-	 params[i] = FLOAT_TO_INT(m->m[i]);

-      break;

-

-   case TYPE_MATRIX_T:

-      m = *(GLmatrix **) p;

-      for (i = 0; i < 16; i++)

-	 params[i] = FLOAT_TO_INT(m->m[transpose[i]]);

-      break;

-

-   case TYPE_BIT_0:

-   case TYPE_BIT_1:

-   case TYPE_BIT_2:

-   case TYPE_BIT_3:

-   case TYPE_BIT_4:

-   case TYPE_BIT_5:

-      shift = d->type - TYPE_BIT_0;

-      params[0] = (*(GLbitfield *) p >> shift) & 1;

-      break;

-   }

-}

-

-#if FEATURE_ARB_sync

-void GLAPIENTRY

-_mesa_GetInteger64v(GLenum pname, GLint64 *params)

-{

-   const struct value_desc *d;

-   union value v;

-   GLmatrix *m;

-   int shift, i;

-   void *p;

-

-   d = find_value("glGetInteger64v", pname, &p, &v);

-   switch (d->type) {

-   case TYPE_INVALID:

-      break;

-   case TYPE_CONST:

-      params[0] = d->offset;

-      break;

-

-   case TYPE_FLOAT_4:

-      params[3] = IROUND64(((GLfloat *) p)[3]);

-   case TYPE_FLOAT_3:

-      params[2] = IROUND64(((GLfloat *) p)[2]);

-   case TYPE_FLOAT_2:

-      params[1] = IROUND64(((GLfloat *) p)[1]);

-   case TYPE_FLOAT:

-      params[0] = IROUND64(((GLfloat *) p)[0]);

-      break;

-

-   case TYPE_FLOATN_4:

-      params[3] = FLOAT_TO_INT64(((GLfloat *) p)[3]);

-   case TYPE_FLOATN_3:

-      params[2] = FLOAT_TO_INT64(((GLfloat *) p)[2]);

-   case TYPE_FLOATN_2:

-      params[1] = FLOAT_TO_INT64(((GLfloat *) p)[1]);

-   case TYPE_FLOATN:

-      params[0] = FLOAT_TO_INT64(((GLfloat *) p)[0]);

-      break;

-

-   case TYPE_DOUBLEN:

-      params[0] = FLOAT_TO_INT64(((GLdouble *) p)[0]);

-      break;

-

-   case TYPE_INT_4:

-      params[3] = ((GLint *) p)[3];

-   case TYPE_INT_3:

-      params[2] = ((GLint *) p)[2];

-   case TYPE_INT_2:

-   case TYPE_ENUM_2:

-      params[1] = ((GLint *) p)[1];

-   case TYPE_INT:

-   case TYPE_ENUM:

-      params[0] = ((GLint *) p)[0];

-      break;

-

-   case TYPE_INT_N:

-      for (i = 0; i < v.value_int_n.n; i++)

-	 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);

-      break;

-

-   case TYPE_INT64:

-      params[0] = ((GLint64 *) p)[0];

-      break;

-

-   case TYPE_BOOLEAN:

-      params[0] = ((GLboolean*) p)[0];

-      break;		

-

-   case TYPE_MATRIX:

-      m = *(GLmatrix **) p;

-      for (i = 0; i < 16; i++)

-	 params[i] = FLOAT_TO_INT64(m->m[i]);

-      break;

-

-   case TYPE_MATRIX_T:

-      m = *(GLmatrix **) p;

-      for (i = 0; i < 16; i++)

-	 params[i] = FLOAT_TO_INT64(m->m[transpose[i]]);

-      break;

-

-   case TYPE_BIT_0:

-   case TYPE_BIT_1:

-   case TYPE_BIT_2:

-   case TYPE_BIT_3:

-   case TYPE_BIT_4:

-   case TYPE_BIT_5:

-      shift = d->type - TYPE_BIT_0;

-      params[0] = (*(GLbitfield *) p >> shift) & 1;

-      break;

-   }

-}

-#endif /* FEATURE_ARB_sync */

-

-void GLAPIENTRY

-_mesa_GetDoublev(GLenum pname, GLdouble *params)

-{

-   const struct value_desc *d;

-   union value v;

-   GLmatrix *m;

-   int shift, i;

-   void *p;

-

-   d = find_value("glGetDoublev", pname, &p, &v);

-   switch (d->type) {

-   case TYPE_INVALID:

-      break;

-   case TYPE_CONST:

-      params[0] = d->offset;

-      break;

-

-   case TYPE_FLOAT_4:

-   case TYPE_FLOATN_4:

-      params[3] = ((GLfloat *) p)[3];

-   case TYPE_FLOAT_3:

-   case TYPE_FLOATN_3:

-      params[2] = ((GLfloat *) p)[2];

-   case TYPE_FLOAT_2:

-   case TYPE_FLOATN_2:

-      params[1] = ((GLfloat *) p)[1];

-   case TYPE_FLOAT:

-   case TYPE_FLOATN:

-      params[0] = ((GLfloat *) p)[0];

-      break;

-

-   case TYPE_DOUBLEN:

-      params[0] = ((GLdouble *) p)[0];

-      break;

-

-   case TYPE_INT_4:

-      params[3] = ((GLint *) p)[3];

-   case TYPE_INT_3:

-      params[2] = ((GLint *) p)[2];

-   case TYPE_INT_2:

-   case TYPE_ENUM_2:

-      params[1] = ((GLint *) p)[1];

-   case TYPE_INT:

-   case TYPE_ENUM:

-      params[0] = ((GLint *) p)[0];

-      break;

-

-   case TYPE_INT_N:

-      for (i = 0; i < v.value_int_n.n; i++)

-	 params[i] = v.value_int_n.ints[i];

-      break;

-

-   case TYPE_INT64:

-      params[0] = ((GLint64 *) p)[0];

-      break;

-

-   case TYPE_BOOLEAN:

-      params[0] = *(GLboolean*) p;

-      break;		

-

-   case TYPE_MATRIX:

-      m = *(GLmatrix **) p;

-      for (i = 0; i < 16; i++)

-	 params[i] = m->m[i];

-      break;

-

-   case TYPE_MATRIX_T:

-      m = *(GLmatrix **) p;

-      for (i = 0; i < 16; i++)

-	 params[i] = m->m[transpose[i]];

-      break;

-

-   case TYPE_BIT_0:

-   case TYPE_BIT_1:

-   case TYPE_BIT_2:

-   case TYPE_BIT_3:

-   case TYPE_BIT_4:

-   case TYPE_BIT_5:

-      shift = d->type - TYPE_BIT_0;

-      params[0] = (*(GLbitfield *) p >> shift) & 1;

-      break;

-   }

-}

-

-static enum value_type

-find_value_indexed(const char *func, GLenum pname, int index, union value *v)

-{

-   GET_CURRENT_CONTEXT(ctx);

-

-   switch (pname) {

-

-   case GL_BLEND:

-      if (index >= ctx->Const.MaxDrawBuffers)

-	 goto invalid_value;

-      if (!ctx->Extensions.EXT_draw_buffers2)

-	 goto invalid_enum;

-      v->value_int = (ctx->Color.BlendEnabled >> index) & 1;

-      return TYPE_INT;

-

-   case GL_BLEND_SRC:

-      /* fall-through */

-   case GL_BLEND_SRC_RGB:

-      if (index >= ctx->Const.MaxDrawBuffers)

-	 goto invalid_value;

-      if (!ctx->Extensions.ARB_draw_buffers_blend)

-	 goto invalid_enum;

-      v->value_int = ctx->Color.Blend[index].SrcRGB;

-      return TYPE_INT;

-   case GL_BLEND_SRC_ALPHA:

-      if (index >= ctx->Const.MaxDrawBuffers)

-	 goto invalid_value;

-      if (!ctx->Extensions.ARB_draw_buffers_blend)

-	 goto invalid_enum;

-      v->value_int = ctx->Color.Blend[index].SrcA;

-      return TYPE_INT;

-   case GL_BLEND_DST:

-      /* fall-through */

-   case GL_BLEND_DST_RGB:

-      if (index >= ctx->Const.MaxDrawBuffers)

-	 goto invalid_value;

-      if (!ctx->Extensions.ARB_draw_buffers_blend)

-	 goto invalid_enum;

-      v->value_int = ctx->Color.Blend[index].DstRGB;

-      return TYPE_INT;

-   case GL_BLEND_DST_ALPHA:

-      if (index >= ctx->Const.MaxDrawBuffers)

-	 goto invalid_value;

-      if (!ctx->Extensions.ARB_draw_buffers_blend)

-	 goto invalid_enum;

-      v->value_int = ctx->Color.Blend[index].DstA;

-      return TYPE_INT;

-   case GL_BLEND_EQUATION_RGB:

-      if (index >= ctx->Const.MaxDrawBuffers)

-	 goto invalid_value;

-      if (!ctx->Extensions.ARB_draw_buffers_blend)

-	 goto invalid_enum;

-      v->value_int = ctx->Color.Blend[index].EquationRGB;

-      return TYPE_INT;

-   case GL_BLEND_EQUATION_ALPHA:

-      if (index >= ctx->Const.MaxDrawBuffers)

-	 goto invalid_value;

-      if (!ctx->Extensions.ARB_draw_buffers_blend)

-	 goto invalid_enum;

-      v->value_int = ctx->Color.Blend[index].EquationA;

-      return TYPE_INT;

-

-   case GL_COLOR_WRITEMASK:

-      if (index >= ctx->Const.MaxDrawBuffers)

-	 goto invalid_value;

-      if (!ctx->Extensions.EXT_draw_buffers2)

-	 goto invalid_enum;

-      v->value_int_4[0] = ctx->Color.ColorMask[index][RCOMP] ? 1 : 0;

-      v->value_int_4[1] = ctx->Color.ColorMask[index][GCOMP] ? 1 : 0;

-      v->value_int_4[2] = ctx->Color.ColorMask[index][BCOMP] ? 1 : 0;

-      v->value_int_4[3] = ctx->Color.ColorMask[index][ACOMP] ? 1 : 0;

-      return TYPE_INT_4;

-

-   case GL_TRANSFORM_FEEDBACK_BUFFER_START:

-      if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs)

-	 goto invalid_value;

-      if (!ctx->Extensions.EXT_transform_feedback)

-	 goto invalid_enum;

-      v->value_int64 = ctx->TransformFeedback.CurrentObject->Offset[index];

-      return TYPE_INT64;

-

-   case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:

-      if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs)

-	 goto invalid_value;

-      if (!ctx->Extensions.EXT_transform_feedback)

-	 goto invalid_enum;

-      v->value_int64 = ctx->TransformFeedback.CurrentObject->Size[index];

-      return TYPE_INT64;

-

-   case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:

-      if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs)

-	 goto invalid_value;

-      if (!ctx->Extensions.EXT_transform_feedback)

-	 goto invalid_enum;

-      v->value_int = ctx->TransformFeedback.CurrentObject->Buffers[index]->Name;

-      return TYPE_INT;

-   }

-

- invalid_enum:

-   _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,

-               _mesa_lookup_enum_by_nr(pname));

-   return TYPE_INVALID;

- invalid_value:

-   _mesa_error(ctx, GL_INVALID_VALUE, "%s(pname=%s)", func,

-               _mesa_lookup_enum_by_nr(pname));

-   return TYPE_INVALID;

-}

-

-void GLAPIENTRY

-_mesa_GetBooleanIndexedv( GLenum pname, GLuint index, GLboolean *params )

-{

-   union value v;

-   enum value_type type =

-      find_value_indexed("glGetBooleanIndexedv", pname, index, &v);

-

-   switch (type) {

-   case TYPE_INT:

-      params[0] = INT_TO_BOOLEAN(v.value_int);

-      break;

-   case TYPE_INT_4:

-      params[0] = INT_TO_BOOLEAN(v.value_int_4[0]);

-      params[1] = INT_TO_BOOLEAN(v.value_int_4[1]);

-      params[2] = INT_TO_BOOLEAN(v.value_int_4[2]);

-      params[3] = INT_TO_BOOLEAN(v.value_int_4[3]);

-      break;

-   case TYPE_INT64:

-      params[0] = INT64_TO_BOOLEAN(v.value_int);

-      break;

-   default:

-      ; /* nothing - GL error was recorded */

-   }

-}

-

-void GLAPIENTRY

-_mesa_GetIntegerIndexedv( GLenum pname, GLuint index, GLint *params )

-{

-   union value v;

-   enum value_type type =

-      find_value_indexed("glGetIntegerIndexedv", pname, index, &v);

-

-   switch (type) {

-   case TYPE_INT:

-      params[0] = v.value_int;

-      break;

-   case TYPE_INT_4:

-      params[0] = v.value_int_4[0];

-      params[1] = v.value_int_4[1];

-      params[2] = v.value_int_4[2];

-      params[3] = v.value_int_4[3];

-      break;

-   case TYPE_INT64:

-      params[0] = INT64_TO_INT(v.value_int);

-      break;

-   default:

-      ; /* nothing - GL error was recorded */

-   }

-}

-

-#if FEATURE_ARB_sync

-void GLAPIENTRY

-_mesa_GetInteger64Indexedv( GLenum pname, GLuint index, GLint64 *params )

-{

-   union value v;

-   enum value_type type =

-      find_value_indexed("glGetIntegerIndexedv", pname, index, &v);      

-

-   switch (type) {

-   case TYPE_INT:

-      params[0] = v.value_int;

-      break;

-   case TYPE_INT_4:

-      params[0] = v.value_int_4[0];

-      params[1] = v.value_int_4[1];

-      params[2] = v.value_int_4[2];

-      params[3] = v.value_int_4[3];

-      break;

-   case TYPE_INT64:

-      params[0] = v.value_int;

-      break;

-   default:

-      ; /* nothing - GL error was recorded */

-   }

-}

-#endif /* FEATURE_ARB_sync */

-

-#if FEATURE_ES1

-void GLAPIENTRY

-_mesa_GetFixedv(GLenum pname, GLfixed *params)

-{

-   const struct value_desc *d;

-   union value v;

-   GLmatrix *m;

-   int shift, i;

-   void *p;

-

-   d = find_value("glGetDoublev", pname, &p, &v);

-   switch (d->type) {

-   case TYPE_INVALID:

-      break;

-   case TYPE_CONST:

-      params[0] = INT_TO_FIXED(d->offset);

-      break;

-

-   case TYPE_FLOAT_4:

-   case TYPE_FLOATN_4:

-      params[3] = FLOAT_TO_FIXED(((GLfloat *) p)[3]);

-   case TYPE_FLOAT_3:

-   case TYPE_FLOATN_3:

-      params[2] = FLOAT_TO_FIXED(((GLfloat *) p)[2]);

-   case TYPE_FLOAT_2:

-   case TYPE_FLOATN_2:

-      params[1] = FLOAT_TO_FIXED(((GLfloat *) p)[1]);

-   case TYPE_FLOAT:

-   case TYPE_FLOATN:

-      params[0] = FLOAT_TO_FIXED(((GLfloat *) p)[0]);

-      break;

-

-   case TYPE_DOUBLEN:

-      params[0] = FLOAT_TO_FIXED(((GLdouble *) p)[0]);

-      break;

-

-   case TYPE_INT_4:

-      params[3] = INT_TO_FIXED(((GLint *) p)[3]);

-   case TYPE_INT_3:

-      params[2] = INT_TO_FIXED(((GLint *) p)[2]);

-   case TYPE_INT_2:

-   case TYPE_ENUM_2:

-      params[1] = INT_TO_FIXED(((GLint *) p)[1]);

-   case TYPE_INT:

-   case TYPE_ENUM:

-      params[0] = INT_TO_FIXED(((GLint *) p)[0]);

-      break;

-

-   case TYPE_INT_N:

-      for (i = 0; i < v.value_int_n.n; i++)

-	 params[i] = INT_TO_FIXED(v.value_int_n.ints[i]);

-      break;

-

-   case TYPE_INT64:

-      params[0] = ((GLint64 *) p)[0];

-      break;

-

-   case TYPE_BOOLEAN:

-      params[0] = BOOLEAN_TO_FIXED(((GLboolean*) p)[0]);

-      break;		

-

-   case TYPE_MATRIX:

-      m = *(GLmatrix **) p;

-      for (i = 0; i < 16; i++)

-	 params[i] = FLOAT_TO_FIXED(m->m[i]);

-      break;

-

-   case TYPE_MATRIX_T:

-      m = *(GLmatrix **) p;

-      for (i = 0; i < 16; i++)

-	 params[i] = FLOAT_TO_FIXED(m->m[transpose[i]]);

-      break;

-

-   case TYPE_BIT_0:

-   case TYPE_BIT_1:

-   case TYPE_BIT_2:

-   case TYPE_BIT_3:

-   case TYPE_BIT_4:

-   case TYPE_BIT_5:

-      shift = d->type - TYPE_BIT_0;

-      params[0] = BOOLEAN_TO_FIXED((*(GLbitfield *) p >> shift) & 1);

-      break;

-   }

-}

-#endif

+/*
+ * Copyright (C) 2010  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2010  Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Author: Kristian Høgsberg <krh@bitplanet.net>
+ */
+
+#include "glheader.h"
+#include "context.h"
+#include "enable.h"
+#include "enums.h"
+#include "extensions.h"
+#include "get.h"
+#include "macros.h"
+#include "mfeatures.h"
+#include "mtypes.h"
+#include "state.h"
+#include "texcompress.h"
+#include "framebuffer.h"
+
+/* This is a table driven implemetation of the glGet*v() functions.
+ * The basic idea is that most getters just look up an int somewhere
+ * in struct gl_context and then convert it to a bool or float according to
+ * which of glGetIntegerv() glGetBooleanv() etc is being called.
+ * Instead of generating code to do this, we can just record the enum
+ * value and the offset into struct gl_context in an array of structs.  Then
+ * in glGet*(), we lookup the struct for the enum in question, and use
+ * the offset to get the int we need.
+ *
+ * Sometimes we need to look up a float, a boolean, a bit in a
+ * bitfield, a matrix or other types instead, so we need to track the
+ * type of the value in struct gl_context.  And sometimes the value isn't in
+ * struct gl_context but in the drawbuffer, the array object, current texture
+ * unit, or maybe it's a computed value.  So we need to also track
+ * where or how to find the value.  Finally, we sometimes need to
+ * check that one of a number of extensions are enabled, the GL
+ * version or flush or call _mesa_update_state().  This is done by
+ * attaching optional extra information to the value description
+ * struct, it's sort of like an array of opcodes that describe extra
+ * checks or actions.
+ *
+ * Putting all this together we end up with struct value_desc below,
+ * and with a couple of macros to help, the table of struct value_desc
+ * is about as concise as the specification in the old python script.
+ */
+
+#undef CONST
+
+#define FLOAT_TO_BOOLEAN(X)   ( (X) ? GL_TRUE : GL_FALSE )
+#define FLOAT_TO_FIXED(F)     ( ((F) * 65536.0f > INT_MAX) ? INT_MAX : \
+                                ((F) * 65536.0f < INT_MIN) ? INT_MIN : \
+                                (GLint) ((F) * 65536.0f) )
+
+#define INT_TO_BOOLEAN(I)     ( (I) ? GL_TRUE : GL_FALSE )
+#define INT_TO_FIXED(I)       ( ((I) > SHRT_MAX) ? INT_MAX : \
+                                ((I) < SHRT_MIN) ? INT_MIN : \
+                                (GLint) ((I) * 65536) )
+
+#define INT64_TO_BOOLEAN(I)   ( (I) ? GL_TRUE : GL_FALSE )
+#define INT64_TO_INT(I)       ( (GLint)((I > INT_MAX) ? INT_MAX : ((I < INT_MIN) ? INT_MIN : (I))) )
+
+#define BOOLEAN_TO_INT(B)     ( (GLint) (B) )
+#define BOOLEAN_TO_INT64(B)   ( (GLint64) (B) )
+#define BOOLEAN_TO_FLOAT(B)   ( (B) ? 1.0F : 0.0F )
+#define BOOLEAN_TO_FIXED(B)   ( (GLint) ((B) ? 1 : 0) << 16 )
+
+#define ENUM_TO_INT64(E)      ( (GLint64) (E) )
+#define ENUM_TO_FIXED(E)      (E)
+
+enum value_type {
+   TYPE_INVALID,
+   TYPE_API_MASK,
+   TYPE_INT,
+   TYPE_INT_2,
+   TYPE_INT_3,
+   TYPE_INT_4,
+   TYPE_INT_N,
+   TYPE_INT64,
+   TYPE_ENUM,
+   TYPE_ENUM_2,
+   TYPE_BOOLEAN,
+   TYPE_BIT_0,
+   TYPE_BIT_1,
+   TYPE_BIT_2,
+   TYPE_BIT_3,
+   TYPE_BIT_4,
+   TYPE_BIT_5,
+   TYPE_FLOAT,
+   TYPE_FLOAT_2,
+   TYPE_FLOAT_3,
+   TYPE_FLOAT_4,
+   TYPE_FLOATN,
+   TYPE_FLOATN_2,
+   TYPE_FLOATN_3,
+   TYPE_FLOATN_4,
+   TYPE_DOUBLEN,
+   TYPE_MATRIX,
+   TYPE_MATRIX_T,
+   TYPE_CONST
+};
+
+enum value_location {
+   LOC_BUFFER,
+   LOC_CONTEXT,
+   LOC_ARRAY,
+   LOC_TEXUNIT,
+   LOC_CUSTOM
+};
+
+enum value_extra {
+   EXTRA_END = 0x8000,
+   EXTRA_VERSION_30,
+   EXTRA_VERSION_31,
+   EXTRA_VERSION_32,
+   EXTRA_VERSION_ES2,
+   EXTRA_NEW_BUFFERS, 
+   EXTRA_VALID_DRAW_BUFFER,
+   EXTRA_VALID_TEXTURE_UNIT,
+   EXTRA_FLUSH_CURRENT,
+};
+
+#define NO_EXTRA NULL
+#define NO_OFFSET 0
+
+struct value_desc {
+   GLenum pname;
+   GLubyte location;  /**< enum value_location */
+   GLubyte type;      /**< enum value_type */
+   int offset;
+   const int *extra;
+};
+
+union value {
+   GLfloat value_float;
+   GLfloat value_float_4[4];
+   GLmatrix *value_matrix;
+   GLint value_int;
+   GLint value_int_4[4];
+   GLint64 value_int64;
+   GLenum value_enum;
+
+   /* Sigh, see GL_COMPRESSED_TEXTURE_FORMATS_ARB handling */
+   struct {
+      GLint n, ints[100];
+   } value_int_n;
+   GLboolean value_bool;
+};
+
+#define BUFFER_FIELD(field, type) \
+   LOC_BUFFER, type, offsetof(struct gl_framebuffer, field)
+#define CONTEXT_FIELD(field, type) \
+   LOC_CONTEXT, type, offsetof(struct gl_context, field)
+#define ARRAY_FIELD(field, type) \
+   LOC_ARRAY, type, offsetof(struct gl_array_object, field)
+#define CONST(value) \
+   LOC_CONTEXT, TYPE_CONST, value
+
+#define BUFFER_INT(field) BUFFER_FIELD(field, TYPE_INT)
+#define BUFFER_ENUM(field) BUFFER_FIELD(field, TYPE_ENUM)
+#define BUFFER_BOOL(field) BUFFER_FIELD(field, TYPE_BOOLEAN)
+
+#define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)
+#define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)
+#define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)
+#define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)
+#define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)
+#define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)
+#define CONTEXT_BIT0(field) CONTEXT_FIELD(field, TYPE_BIT_0)
+#define CONTEXT_BIT1(field) CONTEXT_FIELD(field, TYPE_BIT_1)
+#define CONTEXT_BIT2(field) CONTEXT_FIELD(field, TYPE_BIT_2)
+#define CONTEXT_BIT3(field) CONTEXT_FIELD(field, TYPE_BIT_3)
+#define CONTEXT_BIT4(field) CONTEXT_FIELD(field, TYPE_BIT_4)
+#define CONTEXT_BIT5(field) CONTEXT_FIELD(field, TYPE_BIT_5)
+#define CONTEXT_FLOAT(field) CONTEXT_FIELD(field, TYPE_FLOAT)
+#define CONTEXT_FLOAT2(field) CONTEXT_FIELD(field, TYPE_FLOAT_2)
+#define CONTEXT_FLOAT3(field) CONTEXT_FIELD(field, TYPE_FLOAT_3)
+#define CONTEXT_FLOAT4(field) CONTEXT_FIELD(field, TYPE_FLOAT_4)
+#define CONTEXT_MATRIX(field) CONTEXT_FIELD(field, TYPE_MATRIX)
+#define CONTEXT_MATRIX_T(field) CONTEXT_FIELD(field, TYPE_MATRIX_T)
+
+#define ARRAY_INT(field) ARRAY_FIELD(field, TYPE_INT)
+#define ARRAY_ENUM(field) ARRAY_FIELD(field, TYPE_ENUM)
+#define ARRAY_BOOL(field) ARRAY_FIELD(field, TYPE_BOOLEAN)
+
+#define EXT(f)					\
+   offsetof(struct gl_extensions, f)
+
+#define EXTRA_EXT(e)				\
+   static const int extra_##e[] = {		\
+      EXT(e), EXTRA_END				\
+   }
+
+#define EXTRA_EXT2(e1, e2)			\
+   static const int extra_##e1##_##e2[] = {	\
+      EXT(e1), EXT(e2), EXTRA_END		\
+   }
+
+/* The 'extra' mechanism is a way to specify extra checks (such as
+ * extensions or specific gl versions) or actions (flush current, new
+ * buffers) that we need to do before looking up an enum.  We need to
+ * declare them all up front so we can refer to them in the value_desc
+ * structs below. */
+
+static const int extra_new_buffers[] = {
+   EXTRA_NEW_BUFFERS,
+   EXTRA_END
+};
+
+static const int extra_valid_draw_buffer[] = {
+   EXTRA_VALID_DRAW_BUFFER,
+   EXTRA_END
+};
+
+static const int extra_valid_texture_unit[] = {
+   EXTRA_VALID_TEXTURE_UNIT,
+   EXTRA_END
+};
+
+static const int extra_flush_current_valid_texture_unit[] = {
+   EXTRA_FLUSH_CURRENT,
+   EXTRA_VALID_TEXTURE_UNIT,
+   EXTRA_END
+};
+
+static const int extra_flush_current[] = {
+   EXTRA_FLUSH_CURRENT,
+   EXTRA_END
+};
+
+static const int extra_new_buffers_OES_read_format[] = {
+   EXTRA_NEW_BUFFERS,
+   EXT(OES_read_format),
+   EXTRA_END
+};
+
+static const int extra_EXT_secondary_color_flush_current[] = {
+   EXT(EXT_secondary_color),
+   EXTRA_FLUSH_CURRENT,
+   EXTRA_END
+};
+
+static const int extra_EXT_fog_coord_flush_current[] = {
+   EXT(EXT_fog_coord),
+   EXTRA_FLUSH_CURRENT,
+   EXTRA_END
+};
+
+static const int extra_EXT_texture_integer[] = {
+   EXT(EXT_texture_integer),
+   EXTRA_END
+};
+
+static const int extra_EXT_gpu_shader4[] = {
+   EXT(EXT_gpu_shader4),
+   EXTRA_END
+};
+
+
+EXTRA_EXT(ARB_ES2_compatibility);
+EXTRA_EXT(ARB_multitexture);
+EXTRA_EXT(ARB_texture_cube_map);
+EXTRA_EXT(MESA_texture_array);
+EXTRA_EXT2(EXT_secondary_color, ARB_vertex_program);
+EXTRA_EXT(EXT_secondary_color);
+EXTRA_EXT(EXT_fog_coord);
+EXTRA_EXT(EXT_texture_lod_bias);
+EXTRA_EXT(EXT_texture_filter_anisotropic);
+EXTRA_EXT(IBM_rasterpos_clip);
+EXTRA_EXT(NV_point_sprite);
+EXTRA_EXT(SGIS_generate_mipmap);
+EXTRA_EXT(NV_vertex_program);
+EXTRA_EXT(NV_fragment_program);
+EXTRA_EXT(NV_texture_rectangle);
+EXTRA_EXT(EXT_stencil_two_side);
+EXTRA_EXT(NV_light_max_exponent);
+EXTRA_EXT(EXT_depth_bounds_test);
+EXTRA_EXT(ARB_depth_clamp);
+EXTRA_EXT(ATI_fragment_shader);
+EXTRA_EXT(EXT_framebuffer_blit);
+EXTRA_EXT(ARB_shader_objects);
+EXTRA_EXT(EXT_provoking_vertex);
+EXTRA_EXT(ARB_fragment_shader);
+EXTRA_EXT(ARB_fragment_program);
+EXTRA_EXT2(ARB_framebuffer_object, EXT_framebuffer_multisample);
+EXTRA_EXT(EXT_framebuffer_object);
+EXTRA_EXT(APPLE_vertex_array_object);
+EXTRA_EXT(ARB_seamless_cube_map);
+EXTRA_EXT(EXT_compiled_vertex_array);
+EXTRA_EXT(ARB_sync);
+EXTRA_EXT(ARB_vertex_shader);
+EXTRA_EXT(EXT_transform_feedback);
+EXTRA_EXT(ARB_transform_feedback2);
+EXTRA_EXT(EXT_pixel_buffer_object);
+EXTRA_EXT(ARB_vertex_program);
+EXTRA_EXT2(NV_point_sprite, ARB_point_sprite);
+EXTRA_EXT2(ARB_fragment_program, NV_fragment_program);
+EXTRA_EXT2(ARB_vertex_program, NV_vertex_program);
+EXTRA_EXT2(ARB_vertex_program, ARB_fragment_program);
+EXTRA_EXT(ARB_vertex_buffer_object);
+EXTRA_EXT(ARB_geometry_shader4);
+EXTRA_EXT(ARB_copy_buffer);
+EXTRA_EXT(EXT_framebuffer_sRGB);
+
+static const int
+extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = {
+   EXT(ARB_vertex_program),
+   EXT(ARB_fragment_program),
+   EXT(NV_vertex_program),
+   EXTRA_END
+};
+
+static const int
+extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = {
+   EXT(NV_vertex_program),
+   EXT(ARB_vertex_program),
+   EXT(ARB_fragment_program),
+   EXT(NV_vertex_program),
+   EXTRA_END
+};
+
+static const int
+extra_NV_primitive_restart[] = {
+   EXT(NV_primitive_restart),
+   EXTRA_END
+};
+
+static const int extra_version_30[] = { EXTRA_VERSION_30, EXTRA_END };
+static const int extra_version_31[] = { EXTRA_VERSION_31, EXTRA_END };
+static const int extra_version_32[] = { EXTRA_VERSION_32, EXTRA_END };
+
+static const int
+extra_ARB_vertex_program_version_es2[] = {
+   EXT(ARB_vertex_program),
+   EXTRA_VERSION_ES2,
+   EXTRA_END
+};
+
+#define API_OPENGL_BIT (1 << API_OPENGL)
+#define API_OPENGLES_BIT (1 << API_OPENGLES)
+#define API_OPENGLES2_BIT (1 << API_OPENGLES2)
+
+/* This is the big table describing all the enums we accept in
+ * glGet*v().  The table is partitioned into six parts: enums
+ * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
+ * between OpenGL and GLES, enums exclusive to GLES, etc for the
+ * remaining combinations.  When we add the enums to the hash table in
+ * _mesa_init_get_hash(), we only add the enums for the API we're
+ * instantiating and the different sections are guarded by #if
+ * FEATURE_GL etc to make sure we only compile in the enums we may
+ * need. */
+
+static const struct value_desc values[] = {
+   /* Enums shared between OpenGL, GLES1 and GLES2 */
+   { 0, 0, TYPE_API_MASK,
+     API_OPENGL_BIT | API_OPENGLES_BIT | API_OPENGLES2_BIT, NO_EXTRA},
+   { GL_ALPHA_BITS, BUFFER_INT(Visual.alphaBits), extra_new_buffers },
+   { GL_BLEND, CONTEXT_BIT0(Color.BlendEnabled), NO_EXTRA },
+   { GL_BLEND_SRC, CONTEXT_ENUM(Color.Blend[0].SrcRGB), NO_EXTRA },
+   { GL_BLUE_BITS, BUFFER_INT(Visual.blueBits), extra_new_buffers },
+   { GL_COLOR_CLEAR_VALUE, CONTEXT_FIELD(Color.ClearColor[0], TYPE_FLOATN_4), NO_EXTRA },
+   { GL_COLOR_WRITEMASK, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },
+   { GL_CULL_FACE, CONTEXT_BOOL(Polygon.CullFlag), NO_EXTRA },
+   { GL_CULL_FACE_MODE, CONTEXT_ENUM(Polygon.CullFaceMode), NO_EXTRA },
+   { GL_DEPTH_BITS, BUFFER_INT(Visual.depthBits), NO_EXTRA },
+   { GL_DEPTH_CLEAR_VALUE, CONTEXT_FIELD(Depth.Clear, TYPE_DOUBLEN), NO_EXTRA },
+   { GL_DEPTH_FUNC, CONTEXT_ENUM(Depth.Func), NO_EXTRA },
+   { GL_DEPTH_RANGE, CONTEXT_FIELD(Viewport.Near, TYPE_FLOATN_2), NO_EXTRA },
+   { GL_DEPTH_TEST, CONTEXT_BOOL(Depth.Test), NO_EXTRA },
+   { GL_DEPTH_WRITEMASK, CONTEXT_BOOL(Depth.Mask), NO_EXTRA },
+   { GL_DITHER, CONTEXT_BOOL(Color.DitherFlag), NO_EXTRA },
+   { GL_FRONT_FACE, CONTEXT_ENUM(Polygon.FrontFace), NO_EXTRA },
+   { GL_GREEN_BITS, BUFFER_INT(Visual.greenBits), extra_new_buffers },
+   { GL_LINE_WIDTH, CONTEXT_FLOAT(Line.Width), NO_EXTRA },
+   { GL_ALIASED_LINE_WIDTH_RANGE, CONTEXT_FLOAT2(Const.MinLineWidth), NO_EXTRA },
+   { GL_MAX_ELEMENTS_VERTICES, CONTEXT_INT(Const.MaxArrayLockSize), NO_EXTRA },
+   { GL_MAX_ELEMENTS_INDICES, CONTEXT_INT(Const.MaxArrayLockSize), NO_EXTRA },
+   { GL_MAX_TEXTURE_SIZE, LOC_CUSTOM, TYPE_INT,
+     offsetof(struct gl_context, Const.MaxTextureLevels), NO_EXTRA },
+   { GL_MAX_VIEWPORT_DIMS, CONTEXT_INT2(Const.MaxViewportWidth), NO_EXTRA },
+   { GL_PACK_ALIGNMENT, CONTEXT_INT(Pack.Alignment), NO_EXTRA },
+   { GL_ALIASED_POINT_SIZE_RANGE, CONTEXT_FLOAT2(Const.MinPointSize), NO_EXTRA },
+   { GL_POLYGON_OFFSET_FACTOR, CONTEXT_FLOAT(Polygon.OffsetFactor ), NO_EXTRA },
+   { GL_POLYGON_OFFSET_UNITS, CONTEXT_FLOAT(Polygon.OffsetUnits ), NO_EXTRA },
+   { GL_POLYGON_OFFSET_FILL, CONTEXT_BOOL(Polygon.OffsetFill), NO_EXTRA },
+   { GL_RED_BITS, BUFFER_INT(Visual.redBits), extra_new_buffers },
+   { GL_SCISSOR_BOX, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },
+   { GL_SCISSOR_TEST, CONTEXT_BOOL(Scissor.Enabled), NO_EXTRA },
+   { GL_STENCIL_BITS, BUFFER_INT(Visual.stencilBits), NO_EXTRA },
+   { GL_STENCIL_CLEAR_VALUE, CONTEXT_INT(Stencil.Clear), NO_EXTRA },
+   { GL_STENCIL_FAIL, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
+   { GL_STENCIL_FUNC, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
+   { GL_STENCIL_PASS_DEPTH_FAIL, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
+   { GL_STENCIL_PASS_DEPTH_PASS, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
+   { GL_STENCIL_REF, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
+   { GL_STENCIL_TEST, CONTEXT_BOOL(Stencil.Enabled), NO_EXTRA },
+   { GL_STENCIL_VALUE_MASK, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
+   { GL_STENCIL_WRITEMASK, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
+   { GL_SUBPIXEL_BITS, CONTEXT_INT(Const.SubPixelBits), NO_EXTRA },
+   { GL_TEXTURE_BINDING_2D, LOC_CUSTOM, TYPE_INT, TEXTURE_2D_INDEX, NO_EXTRA },
+   { GL_UNPACK_ALIGNMENT, CONTEXT_INT(Unpack.Alignment), NO_EXTRA },
+   { GL_VIEWPORT, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },
+
+   /* GL_ARB_multitexture */
+   { GL_ACTIVE_TEXTURE_ARB,
+     LOC_CUSTOM, TYPE_INT, 0, extra_ARB_multitexture },
+
+   /* Note that all the OES_* extensions require that the Mesa "struct
+    * gl_extensions" include a member with the name of the extension.
+    * That structure does not yet include OES extensions (and we're
+    * not sure whether it will).  If it does, all the OES_*
+    * extensions below should mark the dependency. */
+
+   /* GL_ARB_texture_cube_map */
+   { GL_TEXTURE_BINDING_CUBE_MAP_ARB, LOC_CUSTOM, TYPE_INT,
+     TEXTURE_CUBE_INDEX, extra_ARB_texture_cube_map },
+   { GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, LOC_CUSTOM, TYPE_INT,
+     offsetof(struct gl_context, Const.MaxCubeTextureLevels),
+     extra_ARB_texture_cube_map }, /* XXX: OES_texture_cube_map */
+
+   /* XXX: OES_blend_subtract */
+   { GL_BLEND_SRC_RGB_EXT, CONTEXT_ENUM(Color.Blend[0].SrcRGB), NO_EXTRA },
+   { GL_BLEND_DST_RGB_EXT, CONTEXT_ENUM(Color.Blend[0].DstRGB), NO_EXTRA },
+   { GL_BLEND_SRC_ALPHA_EXT, CONTEXT_ENUM(Color.Blend[0].SrcA), NO_EXTRA },
+   { GL_BLEND_DST_ALPHA_EXT, CONTEXT_ENUM(Color.Blend[0].DstA), NO_EXTRA },
+
+   /* GL_BLEND_EQUATION_RGB, which is what we're really after, is
+    * defined identically to GL_BLEND_EQUATION. */
+   { GL_BLEND_EQUATION, CONTEXT_ENUM(Color.Blend[0].EquationRGB), NO_EXTRA },
+   { GL_BLEND_EQUATION_ALPHA_EXT, CONTEXT_ENUM(Color.Blend[0].EquationA), NO_EXTRA },
+
+   /* GL_ARB_texture_compression */
+   { GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
+   { GL_COMPRESSED_TEXTURE_FORMATS_ARB, LOC_CUSTOM, TYPE_INT_N, 0, NO_EXTRA },
+
+   /* GL_ARB_multisample */
+   { GL_SAMPLE_ALPHA_TO_COVERAGE_ARB,
+     CONTEXT_BOOL(Multisample.SampleAlphaToCoverage), NO_EXTRA },
+   { GL_SAMPLE_COVERAGE_ARB, CONTEXT_BOOL(Multisample.SampleCoverage), NO_EXTRA },
+   { GL_SAMPLE_COVERAGE_VALUE_ARB,
+     CONTEXT_FLOAT(Multisample.SampleCoverageValue), NO_EXTRA },
+   { GL_SAMPLE_COVERAGE_INVERT_ARB,
+     CONTEXT_BOOL(Multisample.SampleCoverageInvert), NO_EXTRA },
+   { GL_SAMPLE_BUFFERS_ARB, BUFFER_INT(Visual.sampleBuffers), NO_EXTRA },
+   { GL_SAMPLES_ARB, BUFFER_INT(Visual.samples), NO_EXTRA },
+
+   /* GL_SGIS_generate_mipmap */
+   { GL_GENERATE_MIPMAP_HINT_SGIS, CONTEXT_ENUM(Hint.GenerateMipmap),
+     extra_SGIS_generate_mipmap },
+
+   /* GL_ARB_vertex_buffer_object */
+   { GL_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
+
+   /* GL_ARB_vertex_buffer_object */
+   /* GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB - not supported */
+   { GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0,
+     extra_ARB_vertex_buffer_object },
+
+   /* GL_ARB_copy_buffer */
+   { GL_COPY_READ_BUFFER, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_copy_buffer },
+   { GL_COPY_WRITE_BUFFER, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_copy_buffer },
+
+   /* GL_OES_read_format */
+   { GL_IMPLEMENTATION_COLOR_READ_TYPE_OES, LOC_CUSTOM, TYPE_INT, 0,
+     extra_new_buffers_OES_read_format },
+   { GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES, LOC_CUSTOM, TYPE_INT, 0,
+     extra_new_buffers_OES_read_format },
+
+   /* GL_EXT_framebuffer_object */
+   { GL_FRAMEBUFFER_BINDING_EXT, BUFFER_INT(Name),
+     extra_EXT_framebuffer_object },
+   { GL_RENDERBUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
+     extra_EXT_framebuffer_object },
+   { GL_MAX_RENDERBUFFER_SIZE_EXT, CONTEXT_INT(Const.MaxRenderbufferSize),
+     extra_EXT_framebuffer_object },
+
+   /* This entry isn't spec'ed for GLES 2, but is needed for Mesa's
+    * GLSL: */
+   { GL_MAX_CLIP_PLANES, CONTEXT_INT(Const.MaxClipPlanes), NO_EXTRA },
+
+#if FEATURE_GL || FEATURE_ES1
+   /* Enums in OpenGL and GLES1 */
+   { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGLES_BIT, NO_EXTRA },
+   { GL_LIGHT0, CONTEXT_BOOL(Light.Light[0].Enabled), NO_EXTRA },
+   { GL_LIGHT1, CONTEXT_BOOL(Light.Light[1].Enabled), NO_EXTRA },
+   { GL_LIGHT2, CONTEXT_BOOL(Light.Light[2].Enabled), NO_EXTRA },
+   { GL_LIGHT3, CONTEXT_BOOL(Light.Light[3].Enabled), NO_EXTRA },
+   { GL_LIGHT4, CONTEXT_BOOL(Light.Light[4].Enabled), NO_EXTRA },
+   { GL_LIGHT5, CONTEXT_BOOL(Light.Light[5].Enabled), NO_EXTRA },
+   { GL_LIGHT6, CONTEXT_BOOL(Light.Light[6].Enabled), NO_EXTRA },
+   { GL_LIGHT7, CONTEXT_BOOL(Light.Light[7].Enabled), NO_EXTRA },
+   { GL_LIGHTING, CONTEXT_BOOL(Light.Enabled), NO_EXTRA },
+   { GL_LIGHT_MODEL_AMBIENT,
+     CONTEXT_FIELD(Light.Model.Ambient[0], TYPE_FLOATN_4), NO_EXTRA },
+   { GL_LIGHT_MODEL_TWO_SIDE, CONTEXT_BOOL(Light.Model.TwoSide), NO_EXTRA },
+   { GL_ALPHA_TEST, CONTEXT_BOOL(Color.AlphaEnabled), NO_EXTRA },
+   { GL_ALPHA_TEST_FUNC, CONTEXT_ENUM(Color.AlphaFunc), NO_EXTRA },
+   { GL_ALPHA_TEST_REF, CONTEXT_FIELD(Color.AlphaRef, TYPE_FLOATN), NO_EXTRA },
+   { GL_BLEND_DST, CONTEXT_ENUM(Color.Blend[0].DstRGB), NO_EXTRA },
+   { GL_CLIP_PLANE0, CONTEXT_BIT0(Transform.ClipPlanesEnabled), NO_EXTRA },
+   { GL_CLIP_PLANE1, CONTEXT_BIT1(Transform.ClipPlanesEnabled), NO_EXTRA },
+   { GL_CLIP_PLANE2, CONTEXT_BIT2(Transform.ClipPlanesEnabled), NO_EXTRA },
+   { GL_CLIP_PLANE3, CONTEXT_BIT3(Transform.ClipPlanesEnabled), NO_EXTRA },
+   { GL_CLIP_PLANE4, CONTEXT_BIT4(Transform.ClipPlanesEnabled), NO_EXTRA },
+   { GL_CLIP_PLANE5, CONTEXT_BIT5(Transform.ClipPlanesEnabled), NO_EXTRA },
+   { GL_COLOR_MATERIAL, CONTEXT_BOOL(Light.ColorMaterialEnabled), NO_EXTRA },
+   { GL_CURRENT_COLOR,
+     CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR0][0], TYPE_FLOATN_4),
+     extra_flush_current },
+   { GL_CURRENT_NORMAL,
+     CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_NORMAL][0], TYPE_FLOATN_3),
+     extra_flush_current },
+   { GL_CURRENT_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,
+     extra_flush_current_valid_texture_unit },
+   { GL_DISTANCE_ATTENUATION_EXT, CONTEXT_FLOAT3(Point.Params[0]), NO_EXTRA },
+   { GL_FOG, CONTEXT_BOOL(Fog.Enabled), NO_EXTRA },
+   { GL_FOG_COLOR, CONTEXT_FIELD(Fog.Color[0], TYPE_FLOATN_4), NO_EXTRA },
+   { GL_FOG_DENSITY, CONTEXT_FLOAT(Fog.Density), NO_EXTRA },
+   { GL_FOG_END, CONTEXT_FLOAT(Fog.End), NO_EXTRA },
+   { GL_FOG_HINT, CONTEXT_ENUM(Hint.Fog), NO_EXTRA },
+   { GL_FOG_MODE, CONTEXT_ENUM(Fog.Mode), NO_EXTRA },
+   { GL_FOG_START, CONTEXT_FLOAT(Fog.Start), NO_EXTRA },
+   { GL_LINE_SMOOTH, CONTEXT_BOOL(Line.SmoothFlag), NO_EXTRA },
+   { GL_LINE_SMOOTH_HINT, CONTEXT_ENUM(Hint.LineSmooth), NO_EXTRA },
+   { GL_LINE_WIDTH_RANGE, CONTEXT_FLOAT2(Const.MinLineWidthAA), NO_EXTRA },
+   { GL_COLOR_LOGIC_OP, CONTEXT_BOOL(Color.ColorLogicOpEnabled), NO_EXTRA },
+   { GL_LOGIC_OP_MODE, CONTEXT_ENUM(Color.LogicOp), NO_EXTRA },
+   { GL_MATRIX_MODE, CONTEXT_ENUM(Transform.MatrixMode), NO_EXTRA },
+   { GL_MAX_MODELVIEW_STACK_DEPTH, CONST(MAX_MODELVIEW_STACK_DEPTH), NO_EXTRA },
+   { GL_MAX_PROJECTION_STACK_DEPTH, CONST(MAX_PROJECTION_STACK_DEPTH), NO_EXTRA },
+   { GL_MAX_TEXTURE_STACK_DEPTH, CONST(MAX_TEXTURE_STACK_DEPTH), NO_EXTRA },
+   { GL_MODELVIEW_MATRIX, CONTEXT_MATRIX(ModelviewMatrixStack.Top), NO_EXTRA },
+   { GL_MODELVIEW_STACK_DEPTH, LOC_CUSTOM, TYPE_INT,
+     offsetof(struct gl_context, ModelviewMatrixStack.Depth), NO_EXTRA },
+   { GL_NORMALIZE, CONTEXT_BOOL(Transform.Normalize), NO_EXTRA },
+   { GL_PACK_SKIP_IMAGES_EXT, CONTEXT_INT(Pack.SkipImages), NO_EXTRA },
+   { GL_PERSPECTIVE_CORRECTION_HINT, CONTEXT_ENUM(Hint.PerspectiveCorrection), NO_EXTRA },
+   { GL_POINT_SIZE, CONTEXT_FLOAT(Point.Size), NO_EXTRA },
+   { GL_POINT_SIZE_RANGE, CONTEXT_FLOAT2(Const.MinPointSizeAA), NO_EXTRA },
+   { GL_POINT_SMOOTH, CONTEXT_BOOL(Point.SmoothFlag), NO_EXTRA },
+   { GL_POINT_SMOOTH_HINT, CONTEXT_ENUM(Hint.PointSmooth), NO_EXTRA },
+   { GL_POINT_SIZE_MIN_EXT, CONTEXT_FLOAT(Point.MinSize), NO_EXTRA },
+   { GL_POINT_SIZE_MAX_EXT, CONTEXT_FLOAT(Point.MaxSize), NO_EXTRA },
+   { GL_POINT_FADE_THRESHOLD_SIZE_EXT, CONTEXT_FLOAT(Point.Threshold), NO_EXTRA },
+   { GL_PROJECTION_MATRIX, CONTEXT_MATRIX(ProjectionMatrixStack.Top), NO_EXTRA },
+   { GL_PROJECTION_STACK_DEPTH, LOC_CUSTOM, TYPE_INT,
+     offsetof(struct gl_context, ProjectionMatrixStack.Depth), NO_EXTRA },
+   { GL_RESCALE_NORMAL, CONTEXT_BOOL(Transform.RescaleNormals), NO_EXTRA },
+   { GL_SHADE_MODEL, CONTEXT_ENUM(Light.ShadeModel), NO_EXTRA },
+   { GL_TEXTURE_2D, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
+   { GL_TEXTURE_MATRIX, LOC_CUSTOM, TYPE_MATRIX, 0, extra_valid_texture_unit },
+   { GL_TEXTURE_STACK_DEPTH, LOC_CUSTOM, TYPE_INT, 0,
+     extra_valid_texture_unit  },
+
+   { GL_VERTEX_ARRAY, ARRAY_BOOL(Vertex.Enabled), NO_EXTRA },
+   { GL_VERTEX_ARRAY_SIZE, ARRAY_INT(Vertex.Size), NO_EXTRA },
+   { GL_VERTEX_ARRAY_TYPE, ARRAY_ENUM(Vertex.Type), NO_EXTRA },
+   { GL_VERTEX_ARRAY_STRIDE, ARRAY_INT(Vertex.Stride), NO_EXTRA },
+   { GL_NORMAL_ARRAY, ARRAY_ENUM(Normal.Enabled), NO_EXTRA },
+   { GL_NORMAL_ARRAY_TYPE, ARRAY_ENUM(Normal.Type), NO_EXTRA },
+   { GL_NORMAL_ARRAY_STRIDE, ARRAY_INT(Normal.Stride), NO_EXTRA },
+   { GL_COLOR_ARRAY, ARRAY_BOOL(Color.Enabled), NO_EXTRA },
+   { GL_COLOR_ARRAY_SIZE, ARRAY_INT(Color.Size), NO_EXTRA },
+   { GL_COLOR_ARRAY_TYPE, ARRAY_ENUM(Color.Type), NO_EXTRA },
+   { GL_COLOR_ARRAY_STRIDE, ARRAY_INT(Color.Stride), NO_EXTRA },
+   { GL_TEXTURE_COORD_ARRAY,
+     LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Enabled), NO_EXTRA },
+   { GL_TEXTURE_COORD_ARRAY_SIZE,
+     LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Size), NO_EXTRA },
+   { GL_TEXTURE_COORD_ARRAY_TYPE,
+     LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Type), NO_EXTRA },
+   { GL_TEXTURE_COORD_ARRAY_STRIDE,
+     LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Stride), NO_EXTRA },
+
+   /* GL_ARB_ES2_compatibility */
+   { GL_SHADER_COMPILER, CONST(1), extra_ARB_ES2_compatibility },
+   { GL_MAX_VARYING_VECTORS, CONTEXT_INT(Const.MaxVarying),
+     extra_ARB_ES2_compatibility },
+   { GL_MAX_VERTEX_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0,
+     extra_ARB_ES2_compatibility },
+   { GL_MAX_FRAGMENT_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0,
+     extra_ARB_ES2_compatibility },
+
+   /* GL_ARB_multitexture */
+   { GL_MAX_TEXTURE_UNITS_ARB,
+     CONTEXT_INT(Const.MaxTextureUnits), extra_ARB_multitexture },
+   { GL_CLIENT_ACTIVE_TEXTURE_ARB,
+     LOC_CUSTOM, TYPE_INT, 0, extra_ARB_multitexture },
+
+   /* GL_ARB_texture_cube_map */
+   { GL_TEXTURE_CUBE_MAP_ARB, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
+   /* S, T, and R are always set at the same time */
+   { GL_TEXTURE_GEN_STR_OES, LOC_TEXUNIT, TYPE_BIT_0,
+     offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
+
+   /* GL_ARB_multisample */
+   { GL_MULTISAMPLE_ARB, CONTEXT_BOOL(Multisample.Enabled), NO_EXTRA },
+   { GL_SAMPLE_ALPHA_TO_ONE_ARB, CONTEXT_BOOL(Multisample.SampleAlphaToOne), NO_EXTRA },
+
+   /* GL_ARB_vertex_buffer_object */
+   { GL_VERTEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
+     offsetof(struct gl_array_object, Vertex.BufferObj), NO_EXTRA },
+   { GL_NORMAL_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
+     offsetof(struct gl_array_object, Normal.BufferObj), NO_EXTRA },
+   { GL_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
+     offsetof(struct gl_array_object, Color.BufferObj), NO_EXTRA },
+   { GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
+
+   /* GL_OES_point_sprite */
+   { GL_POINT_SPRITE_NV,
+     CONTEXT_BOOL(Point.PointSprite),
+     extra_NV_point_sprite_ARB_point_sprite },
+
+   /* GL_ARB_fragment_shader */
+   { GL_MAX_FRAGMENT_UNIFORM_COMPONENTS_ARB,
+     CONTEXT_INT(Const.FragmentProgram.MaxUniformComponents),
+     extra_ARB_fragment_shader },
+
+   /* GL_ARB_vertex_shader */
+   { GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB,
+     CONTEXT_INT(Const.VertexProgram.MaxUniformComponents),
+     extra_ARB_vertex_shader },
+   { GL_MAX_VARYING_FLOATS_ARB, LOC_CUSTOM, TYPE_INT, 0,
+     extra_ARB_vertex_shader },
+
+   /* GL_EXT_texture_lod_bias */
+   { GL_MAX_TEXTURE_LOD_BIAS_EXT, CONTEXT_FLOAT(Const.MaxTextureLodBias),
+	 extra_EXT_texture_lod_bias },
+
+   /* GL_EXT_texture_filter_anisotropic */
+   { GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT,
+     CONTEXT_FLOAT(Const.MaxTextureMaxAnisotropy),
+     extra_EXT_texture_filter_anisotropic },
+#endif /* FEATURE_GL || FEATURE_ES1 */
+
+#if FEATURE_ES1
+   { 0, 0, TYPE_API_MASK, API_OPENGLES_BIT },
+   /* XXX: OES_matrix_get */
+   { GL_MODELVIEW_MATRIX_FLOAT_AS_INT_BITS_OES },
+   { GL_PROJECTION_MATRIX_FLOAT_AS_INT_BITS_OES },
+   { GL_TEXTURE_MATRIX_FLOAT_AS_INT_BITS_OES },
+
+   /* OES_point_size_array */
+   { GL_POINT_SIZE_ARRAY_OES, ARRAY_FIELD(PointSize.Enabled, TYPE_BOOLEAN) },
+   { GL_POINT_SIZE_ARRAY_TYPE_OES, ARRAY_FIELD(PointSize.Type, TYPE_ENUM) },
+   { GL_POINT_SIZE_ARRAY_STRIDE_OES, ARRAY_FIELD(PointSize.Stride, TYPE_INT) },
+   { GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES, LOC_CUSTOM, TYPE_INT, 0 },
+#endif /* FEATURE_ES1 */
+
+#if FEATURE_GL || FEATURE_ES2
+   { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGLES2_BIT, NO_EXTRA },
+   /* This entry isn't spec'ed for GLES 2, but is needed for Mesa's GLSL: */
+   { GL_MAX_LIGHTS, CONTEXT_INT(Const.MaxLights), NO_EXTRA },
+   { GL_MAX_TEXTURE_COORDS_ARB, /* == GL_MAX_TEXTURE_COORDS_NV */
+     CONTEXT_INT(Const.MaxTextureCoordUnits),
+     extra_ARB_fragment_program_NV_fragment_program },
+
+   /* GL_ARB_draw_buffers */
+   { GL_MAX_DRAW_BUFFERS_ARB, CONTEXT_INT(Const.MaxDrawBuffers), NO_EXTRA },
+
+   { GL_BLEND_COLOR_EXT, CONTEXT_FIELD(Color.BlendColor[0], TYPE_FLOATN_4), NO_EXTRA },
+   /* GL_ARB_fragment_program */
+   { GL_MAX_TEXTURE_IMAGE_UNITS_ARB, /* == GL_MAX_TEXTURE_IMAGE_UNITS_NV */
+     CONTEXT_INT(Const.MaxTextureImageUnits),
+     extra_ARB_fragment_program_NV_fragment_program },
+   { GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB,
+     CONTEXT_INT(Const.MaxVertexTextureImageUnits), extra_ARB_vertex_shader },
+   { GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB,
+     CONTEXT_INT(Const.MaxCombinedTextureImageUnits),
+     extra_ARB_vertex_shader },
+
+   /* GL_ARB_shader_objects
+    * Actually, this token isn't part of GL_ARB_shader_objects, but is
+    * close enough for now. */
+   { GL_CURRENT_PROGRAM, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_shader_objects },
+
+   /* OpenGL 2.0 */
+   { GL_STENCIL_BACK_FUNC, CONTEXT_ENUM(Stencil.Function[1]), NO_EXTRA },
+   { GL_STENCIL_BACK_VALUE_MASK, CONTEXT_INT(Stencil.ValueMask[1]), NO_EXTRA },
+   { GL_STENCIL_BACK_WRITEMASK, CONTEXT_INT(Stencil.WriteMask[1]), NO_EXTRA },
+   { GL_STENCIL_BACK_REF, CONTEXT_INT(Stencil.Ref[1]), NO_EXTRA },
+   { GL_STENCIL_BACK_FAIL, CONTEXT_ENUM(Stencil.FailFunc[1]), NO_EXTRA },
+   { GL_STENCIL_BACK_PASS_DEPTH_FAIL, CONTEXT_ENUM(Stencil.ZFailFunc[1]), NO_EXTRA },
+   { GL_STENCIL_BACK_PASS_DEPTH_PASS, CONTEXT_ENUM(Stencil.ZPassFunc[1]), NO_EXTRA },
+
+   { GL_MAX_VERTEX_ATTRIBS_ARB,
+     CONTEXT_INT(Const.VertexProgram.MaxAttribs),
+     extra_ARB_vertex_program_version_es2 },
+
+   /* OES_texture_3D */
+   { GL_TEXTURE_BINDING_3D, LOC_CUSTOM, TYPE_INT, TEXTURE_3D_INDEX, NO_EXTRA },
+   { GL_MAX_3D_TEXTURE_SIZE, LOC_CUSTOM, TYPE_INT,
+     offsetof(struct gl_context, Const.Max3DTextureLevels), NO_EXTRA },
+
+   /* GL_ARB_fragment_program/OES_standard_derivatives */
+   { GL_FRAGMENT_SHADER_DERIVATIVE_HINT_ARB,
+     CONTEXT_ENUM(Hint.FragmentShaderDerivative), extra_ARB_fragment_shader },
+#endif /* FEATURE_GL || FEATURE_ES2 */
+
+#if FEATURE_ES2
+   /* Enums unique to OpenGL ES 2.0 */
+   { 0, 0, TYPE_API_MASK, API_OPENGLES2_BIT, NO_EXTRA },
+   { GL_MAX_FRAGMENT_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
+   { GL_MAX_VARYING_VECTORS, CONTEXT_INT(Const.MaxVarying), NO_EXTRA },
+   { GL_MAX_VERTEX_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
+   { GL_SHADER_COMPILER, CONST(1), NO_EXTRA },
+   /* OES_get_program_binary */
+   { GL_NUM_SHADER_BINARY_FORMATS, CONST(0), NO_EXTRA },
+   { GL_SHADER_BINARY_FORMATS, CONST(0), NO_EXTRA },
+#endif /* FEATURE_ES2 */
+
+#if FEATURE_GL
+   /* Remaining enums are only in OpenGL */
+   { 0, 0, TYPE_API_MASK, API_OPENGL_BIT, NO_EXTRA },
+   { GL_ACCUM_RED_BITS, BUFFER_INT(Visual.accumRedBits), NO_EXTRA },
+   { GL_ACCUM_GREEN_BITS, BUFFER_INT(Visual.accumGreenBits), NO_EXTRA },
+   { GL_ACCUM_BLUE_BITS, BUFFER_INT(Visual.accumBlueBits), NO_EXTRA },
+   { GL_ACCUM_ALPHA_BITS, BUFFER_INT(Visual.accumAlphaBits), NO_EXTRA },
+   { GL_ACCUM_CLEAR_VALUE, CONTEXT_FIELD(Accum.ClearColor[0], TYPE_FLOATN_4), NO_EXTRA },
+   { GL_ALPHA_BIAS, CONTEXT_FLOAT(Pixel.AlphaBias), NO_EXTRA },
+   { GL_ALPHA_SCALE, CONTEXT_FLOAT(Pixel.AlphaScale), NO_EXTRA },
+   { GL_ATTRIB_STACK_DEPTH, CONTEXT_INT(AttribStackDepth), NO_EXTRA },
+   { GL_AUTO_NORMAL, CONTEXT_BOOL(Eval.AutoNormal), NO_EXTRA },
+   { GL_AUX_BUFFERS, BUFFER_INT(Visual.numAuxBuffers), NO_EXTRA },
+   { GL_BLUE_BIAS, CONTEXT_FLOAT(Pixel.BlueBias), NO_EXTRA },
+   { GL_BLUE_SCALE, CONTEXT_FLOAT(Pixel.BlueScale), NO_EXTRA },
+   { GL_CLIENT_ATTRIB_STACK_DEPTH, CONTEXT_INT(ClientAttribStackDepth), NO_EXTRA },
+   { GL_COLOR_MATERIAL_FACE, CONTEXT_ENUM(Light.ColorMaterialFace), NO_EXTRA },
+   { GL_COLOR_MATERIAL_PARAMETER, CONTEXT_ENUM(Light.ColorMaterialMode), NO_EXTRA },
+   { GL_CURRENT_INDEX,
+     CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_COLOR_INDEX][0]),
+     extra_flush_current },
+   { GL_CURRENT_RASTER_COLOR,
+     CONTEXT_FIELD(Current.RasterColor[0], TYPE_FLOATN_4), NO_EXTRA },
+   { GL_CURRENT_RASTER_DISTANCE, CONTEXT_FLOAT(Current.RasterDistance), NO_EXTRA },
+   { GL_CURRENT_RASTER_INDEX, CONST(1), NO_EXTRA },
+   { GL_CURRENT_RASTER_POSITION, CONTEXT_FLOAT4(Current.RasterPos[0]), NO_EXTRA },
+   { GL_CURRENT_RASTER_SECONDARY_COLOR,
+     CONTEXT_FIELD(Current.RasterSecondaryColor[0], TYPE_FLOATN_4), NO_EXTRA },
+   { GL_CURRENT_RASTER_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,
+     extra_valid_texture_unit },
+   { GL_CURRENT_RASTER_POSITION_VALID, CONTEXT_BOOL(Current.RasterPosValid), NO_EXTRA },
+   { GL_DEPTH_BIAS, CONTEXT_FLOAT(Pixel.DepthBias), NO_EXTRA },
+   { GL_DEPTH_SCALE, CONTEXT_FLOAT(Pixel.DepthScale), NO_EXTRA },
+   { GL_DOUBLEBUFFER, BUFFER_INT(Visual.doubleBufferMode), NO_EXTRA },
+   { GL_DRAW_BUFFER, BUFFER_ENUM(ColorDrawBuffer[0]), NO_EXTRA },
+   { GL_EDGE_FLAG, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
+   { GL_FEEDBACK_BUFFER_SIZE, CONTEXT_INT(Feedback.BufferSize), NO_EXTRA },
+   { GL_FEEDBACK_BUFFER_TYPE, CONTEXT_ENUM(Feedback.Type), NO_EXTRA },
+   { GL_FOG_INDEX, CONTEXT_FLOAT(Fog.Index), NO_EXTRA },
+   { GL_GREEN_BIAS, CONTEXT_FLOAT(Pixel.GreenBias), NO_EXTRA },
+   { GL_GREEN_SCALE, CONTEXT_FLOAT(Pixel.GreenScale), NO_EXTRA },
+   { GL_INDEX_BITS, BUFFER_INT(Visual.indexBits), extra_new_buffers },
+   { GL_INDEX_CLEAR_VALUE, CONTEXT_INT(Color.ClearIndex), NO_EXTRA },
+   { GL_INDEX_MODE, CONST(0) , NO_EXTRA}, 
+   { GL_INDEX_OFFSET, CONTEXT_INT(Pixel.IndexOffset), NO_EXTRA },
+   { GL_INDEX_SHIFT, CONTEXT_INT(Pixel.IndexShift), NO_EXTRA },
+   { GL_INDEX_WRITEMASK, CONTEXT_INT(Color.IndexMask), NO_EXTRA },
+   { GL_LIGHT_MODEL_COLOR_CONTROL, CONTEXT_ENUM(Light.Model.ColorControl), NO_EXTRA },
+   { GL_LIGHT_MODEL_LOCAL_VIEWER, CONTEXT_BOOL(Light.Model.LocalViewer), NO_EXTRA },
+   { GL_LINE_STIPPLE, CONTEXT_BOOL(Line.StippleFlag), NO_EXTRA },
+   { GL_LINE_STIPPLE_PATTERN, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
+   { GL_LINE_STIPPLE_REPEAT, CONTEXT_INT(Line.StippleFactor), NO_EXTRA },
+   { GL_LINE_WIDTH_GRANULARITY, CONTEXT_FLOAT(Const.LineWidthGranularity), NO_EXTRA },
+   { GL_LIST_BASE, CONTEXT_INT(List.ListBase), NO_EXTRA },
+   { GL_LIST_INDEX, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
+   { GL_LIST_MODE, LOC_CUSTOM, TYPE_ENUM, 0, NO_EXTRA },
+   { GL_INDEX_LOGIC_OP, CONTEXT_BOOL(Color.IndexLogicOpEnabled), NO_EXTRA },
+   { GL_MAP1_COLOR_4, CONTEXT_BOOL(Eval.Map1Color4), NO_EXTRA },
+   { GL_MAP1_GRID_DOMAIN, CONTEXT_FLOAT2(Eval.MapGrid1u1), NO_EXTRA },
+   { GL_MAP1_GRID_SEGMENTS, CONTEXT_INT(Eval.MapGrid1un), NO_EXTRA },
+   { GL_MAP1_INDEX, CONTEXT_BOOL(Eval.Map1Index), NO_EXTRA },
+   { GL_MAP1_NORMAL, CONTEXT_BOOL(Eval.Map1Normal), NO_EXTRA },
+   { GL_MAP1_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map1TextureCoord1), NO_EXTRA },
+   { GL_MAP1_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map1TextureCoord2), NO_EXTRA },
+   { GL_MAP1_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map1TextureCoord3), NO_EXTRA },
+   { GL_MAP1_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map1TextureCoord4), NO_EXTRA },
+   { GL_MAP1_VERTEX_3, CONTEXT_BOOL(Eval.Map1Vertex3), NO_EXTRA },
+   { GL_MAP1_VERTEX_4, CONTEXT_BOOL(Eval.Map1Vertex4), NO_EXTRA },
+   { GL_MAP2_COLOR_4, CONTEXT_BOOL(Eval.Map2Color4), NO_EXTRA },
+   { GL_MAP2_GRID_DOMAIN, LOC_CUSTOM, TYPE_FLOAT_4, 0, NO_EXTRA },
+   { GL_MAP2_GRID_SEGMENTS, CONTEXT_INT2(Eval.MapGrid2un), NO_EXTRA },
+   { GL_MAP2_INDEX, CONTEXT_BOOL(Eval.Map2Index), NO_EXTRA },
+   { GL_MAP2_NORMAL, CONTEXT_BOOL(Eval.Map2Normal), NO_EXTRA },
+   { GL_MAP2_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map2TextureCoord1), NO_EXTRA },
+   { GL_MAP2_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map2TextureCoord2), NO_EXTRA },
+   { GL_MAP2_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map2TextureCoord3), NO_EXTRA },
+   { GL_MAP2_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map2TextureCoord4), NO_EXTRA },
+   { GL_MAP2_VERTEX_3, CONTEXT_BOOL(Eval.Map2Vertex3), NO_EXTRA },
+   { GL_MAP2_VERTEX_4, CONTEXT_BOOL(Eval.Map2Vertex4), NO_EXTRA },
+   { GL_MAP_COLOR, CONTEXT_BOOL(Pixel.MapColorFlag), NO_EXTRA },
+   { GL_MAP_STENCIL, CONTEXT_BOOL(Pixel.MapStencilFlag), NO_EXTRA },
+   { GL_MAX_ATTRIB_STACK_DEPTH, CONST(MAX_ATTRIB_STACK_DEPTH), NO_EXTRA },
+   { GL_MAX_CLIENT_ATTRIB_STACK_DEPTH, CONST(MAX_CLIENT_ATTRIB_STACK_DEPTH), NO_EXTRA },
+
+   { GL_MAX_EVAL_ORDER, CONST(MAX_EVAL_ORDER), NO_EXTRA },
+   { GL_MAX_LIST_NESTING, CONST(MAX_LIST_NESTING), NO_EXTRA },
+   { GL_MAX_NAME_STACK_DEPTH, CONST(MAX_NAME_STACK_DEPTH), NO_EXTRA },
+   { GL_MAX_PIXEL_MAP_TABLE, CONST(MAX_PIXEL_MAP_TABLE), NO_EXTRA },
+   { GL_NAME_STACK_DEPTH, CONTEXT_INT(Select.NameStackDepth), NO_EXTRA },
+   { GL_PACK_LSB_FIRST, CONTEXT_BOOL(Pack.LsbFirst), NO_EXTRA },
+   { GL_PACK_ROW_LENGTH, CONTEXT_INT(Pack.RowLength), NO_EXTRA },
+   { GL_PACK_SKIP_PIXELS, CONTEXT_INT(Pack.SkipPixels), NO_EXTRA },
+   { GL_PACK_SKIP_ROWS, CONTEXT_INT(Pack.SkipRows), NO_EXTRA },
+   { GL_PACK_SWAP_BYTES, CONTEXT_BOOL(Pack.SwapBytes), NO_EXTRA },
+   { GL_PACK_IMAGE_HEIGHT_EXT, CONTEXT_INT(Pack.ImageHeight), NO_EXTRA },
+   { GL_PACK_INVERT_MESA, CONTEXT_BOOL(Pack.Invert), NO_EXTRA },
+   { GL_PIXEL_MAP_A_TO_A_SIZE, CONTEXT_INT(PixelMaps.AtoA.Size), NO_EXTRA },
+   { GL_PIXEL_MAP_B_TO_B_SIZE, CONTEXT_INT(PixelMaps.BtoB.Size), NO_EXTRA },
+   { GL_PIXEL_MAP_G_TO_G_SIZE, CONTEXT_INT(PixelMaps.GtoG.Size), NO_EXTRA },
+   { GL_PIXEL_MAP_I_TO_A_SIZE, CONTEXT_INT(PixelMaps.ItoA.Size), NO_EXTRA },
+   { GL_PIXEL_MAP_I_TO_B_SIZE, CONTEXT_INT(PixelMaps.ItoB.Size), NO_EXTRA },
+   { GL_PIXEL_MAP_I_TO_G_SIZE, CONTEXT_INT(PixelMaps.ItoG.Size), NO_EXTRA },
+   { GL_PIXEL_MAP_I_TO_I_SIZE, CONTEXT_INT(PixelMaps.ItoI.Size), NO_EXTRA },
+   { GL_PIXEL_MAP_I_TO_R_SIZE, CONTEXT_INT(PixelMaps.ItoR.Size), NO_EXTRA },
+   { GL_PIXEL_MAP_R_TO_R_SIZE, CONTEXT_INT(PixelMaps.RtoR.Size), NO_EXTRA },
+   { GL_PIXEL_MAP_S_TO_S_SIZE, CONTEXT_INT(PixelMaps.StoS.Size), NO_EXTRA },
+   { GL_POINT_SIZE_GRANULARITY, CONTEXT_FLOAT(Const.PointSizeGranularity), NO_EXTRA },
+   { GL_POLYGON_MODE, CONTEXT_ENUM2(Polygon.FrontMode), NO_EXTRA },
+   { GL_POLYGON_OFFSET_BIAS_EXT, CONTEXT_FLOAT(Polygon.OffsetUnits), NO_EXTRA },
+   { GL_POLYGON_OFFSET_POINT, CONTEXT_BOOL(Polygon.OffsetPoint), NO_EXTRA },
+   { GL_POLYGON_OFFSET_LINE, CONTEXT_BOOL(Polygon.OffsetLine), NO_EXTRA },
+   { GL_POLYGON_SMOOTH, CONTEXT_BOOL(Polygon.SmoothFlag), NO_EXTRA },
+   { GL_POLYGON_SMOOTH_HINT, CONTEXT_ENUM(Hint.PolygonSmooth), NO_EXTRA },
+   { GL_POLYGON_STIPPLE, CONTEXT_BOOL(Polygon.StippleFlag), NO_EXTRA },
+   { GL_READ_BUFFER, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
+   { GL_RED_BIAS, CONTEXT_FLOAT(Pixel.RedBias), NO_EXTRA },
+   { GL_RED_SCALE, CONTEXT_FLOAT(Pixel.RedScale), NO_EXTRA },
+   { GL_RENDER_MODE, CONTEXT_ENUM(RenderMode), NO_EXTRA },
+   { GL_RGBA_MODE, CONST(1), NO_EXTRA },
+   { GL_SELECTION_BUFFER_SIZE, CONTEXT_INT(Select.BufferSize), NO_EXTRA },
+   { GL_SHARED_TEXTURE_PALETTE_EXT, CONTEXT_BOOL(Texture.SharedPalette), NO_EXTRA },
+
+   { GL_STEREO, BUFFER_INT(Visual.stereoMode), NO_EXTRA },
+
+   { GL_TEXTURE_1D, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
+   { GL_TEXTURE_3D, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
+   { GL_TEXTURE_1D_ARRAY_EXT, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
+   { GL_TEXTURE_2D_ARRAY_EXT, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
+
+   { GL_TEXTURE_BINDING_1D, LOC_CUSTOM, TYPE_INT, TEXTURE_1D_INDEX, NO_EXTRA },
+   { GL_TEXTURE_BINDING_1D_ARRAY, LOC_CUSTOM, TYPE_INT,
+     TEXTURE_1D_ARRAY_INDEX, extra_MESA_texture_array },
+   { GL_TEXTURE_BINDING_2D_ARRAY, LOC_CUSTOM, TYPE_INT,
+     TEXTURE_1D_ARRAY_INDEX, extra_MESA_texture_array },
+   { GL_MAX_ARRAY_TEXTURE_LAYERS_EXT,
+     CONTEXT_INT(Const.MaxArrayTextureLayers), extra_MESA_texture_array },
+
+   { GL_TEXTURE_GEN_S, LOC_TEXUNIT, TYPE_BIT_0,
+     offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
+   { GL_TEXTURE_GEN_T, LOC_TEXUNIT, TYPE_BIT_1,
+     offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
+   { GL_TEXTURE_GEN_R, LOC_TEXUNIT, TYPE_BIT_2,
+     offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
+   { GL_TEXTURE_GEN_Q, LOC_TEXUNIT, TYPE_BIT_3,
+     offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
+   { GL_UNPACK_LSB_FIRST, CONTEXT_BOOL(Unpack.LsbFirst), NO_EXTRA },
+   { GL_UNPACK_ROW_LENGTH, CONTEXT_INT(Unpack.RowLength), NO_EXTRA },
+   { GL_UNPACK_SKIP_PIXELS, CONTEXT_INT(Unpack.SkipPixels), NO_EXTRA },
+   { GL_UNPACK_SKIP_ROWS, CONTEXT_INT(Unpack.SkipRows), NO_EXTRA },
+   { GL_UNPACK_SWAP_BYTES, CONTEXT_BOOL(Unpack.SwapBytes), NO_EXTRA },
+   { GL_UNPACK_SKIP_IMAGES_EXT, CONTEXT_INT(Unpack.SkipImages), NO_EXTRA },
+   { GL_UNPACK_IMAGE_HEIGHT_EXT, CONTEXT_INT(Unpack.ImageHeight), NO_EXTRA },
+   { GL_UNPACK_CLIENT_STORAGE_APPLE, CONTEXT_BOOL(Unpack.ClientStorage), NO_EXTRA },
+   { GL_ZOOM_X, CONTEXT_FLOAT(Pixel.ZoomX), NO_EXTRA },
+   { GL_ZOOM_Y, CONTEXT_FLOAT(Pixel.ZoomY), NO_EXTRA },
+
+   /* Vertex arrays */
+   { GL_VERTEX_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
+   { GL_NORMAL_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
+   { GL_COLOR_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
+   { GL_INDEX_ARRAY, ARRAY_BOOL(Index.Enabled), NO_EXTRA },
+   { GL_INDEX_ARRAY_TYPE, ARRAY_ENUM(Index.Type), NO_EXTRA },
+   { GL_INDEX_ARRAY_STRIDE, ARRAY_INT(Index.Stride), NO_EXTRA },
+   { GL_INDEX_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
+   { GL_TEXTURE_COORD_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
+   { GL_EDGE_FLAG_ARRAY, ARRAY_BOOL(EdgeFlag.Enabled), NO_EXTRA },
+   { GL_EDGE_FLAG_ARRAY_STRIDE, ARRAY_INT(EdgeFlag.Stride), NO_EXTRA },
+   { GL_EDGE_FLAG_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
+
+   /* GL_ARB_texture_compression */
+   { GL_TEXTURE_COMPRESSION_HINT_ARB, CONTEXT_INT(Hint.TextureCompression), NO_EXTRA },
+
+   /* GL_EXT_compiled_vertex_array */
+   { GL_ARRAY_ELEMENT_LOCK_FIRST_EXT, CONTEXT_INT(Array.LockFirst),
+     extra_EXT_compiled_vertex_array },
+   { GL_ARRAY_ELEMENT_LOCK_COUNT_EXT, CONTEXT_INT(Array.LockCount),
+     extra_EXT_compiled_vertex_array },
+
+   /* GL_ARB_transpose_matrix */
+   { GL_TRANSPOSE_MODELVIEW_MATRIX_ARB,
+     CONTEXT_MATRIX_T(ModelviewMatrixStack), NO_EXTRA },
+   { GL_TRANSPOSE_PROJECTION_MATRIX_ARB,
+     CONTEXT_MATRIX_T(ProjectionMatrixStack.Top), NO_EXTRA },
+   { GL_TRANSPOSE_TEXTURE_MATRIX_ARB, CONTEXT_MATRIX_T(TextureMatrixStack), NO_EXTRA },
+
+   /* GL_EXT_secondary_color */
+   { GL_COLOR_SUM_EXT, CONTEXT_BOOL(Fog.ColorSumEnabled),
+     extra_EXT_secondary_color_ARB_vertex_program },
+   { GL_CURRENT_SECONDARY_COLOR_EXT,
+     CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR1][0], TYPE_FLOATN_4),
+     extra_EXT_secondary_color_flush_current },
+   { GL_SECONDARY_COLOR_ARRAY_EXT, ARRAY_BOOL(SecondaryColor.Enabled),
+     extra_EXT_secondary_color },
+   { GL_SECONDARY_COLOR_ARRAY_TYPE_EXT, ARRAY_ENUM(SecondaryColor.Type),
+     extra_EXT_secondary_color },
+   { GL_SECONDARY_COLOR_ARRAY_STRIDE_EXT, ARRAY_INT(SecondaryColor.Stride),
+     extra_EXT_secondary_color },
+   { GL_SECONDARY_COLOR_ARRAY_SIZE_EXT, ARRAY_INT(SecondaryColor.Size),
+     extra_EXT_secondary_color },
+
+   /* GL_EXT_fog_coord */
+   { GL_CURRENT_FOG_COORDINATE_EXT,
+     CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_FOG][0]),
+     extra_EXT_fog_coord_flush_current },
+   { GL_FOG_COORDINATE_ARRAY_EXT, ARRAY_BOOL(FogCoord.Enabled),
+     extra_EXT_fog_coord },
+   { GL_FOG_COORDINATE_ARRAY_TYPE_EXT, ARRAY_ENUM(FogCoord.Type),
+     extra_EXT_fog_coord },
+   { GL_FOG_COORDINATE_ARRAY_STRIDE_EXT, ARRAY_INT(FogCoord.Stride),
+     extra_EXT_fog_coord },
+   { GL_FOG_COORDINATE_SOURCE_EXT, CONTEXT_ENUM(Fog.FogCoordinateSource),
+     extra_EXT_fog_coord },
+
+   /* GL_IBM_rasterpos_clip */
+   { GL_RASTER_POSITION_UNCLIPPED_IBM,
+     CONTEXT_BOOL(Transform.RasterPositionUnclipped),
+     extra_IBM_rasterpos_clip },
+
+   /* GL_NV_point_sprite */
+   { GL_POINT_SPRITE_R_MODE_NV,
+     CONTEXT_ENUM(Point.SpriteRMode), extra_NV_point_sprite },
+   { GL_POINT_SPRITE_COORD_ORIGIN, CONTEXT_ENUM(Point.SpriteOrigin),
+     extra_NV_point_sprite_ARB_point_sprite },
+
+   /* GL_NV_vertex_program */
+   { GL_VERTEX_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY0_NV, ARRAY_BOOL(VertexAttrib[0].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY1_NV, ARRAY_BOOL(VertexAttrib[1].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY2_NV, ARRAY_BOOL(VertexAttrib[2].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY3_NV, ARRAY_BOOL(VertexAttrib[3].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY4_NV, ARRAY_BOOL(VertexAttrib[4].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY5_NV, ARRAY_BOOL(VertexAttrib[5].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY6_NV, ARRAY_BOOL(VertexAttrib[6].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY7_NV, ARRAY_BOOL(VertexAttrib[7].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY8_NV, ARRAY_BOOL(VertexAttrib[8].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY9_NV, ARRAY_BOOL(VertexAttrib[9].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY10_NV, ARRAY_BOOL(VertexAttrib[10].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY11_NV, ARRAY_BOOL(VertexAttrib[11].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY12_NV, ARRAY_BOOL(VertexAttrib[12].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY13_NV, ARRAY_BOOL(VertexAttrib[13].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY14_NV, ARRAY_BOOL(VertexAttrib[14].Enabled),
+     extra_NV_vertex_program },
+   { GL_VERTEX_ATTRIB_ARRAY15_NV, ARRAY_BOOL(VertexAttrib[15].Enabled),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB0_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[0]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB1_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[1]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB2_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[2]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB3_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[3]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB4_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[4]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB5_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[5]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB6_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[6]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB7_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[7]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB8_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[8]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB9_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[9]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB10_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[10]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB11_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[11]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB12_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[12]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB13_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[13]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB14_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[14]),
+     extra_NV_vertex_program },
+   { GL_MAP1_VERTEX_ATTRIB15_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[15]),
+     extra_NV_vertex_program },
+
+   /* GL_NV_fragment_program */
+   { GL_FRAGMENT_PROGRAM_NV, CONTEXT_BOOL(FragmentProgram.Enabled),
+     extra_NV_fragment_program },
+   { GL_FRAGMENT_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,
+     extra_NV_fragment_program },
+   { GL_MAX_FRAGMENT_PROGRAM_LOCAL_PARAMETERS_NV,
+     CONST(MAX_NV_FRAGMENT_PROGRAM_PARAMS),
+     extra_NV_fragment_program },
+
+   /* GL_NV_texture_rectangle */
+   { GL_TEXTURE_RECTANGLE_NV,
+     LOC_CUSTOM, TYPE_BOOLEAN, 0, extra_NV_texture_rectangle },
+   { GL_TEXTURE_BINDING_RECTANGLE_NV,
+     LOC_CUSTOM, TYPE_INT, TEXTURE_RECT_INDEX, extra_NV_texture_rectangle },
+   { GL_MAX_RECTANGLE_TEXTURE_SIZE_NV,
+     CONTEXT_INT(Const.MaxTextureRectSize), extra_NV_texture_rectangle },
+
+   /* GL_EXT_stencil_two_side */
+   { GL_STENCIL_TEST_TWO_SIDE_EXT, CONTEXT_BOOL(Stencil.TestTwoSide),
+	 extra_EXT_stencil_two_side },
+   { GL_ACTIVE_STENCIL_FACE_EXT, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
+
+   /* GL_NV_light_max_exponent */
+   { GL_MAX_SHININESS_NV, CONTEXT_FLOAT(Const.MaxShininess),
+     extra_NV_light_max_exponent },
+   { GL_MAX_SPOT_EXPONENT_NV, CONTEXT_FLOAT(Const.MaxSpotExponent),
+     extra_NV_light_max_exponent },
+     
+   /* GL_NV_primitive_restart */
+   { GL_PRIMITIVE_RESTART_NV, CONTEXT_BOOL(Array.PrimitiveRestart),
+     extra_NV_primitive_restart },
+   { GL_PRIMITIVE_RESTART_INDEX_NV, CONTEXT_INT(Array.RestartIndex),
+     extra_NV_primitive_restart },
+ 
+   /* GL_ARB_vertex_buffer_object */
+   { GL_INDEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
+     offsetof(struct gl_array_object, Index.BufferObj), NO_EXTRA },
+   { GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
+     offsetof(struct gl_array_object, EdgeFlag.BufferObj), NO_EXTRA },
+   { GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
+     offsetof(struct gl_array_object, SecondaryColor.BufferObj), NO_EXTRA },
+   { GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
+     offsetof(struct gl_array_object, FogCoord.BufferObj), NO_EXTRA },
+
+   /* GL_EXT_pixel_buffer_object */
+   { GL_PIXEL_PACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
+     extra_EXT_pixel_buffer_object },
+   { GL_PIXEL_UNPACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
+     extra_EXT_pixel_buffer_object },
+
+   /* GL_ARB_vertex_program */
+   { GL_VERTEX_PROGRAM_ARB, /* == GL_VERTEX_PROGRAM_NV */
+     CONTEXT_BOOL(VertexProgram.Enabled),
+     extra_ARB_vertex_program_NV_vertex_program },
+   { GL_VERTEX_PROGRAM_POINT_SIZE_ARB, /* == GL_VERTEX_PROGRAM_POINT_SIZE_NV*/
+     CONTEXT_BOOL(VertexProgram.PointSizeEnabled),
+     extra_ARB_vertex_program_NV_vertex_program },
+   { GL_VERTEX_PROGRAM_TWO_SIDE_ARB, /* == GL_VERTEX_PROGRAM_TWO_SIDE_NV */
+     CONTEXT_BOOL(VertexProgram.TwoSideEnabled),
+     extra_ARB_vertex_program_NV_vertex_program },
+   { GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB, /* == GL_MAX_TRACK_MATRIX_STACK_DEPTH_NV */
+     CONTEXT_INT(Const.MaxProgramMatrixStackDepth),
+     extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
+   { GL_MAX_PROGRAM_MATRICES_ARB, /* == GL_MAX_TRACK_MATRICES_NV */
+     CONTEXT_INT(Const.MaxProgramMatrices),
+     extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
+   { GL_CURRENT_MATRIX_STACK_DEPTH_ARB, /* == GL_CURRENT_MATRIX_STACK_DEPTH_NV */
+     LOC_CUSTOM, TYPE_INT, 0,
+     extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
+
+   { GL_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */
+     LOC_CUSTOM, TYPE_MATRIX, 0,
+     extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
+   { GL_TRANSPOSE_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */
+     LOC_CUSTOM, TYPE_MATRIX, 0,
+     extra_ARB_vertex_program_ARB_fragment_program },
+
+   { GL_PROGRAM_ERROR_POSITION_ARB, /* == GL_PROGRAM_ERROR_POSITION_NV */
+     CONTEXT_INT(Program.ErrorPos),
+     extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
+
+   /* GL_ARB_fragment_program */
+   { GL_FRAGMENT_PROGRAM_ARB, CONTEXT_BOOL(FragmentProgram.Enabled),
+     extra_ARB_fragment_program },
+
+   /* GL_EXT_depth_bounds_test */
+   { GL_DEPTH_BOUNDS_TEST_EXT, CONTEXT_BOOL(Depth.BoundsTest),
+     extra_EXT_depth_bounds_test },
+   { GL_DEPTH_BOUNDS_EXT, CONTEXT_FLOAT2(Depth.BoundsMin),
+     extra_EXT_depth_bounds_test },
+
+   /* GL_ARB_depth_clamp*/
+   { GL_DEPTH_CLAMP, CONTEXT_BOOL(Transform.DepthClamp),
+     extra_ARB_depth_clamp },
+
+   /* GL_ARB_draw_buffers */
+   { GL_DRAW_BUFFER0_ARB, BUFFER_ENUM(ColorDrawBuffer[0]), NO_EXTRA },
+   { GL_DRAW_BUFFER1_ARB, BUFFER_ENUM(ColorDrawBuffer[1]),
+     extra_valid_draw_buffer },
+   { GL_DRAW_BUFFER2_ARB, BUFFER_ENUM(ColorDrawBuffer[2]),
+     extra_valid_draw_buffer },
+   { GL_DRAW_BUFFER3_ARB, BUFFER_ENUM(ColorDrawBuffer[3]),
+     extra_valid_draw_buffer },
+   { GL_DRAW_BUFFER4_ARB, BUFFER_ENUM(ColorDrawBuffer[4]),
+     extra_valid_draw_buffer },
+   { GL_DRAW_BUFFER5_ARB, BUFFER_ENUM(ColorDrawBuffer[5]),
+     extra_valid_draw_buffer },
+   { GL_DRAW_BUFFER6_ARB, BUFFER_ENUM(ColorDrawBuffer[6]),
+     extra_valid_draw_buffer },
+   { GL_DRAW_BUFFER7_ARB, BUFFER_ENUM(ColorDrawBuffer[7]),
+     extra_valid_draw_buffer },
+
+   /* GL_ATI_fragment_shader */
+   { GL_NUM_FRAGMENT_REGISTERS_ATI, CONST(6), extra_ATI_fragment_shader },
+   { GL_NUM_FRAGMENT_CONSTANTS_ATI, CONST(8), extra_ATI_fragment_shader },
+   { GL_NUM_PASSES_ATI, CONST(2), extra_ATI_fragment_shader },
+   { GL_NUM_INSTRUCTIONS_PER_PASS_ATI, CONST(8), extra_ATI_fragment_shader },
+   { GL_NUM_INSTRUCTIONS_TOTAL_ATI, CONST(16), extra_ATI_fragment_shader },
+   { GL_COLOR_ALPHA_PAIRING_ATI, CONST(GL_TRUE), extra_ATI_fragment_shader },
+   { GL_NUM_LOOPBACK_COMPONENTS_ATI, CONST(3), extra_ATI_fragment_shader },
+   { GL_NUM_INPUT_INTERPOLATOR_COMPONENTS_ATI,
+     CONST(3), extra_ATI_fragment_shader },
+
+   /* GL_EXT_framebuffer_object */
+   { GL_MAX_COLOR_ATTACHMENTS_EXT, CONTEXT_INT(Const.MaxColorAttachments),
+     extra_EXT_framebuffer_object },
+   
+   /* GL_EXT_framebuffer_blit
+    * NOTE: GL_DRAW_FRAMEBUFFER_BINDING_EXT == GL_FRAMEBUFFER_BINDING_EXT */
+   { GL_READ_FRAMEBUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
+     extra_EXT_framebuffer_blit },
+
+   /* GL_EXT_provoking_vertex */
+   { GL_PROVOKING_VERTEX_EXT,
+     CONTEXT_BOOL(Light.ProvokingVertex), extra_EXT_provoking_vertex },
+   { GL_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION_EXT,
+     CONTEXT_BOOL(Const.QuadsFollowProvokingVertexConvention),
+     extra_EXT_provoking_vertex },
+
+   /* GL_ARB_framebuffer_object */
+   { GL_MAX_SAMPLES, CONTEXT_INT(Const.MaxSamples),
+     extra_ARB_framebuffer_object_EXT_framebuffer_multisample },
+
+   /* GL_APPLE_vertex_array_object */
+   { GL_VERTEX_ARRAY_BINDING_APPLE, ARRAY_INT(Name),
+     extra_APPLE_vertex_array_object },
+
+   /* GL_ARB_seamless_cube_map */
+   { GL_TEXTURE_CUBE_MAP_SEAMLESS,
+     CONTEXT_BOOL(Texture.CubeMapSeamless), extra_ARB_seamless_cube_map },
+
+   /* GL_ARB_sync */
+   { GL_MAX_SERVER_WAIT_TIMEOUT,
+     CONTEXT_INT64(Const.MaxServerWaitTimeout), extra_ARB_sync },
+
+   /* GL_EXT_texture_integer */
+   { GL_RGBA_INTEGER_MODE_EXT, BUFFER_BOOL(_IntegerColor),
+     extra_EXT_texture_integer },
+
+   /* GL_EXT_transform_feedback */
+   { GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, LOC_CUSTOM, TYPE_INT, 0,
+     extra_EXT_transform_feedback },
+   { GL_RASTERIZER_DISCARD, CONTEXT_BOOL(TransformFeedback.RasterDiscard),
+     extra_EXT_transform_feedback },
+   { GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS,
+     CONTEXT_INT(Const.MaxTransformFeedbackInterleavedComponents),
+     extra_EXT_transform_feedback },
+   { GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS,
+     CONTEXT_INT(Const.MaxTransformFeedbackSeparateAttribs),
+     extra_EXT_transform_feedback },
+   { GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS,
+     CONTEXT_INT(Const.MaxTransformFeedbackSeparateComponents),
+     extra_EXT_transform_feedback },
+
+   /* GL_ARB_transform_feedback2 */
+   { GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED, LOC_CUSTOM, TYPE_BOOLEAN, 0,
+     extra_ARB_transform_feedback2 },
+   { GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE, LOC_CUSTOM, TYPE_BOOLEAN, 0,
+     extra_ARB_transform_feedback2 },
+   { GL_TRANSFORM_FEEDBACK_BINDING, LOC_CUSTOM, TYPE_INT, 0,
+     extra_ARB_transform_feedback2 },
+
+   /* GL_ARB_geometry_shader4 */
+   { GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_ARB,
+     CONTEXT_INT(Const.GeometryProgram.MaxGeometryTextureImageUnits),
+     extra_ARB_geometry_shader4 },
+   { GL_MAX_GEOMETRY_OUTPUT_VERTICES_ARB,
+     CONTEXT_INT(Const.GeometryProgram.MaxGeometryOutputVertices),
+     extra_ARB_geometry_shader4 },
+   { GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_ARB,
+     CONTEXT_INT(Const.GeometryProgram.MaxGeometryTotalOutputComponents),
+     extra_ARB_geometry_shader4 },
+   { GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_ARB,
+     CONTEXT_INT(Const.GeometryProgram.MaxGeometryUniformComponents),
+     extra_ARB_geometry_shader4 },
+   { GL_MAX_GEOMETRY_VARYING_COMPONENTS_ARB,
+     CONTEXT_INT(Const.GeometryProgram.MaxGeometryVaryingComponents),
+     extra_ARB_geometry_shader4 },
+   { GL_MAX_VERTEX_VARYING_COMPONENTS_ARB,
+     CONTEXT_INT(Const.GeometryProgram.MaxVertexVaryingComponents),
+     extra_ARB_geometry_shader4 },
+
+   /* GL_EXT_gpu_shader4 / GL 3.0 */
+   { GL_MIN_PROGRAM_TEXEL_OFFSET,
+     CONTEXT_INT(Const.MinProgramTexelOffset),
+     extra_EXT_gpu_shader4 },
+   { GL_MAX_PROGRAM_TEXEL_OFFSET,
+     CONTEXT_INT(Const.MaxProgramTexelOffset),
+     extra_EXT_gpu_shader4 },
+
+   /* GL 3.0 */
+   { GL_NUM_EXTENSIONS, LOC_CUSTOM, TYPE_INT, 0, extra_version_30 },
+   { GL_MAJOR_VERSION, CONTEXT_INT(VersionMajor), extra_version_30 },
+   { GL_MINOR_VERSION, CONTEXT_INT(VersionMinor), extra_version_30  },
+   { GL_CONTEXT_FLAGS, CONTEXT_INT(Const.ContextFlags), extra_version_30  },
+
+   /* GL3.0 / GL_EXT_framebuffer_sRGB */
+   { GL_FRAMEBUFFER_SRGB_EXT, CONTEXT_BOOL(Color.sRGBEnabled), extra_EXT_framebuffer_sRGB },
+   { GL_FRAMEBUFFER_SRGB_CAPABLE_EXT, BUFFER_INT(Visual.sRGBCapable), extra_EXT_framebuffer_sRGB },
+
+   /* GL 3.1 */
+   /* NOTE: different enum values for GL_PRIMITIVE_RESTART_NV
+    * vs. GL_PRIMITIVE_RESTART!
+    */
+   { GL_PRIMITIVE_RESTART, CONTEXT_BOOL(Array.PrimitiveRestart),
+     extra_version_31 },
+   { GL_PRIMITIVE_RESTART_INDEX, CONTEXT_INT(Array.RestartIndex),
+     extra_version_31 },
+ 
+
+   /* GL 3.2 */
+   { GL_CONTEXT_PROFILE_MASK, CONTEXT_INT(Const.ProfileMask),
+     extra_version_32 },
+#endif /* FEATURE_GL */
+};
+
+/* All we need now is a way to look up the value struct from the enum.
+ * The code generated by gcc for the old generated big switch
+ * statement is a big, balanced, open coded if/else tree, essentially
+ * an unrolled binary search.  It would be natural to sort the new
+ * enum table and use bsearch(), but we will use a read-only hash
+ * table instead.  bsearch() has a nice guaranteed worst case
+ * performance, but we're also guaranteed to hit that worst case
+ * (log2(n) iterations) for about half the enums.  Instead, using an
+ * open addressing hash table, we can find the enum on the first try
+ * for 80% of the enums, 1 collision for 10% and never more than 5
+ * collisions for any enum (typical numbers).  And the code is very
+ * simple, even though it feels a little magic. */
+
+static unsigned short table[1024];
+static const int prime_factor = 89, prime_step = 281;
+
+#ifdef GET_DEBUG
+static void
+print_table_stats(void)
+{
+   int i, j, collisions[11], count, hash, mask;
+   const struct value_desc *d;
+
+   count = 0;
+   mask = Elements(table) - 1;
+   memset(collisions, 0, sizeof collisions);
+
+   for (i = 0; i < Elements(table); i++) {
+      if (!table[i])
+	 continue;
+      count++;
+      d = &values[table[i]];
+      hash = (d->pname * prime_factor);
+      j = 0;
+      while (1) {
+	 if (values[table[hash & mask]].pname == d->pname)
+	    break;
+	 hash += prime_step;
+	 j++;
+      }
+
+      if (j < 10)
+	 collisions[j]++;
+      else
+	 collisions[10]++;
+   }
+
+   printf("number of enums: %d (total %d)\n", count, Elements(values));
+   for (i = 0; i < Elements(collisions) - 1; i++)
+      if (collisions[i] > 0)
+	 printf("  %d enums with %d %scollisions\n",
+		collisions[i], i, i == 10 ? "or more " : "");
+}
+#endif
+
+/**
+ * Initialize the enum hash for a given API 
+ *
+ * This is called from one_time_init() to insert the enum values that
+ * are valid for the API in question into the enum hash table.
+ *
+ * \param the current context, for determining the API in question
+ */
+void _mesa_init_get_hash(struct gl_context *ctx)
+{
+   int i, hash, index, mask;
+   int api_mask = 0, api_bit;
+
+   mask = Elements(table) - 1;
+   api_bit = 1 << ctx->API;
+
+   for (i = 0; i < Elements(values); i++) {
+      if (values[i].type == TYPE_API_MASK) {
+	 api_mask = values[i].offset;
+	 continue;
+      }
+      if (!(api_mask & api_bit))
+	 continue;
+
+      hash = (values[i].pname * prime_factor) & mask;
+      while (1) {
+	 index = hash & mask;
+	 if (!table[index]) {
+	    table[index] = i;
+	    break;
+	 }
+	 hash += prime_step;
+      }
+   }
+
+#ifdef GET_DEBUG
+   print_table_stats();
+#endif
+}
+
+/**
+ * Handle irregular enums
+ *
+ * Some values don't conform to the "well-known type at context
+ * pointer + offset" pattern, so we have this function to catch all
+ * the corner cases.  Typically, it's a computed value or a one-off
+ * pointer to a custom struct or something.
+ *
+ * In this case we can't return a pointer to the value, so we'll have
+ * to use the temporary variable 'v' declared back in the calling
+ * glGet*v() function to store the result.
+ *
+ * \param ctx the current context
+ * \param d the struct value_desc that describes the enum
+ * \param v pointer to the tmp declared in the calling glGet*v() function
+ */
+static void
+find_custom_value(struct gl_context *ctx, const struct value_desc *d, union value *v)
+{
+   struct gl_buffer_object *buffer_obj;
+   struct gl_client_array *array;
+   GLuint unit, *p;
+
+   switch (d->pname) {
+   case GL_TEXTURE_1D:
+   case GL_TEXTURE_2D:
+   case GL_TEXTURE_3D:
+   case GL_TEXTURE_1D_ARRAY_EXT:
+   case GL_TEXTURE_2D_ARRAY_EXT:
+   case GL_TEXTURE_CUBE_MAP_ARB:
+   case GL_TEXTURE_RECTANGLE_NV:
+      v->value_bool = _mesa_IsEnabled(d->pname);
+      break;
+
+   case GL_LINE_STIPPLE_PATTERN:
+      /* This is the only GLushort, special case it here by promoting
+       * to an int rather than introducing a new type. */
+      v->value_int = ctx->Line.StipplePattern;
+      break;
+
+   case GL_CURRENT_RASTER_TEXTURE_COORDS:
+      unit = ctx->Texture.CurrentUnit;
+      v->value_float_4[0] = ctx->Current.RasterTexCoords[unit][0];
+      v->value_float_4[1] = ctx->Current.RasterTexCoords[unit][1];
+      v->value_float_4[2] = ctx->Current.RasterTexCoords[unit][2];
+      v->value_float_4[3] = ctx->Current.RasterTexCoords[unit][3];
+      break;
+
+   case GL_CURRENT_TEXTURE_COORDS:
+      unit = ctx->Texture.CurrentUnit;
+      v->value_float_4[0] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][0];
+      v->value_float_4[1] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][1];
+      v->value_float_4[2] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2];
+      v->value_float_4[3] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3];
+      break;
+
+   case GL_COLOR_WRITEMASK:
+      v->value_int_4[0] = ctx->Color.ColorMask[0][RCOMP] ? 1 : 0;
+      v->value_int_4[1] = ctx->Color.ColorMask[0][GCOMP] ? 1 : 0;
+      v->value_int_4[2] = ctx->Color.ColorMask[0][BCOMP] ? 1 : 0;
+      v->value_int_4[3] = ctx->Color.ColorMask[0][ACOMP] ? 1 : 0;
+      break;
+
+   case GL_EDGE_FLAG:
+      v->value_bool = ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0] == 1.0;
+      break;
+
+   case GL_READ_BUFFER:
+      v->value_enum = ctx->ReadBuffer->ColorReadBuffer;
+      break;
+
+   case GL_MAP2_GRID_DOMAIN:
+      v->value_float_4[0] = ctx->Eval.MapGrid2u1;
+      v->value_float_4[1] = ctx->Eval.MapGrid2u2;
+      v->value_float_4[2] = ctx->Eval.MapGrid2v1;
+      v->value_float_4[3] = ctx->Eval.MapGrid2v2;
+      break;
+
+   case GL_TEXTURE_STACK_DEPTH:
+      unit = ctx->Texture.CurrentUnit;
+      v->value_int = ctx->TextureMatrixStack[unit].Depth + 1;
+      break;
+   case GL_TEXTURE_MATRIX:
+      unit = ctx->Texture.CurrentUnit;
+      v->value_matrix = ctx->TextureMatrixStack[unit].Top;
+      break;
+
+   case GL_TEXTURE_COORD_ARRAY:
+   case GL_TEXTURE_COORD_ARRAY_SIZE:
+   case GL_TEXTURE_COORD_ARRAY_TYPE:
+   case GL_TEXTURE_COORD_ARRAY_STRIDE:
+      array = &ctx->Array.ArrayObj->TexCoord[ctx->Array.ActiveTexture];
+      v->value_int = *(GLuint *) ((char *) array + d->offset);
+      break;
+
+   case GL_ACTIVE_TEXTURE_ARB:
+      v->value_int = GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit;
+      break;
+   case GL_CLIENT_ACTIVE_TEXTURE_ARB:
+      v->value_int = GL_TEXTURE0_ARB + ctx->Array.ActiveTexture;
+      break;
+
+   case GL_MODELVIEW_STACK_DEPTH:
+   case GL_PROJECTION_STACK_DEPTH:
+      v->value_int = *(GLint *) ((char *) ctx + d->offset) + 1;
+      break;
+
+   case GL_MAX_TEXTURE_SIZE:
+   case GL_MAX_3D_TEXTURE_SIZE:
+   case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
+      p = (GLuint *) ((char *) ctx + d->offset);
+      v->value_int = 1 << (*p - 1);
+      break;
+
+   case GL_SCISSOR_BOX:
+      v->value_int_4[0] = ctx->Scissor.X;
+      v->value_int_4[1] = ctx->Scissor.Y;
+      v->value_int_4[2] = ctx->Scissor.Width;
+      v->value_int_4[3] = ctx->Scissor.Height;
+      break;
+
+   case GL_LIST_INDEX:
+      v->value_int =
+	 ctx->ListState.CurrentList ? ctx->ListState.CurrentList->Name : 0;
+      break;
+   case GL_LIST_MODE:
+      if (!ctx->CompileFlag)
+	 v->value_enum = 0;
+      else if (ctx->ExecuteFlag)
+	 v->value_enum = GL_COMPILE_AND_EXECUTE;
+      else
+	 v->value_enum = GL_COMPILE;
+      break;
+
+   case GL_VIEWPORT:
+      v->value_int_4[0] = ctx->Viewport.X;
+      v->value_int_4[1] = ctx->Viewport.Y;
+      v->value_int_4[2] = ctx->Viewport.Width;
+      v->value_int_4[3] = ctx->Viewport.Height;
+      break;
+
+   case GL_ACTIVE_STENCIL_FACE_EXT:
+      v->value_enum = ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT;
+      break;
+
+   case GL_STENCIL_FAIL:
+      v->value_enum = ctx->Stencil.FailFunc[ctx->Stencil.ActiveFace];
+      break;
+   case GL_STENCIL_FUNC:
+      v->value_enum = ctx->Stencil.Function[ctx->Stencil.ActiveFace];
+      break;
+   case GL_STENCIL_PASS_DEPTH_FAIL:
+      v->value_enum = ctx->Stencil.ZFailFunc[ctx->Stencil.ActiveFace];
+      break;
+   case GL_STENCIL_PASS_DEPTH_PASS:
+      v->value_enum = ctx->Stencil.ZPassFunc[ctx->Stencil.ActiveFace];
+      break;
+   case GL_STENCIL_REF:
+      v->value_int = ctx->Stencil.Ref[ctx->Stencil.ActiveFace];
+      break;
+   case GL_STENCIL_VALUE_MASK:
+      v->value_int = ctx->Stencil.ValueMask[ctx->Stencil.ActiveFace];
+      break;
+   case GL_STENCIL_WRITEMASK:
+      v->value_int = ctx->Stencil.WriteMask[ctx->Stencil.ActiveFace];
+      break;
+
+   case GL_NUM_EXTENSIONS:
+      v->value_int = _mesa_get_extension_count(ctx);
+      break;
+
+   case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
+      v->value_int = _mesa_get_color_read_type(ctx);
+      break;
+   case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
+      v->value_int = _mesa_get_color_read_format(ctx);
+      break;
+
+   case GL_CURRENT_MATRIX_STACK_DEPTH_ARB:
+      v->value_int = ctx->CurrentStack->Depth + 1;
+      break;
+   case GL_CURRENT_MATRIX_ARB:
+   case GL_TRANSPOSE_CURRENT_MATRIX_ARB:
+      v->value_matrix = ctx->CurrentStack->Top;
+      break;
+
+   case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
+      v->value_int = _mesa_get_compressed_formats(ctx, NULL, GL_FALSE);
+      break;
+   case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
+      v->value_int_n.n = 
+	 _mesa_get_compressed_formats(ctx, v->value_int_n.ints, GL_FALSE);
+      ASSERT(v->value_int_n.n <= 100);
+      break;
+
+   case GL_MAX_VARYING_FLOATS_ARB:
+      v->value_int = ctx->Const.MaxVarying * 4;
+      break;
+
+   /* Various object names */
+
+   case GL_TEXTURE_BINDING_1D:
+   case GL_TEXTURE_BINDING_2D:
+   case GL_TEXTURE_BINDING_3D:
+   case GL_TEXTURE_BINDING_1D_ARRAY_EXT:
+   case GL_TEXTURE_BINDING_2D_ARRAY_EXT:
+   case GL_TEXTURE_BINDING_CUBE_MAP_ARB:
+   case GL_TEXTURE_BINDING_RECTANGLE_NV:
+      unit = ctx->Texture.CurrentUnit;
+      v->value_int =
+	 ctx->Texture.Unit[unit].CurrentTex[d->offset]->Name;
+      break;
+
+   /* GL_ARB_vertex_buffer_object */
+   case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB:
+   case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB:
+   case GL_COLOR_ARRAY_BUFFER_BINDING_ARB:
+   case GL_INDEX_ARRAY_BUFFER_BINDING_ARB:
+   case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB:
+   case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB:
+   case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB:
+      buffer_obj = (struct gl_buffer_object *)
+	 ((char *) ctx->Array.ArrayObj + d->offset);
+      v->value_int = buffer_obj->Name;
+      break;
+   case GL_ARRAY_BUFFER_BINDING_ARB:
+      v->value_int = ctx->Array.ArrayBufferObj->Name;
+      break;
+   case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:
+      v->value_int =
+	 ctx->Array.ArrayObj->TexCoord[ctx->Array.ActiveTexture].BufferObj->Name;
+      break;
+   case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:
+      v->value_int = ctx->Array.ElementArrayBufferObj->Name;
+      break;
+
+   /* ARB_copy_buffer */
+   case GL_COPY_READ_BUFFER:
+      v->value_int = ctx->CopyReadBuffer->Name;
+      break;
+   case GL_COPY_WRITE_BUFFER:
+      v->value_int = ctx->CopyWriteBuffer->Name;
+      break;
+
+   case GL_FRAGMENT_PROGRAM_BINDING_NV:
+      v->value_int = 
+	 ctx->FragmentProgram.Current ? ctx->FragmentProgram.Current->Base.Id : 0;
+      break;
+   case GL_VERTEX_PROGRAM_BINDING_NV:
+      v->value_int =
+	 ctx->VertexProgram.Current ? ctx->VertexProgram.Current->Base.Id : 0;
+      break;
+   case GL_PIXEL_PACK_BUFFER_BINDING_EXT:
+      v->value_int = ctx->Pack.BufferObj->Name;
+      break;
+   case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:
+      v->value_int = ctx->Unpack.BufferObj->Name;
+      break;
+   case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
+      v->value_int = ctx->TransformFeedback.CurrentBuffer->Name;
+      break;
+   case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED:
+      v->value_int = ctx->TransformFeedback.CurrentObject->Paused;
+      break;
+   case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE:
+      v->value_int = ctx->TransformFeedback.CurrentObject->Active;
+      break;
+   case GL_TRANSFORM_FEEDBACK_BINDING:
+      v->value_int = ctx->TransformFeedback.CurrentObject->Name;
+      break;
+   case GL_CURRENT_PROGRAM:
+      v->value_int =
+	 ctx->Shader.ActiveProgram ? ctx->Shader.ActiveProgram->Name : 0;
+      break;
+   case GL_READ_FRAMEBUFFER_BINDING_EXT:
+      v->value_int = ctx->ReadBuffer->Name;
+      break;
+   case GL_RENDERBUFFER_BINDING_EXT:
+      v->value_int =
+	 ctx->CurrentRenderbuffer ? ctx->CurrentRenderbuffer->Name : 0;
+      break;
+   case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
+      v->value_int = ctx->Array.ArrayObj->PointSize.BufferObj->Name;
+      break;
+
+   case GL_MAX_VERTEX_UNIFORM_VECTORS:
+      v->value_int = ctx->Const.VertexProgram.MaxUniformComponents / 4;
+      break;
+
+   case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
+      v->value_int = ctx->Const.FragmentProgram.MaxUniformComponents / 4;
+      break;
+   }   
+}
+
+/**
+ * Check extra constraints on a struct value_desc descriptor
+ *
+ * If a struct value_desc has a non-NULL extra pointer, it means that
+ * there are a number of extra constraints to check or actions to
+ * perform.  The extras is just an integer array where each integer
+ * encode different constraints or actions.
+ *
+ * \param ctx current context
+ * \param func name of calling glGet*v() function for error reporting
+ * \param d the struct value_desc that has the extra constraints
+ *
+ * \return GL_FALSE if one of the constraints was not satisfied,
+ *     otherwise GL_TRUE.
+ */
+static GLboolean
+check_extra(struct gl_context *ctx, const char *func, const struct value_desc *d)
+{
+   const GLuint version = ctx->VersionMajor * 10 + ctx->VersionMinor;
+   int total, enabled;
+   const int *e;
+
+   total = 0;
+   enabled = 0;
+   for (e = d->extra; *e != EXTRA_END; e++)
+      switch (*e) {
+      case EXTRA_VERSION_30:
+	 if (version >= 30) {
+	    total++;
+	    enabled++;
+	 }
+	 break;
+      case EXTRA_VERSION_31:
+	 if (version >= 31) {
+	    total++;
+	    enabled++;
+	 }
+	 break;
+      case EXTRA_VERSION_32:
+	 if (version >= 32) {
+	    total++;
+	    enabled++;
+	 }
+	 break;
+      case EXTRA_VERSION_ES2:
+	 if (ctx->API == API_OPENGLES2) {
+	    total++;
+	    enabled++;
+	 }
+	 break;
+      case EXTRA_NEW_BUFFERS:
+	 if (ctx->NewState & _NEW_BUFFERS)
+	    _mesa_update_state(ctx);
+	 break;
+      case EXTRA_FLUSH_CURRENT:
+	 FLUSH_CURRENT(ctx, 0);
+	 break;
+      case EXTRA_VALID_DRAW_BUFFER:
+	 if (d->pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
+	    _mesa_error(ctx, GL_INVALID_OPERATION, "%s(draw buffer %u)",
+			func, d->pname - GL_DRAW_BUFFER0_ARB);
+	    return GL_FALSE;
+	 }
+	 break;
+      case EXTRA_VALID_TEXTURE_UNIT:
+	 if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
+	    _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture %u)",
+			func, ctx->Texture.CurrentUnit);
+	    return GL_FALSE;
+	 }
+	 break;
+      case EXTRA_END:
+	 break;
+      default: /* *e is a offset into the extension struct */
+	 total++;
+	 if (*(GLboolean *) ((char *) &ctx->Extensions + *e))
+	    enabled++;
+	 break;
+      }
+
+   if (total > 0 && enabled == 0) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
+                  _mesa_lookup_enum_by_nr(d->pname));
+      return GL_FALSE;
+   }
+
+   return GL_TRUE;
+}
+
+static const struct value_desc error_value =
+   { 0, 0, TYPE_INVALID, NO_OFFSET, NO_EXTRA };
+
+/**
+ * Find the struct value_desc corresponding to the enum 'pname'.
+ * 
+ * We hash the enum value to get an index into the 'table' array,
+ * which holds the index in the 'values' array of struct value_desc.
+ * Once we've found the entry, we do the extra checks, if any, then
+ * look up the value and return a pointer to it.
+ *
+ * If the value has to be computed (for example, it's the result of a
+ * function call or we need to add 1 to it), we use the tmp 'v' to
+ * store the result.
+ * 
+ * \param func name of glGet*v() func for error reporting
+ * \param pname the enum value we're looking up
+ * \param p is were we return the pointer to the value
+ * \param v a tmp union value variable in the calling glGet*v() function
+ *
+ * \return the struct value_desc corresponding to the enum or a struct
+ *     value_desc of TYPE_INVALID if not found.  This lets the calling
+ *     glGet*v() function jump right into a switch statement and
+ *     handle errors there instead of having to check for NULL.
+ */
+static const struct value_desc *
+find_value(const char *func, GLenum pname, void **p, union value *v)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_texture_unit *unit;
+   int mask, hash;
+   const struct value_desc *d;
+
+   mask = Elements(table) - 1;
+   hash = (pname * prime_factor);
+   while (1) {
+      d = &values[table[hash & mask]];
+
+      /* If the enum isn't valid, the hash walk ends with index 0,
+       * which is the API mask entry at the beginning of values[]. */
+      if (unlikely(d->type == TYPE_API_MASK)) {
+	 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
+                     _mesa_lookup_enum_by_nr(pname));
+	 return &error_value;
+      }
+
+      if (likely(d->pname == pname))
+	 break;
+
+      hash += prime_step;
+   }
+
+   if (unlikely(d->extra && !check_extra(ctx, func, d)))
+      return &error_value;
+
+   switch (d->location) {
+   case LOC_BUFFER:
+      *p = ((char *) ctx->DrawBuffer + d->offset);
+      return d;
+   case LOC_CONTEXT:
+      *p = ((char *) ctx + d->offset);
+      return d;
+   case LOC_ARRAY:
+      *p = ((char *) ctx->Array.ArrayObj + d->offset);
+      return d;
+   case LOC_TEXUNIT:
+      unit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+      *p = ((char *) unit + d->offset);
+      return d;
+   case LOC_CUSTOM:
+      find_custom_value(ctx, d, v);
+      *p = v;
+      return d;
+   default:
+      assert(0);
+      break;
+   }
+
+   /* silence warning */
+   return &error_value;
+}
+
+static const int transpose[] = {
+   0, 4,  8, 12,
+   1, 5,  9, 13,
+   2, 6, 10, 14,
+   3, 7, 11, 15
+};
+
+void GLAPIENTRY
+_mesa_GetBooleanv(GLenum pname, GLboolean *params)
+{
+   const struct value_desc *d;
+   union value v;
+   GLmatrix *m;
+   int shift, i;
+   void *p;
+
+   d = find_value("glGetBooleanv", pname, &p, &v);
+   switch (d->type) {
+   case TYPE_INVALID:
+      break;
+   case TYPE_CONST:
+      params[0] = INT_TO_BOOLEAN(d->offset);
+      break;
+
+   case TYPE_FLOAT_4:
+   case TYPE_FLOATN_4:
+      params[3] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[3]);
+   case TYPE_FLOAT_3:
+   case TYPE_FLOATN_3:
+      params[2] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[2]);
+   case TYPE_FLOAT_2:
+   case TYPE_FLOATN_2:
+      params[1] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[1]);
+   case TYPE_FLOAT:
+   case TYPE_FLOATN:
+      params[0] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[0]);
+      break;
+
+   case TYPE_DOUBLEN:
+      params[0] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[0]);
+      break;
+
+   case TYPE_INT_4:
+      params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);
+   case TYPE_INT_3:
+      params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);
+   case TYPE_INT_2:
+   case TYPE_ENUM_2:
+      params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);
+   case TYPE_INT:
+   case TYPE_ENUM:
+      params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);
+      break;
+
+   case TYPE_INT_N:
+      for (i = 0; i < v.value_int_n.n; i++)
+	 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
+      break;
+
+   case TYPE_INT64:
+      params[0] = INT64_TO_BOOLEAN(((GLint64 *) p)[0]);
+      break;
+
+   case TYPE_BOOLEAN:
+      params[0] = ((GLboolean*) p)[0];
+      break;		
+
+   case TYPE_MATRIX:
+      m = *(GLmatrix **) p;
+      for (i = 0; i < 16; i++)
+	 params[i] = FLOAT_TO_BOOLEAN(m->m[i]);
+      break;
+
+   case TYPE_MATRIX_T:
+      m = *(GLmatrix **) p;
+      for (i = 0; i < 16; i++)
+	 params[i] = FLOAT_TO_BOOLEAN(m->m[transpose[i]]);
+      break;
+
+   case TYPE_BIT_0:
+   case TYPE_BIT_1:
+   case TYPE_BIT_2:
+   case TYPE_BIT_3:
+   case TYPE_BIT_4:
+   case TYPE_BIT_5:
+      shift = d->type - TYPE_BIT_0;
+      params[0] = (*(GLbitfield *) p >> shift) & 1;
+      break;
+   }
+}
+
+void GLAPIENTRY
+_mesa_GetFloatv(GLenum pname, GLfloat *params)
+{
+   const struct value_desc *d;
+   union value v;
+   GLmatrix *m;
+   int shift, i;
+   void *p;
+
+   d = find_value("glGetFloatv", pname, &p, &v);
+   switch (d->type) {
+   case TYPE_INVALID:
+      break;
+   case TYPE_CONST:
+      params[0] = (GLfloat) d->offset;
+      break;
+
+   case TYPE_FLOAT_4:
+   case TYPE_FLOATN_4:
+      params[3] = ((GLfloat *) p)[3];
+   case TYPE_FLOAT_3:
+   case TYPE_FLOATN_3:
+      params[2] = ((GLfloat *) p)[2];
+   case TYPE_FLOAT_2:
+   case TYPE_FLOATN_2:
+      params[1] = ((GLfloat *) p)[1];
+   case TYPE_FLOAT:
+   case TYPE_FLOATN:
+      params[0] = ((GLfloat *) p)[0];
+      break;
+
+   case TYPE_DOUBLEN:
+      params[0] = ((GLdouble *) p)[0];
+      break;
+
+   case TYPE_INT_4:
+      params[3] = (GLfloat) (((GLint *) p)[3]);
+   case TYPE_INT_3:
+      params[2] = (GLfloat) (((GLint *) p)[2]);
+   case TYPE_INT_2:
+   case TYPE_ENUM_2:
+      params[1] = (GLfloat) (((GLint *) p)[1]);
+   case TYPE_INT:
+   case TYPE_ENUM:
+      params[0] = (GLfloat) (((GLint *) p)[0]);
+      break;
+
+   case TYPE_INT_N:
+      for (i = 0; i < v.value_int_n.n; i++)
+	 params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
+      break;
+
+   case TYPE_INT64:
+      params[0] = ((GLint64 *) p)[0];
+      break;
+
+   case TYPE_BOOLEAN:
+      params[0] = BOOLEAN_TO_FLOAT(*(GLboolean*) p);
+      break;		
+
+   case TYPE_MATRIX:
+      m = *(GLmatrix **) p;
+      for (i = 0; i < 16; i++)
+	 params[i] = m->m[i];
+      break;
+
+   case TYPE_MATRIX_T:
+      m = *(GLmatrix **) p;
+      for (i = 0; i < 16; i++)
+	 params[i] = m->m[transpose[i]];
+      break;
+
+   case TYPE_BIT_0:
+   case TYPE_BIT_1:
+   case TYPE_BIT_2:
+   case TYPE_BIT_3:
+   case TYPE_BIT_4:
+   case TYPE_BIT_5:
+      shift = d->type - TYPE_BIT_0;
+      params[0] = BOOLEAN_TO_FLOAT((*(GLbitfield *) p >> shift) & 1);
+      break;
+   }
+}
+
+void GLAPIENTRY
+_mesa_GetIntegerv(GLenum pname, GLint *params)
+{
+   const struct value_desc *d;
+   union value v;
+   GLmatrix *m;
+   int shift, i;
+   void *p;
+
+   d = find_value("glGetIntegerv", pname, &p, &v);
+   switch (d->type) {
+   case TYPE_INVALID:
+      break;
+   case TYPE_CONST:
+      params[0] = d->offset;
+      break;
+
+   case TYPE_FLOAT_4:
+      params[3] = IROUND(((GLfloat *) p)[3]);
+   case TYPE_FLOAT_3:
+      params[2] = IROUND(((GLfloat *) p)[2]);
+   case TYPE_FLOAT_2:
+      params[1] = IROUND(((GLfloat *) p)[1]);
+   case TYPE_FLOAT:
+      params[0] = IROUND(((GLfloat *) p)[0]);
+      break;
+
+   case TYPE_FLOATN_4:
+      params[3] = FLOAT_TO_INT(((GLfloat *) p)[3]);
+   case TYPE_FLOATN_3:
+      params[2] = FLOAT_TO_INT(((GLfloat *) p)[2]);
+   case TYPE_FLOATN_2:
+      params[1] = FLOAT_TO_INT(((GLfloat *) p)[1]);
+   case TYPE_FLOATN:
+      params[0] = FLOAT_TO_INT(((GLfloat *) p)[0]);
+      break;
+
+   case TYPE_DOUBLEN:
+      params[0] = FLOAT_TO_INT(((GLdouble *) p)[0]);
+      break;
+
+   case TYPE_INT_4:
+      params[3] = ((GLint *) p)[3];
+   case TYPE_INT_3:
+      params[2] = ((GLint *) p)[2];
+   case TYPE_INT_2:
+   case TYPE_ENUM_2:
+      params[1] = ((GLint *) p)[1];
+   case TYPE_INT:
+   case TYPE_ENUM:
+      params[0] = ((GLint *) p)[0];
+      break;
+
+   case TYPE_INT_N:
+      for (i = 0; i < v.value_int_n.n; i++)
+	 params[i] = v.value_int_n.ints[i];
+      break;
+
+   case TYPE_INT64:
+      params[0] = INT64_TO_INT(((GLint64 *) p)[0]);
+      break;
+
+   case TYPE_BOOLEAN:
+      params[0] = BOOLEAN_TO_INT(*(GLboolean*) p);
+      break;		
+
+   case TYPE_MATRIX:
+      m = *(GLmatrix **) p;
+      for (i = 0; i < 16; i++)
+	 params[i] = FLOAT_TO_INT(m->m[i]);
+      break;
+
+   case TYPE_MATRIX_T:
+      m = *(GLmatrix **) p;
+      for (i = 0; i < 16; i++)
+	 params[i] = FLOAT_TO_INT(m->m[transpose[i]]);
+      break;
+
+   case TYPE_BIT_0:
+   case TYPE_BIT_1:
+   case TYPE_BIT_2:
+   case TYPE_BIT_3:
+   case TYPE_BIT_4:
+   case TYPE_BIT_5:
+      shift = d->type - TYPE_BIT_0;
+      params[0] = (*(GLbitfield *) p >> shift) & 1;
+      break;
+   }
+}
+
+#if FEATURE_ARB_sync
+void GLAPIENTRY
+_mesa_GetInteger64v(GLenum pname, GLint64 *params)
+{
+   const struct value_desc *d;
+   union value v;
+   GLmatrix *m;
+   int shift, i;
+   void *p;
+
+   d = find_value("glGetInteger64v", pname, &p, &v);
+   switch (d->type) {
+   case TYPE_INVALID:
+      break;
+   case TYPE_CONST:
+      params[0] = d->offset;
+      break;
+
+   case TYPE_FLOAT_4:
+      params[3] = IROUND64(((GLfloat *) p)[3]);
+   case TYPE_FLOAT_3:
+      params[2] = IROUND64(((GLfloat *) p)[2]);
+   case TYPE_FLOAT_2:
+      params[1] = IROUND64(((GLfloat *) p)[1]);
+   case TYPE_FLOAT:
+      params[0] = IROUND64(((GLfloat *) p)[0]);
+      break;
+
+   case TYPE_FLOATN_4:
+      params[3] = FLOAT_TO_INT64(((GLfloat *) p)[3]);
+   case TYPE_FLOATN_3:
+      params[2] = FLOAT_TO_INT64(((GLfloat *) p)[2]);
+   case TYPE_FLOATN_2:
+      params[1] = FLOAT_TO_INT64(((GLfloat *) p)[1]);
+   case TYPE_FLOATN:
+      params[0] = FLOAT_TO_INT64(((GLfloat *) p)[0]);
+      break;
+
+   case TYPE_DOUBLEN:
+      params[0] = FLOAT_TO_INT64(((GLdouble *) p)[0]);
+      break;
+
+   case TYPE_INT_4:
+      params[3] = ((GLint *) p)[3];
+   case TYPE_INT_3:
+      params[2] = ((GLint *) p)[2];
+   case TYPE_INT_2:
+   case TYPE_ENUM_2:
+      params[1] = ((GLint *) p)[1];
+   case TYPE_INT:
+   case TYPE_ENUM:
+      params[0] = ((GLint *) p)[0];
+      break;
+
+   case TYPE_INT_N:
+      for (i = 0; i < v.value_int_n.n; i++)
+	 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
+      break;
+
+   case TYPE_INT64:
+      params[0] = ((GLint64 *) p)[0];
+      break;
+
+   case TYPE_BOOLEAN:
+      params[0] = ((GLboolean*) p)[0];
+      break;		
+
+   case TYPE_MATRIX:
+      m = *(GLmatrix **) p;
+      for (i = 0; i < 16; i++)
+	 params[i] = FLOAT_TO_INT64(m->m[i]);
+      break;
+
+   case TYPE_MATRIX_T:
+      m = *(GLmatrix **) p;
+      for (i = 0; i < 16; i++)
+	 params[i] = FLOAT_TO_INT64(m->m[transpose[i]]);
+      break;
+
+   case TYPE_BIT_0:
+   case TYPE_BIT_1:
+   case TYPE_BIT_2:
+   case TYPE_BIT_3:
+   case TYPE_BIT_4:
+   case TYPE_BIT_5:
+      shift = d->type - TYPE_BIT_0;
+      params[0] = (*(GLbitfield *) p >> shift) & 1;
+      break;
+   }
+}
+#endif /* FEATURE_ARB_sync */
+
+void GLAPIENTRY
+_mesa_GetDoublev(GLenum pname, GLdouble *params)
+{
+   const struct value_desc *d;
+   union value v;
+   GLmatrix *m;
+   int shift, i;
+   void *p;
+
+   d = find_value("glGetDoublev", pname, &p, &v);
+   switch (d->type) {
+   case TYPE_INVALID:
+      break;
+   case TYPE_CONST:
+      params[0] = d->offset;
+      break;
+
+   case TYPE_FLOAT_4:
+   case TYPE_FLOATN_4:
+      params[3] = ((GLfloat *) p)[3];
+   case TYPE_FLOAT_3:
+   case TYPE_FLOATN_3:
+      params[2] = ((GLfloat *) p)[2];
+   case TYPE_FLOAT_2:
+   case TYPE_FLOATN_2:
+      params[1] = ((GLfloat *) p)[1];
+   case TYPE_FLOAT:
+   case TYPE_FLOATN:
+      params[0] = ((GLfloat *) p)[0];
+      break;
+
+   case TYPE_DOUBLEN:
+      params[0] = ((GLdouble *) p)[0];
+      break;
+
+   case TYPE_INT_4:
+      params[3] = ((GLint *) p)[3];
+   case TYPE_INT_3:
+      params[2] = ((GLint *) p)[2];
+   case TYPE_INT_2:
+   case TYPE_ENUM_2:
+      params[1] = ((GLint *) p)[1];
+   case TYPE_INT:
+   case TYPE_ENUM:
+      params[0] = ((GLint *) p)[0];
+      break;
+
+   case TYPE_INT_N:
+      for (i = 0; i < v.value_int_n.n; i++)
+	 params[i] = v.value_int_n.ints[i];
+      break;
+
+   case TYPE_INT64:
+      params[0] = ((GLint64 *) p)[0];
+      break;
+
+   case TYPE_BOOLEAN:
+      params[0] = *(GLboolean*) p;
+      break;		
+
+   case TYPE_MATRIX:
+      m = *(GLmatrix **) p;
+      for (i = 0; i < 16; i++)
+	 params[i] = m->m[i];
+      break;
+
+   case TYPE_MATRIX_T:
+      m = *(GLmatrix **) p;
+      for (i = 0; i < 16; i++)
+	 params[i] = m->m[transpose[i]];
+      break;
+
+   case TYPE_BIT_0:
+   case TYPE_BIT_1:
+   case TYPE_BIT_2:
+   case TYPE_BIT_3:
+   case TYPE_BIT_4:
+   case TYPE_BIT_5:
+      shift = d->type - TYPE_BIT_0;
+      params[0] = (*(GLbitfield *) p >> shift) & 1;
+      break;
+   }
+}
+
+static enum value_type
+find_value_indexed(const char *func, GLenum pname, int index, union value *v)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   switch (pname) {
+
+   case GL_BLEND:
+      if (index >= ctx->Const.MaxDrawBuffers)
+	 goto invalid_value;
+      if (!ctx->Extensions.EXT_draw_buffers2)
+	 goto invalid_enum;
+      v->value_int = (ctx->Color.BlendEnabled >> index) & 1;
+      return TYPE_INT;
+
+   case GL_BLEND_SRC:
+      /* fall-through */
+   case GL_BLEND_SRC_RGB:
+      if (index >= ctx->Const.MaxDrawBuffers)
+	 goto invalid_value;
+      if (!ctx->Extensions.ARB_draw_buffers_blend)
+	 goto invalid_enum;
+      v->value_int = ctx->Color.Blend[index].SrcRGB;
+      return TYPE_INT;
+   case GL_BLEND_SRC_ALPHA:
+      if (index >= ctx->Const.MaxDrawBuffers)
+	 goto invalid_value;
+      if (!ctx->Extensions.ARB_draw_buffers_blend)
+	 goto invalid_enum;
+      v->value_int = ctx->Color.Blend[index].SrcA;
+      return TYPE_INT;
+   case GL_BLEND_DST:
+      /* fall-through */
+   case GL_BLEND_DST_RGB:
+      if (index >= ctx->Const.MaxDrawBuffers)
+	 goto invalid_value;
+      if (!ctx->Extensions.ARB_draw_buffers_blend)
+	 goto invalid_enum;
+      v->value_int = ctx->Color.Blend[index].DstRGB;
+      return TYPE_INT;
+   case GL_BLEND_DST_ALPHA:
+      if (index >= ctx->Const.MaxDrawBuffers)
+	 goto invalid_value;
+      if (!ctx->Extensions.ARB_draw_buffers_blend)
+	 goto invalid_enum;
+      v->value_int = ctx->Color.Blend[index].DstA;
+      return TYPE_INT;
+   case GL_BLEND_EQUATION_RGB:
+      if (index >= ctx->Const.MaxDrawBuffers)
+	 goto invalid_value;
+      if (!ctx->Extensions.ARB_draw_buffers_blend)
+	 goto invalid_enum;
+      v->value_int = ctx->Color.Blend[index].EquationRGB;
+      return TYPE_INT;
+   case GL_BLEND_EQUATION_ALPHA:
+      if (index >= ctx->Const.MaxDrawBuffers)
+	 goto invalid_value;
+      if (!ctx->Extensions.ARB_draw_buffers_blend)
+	 goto invalid_enum;
+      v->value_int = ctx->Color.Blend[index].EquationA;
+      return TYPE_INT;
+
+   case GL_COLOR_WRITEMASK:
+      if (index >= ctx->Const.MaxDrawBuffers)
+	 goto invalid_value;
+      if (!ctx->Extensions.EXT_draw_buffers2)
+	 goto invalid_enum;
+      v->value_int_4[0] = ctx->Color.ColorMask[index][RCOMP] ? 1 : 0;
+      v->value_int_4[1] = ctx->Color.ColorMask[index][GCOMP] ? 1 : 0;
+      v->value_int_4[2] = ctx->Color.ColorMask[index][BCOMP] ? 1 : 0;
+      v->value_int_4[3] = ctx->Color.ColorMask[index][ACOMP] ? 1 : 0;
+      return TYPE_INT_4;
+
+   case GL_TRANSFORM_FEEDBACK_BUFFER_START:
+      if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs)
+	 goto invalid_value;
+      if (!ctx->Extensions.EXT_transform_feedback)
+	 goto invalid_enum;
+      v->value_int64 = ctx->TransformFeedback.CurrentObject->Offset[index];
+      return TYPE_INT64;
+
+   case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
+      if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs)
+	 goto invalid_value;
+      if (!ctx->Extensions.EXT_transform_feedback)
+	 goto invalid_enum;
+      v->value_int64 = ctx->TransformFeedback.CurrentObject->Size[index];
+      return TYPE_INT64;
+
+   case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
+      if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs)
+	 goto invalid_value;
+      if (!ctx->Extensions.EXT_transform_feedback)
+	 goto invalid_enum;
+      v->value_int = ctx->TransformFeedback.CurrentObject->Buffers[index]->Name;
+      return TYPE_INT;
+   }
+
+ invalid_enum:
+   _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
+               _mesa_lookup_enum_by_nr(pname));
+   return TYPE_INVALID;
+ invalid_value:
+   _mesa_error(ctx, GL_INVALID_VALUE, "%s(pname=%s)", func,
+               _mesa_lookup_enum_by_nr(pname));
+   return TYPE_INVALID;
+}
+
+void GLAPIENTRY
+_mesa_GetBooleanIndexedv( GLenum pname, GLuint index, GLboolean *params )
+{
+   union value v;
+   enum value_type type =
+      find_value_indexed("glGetBooleanIndexedv", pname, index, &v);
+
+   switch (type) {
+   case TYPE_INT:
+      params[0] = INT_TO_BOOLEAN(v.value_int);
+      break;
+   case TYPE_INT_4:
+      params[0] = INT_TO_BOOLEAN(v.value_int_4[0]);
+      params[1] = INT_TO_BOOLEAN(v.value_int_4[1]);
+      params[2] = INT_TO_BOOLEAN(v.value_int_4[2]);
+      params[3] = INT_TO_BOOLEAN(v.value_int_4[3]);
+      break;
+   case TYPE_INT64:
+      params[0] = INT64_TO_BOOLEAN(v.value_int);
+      break;
+   default:
+      ; /* nothing - GL error was recorded */
+   }
+}
+
+void GLAPIENTRY
+_mesa_GetIntegerIndexedv( GLenum pname, GLuint index, GLint *params )
+{
+   union value v;
+   enum value_type type =
+      find_value_indexed("glGetIntegerIndexedv", pname, index, &v);
+
+   switch (type) {
+   case TYPE_INT:
+      params[0] = v.value_int;
+      break;
+   case TYPE_INT_4:
+      params[0] = v.value_int_4[0];
+      params[1] = v.value_int_4[1];
+      params[2] = v.value_int_4[2];
+      params[3] = v.value_int_4[3];
+      break;
+   case TYPE_INT64:
+      params[0] = INT64_TO_INT(v.value_int);
+      break;
+   default:
+      ; /* nothing - GL error was recorded */
+   }
+}
+
+#if FEATURE_ARB_sync
+void GLAPIENTRY
+_mesa_GetInteger64Indexedv( GLenum pname, GLuint index, GLint64 *params )
+{
+   union value v;
+   enum value_type type =
+      find_value_indexed("glGetIntegerIndexedv", pname, index, &v);      
+
+   switch (type) {
+   case TYPE_INT:
+      params[0] = v.value_int;
+      break;
+   case TYPE_INT_4:
+      params[0] = v.value_int_4[0];
+      params[1] = v.value_int_4[1];
+      params[2] = v.value_int_4[2];
+      params[3] = v.value_int_4[3];
+      break;
+   case TYPE_INT64:
+      params[0] = v.value_int;
+      break;
+   default:
+      ; /* nothing - GL error was recorded */
+   }
+}
+#endif /* FEATURE_ARB_sync */
+
+#if FEATURE_ES1
+void GLAPIENTRY
+_mesa_GetFixedv(GLenum pname, GLfixed *params)
+{
+   const struct value_desc *d;
+   union value v;
+   GLmatrix *m;
+   int shift, i;
+   void *p;
+
+   d = find_value("glGetDoublev", pname, &p, &v);
+   switch (d->type) {
+   case TYPE_INVALID:
+      break;
+   case TYPE_CONST:
+      params[0] = INT_TO_FIXED(d->offset);
+      break;
+
+   case TYPE_FLOAT_4:
+   case TYPE_FLOATN_4:
+      params[3] = FLOAT_TO_FIXED(((GLfloat *) p)[3]);
+   case TYPE_FLOAT_3:
+   case TYPE_FLOATN_3:
+      params[2] = FLOAT_TO_FIXED(((GLfloat *) p)[2]);
+   case TYPE_FLOAT_2:
+   case TYPE_FLOATN_2:
+      params[1] = FLOAT_TO_FIXED(((GLfloat *) p)[1]);
+   case TYPE_FLOAT:
+   case TYPE_FLOATN:
+      params[0] = FLOAT_TO_FIXED(((GLfloat *) p)[0]);
+      break;
+
+   case TYPE_DOUBLEN:
+      params[0] = FLOAT_TO_FIXED(((GLdouble *) p)[0]);
+      break;
+
+   case TYPE_INT_4:
+      params[3] = INT_TO_FIXED(((GLint *) p)[3]);
+   case TYPE_INT_3:
+      params[2] = INT_TO_FIXED(((GLint *) p)[2]);
+   case TYPE_INT_2:
+   case TYPE_ENUM_2:
+      params[1] = INT_TO_FIXED(((GLint *) p)[1]);
+   case TYPE_INT:
+   case TYPE_ENUM:
+      params[0] = INT_TO_FIXED(((GLint *) p)[0]);
+      break;
+
+   case TYPE_INT_N:
+      for (i = 0; i < v.value_int_n.n; i++)
+	 params[i] = INT_TO_FIXED(v.value_int_n.ints[i]);
+      break;
+
+   case TYPE_INT64:
+      params[0] = ((GLint64 *) p)[0];
+      break;
+
+   case TYPE_BOOLEAN:
+      params[0] = BOOLEAN_TO_FIXED(((GLboolean*) p)[0]);
+      break;		
+
+   case TYPE_MATRIX:
+      m = *(GLmatrix **) p;
+      for (i = 0; i < 16; i++)
+	 params[i] = FLOAT_TO_FIXED(m->m[i]);
+      break;
+
+   case TYPE_MATRIX_T:
+      m = *(GLmatrix **) p;
+      for (i = 0; i < 16; i++)
+	 params[i] = FLOAT_TO_FIXED(m->m[transpose[i]]);
+      break;
+
+   case TYPE_BIT_0:
+   case TYPE_BIT_1:
+   case TYPE_BIT_2:
+   case TYPE_BIT_3:
+   case TYPE_BIT_4:
+   case TYPE_BIT_5:
+      shift = d->type - TYPE_BIT_0;
+      params[0] = BOOLEAN_TO_FIXED((*(GLbitfield *) p >> shift) & 1);
+      break;
+   }
+}
+#endif
diff --git a/mesalib/src/mesa/main/mtypes.h b/mesalib/src/mesa/main/mtypes.h
index d2888fa80..fcb06d49e 100644
--- a/mesalib/src/mesa/main/mtypes.h
+++ b/mesalib/src/mesa/main/mtypes.h
@@ -1,3367 +1,3355 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.7

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/**

- * \file mtypes.h

- * Main Mesa data structures.

- *

- * Please try to mark derived values with a leading underscore ('_').

- */

-

-#ifndef MTYPES_H

-#define MTYPES_H

-

-

-#include "main/glheader.h"

-#include "main/config.h"

-#include "main/mfeatures.h"

-#include "glapi/glapi.h"

-#include "math/m_matrix.h"	/* GLmatrix */

-#include "main/simple_list.h"	/* struct simple_node */

-#include "main/formats.h"       /* MESA_FORMAT_COUNT */

-

-

-/**

- * Color channel data type.

- */

-#if CHAN_BITS == 8

-   typedef GLubyte GLchan;

-#define CHAN_MAX 255

-#define CHAN_MAXF 255.0F

-#define CHAN_TYPE GL_UNSIGNED_BYTE

-#elif CHAN_BITS == 16

-   typedef GLushort GLchan;

-#define CHAN_MAX 65535

-#define CHAN_MAXF 65535.0F

-#define CHAN_TYPE GL_UNSIGNED_SHORT

-#elif CHAN_BITS == 32

-   typedef GLfloat GLchan;

-#define CHAN_MAX 1.0

-#define CHAN_MAXF 1.0F

-#define CHAN_TYPE GL_FLOAT

-#else

-#error "illegal number of color channel bits"

-#endif

-

-

-/**

- * Stencil buffer data type.

- */

-#if STENCIL_BITS==8

-   typedef GLubyte GLstencil;

-#elif STENCIL_BITS==16

-   typedef GLushort GLstencil;

-#else

-#  error "illegal number of stencil bits"

-#endif

-

-

-/**

- * \name 64-bit extension of GLbitfield.

- */

-/*@{*/

-typedef GLuint64 GLbitfield64;

-

-/** Set a single bit */

-#define BITFIELD64_BIT(b)      (1ULL << (b))

-

-

-/**

- * \name Some forward type declarations

- */

-/*@{*/

-struct _mesa_HashTable;

-struct gl_attrib_node;

-struct gl_list_extensions;

-struct gl_meta_state;

-struct gl_pixelstore_attrib;

-struct gl_program_cache;

-struct gl_texture_format;

-struct gl_texture_image;

-struct gl_texture_object;

-struct gl_context;

-struct st_context;

-/*@}*/

-

-

-/** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */

-#define PRIM_OUTSIDE_BEGIN_END   (GL_POLYGON+1)

-#define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)

-#define PRIM_UNKNOWN             (GL_POLYGON+3)

-

-

-/**

- * Shader stages. Note that these will become 5 with tessellation.

- * These MUST have the same values as gallium's PIPE_SHADER_*

- */

-typedef enum

-{

-   MESA_SHADER_VERTEX = 0,

-   MESA_SHADER_FRAGMENT = 1,

-   MESA_SHADER_GEOMETRY = 2,

-   MESA_SHADER_TYPES = 3

-} gl_shader_type;

-

-

-

-/**

- * Indexes for vertex program attributes.

- * GL_NV_vertex_program aliases generic attributes over the conventional

- * attributes.  In GL_ARB_vertex_program shader the aliasing is optional.

- * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the

- * generic attributes are distinct/separate).

- */

-typedef enum

-{

-   VERT_ATTRIB_POS = 0,

-   VERT_ATTRIB_WEIGHT = 1,

-   VERT_ATTRIB_NORMAL = 2,

-   VERT_ATTRIB_COLOR0 = 3,

-   VERT_ATTRIB_COLOR1 = 4,

-   VERT_ATTRIB_FOG = 5,

-   VERT_ATTRIB_COLOR_INDEX = 6,

-   VERT_ATTRIB_POINT_SIZE = 6,  /*alias*/

-   VERT_ATTRIB_EDGEFLAG = 7,

-   VERT_ATTRIB_TEX0 = 8,

-   VERT_ATTRIB_TEX1 = 9,

-   VERT_ATTRIB_TEX2 = 10,

-   VERT_ATTRIB_TEX3 = 11,

-   VERT_ATTRIB_TEX4 = 12,

-   VERT_ATTRIB_TEX5 = 13,

-   VERT_ATTRIB_TEX6 = 14,

-   VERT_ATTRIB_TEX7 = 15,

-   VERT_ATTRIB_GENERIC0 = 16,

-   VERT_ATTRIB_GENERIC1 = 17,

-   VERT_ATTRIB_GENERIC2 = 18,

-   VERT_ATTRIB_GENERIC3 = 19,

-   VERT_ATTRIB_GENERIC4 = 20,

-   VERT_ATTRIB_GENERIC5 = 21,

-   VERT_ATTRIB_GENERIC6 = 22,

-   VERT_ATTRIB_GENERIC7 = 23,

-   VERT_ATTRIB_GENERIC8 = 24,

-   VERT_ATTRIB_GENERIC9 = 25,

-   VERT_ATTRIB_GENERIC10 = 26,

-   VERT_ATTRIB_GENERIC11 = 27,

-   VERT_ATTRIB_GENERIC12 = 28,

-   VERT_ATTRIB_GENERIC13 = 29,

-   VERT_ATTRIB_GENERIC14 = 30,

-   VERT_ATTRIB_GENERIC15 = 31,

-   VERT_ATTRIB_MAX = 32

-} gl_vert_attrib;

-

-/**

- * Bitflags for vertex attributes.

- * These are used in bitfields in many places.

- */

-/*@{*/

-#define VERT_BIT_POS         (1 << VERT_ATTRIB_POS)

-#define VERT_BIT_WEIGHT      (1 << VERT_ATTRIB_WEIGHT)

-#define VERT_BIT_NORMAL      (1 << VERT_ATTRIB_NORMAL)

-#define VERT_BIT_COLOR0      (1 << VERT_ATTRIB_COLOR0)

-#define VERT_BIT_COLOR1      (1 << VERT_ATTRIB_COLOR1)

-#define VERT_BIT_FOG         (1 << VERT_ATTRIB_FOG)

-#define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)

-#define VERT_BIT_EDGEFLAG    (1 << VERT_ATTRIB_EDGEFLAG)

-#define VERT_BIT_TEX0        (1 << VERT_ATTRIB_TEX0)

-#define VERT_BIT_TEX1        (1 << VERT_ATTRIB_TEX1)

-#define VERT_BIT_TEX2        (1 << VERT_ATTRIB_TEX2)

-#define VERT_BIT_TEX3        (1 << VERT_ATTRIB_TEX3)

-#define VERT_BIT_TEX4        (1 << VERT_ATTRIB_TEX4)

-#define VERT_BIT_TEX5        (1 << VERT_ATTRIB_TEX5)

-#define VERT_BIT_TEX6        (1 << VERT_ATTRIB_TEX6)

-#define VERT_BIT_TEX7        (1 << VERT_ATTRIB_TEX7)

-#define VERT_BIT_GENERIC0    (1 << VERT_ATTRIB_GENERIC0)

-#define VERT_BIT_GENERIC1    (1 << VERT_ATTRIB_GENERIC1)

-#define VERT_BIT_GENERIC2    (1 << VERT_ATTRIB_GENERIC2)

-#define VERT_BIT_GENERIC3    (1 << VERT_ATTRIB_GENERIC3)

-#define VERT_BIT_GENERIC4    (1 << VERT_ATTRIB_GENERIC4)

-#define VERT_BIT_GENERIC5    (1 << VERT_ATTRIB_GENERIC5)

-#define VERT_BIT_GENERIC6    (1 << VERT_ATTRIB_GENERIC6)

-#define VERT_BIT_GENERIC7    (1 << VERT_ATTRIB_GENERIC7)

-#define VERT_BIT_GENERIC8    (1 << VERT_ATTRIB_GENERIC8)

-#define VERT_BIT_GENERIC9    (1 << VERT_ATTRIB_GENERIC9)

-#define VERT_BIT_GENERIC10   (1 << VERT_ATTRIB_GENERIC10)

-#define VERT_BIT_GENERIC11   (1 << VERT_ATTRIB_GENERIC11)

-#define VERT_BIT_GENERIC12   (1 << VERT_ATTRIB_GENERIC12)

-#define VERT_BIT_GENERIC13   (1 << VERT_ATTRIB_GENERIC13)

-#define VERT_BIT_GENERIC14   (1 << VERT_ATTRIB_GENERIC14)

-#define VERT_BIT_GENERIC15   (1 << VERT_ATTRIB_GENERIC15)

-

-#define VERT_BIT_TEX(u)  (1 << (VERT_ATTRIB_TEX0 + (u)))

-#define VERT_BIT_GENERIC(g)  (1 << (VERT_ATTRIB_GENERIC0 + (g)))

-/*@}*/

-

-

-/**

- * Indexes for vertex program result attributes

- */

-typedef enum

-{

-   VERT_RESULT_HPOS = 0,

-   VERT_RESULT_COL0 = 1,

-   VERT_RESULT_COL1 = 2,

-   VERT_RESULT_FOGC = 3,

-   VERT_RESULT_TEX0 = 4,

-   VERT_RESULT_TEX1 = 5,

-   VERT_RESULT_TEX2 = 6,

-   VERT_RESULT_TEX3 = 7,

-   VERT_RESULT_TEX4 = 8,

-   VERT_RESULT_TEX5 = 9,

-   VERT_RESULT_TEX6 = 10,

-   VERT_RESULT_TEX7 = 11,

-   VERT_RESULT_PSIZ = 12,

-   VERT_RESULT_BFC0 = 13,

-   VERT_RESULT_BFC1 = 14,

-   VERT_RESULT_EDGE = 15,

-   VERT_RESULT_VAR0 = 16,  /**< shader varying */

-   VERT_RESULT_MAX = (VERT_RESULT_VAR0 + MAX_VARYING)

-} gl_vert_result;

-

-

-/*********************************************/

-

-/**

- * Indexes for geometry program attributes.

- */

-typedef enum

-{

-   GEOM_ATTRIB_POSITION = 0,

-   GEOM_ATTRIB_COLOR0 = 1,

-   GEOM_ATTRIB_COLOR1 = 2,

-   GEOM_ATTRIB_SECONDARY_COLOR0 = 3,

-   GEOM_ATTRIB_SECONDARY_COLOR1 = 4,

-   GEOM_ATTRIB_FOG_FRAG_COORD = 5,

-   GEOM_ATTRIB_POINT_SIZE = 6,

-   GEOM_ATTRIB_CLIP_VERTEX = 7,

-   GEOM_ATTRIB_PRIMITIVE_ID = 8,

-   GEOM_ATTRIB_TEX_COORD = 9,

-

-   GEOM_ATTRIB_VAR0 = 16,

-   GEOM_ATTRIB_MAX = (GEOM_ATTRIB_VAR0 + MAX_VARYING)

-} gl_geom_attrib;

-

-/**

- * Bitflags for geometry attributes.

- * These are used in bitfields in many places.

- */

-/*@{*/

-#define GEOM_BIT_COLOR0      (1 << GEOM_ATTRIB_COLOR0)

-#define GEOM_BIT_COLOR1      (1 << GEOM_ATTRIB_COLOR1)

-#define GEOM_BIT_SCOLOR0     (1 << GEOM_ATTRIB_SECONDARY_COLOR0)

-#define GEOM_BIT_SCOLOR1     (1 << GEOM_ATTRIB_SECONDARY_COLOR1)

-#define GEOM_BIT_TEX_COORD   (1 << GEOM_ATTRIB_TEX_COORD)

-#define GEOM_BIT_FOG_COORD   (1 << GEOM_ATTRIB_FOG_FRAG_COORD)

-#define GEOM_BIT_POSITION    (1 << GEOM_ATTRIB_POSITION)

-#define GEOM_BIT_POINT_SIDE  (1 << GEOM_ATTRIB_POINT_SIZE)

-#define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)

-#define GEOM_BIT_PRIM_ID     (1 << GEOM_ATTRIB_PRIMITIVE_ID)

-#define GEOM_BIT_VAR0        (1 << GEOM_ATTRIB_VAR0)

-

-#define GEOM_BIT_VAR(g)  (1 << (GEOM_BIT_VAR0 + (g)))

-/*@}*/

-

-

-/**

- * Indexes for geometry program result attributes

- */

-typedef enum

-{

-   GEOM_RESULT_POS  = 0,

-   GEOM_RESULT_COL0  = 1,

-   GEOM_RESULT_COL1  = 2,

-   GEOM_RESULT_SCOL0 = 3,

-   GEOM_RESULT_SCOL1 = 4,

-   GEOM_RESULT_FOGC = 5,

-   GEOM_RESULT_TEX0 = 6,

-   GEOM_RESULT_TEX1 = 7,

-   GEOM_RESULT_TEX2 = 8,

-   GEOM_RESULT_TEX3 = 9,

-   GEOM_RESULT_TEX4 = 10,

-   GEOM_RESULT_TEX5 = 11,

-   GEOM_RESULT_TEX6 = 12,

-   GEOM_RESULT_TEX7 = 13,

-   GEOM_RESULT_PSIZ = 14,

-   GEOM_RESULT_CLPV = 15,

-   GEOM_RESULT_PRID = 16,

-   GEOM_RESULT_LAYR = 17,

-   GEOM_RESULT_VAR0 = 18,  /**< shader varying, should really be 16 */

-   /* ### we need to -2 because var0 is 18 instead 16 like in the others */

-   GEOM_RESULT_MAX  =  (GEOM_RESULT_VAR0 + MAX_VARYING - 2)

-} gl_geom_result;

-

-

-/**

- * Indexes for fragment program input attributes.

- */

-typedef enum

-{

-   FRAG_ATTRIB_WPOS = 0,

-   FRAG_ATTRIB_COL0 = 1,

-   FRAG_ATTRIB_COL1 = 2,

-   FRAG_ATTRIB_FOGC = 3,

-   FRAG_ATTRIB_TEX0 = 4,

-   FRAG_ATTRIB_TEX1 = 5,

-   FRAG_ATTRIB_TEX2 = 6,

-   FRAG_ATTRIB_TEX3 = 7,

-   FRAG_ATTRIB_TEX4 = 8,

-   FRAG_ATTRIB_TEX5 = 9,

-   FRAG_ATTRIB_TEX6 = 10,

-   FRAG_ATTRIB_TEX7 = 11,

-   FRAG_ATTRIB_FACE = 12,  /**< front/back face */

-   FRAG_ATTRIB_PNTC = 13,  /**< sprite/point coord */

-   FRAG_ATTRIB_VAR0 = 14,  /**< shader varying */

-   FRAG_ATTRIB_MAX = (FRAG_ATTRIB_VAR0 + MAX_VARYING)

-} gl_frag_attrib;

-

-/**

- * Bitflags for fragment program input attributes.

- */

-/*@{*/

-#define FRAG_BIT_WPOS  (1 << FRAG_ATTRIB_WPOS)

-#define FRAG_BIT_COL0  (1 << FRAG_ATTRIB_COL0)

-#define FRAG_BIT_COL1  (1 << FRAG_ATTRIB_COL1)

-#define FRAG_BIT_FOGC  (1 << FRAG_ATTRIB_FOGC)

-#define FRAG_BIT_FACE  (1 << FRAG_ATTRIB_FACE)

-#define FRAG_BIT_PNTC  (1 << FRAG_ATTRIB_PNTC)

-#define FRAG_BIT_TEX0  (1 << FRAG_ATTRIB_TEX0)

-#define FRAG_BIT_TEX1  (1 << FRAG_ATTRIB_TEX1)

-#define FRAG_BIT_TEX2  (1 << FRAG_ATTRIB_TEX2)

-#define FRAG_BIT_TEX3  (1 << FRAG_ATTRIB_TEX3)

-#define FRAG_BIT_TEX4  (1 << FRAG_ATTRIB_TEX4)

-#define FRAG_BIT_TEX5  (1 << FRAG_ATTRIB_TEX5)

-#define FRAG_BIT_TEX6  (1 << FRAG_ATTRIB_TEX6)

-#define FRAG_BIT_TEX7  (1 << FRAG_ATTRIB_TEX7)

-#define FRAG_BIT_VAR0  (1 << FRAG_ATTRIB_VAR0)

-

-#define FRAG_BIT_TEX(U)  (FRAG_BIT_TEX0 << (U))

-#define FRAG_BIT_VAR(V)  (FRAG_BIT_VAR0 << (V))

-

-#define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0|	\

-			   FRAG_BIT_TEX1|	\

-			   FRAG_BIT_TEX2|	\

-			   FRAG_BIT_TEX3|	\

-			   FRAG_BIT_TEX4|	\

-			   FRAG_BIT_TEX5|	\

-			   FRAG_BIT_TEX6|	\

-			   FRAG_BIT_TEX7)

-/*@}*/

-

-

-/**

- * Fragment program results

- */

-typedef enum

-{

-   FRAG_RESULT_DEPTH = 0,

-   FRAG_RESULT_STENCIL = 1,

-   FRAG_RESULT_COLOR = 2,

-   FRAG_RESULT_DATA0 = 3,

-   FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS)

-} gl_frag_result;

-

-

-/**

- * Indexes for all renderbuffers

- */

-typedef enum

-{

-   /* the four standard color buffers */

-   BUFFER_FRONT_LEFT,

-   BUFFER_BACK_LEFT,

-   BUFFER_FRONT_RIGHT,

-   BUFFER_BACK_RIGHT,

-   BUFFER_DEPTH,

-   BUFFER_STENCIL,

-   BUFFER_ACCUM,

-   /* optional aux buffer */

-   BUFFER_AUX0,

-   /* generic renderbuffers */

-   BUFFER_COLOR0,

-   BUFFER_COLOR1,

-   BUFFER_COLOR2,

-   BUFFER_COLOR3,

-   BUFFER_COLOR4,

-   BUFFER_COLOR5,

-   BUFFER_COLOR6,

-   BUFFER_COLOR7,

-   BUFFER_COUNT

-} gl_buffer_index;

-

-/**

- * Bit flags for all renderbuffers

- */

-#define BUFFER_BIT_FRONT_LEFT   (1 << BUFFER_FRONT_LEFT)

-#define BUFFER_BIT_BACK_LEFT    (1 << BUFFER_BACK_LEFT)

-#define BUFFER_BIT_FRONT_RIGHT  (1 << BUFFER_FRONT_RIGHT)

-#define BUFFER_BIT_BACK_RIGHT   (1 << BUFFER_BACK_RIGHT)

-#define BUFFER_BIT_AUX0         (1 << BUFFER_AUX0)

-#define BUFFER_BIT_AUX1         (1 << BUFFER_AUX1)

-#define BUFFER_BIT_AUX2         (1 << BUFFER_AUX2)

-#define BUFFER_BIT_AUX3         (1 << BUFFER_AUX3)

-#define BUFFER_BIT_DEPTH        (1 << BUFFER_DEPTH)

-#define BUFFER_BIT_STENCIL      (1 << BUFFER_STENCIL)

-#define BUFFER_BIT_ACCUM        (1 << BUFFER_ACCUM)

-#define BUFFER_BIT_COLOR0       (1 << BUFFER_COLOR0)

-#define BUFFER_BIT_COLOR1       (1 << BUFFER_COLOR1)

-#define BUFFER_BIT_COLOR2       (1 << BUFFER_COLOR2)

-#define BUFFER_BIT_COLOR3       (1 << BUFFER_COLOR3)

-#define BUFFER_BIT_COLOR4       (1 << BUFFER_COLOR4)

-#define BUFFER_BIT_COLOR5       (1 << BUFFER_COLOR5)

-#define BUFFER_BIT_COLOR6       (1 << BUFFER_COLOR6)

-#define BUFFER_BIT_COLOR7       (1 << BUFFER_COLOR7)

-

-/**

- * Mask of all the color buffer bits (but not accum).

- */

-#define BUFFER_BITS_COLOR  (BUFFER_BIT_FRONT_LEFT | \

-                            BUFFER_BIT_BACK_LEFT | \

-                            BUFFER_BIT_FRONT_RIGHT | \

-                            BUFFER_BIT_BACK_RIGHT | \

-                            BUFFER_BIT_AUX0 | \

-                            BUFFER_BIT_COLOR0 | \

-                            BUFFER_BIT_COLOR1 | \

-                            BUFFER_BIT_COLOR2 | \

-                            BUFFER_BIT_COLOR3 | \

-                            BUFFER_BIT_COLOR4 | \

-                            BUFFER_BIT_COLOR5 | \

-                            BUFFER_BIT_COLOR6 | \

-                            BUFFER_BIT_COLOR7)

-

-

-/**

- * Framebuffer configuration (aka visual / pixelformat)

- * Note: some of these fields should be boolean, but it appears that

- * code in drivers/dri/common/util.c requires int-sized fields.

- */

-struct gl_config

-{

-   GLboolean rgbMode;

-   GLboolean floatMode;

-   GLboolean colorIndexMode;  /* XXX is this used anywhere? */

-   GLuint doubleBufferMode;

-   GLuint stereoMode;

-

-   GLboolean haveAccumBuffer;

-   GLboolean haveDepthBuffer;

-   GLboolean haveStencilBuffer;

-

-   GLint redBits, greenBits, blueBits, alphaBits;	/* bits per comp */

-   GLuint redMask, greenMask, blueMask, alphaMask;

-   GLint rgbBits;		/* total bits for rgb */

-   GLint indexBits;		/* total bits for colorindex */

-

-   GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits;

-   GLint depthBits;

-   GLint stencilBits;

-

-   GLint numAuxBuffers;

-

-   GLint level;

-

-   /* EXT_visual_rating / GLX 1.2 */

-   GLint visualRating;

-

-   /* EXT_visual_info / GLX 1.2 */

-   GLint transparentPixel;

-   /*    colors are floats scaled to ints */

-   GLint transparentRed, transparentGreen, transparentBlue, transparentAlpha;

-   GLint transparentIndex;

-

-   /* ARB_multisample / SGIS_multisample */

-   GLint sampleBuffers;

-   GLint samples;

-

-   /* SGIX_pbuffer / GLX 1.3 */

-   GLint maxPbufferWidth;

-   GLint maxPbufferHeight;

-   GLint maxPbufferPixels;

-   GLint optimalPbufferWidth;   /* Only for SGIX_pbuffer. */

-   GLint optimalPbufferHeight;  /* Only for SGIX_pbuffer. */

-

-   /* OML_swap_method */

-   GLint swapMethod;

-

-   /* EXT_texture_from_pixmap */

-   GLint bindToTextureRgb;

-   GLint bindToTextureRgba;

-   GLint bindToMipmapTexture;

-   GLint bindToTextureTargets;

-   GLint yInverted;

-

-   /* EXT_framebuffer_sRGB */

-   GLint sRGBCapable;

-};

-

-

-/**

- * Data structure for color tables

- */

-struct gl_color_table

-{

-   GLenum InternalFormat;      /**< The user-specified format */

-   GLenum _BaseFormat;         /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */

-   GLuint Size;                /**< number of entries in table */

-   GLfloat *TableF;            /**< Color table, floating point values */

-   GLubyte *TableUB;           /**< Color table, ubyte values */

-   GLubyte RedSize;

-   GLubyte GreenSize;

-   GLubyte BlueSize;

-   GLubyte AlphaSize;

-   GLubyte LuminanceSize;

-   GLubyte IntensitySize;

-};

-

-

-/**

- * \name Bit flags used for updating material values.

- */

-/*@{*/

-#define MAT_ATTRIB_FRONT_AMBIENT           0 

-#define MAT_ATTRIB_BACK_AMBIENT            1

-#define MAT_ATTRIB_FRONT_DIFFUSE           2 

-#define MAT_ATTRIB_BACK_DIFFUSE            3

-#define MAT_ATTRIB_FRONT_SPECULAR          4 

-#define MAT_ATTRIB_BACK_SPECULAR           5

-#define MAT_ATTRIB_FRONT_EMISSION          6

-#define MAT_ATTRIB_BACK_EMISSION           7

-#define MAT_ATTRIB_FRONT_SHININESS         8

-#define MAT_ATTRIB_BACK_SHININESS          9

-#define MAT_ATTRIB_FRONT_INDEXES           10

-#define MAT_ATTRIB_BACK_INDEXES            11

-#define MAT_ATTRIB_MAX                     12

-

-#define MAT_ATTRIB_AMBIENT(f)  (MAT_ATTRIB_FRONT_AMBIENT+(f))  

-#define MAT_ATTRIB_DIFFUSE(f)  (MAT_ATTRIB_FRONT_DIFFUSE+(f))  

-#define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f)) 

-#define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f)) 

-#define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))

-#define MAT_ATTRIB_INDEXES(f)  (MAT_ATTRIB_FRONT_INDEXES+(f))  

-

-#define MAT_INDEX_AMBIENT  0

-#define MAT_INDEX_DIFFUSE  1

-#define MAT_INDEX_SPECULAR 2

-

-#define MAT_BIT_FRONT_AMBIENT         (1<<MAT_ATTRIB_FRONT_AMBIENT)

-#define MAT_BIT_BACK_AMBIENT          (1<<MAT_ATTRIB_BACK_AMBIENT)

-#define MAT_BIT_FRONT_DIFFUSE         (1<<MAT_ATTRIB_FRONT_DIFFUSE)

-#define MAT_BIT_BACK_DIFFUSE          (1<<MAT_ATTRIB_BACK_DIFFUSE)

-#define MAT_BIT_FRONT_SPECULAR        (1<<MAT_ATTRIB_FRONT_SPECULAR)

-#define MAT_BIT_BACK_SPECULAR         (1<<MAT_ATTRIB_BACK_SPECULAR)

-#define MAT_BIT_FRONT_EMISSION        (1<<MAT_ATTRIB_FRONT_EMISSION)

-#define MAT_BIT_BACK_EMISSION         (1<<MAT_ATTRIB_BACK_EMISSION)

-#define MAT_BIT_FRONT_SHININESS       (1<<MAT_ATTRIB_FRONT_SHININESS)

-#define MAT_BIT_BACK_SHININESS        (1<<MAT_ATTRIB_BACK_SHININESS)

-#define MAT_BIT_FRONT_INDEXES         (1<<MAT_ATTRIB_FRONT_INDEXES)

-#define MAT_BIT_BACK_INDEXES          (1<<MAT_ATTRIB_BACK_INDEXES)

-

-

-#define FRONT_MATERIAL_BITS	(MAT_BIT_FRONT_EMISSION | 	\

-				 MAT_BIT_FRONT_AMBIENT |	\

-				 MAT_BIT_FRONT_DIFFUSE | 	\

-				 MAT_BIT_FRONT_SPECULAR |	\

-				 MAT_BIT_FRONT_SHININESS | 	\

-				 MAT_BIT_FRONT_INDEXES)

-

-#define BACK_MATERIAL_BITS	(MAT_BIT_BACK_EMISSION |	\

-				 MAT_BIT_BACK_AMBIENT |		\

-				 MAT_BIT_BACK_DIFFUSE |		\

-				 MAT_BIT_BACK_SPECULAR |	\

-				 MAT_BIT_BACK_SHININESS |	\

-				 MAT_BIT_BACK_INDEXES)

-

-#define ALL_MATERIAL_BITS	(FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)

-/*@}*/

-

-

-#define EXP_TABLE_SIZE 512	/**< Specular exponent lookup table sizes */

-#define SHINE_TABLE_SIZE 256	/**< Material shininess lookup table sizes */

-

-/**

- * Material shininess lookup table.

- */

-struct gl_shine_tab

-{

-   struct gl_shine_tab *next, *prev;

-   GLfloat tab[SHINE_TABLE_SIZE+1];

-   GLfloat shininess;

-   GLuint refcount;

-};

-

-

-/**

- * Light source state.

- */

-struct gl_light

-{

-   struct gl_light *next;	/**< double linked list with sentinel */

-   struct gl_light *prev;

-

-   GLfloat Ambient[4];		/**< ambient color */

-   GLfloat Diffuse[4];		/**< diffuse color */

-   GLfloat Specular[4];		/**< specular color */

-   GLfloat EyePosition[4];	/**< position in eye coordinates */

-   GLfloat SpotDirection[4];	/**< spotlight direction in eye coordinates */

-   GLfloat SpotExponent;

-   GLfloat SpotCutoff;		/**< in degrees */

-   GLfloat _CosCutoffNeg;	/**< = cos(SpotCutoff) */

-   GLfloat _CosCutoff;		/**< = MAX(0, cos(SpotCutoff)) */

-   GLfloat ConstantAttenuation;

-   GLfloat LinearAttenuation;

-   GLfloat QuadraticAttenuation;

-   GLboolean Enabled;		/**< On/off flag */

-

-   /** 

-    * \name Derived fields

-    */

-   /*@{*/

-   GLbitfield _Flags;		/**< State */

-

-   GLfloat _Position[4];	/**< position in eye/obj coordinates */

-   GLfloat _VP_inf_norm[3];	/**< Norm direction to infinite light */

-   GLfloat _h_inf_norm[3];	/**< Norm( _VP_inf_norm + <0,0,1> ) */

-   GLfloat _NormSpotDirection[4]; /**< normalized spotlight direction */

-   GLfloat _VP_inf_spot_attenuation;

-

-   GLfloat _SpotExpTable[EXP_TABLE_SIZE][2];  /**< to replace a pow() call */

-   GLfloat _MatAmbient[2][3];	/**< material ambient * light ambient */

-   GLfloat _MatDiffuse[2][3];	/**< material diffuse * light diffuse */

-   GLfloat _MatSpecular[2][3];	/**< material spec * light specular */

-   GLfloat _dli;		/**< CI diffuse light intensity */

-   GLfloat _sli;		/**< CI specular light intensity */

-   /*@}*/

-};

-

-

-/**

- * Light model state.

- */

-struct gl_lightmodel

-{

-   GLfloat Ambient[4];		/**< ambient color */

-   GLboolean LocalViewer;	/**< Local (or infinite) view point? */

-   GLboolean TwoSide;		/**< Two (or one) sided lighting? */

-   GLenum ColorControl;		/**< either GL_SINGLE_COLOR

-				 *    or GL_SEPARATE_SPECULAR_COLOR */

-};

-

-

-/**

- * Material state.

- */

-struct gl_material

-{

-   GLfloat Attrib[MAT_ATTRIB_MAX][4];

-};

-

-

-/**

- * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)

- */

-struct gl_accum_attrib

-{

-   GLfloat ClearColor[4];	/**< Accumulation buffer clear color */

-};

-

-

-/**

- * Color buffer attribute group (GL_COLOR_BUFFER_BIT).

- */

-struct gl_colorbuffer_attrib

-{

-   GLuint ClearIndex;			/**< Index to use for glClear */

-   GLclampf ClearColor[4];		/**< Color to use for glClear */

-

-   GLuint IndexMask;			/**< Color index write mask */

-   GLubyte ColorMask[MAX_DRAW_BUFFERS][4];/**< Each flag is 0xff or 0x0 */

-

-   GLenum DrawBuffer[MAX_DRAW_BUFFERS];	/**< Which buffer to draw into */

-

-   /** 

-    * \name alpha testing

-    */

-   /*@{*/

-   GLboolean AlphaEnabled;		/**< Alpha test enabled flag */

-   GLenum AlphaFunc;			/**< Alpha test function */

-   GLclampf AlphaRef;			/**< Alpha reference value */

-   /*@}*/

-

-   /** 

-    * \name Blending

-    */

-   /*@{*/

-   GLbitfield BlendEnabled;		/**< Per-buffer blend enable flags */

-   GLfloat BlendColor[4];		/**< Blending color */

-   struct

-   {

-      GLenum SrcRGB;             /**< RGB blend source term */

-      GLenum DstRGB;             /**< RGB blend dest term */

-      GLenum SrcA;               /**< Alpha blend source term */

-      GLenum DstA;               /**< Alpha blend dest term */

-      GLenum EquationRGB;        /**< GL_ADD, GL_SUBTRACT, etc. */

-      GLenum EquationA;          /**< GL_ADD, GL_SUBTRACT, etc. */

-   } Blend[MAX_DRAW_BUFFERS];

-   /** Are the blend func terms currently different for each buffer/target? */

-   GLboolean _BlendFuncPerBuffer;

-   /** Are the blend equations currently different for each buffer/target? */

-   GLboolean _BlendEquationPerBuffer;

-   /*@}*/

-

-   /** 

-    * \name Logic op

-    */

-   /*@{*/

-   GLenum LogicOp;			/**< Logic operator */

-   GLboolean IndexLogicOpEnabled;	/**< Color index logic op enabled flag */

-   GLboolean ColorLogicOpEnabled;	/**< RGBA logic op enabled flag */

-   GLboolean _LogicOpEnabled;		/**< RGBA logic op + EXT_blend_logic_op enabled flag */

-   /*@}*/

-

-   GLboolean DitherFlag;		/**< Dither enable flag */

-

-   GLenum ClampFragmentColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */

-   GLenum ClampReadColor;     /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */

-

-   GLboolean sRGBEnabled;	/**< Framebuffer sRGB blending/updating requested */

-};

-

-

-/**

- * Current attribute group (GL_CURRENT_BIT).

- */

-struct gl_current_attrib

-{

-   /**

-    * \name Current vertex attributes.

-    * \note Values are valid only after FLUSH_VERTICES has been called.

-    * \note Index and Edgeflag current values are stored as floats in the 

-    * SIX and SEVEN attribute slots.

-    */

-   GLfloat Attrib[VERT_ATTRIB_MAX][4];	/**< Position, color, texcoords, etc */

-

-   /**

-    * \name Current raster position attributes (always valid).

-    * \note This set of attributes is very similar to the SWvertex struct.

-    */

-   /*@{*/

-   GLfloat RasterPos[4];

-   GLfloat RasterDistance;

-   GLfloat RasterColor[4];

-   GLfloat RasterSecondaryColor[4];

-   GLfloat RasterTexCoords[MAX_TEXTURE_COORD_UNITS][4];

-   GLboolean RasterPosValid;

-   /*@}*/

-};

-

-

-/**

- * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).

- */

-struct gl_depthbuffer_attrib

-{

-   GLenum Func;			/**< Function for depth buffer compare */

-   GLclampd Clear;		/**< Value to clear depth buffer to */

-   GLboolean Test;		/**< Depth buffering enabled flag */

-   GLboolean Mask;		/**< Depth buffer writable? */

-   GLboolean BoundsTest;        /**< GL_EXT_depth_bounds_test */

-   GLfloat BoundsMin, BoundsMax;/**< GL_EXT_depth_bounds_test */

-};

-

-

-/**

- * Evaluator attribute group (GL_EVAL_BIT).

- */

-struct gl_eval_attrib

-{

-   /**

-    * \name Enable bits 

-    */

-   /*@{*/

-   GLboolean Map1Color4;

-   GLboolean Map1Index;

-   GLboolean Map1Normal;

-   GLboolean Map1TextureCoord1;

-   GLboolean Map1TextureCoord2;

-   GLboolean Map1TextureCoord3;

-   GLboolean Map1TextureCoord4;

-   GLboolean Map1Vertex3;

-   GLboolean Map1Vertex4;

-   GLboolean Map1Attrib[16];  /* GL_NV_vertex_program */

-   GLboolean Map2Color4;

-   GLboolean Map2Index;

-   GLboolean Map2Normal;

-   GLboolean Map2TextureCoord1;

-   GLboolean Map2TextureCoord2;

-   GLboolean Map2TextureCoord3;

-   GLboolean Map2TextureCoord4;

-   GLboolean Map2Vertex3;

-   GLboolean Map2Vertex4;

-   GLboolean Map2Attrib[16];  /* GL_NV_vertex_program */

-   GLboolean AutoNormal;

-   /*@}*/

-   

-   /**

-    * \name Map Grid endpoints and divisions and calculated du values

-    */

-   /*@{*/

-   GLint MapGrid1un;

-   GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du;

-   GLint MapGrid2un, MapGrid2vn;

-   GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du;

-   GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv;

-   /*@}*/

-};

-

-

-/**

- * Fog attribute group (GL_FOG_BIT).

- */

-struct gl_fog_attrib

-{

-   GLboolean Enabled;		/**< Fog enabled flag */

-   GLfloat Color[4];		/**< Fog color */

-   GLfloat Density;		/**< Density >= 0.0 */

-   GLfloat Start;		/**< Start distance in eye coords */

-   GLfloat End;			/**< End distance in eye coords */

-   GLfloat Index;		/**< Fog index */

-   GLenum Mode;			/**< Fog mode */

-   GLboolean ColorSumEnabled;

-   GLenum FogCoordinateSource;  /**< GL_EXT_fog_coord */

-   GLfloat _Scale;		/**< (End == Start) ? 1.0 : 1.0 / (End - Start) */

-};

-

-

-/**

- * \brief Layout qualifiers for gl_FragDepth.

- *

- * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with

- * a layout qualifier.

- *

- * \see enum ir_depth_layout

- */

-enum gl_frag_depth_layout {

-    FRAG_DEPTH_LAYOUT_NONE, /**< No layout is specified. */

-    FRAG_DEPTH_LAYOUT_ANY,

-    FRAG_DEPTH_LAYOUT_GREATER,

-    FRAG_DEPTH_LAYOUT_LESS,

-    FRAG_DEPTH_LAYOUT_UNCHANGED

-};

-

-

-/** 

- * Hint attribute group (GL_HINT_BIT).

- * 

- * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.

- */

-struct gl_hint_attrib

-{

-   GLenum PerspectiveCorrection;

-   GLenum PointSmooth;

-   GLenum LineSmooth;

-   GLenum PolygonSmooth;

-   GLenum Fog;

-   GLenum ClipVolumeClipping;   /**< GL_EXT_clip_volume_hint */

-   GLenum TextureCompression;   /**< GL_ARB_texture_compression */

-   GLenum GenerateMipmap;       /**< GL_SGIS_generate_mipmap */

-   GLenum FragmentShaderDerivative; /**< GL_ARB_fragment_shader */

-};

-

-/**

- * Light state flags.

- */

-/*@{*/

-#define LIGHT_SPOT         0x1

-#define LIGHT_LOCAL_VIEWER 0x2

-#define LIGHT_POSITIONAL   0x4

-#define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)

-/*@}*/

-

-

-/**

- * Lighting attribute group (GL_LIGHT_BIT).

- */

-struct gl_light_attrib

-{

-   struct gl_light Light[MAX_LIGHTS];	/**< Array of light sources */

-   struct gl_lightmodel Model;		/**< Lighting model */

-

-   /**

-    * Must flush FLUSH_VERTICES before referencing:

-    */

-   /*@{*/

-   struct gl_material Material; 	/**< Includes front & back values */

-   /*@}*/

-

-   GLboolean Enabled;			/**< Lighting enabled flag */

-   GLenum ShadeModel;			/**< GL_FLAT or GL_SMOOTH */

-   GLenum ProvokingVertex;              /**< GL_EXT_provoking_vertex */

-   GLenum ColorMaterialFace;		/**< GL_FRONT, BACK or FRONT_AND_BACK */

-   GLenum ColorMaterialMode;		/**< GL_AMBIENT, GL_DIFFUSE, etc */

-   GLbitfield ColorMaterialBitmask;	/**< bitmask formed from Face and Mode */

-   GLboolean ColorMaterialEnabled;

-   GLenum ClampVertexColor;

-

-   struct gl_light EnabledList;         /**< List sentinel */

-

-   /** 

-    * Derived state for optimizations: 

-    */

-   /*@{*/

-   GLboolean _NeedEyeCoords;		

-   GLboolean _NeedVertices;		/**< Use fast shader? */

-   GLbitfield _Flags;		        /**< LIGHT_* flags, see above */

-   GLfloat _BaseColor[2][3];

-   /*@}*/

-};

-

-

-/**

- * Line attribute group (GL_LINE_BIT).

- */

-struct gl_line_attrib

-{

-   GLboolean SmoothFlag;	/**< GL_LINE_SMOOTH enabled? */

-   GLboolean StippleFlag;	/**< GL_LINE_STIPPLE enabled? */

-   GLushort StipplePattern;	/**< Stipple pattern */

-   GLint StippleFactor;		/**< Stipple repeat factor */

-   GLfloat Width;		/**< Line width */

-};

-

-

-/**

- * Display list attribute group (GL_LIST_BIT).

- */

-struct gl_list_attrib

-{

-   GLuint ListBase;

-};

-

-

-/**

- * Multisample attribute group (GL_MULTISAMPLE_BIT).

- */

-struct gl_multisample_attrib

-{

-   GLboolean Enabled;

-   GLboolean _Enabled;   /**< true if Enabled and multisample buffer */

-   GLboolean SampleAlphaToCoverage;

-   GLboolean SampleAlphaToOne;

-   GLboolean SampleCoverage;

-   GLfloat SampleCoverageValue;

-   GLboolean SampleCoverageInvert;

-};

-

-

-/**

- * A pixelmap (see glPixelMap)

- */

-struct gl_pixelmap

-{

-   GLint Size;

-   GLfloat Map[MAX_PIXEL_MAP_TABLE];

-   GLubyte Map8[MAX_PIXEL_MAP_TABLE];  /**< converted to 8-bit color */

-};

-

-

-/**

- * Collection of all pixelmaps

- */

-struct gl_pixelmaps

-{

-   struct gl_pixelmap RtoR;  /**< i.e. GL_PIXEL_MAP_R_TO_R */

-   struct gl_pixelmap GtoG;

-   struct gl_pixelmap BtoB;

-   struct gl_pixelmap AtoA;

-   struct gl_pixelmap ItoR;

-   struct gl_pixelmap ItoG;

-   struct gl_pixelmap ItoB;

-   struct gl_pixelmap ItoA;

-   struct gl_pixelmap ItoI;

-   struct gl_pixelmap StoS;

-};

-

-

-/**

- * Pixel attribute group (GL_PIXEL_MODE_BIT).

- */

-struct gl_pixel_attrib

-{

-   GLenum ReadBuffer;		/**< source buffer for glRead/CopyPixels() */

-

-   /*--- Begin Pixel Transfer State ---*/

-   /* Fields are in the order in which they're applied... */

-

-   /** Scale & Bias (index shift, offset) */

-   /*@{*/

-   GLfloat RedBias, RedScale;

-   GLfloat GreenBias, GreenScale;

-   GLfloat BlueBias, BlueScale;

-   GLfloat AlphaBias, AlphaScale;

-   GLfloat DepthBias, DepthScale;

-   GLint IndexShift, IndexOffset;

-   /*@}*/

-

-   /* Pixel Maps */

-   /* Note: actual pixel maps are not part of this attrib group */

-   GLboolean MapColorFlag;

-   GLboolean MapStencilFlag;

-

-   /*--- End Pixel Transfer State ---*/

-

-   /** glPixelZoom */

-   GLfloat ZoomX, ZoomY;

-

-   /** GL_SGI_texture_color_table */

-   GLfloat TextureColorTableScale[4]; /**< RGBA */

-   GLfloat TextureColorTableBias[4];  /**< RGBA */

-};

-

-

-/**

- * Point attribute group (GL_POINT_BIT).

- */

-struct gl_point_attrib

-{

-   GLboolean SmoothFlag;	/**< True if GL_POINT_SMOOTH is enabled */

-   GLfloat Size;		/**< User-specified point size */

-   GLfloat Params[3];		/**< GL_EXT_point_parameters */

-   GLfloat MinSize, MaxSize;	/**< GL_EXT_point_parameters */

-   GLfloat Threshold;		/**< GL_EXT_point_parameters */

-   GLboolean _Attenuated;	/**< True if Params != [1, 0, 0] */

-   GLboolean PointSprite;	/**< GL_NV/ARB_point_sprite */

-   GLboolean CoordReplace[MAX_TEXTURE_COORD_UNITS]; /**< GL_ARB_point_sprite*/

-   GLenum SpriteRMode;		/**< GL_NV_point_sprite (only!) */

-   GLenum SpriteOrigin;		/**< GL_ARB_point_sprite */

-};

-

-

-/**

- * Polygon attribute group (GL_POLYGON_BIT).

- */

-struct gl_polygon_attrib

-{

-   GLenum FrontFace;		/**< Either GL_CW or GL_CCW */

-   GLenum FrontMode;		/**< Either GL_POINT, GL_LINE or GL_FILL */

-   GLenum BackMode;		/**< Either GL_POINT, GL_LINE or GL_FILL */

-   GLboolean _FrontBit;		/**< 0=GL_CCW, 1=GL_CW */

-   GLboolean CullFlag;		/**< Culling on/off flag */

-   GLboolean SmoothFlag;	/**< True if GL_POLYGON_SMOOTH is enabled */

-   GLboolean StippleFlag;	/**< True if GL_POLYGON_STIPPLE is enabled */

-   GLenum CullFaceMode;		/**< Culling mode GL_FRONT or GL_BACK */

-   GLfloat OffsetFactor;	/**< Polygon offset factor, from user */

-   GLfloat OffsetUnits;		/**< Polygon offset units, from user */

-   GLboolean OffsetPoint;	/**< Offset in GL_POINT mode */

-   GLboolean OffsetLine;	/**< Offset in GL_LINE mode */

-   GLboolean OffsetFill;	/**< Offset in GL_FILL mode */

-};

-

-

-/**

- * Scissor attributes (GL_SCISSOR_BIT).

- */

-struct gl_scissor_attrib

-{

-   GLboolean Enabled;		/**< Scissor test enabled? */

-   GLint X, Y;			/**< Lower left corner of box */

-   GLsizei Width, Height;	/**< Size of box */

-};

-

-

-/**

- * Stencil attribute group (GL_STENCIL_BUFFER_BIT).

- *

- * Three sets of stencil data are tracked so that OpenGL 2.0,

- * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported

- * simultaneously.  In each of the stencil state arrays, element 0 corresponds

- * to GL_FRONT.  Element 1 corresponds to the OpenGL 2.0 /

- * GL_ATI_separate_stencil GL_BACK state.  Element 2 corresponds to the

- * GL_EXT_stencil_two_side GL_BACK state.

- *

- * The derived value \c _BackFace is either 1 or 2 depending on whether or

- * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.

- *

- * The derived value \c _TestTwoSide is set when the front-face and back-face

- * stencil state are different.

- */

-struct gl_stencil_attrib

-{

-   GLboolean Enabled;		/**< Enabled flag */

-   GLboolean TestTwoSide;	/**< GL_EXT_stencil_two_side */

-   GLubyte ActiveFace;		/**< GL_EXT_stencil_two_side (0 or 2) */

-   GLboolean _Enabled;          /**< Enabled and stencil buffer present */

-   GLboolean _TestTwoSide;

-   GLubyte _BackFace;           /**< Current back stencil state (1 or 2) */

-   GLenum Function[3];		/**< Stencil function */

-   GLenum FailFunc[3];		/**< Fail function */

-   GLenum ZPassFunc[3];		/**< Depth buffer pass function */

-   GLenum ZFailFunc[3];		/**< Depth buffer fail function */

-   GLint Ref[3];		/**< Reference value */

-   GLuint ValueMask[3];		/**< Value mask */

-   GLuint WriteMask[3];		/**< Write mask */

-   GLuint Clear;		/**< Clear value */

-};

-

-

-/**

- * An index for each type of texture object.  These correspond to the GL

- * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.

- * Note: the order is from highest priority to lowest priority.

- */

-typedef enum

-{

-   TEXTURE_2D_ARRAY_INDEX,

-   TEXTURE_1D_ARRAY_INDEX,

-   TEXTURE_CUBE_INDEX,

-   TEXTURE_3D_INDEX,

-   TEXTURE_RECT_INDEX,

-   TEXTURE_2D_INDEX,

-   TEXTURE_1D_INDEX,

-   NUM_TEXTURE_TARGETS

-} gl_texture_index;

-

-

-/**

- * Bit flags for each type of texture object

- * Used for Texture.Unit[]._ReallyEnabled flags.

- */

-/*@{*/

-#define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)

-#define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)

-#define TEXTURE_CUBE_BIT     (1 << TEXTURE_CUBE_INDEX)

-#define TEXTURE_3D_BIT       (1 << TEXTURE_3D_INDEX)

-#define TEXTURE_RECT_BIT     (1 << TEXTURE_RECT_INDEX)

-#define TEXTURE_2D_BIT       (1 << TEXTURE_2D_INDEX)

-#define TEXTURE_1D_BIT       (1 << TEXTURE_1D_INDEX)

-/*@}*/

-

-

-/**

- * TexGenEnabled flags.

- */

-/*@{*/

-#define S_BIT 1

-#define T_BIT 2

-#define R_BIT 4

-#define Q_BIT 8

-#define STR_BITS (S_BIT | T_BIT | R_BIT)

-/*@}*/

-

-

-/**

- * Bit flag versions of the corresponding GL_ constants.

- */

-/*@{*/

-#define TEXGEN_SPHERE_MAP        0x1

-#define TEXGEN_OBJ_LINEAR        0x2

-#define TEXGEN_EYE_LINEAR        0x4

-#define TEXGEN_REFLECTION_MAP_NV 0x8

-#define TEXGEN_NORMAL_MAP_NV     0x10

-

-#define TEXGEN_NEED_NORMALS      (TEXGEN_SPHERE_MAP        | \

-				  TEXGEN_REFLECTION_MAP_NV | \

-				  TEXGEN_NORMAL_MAP_NV)

-#define TEXGEN_NEED_EYE_COORD    (TEXGEN_SPHERE_MAP        | \

-				  TEXGEN_REFLECTION_MAP_NV | \

-				  TEXGEN_NORMAL_MAP_NV     | \

-				  TEXGEN_EYE_LINEAR)

-/*@}*/

-

-

-

-/** Tex-gen enabled for texture unit? */

-#define ENABLE_TEXGEN(unit) (1 << (unit))

-

-/** Non-identity texture matrix for texture unit? */

-#define ENABLE_TEXMAT(unit) (1 << (unit))

-

-

-/**

- * Texel fetch function prototype.  We use texel fetch functions to

- * extract RGBA, color indexes and depth components out of 1D, 2D and 3D

- * texture images.  These functions help to isolate us from the gritty

- * details of all the various texture image encodings.

- * 

- * \param texImage texture image.

- * \param col texel column.

- * \param row texel row.

- * \param img texel image level/layer.

- * \param texelOut output texel (up to 4 GLchans)

- */

-typedef void (*FetchTexelFuncC)( const struct gl_texture_image *texImage,

-                                 GLint col, GLint row, GLint img,

-                                 GLchan *texelOut );

-

-/**

- * As above, but returns floats.

- * Used for depth component images and for upcoming signed/float

- * texture images.

- */

-typedef void (*FetchTexelFuncF)( const struct gl_texture_image *texImage,

-                                 GLint col, GLint row, GLint img,

-                                 GLfloat *texelOut );

-

-

-typedef void (*StoreTexelFunc)(struct gl_texture_image *texImage,

-                               GLint col, GLint row, GLint img,

-                               const void *texel);

-

-

-/**

- * Texture image state.  Describes the dimensions of a texture image,

- * the texel format and pointers to Texel Fetch functions.

- */

-struct gl_texture_image

-{

-   GLint InternalFormat;	/**< Internal format as given by the user */

-   GLenum _BaseFormat;		/**< Either GL_RGB, GL_RGBA, GL_ALPHA,

-				 *   GL_LUMINANCE, GL_LUMINANCE_ALPHA,

-				 *   GL_INTENSITY, GL_COLOR_INDEX,

-				 *   GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT

-                                 *   only. Used for choosing TexEnv arithmetic.

-				 */

-   gl_format TexFormat;         /**< The actual texture memory format */

-

-   GLuint Border;		/**< 0 or 1 */

-   GLuint Width;		/**< = 2^WidthLog2 + 2*Border */

-   GLuint Height;		/**< = 2^HeightLog2 + 2*Border */

-   GLuint Depth;		/**< = 2^DepthLog2 + 2*Border */

-   GLuint Width2;		/**< = Width - 2*Border */

-   GLuint Height2;		/**< = Height - 2*Border */

-   GLuint Depth2;		/**< = Depth - 2*Border */

-   GLuint WidthLog2;		/**< = log2(Width2) */

-   GLuint HeightLog2;		/**< = log2(Height2) */

-   GLuint DepthLog2;		/**< = log2(Depth2) */

-   GLuint MaxLog2;		/**< = MAX(WidthLog2, HeightLog2) */

-   GLfloat WidthScale;		/**< used for mipmap LOD computation */

-   GLfloat HeightScale;		/**< used for mipmap LOD computation */

-   GLfloat DepthScale;		/**< used for mipmap LOD computation */

-   GLboolean IsClientData;	/**< Data owned by client? */

-   GLboolean _IsPowerOfTwo;	/**< Are all dimensions powers of two? */

-

-   struct gl_texture_object *TexObject;  /**< Pointer back to parent object */

-

-   FetchTexelFuncC FetchTexelc;	/**< GLchan texel fetch function pointer */

-   FetchTexelFuncF FetchTexelf;	/**< Float texel fetch function pointer */

-

-   GLuint RowStride;		/**< Padded width in units of texels */

-   GLuint *ImageOffsets;        /**< if 3D texture: array [Depth] of offsets to

-                                     each 2D slice in 'Data', in texels */

-   GLvoid *Data;		/**< Image data, accessed via FetchTexel() */

-

-   /**

-    * \name For device driver:

-    */

-   /*@{*/

-   void *DriverData;		/**< Arbitrary device driver data */

-   /*@}*/

-};

-

-

-/**

- * Indexes for cube map faces.

- */

-typedef enum

-{

-   FACE_POS_X = 0,

-   FACE_NEG_X = 1,

-   FACE_POS_Y = 2,

-   FACE_NEG_Y = 3,

-   FACE_POS_Z = 4,

-   FACE_NEG_Z = 5,

-   MAX_FACES = 6

-} gl_face_index;

-

-

-/**

- * Texture object state.  Contains the array of mipmap images, border color,

- * wrap modes, filter modes, shadow/texcompare state, and the per-texture

- * color palette.

- */

-struct gl_texture_object

-{

-   _glthread_Mutex Mutex;	/**< for thread safety */

-   GLint RefCount;		/**< reference count */

-   GLuint Name;			/**< the user-visible texture object ID */

-   GLenum Target;               /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */

-   GLfloat Priority;		/**< in [0,1] */

-   union {

-      GLfloat f[4];

-      GLuint ui[4];

-      GLint i[4];

-   } BorderColor;               /**< Interpreted according to texture format */

-   GLenum WrapS;		/**< S-axis texture image wrap mode */

-   GLenum WrapT;		/**< T-axis texture image wrap mode */

-   GLenum WrapR;		/**< R-axis texture image wrap mode */

-   GLenum MinFilter;		/**< minification filter */

-   GLenum MagFilter;		/**< magnification filter */

-   GLfloat MinLod;		/**< min lambda, OpenGL 1.2 */

-   GLfloat MaxLod;		/**< max lambda, OpenGL 1.2 */

-   GLfloat LodBias;		/**< OpenGL 1.4 */

-   GLint BaseLevel;		/**< min mipmap level, OpenGL 1.2 */

-   GLint MaxLevel;		/**< max mipmap level, OpenGL 1.2 */

-   GLfloat MaxAnisotropy;	/**< GL_EXT_texture_filter_anisotropic */

-   GLenum CompareMode;		/**< GL_ARB_shadow */

-   GLenum CompareFunc;		/**< GL_ARB_shadow */

-   GLfloat CompareFailValue;    /**< GL_ARB_shadow_ambient */

-   GLenum DepthMode;		/**< GL_ARB_depth_texture */

-   GLint _MaxLevel;		/**< actual max mipmap level (q in the spec) */

-   GLfloat _MaxLambda;		/**< = _MaxLevel - BaseLevel (q - b in spec) */

-   GLint CropRect[4];           /**< GL_OES_draw_texture */

-   GLenum Swizzle[4];           /**< GL_EXT_texture_swizzle */

-   GLuint _Swizzle;             /**< same as Swizzle, but SWIZZLE_* format */

-   GLboolean GenerateMipmap;    /**< GL_SGIS_generate_mipmap */

-   GLboolean _Complete;		/**< Is texture object complete? */

-   GLboolean _RenderToTexture;  /**< Any rendering to this texture? */

-   GLboolean Purgeable;         /**< Is the buffer purgeable under memory pressure? */

-   GLenum sRGBDecode;           /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */

-

-   /** Actual texture images, indexed by [cube face] and [mipmap level] */

-   struct gl_texture_image *Image[MAX_FACES][MAX_TEXTURE_LEVELS];

-

-   /** GL_EXT_paletted_texture */

-   struct gl_color_table Palette;

-

-   /**

-    * \name For device driver.

-    * Note: instead of attaching driver data to this pointer, it's preferable

-    * to instead use this struct as a base class for your own texture object

-    * class.  Driver->NewTextureObject() can be used to implement the

-    * allocation.

-    */

-   void *DriverData;	/**< Arbitrary device driver data */

-};

-

-

-/** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */

-#define MAX_COMBINER_TERMS 4

-

-

-/**

- * Texture combine environment state.

- */

-struct gl_tex_env_combine_state

-{

-   GLenum ModeRGB;       /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */

-   GLenum ModeA;         /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */

-   /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */

-   GLenum SourceRGB[MAX_COMBINER_TERMS];

-   GLenum SourceA[MAX_COMBINER_TERMS];

-   /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */

-   GLenum OperandRGB[MAX_COMBINER_TERMS];

-   GLenum OperandA[MAX_COMBINER_TERMS];

-   GLuint ScaleShiftRGB; /**< 0, 1 or 2 */

-   GLuint ScaleShiftA;   /**< 0, 1 or 2 */

-   GLuint _NumArgsRGB;   /**< Number of inputs used for the RGB combiner */

-   GLuint _NumArgsA;     /**< Number of inputs used for the A combiner */

-};

-

-

-/**

- * Texture coord generation state.

- */

-struct gl_texgen

-{

-   GLenum Mode;         /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */

-   GLbitfield _ModeBit; /**< TEXGEN_x bit corresponding to Mode */

-   GLfloat ObjectPlane[4];

-   GLfloat EyePlane[4];

-};

-

-

-/**

- * Texture unit state.  Contains enable flags, texture environment/function/

- * combiners, texgen state, pointers to current texture objects and

- * post-filter color tables.

- */

-struct gl_texture_unit

-{

-   GLbitfield Enabled;          /**< bitmask of TEXTURE_*_BIT flags */

-   GLbitfield _ReallyEnabled;   /**< 0 or exactly one of TEXTURE_*_BIT flags */

-

-   GLenum EnvMode;              /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */

-   GLfloat EnvColor[4];

-

-   struct gl_texgen GenS;

-   struct gl_texgen GenT;

-   struct gl_texgen GenR;

-   struct gl_texgen GenQ;

-   GLbitfield TexGenEnabled;	/**< Bitwise-OR of [STRQ]_BIT values */

-   GLbitfield _GenFlags;	/**< Bitwise-OR of Gen[STRQ]._ModeBit */

-

-   GLfloat LodBias;		/**< for biasing mipmap levels */

-   GLenum BumpTarget;

-   GLfloat RotMatrix[4]; /* 2x2 matrix */

-

-   /** 

-    * \name GL_EXT_texture_env_combine 

-    */

-   struct gl_tex_env_combine_state Combine;

-

-   /**

-    * Derived state based on \c EnvMode and the \c BaseFormat of the

-    * currently enabled texture.

-    */

-   struct gl_tex_env_combine_state _EnvMode;

-

-   /**

-    * Currently enabled combiner state.  This will point to either

-    * \c Combine or \c _EnvMode.

-    */

-   struct gl_tex_env_combine_state *_CurrentCombine;

-

-   /** Current texture object pointers */

-   struct gl_texture_object *CurrentTex[NUM_TEXTURE_TARGETS];

-

-   /** Points to highest priority, complete and enabled texture object */

-   struct gl_texture_object *_Current;

-

-   /** GL_SGI_texture_color_table */

-   /*@{*/

-   struct gl_color_table ColorTable;

-   struct gl_color_table ProxyColorTable;

-   GLboolean ColorTableEnabled;

-   /*@}*/

-};

-

-

-/**

- * Texture attribute group (GL_TEXTURE_BIT).

- */

-struct gl_texture_attrib

-{

-   GLuint CurrentUnit;   /**< GL_ACTIVE_TEXTURE */

-   struct gl_texture_unit Unit[MAX_COMBINED_TEXTURE_IMAGE_UNITS];

-

-   struct gl_texture_object *ProxyTex[NUM_TEXTURE_TARGETS];

-

-   /** GL_ARB_seamless_cubemap */

-   GLboolean CubeMapSeamless;

-

-   /** GL_EXT_shared_texture_palette */

-   GLboolean SharedPalette;

-   struct gl_color_table Palette;

-

-   /** Texture units/samplers used by vertex or fragment texturing */

-   GLbitfield _EnabledUnits;

-

-   /** Texture coord units/sets used for fragment texturing */

-   GLbitfield _EnabledCoordUnits;

-

-   /** Texture coord units that have texgen enabled */

-   GLbitfield _TexGenEnabled;

-

-   /** Texture coord units that have non-identity matrices */

-   GLbitfield _TexMatEnabled;

-

-   /** Bitwise-OR of all Texture.Unit[i]._GenFlags */

-   GLbitfield _GenFlags;

-};

-

-

-/**

- * Transformation attribute group (GL_TRANSFORM_BIT).

- */

-struct gl_transform_attrib

-{

-   GLenum MatrixMode;				/**< Matrix mode */

-   GLfloat EyeUserPlane[MAX_CLIP_PLANES][4];	/**< User clip planes */

-   GLfloat _ClipUserPlane[MAX_CLIP_PLANES][4];	/**< derived */

-   GLbitfield ClipPlanesEnabled;                /**< on/off bitmask */

-   GLboolean Normalize;				/**< Normalize all normals? */

-   GLboolean RescaleNormals;			/**< GL_EXT_rescale_normal */

-   GLboolean RasterPositionUnclipped;           /**< GL_IBM_rasterpos_clip */

-   GLboolean DepthClamp;			/**< GL_ARB_depth_clamp */

-

-   GLfloat CullEyePos[4];

-   GLfloat CullObjPos[4];

-};

-

-

-/**

- * Viewport attribute group (GL_VIEWPORT_BIT).

- */

-struct gl_viewport_attrib

-{

-   GLint X, Y;			/**< position */

-   GLsizei Width, Height;	/**< size */

-   GLfloat Near, Far;		/**< Depth buffer range */

-   GLmatrix _WindowMap;		/**< Mapping transformation as a matrix. */

-};

-

-

-/**

- * GL_ARB_vertex/pixel_buffer_object buffer object

- */

-struct gl_buffer_object

-{

-   _glthread_Mutex Mutex;

-   GLint RefCount;

-   GLuint Name;

-   GLenum Usage;        /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */

-   GLsizeiptrARB Size;  /**< Size of buffer storage in bytes */

-   GLubyte *Data;       /**< Location of storage either in RAM or VRAM. */

-   /** Fields describing a mapped buffer */

-   /*@{*/

-   GLbitfield AccessFlags; /**< Mask of GL_MAP_x_BIT flags */

-   GLvoid *Pointer;     /**< User-space address of mapping */

-   GLintptr Offset;     /**< Mapped offset */

-   GLsizeiptr Length;   /**< Mapped length */

-   /*@}*/

-   GLboolean Written;   /**< Ever written to? (for debugging) */

-   GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */

-};

-

-

-/**

- * Client pixel packing/unpacking attributes

- */

-struct gl_pixelstore_attrib

-{

-   GLint Alignment;

-   GLint RowLength;

-   GLint SkipPixels;

-   GLint SkipRows;

-   GLint ImageHeight;

-   GLint SkipImages;

-   GLboolean SwapBytes;

-   GLboolean LsbFirst;

-   GLboolean ClientStorage; /**< GL_APPLE_client_storage */

-   GLboolean Invert;        /**< GL_MESA_pack_invert */

-   struct gl_buffer_object *BufferObj; /**< GL_ARB_pixel_buffer_object */

-};

-

-

-/**

- * Client vertex array attributes

- */

-struct gl_client_array

-{

-   GLint Size;                  /**< components per element (1,2,3,4) */

-   GLenum Type;                 /**< datatype: GL_FLOAT, GL_INT, etc */

-   GLenum Format;               /**< default: GL_RGBA, but may be GL_BGRA */

-   GLsizei Stride;		/**< user-specified stride */

-   GLsizei StrideB;		/**< actual stride in bytes */

-   const GLubyte *Ptr;          /**< Points to array data */

-   GLboolean Enabled;		/**< Enabled flag is a boolean */

-   GLboolean Normalized;        /**< GL_ARB_vertex_program */

-   GLboolean Integer;           /**< Integer-valued? */

-   GLuint InstanceDivisor;      /**< GL_ARB_instanced_arrays */

-   GLuint _ElementSize;         /**< size of each element in bytes */

-

-   struct gl_buffer_object *BufferObj;/**< GL_ARB_vertex_buffer_object */

-   GLuint _MaxElement;          /**< max element index into array buffer + 1 */

-};

-

-

-/**

- * Collection of vertex arrays.  Defined by the GL_APPLE_vertex_array_object

- * extension, but a nice encapsulation in any case.

- */

-struct gl_array_object

-{

-   /** Name of the array object as received from glGenVertexArrayAPPLE. */

-   GLuint Name;

-

-   GLint RefCount;

-   _glthread_Mutex Mutex;

-   GLboolean VBOonly;  /**< require all arrays to live in VBOs? */

-

-   /** Conventional vertex arrays */

-   /*@{*/

-   struct gl_client_array Vertex;

-   struct gl_client_array Weight;

-   struct gl_client_array Normal;

-   struct gl_client_array Color;

-   struct gl_client_array SecondaryColor;

-   struct gl_client_array FogCoord;

-   struct gl_client_array Index;

-   struct gl_client_array EdgeFlag;

-   struct gl_client_array TexCoord[MAX_TEXTURE_COORD_UNITS];

-   struct gl_client_array PointSize;

-   /*@}*/

-

-   /**

-    * Generic arrays for vertex programs/shaders.

-    * For NV vertex programs, these attributes alias and take priority

-    * over the conventional attribs above.  For ARB vertex programs and

-    * GLSL vertex shaders, these attributes are separate.

-    */

-   struct gl_client_array VertexAttrib[MAX_VERTEX_GENERIC_ATTRIBS];

-

-   /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */

-   GLbitfield _Enabled;

-

-   /**

-    * Min of all enabled arrays' _MaxElement.  When arrays reside inside VBOs

-    * we can determine the max legal (in bounds) glDrawElements array index.

-    */

-   GLuint _MaxElement;

-};

-

-

-/**

- * Vertex array state

- */

-struct gl_array_attrib

-{

-   /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */

-   struct gl_array_object *ArrayObj;

-

-   /** The default vertex array object */

-   struct gl_array_object *DefaultArrayObj;

-

-   /** Array objects (GL_ARB/APPLE_vertex_array_object) */

-   struct _mesa_HashTable *Objects;

-

-   GLint ActiveTexture;		/**< Client Active Texture */

-   GLuint LockFirst;            /**< GL_EXT_compiled_vertex_array */

-   GLuint LockCount;            /**< GL_EXT_compiled_vertex_array */

-

-   /** GL 3.1 (slightly different from GL_NV_primitive_restart) */

-   GLboolean PrimitiveRestart;

-   GLuint RestartIndex;

-

-   GLbitfield NewState;		/**< mask of _NEW_ARRAY_* values */

-   GLboolean RebindArrays; /**< whether the VBO module should rebind arrays */

-

-   /* GL_ARB_vertex_buffer_object */

-   struct gl_buffer_object *ArrayBufferObj;

-   struct gl_buffer_object *ElementArrayBufferObj;

-};

-

-

-/**

- * Feedback buffer state

- */

-struct gl_feedback

-{

-   GLenum Type;

-   GLbitfield _Mask;    /**< FB_* bits */

-   GLfloat *Buffer;

-   GLuint BufferSize;

-   GLuint Count;

-};

-

-

-/**

- * Selection buffer state

- */

-struct gl_selection

-{

-   GLuint *Buffer;	/**< selection buffer */

-   GLuint BufferSize;	/**< size of the selection buffer */

-   GLuint BufferCount;	/**< number of values in the selection buffer */

-   GLuint Hits;		/**< number of records in the selection buffer */

-   GLuint NameStackDepth; /**< name stack depth */

-   GLuint NameStack[MAX_NAME_STACK_DEPTH]; /**< name stack */

-   GLboolean HitFlag;	/**< hit flag */

-   GLfloat HitMinZ;	/**< minimum hit depth */

-   GLfloat HitMaxZ;	/**< maximum hit depth */

-};

-

-

-/**

- * 1-D Evaluator control points

- */

-struct gl_1d_map

-{

-   GLuint Order;	/**< Number of control points */

-   GLfloat u1, u2, du;	/**< u1, u2, 1.0/(u2-u1) */

-   GLfloat *Points;	/**< Points to contiguous control points */

-};

-

-

-/**

- * 2-D Evaluator control points

- */

-struct gl_2d_map

-{

-   GLuint Uorder;		/**< Number of control points in U dimension */

-   GLuint Vorder;		/**< Number of control points in V dimension */

-   GLfloat u1, u2, du;

-   GLfloat v1, v2, dv;

-   GLfloat *Points;		/**< Points to contiguous control points */

-};

-

-

-/**

- * All evaluator control point state

- */

-struct gl_evaluators

-{

-   /** 

-    * \name 1-D maps

-    */

-   /*@{*/

-   struct gl_1d_map Map1Vertex3;

-   struct gl_1d_map Map1Vertex4;

-   struct gl_1d_map Map1Index;

-   struct gl_1d_map Map1Color4;

-   struct gl_1d_map Map1Normal;

-   struct gl_1d_map Map1Texture1;

-   struct gl_1d_map Map1Texture2;

-   struct gl_1d_map Map1Texture3;

-   struct gl_1d_map Map1Texture4;

-   struct gl_1d_map Map1Attrib[16];  /**< GL_NV_vertex_program */

-   /*@}*/

-

-   /** 

-    * \name 2-D maps 

-    */

-   /*@{*/

-   struct gl_2d_map Map2Vertex3;

-   struct gl_2d_map Map2Vertex4;

-   struct gl_2d_map Map2Index;

-   struct gl_2d_map Map2Color4;

-   struct gl_2d_map Map2Normal;

-   struct gl_2d_map Map2Texture1;

-   struct gl_2d_map Map2Texture2;

-   struct gl_2d_map Map2Texture3;

-   struct gl_2d_map Map2Texture4;

-   struct gl_2d_map Map2Attrib[16];  /**< GL_NV_vertex_program */

-   /*@}*/

-};

-

-

-/**

- * Names of the various vertex/fragment program register files, etc.

- *

- * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)

- * All values should fit in a 4-bit field.

- *

- * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,

- * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to

- * be "uniform" variables since they can only be set outside glBegin/End.

- * They're also all stored in the same Parameters array.

- */

-typedef enum

-{

-   PROGRAM_TEMPORARY,   /**< machine->Temporary[] */

-   PROGRAM_INPUT,       /**< machine->Inputs[] */

-   PROGRAM_OUTPUT,      /**< machine->Outputs[] */

-   PROGRAM_VARYING,     /**< machine->Inputs[]/Outputs[] */

-   PROGRAM_LOCAL_PARAM, /**< gl_program->LocalParams[] */

-   PROGRAM_ENV_PARAM,   /**< gl_program->Parameters[] */

-   PROGRAM_STATE_VAR,   /**< gl_program->Parameters[] */

-   PROGRAM_NAMED_PARAM, /**< gl_program->Parameters[] */

-   PROGRAM_CONSTANT,    /**< gl_program->Parameters[] */

-   PROGRAM_UNIFORM,     /**< gl_program->Parameters[] */

-   PROGRAM_WRITE_ONLY,  /**< A dummy, write-only register */

-   PROGRAM_ADDRESS,     /**< machine->AddressReg */

-   PROGRAM_SAMPLER,     /**< for shader samplers, compile-time only */

-   PROGRAM_SYSTEM_VALUE,/**< InstanceId, PrimitiveID, etc. */

-   PROGRAM_UNDEFINED,   /**< Invalid/TBD value */

-   PROGRAM_FILE_MAX

-} gl_register_file;

-

-

-/**

- * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be

- * one of these values.

- */

-typedef enum

-{

-   SYSTEM_VALUE_FRONT_FACE,  /**< Fragment shader only (not done yet) */

-   SYSTEM_VALUE_INSTANCE_ID, /**< Vertex shader only */

-   SYSTEM_VALUE_MAX          /**< Number of values */

-} gl_system_value;

-

-

-/** Vertex and fragment instructions */

-struct prog_instruction;

-struct gl_program_parameter_list;

-struct gl_uniform_list;

-

-

-/**

- * Base class for any kind of program object

- */

-struct gl_program

-{

-   GLuint Id;

-   GLubyte *String;  /**< Null-terminated program text */

-   GLint RefCount;

-   GLenum Target;    /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */

-   GLenum Format;    /**< String encoding format */

-   GLboolean Resident;

-

-   struct prog_instruction *Instructions;

-

-   GLbitfield InputsRead;     /**< Bitmask of which input regs are read */

-   GLbitfield64 OutputsWritten; /**< Bitmask of which output regs are written */

-   GLbitfield SystemValuesRead;   /**< Bitmask of SYSTEM_VALUE_x inputs used */

-   GLbitfield InputFlags[MAX_PROGRAM_INPUTS];   /**< PROG_PARAM_BIT_x flags */

-   GLbitfield OutputFlags[MAX_PROGRAM_OUTPUTS]; /**< PROG_PARAM_BIT_x flags */

-   GLbitfield TexturesUsed[MAX_TEXTURE_UNITS];  /**< TEXTURE_x_BIT bitmask */

-   GLbitfield SamplersUsed;   /**< Bitfield of which samplers are used */

-   GLbitfield ShadowSamplers; /**< Texture units used for shadow sampling. */

-

-

-   /** Named parameters, constants, etc. from program text */

-   struct gl_program_parameter_list *Parameters;

-   /** Numbered local parameters */

-   GLfloat LocalParams[MAX_PROGRAM_LOCAL_PARAMS][4];

-

-   /** Vertex/fragment shader varying vars */

-   struct gl_program_parameter_list *Varying;

-   /** Vertex program user-defined attributes */

-   struct gl_program_parameter_list *Attributes;

-

-   /** Map from sampler unit to texture unit (set by glUniform1i()) */

-   GLubyte SamplerUnits[MAX_SAMPLERS];

-   /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */

-   gl_texture_index SamplerTargets[MAX_SAMPLERS];

-

-   /** Bitmask of which register files are read/written with indirect

-    * addressing.  Mask of (1 << PROGRAM_x) bits.

-    */

-   GLbitfield IndirectRegisterFiles;

-

-   /** Logical counts */

-   /*@{*/

-   GLuint NumInstructions;

-   GLuint NumTemporaries;

-   GLuint NumParameters;

-   GLuint NumAttributes;

-   GLuint NumAddressRegs;

-   GLuint NumAluInstructions;

-   GLuint NumTexInstructions;

-   GLuint NumTexIndirections;

-   /*@}*/

-   /** Native, actual h/w counts */

-   /*@{*/

-   GLuint NumNativeInstructions;

-   GLuint NumNativeTemporaries;

-   GLuint NumNativeParameters;

-   GLuint NumNativeAttributes;

-   GLuint NumNativeAddressRegs;

-   GLuint NumNativeAluInstructions;

-   GLuint NumNativeTexInstructions;

-   GLuint NumNativeTexIndirections;

-   /*@}*/

-};

-

-

-/** Vertex program object */

-struct gl_vertex_program

-{

-   struct gl_program Base;   /**< base class */

-   GLboolean IsNVProgram;    /**< is this a GL_NV_vertex_program program? */

-   GLboolean IsPositionInvariant;

-};

-

-

-/** Geometry program object */

-struct gl_geometry_program

-{

-   struct gl_program Base;   /**< base class */

-

-   GLint VerticesOut;

-   GLenum InputType;  /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,

-                           GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */

-   GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */

-};

-

-

-/** Fragment program object */

-struct gl_fragment_program

-{

-   struct gl_program Base;   /**< base class */

-   GLenum FogOption;

-   GLboolean UsesKill;          /**< shader uses KIL instruction */

-   GLboolean OriginUpperLeft;

-   GLboolean PixelCenterInteger;

-   enum gl_frag_depth_layout FragDepthLayout;

-};

-

-

-/**

- * State common to vertex and fragment programs.

- */

-struct gl_program_state

-{

-   GLint ErrorPos;                       /* GL_PROGRAM_ERROR_POSITION_ARB/NV */

-   const char *ErrorString;              /* GL_PROGRAM_ERROR_STRING_ARB/NV */

-};

-

-

-/**

- * Context state for vertex programs.

- */

-struct gl_vertex_program_state

-{

-   GLboolean Enabled;            /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */

-   GLboolean _Enabled;           /**< Enabled and _valid_ user program? */

-   GLboolean PointSizeEnabled;   /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */

-   GLboolean TwoSideEnabled;     /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */

-   struct gl_vertex_program *Current;  /**< User-bound vertex program */

-

-   /** Currently enabled and valid vertex program (including internal

-    * programs, user-defined vertex programs and GLSL vertex shaders).

-    * This is the program we must use when rendering.

-    */

-   struct gl_vertex_program *_Current;

-

-   GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */

-

-   /* For GL_NV_vertex_program only: */

-   GLenum TrackMatrix[MAX_PROGRAM_ENV_PARAMS / 4];

-   GLenum TrackMatrixTransform[MAX_PROGRAM_ENV_PARAMS / 4];

-

-   /** Should fixed-function T&L be implemented with a vertex prog? */

-   GLboolean _MaintainTnlProgram;

-

-   /** Program to emulate fixed-function T&L (see above) */

-   struct gl_vertex_program *_TnlProgram;

-

-   /** Cache of fixed-function programs */

-   struct gl_program_cache *Cache;

-

-   GLboolean _Overriden;

-};

-

-

-/**

- * Context state for geometry programs.

- */

-struct gl_geometry_program_state

-{

-   GLboolean Enabled;               /**< GL_ARB_GEOMETRY_SHADER4 */

-   GLboolean _Enabled;              /**< Enabled and valid program? */

-   struct gl_geometry_program *Current;  /**< user-bound geometry program */

-

-   /** Currently enabled and valid program (including internal programs

-    * and compiled shader programs).

-    */

-   struct gl_geometry_program *_Current;

-

-   GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */

-

-   /** Cache of fixed-function programs */

-   struct gl_program_cache *Cache;

-};

-

-/**

- * Context state for fragment programs.

- */

-struct gl_fragment_program_state

-{

-   GLboolean Enabled;     /**< User-set fragment program enable flag */

-   GLboolean _Enabled;    /**< Enabled and _valid_ user program? */

-   struct gl_fragment_program *Current;  /**< User-bound fragment program */

-

-   /** Currently enabled and valid fragment program (including internal

-    * programs, user-defined fragment programs and GLSL fragment shaders).

-    * This is the program we must use when rendering.

-    */

-   struct gl_fragment_program *_Current;

-

-   GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */

-

-   /** Should fixed-function texturing be implemented with a fragment prog? */

-   GLboolean _MaintainTexEnvProgram;

-

-   /** Program to emulate fixed-function texture env/combine (see above) */

-   struct gl_fragment_program *_TexEnvProgram;

-

-   /** Cache of fixed-function programs */

-   struct gl_program_cache *Cache;

-};

-

-

-/**

- * ATI_fragment_shader runtime state

- */

-#define ATI_FS_INPUT_PRIMARY 0

-#define ATI_FS_INPUT_SECONDARY 1

-

-struct atifs_instruction;

-struct atifs_setupinst;

-

-/**

- * ATI fragment shader

- */

-struct ati_fragment_shader

-{

-   GLuint Id;

-   GLint RefCount;

-   struct atifs_instruction *Instructions[2];

-   struct atifs_setupinst *SetupInst[2];

-   GLfloat Constants[8][4];

-   GLbitfield LocalConstDef;  /**< Indicates which constants have been set */

-   GLubyte numArithInstr[2];

-   GLubyte regsAssigned[2];

-   GLubyte NumPasses;         /**< 1 or 2 */

-   GLubyte cur_pass;

-   GLubyte last_optype;

-   GLboolean interpinp1;

-   GLboolean isValid;

-   GLuint swizzlerq;

-};

-

-/**

- * Context state for GL_ATI_fragment_shader

- */

-struct gl_ati_fragment_shader_state

-{

-   GLboolean Enabled;

-   GLboolean _Enabled;                  /**< enabled and valid shader? */

-   GLboolean Compiling;

-   GLfloat GlobalConstants[8][4];

-   struct ati_fragment_shader *Current;

-};

-

-

-/**

- * Occlusion/timer query object.

- */

-struct gl_query_object

-{

-   GLenum Target;      /**< The query target, when active */

-   GLuint Id;          /**< hash table ID/name */

-   GLuint64EXT Result; /**< the counter */

-   GLboolean Active;   /**< inside Begin/EndQuery */

-   GLboolean Ready;    /**< result is ready? */

-};

-

-

-/**

- * Context state for query objects.

- */

-struct gl_query_state

-{

-   struct _mesa_HashTable *QueryObjects;

-   struct gl_query_object *CurrentOcclusionObject; /* GL_ARB_occlusion_query */

-   struct gl_query_object *CurrentTimerObject;     /* GL_EXT_timer_query */

-

-   /** GL_NV_conditional_render */

-   struct gl_query_object *CondRenderQuery;

-

-   /** GL_EXT_transform_feedback */

-   struct gl_query_object *PrimitivesGenerated;

-   struct gl_query_object *PrimitivesWritten;

-

-   /** GL_ARB_timer_query */

-   struct gl_query_object *TimeElapsed;

-

-   GLenum CondRenderMode;

-};

-

-

-/** Sync object state */

-struct gl_sync_object {

-   struct simple_node link;

-   GLenum Type;               /**< GL_SYNC_FENCE */

-   GLuint Name;               /**< Fence name */

-   GLint RefCount;            /**< Reference count */

-   GLboolean DeletePending;   /**< Object was deleted while there were still

-			       * live references (e.g., sync not yet finished)

-			       */

-   GLenum SyncCondition;

-   GLbitfield Flags;          /**< Flags passed to glFenceSync */

-   GLuint StatusFlag:1;       /**< Has the sync object been signaled? */

-};

-

-

-/** Set by #pragma directives */

-struct gl_sl_pragmas

-{

-   GLboolean IgnoreOptimize;  /**< ignore #pragma optimize(on/off) ? */

-   GLboolean IgnoreDebug;     /**< ignore #pragma debug(on/off) ? */

-   GLboolean Optimize;  /**< defaults on */

-   GLboolean Debug;     /**< defaults off */

-};

-

-

-/**

- * A GLSL vertex or fragment shader object.

- */

-struct gl_shader

-{

-   GLenum Type;  /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */

-   GLuint Name;  /**< AKA the handle */

-   GLint RefCount;  /**< Reference count */

-   GLboolean DeletePending;

-   GLboolean CompileStatus;

-   const GLchar *Source;  /**< Source code string */

-   GLuint SourceChecksum;       /**< for debug/logging purposes */

-   struct gl_program *Program;  /**< Post-compile assembly code */

-   GLchar *InfoLog;

-   struct gl_sl_pragmas Pragmas;

-

-   unsigned Version;       /**< GLSL version used for linking */

-

-   struct exec_list *ir;

-   struct glsl_symbol_table *symbols;

-

-   /** Shaders containing built-in functions that are used for linking. */

-   struct gl_shader *builtins_to_link[16];

-   unsigned num_builtins_to_link;

-};

-

-

-/**

- * A GLSL program object.

- * Basically a linked collection of vertex and fragment shaders.

- */

-struct gl_shader_program

-{

-   GLenum Type;  /**< Always GL_SHADER_PROGRAM (internal token) */

-   GLuint Name;  /**< aka handle or ID */

-   GLint RefCount;  /**< Reference count */

-   GLboolean DeletePending;

-

-   GLuint NumShaders;          /**< number of attached shaders */

-   struct gl_shader **Shaders; /**< List of attached the shaders */

-

-   /** User-defined attribute bindings (glBindAttribLocation) */

-   struct gl_program_parameter_list *Attributes;

-

-   /** Transform feedback varyings */

-   struct {

-      GLenum BufferMode;

-      GLuint NumVarying;

-      GLchar **VaryingNames;  /**< Array [NumVarying] of char * */

-   } TransformFeedback;

-

-   /** Geometry shader state - copied into gl_geometry_program at link time */

-   struct {

-      GLint VerticesOut;

-      GLenum InputType;  /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,

-                              GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */

-      GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */

-   } Geom;

-

-   /* post-link info: */

-   struct gl_vertex_program *VertexProgram;     /**< Linked vertex program */

-   struct gl_fragment_program *FragmentProgram; /**< Linked fragment prog */

-   struct gl_geometry_program *GeometryProgram; /**< Linked geometry prog */

-   struct gl_uniform_list *Uniforms;

-   struct gl_program_parameter_list *Varying;

-   GLboolean LinkStatus;   /**< GL_LINK_STATUS */

-   GLboolean Validated;

-   GLboolean _Used;        /**< Ever used for drawing? */

-   GLchar *InfoLog;

-

-   unsigned Version;       /**< GLSL version used for linking */

-

-   /**

-    * Per-stage shaders resulting from the first stage of linking.

-    *

-    * Set of linked shaders for this program.  The array is accessed using the

-    * \c MESA_SHADER_* defines.  Entries for non-existent stages will be

-    * \c NULL.

-    */

-   struct gl_shader *_LinkedShaders[MESA_SHADER_TYPES];

-};   

-

-

-#define GLSL_DUMP      0x1  /**< Dump shaders to stdout */

-#define GLSL_LOG       0x2  /**< Write shaders to files */

-#define GLSL_OPT       0x4  /**< Force optimizations (override pragmas) */

-#define GLSL_NO_OPT    0x8  /**< Force no optimizations (override pragmas) */

-#define GLSL_UNIFORMS 0x10  /**< Print glUniform calls */

-#define GLSL_NOP_VERT 0x20  /**< Force no-op vertex shaders */

-#define GLSL_NOP_FRAG 0x40  /**< Force no-op fragment shaders */

-#define GLSL_USE_PROG 0x80  /**< Log glUseProgram calls */

-

-

-/**

- * Context state for GLSL vertex/fragment shaders.

- */

-struct gl_shader_state

-{

-   /**

-    * Programs used for rendering

-    *

-    * There is a separate program set for each shader stage.  If

-    * GL_EXT_separate_shader_objects is not supported, each of these must point

-    * to \c NULL or to the same program.

-    */

-   struct gl_shader_program *CurrentVertexProgram;

-   struct gl_shader_program *CurrentGeometryProgram;

-   struct gl_shader_program *CurrentFragmentProgram;

-

-   /**

-    * Program used by glUniform calls.

-    *

-    * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.

-    */

-   struct gl_shader_program *ActiveProgram;

-

-   void *MemPool;

-

-   GLbitfield Flags;                    /**< Mask of GLSL_x flags */

-};

-

-/**

- * Compiler options for a single GLSL shaders type

- */

-struct gl_shader_compiler_options

-{

-   /** Driver-selectable options: */

-   GLboolean EmitCondCodes;             /**< Use condition codes? */

-   GLboolean EmitNVTempInitialization;  /**< 0-fill NV temp registers */

-   /**

-    * Attempts to flatten all ir_if (OPCODE_IF) for GPUs that can't

-    * support control flow.

-    */

-   GLboolean EmitNoIfs;

-   GLboolean EmitNoLoops;

-   GLboolean EmitNoFunctions;

-   GLboolean EmitNoCont;                  /**< Emit CONT opcode? */

-   GLboolean EmitNoMainReturn;            /**< Emit CONT/RET opcodes? */

-   GLboolean EmitNoNoise;                 /**< Emit NOISE opcodes? */

-   GLboolean EmitNoPow;                   /**< Emit POW opcodes? */

-

-   /**

-    * \name Forms of indirect addressing the driver cannot do.

-    */

-   /*@{*/

-   GLboolean EmitNoIndirectInput;   /**< No indirect addressing of inputs */

-   GLboolean EmitNoIndirectOutput;  /**< No indirect addressing of outputs */

-   GLboolean EmitNoIndirectTemp;    /**< No indirect addressing of temps */

-   GLboolean EmitNoIndirectUniform; /**< No indirect addressing of constants */

-   /*@}*/

-

-   GLuint MaxUnrollIterations;

-

-   struct gl_sl_pragmas DefaultPragmas; /**< Default #pragma settings */

-};

-

-/**

- * Transform feedback object state

- */

-struct gl_transform_feedback_object

-{

-   GLuint Name;  /**< AKA the object ID */

-   GLint RefCount;

-   GLboolean Active;  /**< Is transform feedback enabled? */

-   GLboolean Paused;  /**< Is transform feedback paused? */

-

-   /** The feedback buffers */

-   GLuint BufferNames[MAX_FEEDBACK_ATTRIBS];

-   struct gl_buffer_object *Buffers[MAX_FEEDBACK_ATTRIBS];

-

-   /** Start of feedback data in dest buffer */

-   GLintptr Offset[MAX_FEEDBACK_ATTRIBS];

-   /** Max data to put into dest buffer (in bytes) */

-   GLsizeiptr Size[MAX_FEEDBACK_ATTRIBS];

-};

-

-

-/**

- * Context state for transform feedback.

- */

-struct gl_transform_feedback

-{

-   GLenum Mode;       /**< GL_POINTS, GL_LINES or GL_TRIANGLES */

-

-   GLboolean RasterDiscard;  /**< GL_RASTERIZER_DISCARD */

-

-   /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */

-   struct gl_buffer_object *CurrentBuffer;

-

-   /** The table of all transform feedback objects */

-   struct _mesa_HashTable *Objects;

-

-   /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */

-   struct gl_transform_feedback_object *CurrentObject;

-

-   /** The default xform-fb object (Name==0) */

-   struct gl_transform_feedback_object *DefaultObject;

-};

-

-

-

-/**

- * State which can be shared by multiple contexts:

- */

-struct gl_shared_state

-{

-   _glthread_Mutex Mutex;		   /**< for thread safety */

-   GLint RefCount;			   /**< Reference count */

-   struct _mesa_HashTable *DisplayList;	   /**< Display lists hash table */

-   struct _mesa_HashTable *TexObjects;	   /**< Texture objects hash table */

-

-   /** Default texture objects (shared by all texture units) */

-   struct gl_texture_object *DefaultTex[NUM_TEXTURE_TARGETS];

-

-   /** Fallback texture used when a bound texture is incomplete */

-   struct gl_texture_object *FallbackTex;

-

-   /**

-    * \name Thread safety and statechange notification for texture

-    * objects. 

-    *

-    * \todo Improve the granularity of locking.

-    */

-   /*@{*/

-   _glthread_Mutex TexMutex;		/**< texobj thread safety */

-   GLuint TextureStateStamp;	        /**< state notification for shared tex */

-   /*@}*/

-

-   /** Default buffer object for vertex arrays that aren't in VBOs */

-   struct gl_buffer_object *NullBufferObj;

-

-   /**

-    * \name Vertex/geometry/fragment programs

-    */

-   /*@{*/

-   struct _mesa_HashTable *Programs; /**< All vertex/fragment programs */

-   struct gl_vertex_program *DefaultVertexProgram;

-   struct gl_fragment_program *DefaultFragmentProgram;

-   struct gl_geometry_program *DefaultGeometryProgram;

-   /*@}*/

-

-   /* GL_ATI_fragment_shader */

-   struct _mesa_HashTable *ATIShaders;

-   struct ati_fragment_shader *DefaultFragmentShader;

-

-   struct _mesa_HashTable *BufferObjects;

-

-   /** Table of both gl_shader and gl_shader_program objects */

-   struct _mesa_HashTable *ShaderObjects;

-

-   /* GL_EXT_framebuffer_object */

-   struct _mesa_HashTable *RenderBuffers;

-   struct _mesa_HashTable *FrameBuffers;

-

-   /* GL_ARB_sync */

-   struct simple_node SyncObjects;

-

-   void *DriverData;  /**< Device driver shared state */

-};

-

-

-

-

-/**

- * A renderbuffer stores colors or depth values or stencil values.

- * A framebuffer object will have a collection of these.

- * Data are read/written to the buffer with a handful of Get/Put functions.

- *

- * Instances of this object are allocated with the Driver's NewRenderbuffer

- * hook.  Drivers will likely wrap this class inside a driver-specific

- * class to simulate inheritance.

- */

-struct gl_renderbuffer

-{

-#define RB_MAGIC 0xaabbccdd

-   int Magic; /** XXX TEMPORARY DEBUG INFO */

-   _glthread_Mutex Mutex;		   /**< for thread safety */

-   GLuint ClassID;        /**< Useful for drivers */

-   GLuint Name;

-   GLint RefCount;

-   GLuint Width, Height;

-   GLboolean Purgeable;   /**< Is the buffer purgeable under memory pressure? */

-

-   GLenum InternalFormat; /**< The user-specified format */

-   GLenum _BaseFormat;    /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or

-                               GL_STENCIL_INDEX. */

-   gl_format Format;      /**< The actual renderbuffer memory format */

-

-   GLubyte NumSamples;

-

-   GLenum DataType;      /**< Type of values passed to the Get/Put functions */

-   GLvoid *Data;        /**< This may not be used by some kinds of RBs */

-

-   /* Used to wrap one renderbuffer around another: */

-   struct gl_renderbuffer *Wrapped;

-

-   /* Delete this renderbuffer */

-   void (*Delete)(struct gl_renderbuffer *rb);

-

-   /* Allocate new storage for this renderbuffer */

-   GLboolean (*AllocStorage)(struct gl_context *ctx, struct gl_renderbuffer *rb,

-                             GLenum internalFormat,

-                             GLuint width, GLuint height);

-

-   /* Lock/Unlock are called before/after calling the Get/Put functions.

-    * Not sure this is the right place for these yet.

-   void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);

-   void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);

-    */

-

-   /* Return a pointer to the element/pixel at (x,y).

-    * Should return NULL if the buffer memory can't be directly addressed.

-    */

-   void *(*GetPointer)(struct gl_context *ctx, struct gl_renderbuffer *rb,

-                       GLint x, GLint y);

-

-   /* Get/Read a row of values.

-    * The values will be of format _BaseFormat and type DataType.

-    */

-   void (*GetRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,

-                  GLint x, GLint y, void *values);

-

-   /* Get/Read values at arbitrary locations.

-    * The values will be of format _BaseFormat and type DataType.

-    */

-   void (*GetValues)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,

-                     const GLint x[], const GLint y[], void *values);

-

-   /* Put/Write a row of values.

-    * The values will be of format _BaseFormat and type DataType.

-    */

-   void (*PutRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,

-                  GLint x, GLint y, const void *values, const GLubyte *mask);

-

-   /* Put/Write a row of RGB values.  This is a special-case routine that's

-    * only used for RGBA renderbuffers when the source data is GL_RGB. That's

-    * a common case for glDrawPixels and some triangle routines.

-    * The values will be of format GL_RGB and type DataType.

-    */

-   void (*PutRowRGB)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,

-                    GLint x, GLint y, const void *values, const GLubyte *mask);

-

-

-   /* Put/Write a row of identical values.

-    * The values will be of format _BaseFormat and type DataType.

-    */

-   void (*PutMonoRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,

-                     GLint x, GLint y, const void *value, const GLubyte *mask);

-

-   /* Put/Write values at arbitrary locations.

-    * The values will be of format _BaseFormat and type DataType.

-    */

-   void (*PutValues)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,

-                     const GLint x[], const GLint y[], const void *values,

-                     const GLubyte *mask);

-   /* Put/Write identical values at arbitrary locations.

-    * The values will be of format _BaseFormat and type DataType.

-    */

-   void (*PutMonoValues)(struct gl_context *ctx, struct gl_renderbuffer *rb,

-                         GLuint count, const GLint x[], const GLint y[],

-                         const void *value, const GLubyte *mask);

-};

-

-

-/**

- * A renderbuffer attachment points to either a texture object (and specifies

- * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.

- */

-struct gl_renderbuffer_attachment

-{

-   GLenum Type;  /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */

-   GLboolean Complete;

-

-   /**

-    * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the

-    * application supplied renderbuffer object.

-    */

-   struct gl_renderbuffer *Renderbuffer;

-

-   /**

-    * If \c Type is \c GL_TEXTURE, this stores a pointer to the application

-    * supplied texture object.

-    */

-   struct gl_texture_object *Texture;

-   GLuint TextureLevel; /**< Attached mipmap level. */

-   GLuint CubeMapFace;  /**< 0 .. 5, for cube map textures. */

-   GLuint Zoffset;      /**< Slice for 3D textures,  or layer for both 1D

-                         * and 2D array textures */

-};

-

-

-/**

- * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).

- * In C++ terms, think of this as a base class from which device drivers

- * will make derived classes.

- */

-struct gl_framebuffer

-{

-   _glthread_Mutex Mutex;  /**< for thread safety */

-   /**

-    * If zero, this is a window system framebuffer.  If non-zero, this

-    * is a FBO framebuffer; note that for some devices (i.e. those with

-    * a natural pixel coordinate system for FBOs that differs from the

-    * OpenGL/Mesa coordinate system), this means that the viewport,

-    * polygon face orientation, and polygon stipple will have to be inverted.

-    */

-   GLuint Name;

-

-   GLint RefCount;

-   GLboolean DeletePending;

-

-   /**

-    * The framebuffer's visual. Immutable if this is a window system buffer.

-    * Computed from attachments if user-made FBO.

-    */

-   struct gl_config Visual;

-

-   GLboolean Initialized;

-

-   GLuint Width, Height;	/**< size of frame buffer in pixels */

-

-   /** \name  Drawing bounds (Intersection of buffer size and scissor box) */

-   /*@{*/

-   GLint _Xmin, _Xmax;  /**< inclusive */

-   GLint _Ymin, _Ymax;  /**< exclusive */

-   /*@}*/

-

-   /** \name  Derived Z buffer stuff */

-   /*@{*/

-   GLuint _DepthMax;	/**< Max depth buffer value */

-   GLfloat _DepthMaxF;	/**< Float max depth buffer value */

-   GLfloat _MRD;	/**< minimum resolvable difference in Z values */

-   /*@}*/

-

-   /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */

-   GLenum _Status;

-

-   /** Integer color values */

-   GLboolean _IntegerColor;

-

-   /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */

-   struct gl_renderbuffer_attachment Attachment[BUFFER_COUNT];

-

-   /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER

-    * attribute group and GL_PIXEL attribute group, respectively.

-    */

-   GLenum ColorDrawBuffer[MAX_DRAW_BUFFERS];

-   GLenum ColorReadBuffer;

-

-   /** Computed from ColorDraw/ReadBuffer above */

-   GLuint _NumColorDrawBuffers;

-   GLint _ColorDrawBufferIndexes[MAX_DRAW_BUFFERS]; /**< BUFFER_x or -1 */

-   GLint _ColorReadBufferIndex; /* -1 = None */

-   struct gl_renderbuffer *_ColorDrawBuffers[MAX_DRAW_BUFFERS];

-   struct gl_renderbuffer *_ColorReadBuffer;

-

-   /** The Actual depth/stencil buffers to use.  May be wrappers around the

-    * depth/stencil buffers attached above. */

-   struct gl_renderbuffer *_DepthBuffer;

-   struct gl_renderbuffer *_StencilBuffer;

-

-   /** Delete this framebuffer */

-   void (*Delete)(struct gl_framebuffer *fb);

-};

-

-

-/**

- * Precision info for shader datatypes.  See glGetShaderPrecisionFormat().

- */

-struct gl_precision

-{

-   GLushort RangeMin;   /**< min value exponent */

-   GLushort RangeMax;   /**< max value exponent */

-   GLushort Precision;  /**< number of mantissa bits */

-};

-

-

-/**

- * Limits for vertex and fragment programs/shaders.

- */

-struct gl_program_constants

-{

-   /* logical limits */

-   GLuint MaxInstructions;

-   GLuint MaxAluInstructions;

-   GLuint MaxTexInstructions;

-   GLuint MaxTexIndirections;

-   GLuint MaxAttribs;

-   GLuint MaxTemps;

-   GLuint MaxAddressRegs;

-   GLuint MaxParameters;

-   GLuint MaxLocalParams;

-   GLuint MaxEnvParams;

-   /* native/hardware limits */

-   GLuint MaxNativeInstructions;

-   GLuint MaxNativeAluInstructions;

-   GLuint MaxNativeTexInstructions;

-   GLuint MaxNativeTexIndirections;

-   GLuint MaxNativeAttribs;

-   GLuint MaxNativeTemps;

-   GLuint MaxNativeAddressRegs;

-   GLuint MaxNativeParameters;

-   /* For shaders */

-   GLuint MaxUniformComponents;

-   /* GL_ARB_geometry_shader4 */

-   GLuint MaxGeometryTextureImageUnits;

-   GLuint MaxGeometryVaryingComponents;

-   GLuint MaxVertexVaryingComponents;

-   GLuint MaxGeometryUniformComponents;

-   GLuint MaxGeometryOutputVertices;

-   GLuint MaxGeometryTotalOutputComponents;

-   /* ES 2.0 and GL_ARB_ES2_compatibility */

-   struct gl_precision LowFloat, MediumFloat, HighFloat;

-   struct gl_precision LowInt, MediumInt, HighInt;

-};

-

-

-/**

- * Constants which may be overridden by device driver during context creation

- * but are never changed after that.

- */

-struct gl_constants

-{

-   GLint MaxTextureMbytes;      /**< Max memory per image, in MB */

-   GLint MaxTextureLevels;      /**< Max mipmap levels. */ 

-   GLint Max3DTextureLevels;    /**< Max mipmap levels for 3D textures */

-   GLint MaxCubeTextureLevels;  /**< Max mipmap levels for cube textures */

-   GLint MaxArrayTextureLayers; /**< Max layers in array textures */

-   GLint MaxTextureRectSize;    /**< Max rectangle texture size, in pixes */

-   GLuint MaxTextureCoordUnits;

-   GLuint MaxTextureImageUnits;

-   GLuint MaxVertexTextureImageUnits;

-   GLuint MaxCombinedTextureImageUnits;

-   GLuint MaxTextureUnits;           /**< = MIN(CoordUnits, ImageUnits) */

-   GLfloat MaxTextureMaxAnisotropy;  /**< GL_EXT_texture_filter_anisotropic */

-   GLfloat MaxTextureLodBias;        /**< GL_EXT_texture_lod_bias */

-

-   GLuint MaxArrayLockSize;

-

-   GLint SubPixelBits;

-

-   GLfloat MinPointSize, MaxPointSize;	     /**< aliased */

-   GLfloat MinPointSizeAA, MaxPointSizeAA;   /**< antialiased */

-   GLfloat PointSizeGranularity;

-   GLfloat MinLineWidth, MaxLineWidth;       /**< aliased */

-   GLfloat MinLineWidthAA, MaxLineWidthAA;   /**< antialiased */

-   GLfloat LineWidthGranularity;

-

-   GLuint MaxColorTableSize;

-

-   GLuint MaxClipPlanes;

-   GLuint MaxLights;

-   GLfloat MaxShininess;                     /**< GL_NV_light_max_exponent */

-   GLfloat MaxSpotExponent;                  /**< GL_NV_light_max_exponent */

-

-   GLuint MaxViewportWidth, MaxViewportHeight;

-

-   struct gl_program_constants VertexProgram;   /**< GL_ARB_vertex_program */

-   struct gl_program_constants FragmentProgram; /**< GL_ARB_fragment_program */

-   struct gl_program_constants GeometryProgram;  /**< GL_ARB_geometry_shader4 */

-   GLuint MaxProgramMatrices;

-   GLuint MaxProgramMatrixStackDepth;

-

-   /** vertex array / buffer object bounds checking */

-   GLboolean CheckArrayBounds;

-

-   GLuint MaxDrawBuffers;    /**< GL_ARB_draw_buffers */

-

-   GLuint MaxColorAttachments;   /**< GL_EXT_framebuffer_object */

-   GLuint MaxRenderbufferSize;   /**< GL_EXT_framebuffer_object */

-   GLuint MaxSamples;            /**< GL_ARB_framebuffer_object */

-

-   GLuint MaxVarying;  /**< Number of float[4] varying parameters */

-

-   GLuint GLSLVersion;  /**< GLSL version supported (ex: 120 = 1.20) */

-

-   /** Which texture units support GL_ATI_envmap_bumpmap as targets */

-   GLbitfield SupportedBumpUnits;

-

-   /**

-    * Maximum amount of time, measured in nanseconds, that the server can wait.

-    */

-   GLuint64 MaxServerWaitTimeout;

-

-   /** GL_EXT_provoking_vertex */

-   GLboolean QuadsFollowProvokingVertexConvention;

-

-   /** OpenGL version 3.0 */

-   GLbitfield ContextFlags;  /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */

-

-   /** OpenGL version 3.2 */

-   GLbitfield ProfileMask;   /**< Mask of CONTEXT_x_PROFILE_BIT */

-

-   /** GL_EXT_transform_feedback */

-   GLuint MaxTransformFeedbackSeparateAttribs;

-   GLuint MaxTransformFeedbackSeparateComponents;

-   GLuint MaxTransformFeedbackInterleavedComponents;

-

-   /** GL_EXT_gpu_shader4 */

-   GLint MinProgramTexelOffset, MaxProgramTexelOffset;

-

-   /* GL_EXT_framebuffer_sRGB */

-   GLboolean sRGBCapable; /* can enable sRGB blend/update on FBOs */

-};

-

-

-/**

- * Enable flag for each OpenGL extension.  Different device drivers will

- * enable different extensions at runtime.

- */

-struct gl_extensions

-{

-   GLboolean dummy;  /* don't remove this! */

-   GLboolean dummy_true;  /* Set true by _mesa_init_extensions(). */

-   GLboolean dummy_false; /* Set false by _mesa_init_extensions(). */

-   GLboolean ARB_ES2_compatibility;

-   GLboolean ARB_blend_func_extended;

-   GLboolean ARB_copy_buffer;

-   GLboolean ARB_depth_buffer_float;

-   GLboolean ARB_depth_clamp;

-   GLboolean ARB_depth_texture;

-   GLboolean ARB_draw_buffers;

-   GLboolean ARB_draw_buffers_blend;

-   GLboolean ARB_draw_elements_base_vertex;

-   GLboolean ARB_draw_instanced;

-   GLboolean ARB_fragment_coord_conventions;

-   GLboolean ARB_fragment_program;

-   GLboolean ARB_fragment_program_shadow;

-   GLboolean ARB_fragment_shader;

-   GLboolean ARB_framebuffer_object;

-   GLboolean ARB_explicit_attrib_location;

-   GLboolean ARB_geometry_shader4;

-   GLboolean ARB_half_float_pixel;

-   GLboolean ARB_half_float_vertex;

-   GLboolean ARB_instanced_arrays;

-   GLboolean ARB_map_buffer_range;

-   GLboolean ARB_multisample;

-   GLboolean ARB_multitexture;

-   GLboolean ARB_occlusion_query;

-   GLboolean ARB_occlusion_query2;

-   GLboolean ARB_point_sprite;

-   GLboolean ARB_sampler_objects;

-   GLboolean ARB_seamless_cube_map;

-   GLboolean ARB_shader_objects;

-   GLboolean ARB_shader_stencil_export;

-   GLboolean ARB_shading_language_100;

-   GLboolean ARB_shadow;

-   GLboolean ARB_shadow_ambient;

-   GLboolean ARB_sync;

-   GLboolean ARB_texture_border_clamp;

-   GLboolean ARB_texture_buffer_object;

-   GLboolean ARB_texture_compression;

-   GLboolean ARB_texture_compression_rgtc;

-   GLboolean ARB_texture_cube_map;

-   GLboolean ARB_texture_env_combine;

-   GLboolean ARB_texture_env_crossbar;

-   GLboolean ARB_texture_env_dot3;

-   GLboolean ARB_texture_float;

-   GLboolean ARB_texture_mirrored_repeat;

-   GLboolean ARB_texture_multisample;

-   GLboolean ARB_texture_non_power_of_two;

-   GLboolean ARB_texture_rg;

-   GLboolean ARB_texture_rgb10_a2ui;

-   GLboolean ARB_timer_query;

-   GLboolean ARB_transform_feedback2;

-   GLboolean ARB_transpose_matrix;

-   GLboolean ARB_uniform_buffer_object;

-   GLboolean ARB_vertex_array_object;

-   GLboolean ARB_vertex_buffer_object;

-   GLboolean ARB_vertex_program;

-   GLboolean ARB_vertex_shader;

-   GLboolean ARB_vertex_type_2_10_10_10_rev;

-   GLboolean ARB_window_pos;

-   GLboolean EXT_abgr;

-   GLboolean EXT_bgra;

-   GLboolean EXT_blend_color;

-   GLboolean EXT_blend_equation_separate;

-   GLboolean EXT_blend_func_separate;

-   GLboolean EXT_blend_logic_op;

-   GLboolean EXT_blend_minmax;

-   GLboolean EXT_blend_subtract;

-   GLboolean EXT_clip_volume_hint;

-   GLboolean EXT_compiled_vertex_array;

-   GLboolean EXT_copy_texture;

-   GLboolean EXT_depth_bounds_test;

-   GLboolean EXT_draw_buffers2;

-   GLboolean EXT_draw_range_elements;

-   GLboolean EXT_fog_coord;

-   GLboolean EXT_framebuffer_blit;

-   GLboolean EXT_framebuffer_multisample;

-   GLboolean EXT_framebuffer_object;

-   GLboolean EXT_framebuffer_sRGB;

-   GLboolean EXT_gpu_program_parameters;

-   GLboolean EXT_gpu_shader4;

-   GLboolean EXT_multi_draw_arrays;

-   GLboolean EXT_paletted_texture;

-   GLboolean EXT_packed_depth_stencil;

-   GLboolean EXT_packed_float;

-   GLboolean EXT_packed_pixels;

-   GLboolean EXT_pixel_buffer_object;

-   GLboolean EXT_point_parameters;

-   GLboolean EXT_polygon_offset;

-   GLboolean EXT_provoking_vertex;

-   GLboolean EXT_rescale_normal;

-   GLboolean EXT_shadow_funcs;

-   GLboolean EXT_secondary_color;

-   GLboolean EXT_separate_shader_objects;

-   GLboolean EXT_separate_specular_color;

-   GLboolean EXT_shared_texture_palette;

-   GLboolean EXT_stencil_wrap;

-   GLboolean EXT_stencil_two_side;

-   GLboolean EXT_subtexture;

-   GLboolean EXT_texture;

-   GLboolean EXT_texture_object;

-   GLboolean EXT_texture3D;

-   GLboolean EXT_texture_array;

-   GLboolean EXT_texture_compression_s3tc;

-   GLboolean EXT_texture_env_add;

-   GLboolean EXT_texture_env_combine;

-   GLboolean EXT_texture_env_dot3;

-   GLboolean EXT_texture_filter_anisotropic;

-   GLboolean EXT_texture_integer;

-   GLboolean EXT_texture_lod_bias;

-   GLboolean EXT_texture_mirror_clamp;

-   GLboolean EXT_texture_shared_exponent;

-   GLboolean EXT_texture_sRGB;

-   GLboolean EXT_texture_sRGB_decode;

-   GLboolean EXT_texture_swizzle;

-   GLboolean EXT_transform_feedback;

-   GLboolean EXT_timer_query;

-   GLboolean EXT_vertex_array;

-   GLboolean EXT_vertex_array_bgra;

-   GLboolean EXT_vertex_array_set;

-   GLboolean OES_standard_derivatives;

-   /* vendor extensions */

-   GLboolean AMD_conservative_depth;

-   GLboolean APPLE_client_storage;

-   GLboolean APPLE_packed_pixels;

-   GLboolean APPLE_vertex_array_object;

-   GLboolean APPLE_object_purgeable;

-   GLboolean ATI_envmap_bumpmap;

-   GLboolean ATI_texture_mirror_once;

-   GLboolean ATI_texture_env_combine3;

-   GLboolean ATI_fragment_shader;

-   GLboolean ATI_separate_stencil;

-   GLboolean IBM_rasterpos_clip;

-   GLboolean IBM_multimode_draw_arrays;

-   GLboolean MESA_pack_invert;

-   GLboolean MESA_resize_buffers;

-   GLboolean MESA_ycbcr_texture;

-   GLboolean MESA_texture_array;

-   GLboolean MESA_texture_signed_rgba;

-   GLboolean NV_blend_square;

-   GLboolean NV_conditional_render;

-   GLboolean NV_fragment_program;

-   GLboolean NV_fragment_program_option;

-   GLboolean NV_light_max_exponent;

-   GLboolean NV_point_sprite;

-   GLboolean NV_primitive_restart;

-   GLboolean NV_texgen_reflection;

-   GLboolean NV_texture_env_combine4;

-   GLboolean NV_texture_rectangle;

-   GLboolean NV_vertex_program;

-   GLboolean NV_vertex_program1_1;

-   GLboolean OES_read_format;

-   GLboolean SGI_texture_color_table;

-   GLboolean SGIS_generate_mipmap;

-   GLboolean SGIS_texture_edge_clamp;

-   GLboolean SGIS_texture_lod;

-   GLboolean TDFX_texture_compression_FXT1;

-   GLboolean S3_s3tc;

-   GLboolean OES_EGL_image;

-   GLboolean OES_draw_texture;

-   GLboolean EXT_texture_format_BGRA8888;

-   GLboolean extension_sentinel;

-   /** The extension string */

-   const GLubyte *String;

-   /** Number of supported extensions */

-   GLuint Count;

-};

-

-

-/**

- * A stack of matrices (projection, modelview, color, texture, etc).

- */

-struct gl_matrix_stack

-{

-   GLmatrix *Top;      /**< points into Stack */

-   GLmatrix *Stack;    /**< array [MaxDepth] of GLmatrix */

-   GLuint Depth;       /**< 0 <= Depth < MaxDepth */

-   GLuint MaxDepth;    /**< size of Stack[] array */

-   GLuint DirtyFlag;   /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */

-};

-

-

-/**

- * \name Bits for image transfer operations 

- * \sa __struct gl_contextRec::ImageTransferState.

- */

-/*@{*/

-#define IMAGE_SCALE_BIAS_BIT                      0x1

-#define IMAGE_SHIFT_OFFSET_BIT                    0x2

-#define IMAGE_MAP_COLOR_BIT                       0x4

-#define IMAGE_CLAMP_BIT                           0x800

-

-

-/** Pixel Transfer ops */

-#define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT |			\

-		    IMAGE_SHIFT_OFFSET_BIT |			\

-		    IMAGE_MAP_COLOR_BIT)

-

-/**

- * \name Bits to indicate what state has changed.  

- */

-/*@{*/

-#define _NEW_MODELVIEW         (1 << 0)   /**< gl_context::ModelView */

-#define _NEW_PROJECTION        (1 << 1)   /**< gl_context::Projection */

-#define _NEW_TEXTURE_MATRIX    (1 << 2)   /**< gl_context::TextureMatrix */

-#define _NEW_COLOR             (1 << 3)   /**< gl_context::Color */

-#define _NEW_DEPTH             (1 << 4)   /**< gl_context::Depth */

-#define _NEW_EVAL              (1 << 5)   /**< gl_context::Eval, EvalMap */

-#define _NEW_FOG               (1 << 6)   /**< gl_context::Fog */

-#define _NEW_HINT              (1 << 7)   /**< gl_context::Hint */

-#define _NEW_LIGHT             (1 << 8)   /**< gl_context::Light */

-#define _NEW_LINE              (1 << 9)   /**< gl_context::Line */

-#define _NEW_PIXEL             (1 << 10)  /**< gl_context::Pixel */

-#define _NEW_POINT             (1 << 11)  /**< gl_context::Point */

-#define _NEW_POLYGON           (1 << 12)  /**< gl_context::Polygon */

-#define _NEW_POLYGONSTIPPLE    (1 << 13)  /**< gl_context::PolygonStipple */

-#define _NEW_SCISSOR           (1 << 14)  /**< gl_context::Scissor */

-#define _NEW_STENCIL           (1 << 15)  /**< gl_context::Stencil */

-#define _NEW_TEXTURE           (1 << 16)  /**< gl_context::Texture */

-#define _NEW_TRANSFORM         (1 << 17)  /**< gl_context::Transform */

-#define _NEW_VIEWPORT          (1 << 18)  /**< gl_context::Viewport */

-#define _NEW_PACKUNPACK        (1 << 19)  /**< gl_context::Pack, Unpack */

-#define _NEW_ARRAY             (1 << 20)  /**< gl_context::Array */

-#define _NEW_RENDERMODE        (1 << 21)  /**< gl_context::RenderMode, etc */

-#define _NEW_BUFFERS           (1 << 22)  /**< gl_context::Visual, DrawBuffer, */

-#define _NEW_CURRENT_ATTRIB    (1 << 23)  /**< gl_context::Current */

-#define _NEW_MULTISAMPLE       (1 << 24)  /**< gl_context::Multisample */

-#define _NEW_TRACK_MATRIX      (1 << 25)  /**< gl_context::VertexProgram */

-#define _NEW_PROGRAM           (1 << 26)  /**< New program/shader state */

-#define _NEW_PROGRAM_CONSTANTS (1 << 27)

-#define _NEW_BUFFER_OBJECT     (1 << 28)

-#define _NEW_ALL ~0

-/*@}*/

-

-

-/**

- * \name Bits to track array state changes 

- *

- * Also used to summarize array enabled.

- */

-/*@{*/

-#define _NEW_ARRAY_VERTEX           VERT_BIT_POS

-#define _NEW_ARRAY_WEIGHT           VERT_BIT_WEIGHT

-#define _NEW_ARRAY_NORMAL           VERT_BIT_NORMAL

-#define _NEW_ARRAY_COLOR0           VERT_BIT_COLOR0

-#define _NEW_ARRAY_COLOR1           VERT_BIT_COLOR1

-#define _NEW_ARRAY_FOGCOORD         VERT_BIT_FOG

-#define _NEW_ARRAY_INDEX            VERT_BIT_COLOR_INDEX

-#define _NEW_ARRAY_EDGEFLAG         VERT_BIT_EDGEFLAG

-#define _NEW_ARRAY_POINT_SIZE       VERT_BIT_COLOR_INDEX  /* aliased */

-#define _NEW_ARRAY_TEXCOORD_0       VERT_BIT_TEX0

-#define _NEW_ARRAY_TEXCOORD_1       VERT_BIT_TEX1

-#define _NEW_ARRAY_TEXCOORD_2       VERT_BIT_TEX2

-#define _NEW_ARRAY_TEXCOORD_3       VERT_BIT_TEX3

-#define _NEW_ARRAY_TEXCOORD_4       VERT_BIT_TEX4

-#define _NEW_ARRAY_TEXCOORD_5       VERT_BIT_TEX5

-#define _NEW_ARRAY_TEXCOORD_6       VERT_BIT_TEX6

-#define _NEW_ARRAY_TEXCOORD_7       VERT_BIT_TEX7

-#define _NEW_ARRAY_ATTRIB_0         VERT_BIT_GENERIC0  /* start at bit 16 */

-#define _NEW_ARRAY_ALL              0xffffffff

-

-

-#define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))

-#define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))

-/*@}*/

-

-

-

-/**

- * \name A bunch of flags that we think might be useful to drivers.

- * 

- * Set in the __struct gl_contextRec::_TriangleCaps bitfield.

- */

-/*@{*/

-#define DD_FLATSHADE                0x1

-#define DD_SEPARATE_SPECULAR        0x2

-#define DD_TRI_CULL_FRONT_BACK      0x4 /* special case on some hw */

-#define DD_TRI_LIGHT_TWOSIDE        0x8

-#define DD_TRI_UNFILLED             0x10

-#define DD_TRI_SMOOTH               0x20

-#define DD_TRI_STIPPLE              0x40

-#define DD_TRI_OFFSET               0x80

-#define DD_LINE_SMOOTH              0x100

-#define DD_LINE_STIPPLE             0x200

-#define DD_POINT_SMOOTH             0x400

-#define DD_POINT_ATTEN              0x800

-#define DD_TRI_TWOSTENCIL           0x1000

-/*@}*/

-

-

-/**

- * \name Define the state changes under which each of these bits might change

- */

-/*@{*/

-#define _DD_NEW_FLATSHADE                _NEW_LIGHT

-#define _DD_NEW_SEPARATE_SPECULAR        (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)

-#define _DD_NEW_TRI_CULL_FRONT_BACK      _NEW_POLYGON

-#define _DD_NEW_TRI_LIGHT_TWOSIDE        _NEW_LIGHT

-#define _DD_NEW_TRI_UNFILLED             _NEW_POLYGON

-#define _DD_NEW_TRI_SMOOTH               _NEW_POLYGON

-#define _DD_NEW_TRI_STIPPLE              _NEW_POLYGON

-#define _DD_NEW_TRI_OFFSET               _NEW_POLYGON

-#define _DD_NEW_LINE_SMOOTH              _NEW_LINE

-#define _DD_NEW_LINE_STIPPLE             _NEW_LINE

-#define _DD_NEW_LINE_WIDTH               _NEW_LINE

-#define _DD_NEW_POINT_SMOOTH             _NEW_POINT

-#define _DD_NEW_POINT_SIZE               _NEW_POINT

-#define _DD_NEW_POINT_ATTEN              _NEW_POINT

-/*@}*/

-

-

-/**

- * Composite state flags

- */

-/*@{*/

-#define _MESA_NEW_NEED_EYE_COORDS         (_NEW_LIGHT |		\

-                                           _NEW_TEXTURE |	\

-                                           _NEW_POINT |		\

-                                           _NEW_PROGRAM |	\

-                                           _NEW_MODELVIEW)

-

-#define _MESA_NEW_NEED_NORMALS            (_NEW_LIGHT |		\

-                                           _NEW_TEXTURE)

-

-#define _MESA_NEW_TRANSFER_STATE          (_NEW_PIXEL)

-/*@}*/

-

-

-

-

-/* This has to be included here. */

-#include "dd.h"

-

-

-/**

- * Display list flags.

- * Strictly this is a tnl-private concept, but it doesn't seem

- * worthwhile adding a tnl private structure just to hold this one bit

- * of information:

- */

-#define DLIST_DANGLING_REFS     0x1 

-

-

-/** Opaque declaration of display list payload data type */

-union gl_dlist_node;

-

-

-/**

- * Provide a location where information about a display list can be

- * collected.  Could be extended with driverPrivate structures,

- * etc. in the future.

- */

-struct gl_display_list

-{

-   GLuint Name;

-   GLbitfield Flags;  /**< DLIST_x flags */

-   /** The dlist commands are in a linked list of nodes */

-   union gl_dlist_node *Head;

-};

-

-

-/**

- * State used during display list compilation and execution.

- */

-struct gl_dlist_state

-{

-   GLuint CallDepth;		/**< Current recursion calling depth */

-

-   struct gl_display_list *CurrentList; /**< List currently being compiled */

-   union gl_dlist_node *CurrentBlock; /**< Pointer to current block of nodes */

-   GLuint CurrentPos;		/**< Index into current block of nodes */

-

-   GLvertexformat ListVtxfmt;

-

-   GLubyte ActiveAttribSize[VERT_ATTRIB_MAX];

-   GLfloat CurrentAttrib[VERT_ATTRIB_MAX][4];

-   

-   GLubyte ActiveMaterialSize[MAT_ATTRIB_MAX];

-   GLfloat CurrentMaterial[MAT_ATTRIB_MAX][4];

-

-   GLubyte ActiveIndex;

-   GLfloat CurrentIndex;

-   

-   GLubyte ActiveEdgeFlag;

-   GLboolean CurrentEdgeFlag;

-

-   struct {

-      /* State known to have been set by the currently-compiling display

-       * list.  Used to eliminate some redundant state changes.

-       */

-      GLenum ShadeModel;

-   } Current;

-};

-

-

-/**

- * Enum for the OpenGL APIs we know about and may support.

- */

-typedef enum

-{

-   API_OPENGL,

-   API_OPENGLES,

-   API_OPENGLES2

-} gl_api;

-

-

-/**

- * Mesa rendering context.

- *

- * This is the central context data structure for Mesa.  Almost all

- * OpenGL state is contained in this structure.

- * Think of this as a base class from which device drivers will derive

- * sub classes.

- *

- * The struct gl_context typedef names this structure.

- */

-struct gl_context

-{

-   /** State possibly shared with other contexts in the address space */

-   struct gl_shared_state *Shared;

-

-   /** \name API function pointer tables */

-   /*@{*/

-   gl_api API;

-   struct _glapi_table *Save;	/**< Display list save functions */

-   struct _glapi_table *Exec;	/**< Execute functions */

-   struct _glapi_table *CurrentDispatch;  /**< == Save or Exec !! */

-   /*@}*/

-

-   struct gl_config Visual;

-   struct gl_framebuffer *DrawBuffer;	/**< buffer for writing */

-   struct gl_framebuffer *ReadBuffer;	/**< buffer for reading */

-   struct gl_framebuffer *WinSysDrawBuffer;  /**< set with MakeCurrent */

-   struct gl_framebuffer *WinSysReadBuffer;  /**< set with MakeCurrent */

-

-   /**

-    * Device driver function pointer table

-    */

-   struct dd_function_table Driver;

-

-   void *DriverCtx;	/**< Points to device driver context/state */

-

-   /** Core/Driver constants */

-   struct gl_constants Const;

-

-   /** \name The various 4x4 matrix stacks */

-   /*@{*/

-   struct gl_matrix_stack ModelviewMatrixStack;

-   struct gl_matrix_stack ProjectionMatrixStack;

-   struct gl_matrix_stack TextureMatrixStack[MAX_TEXTURE_UNITS];

-   struct gl_matrix_stack ProgramMatrixStack[MAX_PROGRAM_MATRICES];

-   struct gl_matrix_stack *CurrentStack; /**< Points to one of the above stacks */

-   /*@}*/

-

-   /** Combined modelview and projection matrix */

-   GLmatrix _ModelProjectMatrix;

-

-   /** \name Display lists */

-   struct gl_dlist_state ListState;

-

-   GLboolean ExecuteFlag;	/**< Execute GL commands? */

-   GLboolean CompileFlag;	/**< Compile GL commands into display list? */

-

-   /** Extension information */

-   struct gl_extensions Extensions;

-

-   /** Version info */

-   GLuint VersionMajor, VersionMinor;

-   char *VersionString;

-

-   /** \name State attribute stack (for glPush/PopAttrib) */

-   /*@{*/

-   GLuint AttribStackDepth;

-   struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];

-   /*@}*/

-

-   /** \name Renderer attribute groups

-    * 

-    * We define a struct for each attribute group to make pushing and popping

-    * attributes easy.  Also it's a good organization.

-    */

-   /*@{*/

-   struct gl_accum_attrib	Accum;		/**< Accum buffer attributes */

-   struct gl_colorbuffer_attrib	Color;		/**< Color buffer attributes */

-   struct gl_current_attrib	Current;	/**< Current attributes */

-   struct gl_depthbuffer_attrib	Depth;		/**< Depth buffer attributes */

-   struct gl_eval_attrib	Eval;		/**< Eval attributes */

-   struct gl_fog_attrib		Fog;		/**< Fog attributes */

-   struct gl_hint_attrib	Hint;		/**< Hint attributes */

-   struct gl_light_attrib	Light;		/**< Light attributes */

-   struct gl_line_attrib	Line;		/**< Line attributes */

-   struct gl_list_attrib	List;		/**< List attributes */

-   struct gl_multisample_attrib Multisample;

-   struct gl_pixel_attrib	Pixel;		/**< Pixel attributes */

-   struct gl_point_attrib	Point;		/**< Point attributes */

-   struct gl_polygon_attrib	Polygon;	/**< Polygon attributes */

-   GLuint PolygonStipple[32];			/**< Polygon stipple */

-   struct gl_scissor_attrib	Scissor;	/**< Scissor attributes */

-   struct gl_stencil_attrib	Stencil;	/**< Stencil buffer attributes */

-   struct gl_texture_attrib	Texture;	/**< Texture attributes */

-   struct gl_transform_attrib	Transform;	/**< Transformation attributes */

-   struct gl_viewport_attrib	Viewport;	/**< Viewport attributes */

-   /*@}*/

-

-   /** \name Client attribute stack */

-   /*@{*/

-   GLuint ClientAttribStackDepth;

-   struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];

-   /*@}*/

-

-   /** \name Client attribute groups */

-   /*@{*/

-   struct gl_array_attrib	Array;	/**< Vertex arrays */

-   struct gl_pixelstore_attrib	Pack;	/**< Pixel packing */

-   struct gl_pixelstore_attrib	Unpack;	/**< Pixel unpacking */

-   struct gl_pixelstore_attrib	DefaultPacking;	/**< Default params */

-   /*@}*/

-

-   /** \name Other assorted state (not pushed/popped on attribute stack) */

-   /*@{*/

-   struct gl_pixelmaps          PixelMaps;

-

-   struct gl_evaluators EvalMap;   /**< All evaluators */

-   struct gl_feedback   Feedback;  /**< Feedback */

-   struct gl_selection  Select;    /**< Selection */

-

-   struct gl_program_state Program;  /**< general program state */

-   struct gl_vertex_program_state VertexProgram;

-   struct gl_fragment_program_state FragmentProgram;

-   struct gl_geometry_program_state GeometryProgram;

-   struct gl_ati_fragment_shader_state ATIFragmentShader;

-

-   struct gl_shader_state Shader; /**< GLSL shader object state */

-   struct gl_shader_compiler_options ShaderCompilerOptions[MESA_SHADER_TYPES];

-

-   struct gl_query_state Query;  /**< occlusion, timer queries */

-

-   struct gl_transform_feedback TransformFeedback;

-

-   struct gl_buffer_object *CopyReadBuffer; /**< GL_ARB_copy_buffer */

-   struct gl_buffer_object *CopyWriteBuffer; /**< GL_ARB_copy_buffer */

-   /*@}*/

-

-   struct gl_meta_state *Meta;  /**< for "meta" operations */

-

-   /* GL_EXT_framebuffer_object */

-   struct gl_renderbuffer *CurrentRenderbuffer;

-

-   GLenum ErrorValue;        /**< Last error code */

-

-   /**

-    * Recognize and silence repeated error debug messages in buggy apps.

-    */

-   const char *ErrorDebugFmtString;

-   GLuint ErrorDebugCount;

-

-   GLenum RenderMode;        /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */

-   GLbitfield NewState;      /**< bitwise-or of _NEW_* flags */

-

-   GLboolean ViewportInitialized;  /**< has viewport size been initialized? */

-

-   GLbitfield varying_vp_inputs;  /**< mask of VERT_BIT_* flags */

-

-   /** \name Derived state */

-   /*@{*/

-   /** Bitwise-or of DD_* flags.  Note that this bitfield may be used before

-    * state validation so they need to always be current.

-    */

-   GLbitfield _TriangleCaps;

-   GLbitfield _ImageTransferState;/**< bitwise-or of IMAGE_*_BIT flags */

-   GLfloat _EyeZDir[3];

-   GLfloat _ModelViewInvScale;

-   GLboolean _NeedEyeCoords;

-   GLboolean _ForceEyeCoords; 

-

-   GLuint TextureStateTimestamp; /**< detect changes to shared state */

-

-   struct gl_shine_tab *_ShineTable[2]; /**< Active shine tables */

-   struct gl_shine_tab *_ShineTabList;  /**< MRU list of inactive shine tables */

-   /**@}*/

-

-   struct gl_list_extensions *ListExt; /**< driver dlist extensions */

-

-   /** \name For debugging/development only */

-   /*@{*/

-   GLboolean FirstTimeCurrent;

-   /*@}*/

-

-   /** software compression/decompression supported or not */

-   GLboolean Mesa_DXTn;

-

-   GLboolean TextureFormatSupported[MESA_FORMAT_COUNT];

-

-   /** 

-    * Use dp4 (rather than mul/mad) instructions for position

-    * transformation?

-    */

-   GLboolean mvp_with_dp4;

-

-   /**

-    * \name Hooks for module contexts.  

-    *

-    * These will eventually live in the driver or elsewhere.

-    */

-   /*@{*/

-   void *swrast_context;

-   void *swsetup_context;

-   void *swtnl_context;

-   void *swtnl_im;

-   struct st_context *st;

-   void *aelt_context;

-   /*@}*/

-};

-

-

-#ifdef DEBUG

-extern int MESA_VERBOSE;

-extern int MESA_DEBUG_FLAGS;

-# define MESA_FUNCTION __FUNCTION__

-#else

-# define MESA_VERBOSE 0

-# define MESA_DEBUG_FLAGS 0

-# define MESA_FUNCTION "a function"

-# ifndef NDEBUG

-#  define NDEBUG

-# endif

-#endif

-

-

-/** The MESA_VERBOSE var is a bitmask of these flags */

-enum _verbose

-{

-   VERBOSE_VARRAY		= 0x0001,

-   VERBOSE_TEXTURE		= 0x0002,

-   VERBOSE_MATERIAL		= 0x0004,

-   VERBOSE_PIPELINE		= 0x0008,

-   VERBOSE_DRIVER		= 0x0010,

-   VERBOSE_STATE		= 0x0020,

-   VERBOSE_API			= 0x0040,

-   VERBOSE_DISPLAY_LIST		= 0x0100,

-   VERBOSE_LIGHTING		= 0x0200,

-   VERBOSE_PRIMS		= 0x0400,

-   VERBOSE_VERTS		= 0x0800,

-   VERBOSE_DISASSEM		= 0x1000,

-   VERBOSE_DRAW                 = 0x2000,

-   VERBOSE_SWAPBUFFERS          = 0x4000

-};

-

-

-/** The MESA_DEBUG_FLAGS var is a bitmask of these flags */

-enum _debug

-{

-   DEBUG_ALWAYS_FLUSH		= 0x1

-};

-

-

-

-#endif /* MTYPES_H */

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.7
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file mtypes.h
+ * Main Mesa data structures.
+ *
+ * Please try to mark derived values with a leading underscore ('_').
+ */
+
+#ifndef MTYPES_H
+#define MTYPES_H
+
+
+#include "main/glheader.h"
+#include "main/config.h"
+#include "main/mfeatures.h"
+#include "glapi/glapi.h"
+#include "math/m_matrix.h"	/* GLmatrix */
+#include "main/simple_list.h"	/* struct simple_node */
+#include "main/formats.h"       /* MESA_FORMAT_COUNT */
+
+
+/**
+ * Color channel data type.
+ */
+#if CHAN_BITS == 8
+   typedef GLubyte GLchan;
+#define CHAN_MAX 255
+#define CHAN_MAXF 255.0F
+#define CHAN_TYPE GL_UNSIGNED_BYTE
+#elif CHAN_BITS == 16
+   typedef GLushort GLchan;
+#define CHAN_MAX 65535
+#define CHAN_MAXF 65535.0F
+#define CHAN_TYPE GL_UNSIGNED_SHORT
+#elif CHAN_BITS == 32
+   typedef GLfloat GLchan;
+#define CHAN_MAX 1.0
+#define CHAN_MAXF 1.0F
+#define CHAN_TYPE GL_FLOAT
+#else
+#error "illegal number of color channel bits"
+#endif
+
+
+/**
+ * Stencil buffer data type.
+ */
+#if STENCIL_BITS==8
+   typedef GLubyte GLstencil;
+#elif STENCIL_BITS==16
+   typedef GLushort GLstencil;
+#else
+#  error "illegal number of stencil bits"
+#endif
+
+
+/**
+ * \name 64-bit extension of GLbitfield.
+ */
+/*@{*/
+typedef GLuint64 GLbitfield64;
+
+/** Set a single bit */
+#define BITFIELD64_BIT(b)      (1ULL << (b))
+
+
+/**
+ * \name Some forward type declarations
+ */
+/*@{*/
+struct _mesa_HashTable;
+struct gl_attrib_node;
+struct gl_list_extensions;
+struct gl_meta_state;
+struct gl_pixelstore_attrib;
+struct gl_program_cache;
+struct gl_texture_format;
+struct gl_texture_image;
+struct gl_texture_object;
+struct gl_context;
+struct st_context;
+/*@}*/
+
+
+/** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
+#define PRIM_OUTSIDE_BEGIN_END   (GL_POLYGON+1)
+#define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
+#define PRIM_UNKNOWN             (GL_POLYGON+3)
+
+
+/**
+ * Shader stages. Note that these will become 5 with tessellation.
+ * These MUST have the same values as gallium's PIPE_SHADER_*
+ */
+typedef enum
+{
+   MESA_SHADER_VERTEX = 0,
+   MESA_SHADER_FRAGMENT = 1,
+   MESA_SHADER_GEOMETRY = 2,
+   MESA_SHADER_TYPES = 3
+} gl_shader_type;
+
+
+
+/**
+ * Indexes for vertex program attributes.
+ * GL_NV_vertex_program aliases generic attributes over the conventional
+ * attributes.  In GL_ARB_vertex_program shader the aliasing is optional.
+ * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
+ * generic attributes are distinct/separate).
+ */
+typedef enum
+{
+   VERT_ATTRIB_POS = 0,
+   VERT_ATTRIB_WEIGHT = 1,
+   VERT_ATTRIB_NORMAL = 2,
+   VERT_ATTRIB_COLOR0 = 3,
+   VERT_ATTRIB_COLOR1 = 4,
+   VERT_ATTRIB_FOG = 5,
+   VERT_ATTRIB_COLOR_INDEX = 6,
+   VERT_ATTRIB_POINT_SIZE = 6,  /*alias*/
+   VERT_ATTRIB_EDGEFLAG = 7,
+   VERT_ATTRIB_TEX0 = 8,
+   VERT_ATTRIB_TEX1 = 9,
+   VERT_ATTRIB_TEX2 = 10,
+   VERT_ATTRIB_TEX3 = 11,
+   VERT_ATTRIB_TEX4 = 12,
+   VERT_ATTRIB_TEX5 = 13,
+   VERT_ATTRIB_TEX6 = 14,
+   VERT_ATTRIB_TEX7 = 15,
+   VERT_ATTRIB_GENERIC0 = 16,
+   VERT_ATTRIB_GENERIC1 = 17,
+   VERT_ATTRIB_GENERIC2 = 18,
+   VERT_ATTRIB_GENERIC3 = 19,
+   VERT_ATTRIB_GENERIC4 = 20,
+   VERT_ATTRIB_GENERIC5 = 21,
+   VERT_ATTRIB_GENERIC6 = 22,
+   VERT_ATTRIB_GENERIC7 = 23,
+   VERT_ATTRIB_GENERIC8 = 24,
+   VERT_ATTRIB_GENERIC9 = 25,
+   VERT_ATTRIB_GENERIC10 = 26,
+   VERT_ATTRIB_GENERIC11 = 27,
+   VERT_ATTRIB_GENERIC12 = 28,
+   VERT_ATTRIB_GENERIC13 = 29,
+   VERT_ATTRIB_GENERIC14 = 30,
+   VERT_ATTRIB_GENERIC15 = 31,
+   VERT_ATTRIB_MAX = 32
+} gl_vert_attrib;
+
+/**
+ * Bitflags for vertex attributes.
+ * These are used in bitfields in many places.
+ */
+/*@{*/
+#define VERT_BIT_POS         (1 << VERT_ATTRIB_POS)
+#define VERT_BIT_WEIGHT      (1 << VERT_ATTRIB_WEIGHT)
+#define VERT_BIT_NORMAL      (1 << VERT_ATTRIB_NORMAL)
+#define VERT_BIT_COLOR0      (1 << VERT_ATTRIB_COLOR0)
+#define VERT_BIT_COLOR1      (1 << VERT_ATTRIB_COLOR1)
+#define VERT_BIT_FOG         (1 << VERT_ATTRIB_FOG)
+#define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
+#define VERT_BIT_EDGEFLAG    (1 << VERT_ATTRIB_EDGEFLAG)
+#define VERT_BIT_TEX0        (1 << VERT_ATTRIB_TEX0)
+#define VERT_BIT_TEX1        (1 << VERT_ATTRIB_TEX1)
+#define VERT_BIT_TEX2        (1 << VERT_ATTRIB_TEX2)
+#define VERT_BIT_TEX3        (1 << VERT_ATTRIB_TEX3)
+#define VERT_BIT_TEX4        (1 << VERT_ATTRIB_TEX4)
+#define VERT_BIT_TEX5        (1 << VERT_ATTRIB_TEX5)
+#define VERT_BIT_TEX6        (1 << VERT_ATTRIB_TEX6)
+#define VERT_BIT_TEX7        (1 << VERT_ATTRIB_TEX7)
+#define VERT_BIT_GENERIC0    (1 << VERT_ATTRIB_GENERIC0)
+#define VERT_BIT_GENERIC1    (1 << VERT_ATTRIB_GENERIC1)
+#define VERT_BIT_GENERIC2    (1 << VERT_ATTRIB_GENERIC2)
+#define VERT_BIT_GENERIC3    (1 << VERT_ATTRIB_GENERIC3)
+#define VERT_BIT_GENERIC4    (1 << VERT_ATTRIB_GENERIC4)
+#define VERT_BIT_GENERIC5    (1 << VERT_ATTRIB_GENERIC5)
+#define VERT_BIT_GENERIC6    (1 << VERT_ATTRIB_GENERIC6)
+#define VERT_BIT_GENERIC7    (1 << VERT_ATTRIB_GENERIC7)
+#define VERT_BIT_GENERIC8    (1 << VERT_ATTRIB_GENERIC8)
+#define VERT_BIT_GENERIC9    (1 << VERT_ATTRIB_GENERIC9)
+#define VERT_BIT_GENERIC10   (1 << VERT_ATTRIB_GENERIC10)
+#define VERT_BIT_GENERIC11   (1 << VERT_ATTRIB_GENERIC11)
+#define VERT_BIT_GENERIC12   (1 << VERT_ATTRIB_GENERIC12)
+#define VERT_BIT_GENERIC13   (1 << VERT_ATTRIB_GENERIC13)
+#define VERT_BIT_GENERIC14   (1 << VERT_ATTRIB_GENERIC14)
+#define VERT_BIT_GENERIC15   (1 << VERT_ATTRIB_GENERIC15)
+
+#define VERT_BIT_TEX(u)  (1 << (VERT_ATTRIB_TEX0 + (u)))
+#define VERT_BIT_GENERIC(g)  (1 << (VERT_ATTRIB_GENERIC0 + (g)))
+/*@}*/
+
+
+/**
+ * Indexes for vertex program result attributes
+ */
+typedef enum
+{
+   VERT_RESULT_HPOS = 0,
+   VERT_RESULT_COL0 = 1,
+   VERT_RESULT_COL1 = 2,
+   VERT_RESULT_FOGC = 3,
+   VERT_RESULT_TEX0 = 4,
+   VERT_RESULT_TEX1 = 5,
+   VERT_RESULT_TEX2 = 6,
+   VERT_RESULT_TEX3 = 7,
+   VERT_RESULT_TEX4 = 8,
+   VERT_RESULT_TEX5 = 9,
+   VERT_RESULT_TEX6 = 10,
+   VERT_RESULT_TEX7 = 11,
+   VERT_RESULT_PSIZ = 12,
+   VERT_RESULT_BFC0 = 13,
+   VERT_RESULT_BFC1 = 14,
+   VERT_RESULT_EDGE = 15,
+   VERT_RESULT_VAR0 = 16,  /**< shader varying */
+   VERT_RESULT_MAX = (VERT_RESULT_VAR0 + MAX_VARYING)
+} gl_vert_result;
+
+
+/*********************************************/
+
+/**
+ * Indexes for geometry program attributes.
+ */
+typedef enum
+{
+   GEOM_ATTRIB_POSITION = 0,
+   GEOM_ATTRIB_COLOR0 = 1,
+   GEOM_ATTRIB_COLOR1 = 2,
+   GEOM_ATTRIB_SECONDARY_COLOR0 = 3,
+   GEOM_ATTRIB_SECONDARY_COLOR1 = 4,
+   GEOM_ATTRIB_FOG_FRAG_COORD = 5,
+   GEOM_ATTRIB_POINT_SIZE = 6,
+   GEOM_ATTRIB_CLIP_VERTEX = 7,
+   GEOM_ATTRIB_PRIMITIVE_ID = 8,
+   GEOM_ATTRIB_TEX_COORD = 9,
+
+   GEOM_ATTRIB_VAR0 = 16,
+   GEOM_ATTRIB_MAX = (GEOM_ATTRIB_VAR0 + MAX_VARYING)
+} gl_geom_attrib;
+
+/**
+ * Bitflags for geometry attributes.
+ * These are used in bitfields in many places.
+ */
+/*@{*/
+#define GEOM_BIT_COLOR0      (1 << GEOM_ATTRIB_COLOR0)
+#define GEOM_BIT_COLOR1      (1 << GEOM_ATTRIB_COLOR1)
+#define GEOM_BIT_SCOLOR0     (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
+#define GEOM_BIT_SCOLOR1     (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
+#define GEOM_BIT_TEX_COORD   (1 << GEOM_ATTRIB_TEX_COORD)
+#define GEOM_BIT_FOG_COORD   (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
+#define GEOM_BIT_POSITION    (1 << GEOM_ATTRIB_POSITION)
+#define GEOM_BIT_POINT_SIDE  (1 << GEOM_ATTRIB_POINT_SIZE)
+#define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
+#define GEOM_BIT_PRIM_ID     (1 << GEOM_ATTRIB_PRIMITIVE_ID)
+#define GEOM_BIT_VAR0        (1 << GEOM_ATTRIB_VAR0)
+
+#define GEOM_BIT_VAR(g)  (1 << (GEOM_BIT_VAR0 + (g)))
+/*@}*/
+
+
+/**
+ * Indexes for geometry program result attributes
+ */
+typedef enum
+{
+   GEOM_RESULT_POS  = 0,
+   GEOM_RESULT_COL0  = 1,
+   GEOM_RESULT_COL1  = 2,
+   GEOM_RESULT_SCOL0 = 3,
+   GEOM_RESULT_SCOL1 = 4,
+   GEOM_RESULT_FOGC = 5,
+   GEOM_RESULT_TEX0 = 6,
+   GEOM_RESULT_TEX1 = 7,
+   GEOM_RESULT_TEX2 = 8,
+   GEOM_RESULT_TEX3 = 9,
+   GEOM_RESULT_TEX4 = 10,
+   GEOM_RESULT_TEX5 = 11,
+   GEOM_RESULT_TEX6 = 12,
+   GEOM_RESULT_TEX7 = 13,
+   GEOM_RESULT_PSIZ = 14,
+   GEOM_RESULT_CLPV = 15,
+   GEOM_RESULT_PRID = 16,
+   GEOM_RESULT_LAYR = 17,
+   GEOM_RESULT_VAR0 = 18,  /**< shader varying, should really be 16 */
+   /* ### we need to -2 because var0 is 18 instead 16 like in the others */
+   GEOM_RESULT_MAX  =  (GEOM_RESULT_VAR0 + MAX_VARYING - 2)
+} gl_geom_result;
+
+
+/**
+ * Indexes for fragment program input attributes.
+ */
+typedef enum
+{
+   FRAG_ATTRIB_WPOS = 0,
+   FRAG_ATTRIB_COL0 = 1,
+   FRAG_ATTRIB_COL1 = 2,
+   FRAG_ATTRIB_FOGC = 3,
+   FRAG_ATTRIB_TEX0 = 4,
+   FRAG_ATTRIB_TEX1 = 5,
+   FRAG_ATTRIB_TEX2 = 6,
+   FRAG_ATTRIB_TEX3 = 7,
+   FRAG_ATTRIB_TEX4 = 8,
+   FRAG_ATTRIB_TEX5 = 9,
+   FRAG_ATTRIB_TEX6 = 10,
+   FRAG_ATTRIB_TEX7 = 11,
+   FRAG_ATTRIB_FACE = 12,  /**< front/back face */
+   FRAG_ATTRIB_PNTC = 13,  /**< sprite/point coord */
+   FRAG_ATTRIB_VAR0 = 14,  /**< shader varying */
+   FRAG_ATTRIB_MAX = (FRAG_ATTRIB_VAR0 + MAX_VARYING)
+} gl_frag_attrib;
+
+/**
+ * Bitflags for fragment program input attributes.
+ */
+/*@{*/
+#define FRAG_BIT_WPOS  (1 << FRAG_ATTRIB_WPOS)
+#define FRAG_BIT_COL0  (1 << FRAG_ATTRIB_COL0)
+#define FRAG_BIT_COL1  (1 << FRAG_ATTRIB_COL1)
+#define FRAG_BIT_FOGC  (1 << FRAG_ATTRIB_FOGC)
+#define FRAG_BIT_FACE  (1 << FRAG_ATTRIB_FACE)
+#define FRAG_BIT_PNTC  (1 << FRAG_ATTRIB_PNTC)
+#define FRAG_BIT_TEX0  (1 << FRAG_ATTRIB_TEX0)
+#define FRAG_BIT_TEX1  (1 << FRAG_ATTRIB_TEX1)
+#define FRAG_BIT_TEX2  (1 << FRAG_ATTRIB_TEX2)
+#define FRAG_BIT_TEX3  (1 << FRAG_ATTRIB_TEX3)
+#define FRAG_BIT_TEX4  (1 << FRAG_ATTRIB_TEX4)
+#define FRAG_BIT_TEX5  (1 << FRAG_ATTRIB_TEX5)
+#define FRAG_BIT_TEX6  (1 << FRAG_ATTRIB_TEX6)
+#define FRAG_BIT_TEX7  (1 << FRAG_ATTRIB_TEX7)
+#define FRAG_BIT_VAR0  (1 << FRAG_ATTRIB_VAR0)
+
+#define FRAG_BIT_TEX(U)  (FRAG_BIT_TEX0 << (U))
+#define FRAG_BIT_VAR(V)  (FRAG_BIT_VAR0 << (V))
+
+#define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0|	\
+			   FRAG_BIT_TEX1|	\
+			   FRAG_BIT_TEX2|	\
+			   FRAG_BIT_TEX3|	\
+			   FRAG_BIT_TEX4|	\
+			   FRAG_BIT_TEX5|	\
+			   FRAG_BIT_TEX6|	\
+			   FRAG_BIT_TEX7)
+/*@}*/
+
+
+/**
+ * Fragment program results
+ */
+typedef enum
+{
+   FRAG_RESULT_DEPTH = 0,
+   FRAG_RESULT_STENCIL = 1,
+   FRAG_RESULT_COLOR = 2,
+   FRAG_RESULT_DATA0 = 3,
+   FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS)
+} gl_frag_result;
+
+
+/**
+ * Indexes for all renderbuffers
+ */
+typedef enum
+{
+   /* the four standard color buffers */
+   BUFFER_FRONT_LEFT,
+   BUFFER_BACK_LEFT,
+   BUFFER_FRONT_RIGHT,
+   BUFFER_BACK_RIGHT,
+   BUFFER_DEPTH,
+   BUFFER_STENCIL,
+   BUFFER_ACCUM,
+   /* optional aux buffer */
+   BUFFER_AUX0,
+   /* generic renderbuffers */
+   BUFFER_COLOR0,
+   BUFFER_COLOR1,
+   BUFFER_COLOR2,
+   BUFFER_COLOR3,
+   BUFFER_COLOR4,
+   BUFFER_COLOR5,
+   BUFFER_COLOR6,
+   BUFFER_COLOR7,
+   BUFFER_COUNT
+} gl_buffer_index;
+
+/**
+ * Bit flags for all renderbuffers
+ */
+#define BUFFER_BIT_FRONT_LEFT   (1 << BUFFER_FRONT_LEFT)
+#define BUFFER_BIT_BACK_LEFT    (1 << BUFFER_BACK_LEFT)
+#define BUFFER_BIT_FRONT_RIGHT  (1 << BUFFER_FRONT_RIGHT)
+#define BUFFER_BIT_BACK_RIGHT   (1 << BUFFER_BACK_RIGHT)
+#define BUFFER_BIT_AUX0         (1 << BUFFER_AUX0)
+#define BUFFER_BIT_AUX1         (1 << BUFFER_AUX1)
+#define BUFFER_BIT_AUX2         (1 << BUFFER_AUX2)
+#define BUFFER_BIT_AUX3         (1 << BUFFER_AUX3)
+#define BUFFER_BIT_DEPTH        (1 << BUFFER_DEPTH)
+#define BUFFER_BIT_STENCIL      (1 << BUFFER_STENCIL)
+#define BUFFER_BIT_ACCUM        (1 << BUFFER_ACCUM)
+#define BUFFER_BIT_COLOR0       (1 << BUFFER_COLOR0)
+#define BUFFER_BIT_COLOR1       (1 << BUFFER_COLOR1)
+#define BUFFER_BIT_COLOR2       (1 << BUFFER_COLOR2)
+#define BUFFER_BIT_COLOR3       (1 << BUFFER_COLOR3)
+#define BUFFER_BIT_COLOR4       (1 << BUFFER_COLOR4)
+#define BUFFER_BIT_COLOR5       (1 << BUFFER_COLOR5)
+#define BUFFER_BIT_COLOR6       (1 << BUFFER_COLOR6)
+#define BUFFER_BIT_COLOR7       (1 << BUFFER_COLOR7)
+
+/**
+ * Mask of all the color buffer bits (but not accum).
+ */
+#define BUFFER_BITS_COLOR  (BUFFER_BIT_FRONT_LEFT | \
+                            BUFFER_BIT_BACK_LEFT | \
+                            BUFFER_BIT_FRONT_RIGHT | \
+                            BUFFER_BIT_BACK_RIGHT | \
+                            BUFFER_BIT_AUX0 | \
+                            BUFFER_BIT_COLOR0 | \
+                            BUFFER_BIT_COLOR1 | \
+                            BUFFER_BIT_COLOR2 | \
+                            BUFFER_BIT_COLOR3 | \
+                            BUFFER_BIT_COLOR4 | \
+                            BUFFER_BIT_COLOR5 | \
+                            BUFFER_BIT_COLOR6 | \
+                            BUFFER_BIT_COLOR7)
+
+
+/**
+ * Framebuffer configuration (aka visual / pixelformat)
+ * Note: some of these fields should be boolean, but it appears that
+ * code in drivers/dri/common/util.c requires int-sized fields.
+ */
+struct gl_config
+{
+   GLboolean rgbMode;
+   GLboolean floatMode;
+   GLboolean colorIndexMode;  /* XXX is this used anywhere? */
+   GLuint doubleBufferMode;
+   GLuint stereoMode;
+
+   GLboolean haveAccumBuffer;
+   GLboolean haveDepthBuffer;
+   GLboolean haveStencilBuffer;
+
+   GLint redBits, greenBits, blueBits, alphaBits;	/* bits per comp */
+   GLuint redMask, greenMask, blueMask, alphaMask;
+   GLint rgbBits;		/* total bits for rgb */
+   GLint indexBits;		/* total bits for colorindex */
+
+   GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits;
+   GLint depthBits;
+   GLint stencilBits;
+
+   GLint numAuxBuffers;
+
+   GLint level;
+
+   /* EXT_visual_rating / GLX 1.2 */
+   GLint visualRating;
+
+   /* EXT_visual_info / GLX 1.2 */
+   GLint transparentPixel;
+   /*    colors are floats scaled to ints */
+   GLint transparentRed, transparentGreen, transparentBlue, transparentAlpha;
+   GLint transparentIndex;
+
+   /* ARB_multisample / SGIS_multisample */
+   GLint sampleBuffers;
+   GLint samples;
+
+   /* SGIX_pbuffer / GLX 1.3 */
+   GLint maxPbufferWidth;
+   GLint maxPbufferHeight;
+   GLint maxPbufferPixels;
+   GLint optimalPbufferWidth;   /* Only for SGIX_pbuffer. */
+   GLint optimalPbufferHeight;  /* Only for SGIX_pbuffer. */
+
+   /* OML_swap_method */
+   GLint swapMethod;
+
+   /* EXT_texture_from_pixmap */
+   GLint bindToTextureRgb;
+   GLint bindToTextureRgba;
+   GLint bindToMipmapTexture;
+   GLint bindToTextureTargets;
+   GLint yInverted;
+
+   /* EXT_framebuffer_sRGB */
+   GLint sRGBCapable;
+};
+
+
+/**
+ * Data structure for color tables
+ */
+struct gl_color_table
+{
+   GLenum InternalFormat;      /**< The user-specified format */
+   GLenum _BaseFormat;         /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
+   GLuint Size;                /**< number of entries in table */
+   GLfloat *TableF;            /**< Color table, floating point values */
+   GLubyte *TableUB;           /**< Color table, ubyte values */
+   GLubyte RedSize;
+   GLubyte GreenSize;
+   GLubyte BlueSize;
+   GLubyte AlphaSize;
+   GLubyte LuminanceSize;
+   GLubyte IntensitySize;
+};
+
+
+/**
+ * \name Bit flags used for updating material values.
+ */
+/*@{*/
+#define MAT_ATTRIB_FRONT_AMBIENT           0 
+#define MAT_ATTRIB_BACK_AMBIENT            1
+#define MAT_ATTRIB_FRONT_DIFFUSE           2 
+#define MAT_ATTRIB_BACK_DIFFUSE            3
+#define MAT_ATTRIB_FRONT_SPECULAR          4 
+#define MAT_ATTRIB_BACK_SPECULAR           5
+#define MAT_ATTRIB_FRONT_EMISSION          6
+#define MAT_ATTRIB_BACK_EMISSION           7
+#define MAT_ATTRIB_FRONT_SHININESS         8
+#define MAT_ATTRIB_BACK_SHININESS          9
+#define MAT_ATTRIB_FRONT_INDEXES           10
+#define MAT_ATTRIB_BACK_INDEXES            11
+#define MAT_ATTRIB_MAX                     12
+
+#define MAT_ATTRIB_AMBIENT(f)  (MAT_ATTRIB_FRONT_AMBIENT+(f))  
+#define MAT_ATTRIB_DIFFUSE(f)  (MAT_ATTRIB_FRONT_DIFFUSE+(f))  
+#define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f)) 
+#define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f)) 
+#define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
+#define MAT_ATTRIB_INDEXES(f)  (MAT_ATTRIB_FRONT_INDEXES+(f))  
+
+#define MAT_INDEX_AMBIENT  0
+#define MAT_INDEX_DIFFUSE  1
+#define MAT_INDEX_SPECULAR 2
+
+#define MAT_BIT_FRONT_AMBIENT         (1<<MAT_ATTRIB_FRONT_AMBIENT)
+#define MAT_BIT_BACK_AMBIENT          (1<<MAT_ATTRIB_BACK_AMBIENT)
+#define MAT_BIT_FRONT_DIFFUSE         (1<<MAT_ATTRIB_FRONT_DIFFUSE)
+#define MAT_BIT_BACK_DIFFUSE          (1<<MAT_ATTRIB_BACK_DIFFUSE)
+#define MAT_BIT_FRONT_SPECULAR        (1<<MAT_ATTRIB_FRONT_SPECULAR)
+#define MAT_BIT_BACK_SPECULAR         (1<<MAT_ATTRIB_BACK_SPECULAR)
+#define MAT_BIT_FRONT_EMISSION        (1<<MAT_ATTRIB_FRONT_EMISSION)
+#define MAT_BIT_BACK_EMISSION         (1<<MAT_ATTRIB_BACK_EMISSION)
+#define MAT_BIT_FRONT_SHININESS       (1<<MAT_ATTRIB_FRONT_SHININESS)
+#define MAT_BIT_BACK_SHININESS        (1<<MAT_ATTRIB_BACK_SHININESS)
+#define MAT_BIT_FRONT_INDEXES         (1<<MAT_ATTRIB_FRONT_INDEXES)
+#define MAT_BIT_BACK_INDEXES          (1<<MAT_ATTRIB_BACK_INDEXES)
+
+
+#define FRONT_MATERIAL_BITS	(MAT_BIT_FRONT_EMISSION | 	\
+				 MAT_BIT_FRONT_AMBIENT |	\
+				 MAT_BIT_FRONT_DIFFUSE | 	\
+				 MAT_BIT_FRONT_SPECULAR |	\
+				 MAT_BIT_FRONT_SHININESS | 	\
+				 MAT_BIT_FRONT_INDEXES)
+
+#define BACK_MATERIAL_BITS	(MAT_BIT_BACK_EMISSION |	\
+				 MAT_BIT_BACK_AMBIENT |		\
+				 MAT_BIT_BACK_DIFFUSE |		\
+				 MAT_BIT_BACK_SPECULAR |	\
+				 MAT_BIT_BACK_SHININESS |	\
+				 MAT_BIT_BACK_INDEXES)
+
+#define ALL_MATERIAL_BITS	(FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
+/*@}*/
+
+
+#define EXP_TABLE_SIZE 512	/**< Specular exponent lookup table sizes */
+#define SHINE_TABLE_SIZE 256	/**< Material shininess lookup table sizes */
+
+/**
+ * Material shininess lookup table.
+ */
+struct gl_shine_tab
+{
+   struct gl_shine_tab *next, *prev;
+   GLfloat tab[SHINE_TABLE_SIZE+1];
+   GLfloat shininess;
+   GLuint refcount;
+};
+
+
+/**
+ * Light source state.
+ */
+struct gl_light
+{
+   struct gl_light *next;	/**< double linked list with sentinel */
+   struct gl_light *prev;
+
+   GLfloat Ambient[4];		/**< ambient color */
+   GLfloat Diffuse[4];		/**< diffuse color */
+   GLfloat Specular[4];		/**< specular color */
+   GLfloat EyePosition[4];	/**< position in eye coordinates */
+   GLfloat SpotDirection[4];	/**< spotlight direction in eye coordinates */
+   GLfloat SpotExponent;
+   GLfloat SpotCutoff;		/**< in degrees */
+   GLfloat _CosCutoffNeg;	/**< = cos(SpotCutoff) */
+   GLfloat _CosCutoff;		/**< = MAX(0, cos(SpotCutoff)) */
+   GLfloat ConstantAttenuation;
+   GLfloat LinearAttenuation;
+   GLfloat QuadraticAttenuation;
+   GLboolean Enabled;		/**< On/off flag */
+
+   /** 
+    * \name Derived fields
+    */
+   /*@{*/
+   GLbitfield _Flags;		/**< State */
+
+   GLfloat _Position[4];	/**< position in eye/obj coordinates */
+   GLfloat _VP_inf_norm[3];	/**< Norm direction to infinite light */
+   GLfloat _h_inf_norm[3];	/**< Norm( _VP_inf_norm + <0,0,1> ) */
+   GLfloat _NormSpotDirection[4]; /**< normalized spotlight direction */
+   GLfloat _VP_inf_spot_attenuation;
+
+   GLfloat _SpotExpTable[EXP_TABLE_SIZE][2];  /**< to replace a pow() call */
+   GLfloat _MatAmbient[2][3];	/**< material ambient * light ambient */
+   GLfloat _MatDiffuse[2][3];	/**< material diffuse * light diffuse */
+   GLfloat _MatSpecular[2][3];	/**< material spec * light specular */
+   GLfloat _dli;		/**< CI diffuse light intensity */
+   GLfloat _sli;		/**< CI specular light intensity */
+   /*@}*/
+};
+
+
+/**
+ * Light model state.
+ */
+struct gl_lightmodel
+{
+   GLfloat Ambient[4];		/**< ambient color */
+   GLboolean LocalViewer;	/**< Local (or infinite) view point? */
+   GLboolean TwoSide;		/**< Two (or one) sided lighting? */
+   GLenum ColorControl;		/**< either GL_SINGLE_COLOR
+				 *    or GL_SEPARATE_SPECULAR_COLOR */
+};
+
+
+/**
+ * Material state.
+ */
+struct gl_material
+{
+   GLfloat Attrib[MAT_ATTRIB_MAX][4];
+};
+
+
+/**
+ * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
+ */
+struct gl_accum_attrib
+{
+   GLfloat ClearColor[4];	/**< Accumulation buffer clear color */
+};
+
+
+/**
+ * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
+ */
+struct gl_colorbuffer_attrib
+{
+   GLuint ClearIndex;			/**< Index to use for glClear */
+   GLclampf ClearColor[4];		/**< Color to use for glClear */
+
+   GLuint IndexMask;			/**< Color index write mask */
+   GLubyte ColorMask[MAX_DRAW_BUFFERS][4];/**< Each flag is 0xff or 0x0 */
+
+   GLenum DrawBuffer[MAX_DRAW_BUFFERS];	/**< Which buffer to draw into */
+
+   /** 
+    * \name alpha testing
+    */
+   /*@{*/
+   GLboolean AlphaEnabled;		/**< Alpha test enabled flag */
+   GLenum AlphaFunc;			/**< Alpha test function */
+   GLclampf AlphaRef;			/**< Alpha reference value */
+   /*@}*/
+
+   /** 
+    * \name Blending
+    */
+   /*@{*/
+   GLbitfield BlendEnabled;		/**< Per-buffer blend enable flags */
+   GLfloat BlendColor[4];		/**< Blending color */
+   struct
+   {
+      GLenum SrcRGB;             /**< RGB blend source term */
+      GLenum DstRGB;             /**< RGB blend dest term */
+      GLenum SrcA;               /**< Alpha blend source term */
+      GLenum DstA;               /**< Alpha blend dest term */
+      GLenum EquationRGB;        /**< GL_ADD, GL_SUBTRACT, etc. */
+      GLenum EquationA;          /**< GL_ADD, GL_SUBTRACT, etc. */
+   } Blend[MAX_DRAW_BUFFERS];
+   /** Are the blend func terms currently different for each buffer/target? */
+   GLboolean _BlendFuncPerBuffer;
+   /** Are the blend equations currently different for each buffer/target? */
+   GLboolean _BlendEquationPerBuffer;
+   /*@}*/
+
+   /** 
+    * \name Logic op
+    */
+   /*@{*/
+   GLenum LogicOp;			/**< Logic operator */
+   GLboolean IndexLogicOpEnabled;	/**< Color index logic op enabled flag */
+   GLboolean ColorLogicOpEnabled;	/**< RGBA logic op enabled flag */
+   GLboolean _LogicOpEnabled;		/**< RGBA logic op + EXT_blend_logic_op enabled flag */
+   /*@}*/
+
+   GLboolean DitherFlag;		/**< Dither enable flag */
+
+   GLenum ClampFragmentColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
+   GLenum ClampReadColor;     /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
+
+   GLboolean sRGBEnabled;	/**< Framebuffer sRGB blending/updating requested */
+};
+
+
+/**
+ * Current attribute group (GL_CURRENT_BIT).
+ */
+struct gl_current_attrib
+{
+   /**
+    * \name Current vertex attributes.
+    * \note Values are valid only after FLUSH_VERTICES has been called.
+    * \note Index and Edgeflag current values are stored as floats in the 
+    * SIX and SEVEN attribute slots.
+    */
+   GLfloat Attrib[VERT_ATTRIB_MAX][4];	/**< Position, color, texcoords, etc */
+
+   /**
+    * \name Current raster position attributes (always valid).
+    * \note This set of attributes is very similar to the SWvertex struct.
+    */
+   /*@{*/
+   GLfloat RasterPos[4];
+   GLfloat RasterDistance;
+   GLfloat RasterColor[4];
+   GLfloat RasterSecondaryColor[4];
+   GLfloat RasterTexCoords[MAX_TEXTURE_COORD_UNITS][4];
+   GLboolean RasterPosValid;
+   /*@}*/
+};
+
+
+/**
+ * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
+ */
+struct gl_depthbuffer_attrib
+{
+   GLenum Func;			/**< Function for depth buffer compare */
+   GLclampd Clear;		/**< Value to clear depth buffer to */
+   GLboolean Test;		/**< Depth buffering enabled flag */
+   GLboolean Mask;		/**< Depth buffer writable? */
+   GLboolean BoundsTest;        /**< GL_EXT_depth_bounds_test */
+   GLfloat BoundsMin, BoundsMax;/**< GL_EXT_depth_bounds_test */
+};
+
+
+/**
+ * Evaluator attribute group (GL_EVAL_BIT).
+ */
+struct gl_eval_attrib
+{
+   /**
+    * \name Enable bits 
+    */
+   /*@{*/
+   GLboolean Map1Color4;
+   GLboolean Map1Index;
+   GLboolean Map1Normal;
+   GLboolean Map1TextureCoord1;
+   GLboolean Map1TextureCoord2;
+   GLboolean Map1TextureCoord3;
+   GLboolean Map1TextureCoord4;
+   GLboolean Map1Vertex3;
+   GLboolean Map1Vertex4;
+   GLboolean Map1Attrib[16];  /* GL_NV_vertex_program */
+   GLboolean Map2Color4;
+   GLboolean Map2Index;
+   GLboolean Map2Normal;
+   GLboolean Map2TextureCoord1;
+   GLboolean Map2TextureCoord2;
+   GLboolean Map2TextureCoord3;
+   GLboolean Map2TextureCoord4;
+   GLboolean Map2Vertex3;
+   GLboolean Map2Vertex4;
+   GLboolean Map2Attrib[16];  /* GL_NV_vertex_program */
+   GLboolean AutoNormal;
+   /*@}*/
+   
+   /**
+    * \name Map Grid endpoints and divisions and calculated du values
+    */
+   /*@{*/
+   GLint MapGrid1un;
+   GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du;
+   GLint MapGrid2un, MapGrid2vn;
+   GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du;
+   GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv;
+   /*@}*/
+};
+
+
+/**
+ * Fog attribute group (GL_FOG_BIT).
+ */
+struct gl_fog_attrib
+{
+   GLboolean Enabled;		/**< Fog enabled flag */
+   GLfloat Color[4];		/**< Fog color */
+   GLfloat Density;		/**< Density >= 0.0 */
+   GLfloat Start;		/**< Start distance in eye coords */
+   GLfloat End;			/**< End distance in eye coords */
+   GLfloat Index;		/**< Fog index */
+   GLenum Mode;			/**< Fog mode */
+   GLboolean ColorSumEnabled;
+   GLenum FogCoordinateSource;  /**< GL_EXT_fog_coord */
+   GLfloat _Scale;		/**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
+};
+
+
+/**
+ * \brief Layout qualifiers for gl_FragDepth.
+ *
+ * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
+ * a layout qualifier.
+ *
+ * \see enum ir_depth_layout
+ */
+enum gl_frag_depth_layout {
+    FRAG_DEPTH_LAYOUT_NONE, /**< No layout is specified. */
+    FRAG_DEPTH_LAYOUT_ANY,
+    FRAG_DEPTH_LAYOUT_GREATER,
+    FRAG_DEPTH_LAYOUT_LESS,
+    FRAG_DEPTH_LAYOUT_UNCHANGED
+};
+
+
+/** 
+ * Hint attribute group (GL_HINT_BIT).
+ * 
+ * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
+ */
+struct gl_hint_attrib
+{
+   GLenum PerspectiveCorrection;
+   GLenum PointSmooth;
+   GLenum LineSmooth;
+   GLenum PolygonSmooth;
+   GLenum Fog;
+   GLenum ClipVolumeClipping;   /**< GL_EXT_clip_volume_hint */
+   GLenum TextureCompression;   /**< GL_ARB_texture_compression */
+   GLenum GenerateMipmap;       /**< GL_SGIS_generate_mipmap */
+   GLenum FragmentShaderDerivative; /**< GL_ARB_fragment_shader */
+};
+
+/**
+ * Light state flags.
+ */
+/*@{*/
+#define LIGHT_SPOT         0x1
+#define LIGHT_LOCAL_VIEWER 0x2
+#define LIGHT_POSITIONAL   0x4
+#define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
+/*@}*/
+
+
+/**
+ * Lighting attribute group (GL_LIGHT_BIT).
+ */
+struct gl_light_attrib
+{
+   struct gl_light Light[MAX_LIGHTS];	/**< Array of light sources */
+   struct gl_lightmodel Model;		/**< Lighting model */
+
+   /**
+    * Must flush FLUSH_VERTICES before referencing:
+    */
+   /*@{*/
+   struct gl_material Material; 	/**< Includes front & back values */
+   /*@}*/
+
+   GLboolean Enabled;			/**< Lighting enabled flag */
+   GLenum ShadeModel;			/**< GL_FLAT or GL_SMOOTH */
+   GLenum ProvokingVertex;              /**< GL_EXT_provoking_vertex */
+   GLenum ColorMaterialFace;		/**< GL_FRONT, BACK or FRONT_AND_BACK */
+   GLenum ColorMaterialMode;		/**< GL_AMBIENT, GL_DIFFUSE, etc */
+   GLbitfield ColorMaterialBitmask;	/**< bitmask formed from Face and Mode */
+   GLboolean ColorMaterialEnabled;
+   GLenum ClampVertexColor;
+
+   struct gl_light EnabledList;         /**< List sentinel */
+
+   /** 
+    * Derived state for optimizations: 
+    */
+   /*@{*/
+   GLboolean _NeedEyeCoords;		
+   GLboolean _NeedVertices;		/**< Use fast shader? */
+   GLbitfield _Flags;		        /**< LIGHT_* flags, see above */
+   GLfloat _BaseColor[2][3];
+   /*@}*/
+};
+
+
+/**
+ * Line attribute group (GL_LINE_BIT).
+ */
+struct gl_line_attrib
+{
+   GLboolean SmoothFlag;	/**< GL_LINE_SMOOTH enabled? */
+   GLboolean StippleFlag;	/**< GL_LINE_STIPPLE enabled? */
+   GLushort StipplePattern;	/**< Stipple pattern */
+   GLint StippleFactor;		/**< Stipple repeat factor */
+   GLfloat Width;		/**< Line width */
+};
+
+
+/**
+ * Display list attribute group (GL_LIST_BIT).
+ */
+struct gl_list_attrib
+{
+   GLuint ListBase;
+};
+
+
+/**
+ * Multisample attribute group (GL_MULTISAMPLE_BIT).
+ */
+struct gl_multisample_attrib
+{
+   GLboolean Enabled;
+   GLboolean _Enabled;   /**< true if Enabled and multisample buffer */
+   GLboolean SampleAlphaToCoverage;
+   GLboolean SampleAlphaToOne;
+   GLboolean SampleCoverage;
+   GLfloat SampleCoverageValue;
+   GLboolean SampleCoverageInvert;
+};
+
+
+/**
+ * A pixelmap (see glPixelMap)
+ */
+struct gl_pixelmap
+{
+   GLint Size;
+   GLfloat Map[MAX_PIXEL_MAP_TABLE];
+   GLubyte Map8[MAX_PIXEL_MAP_TABLE];  /**< converted to 8-bit color */
+};
+
+
+/**
+ * Collection of all pixelmaps
+ */
+struct gl_pixelmaps
+{
+   struct gl_pixelmap RtoR;  /**< i.e. GL_PIXEL_MAP_R_TO_R */
+   struct gl_pixelmap GtoG;
+   struct gl_pixelmap BtoB;
+   struct gl_pixelmap AtoA;
+   struct gl_pixelmap ItoR;
+   struct gl_pixelmap ItoG;
+   struct gl_pixelmap ItoB;
+   struct gl_pixelmap ItoA;
+   struct gl_pixelmap ItoI;
+   struct gl_pixelmap StoS;
+};
+
+
+/**
+ * Pixel attribute group (GL_PIXEL_MODE_BIT).
+ */
+struct gl_pixel_attrib
+{
+   GLenum ReadBuffer;		/**< source buffer for glRead/CopyPixels() */
+
+   /*--- Begin Pixel Transfer State ---*/
+   /* Fields are in the order in which they're applied... */
+
+   /** Scale & Bias (index shift, offset) */
+   /*@{*/
+   GLfloat RedBias, RedScale;
+   GLfloat GreenBias, GreenScale;
+   GLfloat BlueBias, BlueScale;
+   GLfloat AlphaBias, AlphaScale;
+   GLfloat DepthBias, DepthScale;
+   GLint IndexShift, IndexOffset;
+   /*@}*/
+
+   /* Pixel Maps */
+   /* Note: actual pixel maps are not part of this attrib group */
+   GLboolean MapColorFlag;
+   GLboolean MapStencilFlag;
+
+   /*--- End Pixel Transfer State ---*/
+
+   /** glPixelZoom */
+   GLfloat ZoomX, ZoomY;
+};
+
+
+/**
+ * Point attribute group (GL_POINT_BIT).
+ */
+struct gl_point_attrib
+{
+   GLboolean SmoothFlag;	/**< True if GL_POINT_SMOOTH is enabled */
+   GLfloat Size;		/**< User-specified point size */
+   GLfloat Params[3];		/**< GL_EXT_point_parameters */
+   GLfloat MinSize, MaxSize;	/**< GL_EXT_point_parameters */
+   GLfloat Threshold;		/**< GL_EXT_point_parameters */
+   GLboolean _Attenuated;	/**< True if Params != [1, 0, 0] */
+   GLboolean PointSprite;	/**< GL_NV/ARB_point_sprite */
+   GLboolean CoordReplace[MAX_TEXTURE_COORD_UNITS]; /**< GL_ARB_point_sprite*/
+   GLenum SpriteRMode;		/**< GL_NV_point_sprite (only!) */
+   GLenum SpriteOrigin;		/**< GL_ARB_point_sprite */
+};
+
+
+/**
+ * Polygon attribute group (GL_POLYGON_BIT).
+ */
+struct gl_polygon_attrib
+{
+   GLenum FrontFace;		/**< Either GL_CW or GL_CCW */
+   GLenum FrontMode;		/**< Either GL_POINT, GL_LINE or GL_FILL */
+   GLenum BackMode;		/**< Either GL_POINT, GL_LINE or GL_FILL */
+   GLboolean _FrontBit;		/**< 0=GL_CCW, 1=GL_CW */
+   GLboolean CullFlag;		/**< Culling on/off flag */
+   GLboolean SmoothFlag;	/**< True if GL_POLYGON_SMOOTH is enabled */
+   GLboolean StippleFlag;	/**< True if GL_POLYGON_STIPPLE is enabled */
+   GLenum CullFaceMode;		/**< Culling mode GL_FRONT or GL_BACK */
+   GLfloat OffsetFactor;	/**< Polygon offset factor, from user */
+   GLfloat OffsetUnits;		/**< Polygon offset units, from user */
+   GLboolean OffsetPoint;	/**< Offset in GL_POINT mode */
+   GLboolean OffsetLine;	/**< Offset in GL_LINE mode */
+   GLboolean OffsetFill;	/**< Offset in GL_FILL mode */
+};
+
+
+/**
+ * Scissor attributes (GL_SCISSOR_BIT).
+ */
+struct gl_scissor_attrib
+{
+   GLboolean Enabled;		/**< Scissor test enabled? */
+   GLint X, Y;			/**< Lower left corner of box */
+   GLsizei Width, Height;	/**< Size of box */
+};
+
+
+/**
+ * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
+ *
+ * Three sets of stencil data are tracked so that OpenGL 2.0,
+ * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
+ * simultaneously.  In each of the stencil state arrays, element 0 corresponds
+ * to GL_FRONT.  Element 1 corresponds to the OpenGL 2.0 /
+ * GL_ATI_separate_stencil GL_BACK state.  Element 2 corresponds to the
+ * GL_EXT_stencil_two_side GL_BACK state.
+ *
+ * The derived value \c _BackFace is either 1 or 2 depending on whether or
+ * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
+ *
+ * The derived value \c _TestTwoSide is set when the front-face and back-face
+ * stencil state are different.
+ */
+struct gl_stencil_attrib
+{
+   GLboolean Enabled;		/**< Enabled flag */
+   GLboolean TestTwoSide;	/**< GL_EXT_stencil_two_side */
+   GLubyte ActiveFace;		/**< GL_EXT_stencil_two_side (0 or 2) */
+   GLboolean _Enabled;          /**< Enabled and stencil buffer present */
+   GLboolean _TestTwoSide;
+   GLubyte _BackFace;           /**< Current back stencil state (1 or 2) */
+   GLenum Function[3];		/**< Stencil function */
+   GLenum FailFunc[3];		/**< Fail function */
+   GLenum ZPassFunc[3];		/**< Depth buffer pass function */
+   GLenum ZFailFunc[3];		/**< Depth buffer fail function */
+   GLint Ref[3];		/**< Reference value */
+   GLuint ValueMask[3];		/**< Value mask */
+   GLuint WriteMask[3];		/**< Write mask */
+   GLuint Clear;		/**< Clear value */
+};
+
+
+/**
+ * An index for each type of texture object.  These correspond to the GL
+ * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
+ * Note: the order is from highest priority to lowest priority.
+ */
+typedef enum
+{
+   TEXTURE_2D_ARRAY_INDEX,
+   TEXTURE_1D_ARRAY_INDEX,
+   TEXTURE_CUBE_INDEX,
+   TEXTURE_3D_INDEX,
+   TEXTURE_RECT_INDEX,
+   TEXTURE_2D_INDEX,
+   TEXTURE_1D_INDEX,
+   NUM_TEXTURE_TARGETS
+} gl_texture_index;
+
+
+/**
+ * Bit flags for each type of texture object
+ * Used for Texture.Unit[]._ReallyEnabled flags.
+ */
+/*@{*/
+#define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
+#define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
+#define TEXTURE_CUBE_BIT     (1 << TEXTURE_CUBE_INDEX)
+#define TEXTURE_3D_BIT       (1 << TEXTURE_3D_INDEX)
+#define TEXTURE_RECT_BIT     (1 << TEXTURE_RECT_INDEX)
+#define TEXTURE_2D_BIT       (1 << TEXTURE_2D_INDEX)
+#define TEXTURE_1D_BIT       (1 << TEXTURE_1D_INDEX)
+/*@}*/
+
+
+/**
+ * TexGenEnabled flags.
+ */
+/*@{*/
+#define S_BIT 1
+#define T_BIT 2
+#define R_BIT 4
+#define Q_BIT 8
+#define STR_BITS (S_BIT | T_BIT | R_BIT)
+/*@}*/
+
+
+/**
+ * Bit flag versions of the corresponding GL_ constants.
+ */
+/*@{*/
+#define TEXGEN_SPHERE_MAP        0x1
+#define TEXGEN_OBJ_LINEAR        0x2
+#define TEXGEN_EYE_LINEAR        0x4
+#define TEXGEN_REFLECTION_MAP_NV 0x8
+#define TEXGEN_NORMAL_MAP_NV     0x10
+
+#define TEXGEN_NEED_NORMALS      (TEXGEN_SPHERE_MAP        | \
+				  TEXGEN_REFLECTION_MAP_NV | \
+				  TEXGEN_NORMAL_MAP_NV)
+#define TEXGEN_NEED_EYE_COORD    (TEXGEN_SPHERE_MAP        | \
+				  TEXGEN_REFLECTION_MAP_NV | \
+				  TEXGEN_NORMAL_MAP_NV     | \
+				  TEXGEN_EYE_LINEAR)
+/*@}*/
+
+
+
+/** Tex-gen enabled for texture unit? */
+#define ENABLE_TEXGEN(unit) (1 << (unit))
+
+/** Non-identity texture matrix for texture unit? */
+#define ENABLE_TEXMAT(unit) (1 << (unit))
+
+
+/**
+ * Texel fetch function prototype.  We use texel fetch functions to
+ * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
+ * texture images.  These functions help to isolate us from the gritty
+ * details of all the various texture image encodings.
+ * 
+ * \param texImage texture image.
+ * \param col texel column.
+ * \param row texel row.
+ * \param img texel image level/layer.
+ * \param texelOut output texel (up to 4 GLchans)
+ */
+typedef void (*FetchTexelFuncC)( const struct gl_texture_image *texImage,
+                                 GLint col, GLint row, GLint img,
+                                 GLchan *texelOut );
+
+/**
+ * As above, but returns floats.
+ * Used for depth component images and for upcoming signed/float
+ * texture images.
+ */
+typedef void (*FetchTexelFuncF)( const struct gl_texture_image *texImage,
+                                 GLint col, GLint row, GLint img,
+                                 GLfloat *texelOut );
+
+
+typedef void (*StoreTexelFunc)(struct gl_texture_image *texImage,
+                               GLint col, GLint row, GLint img,
+                               const void *texel);
+
+
+/**
+ * Texture image state.  Describes the dimensions of a texture image,
+ * the texel format and pointers to Texel Fetch functions.
+ */
+struct gl_texture_image
+{
+   GLint InternalFormat;	/**< Internal format as given by the user */
+   GLenum _BaseFormat;		/**< Either GL_RGB, GL_RGBA, GL_ALPHA,
+				 *   GL_LUMINANCE, GL_LUMINANCE_ALPHA,
+				 *   GL_INTENSITY, GL_COLOR_INDEX,
+				 *   GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
+                                 *   only. Used for choosing TexEnv arithmetic.
+				 */
+   gl_format TexFormat;         /**< The actual texture memory format */
+
+   GLuint Border;		/**< 0 or 1 */
+   GLuint Width;		/**< = 2^WidthLog2 + 2*Border */
+   GLuint Height;		/**< = 2^HeightLog2 + 2*Border */
+   GLuint Depth;		/**< = 2^DepthLog2 + 2*Border */
+   GLuint Width2;		/**< = Width - 2*Border */
+   GLuint Height2;		/**< = Height - 2*Border */
+   GLuint Depth2;		/**< = Depth - 2*Border */
+   GLuint WidthLog2;		/**< = log2(Width2) */
+   GLuint HeightLog2;		/**< = log2(Height2) */
+   GLuint DepthLog2;		/**< = log2(Depth2) */
+   GLuint MaxLog2;		/**< = MAX(WidthLog2, HeightLog2) */
+   GLfloat WidthScale;		/**< used for mipmap LOD computation */
+   GLfloat HeightScale;		/**< used for mipmap LOD computation */
+   GLfloat DepthScale;		/**< used for mipmap LOD computation */
+   GLboolean IsClientData;	/**< Data owned by client? */
+   GLboolean _IsPowerOfTwo;	/**< Are all dimensions powers of two? */
+
+   struct gl_texture_object *TexObject;  /**< Pointer back to parent object */
+
+   FetchTexelFuncC FetchTexelc;	/**< GLchan texel fetch function pointer */
+   FetchTexelFuncF FetchTexelf;	/**< Float texel fetch function pointer */
+
+   GLuint RowStride;		/**< Padded width in units of texels */
+   GLuint *ImageOffsets;        /**< if 3D texture: array [Depth] of offsets to
+                                     each 2D slice in 'Data', in texels */
+   GLvoid *Data;		/**< Image data, accessed via FetchTexel() */
+
+   /**
+    * \name For device driver:
+    */
+   /*@{*/
+   void *DriverData;		/**< Arbitrary device driver data */
+   /*@}*/
+};
+
+
+/**
+ * Indexes for cube map faces.
+ */
+typedef enum
+{
+   FACE_POS_X = 0,
+   FACE_NEG_X = 1,
+   FACE_POS_Y = 2,
+   FACE_NEG_Y = 3,
+   FACE_POS_Z = 4,
+   FACE_NEG_Z = 5,
+   MAX_FACES = 6
+} gl_face_index;
+
+
+/**
+ * Texture object state.  Contains the array of mipmap images, border color,
+ * wrap modes, filter modes, shadow/texcompare state, and the per-texture
+ * color palette.
+ */
+struct gl_texture_object
+{
+   _glthread_Mutex Mutex;	/**< for thread safety */
+   GLint RefCount;		/**< reference count */
+   GLuint Name;			/**< the user-visible texture object ID */
+   GLenum Target;               /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
+   GLfloat Priority;		/**< in [0,1] */
+   union {
+      GLfloat f[4];
+      GLuint ui[4];
+      GLint i[4];
+   } BorderColor;               /**< Interpreted according to texture format */
+   GLenum WrapS;		/**< S-axis texture image wrap mode */
+   GLenum WrapT;		/**< T-axis texture image wrap mode */
+   GLenum WrapR;		/**< R-axis texture image wrap mode */
+   GLenum MinFilter;		/**< minification filter */
+   GLenum MagFilter;		/**< magnification filter */
+   GLfloat MinLod;		/**< min lambda, OpenGL 1.2 */
+   GLfloat MaxLod;		/**< max lambda, OpenGL 1.2 */
+   GLfloat LodBias;		/**< OpenGL 1.4 */
+   GLint BaseLevel;		/**< min mipmap level, OpenGL 1.2 */
+   GLint MaxLevel;		/**< max mipmap level, OpenGL 1.2 */
+   GLfloat MaxAnisotropy;	/**< GL_EXT_texture_filter_anisotropic */
+   GLenum CompareMode;		/**< GL_ARB_shadow */
+   GLenum CompareFunc;		/**< GL_ARB_shadow */
+   GLfloat CompareFailValue;    /**< GL_ARB_shadow_ambient */
+   GLenum DepthMode;		/**< GL_ARB_depth_texture */
+   GLint _MaxLevel;		/**< actual max mipmap level (q in the spec) */
+   GLfloat _MaxLambda;		/**< = _MaxLevel - BaseLevel (q - b in spec) */
+   GLint CropRect[4];           /**< GL_OES_draw_texture */
+   GLenum Swizzle[4];           /**< GL_EXT_texture_swizzle */
+   GLuint _Swizzle;             /**< same as Swizzle, but SWIZZLE_* format */
+   GLboolean GenerateMipmap;    /**< GL_SGIS_generate_mipmap */
+   GLboolean _Complete;		/**< Is texture object complete? */
+   GLboolean _RenderToTexture;  /**< Any rendering to this texture? */
+   GLboolean Purgeable;         /**< Is the buffer purgeable under memory pressure? */
+   GLenum sRGBDecode;           /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
+
+   /** Actual texture images, indexed by [cube face] and [mipmap level] */
+   struct gl_texture_image *Image[MAX_FACES][MAX_TEXTURE_LEVELS];
+
+   /** GL_EXT_paletted_texture */
+   struct gl_color_table Palette;
+
+   /**
+    * \name For device driver.
+    * Note: instead of attaching driver data to this pointer, it's preferable
+    * to instead use this struct as a base class for your own texture object
+    * class.  Driver->NewTextureObject() can be used to implement the
+    * allocation.
+    */
+   void *DriverData;	/**< Arbitrary device driver data */
+};
+
+
+/** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
+#define MAX_COMBINER_TERMS 4
+
+
+/**
+ * Texture combine environment state.
+ */
+struct gl_tex_env_combine_state
+{
+   GLenum ModeRGB;       /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
+   GLenum ModeA;         /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
+   /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
+   GLenum SourceRGB[MAX_COMBINER_TERMS];
+   GLenum SourceA[MAX_COMBINER_TERMS];
+   /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
+   GLenum OperandRGB[MAX_COMBINER_TERMS];
+   GLenum OperandA[MAX_COMBINER_TERMS];
+   GLuint ScaleShiftRGB; /**< 0, 1 or 2 */
+   GLuint ScaleShiftA;   /**< 0, 1 or 2 */
+   GLuint _NumArgsRGB;   /**< Number of inputs used for the RGB combiner */
+   GLuint _NumArgsA;     /**< Number of inputs used for the A combiner */
+};
+
+
+/**
+ * Texture coord generation state.
+ */
+struct gl_texgen
+{
+   GLenum Mode;         /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
+   GLbitfield _ModeBit; /**< TEXGEN_x bit corresponding to Mode */
+   GLfloat ObjectPlane[4];
+   GLfloat EyePlane[4];
+};
+
+
+/**
+ * Texture unit state.  Contains enable flags, texture environment/function/
+ * combiners, texgen state, pointers to current texture objects and
+ * post-filter color tables.
+ */
+struct gl_texture_unit
+{
+   GLbitfield Enabled;          /**< bitmask of TEXTURE_*_BIT flags */
+   GLbitfield _ReallyEnabled;   /**< 0 or exactly one of TEXTURE_*_BIT flags */
+
+   GLenum EnvMode;              /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
+   GLfloat EnvColor[4];
+
+   struct gl_texgen GenS;
+   struct gl_texgen GenT;
+   struct gl_texgen GenR;
+   struct gl_texgen GenQ;
+   GLbitfield TexGenEnabled;	/**< Bitwise-OR of [STRQ]_BIT values */
+   GLbitfield _GenFlags;	/**< Bitwise-OR of Gen[STRQ]._ModeBit */
+
+   GLfloat LodBias;		/**< for biasing mipmap levels */
+   GLenum BumpTarget;
+   GLfloat RotMatrix[4]; /* 2x2 matrix */
+
+   /** 
+    * \name GL_EXT_texture_env_combine 
+    */
+   struct gl_tex_env_combine_state Combine;
+
+   /**
+    * Derived state based on \c EnvMode and the \c BaseFormat of the
+    * currently enabled texture.
+    */
+   struct gl_tex_env_combine_state _EnvMode;
+
+   /**
+    * Currently enabled combiner state.  This will point to either
+    * \c Combine or \c _EnvMode.
+    */
+   struct gl_tex_env_combine_state *_CurrentCombine;
+
+   /** Current texture object pointers */
+   struct gl_texture_object *CurrentTex[NUM_TEXTURE_TARGETS];
+
+   /** Points to highest priority, complete and enabled texture object */
+   struct gl_texture_object *_Current;
+};
+
+
+/**
+ * Texture attribute group (GL_TEXTURE_BIT).
+ */
+struct gl_texture_attrib
+{
+   GLuint CurrentUnit;   /**< GL_ACTIVE_TEXTURE */
+   struct gl_texture_unit Unit[MAX_COMBINED_TEXTURE_IMAGE_UNITS];
+
+   struct gl_texture_object *ProxyTex[NUM_TEXTURE_TARGETS];
+
+   /** GL_ARB_seamless_cubemap */
+   GLboolean CubeMapSeamless;
+
+   /** GL_EXT_shared_texture_palette */
+   GLboolean SharedPalette;
+   struct gl_color_table Palette;
+
+   /** Texture units/samplers used by vertex or fragment texturing */
+   GLbitfield _EnabledUnits;
+
+   /** Texture coord units/sets used for fragment texturing */
+   GLbitfield _EnabledCoordUnits;
+
+   /** Texture coord units that have texgen enabled */
+   GLbitfield _TexGenEnabled;
+
+   /** Texture coord units that have non-identity matrices */
+   GLbitfield _TexMatEnabled;
+
+   /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
+   GLbitfield _GenFlags;
+};
+
+
+/**
+ * Transformation attribute group (GL_TRANSFORM_BIT).
+ */
+struct gl_transform_attrib
+{
+   GLenum MatrixMode;				/**< Matrix mode */
+   GLfloat EyeUserPlane[MAX_CLIP_PLANES][4];	/**< User clip planes */
+   GLfloat _ClipUserPlane[MAX_CLIP_PLANES][4];	/**< derived */
+   GLbitfield ClipPlanesEnabled;                /**< on/off bitmask */
+   GLboolean Normalize;				/**< Normalize all normals? */
+   GLboolean RescaleNormals;			/**< GL_EXT_rescale_normal */
+   GLboolean RasterPositionUnclipped;           /**< GL_IBM_rasterpos_clip */
+   GLboolean DepthClamp;			/**< GL_ARB_depth_clamp */
+
+   GLfloat CullEyePos[4];
+   GLfloat CullObjPos[4];
+};
+
+
+/**
+ * Viewport attribute group (GL_VIEWPORT_BIT).
+ */
+struct gl_viewport_attrib
+{
+   GLint X, Y;			/**< position */
+   GLsizei Width, Height;	/**< size */
+   GLfloat Near, Far;		/**< Depth buffer range */
+   GLmatrix _WindowMap;		/**< Mapping transformation as a matrix. */
+};
+
+
+/**
+ * GL_ARB_vertex/pixel_buffer_object buffer object
+ */
+struct gl_buffer_object
+{
+   _glthread_Mutex Mutex;
+   GLint RefCount;
+   GLuint Name;
+   GLenum Usage;        /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
+   GLsizeiptrARB Size;  /**< Size of buffer storage in bytes */
+   GLubyte *Data;       /**< Location of storage either in RAM or VRAM. */
+   /** Fields describing a mapped buffer */
+   /*@{*/
+   GLbitfield AccessFlags; /**< Mask of GL_MAP_x_BIT flags */
+   GLvoid *Pointer;     /**< User-space address of mapping */
+   GLintptr Offset;     /**< Mapped offset */
+   GLsizeiptr Length;   /**< Mapped length */
+   /*@}*/
+   GLboolean Written;   /**< Ever written to? (for debugging) */
+   GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
+};
+
+
+/**
+ * Client pixel packing/unpacking attributes
+ */
+struct gl_pixelstore_attrib
+{
+   GLint Alignment;
+   GLint RowLength;
+   GLint SkipPixels;
+   GLint SkipRows;
+   GLint ImageHeight;
+   GLint SkipImages;
+   GLboolean SwapBytes;
+   GLboolean LsbFirst;
+   GLboolean ClientStorage; /**< GL_APPLE_client_storage */
+   GLboolean Invert;        /**< GL_MESA_pack_invert */
+   struct gl_buffer_object *BufferObj; /**< GL_ARB_pixel_buffer_object */
+};
+
+
+/**
+ * Client vertex array attributes
+ */
+struct gl_client_array
+{
+   GLint Size;                  /**< components per element (1,2,3,4) */
+   GLenum Type;                 /**< datatype: GL_FLOAT, GL_INT, etc */
+   GLenum Format;               /**< default: GL_RGBA, but may be GL_BGRA */
+   GLsizei Stride;		/**< user-specified stride */
+   GLsizei StrideB;		/**< actual stride in bytes */
+   const GLubyte *Ptr;          /**< Points to array data */
+   GLboolean Enabled;		/**< Enabled flag is a boolean */
+   GLboolean Normalized;        /**< GL_ARB_vertex_program */
+   GLboolean Integer;           /**< Integer-valued? */
+   GLuint InstanceDivisor;      /**< GL_ARB_instanced_arrays */
+   GLuint _ElementSize;         /**< size of each element in bytes */
+
+   struct gl_buffer_object *BufferObj;/**< GL_ARB_vertex_buffer_object */
+   GLuint _MaxElement;          /**< max element index into array buffer + 1 */
+};
+
+
+/**
+ * Collection of vertex arrays.  Defined by the GL_APPLE_vertex_array_object
+ * extension, but a nice encapsulation in any case.
+ */
+struct gl_array_object
+{
+   /** Name of the array object as received from glGenVertexArrayAPPLE. */
+   GLuint Name;
+
+   GLint RefCount;
+   _glthread_Mutex Mutex;
+   GLboolean VBOonly;  /**< require all arrays to live in VBOs? */
+
+   /** Conventional vertex arrays */
+   /*@{*/
+   struct gl_client_array Vertex;
+   struct gl_client_array Weight;
+   struct gl_client_array Normal;
+   struct gl_client_array Color;
+   struct gl_client_array SecondaryColor;
+   struct gl_client_array FogCoord;
+   struct gl_client_array Index;
+   struct gl_client_array EdgeFlag;
+   struct gl_client_array TexCoord[MAX_TEXTURE_COORD_UNITS];
+   struct gl_client_array PointSize;
+   /*@}*/
+
+   /**
+    * Generic arrays for vertex programs/shaders.
+    * For NV vertex programs, these attributes alias and take priority
+    * over the conventional attribs above.  For ARB vertex programs and
+    * GLSL vertex shaders, these attributes are separate.
+    */
+   struct gl_client_array VertexAttrib[MAX_VERTEX_GENERIC_ATTRIBS];
+
+   /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
+   GLbitfield _Enabled;
+
+   /**
+    * Min of all enabled arrays' _MaxElement.  When arrays reside inside VBOs
+    * we can determine the max legal (in bounds) glDrawElements array index.
+    */
+   GLuint _MaxElement;
+};
+
+
+/**
+ * Vertex array state
+ */
+struct gl_array_attrib
+{
+   /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
+   struct gl_array_object *ArrayObj;
+
+   /** The default vertex array object */
+   struct gl_array_object *DefaultArrayObj;
+
+   /** Array objects (GL_ARB/APPLE_vertex_array_object) */
+   struct _mesa_HashTable *Objects;
+
+   GLint ActiveTexture;		/**< Client Active Texture */
+   GLuint LockFirst;            /**< GL_EXT_compiled_vertex_array */
+   GLuint LockCount;            /**< GL_EXT_compiled_vertex_array */
+
+   /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
+   GLboolean PrimitiveRestart;
+   GLuint RestartIndex;
+
+   GLbitfield NewState;		/**< mask of _NEW_ARRAY_* values */
+   GLboolean RebindArrays; /**< whether the VBO module should rebind arrays */
+
+   /* GL_ARB_vertex_buffer_object */
+   struct gl_buffer_object *ArrayBufferObj;
+   struct gl_buffer_object *ElementArrayBufferObj;
+};
+
+
+/**
+ * Feedback buffer state
+ */
+struct gl_feedback
+{
+   GLenum Type;
+   GLbitfield _Mask;    /**< FB_* bits */
+   GLfloat *Buffer;
+   GLuint BufferSize;
+   GLuint Count;
+};
+
+
+/**
+ * Selection buffer state
+ */
+struct gl_selection
+{
+   GLuint *Buffer;	/**< selection buffer */
+   GLuint BufferSize;	/**< size of the selection buffer */
+   GLuint BufferCount;	/**< number of values in the selection buffer */
+   GLuint Hits;		/**< number of records in the selection buffer */
+   GLuint NameStackDepth; /**< name stack depth */
+   GLuint NameStack[MAX_NAME_STACK_DEPTH]; /**< name stack */
+   GLboolean HitFlag;	/**< hit flag */
+   GLfloat HitMinZ;	/**< minimum hit depth */
+   GLfloat HitMaxZ;	/**< maximum hit depth */
+};
+
+
+/**
+ * 1-D Evaluator control points
+ */
+struct gl_1d_map
+{
+   GLuint Order;	/**< Number of control points */
+   GLfloat u1, u2, du;	/**< u1, u2, 1.0/(u2-u1) */
+   GLfloat *Points;	/**< Points to contiguous control points */
+};
+
+
+/**
+ * 2-D Evaluator control points
+ */
+struct gl_2d_map
+{
+   GLuint Uorder;		/**< Number of control points in U dimension */
+   GLuint Vorder;		/**< Number of control points in V dimension */
+   GLfloat u1, u2, du;
+   GLfloat v1, v2, dv;
+   GLfloat *Points;		/**< Points to contiguous control points */
+};
+
+
+/**
+ * All evaluator control point state
+ */
+struct gl_evaluators
+{
+   /** 
+    * \name 1-D maps
+    */
+   /*@{*/
+   struct gl_1d_map Map1Vertex3;
+   struct gl_1d_map Map1Vertex4;
+   struct gl_1d_map Map1Index;
+   struct gl_1d_map Map1Color4;
+   struct gl_1d_map Map1Normal;
+   struct gl_1d_map Map1Texture1;
+   struct gl_1d_map Map1Texture2;
+   struct gl_1d_map Map1Texture3;
+   struct gl_1d_map Map1Texture4;
+   struct gl_1d_map Map1Attrib[16];  /**< GL_NV_vertex_program */
+   /*@}*/
+
+   /** 
+    * \name 2-D maps 
+    */
+   /*@{*/
+   struct gl_2d_map Map2Vertex3;
+   struct gl_2d_map Map2Vertex4;
+   struct gl_2d_map Map2Index;
+   struct gl_2d_map Map2Color4;
+   struct gl_2d_map Map2Normal;
+   struct gl_2d_map Map2Texture1;
+   struct gl_2d_map Map2Texture2;
+   struct gl_2d_map Map2Texture3;
+   struct gl_2d_map Map2Texture4;
+   struct gl_2d_map Map2Attrib[16];  /**< GL_NV_vertex_program */
+   /*@}*/
+};
+
+
+/**
+ * Names of the various vertex/fragment program register files, etc.
+ *
+ * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
+ * All values should fit in a 4-bit field.
+ *
+ * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
+ * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
+ * be "uniform" variables since they can only be set outside glBegin/End.
+ * They're also all stored in the same Parameters array.
+ */
+typedef enum
+{
+   PROGRAM_TEMPORARY,   /**< machine->Temporary[] */
+   PROGRAM_INPUT,       /**< machine->Inputs[] */
+   PROGRAM_OUTPUT,      /**< machine->Outputs[] */
+   PROGRAM_VARYING,     /**< machine->Inputs[]/Outputs[] */
+   PROGRAM_LOCAL_PARAM, /**< gl_program->LocalParams[] */
+   PROGRAM_ENV_PARAM,   /**< gl_program->Parameters[] */
+   PROGRAM_STATE_VAR,   /**< gl_program->Parameters[] */
+   PROGRAM_NAMED_PARAM, /**< gl_program->Parameters[] */
+   PROGRAM_CONSTANT,    /**< gl_program->Parameters[] */
+   PROGRAM_UNIFORM,     /**< gl_program->Parameters[] */
+   PROGRAM_WRITE_ONLY,  /**< A dummy, write-only register */
+   PROGRAM_ADDRESS,     /**< machine->AddressReg */
+   PROGRAM_SAMPLER,     /**< for shader samplers, compile-time only */
+   PROGRAM_SYSTEM_VALUE,/**< InstanceId, PrimitiveID, etc. */
+   PROGRAM_UNDEFINED,   /**< Invalid/TBD value */
+   PROGRAM_FILE_MAX
+} gl_register_file;
+
+
+/**
+ * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
+ * one of these values.
+ */
+typedef enum
+{
+   SYSTEM_VALUE_FRONT_FACE,  /**< Fragment shader only (not done yet) */
+   SYSTEM_VALUE_INSTANCE_ID, /**< Vertex shader only */
+   SYSTEM_VALUE_MAX          /**< Number of values */
+} gl_system_value;
+
+
+/** Vertex and fragment instructions */
+struct prog_instruction;
+struct gl_program_parameter_list;
+struct gl_uniform_list;
+
+
+/**
+ * Base class for any kind of program object
+ */
+struct gl_program
+{
+   GLuint Id;
+   GLubyte *String;  /**< Null-terminated program text */
+   GLint RefCount;
+   GLenum Target;    /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
+   GLenum Format;    /**< String encoding format */
+   GLboolean Resident;
+
+   struct prog_instruction *Instructions;
+
+   GLbitfield InputsRead;     /**< Bitmask of which input regs are read */
+   GLbitfield64 OutputsWritten; /**< Bitmask of which output regs are written */
+   GLbitfield SystemValuesRead;   /**< Bitmask of SYSTEM_VALUE_x inputs used */
+   GLbitfield InputFlags[MAX_PROGRAM_INPUTS];   /**< PROG_PARAM_BIT_x flags */
+   GLbitfield OutputFlags[MAX_PROGRAM_OUTPUTS]; /**< PROG_PARAM_BIT_x flags */
+   GLbitfield TexturesUsed[MAX_TEXTURE_UNITS];  /**< TEXTURE_x_BIT bitmask */
+   GLbitfield SamplersUsed;   /**< Bitfield of which samplers are used */
+   GLbitfield ShadowSamplers; /**< Texture units used for shadow sampling. */
+
+
+   /** Named parameters, constants, etc. from program text */
+   struct gl_program_parameter_list *Parameters;
+   /** Numbered local parameters */
+   GLfloat LocalParams[MAX_PROGRAM_LOCAL_PARAMS][4];
+
+   /** Vertex/fragment shader varying vars */
+   struct gl_program_parameter_list *Varying;
+   /** Vertex program user-defined attributes */
+   struct gl_program_parameter_list *Attributes;
+
+   /** Map from sampler unit to texture unit (set by glUniform1i()) */
+   GLubyte SamplerUnits[MAX_SAMPLERS];
+   /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
+   gl_texture_index SamplerTargets[MAX_SAMPLERS];
+
+   /** Bitmask of which register files are read/written with indirect
+    * addressing.  Mask of (1 << PROGRAM_x) bits.
+    */
+   GLbitfield IndirectRegisterFiles;
+
+   /** Logical counts */
+   /*@{*/
+   GLuint NumInstructions;
+   GLuint NumTemporaries;
+   GLuint NumParameters;
+   GLuint NumAttributes;
+   GLuint NumAddressRegs;
+   GLuint NumAluInstructions;
+   GLuint NumTexInstructions;
+   GLuint NumTexIndirections;
+   /*@}*/
+   /** Native, actual h/w counts */
+   /*@{*/
+   GLuint NumNativeInstructions;
+   GLuint NumNativeTemporaries;
+   GLuint NumNativeParameters;
+   GLuint NumNativeAttributes;
+   GLuint NumNativeAddressRegs;
+   GLuint NumNativeAluInstructions;
+   GLuint NumNativeTexInstructions;
+   GLuint NumNativeTexIndirections;
+   /*@}*/
+};
+
+
+/** Vertex program object */
+struct gl_vertex_program
+{
+   struct gl_program Base;   /**< base class */
+   GLboolean IsNVProgram;    /**< is this a GL_NV_vertex_program program? */
+   GLboolean IsPositionInvariant;
+};
+
+
+/** Geometry program object */
+struct gl_geometry_program
+{
+   struct gl_program Base;   /**< base class */
+
+   GLint VerticesOut;
+   GLenum InputType;  /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
+                           GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
+   GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
+};
+
+
+/** Fragment program object */
+struct gl_fragment_program
+{
+   struct gl_program Base;   /**< base class */
+   GLenum FogOption;
+   GLboolean UsesKill;          /**< shader uses KIL instruction */
+   GLboolean OriginUpperLeft;
+   GLboolean PixelCenterInteger;
+   enum gl_frag_depth_layout FragDepthLayout;
+};
+
+
+/**
+ * State common to vertex and fragment programs.
+ */
+struct gl_program_state
+{
+   GLint ErrorPos;                       /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
+   const char *ErrorString;              /* GL_PROGRAM_ERROR_STRING_ARB/NV */
+};
+
+
+/**
+ * Context state for vertex programs.
+ */
+struct gl_vertex_program_state
+{
+   GLboolean Enabled;            /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
+   GLboolean _Enabled;           /**< Enabled and _valid_ user program? */
+   GLboolean PointSizeEnabled;   /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
+   GLboolean TwoSideEnabled;     /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
+   struct gl_vertex_program *Current;  /**< User-bound vertex program */
+
+   /** Currently enabled and valid vertex program (including internal
+    * programs, user-defined vertex programs and GLSL vertex shaders).
+    * This is the program we must use when rendering.
+    */
+   struct gl_vertex_program *_Current;
+
+   GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
+
+   /* For GL_NV_vertex_program only: */
+   GLenum TrackMatrix[MAX_PROGRAM_ENV_PARAMS / 4];
+   GLenum TrackMatrixTransform[MAX_PROGRAM_ENV_PARAMS / 4];
+
+   /** Should fixed-function T&L be implemented with a vertex prog? */
+   GLboolean _MaintainTnlProgram;
+
+   /** Program to emulate fixed-function T&L (see above) */
+   struct gl_vertex_program *_TnlProgram;
+
+   /** Cache of fixed-function programs */
+   struct gl_program_cache *Cache;
+
+   GLboolean _Overriden;
+};
+
+
+/**
+ * Context state for geometry programs.
+ */
+struct gl_geometry_program_state
+{
+   GLboolean Enabled;               /**< GL_ARB_GEOMETRY_SHADER4 */
+   GLboolean _Enabled;              /**< Enabled and valid program? */
+   struct gl_geometry_program *Current;  /**< user-bound geometry program */
+
+   /** Currently enabled and valid program (including internal programs
+    * and compiled shader programs).
+    */
+   struct gl_geometry_program *_Current;
+
+   GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
+
+   /** Cache of fixed-function programs */
+   struct gl_program_cache *Cache;
+};
+
+/**
+ * Context state for fragment programs.
+ */
+struct gl_fragment_program_state
+{
+   GLboolean Enabled;     /**< User-set fragment program enable flag */
+   GLboolean _Enabled;    /**< Enabled and _valid_ user program? */
+   struct gl_fragment_program *Current;  /**< User-bound fragment program */
+
+   /** Currently enabled and valid fragment program (including internal
+    * programs, user-defined fragment programs and GLSL fragment shaders).
+    * This is the program we must use when rendering.
+    */
+   struct gl_fragment_program *_Current;
+
+   GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
+
+   /** Should fixed-function texturing be implemented with a fragment prog? */
+   GLboolean _MaintainTexEnvProgram;
+
+   /** Program to emulate fixed-function texture env/combine (see above) */
+   struct gl_fragment_program *_TexEnvProgram;
+
+   /** Cache of fixed-function programs */
+   struct gl_program_cache *Cache;
+};
+
+
+/**
+ * ATI_fragment_shader runtime state
+ */
+#define ATI_FS_INPUT_PRIMARY 0
+#define ATI_FS_INPUT_SECONDARY 1
+
+struct atifs_instruction;
+struct atifs_setupinst;
+
+/**
+ * ATI fragment shader
+ */
+struct ati_fragment_shader
+{
+   GLuint Id;
+   GLint RefCount;
+   struct atifs_instruction *Instructions[2];
+   struct atifs_setupinst *SetupInst[2];
+   GLfloat Constants[8][4];
+   GLbitfield LocalConstDef;  /**< Indicates which constants have been set */
+   GLubyte numArithInstr[2];
+   GLubyte regsAssigned[2];
+   GLubyte NumPasses;         /**< 1 or 2 */
+   GLubyte cur_pass;
+   GLubyte last_optype;
+   GLboolean interpinp1;
+   GLboolean isValid;
+   GLuint swizzlerq;
+};
+
+/**
+ * Context state for GL_ATI_fragment_shader
+ */
+struct gl_ati_fragment_shader_state
+{
+   GLboolean Enabled;
+   GLboolean _Enabled;                  /**< enabled and valid shader? */
+   GLboolean Compiling;
+   GLfloat GlobalConstants[8][4];
+   struct ati_fragment_shader *Current;
+};
+
+
+/**
+ * Occlusion/timer query object.
+ */
+struct gl_query_object
+{
+   GLenum Target;      /**< The query target, when active */
+   GLuint Id;          /**< hash table ID/name */
+   GLuint64EXT Result; /**< the counter */
+   GLboolean Active;   /**< inside Begin/EndQuery */
+   GLboolean Ready;    /**< result is ready? */
+};
+
+
+/**
+ * Context state for query objects.
+ */
+struct gl_query_state
+{
+   struct _mesa_HashTable *QueryObjects;
+   struct gl_query_object *CurrentOcclusionObject; /* GL_ARB_occlusion_query */
+   struct gl_query_object *CurrentTimerObject;     /* GL_EXT_timer_query */
+
+   /** GL_NV_conditional_render */
+   struct gl_query_object *CondRenderQuery;
+
+   /** GL_EXT_transform_feedback */
+   struct gl_query_object *PrimitivesGenerated;
+   struct gl_query_object *PrimitivesWritten;
+
+   /** GL_ARB_timer_query */
+   struct gl_query_object *TimeElapsed;
+
+   GLenum CondRenderMode;
+};
+
+
+/** Sync object state */
+struct gl_sync_object {
+   struct simple_node link;
+   GLenum Type;               /**< GL_SYNC_FENCE */
+   GLuint Name;               /**< Fence name */
+   GLint RefCount;            /**< Reference count */
+   GLboolean DeletePending;   /**< Object was deleted while there were still
+			       * live references (e.g., sync not yet finished)
+			       */
+   GLenum SyncCondition;
+   GLbitfield Flags;          /**< Flags passed to glFenceSync */
+   GLuint StatusFlag:1;       /**< Has the sync object been signaled? */
+};
+
+
+/** Set by #pragma directives */
+struct gl_sl_pragmas
+{
+   GLboolean IgnoreOptimize;  /**< ignore #pragma optimize(on/off) ? */
+   GLboolean IgnoreDebug;     /**< ignore #pragma debug(on/off) ? */
+   GLboolean Optimize;  /**< defaults on */
+   GLboolean Debug;     /**< defaults off */
+};
+
+
+/**
+ * A GLSL vertex or fragment shader object.
+ */
+struct gl_shader
+{
+   GLenum Type;  /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
+   GLuint Name;  /**< AKA the handle */
+   GLint RefCount;  /**< Reference count */
+   GLboolean DeletePending;
+   GLboolean CompileStatus;
+   const GLchar *Source;  /**< Source code string */
+   GLuint SourceChecksum;       /**< for debug/logging purposes */
+   struct gl_program *Program;  /**< Post-compile assembly code */
+   GLchar *InfoLog;
+   struct gl_sl_pragmas Pragmas;
+
+   unsigned Version;       /**< GLSL version used for linking */
+
+   struct exec_list *ir;
+   struct glsl_symbol_table *symbols;
+
+   /** Shaders containing built-in functions that are used for linking. */
+   struct gl_shader *builtins_to_link[16];
+   unsigned num_builtins_to_link;
+};
+
+
+/**
+ * A GLSL program object.
+ * Basically a linked collection of vertex and fragment shaders.
+ */
+struct gl_shader_program
+{
+   GLenum Type;  /**< Always GL_SHADER_PROGRAM (internal token) */
+   GLuint Name;  /**< aka handle or ID */
+   GLint RefCount;  /**< Reference count */
+   GLboolean DeletePending;
+
+   GLuint NumShaders;          /**< number of attached shaders */
+   struct gl_shader **Shaders; /**< List of attached the shaders */
+
+   /** User-defined attribute bindings (glBindAttribLocation) */
+   struct gl_program_parameter_list *Attributes;
+
+   /** Transform feedback varyings */
+   struct {
+      GLenum BufferMode;
+      GLuint NumVarying;
+      GLchar **VaryingNames;  /**< Array [NumVarying] of char * */
+   } TransformFeedback;
+
+   /** Geometry shader state - copied into gl_geometry_program at link time */
+   struct {
+      GLint VerticesOut;
+      GLenum InputType;  /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
+                              GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
+      GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
+   } Geom;
+
+   /* post-link info: */
+   struct gl_vertex_program *VertexProgram;     /**< Linked vertex program */
+   struct gl_fragment_program *FragmentProgram; /**< Linked fragment prog */
+   struct gl_geometry_program *GeometryProgram; /**< Linked geometry prog */
+   struct gl_uniform_list *Uniforms;
+   struct gl_program_parameter_list *Varying;
+   GLboolean LinkStatus;   /**< GL_LINK_STATUS */
+   GLboolean Validated;
+   GLboolean _Used;        /**< Ever used for drawing? */
+   GLchar *InfoLog;
+
+   unsigned Version;       /**< GLSL version used for linking */
+
+   /**
+    * Per-stage shaders resulting from the first stage of linking.
+    *
+    * Set of linked shaders for this program.  The array is accessed using the
+    * \c MESA_SHADER_* defines.  Entries for non-existent stages will be
+    * \c NULL.
+    */
+   struct gl_shader *_LinkedShaders[MESA_SHADER_TYPES];
+};   
+
+
+#define GLSL_DUMP      0x1  /**< Dump shaders to stdout */
+#define GLSL_LOG       0x2  /**< Write shaders to files */
+#define GLSL_OPT       0x4  /**< Force optimizations (override pragmas) */
+#define GLSL_NO_OPT    0x8  /**< Force no optimizations (override pragmas) */
+#define GLSL_UNIFORMS 0x10  /**< Print glUniform calls */
+#define GLSL_NOP_VERT 0x20  /**< Force no-op vertex shaders */
+#define GLSL_NOP_FRAG 0x40  /**< Force no-op fragment shaders */
+#define GLSL_USE_PROG 0x80  /**< Log glUseProgram calls */
+
+
+/**
+ * Context state for GLSL vertex/fragment shaders.
+ */
+struct gl_shader_state
+{
+   /**
+    * Programs used for rendering
+    *
+    * There is a separate program set for each shader stage.  If
+    * GL_EXT_separate_shader_objects is not supported, each of these must point
+    * to \c NULL or to the same program.
+    */
+   struct gl_shader_program *CurrentVertexProgram;
+   struct gl_shader_program *CurrentGeometryProgram;
+   struct gl_shader_program *CurrentFragmentProgram;
+
+   /**
+    * Program used by glUniform calls.
+    *
+    * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
+    */
+   struct gl_shader_program *ActiveProgram;
+
+   void *MemPool;
+
+   GLbitfield Flags;                    /**< Mask of GLSL_x flags */
+};
+
+/**
+ * Compiler options for a single GLSL shaders type
+ */
+struct gl_shader_compiler_options
+{
+   /** Driver-selectable options: */
+   GLboolean EmitCondCodes;             /**< Use condition codes? */
+   GLboolean EmitNVTempInitialization;  /**< 0-fill NV temp registers */
+   /**
+    * Attempts to flatten all ir_if (OPCODE_IF) for GPUs that can't
+    * support control flow.
+    */
+   GLboolean EmitNoIfs;
+   GLboolean EmitNoLoops;
+   GLboolean EmitNoFunctions;
+   GLboolean EmitNoCont;                  /**< Emit CONT opcode? */
+   GLboolean EmitNoMainReturn;            /**< Emit CONT/RET opcodes? */
+   GLboolean EmitNoNoise;                 /**< Emit NOISE opcodes? */
+   GLboolean EmitNoPow;                   /**< Emit POW opcodes? */
+
+   /**
+    * \name Forms of indirect addressing the driver cannot do.
+    */
+   /*@{*/
+   GLboolean EmitNoIndirectInput;   /**< No indirect addressing of inputs */
+   GLboolean EmitNoIndirectOutput;  /**< No indirect addressing of outputs */
+   GLboolean EmitNoIndirectTemp;    /**< No indirect addressing of temps */
+   GLboolean EmitNoIndirectUniform; /**< No indirect addressing of constants */
+   /*@}*/
+
+   GLuint MaxUnrollIterations;
+
+   struct gl_sl_pragmas DefaultPragmas; /**< Default #pragma settings */
+};
+
+/**
+ * Transform feedback object state
+ */
+struct gl_transform_feedback_object
+{
+   GLuint Name;  /**< AKA the object ID */
+   GLint RefCount;
+   GLboolean Active;  /**< Is transform feedback enabled? */
+   GLboolean Paused;  /**< Is transform feedback paused? */
+
+   /** The feedback buffers */
+   GLuint BufferNames[MAX_FEEDBACK_ATTRIBS];
+   struct gl_buffer_object *Buffers[MAX_FEEDBACK_ATTRIBS];
+
+   /** Start of feedback data in dest buffer */
+   GLintptr Offset[MAX_FEEDBACK_ATTRIBS];
+   /** Max data to put into dest buffer (in bytes) */
+   GLsizeiptr Size[MAX_FEEDBACK_ATTRIBS];
+};
+
+
+/**
+ * Context state for transform feedback.
+ */
+struct gl_transform_feedback
+{
+   GLenum Mode;       /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
+
+   GLboolean RasterDiscard;  /**< GL_RASTERIZER_DISCARD */
+
+   /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
+   struct gl_buffer_object *CurrentBuffer;
+
+   /** The table of all transform feedback objects */
+   struct _mesa_HashTable *Objects;
+
+   /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
+   struct gl_transform_feedback_object *CurrentObject;
+
+   /** The default xform-fb object (Name==0) */
+   struct gl_transform_feedback_object *DefaultObject;
+};
+
+
+
+/**
+ * State which can be shared by multiple contexts:
+ */
+struct gl_shared_state
+{
+   _glthread_Mutex Mutex;		   /**< for thread safety */
+   GLint RefCount;			   /**< Reference count */
+   struct _mesa_HashTable *DisplayList;	   /**< Display lists hash table */
+   struct _mesa_HashTable *TexObjects;	   /**< Texture objects hash table */
+
+   /** Default texture objects (shared by all texture units) */
+   struct gl_texture_object *DefaultTex[NUM_TEXTURE_TARGETS];
+
+   /** Fallback texture used when a bound texture is incomplete */
+   struct gl_texture_object *FallbackTex;
+
+   /**
+    * \name Thread safety and statechange notification for texture
+    * objects. 
+    *
+    * \todo Improve the granularity of locking.
+    */
+   /*@{*/
+   _glthread_Mutex TexMutex;		/**< texobj thread safety */
+   GLuint TextureStateStamp;	        /**< state notification for shared tex */
+   /*@}*/
+
+   /** Default buffer object for vertex arrays that aren't in VBOs */
+   struct gl_buffer_object *NullBufferObj;
+
+   /**
+    * \name Vertex/geometry/fragment programs
+    */
+   /*@{*/
+   struct _mesa_HashTable *Programs; /**< All vertex/fragment programs */
+   struct gl_vertex_program *DefaultVertexProgram;
+   struct gl_fragment_program *DefaultFragmentProgram;
+   struct gl_geometry_program *DefaultGeometryProgram;
+   /*@}*/
+
+   /* GL_ATI_fragment_shader */
+   struct _mesa_HashTable *ATIShaders;
+   struct ati_fragment_shader *DefaultFragmentShader;
+
+   struct _mesa_HashTable *BufferObjects;
+
+   /** Table of both gl_shader and gl_shader_program objects */
+   struct _mesa_HashTable *ShaderObjects;
+
+   /* GL_EXT_framebuffer_object */
+   struct _mesa_HashTable *RenderBuffers;
+   struct _mesa_HashTable *FrameBuffers;
+
+   /* GL_ARB_sync */
+   struct simple_node SyncObjects;
+
+   void *DriverData;  /**< Device driver shared state */
+};
+
+
+
+
+/**
+ * A renderbuffer stores colors or depth values or stencil values.
+ * A framebuffer object will have a collection of these.
+ * Data are read/written to the buffer with a handful of Get/Put functions.
+ *
+ * Instances of this object are allocated with the Driver's NewRenderbuffer
+ * hook.  Drivers will likely wrap this class inside a driver-specific
+ * class to simulate inheritance.
+ */
+struct gl_renderbuffer
+{
+#define RB_MAGIC 0xaabbccdd
+   int Magic; /** XXX TEMPORARY DEBUG INFO */
+   _glthread_Mutex Mutex;		   /**< for thread safety */
+   GLuint ClassID;        /**< Useful for drivers */
+   GLuint Name;
+   GLint RefCount;
+   GLuint Width, Height;
+   GLboolean Purgeable;   /**< Is the buffer purgeable under memory pressure? */
+
+   GLenum InternalFormat; /**< The user-specified format */
+   GLenum _BaseFormat;    /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
+                               GL_STENCIL_INDEX. */
+   gl_format Format;      /**< The actual renderbuffer memory format */
+
+   GLubyte NumSamples;
+
+   GLenum DataType;      /**< Type of values passed to the Get/Put functions */
+   GLvoid *Data;        /**< This may not be used by some kinds of RBs */
+
+   /* Used to wrap one renderbuffer around another: */
+   struct gl_renderbuffer *Wrapped;
+
+   /* Delete this renderbuffer */
+   void (*Delete)(struct gl_renderbuffer *rb);
+
+   /* Allocate new storage for this renderbuffer */
+   GLboolean (*AllocStorage)(struct gl_context *ctx, struct gl_renderbuffer *rb,
+                             GLenum internalFormat,
+                             GLuint width, GLuint height);
+
+   /* Lock/Unlock are called before/after calling the Get/Put functions.
+    * Not sure this is the right place for these yet.
+   void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
+   void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
+    */
+
+   /* Return a pointer to the element/pixel at (x,y).
+    * Should return NULL if the buffer memory can't be directly addressed.
+    */
+   void *(*GetPointer)(struct gl_context *ctx, struct gl_renderbuffer *rb,
+                       GLint x, GLint y);
+
+   /* Get/Read a row of values.
+    * The values will be of format _BaseFormat and type DataType.
+    */
+   void (*GetRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                  GLint x, GLint y, void *values);
+
+   /* Get/Read values at arbitrary locations.
+    * The values will be of format _BaseFormat and type DataType.
+    */
+   void (*GetValues)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                     const GLint x[], const GLint y[], void *values);
+
+   /* Put/Write a row of values.
+    * The values will be of format _BaseFormat and type DataType.
+    */
+   void (*PutRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                  GLint x, GLint y, const void *values, const GLubyte *mask);
+
+   /* Put/Write a row of RGB values.  This is a special-case routine that's
+    * only used for RGBA renderbuffers when the source data is GL_RGB. That's
+    * a common case for glDrawPixels and some triangle routines.
+    * The values will be of format GL_RGB and type DataType.
+    */
+   void (*PutRowRGB)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                    GLint x, GLint y, const void *values, const GLubyte *mask);
+
+
+   /* Put/Write a row of identical values.
+    * The values will be of format _BaseFormat and type DataType.
+    */
+   void (*PutMonoRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                     GLint x, GLint y, const void *value, const GLubyte *mask);
+
+   /* Put/Write values at arbitrary locations.
+    * The values will be of format _BaseFormat and type DataType.
+    */
+   void (*PutValues)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                     const GLint x[], const GLint y[], const void *values,
+                     const GLubyte *mask);
+   /* Put/Write identical values at arbitrary locations.
+    * The values will be of format _BaseFormat and type DataType.
+    */
+   void (*PutMonoValues)(struct gl_context *ctx, struct gl_renderbuffer *rb,
+                         GLuint count, const GLint x[], const GLint y[],
+                         const void *value, const GLubyte *mask);
+};
+
+
+/**
+ * A renderbuffer attachment points to either a texture object (and specifies
+ * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
+ */
+struct gl_renderbuffer_attachment
+{
+   GLenum Type;  /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
+   GLboolean Complete;
+
+   /**
+    * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
+    * application supplied renderbuffer object.
+    */
+   struct gl_renderbuffer *Renderbuffer;
+
+   /**
+    * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
+    * supplied texture object.
+    */
+   struct gl_texture_object *Texture;
+   GLuint TextureLevel; /**< Attached mipmap level. */
+   GLuint CubeMapFace;  /**< 0 .. 5, for cube map textures. */
+   GLuint Zoffset;      /**< Slice for 3D textures,  or layer for both 1D
+                         * and 2D array textures */
+};
+
+
+/**
+ * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
+ * In C++ terms, think of this as a base class from which device drivers
+ * will make derived classes.
+ */
+struct gl_framebuffer
+{
+   _glthread_Mutex Mutex;  /**< for thread safety */
+   /**
+    * If zero, this is a window system framebuffer.  If non-zero, this
+    * is a FBO framebuffer; note that for some devices (i.e. those with
+    * a natural pixel coordinate system for FBOs that differs from the
+    * OpenGL/Mesa coordinate system), this means that the viewport,
+    * polygon face orientation, and polygon stipple will have to be inverted.
+    */
+   GLuint Name;
+
+   GLint RefCount;
+   GLboolean DeletePending;
+
+   /**
+    * The framebuffer's visual. Immutable if this is a window system buffer.
+    * Computed from attachments if user-made FBO.
+    */
+   struct gl_config Visual;
+
+   GLboolean Initialized;
+
+   GLuint Width, Height;	/**< size of frame buffer in pixels */
+
+   /** \name  Drawing bounds (Intersection of buffer size and scissor box) */
+   /*@{*/
+   GLint _Xmin, _Xmax;  /**< inclusive */
+   GLint _Ymin, _Ymax;  /**< exclusive */
+   /*@}*/
+
+   /** \name  Derived Z buffer stuff */
+   /*@{*/
+   GLuint _DepthMax;	/**< Max depth buffer value */
+   GLfloat _DepthMaxF;	/**< Float max depth buffer value */
+   GLfloat _MRD;	/**< minimum resolvable difference in Z values */
+   /*@}*/
+
+   /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
+   GLenum _Status;
+
+   /** Integer color values */
+   GLboolean _IntegerColor;
+
+   /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
+   struct gl_renderbuffer_attachment Attachment[BUFFER_COUNT];
+
+   /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
+    * attribute group and GL_PIXEL attribute group, respectively.
+    */
+   GLenum ColorDrawBuffer[MAX_DRAW_BUFFERS];
+   GLenum ColorReadBuffer;
+
+   /** Computed from ColorDraw/ReadBuffer above */
+   GLuint _NumColorDrawBuffers;
+   GLint _ColorDrawBufferIndexes[MAX_DRAW_BUFFERS]; /**< BUFFER_x or -1 */
+   GLint _ColorReadBufferIndex; /* -1 = None */
+   struct gl_renderbuffer *_ColorDrawBuffers[MAX_DRAW_BUFFERS];
+   struct gl_renderbuffer *_ColorReadBuffer;
+
+   /** The Actual depth/stencil buffers to use.  May be wrappers around the
+    * depth/stencil buffers attached above. */
+   struct gl_renderbuffer *_DepthBuffer;
+   struct gl_renderbuffer *_StencilBuffer;
+
+   /** Delete this framebuffer */
+   void (*Delete)(struct gl_framebuffer *fb);
+};
+
+
+/**
+ * Precision info for shader datatypes.  See glGetShaderPrecisionFormat().
+ */
+struct gl_precision
+{
+   GLushort RangeMin;   /**< min value exponent */
+   GLushort RangeMax;   /**< max value exponent */
+   GLushort Precision;  /**< number of mantissa bits */
+};
+
+
+/**
+ * Limits for vertex and fragment programs/shaders.
+ */
+struct gl_program_constants
+{
+   /* logical limits */
+   GLuint MaxInstructions;
+   GLuint MaxAluInstructions;
+   GLuint MaxTexInstructions;
+   GLuint MaxTexIndirections;
+   GLuint MaxAttribs;
+   GLuint MaxTemps;
+   GLuint MaxAddressRegs;
+   GLuint MaxParameters;
+   GLuint MaxLocalParams;
+   GLuint MaxEnvParams;
+   /* native/hardware limits */
+   GLuint MaxNativeInstructions;
+   GLuint MaxNativeAluInstructions;
+   GLuint MaxNativeTexInstructions;
+   GLuint MaxNativeTexIndirections;
+   GLuint MaxNativeAttribs;
+   GLuint MaxNativeTemps;
+   GLuint MaxNativeAddressRegs;
+   GLuint MaxNativeParameters;
+   /* For shaders */
+   GLuint MaxUniformComponents;
+   /* GL_ARB_geometry_shader4 */
+   GLuint MaxGeometryTextureImageUnits;
+   GLuint MaxGeometryVaryingComponents;
+   GLuint MaxVertexVaryingComponents;
+   GLuint MaxGeometryUniformComponents;
+   GLuint MaxGeometryOutputVertices;
+   GLuint MaxGeometryTotalOutputComponents;
+   /* ES 2.0 and GL_ARB_ES2_compatibility */
+   struct gl_precision LowFloat, MediumFloat, HighFloat;
+   struct gl_precision LowInt, MediumInt, HighInt;
+};
+
+
+/**
+ * Constants which may be overridden by device driver during context creation
+ * but are never changed after that.
+ */
+struct gl_constants
+{
+   GLint MaxTextureMbytes;      /**< Max memory per image, in MB */
+   GLint MaxTextureLevels;      /**< Max mipmap levels. */ 
+   GLint Max3DTextureLevels;    /**< Max mipmap levels for 3D textures */
+   GLint MaxCubeTextureLevels;  /**< Max mipmap levels for cube textures */
+   GLint MaxArrayTextureLayers; /**< Max layers in array textures */
+   GLint MaxTextureRectSize;    /**< Max rectangle texture size, in pixes */
+   GLuint MaxTextureCoordUnits;
+   GLuint MaxTextureImageUnits;
+   GLuint MaxVertexTextureImageUnits;
+   GLuint MaxCombinedTextureImageUnits;
+   GLuint MaxTextureUnits;           /**< = MIN(CoordUnits, ImageUnits) */
+   GLfloat MaxTextureMaxAnisotropy;  /**< GL_EXT_texture_filter_anisotropic */
+   GLfloat MaxTextureLodBias;        /**< GL_EXT_texture_lod_bias */
+
+   GLuint MaxArrayLockSize;
+
+   GLint SubPixelBits;
+
+   GLfloat MinPointSize, MaxPointSize;	     /**< aliased */
+   GLfloat MinPointSizeAA, MaxPointSizeAA;   /**< antialiased */
+   GLfloat PointSizeGranularity;
+   GLfloat MinLineWidth, MaxLineWidth;       /**< aliased */
+   GLfloat MinLineWidthAA, MaxLineWidthAA;   /**< antialiased */
+   GLfloat LineWidthGranularity;
+
+   GLuint MaxColorTableSize;
+
+   GLuint MaxClipPlanes;
+   GLuint MaxLights;
+   GLfloat MaxShininess;                     /**< GL_NV_light_max_exponent */
+   GLfloat MaxSpotExponent;                  /**< GL_NV_light_max_exponent */
+
+   GLuint MaxViewportWidth, MaxViewportHeight;
+
+   struct gl_program_constants VertexProgram;   /**< GL_ARB_vertex_program */
+   struct gl_program_constants FragmentProgram; /**< GL_ARB_fragment_program */
+   struct gl_program_constants GeometryProgram;  /**< GL_ARB_geometry_shader4 */
+   GLuint MaxProgramMatrices;
+   GLuint MaxProgramMatrixStackDepth;
+
+   /** vertex array / buffer object bounds checking */
+   GLboolean CheckArrayBounds;
+
+   GLuint MaxDrawBuffers;    /**< GL_ARB_draw_buffers */
+
+   GLuint MaxColorAttachments;   /**< GL_EXT_framebuffer_object */
+   GLuint MaxRenderbufferSize;   /**< GL_EXT_framebuffer_object */
+   GLuint MaxSamples;            /**< GL_ARB_framebuffer_object */
+
+   GLuint MaxVarying;  /**< Number of float[4] varying parameters */
+
+   GLuint GLSLVersion;  /**< GLSL version supported (ex: 120 = 1.20) */
+
+   /** Which texture units support GL_ATI_envmap_bumpmap as targets */
+   GLbitfield SupportedBumpUnits;
+
+   /**
+    * Maximum amount of time, measured in nanseconds, that the server can wait.
+    */
+   GLuint64 MaxServerWaitTimeout;
+
+   /** GL_EXT_provoking_vertex */
+   GLboolean QuadsFollowProvokingVertexConvention;
+
+   /** OpenGL version 3.0 */
+   GLbitfield ContextFlags;  /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
+
+   /** OpenGL version 3.2 */
+   GLbitfield ProfileMask;   /**< Mask of CONTEXT_x_PROFILE_BIT */
+
+   /** GL_EXT_transform_feedback */
+   GLuint MaxTransformFeedbackSeparateAttribs;
+   GLuint MaxTransformFeedbackSeparateComponents;
+   GLuint MaxTransformFeedbackInterleavedComponents;
+
+   /** GL_EXT_gpu_shader4 */
+   GLint MinProgramTexelOffset, MaxProgramTexelOffset;
+
+   /* GL_EXT_framebuffer_sRGB */
+   GLboolean sRGBCapable; /* can enable sRGB blend/update on FBOs */
+};
+
+
+/**
+ * Enable flag for each OpenGL extension.  Different device drivers will
+ * enable different extensions at runtime.
+ */
+struct gl_extensions
+{
+   GLboolean dummy;  /* don't remove this! */
+   GLboolean dummy_true;  /* Set true by _mesa_init_extensions(). */
+   GLboolean dummy_false; /* Set false by _mesa_init_extensions(). */
+   GLboolean ARB_ES2_compatibility;
+   GLboolean ARB_blend_func_extended;
+   GLboolean ARB_copy_buffer;
+   GLboolean ARB_depth_buffer_float;
+   GLboolean ARB_depth_clamp;
+   GLboolean ARB_depth_texture;
+   GLboolean ARB_draw_buffers;
+   GLboolean ARB_draw_buffers_blend;
+   GLboolean ARB_draw_elements_base_vertex;
+   GLboolean ARB_draw_instanced;
+   GLboolean ARB_fragment_coord_conventions;
+   GLboolean ARB_fragment_program;
+   GLboolean ARB_fragment_program_shadow;
+   GLboolean ARB_fragment_shader;
+   GLboolean ARB_framebuffer_object;
+   GLboolean ARB_explicit_attrib_location;
+   GLboolean ARB_geometry_shader4;
+   GLboolean ARB_half_float_pixel;
+   GLboolean ARB_half_float_vertex;
+   GLboolean ARB_instanced_arrays;
+   GLboolean ARB_map_buffer_range;
+   GLboolean ARB_multisample;
+   GLboolean ARB_multitexture;
+   GLboolean ARB_occlusion_query;
+   GLboolean ARB_occlusion_query2;
+   GLboolean ARB_point_sprite;
+   GLboolean ARB_sampler_objects;
+   GLboolean ARB_seamless_cube_map;
+   GLboolean ARB_shader_objects;
+   GLboolean ARB_shader_stencil_export;
+   GLboolean ARB_shading_language_100;
+   GLboolean ARB_shadow;
+   GLboolean ARB_shadow_ambient;
+   GLboolean ARB_sync;
+   GLboolean ARB_texture_border_clamp;
+   GLboolean ARB_texture_buffer_object;
+   GLboolean ARB_texture_compression;
+   GLboolean ARB_texture_compression_rgtc;
+   GLboolean ARB_texture_cube_map;
+   GLboolean ARB_texture_env_combine;
+   GLboolean ARB_texture_env_crossbar;
+   GLboolean ARB_texture_env_dot3;
+   GLboolean ARB_texture_float;
+   GLboolean ARB_texture_mirrored_repeat;
+   GLboolean ARB_texture_multisample;
+   GLboolean ARB_texture_non_power_of_two;
+   GLboolean ARB_texture_rg;
+   GLboolean ARB_texture_rgb10_a2ui;
+   GLboolean ARB_timer_query;
+   GLboolean ARB_transform_feedback2;
+   GLboolean ARB_transpose_matrix;
+   GLboolean ARB_uniform_buffer_object;
+   GLboolean ARB_vertex_array_object;
+   GLboolean ARB_vertex_buffer_object;
+   GLboolean ARB_vertex_program;
+   GLboolean ARB_vertex_shader;
+   GLboolean ARB_vertex_type_2_10_10_10_rev;
+   GLboolean ARB_window_pos;
+   GLboolean EXT_abgr;
+   GLboolean EXT_bgra;
+   GLboolean EXT_blend_color;
+   GLboolean EXT_blend_equation_separate;
+   GLboolean EXT_blend_func_separate;
+   GLboolean EXT_blend_logic_op;
+   GLboolean EXT_blend_minmax;
+   GLboolean EXT_blend_subtract;
+   GLboolean EXT_clip_volume_hint;
+   GLboolean EXT_compiled_vertex_array;
+   GLboolean EXT_copy_texture;
+   GLboolean EXT_depth_bounds_test;
+   GLboolean EXT_draw_buffers2;
+   GLboolean EXT_draw_range_elements;
+   GLboolean EXT_fog_coord;
+   GLboolean EXT_framebuffer_blit;
+   GLboolean EXT_framebuffer_multisample;
+   GLboolean EXT_framebuffer_object;
+   GLboolean EXT_framebuffer_sRGB;
+   GLboolean EXT_gpu_program_parameters;
+   GLboolean EXT_gpu_shader4;
+   GLboolean EXT_multi_draw_arrays;
+   GLboolean EXT_paletted_texture;
+   GLboolean EXT_packed_depth_stencil;
+   GLboolean EXT_packed_float;
+   GLboolean EXT_packed_pixels;
+   GLboolean EXT_pixel_buffer_object;
+   GLboolean EXT_point_parameters;
+   GLboolean EXT_polygon_offset;
+   GLboolean EXT_provoking_vertex;
+   GLboolean EXT_rescale_normal;
+   GLboolean EXT_shadow_funcs;
+   GLboolean EXT_secondary_color;
+   GLboolean EXT_separate_shader_objects;
+   GLboolean EXT_separate_specular_color;
+   GLboolean EXT_shared_texture_palette;
+   GLboolean EXT_stencil_wrap;
+   GLboolean EXT_stencil_two_side;
+   GLboolean EXT_subtexture;
+   GLboolean EXT_texture;
+   GLboolean EXT_texture_object;
+   GLboolean EXT_texture3D;
+   GLboolean EXT_texture_array;
+   GLboolean EXT_texture_compression_s3tc;
+   GLboolean EXT_texture_env_add;
+   GLboolean EXT_texture_env_combine;
+   GLboolean EXT_texture_env_dot3;
+   GLboolean EXT_texture_filter_anisotropic;
+   GLboolean EXT_texture_integer;
+   GLboolean EXT_texture_lod_bias;
+   GLboolean EXT_texture_mirror_clamp;
+   GLboolean EXT_texture_shared_exponent;
+   GLboolean EXT_texture_sRGB;
+   GLboolean EXT_texture_sRGB_decode;
+   GLboolean EXT_texture_swizzle;
+   GLboolean EXT_transform_feedback;
+   GLboolean EXT_timer_query;
+   GLboolean EXT_vertex_array;
+   GLboolean EXT_vertex_array_bgra;
+   GLboolean EXT_vertex_array_set;
+   GLboolean OES_standard_derivatives;
+   /* vendor extensions */
+   GLboolean AMD_conservative_depth;
+   GLboolean APPLE_client_storage;
+   GLboolean APPLE_packed_pixels;
+   GLboolean APPLE_vertex_array_object;
+   GLboolean APPLE_object_purgeable;
+   GLboolean ATI_envmap_bumpmap;
+   GLboolean ATI_texture_mirror_once;
+   GLboolean ATI_texture_env_combine3;
+   GLboolean ATI_fragment_shader;
+   GLboolean ATI_separate_stencil;
+   GLboolean IBM_rasterpos_clip;
+   GLboolean IBM_multimode_draw_arrays;
+   GLboolean MESA_pack_invert;
+   GLboolean MESA_resize_buffers;
+   GLboolean MESA_ycbcr_texture;
+   GLboolean MESA_texture_array;
+   GLboolean MESA_texture_signed_rgba;
+   GLboolean NV_blend_square;
+   GLboolean NV_conditional_render;
+   GLboolean NV_fragment_program;
+   GLboolean NV_fragment_program_option;
+   GLboolean NV_light_max_exponent;
+   GLboolean NV_point_sprite;
+   GLboolean NV_primitive_restart;
+   GLboolean NV_texgen_reflection;
+   GLboolean NV_texture_env_combine4;
+   GLboolean NV_texture_rectangle;
+   GLboolean NV_vertex_program;
+   GLboolean NV_vertex_program1_1;
+   GLboolean OES_read_format;
+   GLboolean SGIS_generate_mipmap;
+   GLboolean SGIS_texture_edge_clamp;
+   GLboolean SGIS_texture_lod;
+   GLboolean TDFX_texture_compression_FXT1;
+   GLboolean S3_s3tc;
+   GLboolean OES_EGL_image;
+   GLboolean OES_draw_texture;
+   GLboolean EXT_texture_format_BGRA8888;
+   GLboolean extension_sentinel;
+   /** The extension string */
+   const GLubyte *String;
+   /** Number of supported extensions */
+   GLuint Count;
+};
+
+
+/**
+ * A stack of matrices (projection, modelview, color, texture, etc).
+ */
+struct gl_matrix_stack
+{
+   GLmatrix *Top;      /**< points into Stack */
+   GLmatrix *Stack;    /**< array [MaxDepth] of GLmatrix */
+   GLuint Depth;       /**< 0 <= Depth < MaxDepth */
+   GLuint MaxDepth;    /**< size of Stack[] array */
+   GLuint DirtyFlag;   /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
+};
+
+
+/**
+ * \name Bits for image transfer operations 
+ * \sa __struct gl_contextRec::ImageTransferState.
+ */
+/*@{*/
+#define IMAGE_SCALE_BIAS_BIT                      0x1
+#define IMAGE_SHIFT_OFFSET_BIT                    0x2
+#define IMAGE_MAP_COLOR_BIT                       0x4
+#define IMAGE_CLAMP_BIT                           0x800
+
+
+/** Pixel Transfer ops */
+#define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT |			\
+		    IMAGE_SHIFT_OFFSET_BIT |			\
+		    IMAGE_MAP_COLOR_BIT)
+
+/**
+ * \name Bits to indicate what state has changed.  
+ */
+/*@{*/
+#define _NEW_MODELVIEW         (1 << 0)   /**< gl_context::ModelView */
+#define _NEW_PROJECTION        (1 << 1)   /**< gl_context::Projection */
+#define _NEW_TEXTURE_MATRIX    (1 << 2)   /**< gl_context::TextureMatrix */
+#define _NEW_COLOR             (1 << 3)   /**< gl_context::Color */
+#define _NEW_DEPTH             (1 << 4)   /**< gl_context::Depth */
+#define _NEW_EVAL              (1 << 5)   /**< gl_context::Eval, EvalMap */
+#define _NEW_FOG               (1 << 6)   /**< gl_context::Fog */
+#define _NEW_HINT              (1 << 7)   /**< gl_context::Hint */
+#define _NEW_LIGHT             (1 << 8)   /**< gl_context::Light */
+#define _NEW_LINE              (1 << 9)   /**< gl_context::Line */
+#define _NEW_PIXEL             (1 << 10)  /**< gl_context::Pixel */
+#define _NEW_POINT             (1 << 11)  /**< gl_context::Point */
+#define _NEW_POLYGON           (1 << 12)  /**< gl_context::Polygon */
+#define _NEW_POLYGONSTIPPLE    (1 << 13)  /**< gl_context::PolygonStipple */
+#define _NEW_SCISSOR           (1 << 14)  /**< gl_context::Scissor */
+#define _NEW_STENCIL           (1 << 15)  /**< gl_context::Stencil */
+#define _NEW_TEXTURE           (1 << 16)  /**< gl_context::Texture */
+#define _NEW_TRANSFORM         (1 << 17)  /**< gl_context::Transform */
+#define _NEW_VIEWPORT          (1 << 18)  /**< gl_context::Viewport */
+#define _NEW_PACKUNPACK        (1 << 19)  /**< gl_context::Pack, Unpack */
+#define _NEW_ARRAY             (1 << 20)  /**< gl_context::Array */
+#define _NEW_RENDERMODE        (1 << 21)  /**< gl_context::RenderMode, etc */
+#define _NEW_BUFFERS           (1 << 22)  /**< gl_context::Visual, DrawBuffer, */
+#define _NEW_CURRENT_ATTRIB    (1 << 23)  /**< gl_context::Current */
+#define _NEW_MULTISAMPLE       (1 << 24)  /**< gl_context::Multisample */
+#define _NEW_TRACK_MATRIX      (1 << 25)  /**< gl_context::VertexProgram */
+#define _NEW_PROGRAM           (1 << 26)  /**< New program/shader state */
+#define _NEW_PROGRAM_CONSTANTS (1 << 27)
+#define _NEW_BUFFER_OBJECT     (1 << 28)
+#define _NEW_ALL ~0
+/*@}*/
+
+
+/**
+ * \name Bits to track array state changes 
+ *
+ * Also used to summarize array enabled.
+ */
+/*@{*/
+#define _NEW_ARRAY_VERTEX           VERT_BIT_POS
+#define _NEW_ARRAY_WEIGHT           VERT_BIT_WEIGHT
+#define _NEW_ARRAY_NORMAL           VERT_BIT_NORMAL
+#define _NEW_ARRAY_COLOR0           VERT_BIT_COLOR0
+#define _NEW_ARRAY_COLOR1           VERT_BIT_COLOR1
+#define _NEW_ARRAY_FOGCOORD         VERT_BIT_FOG
+#define _NEW_ARRAY_INDEX            VERT_BIT_COLOR_INDEX
+#define _NEW_ARRAY_EDGEFLAG         VERT_BIT_EDGEFLAG
+#define _NEW_ARRAY_POINT_SIZE       VERT_BIT_COLOR_INDEX  /* aliased */
+#define _NEW_ARRAY_TEXCOORD_0       VERT_BIT_TEX0
+#define _NEW_ARRAY_TEXCOORD_1       VERT_BIT_TEX1
+#define _NEW_ARRAY_TEXCOORD_2       VERT_BIT_TEX2
+#define _NEW_ARRAY_TEXCOORD_3       VERT_BIT_TEX3
+#define _NEW_ARRAY_TEXCOORD_4       VERT_BIT_TEX4
+#define _NEW_ARRAY_TEXCOORD_5       VERT_BIT_TEX5
+#define _NEW_ARRAY_TEXCOORD_6       VERT_BIT_TEX6
+#define _NEW_ARRAY_TEXCOORD_7       VERT_BIT_TEX7
+#define _NEW_ARRAY_ATTRIB_0         VERT_BIT_GENERIC0  /* start at bit 16 */
+#define _NEW_ARRAY_ALL              0xffffffff
+
+
+#define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
+#define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
+/*@}*/
+
+
+
+/**
+ * \name A bunch of flags that we think might be useful to drivers.
+ * 
+ * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
+ */
+/*@{*/
+#define DD_FLATSHADE                0x1
+#define DD_SEPARATE_SPECULAR        0x2
+#define DD_TRI_CULL_FRONT_BACK      0x4 /* special case on some hw */
+#define DD_TRI_LIGHT_TWOSIDE        0x8
+#define DD_TRI_UNFILLED             0x10
+#define DD_TRI_SMOOTH               0x20
+#define DD_TRI_STIPPLE              0x40
+#define DD_TRI_OFFSET               0x80
+#define DD_LINE_SMOOTH              0x100
+#define DD_LINE_STIPPLE             0x200
+#define DD_POINT_SMOOTH             0x400
+#define DD_POINT_ATTEN              0x800
+#define DD_TRI_TWOSTENCIL           0x1000
+/*@}*/
+
+
+/**
+ * \name Define the state changes under which each of these bits might change
+ */
+/*@{*/
+#define _DD_NEW_FLATSHADE                _NEW_LIGHT
+#define _DD_NEW_SEPARATE_SPECULAR        (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
+#define _DD_NEW_TRI_CULL_FRONT_BACK      _NEW_POLYGON
+#define _DD_NEW_TRI_LIGHT_TWOSIDE        _NEW_LIGHT
+#define _DD_NEW_TRI_UNFILLED             _NEW_POLYGON
+#define _DD_NEW_TRI_SMOOTH               _NEW_POLYGON
+#define _DD_NEW_TRI_STIPPLE              _NEW_POLYGON
+#define _DD_NEW_TRI_OFFSET               _NEW_POLYGON
+#define _DD_NEW_LINE_SMOOTH              _NEW_LINE
+#define _DD_NEW_LINE_STIPPLE             _NEW_LINE
+#define _DD_NEW_LINE_WIDTH               _NEW_LINE
+#define _DD_NEW_POINT_SMOOTH             _NEW_POINT
+#define _DD_NEW_POINT_SIZE               _NEW_POINT
+#define _DD_NEW_POINT_ATTEN              _NEW_POINT
+/*@}*/
+
+
+/**
+ * Composite state flags
+ */
+/*@{*/
+#define _MESA_NEW_NEED_EYE_COORDS         (_NEW_LIGHT |		\
+                                           _NEW_TEXTURE |	\
+                                           _NEW_POINT |		\
+                                           _NEW_PROGRAM |	\
+                                           _NEW_MODELVIEW)
+
+#define _MESA_NEW_NEED_NORMALS            (_NEW_LIGHT |		\
+                                           _NEW_TEXTURE)
+
+#define _MESA_NEW_TRANSFER_STATE          (_NEW_PIXEL)
+/*@}*/
+
+
+
+
+/* This has to be included here. */
+#include "dd.h"
+
+
+/**
+ * Display list flags.
+ * Strictly this is a tnl-private concept, but it doesn't seem
+ * worthwhile adding a tnl private structure just to hold this one bit
+ * of information:
+ */
+#define DLIST_DANGLING_REFS     0x1 
+
+
+/** Opaque declaration of display list payload data type */
+union gl_dlist_node;
+
+
+/**
+ * Provide a location where information about a display list can be
+ * collected.  Could be extended with driverPrivate structures,
+ * etc. in the future.
+ */
+struct gl_display_list
+{
+   GLuint Name;
+   GLbitfield Flags;  /**< DLIST_x flags */
+   /** The dlist commands are in a linked list of nodes */
+   union gl_dlist_node *Head;
+};
+
+
+/**
+ * State used during display list compilation and execution.
+ */
+struct gl_dlist_state
+{
+   GLuint CallDepth;		/**< Current recursion calling depth */
+
+   struct gl_display_list *CurrentList; /**< List currently being compiled */
+   union gl_dlist_node *CurrentBlock; /**< Pointer to current block of nodes */
+   GLuint CurrentPos;		/**< Index into current block of nodes */
+
+   GLvertexformat ListVtxfmt;
+
+   GLubyte ActiveAttribSize[VERT_ATTRIB_MAX];
+   GLfloat CurrentAttrib[VERT_ATTRIB_MAX][4];
+   
+   GLubyte ActiveMaterialSize[MAT_ATTRIB_MAX];
+   GLfloat CurrentMaterial[MAT_ATTRIB_MAX][4];
+
+   GLubyte ActiveIndex;
+   GLfloat CurrentIndex;
+   
+   GLubyte ActiveEdgeFlag;
+   GLboolean CurrentEdgeFlag;
+
+   struct {
+      /* State known to have been set by the currently-compiling display
+       * list.  Used to eliminate some redundant state changes.
+       */
+      GLenum ShadeModel;
+   } Current;
+};
+
+
+/**
+ * Enum for the OpenGL APIs we know about and may support.
+ */
+typedef enum
+{
+   API_OPENGL,
+   API_OPENGLES,
+   API_OPENGLES2
+} gl_api;
+
+
+/**
+ * Mesa rendering context.
+ *
+ * This is the central context data structure for Mesa.  Almost all
+ * OpenGL state is contained in this structure.
+ * Think of this as a base class from which device drivers will derive
+ * sub classes.
+ *
+ * The struct gl_context typedef names this structure.
+ */
+struct gl_context
+{
+   /** State possibly shared with other contexts in the address space */
+   struct gl_shared_state *Shared;
+
+   /** \name API function pointer tables */
+   /*@{*/
+   gl_api API;
+   struct _glapi_table *Save;	/**< Display list save functions */
+   struct _glapi_table *Exec;	/**< Execute functions */
+   struct _glapi_table *CurrentDispatch;  /**< == Save or Exec !! */
+   /*@}*/
+
+   struct gl_config Visual;
+   struct gl_framebuffer *DrawBuffer;	/**< buffer for writing */
+   struct gl_framebuffer *ReadBuffer;	/**< buffer for reading */
+   struct gl_framebuffer *WinSysDrawBuffer;  /**< set with MakeCurrent */
+   struct gl_framebuffer *WinSysReadBuffer;  /**< set with MakeCurrent */
+
+   /**
+    * Device driver function pointer table
+    */
+   struct dd_function_table Driver;
+
+   void *DriverCtx;	/**< Points to device driver context/state */
+
+   /** Core/Driver constants */
+   struct gl_constants Const;
+
+   /** \name The various 4x4 matrix stacks */
+   /*@{*/
+   struct gl_matrix_stack ModelviewMatrixStack;
+   struct gl_matrix_stack ProjectionMatrixStack;
+   struct gl_matrix_stack TextureMatrixStack[MAX_TEXTURE_UNITS];
+   struct gl_matrix_stack ProgramMatrixStack[MAX_PROGRAM_MATRICES];
+   struct gl_matrix_stack *CurrentStack; /**< Points to one of the above stacks */
+   /*@}*/
+
+   /** Combined modelview and projection matrix */
+   GLmatrix _ModelProjectMatrix;
+
+   /** \name Display lists */
+   struct gl_dlist_state ListState;
+
+   GLboolean ExecuteFlag;	/**< Execute GL commands? */
+   GLboolean CompileFlag;	/**< Compile GL commands into display list? */
+
+   /** Extension information */
+   struct gl_extensions Extensions;
+
+   /** Version info */
+   GLuint VersionMajor, VersionMinor;
+   char *VersionString;
+
+   /** \name State attribute stack (for glPush/PopAttrib) */
+   /*@{*/
+   GLuint AttribStackDepth;
+   struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];
+   /*@}*/
+
+   /** \name Renderer attribute groups
+    * 
+    * We define a struct for each attribute group to make pushing and popping
+    * attributes easy.  Also it's a good organization.
+    */
+   /*@{*/
+   struct gl_accum_attrib	Accum;		/**< Accum buffer attributes */
+   struct gl_colorbuffer_attrib	Color;		/**< Color buffer attributes */
+   struct gl_current_attrib	Current;	/**< Current attributes */
+   struct gl_depthbuffer_attrib	Depth;		/**< Depth buffer attributes */
+   struct gl_eval_attrib	Eval;		/**< Eval attributes */
+   struct gl_fog_attrib		Fog;		/**< Fog attributes */
+   struct gl_hint_attrib	Hint;		/**< Hint attributes */
+   struct gl_light_attrib	Light;		/**< Light attributes */
+   struct gl_line_attrib	Line;		/**< Line attributes */
+   struct gl_list_attrib	List;		/**< List attributes */
+   struct gl_multisample_attrib Multisample;
+   struct gl_pixel_attrib	Pixel;		/**< Pixel attributes */
+   struct gl_point_attrib	Point;		/**< Point attributes */
+   struct gl_polygon_attrib	Polygon;	/**< Polygon attributes */
+   GLuint PolygonStipple[32];			/**< Polygon stipple */
+   struct gl_scissor_attrib	Scissor;	/**< Scissor attributes */
+   struct gl_stencil_attrib	Stencil;	/**< Stencil buffer attributes */
+   struct gl_texture_attrib	Texture;	/**< Texture attributes */
+   struct gl_transform_attrib	Transform;	/**< Transformation attributes */
+   struct gl_viewport_attrib	Viewport;	/**< Viewport attributes */
+   /*@}*/
+
+   /** \name Client attribute stack */
+   /*@{*/
+   GLuint ClientAttribStackDepth;
+   struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];
+   /*@}*/
+
+   /** \name Client attribute groups */
+   /*@{*/
+   struct gl_array_attrib	Array;	/**< Vertex arrays */
+   struct gl_pixelstore_attrib	Pack;	/**< Pixel packing */
+   struct gl_pixelstore_attrib	Unpack;	/**< Pixel unpacking */
+   struct gl_pixelstore_attrib	DefaultPacking;	/**< Default params */
+   /*@}*/
+
+   /** \name Other assorted state (not pushed/popped on attribute stack) */
+   /*@{*/
+   struct gl_pixelmaps          PixelMaps;
+
+   struct gl_evaluators EvalMap;   /**< All evaluators */
+   struct gl_feedback   Feedback;  /**< Feedback */
+   struct gl_selection  Select;    /**< Selection */
+
+   struct gl_program_state Program;  /**< general program state */
+   struct gl_vertex_program_state VertexProgram;
+   struct gl_fragment_program_state FragmentProgram;
+   struct gl_geometry_program_state GeometryProgram;
+   struct gl_ati_fragment_shader_state ATIFragmentShader;
+
+   struct gl_shader_state Shader; /**< GLSL shader object state */
+   struct gl_shader_compiler_options ShaderCompilerOptions[MESA_SHADER_TYPES];
+
+   struct gl_query_state Query;  /**< occlusion, timer queries */
+
+   struct gl_transform_feedback TransformFeedback;
+
+   struct gl_buffer_object *CopyReadBuffer; /**< GL_ARB_copy_buffer */
+   struct gl_buffer_object *CopyWriteBuffer; /**< GL_ARB_copy_buffer */
+   /*@}*/
+
+   struct gl_meta_state *Meta;  /**< for "meta" operations */
+
+   /* GL_EXT_framebuffer_object */
+   struct gl_renderbuffer *CurrentRenderbuffer;
+
+   GLenum ErrorValue;        /**< Last error code */
+
+   /**
+    * Recognize and silence repeated error debug messages in buggy apps.
+    */
+   const char *ErrorDebugFmtString;
+   GLuint ErrorDebugCount;
+
+   GLenum RenderMode;        /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
+   GLbitfield NewState;      /**< bitwise-or of _NEW_* flags */
+
+   GLboolean ViewportInitialized;  /**< has viewport size been initialized? */
+
+   GLbitfield varying_vp_inputs;  /**< mask of VERT_BIT_* flags */
+
+   /** \name Derived state */
+   /*@{*/
+   /** Bitwise-or of DD_* flags.  Note that this bitfield may be used before
+    * state validation so they need to always be current.
+    */
+   GLbitfield _TriangleCaps;
+   GLbitfield _ImageTransferState;/**< bitwise-or of IMAGE_*_BIT flags */
+   GLfloat _EyeZDir[3];
+   GLfloat _ModelViewInvScale;
+   GLboolean _NeedEyeCoords;
+   GLboolean _ForceEyeCoords; 
+
+   GLuint TextureStateTimestamp; /**< detect changes to shared state */
+
+   struct gl_shine_tab *_ShineTable[2]; /**< Active shine tables */
+   struct gl_shine_tab *_ShineTabList;  /**< MRU list of inactive shine tables */
+   /**@}*/
+
+   struct gl_list_extensions *ListExt; /**< driver dlist extensions */
+
+   /** \name For debugging/development only */
+   /*@{*/
+   GLboolean FirstTimeCurrent;
+   /*@}*/
+
+   /** software compression/decompression supported or not */
+   GLboolean Mesa_DXTn;
+
+   GLboolean TextureFormatSupported[MESA_FORMAT_COUNT];
+
+   /** 
+    * Use dp4 (rather than mul/mad) instructions for position
+    * transformation?
+    */
+   GLboolean mvp_with_dp4;
+
+   /**
+    * \name Hooks for module contexts.  
+    *
+    * These will eventually live in the driver or elsewhere.
+    */
+   /*@{*/
+   void *swrast_context;
+   void *swsetup_context;
+   void *swtnl_context;
+   void *swtnl_im;
+   struct st_context *st;
+   void *aelt_context;
+   /*@}*/
+};
+
+
+#ifdef DEBUG
+extern int MESA_VERBOSE;
+extern int MESA_DEBUG_FLAGS;
+# define MESA_FUNCTION __FUNCTION__
+#else
+# define MESA_VERBOSE 0
+# define MESA_DEBUG_FLAGS 0
+# define MESA_FUNCTION "a function"
+# ifndef NDEBUG
+#  define NDEBUG
+# endif
+#endif
+
+
+/** The MESA_VERBOSE var is a bitmask of these flags */
+enum _verbose
+{
+   VERBOSE_VARRAY		= 0x0001,
+   VERBOSE_TEXTURE		= 0x0002,
+   VERBOSE_MATERIAL		= 0x0004,
+   VERBOSE_PIPELINE		= 0x0008,
+   VERBOSE_DRIVER		= 0x0010,
+   VERBOSE_STATE		= 0x0020,
+   VERBOSE_API			= 0x0040,
+   VERBOSE_DISPLAY_LIST		= 0x0100,
+   VERBOSE_LIGHTING		= 0x0200,
+   VERBOSE_PRIMS		= 0x0400,
+   VERBOSE_VERTS		= 0x0800,
+   VERBOSE_DISASSEM		= 0x1000,
+   VERBOSE_DRAW                 = 0x2000,
+   VERBOSE_SWAPBUFFERS          = 0x4000
+};
+
+
+/** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
+enum _debug
+{
+   DEBUG_ALWAYS_FLUSH		= 0x1
+};
+
+
+
+#endif /* MTYPES_H */
diff --git a/mesalib/src/mesa/main/pbo.c b/mesalib/src/mesa/main/pbo.c
new file mode 100644
index 000000000..dc00d423b
--- /dev/null
+++ b/mesalib/src/mesa/main/pbo.c
@@ -0,0 +1,372 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009-2011  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * \file pbo.c
+ * \brief Functions related to Pixel Buffer Objects.
+ */
+
+
+
+#include "glheader.h"
+#include "bufferobj.h"
+#include "image.h"
+#include "imports.h"
+#include "mtypes.h"
+#include "pbo.h"
+
+
+
+/**
+ * When we're about to read pixel data out of a PBO (via glDrawPixels,
+ * glTexImage, etc) or write data into a PBO (via glReadPixels,
+ * glGetTexImage, etc) we call this function to check that we're not
+ * going to read out of bounds.
+ *
+ * XXX This would also be a convenient time to check that the PBO isn't
+ * currently mapped.  Whoever calls this function should check for that.
+ * Remember, we can't use a PBO when it's mapped!
+ *
+ * If we're not using a PBO, this is a no-op.
+ *
+ * \param width  width of image to read/write
+ * \param height  height of image to read/write
+ * \param depth  depth of image to read/write
+ * \param format  format of image to read/write
+ * \param type  datatype of image to read/write
+ * \param ptr  the user-provided pointer/offset
+ * \return GL_TRUE if the PBO access is OK, GL_FALSE if the access would
+ *         go out of bounds.
+ */
+GLboolean
+_mesa_validate_pbo_access(GLuint dimensions,
+                          const struct gl_pixelstore_attrib *pack,
+                          GLsizei width, GLsizei height, GLsizei depth,
+                          GLenum format, GLenum type, const GLvoid *ptr)
+{
+   GLvoid *start, *end;
+   const GLubyte *sizeAddr; /* buffer size, cast to a pointer */
+
+   if (!_mesa_is_bufferobj(pack->BufferObj))
+      return GL_TRUE;  /* no PBO, OK */
+
+   if (pack->BufferObj->Size == 0)
+      /* no buffer! */
+      return GL_FALSE;
+
+   /* get address of first pixel we'll read */
+   start = _mesa_image_address(dimensions, pack, ptr, width, height,
+                               format, type, 0, 0, 0);
+
+   /* get address just past the last pixel we'll read */
+   end =  _mesa_image_address(dimensions, pack, ptr, width, height,
+                              format, type, depth-1, height-1, width);
+
+
+   sizeAddr = ((const GLubyte *) 0) + pack->BufferObj->Size;
+
+   if ((const GLubyte *) start > sizeAddr) {
+      /* This will catch negative values / wrap-around */
+      return GL_FALSE;
+   }
+   if ((const GLubyte *) end > sizeAddr) {
+      /* Image read goes beyond end of buffer */
+      return GL_FALSE;
+   }
+
+   /* OK! */
+   return GL_TRUE;
+}
+
+
+/**
+ * For commands that read from a PBO (glDrawPixels, glTexImage,
+ * glPolygonStipple, etc), if we're reading from a PBO, map it read-only
+ * and return the pointer into the PBO.  If we're not reading from a
+ * PBO, return \p src as-is.
+ * If non-null return, must call _mesa_unmap_pbo_source() when done.
+ *
+ * \return NULL if error, else pointer to start of data
+ */
+const GLvoid *
+_mesa_map_pbo_source(struct gl_context *ctx,
+                     const struct gl_pixelstore_attrib *unpack,
+                     const GLvoid *src)
+{
+   const GLubyte *buf;
+
+   if (_mesa_is_bufferobj(unpack->BufferObj)) {
+      /* unpack from PBO */
+      buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+                                              GL_READ_ONLY_ARB,
+                                              unpack->BufferObj);
+      if (!buf)
+         return NULL;
+
+      buf = ADD_POINTERS(buf, src);
+   }
+   else {
+      /* unpack from normal memory */
+      buf = src;
+   }
+
+   return buf;
+}
+
+
+/**
+ * Combine PBO-read validation and mapping.
+ * If any GL errors are detected, they'll be recorded and NULL returned.
+ * \sa _mesa_validate_pbo_access
+ * \sa _mesa_map_pbo_source
+ * A call to this function should have a matching call to
+ * _mesa_unmap_pbo_source().
+ */
+const GLvoid *
+_mesa_map_validate_pbo_source(struct gl_context *ctx,
+                              GLuint dimensions,
+                              const struct gl_pixelstore_attrib *unpack,
+                              GLsizei width, GLsizei height, GLsizei depth,
+                              GLenum format, GLenum type, const GLvoid *ptr,
+                              const char *where)
+{
+   ASSERT(dimensions == 1 || dimensions == 2 || dimensions == 3);
+
+   if (!_mesa_is_bufferobj(unpack->BufferObj)) {
+      /* non-PBO access: no validation to be done */
+      return ptr;
+   }
+
+   if (!_mesa_validate_pbo_access(dimensions, unpack,
+                                  width, height, depth, format, type, ptr)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "%s(out of bounds PBO access)", where);
+      return NULL;
+   }
+
+   if (_mesa_bufferobj_mapped(unpack->BufferObj)) {
+      /* buffer is already mapped - that's an error */
+      _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where);
+      return NULL;
+   }
+
+   ptr = _mesa_map_pbo_source(ctx, unpack, ptr);
+   return ptr;
+}
+
+
+/**
+ * Counterpart to _mesa_map_pbo_source()
+ */
+void
+_mesa_unmap_pbo_source(struct gl_context *ctx,
+                       const struct gl_pixelstore_attrib *unpack)
+{
+   ASSERT(unpack != &ctx->Pack); /* catch pack/unpack mismatch */
+   if (_mesa_is_bufferobj(unpack->BufferObj)) {
+      ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+                              unpack->BufferObj);
+   }
+}
+
+
+/**
+ * For commands that write to a PBO (glReadPixels, glGetColorTable, etc),
+ * if we're writing to a PBO, map it write-only and return the pointer
+ * into the PBO.  If we're not writing to a PBO, return \p dst as-is.
+ * If non-null return, must call _mesa_unmap_pbo_dest() when done.
+ *
+ * \return NULL if error, else pointer to start of data
+ */
+void *
+_mesa_map_pbo_dest(struct gl_context *ctx,
+                   const struct gl_pixelstore_attrib *pack,
+                   GLvoid *dest)
+{
+   void *buf;
+
+   if (_mesa_is_bufferobj(pack->BufferObj)) {
+      /* pack into PBO */
+      buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
+                                              GL_WRITE_ONLY_ARB,
+                                              pack->BufferObj);
+      if (!buf)
+         return NULL;
+
+      buf = ADD_POINTERS(buf, dest);
+   }
+   else {
+      /* pack to normal memory */
+      buf = dest;
+   }
+
+   return buf;
+}
+
+
+/**
+ * Combine PBO-write validation and mapping.
+ * If any GL errors are detected, they'll be recorded and NULL returned.
+ * \sa _mesa_validate_pbo_access
+ * \sa _mesa_map_pbo_dest
+ * A call to this function should have a matching call to
+ * _mesa_unmap_pbo_dest().
+ */
+GLvoid *
+_mesa_map_validate_pbo_dest(struct gl_context *ctx,
+                            GLuint dimensions,
+                            const struct gl_pixelstore_attrib *unpack,
+                            GLsizei width, GLsizei height, GLsizei depth,
+                            GLenum format, GLenum type, GLvoid *ptr,
+                            const char *where)
+{
+   ASSERT(dimensions == 1 || dimensions == 2 || dimensions == 3);
+
+   if (!_mesa_is_bufferobj(unpack->BufferObj)) {
+      /* non-PBO access: no validation to be done */
+      return ptr;
+   }
+
+   if (!_mesa_validate_pbo_access(dimensions, unpack,
+                                  width, height, depth, format, type, ptr)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "%s(out of bounds PBO access)", where);
+      return NULL;
+   }
+
+   if (_mesa_bufferobj_mapped(unpack->BufferObj)) {
+      /* buffer is already mapped - that's an error */
+      _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where);
+      return NULL;
+   }
+
+   ptr = _mesa_map_pbo_dest(ctx, unpack, ptr);
+   return ptr;
+}
+
+
+/**
+ * Counterpart to _mesa_map_pbo_dest()
+ */
+void
+_mesa_unmap_pbo_dest(struct gl_context *ctx,
+                     const struct gl_pixelstore_attrib *pack)
+{
+   ASSERT(pack != &ctx->Unpack); /* catch pack/unpack mismatch */
+   if (_mesa_is_bufferobj(pack->BufferObj)) {
+      ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, pack->BufferObj);
+   }
+}
+
+
+
+/**
+ * Check if an unpack PBO is active prior to fetching a texture image.
+ * If so, do bounds checking and map the buffer into main memory.
+ * Any errors detected will be recorded.
+ * The caller _must_ call _mesa_unmap_teximage_pbo() too!
+ */
+const GLvoid *
+_mesa_validate_pbo_teximage(struct gl_context *ctx, GLuint dimensions,
+			    GLsizei width, GLsizei height, GLsizei depth,
+			    GLenum format, GLenum type, const GLvoid *pixels,
+			    const struct gl_pixelstore_attrib *unpack,
+			    const char *funcName)
+{
+   GLubyte *buf;
+
+   if (!_mesa_is_bufferobj(unpack->BufferObj)) {
+      /* no PBO */
+      return pixels;
+   }
+   if (!_mesa_validate_pbo_access(dimensions, unpack, width, height, depth,
+                                  format, type, pixels)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(invalid PBO access)");
+      return NULL;
+   }
+
+   buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+                                          GL_READ_ONLY_ARB, unpack->BufferObj);
+   if (!buf) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(PBO is mapped)");
+      return NULL;
+   }
+
+   return ADD_POINTERS(buf, pixels);
+}
+
+
+/**
+ * Check if an unpack PBO is active prior to fetching a compressed texture
+ * image.
+ * If so, do bounds checking and map the buffer into main memory.
+ * Any errors detected will be recorded.
+ * The caller _must_ call _mesa_unmap_teximage_pbo() too!
+ */
+const GLvoid *
+_mesa_validate_pbo_compressed_teximage(struct gl_context *ctx,
+                                 GLsizei imageSize, const GLvoid *pixels,
+                                 const struct gl_pixelstore_attrib *packing,
+                                 const char *funcName)
+{
+   GLubyte *buf;
+
+   if (!_mesa_is_bufferobj(packing->BufferObj)) {
+      /* not using a PBO - return pointer unchanged */
+      return pixels;
+   }
+   if ((const GLubyte *) pixels + imageSize >
+       ((const GLubyte *) 0) + packing->BufferObj->Size) {
+      /* out of bounds read! */
+      _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(invalid PBO access)");
+      return NULL;
+   }
+
+   buf = (GLubyte*) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+                                         GL_READ_ONLY_ARB, packing->BufferObj);
+   if (!buf) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(PBO is mapped");
+      return NULL;
+   }
+
+   return ADD_POINTERS(buf, pixels);
+}
+
+
+/**
+ * This function must be called after either of the validate_pbo_*_teximage()
+ * functions.  It unmaps the PBO buffer if it was mapped earlier.
+ */
+void
+_mesa_unmap_teximage_pbo(struct gl_context *ctx,
+                         const struct gl_pixelstore_attrib *unpack)
+{
+   if (_mesa_is_bufferobj(unpack->BufferObj)) {
+      ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+                              unpack->BufferObj);
+   }
+}
+
+
diff --git a/mesalib/src/mesa/main/pbo.h b/mesalib/src/mesa/main/pbo.h
new file mode 100644
index 000000000..0cddd72ba
--- /dev/null
+++ b/mesalib/src/mesa/main/pbo.h
@@ -0,0 +1,92 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009-2011  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#ifndef PBO_H
+#define PBO_H
+
+
+#include "mtypes.h"
+
+
+extern GLboolean
+_mesa_validate_pbo_access(GLuint dimensions,
+                          const struct gl_pixelstore_attrib *pack,
+                          GLsizei width, GLsizei height, GLsizei depth,
+                          GLenum format, GLenum type, const GLvoid *ptr);
+
+extern const GLvoid *
+_mesa_map_pbo_source(struct gl_context *ctx,
+                     const struct gl_pixelstore_attrib *unpack,
+                     const GLvoid *src);
+
+extern const GLvoid *
+_mesa_map_validate_pbo_source(struct gl_context *ctx,
+                              GLuint dimensions,
+                              const struct gl_pixelstore_attrib *unpack,
+                              GLsizei width, GLsizei height, GLsizei depth,
+                              GLenum format, GLenum type, const GLvoid *ptr,
+                              const char *where);
+
+extern void
+_mesa_unmap_pbo_source(struct gl_context *ctx,
+                       const struct gl_pixelstore_attrib *unpack);
+
+extern void *
+_mesa_map_pbo_dest(struct gl_context *ctx,
+                   const struct gl_pixelstore_attrib *pack,
+                   GLvoid *dest);
+
+extern GLvoid *
+_mesa_map_validate_pbo_dest(struct gl_context *ctx,
+                            GLuint dimensions,
+                            const struct gl_pixelstore_attrib *unpack,
+                            GLsizei width, GLsizei height, GLsizei depth,
+                            GLenum format, GLenum type, GLvoid *ptr,
+                            const char *where);
+
+extern void
+_mesa_unmap_pbo_dest(struct gl_context *ctx,
+                     const struct gl_pixelstore_attrib *pack);
+
+
+extern const GLvoid *
+_mesa_validate_pbo_teximage(struct gl_context *ctx, GLuint dimensions,
+			    GLsizei width, GLsizei height, GLsizei depth,
+			    GLenum format, GLenum type, const GLvoid *pixels,
+			    const struct gl_pixelstore_attrib *unpack,
+			    const char *funcName);
+
+extern const GLvoid *
+_mesa_validate_pbo_compressed_teximage(struct gl_context *ctx,
+                                    GLsizei imageSize, const GLvoid *pixels,
+                                    const struct gl_pixelstore_attrib *packing,
+                                    const char *funcName);
+
+extern void
+_mesa_unmap_teximage_pbo(struct gl_context *ctx,
+                         const struct gl_pixelstore_attrib *unpack);
+
+
+#endif
diff --git a/mesalib/src/mesa/main/pixel.c b/mesalib/src/mesa/main/pixel.c
index 2b4934fd3..195fa234b 100644
--- a/mesalib/src/mesa/main/pixel.c
+++ b/mesalib/src/mesa/main/pixel.c
@@ -1,701 +1,699 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.1

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-/**

- * \file pixel.c

- * Pixel transfer functions (glPixelZoom, glPixelMap, glPixelTransfer)

- */

-

-#include "glheader.h"

-#include "bufferobj.h"

-#include "colormac.h"

-#include "context.h"

-#include "macros.h"

-#include "mfeatures.h"

-#include "pixel.h"

-#include "mtypes.h"

-#include "main/dispatch.h"

-

-

-#if FEATURE_pixel_transfer

-

-

-/**********************************************************************/

-/*****                    glPixelZoom                             *****/

-/**********************************************************************/

-

-static void GLAPIENTRY

-_mesa_PixelZoom( GLfloat xfactor, GLfloat yfactor )

-{

-   GET_CURRENT_CONTEXT(ctx);

-

-   if (ctx->Pixel.ZoomX == xfactor &&

-       ctx->Pixel.ZoomY == yfactor)

-      return;

-

-   FLUSH_VERTICES(ctx, _NEW_PIXEL);

-   ctx->Pixel.ZoomX = xfactor;

-   ctx->Pixel.ZoomY = yfactor;

-}

-

-

-

-/**********************************************************************/

-/*****                         glPixelMap                         *****/

-/**********************************************************************/

-

-/**

- * Return pointer to a pixelmap by name.

- */

-static struct gl_pixelmap *

-get_pixelmap(struct gl_context *ctx, GLenum map)

-{

-   switch (map) {

-   case GL_PIXEL_MAP_I_TO_I:

-      return &ctx->PixelMaps.ItoI;

-   case GL_PIXEL_MAP_S_TO_S:

-      return &ctx->PixelMaps.StoS;

-   case GL_PIXEL_MAP_I_TO_R:

-      return &ctx->PixelMaps.ItoR;

-   case GL_PIXEL_MAP_I_TO_G:

-      return &ctx->PixelMaps.ItoG;

-   case GL_PIXEL_MAP_I_TO_B:

-      return &ctx->PixelMaps.ItoB;

-   case GL_PIXEL_MAP_I_TO_A:

-      return &ctx->PixelMaps.ItoA;

-   case GL_PIXEL_MAP_R_TO_R:

-      return &ctx->PixelMaps.RtoR;

-   case GL_PIXEL_MAP_G_TO_G:

-      return &ctx->PixelMaps.GtoG;

-   case GL_PIXEL_MAP_B_TO_B:

-      return &ctx->PixelMaps.BtoB;

-   case GL_PIXEL_MAP_A_TO_A:

-      return &ctx->PixelMaps.AtoA;

-   default:

-      return NULL;

-   }

-}

-

-

-/**

- * Helper routine used by the other _mesa_PixelMap() functions.

- */

-static void

-store_pixelmap(struct gl_context *ctx, GLenum map, GLsizei mapsize,

-               const GLfloat *values)

-{

-   GLint i;

-   struct gl_pixelmap *pm = get_pixelmap(ctx, map);

-   if (!pm) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glPixelMap(map)");

-      return;

-   }

-

-   switch (map) {

-   case GL_PIXEL_MAP_S_TO_S:

-      /* special case */

-      ctx->PixelMaps.StoS.Size = mapsize;

-      for (i = 0; i < mapsize; i++) {

-         ctx->PixelMaps.StoS.Map[i] = (GLfloat)IROUND(values[i]);

-      }

-      break;

-   case GL_PIXEL_MAP_I_TO_I:

-      /* special case */

-      ctx->PixelMaps.ItoI.Size = mapsize;

-      for (i = 0; i < mapsize; i++) {

-         ctx->PixelMaps.ItoI.Map[i] = values[i];

-      }

-      break;

-   default:

-      /* general case */

-      pm->Size = mapsize;

-      for (i = 0; i < mapsize; i++) {

-         GLfloat val = CLAMP(values[i], 0.0F, 1.0F);

-         pm->Map[i] = val;

-         pm->Map8[i] = (GLint) (val * 255.0F);

-      }

-   }

-}

-

-

-/**

- * Convenience wrapper for _mesa_validate_pbo_access() for gl[Get]PixelMap().

- */

-static GLboolean

-validate_pbo_access(struct gl_context *ctx, struct gl_pixelstore_attrib *pack,

-                    GLsizei mapsize, GLenum format, GLenum type,

-                    const GLvoid *ptr)

-{

-   GLboolean ok;

-

-   /* Note, need to use DefaultPacking and Unpack's buffer object */

-   _mesa_reference_buffer_object(ctx,

-                                 &ctx->DefaultPacking.BufferObj,

-                                 pack->BufferObj);

-

-   ok = _mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1,

-                                  format, type, ptr);

-

-   /* restore */

-   _mesa_reference_buffer_object(ctx,

-                                 &ctx->DefaultPacking.BufferObj,

-                                 ctx->Shared->NullBufferObj);

-

-   if (!ok) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glPixelMap(invalid PBO access)");

-   }

-   return ok;

-}

-

-

-static void GLAPIENTRY

-_mesa_PixelMapfv( GLenum map, GLsizei mapsize, const GLfloat *values )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   /* XXX someday, test against ctx->Const.MaxPixelMapTableSize */

-   if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) {

-      _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );

-      return;

-   }

-

-   if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) {

-      /* test that mapsize is a power of two */

-      if (!_mesa_is_pow_two(mapsize)) {

-	 _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );

-         return;

-      }

-   }

-

-   FLUSH_VERTICES(ctx, _NEW_PIXEL);

-

-   if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize,

-                            GL_INTENSITY, GL_FLOAT, values)) {

-      return;

-   }

-

-   values = (const GLfloat *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values);

-   if (!values) {

-      if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glPixelMapfv(PBO is mapped)");

-      }

-      return;

-   }

-

-   store_pixelmap(ctx, map, mapsize, values);

-

-   _mesa_unmap_pbo_source(ctx, &ctx->Unpack);

-}

-

-

-static void GLAPIENTRY

-_mesa_PixelMapuiv(GLenum map, GLsizei mapsize, const GLuint *values )

-{

-   GLfloat fvalues[MAX_PIXEL_MAP_TABLE];

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) {

-      _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" );

-      return;

-   }

-

-   if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) {

-      /* test that mapsize is a power of two */

-      if (!_mesa_is_pow_two(mapsize)) {

-	 _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" );

-         return;

-      }

-   }

-

-   FLUSH_VERTICES(ctx, _NEW_PIXEL);

-

-   if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize,

-                            GL_INTENSITY, GL_UNSIGNED_INT, values)) {

-      return;

-   }

-

-   values = (const GLuint *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values);

-   if (!values) {

-      if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glPixelMapuiv(PBO is mapped)");

-      }

-      return;

-   }

-

-   /* convert to floats */

-   if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) {

-      GLint i;

-      for (i = 0; i < mapsize; i++) {

-         fvalues[i] = (GLfloat) values[i];

-      }

-   }

-   else {

-      GLint i;

-      for (i = 0; i < mapsize; i++) {

-         fvalues[i] = UINT_TO_FLOAT( values[i] );

-      }

-   }

-

-   _mesa_unmap_pbo_source(ctx, &ctx->Unpack);

-

-   store_pixelmap(ctx, map, mapsize, fvalues);

-}

-

-

-static void GLAPIENTRY

-_mesa_PixelMapusv(GLenum map, GLsizei mapsize, const GLushort *values )

-{

-   GLfloat fvalues[MAX_PIXEL_MAP_TABLE];

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) {

-      _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapusv(mapsize)" );

-      return;

-   }

-

-   if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) {

-      /* test that mapsize is a power of two */

-      if (!_mesa_is_pow_two(mapsize)) {

-	 _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" );

-         return;

-      }

-   }

-

-   FLUSH_VERTICES(ctx, _NEW_PIXEL);

-

-   if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize,

-                            GL_INTENSITY, GL_UNSIGNED_SHORT, values)) {

-      return;

-   }

-

-   values = (const GLushort *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values);

-   if (!values) {

-      if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glPixelMapusv(PBO is mapped)");

-      }

-      return;

-   }

-

-   /* convert to floats */

-   if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) {

-      GLint i;

-      for (i = 0; i < mapsize; i++) {

-         fvalues[i] = (GLfloat) values[i];

-      }

-   }

-   else {

-      GLint i;

-      for (i = 0; i < mapsize; i++) {

-         fvalues[i] = USHORT_TO_FLOAT( values[i] );

-      }

-   }

-

-   _mesa_unmap_pbo_source(ctx, &ctx->Unpack);

-

-   store_pixelmap(ctx, map, mapsize, fvalues);

-}

-

-

-static void GLAPIENTRY

-_mesa_GetPixelMapfv( GLenum map, GLfloat *values )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLuint mapsize, i;

-   const struct gl_pixelmap *pm;

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   pm = get_pixelmap(ctx, map);

-   if (!pm) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapfv(map)");

-      return;

-   }

-

-   mapsize = pm->Size;

-

-   if (!validate_pbo_access(ctx, &ctx->Pack, mapsize,

-                            GL_INTENSITY, GL_FLOAT, values)) {

-      return;

-   }

-

-   values = (GLfloat *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values);

-   if (!values) {

-      if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glGetPixelMapfv(PBO is mapped)");

-      }

-      return;

-   }

-

-   if (map == GL_PIXEL_MAP_S_TO_S) {

-      /* special case */

-      for (i = 0; i < mapsize; i++) {

-         values[i] = (GLfloat) ctx->PixelMaps.StoS.Map[i];

-      }

-   }

-   else {

-      memcpy(values, pm->Map, mapsize * sizeof(GLfloat));

-   }

-

-   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);

-}

-

-

-static void GLAPIENTRY

-_mesa_GetPixelMapuiv( GLenum map, GLuint *values )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLint mapsize, i;

-   const struct gl_pixelmap *pm;

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   pm = get_pixelmap(ctx, map);

-   if (!pm) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapuiv(map)");

-      return;

-   }

-   mapsize = pm->Size;

-

-   if (!validate_pbo_access(ctx, &ctx->Pack, mapsize,

-                            GL_INTENSITY, GL_UNSIGNED_INT, values)) {

-      return;

-   }

-

-   values = (GLuint *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values);

-   if (!values) {

-      if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glGetPixelMapuiv(PBO is mapped)");

-      }

-      return;

-   }

-

-   if (map == GL_PIXEL_MAP_S_TO_S) {

-      /* special case */

-      memcpy(values, ctx->PixelMaps.StoS.Map, mapsize * sizeof(GLint));

-   }

-   else {

-      for (i = 0; i < mapsize; i++) {

-         values[i] = FLOAT_TO_UINT( pm->Map[i] );

-      }

-   }

-

-   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);

-}

-

-

-static void GLAPIENTRY

-_mesa_GetPixelMapusv( GLenum map, GLushort *values )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLint mapsize, i;

-   const struct gl_pixelmap *pm;

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   pm = get_pixelmap(ctx, map);

-   if (!pm) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapusv(map)");

-      return;

-   }

-   mapsize = pm->Size;

-

-   if (!validate_pbo_access(ctx, &ctx->Pack, mapsize,

-                            GL_INTENSITY, GL_UNSIGNED_SHORT, values)) {

-      return;

-   }

-

-   values = (GLushort *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values);

-   if (!values) {

-      if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glGetPixelMapusv(PBO is mapped)");

-      }

-      return;

-   }

-

-   switch (map) {

-   /* special cases */

-   case GL_PIXEL_MAP_I_TO_I:

-      for (i = 0; i < mapsize; i++) {

-         values[i] = (GLushort) CLAMP(ctx->PixelMaps.ItoI.Map[i], 0.0, 65535.);

-      }

-      break;

-   case GL_PIXEL_MAP_S_TO_S:

-      for (i = 0; i < mapsize; i++) {

-         values[i] = (GLushort) CLAMP(ctx->PixelMaps.StoS.Map[i], 0.0, 65535.);

-      }

-      break;

-   default:

-      for (i = 0; i < mapsize; i++) {

-         CLAMPED_FLOAT_TO_USHORT(values[i], pm->Map[i] );

-      }

-   }

-

-   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);

-}

-

-

-

-/**********************************************************************/

-/*****                       glPixelTransfer                      *****/

-/**********************************************************************/

-

-

-/*

- * Implements glPixelTransfer[fi] whether called immediately or from a

- * display list.

- */

-static void GLAPIENTRY

-_mesa_PixelTransferf( GLenum pname, GLfloat param )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   switch (pname) {

-      case GL_MAP_COLOR:

-         if (ctx->Pixel.MapColorFlag == (param ? GL_TRUE : GL_FALSE))

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.MapColorFlag = param ? GL_TRUE : GL_FALSE;

-	 break;

-      case GL_MAP_STENCIL:

-         if (ctx->Pixel.MapStencilFlag == (param ? GL_TRUE : GL_FALSE))

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.MapStencilFlag = param ? GL_TRUE : GL_FALSE;

-	 break;

-      case GL_INDEX_SHIFT:

-         if (ctx->Pixel.IndexShift == (GLint) param)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.IndexShift = (GLint) param;

-	 break;

-      case GL_INDEX_OFFSET:

-         if (ctx->Pixel.IndexOffset == (GLint) param)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.IndexOffset = (GLint) param;

-	 break;

-      case GL_RED_SCALE:

-         if (ctx->Pixel.RedScale == param)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.RedScale = param;

-	 break;

-      case GL_RED_BIAS:

-         if (ctx->Pixel.RedBias == param)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.RedBias = param;

-	 break;

-      case GL_GREEN_SCALE:

-         if (ctx->Pixel.GreenScale == param)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.GreenScale = param;

-	 break;

-      case GL_GREEN_BIAS:

-         if (ctx->Pixel.GreenBias == param)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.GreenBias = param;

-	 break;

-      case GL_BLUE_SCALE:

-         if (ctx->Pixel.BlueScale == param)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.BlueScale = param;

-	 break;

-      case GL_BLUE_BIAS:

-         if (ctx->Pixel.BlueBias == param)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.BlueBias = param;

-	 break;

-      case GL_ALPHA_SCALE:

-         if (ctx->Pixel.AlphaScale == param)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.AlphaScale = param;

-	 break;

-      case GL_ALPHA_BIAS:

-         if (ctx->Pixel.AlphaBias == param)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.AlphaBias = param;

-	 break;

-      case GL_DEPTH_SCALE:

-         if (ctx->Pixel.DepthScale == param)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.DepthScale = param;

-	 break;

-      case GL_DEPTH_BIAS:

-         if (ctx->Pixel.DepthBias == param)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_PIXEL);

-         ctx->Pixel.DepthBias = param;

-	 break;

-      default:

-         _mesa_error( ctx, GL_INVALID_ENUM, "glPixelTransfer(pname)" );

-         return;

-   }

-}

-

-

-static void GLAPIENTRY

-_mesa_PixelTransferi( GLenum pname, GLint param )

-{

-   _mesa_PixelTransferf( pname, (GLfloat) param );

-}

-

-

-

-/**********************************************************************/

-/*****                    State Management                        *****/

-/**********************************************************************/

-

-/*

- * Return a bitmask of IMAGE_*_BIT flags which to indicate which

- * pixel transfer operations are enabled.

- */

-static void

-update_image_transfer_state(struct gl_context *ctx)

-{

-   GLuint mask = 0;

-

-   if (ctx->Pixel.RedScale   != 1.0F || ctx->Pixel.RedBias   != 0.0F ||

-       ctx->Pixel.GreenScale != 1.0F || ctx->Pixel.GreenBias != 0.0F ||

-       ctx->Pixel.BlueScale  != 1.0F || ctx->Pixel.BlueBias  != 0.0F ||

-       ctx->Pixel.AlphaScale != 1.0F || ctx->Pixel.AlphaBias != 0.0F)

-      mask |= IMAGE_SCALE_BIAS_BIT;

-

-   if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset)

-      mask |= IMAGE_SHIFT_OFFSET_BIT;

-

-   if (ctx->Pixel.MapColorFlag)

-      mask |= IMAGE_MAP_COLOR_BIT;

-

-   ctx->_ImageTransferState = mask;

-}

-

-

-/**

- * Update mesa pixel transfer derived state.

- */

-void _mesa_update_pixel( struct gl_context *ctx, GLuint new_state )

-{

-   if (new_state & _MESA_NEW_TRANSFER_STATE)

-      update_image_transfer_state(ctx);

-}

-

-

-void

-_mesa_init_pixel_dispatch(struct _glapi_table *disp)

-{

-   SET_GetPixelMapfv(disp, _mesa_GetPixelMapfv);

-   SET_GetPixelMapuiv(disp, _mesa_GetPixelMapuiv);

-   SET_GetPixelMapusv(disp, _mesa_GetPixelMapusv);

-   SET_PixelMapfv(disp, _mesa_PixelMapfv);

-   SET_PixelMapuiv(disp, _mesa_PixelMapuiv);

-   SET_PixelMapusv(disp, _mesa_PixelMapusv);

-   SET_PixelTransferf(disp, _mesa_PixelTransferf);

-   SET_PixelTransferi(disp, _mesa_PixelTransferi);

-   SET_PixelZoom(disp, _mesa_PixelZoom);

-}

-

-

-#endif /* FEATURE_pixel_transfer */

-

-

-/**********************************************************************/

-/*****                      Initialization                        *****/

-/**********************************************************************/

-

-static void

-init_pixelmap(struct gl_pixelmap *map)

-{

-   map->Size = 1;

-   map->Map[0] = 0.0;

-   map->Map8[0] = 0;

-}

-

-

-/**

- * Initialize the context's PIXEL attribute group.

- */

-void

-_mesa_init_pixel( struct gl_context *ctx )

-{

-   /* Pixel group */

-   ctx->Pixel.RedBias = 0.0;

-   ctx->Pixel.RedScale = 1.0;

-   ctx->Pixel.GreenBias = 0.0;

-   ctx->Pixel.GreenScale = 1.0;

-   ctx->Pixel.BlueBias = 0.0;

-   ctx->Pixel.BlueScale = 1.0;

-   ctx->Pixel.AlphaBias = 0.0;

-   ctx->Pixel.AlphaScale = 1.0;

-   ctx->Pixel.DepthBias = 0.0;

-   ctx->Pixel.DepthScale = 1.0;

-   ctx->Pixel.IndexOffset = 0;

-   ctx->Pixel.IndexShift = 0;

-   ctx->Pixel.ZoomX = 1.0;

-   ctx->Pixel.ZoomY = 1.0;

-   ctx->Pixel.MapColorFlag = GL_FALSE;

-   ctx->Pixel.MapStencilFlag = GL_FALSE;

-   init_pixelmap(&ctx->PixelMaps.StoS);

-   init_pixelmap(&ctx->PixelMaps.ItoI);

-   init_pixelmap(&ctx->PixelMaps.ItoR);

-   init_pixelmap(&ctx->PixelMaps.ItoG);

-   init_pixelmap(&ctx->PixelMaps.ItoB);

-   init_pixelmap(&ctx->PixelMaps.ItoA);

-   init_pixelmap(&ctx->PixelMaps.RtoR);

-   init_pixelmap(&ctx->PixelMaps.GtoG);

-   init_pixelmap(&ctx->PixelMaps.BtoB);

-   init_pixelmap(&ctx->PixelMaps.AtoA);

-   /* GL_SGI_texture_color_table */

-   ASSIGN_4V(ctx->Pixel.TextureColorTableScale, 1.0, 1.0, 1.0, 1.0);

-   ASSIGN_4V(ctx->Pixel.TextureColorTableBias, 0.0, 0.0, 0.0, 0.0);

-

-   if (ctx->Visual.doubleBufferMode) {

-      ctx->Pixel.ReadBuffer = GL_BACK;

-   }

-   else {

-      ctx->Pixel.ReadBuffer = GL_FRONT;

-   }

-

-   /* Miscellaneous */

-   ctx->_ImageTransferState = 0;

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * \file pixel.c
+ * Pixel transfer functions (glPixelZoom, glPixelMap, glPixelTransfer)
+ */
+
+#include "glheader.h"
+#include "bufferobj.h"
+#include "colormac.h"
+#include "context.h"
+#include "macros.h"
+#include "mfeatures.h"
+#include "pixel.h"
+#include "pbo.h"
+#include "mtypes.h"
+#include "main/dispatch.h"
+
+
+#if FEATURE_pixel_transfer
+
+
+/**********************************************************************/
+/*****                    glPixelZoom                             *****/
+/**********************************************************************/
+
+static void GLAPIENTRY
+_mesa_PixelZoom( GLfloat xfactor, GLfloat yfactor )
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (ctx->Pixel.ZoomX == xfactor &&
+       ctx->Pixel.ZoomY == yfactor)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_PIXEL);
+   ctx->Pixel.ZoomX = xfactor;
+   ctx->Pixel.ZoomY = yfactor;
+}
+
+
+
+/**********************************************************************/
+/*****                         glPixelMap                         *****/
+/**********************************************************************/
+
+/**
+ * Return pointer to a pixelmap by name.
+ */
+static struct gl_pixelmap *
+get_pixelmap(struct gl_context *ctx, GLenum map)
+{
+   switch (map) {
+   case GL_PIXEL_MAP_I_TO_I:
+      return &ctx->PixelMaps.ItoI;
+   case GL_PIXEL_MAP_S_TO_S:
+      return &ctx->PixelMaps.StoS;
+   case GL_PIXEL_MAP_I_TO_R:
+      return &ctx->PixelMaps.ItoR;
+   case GL_PIXEL_MAP_I_TO_G:
+      return &ctx->PixelMaps.ItoG;
+   case GL_PIXEL_MAP_I_TO_B:
+      return &ctx->PixelMaps.ItoB;
+   case GL_PIXEL_MAP_I_TO_A:
+      return &ctx->PixelMaps.ItoA;
+   case GL_PIXEL_MAP_R_TO_R:
+      return &ctx->PixelMaps.RtoR;
+   case GL_PIXEL_MAP_G_TO_G:
+      return &ctx->PixelMaps.GtoG;
+   case GL_PIXEL_MAP_B_TO_B:
+      return &ctx->PixelMaps.BtoB;
+   case GL_PIXEL_MAP_A_TO_A:
+      return &ctx->PixelMaps.AtoA;
+   default:
+      return NULL;
+   }
+}
+
+
+/**
+ * Helper routine used by the other _mesa_PixelMap() functions.
+ */
+static void
+store_pixelmap(struct gl_context *ctx, GLenum map, GLsizei mapsize,
+               const GLfloat *values)
+{
+   GLint i;
+   struct gl_pixelmap *pm = get_pixelmap(ctx, map);
+   if (!pm) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glPixelMap(map)");
+      return;
+   }
+
+   switch (map) {
+   case GL_PIXEL_MAP_S_TO_S:
+      /* special case */
+      ctx->PixelMaps.StoS.Size = mapsize;
+      for (i = 0; i < mapsize; i++) {
+         ctx->PixelMaps.StoS.Map[i] = (GLfloat)IROUND(values[i]);
+      }
+      break;
+   case GL_PIXEL_MAP_I_TO_I:
+      /* special case */
+      ctx->PixelMaps.ItoI.Size = mapsize;
+      for (i = 0; i < mapsize; i++) {
+         ctx->PixelMaps.ItoI.Map[i] = values[i];
+      }
+      break;
+   default:
+      /* general case */
+      pm->Size = mapsize;
+      for (i = 0; i < mapsize; i++) {
+         GLfloat val = CLAMP(values[i], 0.0F, 1.0F);
+         pm->Map[i] = val;
+         pm->Map8[i] = (GLint) (val * 255.0F);
+      }
+   }
+}
+
+
+/**
+ * Convenience wrapper for _mesa_validate_pbo_access() for gl[Get]PixelMap().
+ */
+static GLboolean
+validate_pbo_access(struct gl_context *ctx, struct gl_pixelstore_attrib *pack,
+                    GLsizei mapsize, GLenum format, GLenum type,
+                    const GLvoid *ptr)
+{
+   GLboolean ok;
+
+   /* Note, need to use DefaultPacking and Unpack's buffer object */
+   _mesa_reference_buffer_object(ctx,
+                                 &ctx->DefaultPacking.BufferObj,
+                                 pack->BufferObj);
+
+   ok = _mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1,
+                                  format, type, ptr);
+
+   /* restore */
+   _mesa_reference_buffer_object(ctx,
+                                 &ctx->DefaultPacking.BufferObj,
+                                 ctx->Shared->NullBufferObj);
+
+   if (!ok) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glPixelMap(invalid PBO access)");
+   }
+   return ok;
+}
+
+
+static void GLAPIENTRY
+_mesa_PixelMapfv( GLenum map, GLsizei mapsize, const GLfloat *values )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   /* XXX someday, test against ctx->Const.MaxPixelMapTableSize */
+   if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );
+      return;
+   }
+
+   if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) {
+      /* test that mapsize is a power of two */
+      if (!_mesa_is_pow_two(mapsize)) {
+	 _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );
+         return;
+      }
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_PIXEL);
+
+   if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize,
+                            GL_INTENSITY, GL_FLOAT, values)) {
+      return;
+   }
+
+   values = (const GLfloat *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values);
+   if (!values) {
+      if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glPixelMapfv(PBO is mapped)");
+      }
+      return;
+   }
+
+   store_pixelmap(ctx, map, mapsize, values);
+
+   _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
+}
+
+
+static void GLAPIENTRY
+_mesa_PixelMapuiv(GLenum map, GLsizei mapsize, const GLuint *values )
+{
+   GLfloat fvalues[MAX_PIXEL_MAP_TABLE];
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" );
+      return;
+   }
+
+   if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) {
+      /* test that mapsize is a power of two */
+      if (!_mesa_is_pow_two(mapsize)) {
+	 _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" );
+         return;
+      }
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_PIXEL);
+
+   if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize,
+                            GL_INTENSITY, GL_UNSIGNED_INT, values)) {
+      return;
+   }
+
+   values = (const GLuint *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values);
+   if (!values) {
+      if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glPixelMapuiv(PBO is mapped)");
+      }
+      return;
+   }
+
+   /* convert to floats */
+   if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) {
+      GLint i;
+      for (i = 0; i < mapsize; i++) {
+         fvalues[i] = (GLfloat) values[i];
+      }
+   }
+   else {
+      GLint i;
+      for (i = 0; i < mapsize; i++) {
+         fvalues[i] = UINT_TO_FLOAT( values[i] );
+      }
+   }
+
+   _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
+
+   store_pixelmap(ctx, map, mapsize, fvalues);
+}
+
+
+static void GLAPIENTRY
+_mesa_PixelMapusv(GLenum map, GLsizei mapsize, const GLushort *values )
+{
+   GLfloat fvalues[MAX_PIXEL_MAP_TABLE];
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapusv(mapsize)" );
+      return;
+   }
+
+   if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) {
+      /* test that mapsize is a power of two */
+      if (!_mesa_is_pow_two(mapsize)) {
+	 _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" );
+         return;
+      }
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_PIXEL);
+
+   if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize,
+                            GL_INTENSITY, GL_UNSIGNED_SHORT, values)) {
+      return;
+   }
+
+   values = (const GLushort *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values);
+   if (!values) {
+      if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glPixelMapusv(PBO is mapped)");
+      }
+      return;
+   }
+
+   /* convert to floats */
+   if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) {
+      GLint i;
+      for (i = 0; i < mapsize; i++) {
+         fvalues[i] = (GLfloat) values[i];
+      }
+   }
+   else {
+      GLint i;
+      for (i = 0; i < mapsize; i++) {
+         fvalues[i] = USHORT_TO_FLOAT( values[i] );
+      }
+   }
+
+   _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
+
+   store_pixelmap(ctx, map, mapsize, fvalues);
+}
+
+
+static void GLAPIENTRY
+_mesa_GetPixelMapfv( GLenum map, GLfloat *values )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLuint mapsize, i;
+   const struct gl_pixelmap *pm;
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   pm = get_pixelmap(ctx, map);
+   if (!pm) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapfv(map)");
+      return;
+   }
+
+   mapsize = pm->Size;
+
+   if (!validate_pbo_access(ctx, &ctx->Pack, mapsize,
+                            GL_INTENSITY, GL_FLOAT, values)) {
+      return;
+   }
+
+   values = (GLfloat *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values);
+   if (!values) {
+      if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glGetPixelMapfv(PBO is mapped)");
+      }
+      return;
+   }
+
+   if (map == GL_PIXEL_MAP_S_TO_S) {
+      /* special case */
+      for (i = 0; i < mapsize; i++) {
+         values[i] = (GLfloat) ctx->PixelMaps.StoS.Map[i];
+      }
+   }
+   else {
+      memcpy(values, pm->Map, mapsize * sizeof(GLfloat));
+   }
+
+   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
+}
+
+
+static void GLAPIENTRY
+_mesa_GetPixelMapuiv( GLenum map, GLuint *values )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLint mapsize, i;
+   const struct gl_pixelmap *pm;
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   pm = get_pixelmap(ctx, map);
+   if (!pm) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapuiv(map)");
+      return;
+   }
+   mapsize = pm->Size;
+
+   if (!validate_pbo_access(ctx, &ctx->Pack, mapsize,
+                            GL_INTENSITY, GL_UNSIGNED_INT, values)) {
+      return;
+   }
+
+   values = (GLuint *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values);
+   if (!values) {
+      if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glGetPixelMapuiv(PBO is mapped)");
+      }
+      return;
+   }
+
+   if (map == GL_PIXEL_MAP_S_TO_S) {
+      /* special case */
+      memcpy(values, ctx->PixelMaps.StoS.Map, mapsize * sizeof(GLint));
+   }
+   else {
+      for (i = 0; i < mapsize; i++) {
+         values[i] = FLOAT_TO_UINT( pm->Map[i] );
+      }
+   }
+
+   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
+}
+
+
+static void GLAPIENTRY
+_mesa_GetPixelMapusv( GLenum map, GLushort *values )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLint mapsize, i;
+   const struct gl_pixelmap *pm;
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   pm = get_pixelmap(ctx, map);
+   if (!pm) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapusv(map)");
+      return;
+   }
+   mapsize = pm->Size;
+
+   if (!validate_pbo_access(ctx, &ctx->Pack, mapsize,
+                            GL_INTENSITY, GL_UNSIGNED_SHORT, values)) {
+      return;
+   }
+
+   values = (GLushort *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values);
+   if (!values) {
+      if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glGetPixelMapusv(PBO is mapped)");
+      }
+      return;
+   }
+
+   switch (map) {
+   /* special cases */
+   case GL_PIXEL_MAP_I_TO_I:
+      for (i = 0; i < mapsize; i++) {
+         values[i] = (GLushort) CLAMP(ctx->PixelMaps.ItoI.Map[i], 0.0, 65535.);
+      }
+      break;
+   case GL_PIXEL_MAP_S_TO_S:
+      for (i = 0; i < mapsize; i++) {
+         values[i] = (GLushort) CLAMP(ctx->PixelMaps.StoS.Map[i], 0.0, 65535.);
+      }
+      break;
+   default:
+      for (i = 0; i < mapsize; i++) {
+         CLAMPED_FLOAT_TO_USHORT(values[i], pm->Map[i] );
+      }
+   }
+
+   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
+}
+
+
+
+/**********************************************************************/
+/*****                       glPixelTransfer                      *****/
+/**********************************************************************/
+
+
+/*
+ * Implements glPixelTransfer[fi] whether called immediately or from a
+ * display list.
+ */
+static void GLAPIENTRY
+_mesa_PixelTransferf( GLenum pname, GLfloat param )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   switch (pname) {
+      case GL_MAP_COLOR:
+         if (ctx->Pixel.MapColorFlag == (param ? GL_TRUE : GL_FALSE))
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.MapColorFlag = param ? GL_TRUE : GL_FALSE;
+	 break;
+      case GL_MAP_STENCIL:
+         if (ctx->Pixel.MapStencilFlag == (param ? GL_TRUE : GL_FALSE))
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.MapStencilFlag = param ? GL_TRUE : GL_FALSE;
+	 break;
+      case GL_INDEX_SHIFT:
+         if (ctx->Pixel.IndexShift == (GLint) param)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.IndexShift = (GLint) param;
+	 break;
+      case GL_INDEX_OFFSET:
+         if (ctx->Pixel.IndexOffset == (GLint) param)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.IndexOffset = (GLint) param;
+	 break;
+      case GL_RED_SCALE:
+         if (ctx->Pixel.RedScale == param)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.RedScale = param;
+	 break;
+      case GL_RED_BIAS:
+         if (ctx->Pixel.RedBias == param)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.RedBias = param;
+	 break;
+      case GL_GREEN_SCALE:
+         if (ctx->Pixel.GreenScale == param)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.GreenScale = param;
+	 break;
+      case GL_GREEN_BIAS:
+         if (ctx->Pixel.GreenBias == param)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.GreenBias = param;
+	 break;
+      case GL_BLUE_SCALE:
+         if (ctx->Pixel.BlueScale == param)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.BlueScale = param;
+	 break;
+      case GL_BLUE_BIAS:
+         if (ctx->Pixel.BlueBias == param)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.BlueBias = param;
+	 break;
+      case GL_ALPHA_SCALE:
+         if (ctx->Pixel.AlphaScale == param)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.AlphaScale = param;
+	 break;
+      case GL_ALPHA_BIAS:
+         if (ctx->Pixel.AlphaBias == param)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.AlphaBias = param;
+	 break;
+      case GL_DEPTH_SCALE:
+         if (ctx->Pixel.DepthScale == param)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.DepthScale = param;
+	 break;
+      case GL_DEPTH_BIAS:
+         if (ctx->Pixel.DepthBias == param)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_PIXEL);
+         ctx->Pixel.DepthBias = param;
+	 break;
+      default:
+         _mesa_error( ctx, GL_INVALID_ENUM, "glPixelTransfer(pname)" );
+         return;
+   }
+}
+
+
+static void GLAPIENTRY
+_mesa_PixelTransferi( GLenum pname, GLint param )
+{
+   _mesa_PixelTransferf( pname, (GLfloat) param );
+}
+
+
+
+/**********************************************************************/
+/*****                    State Management                        *****/
+/**********************************************************************/
+
+/*
+ * Return a bitmask of IMAGE_*_BIT flags which to indicate which
+ * pixel transfer operations are enabled.
+ */
+static void
+update_image_transfer_state(struct gl_context *ctx)
+{
+   GLuint mask = 0;
+
+   if (ctx->Pixel.RedScale   != 1.0F || ctx->Pixel.RedBias   != 0.0F ||
+       ctx->Pixel.GreenScale != 1.0F || ctx->Pixel.GreenBias != 0.0F ||
+       ctx->Pixel.BlueScale  != 1.0F || ctx->Pixel.BlueBias  != 0.0F ||
+       ctx->Pixel.AlphaScale != 1.0F || ctx->Pixel.AlphaBias != 0.0F)
+      mask |= IMAGE_SCALE_BIAS_BIT;
+
+   if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset)
+      mask |= IMAGE_SHIFT_OFFSET_BIT;
+
+   if (ctx->Pixel.MapColorFlag)
+      mask |= IMAGE_MAP_COLOR_BIT;
+
+   ctx->_ImageTransferState = mask;
+}
+
+
+/**
+ * Update mesa pixel transfer derived state.
+ */
+void _mesa_update_pixel( struct gl_context *ctx, GLuint new_state )
+{
+   if (new_state & _MESA_NEW_TRANSFER_STATE)
+      update_image_transfer_state(ctx);
+}
+
+
+void
+_mesa_init_pixel_dispatch(struct _glapi_table *disp)
+{
+   SET_GetPixelMapfv(disp, _mesa_GetPixelMapfv);
+   SET_GetPixelMapuiv(disp, _mesa_GetPixelMapuiv);
+   SET_GetPixelMapusv(disp, _mesa_GetPixelMapusv);
+   SET_PixelMapfv(disp, _mesa_PixelMapfv);
+   SET_PixelMapuiv(disp, _mesa_PixelMapuiv);
+   SET_PixelMapusv(disp, _mesa_PixelMapusv);
+   SET_PixelTransferf(disp, _mesa_PixelTransferf);
+   SET_PixelTransferi(disp, _mesa_PixelTransferi);
+   SET_PixelZoom(disp, _mesa_PixelZoom);
+}
+
+
+#endif /* FEATURE_pixel_transfer */
+
+
+/**********************************************************************/
+/*****                      Initialization                        *****/
+/**********************************************************************/
+
+static void
+init_pixelmap(struct gl_pixelmap *map)
+{
+   map->Size = 1;
+   map->Map[0] = 0.0;
+   map->Map8[0] = 0;
+}
+
+
+/**
+ * Initialize the context's PIXEL attribute group.
+ */
+void
+_mesa_init_pixel( struct gl_context *ctx )
+{
+   /* Pixel group */
+   ctx->Pixel.RedBias = 0.0;
+   ctx->Pixel.RedScale = 1.0;
+   ctx->Pixel.GreenBias = 0.0;
+   ctx->Pixel.GreenScale = 1.0;
+   ctx->Pixel.BlueBias = 0.0;
+   ctx->Pixel.BlueScale = 1.0;
+   ctx->Pixel.AlphaBias = 0.0;
+   ctx->Pixel.AlphaScale = 1.0;
+   ctx->Pixel.DepthBias = 0.0;
+   ctx->Pixel.DepthScale = 1.0;
+   ctx->Pixel.IndexOffset = 0;
+   ctx->Pixel.IndexShift = 0;
+   ctx->Pixel.ZoomX = 1.0;
+   ctx->Pixel.ZoomY = 1.0;
+   ctx->Pixel.MapColorFlag = GL_FALSE;
+   ctx->Pixel.MapStencilFlag = GL_FALSE;
+   init_pixelmap(&ctx->PixelMaps.StoS);
+   init_pixelmap(&ctx->PixelMaps.ItoI);
+   init_pixelmap(&ctx->PixelMaps.ItoR);
+   init_pixelmap(&ctx->PixelMaps.ItoG);
+   init_pixelmap(&ctx->PixelMaps.ItoB);
+   init_pixelmap(&ctx->PixelMaps.ItoA);
+   init_pixelmap(&ctx->PixelMaps.RtoR);
+   init_pixelmap(&ctx->PixelMaps.GtoG);
+   init_pixelmap(&ctx->PixelMaps.BtoB);
+   init_pixelmap(&ctx->PixelMaps.AtoA);
+
+   if (ctx->Visual.doubleBufferMode) {
+      ctx->Pixel.ReadBuffer = GL_BACK;
+   }
+   else {
+      ctx->Pixel.ReadBuffer = GL_FRONT;
+   }
+
+   /* Miscellaneous */
+   ctx->_ImageTransferState = 0;
+}
diff --git a/mesalib/src/mesa/main/polygon.c b/mesalib/src/mesa/main/polygon.c
index 71ef929fc..ff4232ecc 100644
--- a/mesalib/src/mesa/main/polygon.c
+++ b/mesalib/src/mesa/main/polygon.c
@@ -1,322 +1,322 @@
-/**

- * \file polygon.c

- * Polygon operations.

- */

-

-/*

- * Mesa 3-D graphics library

- * Version:  6.5.1

- *

- * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-#include "glheader.h"

-#include "imports.h"

-#include "bufferobj.h"

-#include "context.h"

-#include "image.h"

-#include "enums.h"

-#include "pack.h"

-#include "polygon.h"

-#include "mtypes.h"

-

-

-/**

- * Specify whether to cull front- or back-facing facets.

- *

- * \param mode culling mode.

- *

- * \sa glCullFace().

- *

- * Verifies the parameter and updates gl_polygon_attrib::CullFaceMode. On

- * change, flushes the vertices and notifies the driver via

- * the dd_function_table::CullFace callback.

- */

-void GLAPIENTRY

-_mesa_CullFace( GLenum mode )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (MESA_VERBOSE&VERBOSE_API)

-      _mesa_debug(ctx, "glCullFace %s\n", _mesa_lookup_enum_by_nr(mode));

-

-   if (mode!=GL_FRONT && mode!=GL_BACK && mode!=GL_FRONT_AND_BACK) {

-      _mesa_error( ctx, GL_INVALID_ENUM, "glCullFace" );

-      return;

-   }

-

-   if (ctx->Polygon.CullFaceMode == mode)

-      return;

-

-   FLUSH_VERTICES(ctx, _NEW_POLYGON);

-   ctx->Polygon.CullFaceMode = mode;

-

-   if (ctx->Driver.CullFace)

-      ctx->Driver.CullFace( ctx, mode );

-}

-

-

-/**

- * Define front- and back-facing 

- *

- * \param mode orientation of front-facing polygons.

- *

- * \sa glFrontFace().

- *

- * Verifies the parameter and updates gl_polygon_attrib::FrontFace. On change

- * flushes the vertices and notifies the driver via

- * the dd_function_table::FrontFace callback.

- */

-void GLAPIENTRY

-_mesa_FrontFace( GLenum mode )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (MESA_VERBOSE&VERBOSE_API)

-      _mesa_debug(ctx, "glFrontFace %s\n", _mesa_lookup_enum_by_nr(mode));

-

-   if (mode!=GL_CW && mode!=GL_CCW) {

-      _mesa_error( ctx, GL_INVALID_ENUM, "glFrontFace" );

-      return;

-   }

-

-   if (ctx->Polygon.FrontFace == mode)

-      return;

-

-   FLUSH_VERTICES(ctx, _NEW_POLYGON);

-   ctx->Polygon.FrontFace = mode;

-

-   ctx->Polygon._FrontBit = (GLboolean) (mode == GL_CW);

-

-   if (ctx->Driver.FrontFace)

-      ctx->Driver.FrontFace( ctx, mode );

-}

-

-

-/**

- * Set the polygon rasterization mode.

- *

- * \param face the polygons which \p mode applies to.

- * \param mode how polygons should be rasterized.

- *

- * \sa glPolygonMode(). 

- * 

- * Verifies the parameters and updates gl_polygon_attrib::FrontMode and

- * gl_polygon_attrib::BackMode. On change flushes the vertices and notifies the

- * driver via the dd_function_table::PolygonMode callback.

- */

-void GLAPIENTRY

-_mesa_PolygonMode( GLenum face, GLenum mode )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (MESA_VERBOSE&VERBOSE_API)

-      _mesa_debug(ctx, "glPolygonMode %s %s\n",

-                  _mesa_lookup_enum_by_nr(face),

-                  _mesa_lookup_enum_by_nr(mode));

-

-   if (mode!=GL_POINT && mode!=GL_LINE && mode!=GL_FILL) {

-      _mesa_error( ctx, GL_INVALID_ENUM, "glPolygonMode(mode)" );

-      return;

-   }

-

-   switch (face) {

-   case GL_FRONT:

-      if (ctx->Polygon.FrontMode == mode)

-	 return;

-      FLUSH_VERTICES(ctx, _NEW_POLYGON);

-      ctx->Polygon.FrontMode = mode;

-      break;

-   case GL_FRONT_AND_BACK:

-      if (ctx->Polygon.FrontMode == mode &&

-	  ctx->Polygon.BackMode == mode)

-	 return;

-      FLUSH_VERTICES(ctx, _NEW_POLYGON);

-      ctx->Polygon.FrontMode = mode;

-      ctx->Polygon.BackMode = mode;

-      break;

-   case GL_BACK:

-      if (ctx->Polygon.BackMode == mode)

-	 return;

-      FLUSH_VERTICES(ctx, _NEW_POLYGON);

-      ctx->Polygon.BackMode = mode;

-      break;

-   default:

-      _mesa_error( ctx, GL_INVALID_ENUM, "glPolygonMode(face)" );

-      return;

-   }

-

-   if (ctx->Polygon.FrontMode == GL_FILL && ctx->Polygon.BackMode == GL_FILL)

-      ctx->_TriangleCaps &= ~DD_TRI_UNFILLED;

-   else

-      ctx->_TriangleCaps |= DD_TRI_UNFILLED;

-

-   if (ctx->Driver.PolygonMode)

-      ctx->Driver.PolygonMode(ctx, face, mode);

-}

-

-#if _HAVE_FULL_GL

-

-

-/**

- * This routine updates the ctx->Polygon.Stipple state.

- * If we're getting the stipple data from a PBO, we map the buffer

- * in order to access the data.

- * In any case, we obey the current pixel unpacking parameters when fetching

- * the stipple data.

- *

- * In the future, this routine should be used as a fallback, called via

- * ctx->Driver.PolygonStipple().  We'll have to update all the DRI drivers

- * too.

- */

-void

-_mesa_polygon_stipple(struct gl_context *ctx, const GLubyte *pattern)

-{

-   pattern = _mesa_map_validate_pbo_source(ctx, 2,

-                                           &ctx->Unpack, 32, 32, 1,

-                                           GL_COLOR_INDEX, GL_BITMAP, pattern,

-                                           "glPolygonStipple");

-   if (!pattern)

-      return;

-

-   _mesa_unpack_polygon_stipple(pattern, ctx->PolygonStipple, &ctx->Unpack);

-

-   _mesa_unmap_pbo_source(ctx, &ctx->Unpack);

-}

-

-

-/**

- * Called by glPolygonStipple.

- */

-void GLAPIENTRY

-_mesa_PolygonStipple( const GLubyte *pattern )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (MESA_VERBOSE&VERBOSE_API)

-      _mesa_debug(ctx, "glPolygonStipple\n");

-

-   FLUSH_VERTICES(ctx, _NEW_POLYGONSTIPPLE);

-

-   _mesa_polygon_stipple(ctx, pattern);

-

-   if (ctx->Driver.PolygonStipple)

-      ctx->Driver.PolygonStipple(ctx, pattern);

-}

-

-

-/**

- * Called by glPolygonStipple.

- */

-void GLAPIENTRY

-_mesa_GetPolygonStipple( GLubyte *dest )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (MESA_VERBOSE&VERBOSE_API)

-      _mesa_debug(ctx, "glGetPolygonStipple\n");

-

-   dest = _mesa_map_validate_pbo_dest(ctx, 2,

-                                      &ctx->Pack, 32, 32, 1,

-                                      GL_COLOR_INDEX, GL_BITMAP, dest,

-                                      "glGetPolygonStipple");

-   if (!dest)

-      return;

-

-   _mesa_pack_polygon_stipple(ctx->PolygonStipple, dest, &ctx->Pack);

-

-   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);

-}

-

-

-void GLAPIENTRY

-_mesa_PolygonOffset( GLfloat factor, GLfloat units )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (MESA_VERBOSE&VERBOSE_API)

-      _mesa_debug(ctx, "glPolygonOffset %f %f\n", factor, units);

-

-   if (ctx->Polygon.OffsetFactor == factor &&

-       ctx->Polygon.OffsetUnits == units)

-      return;

-

-   FLUSH_VERTICES(ctx, _NEW_POLYGON);

-   ctx->Polygon.OffsetFactor = factor;

-   ctx->Polygon.OffsetUnits = units;

-

-   if (ctx->Driver.PolygonOffset)

-      ctx->Driver.PolygonOffset( ctx, factor, units );

-}

-

-

-void GLAPIENTRY

-_mesa_PolygonOffsetEXT( GLfloat factor, GLfloat bias )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   /* XXX mult by DepthMaxF here??? */

-   _mesa_PolygonOffset(factor, bias * ctx->DrawBuffer->_DepthMaxF );

-}

-

-#endif

-

-

-/**********************************************************************/

-/** \name Initialization */

-/*@{*/

-

-/**

- * Initialize the context polygon state.

- *

- * \param ctx GL context.

- *

- * Initializes __struct gl_contextRec::Polygon and __struct gl_contextRec::PolygonStipple

- * attribute groups.

- */

-void _mesa_init_polygon( struct gl_context * ctx )

-{

-   /* Polygon group */

-   ctx->Polygon.CullFlag = GL_FALSE;

-   ctx->Polygon.CullFaceMode = GL_BACK;

-   ctx->Polygon.FrontFace = GL_CCW;

-   ctx->Polygon._FrontBit = 0;

-   ctx->Polygon.FrontMode = GL_FILL;

-   ctx->Polygon.BackMode = GL_FILL;

-   ctx->Polygon.SmoothFlag = GL_FALSE;

-   ctx->Polygon.StippleFlag = GL_FALSE;

-   ctx->Polygon.OffsetFactor = 0.0F;

-   ctx->Polygon.OffsetUnits = 0.0F;

-   ctx->Polygon.OffsetPoint = GL_FALSE;

-   ctx->Polygon.OffsetLine = GL_FALSE;

-   ctx->Polygon.OffsetFill = GL_FALSE;

-

-

-   /* Polygon Stipple group */

-   memset( ctx->PolygonStipple, 0xff, 32*sizeof(GLuint) );

-}

-

-/*@}*/

+/**
+ * \file polygon.c
+ * Polygon operations.
+ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.1
+ *
+ * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "glheader.h"
+#include "imports.h"
+#include "context.h"
+#include "image.h"
+#include "enums.h"
+#include "pack.h"
+#include "pbo.h"
+#include "polygon.h"
+#include "mtypes.h"
+
+
+/**
+ * Specify whether to cull front- or back-facing facets.
+ *
+ * \param mode culling mode.
+ *
+ * \sa glCullFace().
+ *
+ * Verifies the parameter and updates gl_polygon_attrib::CullFaceMode. On
+ * change, flushes the vertices and notifies the driver via
+ * the dd_function_table::CullFace callback.
+ */
+void GLAPIENTRY
+_mesa_CullFace( GLenum mode )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      _mesa_debug(ctx, "glCullFace %s\n", _mesa_lookup_enum_by_nr(mode));
+
+   if (mode!=GL_FRONT && mode!=GL_BACK && mode!=GL_FRONT_AND_BACK) {
+      _mesa_error( ctx, GL_INVALID_ENUM, "glCullFace" );
+      return;
+   }
+
+   if (ctx->Polygon.CullFaceMode == mode)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_POLYGON);
+   ctx->Polygon.CullFaceMode = mode;
+
+   if (ctx->Driver.CullFace)
+      ctx->Driver.CullFace( ctx, mode );
+}
+
+
+/**
+ * Define front- and back-facing 
+ *
+ * \param mode orientation of front-facing polygons.
+ *
+ * \sa glFrontFace().
+ *
+ * Verifies the parameter and updates gl_polygon_attrib::FrontFace. On change
+ * flushes the vertices and notifies the driver via
+ * the dd_function_table::FrontFace callback.
+ */
+void GLAPIENTRY
+_mesa_FrontFace( GLenum mode )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      _mesa_debug(ctx, "glFrontFace %s\n", _mesa_lookup_enum_by_nr(mode));
+
+   if (mode!=GL_CW && mode!=GL_CCW) {
+      _mesa_error( ctx, GL_INVALID_ENUM, "glFrontFace" );
+      return;
+   }
+
+   if (ctx->Polygon.FrontFace == mode)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_POLYGON);
+   ctx->Polygon.FrontFace = mode;
+
+   ctx->Polygon._FrontBit = (GLboolean) (mode == GL_CW);
+
+   if (ctx->Driver.FrontFace)
+      ctx->Driver.FrontFace( ctx, mode );
+}
+
+
+/**
+ * Set the polygon rasterization mode.
+ *
+ * \param face the polygons which \p mode applies to.
+ * \param mode how polygons should be rasterized.
+ *
+ * \sa glPolygonMode(). 
+ * 
+ * Verifies the parameters and updates gl_polygon_attrib::FrontMode and
+ * gl_polygon_attrib::BackMode. On change flushes the vertices and notifies the
+ * driver via the dd_function_table::PolygonMode callback.
+ */
+void GLAPIENTRY
+_mesa_PolygonMode( GLenum face, GLenum mode )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      _mesa_debug(ctx, "glPolygonMode %s %s\n",
+                  _mesa_lookup_enum_by_nr(face),
+                  _mesa_lookup_enum_by_nr(mode));
+
+   if (mode!=GL_POINT && mode!=GL_LINE && mode!=GL_FILL) {
+      _mesa_error( ctx, GL_INVALID_ENUM, "glPolygonMode(mode)" );
+      return;
+   }
+
+   switch (face) {
+   case GL_FRONT:
+      if (ctx->Polygon.FrontMode == mode)
+	 return;
+      FLUSH_VERTICES(ctx, _NEW_POLYGON);
+      ctx->Polygon.FrontMode = mode;
+      break;
+   case GL_FRONT_AND_BACK:
+      if (ctx->Polygon.FrontMode == mode &&
+	  ctx->Polygon.BackMode == mode)
+	 return;
+      FLUSH_VERTICES(ctx, _NEW_POLYGON);
+      ctx->Polygon.FrontMode = mode;
+      ctx->Polygon.BackMode = mode;
+      break;
+   case GL_BACK:
+      if (ctx->Polygon.BackMode == mode)
+	 return;
+      FLUSH_VERTICES(ctx, _NEW_POLYGON);
+      ctx->Polygon.BackMode = mode;
+      break;
+   default:
+      _mesa_error( ctx, GL_INVALID_ENUM, "glPolygonMode(face)" );
+      return;
+   }
+
+   if (ctx->Polygon.FrontMode == GL_FILL && ctx->Polygon.BackMode == GL_FILL)
+      ctx->_TriangleCaps &= ~DD_TRI_UNFILLED;
+   else
+      ctx->_TriangleCaps |= DD_TRI_UNFILLED;
+
+   if (ctx->Driver.PolygonMode)
+      ctx->Driver.PolygonMode(ctx, face, mode);
+}
+
+#if _HAVE_FULL_GL
+
+
+/**
+ * This routine updates the ctx->Polygon.Stipple state.
+ * If we're getting the stipple data from a PBO, we map the buffer
+ * in order to access the data.
+ * In any case, we obey the current pixel unpacking parameters when fetching
+ * the stipple data.
+ *
+ * In the future, this routine should be used as a fallback, called via
+ * ctx->Driver.PolygonStipple().  We'll have to update all the DRI drivers
+ * too.
+ */
+void
+_mesa_polygon_stipple(struct gl_context *ctx, const GLubyte *pattern)
+{
+   pattern = _mesa_map_validate_pbo_source(ctx, 2,
+                                           &ctx->Unpack, 32, 32, 1,
+                                           GL_COLOR_INDEX, GL_BITMAP, pattern,
+                                           "glPolygonStipple");
+   if (!pattern)
+      return;
+
+   _mesa_unpack_polygon_stipple(pattern, ctx->PolygonStipple, &ctx->Unpack);
+
+   _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
+}
+
+
+/**
+ * Called by glPolygonStipple.
+ */
+void GLAPIENTRY
+_mesa_PolygonStipple( const GLubyte *pattern )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      _mesa_debug(ctx, "glPolygonStipple\n");
+
+   FLUSH_VERTICES(ctx, _NEW_POLYGONSTIPPLE);
+
+   _mesa_polygon_stipple(ctx, pattern);
+
+   if (ctx->Driver.PolygonStipple)
+      ctx->Driver.PolygonStipple(ctx, pattern);
+}
+
+
+/**
+ * Called by glPolygonStipple.
+ */
+void GLAPIENTRY
+_mesa_GetPolygonStipple( GLubyte *dest )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      _mesa_debug(ctx, "glGetPolygonStipple\n");
+
+   dest = _mesa_map_validate_pbo_dest(ctx, 2,
+                                      &ctx->Pack, 32, 32, 1,
+                                      GL_COLOR_INDEX, GL_BITMAP, dest,
+                                      "glGetPolygonStipple");
+   if (!dest)
+      return;
+
+   _mesa_pack_polygon_stipple(ctx->PolygonStipple, dest, &ctx->Pack);
+
+   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
+}
+
+
+void GLAPIENTRY
+_mesa_PolygonOffset( GLfloat factor, GLfloat units )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      _mesa_debug(ctx, "glPolygonOffset %f %f\n", factor, units);
+
+   if (ctx->Polygon.OffsetFactor == factor &&
+       ctx->Polygon.OffsetUnits == units)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_POLYGON);
+   ctx->Polygon.OffsetFactor = factor;
+   ctx->Polygon.OffsetUnits = units;
+
+   if (ctx->Driver.PolygonOffset)
+      ctx->Driver.PolygonOffset( ctx, factor, units );
+}
+
+
+void GLAPIENTRY
+_mesa_PolygonOffsetEXT( GLfloat factor, GLfloat bias )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   /* XXX mult by DepthMaxF here??? */
+   _mesa_PolygonOffset(factor, bias * ctx->DrawBuffer->_DepthMaxF );
+}
+
+#endif
+
+
+/**********************************************************************/
+/** \name Initialization */
+/*@{*/
+
+/**
+ * Initialize the context polygon state.
+ *
+ * \param ctx GL context.
+ *
+ * Initializes __struct gl_contextRec::Polygon and __struct gl_contextRec::PolygonStipple
+ * attribute groups.
+ */
+void _mesa_init_polygon( struct gl_context * ctx )
+{
+   /* Polygon group */
+   ctx->Polygon.CullFlag = GL_FALSE;
+   ctx->Polygon.CullFaceMode = GL_BACK;
+   ctx->Polygon.FrontFace = GL_CCW;
+   ctx->Polygon._FrontBit = 0;
+   ctx->Polygon.FrontMode = GL_FILL;
+   ctx->Polygon.BackMode = GL_FILL;
+   ctx->Polygon.SmoothFlag = GL_FALSE;
+   ctx->Polygon.StippleFlag = GL_FALSE;
+   ctx->Polygon.OffsetFactor = 0.0F;
+   ctx->Polygon.OffsetUnits = 0.0F;
+   ctx->Polygon.OffsetPoint = GL_FALSE;
+   ctx->Polygon.OffsetLine = GL_FALSE;
+   ctx->Polygon.OffsetFill = GL_FALSE;
+
+
+   /* Polygon Stipple group */
+   memset( ctx->PolygonStipple, 0xff, 32*sizeof(GLuint) );
+}
+
+/*@}*/
diff --git a/mesalib/src/mesa/main/readpix.c b/mesalib/src/mesa/main/readpix.c
index 3f424600c..6e09a52c8 100644
--- a/mesalib/src/mesa/main/readpix.c
+++ b/mesalib/src/mesa/main/readpix.c
@@ -1,243 +1,244 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.1

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-#include "glheader.h"

-#include "imports.h"

-#include "bufferobj.h"

-#include "context.h"

-#include "enums.h"

-#include "readpix.h"

-#include "framebuffer.h"

-#include "formats.h"

-#include "image.h"

-#include "mtypes.h"

-#include "state.h"

-

-

-/**

- * Do error checking of the format/type parameters to glReadPixels and

- * glDrawPixels.

- * \param drawing if GL_TRUE do checking for DrawPixels, else do checking

- *                for ReadPixels.

- * \return GL_TRUE if error detected, GL_FALSE if no errors

- */

-GLboolean

-_mesa_error_check_format_type(struct gl_context *ctx, GLenum format, GLenum type,

-                              GLboolean drawing)

-{

-   const char *readDraw = drawing ? "Draw" : "Read";

-   const GLboolean reading = !drawing;

-

-   /* state validation should have already been done */

-   ASSERT(ctx->NewState == 0x0);

-

-   if (ctx->Extensions.EXT_packed_depth_stencil

-       && type == GL_UNSIGNED_INT_24_8_EXT

-       && format != GL_DEPTH_STENCIL_EXT) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "gl%sPixels(format is not GL_DEPTH_STENCIL_EXT)", readDraw);

-      return GL_TRUE;

-   }

-

-   /* basic combinations test */

-   if (!_mesa_is_legal_format_and_type(ctx, format, type)) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "gl%sPixels(format or type)", readDraw);

-      return GL_TRUE;

-   }

-

-   /* additional checks */

-   switch (format) {

-   case GL_RG:

-   case GL_RED:

-   case GL_GREEN:

-   case GL_BLUE:

-   case GL_ALPHA:

-   case GL_LUMINANCE:

-   case GL_LUMINANCE_ALPHA:

-   case GL_RGB:

-   case GL_BGR:

-   case GL_RGBA:

-   case GL_BGRA:

-   case GL_ABGR_EXT:

-   case GL_RED_INTEGER_EXT:

-   case GL_GREEN_INTEGER_EXT:

-   case GL_BLUE_INTEGER_EXT:

-   case GL_ALPHA_INTEGER_EXT:

-   case GL_RGB_INTEGER_EXT:

-   case GL_RGBA_INTEGER_EXT:

-   case GL_BGR_INTEGER_EXT:

-   case GL_BGRA_INTEGER_EXT:

-   case GL_LUMINANCE_INTEGER_EXT:

-   case GL_LUMINANCE_ALPHA_INTEGER_EXT:

-      if (!drawing) {

-         /* reading */

-         if (!_mesa_source_buffer_exists(ctx, GL_COLOR)) {

-            _mesa_error(ctx, GL_INVALID_OPERATION,

-                        "glReadPixels(no color buffer)");

-            return GL_TRUE;

-         }

-      }

-      break;

-   case GL_COLOR_INDEX:

-      if (drawing) {

-         if (ctx->PixelMaps.ItoR.Size == 0 ||

-	     ctx->PixelMaps.ItoG.Size == 0 ||

-	     ctx->PixelMaps.ItoB.Size == 0) {

-            _mesa_error(ctx, GL_INVALID_OPERATION,

-                   "glDrawPixels(drawing color index pixels into RGB buffer)");

-            return GL_TRUE;

-         }

-      }

-      else {

-         /* reading */

-         if (!_mesa_source_buffer_exists(ctx, GL_COLOR)) {

-            _mesa_error(ctx, GL_INVALID_OPERATION,

-                        "glReadPixels(no color buffer)");

-            return GL_TRUE;

-         }

-         /* We no longer support CI-mode color buffers so trying to read

-          * GL_COLOR_INDEX pixels is always an error.

-          */

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glReadPixels(color buffer is RGB)");

-         return GL_TRUE;

-      }

-      break;

-   case GL_STENCIL_INDEX:

-      if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||

-          (reading && !_mesa_source_buffer_exists(ctx, format))) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "gl%sPixels(no stencil buffer)", readDraw);

-         return GL_TRUE;

-      }

-      break;

-   case GL_DEPTH_COMPONENT:

-      if ((drawing && !_mesa_dest_buffer_exists(ctx, format))) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "gl%sPixels(no depth buffer)", readDraw);

-         return GL_TRUE;

-      }

-      break;

-   case GL_DEPTH_STENCIL_EXT:

-      if (!ctx->Extensions.EXT_packed_depth_stencil ||

-          type != GL_UNSIGNED_INT_24_8_EXT) {

-         _mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw);

-         return GL_TRUE;

-      }

-      if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||

-          (reading && !_mesa_source_buffer_exists(ctx, format))) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "gl%sPixels(no depth or stencil buffer)", readDraw);

-         return GL_TRUE;

-      }

-      break;

-   default:

-      /* this should have been caught in _mesa_is_legal_format_type() */

-      _mesa_problem(ctx, "unexpected format in _mesa_%sPixels", readDraw);

-      return GL_TRUE;

-   }

-

-   /* no errors */

-   return GL_FALSE;

-}

-      

-

-

-void GLAPIENTRY

-_mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,

-		  GLenum format, GLenum type, GLvoid *pixels )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   FLUSH_CURRENT(ctx, 0);

-

-   if (MESA_VERBOSE & VERBOSE_API)

-      _mesa_debug(ctx, "glReadPixels(%d, %d, %s, %s, %p)\n",

-                  width, height,

-                  _mesa_lookup_enum_by_nr(format),

-                  _mesa_lookup_enum_by_nr(type),

-                  pixels);

-

-   if (width < 0 || height < 0) {

-      _mesa_error( ctx, GL_INVALID_VALUE,

-                   "glReadPixels(width=%d height=%d)", width, height );

-      return;

-   }

-

-   if (ctx->NewState)

-      _mesa_update_state(ctx);

-

-   if (_mesa_error_check_format_type(ctx, format, type, GL_FALSE)) {

-      /* found an error */

-      return;

-   }

-

-   /* Check that the destination format and source buffer are both

-    * integer-valued or both non-integer-valued.

-    */

-   if (ctx->Extensions.EXT_texture_integer && _mesa_is_color_format(format)) {

-      const struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;

-      const GLboolean srcInteger = _mesa_is_format_integer_color(rb->Format);

-      const GLboolean dstInteger = _mesa_is_integer_format(format);

-      if (dstInteger != srcInteger) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glReadPixels(integer / non-integer format mismatch");

-         return;

-      }

-   }

-

-   if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,

-                  "glReadPixels(incomplete framebuffer)" );

-      return;

-   }

-

-   if (!_mesa_source_buffer_exists(ctx, format)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(no readbuffer)");

-      return;

-   }

-

-   if (width == 0 || height == 0)

-      return; /* nothing to do */

-

-   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {

-      if (!_mesa_validate_pbo_access(2, &ctx->Pack, width, height, 1,

-                                     format, type, pixels)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glReadPixels(invalid PBO access)");

-         return;

-      }

-

-      if (_mesa_bufferobj_mapped(ctx->Pack.BufferObj)) {

-         /* buffer is mapped - that's an error */

-         _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(PBO is mapped)");

-         return;

-      }

-   }

-

-   ctx->Driver.ReadPixels(ctx, x, y, width, height,

-			  format, type, &ctx->Pack, pixels);

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "glheader.h"
+#include "imports.h"
+#include "bufferobj.h"
+#include "context.h"
+#include "enums.h"
+#include "readpix.h"
+#include "framebuffer.h"
+#include "formats.h"
+#include "image.h"
+#include "mtypes.h"
+#include "pbo.h"
+#include "state.h"
+
+
+/**
+ * Do error checking of the format/type parameters to glReadPixels and
+ * glDrawPixels.
+ * \param drawing if GL_TRUE do checking for DrawPixels, else do checking
+ *                for ReadPixels.
+ * \return GL_TRUE if error detected, GL_FALSE if no errors
+ */
+GLboolean
+_mesa_error_check_format_type(struct gl_context *ctx, GLenum format, GLenum type,
+                              GLboolean drawing)
+{
+   const char *readDraw = drawing ? "Draw" : "Read";
+   const GLboolean reading = !drawing;
+
+   /* state validation should have already been done */
+   ASSERT(ctx->NewState == 0x0);
+
+   if (ctx->Extensions.EXT_packed_depth_stencil
+       && type == GL_UNSIGNED_INT_24_8_EXT
+       && format != GL_DEPTH_STENCIL_EXT) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "gl%sPixels(format is not GL_DEPTH_STENCIL_EXT)", readDraw);
+      return GL_TRUE;
+   }
+
+   /* basic combinations test */
+   if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "gl%sPixels(format or type)", readDraw);
+      return GL_TRUE;
+   }
+
+   /* additional checks */
+   switch (format) {
+   case GL_RG:
+   case GL_RED:
+   case GL_GREEN:
+   case GL_BLUE:
+   case GL_ALPHA:
+   case GL_LUMINANCE:
+   case GL_LUMINANCE_ALPHA:
+   case GL_RGB:
+   case GL_BGR:
+   case GL_RGBA:
+   case GL_BGRA:
+   case GL_ABGR_EXT:
+   case GL_RED_INTEGER_EXT:
+   case GL_GREEN_INTEGER_EXT:
+   case GL_BLUE_INTEGER_EXT:
+   case GL_ALPHA_INTEGER_EXT:
+   case GL_RGB_INTEGER_EXT:
+   case GL_RGBA_INTEGER_EXT:
+   case GL_BGR_INTEGER_EXT:
+   case GL_BGRA_INTEGER_EXT:
+   case GL_LUMINANCE_INTEGER_EXT:
+   case GL_LUMINANCE_ALPHA_INTEGER_EXT:
+      if (!drawing) {
+         /* reading */
+         if (!_mesa_source_buffer_exists(ctx, GL_COLOR)) {
+            _mesa_error(ctx, GL_INVALID_OPERATION,
+                        "glReadPixels(no color buffer)");
+            return GL_TRUE;
+         }
+      }
+      break;
+   case GL_COLOR_INDEX:
+      if (drawing) {
+         if (ctx->PixelMaps.ItoR.Size == 0 ||
+	     ctx->PixelMaps.ItoG.Size == 0 ||
+	     ctx->PixelMaps.ItoB.Size == 0) {
+            _mesa_error(ctx, GL_INVALID_OPERATION,
+                   "glDrawPixels(drawing color index pixels into RGB buffer)");
+            return GL_TRUE;
+         }
+      }
+      else {
+         /* reading */
+         if (!_mesa_source_buffer_exists(ctx, GL_COLOR)) {
+            _mesa_error(ctx, GL_INVALID_OPERATION,
+                        "glReadPixels(no color buffer)");
+            return GL_TRUE;
+         }
+         /* We no longer support CI-mode color buffers so trying to read
+          * GL_COLOR_INDEX pixels is always an error.
+          */
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glReadPixels(color buffer is RGB)");
+         return GL_TRUE;
+      }
+      break;
+   case GL_STENCIL_INDEX:
+      if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||
+          (reading && !_mesa_source_buffer_exists(ctx, format))) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "gl%sPixels(no stencil buffer)", readDraw);
+         return GL_TRUE;
+      }
+      break;
+   case GL_DEPTH_COMPONENT:
+      if ((drawing && !_mesa_dest_buffer_exists(ctx, format))) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "gl%sPixels(no depth buffer)", readDraw);
+         return GL_TRUE;
+      }
+      break;
+   case GL_DEPTH_STENCIL_EXT:
+      if (!ctx->Extensions.EXT_packed_depth_stencil ||
+          type != GL_UNSIGNED_INT_24_8_EXT) {
+         _mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw);
+         return GL_TRUE;
+      }
+      if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||
+          (reading && !_mesa_source_buffer_exists(ctx, format))) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "gl%sPixels(no depth or stencil buffer)", readDraw);
+         return GL_TRUE;
+      }
+      break;
+   default:
+      /* this should have been caught in _mesa_is_legal_format_type() */
+      _mesa_problem(ctx, "unexpected format in _mesa_%sPixels", readDraw);
+      return GL_TRUE;
+   }
+
+   /* no errors */
+   return GL_FALSE;
+}
+      
+
+
+void GLAPIENTRY
+_mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,
+		  GLenum format, GLenum type, GLvoid *pixels )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   FLUSH_CURRENT(ctx, 0);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glReadPixels(%d, %d, %s, %s, %p)\n",
+                  width, height,
+                  _mesa_lookup_enum_by_nr(format),
+                  _mesa_lookup_enum_by_nr(type),
+                  pixels);
+
+   if (width < 0 || height < 0) {
+      _mesa_error( ctx, GL_INVALID_VALUE,
+                   "glReadPixels(width=%d height=%d)", width, height );
+      return;
+   }
+
+   if (ctx->NewState)
+      _mesa_update_state(ctx);
+
+   if (_mesa_error_check_format_type(ctx, format, type, GL_FALSE)) {
+      /* found an error */
+      return;
+   }
+
+   /* Check that the destination format and source buffer are both
+    * integer-valued or both non-integer-valued.
+    */
+   if (ctx->Extensions.EXT_texture_integer && _mesa_is_color_format(format)) {
+      const struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
+      const GLboolean srcInteger = _mesa_is_format_integer_color(rb->Format);
+      const GLboolean dstInteger = _mesa_is_integer_format(format);
+      if (dstInteger != srcInteger) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glReadPixels(integer / non-integer format mismatch");
+         return;
+      }
+   }
+
+   if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+                  "glReadPixels(incomplete framebuffer)" );
+      return;
+   }
+
+   if (!_mesa_source_buffer_exists(ctx, format)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(no readbuffer)");
+      return;
+   }
+
+   if (width == 0 || height == 0)
+      return; /* nothing to do */
+
+   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
+      if (!_mesa_validate_pbo_access(2, &ctx->Pack, width, height, 1,
+                                     format, type, pixels)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glReadPixels(invalid PBO access)");
+         return;
+      }
+
+      if (_mesa_bufferobj_mapped(ctx->Pack.BufferObj)) {
+         /* buffer is mapped - that's an error */
+         _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(PBO is mapped)");
+         return;
+      }
+   }
+
+   ctx->Driver.ReadPixels(ctx, x, y, width, height,
+			  format, type, &ctx->Pack, pixels);
+}
diff --git a/mesalib/src/mesa/main/texcompress_rgtc.c b/mesalib/src/mesa/main/texcompress_rgtc.c
index b7725f4a9..2f3a0f214 100644
--- a/mesalib/src/mesa/main/texcompress_rgtc.c
+++ b/mesalib/src/mesa/main/texcompress_rgtc.c
@@ -46,9 +46,9 @@
 
 #define RGTC_DEBUG 0
 
-static void encode_rgtc_chan_u(GLubyte *blkaddr, GLubyte srccolors[4][4],
-			     GLint numxpixels, GLint numypixels);
-static void encode_rgtc_chan_s(GLbyte *blkaddr, GLbyte srccolors[4][4],
+static void unsigned_encode_rgtc_chan(GLubyte *blkaddr, GLubyte srccolors[4][4],
+					GLint numxpixels, GLint numypixels);
+static void signed_encode_rgtc_chan(GLbyte *blkaddr, GLbyte srccolors[4][4],
 			     GLint numxpixels, GLint numypixels);
 
 static void extractsrc_u( GLubyte srcpixels[4][4], const GLchan *srcaddr,
@@ -88,7 +88,7 @@ _mesa_texstore_red_rgtc1(TEXSTORE_PARAMS)
    const GLchan *tempImage = NULL;
    int i, j;
    int numxpixels, numypixels;
-   const void *srcaddr;
+   const GLchan *srcaddr;
    GLubyte srcpixels[4][4];
    GLubyte *blkaddr;
    GLint dstRowDiff;
@@ -123,7 +123,7 @@ _mesa_texstore_red_rgtc1(TEXSTORE_PARAMS)
 	 if (srcWidth > i + 3) numxpixels = 4;
 	 else numxpixels = srcWidth - i;
 	 extractsrc_u(srcpixels, srcaddr, srcWidth, numxpixels, numypixels, 1);
-	 encode_rgtc_chan_u(blkaddr, srcpixels, numxpixels, numypixels);
+	 unsigned_encode_rgtc_chan(blkaddr, srcpixels, numxpixels, numypixels);
 	 srcaddr += numxpixels;
 	 blkaddr += 8;
       }
@@ -177,7 +177,7 @@ _mesa_texstore_signed_red_rgtc1(TEXSTORE_PARAMS)
 	 if (srcWidth > i + 3) numxpixels = 4;
 	 else numxpixels = srcWidth - i;
 	 extractsrc_s(srcpixels, srcaddr, srcWidth, numxpixels, numypixels, 1);
-	 encode_rgtc_chan_s(blkaddr, srcpixels, numxpixels, numypixels);
+	 signed_encode_rgtc_chan(blkaddr, srcpixels, numxpixels, numypixels);
 	 srcaddr += numxpixels;
 	 blkaddr += 8;
       }
@@ -197,7 +197,7 @@ _mesa_texstore_rg_rgtc2(TEXSTORE_PARAMS)
    const GLchan *tempImage = NULL;
    int i, j;
    int numxpixels, numypixels;
-   const void *srcaddr;
+   const GLchan *srcaddr;
    GLubyte srcpixels[4][4];
    GLubyte *blkaddr;
    GLint dstRowDiff;
@@ -232,11 +232,11 @@ _mesa_texstore_rg_rgtc2(TEXSTORE_PARAMS)
 	 if (srcWidth > i + 3) numxpixels = 4;
 	 else numxpixels = srcWidth - i;
 	 extractsrc_u(srcpixels, srcaddr, srcWidth, numxpixels, numypixels, 2);
-	 encode_rgtc_chan_u(blkaddr, srcpixels, numxpixels, numypixels);
+	 unsigned_encode_rgtc_chan(blkaddr, srcpixels, numxpixels, numypixels);
 
 	 blkaddr += 8;
 	 extractsrc_u(srcpixels, (GLchan *)srcaddr + 1, srcWidth, numxpixels, numypixels, 2);
-	 encode_rgtc_chan_u(blkaddr, srcpixels, numxpixels, numypixels);
+	 unsigned_encode_rgtc_chan(blkaddr, srcpixels, numxpixels, numypixels);
 
 	 blkaddr += 8;
 
@@ -294,11 +294,11 @@ _mesa_texstore_signed_rg_rgtc2(TEXSTORE_PARAMS)
 	 else numxpixels = srcWidth - i;
 
 	 extractsrc_s(srcpixels, srcaddr, srcWidth, numxpixels, numypixels, 2);
-	 encode_rgtc_chan_s(blkaddr, srcpixels, numxpixels, numypixels);
+	 signed_encode_rgtc_chan(blkaddr, srcpixels, numxpixels, numypixels);
 	 blkaddr += 8;
 
 	 extractsrc_s(srcpixels, srcaddr + 1, srcWidth, numxpixels, numypixels, 2);
-	 encode_rgtc_chan_s(blkaddr, srcpixels, numxpixels, numypixels);
+	 signed_encode_rgtc_chan(blkaddr, srcpixels, numxpixels, numypixels);
 	 blkaddr += 8;
 
 	 srcaddr += numxpixels * 2;
@@ -427,696 +427,27 @@ _mesa_fetch_texel_2d_f_signed_rg_rgtc2(const struct gl_texture_image *texImage,
    texel[ACOMP] = 1.0;
 }
 
-static void write_rgtc_encoded_channel(GLubyte *blkaddr,
-				       GLubyte alphabase1,
-				       GLubyte alphabase2,
-				       GLubyte alphaenc[16])
-{
-   *blkaddr++ = alphabase1;
-   *blkaddr++ = alphabase2;
-   *blkaddr++ = alphaenc[0] | (alphaenc[1] << 3) | ((alphaenc[2] & 3) << 6);
-   *blkaddr++ = (alphaenc[2] >> 2) | (alphaenc[3] << 1) | (alphaenc[4] << 4) | ((alphaenc[5] & 1) << 7);
-   *blkaddr++ = (alphaenc[5] >> 1) | (alphaenc[6] << 2) | (alphaenc[7] << 5);
-   *blkaddr++ = alphaenc[8] | (alphaenc[9] << 3) | ((alphaenc[10] & 3) << 6);
-   *blkaddr++ = (alphaenc[10] >> 2) | (alphaenc[11] << 1) | (alphaenc[12] << 4) | ((alphaenc[13] & 1) << 7);
-   *blkaddr++ = (alphaenc[13] >> 1) | (alphaenc[14] << 2) | (alphaenc[15] << 5);
-}
-
-static void encode_rgtc_chan_u(GLubyte *blkaddr, GLubyte srccolors[4][4],
-			     GLint numxpixels, GLint numypixels)
-{
-   GLubyte alphabase[2], alphause[2];
-   GLshort alphatest[2] = { 0 };
-   GLuint alphablockerror1, alphablockerror2, alphablockerror3;
-   GLubyte i, j, aindex, acutValues[7];
-   GLubyte alphaenc1[16], alphaenc2[16], alphaenc3[16];
-   GLboolean alphaabsmin = GL_FALSE;
-   GLboolean alphaabsmax = GL_FALSE;
-   GLshort alphadist;
-
-   /* find lowest and highest alpha value in block, alphabase[0] lowest, alphabase[1] highest */
-   alphabase[0] = 0xff; alphabase[1] = 0x0;
-   for (j = 0; j < numypixels; j++) {
-      for (i = 0; i < numxpixels; i++) {
-         if (srccolors[j][i] == 0)
-            alphaabsmin = GL_TRUE;
-         else if (srccolors[j][i] == 255)
-            alphaabsmax = GL_TRUE;
-         else {
-            if (srccolors[j][i] > alphabase[1])
-               alphabase[1] = srccolors[j][i];
-            if (srccolors[j][i] < alphabase[0])
-               alphabase[0] = srccolors[j][i];
-         }
-      }
-   }
-
-
-   if ((alphabase[0] > alphabase[1]) && !(alphaabsmin && alphaabsmax)) { /* one color, either max or min */
-      /* shortcut here since it is a very common case (and also avoids later problems) */
-      /* || (alphabase[0] == alphabase[1] && !alphaabsmin && !alphaabsmax) */
-      /* could also thest for alpha0 == alpha1 (and not min/max), but probably not common, so don't bother */
-
-      *blkaddr++ = srccolors[0][0];
-      blkaddr++;
-      *blkaddr++ = 0;
-      *blkaddr++ = 0;
-      *blkaddr++ = 0;
-      *blkaddr++ = 0;
-      *blkaddr++ = 0;
-      *blkaddr++ = 0;
-#if RGTC_DEBUG
-      fprintf(stderr, "enc0 used\n");
-#endif
-      return;
-   }
-
-   /* find best encoding for alpha0 > alpha1 */
-   /* it's possible this encoding is better even if both alphaabsmin and alphaabsmax are true */
-   alphablockerror1 = 0x0;
-   alphablockerror2 = 0xffffffff;
-   alphablockerror3 = 0xffffffff;
-   if (alphaabsmin) alphause[0] = 0;
-   else alphause[0] = alphabase[0];
-   if (alphaabsmax) alphause[1] = 255;
-   else alphause[1] = alphabase[1];
-   /* calculate the 7 cut values, just the middle between 2 of the computed alpha values */
-   for (aindex = 0; aindex < 7; aindex++) {
-      /* don't forget here is always rounded down */
-      acutValues[aindex] = (alphause[0] * (2*aindex + 1) + alphause[1] * (14 - (2*aindex + 1))) / 14;
-   }
-
-   for (j = 0; j < numypixels; j++) {
-      for (i = 0; i < numxpixels; i++) {
-         /* maybe it's overkill to have the most complicated calculation just for the error
-            calculation which we only need to figure out if encoding1 or encoding2 is better... */
-         if (srccolors[j][i] > acutValues[0]) {
-            alphaenc1[4*j + i] = 0;
-            alphadist = srccolors[j][i] - alphause[1];
-         }
-         else if (srccolors[j][i] > acutValues[1]) {
-            alphaenc1[4*j + i] = 2;
-            alphadist = srccolors[j][i] - (alphause[1] * 6 + alphause[0] * 1) / 7;
-         }
-         else if (srccolors[j][i] > acutValues[2]) {
-            alphaenc1[4*j + i] = 3;
-            alphadist = srccolors[j][i] - (alphause[1] * 5 + alphause[0] * 2) / 7;
-         }
-         else if (srccolors[j][i] > acutValues[3]) {
-            alphaenc1[4*j + i] = 4;
-            alphadist = srccolors[j][i] - (alphause[1] * 4 + alphause[0] * 3) / 7;
-         }
-         else if (srccolors[j][i] > acutValues[4]) {
-            alphaenc1[4*j + i] = 5;
-            alphadist = srccolors[j][i] - (alphause[1] * 3 + alphause[0] * 4) / 7;
-         }
-         else if (srccolors[j][i] > acutValues[5]) {
-            alphaenc1[4*j + i] = 6;
-            alphadist = srccolors[j][i] - (alphause[1] * 2 + alphause[0] * 5) / 7;
-         }
-         else if (srccolors[j][i] > acutValues[6]) {
-            alphaenc1[4*j + i] = 7;
-            alphadist = srccolors[j][i] - (alphause[1] * 1 + alphause[0] * 6) / 7;
-         }
-         else {
-            alphaenc1[4*j + i] = 1;
-            alphadist = srccolors[j][i] - alphause[0];
-         }
-         alphablockerror1 += alphadist * alphadist;
-      }
-   }
-
-#if RGTC_DEBUG
-   for (i = 0; i < 16; i++) {
-      fprintf(stderr, "%d ", alphaenc1[i]);
-   }
-   fprintf(stderr, "cutVals ");
-   for (i = 0; i < 8; i++) {
-      fprintf(stderr, "%d ", acutValues[i]);
-   }
-   fprintf(stderr, "srcVals ");
-   for (j = 0; j < numypixels; j++) {
-      for (i = 0; i < numxpixels; i++) {
-	 fprintf(stderr, "%d ", srccolors[j][i]);
-      }
-   }
-   fprintf(stderr, "\n");
-#endif
-
-   /* it's not very likely this encoding is better if both alphaabsmin and alphaabsmax
-      are false but try it anyway */
-   if (alphablockerror1 >= 32) {
-
-      /* don't bother if encoding is already very good, this condition should also imply
-      we have valid alphabase colors which we absolutely need (alphabase[0] <= alphabase[1]) */
-      alphablockerror2 = 0;
-      for (aindex = 0; aindex < 5; aindex++) {
-         /* don't forget here is always rounded down */
-         acutValues[aindex] = (alphabase[0] * (10 - (2*aindex + 1)) + alphabase[1] * (2*aindex + 1)) / 10;
-      }
-      for (j = 0; j < numypixels; j++) {
-         for (i = 0; i < numxpixels; i++) {
-             /* maybe it's overkill to have the most complicated calculation just for the error
-               calculation which we only need to figure out if encoding1 or encoding2 is better... */
-            if (srccolors[j][i] == 0) {
-               alphaenc2[4*j + i] = 6;
-               alphadist = 0;
-            }
-            else if (srccolors[j][i] == 255) {
-               alphaenc2[4*j + i] = 7;
-               alphadist = 0;
-            }
-            else if (srccolors[j][i] <= acutValues[0]) {
-               alphaenc2[4*j + i] = 0;
-               alphadist = srccolors[j][i] - alphabase[0];
-            }
-            else if (srccolors[j][i] <= acutValues[1]) {
-               alphaenc2[4*j + i] = 2;
-               alphadist = srccolors[j][i] - (alphabase[0] * 4 + alphabase[1] * 1) / 5;
-            }
-            else if (srccolors[j][i] <= acutValues[2]) {
-               alphaenc2[4*j + i] = 3;
-               alphadist = srccolors[j][i] - (alphabase[0] * 3 + alphabase[1] * 2) / 5;
-            }
-            else if (srccolors[j][i] <= acutValues[3]) {
-               alphaenc2[4*j + i] = 4;
-               alphadist = srccolors[j][i] - (alphabase[0] * 2 + alphabase[1] * 3) / 5;
-            }
-            else if (srccolors[j][i] <= acutValues[4]) {
-               alphaenc2[4*j + i] = 5;
-               alphadist = srccolors[j][i] - (alphabase[0] * 1 + alphabase[1] * 4) / 5;
-            }
-            else {
-               alphaenc2[4*j + i] = 1;
-               alphadist = srccolors[j][i] - alphabase[1];
-            }
-            alphablockerror2 += alphadist * alphadist;
-         }
-      }
-
-
-      /* skip this if the error is already very small
-         this encoding is MUCH better on average than #2 though, but expensive! */
-      if ((alphablockerror2 > 96) && (alphablockerror1 > 96)) {
-         GLshort blockerrlin1 = 0;
-         GLshort blockerrlin2 = 0;
-         GLubyte nralphainrangelow = 0;
-         GLubyte nralphainrangehigh = 0;
-         alphatest[0] = 0xff;
-         alphatest[1] = 0x0;
-         /* if we have large range it's likely there are values close to 0/255, try to map them to 0/255 */
-         for (j = 0; j < numypixels; j++) {
-            for (i = 0; i < numxpixels; i++) {
-               if ((srccolors[j][i] > alphatest[1]) && (srccolors[j][i] < (255 -(alphabase[1] - alphabase[0]) / 28)))
-                  alphatest[1] = srccolors[j][i];
-               if ((srccolors[j][i] < alphatest[0]) && (srccolors[j][i] > (alphabase[1] - alphabase[0]) / 28))
-                  alphatest[0] = srccolors[j][i];
-            }
-         }
-          /* shouldn't happen too often, don't really care about those degenerated cases */
-          if (alphatest[1] <= alphatest[0]) {
-             alphatest[0] = 1;
-             alphatest[1] = 254;
-         }
-         for (aindex = 0; aindex < 5; aindex++) {
-         /* don't forget here is always rounded down */
-            acutValues[aindex] = (alphatest[0] * (10 - (2*aindex + 1)) + alphatest[1] * (2*aindex + 1)) / 10;
-         }
-
-         /* find the "average" difference between the alpha values and the next encoded value.
-            This is then used to calculate new base values.
-            Should there be some weighting, i.e. those values closer to alphatest[x] have more weight,
-            since they will see more improvement, and also because the values in the middle are somewhat
-            likely to get no improvement at all (because the base values might move in different directions)?
-            OTOH it would mean the values in the middle are even less likely to get an improvement
-         */
-         for (j = 0; j < numypixels; j++) {
-            for (i = 0; i < numxpixels; i++) {
-               if (srccolors[j][i] <= alphatest[0] / 2) {
-               }
-               else if (srccolors[j][i] > ((255 + alphatest[1]) / 2)) {
-               }
-               else if (srccolors[j][i] <= acutValues[0]) {
-                  blockerrlin1 += (srccolors[j][i] - alphatest[0]);
-                  nralphainrangelow += 1;
-               }
-               else if (srccolors[j][i] <= acutValues[1]) {
-                  blockerrlin1 += (srccolors[j][i] - (alphatest[0] * 4 + alphatest[1] * 1) / 5);
-                  blockerrlin2 += (srccolors[j][i] - (alphatest[0] * 4 + alphatest[1] * 1) / 5);
-                  nralphainrangelow += 1;
-                  nralphainrangehigh += 1;
-               }
-               else if (srccolors[j][i] <= acutValues[2]) {
-                  blockerrlin1 += (srccolors[j][i] - (alphatest[0] * 3 + alphatest[1] * 2) / 5);
-                  blockerrlin2 += (srccolors[j][i] - (alphatest[0] * 3 + alphatest[1] * 2) / 5);
-                  nralphainrangelow += 1;
-                  nralphainrangehigh += 1;
-               }
-               else if (srccolors[j][i] <= acutValues[3]) {
-                  blockerrlin1 += (srccolors[j][i] - (alphatest[0] * 2 + alphatest[1] * 3) / 5);
-                  blockerrlin2 += (srccolors[j][i] - (alphatest[0] * 2 + alphatest[1] * 3) / 5);
-                  nralphainrangelow += 1;
-                  nralphainrangehigh += 1;
-               }
-               else if (srccolors[j][i] <= acutValues[4]) {
-                  blockerrlin1 += (srccolors[j][i] - (alphatest[0] * 1 + alphatest[1] * 4) / 5);
-                  blockerrlin2 += (srccolors[j][i] - (alphatest[0] * 1 + alphatest[1] * 4) / 5);
-                  nralphainrangelow += 1;
-                  nralphainrangehigh += 1;
-                  }
-               else {
-                  blockerrlin2 += (srccolors[j][i] - alphatest[1]);
-                  nralphainrangehigh += 1;
-               }
-            }
-         }
-         /* shouldn't happen often, needed to avoid div by zero */
-         if (nralphainrangelow == 0) nralphainrangelow = 1;
-         if (nralphainrangehigh == 0) nralphainrangehigh = 1;
-         alphatest[0] = alphatest[0] + (blockerrlin1 / nralphainrangelow);
-#if RGTC_DEBUG
-         fprintf(stderr, "block err lin low %d, nr %d\n", blockerrlin1, nralphainrangelow);
-         fprintf(stderr, "block err lin high %d, nr %d\n", blockerrlin2, nralphainrangehigh);
-#endif
-         /* again shouldn't really happen often... */
-         if (alphatest[0] < 0) {
-            alphatest[0] = 0;
-         }
-         alphatest[1] = alphatest[1] + (blockerrlin2 / nralphainrangehigh);
-         if (alphatest[1] > 255) {
-            alphatest[1] = 255;
-         }
-
-         alphablockerror3 = 0;
-         for (aindex = 0; aindex < 5; aindex++) {
-         /* don't forget here is always rounded down */
-            acutValues[aindex] = (alphatest[0] * (10 - (2*aindex + 1)) + alphatest[1] * (2*aindex + 1)) / 10;
-         }
-         for (j = 0; j < numypixels; j++) {
-            for (i = 0; i < numxpixels; i++) {
-                /* maybe it's overkill to have the most complicated calculation just for the error
-                  calculation which we only need to figure out if encoding1 or encoding2 is better... */
-               if (srccolors[j][i] <= alphatest[0] / 2) {
-                  alphaenc3[4*j + i] = 6;
-                  alphadist = srccolors[j][i];
-               }
-               else if (srccolors[j][i] > ((255 + alphatest[1]) / 2)) {
-                  alphaenc3[4*j + i] = 7;
-                  alphadist = 255 - srccolors[j][i];
-               }
-               else if (srccolors[j][i] <= acutValues[0]) {
-                  alphaenc3[4*j + i] = 0;
-                  alphadist = srccolors[j][i] - alphatest[0];
-               }
-               else if (srccolors[j][i] <= acutValues[1]) {
-                 alphaenc3[4*j + i] = 2;
-                 alphadist = srccolors[j][i] - (alphatest[0] * 4 + alphatest[1] * 1) / 5;
-               }
-               else if (srccolors[j][i] <= acutValues[2]) {
-                  alphaenc3[4*j + i] = 3;
-                  alphadist = srccolors[j][i] - (alphatest[0] * 3 + alphatest[1] * 2) / 5;
-               }
-               else if (srccolors[j][i] <= acutValues[3]) {
-                  alphaenc3[4*j + i] = 4;
-                  alphadist = srccolors[j][i] - (alphatest[0] * 2 + alphatest[1] * 3) / 5;
-               }
-               else if (srccolors[j][i] <= acutValues[4]) {
-                  alphaenc3[4*j + i] = 5;
-                  alphadist = srccolors[j][i] - (alphatest[0] * 1 + alphatest[1] * 4) / 5;
-               }
-               else {
-                  alphaenc3[4*j + i] = 1;
-                  alphadist = srccolors[j][i] - alphatest[1];
-               }
-               alphablockerror3 += alphadist * alphadist;
-            }
-         }
-      }
-   }
-  /* write the alpha values and encoding back. */
-   if ((alphablockerror1 <= alphablockerror2) && (alphablockerror1 <= alphablockerror3)) {
-#if RGTC_DEBUG
-      if (alphablockerror1 > 96) fprintf(stderr, "enc1 used, error %d\n", alphablockerror1);
-#endif
-      write_rgtc_encoded_channel( blkaddr, alphause[1], alphause[0], alphaenc1 );
-   }
-   else if (alphablockerror2 <= alphablockerror3) {
-#if RGTC_DEBUG
-      if (alphablockerror2 > 96) fprintf(stderr, "enc2 used, error %d\n", alphablockerror2);
-#endif
-      write_rgtc_encoded_channel( blkaddr, alphabase[0], alphabase[1], alphaenc2 );
-   }
-   else {
-#if RGTC_DEBUG
-      fprintf(stderr, "enc3 used, error %d\n", alphablockerror3);
-#endif
-      write_rgtc_encoded_channel( blkaddr, (GLubyte)alphatest[0], (GLubyte)alphatest[1], alphaenc3 );
-   }
-}
-
-
-static void write_rgtc_encoded_channel_s(GLbyte *blkaddr,
-					 GLbyte alphabase1,
-					 GLbyte alphabase2,
-					 GLbyte alphaenc[16])
-{
-   *blkaddr++ = alphabase1;
-   *blkaddr++ = alphabase2;
-   *blkaddr++ = alphaenc[0] | (alphaenc[1] << 3) | ((alphaenc[2] & 3) << 6);
-   *blkaddr++ = (alphaenc[2] >> 2) | (alphaenc[3] << 1) | (alphaenc[4] << 4) | ((alphaenc[5] & 1) << 7);
-   *blkaddr++ = (alphaenc[5] >> 1) | (alphaenc[6] << 2) | (alphaenc[7] << 5);
-   *blkaddr++ = alphaenc[8] | (alphaenc[9] << 3) | ((alphaenc[10] & 3) << 6);
-   *blkaddr++ = (alphaenc[10] >> 2) | (alphaenc[11] << 1) | (alphaenc[12] << 4) | ((alphaenc[13] & 1) << 7);
-   *blkaddr++ = (alphaenc[13] >> 1) | (alphaenc[14] << 2) | (alphaenc[15] << 5);
-}
-
-static void encode_rgtc_chan_s(GLbyte *blkaddr, GLbyte srccolors[4][4],
-			       GLint numxpixels, GLint numypixels)
-{
-   GLbyte alphabase[2], alphause[2];
-   GLshort alphatest[2] = { 0 };
-   GLuint alphablockerror1, alphablockerror2, alphablockerror3;
-   GLbyte i, j, aindex, acutValues[7];
-   GLbyte alphaenc1[16], alphaenc2[16], alphaenc3[16];
-   GLboolean alphaabsmin = GL_FALSE;
-   GLboolean alphaabsmax = GL_FALSE;
-   GLshort alphadist;
-
-   /* find lowest and highest alpha value in block, alphabase[0] lowest, alphabase[1] highest */
-   alphabase[0] = 0xff; alphabase[1] = 0x0;
-   for (j = 0; j < numypixels; j++) {
-      for (i = 0; i < numxpixels; i++) {
-         if (srccolors[j][i] == 0)
-            alphaabsmin = GL_TRUE;
-         else if (srccolors[j][i] == 255)
-            alphaabsmax = GL_TRUE;
-         else {
-            if (srccolors[j][i] > alphabase[1])
-               alphabase[1] = srccolors[j][i];
-            if (srccolors[j][i] < alphabase[0])
-               alphabase[0] = srccolors[j][i];
-         }
-      }
-   }
-
-
-   if ((alphabase[0] > alphabase[1]) && !(alphaabsmin && alphaabsmax)) { /* one color, either max or min */
-      /* shortcut here since it is a very common case (and also avoids later problems) */
-      /* || (alphabase[0] == alphabase[1] && !alphaabsmin && !alphaabsmax) */
-      /* could also thest for alpha0 == alpha1 (and not min/max), but probably not common, so don't bother */
-
-      *blkaddr++ = srccolors[0][0];
-      blkaddr++;
-      *blkaddr++ = 0;
-      *blkaddr++ = 0;
-      *blkaddr++ = 0;
-      *blkaddr++ = 0;
-      *blkaddr++ = 0;
-      *blkaddr++ = 0;
-#if RGTC_DEBUG
-      fprintf(stderr, "enc0 used\n");
-#endif
-      return;
-   }
-
-   /* find best encoding for alpha0 > alpha1 */
-   /* it's possible this encoding is better even if both alphaabsmin and alphaabsmax are true */
-   alphablockerror1 = 0x0;
-   alphablockerror2 = 0xffffffff;
-   alphablockerror3 = 0xffffffff;
-   if (alphaabsmin) alphause[0] = 0;
-   else alphause[0] = alphabase[0];
-   if (alphaabsmax) alphause[1] = 255;
-   else alphause[1] = alphabase[1];
-   /* calculate the 7 cut values, just the middle between 2 of the computed alpha values */
-   for (aindex = 0; aindex < 7; aindex++) {
-      /* don't forget here is always rounded down */
-      acutValues[aindex] = (alphause[0] * (2*aindex + 1) + alphause[1] * (14 - (2*aindex + 1))) / 14;
-   }
+#define TAG(x) unsigned_##x
 
-   for (j = 0; j < numypixels; j++) {
-      for (i = 0; i < numxpixels; i++) {
-         /* maybe it's overkill to have the most complicated calculation just for the error
-            calculation which we only need to figure out if encoding1 or encoding2 is better... */
-         if (srccolors[j][i] > acutValues[0]) {
-            alphaenc1[4*j + i] = 0;
-            alphadist = srccolors[j][i] - alphause[1];
-         }
-         else if (srccolors[j][i] > acutValues[1]) {
-            alphaenc1[4*j + i] = 2;
-            alphadist = srccolors[j][i] - (alphause[1] * 6 + alphause[0] * 1) / 7;
-         }
-         else if (srccolors[j][i] > acutValues[2]) {
-            alphaenc1[4*j + i] = 3;
-            alphadist = srccolors[j][i] - (alphause[1] * 5 + alphause[0] * 2) / 7;
-         }
-         else if (srccolors[j][i] > acutValues[3]) {
-            alphaenc1[4*j + i] = 4;
-            alphadist = srccolors[j][i] - (alphause[1] * 4 + alphause[0] * 3) / 7;
-         }
-         else if (srccolors[j][i] > acutValues[4]) {
-            alphaenc1[4*j + i] = 5;
-            alphadist = srccolors[j][i] - (alphause[1] * 3 + alphause[0] * 4) / 7;
-         }
-         else if (srccolors[j][i] > acutValues[5]) {
-            alphaenc1[4*j + i] = 6;
-            alphadist = srccolors[j][i] - (alphause[1] * 2 + alphause[0] * 5) / 7;
-         }
-         else if (srccolors[j][i] > acutValues[6]) {
-            alphaenc1[4*j + i] = 7;
-            alphadist = srccolors[j][i] - (alphause[1] * 1 + alphause[0] * 6) / 7;
-         }
-         else {
-            alphaenc1[4*j + i] = 1;
-            alphadist = srccolors[j][i] - alphause[0];
-         }
-         alphablockerror1 += alphadist * alphadist;
-      }
-   }
-#if RGTC_DEBUG
-   for (i = 0; i < 16; i++) {
-      fprintf(stderr, "%d ", alphaenc1[i]);
-   }
-   fprintf(stderr, "cutVals ");
-   for (i = 0; i < 8; i++) {
-      fprintf(stderr, "%d ", acutValues[i]);
-   }
-   fprintf(stderr, "srcVals ");
-   for (j = 0; j < numypixels; j++)
-      for (i = 0; i < numxpixels; i++) {
-	 fprintf(stderr, "%d ", srccolors[j][i]);
-      }
-   
-   fprintf(stderr, "\n");
-#endif
+#define TYPE GLubyte
+#define T_MIN 0
+#define T_MAX 0xff
 
-   /* it's not very likely this encoding is better if both alphaabsmin and alphaabsmax
-      are false but try it anyway */
-   if (alphablockerror1 >= 32) {
-
-      /* don't bother if encoding is already very good, this condition should also imply
-      we have valid alphabase colors which we absolutely need (alphabase[0] <= alphabase[1]) */
-      alphablockerror2 = 0;
-      for (aindex = 0; aindex < 5; aindex++) {
-         /* don't forget here is always rounded down */
-         acutValues[aindex] = (alphabase[0] * (10 - (2*aindex + 1)) + alphabase[1] * (2*aindex + 1)) / 10;
-      }
-      for (j = 0; j < numypixels; j++) {
-         for (i = 0; i < numxpixels; i++) {
-             /* maybe it's overkill to have the most complicated calculation just for the error
-               calculation which we only need to figure out if encoding1 or encoding2 is better... */
-            if (srccolors[j][i] == 0) {
-               alphaenc2[4*j + i] = 6;
-               alphadist = 0;
-            }
-            else if (srccolors[j][i] == 255) {
-               alphaenc2[4*j + i] = 7;
-               alphadist = 0;
-            }
-            else if (srccolors[j][i] <= acutValues[0]) {
-               alphaenc2[4*j + i] = 0;
-               alphadist = srccolors[j][i] - alphabase[0];
-            }
-            else if (srccolors[j][i] <= acutValues[1]) {
-               alphaenc2[4*j + i] = 2;
-               alphadist = srccolors[j][i] - (alphabase[0] * 4 + alphabase[1] * 1) / 5;
-            }
-            else if (srccolors[j][i] <= acutValues[2]) {
-               alphaenc2[4*j + i] = 3;
-               alphadist = srccolors[j][i] - (alphabase[0] * 3 + alphabase[1] * 2) / 5;
-            }
-            else if (srccolors[j][i] <= acutValues[3]) {
-               alphaenc2[4*j + i] = 4;
-               alphadist = srccolors[j][i] - (alphabase[0] * 2 + alphabase[1] * 3) / 5;
-            }
-            else if (srccolors[j][i] <= acutValues[4]) {
-               alphaenc2[4*j + i] = 5;
-               alphadist = srccolors[j][i] - (alphabase[0] * 1 + alphabase[1] * 4) / 5;
-            }
-            else {
-               alphaenc2[4*j + i] = 1;
-               alphadist = srccolors[j][i] - alphabase[1];
-            }
-            alphablockerror2 += alphadist * alphadist;
-         }
-      }
+#include "texcompress_rgtc_tmp.h"
 
+#undef TAG
+#undef TYPE
+#undef T_MIN
+#undef T_MAX
 
-      /* skip this if the error is already very small
-         this encoding is MUCH better on average than #2 though, but expensive! */
-      if ((alphablockerror2 > 96) && (alphablockerror1 > 96)) {
-         GLshort blockerrlin1 = 0;
-         GLshort blockerrlin2 = 0;
-         GLubyte nralphainrangelow = 0;
-         GLubyte nralphainrangehigh = 0;
-         alphatest[0] = 0xff;
-         alphatest[1] = 0x0;
-         /* if we have large range it's likely there are values close to 0/255, try to map them to 0/255 */
-         for (j = 0; j < numypixels; j++) {
-            for (i = 0; i < numxpixels; i++) {
-               if ((srccolors[j][i] > alphatest[1]) && (srccolors[j][i] < (255 -(alphabase[1] - alphabase[0]) / 28)))
-                  alphatest[1] = srccolors[j][i];
-               if ((srccolors[j][i] < alphatest[0]) && (srccolors[j][i] > (alphabase[1] - alphabase[0]) / 28))
-                  alphatest[0] = srccolors[j][i];
-            }
-         }
-          /* shouldn't happen too often, don't really care about those degenerated cases */
-          if (alphatest[1] <= alphatest[0]) {
-             alphatest[0] = 1;
-             alphatest[1] = 254;
-         }
-         for (aindex = 0; aindex < 5; aindex++) {
-         /* don't forget here is always rounded down */
-            acutValues[aindex] = (alphatest[0] * (10 - (2*aindex + 1)) + alphatest[1] * (2*aindex + 1)) / 10;
-         }
+#define TAG(x) signed_##x
+#define TYPE GLbyte
+#define T_MIN (GLbyte)-127
+#define T_MAX (GLbyte)127
 
-         /* find the "average" difference between the alpha values and the next encoded value.
-            This is then used to calculate new base values.
-            Should there be some weighting, i.e. those values closer to alphatest[x] have more weight,
-            since they will see more improvement, and also because the values in the middle are somewhat
-            likely to get no improvement at all (because the base values might move in different directions)?
-            OTOH it would mean the values in the middle are even less likely to get an improvement
-         */
-         for (j = 0; j < numypixels; j++) {
-            for (i = 0; i < numxpixels; i++) {
-               if (srccolors[j][i] <= alphatest[0] / 2) {
-               }
-               else if (srccolors[j][i] > ((255 + alphatest[1]) / 2)) {
-               }
-               else if (srccolors[j][i] <= acutValues[0]) {
-                  blockerrlin1 += (srccolors[j][i] - alphatest[0]);
-                  nralphainrangelow += 1;
-               }
-               else if (srccolors[j][i] <= acutValues[1]) {
-                  blockerrlin1 += (srccolors[j][i] - (alphatest[0] * 4 + alphatest[1] * 1) / 5);
-                  blockerrlin2 += (srccolors[j][i] - (alphatest[0] * 4 + alphatest[1] * 1) / 5);
-                  nralphainrangelow += 1;
-                  nralphainrangehigh += 1;
-               }
-               else if (srccolors[j][i] <= acutValues[2]) {
-                  blockerrlin1 += (srccolors[j][i] - (alphatest[0] * 3 + alphatest[1] * 2) / 5);
-                  blockerrlin2 += (srccolors[j][i] - (alphatest[0] * 3 + alphatest[1] * 2) / 5);
-                  nralphainrangelow += 1;
-                  nralphainrangehigh += 1;
-               }
-               else if (srccolors[j][i] <= acutValues[3]) {
-                  blockerrlin1 += (srccolors[j][i] - (alphatest[0] * 2 + alphatest[1] * 3) / 5);
-                  blockerrlin2 += (srccolors[j][i] - (alphatest[0] * 2 + alphatest[1] * 3) / 5);
-                  nralphainrangelow += 1;
-                  nralphainrangehigh += 1;
-               }
-               else if (srccolors[j][i] <= acutValues[4]) {
-                  blockerrlin1 += (srccolors[j][i] - (alphatest[0] * 1 + alphatest[1] * 4) / 5);
-                  blockerrlin2 += (srccolors[j][i] - (alphatest[0] * 1 + alphatest[1] * 4) / 5);
-                  nralphainrangelow += 1;
-                  nralphainrangehigh += 1;
-                  }
-               else {
-                  blockerrlin2 += (srccolors[j][i] - alphatest[1]);
-                  nralphainrangehigh += 1;
-               }
-            }
-         }
-         /* shouldn't happen often, needed to avoid div by zero */
-         if (nralphainrangelow == 0) nralphainrangelow = 1;
-         if (nralphainrangehigh == 0) nralphainrangehigh = 1;
-         alphatest[0] = alphatest[0] + (blockerrlin1 / nralphainrangelow);
-#if RGTC_DEBUG
-	 fprintf(stderr, "block err lin low %d, nr %d\n", blockerrlin1, nralphainrangelow);
-         fprintf(stderr, "block err lin high %d, nr %d\n", blockerrlin2, nralphainrangehigh);
-#endif
-         /* again shouldn't really happen often... */
-         if (alphatest[0] < 0) {
-            alphatest[0] = 0;
-         }
-         alphatest[1] = alphatest[1] + (blockerrlin2 / nralphainrangehigh);
-         if (alphatest[1] > 255) {
-            alphatest[1] = 255;
-         }
+#include "texcompress_rgtc_tmp.h"
 
-         alphablockerror3 = 0;
-         for (aindex = 0; aindex < 5; aindex++) {
-         /* don't forget here is always rounded down */
-            acutValues[aindex] = (alphatest[0] * (10 - (2*aindex + 1)) + alphatest[1] * (2*aindex + 1)) / 10;
-         }
-         for (j = 0; j < numypixels; j++) {
-            for (i = 0; i < numxpixels; i++) {
-                /* maybe it's overkill to have the most complicated calculation just for the error
-                  calculation which we only need to figure out if encoding1 or encoding2 is better... */
-               if (srccolors[j][i] <= alphatest[0] / 2) {
-                  alphaenc3[4*j + i] = 6;
-                  alphadist = srccolors[j][i];
-               }
-               else if (srccolors[j][i] > ((255 + alphatest[1]) / 2)) {
-                  alphaenc3[4*j + i] = 7;
-                  alphadist = 255 - srccolors[j][i];
-               }
-               else if (srccolors[j][i] <= acutValues[0]) {
-                  alphaenc3[4*j + i] = 0;
-                  alphadist = srccolors[j][i] - alphatest[0];
-               }
-               else if (srccolors[j][i] <= acutValues[1]) {
-                 alphaenc3[4*j + i] = 2;
-                 alphadist = srccolors[j][i] - (alphatest[0] * 4 + alphatest[1] * 1) / 5;
-               }
-               else if (srccolors[j][i] <= acutValues[2]) {
-                  alphaenc3[4*j + i] = 3;
-                  alphadist = srccolors[j][i] - (alphatest[0] * 3 + alphatest[1] * 2) / 5;
-               }
-               else if (srccolors[j][i] <= acutValues[3]) {
-                  alphaenc3[4*j + i] = 4;
-                  alphadist = srccolors[j][i] - (alphatest[0] * 2 + alphatest[1] * 3) / 5;
-               }
-               else if (srccolors[j][i] <= acutValues[4]) {
-                  alphaenc3[4*j + i] = 5;
-                  alphadist = srccolors[j][i] - (alphatest[0] * 1 + alphatest[1] * 4) / 5;
-               }
-               else {
-                  alphaenc3[4*j + i] = 1;
-                  alphadist = srccolors[j][i] - alphatest[1];
-               }
-               alphablockerror3 += alphadist * alphadist;
-            }
-         }
-      }
-   }
-  /* write the alpha values and encoding back. */
-   if ((alphablockerror1 <= alphablockerror2) && (alphablockerror1 <= alphablockerror3)) {
-#if RGTC_DEBUG
-      if (alphablockerror1 > 96) fprintf(stderr, "enc1 used, error %d\n", alphablockerror1);
-#endif
-      write_rgtc_encoded_channel_s( blkaddr, alphause[1], alphause[0], alphaenc1 );
-   }
-   else if (alphablockerror2 <= alphablockerror3) {
-#if RGTC_DEBUG
-      if (alphablockerror2 > 96) fprintf(stderr, "enc2 used, error %d\n", alphablockerror2);
-#endif
-      write_rgtc_encoded_channel_s( blkaddr, alphabase[0], alphabase[1], alphaenc2 );
-   }
-   else {
-#if RGTC_DEBUG
-      fprintf(stderr, "enc3 used, error %d\n", alphablockerror3);
-#endif
-      write_rgtc_encoded_channel_s( blkaddr, (GLubyte)alphatest[0], (GLubyte)alphatest[1], alphaenc3 );
-   }
-}
+#undef TAG
+#undef TYPE
+#undef T_MIN
+#undef T_MAX
diff --git a/mesalib/src/mesa/main/texcompress_rgtc_tmp.h b/mesalib/src/mesa/main/texcompress_rgtc_tmp.h
new file mode 100644
index 000000000..0f830a5d9
--- /dev/null
+++ b/mesalib/src/mesa/main/texcompress_rgtc_tmp.h
@@ -0,0 +1,376 @@
+/*
+ * Copyright (C) 2011 Red Hat Inc.
+ * 
+ * block compression parts are:
+ * Copyright (C) 2004  Roland Scheidegger   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Author:
+ *    Dave Airlie
+ */
+
+/* included by texcompress_rgtc to define byte/ubyte compressors */
+
+static void TAG(write_rgtc_encoded_channel)(TYPE *blkaddr,
+					    TYPE alphabase1,
+					    TYPE alphabase2,
+					    TYPE alphaenc[16])
+{
+   *blkaddr++ = alphabase1;
+   *blkaddr++ = alphabase2;
+   *blkaddr++ = alphaenc[0] | (alphaenc[1] << 3) | ((alphaenc[2] & 3) << 6);
+   *blkaddr++ = (alphaenc[2] >> 2) | (alphaenc[3] << 1) | (alphaenc[4] << 4) | ((alphaenc[5] & 1) << 7);
+   *blkaddr++ = (alphaenc[5] >> 1) | (alphaenc[6] << 2) | (alphaenc[7] << 5);
+   *blkaddr++ = alphaenc[8] | (alphaenc[9] << 3) | ((alphaenc[10] & 3) << 6);
+   *blkaddr++ = (alphaenc[10] >> 2) | (alphaenc[11] << 1) | (alphaenc[12] << 4) | ((alphaenc[13] & 1) << 7);
+   *blkaddr++ = (alphaenc[13] >> 1) | (alphaenc[14] << 2) | (alphaenc[15] << 5);
+}
+static void TAG(encode_rgtc_chan)(TYPE *blkaddr, TYPE srccolors[4][4],
+			     GLint numxpixels, GLint numypixels)
+{
+   TYPE alphabase[2], alphause[2];
+   GLshort alphatest[2] = { 0 };
+   GLuint alphablockerror1, alphablockerror2, alphablockerror3;
+   TYPE i, j, aindex, acutValues[7];
+   TYPE alphaenc1[16], alphaenc2[16], alphaenc3[16];
+   GLboolean alphaabsmin = GL_FALSE;
+   GLboolean alphaabsmax = GL_FALSE;
+   GLshort alphadist;
+
+   /* find lowest and highest alpha value in block, alphabase[0] lowest, alphabase[1] highest */
+   alphabase[0] = T_MAX; alphabase[1] = T_MIN;
+   for (j = 0; j < numypixels; j++) {
+      for (i = 0; i < numxpixels; i++) {
+	 if (srccolors[j][i] == T_MIN)
+            alphaabsmin = GL_TRUE;
+         else if (srccolors[j][i] == T_MAX)
+            alphaabsmax = GL_TRUE;
+         else {
+            if (srccolors[j][i] > alphabase[1])
+               alphabase[1] = srccolors[j][i];
+            if (srccolors[j][i] < alphabase[0])
+               alphabase[0] = srccolors[j][i];
+         }
+      }
+   }
+
+
+   if ((alphabase[0] > alphabase[1]) && !(alphaabsmin && alphaabsmax)) { /* one color, either max or min */
+      /* shortcut here since it is a very common case (and also avoids later problems) */
+      /* || (alphabase[0] == alphabase[1] && !alphaabsmin && !alphaabsmax) */
+      /* could also thest for alpha0 == alpha1 (and not min/max), but probably not common, so don't bother */
+
+      *blkaddr++ = srccolors[0][0];
+      blkaddr++;
+      *blkaddr++ = 0;
+      *blkaddr++ = 0;
+      *blkaddr++ = 0;
+      *blkaddr++ = 0;
+      *blkaddr++ = 0;
+      *blkaddr++ = 0;
+#if RGTC_DEBUG
+      fprintf(stderr, "enc0 used\n");
+#endif
+      return;
+   }
+
+   /* find best encoding for alpha0 > alpha1 */
+   /* it's possible this encoding is better even if both alphaabsmin and alphaabsmax are true */
+   alphablockerror1 = 0x0;
+   alphablockerror2 = 0xffffffff;
+   alphablockerror3 = 0xffffffff;
+   if (alphaabsmin) alphause[0] = T_MIN;
+   else alphause[0] = alphabase[0];
+   if (alphaabsmax) alphause[1] = T_MAX;
+   else alphause[1] = alphabase[1];
+   /* calculate the 7 cut values, just the middle between 2 of the computed alpha values */
+   for (aindex = 0; aindex < 7; aindex++) {
+      /* don't forget here is always rounded down */
+      acutValues[aindex] = (alphause[0] * (2*aindex + 1) + alphause[1] * (14 - (2*aindex + 1))) / 14;
+   }
+
+   for (j = 0; j < numypixels; j++) {
+      for (i = 0; i < numxpixels; i++) {
+         /* maybe it's overkill to have the most complicated calculation just for the error
+            calculation which we only need to figure out if encoding1 or encoding2 is better... */
+         if (srccolors[j][i] > acutValues[0]) {
+            alphaenc1[4*j + i] = 0;
+            alphadist = srccolors[j][i] - alphause[1];
+         }
+         else if (srccolors[j][i] > acutValues[1]) {
+            alphaenc1[4*j + i] = 2;
+            alphadist = srccolors[j][i] - (alphause[1] * 6 + alphause[0] * 1) / 7;
+         }
+         else if (srccolors[j][i] > acutValues[2]) {
+            alphaenc1[4*j + i] = 3;
+            alphadist = srccolors[j][i] - (alphause[1] * 5 + alphause[0] * 2) / 7;
+         }
+         else if (srccolors[j][i] > acutValues[3]) {
+            alphaenc1[4*j + i] = 4;
+            alphadist = srccolors[j][i] - (alphause[1] * 4 + alphause[0] * 3) / 7;
+         }
+         else if (srccolors[j][i] > acutValues[4]) {
+            alphaenc1[4*j + i] = 5;
+            alphadist = srccolors[j][i] - (alphause[1] * 3 + alphause[0] * 4) / 7;
+         }
+         else if (srccolors[j][i] > acutValues[5]) {
+            alphaenc1[4*j + i] = 6;
+            alphadist = srccolors[j][i] - (alphause[1] * 2 + alphause[0] * 5) / 7;
+         }
+         else if (srccolors[j][i] > acutValues[6]) {
+            alphaenc1[4*j + i] = 7;
+            alphadist = srccolors[j][i] - (alphause[1] * 1 + alphause[0] * 6) / 7;
+         }
+         else {
+            alphaenc1[4*j + i] = 1;
+            alphadist = srccolors[j][i] - alphause[0];
+         }
+         alphablockerror1 += alphadist * alphadist;
+      }
+   }
+
+#if RGTC_DEBUG
+   for (i = 0; i < 16; i++) {
+      fprintf(stderr, "%d ", alphaenc1[i]);
+   }
+   fprintf(stderr, "cutVals ");
+   for (i = 0; i < 8; i++) {
+      fprintf(stderr, "%d ", acutValues[i]);
+   }
+   fprintf(stderr, "srcVals ");
+   for (j = 0; j < numypixels; j++) {
+      for (i = 0; i < numxpixels; i++) {
+	 fprintf(stderr, "%d ", srccolors[j][i]);
+      }
+   }
+   fprintf(stderr, "\n");
+#endif
+
+   /* it's not very likely this encoding is better if both alphaabsmin and alphaabsmax
+      are false but try it anyway */
+   if (alphablockerror1 >= 32) {
+
+      /* don't bother if encoding is already very good, this condition should also imply
+      we have valid alphabase colors which we absolutely need (alphabase[0] <= alphabase[1]) */
+      alphablockerror2 = 0;
+      for (aindex = 0; aindex < 5; aindex++) {
+         /* don't forget here is always rounded down */
+         acutValues[aindex] = (alphabase[0] * (10 - (2*aindex + 1)) + alphabase[1] * (2*aindex + 1)) / 10;
+      }
+      for (j = 0; j < numypixels; j++) {
+         for (i = 0; i < numxpixels; i++) {
+             /* maybe it's overkill to have the most complicated calculation just for the error
+               calculation which we only need to figure out if encoding1 or encoding2 is better... */
+            if (srccolors[j][i] == T_MIN) {
+               alphaenc2[4*j + i] = 6;
+               alphadist = 0;
+            }
+            else if (srccolors[j][i] == T_MAX) {
+               alphaenc2[4*j + i] = 7;
+               alphadist = 0;
+            }
+            else if (srccolors[j][i] <= acutValues[0]) {
+               alphaenc2[4*j + i] = 0;
+               alphadist = srccolors[j][i] - alphabase[0];
+            }
+            else if (srccolors[j][i] <= acutValues[1]) {
+               alphaenc2[4*j + i] = 2;
+               alphadist = srccolors[j][i] - (alphabase[0] * 4 + alphabase[1] * 1) / 5;
+            }
+            else if (srccolors[j][i] <= acutValues[2]) {
+               alphaenc2[4*j + i] = 3;
+               alphadist = srccolors[j][i] - (alphabase[0] * 3 + alphabase[1] * 2) / 5;
+            }
+            else if (srccolors[j][i] <= acutValues[3]) {
+               alphaenc2[4*j + i] = 4;
+               alphadist = srccolors[j][i] - (alphabase[0] * 2 + alphabase[1] * 3) / 5;
+            }
+            else if (srccolors[j][i] <= acutValues[4]) {
+               alphaenc2[4*j + i] = 5;
+               alphadist = srccolors[j][i] - (alphabase[0] * 1 + alphabase[1] * 4) / 5;
+            }
+            else {
+               alphaenc2[4*j + i] = 1;
+               alphadist = srccolors[j][i] - alphabase[1];
+            }
+            alphablockerror2 += alphadist * alphadist;
+         }
+      }
+
+
+      /* skip this if the error is already very small
+         this encoding is MUCH better on average than #2 though, but expensive! */
+      if ((alphablockerror2 > 96) && (alphablockerror1 > 96)) {
+         GLshort blockerrlin1 = 0;
+         GLshort blockerrlin2 = 0;
+         TYPE nralphainrangelow = 0;
+         TYPE nralphainrangehigh = 0;
+         alphatest[0] = 0xff;
+         alphatest[1] = 0x0;
+         /* if we have large range it's likely there are values close to 0/255, try to map them to 0/255 */
+         for (j = 0; j < numypixels; j++) {
+            for (i = 0; i < numxpixels; i++) {
+               if ((srccolors[j][i] > alphatest[1]) && (srccolors[j][i] < (T_MAX -(alphabase[1] - alphabase[0]) / 28)))
+                  alphatest[1] = srccolors[j][i];
+               if ((srccolors[j][i] < alphatest[0]) && (srccolors[j][i] > (alphabase[1] - alphabase[0]) / 28))
+                  alphatest[0] = srccolors[j][i];
+            }
+         }
+          /* shouldn't happen too often, don't really care about those degenerated cases */
+          if (alphatest[1] <= alphatest[0]) {
+             alphatest[0] = 1;
+             alphatest[1] = 254;
+         }
+         for (aindex = 0; aindex < 5; aindex++) {
+         /* don't forget here is always rounded down */
+            acutValues[aindex] = (alphatest[0] * (10 - (2*aindex + 1)) + alphatest[1] * (2*aindex + 1)) / 10;
+         }
+
+         /* find the "average" difference between the alpha values and the next encoded value.
+            This is then used to calculate new base values.
+            Should there be some weighting, i.e. those values closer to alphatest[x] have more weight,
+            since they will see more improvement, and also because the values in the middle are somewhat
+            likely to get no improvement at all (because the base values might move in different directions)?
+            OTOH it would mean the values in the middle are even less likely to get an improvement
+         */
+         for (j = 0; j < numypixels; j++) {
+            for (i = 0; i < numxpixels; i++) {
+               if (srccolors[j][i] <= alphatest[0] / 2) {
+               }
+               else if (srccolors[j][i] > ((T_MAX + alphatest[1]) / 2)) {
+               }
+               else if (srccolors[j][i] <= acutValues[0]) {
+                  blockerrlin1 += (srccolors[j][i] - alphatest[0]);
+                  nralphainrangelow += 1;
+               }
+               else if (srccolors[j][i] <= acutValues[1]) {
+                  blockerrlin1 += (srccolors[j][i] - (alphatest[0] * 4 + alphatest[1] * 1) / 5);
+                  blockerrlin2 += (srccolors[j][i] - (alphatest[0] * 4 + alphatest[1] * 1) / 5);
+                  nralphainrangelow += 1;
+                  nralphainrangehigh += 1;
+               }
+               else if (srccolors[j][i] <= acutValues[2]) {
+                  blockerrlin1 += (srccolors[j][i] - (alphatest[0] * 3 + alphatest[1] * 2) / 5);
+                  blockerrlin2 += (srccolors[j][i] - (alphatest[0] * 3 + alphatest[1] * 2) / 5);
+                  nralphainrangelow += 1;
+                  nralphainrangehigh += 1;
+               }
+               else if (srccolors[j][i] <= acutValues[3]) {
+                  blockerrlin1 += (srccolors[j][i] - (alphatest[0] * 2 + alphatest[1] * 3) / 5);
+                  blockerrlin2 += (srccolors[j][i] - (alphatest[0] * 2 + alphatest[1] * 3) / 5);
+                  nralphainrangelow += 1;
+                  nralphainrangehigh += 1;
+               }
+               else if (srccolors[j][i] <= acutValues[4]) {
+                  blockerrlin1 += (srccolors[j][i] - (alphatest[0] * 1 + alphatest[1] * 4) / 5);
+                  blockerrlin2 += (srccolors[j][i] - (alphatest[0] * 1 + alphatest[1] * 4) / 5);
+                  nralphainrangelow += 1;
+                  nralphainrangehigh += 1;
+                  }
+               else {
+                  blockerrlin2 += (srccolors[j][i] - alphatest[1]);
+                  nralphainrangehigh += 1;
+               }
+            }
+         }
+         /* shouldn't happen often, needed to avoid div by zero */
+         if (nralphainrangelow == 0) nralphainrangelow = 1;
+         if (nralphainrangehigh == 0) nralphainrangehigh = 1;
+         alphatest[0] = alphatest[0] + (blockerrlin1 / nralphainrangelow);
+#if RGTC_DEBUG
+         fprintf(stderr, "block err lin low %d, nr %d\n", blockerrlin1, nralphainrangelow);
+         fprintf(stderr, "block err lin high %d, nr %d\n", blockerrlin2, nralphainrangehigh);
+#endif
+         /* again shouldn't really happen often... */
+         if (alphatest[0] < T_MIN) {
+            alphatest[0] = T_MIN;
+         }
+         alphatest[1] = alphatest[1] + (blockerrlin2 / nralphainrangehigh);
+         if (alphatest[1] > T_MAX) {
+            alphatest[1] = T_MIN;
+         }
+
+         alphablockerror3 = 0;
+         for (aindex = 0; aindex < 5; aindex++) {
+         /* don't forget here is always rounded down */
+            acutValues[aindex] = (alphatest[0] * (10 - (2*aindex + 1)) + alphatest[1] * (2*aindex + 1)) / 10;
+         }
+         for (j = 0; j < numypixels; j++) {
+            for (i = 0; i < numxpixels; i++) {
+                /* maybe it's overkill to have the most complicated calculation just for the error
+                  calculation which we only need to figure out if encoding1 or encoding2 is better... */
+               if (srccolors[j][i] <= alphatest[0] / 2) {
+                  alphaenc3[4*j + i] = 6;
+                  alphadist = srccolors[j][i];
+               }
+               else if (srccolors[j][i] > ((T_MAX + alphatest[1]) / 2)) {
+                  alphaenc3[4*j + i] = 7;
+                  alphadist = T_MAX - srccolors[j][i];
+               }
+               else if (srccolors[j][i] <= acutValues[0]) {
+                  alphaenc3[4*j + i] = 0;
+                  alphadist = srccolors[j][i] - alphatest[0];
+               }
+               else if (srccolors[j][i] <= acutValues[1]) {
+                 alphaenc3[4*j + i] = 2;
+                 alphadist = srccolors[j][i] - (alphatest[0] * 4 + alphatest[1] * 1) / 5;
+               }
+               else if (srccolors[j][i] <= acutValues[2]) {
+                  alphaenc3[4*j + i] = 3;
+                  alphadist = srccolors[j][i] - (alphatest[0] * 3 + alphatest[1] * 2) / 5;
+               }
+               else if (srccolors[j][i] <= acutValues[3]) {
+                  alphaenc3[4*j + i] = 4;
+                  alphadist = srccolors[j][i] - (alphatest[0] * 2 + alphatest[1] * 3) / 5;
+               }
+               else if (srccolors[j][i] <= acutValues[4]) {
+                  alphaenc3[4*j + i] = 5;
+                  alphadist = srccolors[j][i] - (alphatest[0] * 1 + alphatest[1] * 4) / 5;
+               }
+               else {
+                  alphaenc3[4*j + i] = 1;
+                  alphadist = srccolors[j][i] - alphatest[1];
+               }
+               alphablockerror3 += alphadist * alphadist;
+            }
+         }
+      }
+   }
+  /* write the alpha values and encoding back. */
+   if ((alphablockerror1 <= alphablockerror2) && (alphablockerror1 <= alphablockerror3)) {
+#if RGTC_DEBUG
+      if (alphablockerror1 > 96) fprintf(stderr, "enc1 used, error %d\n", alphablockerror1);
+#endif
+      TAG(write_rgtc_encoded_channel)( blkaddr, alphause[1], alphause[0], alphaenc1 );
+   }
+   else if (alphablockerror2 <= alphablockerror3) {
+#if RGTC_DEBUG
+      if (alphablockerror2 > 96) fprintf(stderr, "enc2 used, error %d\n", alphablockerror2);
+#endif
+      TAG(write_rgtc_encoded_channel)( blkaddr, alphabase[0], alphabase[1], alphaenc2 );
+   }
+   else {
+#if RGTC_DEBUG
+      fprintf(stderr, "enc3 used, error %d\n", alphablockerror3);
+#endif
+      TAG(write_rgtc_encoded_channel)( blkaddr, (TYPE)alphatest[0], (TYPE)alphatest[1], alphaenc3 );
+   }
+}
diff --git a/mesalib/src/mesa/main/texgetimage.c b/mesalib/src/mesa/main/texgetimage.c
index c3f7d3c32..21d9140c5 100644
--- a/mesalib/src/mesa/main/texgetimage.c
+++ b/mesalib/src/mesa/main/texgetimage.c
@@ -1,917 +1,918 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.7

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (c) 2009 VMware, Inc.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-/**

- * Code for glGetTexImage() and glGetCompressedTexImage().

- */

-

-

-#include "glheader.h"

-#include "bufferobj.h"

-#include "enums.h"

-#include "context.h"

-#include "formats.h"

-#include "image.h"

-#include "mfeatures.h"

-#include "mtypes.h"

-#include "pack.h"

-#include "texgetimage.h"

-#include "teximage.h"

-

-

-

-/**

- * Can the given type represent negative values?

- */

-static INLINE GLboolean

-type_with_negative_values(GLenum type)

-{

-   switch (type) {

-   case GL_BYTE:

-   case GL_SHORT:

-   case GL_INT:

-   case GL_FLOAT:

-   case GL_HALF_FLOAT_ARB:

-      return GL_TRUE;

-   default:

-      return GL_FALSE;

-   }

-}

-

-

-/**

- * glGetTexImage for color index pixels.

- */

-static void

-get_tex_color_index(struct gl_context *ctx, GLuint dimensions,

-                    GLenum format, GLenum type, GLvoid *pixels,

-                    const struct gl_texture_image *texImage)

-{

-   const GLint width = texImage->Width;

-   const GLint height = texImage->Height;

-   const GLint depth = texImage->Depth;

-   const GLuint indexBits =

-      _mesa_get_format_bits(texImage->TexFormat, GL_TEXTURE_INDEX_SIZE_EXT);

-   const GLbitfield transferOps = 0x0;

-   GLint img, row, col;

-

-   for (img = 0; img < depth; img++) {

-      for (row = 0; row < height; row++) {

-         GLuint indexRow[MAX_WIDTH] = { 0 };

-         void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,

-                                          width, height, format, type,

-                                          img, row, 0);

-         assert(dest);

-

-         if (indexBits == 8) {

-            const GLubyte *src = (const GLubyte *) texImage->Data;

-            src += width * (img * texImage->Height + row);

-            for (col = 0; col < width; col++) {

-               indexRow[col] = src[col];

-            }

-         }

-         else if (indexBits == 16) {

-            const GLushort *src = (const GLushort *) texImage->Data;

-            src += width * (img * texImage->Height + row);

-            for (col = 0; col < width; col++) {

-               indexRow[col] = src[col];

-            }

-         }

-         else {

-            _mesa_problem(ctx, "Color index problem in _mesa_GetTexImage");

-         }

-         _mesa_pack_index_span(ctx, width, type, dest,

-                               indexRow, &ctx->Pack, transferOps);

-      }

-   }

-}

-

-

-/**

- * glGetTexImage for depth/Z pixels.

- */

-static void

-get_tex_depth(struct gl_context *ctx, GLuint dimensions,

-              GLenum format, GLenum type, GLvoid *pixels,

-              const struct gl_texture_image *texImage)

-{

-   const GLint width = texImage->Width;

-   const GLint height = texImage->Height;

-   const GLint depth = texImage->Depth;

-   GLint img, row, col;

-   GLfloat *depthRow = (GLfloat *) malloc(width * sizeof(GLfloat));

-

-   if (!depthRow) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");

-      return;

-   }

-

-   for (img = 0; img < depth; img++) {

-      for (row = 0; row < height; row++) {

-         void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,

-                                          width, height, format, type,

-                                          img, row, 0);

-         assert(dest);

-

-         for (col = 0; col < width; col++) {

-            texImage->FetchTexelf(texImage, col, row, img, depthRow + col);

-         }

-         _mesa_pack_depth_span(ctx, width, dest, type, depthRow, &ctx->Pack);

-      }

-   }

-

-   free(depthRow);

-}

-

-

-/**

- * glGetTexImage for depth/stencil pixels.

- */

-static void

-get_tex_depth_stencil(struct gl_context *ctx, GLuint dimensions,

-                      GLenum format, GLenum type, GLvoid *pixels,

-                      const struct gl_texture_image *texImage)

-{

-   const GLint width = texImage->Width;

-   const GLint height = texImage->Height;

-   const GLint depth = texImage->Depth;

-   const GLuint *src = (const GLuint *) texImage->Data;

-   GLint img, row;

-

-   for (img = 0; img < depth; img++) {

-      for (row = 0; row < height; row++) {

-         void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,

-                                          width, height, format, type,

-                                          img, row, 0);

-         memcpy(dest, src, width * sizeof(GLuint));

-         if (ctx->Pack.SwapBytes) {

-            _mesa_swap4((GLuint *) dest, width);

-         }

-

-         src += width * row + width * height * img;

-      }

-   }

-}

-

-

-/**

- * glGetTexImage for YCbCr pixels.

- */

-static void

-get_tex_ycbcr(struct gl_context *ctx, GLuint dimensions,

-              GLenum format, GLenum type, GLvoid *pixels,

-              const struct gl_texture_image *texImage)

-{

-   const GLint width = texImage->Width;

-   const GLint height = texImage->Height;

-   const GLint depth = texImage->Depth;

-   const GLint rowstride = texImage->RowStride;

-   const GLushort *src = (const GLushort *) texImage->Data;

-   GLint img, row;

-

-   for (img = 0; img < depth; img++) {

-      for (row = 0; row < height; row++) {

-         void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,

-                                          width, height, format, type,

-                                          img, row, 0);

-         memcpy(dest, src, width * sizeof(GLushort));

-

-         /* check for byte swapping */

-         if ((texImage->TexFormat == MESA_FORMAT_YCBCR

-              && type == GL_UNSIGNED_SHORT_8_8_REV_MESA) ||

-             (texImage->TexFormat == MESA_FORMAT_YCBCR_REV

-              && type == GL_UNSIGNED_SHORT_8_8_MESA)) {

-            if (!ctx->Pack.SwapBytes)

-               _mesa_swap2((GLushort *) dest, width);

-         }

-         else if (ctx->Pack.SwapBytes) {

-            _mesa_swap2((GLushort *) dest, width);

-         }

-

-         src += rowstride;

-      }

-   }

-}

-

-

-#if FEATURE_EXT_texture_sRGB

-

-

-/**

- * Convert a float value from linear space to a

- * non-linear sRGB value in [0, 255].

- * Not terribly efficient.

- */

-static INLINE GLfloat

-linear_to_nonlinear(GLfloat cl)

-{

-   /* can't have values outside [0, 1] */

-   GLfloat cs;

-   if (cl < 0.0031308f) {

-      cs = 12.92f * cl;

-   }

-   else {

-      cs = (GLfloat)(1.055 * pow(cl, 0.41666) - 0.055);

-   }

-   return cs;

-}

-

-

-/**

- * glGetTexImagefor sRGB pixels;

- */

-static void

-get_tex_srgb(struct gl_context *ctx, GLuint dimensions,

-             GLenum format, GLenum type, GLvoid *pixels,

-             const struct gl_texture_image *texImage)

-{

-   const GLint width = texImage->Width;

-   const GLint height = texImage->Height;

-   const GLint depth = texImage->Depth;

-   const GLbitfield transferOps = 0x0;

-   GLint img, row;

-   GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));

-

-   if (!rgba) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");

-      return;

-   }

-

-   for (img = 0; img < depth; img++) {

-      for (row = 0; row < height; row++) {

-         void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,

-                                          width, height, format, type,

-                                          img, row, 0);

-

-         GLint col;

-

-         /* convert row to RGBA format */

-         for (col = 0; col < width; col++) {

-            texImage->FetchTexelf(texImage, col, row, img, rgba[col]);

-            if (texImage->_BaseFormat == GL_LUMINANCE) {

-               rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]);

-               rgba[col][GCOMP] = 0.0;

-               rgba[col][BCOMP] = 0.0;

-            }

-            else if (texImage->_BaseFormat == GL_LUMINANCE_ALPHA) {

-               rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]);

-               rgba[col][GCOMP] = 0.0;

-               rgba[col][BCOMP] = 0.0;

-            }

-            else if (texImage->_BaseFormat == GL_RGB ||

-                     texImage->_BaseFormat == GL_RGBA) {

-               rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]);

-               rgba[col][GCOMP] = linear_to_nonlinear(rgba[col][GCOMP]);

-               rgba[col][BCOMP] = linear_to_nonlinear(rgba[col][BCOMP]);

-            }

-         }

-         _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba,

-                                    format, type, dest,

-                                    &ctx->Pack, transferOps);

-      }

-   }

-

-   free(rgba);

-}

-

-

-#else /* FEATURE_EXT_texture_sRGB */

-

-

-static INLINE void

-get_tex_srgb(struct gl_context *ctx, GLuint dimensions,

-             GLenum format, GLenum type, GLvoid *pixels,

-             const struct gl_texture_image *texImage)

-{

-   ASSERT_NO_FEATURE();

-}

-

-

-#endif /* FEATURE_EXT_texture_sRGB */

-

-

-/**

- * glGetTexImagefor RGBA, Luminance, etc. pixels.

- * This is the slow way since we use texture sampling.

- */

-static void

-get_tex_rgba(struct gl_context *ctx, GLuint dimensions,

-             GLenum format, GLenum type, GLvoid *pixels,

-             const struct gl_texture_image *texImage)

-{

-   const GLint width = texImage->Width;

-   const GLint height = texImage->Height;

-   const GLint depth = texImage->Depth;

-   /* Normally, no pixel transfer ops are performed during glGetTexImage.

-    * The only possible exception is component clamping to [0,1].

-    */

-   GLbitfield transferOps = 0x0;

-   GLint img, row;

-   GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));

-

-   if (!rgba) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");

-      return;

-   }

-

-   for (img = 0; img < depth; img++) {

-      for (row = 0; row < height; row++) {

-         void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,

-                                          width, height, format, type,

-                                          img, row, 0);

-         GLint col;

-         GLenum dataType = _mesa_get_format_datatype(texImage->TexFormat);

-

-         /* clamp does not apply to GetTexImage (final conversion)?

-          * Looks like we need clamp though when going from format

-          * containing negative values to unsigned format.

-          */

-         if (format == GL_LUMINANCE || format == GL_LUMINANCE_ALPHA) {

-            transferOps |= IMAGE_CLAMP_BIT;

-         }

-         else if (!type_with_negative_values(type) &&

-                  (dataType == GL_FLOAT ||

-                   dataType == GL_SIGNED_NORMALIZED)) {

-            transferOps |= IMAGE_CLAMP_BIT;

-         }

-

-         for (col = 0; col < width; col++) {

-            texImage->FetchTexelf(texImage, col, row, img, rgba[col]);

-            if (texImage->_BaseFormat == GL_ALPHA) {

-               rgba[col][RCOMP] = 0.0F;

-               rgba[col][GCOMP] = 0.0F;

-               rgba[col][BCOMP] = 0.0F;

-            }

-            else if (texImage->_BaseFormat == GL_LUMINANCE) {

-               rgba[col][GCOMP] = 0.0F;

-               rgba[col][BCOMP] = 0.0F;

-               rgba[col][ACOMP] = 1.0F;

-            }

-            else if (texImage->_BaseFormat == GL_LUMINANCE_ALPHA) {

-               rgba[col][GCOMP] = 0.0F;

-               rgba[col][BCOMP] = 0.0F;

-            }

-            else if (texImage->_BaseFormat == GL_INTENSITY) {

-               rgba[col][GCOMP] = 0.0F;

-               rgba[col][BCOMP] = 0.0F;

-               rgba[col][ACOMP] = 1.0F;

-            }

-         }

-         _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba,

-                                    format, type, dest,

-                                    &ctx->Pack, transferOps);

-      }

-   }

-

-   free(rgba);

-}

-

-

-/**

- * Try to do glGetTexImage() with simple memcpy().

- * \return GL_TRUE if done, GL_FALSE otherwise

- */

-static GLboolean

-get_tex_memcpy(struct gl_context *ctx, GLenum format, GLenum type, GLvoid *pixels,

-               const struct gl_texture_object *texObj,

-               const struct gl_texture_image *texImage)

-{

-   GLboolean memCopy = GL_FALSE;

-

-   /* Texture image should have been mapped already */

-   assert(texImage->Data);

-

-   /*

-    * Check if the src/dst formats are compatible.

-    * Also note that GL's pixel transfer ops don't apply to glGetTexImage()

-    * so we don't have to worry about those.

-    * XXX more format combinations could be supported here.

-    */

-   if ((texObj->Target == GL_TEXTURE_1D ||

-        texObj->Target == GL_TEXTURE_2D ||

-        texObj->Target == GL_TEXTURE_RECTANGLE ||

-        (texObj->Target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X &&

-         texObj->Target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z))) {

-      if (texImage->TexFormat == MESA_FORMAT_ARGB8888 &&

-          format == GL_BGRA &&

-          type == GL_UNSIGNED_BYTE &&

-          !ctx->Pack.SwapBytes &&

-          _mesa_little_endian()) {

-         memCopy = GL_TRUE;

-      }

-      else if (texImage->TexFormat == MESA_FORMAT_AL88 &&

-               format == GL_LUMINANCE_ALPHA &&

-               type == GL_UNSIGNED_BYTE &&

-               !ctx->Pack.SwapBytes &&

-               _mesa_little_endian()) {

-         memCopy = GL_TRUE;

-      }

-      else if (texImage->TexFormat == MESA_FORMAT_L8 &&

-               format == GL_LUMINANCE &&

-               type == GL_UNSIGNED_BYTE) {

-         memCopy = GL_TRUE;

-      }

-      else if (texImage->TexFormat == MESA_FORMAT_L16 &&

-               format == GL_LUMINANCE &&

-               type == GL_UNSIGNED_SHORT) {

-         memCopy = GL_TRUE;

-      }

-      else if (texImage->TexFormat == MESA_FORMAT_A8 &&

-               format == GL_ALPHA &&

-               type == GL_UNSIGNED_BYTE) {

-         memCopy = GL_TRUE;

-      }

-      else if (texImage->TexFormat == MESA_FORMAT_A16 &&

-               format == GL_ALPHA &&

-               type == GL_UNSIGNED_SHORT) {

-         memCopy = GL_TRUE;

-      }

-   }

-

-   if (memCopy) {

-      const GLuint bpp = _mesa_get_format_bytes(texImage->TexFormat);

-      const GLuint bytesPerRow = texImage->Width * bpp;

-      GLubyte *dst =

-         _mesa_image_address2d(&ctx->Pack, pixels, texImage->Width,

-                               texImage->Height, format, type, 0, 0);

-      const GLint dstRowStride =

-         _mesa_image_row_stride(&ctx->Pack, texImage->Width, format, type);

-      const GLubyte *src = texImage->Data;

-      const GLint srcRowStride = texImage->RowStride * bpp;

-      GLuint row;

-

-      if (bytesPerRow == dstRowStride && bytesPerRow == srcRowStride) {

-         memcpy(dst, src, bytesPerRow * texImage->Height);

-      }

-      else {

-         for (row = 0; row < texImage->Height; row++) {

-            memcpy(dst, src, bytesPerRow);

-            dst += dstRowStride;

-            src += srcRowStride;

-         }

-      }

-   }

-

-   return memCopy;

-}

-

-

-/**

- * This is the software fallback for Driver.GetTexImage().

- * All error checking will have been done before this routine is called.

- * The texture image must be mapped.

- */

-void

-_mesa_get_teximage(struct gl_context *ctx, GLenum target, GLint level,

-                   GLenum format, GLenum type, GLvoid *pixels,

-                   struct gl_texture_object *texObj,

-                   struct gl_texture_image *texImage)

-{

-   GLuint dimensions;

-

-   /* If we get here, the texture image should be mapped */

-   assert(texImage->Data);

-

-   switch (target) {

-   case GL_TEXTURE_1D:

-      dimensions = 1;

-      break;

-   case GL_TEXTURE_3D:

-      dimensions = 3;

-      break;

-   default:

-      dimensions = 2;

-   }

-

-   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {

-      /* Packing texture image into a PBO.

-       * Map the (potentially) VRAM-based buffer into our process space so

-       * we can write into it with the code below.

-       * A hardware driver might use a sophisticated blit to move the

-       * texture data to the PBO if the PBO is in VRAM along with the texture.

-       */

-      GLubyte *buf = (GLubyte *)

-         ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,

-                               GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj);

-      if (!buf) {

-         /* out of memory or other unexpected error */

-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage(map PBO failed)");

-         return;

-      }

-      /* <pixels> was an offset into the PBO.

-       * Now make it a real, client-side pointer inside the mapped region.

-       */

-      pixels = ADD_POINTERS(buf, pixels);

-   }

-

-   if (get_tex_memcpy(ctx, format, type, pixels, texObj, texImage)) {

-      /* all done */

-   }

-   else if (format == GL_COLOR_INDEX) {

-      get_tex_color_index(ctx, dimensions, format, type, pixels, texImage);

-   }

-   else if (format == GL_DEPTH_COMPONENT) {

-      get_tex_depth(ctx, dimensions, format, type, pixels, texImage);

-   }

-   else if (format == GL_DEPTH_STENCIL_EXT) {

-      get_tex_depth_stencil(ctx, dimensions, format, type, pixels, texImage);

-   }

-   else if (format == GL_YCBCR_MESA) {

-      get_tex_ycbcr(ctx, dimensions, format, type, pixels, texImage);

-   }

-   else if (_mesa_get_format_color_encoding(texImage->TexFormat) == GL_SRGB) {

-      get_tex_srgb(ctx, dimensions, format, type, pixels, texImage);

-   }

-   else {

-      get_tex_rgba(ctx, dimensions, format, type, pixels, texImage);

-   }

-

-   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {

-      ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,

-                              ctx->Pack.BufferObj);

-   }

-}

-

-

-

-/**

- * This is the software fallback for Driver.GetCompressedTexImage().

- * All error checking will have been done before this routine is called.

- */

-void

-_mesa_get_compressed_teximage(struct gl_context *ctx, GLenum target, GLint level,

-                              GLvoid *img,

-                              struct gl_texture_object *texObj,

-                              struct gl_texture_image *texImage)

-{

-   const GLuint row_stride = _mesa_format_row_stride(texImage->TexFormat,

-                                                     texImage->Width);

-   const GLuint row_stride_stored = _mesa_format_row_stride(texImage->TexFormat,

-                                                            texImage->RowStride);

-   GLuint i;

-

-   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {

-      /* pack texture image into a PBO */

-      GLubyte *buf = (GLubyte *)

-         ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,

-                               GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj);

-      if (!buf) {

-         /* out of memory or other unexpected error */

-         _mesa_error(ctx, GL_OUT_OF_MEMORY,

-                     "glGetCompresssedTexImage(map PBO failed)");

-         return;

-      }

-      img = ADD_POINTERS(buf, img);

-   }

-

-   /* no pixelstore or pixel transfer, but respect stride */

-

-   if (row_stride == row_stride_stored) {

-      const GLuint size = _mesa_format_image_size(texImage->TexFormat,

-                                                  texImage->Width,

-                                                  texImage->Height,

-                                                  texImage->Depth);

-      memcpy(img, texImage->Data, size);

-   }

-   else {

-      GLuint bw, bh;

-      _mesa_get_format_block_size(texImage->TexFormat, &bw, &bh);

-      for (i = 0; i < (texImage->Height + bh - 1) / bh; i++) {

-         memcpy((GLubyte *)img + i * row_stride,

-                (GLubyte *)texImage->Data + i * row_stride_stored,

-                row_stride);

-      }

-   }

-

-   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {

-      ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,

-                              ctx->Pack.BufferObj);

-   }

-}

-

-

-

-/**

- * Do error checking for a glGetTexImage() call.

- * \return GL_TRUE if any error, GL_FALSE if no errors.

- */

-static GLboolean

-getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level,

-                        GLenum format, GLenum type, GLvoid *pixels )

-{

-   struct gl_texture_object *texObj;

-   struct gl_texture_image *texImage;

-   const GLint maxLevels = _mesa_max_texture_levels(ctx, target);

-   GLenum baseFormat;

-

-   if (maxLevels == 0) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target=0x%x)", target);

-      return GL_TRUE;

-   }

-

-   if (level < 0 || level >= maxLevels) {

-      _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexImage(level)" );

-      return GL_TRUE;

-   }

-

-   if (_mesa_sizeof_packed_type(type) <= 0) {

-      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexImage(type)" );

-      return GL_TRUE;

-   }

-

-   if (_mesa_components_in_format(format) <= 0 ||

-       format == GL_STENCIL_INDEX) {

-      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexImage(format)" );

-      return GL_TRUE;

-   }

-

-   if (!ctx->Extensions.EXT_paletted_texture && _mesa_is_index_format(format)) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");

-      return GL_TRUE;

-   }

-

-   if (!ctx->Extensions.ARB_depth_texture && _mesa_is_depth_format(format)) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");

-      return GL_TRUE;

-   }

-

-   if (!ctx->Extensions.MESA_ycbcr_texture && _mesa_is_ycbcr_format(format)) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");

-      return GL_TRUE;

-   }

-

-   if (!ctx->Extensions.EXT_packed_depth_stencil

-       && _mesa_is_depthstencil_format(format)) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");

-      return GL_TRUE;

-   }

-

-   if (!ctx->Extensions.ATI_envmap_bumpmap

-       && _mesa_is_dudv_format(format)) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");

-      return GL_TRUE;

-   }

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-

-   if (!texObj || _mesa_is_proxy_texture(target)) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target)");

-      return GL_TRUE;

-   }

-

-   texImage = _mesa_select_tex_image(ctx, texObj, target, level);

-   if (!texImage) {

-      /* out of memory */

-      return GL_TRUE;

-   }

-

-   baseFormat = _mesa_get_format_base_format(texImage->TexFormat);

-      

-   /* Make sure the requested image format is compatible with the

-    * texture's format.  Note that a color index texture can be converted

-    * to RGBA so that combo is allowed.

-    */

-   if (_mesa_is_color_format(format)

-       && !_mesa_is_color_format(baseFormat)

-       && !_mesa_is_index_format(baseFormat)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");

-      return GL_TRUE;

-   }

-   else if (_mesa_is_index_format(format)

-            && !_mesa_is_index_format(baseFormat)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");

-      return GL_TRUE;

-   }

-   else if (_mesa_is_depth_format(format)

-            && !_mesa_is_depth_format(baseFormat)

-            && !_mesa_is_depthstencil_format(baseFormat)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");

-      return GL_TRUE;

-   }

-   else if (_mesa_is_ycbcr_format(format)

-            && !_mesa_is_ycbcr_format(baseFormat)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");

-      return GL_TRUE;

-   }

-   else if (_mesa_is_depthstencil_format(format)

-            && !_mesa_is_depthstencil_format(baseFormat)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");

-      return GL_TRUE;

-   }

-   else if (_mesa_is_dudv_format(format)

-            && !_mesa_is_dudv_format(baseFormat)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");

-      return GL_TRUE;

-   }

-

-   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {

-      /* packing texture image into a PBO */

-      const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2;

-      if (!_mesa_validate_pbo_access(dimensions, &ctx->Pack, texImage->Width,

-                                     texImage->Height, texImage->Depth,

-                                     format, type, pixels)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glGetTexImage(out of bounds PBO write)");

-         return GL_TRUE;

-      }

-

-      /* PBO should not be mapped */

-      if (_mesa_bufferobj_mapped(ctx->Pack.BufferObj)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glGetTexImage(PBO is mapped)");

-         return GL_TRUE;

-      }

-   }

-

-   return GL_FALSE;

-}

-

-

-

-/**

- * Get texture image.  Called by glGetTexImage.

- *

- * \param target texture target.

- * \param level image level.

- * \param format pixel data format for returned image.

- * \param type pixel data type for returned image.

- * \param pixels returned pixel data.

- */

-void GLAPIENTRY

-_mesa_GetTexImage( GLenum target, GLint level, GLenum format,

-                   GLenum type, GLvoid *pixels )

-{

-   struct gl_texture_object *texObj;

-   struct gl_texture_image *texImage;

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (getteximage_error_check(ctx, target, level, format, type, pixels)) {

-      return;

-   }

-

-   if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) {

-      /* not an error, do nothing */

-      return;

-   }

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-   texImage = _mesa_select_tex_image(ctx, texObj, target, level);

-

-   if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) {

-      _mesa_debug(ctx, "glGetTexImage(tex %u) format = %s, w=%d, h=%d,"

-                  " dstFmt=0x%x, dstType=0x%x\n",

-                  texObj->Name,

-                  _mesa_get_format_name(texImage->TexFormat),

-                  texImage->Width, texImage->Height,

-                  format, type);

-   }

-

-   _mesa_lock_texture(ctx, texObj);

-   {

-      ctx->Driver.GetTexImage(ctx, target, level, format, type, pixels,

-                              texObj, texImage);

-   }

-   _mesa_unlock_texture(ctx, texObj);

-}

-

-

-

-/**

- * Do error checking for a glGetCompressedTexImage() call.

- * \return GL_TRUE if any error, GL_FALSE if no errors.

- */

-static GLboolean

-getcompressedteximage_error_check(struct gl_context *ctx, GLenum target,

-                                  GLint level, GLvoid *img)

-{

-   struct gl_texture_object *texObj;

-   struct gl_texture_image *texImage;

-   const GLint maxLevels = _mesa_max_texture_levels(ctx, target);

-

-   if (maxLevels == 0) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImage(target=0x%x)",

-                  target);

-      return GL_TRUE;

-   }

-

-   if (level < 0 || level >= maxLevels) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glGetCompressedTexImageARB(bad level = %d)", level);

-      return GL_TRUE;

-   }

-

-   if (_mesa_is_proxy_texture(target)) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glGetCompressedTexImageARB(bad target = %s)",

-                  _mesa_lookup_enum_by_nr(target));

-      return GL_TRUE;

-   }

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-   if (!texObj) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImageARB(target)");

-      return GL_TRUE;

-   }

-

-   texImage = _mesa_select_tex_image(ctx, texObj, target, level);

-

-   if (!texImage) {

-      /* probably invalid mipmap level */

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glGetCompressedTexImageARB(level)");

-      return GL_TRUE;

-   }

-

-   if (!_mesa_is_format_compressed(texImage->TexFormat)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glGetCompressedTexImageARB(texture is not compressed)");

-      return GL_TRUE;

-   }

-

-   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {

-      GLuint compressedSize;

-

-      /* make sure PBO is not mapped */

-      if (_mesa_bufferobj_mapped(ctx->Pack.BufferObj)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glGetCompressedTexImage(PBO is mapped)");

-         return GL_TRUE;

-      }

-

-      compressedSize = _mesa_format_image_size(texImage->TexFormat,

-                                               texImage->Width,

-                                               texImage->Height,

-                                               texImage->Depth);

-

-      /* do bounds checking on PBO write */

-      if ((const GLubyte *) img + compressedSize >

-          (const GLubyte *) ctx->Pack.BufferObj->Size) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glGetCompressedTexImage(out of bounds PBO write)");

-         return GL_TRUE;

-      }

-   }

-

-   return GL_FALSE;

-}

-

-

-void GLAPIENTRY

-_mesa_GetCompressedTexImageARB(GLenum target, GLint level, GLvoid *img)

-{

-   struct gl_texture_object *texObj;

-   struct gl_texture_image *texImage;

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (getcompressedteximage_error_check(ctx, target, level, img)) {

-      return;

-   }

-

-   if (_mesa_is_bufferobj(ctx->Pack.BufferObj) && !img) {

-      /* not an error, do nothing */

-      return;

-   }

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-   texImage = _mesa_select_tex_image(ctx, texObj, target, level);

-

-   if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) {

-      _mesa_debug(ctx,

-                  "glGetCompressedTexImage(tex %u) format = %s, w=%d, h=%d\n",

-                  texObj->Name,

-                  _mesa_get_format_name(texImage->TexFormat),

-                  texImage->Width, texImage->Height);

-   }

-

-   _mesa_lock_texture(ctx, texObj);

-   {

-      ctx->Driver.GetCompressedTexImage(ctx, target, level, img,

-                                        texObj, texImage);

-   }

-   _mesa_unlock_texture(ctx, texObj);

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.7
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (c) 2009 VMware, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * Code for glGetTexImage() and glGetCompressedTexImage().
+ */
+
+
+#include "glheader.h"
+#include "bufferobj.h"
+#include "enums.h"
+#include "context.h"
+#include "formats.h"
+#include "image.h"
+#include "mfeatures.h"
+#include "mtypes.h"
+#include "pack.h"
+#include "pbo.h"
+#include "texgetimage.h"
+#include "teximage.h"
+
+
+
+/**
+ * Can the given type represent negative values?
+ */
+static INLINE GLboolean
+type_with_negative_values(GLenum type)
+{
+   switch (type) {
+   case GL_BYTE:
+   case GL_SHORT:
+   case GL_INT:
+   case GL_FLOAT:
+   case GL_HALF_FLOAT_ARB:
+      return GL_TRUE;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * glGetTexImage for color index pixels.
+ */
+static void
+get_tex_color_index(struct gl_context *ctx, GLuint dimensions,
+                    GLenum format, GLenum type, GLvoid *pixels,
+                    const struct gl_texture_image *texImage)
+{
+   const GLint width = texImage->Width;
+   const GLint height = texImage->Height;
+   const GLint depth = texImage->Depth;
+   const GLuint indexBits =
+      _mesa_get_format_bits(texImage->TexFormat, GL_TEXTURE_INDEX_SIZE_EXT);
+   const GLbitfield transferOps = 0x0;
+   GLint img, row, col;
+
+   for (img = 0; img < depth; img++) {
+      for (row = 0; row < height; row++) {
+         GLuint indexRow[MAX_WIDTH] = { 0 };
+         void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
+                                          width, height, format, type,
+                                          img, row, 0);
+         assert(dest);
+
+         if (indexBits == 8) {
+            const GLubyte *src = (const GLubyte *) texImage->Data;
+            src += width * (img * texImage->Height + row);
+            for (col = 0; col < width; col++) {
+               indexRow[col] = src[col];
+            }
+         }
+         else if (indexBits == 16) {
+            const GLushort *src = (const GLushort *) texImage->Data;
+            src += width * (img * texImage->Height + row);
+            for (col = 0; col < width; col++) {
+               indexRow[col] = src[col];
+            }
+         }
+         else {
+            _mesa_problem(ctx, "Color index problem in _mesa_GetTexImage");
+         }
+         _mesa_pack_index_span(ctx, width, type, dest,
+                               indexRow, &ctx->Pack, transferOps);
+      }
+   }
+}
+
+
+/**
+ * glGetTexImage for depth/Z pixels.
+ */
+static void
+get_tex_depth(struct gl_context *ctx, GLuint dimensions,
+              GLenum format, GLenum type, GLvoid *pixels,
+              const struct gl_texture_image *texImage)
+{
+   const GLint width = texImage->Width;
+   const GLint height = texImage->Height;
+   const GLint depth = texImage->Depth;
+   GLint img, row, col;
+   GLfloat *depthRow = (GLfloat *) malloc(width * sizeof(GLfloat));
+
+   if (!depthRow) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
+      return;
+   }
+
+   for (img = 0; img < depth; img++) {
+      for (row = 0; row < height; row++) {
+         void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
+                                          width, height, format, type,
+                                          img, row, 0);
+         assert(dest);
+
+         for (col = 0; col < width; col++) {
+            texImage->FetchTexelf(texImage, col, row, img, depthRow + col);
+         }
+         _mesa_pack_depth_span(ctx, width, dest, type, depthRow, &ctx->Pack);
+      }
+   }
+
+   free(depthRow);
+}
+
+
+/**
+ * glGetTexImage for depth/stencil pixels.
+ */
+static void
+get_tex_depth_stencil(struct gl_context *ctx, GLuint dimensions,
+                      GLenum format, GLenum type, GLvoid *pixels,
+                      const struct gl_texture_image *texImage)
+{
+   const GLint width = texImage->Width;
+   const GLint height = texImage->Height;
+   const GLint depth = texImage->Depth;
+   const GLuint *src = (const GLuint *) texImage->Data;
+   GLint img, row;
+
+   for (img = 0; img < depth; img++) {
+      for (row = 0; row < height; row++) {
+         void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
+                                          width, height, format, type,
+                                          img, row, 0);
+         memcpy(dest, src, width * sizeof(GLuint));
+         if (ctx->Pack.SwapBytes) {
+            _mesa_swap4((GLuint *) dest, width);
+         }
+
+         src += width * row + width * height * img;
+      }
+   }
+}
+
+
+/**
+ * glGetTexImage for YCbCr pixels.
+ */
+static void
+get_tex_ycbcr(struct gl_context *ctx, GLuint dimensions,
+              GLenum format, GLenum type, GLvoid *pixels,
+              const struct gl_texture_image *texImage)
+{
+   const GLint width = texImage->Width;
+   const GLint height = texImage->Height;
+   const GLint depth = texImage->Depth;
+   const GLint rowstride = texImage->RowStride;
+   const GLushort *src = (const GLushort *) texImage->Data;
+   GLint img, row;
+
+   for (img = 0; img < depth; img++) {
+      for (row = 0; row < height; row++) {
+         void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
+                                          width, height, format, type,
+                                          img, row, 0);
+         memcpy(dest, src, width * sizeof(GLushort));
+
+         /* check for byte swapping */
+         if ((texImage->TexFormat == MESA_FORMAT_YCBCR
+              && type == GL_UNSIGNED_SHORT_8_8_REV_MESA) ||
+             (texImage->TexFormat == MESA_FORMAT_YCBCR_REV
+              && type == GL_UNSIGNED_SHORT_8_8_MESA)) {
+            if (!ctx->Pack.SwapBytes)
+               _mesa_swap2((GLushort *) dest, width);
+         }
+         else if (ctx->Pack.SwapBytes) {
+            _mesa_swap2((GLushort *) dest, width);
+         }
+
+         src += rowstride;
+      }
+   }
+}
+
+
+#if FEATURE_EXT_texture_sRGB
+
+
+/**
+ * Convert a float value from linear space to a
+ * non-linear sRGB value in [0, 255].
+ * Not terribly efficient.
+ */
+static INLINE GLfloat
+linear_to_nonlinear(GLfloat cl)
+{
+   /* can't have values outside [0, 1] */
+   GLfloat cs;
+   if (cl < 0.0031308f) {
+      cs = 12.92f * cl;
+   }
+   else {
+      cs = (GLfloat)(1.055 * pow(cl, 0.41666) - 0.055);
+   }
+   return cs;
+}
+
+
+/**
+ * glGetTexImagefor sRGB pixels;
+ */
+static void
+get_tex_srgb(struct gl_context *ctx, GLuint dimensions,
+             GLenum format, GLenum type, GLvoid *pixels,
+             const struct gl_texture_image *texImage)
+{
+   const GLint width = texImage->Width;
+   const GLint height = texImage->Height;
+   const GLint depth = texImage->Depth;
+   const GLbitfield transferOps = 0x0;
+   GLint img, row;
+   GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));
+
+   if (!rgba) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
+      return;
+   }
+
+   for (img = 0; img < depth; img++) {
+      for (row = 0; row < height; row++) {
+         void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
+                                          width, height, format, type,
+                                          img, row, 0);
+
+         GLint col;
+
+         /* convert row to RGBA format */
+         for (col = 0; col < width; col++) {
+            texImage->FetchTexelf(texImage, col, row, img, rgba[col]);
+            if (texImage->_BaseFormat == GL_LUMINANCE) {
+               rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]);
+               rgba[col][GCOMP] = 0.0;
+               rgba[col][BCOMP] = 0.0;
+            }
+            else if (texImage->_BaseFormat == GL_LUMINANCE_ALPHA) {
+               rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]);
+               rgba[col][GCOMP] = 0.0;
+               rgba[col][BCOMP] = 0.0;
+            }
+            else if (texImage->_BaseFormat == GL_RGB ||
+                     texImage->_BaseFormat == GL_RGBA) {
+               rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]);
+               rgba[col][GCOMP] = linear_to_nonlinear(rgba[col][GCOMP]);
+               rgba[col][BCOMP] = linear_to_nonlinear(rgba[col][BCOMP]);
+            }
+         }
+         _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba,
+                                    format, type, dest,
+                                    &ctx->Pack, transferOps);
+      }
+   }
+
+   free(rgba);
+}
+
+
+#else /* FEATURE_EXT_texture_sRGB */
+
+
+static INLINE void
+get_tex_srgb(struct gl_context *ctx, GLuint dimensions,
+             GLenum format, GLenum type, GLvoid *pixels,
+             const struct gl_texture_image *texImage)
+{
+   ASSERT_NO_FEATURE();
+}
+
+
+#endif /* FEATURE_EXT_texture_sRGB */
+
+
+/**
+ * glGetTexImagefor RGBA, Luminance, etc. pixels.
+ * This is the slow way since we use texture sampling.
+ */
+static void
+get_tex_rgba(struct gl_context *ctx, GLuint dimensions,
+             GLenum format, GLenum type, GLvoid *pixels,
+             const struct gl_texture_image *texImage)
+{
+   const GLint width = texImage->Width;
+   const GLint height = texImage->Height;
+   const GLint depth = texImage->Depth;
+   /* Normally, no pixel transfer ops are performed during glGetTexImage.
+    * The only possible exception is component clamping to [0,1].
+    */
+   GLbitfield transferOps = 0x0;
+   GLint img, row;
+   GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));
+
+   if (!rgba) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
+      return;
+   }
+
+   for (img = 0; img < depth; img++) {
+      for (row = 0; row < height; row++) {
+         void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
+                                          width, height, format, type,
+                                          img, row, 0);
+         GLint col;
+         GLenum dataType = _mesa_get_format_datatype(texImage->TexFormat);
+
+         /* clamp does not apply to GetTexImage (final conversion)?
+          * Looks like we need clamp though when going from format
+          * containing negative values to unsigned format.
+          */
+         if (format == GL_LUMINANCE || format == GL_LUMINANCE_ALPHA) {
+            transferOps |= IMAGE_CLAMP_BIT;
+         }
+         else if (!type_with_negative_values(type) &&
+                  (dataType == GL_FLOAT ||
+                   dataType == GL_SIGNED_NORMALIZED)) {
+            transferOps |= IMAGE_CLAMP_BIT;
+         }
+
+         for (col = 0; col < width; col++) {
+            texImage->FetchTexelf(texImage, col, row, img, rgba[col]);
+            if (texImage->_BaseFormat == GL_ALPHA) {
+               rgba[col][RCOMP] = 0.0F;
+               rgba[col][GCOMP] = 0.0F;
+               rgba[col][BCOMP] = 0.0F;
+            }
+            else if (texImage->_BaseFormat == GL_LUMINANCE) {
+               rgba[col][GCOMP] = 0.0F;
+               rgba[col][BCOMP] = 0.0F;
+               rgba[col][ACOMP] = 1.0F;
+            }
+            else if (texImage->_BaseFormat == GL_LUMINANCE_ALPHA) {
+               rgba[col][GCOMP] = 0.0F;
+               rgba[col][BCOMP] = 0.0F;
+            }
+            else if (texImage->_BaseFormat == GL_INTENSITY) {
+               rgba[col][GCOMP] = 0.0F;
+               rgba[col][BCOMP] = 0.0F;
+               rgba[col][ACOMP] = 1.0F;
+            }
+         }
+         _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba,
+                                    format, type, dest,
+                                    &ctx->Pack, transferOps);
+      }
+   }
+
+   free(rgba);
+}
+
+
+/**
+ * Try to do glGetTexImage() with simple memcpy().
+ * \return GL_TRUE if done, GL_FALSE otherwise
+ */
+static GLboolean
+get_tex_memcpy(struct gl_context *ctx, GLenum format, GLenum type, GLvoid *pixels,
+               const struct gl_texture_object *texObj,
+               const struct gl_texture_image *texImage)
+{
+   GLboolean memCopy = GL_FALSE;
+
+   /* Texture image should have been mapped already */
+   assert(texImage->Data);
+
+   /*
+    * Check if the src/dst formats are compatible.
+    * Also note that GL's pixel transfer ops don't apply to glGetTexImage()
+    * so we don't have to worry about those.
+    * XXX more format combinations could be supported here.
+    */
+   if ((texObj->Target == GL_TEXTURE_1D ||
+        texObj->Target == GL_TEXTURE_2D ||
+        texObj->Target == GL_TEXTURE_RECTANGLE ||
+        (texObj->Target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X &&
+         texObj->Target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z))) {
+      if (texImage->TexFormat == MESA_FORMAT_ARGB8888 &&
+          format == GL_BGRA &&
+          type == GL_UNSIGNED_BYTE &&
+          !ctx->Pack.SwapBytes &&
+          _mesa_little_endian()) {
+         memCopy = GL_TRUE;
+      }
+      else if (texImage->TexFormat == MESA_FORMAT_AL88 &&
+               format == GL_LUMINANCE_ALPHA &&
+               type == GL_UNSIGNED_BYTE &&
+               !ctx->Pack.SwapBytes &&
+               _mesa_little_endian()) {
+         memCopy = GL_TRUE;
+      }
+      else if (texImage->TexFormat == MESA_FORMAT_L8 &&
+               format == GL_LUMINANCE &&
+               type == GL_UNSIGNED_BYTE) {
+         memCopy = GL_TRUE;
+      }
+      else if (texImage->TexFormat == MESA_FORMAT_L16 &&
+               format == GL_LUMINANCE &&
+               type == GL_UNSIGNED_SHORT) {
+         memCopy = GL_TRUE;
+      }
+      else if (texImage->TexFormat == MESA_FORMAT_A8 &&
+               format == GL_ALPHA &&
+               type == GL_UNSIGNED_BYTE) {
+         memCopy = GL_TRUE;
+      }
+      else if (texImage->TexFormat == MESA_FORMAT_A16 &&
+               format == GL_ALPHA &&
+               type == GL_UNSIGNED_SHORT) {
+         memCopy = GL_TRUE;
+      }
+   }
+
+   if (memCopy) {
+      const GLuint bpp = _mesa_get_format_bytes(texImage->TexFormat);
+      const GLuint bytesPerRow = texImage->Width * bpp;
+      GLubyte *dst =
+         _mesa_image_address2d(&ctx->Pack, pixels, texImage->Width,
+                               texImage->Height, format, type, 0, 0);
+      const GLint dstRowStride =
+         _mesa_image_row_stride(&ctx->Pack, texImage->Width, format, type);
+      const GLubyte *src = texImage->Data;
+      const GLint srcRowStride = texImage->RowStride * bpp;
+      GLuint row;
+
+      if (bytesPerRow == dstRowStride && bytesPerRow == srcRowStride) {
+         memcpy(dst, src, bytesPerRow * texImage->Height);
+      }
+      else {
+         for (row = 0; row < texImage->Height; row++) {
+            memcpy(dst, src, bytesPerRow);
+            dst += dstRowStride;
+            src += srcRowStride;
+         }
+      }
+   }
+
+   return memCopy;
+}
+
+
+/**
+ * This is the software fallback for Driver.GetTexImage().
+ * All error checking will have been done before this routine is called.
+ * The texture image must be mapped.
+ */
+void
+_mesa_get_teximage(struct gl_context *ctx, GLenum target, GLint level,
+                   GLenum format, GLenum type, GLvoid *pixels,
+                   struct gl_texture_object *texObj,
+                   struct gl_texture_image *texImage)
+{
+   GLuint dimensions;
+
+   /* If we get here, the texture image should be mapped */
+   assert(texImage->Data);
+
+   switch (target) {
+   case GL_TEXTURE_1D:
+      dimensions = 1;
+      break;
+   case GL_TEXTURE_3D:
+      dimensions = 3;
+      break;
+   default:
+      dimensions = 2;
+   }
+
+   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
+      /* Packing texture image into a PBO.
+       * Map the (potentially) VRAM-based buffer into our process space so
+       * we can write into it with the code below.
+       * A hardware driver might use a sophisticated blit to move the
+       * texture data to the PBO if the PBO is in VRAM along with the texture.
+       */
+      GLubyte *buf = (GLubyte *)
+         ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
+                               GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj);
+      if (!buf) {
+         /* out of memory or other unexpected error */
+         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage(map PBO failed)");
+         return;
+      }
+      /* <pixels> was an offset into the PBO.
+       * Now make it a real, client-side pointer inside the mapped region.
+       */
+      pixels = ADD_POINTERS(buf, pixels);
+   }
+
+   if (get_tex_memcpy(ctx, format, type, pixels, texObj, texImage)) {
+      /* all done */
+   }
+   else if (format == GL_COLOR_INDEX) {
+      get_tex_color_index(ctx, dimensions, format, type, pixels, texImage);
+   }
+   else if (format == GL_DEPTH_COMPONENT) {
+      get_tex_depth(ctx, dimensions, format, type, pixels, texImage);
+   }
+   else if (format == GL_DEPTH_STENCIL_EXT) {
+      get_tex_depth_stencil(ctx, dimensions, format, type, pixels, texImage);
+   }
+   else if (format == GL_YCBCR_MESA) {
+      get_tex_ycbcr(ctx, dimensions, format, type, pixels, texImage);
+   }
+   else if (_mesa_get_format_color_encoding(texImage->TexFormat) == GL_SRGB) {
+      get_tex_srgb(ctx, dimensions, format, type, pixels, texImage);
+   }
+   else {
+      get_tex_rgba(ctx, dimensions, format, type, pixels, texImage);
+   }
+
+   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
+      ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
+                              ctx->Pack.BufferObj);
+   }
+}
+
+
+
+/**
+ * This is the software fallback for Driver.GetCompressedTexImage().
+ * All error checking will have been done before this routine is called.
+ */
+void
+_mesa_get_compressed_teximage(struct gl_context *ctx, GLenum target, GLint level,
+                              GLvoid *img,
+                              struct gl_texture_object *texObj,
+                              struct gl_texture_image *texImage)
+{
+   const GLuint row_stride = _mesa_format_row_stride(texImage->TexFormat,
+                                                     texImage->Width);
+   const GLuint row_stride_stored = _mesa_format_row_stride(texImage->TexFormat,
+                                                            texImage->RowStride);
+   GLuint i;
+
+   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
+      /* pack texture image into a PBO */
+      GLubyte *buf = (GLubyte *)
+         ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
+                               GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj);
+      if (!buf) {
+         /* out of memory or other unexpected error */
+         _mesa_error(ctx, GL_OUT_OF_MEMORY,
+                     "glGetCompresssedTexImage(map PBO failed)");
+         return;
+      }
+      img = ADD_POINTERS(buf, img);
+   }
+
+   /* no pixelstore or pixel transfer, but respect stride */
+
+   if (row_stride == row_stride_stored) {
+      const GLuint size = _mesa_format_image_size(texImage->TexFormat,
+                                                  texImage->Width,
+                                                  texImage->Height,
+                                                  texImage->Depth);
+      memcpy(img, texImage->Data, size);
+   }
+   else {
+      GLuint bw, bh;
+      _mesa_get_format_block_size(texImage->TexFormat, &bw, &bh);
+      for (i = 0; i < (texImage->Height + bh - 1) / bh; i++) {
+         memcpy((GLubyte *)img + i * row_stride,
+                (GLubyte *)texImage->Data + i * row_stride_stored,
+                row_stride);
+      }
+   }
+
+   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
+      ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
+                              ctx->Pack.BufferObj);
+   }
+}
+
+
+
+/**
+ * Do error checking for a glGetTexImage() call.
+ * \return GL_TRUE if any error, GL_FALSE if no errors.
+ */
+static GLboolean
+getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level,
+                        GLenum format, GLenum type, GLvoid *pixels )
+{
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+   const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
+   GLenum baseFormat;
+
+   if (maxLevels == 0) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target=0x%x)", target);
+      return GL_TRUE;
+   }
+
+   if (level < 0 || level >= maxLevels) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexImage(level)" );
+      return GL_TRUE;
+   }
+
+   if (_mesa_sizeof_packed_type(type) <= 0) {
+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexImage(type)" );
+      return GL_TRUE;
+   }
+
+   if (_mesa_components_in_format(format) <= 0 ||
+       format == GL_STENCIL_INDEX) {
+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexImage(format)" );
+      return GL_TRUE;
+   }
+
+   if (!ctx->Extensions.EXT_paletted_texture && _mesa_is_index_format(format)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
+      return GL_TRUE;
+   }
+
+   if (!ctx->Extensions.ARB_depth_texture && _mesa_is_depth_format(format)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
+      return GL_TRUE;
+   }
+
+   if (!ctx->Extensions.MESA_ycbcr_texture && _mesa_is_ycbcr_format(format)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
+      return GL_TRUE;
+   }
+
+   if (!ctx->Extensions.EXT_packed_depth_stencil
+       && _mesa_is_depthstencil_format(format)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
+      return GL_TRUE;
+   }
+
+   if (!ctx->Extensions.ATI_envmap_bumpmap
+       && _mesa_is_dudv_format(format)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
+      return GL_TRUE;
+   }
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+
+   if (!texObj || _mesa_is_proxy_texture(target)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target)");
+      return GL_TRUE;
+   }
+
+   texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+   if (!texImage) {
+      /* out of memory */
+      return GL_TRUE;
+   }
+
+   baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
+      
+   /* Make sure the requested image format is compatible with the
+    * texture's format.  Note that a color index texture can be converted
+    * to RGBA so that combo is allowed.
+    */
+   if (_mesa_is_color_format(format)
+       && !_mesa_is_color_format(baseFormat)
+       && !_mesa_is_index_format(baseFormat)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
+      return GL_TRUE;
+   }
+   else if (_mesa_is_index_format(format)
+            && !_mesa_is_index_format(baseFormat)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
+      return GL_TRUE;
+   }
+   else if (_mesa_is_depth_format(format)
+            && !_mesa_is_depth_format(baseFormat)
+            && !_mesa_is_depthstencil_format(baseFormat)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
+      return GL_TRUE;
+   }
+   else if (_mesa_is_ycbcr_format(format)
+            && !_mesa_is_ycbcr_format(baseFormat)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
+      return GL_TRUE;
+   }
+   else if (_mesa_is_depthstencil_format(format)
+            && !_mesa_is_depthstencil_format(baseFormat)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
+      return GL_TRUE;
+   }
+   else if (_mesa_is_dudv_format(format)
+            && !_mesa_is_dudv_format(baseFormat)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
+      return GL_TRUE;
+   }
+
+   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
+      /* packing texture image into a PBO */
+      const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2;
+      if (!_mesa_validate_pbo_access(dimensions, &ctx->Pack, texImage->Width,
+                                     texImage->Height, texImage->Depth,
+                                     format, type, pixels)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glGetTexImage(out of bounds PBO write)");
+         return GL_TRUE;
+      }
+
+      /* PBO should not be mapped */
+      if (_mesa_bufferobj_mapped(ctx->Pack.BufferObj)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glGetTexImage(PBO is mapped)");
+         return GL_TRUE;
+      }
+   }
+
+   return GL_FALSE;
+}
+
+
+
+/**
+ * Get texture image.  Called by glGetTexImage.
+ *
+ * \param target texture target.
+ * \param level image level.
+ * \param format pixel data format for returned image.
+ * \param type pixel data type for returned image.
+ * \param pixels returned pixel data.
+ */
+void GLAPIENTRY
+_mesa_GetTexImage( GLenum target, GLint level, GLenum format,
+                   GLenum type, GLvoid *pixels )
+{
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (getteximage_error_check(ctx, target, level, format, type, pixels)) {
+      return;
+   }
+
+   if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) {
+      /* not an error, do nothing */
+      return;
+   }
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+   texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+
+   if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) {
+      _mesa_debug(ctx, "glGetTexImage(tex %u) format = %s, w=%d, h=%d,"
+                  " dstFmt=0x%x, dstType=0x%x\n",
+                  texObj->Name,
+                  _mesa_get_format_name(texImage->TexFormat),
+                  texImage->Width, texImage->Height,
+                  format, type);
+   }
+
+   _mesa_lock_texture(ctx, texObj);
+   {
+      ctx->Driver.GetTexImage(ctx, target, level, format, type, pixels,
+                              texObj, texImage);
+   }
+   _mesa_unlock_texture(ctx, texObj);
+}
+
+
+
+/**
+ * Do error checking for a glGetCompressedTexImage() call.
+ * \return GL_TRUE if any error, GL_FALSE if no errors.
+ */
+static GLboolean
+getcompressedteximage_error_check(struct gl_context *ctx, GLenum target,
+                                  GLint level, GLvoid *img)
+{
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+   const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
+
+   if (maxLevels == 0) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImage(target=0x%x)",
+                  target);
+      return GL_TRUE;
+   }
+
+   if (level < 0 || level >= maxLevels) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glGetCompressedTexImageARB(bad level = %d)", level);
+      return GL_TRUE;
+   }
+
+   if (_mesa_is_proxy_texture(target)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetCompressedTexImageARB(bad target = %s)",
+                  _mesa_lookup_enum_by_nr(target));
+      return GL_TRUE;
+   }
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+   if (!texObj) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImageARB(target)");
+      return GL_TRUE;
+   }
+
+   texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+
+   if (!texImage) {
+      /* probably invalid mipmap level */
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glGetCompressedTexImageARB(level)");
+      return GL_TRUE;
+   }
+
+   if (!_mesa_is_format_compressed(texImage->TexFormat)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glGetCompressedTexImageARB(texture is not compressed)");
+      return GL_TRUE;
+   }
+
+   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
+      GLuint compressedSize;
+
+      /* make sure PBO is not mapped */
+      if (_mesa_bufferobj_mapped(ctx->Pack.BufferObj)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glGetCompressedTexImage(PBO is mapped)");
+         return GL_TRUE;
+      }
+
+      compressedSize = _mesa_format_image_size(texImage->TexFormat,
+                                               texImage->Width,
+                                               texImage->Height,
+                                               texImage->Depth);
+
+      /* do bounds checking on PBO write */
+      if ((const GLubyte *) img + compressedSize >
+          (const GLubyte *) ctx->Pack.BufferObj->Size) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glGetCompressedTexImage(out of bounds PBO write)");
+         return GL_TRUE;
+      }
+   }
+
+   return GL_FALSE;
+}
+
+
+void GLAPIENTRY
+_mesa_GetCompressedTexImageARB(GLenum target, GLint level, GLvoid *img)
+{
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (getcompressedteximage_error_check(ctx, target, level, img)) {
+      return;
+   }
+
+   if (_mesa_is_bufferobj(ctx->Pack.BufferObj) && !img) {
+      /* not an error, do nothing */
+      return;
+   }
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+   texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+
+   if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) {
+      _mesa_debug(ctx,
+                  "glGetCompressedTexImage(tex %u) format = %s, w=%d, h=%d\n",
+                  texObj->Name,
+                  _mesa_get_format_name(texImage->TexFormat),
+                  texImage->Width, texImage->Height);
+   }
+
+   _mesa_lock_texture(ctx, texObj);
+   {
+      ctx->Driver.GetCompressedTexImage(ctx, target, level, img,
+                                        texObj, texImage);
+   }
+   _mesa_unlock_texture(ctx, texObj);
+}
diff --git a/mesalib/src/mesa/main/teximage.c b/mesalib/src/mesa/main/teximage.c
index ddad16a8e..d4ae6dd69 100644
--- a/mesalib/src/mesa/main/teximage.c
+++ b/mesalib/src/mesa/main/teximage.c
@@ -1,3500 +1,3504 @@
-/*

- * mesa 3-D graphics library

- * Version:  7.6

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-/**

- * \file teximage.c

- * Texture image-related functions.

- */

-

-

-#include "glheader.h"

-#include "bufferobj.h"

-#include "context.h"

-#include "enums.h"

-#include "fbobject.h"

-#include "framebuffer.h"

-#include "hash.h"

-#include "image.h"

-#include "imports.h"

-#include "macros.h"

-#include "mfeatures.h"

-#include "state.h"

-#include "texcompress.h"

-#include "texfetch.h"

-#include "teximage.h"

-#include "texstate.h"

-#include "texpal.h"

-#include "mtypes.h"

-

-

-/**

- * State changes which we care about for glCopyTex[Sub]Image() calls.

- * In particular, we care about pixel transfer state and buffer state

- * (such as glReadBuffer to make sure we read from the right renderbuffer).

- */

-#define NEW_COPY_TEX_STATE (_MESA_NEW_TRANSFER_STATE | \

-                            _NEW_BUFFERS | \

-                            _NEW_PIXEL)

-

-

-

-/**

- * We allocate texture memory on 512-byte boundaries so we can use MMX/SSE

- * elsewhere.

- */

-void *

-_mesa_alloc_texmemory(GLsizei bytes)

-{

-   return _mesa_align_malloc(bytes, 512);

-}

-

-

-/**

- * Free texture memory allocated with _mesa_alloc_texmemory()

- */

-void

-_mesa_free_texmemory(void *m)

-{

-   _mesa_align_free(m);

-}

-

-

-/*

- * Compute floor(log_base_2(n)).

- * If n < 0 return -1.

- */

-static int

-logbase2( int n )

-{

-   GLint i = 1;

-   GLint log2 = 0;

-

-   if (n < 0)

-      return -1;

-

-   if (n == 0)

-      return 0;

-

-   while ( n > i ) {

-      i *= 2;

-      log2++;

-   }

-   if (i != n) {

-      return log2 - 1;

-   }

-   else {

-      return log2;

-   }

-}

-

-

-

-/**

- * Return the simple base format for a given internal texture format.

- * For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA.

- *

- * \param ctx GL context.

- * \param internalFormat the internal texture format token or 1, 2, 3, or 4.

- *

- * \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE,

- * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum.

- *

- * This is the format which is used during texture application (i.e. the

- * texture format and env mode determine the arithmetic used.

- *

- * XXX this could be static

- */

-GLint

-_mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat )

-{

-   switch (internalFormat) {

-      case GL_ALPHA:

-      case GL_ALPHA4:

-      case GL_ALPHA8:

-      case GL_ALPHA12:

-      case GL_ALPHA16:

-         return GL_ALPHA;

-      case 1:

-      case GL_LUMINANCE:

-      case GL_LUMINANCE4:

-      case GL_LUMINANCE8:

-      case GL_LUMINANCE12:

-      case GL_LUMINANCE16:

-         return GL_LUMINANCE;

-      case 2:

-      case GL_LUMINANCE_ALPHA:

-      case GL_LUMINANCE4_ALPHA4:

-      case GL_LUMINANCE6_ALPHA2:

-      case GL_LUMINANCE8_ALPHA8:

-      case GL_LUMINANCE12_ALPHA4:

-      case GL_LUMINANCE12_ALPHA12:

-      case GL_LUMINANCE16_ALPHA16:

-         return GL_LUMINANCE_ALPHA;

-      case GL_INTENSITY:

-      case GL_INTENSITY4:

-      case GL_INTENSITY8:

-      case GL_INTENSITY12:

-      case GL_INTENSITY16:

-         return GL_INTENSITY;

-      case 3:

-      case GL_RGB:

-      case GL_R3_G3_B2:

-      case GL_RGB4:

-      case GL_RGB5:

-      case GL_RGB8:

-      case GL_RGB10:

-      case GL_RGB12:

-      case GL_RGB16:

-         return GL_RGB;

-      case 4:

-      case GL_RGBA:

-      case GL_RGBA2:

-      case GL_RGBA4:

-      case GL_RGB5_A1:

-      case GL_RGBA8:

-      case GL_RGB10_A2:

-      case GL_RGBA12:

-      case GL_RGBA16:

-         return GL_RGBA;

-      default:

-         ; /* fallthrough */

-   }

-

-   if (ctx->Extensions.EXT_texture_format_BGRA8888) {

-      switch (internalFormat) {

-         case GL_BGRA_EXT:

-            return GL_RGBA;

-         default:

-            ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.EXT_paletted_texture) {

-      switch (internalFormat) {

-         case GL_COLOR_INDEX:

-         case GL_COLOR_INDEX1_EXT:

-         case GL_COLOR_INDEX2_EXT:

-         case GL_COLOR_INDEX4_EXT:

-         case GL_COLOR_INDEX8_EXT:

-         case GL_COLOR_INDEX12_EXT:

-         case GL_COLOR_INDEX16_EXT:

-            return GL_COLOR_INDEX;

-         default:

-            ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.ARB_depth_texture) {

-      switch (internalFormat) {

-         case GL_DEPTH_COMPONENT:

-         case GL_DEPTH_COMPONENT16:

-         case GL_DEPTH_COMPONENT24:

-         case GL_DEPTH_COMPONENT32:

-            return GL_DEPTH_COMPONENT;

-         default:

-            ; /* fallthrough */

-      }

-   }

-

-   switch (internalFormat) {

-   case GL_COMPRESSED_ALPHA:

-      return GL_ALPHA;

-   case GL_COMPRESSED_LUMINANCE:

-      return GL_LUMINANCE;

-   case GL_COMPRESSED_LUMINANCE_ALPHA:

-      return GL_LUMINANCE_ALPHA;

-   case GL_COMPRESSED_INTENSITY:

-      return GL_INTENSITY;

-   case GL_COMPRESSED_RGB:

-      return GL_RGB;

-   case GL_COMPRESSED_RGBA:

-      return GL_RGBA;

-   default:

-      ; /* fallthrough */

-   }

-         

-   if (ctx->Extensions.TDFX_texture_compression_FXT1) {

-      switch (internalFormat) {

-         case GL_COMPRESSED_RGB_FXT1_3DFX:

-            return GL_RGB;

-         case GL_COMPRESSED_RGBA_FXT1_3DFX:

-            return GL_RGBA;

-         default:

-            ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.EXT_texture_compression_s3tc) {

-      switch (internalFormat) {

-         case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:

-            return GL_RGB;

-         case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:

-         case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:

-         case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:

-            return GL_RGBA;

-         default:

-            ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.S3_s3tc) {

-      switch (internalFormat) {

-         case GL_RGB_S3TC:

-         case GL_RGB4_S3TC:

-            return GL_RGB;

-         case GL_RGBA_S3TC:

-         case GL_RGBA4_S3TC:

-            return GL_RGBA;

-         default:

-            ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.MESA_ycbcr_texture) {

-      if (internalFormat == GL_YCBCR_MESA)

-         return GL_YCBCR_MESA;

-   }

-

-   if (ctx->Extensions.ARB_texture_float) {

-      switch (internalFormat) {

-         case GL_ALPHA16F_ARB:

-         case GL_ALPHA32F_ARB:

-            return GL_ALPHA;

-         case GL_RGBA16F_ARB:

-         case GL_RGBA32F_ARB:

-            return GL_RGBA;

-         case GL_RGB16F_ARB:

-         case GL_RGB32F_ARB:

-            return GL_RGB;

-         case GL_INTENSITY16F_ARB:

-         case GL_INTENSITY32F_ARB:

-            return GL_INTENSITY;

-         case GL_LUMINANCE16F_ARB:

-         case GL_LUMINANCE32F_ARB:

-            return GL_LUMINANCE;

-         case GL_LUMINANCE_ALPHA16F_ARB:

-         case GL_LUMINANCE_ALPHA32F_ARB:

-            return GL_LUMINANCE_ALPHA;

-         default:

-            ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.ATI_envmap_bumpmap) {

-      switch (internalFormat) {

-         case GL_DUDV_ATI:

-         case GL_DU8DV8_ATI:

-            return GL_DUDV_ATI;

-         default:

-            ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.MESA_texture_signed_rgba) {

-      switch (internalFormat) {

-         case GL_RGBA_SNORM:

-         case GL_RGBA8_SNORM:

-            return GL_RGBA;

-         default:

-            ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.EXT_packed_depth_stencil) {

-      switch (internalFormat) {

-         case GL_DEPTH_STENCIL_EXT:

-         case GL_DEPTH24_STENCIL8_EXT:

-            return GL_DEPTH_STENCIL_EXT;

-         default:

-            ; /* fallthrough */

-      }

-   }

-

-#if FEATURE_EXT_texture_sRGB

-   if (ctx->Extensions.EXT_texture_sRGB) {

-      switch (internalFormat) {

-      case GL_SRGB_EXT:

-      case GL_SRGB8_EXT:

-      case GL_COMPRESSED_SRGB_EXT:

-      case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:

-         return GL_RGB;

-      case GL_SRGB_ALPHA_EXT:

-      case GL_SRGB8_ALPHA8_EXT:

-      case GL_COMPRESSED_SRGB_ALPHA_EXT:

-      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:

-      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:

-      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:

-         return GL_RGBA;

-      case GL_SLUMINANCE_ALPHA_EXT:

-      case GL_SLUMINANCE8_ALPHA8_EXT:

-      case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:

-         return GL_LUMINANCE_ALPHA;

-      case GL_SLUMINANCE_EXT:

-      case GL_SLUMINANCE8_EXT:

-      case GL_COMPRESSED_SLUMINANCE_EXT:

-         return GL_LUMINANCE;

-      default:

-         ; /* fallthrough */

-      }

-   }

-#endif /* FEATURE_EXT_texture_sRGB */

-

-   if (ctx->Extensions.EXT_texture_integer) {

-      switch (internalFormat) {

-      case GL_RGBA8UI_EXT:

-      case GL_RGBA16UI_EXT:

-      case GL_RGBA32UI_EXT:

-      case GL_RGBA8I_EXT:

-      case GL_RGBA16I_EXT:

-      case GL_RGBA32I_EXT:

-         return GL_RGBA;

-      case GL_RGB8UI_EXT:

-      case GL_RGB16UI_EXT:

-      case GL_RGB32UI_EXT:

-      case GL_RGB8I_EXT:

-      case GL_RGB16I_EXT:

-      case GL_RGB32I_EXT:

-         return GL_RGB;

-      case GL_ALPHA8UI_EXT:

-      case GL_ALPHA16UI_EXT:

-      case GL_ALPHA32UI_EXT:

-      case GL_ALPHA8I_EXT:

-      case GL_ALPHA16I_EXT:

-      case GL_ALPHA32I_EXT:

-         return GL_ALPHA;

-      case GL_INTENSITY8UI_EXT:

-      case GL_INTENSITY16UI_EXT:

-      case GL_INTENSITY32UI_EXT:

-      case GL_INTENSITY8I_EXT:

-      case GL_INTENSITY16I_EXT:

-      case GL_INTENSITY32I_EXT:

-         return GL_INTENSITY;

-      case GL_LUMINANCE8UI_EXT:

-      case GL_LUMINANCE16UI_EXT:

-      case GL_LUMINANCE32UI_EXT:

-      case GL_LUMINANCE8I_EXT:

-      case GL_LUMINANCE16I_EXT:

-      case GL_LUMINANCE32I_EXT:

-         return GL_LUMINANCE;

-      case GL_LUMINANCE_ALPHA8UI_EXT:

-      case GL_LUMINANCE_ALPHA16UI_EXT:

-      case GL_LUMINANCE_ALPHA32UI_EXT:

-      case GL_LUMINANCE_ALPHA8I_EXT:

-      case GL_LUMINANCE_ALPHA16I_EXT:

-      case GL_LUMINANCE_ALPHA32I_EXT:

-         return GL_LUMINANCE_ALPHA;

-      default:

-         ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.ARB_texture_rg) {

-      switch (internalFormat) {

-      case GL_R16F:

-	 /* R16F depends on both ARB_half_float_pixel and ARB_texture_float.

-	  */

-	 if (!ctx->Extensions.ARB_half_float_pixel)

-	    break;

-	 /* FALLTHROUGH */

-      case GL_R32F:

-	 if (!ctx->Extensions.ARB_texture_float)

-	    break;

-         return GL_RED;

-      case GL_R8I:

-      case GL_R8UI:

-      case GL_R16I:

-      case GL_R16UI:

-      case GL_R32I:

-      case GL_R32UI:

-	 if (!ctx->Extensions.EXT_texture_integer)

-	    break;

-	 /* FALLTHROUGH */

-      case GL_R8:

-      case GL_R16:

-      case GL_RED:

-      case GL_COMPRESSED_RED:

-         return GL_RED;

-

-      case GL_RG16F:

-	 /* RG16F depends on both ARB_half_float_pixel and ARB_texture_float.

-	  */

-	 if (!ctx->Extensions.ARB_half_float_pixel)

-	    break;

-	 /* FALLTHROUGH */

-      case GL_RG32F:

-	 if (!ctx->Extensions.ARB_texture_float)

-	    break;

-         return GL_RG;

-      case GL_RG8I:

-      case GL_RG8UI:

-      case GL_RG16I:

-      case GL_RG16UI:

-      case GL_RG32I:

-      case GL_RG32UI:

-	 if (!ctx->Extensions.EXT_texture_integer)

-	    break;

-	 /* FALLTHROUGH */

-      case GL_RG:

-      case GL_RG8:

-      case GL_RG16:

-      case GL_COMPRESSED_RG:

-         return GL_RG;

-      default:

-         ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.EXT_texture_shared_exponent) {

-      switch (internalFormat) {

-      case GL_RGB9_E5_EXT:

-         return GL_RGB;

-      default:

-         ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.EXT_packed_float) {

-      switch (internalFormat) {

-      case GL_R11F_G11F_B10F_EXT:

-         return GL_RGB;

-      default:

-         ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.ARB_depth_buffer_float) {

-      switch (internalFormat) {

-      case GL_DEPTH_COMPONENT32F:

-         return GL_DEPTH_COMPONENT;

-      case GL_DEPTH32F_STENCIL8:

-         return GL_DEPTH_STENCIL;

-      default:

-         ; /* fallthrough */

-      }

-   }

-

-   if (ctx->Extensions.ARB_texture_compression_rgtc) {

-      switch (internalFormat) {

-      case GL_COMPRESSED_RED_RGTC1:

-      case GL_COMPRESSED_SIGNED_RED_RGTC1:

-         return GL_RED;

-      case GL_COMPRESSED_RG_RGTC2:

-      case GL_COMPRESSED_SIGNED_RG_RGTC2:

-         return GL_RG;

-      default:

-         ; /* fallthrough */

-      }

-   }

-

-   return -1; /* error */

-}

-

-

-/**

- * For cube map faces, return a face index in [0,5].

- * For other targets return 0;

- */

-GLuint

-_mesa_tex_target_to_face(GLenum target)

-{

-   if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&

-       target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB)

-      return (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X;

-   else

-      return 0;

-}

-

-

-

-/**

- * Store a gl_texture_image pointer in a gl_texture_object structure

- * according to the target and level parameters.

- * 

- * \param tObj texture object.

- * \param target texture target.

- * \param level image level.

- * \param texImage texture image.

- * 

- * This was basically prompted by the introduction of cube maps.

- */

-void

-_mesa_set_tex_image(struct gl_texture_object *tObj,

-                    GLenum target, GLint level,

-                    struct gl_texture_image *texImage)

-{

-   const GLuint face = _mesa_tex_target_to_face(target);

-

-   ASSERT(tObj);

-   ASSERT(texImage);

-   ASSERT(target != GL_TEXTURE_RECTANGLE_NV || level == 0);

-

-   tObj->Image[face][level] = texImage;

-

-   /* Set the 'back' pointer */

-   texImage->TexObject = tObj;

-}

-

-

-/**

- * Allocate a texture image structure.

- * 

- * Called via ctx->Driver.NewTextureImage() unless overriden by a device

- * driver.

- *

- * \return a pointer to gl_texture_image struct with all fields initialized to

- * zero.

- */

-struct gl_texture_image *

-_mesa_new_texture_image( struct gl_context *ctx )

-{

-   (void) ctx;

-   return CALLOC_STRUCT(gl_texture_image);

-}

-

-

-/**

- * Free texture image data.

- * This function is a fallback called via ctx->Driver.FreeTexImageData().

- *

- * \param texImage texture image.

- *

- * Free the texture image data if it's not marked as client data.

- */

-void

-_mesa_free_texture_image_data(struct gl_context *ctx,

-                              struct gl_texture_image *texImage)

-{

-   (void) ctx;

-

-   if (texImage->Data && !texImage->IsClientData) {

-      /* free the old texture data */

-      _mesa_free_texmemory(texImage->Data);

-   }

-

-   texImage->Data = NULL;

-}

-

-

-/**

- * Free texture image.

- *

- * \param texImage texture image.

- *

- * Free the texture image structure and the associated image data.

- */

-void

-_mesa_delete_texture_image(struct gl_context *ctx,

-                           struct gl_texture_image *texImage)

-{

-   /* Free texImage->Data and/or any other driver-specific texture

-    * image storage.

-    */

-   ASSERT(ctx->Driver.FreeTexImageData);

-   ctx->Driver.FreeTexImageData( ctx, texImage );

-

-   ASSERT(texImage->Data == NULL);

-   if (texImage->ImageOffsets)

-      free(texImage->ImageOffsets);

-   free(texImage);

-}

-

-

-/**

- * Test if a target is a proxy target.

- *

- * \param target texture target.

- *

- * \return GL_TRUE if the target is a proxy target, GL_FALSE otherwise.

- */

-GLboolean

-_mesa_is_proxy_texture(GLenum target)

-{

-   /* NUM_TEXTURE_TARGETS should match number of terms below */

-   assert(NUM_TEXTURE_TARGETS == 7);

-

-   return (target == GL_PROXY_TEXTURE_1D ||

-           target == GL_PROXY_TEXTURE_2D ||

-           target == GL_PROXY_TEXTURE_3D ||

-           target == GL_PROXY_TEXTURE_CUBE_MAP_ARB ||

-           target == GL_PROXY_TEXTURE_RECTANGLE_NV ||

-           target == GL_PROXY_TEXTURE_1D_ARRAY_EXT ||

-           target == GL_PROXY_TEXTURE_2D_ARRAY_EXT);

-}

-

-

-/**

- * Return the proxy target which corresponds to the given texture target

- */

-static GLenum

-get_proxy_target(GLenum target)

-{

-   switch (target) {

-   case GL_TEXTURE_1D:

-   case GL_PROXY_TEXTURE_1D:

-      return GL_PROXY_TEXTURE_1D;

-   case GL_TEXTURE_2D:

-   case GL_PROXY_TEXTURE_2D:

-      return GL_PROXY_TEXTURE_2D;

-   case GL_TEXTURE_3D:

-   case GL_PROXY_TEXTURE_3D:

-      return GL_PROXY_TEXTURE_3D;

-   case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:

-   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:

-   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:

-   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:

-   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:

-   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:

-   case GL_TEXTURE_CUBE_MAP_ARB:

-   case GL_PROXY_TEXTURE_CUBE_MAP_ARB:

-      return GL_PROXY_TEXTURE_CUBE_MAP_ARB;

-   case GL_TEXTURE_RECTANGLE_NV:

-   case GL_PROXY_TEXTURE_RECTANGLE_NV:

-      return GL_PROXY_TEXTURE_RECTANGLE_NV;

-   case GL_TEXTURE_1D_ARRAY_EXT:

-   case GL_PROXY_TEXTURE_1D_ARRAY_EXT:

-      return GL_PROXY_TEXTURE_1D_ARRAY_EXT;

-   case GL_TEXTURE_2D_ARRAY_EXT:

-   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:

-      return GL_PROXY_TEXTURE_2D_ARRAY_EXT;

-   default:

-      _mesa_problem(NULL, "unexpected target in get_proxy_target()");

-      return 0;

-   }

-}

-

-

-/**

- * Get the texture object that corresponds to the target of the given

- * texture unit.

- *

- * \param ctx GL context.

- * \param texUnit texture unit.

- * \param target texture target.

- *

- * \return pointer to the texture object on success, or NULL on failure.

- * 

- * \sa gl_texture_unit.

- */

-struct gl_texture_object *

-_mesa_select_tex_object(struct gl_context *ctx,

-                        const struct gl_texture_unit *texUnit,

-                        GLenum target)

-{

-   const GLboolean arrayTex = (ctx->Extensions.MESA_texture_array ||

-                               ctx->Extensions.EXT_texture_array);

-

-   switch (target) {

-      case GL_TEXTURE_1D:

-         return texUnit->CurrentTex[TEXTURE_1D_INDEX];

-      case GL_PROXY_TEXTURE_1D:

-         return ctx->Texture.ProxyTex[TEXTURE_1D_INDEX];

-      case GL_TEXTURE_2D:

-         return texUnit->CurrentTex[TEXTURE_2D_INDEX];

-      case GL_PROXY_TEXTURE_2D:

-         return ctx->Texture.ProxyTex[TEXTURE_2D_INDEX];

-      case GL_TEXTURE_3D:

-         return texUnit->CurrentTex[TEXTURE_3D_INDEX];

-      case GL_PROXY_TEXTURE_3D:

-         return ctx->Texture.ProxyTex[TEXTURE_3D_INDEX];

-      case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:

-      case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:

-      case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:

-      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:

-      case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:

-      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:

-      case GL_TEXTURE_CUBE_MAP_ARB:

-         return ctx->Extensions.ARB_texture_cube_map

-                ? texUnit->CurrentTex[TEXTURE_CUBE_INDEX] : NULL;

-      case GL_PROXY_TEXTURE_CUBE_MAP_ARB:

-         return ctx->Extensions.ARB_texture_cube_map

-                ? ctx->Texture.ProxyTex[TEXTURE_CUBE_INDEX] : NULL;

-      case GL_TEXTURE_RECTANGLE_NV:

-         return ctx->Extensions.NV_texture_rectangle

-                ? texUnit->CurrentTex[TEXTURE_RECT_INDEX] : NULL;

-      case GL_PROXY_TEXTURE_RECTANGLE_NV:

-         return ctx->Extensions.NV_texture_rectangle

-                ? ctx->Texture.ProxyTex[TEXTURE_RECT_INDEX] : NULL;

-      case GL_TEXTURE_1D_ARRAY_EXT:

-         return arrayTex ? texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX] : NULL;

-      case GL_PROXY_TEXTURE_1D_ARRAY_EXT:

-         return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_1D_ARRAY_INDEX] : NULL;

-      case GL_TEXTURE_2D_ARRAY_EXT:

-         return arrayTex ? texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX] : NULL;

-      case GL_PROXY_TEXTURE_2D_ARRAY_EXT:

-         return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_2D_ARRAY_INDEX] : NULL;

-      default:

-         _mesa_problem(NULL, "bad target in _mesa_select_tex_object()");

-         return NULL;

-   }

-}

-

-

-/**

- * Return pointer to texture object for given target on current texture unit.

- */

-struct gl_texture_object *

-_mesa_get_current_tex_object(struct gl_context *ctx, GLenum target)

-{

-   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);

-   return _mesa_select_tex_object(ctx, texUnit, target);

-}

-

-

-/**

- * Get a texture image pointer from a texture object, given a texture

- * target and mipmap level.  The target and level parameters should

- * have already been error-checked.

- *

- * \param ctx GL context.

- * \param texObj texture unit.

- * \param target texture target.

- * \param level image level.

- *

- * \return pointer to the texture image structure, or NULL on failure.

- */

-struct gl_texture_image *

-_mesa_select_tex_image(struct gl_context *ctx,

-                       const struct gl_texture_object *texObj,

-		       GLenum target, GLint level)

-{

-   const GLuint face = _mesa_tex_target_to_face(target);

-

-   ASSERT(texObj);

-   ASSERT(level >= 0);

-   ASSERT(level < MAX_TEXTURE_LEVELS);

-

-   return texObj->Image[face][level];

-}

-

-

-/**

- * Like _mesa_select_tex_image() but if the image doesn't exist, allocate

- * it and install it.  Only return NULL if passed a bad parameter or run

- * out of memory.

- */

-struct gl_texture_image *

-_mesa_get_tex_image(struct gl_context *ctx, struct gl_texture_object *texObj,

-                    GLenum target, GLint level)

-{

-   struct gl_texture_image *texImage;

-

-   if (!texObj)

-      return NULL;

-   

-   texImage = _mesa_select_tex_image(ctx, texObj, target, level);

-   if (!texImage) {

-      texImage = ctx->Driver.NewTextureImage(ctx);

-      if (!texImage) {

-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture image allocation");

-         return NULL;

-      }

-

-      _mesa_set_tex_image(texObj, target, level, texImage);

-   }

-

-   return texImage;

-}

-

-

-/**

- * Return pointer to the specified proxy texture image.

- * Note that proxy textures are per-context, not per-texture unit.

- * \return pointer to texture image or NULL if invalid target, invalid

- *         level, or out of memory.

- */

-struct gl_texture_image *

-_mesa_get_proxy_tex_image(struct gl_context *ctx, GLenum target, GLint level)

-{

-   struct gl_texture_image *texImage;

-   GLuint texIndex;

-

-   if (level < 0 )

-      return NULL;

-

-   switch (target) {

-   case GL_PROXY_TEXTURE_1D:

-      if (level >= ctx->Const.MaxTextureLevels)

-         return NULL;

-      texIndex = TEXTURE_1D_INDEX;

-      break;

-   case GL_PROXY_TEXTURE_2D:

-      if (level >= ctx->Const.MaxTextureLevels)

-         return NULL;

-      texIndex = TEXTURE_2D_INDEX;

-      break;

-   case GL_PROXY_TEXTURE_3D:

-      if (level >= ctx->Const.Max3DTextureLevels)

-         return NULL;

-      texIndex = TEXTURE_3D_INDEX;

-      break;

-   case GL_PROXY_TEXTURE_CUBE_MAP:

-      if (level >= ctx->Const.MaxCubeTextureLevels)

-         return NULL;

-      texIndex = TEXTURE_CUBE_INDEX;

-      break;

-   case GL_PROXY_TEXTURE_RECTANGLE_NV:

-      if (level > 0)

-         return NULL;

-      texIndex = TEXTURE_RECT_INDEX;

-      break;

-   case GL_PROXY_TEXTURE_1D_ARRAY_EXT:

-      if (level >= ctx->Const.MaxTextureLevels)

-         return NULL;

-      texIndex = TEXTURE_1D_ARRAY_INDEX;

-      break;

-   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:

-      if (level >= ctx->Const.MaxTextureLevels)

-         return NULL;

-      texIndex = TEXTURE_2D_ARRAY_INDEX;

-      break;

-   default:

-      return NULL;

-   }

-

-   texImage = ctx->Texture.ProxyTex[texIndex]->Image[0][level];

-   if (!texImage) {

-      texImage = ctx->Driver.NewTextureImage(ctx);

-      if (!texImage) {

-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "proxy texture allocation");

-         return NULL;

-      }

-      ctx->Texture.ProxyTex[texIndex]->Image[0][level] = texImage;

-      /* Set the 'back' pointer */

-      texImage->TexObject = ctx->Texture.ProxyTex[texIndex];

-   }

-   return texImage;

-}

-

-

-/**

- * Get the maximum number of allowed mipmap levels.

- *

- * \param ctx GL context.

- * \param target texture target.

- * 

- * \return the maximum number of allowed mipmap levels for the given

- * texture target, or zero if passed a bad target.

- *

- * \sa gl_constants.

- */

-GLint

-_mesa_max_texture_levels(struct gl_context *ctx, GLenum target)

-{

-   switch (target) {

-   case GL_TEXTURE_1D:

-   case GL_PROXY_TEXTURE_1D:

-   case GL_TEXTURE_2D:

-   case GL_PROXY_TEXTURE_2D:

-      return ctx->Const.MaxTextureLevels;

-   case GL_TEXTURE_3D:

-   case GL_PROXY_TEXTURE_3D:

-      return ctx->Const.Max3DTextureLevels;

-   case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:

-   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:

-   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:

-   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:

-   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:

-   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:

-   case GL_TEXTURE_CUBE_MAP_ARB:

-   case GL_PROXY_TEXTURE_CUBE_MAP_ARB:

-      return ctx->Extensions.ARB_texture_cube_map

-         ? ctx->Const.MaxCubeTextureLevels : 0;

-   case GL_TEXTURE_RECTANGLE_NV:

-   case GL_PROXY_TEXTURE_RECTANGLE_NV:

-      return ctx->Extensions.NV_texture_rectangle ? 1 : 0;

-   case GL_TEXTURE_1D_ARRAY_EXT:

-   case GL_PROXY_TEXTURE_1D_ARRAY_EXT:

-   case GL_TEXTURE_2D_ARRAY_EXT:

-   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:

-      return (ctx->Extensions.MESA_texture_array ||

-              ctx->Extensions.EXT_texture_array)

-         ? ctx->Const.MaxTextureLevels : 0;

-   default:

-      return 0; /* bad target */

-   }

-}

-

-

-/**

- * Return number of dimensions per mipmap level for the given texture target.

- */

-GLint

-_mesa_get_texture_dimensions(GLenum target)

-{

-   switch (target) {

-   case GL_TEXTURE_1D:

-   case GL_PROXY_TEXTURE_1D:

-      return 1;

-   case GL_TEXTURE_2D:

-   case GL_TEXTURE_RECTANGLE:

-   case GL_TEXTURE_CUBE_MAP:

-   case GL_PROXY_TEXTURE_2D:

-   case GL_PROXY_TEXTURE_RECTANGLE:

-   case GL_PROXY_TEXTURE_CUBE_MAP:

-   case GL_TEXTURE_CUBE_MAP_POSITIVE_X:

-   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:

-   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:

-   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:

-   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:

-   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:

-   case GL_TEXTURE_1D_ARRAY:

-   case GL_PROXY_TEXTURE_1D_ARRAY:

-      return 2;

-   case GL_TEXTURE_3D:

-   case GL_PROXY_TEXTURE_3D:

-   case GL_TEXTURE_2D_ARRAY:

-   case GL_PROXY_TEXTURE_2D_ARRAY:

-      return 3;

-   default:

-      _mesa_problem(NULL, "invalid target 0x%x in get_texture_dimensions()",

-                    target);

-      return 2;

-   }

-}

-

-

-

-

-#if 000 /* not used anymore */

-/*

- * glTexImage[123]D can accept a NULL image pointer.  In this case we

- * create a texture image with unspecified image contents per the OpenGL

- * spec.

- */

-static GLubyte *

-make_null_texture(GLint width, GLint height, GLint depth, GLenum format)

-{

-   const GLint components = _mesa_components_in_format(format);

-   const GLint numPixels = width * height * depth;

-   GLubyte *data = (GLubyte *) MALLOC(numPixels * components * sizeof(GLubyte));

-

-#ifdef DEBUG

-   /*

-    * Let's see if anyone finds this.  If glTexImage2D() is called with

-    * a NULL image pointer then load the texture image with something

-    * interesting instead of leaving it indeterminate.

-    */

-   if (data) {

-      static const char message[8][32] = {

-         "   X   X  XXXXX   XXX     X    ",

-         "   XX XX  X      X   X   X X   ",

-         "   X X X  X      X      X   X  ",

-         "   X   X  XXXX    XXX   XXXXX  ",

-         "   X   X  X          X  X   X  ",

-         "   X   X  X      X   X  X   X  ",

-         "   X   X  XXXXX   XXX   X   X  ",

-         "                               "

-      };

-

-      GLubyte *imgPtr = data;

-      GLint h, i, j, k;

-      for (h = 0; h < depth; h++) {

-         for (i = 0; i < height; i++) {

-            GLint srcRow = 7 - (i % 8);

-            for (j = 0; j < width; j++) {

-               GLint srcCol = j % 32;

-               GLubyte texel = (message[srcRow][srcCol]=='X') ? 255 : 70;

-               for (k = 0; k < components; k++) {

-                  *imgPtr++ = texel;

-               }

-            }

-         }

-      }

-   }

-#endif

-

-   return data;

-}

-#endif

-

-

-

-/**

- * Reset the fields of a gl_texture_image struct to zero.

- * 

- * \param img texture image structure.

- *

- * This is called when a proxy texture test fails, we set all the

- * image members (except DriverData) to zero.

- * It's also used in glTexImage[123]D as a safeguard to be sure all

- * required fields get initialized properly by the Driver.TexImage[123]D

- * functions.

- */

-static void

-clear_teximage_fields(struct gl_texture_image *img)

-{

-   ASSERT(img);

-   img->_BaseFormat = 0;

-   img->InternalFormat = 0;

-   img->Border = 0;

-   img->Width = 0;

-   img->Height = 0;

-   img->Depth = 0;

-   img->RowStride = 0;

-   if (img->ImageOffsets) {

-      free(img->ImageOffsets);

-      img->ImageOffsets = NULL;

-   }

-   img->Width2 = 0;

-   img->Height2 = 0;

-   img->Depth2 = 0;

-   img->WidthLog2 = 0;

-   img->HeightLog2 = 0;

-   img->DepthLog2 = 0;

-   img->Data = NULL;

-   img->TexFormat = MESA_FORMAT_NONE;

-   img->FetchTexelc = NULL;

-   img->FetchTexelf = NULL;

-}

-

-

-/**

- * Initialize basic fields of the gl_texture_image struct.

- *

- * \param ctx GL context.

- * \param target texture target (GL_TEXTURE_1D, GL_TEXTURE_RECTANGLE, etc).

- * \param img texture image structure to be initialized.

- * \param width image width.

- * \param height image height.

- * \param depth image depth.

- * \param border image border.

- * \param internalFormat internal format.

- * \param format  the actual hardware format (one of MESA_FORMAT_*)

- *

- * Fills in the fields of \p img with the given information.

- * Note: width, height and depth include the border.

- */

-void

-_mesa_init_teximage_fields(struct gl_context *ctx, GLenum target,

-                           struct gl_texture_image *img,

-                           GLsizei width, GLsizei height, GLsizei depth,

-                           GLint border, GLenum internalFormat,

-                           gl_format format)

-{

-   GLint i, dims;

-

-   ASSERT(img);

-   ASSERT(width >= 0);

-   ASSERT(height >= 0);

-   ASSERT(depth >= 0);

-

-   img->_BaseFormat = _mesa_base_tex_format( ctx, internalFormat );

-   ASSERT(img->_BaseFormat > 0);

-   img->InternalFormat = internalFormat;

-   img->Border = border;

-   img->Width = width;

-   img->Height = height;

-   img->Depth = depth;

-

-   img->Width2 = width - 2 * border;   /* == 1 << img->WidthLog2; */

-   img->WidthLog2 = logbase2(img->Width2);

-

-   if (height == 1) { /* 1-D texture */

-      img->Height2 = 1;

-      img->HeightLog2 = 0;

-   }

-   else {

-      img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */

-      img->HeightLog2 = logbase2(img->Height2);

-   }

-

-   if (depth == 1) {  /* 2-D texture */

-      img->Depth2 = 1;

-      img->DepthLog2 = 0;

-   }

-   else {

-      img->Depth2 = depth - 2 * border;   /* == 1 << img->DepthLog2; */

-      img->DepthLog2 = logbase2(img->Depth2);

-   }

-

-   img->MaxLog2 = MAX2(img->WidthLog2, img->HeightLog2);

-

-   if ((width == 1 || _mesa_is_pow_two(img->Width2)) &&

-       (height == 1 || _mesa_is_pow_two(img->Height2)) &&

-       (depth == 1 || _mesa_is_pow_two(img->Depth2)))

-      img->_IsPowerOfTwo = GL_TRUE;

-   else

-      img->_IsPowerOfTwo = GL_FALSE;

-

-   /* RowStride and ImageOffsets[] describe how to address texels in 'Data' */

-   img->RowStride = width;

-   /* Allocate the ImageOffsets array and initialize to typical values.

-    * We allocate the array for 1D/2D textures too in order to avoid special-

-    * case code in the texstore routines.

-    */

-   if (img->ImageOffsets)

-      free(img->ImageOffsets);

-   img->ImageOffsets = (GLuint *) malloc(depth * sizeof(GLuint));

-   for (i = 0; i < depth; i++) {

-      img->ImageOffsets[i] = i * width * height;

-   }

-

-   /* Compute Width/Height/DepthScale for mipmap lod computation */

-   if (target == GL_TEXTURE_RECTANGLE_NV) {

-      /* scale = 1.0 since texture coords directly map to texels */

-      img->WidthScale = 1.0;

-      img->HeightScale = 1.0;

-      img->DepthScale = 1.0;

-   }

-   else {

-      img->WidthScale = (GLfloat) img->Width;

-      img->HeightScale = (GLfloat) img->Height;

-      img->DepthScale = (GLfloat) img->Depth;

-   }

-

-   img->TexFormat = format;

-

-   dims = _mesa_get_texture_dimensions(target);

-

-   _mesa_set_fetch_functions(img, dims);

-}

-

-

-/**

- * Free and clear fields of the gl_texture_image struct.

- *

- * \param ctx GL context.

- * \param texImage texture image structure to be cleared.

- *

- * After the call, \p texImage will have no data associated with it.  Its

- * fields are cleared so that its parent object will test incomplete.

- */

-void

-_mesa_clear_texture_image(struct gl_context *ctx,

-                          struct gl_texture_image *texImage)

-{

-   ctx->Driver.FreeTexImageData(ctx, texImage);

-   clear_teximage_fields(texImage);

-}

-

-

-/**

- * This is the fallback for Driver.TestProxyTexImage().  Test the texture

- * level, width, height and depth against the ctx->Const limits for textures.

- *

- * A hardware driver might override this function if, for example, the

- * max 3D texture size is 512x512x64 (i.e. not a cube).

- *

- * Note that width, height, depth == 0 is not an error.  However, a

- * texture with zero width/height/depth will be considered "incomplete"

- * and texturing will effectively be disabled.

- *

- * \param target  one of GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D,

- *                GL_PROXY_TEXTURE_3D, GL_PROXY_TEXTURE_RECTANGLE_NV,

- *                GL_PROXY_TEXTURE_CUBE_MAP_ARB.

- * \param level  as passed to glTexImage

- * \param internalFormat  as passed to glTexImage

- * \param format  as passed to glTexImage

- * \param type  as passed to glTexImage

- * \param width  as passed to glTexImage

- * \param height  as passed to glTexImage

- * \param depth  as passed to glTexImage

- * \param border  as passed to glTexImage

- * \return GL_TRUE if the image is acceptable, GL_FALSE if not acceptable.

- */

-GLboolean

-_mesa_test_proxy_teximage(struct gl_context *ctx, GLenum target, GLint level,

-                          GLint internalFormat, GLenum format, GLenum type,

-                          GLint width, GLint height, GLint depth, GLint border)

-{

-   GLint maxSize;

-

-   (void) internalFormat;

-   (void) format;

-   (void) type;

-

-   switch (target) {

-   case GL_PROXY_TEXTURE_1D:

-      maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);

-      if (width < 2 * border || width > 2 + maxSize)

-         return GL_FALSE;

-      if (level >= ctx->Const.MaxTextureLevels)

-         return GL_FALSE;

-      if (!ctx->Extensions.ARB_texture_non_power_of_two) {

-         if (width > 0 && !_mesa_is_pow_two(width - 2 * border))

-            return GL_FALSE;

-      }

-      return GL_TRUE;

-

-   case GL_PROXY_TEXTURE_2D:

-      maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);

-      if (width < 2 * border || width > 2 + maxSize)

-         return GL_FALSE;

-      if (height < 2 * border || height > 2 + maxSize)

-         return GL_FALSE;

-      if (level >= ctx->Const.MaxTextureLevels)

-         return GL_FALSE;

-      if (!ctx->Extensions.ARB_texture_non_power_of_two) {

-         if (width > 0 && !_mesa_is_pow_two(width - 2 * border))

-            return GL_FALSE;

-         if (height > 0 && !_mesa_is_pow_two(height - 2 * border))

-            return GL_FALSE;

-      }

-      return GL_TRUE;

-

-   case GL_PROXY_TEXTURE_3D:

-      maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);

-      if (width < 2 * border || width > 2 + maxSize)

-         return GL_FALSE;

-      if (height < 2 * border || height > 2 + maxSize)

-         return GL_FALSE;

-      if (depth < 2 * border || depth > 2 + maxSize)

-         return GL_FALSE;

-      if (level >= ctx->Const.Max3DTextureLevels)

-         return GL_FALSE;

-      if (!ctx->Extensions.ARB_texture_non_power_of_two) {

-         if (width > 0 && !_mesa_is_pow_two(width - 2 * border))

-            return GL_FALSE;

-         if (height > 0 && !_mesa_is_pow_two(height - 2 * border))

-            return GL_FALSE;

-         if (depth > 0 && !_mesa_is_pow_two(depth - 2 * border))

-            return GL_FALSE;

-      }

-      return GL_TRUE;

-

-   case GL_PROXY_TEXTURE_RECTANGLE_NV:

-      maxSize = ctx->Const.MaxTextureRectSize;

-      if (width < 0 || width > maxSize)

-         return GL_FALSE;

-      if (height < 0 || height > maxSize)

-         return GL_FALSE;

-      if (level != 0)

-         return GL_FALSE;

-      return GL_TRUE;

-

-   case GL_PROXY_TEXTURE_CUBE_MAP_ARB:

-      maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 1);

-      if (width < 2 * border || width > 2 + maxSize)

-         return GL_FALSE;

-      if (height < 2 * border || height > 2 + maxSize)

-         return GL_FALSE;

-      if (level >= ctx->Const.MaxCubeTextureLevels)

-         return GL_FALSE;

-      if (!ctx->Extensions.ARB_texture_non_power_of_two) {

-         if (width > 0 && !_mesa_is_pow_two(width - 2 * border))

-            return GL_FALSE;

-         if (height > 0 && !_mesa_is_pow_two(height - 2 * border))

-            return GL_FALSE;

-      }

-      return GL_TRUE;

-

-   case GL_PROXY_TEXTURE_1D_ARRAY_EXT:

-      maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);

-      if (width < 2 * border || width > 2 + maxSize)

-         return GL_FALSE;

-      if (height < 1 || height > ctx->Const.MaxArrayTextureLayers)

-         return GL_FALSE;

-      if (level >= ctx->Const.MaxTextureLevels)

-         return GL_FALSE;

-      if (!ctx->Extensions.ARB_texture_non_power_of_two) {

-         if (width > 0 && !_mesa_is_pow_two(width - 2 * border))

-            return GL_FALSE;

-      }

-      return GL_TRUE;

-

-   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:

-      maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);

-      if (width < 2 * border || width > 2 + maxSize)

-         return GL_FALSE;

-      if (height < 2 * border || height > 2 + maxSize)

-         return GL_FALSE;

-      if (depth < 1 || depth > ctx->Const.MaxArrayTextureLayers)

-         return GL_FALSE;

-      if (level >= ctx->Const.MaxTextureLevels)

-         return GL_FALSE;

-      if (!ctx->Extensions.ARB_texture_non_power_of_two) {

-         if (width > 0 && !_mesa_is_pow_two(width - 2 * border))

-            return GL_FALSE;

-         if (height > 0 && !_mesa_is_pow_two(height - 2 * border))

-            return GL_FALSE;

-      }

-      return GL_TRUE;

-

-   default:

-      _mesa_problem(ctx, "Invalid target in _mesa_test_proxy_teximage");

-      return GL_FALSE;

-   }

-}

-

-

-/**

- * Check if the memory used by the texture would exceed the driver's limit.

- * This lets us support a max 3D texture size of 8K (for example) but

- * prevents allocating a full 8K x 8K x 8K texture.

- * XXX this could be rolled into the proxy texture size test (above) but

- * we don't have the actual texture internal format at that point.

- */

-static GLboolean

-legal_texture_size(struct gl_context *ctx, gl_format format,

-                   GLint width, GLint height, GLint depth)

-{

-   uint64_t bytes = _mesa_format_image_size64(format, width, height, depth);

-   uint64_t mbytes = bytes / (1024 * 1024); /* convert to MB */

-   return mbytes <= (uint64_t) ctx->Const.MaxTextureMbytes;

-}

-

-

-

-/**

- * Helper function to determine whether a target and specific compression

- * format are supported.

- */

-static GLboolean

-target_can_be_compressed(const struct gl_context *ctx, GLenum target,

-                         GLenum intFormat)

-{

-   (void) intFormat;  /* not used yet */

-

-   switch (target) {

-   case GL_TEXTURE_2D:

-   case GL_PROXY_TEXTURE_2D:

-      return GL_TRUE; /* true for any compressed format so far */

-   case GL_PROXY_TEXTURE_CUBE_MAP:

-   case GL_TEXTURE_CUBE_MAP_POSITIVE_X:

-   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:

-   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:

-   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:

-   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:

-   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:

-      return ctx->Extensions.ARB_texture_cube_map;

-   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:

-   case GL_TEXTURE_2D_ARRAY_EXT:

-      return (ctx->Extensions.MESA_texture_array ||

-              ctx->Extensions.EXT_texture_array);

-   default:

-      return GL_FALSE;

-   }      

-}

-

-

-/**

- * Check if the given texture target value is legal for a

- * glTexImage1/2/3D call.

- */

-static GLboolean

-legal_teximage_target(struct gl_context *ctx, GLuint dims, GLenum target)

-{

-   switch (dims) {

-   case 1:

-      switch (target) {

-      case GL_TEXTURE_1D:

-      case GL_PROXY_TEXTURE_1D:

-         return GL_TRUE;

-      default:

-         return GL_FALSE;

-      }

-   case 2:

-      switch (target) {

-      case GL_TEXTURE_2D:

-      case GL_PROXY_TEXTURE_2D:

-         return GL_TRUE;

-      case GL_PROXY_TEXTURE_CUBE_MAP:

-      case GL_TEXTURE_CUBE_MAP_POSITIVE_X:

-      case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:

-      case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:

-      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:

-      case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:

-      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:

-         return ctx->Extensions.ARB_texture_cube_map;

-      case GL_TEXTURE_RECTANGLE_NV:

-      case GL_PROXY_TEXTURE_RECTANGLE_NV:

-         return ctx->Extensions.NV_texture_rectangle;

-      case GL_TEXTURE_1D_ARRAY_EXT:

-      case GL_PROXY_TEXTURE_1D_ARRAY_EXT:

-         return (ctx->Extensions.MESA_texture_array ||

-                 ctx->Extensions.EXT_texture_array);

-      default:

-         return GL_FALSE;

-      }

-   case 3:

-      switch (target) {

-      case GL_TEXTURE_3D:

-      case GL_PROXY_TEXTURE_3D:

-         return GL_TRUE;

-      case GL_TEXTURE_2D_ARRAY_EXT:

-      case GL_PROXY_TEXTURE_2D_ARRAY_EXT:

-         return (ctx->Extensions.MESA_texture_array ||

-                 ctx->Extensions.EXT_texture_array);

-      default:

-         return GL_FALSE;

-      }

-   default:

-      _mesa_problem(ctx, "invalid dims=%u in legal_teximage_target()", dims);

-      return GL_FALSE;

-   }

-}

-

-

-/**

- * Check if the given texture target value is legal for a

- * glTexSubImage, glCopyTexSubImage or glCopyTexImage call.

- * The difference compared to legal_teximage_target() above is that

- * proxy targets are not supported.

- */

-static GLboolean

-legal_texsubimage_target(struct gl_context *ctx, GLuint dims, GLenum target)

-{

-   switch (dims) {

-   case 1:

-      return target == GL_TEXTURE_1D;

-   case 2:

-      switch (target) {

-      case GL_TEXTURE_2D:

-         return GL_TRUE;

-      case GL_TEXTURE_CUBE_MAP_POSITIVE_X:

-      case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:

-      case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:

-      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:

-      case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:

-      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:

-         return ctx->Extensions.ARB_texture_cube_map;

-      case GL_TEXTURE_RECTANGLE_NV:

-         return ctx->Extensions.NV_texture_rectangle;

-      case GL_TEXTURE_1D_ARRAY_EXT:

-         return (ctx->Extensions.MESA_texture_array ||

-                 ctx->Extensions.EXT_texture_array);

-      default:

-         return GL_FALSE;

-      }

-   case 3:

-      switch (target) {

-      case GL_TEXTURE_3D:

-         return GL_TRUE;

-      case GL_TEXTURE_2D_ARRAY_EXT:

-         return (ctx->Extensions.MESA_texture_array ||

-                 ctx->Extensions.EXT_texture_array);

-      default:

-         return GL_FALSE;

-      }

-   default:

-      _mesa_problem(ctx, "invalid dims=%u in legal_texsubimage_target()",

-                    dims);

-      return GL_FALSE;

-   }

-}

-

-

-/**

- * Test the glTexImage[123]D() parameters for errors.

- * 

- * \param ctx GL context.

- * \param dimensions texture image dimensions (must be 1, 2 or 3).

- * \param target texture target given by the user.

- * \param level image level given by the user.

- * \param internalFormat internal format given by the user.

- * \param format pixel data format given by the user.

- * \param type pixel data type given by the user.

- * \param width image width given by the user.

- * \param height image height given by the user.

- * \param depth image depth given by the user.

- * \param border image border given by the user.

- * 

- * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.

- *

- * Verifies each of the parameters against the constants specified in

- * __struct gl_contextRec::Const and the supported extensions, and according

- * to the OpenGL specification.

- */

-static GLboolean

-texture_error_check( struct gl_context *ctx,

-                     GLuint dimensions, GLenum target,

-                     GLint level, GLint internalFormat,

-                     GLenum format, GLenum type,

-                     GLint width, GLint height,

-                     GLint depth, GLint border )

-{

-   const GLenum proxyTarget = get_proxy_target(target);

-   const GLboolean isProxy = target == proxyTarget;

-   GLboolean sizeOK = GL_TRUE;

-   GLboolean colorFormat, indexFormat;

-

-   /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */

-   if (level < 0 || level >= MAX_TEXTURE_LEVELS) {

-      if (!isProxy) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glTexImage%dD(level=%d)", dimensions, level);

-      }

-      return GL_TRUE;

-   }

-

-   /* Check border */

-   if (border < 0 || border > 1 ||

-       ((target == GL_TEXTURE_RECTANGLE_NV ||

-         target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) {

-      if (!isProxy) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glTexImage%dD(border=%d)", dimensions, border);

-      }

-      return GL_TRUE;

-   }

-

-   if (width < 0 || height < 0 || depth < 0) {

-      if (!isProxy) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glTexImage%dD(width, height or depth < 0)", dimensions);

-      }

-      return GL_TRUE;

-   }

-

-   /* Do this simple check before calling the TestProxyTexImage() function */

-   if (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {

-      sizeOK = (width == height);

-   }

-

-   /*

-    * Use the proxy texture driver hook to see if the size/level/etc are

-    * legal.

-    */

-   sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,

-                                                    internalFormat, format,

-                                                    type, width, height,

-                                                    depth, border);

-   if (!sizeOK) {

-      if (!isProxy) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glTexImage%dD(level=%d, width=%d, height=%d, depth=%d)",

-                     dimensions, level, width, height, depth);

-      }

-      return GL_TRUE;

-   }

-

-   /* Check internalFormat */

-   if (_mesa_base_tex_format(ctx, internalFormat) < 0) {

-      if (!isProxy) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glTexImage%dD(internalFormat=%s)",

-                     dimensions, _mesa_lookup_enum_by_nr(internalFormat));

-      }

-      return GL_TRUE;

-   }

-

-   /* Check incoming image format and type */

-   if (!_mesa_is_legal_format_and_type(ctx, format, type)) {

-      /* Normally, GL_INVALID_OPERATION is generated by a format/type

-       * mismatch (see the 1.2 spec page 94, sec 3.6.4.).  But with the

-       * GL_EXT_texture_integer extension, some combinations should generate

-       * GL_INVALID_ENUM instead (grr!).

-       */

-      if (!isProxy) {

-         GLenum error = _mesa_is_integer_format(format)

-            ? GL_INVALID_ENUM : GL_INVALID_OPERATION;

-         _mesa_error(ctx, error,

-                     "glTexImage%dD(incompatible format 0x%x, type 0x%x)",

-                     dimensions, format, type);

-      }

-      return GL_TRUE;

-   }

-

-   /* make sure internal format and format basically agree */

-   colorFormat = _mesa_is_color_format(format);

-   indexFormat = _mesa_is_index_format(format);

-   if ((_mesa_is_color_format(internalFormat) && !colorFormat && !indexFormat) ||

-       (_mesa_is_index_format(internalFormat) && !indexFormat) ||

-       (_mesa_is_depth_format(internalFormat) != _mesa_is_depth_format(format)) ||

-       (_mesa_is_ycbcr_format(internalFormat) != _mesa_is_ycbcr_format(format)) ||

-       (_mesa_is_depthstencil_format(internalFormat) != _mesa_is_depthstencil_format(format)) ||

-       (_mesa_is_dudv_format(internalFormat) != _mesa_is_dudv_format(format))) {

-      if (!isProxy)

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glTexImage%dD(incompatible internalFormat 0x%x, format 0x%x)",

-                     dimensions, internalFormat, format);

-      return GL_TRUE;

-   }

-

-   /* additional checks for ycbcr textures */

-   if (internalFormat == GL_YCBCR_MESA) {

-      ASSERT(ctx->Extensions.MESA_ycbcr_texture);

-      if (type != GL_UNSIGNED_SHORT_8_8_MESA &&

-          type != GL_UNSIGNED_SHORT_8_8_REV_MESA) {

-         char message[100];

-         _mesa_snprintf(message, sizeof(message),

-                        "glTexImage%dD(format/type YCBCR mismatch", dimensions);

-         _mesa_error(ctx, GL_INVALID_ENUM, "%s", message);

-         return GL_TRUE; /* error */

-      }

-      if (target != GL_TEXTURE_2D &&

-          target != GL_PROXY_TEXTURE_2D &&

-          target != GL_TEXTURE_RECTANGLE_NV &&

-          target != GL_PROXY_TEXTURE_RECTANGLE_NV) {

-         if (!isProxy)

-            _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage(target)");

-         return GL_TRUE;

-      }

-      if (border != 0) {

-         if (!isProxy) {

-            char message[100];

-            _mesa_snprintf(message, sizeof(message),

-                           "glTexImage%dD(format=GL_YCBCR_MESA and border=%d)",

-                           dimensions, border);

-            _mesa_error(ctx, GL_INVALID_VALUE, "%s", message);

-         }

-         return GL_TRUE;

-      }

-   }

-

-   /* additional checks for depth textures */

-   if (_mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT) {

-      /* Only 1D, 2D and rectangular textures supported, not 3D or cubes */

-      if (target != GL_TEXTURE_1D &&

-          target != GL_PROXY_TEXTURE_1D &&

-          target != GL_TEXTURE_2D &&

-          target != GL_PROXY_TEXTURE_2D &&

-          target != GL_TEXTURE_RECTANGLE_ARB &&

-          target != GL_PROXY_TEXTURE_RECTANGLE_ARB) {

-         if (!isProxy)

-            _mesa_error(ctx, GL_INVALID_ENUM,

-                        "glTexImage(target/internalFormat)");

-         return GL_TRUE;

-      }

-   }

-

-   /* additional checks for compressed textures */

-   if (_mesa_is_compressed_format(ctx, internalFormat)) {

-      if (!target_can_be_compressed(ctx, target, internalFormat)) {

-         if (!isProxy)

-            _mesa_error(ctx, GL_INVALID_ENUM,

-                        "glTexImage%dD(target)", dimensions);

-         return GL_TRUE;

-      }

-      if (border != 0) {

-         if (!isProxy) {

-            _mesa_error(ctx, GL_INVALID_OPERATION,

-                        "glTexImage%dD(border!=0)", dimensions);

-         }

-         return GL_TRUE;

-      }

-   }

-

-   /* additional checks for integer textures */

-   if (ctx->Extensions.EXT_texture_integer &&

-       (_mesa_is_integer_format(format) !=

-        _mesa_is_integer_format(internalFormat))) {

-      if (!isProxy) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glTexImage%dD(integer/non-integer format mismatch)",

-                     dimensions);

-      }

-      return GL_TRUE;

-   }

-

-   /* if we get here, the parameters are OK */

-   return GL_FALSE;

-}

-

-

-/**

- * Test glTexSubImage[123]D() parameters for errors.

- * 

- * \param ctx GL context.

- * \param dimensions texture image dimensions (must be 1, 2 or 3).

- * \param target texture target given by the user.

- * \param level image level given by the user.

- * \param xoffset sub-image x offset given by the user.

- * \param yoffset sub-image y offset given by the user.

- * \param zoffset sub-image z offset given by the user.

- * \param format pixel data format given by the user.

- * \param type pixel data type given by the user.

- * \param width image width given by the user.

- * \param height image height given by the user.

- * \param depth image depth given by the user.

- * 

- * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.

- *

- * Verifies each of the parameters against the constants specified in

- * __struct gl_contextRec::Const and the supported extensions, and according

- * to the OpenGL specification.

- */

-static GLboolean

-subtexture_error_check( struct gl_context *ctx, GLuint dimensions,

-                        GLenum target, GLint level,

-                        GLint xoffset, GLint yoffset, GLint zoffset,

-                        GLint width, GLint height, GLint depth,

-                        GLenum format, GLenum type )

-{

-   /* Basic level check */

-   if (level < 0 || level >= MAX_TEXTURE_LEVELS) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level=%d)", level);

-      return GL_TRUE;

-   }

-

-   /* Check for negative sizes */

-   if (width < 0) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glTexSubImage%dD(width=%d)", dimensions, width);

-      return GL_TRUE;

-   }

-   if (height < 0 && dimensions > 1) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glTexSubImage%dD(height=%d)", dimensions, height);

-      return GL_TRUE;

-   }

-   if (depth < 0 && dimensions > 2) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glTexSubImage%dD(depth=%d)", dimensions, depth);

-      return GL_TRUE;

-   }

-

-   if (!_mesa_is_legal_format_and_type(ctx, format, type)) {

-      /* As with the glTexImage2D check above, the error code here

-       * depends on texture integer.

-       */

-      GLenum error = _mesa_is_integer_format(format)

-         ? GL_INVALID_OPERATION : GL_INVALID_ENUM;

-      _mesa_error(ctx, error,

-                  "glTexSubImage%dD(incompatible format 0x%x, type 0x%x)",

-                  dimensions, format, type);

-      return GL_TRUE;

-   }

-

-   return GL_FALSE;

-}

-

-

-/**

- * Do second part of glTexSubImage which depends on the destination texture.

- * \return GL_TRUE if error recorded, GL_FALSE otherwise

- */

-static GLboolean

-subtexture_error_check2( struct gl_context *ctx, GLuint dimensions,

-			 GLenum target, GLint level,

-			 GLint xoffset, GLint yoffset, GLint zoffset,

-			 GLint width, GLint height, GLint depth,

-			 GLenum format, GLenum type,

-			 const struct gl_texture_image *destTex )

-{

-   if (!destTex) {

-      /* undefined image level */

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glTexSubImage%dD", dimensions);

-      return GL_TRUE;

-   }

-

-   if (xoffset < -((GLint)destTex->Border)) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset)",

-                  dimensions);

-      return GL_TRUE;

-   }

-   if (xoffset + width > (GLint) (destTex->Width + destTex->Border)) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset+width)",

-                  dimensions);

-      return GL_TRUE;

-   }

-   if (dimensions > 1) {

-      if (yoffset < -((GLint)destTex->Border)) {

-         _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset)",

-                     dimensions);

-         return GL_TRUE;

-      }

-      if (yoffset + height > (GLint) (destTex->Height + destTex->Border)) {

-         _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset+height)",

-                     dimensions);

-         return GL_TRUE;

-      }

-   }

-   if (dimensions > 2) {

-      if (zoffset < -((GLint)destTex->Border)) {

-         _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset)");

-         return GL_TRUE;

-      }

-      if (zoffset + depth  > (GLint) (destTex->Depth + destTex->Border)) {

-         _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset+depth)");

-         return GL_TRUE;

-      }

-   }

-

-   if (_mesa_is_format_compressed(destTex->TexFormat)) {

-      GLuint bw, bh;

-

-      /* do tests which depend on compression block size */

-      _mesa_get_format_block_size(destTex->TexFormat, &bw, &bh);

-

-      /* offset must be multiple of block size */

-      if ((xoffset % bw != 0) || (yoffset % bh != 0)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glTexSubImage%dD(xoffset = %d, yoffset = %d)",

-                     dimensions, xoffset, yoffset);

-         return GL_TRUE;

-      }

-      /* size must be multiple of bw by bh or equal to whole texture size */

-      if ((width % bw != 0) && (GLuint) width != destTex->Width) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glTexSubImage%dD(width = %d)", dimensions, width);

-         return GL_TRUE;

-      }         

-      if ((height % bh != 0) && (GLuint) height != destTex->Height) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glTexSubImage%dD(height = %d)", dimensions, height);

-         return GL_TRUE;

-      }         

-   }

-

-   return GL_FALSE;

-}

-

-

-/**

- * Test glCopyTexImage[12]D() parameters for errors.

- * 

- * \param ctx GL context.

- * \param dimensions texture image dimensions (must be 1, 2 or 3).

- * \param target texture target given by the user.

- * \param level image level given by the user.

- * \param internalFormat internal format given by the user.

- * \param width image width given by the user.

- * \param height image height given by the user.

- * \param border texture border.

- * 

- * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.

- * 

- * Verifies each of the parameters against the constants specified in

- * __struct gl_contextRec::Const and the supported extensions, and according

- * to the OpenGL specification.

- */

-static GLboolean

-copytexture_error_check( struct gl_context *ctx, GLuint dimensions,

-                         GLenum target, GLint level, GLint internalFormat,

-                         GLint width, GLint height, GLint border )

-{

-   const GLenum proxyTarget = get_proxy_target(target);

-   const GLenum type = GL_FLOAT;

-   GLboolean sizeOK;

-   GLint format;

-

-   /* check target */

-   if (!legal_texsubimage_target(ctx, dimensions, target)) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexImage%uD(target=%s)",

-                  dimensions, _mesa_lookup_enum_by_nr(target));

-      return GL_TRUE;

-   }       

-

-   /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */

-   if (level < 0 || level >= MAX_TEXTURE_LEVELS) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glCopyTexImage%dD(level=%d)", dimensions, level);

-      return GL_TRUE;

-   }

-

-   /* Check that the source buffer is complete */

-   if (ctx->ReadBuffer->Name) {

-      _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);

-      if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-         _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,

-                     "glCopyTexImage%dD(invalid readbuffer)", dimensions);

-         return GL_TRUE;

-      }

-   }

-

-   /* Check border */

-   if (border < 0 || border > 1 ||

-       ((target == GL_TEXTURE_RECTANGLE_NV ||

-         target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) {

-      return GL_TRUE;

-   }

-

-   format = _mesa_base_tex_format(ctx, internalFormat);

-   if (format < 0) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glCopyTexImage%dD(internalFormat)", dimensions);

-      return GL_TRUE;

-   }

-

-   if (!_mesa_source_buffer_exists(ctx, format)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glCopyTexImage%dD(missing readbuffer)", dimensions);

-      return GL_TRUE;

-   }

-

-   /* Do size, level checking */

-   sizeOK = (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB)

-      ? (width == height) : 1;

-

-   sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,

-                                                    internalFormat, format,

-                                                    type, width, height,

-                                                    1, border);

-

-   if (!sizeOK) {

-      if (dimensions == 1) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glCopyTexImage1D(width=%d)", width);

-      }

-      else {

-         ASSERT(dimensions == 2);

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glCopyTexImage2D(width=%d, height=%d)", width, height);

-      }

-      return GL_TRUE;

-   }

-

-   if (_mesa_is_compressed_format(ctx, internalFormat)) {

-      if (!target_can_be_compressed(ctx, target, internalFormat)) {

-         _mesa_error(ctx, GL_INVALID_ENUM,

-                     "glCopyTexImage%dD(target)", dimensions);

-         return GL_TRUE;

-      }

-      if (border != 0) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glCopyTexImage%dD(border!=0)", dimensions);

-         return GL_TRUE;

-      }

-   }

-   else if (_mesa_is_depth_format(internalFormat)) {

-      /* make sure we have depth/stencil buffers */

-      if (!ctx->ReadBuffer->_DepthBuffer) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glCopyTexImage%dD(no depth)", dimensions);

-         return GL_TRUE;

-      }

-   }

-   else if (_mesa_is_depthstencil_format(internalFormat)) {

-      /* make sure we have depth/stencil buffers */

-      if (!ctx->ReadBuffer->_DepthBuffer || !ctx->ReadBuffer->_StencilBuffer) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glCopyTexImage%dD(no depth/stencil buffer)", dimensions);

-         return GL_TRUE;

-      }

-   }

-

-   /* if we get here, the parameters are OK */

-   return GL_FALSE;

-}

-

-

-/**

- * Test glCopyTexSubImage[12]D() parameters for errors.

- * Note that this is the first part of error checking.

- * See also copytexsubimage_error_check2() below for the second part.

- * 

- * \param ctx GL context.

- * \param dimensions texture image dimensions (must be 1, 2 or 3).

- * \param target texture target given by the user.

- * \param level image level given by the user.

- * 

- * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.

- */

-static GLboolean

-copytexsubimage_error_check1( struct gl_context *ctx, GLuint dimensions,

-                              GLenum target, GLint level)

-{

-   /* Check that the source buffer is complete */

-   if (ctx->ReadBuffer->Name) {

-      _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);

-      if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-         _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,

-                     "glCopyTexImage%dD(invalid readbuffer)", dimensions);

-         return GL_TRUE;

-      }

-   }

-

-   /* check target (proxies not allowed) */

-   if (!legal_texsubimage_target(ctx, dimensions, target)) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexSubImage%uD(target=%s)",

-                  dimensions, _mesa_lookup_enum_by_nr(target));

-      return GL_TRUE;

-   }

-

-   /* Check level */

-   if (level < 0 || level >= MAX_TEXTURE_LEVELS) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glCopyTexSubImage%dD(level=%d)", dimensions, level);

-      return GL_TRUE;

-   }

-

-   return GL_FALSE;

-}

-

-

-/**

- * Second part of error checking for glCopyTexSubImage[12]D().

- * \param xoffset sub-image x offset given by the user.

- * \param yoffset sub-image y offset given by the user.

- * \param zoffset sub-image z offset given by the user.

- * \param width image width given by the user.

- * \param height image height given by the user.

- */

-static GLboolean

-copytexsubimage_error_check2( struct gl_context *ctx, GLuint dimensions,

-			      GLenum target, GLint level,

-			      GLint xoffset, GLint yoffset, GLint zoffset,

-			      GLsizei width, GLsizei height,

-			      const struct gl_texture_image *teximage )

-{

-   /* check that dest tex image exists */

-   if (!teximage) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glCopyTexSubImage%dD(undefined texture level: %d)",

-                  dimensions, level);

-      return GL_TRUE;

-   }

-

-   /* Check size */

-   if (width < 0) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glCopyTexSubImage%dD(width=%d)", dimensions, width);

-      return GL_TRUE;

-   }

-   if (dimensions > 1 && height < 0) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glCopyTexSubImage%dD(height=%d)", dimensions, height);

-      return GL_TRUE;

-   }

-

-   /* check x/y offsets */

-   if (xoffset < -((GLint)teximage->Border)) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glCopyTexSubImage%dD(xoffset=%d)", dimensions, xoffset);

-      return GL_TRUE;

-   }

-   if (xoffset + width > (GLint) (teximage->Width + teximage->Border)) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glCopyTexSubImage%dD(xoffset+width)", dimensions);

-      return GL_TRUE;

-   }

-   if (dimensions > 1) {

-      if (yoffset < -((GLint)teximage->Border)) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glCopyTexSubImage%dD(yoffset=%d)", dimensions, yoffset);

-         return GL_TRUE;

-      }

-      /* NOTE: we're adding the border here, not subtracting! */

-      if (yoffset + height > (GLint) (teximage->Height + teximage->Border)) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glCopyTexSubImage%dD(yoffset+height)", dimensions);

-         return GL_TRUE;

-      }

-   }

-

-   /* check z offset */

-   if (dimensions > 2) {

-      if (zoffset < -((GLint)teximage->Border)) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glCopyTexSubImage%dD(zoffset)", dimensions);

-         return GL_TRUE;

-      }

-      if (zoffset > (GLint) (teximage->Depth + teximage->Border)) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glCopyTexSubImage%dD(zoffset+depth)", dimensions);

-         return GL_TRUE;

-      }

-   }

-

-   if (_mesa_is_format_compressed(teximage->TexFormat)) {

-      /* offset must be multiple of 4 */

-      if ((xoffset & 3) || (yoffset & 3)) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glCopyTexSubImage%dD(xoffset or yoffset)", dimensions);

-         return GL_TRUE;

-      }

-      /* size must be multiple of 4 */

-      if ((width & 3) != 0 && (GLuint) width != teximage->Width) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glCopyTexSubImage%dD(width)", dimensions);

-         return GL_TRUE;

-      }         

-      if ((height & 3) != 0 && (GLuint) height != teximage->Height) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glCopyTexSubImage%dD(height)", dimensions);

-         return GL_TRUE;

-      }         

-   }

-

-   if (teximage->InternalFormat == GL_YCBCR_MESA) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glCopyTexSubImage2D");

-      return GL_TRUE;

-   }

-

-   if (!_mesa_source_buffer_exists(ctx, teximage->_BaseFormat)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glCopyTexSubImage%dD(missing readbuffer, format=0x%x)",

-                  dimensions, teximage->_BaseFormat);

-      return GL_TRUE;

-   }

-

-   if (teximage->_BaseFormat == GL_DEPTH_COMPONENT) {

-      if (!ctx->ReadBuffer->_DepthBuffer) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glCopyTexSubImage%dD(no depth buffer)",

-                     dimensions);

-         return GL_TRUE;

-      }

-   }

-   else if (teximage->_BaseFormat == GL_DEPTH_STENCIL_EXT) {

-      if (!ctx->ReadBuffer->_DepthBuffer || !ctx->ReadBuffer->_StencilBuffer) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glCopyTexSubImage%dD(no depth/stencil buffer)",

-                     dimensions);

-         return GL_TRUE;

-      }

-   }

-

-   /* If copying into an integer texture, the source buffer must also be

-    * integer-valued.

-    */

-   if (_mesa_is_format_integer_color(teximage->TexFormat)) {

-      struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;

-      if (!_mesa_is_format_integer_color(rb->Format)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glCopyTexSubImage%dD(source buffer is not integer format)",

-                  dimensions);

-         return GL_TRUE;

-      }

-   }

-

-   /* if we get here, the parameters are OK */

-   return GL_FALSE;

-}

-

-

-/** Callback info for walking over FBO hash table */

-struct cb_info

-{

-   struct gl_context *ctx;

-   struct gl_texture_object *texObj;

-   GLuint level, face;

-};

-

-

-/**

- * Check render to texture callback.  Called from _mesa_HashWalk().

- */

-static void

-check_rtt_cb(GLuint key, void *data, void *userData)

-{

-   struct gl_framebuffer *fb = (struct gl_framebuffer *) data;

-   const struct cb_info *info = (struct cb_info *) userData;

-   struct gl_context *ctx = info->ctx;

-   const struct gl_texture_object *texObj = info->texObj;

-   const GLuint level = info->level, face = info->face;

-

-   /* If this is a user-created FBO */

-   if (fb->Name) {

-      GLuint i;

-      /* check if any of the FBO's attachments point to 'texObj' */

-      for (i = 0; i < BUFFER_COUNT; i++) {

-         struct gl_renderbuffer_attachment *att = fb->Attachment + i;

-         if (att->Type == GL_TEXTURE &&

-             att->Texture == texObj &&

-             att->TextureLevel == level &&

-             att->CubeMapFace == face) {

-            ASSERT(att->Texture->Image[att->CubeMapFace][att->TextureLevel]);

-            /* Tell driver about the new renderbuffer texture */

-            ctx->Driver.RenderTexture(ctx, ctx->DrawBuffer, att);

-            /* Mark fb status as indeterminate to force re-validation */

-            fb->_Status = 0;

-         }

-      }

-   }

-}

-

-

-/**

- * When a texture image is specified we have to check if it's bound to

- * any framebuffer objects (render to texture) in order to detect changes

- * in size or format since that effects FBO completeness.

- * Any FBOs rendering into the texture must be re-validated.

- */

-static void

-update_fbo_texture(struct gl_context *ctx, struct gl_texture_object *texObj,

-                   GLuint face, GLuint level)

-{

-   /* Only check this texture if it's been marked as RenderToTexture */

-   if (texObj->_RenderToTexture) {

-      struct cb_info info;

-      info.ctx = ctx;

-      info.texObj = texObj;

-      info.level = level;

-      info.face = face;

-      _mesa_HashWalk(ctx->Shared->FrameBuffers, check_rtt_cb, &info);

-   }

-}

-

-

-/**

- * If the texture object's GenerateMipmap flag is set and we've

- * changed the texture base level image, regenerate the rest of the

- * mipmap levels now.

- */

-static INLINE void

-check_gen_mipmap(struct gl_context *ctx, GLenum target,

-                 struct gl_texture_object *texObj, GLint level)

-{

-   ASSERT(target != GL_TEXTURE_CUBE_MAP);

-   if (texObj->GenerateMipmap &&

-       level == texObj->BaseLevel &&

-       level < texObj->MaxLevel) {

-      ASSERT(ctx->Driver.GenerateMipmap);

-      ctx->Driver.GenerateMipmap(ctx, target, texObj);

-   }

-}

-

-

-/** Debug helper: override the user-requested internal format */

-static GLenum

-override_internal_format(GLenum internalFormat, GLint width, GLint height)

-{

-#if 0

-   if (internalFormat == GL_RGBA16F_ARB ||

-       internalFormat == GL_RGBA32F_ARB) {

-      printf("Convert rgba float tex to int %d x %d\n", width, height);

-      return GL_RGBA;

-   }

-   else if (internalFormat == GL_RGB16F_ARB ||

-            internalFormat == GL_RGB32F_ARB) {

-      printf("Convert rgb float tex to int %d x %d\n", width, height);

-      return GL_RGB;

-   }

-   else if (internalFormat == GL_LUMINANCE_ALPHA16F_ARB ||

-            internalFormat == GL_LUMINANCE_ALPHA32F_ARB) {

-      printf("Convert luminance float tex to int %d x %d\n", width, height);

-      return GL_LUMINANCE_ALPHA;

-   }

-   else if (internalFormat == GL_LUMINANCE16F_ARB ||

-            internalFormat == GL_LUMINANCE32F_ARB) {

-      printf("Convert luminance float tex to int %d x %d\n", width, height);

-      return GL_LUMINANCE;

-   }

-   else if (internalFormat == GL_ALPHA16F_ARB ||

-            internalFormat == GL_ALPHA32F_ARB) {

-      printf("Convert luminance float tex to int %d x %d\n", width, height);

-      return GL_ALPHA;

-   }

-   /*

-   else if (internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) {

-      internalFormat = GL_RGBA;

-   }

-   */

-   else {

-      return internalFormat;

-   }

-#else

-   return internalFormat;

-#endif

-}

-

-

-/**

- * Choose the actual hardware format for a texture image.

- * Try to use the same format as the previous image level when possible.

- * Otherwise, ask the driver for the best format.

- * It's important to try to choose a consistant format for all levels

- * for efficient texture memory layout/allocation.  In particular, this

- * comes up during automatic mipmap generation.

- */

-gl_format

-_mesa_choose_texture_format(struct gl_context *ctx,

-                            struct gl_texture_object *texObj,

-                            GLenum target, GLint level,

-                            GLenum internalFormat, GLenum format, GLenum type)

-{

-   gl_format f;

-

-   /* see if we've already chosen a format for the previous level */

-   if (level > 0) {

-      struct gl_texture_image *prevImage =

-	 _mesa_select_tex_image(ctx, texObj, target, level - 1);

-      /* See if the prev level is defined and has an internal format which

-       * matches the new internal format.

-       */

-      if (prevImage &&

-          prevImage->Width > 0 &&

-          prevImage->InternalFormat == internalFormat) {

-         /* use the same format */

-         ASSERT(prevImage->TexFormat != MESA_FORMAT_NONE);

-         return prevImage->TexFormat;

-      }

-   }

-

-   /* choose format from scratch */

-   f = ctx->Driver.ChooseTextureFormat(ctx, internalFormat, format, type);

-   ASSERT(f != MESA_FORMAT_NONE);

-   return f;

-}

-

-

-/**

- * Common code to implement all the glTexImage1D/2D/3D functions.

- */

-static void

-teximage(struct gl_context *ctx, GLuint dims,

-         GLenum target, GLint level, GLint internalFormat,

-         GLsizei width, GLsizei height, GLsizei depth,

-         GLint border, GLenum format, GLenum type,

-         const GLvoid *pixels)

-{

-   GLboolean error;

-

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))

-      _mesa_debug(ctx, "glTexImage%uD %s %d %s %d %d %d %d %s %s %p\n",

-                  dims,

-                  _mesa_lookup_enum_by_nr(target), level,

-                  _mesa_lookup_enum_by_nr(internalFormat),

-                  width, height, depth, border,

-                  _mesa_lookup_enum_by_nr(format),

-                  _mesa_lookup_enum_by_nr(type), pixels);

-

-   internalFormat = override_internal_format(internalFormat, width, height);

-

-   /* target error checking */

-   if (!legal_teximage_target(ctx, dims, target)) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage%uD(target=%s)",

-                  dims, _mesa_lookup_enum_by_nr(target));

-      return;

-   }

-

-   /* general error checking */

-   error = texture_error_check(ctx, dims, target, level, internalFormat,

-                               format, type, width, height, depth, border);

-

-   if (_mesa_is_proxy_texture(target)) {

-      /* Proxy texture: just clear or set state depending on error checking */

-      struct gl_texture_image *texImage =

-         _mesa_get_proxy_tex_image(ctx, target, level);

-

-      if (error) {

-         /* when error, clear all proxy texture image parameters */

-         if (texImage)

-            clear_teximage_fields(texImage);

-      }

-      else {

-         /* no error, set the tex image parameters */

-         struct gl_texture_object *texObj =

-            _mesa_get_current_tex_object(ctx, target);

-         gl_format texFormat = _mesa_choose_texture_format(ctx, texObj,

-                                                           target, level,

-                                                           internalFormat,

-                                                           format, type);

-

-         if (legal_texture_size(ctx, texFormat, width, height, depth)) {

-            _mesa_init_teximage_fields(ctx, target, texImage, width, height,

-                                       depth, border, internalFormat,

-                                       texFormat);

-         }

-         else if (texImage) {

-            clear_teximage_fields(texImage);

-         }

-      }

-   }

-   else {

-      /* non-proxy target */

-      const GLuint face = _mesa_tex_target_to_face(target);

-      struct gl_texture_object *texObj;

-      struct gl_texture_image *texImage;

-

-      if (error) {

-         return;   /* error was recorded */

-      }

-

-      if (ctx->NewState & _MESA_NEW_TRANSFER_STATE)

-	 _mesa_update_state(ctx);

-

-      texObj = _mesa_get_current_tex_object(ctx, target);

-

-      _mesa_lock_texture(ctx, texObj);

-      {

-	 texImage = _mesa_get_tex_image(ctx, texObj, target, level);

-

-	 if (!texImage) {

-	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);

-	 }

-         else {

-            gl_format texFormat;

-

-            if (texImage->Data) {

-               ctx->Driver.FreeTexImageData( ctx, texImage );

-            }

-

-            ASSERT(texImage->Data == NULL);

-            texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,

-                                                    internalFormat, format,

-                                                    type);

-

-            if (legal_texture_size(ctx, texFormat, width, height, depth)) {

-               _mesa_init_teximage_fields(ctx, target, texImage,

-                                          width, height, depth,

-                                          border, internalFormat, texFormat);

-

-               /* Give the texture to the driver.  <pixels> may be null. */

-               ASSERT(ctx->Driver.TexImage3D);

-               switch (dims) {

-               case 1:

-                  ctx->Driver.TexImage1D(ctx, target, level, internalFormat,

-                                         width, border, format,

-                                         type, pixels, &ctx->Unpack, texObj,

-                                         texImage);

-                  break;

-               case 2:

-                  ctx->Driver.TexImage2D(ctx, target, level, internalFormat,

-                                         width, height, border, format,

-                                         type, pixels, &ctx->Unpack, texObj,

-                                         texImage);

-                  break;

-               case 3:

-                  ctx->Driver.TexImage3D(ctx, target, level, internalFormat,

-                                         width, height, depth, border, format,

-                                         type, pixels, &ctx->Unpack, texObj,

-                                         texImage);

-                  break;

-               default:

-                  _mesa_problem(ctx, "invalid dims=%u in teximage()", dims);

-               }

-

-               check_gen_mipmap(ctx, target, texObj, level);

-

-               update_fbo_texture(ctx, texObj, face, level);

-

-               /* state update */

-               texObj->_Complete = GL_FALSE;

-               ctx->NewState |= _NEW_TEXTURE;

-            }

-            else {

-               _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);

-            }

-         }

-      }

-      _mesa_unlock_texture(ctx, texObj);

-   }

-}

-

-

-/*

- * Called from the API.  Note that width includes the border.

- */

-void GLAPIENTRY

-_mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat,

-                  GLsizei width, GLint border, GLenum format,

-                  GLenum type, const GLvoid *pixels )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   teximage(ctx, 1, target, level, internalFormat, width, 1, 1,

-            border, format, type, pixels);

-}

-

-

-void GLAPIENTRY

-_mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat,

-                  GLsizei width, GLsizei height, GLint border,

-                  GLenum format, GLenum type,

-                  const GLvoid *pixels )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   teximage(ctx, 2, target, level, internalFormat, width, height, 1,

-            border, format, type, pixels);

-}

-

-

-/*

- * Called by the API or display list executor.

- * Note that width and height include the border.

- */

-void GLAPIENTRY

-_mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat,

-                  GLsizei width, GLsizei height, GLsizei depth,

-                  GLint border, GLenum format, GLenum type,

-                  const GLvoid *pixels )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   teximage(ctx, 3, target, level, internalFormat, width, height, depth,

-            border, format, type, pixels);

-}

-

-

-void GLAPIENTRY

-_mesa_TexImage3DEXT( GLenum target, GLint level, GLenum internalFormat,

-                     GLsizei width, GLsizei height, GLsizei depth,

-                     GLint border, GLenum format, GLenum type,

-                     const GLvoid *pixels )

-{

-   _mesa_TexImage3D(target, level, (GLint) internalFormat, width, height,

-                    depth, border, format, type, pixels);

-}

-

-

-#if FEATURE_OES_EGL_image

-void GLAPIENTRY

-_mesa_EGLImageTargetTexture2DOES (GLenum target, GLeglImageOES image)

-{

-   struct gl_texture_object *texObj;

-   struct gl_texture_image *texImage;

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (!ctx->Extensions.OES_EGL_image) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glEGLImageTargetTexture2DOES(unsupported)");

-      return;

-   }

-

-   if (target != GL_TEXTURE_2D) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-		  "glEGLImageTargetTexture2D(target=%d)", target);

-      return;

-   }

-

-   if (ctx->NewState & _MESA_NEW_TRANSFER_STATE)

-      _mesa_update_state(ctx);

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-   _mesa_lock_texture(ctx, texObj);

-

-   texImage = _mesa_get_tex_image(ctx, texObj, target, 0);

-   if (!texImage) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glEGLImageTargetTexture2D");

-   } else {

-      if (texImage->Data)

-	 ctx->Driver.FreeTexImageData( ctx, texImage );

-

-      ASSERT(texImage->Data == NULL);

-      ctx->Driver.EGLImageTargetTexture2D(ctx, target,

-					  texObj, texImage, image);

-

-      /* state update */

-      texObj->_Complete = GL_FALSE;

-      ctx->NewState |= _NEW_TEXTURE;

-   }

-   _mesa_unlock_texture(ctx, texObj);

-

-}

-#endif

-

-

-

-/**

- * Implement all the glTexSubImage1/2/3D() functions.

- */

-static void

-texsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,

-            GLint xoffset, GLint yoffset, GLint zoffset,

-            GLsizei width, GLsizei height, GLsizei depth,

-            GLenum format, GLenum type, const GLvoid *pixels )

-{

-   struct gl_texture_object *texObj;

-   struct gl_texture_image *texImage;

-

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))

-      _mesa_debug(ctx, "glTexSubImage%uD %s %d %d %d %d %d %d %d %s %s %p\n",

-                  dims,

-                  _mesa_lookup_enum_by_nr(target), level,

-                  xoffset, yoffset, zoffset, width, height, depth,

-                  _mesa_lookup_enum_by_nr(format),

-                  _mesa_lookup_enum_by_nr(type), pixels);

-

-   /* check target (proxies not allowed) */

-   if (!legal_texsubimage_target(ctx, dims, target)) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage%uD(target=%s)",

-                  dims, _mesa_lookup_enum_by_nr(target));

-      return;

-   }       

-

-   if (ctx->NewState & _MESA_NEW_TRANSFER_STATE)

-      _mesa_update_state(ctx);

-

-   if (subtexture_error_check(ctx, dims, target, level, xoffset, yoffset, zoffset,

-                              width, height, depth, format, type)) {

-      return;   /* error was detected */

-   }

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-

-   _mesa_lock_texture(ctx, texObj);

-   {

-      texImage = _mesa_select_tex_image(ctx, texObj, target, level);

-

-      if (subtexture_error_check2(ctx, dims, target, level,

-                                  xoffset, yoffset, zoffset,

-				  width, height, depth,

-                                  format, type, texImage)) {

-         /* error was recorded */

-      }

-      else if (width > 0 && height > 0 && height > 0) {

-         /* If we have a border, offset=-1 is legal.  Bias by border width. */

-         switch (dims) {

-         case 3:

-            zoffset += texImage->Border;

-            /* fall-through */

-         case 2:

-            yoffset += texImage->Border;

-            /* fall-through */

-         case 1:

-            xoffset += texImage->Border;

-         }

-

-         switch (dims) {

-         case 1:

-            ctx->Driver.TexSubImage1D(ctx, target, level,

-                                      xoffset, width,

-                                      format, type, pixels,

-                                      &ctx->Unpack, texObj, texImage );

-            break;

-         case 2:

-            ctx->Driver.TexSubImage2D(ctx, target, level,

-                                      xoffset, yoffset, width, height,

-                                      format, type, pixels,

-                                      &ctx->Unpack, texObj, texImage );

-            break;

-         case 3:

-            ctx->Driver.TexSubImage3D(ctx, target, level,

-                                      xoffset, yoffset, zoffset,

-                                      width, height, depth,

-                                      format, type, pixels,

-                                      &ctx->Unpack, texObj, texImage );

-            break;

-         default:

-            _mesa_problem(ctx, "unexpected dims in subteximage()");

-         }

-

-         check_gen_mipmap(ctx, target, texObj, level);

-

-         ctx->NewState |= _NEW_TEXTURE;

-      }

-   }

-   _mesa_unlock_texture(ctx, texObj);

-}

-

-

-void GLAPIENTRY

-_mesa_TexSubImage1D( GLenum target, GLint level,

-                     GLint xoffset, GLsizei width,

-                     GLenum format, GLenum type,

-                     const GLvoid *pixels )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   texsubimage(ctx, 1, target, level,

-               xoffset, 0, 0,

-               width, 1, 1,

-               format, type, pixels);

-}

-

-

-void GLAPIENTRY

-_mesa_TexSubImage2D( GLenum target, GLint level,

-                     GLint xoffset, GLint yoffset,

-                     GLsizei width, GLsizei height,

-                     GLenum format, GLenum type,

-                     const GLvoid *pixels )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   texsubimage(ctx, 2, target, level,

-               xoffset, yoffset, 0,

-               width, height, 1,

-               format, type, pixels);

-}

-

-

-

-void GLAPIENTRY

-_mesa_TexSubImage3D( GLenum target, GLint level,

-                     GLint xoffset, GLint yoffset, GLint zoffset,

-                     GLsizei width, GLsizei height, GLsizei depth,

-                     GLenum format, GLenum type,

-                     const GLvoid *pixels )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   texsubimage(ctx, 3, target, level,

-               xoffset, yoffset, zoffset,

-               width, height, depth,

-               format, type, pixels);

-}

-

-

-

-/**

- * Implement the glCopyTexImage1/2D() functions.

- */

-static void

-copyteximage(struct gl_context *ctx, GLuint dims,

-             GLenum target, GLint level, GLenum internalFormat,

-             GLint x, GLint y, GLsizei width, GLsizei height, GLint border )

-{

-   struct gl_texture_object *texObj;

-   struct gl_texture_image *texImage;

-   const GLuint face = _mesa_tex_target_to_face(target);

-

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))

-      _mesa_debug(ctx, "glCopyTexImage%uD %s %d %s %d %d %d %d %d\n",

-                  dims,

-                  _mesa_lookup_enum_by_nr(target), level,

-                  _mesa_lookup_enum_by_nr(internalFormat),

-                  x, y, width, height, border);

-

-   if (ctx->NewState & NEW_COPY_TEX_STATE)

-      _mesa_update_state(ctx);

-

-   if (copytexture_error_check(ctx, dims, target, level, internalFormat,

-                               width, height, border))

-      return;

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-

-   _mesa_lock_texture(ctx, texObj);

-   {

-      texImage = _mesa_get_tex_image(ctx, texObj, target, level);

-

-      if (!texImage) {

-	 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);

-      }

-      else {

-         gl_format texFormat;

-

-         if (texImage->Data) {

-            ctx->Driver.FreeTexImageData( ctx, texImage );

-         }

-

-         ASSERT(texImage->Data == NULL);

-

-         texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,

-                                                 internalFormat, GL_NONE,

-                                                 GL_NONE);

-

-         if (legal_texture_size(ctx, texFormat, width, height, 1)) {

-            _mesa_init_teximage_fields(ctx, target, texImage, width, height, 1,

-                                       border, internalFormat, texFormat);

-

-            ASSERT(ctx->Driver.CopyTexImage2D);

-            if (dims == 1)

-               ctx->Driver.CopyTexImage1D(ctx, target, level, internalFormat,

-                                          x, y, width, border);

-            else

-               ctx->Driver.CopyTexImage2D(ctx, target, level, internalFormat,

-                                          x, y, width, height, border);

-

-            check_gen_mipmap(ctx, target, texObj, level);

-

-            update_fbo_texture(ctx, texObj, face, level);

-

-            /* state update */

-            texObj->_Complete = GL_FALSE;

-            ctx->NewState |= _NEW_TEXTURE;

-         }

-         else {

-            _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);

-         }

-      }

-   }

-   _mesa_unlock_texture(ctx, texObj);

-}

-

-

-

-void GLAPIENTRY

-_mesa_CopyTexImage1D( GLenum target, GLint level,

-                      GLenum internalFormat,

-                      GLint x, GLint y,

-                      GLsizei width, GLint border )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   copyteximage(ctx, 1, target, level, internalFormat, x, y, width, 1, border);

-}

-

-

-

-void GLAPIENTRY

-_mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat,

-                      GLint x, GLint y, GLsizei width, GLsizei height,

-                      GLint border )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   copyteximage(ctx, 2, target, level, internalFormat,

-                x, y, width, height, border);

-}

-

-

-

-/**

- * Implementation for glCopyTexSubImage1/2/3D() functions.

- */

-static void

-copytexsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,

-                GLint xoffset, GLint yoffset, GLint zoffset,

-                GLint x, GLint y, GLsizei width, GLsizei height)

-{

-   struct gl_texture_object *texObj;

-   struct gl_texture_image *texImage;

-

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))

-      _mesa_debug(ctx, "glCopyTexSubImage%uD %s %d %d %d %d %d %d %d %d\n",

-                  dims,

-                  _mesa_lookup_enum_by_nr(target),

-                  level, xoffset, yoffset, zoffset, x, y, width, height);

-

-   if (ctx->NewState & NEW_COPY_TEX_STATE)

-      _mesa_update_state(ctx);

-

-   if (copytexsubimage_error_check1(ctx, dims, target, level))

-      return;

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-

-   _mesa_lock_texture(ctx, texObj);

-   {

-      texImage = _mesa_select_tex_image(ctx, texObj, target, level);

-

-      if (copytexsubimage_error_check2(ctx, dims, target, level, xoffset, yoffset,

-				       zoffset, width, height, texImage)) {

-         /* error was recored */

-      }

-      else {

-         /* If we have a border, offset=-1 is legal.  Bias by border width. */

-         switch (dims) {

-         case 3:

-            zoffset += texImage->Border;

-            /* fall-through */

-         case 2:

-            yoffset += texImage->Border;

-            /* fall-through */

-         case 1:

-            xoffset += texImage->Border;

-         }

-

-         if (_mesa_clip_copytexsubimage(ctx, &xoffset, &yoffset, &x, &y,

-                                        &width, &height)) {

-            switch (dims) {

-            case 1:

-               ctx->Driver.CopyTexSubImage1D(ctx, target, level,

-                                             xoffset, x, y, width);

-               break;

-            case 2:

-               ctx->Driver.CopyTexSubImage2D(ctx, target, level,

-                                             xoffset, yoffset,

-                                             x, y, width, height);

-               break;

-            case 3:

-               ctx->Driver.CopyTexSubImage3D(ctx, target, level,

-                                             xoffset, yoffset, zoffset,

-                                             x, y, width, height);

-               break;

-            default:

-               _mesa_problem(ctx, "bad dims in copytexsubimage()");

-            }

-

-            check_gen_mipmap(ctx, target, texObj, level);

-

-            ctx->NewState |= _NEW_TEXTURE;

-         }

-      }

-   }

-   _mesa_unlock_texture(ctx, texObj);

-}

-

-

-void GLAPIENTRY

-_mesa_CopyTexSubImage1D( GLenum target, GLint level,

-                         GLint xoffset, GLint x, GLint y, GLsizei width )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   copytexsubimage(ctx, 1, target, level, xoffset, 0, 0, x, y, width, 1);

-}

-

-

-

-void GLAPIENTRY

-_mesa_CopyTexSubImage2D( GLenum target, GLint level,

-                         GLint xoffset, GLint yoffset,

-                         GLint x, GLint y, GLsizei width, GLsizei height )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   copytexsubimage(ctx, 2, target, level, xoffset, yoffset, 0, x, y,

-                   width, height);

-}

-

-

-

-void GLAPIENTRY

-_mesa_CopyTexSubImage3D( GLenum target, GLint level,

-                         GLint xoffset, GLint yoffset, GLint zoffset,

-                         GLint x, GLint y, GLsizei width, GLsizei height )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   copytexsubimage(ctx, 3, target, level, xoffset, yoffset, zoffset,

-                   x, y, width, height);

-}

-

-

-

-

-/**********************************************************************/

-/******                   Compressed Textures                    ******/

-/**********************************************************************/

-

-

-/**

- * Return expected size of a compressed texture.

- */

-static GLuint

-compressed_tex_size(GLsizei width, GLsizei height, GLsizei depth,

-                    GLenum glformat)

-{

-   gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);

-   return _mesa_format_image_size(mesaFormat, width, height, depth);

-}

-

-

-/*

- * Return compressed texture block size, in pixels.

- */

-static void

-get_compressed_block_size(GLenum glformat, GLuint *bw, GLuint *bh)

-{

-   gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);

-   _mesa_get_format_block_size(mesaFormat, bw, bh);

-}

-

-

-/**

- * Error checking for glCompressedTexImage[123]D().

- * \return error code or GL_NO_ERROR.

- */

-static GLenum

-compressed_texture_error_check(struct gl_context *ctx, GLint dimensions,

-                               GLenum target, GLint level,

-                               GLenum internalFormat, GLsizei width,

-                               GLsizei height, GLsizei depth, GLint border,

-                               GLsizei imageSize)

-{

-   const GLenum proxyTarget = get_proxy_target(target);

-   const GLint maxLevels = _mesa_max_texture_levels(ctx, target);

-   GLint expectedSize;

-

-   /* check level */

-   if (level < 0 || level >= maxLevels)

-      return GL_INVALID_VALUE;

-

-   if (!target_can_be_compressed(ctx, target, internalFormat)) {

-      return GL_INVALID_ENUM;

-   }

-

-   /* This will detect any invalid internalFormat value */

-   if (!_mesa_is_compressed_format(ctx, internalFormat))

-      return GL_INVALID_ENUM;

-

-   /* This should really never fail */

-   if (_mesa_base_tex_format(ctx, internalFormat) < 0)

-      return GL_INVALID_ENUM;

-

-   /* No compressed formats support borders at this time */

-   if (border != 0)

-      return GL_INVALID_VALUE;

-

-   /* For cube map, width must equal height */

-   if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&

-       target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB && width != height)

-      return GL_INVALID_VALUE;

-

-   /* check image size against compression block size */

-   {

-      gl_format texFormat =

-         ctx->Driver.ChooseTextureFormat(ctx, internalFormat,

-                                         GL_NONE, GL_NONE);

-      GLuint bw, bh;

-

-      _mesa_get_format_block_size(texFormat, &bw, &bh);

-      if ((width > bw && width % bw > 0) ||

-          (height > bh && height % bh > 0)) {

-         /*

-          * Per GL_ARB_texture_compression:  GL_INVALID_OPERATION is

-          * generated [...] if any parameter combinations are not

-          * supported by the specific compressed internal format. 

-          */

-         return GL_INVALID_OPERATION;

-      }

-   }

-

-   /* check image sizes */

-   if (!ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,

-                                      internalFormat, GL_NONE, GL_NONE,

-                                      width, height, depth, border)) {

-      /* See error comment above */

-      return GL_INVALID_OPERATION;

-   }

-

-   /* check image size in bytes */

-   expectedSize = compressed_tex_size(width, height, depth, internalFormat);

-   if (expectedSize != imageSize) {

-      /* Per GL_ARB_texture_compression:  GL_INVALID_VALUE is generated [...]

-       * if <imageSize> is not consistent with the format, dimensions, and

-       * contents of the specified image.

-       */

-      return GL_INVALID_VALUE;

-   }

-

-   return GL_NO_ERROR;

-}

-

-

-/**

- * Error checking for glCompressedTexSubImage[123]D().

- * \warning  There are some bad assumptions here about the size of compressed

- *           texture tiles (multiple of 4) used to test the validity of the

- *           offset and size parameters.

- * \return error code or GL_NO_ERROR.

- */

-static GLenum

-compressed_subtexture_error_check(struct gl_context *ctx, GLint dimensions,

-                                  GLenum target, GLint level,

-                                  GLint xoffset, GLint yoffset, GLint zoffset,

-                                  GLsizei width, GLsizei height, GLsizei depth,

-                                  GLenum format, GLsizei imageSize)

-{

-   GLint expectedSize, maxLevels = 0, maxTextureSize;

-   GLuint bw, bh;

-   (void) zoffset;

-

-   if (dimensions == 1) {

-      /* 1D compressed textures not allowed */

-      return GL_INVALID_ENUM;

-   }

-   else if (dimensions == 2) {

-      if (target == GL_PROXY_TEXTURE_2D) {

-         maxLevels = ctx->Const.MaxTextureLevels;

-      }

-      else if (target == GL_TEXTURE_2D) {

-         maxLevels = ctx->Const.MaxTextureLevels;

-      }

-      else if (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {

-         if (!ctx->Extensions.ARB_texture_cube_map)

-            return GL_INVALID_ENUM; /*target*/

-         maxLevels = ctx->Const.MaxCubeTextureLevels;

-      }

-      else if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&

-               target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) {

-         if (!ctx->Extensions.ARB_texture_cube_map)

-            return GL_INVALID_ENUM; /*target*/

-         maxLevels = ctx->Const.MaxCubeTextureLevels;

-      }

-      else {

-         return GL_INVALID_ENUM; /*target*/

-      }

-   }

-   else if (dimensions == 3) {

-      /* 3D compressed textures not allowed */

-      return GL_INVALID_ENUM;

-   }

-

-   maxTextureSize = 1 << (maxLevels - 1);

-

-   /* this will catch any invalid compressed format token */

-   if (!_mesa_is_compressed_format(ctx, format))

-      return GL_INVALID_ENUM;

-

-   if (width < 1 || width > maxTextureSize)

-      return GL_INVALID_VALUE;

-

-   if ((height < 1 || height > maxTextureSize)

-       && dimensions > 1)

-      return GL_INVALID_VALUE;

-

-   if (level < 0 || level >= maxLevels)

-      return GL_INVALID_VALUE;

-

-   /*

-    * do checks which depend on compression block size

-    */

-   get_compressed_block_size(format, &bw, &bh);

-

-   if ((xoffset % bw != 0) || (yoffset % bh != 0))

-      return GL_INVALID_VALUE;

-

-   if ((width % bw != 0) && width != 2 && width != 1)

-      return GL_INVALID_VALUE;

-

-   if ((height % bh != 0) && height != 2 && height != 1)

-      return GL_INVALID_VALUE;

-

-   expectedSize = compressed_tex_size(width, height, depth, format);

-   if (expectedSize != imageSize)

-      return GL_INVALID_VALUE;

-

-   return GL_NO_ERROR;

-}

-

-

-/**

- * Do second part of glCompressedTexSubImage error checking.

- * \return GL_TRUE if error found, GL_FALSE otherwise.

- */

-static GLboolean

-compressed_subtexture_error_check2(struct gl_context *ctx, GLuint dims,

-                                   GLsizei width, GLsizei height,

-                                   GLsizei depth, GLenum format,

-                                   struct gl_texture_image *texImage)

-{

-

-   if ((GLint) format != texImage->InternalFormat) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glCompressedTexSubImage%uD(format=0x%x)", dims, format);

-      return GL_TRUE;

-   }

-

-   if (((width == 1 || width == 2) &&

-        width != (GLsizei) texImage->Width) ||

-       (width > (GLsizei) texImage->Width)) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glCompressedTexSubImage%uD(width=%d)", dims, width);

-      return GL_TRUE;

-   }

-

-   if (dims >= 2) {

-      if (((height == 1 || height == 2) &&

-           height != (GLsizei) texImage->Height) ||

-          (height > (GLsizei) texImage->Height)) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glCompressedTexSubImage%uD(height=%d)", dims, height);

-         return GL_TRUE;

-      }

-   }

-

-   if (dims >= 3) {

-      if (((depth == 1 || depth == 2) &&

-           depth != (GLsizei) texImage->Depth) ||

-          (depth > (GLsizei) texImage->Depth)) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glCompressedTexSubImage%uD(depth=%d)", dims, depth);

-         return GL_TRUE;

-      }

-   }

-

-   return GL_FALSE;

-}

-

-

-/**

- * Implementation of the glCompressedTexImage1/2/3D() functions.

- */

-static void

-compressedteximage(struct gl_context *ctx, GLuint dims,

-                   GLenum target, GLint level,

-                   GLenum internalFormat, GLsizei width,

-                   GLsizei height, GLsizei depth, GLint border,

-                   GLsizei imageSize, const GLvoid *data)

-{

-   GLenum error;

-

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))

-      _mesa_debug(ctx,

-                  "glCompressedTexImage%uDARB %s %d %s %d %d %d %d %d %p\n",

-                  dims,

-                  _mesa_lookup_enum_by_nr(target), level,

-                  _mesa_lookup_enum_by_nr(internalFormat),

-                  width, height, depth, border, imageSize, data);

-

-   /* check target */

-   if (!legal_teximage_target(ctx, dims, target)) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage%uD(target=%s)",

-                  dims, _mesa_lookup_enum_by_nr(target));

-      return;

-   }

-

-   error = compressed_texture_error_check(ctx, dims, target, level,

-                                          internalFormat, width, height, depth,

-                                          border, imageSize);

-

-#if FEATURE_ES

-   /* XXX this is kind of a hack */

-   if (error) {

-      _mesa_error(ctx, error, "glTexImage2D");

-      return;

-   }

-

-   if (dims == 2) {

-      switch (internalFormat) {

-      case GL_PALETTE4_RGB8_OES:

-      case GL_PALETTE4_RGBA8_OES:

-      case GL_PALETTE4_R5_G6_B5_OES:

-      case GL_PALETTE4_RGBA4_OES:

-      case GL_PALETTE4_RGB5_A1_OES:

-      case GL_PALETTE8_RGB8_OES:

-      case GL_PALETTE8_RGBA8_OES:

-      case GL_PALETTE8_R5_G6_B5_OES:

-      case GL_PALETTE8_RGBA4_OES:

-      case GL_PALETTE8_RGB5_A1_OES:

-         _mesa_cpal_compressed_teximage2d(target, level, internalFormat,

-                                          width, height, imageSize, data);

-         return;

-      }

-   }

-#endif

-

-   if (_mesa_is_proxy_texture(target)) {

-      /* Proxy texture: just check for errors and update proxy state */

-      struct gl_texture_image *texImage;

-

-      if (!error) {

-         struct gl_texture_object *texObj =

-            _mesa_get_current_tex_object(ctx, target);

-         gl_format texFormat =

-            _mesa_choose_texture_format(ctx, texObj, target, level,

-                                        internalFormat, GL_NONE, GL_NONE);

-         if (!legal_texture_size(ctx, texFormat, width, height, depth)) {

-            error = GL_OUT_OF_MEMORY;

-         }

-      }

-

-      texImage = _mesa_get_proxy_tex_image(ctx, target, level);

-      if (texImage) {

-         if (error) {

-            /* if error, clear all proxy texture image parameters */

-            clear_teximage_fields(texImage);

-         }

-         else {

-            /* no error: store the teximage parameters */

-            _mesa_init_teximage_fields(ctx, target, texImage, width, height,

-                                       depth, border, internalFormat,

-                                       MESA_FORMAT_NONE);

-         }

-      }

-   }

-   else {

-      /* non-proxy target */

-      struct gl_texture_object *texObj;

-      struct gl_texture_image *texImage;

-

-      if (error) {

-         _mesa_error(ctx, error, "glCompressedTexImage%uD", dims);

-         return;

-      }

-

-      texObj = _mesa_get_current_tex_object(ctx, target);

-

-      _mesa_lock_texture(ctx, texObj);

-      {

-	 texImage = _mesa_get_tex_image(ctx, texObj, target, level);

-	 if (!texImage) {

-	    _mesa_error(ctx, GL_OUT_OF_MEMORY,

-                        "glCompressedTexImage%uD", dims);

-	 }

-         else {

-            gl_format texFormat;

-

-            if (texImage->Data) {

-               ctx->Driver.FreeTexImageData( ctx, texImage );

-            }

-            ASSERT(texImage->Data == NULL);

-

-            texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,

-                                                    internalFormat, GL_NONE,

-                                                    GL_NONE);

-

-            if (legal_texture_size(ctx, texFormat, width, height, depth)) {

-               _mesa_init_teximage_fields(ctx, target, texImage,

-                                          width, height, depth,

-                                          border, internalFormat, texFormat);

-

-               switch (dims) {

-               case 1:

-                  ASSERT(ctx->Driver.CompressedTexImage1D);

-                  ctx->Driver.CompressedTexImage1D(ctx, target, level,

-                                                   internalFormat,

-                                                   width,

-                                                   border, imageSize, data,

-                                                   texObj, texImage);

-                  break;

-               case 2:

-                  ASSERT(ctx->Driver.CompressedTexImage2D);

-                  ctx->Driver.CompressedTexImage2D(ctx, target, level,

-                                                   internalFormat,

-                                                   width, height,

-                                                   border, imageSize, data,

-                                                   texObj, texImage);

-                  break;

-               case 3:

-                  ASSERT(ctx->Driver.CompressedTexImage3D);

-                  ctx->Driver.CompressedTexImage3D(ctx, target, level,

-                                                   internalFormat,

-                                                   width, height, depth,

-                                                   border, imageSize, data,

-                                                   texObj, texImage);

-                  break;

-               default:

-                  _mesa_problem(ctx, "bad dims in compressedteximage");

-               }

-

-               check_gen_mipmap(ctx, target, texObj, level);

-

-               /* state update */

-               texObj->_Complete = GL_FALSE;

-               ctx->NewState |= _NEW_TEXTURE;

-            }

-            else {

-               _mesa_error(ctx, GL_OUT_OF_MEMORY,

-                           "glCompressedTexImage%uD", dims);

-            }

-         }

-      }

-      _mesa_unlock_texture(ctx, texObj);

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_CompressedTexImage1DARB(GLenum target, GLint level,

-                              GLenum internalFormat, GLsizei width,

-                              GLint border, GLsizei imageSize,

-                              const GLvoid *data)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   compressedteximage(ctx, 1, target, level, internalFormat,

-                      width, 1, 1, border, imageSize, data);

-}

-

-

-void GLAPIENTRY

-_mesa_CompressedTexImage2DARB(GLenum target, GLint level,

-                              GLenum internalFormat, GLsizei width,

-                              GLsizei height, GLint border, GLsizei imageSize,

-                              const GLvoid *data)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   compressedteximage(ctx, 2, target, level, internalFormat,

-                      width, height, 1, border, imageSize, data);

-}

-

-

-void GLAPIENTRY

-_mesa_CompressedTexImage3DARB(GLenum target, GLint level,

-                              GLenum internalFormat, GLsizei width,

-                              GLsizei height, GLsizei depth, GLint border,

-                              GLsizei imageSize, const GLvoid *data)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   compressedteximage(ctx, 3, target, level, internalFormat,

-                      width, height, depth, border, imageSize, data);

-}

-

-

-/**

- * Common helper for glCompressedTexSubImage1/2/3D().

- */

-static void

-compressed_tex_sub_image(GLuint dims, GLenum target, GLint level,

-                         GLint xoffset, GLint yoffset, GLint zoffset,

-                         GLsizei width, GLsizei height, GLsizei depth,

-                         GLenum format, GLsizei imageSize, const GLvoid *data)

-{

-   struct gl_texture_object *texObj;

-   struct gl_texture_image *texImage;

-   GLenum error;

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

-

-   error = compressed_subtexture_error_check(ctx, dims, target, level,

-                                             xoffset, 0, 0, /* pos */

-                                             width, height, depth,   /* size */

-                                             format, imageSize);

-   if (error) {

-      _mesa_error(ctx, error, "glCompressedTexSubImage%uD", dims);

-      return;

-   }

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-

-   _mesa_lock_texture(ctx, texObj);

-   {

-      texImage = _mesa_select_tex_image(ctx, texObj, target, level);

-      assert(texImage);

-

-      if (compressed_subtexture_error_check2(ctx, dims, width, height, depth,

-                                             format, texImage)) {

-         /* error was recorded */

-      }

-      else if (width > 0 && height > 0 && depth > 0) {

-         switch (dims) {

-         case 1:

-            if (ctx->Driver.CompressedTexSubImage1D) {

-               ctx->Driver.CompressedTexSubImage1D(ctx, target, level,

-                                                   xoffset, width,

-                                                   format, imageSize, data,

-                                                   texObj, texImage);

-            }

-            break;

-         case 2:

-            if (ctx->Driver.CompressedTexSubImage2D) {

-               ctx->Driver.CompressedTexSubImage2D(ctx, target, level,

-                                                   xoffset, yoffset,

-                                                   width, height,

-                                                   format, imageSize, data,

-                                                   texObj, texImage);

-            }

-            break;

-         case 3:

-            if (ctx->Driver.CompressedTexSubImage3D) {

-               ctx->Driver.CompressedTexSubImage3D(ctx, target, level,

-                                                   xoffset, yoffset, zoffset,

-                                                   width, height, depth,

-                                                   format, imageSize, data,

-                                                   texObj, texImage);

-            }

-            break;

-         default:

-            ;

-         }

-

-         check_gen_mipmap(ctx, target, texObj, level);

-

-         ctx->NewState |= _NEW_TEXTURE;

-      }

-   }

-   _mesa_unlock_texture(ctx, texObj);

-}

-

-

-void GLAPIENTRY

-_mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset,

-                                 GLsizei width, GLenum format,

-                                 GLsizei imageSize, const GLvoid *data)

-{

-   compressed_tex_sub_image(1, target, level, xoffset, 0, 0, width, 1, 1,

-                            format, imageSize, data);

-}

-

-

-void GLAPIENTRY

-_mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset,

-                                 GLint yoffset, GLsizei width, GLsizei height,

-                                 GLenum format, GLsizei imageSize,

-                                 const GLvoid *data)

-{

-   compressed_tex_sub_image(2, target, level, xoffset, yoffset, 0,

-                            width, height, 1, format, imageSize, data);

-}

-

-

-void GLAPIENTRY

-_mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset,

-                                 GLint yoffset, GLint zoffset, GLsizei width,

-                                 GLsizei height, GLsizei depth, GLenum format,

-                                 GLsizei imageSize, const GLvoid *data)

-{

-   compressed_tex_sub_image(3, target, level, xoffset, yoffset, zoffset,

-                            width, height, depth, format, imageSize, data);

-}

+/*
+ * mesa 3-D graphics library
+ * Version:  7.6
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * \file teximage.c
+ * Texture image-related functions.
+ */
+
+
+#include "glheader.h"
+#include "bufferobj.h"
+#include "context.h"
+#include "enums.h"
+#include "fbobject.h"
+#include "framebuffer.h"
+#include "hash.h"
+#include "image.h"
+#include "imports.h"
+#include "macros.h"
+#include "mfeatures.h"
+#include "state.h"
+#include "texcompress.h"
+#include "texfetch.h"
+#include "teximage.h"
+#include "texstate.h"
+#include "texpal.h"
+#include "mtypes.h"
+
+
+/**
+ * State changes which we care about for glCopyTex[Sub]Image() calls.
+ * In particular, we care about pixel transfer state and buffer state
+ * (such as glReadBuffer to make sure we read from the right renderbuffer).
+ */
+#define NEW_COPY_TEX_STATE (_MESA_NEW_TRANSFER_STATE | \
+                            _NEW_BUFFERS | \
+                            _NEW_PIXEL)
+
+
+
+/**
+ * We allocate texture memory on 512-byte boundaries so we can use MMX/SSE
+ * elsewhere.
+ */
+void *
+_mesa_alloc_texmemory(GLsizei bytes)
+{
+   return _mesa_align_malloc(bytes, 512);
+}
+
+
+/**
+ * Free texture memory allocated with _mesa_alloc_texmemory()
+ */
+void
+_mesa_free_texmemory(void *m)
+{
+   _mesa_align_free(m);
+}
+
+
+/*
+ * Compute floor(log_base_2(n)).
+ * If n < 0 return -1.
+ */
+static int
+logbase2( int n )
+{
+   GLint i = 1;
+   GLint log2 = 0;
+
+   if (n < 0)
+      return -1;
+
+   if (n == 0)
+      return 0;
+
+   while ( n > i ) {
+      i *= 2;
+      log2++;
+   }
+   if (i != n) {
+      return log2 - 1;
+   }
+   else {
+      return log2;
+   }
+}
+
+
+
+/**
+ * Return the simple base format for a given internal texture format.
+ * For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA.
+ *
+ * \param ctx GL context.
+ * \param internalFormat the internal texture format token or 1, 2, 3, or 4.
+ *
+ * \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE,
+ * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum.
+ *
+ * This is the format which is used during texture application (i.e. the
+ * texture format and env mode determine the arithmetic used.
+ *
+ * XXX this could be static
+ */
+GLint
+_mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat )
+{
+   switch (internalFormat) {
+      case GL_ALPHA:
+      case GL_ALPHA4:
+      case GL_ALPHA8:
+      case GL_ALPHA12:
+      case GL_ALPHA16:
+         return GL_ALPHA;
+      case 1:
+      case GL_LUMINANCE:
+      case GL_LUMINANCE4:
+      case GL_LUMINANCE8:
+      case GL_LUMINANCE12:
+      case GL_LUMINANCE16:
+         return GL_LUMINANCE;
+      case 2:
+      case GL_LUMINANCE_ALPHA:
+      case GL_LUMINANCE4_ALPHA4:
+      case GL_LUMINANCE6_ALPHA2:
+      case GL_LUMINANCE8_ALPHA8:
+      case GL_LUMINANCE12_ALPHA4:
+      case GL_LUMINANCE12_ALPHA12:
+      case GL_LUMINANCE16_ALPHA16:
+         return GL_LUMINANCE_ALPHA;
+      case GL_INTENSITY:
+      case GL_INTENSITY4:
+      case GL_INTENSITY8:
+      case GL_INTENSITY12:
+      case GL_INTENSITY16:
+         return GL_INTENSITY;
+      case 3:
+      case GL_RGB:
+      case GL_R3_G3_B2:
+      case GL_RGB4:
+      case GL_RGB5:
+      case GL_RGB8:
+      case GL_RGB10:
+      case GL_RGB12:
+      case GL_RGB16:
+         return GL_RGB;
+      case 4:
+      case GL_RGBA:
+      case GL_RGBA2:
+      case GL_RGBA4:
+      case GL_RGB5_A1:
+      case GL_RGBA8:
+      case GL_RGB10_A2:
+      case GL_RGBA12:
+      case GL_RGBA16:
+         return GL_RGBA;
+      default:
+         ; /* fallthrough */
+   }
+
+   if (ctx->Extensions.EXT_texture_format_BGRA8888) {
+      switch (internalFormat) {
+         case GL_BGRA_EXT:
+            return GL_RGBA;
+         default:
+            ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.EXT_paletted_texture) {
+      switch (internalFormat) {
+         case GL_COLOR_INDEX:
+         case GL_COLOR_INDEX1_EXT:
+         case GL_COLOR_INDEX2_EXT:
+         case GL_COLOR_INDEX4_EXT:
+         case GL_COLOR_INDEX8_EXT:
+         case GL_COLOR_INDEX12_EXT:
+         case GL_COLOR_INDEX16_EXT:
+            return GL_COLOR_INDEX;
+         default:
+            ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.ARB_depth_texture) {
+      switch (internalFormat) {
+         case GL_DEPTH_COMPONENT:
+         case GL_DEPTH_COMPONENT16:
+         case GL_DEPTH_COMPONENT24:
+         case GL_DEPTH_COMPONENT32:
+            return GL_DEPTH_COMPONENT;
+         default:
+            ; /* fallthrough */
+      }
+   }
+
+   switch (internalFormat) {
+   case GL_COMPRESSED_ALPHA:
+      return GL_ALPHA;
+   case GL_COMPRESSED_LUMINANCE:
+      return GL_LUMINANCE;
+   case GL_COMPRESSED_LUMINANCE_ALPHA:
+      return GL_LUMINANCE_ALPHA;
+   case GL_COMPRESSED_INTENSITY:
+      return GL_INTENSITY;
+   case GL_COMPRESSED_RGB:
+      return GL_RGB;
+   case GL_COMPRESSED_RGBA:
+      return GL_RGBA;
+   default:
+      ; /* fallthrough */
+   }
+         
+   if (ctx->Extensions.TDFX_texture_compression_FXT1) {
+      switch (internalFormat) {
+         case GL_COMPRESSED_RGB_FXT1_3DFX:
+            return GL_RGB;
+         case GL_COMPRESSED_RGBA_FXT1_3DFX:
+            return GL_RGBA;
+         default:
+            ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.EXT_texture_compression_s3tc) {
+      switch (internalFormat) {
+         case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+            return GL_RGB;
+         case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
+         case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
+         case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
+            return GL_RGBA;
+         default:
+            ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.S3_s3tc) {
+      switch (internalFormat) {
+         case GL_RGB_S3TC:
+         case GL_RGB4_S3TC:
+            return GL_RGB;
+         case GL_RGBA_S3TC:
+         case GL_RGBA4_S3TC:
+            return GL_RGBA;
+         default:
+            ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.MESA_ycbcr_texture) {
+      if (internalFormat == GL_YCBCR_MESA)
+         return GL_YCBCR_MESA;
+   }
+
+   if (ctx->Extensions.ARB_texture_float) {
+      switch (internalFormat) {
+         case GL_ALPHA16F_ARB:
+         case GL_ALPHA32F_ARB:
+            return GL_ALPHA;
+         case GL_RGBA16F_ARB:
+         case GL_RGBA32F_ARB:
+            return GL_RGBA;
+         case GL_RGB16F_ARB:
+         case GL_RGB32F_ARB:
+            return GL_RGB;
+         case GL_INTENSITY16F_ARB:
+         case GL_INTENSITY32F_ARB:
+            return GL_INTENSITY;
+         case GL_LUMINANCE16F_ARB:
+         case GL_LUMINANCE32F_ARB:
+            return GL_LUMINANCE;
+         case GL_LUMINANCE_ALPHA16F_ARB:
+         case GL_LUMINANCE_ALPHA32F_ARB:
+            return GL_LUMINANCE_ALPHA;
+         default:
+            ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.ATI_envmap_bumpmap) {
+      switch (internalFormat) {
+         case GL_DUDV_ATI:
+         case GL_DU8DV8_ATI:
+            return GL_DUDV_ATI;
+         default:
+            ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.MESA_texture_signed_rgba) {
+      switch (internalFormat) {
+         case GL_RGBA_SNORM:
+         case GL_RGBA8_SNORM:
+            return GL_RGBA;
+         default:
+            ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.EXT_packed_depth_stencil) {
+      switch (internalFormat) {
+         case GL_DEPTH_STENCIL_EXT:
+         case GL_DEPTH24_STENCIL8_EXT:
+            return GL_DEPTH_STENCIL_EXT;
+         default:
+            ; /* fallthrough */
+      }
+   }
+
+#if FEATURE_EXT_texture_sRGB
+   if (ctx->Extensions.EXT_texture_sRGB) {
+      switch (internalFormat) {
+      case GL_SRGB_EXT:
+      case GL_SRGB8_EXT:
+      case GL_COMPRESSED_SRGB_EXT:
+      case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
+         return GL_RGB;
+      case GL_SRGB_ALPHA_EXT:
+      case GL_SRGB8_ALPHA8_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
+         return GL_RGBA;
+      case GL_SLUMINANCE_ALPHA_EXT:
+      case GL_SLUMINANCE8_ALPHA8_EXT:
+      case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
+         return GL_LUMINANCE_ALPHA;
+      case GL_SLUMINANCE_EXT:
+      case GL_SLUMINANCE8_EXT:
+      case GL_COMPRESSED_SLUMINANCE_EXT:
+         return GL_LUMINANCE;
+      default:
+         ; /* fallthrough */
+      }
+   }
+#endif /* FEATURE_EXT_texture_sRGB */
+
+   if (ctx->Extensions.EXT_texture_integer) {
+      switch (internalFormat) {
+      case GL_RGBA8UI_EXT:
+      case GL_RGBA16UI_EXT:
+      case GL_RGBA32UI_EXT:
+      case GL_RGBA8I_EXT:
+      case GL_RGBA16I_EXT:
+      case GL_RGBA32I_EXT:
+         return GL_RGBA;
+      case GL_RGB8UI_EXT:
+      case GL_RGB16UI_EXT:
+      case GL_RGB32UI_EXT:
+      case GL_RGB8I_EXT:
+      case GL_RGB16I_EXT:
+      case GL_RGB32I_EXT:
+         return GL_RGB;
+      case GL_ALPHA8UI_EXT:
+      case GL_ALPHA16UI_EXT:
+      case GL_ALPHA32UI_EXT:
+      case GL_ALPHA8I_EXT:
+      case GL_ALPHA16I_EXT:
+      case GL_ALPHA32I_EXT:
+         return GL_ALPHA;
+      case GL_INTENSITY8UI_EXT:
+      case GL_INTENSITY16UI_EXT:
+      case GL_INTENSITY32UI_EXT:
+      case GL_INTENSITY8I_EXT:
+      case GL_INTENSITY16I_EXT:
+      case GL_INTENSITY32I_EXT:
+         return GL_INTENSITY;
+      case GL_LUMINANCE8UI_EXT:
+      case GL_LUMINANCE16UI_EXT:
+      case GL_LUMINANCE32UI_EXT:
+      case GL_LUMINANCE8I_EXT:
+      case GL_LUMINANCE16I_EXT:
+      case GL_LUMINANCE32I_EXT:
+         return GL_LUMINANCE;
+      case GL_LUMINANCE_ALPHA8UI_EXT:
+      case GL_LUMINANCE_ALPHA16UI_EXT:
+      case GL_LUMINANCE_ALPHA32UI_EXT:
+      case GL_LUMINANCE_ALPHA8I_EXT:
+      case GL_LUMINANCE_ALPHA16I_EXT:
+      case GL_LUMINANCE_ALPHA32I_EXT:
+         return GL_LUMINANCE_ALPHA;
+      default:
+         ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.ARB_texture_rg) {
+      switch (internalFormat) {
+      case GL_R16F:
+	 /* R16F depends on both ARB_half_float_pixel and ARB_texture_float.
+	  */
+	 if (!ctx->Extensions.ARB_half_float_pixel)
+	    break;
+	 /* FALLTHROUGH */
+      case GL_R32F:
+	 if (!ctx->Extensions.ARB_texture_float)
+	    break;
+         return GL_RED;
+      case GL_R8I:
+      case GL_R8UI:
+      case GL_R16I:
+      case GL_R16UI:
+      case GL_R32I:
+      case GL_R32UI:
+	 if (!ctx->Extensions.EXT_texture_integer)
+	    break;
+	 /* FALLTHROUGH */
+      case GL_R8:
+      case GL_R16:
+      case GL_RED:
+      case GL_COMPRESSED_RED:
+         return GL_RED;
+
+      case GL_RG16F:
+	 /* RG16F depends on both ARB_half_float_pixel and ARB_texture_float.
+	  */
+	 if (!ctx->Extensions.ARB_half_float_pixel)
+	    break;
+	 /* FALLTHROUGH */
+      case GL_RG32F:
+	 if (!ctx->Extensions.ARB_texture_float)
+	    break;
+         return GL_RG;
+      case GL_RG8I:
+      case GL_RG8UI:
+      case GL_RG16I:
+      case GL_RG16UI:
+      case GL_RG32I:
+      case GL_RG32UI:
+	 if (!ctx->Extensions.EXT_texture_integer)
+	    break;
+	 /* FALLTHROUGH */
+      case GL_RG:
+      case GL_RG8:
+      case GL_RG16:
+      case GL_COMPRESSED_RG:
+         return GL_RG;
+      default:
+         ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.EXT_texture_shared_exponent) {
+      switch (internalFormat) {
+      case GL_RGB9_E5_EXT:
+         return GL_RGB;
+      default:
+         ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.EXT_packed_float) {
+      switch (internalFormat) {
+      case GL_R11F_G11F_B10F_EXT:
+         return GL_RGB;
+      default:
+         ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.ARB_depth_buffer_float) {
+      switch (internalFormat) {
+      case GL_DEPTH_COMPONENT32F:
+         return GL_DEPTH_COMPONENT;
+      case GL_DEPTH32F_STENCIL8:
+         return GL_DEPTH_STENCIL;
+      default:
+         ; /* fallthrough */
+      }
+   }
+
+   if (ctx->Extensions.ARB_texture_compression_rgtc) {
+      switch (internalFormat) {
+      case GL_COMPRESSED_RED_RGTC1:
+      case GL_COMPRESSED_SIGNED_RED_RGTC1:
+         return GL_RED;
+      case GL_COMPRESSED_RG_RGTC2:
+      case GL_COMPRESSED_SIGNED_RG_RGTC2:
+         return GL_RG;
+      default:
+         ; /* fallthrough */
+      }
+   }
+
+   return -1; /* error */
+}
+
+
+/**
+ * For cube map faces, return a face index in [0,5].
+ * For other targets return 0;
+ */
+GLuint
+_mesa_tex_target_to_face(GLenum target)
+{
+   if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
+       target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB)
+      return (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X;
+   else
+      return 0;
+}
+
+
+
+/**
+ * Store a gl_texture_image pointer in a gl_texture_object structure
+ * according to the target and level parameters.
+ * 
+ * \param tObj texture object.
+ * \param target texture target.
+ * \param level image level.
+ * \param texImage texture image.
+ * 
+ * This was basically prompted by the introduction of cube maps.
+ */
+void
+_mesa_set_tex_image(struct gl_texture_object *tObj,
+                    GLenum target, GLint level,
+                    struct gl_texture_image *texImage)
+{
+   const GLuint face = _mesa_tex_target_to_face(target);
+
+   ASSERT(tObj);
+   ASSERT(texImage);
+   ASSERT(target != GL_TEXTURE_RECTANGLE_NV || level == 0);
+
+   tObj->Image[face][level] = texImage;
+
+   /* Set the 'back' pointer */
+   texImage->TexObject = tObj;
+}
+
+
+/**
+ * Allocate a texture image structure.
+ * 
+ * Called via ctx->Driver.NewTextureImage() unless overriden by a device
+ * driver.
+ *
+ * \return a pointer to gl_texture_image struct with all fields initialized to
+ * zero.
+ */
+struct gl_texture_image *
+_mesa_new_texture_image( struct gl_context *ctx )
+{
+   (void) ctx;
+   return CALLOC_STRUCT(gl_texture_image);
+}
+
+
+/**
+ * Free texture image data.
+ * This function is a fallback called via ctx->Driver.FreeTexImageData().
+ *
+ * \param texImage texture image.
+ *
+ * Free the texture image data if it's not marked as client data.
+ */
+void
+_mesa_free_texture_image_data(struct gl_context *ctx,
+                              struct gl_texture_image *texImage)
+{
+   (void) ctx;
+
+   if (texImage->Data && !texImage->IsClientData) {
+      /* free the old texture data */
+      _mesa_free_texmemory(texImage->Data);
+   }
+
+   texImage->Data = NULL;
+}
+
+
+/**
+ * Free texture image.
+ *
+ * \param texImage texture image.
+ *
+ * Free the texture image structure and the associated image data.
+ */
+void
+_mesa_delete_texture_image(struct gl_context *ctx,
+                           struct gl_texture_image *texImage)
+{
+   /* Free texImage->Data and/or any other driver-specific texture
+    * image storage.
+    */
+   ASSERT(ctx->Driver.FreeTexImageData);
+   ctx->Driver.FreeTexImageData( ctx, texImage );
+
+   ASSERT(texImage->Data == NULL);
+   if (texImage->ImageOffsets)
+      free(texImage->ImageOffsets);
+   free(texImage);
+}
+
+
+/**
+ * Test if a target is a proxy target.
+ *
+ * \param target texture target.
+ *
+ * \return GL_TRUE if the target is a proxy target, GL_FALSE otherwise.
+ */
+GLboolean
+_mesa_is_proxy_texture(GLenum target)
+{
+   /* NUM_TEXTURE_TARGETS should match number of terms below */
+   assert(NUM_TEXTURE_TARGETS == 7);
+
+   return (target == GL_PROXY_TEXTURE_1D ||
+           target == GL_PROXY_TEXTURE_2D ||
+           target == GL_PROXY_TEXTURE_3D ||
+           target == GL_PROXY_TEXTURE_CUBE_MAP_ARB ||
+           target == GL_PROXY_TEXTURE_RECTANGLE_NV ||
+           target == GL_PROXY_TEXTURE_1D_ARRAY_EXT ||
+           target == GL_PROXY_TEXTURE_2D_ARRAY_EXT);
+}
+
+
+/**
+ * Return the proxy target which corresponds to the given texture target
+ */
+static GLenum
+get_proxy_target(GLenum target)
+{
+   switch (target) {
+   case GL_TEXTURE_1D:
+   case GL_PROXY_TEXTURE_1D:
+      return GL_PROXY_TEXTURE_1D;
+   case GL_TEXTURE_2D:
+   case GL_PROXY_TEXTURE_2D:
+      return GL_PROXY_TEXTURE_2D;
+   case GL_TEXTURE_3D:
+   case GL_PROXY_TEXTURE_3D:
+      return GL_PROXY_TEXTURE_3D;
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
+   case GL_TEXTURE_CUBE_MAP_ARB:
+   case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
+      return GL_PROXY_TEXTURE_CUBE_MAP_ARB;
+   case GL_TEXTURE_RECTANGLE_NV:
+   case GL_PROXY_TEXTURE_RECTANGLE_NV:
+      return GL_PROXY_TEXTURE_RECTANGLE_NV;
+   case GL_TEXTURE_1D_ARRAY_EXT:
+   case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
+      return GL_PROXY_TEXTURE_1D_ARRAY_EXT;
+   case GL_TEXTURE_2D_ARRAY_EXT:
+   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
+      return GL_PROXY_TEXTURE_2D_ARRAY_EXT;
+   default:
+      _mesa_problem(NULL, "unexpected target in get_proxy_target()");
+      return 0;
+   }
+}
+
+
+/**
+ * Get the texture object that corresponds to the target of the given
+ * texture unit.
+ *
+ * \param ctx GL context.
+ * \param texUnit texture unit.
+ * \param target texture target.
+ *
+ * \return pointer to the texture object on success, or NULL on failure.
+ * 
+ * \sa gl_texture_unit.
+ */
+struct gl_texture_object *
+_mesa_select_tex_object(struct gl_context *ctx,
+                        const struct gl_texture_unit *texUnit,
+                        GLenum target)
+{
+   const GLboolean arrayTex = (ctx->Extensions.MESA_texture_array ||
+                               ctx->Extensions.EXT_texture_array);
+
+   switch (target) {
+      case GL_TEXTURE_1D:
+         return texUnit->CurrentTex[TEXTURE_1D_INDEX];
+      case GL_PROXY_TEXTURE_1D:
+         return ctx->Texture.ProxyTex[TEXTURE_1D_INDEX];
+      case GL_TEXTURE_2D:
+         return texUnit->CurrentTex[TEXTURE_2D_INDEX];
+      case GL_PROXY_TEXTURE_2D:
+         return ctx->Texture.ProxyTex[TEXTURE_2D_INDEX];
+      case GL_TEXTURE_3D:
+         return texUnit->CurrentTex[TEXTURE_3D_INDEX];
+      case GL_PROXY_TEXTURE_3D:
+         return ctx->Texture.ProxyTex[TEXTURE_3D_INDEX];
+      case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
+      case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
+      case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
+      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
+      case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
+      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
+      case GL_TEXTURE_CUBE_MAP_ARB:
+         return ctx->Extensions.ARB_texture_cube_map
+                ? texUnit->CurrentTex[TEXTURE_CUBE_INDEX] : NULL;
+      case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
+         return ctx->Extensions.ARB_texture_cube_map
+                ? ctx->Texture.ProxyTex[TEXTURE_CUBE_INDEX] : NULL;
+      case GL_TEXTURE_RECTANGLE_NV:
+         return ctx->Extensions.NV_texture_rectangle
+                ? texUnit->CurrentTex[TEXTURE_RECT_INDEX] : NULL;
+      case GL_PROXY_TEXTURE_RECTANGLE_NV:
+         return ctx->Extensions.NV_texture_rectangle
+                ? ctx->Texture.ProxyTex[TEXTURE_RECT_INDEX] : NULL;
+      case GL_TEXTURE_1D_ARRAY_EXT:
+         return arrayTex ? texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX] : NULL;
+      case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
+         return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_1D_ARRAY_INDEX] : NULL;
+      case GL_TEXTURE_2D_ARRAY_EXT:
+         return arrayTex ? texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
+      case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
+         return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
+      default:
+         _mesa_problem(NULL, "bad target in _mesa_select_tex_object()");
+         return NULL;
+   }
+}
+
+
+/**
+ * Return pointer to texture object for given target on current texture unit.
+ */
+struct gl_texture_object *
+_mesa_get_current_tex_object(struct gl_context *ctx, GLenum target)
+{
+   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
+   return _mesa_select_tex_object(ctx, texUnit, target);
+}
+
+
+/**
+ * Get a texture image pointer from a texture object, given a texture
+ * target and mipmap level.  The target and level parameters should
+ * have already been error-checked.
+ *
+ * \param ctx GL context.
+ * \param texObj texture unit.
+ * \param target texture target.
+ * \param level image level.
+ *
+ * \return pointer to the texture image structure, or NULL on failure.
+ */
+struct gl_texture_image *
+_mesa_select_tex_image(struct gl_context *ctx,
+                       const struct gl_texture_object *texObj,
+		       GLenum target, GLint level)
+{
+   const GLuint face = _mesa_tex_target_to_face(target);
+
+   ASSERT(texObj);
+   ASSERT(level >= 0);
+   ASSERT(level < MAX_TEXTURE_LEVELS);
+
+   return texObj->Image[face][level];
+}
+
+
+/**
+ * Like _mesa_select_tex_image() but if the image doesn't exist, allocate
+ * it and install it.  Only return NULL if passed a bad parameter or run
+ * out of memory.
+ */
+struct gl_texture_image *
+_mesa_get_tex_image(struct gl_context *ctx, struct gl_texture_object *texObj,
+                    GLenum target, GLint level)
+{
+   struct gl_texture_image *texImage;
+
+   if (!texObj)
+      return NULL;
+   
+   texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+   if (!texImage) {
+      texImage = ctx->Driver.NewTextureImage(ctx);
+      if (!texImage) {
+         _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture image allocation");
+         return NULL;
+      }
+
+      _mesa_set_tex_image(texObj, target, level, texImage);
+   }
+
+   return texImage;
+}
+
+
+/**
+ * Return pointer to the specified proxy texture image.
+ * Note that proxy textures are per-context, not per-texture unit.
+ * \return pointer to texture image or NULL if invalid target, invalid
+ *         level, or out of memory.
+ */
+struct gl_texture_image *
+_mesa_get_proxy_tex_image(struct gl_context *ctx, GLenum target, GLint level)
+{
+   struct gl_texture_image *texImage;
+   GLuint texIndex;
+
+   if (level < 0 )
+      return NULL;
+
+   switch (target) {
+   case GL_PROXY_TEXTURE_1D:
+      if (level >= ctx->Const.MaxTextureLevels)
+         return NULL;
+      texIndex = TEXTURE_1D_INDEX;
+      break;
+   case GL_PROXY_TEXTURE_2D:
+      if (level >= ctx->Const.MaxTextureLevels)
+         return NULL;
+      texIndex = TEXTURE_2D_INDEX;
+      break;
+   case GL_PROXY_TEXTURE_3D:
+      if (level >= ctx->Const.Max3DTextureLevels)
+         return NULL;
+      texIndex = TEXTURE_3D_INDEX;
+      break;
+   case GL_PROXY_TEXTURE_CUBE_MAP:
+      if (level >= ctx->Const.MaxCubeTextureLevels)
+         return NULL;
+      texIndex = TEXTURE_CUBE_INDEX;
+      break;
+   case GL_PROXY_TEXTURE_RECTANGLE_NV:
+      if (level > 0)
+         return NULL;
+      texIndex = TEXTURE_RECT_INDEX;
+      break;
+   case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
+      if (level >= ctx->Const.MaxTextureLevels)
+         return NULL;
+      texIndex = TEXTURE_1D_ARRAY_INDEX;
+      break;
+   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
+      if (level >= ctx->Const.MaxTextureLevels)
+         return NULL;
+      texIndex = TEXTURE_2D_ARRAY_INDEX;
+      break;
+   default:
+      return NULL;
+   }
+
+   texImage = ctx->Texture.ProxyTex[texIndex]->Image[0][level];
+   if (!texImage) {
+      texImage = ctx->Driver.NewTextureImage(ctx);
+      if (!texImage) {
+         _mesa_error(ctx, GL_OUT_OF_MEMORY, "proxy texture allocation");
+         return NULL;
+      }
+      ctx->Texture.ProxyTex[texIndex]->Image[0][level] = texImage;
+      /* Set the 'back' pointer */
+      texImage->TexObject = ctx->Texture.ProxyTex[texIndex];
+   }
+   return texImage;
+}
+
+
+/**
+ * Get the maximum number of allowed mipmap levels.
+ *
+ * \param ctx GL context.
+ * \param target texture target.
+ * 
+ * \return the maximum number of allowed mipmap levels for the given
+ * texture target, or zero if passed a bad target.
+ *
+ * \sa gl_constants.
+ */
+GLint
+_mesa_max_texture_levels(struct gl_context *ctx, GLenum target)
+{
+   switch (target) {
+   case GL_TEXTURE_1D:
+   case GL_PROXY_TEXTURE_1D:
+   case GL_TEXTURE_2D:
+   case GL_PROXY_TEXTURE_2D:
+      return ctx->Const.MaxTextureLevels;
+   case GL_TEXTURE_3D:
+   case GL_PROXY_TEXTURE_3D:
+      return ctx->Const.Max3DTextureLevels;
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
+   case GL_TEXTURE_CUBE_MAP_ARB:
+   case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
+      return ctx->Extensions.ARB_texture_cube_map
+         ? ctx->Const.MaxCubeTextureLevels : 0;
+   case GL_TEXTURE_RECTANGLE_NV:
+   case GL_PROXY_TEXTURE_RECTANGLE_NV:
+      return ctx->Extensions.NV_texture_rectangle ? 1 : 0;
+   case GL_TEXTURE_1D_ARRAY_EXT:
+   case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
+   case GL_TEXTURE_2D_ARRAY_EXT:
+   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
+      return (ctx->Extensions.MESA_texture_array ||
+              ctx->Extensions.EXT_texture_array)
+         ? ctx->Const.MaxTextureLevels : 0;
+   default:
+      return 0; /* bad target */
+   }
+}
+
+
+/**
+ * Return number of dimensions per mipmap level for the given texture target.
+ */
+GLint
+_mesa_get_texture_dimensions(GLenum target)
+{
+   switch (target) {
+   case GL_TEXTURE_1D:
+   case GL_PROXY_TEXTURE_1D:
+      return 1;
+   case GL_TEXTURE_2D:
+   case GL_TEXTURE_RECTANGLE:
+   case GL_TEXTURE_CUBE_MAP:
+   case GL_PROXY_TEXTURE_2D:
+   case GL_PROXY_TEXTURE_RECTANGLE:
+   case GL_PROXY_TEXTURE_CUBE_MAP:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
+   case GL_TEXTURE_1D_ARRAY:
+   case GL_PROXY_TEXTURE_1D_ARRAY:
+      return 2;
+   case GL_TEXTURE_3D:
+   case GL_PROXY_TEXTURE_3D:
+   case GL_TEXTURE_2D_ARRAY:
+   case GL_PROXY_TEXTURE_2D_ARRAY:
+      return 3;
+   default:
+      _mesa_problem(NULL, "invalid target 0x%x in get_texture_dimensions()",
+                    target);
+      return 2;
+   }
+}
+
+
+
+
+#if 000 /* not used anymore */
+/*
+ * glTexImage[123]D can accept a NULL image pointer.  In this case we
+ * create a texture image with unspecified image contents per the OpenGL
+ * spec.
+ */
+static GLubyte *
+make_null_texture(GLint width, GLint height, GLint depth, GLenum format)
+{
+   const GLint components = _mesa_components_in_format(format);
+   const GLint numPixels = width * height * depth;
+   GLubyte *data = (GLubyte *) MALLOC(numPixels * components * sizeof(GLubyte));
+
+#ifdef DEBUG
+   /*
+    * Let's see if anyone finds this.  If glTexImage2D() is called with
+    * a NULL image pointer then load the texture image with something
+    * interesting instead of leaving it indeterminate.
+    */
+   if (data) {
+      static const char message[8][32] = {
+         "   X   X  XXXXX   XXX     X    ",
+         "   XX XX  X      X   X   X X   ",
+         "   X X X  X      X      X   X  ",
+         "   X   X  XXXX    XXX   XXXXX  ",
+         "   X   X  X          X  X   X  ",
+         "   X   X  X      X   X  X   X  ",
+         "   X   X  XXXXX   XXX   X   X  ",
+         "                               "
+      };
+
+      GLubyte *imgPtr = data;
+      GLint h, i, j, k;
+      for (h = 0; h < depth; h++) {
+         for (i = 0; i < height; i++) {
+            GLint srcRow = 7 - (i % 8);
+            for (j = 0; j < width; j++) {
+               GLint srcCol = j % 32;
+               GLubyte texel = (message[srcRow][srcCol]=='X') ? 255 : 70;
+               for (k = 0; k < components; k++) {
+                  *imgPtr++ = texel;
+               }
+            }
+         }
+      }
+   }
+#endif
+
+   return data;
+}
+#endif
+
+
+
+/**
+ * Reset the fields of a gl_texture_image struct to zero.
+ * 
+ * \param img texture image structure.
+ *
+ * This is called when a proxy texture test fails, we set all the
+ * image members (except DriverData) to zero.
+ * It's also used in glTexImage[123]D as a safeguard to be sure all
+ * required fields get initialized properly by the Driver.TexImage[123]D
+ * functions.
+ */
+static void
+clear_teximage_fields(struct gl_texture_image *img)
+{
+   ASSERT(img);
+   img->_BaseFormat = 0;
+   img->InternalFormat = 0;
+   img->Border = 0;
+   img->Width = 0;
+   img->Height = 0;
+   img->Depth = 0;
+   img->RowStride = 0;
+   if (img->ImageOffsets) {
+      free(img->ImageOffsets);
+      img->ImageOffsets = NULL;
+   }
+   img->Width2 = 0;
+   img->Height2 = 0;
+   img->Depth2 = 0;
+   img->WidthLog2 = 0;
+   img->HeightLog2 = 0;
+   img->DepthLog2 = 0;
+   img->Data = NULL;
+   img->TexFormat = MESA_FORMAT_NONE;
+   img->FetchTexelc = NULL;
+   img->FetchTexelf = NULL;
+}
+
+
+/**
+ * Initialize basic fields of the gl_texture_image struct.
+ *
+ * \param ctx GL context.
+ * \param target texture target (GL_TEXTURE_1D, GL_TEXTURE_RECTANGLE, etc).
+ * \param img texture image structure to be initialized.
+ * \param width image width.
+ * \param height image height.
+ * \param depth image depth.
+ * \param border image border.
+ * \param internalFormat internal format.
+ * \param format  the actual hardware format (one of MESA_FORMAT_*)
+ *
+ * Fills in the fields of \p img with the given information.
+ * Note: width, height and depth include the border.
+ */
+void
+_mesa_init_teximage_fields(struct gl_context *ctx, GLenum target,
+                           struct gl_texture_image *img,
+                           GLsizei width, GLsizei height, GLsizei depth,
+                           GLint border, GLenum internalFormat,
+                           gl_format format)
+{
+   GLint i, dims;
+
+   ASSERT(img);
+   ASSERT(width >= 0);
+   ASSERT(height >= 0);
+   ASSERT(depth >= 0);
+
+   img->_BaseFormat = _mesa_base_tex_format( ctx, internalFormat );
+   ASSERT(img->_BaseFormat > 0);
+   img->InternalFormat = internalFormat;
+   img->Border = border;
+   img->Width = width;
+   img->Height = height;
+   img->Depth = depth;
+
+   img->Width2 = width - 2 * border;   /* == 1 << img->WidthLog2; */
+   img->WidthLog2 = logbase2(img->Width2);
+
+   if (height == 1) { /* 1-D texture */
+      img->Height2 = 1;
+      img->HeightLog2 = 0;
+   }
+   else {
+      img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */
+      img->HeightLog2 = logbase2(img->Height2);
+   }
+
+   if (depth == 1) {  /* 2-D texture */
+      img->Depth2 = 1;
+      img->DepthLog2 = 0;
+   }
+   else {
+      img->Depth2 = depth - 2 * border;   /* == 1 << img->DepthLog2; */
+      img->DepthLog2 = logbase2(img->Depth2);
+   }
+
+   img->MaxLog2 = MAX2(img->WidthLog2, img->HeightLog2);
+
+   if ((width == 1 || _mesa_is_pow_two(img->Width2)) &&
+       (height == 1 || _mesa_is_pow_two(img->Height2)) &&
+       (depth == 1 || _mesa_is_pow_two(img->Depth2)))
+      img->_IsPowerOfTwo = GL_TRUE;
+   else
+      img->_IsPowerOfTwo = GL_FALSE;
+
+   /* RowStride and ImageOffsets[] describe how to address texels in 'Data' */
+   img->RowStride = width;
+   /* Allocate the ImageOffsets array and initialize to typical values.
+    * We allocate the array for 1D/2D textures too in order to avoid special-
+    * case code in the texstore routines.
+    */
+   if (img->ImageOffsets)
+      free(img->ImageOffsets);
+   img->ImageOffsets = (GLuint *) malloc(depth * sizeof(GLuint));
+   for (i = 0; i < depth; i++) {
+      img->ImageOffsets[i] = i * width * height;
+   }
+
+   /* Compute Width/Height/DepthScale for mipmap lod computation */
+   if (target == GL_TEXTURE_RECTANGLE_NV) {
+      /* scale = 1.0 since texture coords directly map to texels */
+      img->WidthScale = 1.0;
+      img->HeightScale = 1.0;
+      img->DepthScale = 1.0;
+   }
+   else {
+      img->WidthScale = (GLfloat) img->Width;
+      img->HeightScale = (GLfloat) img->Height;
+      img->DepthScale = (GLfloat) img->Depth;
+   }
+
+   img->TexFormat = format;
+
+   dims = _mesa_get_texture_dimensions(target);
+
+   _mesa_set_fetch_functions(img, dims);
+}
+
+
+/**
+ * Free and clear fields of the gl_texture_image struct.
+ *
+ * \param ctx GL context.
+ * \param texImage texture image structure to be cleared.
+ *
+ * After the call, \p texImage will have no data associated with it.  Its
+ * fields are cleared so that its parent object will test incomplete.
+ */
+void
+_mesa_clear_texture_image(struct gl_context *ctx,
+                          struct gl_texture_image *texImage)
+{
+   ctx->Driver.FreeTexImageData(ctx, texImage);
+   clear_teximage_fields(texImage);
+}
+
+
+/**
+ * This is the fallback for Driver.TestProxyTexImage().  Test the texture
+ * level, width, height and depth against the ctx->Const limits for textures.
+ *
+ * A hardware driver might override this function if, for example, the
+ * max 3D texture size is 512x512x64 (i.e. not a cube).
+ *
+ * Note that width, height, depth == 0 is not an error.  However, a
+ * texture with zero width/height/depth will be considered "incomplete"
+ * and texturing will effectively be disabled.
+ *
+ * \param target  one of GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D,
+ *                GL_PROXY_TEXTURE_3D, GL_PROXY_TEXTURE_RECTANGLE_NV,
+ *                GL_PROXY_TEXTURE_CUBE_MAP_ARB.
+ * \param level  as passed to glTexImage
+ * \param internalFormat  as passed to glTexImage
+ * \param format  as passed to glTexImage
+ * \param type  as passed to glTexImage
+ * \param width  as passed to glTexImage
+ * \param height  as passed to glTexImage
+ * \param depth  as passed to glTexImage
+ * \param border  as passed to glTexImage
+ * \return GL_TRUE if the image is acceptable, GL_FALSE if not acceptable.
+ */
+GLboolean
+_mesa_test_proxy_teximage(struct gl_context *ctx, GLenum target, GLint level,
+                          GLint internalFormat, GLenum format, GLenum type,
+                          GLint width, GLint height, GLint depth, GLint border)
+{
+   GLint maxSize;
+
+   (void) internalFormat;
+   (void) format;
+   (void) type;
+
+   switch (target) {
+   case GL_PROXY_TEXTURE_1D:
+      maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
+      if (width < 2 * border || width > 2 + maxSize)
+         return GL_FALSE;
+      if (level >= ctx->Const.MaxTextureLevels)
+         return GL_FALSE;
+      if (!ctx->Extensions.ARB_texture_non_power_of_two) {
+         if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
+            return GL_FALSE;
+      }
+      return GL_TRUE;
+
+   case GL_PROXY_TEXTURE_2D:
+      maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
+      if (width < 2 * border || width > 2 + maxSize)
+         return GL_FALSE;
+      if (height < 2 * border || height > 2 + maxSize)
+         return GL_FALSE;
+      if (level >= ctx->Const.MaxTextureLevels)
+         return GL_FALSE;
+      if (!ctx->Extensions.ARB_texture_non_power_of_two) {
+         if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
+            return GL_FALSE;
+         if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
+            return GL_FALSE;
+      }
+      return GL_TRUE;
+
+   case GL_PROXY_TEXTURE_3D:
+      maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
+      if (width < 2 * border || width > 2 + maxSize)
+         return GL_FALSE;
+      if (height < 2 * border || height > 2 + maxSize)
+         return GL_FALSE;
+      if (depth < 2 * border || depth > 2 + maxSize)
+         return GL_FALSE;
+      if (level >= ctx->Const.Max3DTextureLevels)
+         return GL_FALSE;
+      if (!ctx->Extensions.ARB_texture_non_power_of_two) {
+         if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
+            return GL_FALSE;
+         if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
+            return GL_FALSE;
+         if (depth > 0 && !_mesa_is_pow_two(depth - 2 * border))
+            return GL_FALSE;
+      }
+      return GL_TRUE;
+
+   case GL_PROXY_TEXTURE_RECTANGLE_NV:
+      maxSize = ctx->Const.MaxTextureRectSize;
+      if (width < 0 || width > maxSize)
+         return GL_FALSE;
+      if (height < 0 || height > maxSize)
+         return GL_FALSE;
+      if (level != 0)
+         return GL_FALSE;
+      return GL_TRUE;
+
+   case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
+      maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 1);
+      if (width < 2 * border || width > 2 + maxSize)
+         return GL_FALSE;
+      if (height < 2 * border || height > 2 + maxSize)
+         return GL_FALSE;
+      if (level >= ctx->Const.MaxCubeTextureLevels)
+         return GL_FALSE;
+      if (!ctx->Extensions.ARB_texture_non_power_of_two) {
+         if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
+            return GL_FALSE;
+         if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
+            return GL_FALSE;
+      }
+      return GL_TRUE;
+
+   case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
+      maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
+      if (width < 2 * border || width > 2 + maxSize)
+         return GL_FALSE;
+      if (height < 1 || height > ctx->Const.MaxArrayTextureLayers)
+         return GL_FALSE;
+      if (level >= ctx->Const.MaxTextureLevels)
+         return GL_FALSE;
+      if (!ctx->Extensions.ARB_texture_non_power_of_two) {
+         if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
+            return GL_FALSE;
+      }
+      return GL_TRUE;
+
+   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
+      maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
+      if (width < 2 * border || width > 2 + maxSize)
+         return GL_FALSE;
+      if (height < 2 * border || height > 2 + maxSize)
+         return GL_FALSE;
+      if (depth < 1 || depth > ctx->Const.MaxArrayTextureLayers)
+         return GL_FALSE;
+      if (level >= ctx->Const.MaxTextureLevels)
+         return GL_FALSE;
+      if (!ctx->Extensions.ARB_texture_non_power_of_two) {
+         if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
+            return GL_FALSE;
+         if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
+            return GL_FALSE;
+      }
+      return GL_TRUE;
+
+   default:
+      _mesa_problem(ctx, "Invalid target in _mesa_test_proxy_teximage");
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Check if the memory used by the texture would exceed the driver's limit.
+ * This lets us support a max 3D texture size of 8K (for example) but
+ * prevents allocating a full 8K x 8K x 8K texture.
+ * XXX this could be rolled into the proxy texture size test (above) but
+ * we don't have the actual texture internal format at that point.
+ */
+static GLboolean
+legal_texture_size(struct gl_context *ctx, gl_format format,
+                   GLint width, GLint height, GLint depth)
+{
+   uint64_t bytes = _mesa_format_image_size64(format, width, height, depth);
+   uint64_t mbytes = bytes / (1024 * 1024); /* convert to MB */
+   return mbytes <= (uint64_t) ctx->Const.MaxTextureMbytes;
+}
+
+
+
+/**
+ * Helper function to determine whether a target and specific compression
+ * format are supported.
+ */
+static GLboolean
+target_can_be_compressed(const struct gl_context *ctx, GLenum target,
+                         GLenum intFormat)
+{
+   (void) intFormat;  /* not used yet */
+
+   switch (target) {
+   case GL_TEXTURE_2D:
+   case GL_PROXY_TEXTURE_2D:
+      return GL_TRUE; /* true for any compressed format so far */
+   case GL_PROXY_TEXTURE_CUBE_MAP:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
+      return ctx->Extensions.ARB_texture_cube_map;
+   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
+   case GL_TEXTURE_2D_ARRAY_EXT:
+      return (ctx->Extensions.MESA_texture_array ||
+              ctx->Extensions.EXT_texture_array);
+   default:
+      return GL_FALSE;
+   }      
+}
+
+
+/**
+ * Check if the given texture target value is legal for a
+ * glTexImage1/2/3D call.
+ */
+static GLboolean
+legal_teximage_target(struct gl_context *ctx, GLuint dims, GLenum target)
+{
+   switch (dims) {
+   case 1:
+      switch (target) {
+      case GL_TEXTURE_1D:
+      case GL_PROXY_TEXTURE_1D:
+         return GL_TRUE;
+      default:
+         return GL_FALSE;
+      }
+   case 2:
+      switch (target) {
+      case GL_TEXTURE_2D:
+      case GL_PROXY_TEXTURE_2D:
+         return GL_TRUE;
+      case GL_PROXY_TEXTURE_CUBE_MAP:
+      case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+      case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+      case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+      case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
+         return ctx->Extensions.ARB_texture_cube_map;
+      case GL_TEXTURE_RECTANGLE_NV:
+      case GL_PROXY_TEXTURE_RECTANGLE_NV:
+         return ctx->Extensions.NV_texture_rectangle;
+      case GL_TEXTURE_1D_ARRAY_EXT:
+      case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
+         return (ctx->Extensions.MESA_texture_array ||
+                 ctx->Extensions.EXT_texture_array);
+      default:
+         return GL_FALSE;
+      }
+   case 3:
+      switch (target) {
+      case GL_TEXTURE_3D:
+      case GL_PROXY_TEXTURE_3D:
+         return GL_TRUE;
+      case GL_TEXTURE_2D_ARRAY_EXT:
+      case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
+         return (ctx->Extensions.MESA_texture_array ||
+                 ctx->Extensions.EXT_texture_array);
+      default:
+         return GL_FALSE;
+      }
+   default:
+      _mesa_problem(ctx, "invalid dims=%u in legal_teximage_target()", dims);
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Check if the given texture target value is legal for a
+ * glTexSubImage, glCopyTexSubImage or glCopyTexImage call.
+ * The difference compared to legal_teximage_target() above is that
+ * proxy targets are not supported.
+ */
+static GLboolean
+legal_texsubimage_target(struct gl_context *ctx, GLuint dims, GLenum target)
+{
+   switch (dims) {
+   case 1:
+      return target == GL_TEXTURE_1D;
+   case 2:
+      switch (target) {
+      case GL_TEXTURE_2D:
+         return GL_TRUE;
+      case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+      case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+      case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+      case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+      case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
+         return ctx->Extensions.ARB_texture_cube_map;
+      case GL_TEXTURE_RECTANGLE_NV:
+         return ctx->Extensions.NV_texture_rectangle;
+      case GL_TEXTURE_1D_ARRAY_EXT:
+         return (ctx->Extensions.MESA_texture_array ||
+                 ctx->Extensions.EXT_texture_array);
+      default:
+         return GL_FALSE;
+      }
+   case 3:
+      switch (target) {
+      case GL_TEXTURE_3D:
+         return GL_TRUE;
+      case GL_TEXTURE_2D_ARRAY_EXT:
+         return (ctx->Extensions.MESA_texture_array ||
+                 ctx->Extensions.EXT_texture_array);
+      default:
+         return GL_FALSE;
+      }
+   default:
+      _mesa_problem(ctx, "invalid dims=%u in legal_texsubimage_target()",
+                    dims);
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Test the glTexImage[123]D() parameters for errors.
+ * 
+ * \param ctx GL context.
+ * \param dimensions texture image dimensions (must be 1, 2 or 3).
+ * \param target texture target given by the user.
+ * \param level image level given by the user.
+ * \param internalFormat internal format given by the user.
+ * \param format pixel data format given by the user.
+ * \param type pixel data type given by the user.
+ * \param width image width given by the user.
+ * \param height image height given by the user.
+ * \param depth image depth given by the user.
+ * \param border image border given by the user.
+ * 
+ * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
+ *
+ * Verifies each of the parameters against the constants specified in
+ * __struct gl_contextRec::Const and the supported extensions, and according
+ * to the OpenGL specification.
+ */
+static GLboolean
+texture_error_check( struct gl_context *ctx,
+                     GLuint dimensions, GLenum target,
+                     GLint level, GLint internalFormat,
+                     GLenum format, GLenum type,
+                     GLint width, GLint height,
+                     GLint depth, GLint border )
+{
+   const GLenum proxyTarget = get_proxy_target(target);
+   const GLboolean isProxy = target == proxyTarget;
+   GLboolean sizeOK = GL_TRUE;
+   GLboolean colorFormat, indexFormat;
+
+   /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
+   if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
+      if (!isProxy) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glTexImage%dD(level=%d)", dimensions, level);
+      }
+      return GL_TRUE;
+   }
+
+   /* Check border */
+   if (border < 0 || border > 1 ||
+       ((target == GL_TEXTURE_RECTANGLE_NV ||
+         target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) {
+      if (!isProxy) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glTexImage%dD(border=%d)", dimensions, border);
+      }
+      return GL_TRUE;
+   }
+
+   if (width < 0 || height < 0 || depth < 0) {
+      if (!isProxy) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glTexImage%dD(width, height or depth < 0)", dimensions);
+      }
+      return GL_TRUE;
+   }
+
+   /* Do this simple check before calling the TestProxyTexImage() function */
+   if (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {
+      sizeOK = (width == height);
+   }
+
+   /*
+    * Use the proxy texture driver hook to see if the size/level/etc are
+    * legal.
+    */
+   sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
+                                                    internalFormat, format,
+                                                    type, width, height,
+                                                    depth, border);
+   if (!sizeOK) {
+      if (!isProxy) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glTexImage%dD(level=%d, width=%d, height=%d, depth=%d)",
+                     dimensions, level, width, height, depth);
+      }
+      return GL_TRUE;
+   }
+
+   /* Check internalFormat */
+   if (_mesa_base_tex_format(ctx, internalFormat) < 0) {
+      if (!isProxy) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glTexImage%dD(internalFormat=%s)",
+                     dimensions, _mesa_lookup_enum_by_nr(internalFormat));
+      }
+      return GL_TRUE;
+   }
+
+   /* Check incoming image format and type */
+   if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
+      /* Normally, GL_INVALID_OPERATION is generated by a format/type
+       * mismatch (see the 1.2 spec page 94, sec 3.6.4.).  But with the
+       * GL_EXT_texture_integer extension, some combinations should generate
+       * GL_INVALID_ENUM instead (grr!).
+       */
+      if (!isProxy) {
+         GLenum error = _mesa_is_integer_format(format)
+            ? GL_INVALID_ENUM : GL_INVALID_OPERATION;
+         _mesa_error(ctx, error,
+                     "glTexImage%dD(incompatible format 0x%x, type 0x%x)",
+                     dimensions, format, type);
+      }
+      return GL_TRUE;
+   }
+
+   /* make sure internal format and format basically agree */
+   colorFormat = _mesa_is_color_format(format);
+   indexFormat = _mesa_is_index_format(format);
+   if ((_mesa_is_color_format(internalFormat) && !colorFormat && !indexFormat) ||
+       (_mesa_is_index_format(internalFormat) && !indexFormat) ||
+       (_mesa_is_depth_format(internalFormat) != _mesa_is_depth_format(format)) ||
+       (_mesa_is_ycbcr_format(internalFormat) != _mesa_is_ycbcr_format(format)) ||
+       (_mesa_is_depthstencil_format(internalFormat) != _mesa_is_depthstencil_format(format)) ||
+       (_mesa_is_dudv_format(internalFormat) != _mesa_is_dudv_format(format))) {
+      if (!isProxy)
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glTexImage%dD(incompatible internalFormat 0x%x, format 0x%x)",
+                     dimensions, internalFormat, format);
+      return GL_TRUE;
+   }
+
+   /* additional checks for ycbcr textures */
+   if (internalFormat == GL_YCBCR_MESA) {
+      ASSERT(ctx->Extensions.MESA_ycbcr_texture);
+      if (type != GL_UNSIGNED_SHORT_8_8_MESA &&
+          type != GL_UNSIGNED_SHORT_8_8_REV_MESA) {
+         char message[100];
+         _mesa_snprintf(message, sizeof(message),
+                        "glTexImage%dD(format/type YCBCR mismatch", dimensions);
+         _mesa_error(ctx, GL_INVALID_ENUM, "%s", message);
+         return GL_TRUE; /* error */
+      }
+      if (target != GL_TEXTURE_2D &&
+          target != GL_PROXY_TEXTURE_2D &&
+          target != GL_TEXTURE_RECTANGLE_NV &&
+          target != GL_PROXY_TEXTURE_RECTANGLE_NV) {
+         if (!isProxy)
+            _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage(target)");
+         return GL_TRUE;
+      }
+      if (border != 0) {
+         if (!isProxy) {
+            char message[100];
+            _mesa_snprintf(message, sizeof(message),
+                           "glTexImage%dD(format=GL_YCBCR_MESA and border=%d)",
+                           dimensions, border);
+            _mesa_error(ctx, GL_INVALID_VALUE, "%s", message);
+         }
+         return GL_TRUE;
+      }
+   }
+
+   /* additional checks for depth textures */
+   if (_mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT) {
+      /* Only 1D, 2D and rectangular textures supported, not 3D or cubes */
+      if (target != GL_TEXTURE_1D &&
+          target != GL_PROXY_TEXTURE_1D &&
+          target != GL_TEXTURE_2D &&
+          target != GL_PROXY_TEXTURE_2D &&
+          target != GL_TEXTURE_RECTANGLE_ARB &&
+          target != GL_PROXY_TEXTURE_RECTANGLE_ARB) {
+         if (!isProxy)
+            _mesa_error(ctx, GL_INVALID_ENUM,
+                        "glTexImage(target/internalFormat)");
+         return GL_TRUE;
+      }
+   }
+
+   /* additional checks for compressed textures */
+   if (_mesa_is_compressed_format(ctx, internalFormat)) {
+      if (!target_can_be_compressed(ctx, target, internalFormat)) {
+         if (!isProxy)
+            _mesa_error(ctx, GL_INVALID_ENUM,
+                        "glTexImage%dD(target)", dimensions);
+         return GL_TRUE;
+      }
+      if (border != 0) {
+         if (!isProxy) {
+            _mesa_error(ctx, GL_INVALID_OPERATION,
+                        "glTexImage%dD(border!=0)", dimensions);
+         }
+         return GL_TRUE;
+      }
+   }
+
+   /* additional checks for integer textures */
+   if (ctx->Extensions.EXT_texture_integer &&
+       (_mesa_is_integer_format(format) !=
+        _mesa_is_integer_format(internalFormat))) {
+      if (!isProxy) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glTexImage%dD(integer/non-integer format mismatch)",
+                     dimensions);
+      }
+      return GL_TRUE;
+   }
+
+   /* if we get here, the parameters are OK */
+   return GL_FALSE;
+}
+
+
+/**
+ * Test glTexSubImage[123]D() parameters for errors.
+ * 
+ * \param ctx GL context.
+ * \param dimensions texture image dimensions (must be 1, 2 or 3).
+ * \param target texture target given by the user.
+ * \param level image level given by the user.
+ * \param xoffset sub-image x offset given by the user.
+ * \param yoffset sub-image y offset given by the user.
+ * \param zoffset sub-image z offset given by the user.
+ * \param format pixel data format given by the user.
+ * \param type pixel data type given by the user.
+ * \param width image width given by the user.
+ * \param height image height given by the user.
+ * \param depth image depth given by the user.
+ * 
+ * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
+ *
+ * Verifies each of the parameters against the constants specified in
+ * __struct gl_contextRec::Const and the supported extensions, and according
+ * to the OpenGL specification.
+ */
+static GLboolean
+subtexture_error_check( struct gl_context *ctx, GLuint dimensions,
+                        GLenum target, GLint level,
+                        GLint xoffset, GLint yoffset, GLint zoffset,
+                        GLint width, GLint height, GLint depth,
+                        GLenum format, GLenum type )
+{
+   /* Basic level check */
+   if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level=%d)", level);
+      return GL_TRUE;
+   }
+
+   /* Check for negative sizes */
+   if (width < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glTexSubImage%dD(width=%d)", dimensions, width);
+      return GL_TRUE;
+   }
+   if (height < 0 && dimensions > 1) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glTexSubImage%dD(height=%d)", dimensions, height);
+      return GL_TRUE;
+   }
+   if (depth < 0 && dimensions > 2) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glTexSubImage%dD(depth=%d)", dimensions, depth);
+      return GL_TRUE;
+   }
+
+   if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
+      /* As with the glTexImage2D check above, the error code here
+       * depends on texture integer.
+       */
+      GLenum error = _mesa_is_integer_format(format)
+         ? GL_INVALID_OPERATION : GL_INVALID_ENUM;
+      _mesa_error(ctx, error,
+                  "glTexSubImage%dD(incompatible format 0x%x, type 0x%x)",
+                  dimensions, format, type);
+      return GL_TRUE;
+   }
+
+   return GL_FALSE;
+}
+
+
+/**
+ * Do second part of glTexSubImage which depends on the destination texture.
+ * \return GL_TRUE if error recorded, GL_FALSE otherwise
+ */
+static GLboolean
+subtexture_error_check2( struct gl_context *ctx, GLuint dimensions,
+			 GLenum target, GLint level,
+			 GLint xoffset, GLint yoffset, GLint zoffset,
+			 GLint width, GLint height, GLint depth,
+			 GLenum format, GLenum type,
+			 const struct gl_texture_image *destTex )
+{
+   if (!destTex) {
+      /* undefined image level */
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glTexSubImage%dD", dimensions);
+      return GL_TRUE;
+   }
+
+   if (xoffset < -((GLint)destTex->Border)) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset)",
+                  dimensions);
+      return GL_TRUE;
+   }
+   if (xoffset + width > (GLint) (destTex->Width + destTex->Border)) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset+width)",
+                  dimensions);
+      return GL_TRUE;
+   }
+   if (dimensions > 1) {
+      if (yoffset < -((GLint)destTex->Border)) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset)",
+                     dimensions);
+         return GL_TRUE;
+      }
+      if (yoffset + height > (GLint) (destTex->Height + destTex->Border)) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset+height)",
+                     dimensions);
+         return GL_TRUE;
+      }
+   }
+   if (dimensions > 2) {
+      if (zoffset < -((GLint)destTex->Border)) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset)");
+         return GL_TRUE;
+      }
+      if (zoffset + depth  > (GLint) (destTex->Depth + destTex->Border)) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset+depth)");
+         return GL_TRUE;
+      }
+   }
+
+   if (_mesa_is_format_compressed(destTex->TexFormat)) {
+      GLuint bw, bh;
+
+      /* do tests which depend on compression block size */
+      _mesa_get_format_block_size(destTex->TexFormat, &bw, &bh);
+
+      /* offset must be multiple of block size */
+      if ((xoffset % bw != 0) || (yoffset % bh != 0)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glTexSubImage%dD(xoffset = %d, yoffset = %d)",
+                     dimensions, xoffset, yoffset);
+         return GL_TRUE;
+      }
+      /* size must be multiple of bw by bh or equal to whole texture size */
+      if ((width % bw != 0) && (GLuint) width != destTex->Width) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glTexSubImage%dD(width = %d)", dimensions, width);
+         return GL_TRUE;
+      }         
+      if ((height % bh != 0) && (GLuint) height != destTex->Height) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glTexSubImage%dD(height = %d)", dimensions, height);
+         return GL_TRUE;
+      }         
+   }
+
+   return GL_FALSE;
+}
+
+
+/**
+ * Test glCopyTexImage[12]D() parameters for errors.
+ * 
+ * \param ctx GL context.
+ * \param dimensions texture image dimensions (must be 1, 2 or 3).
+ * \param target texture target given by the user.
+ * \param level image level given by the user.
+ * \param internalFormat internal format given by the user.
+ * \param width image width given by the user.
+ * \param height image height given by the user.
+ * \param border texture border.
+ * 
+ * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
+ * 
+ * Verifies each of the parameters against the constants specified in
+ * __struct gl_contextRec::Const and the supported extensions, and according
+ * to the OpenGL specification.
+ */
+static GLboolean
+copytexture_error_check( struct gl_context *ctx, GLuint dimensions,
+                         GLenum target, GLint level, GLint internalFormat,
+                         GLint width, GLint height, GLint border )
+{
+   const GLenum proxyTarget = get_proxy_target(target);
+   const GLenum type = GL_FLOAT;
+   GLboolean sizeOK;
+   GLint format;
+
+   /* check target */
+   if (!legal_texsubimage_target(ctx, dimensions, target)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexImage%uD(target=%s)",
+                  dimensions, _mesa_lookup_enum_by_nr(target));
+      return GL_TRUE;
+   }       
+
+   /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
+   if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glCopyTexImage%dD(level=%d)", dimensions, level);
+      return GL_TRUE;
+   }
+
+   /* Check that the source buffer is complete */
+   if (ctx->ReadBuffer->Name) {
+      if (ctx->ReadBuffer->_Status == 0) {
+         _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
+      }
+      if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+         _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+                     "glCopyTexImage%dD(invalid readbuffer)", dimensions);
+         return GL_TRUE;
+      }
+   }
+
+   /* Check border */
+   if (border < 0 || border > 1 ||
+       ((target == GL_TEXTURE_RECTANGLE_NV ||
+         target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) {
+      return GL_TRUE;
+   }
+
+   format = _mesa_base_tex_format(ctx, internalFormat);
+   if (format < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glCopyTexImage%dD(internalFormat)", dimensions);
+      return GL_TRUE;
+   }
+
+   if (!_mesa_source_buffer_exists(ctx, format)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glCopyTexImage%dD(missing readbuffer)", dimensions);
+      return GL_TRUE;
+   }
+
+   /* Do size, level checking */
+   sizeOK = (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB)
+      ? (width == height) : 1;
+
+   sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
+                                                    internalFormat, format,
+                                                    type, width, height,
+                                                    1, border);
+
+   if (!sizeOK) {
+      if (dimensions == 1) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glCopyTexImage1D(width=%d)", width);
+      }
+      else {
+         ASSERT(dimensions == 2);
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glCopyTexImage2D(width=%d, height=%d)", width, height);
+      }
+      return GL_TRUE;
+   }
+
+   if (_mesa_is_compressed_format(ctx, internalFormat)) {
+      if (!target_can_be_compressed(ctx, target, internalFormat)) {
+         _mesa_error(ctx, GL_INVALID_ENUM,
+                     "glCopyTexImage%dD(target)", dimensions);
+         return GL_TRUE;
+      }
+      if (border != 0) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glCopyTexImage%dD(border!=0)", dimensions);
+         return GL_TRUE;
+      }
+   }
+   else if (_mesa_is_depth_format(internalFormat)) {
+      /* make sure we have depth/stencil buffers */
+      if (!ctx->ReadBuffer->_DepthBuffer) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glCopyTexImage%dD(no depth)", dimensions);
+         return GL_TRUE;
+      }
+   }
+   else if (_mesa_is_depthstencil_format(internalFormat)) {
+      /* make sure we have depth/stencil buffers */
+      if (!ctx->ReadBuffer->_DepthBuffer || !ctx->ReadBuffer->_StencilBuffer) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glCopyTexImage%dD(no depth/stencil buffer)", dimensions);
+         return GL_TRUE;
+      }
+   }
+
+   /* if we get here, the parameters are OK */
+   return GL_FALSE;
+}
+
+
+/**
+ * Test glCopyTexSubImage[12]D() parameters for errors.
+ * Note that this is the first part of error checking.
+ * See also copytexsubimage_error_check2() below for the second part.
+ * 
+ * \param ctx GL context.
+ * \param dimensions texture image dimensions (must be 1, 2 or 3).
+ * \param target texture target given by the user.
+ * \param level image level given by the user.
+ * 
+ * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
+ */
+static GLboolean
+copytexsubimage_error_check1( struct gl_context *ctx, GLuint dimensions,
+                              GLenum target, GLint level)
+{
+   /* Check that the source buffer is complete */
+   if (ctx->ReadBuffer->Name) {
+      if (ctx->ReadBuffer->_Status == 0) {
+         _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
+      }
+      if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+         _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+                     "glCopyTexImage%dD(invalid readbuffer)", dimensions);
+         return GL_TRUE;
+      }
+   }
+
+   /* check target (proxies not allowed) */
+   if (!legal_texsubimage_target(ctx, dimensions, target)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexSubImage%uD(target=%s)",
+                  dimensions, _mesa_lookup_enum_by_nr(target));
+      return GL_TRUE;
+   }
+
+   /* Check level */
+   if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glCopyTexSubImage%dD(level=%d)", dimensions, level);
+      return GL_TRUE;
+   }
+
+   return GL_FALSE;
+}
+
+
+/**
+ * Second part of error checking for glCopyTexSubImage[12]D().
+ * \param xoffset sub-image x offset given by the user.
+ * \param yoffset sub-image y offset given by the user.
+ * \param zoffset sub-image z offset given by the user.
+ * \param width image width given by the user.
+ * \param height image height given by the user.
+ */
+static GLboolean
+copytexsubimage_error_check2( struct gl_context *ctx, GLuint dimensions,
+			      GLenum target, GLint level,
+			      GLint xoffset, GLint yoffset, GLint zoffset,
+			      GLsizei width, GLsizei height,
+			      const struct gl_texture_image *teximage )
+{
+   /* check that dest tex image exists */
+   if (!teximage) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glCopyTexSubImage%dD(undefined texture level: %d)",
+                  dimensions, level);
+      return GL_TRUE;
+   }
+
+   /* Check size */
+   if (width < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glCopyTexSubImage%dD(width=%d)", dimensions, width);
+      return GL_TRUE;
+   }
+   if (dimensions > 1 && height < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glCopyTexSubImage%dD(height=%d)", dimensions, height);
+      return GL_TRUE;
+   }
+
+   /* check x/y offsets */
+   if (xoffset < -((GLint)teximage->Border)) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glCopyTexSubImage%dD(xoffset=%d)", dimensions, xoffset);
+      return GL_TRUE;
+   }
+   if (xoffset + width > (GLint) (teximage->Width + teximage->Border)) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glCopyTexSubImage%dD(xoffset+width)", dimensions);
+      return GL_TRUE;
+   }
+   if (dimensions > 1) {
+      if (yoffset < -((GLint)teximage->Border)) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glCopyTexSubImage%dD(yoffset=%d)", dimensions, yoffset);
+         return GL_TRUE;
+      }
+      /* NOTE: we're adding the border here, not subtracting! */
+      if (yoffset + height > (GLint) (teximage->Height + teximage->Border)) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glCopyTexSubImage%dD(yoffset+height)", dimensions);
+         return GL_TRUE;
+      }
+   }
+
+   /* check z offset */
+   if (dimensions > 2) {
+      if (zoffset < -((GLint)teximage->Border)) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glCopyTexSubImage%dD(zoffset)", dimensions);
+         return GL_TRUE;
+      }
+      if (zoffset > (GLint) (teximage->Depth + teximage->Border)) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glCopyTexSubImage%dD(zoffset+depth)", dimensions);
+         return GL_TRUE;
+      }
+   }
+
+   if (_mesa_is_format_compressed(teximage->TexFormat)) {
+      /* offset must be multiple of 4 */
+      if ((xoffset & 3) || (yoffset & 3)) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glCopyTexSubImage%dD(xoffset or yoffset)", dimensions);
+         return GL_TRUE;
+      }
+      /* size must be multiple of 4 */
+      if ((width & 3) != 0 && (GLuint) width != teximage->Width) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glCopyTexSubImage%dD(width)", dimensions);
+         return GL_TRUE;
+      }         
+      if ((height & 3) != 0 && (GLuint) height != teximage->Height) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glCopyTexSubImage%dD(height)", dimensions);
+         return GL_TRUE;
+      }         
+   }
+
+   if (teximage->InternalFormat == GL_YCBCR_MESA) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glCopyTexSubImage2D");
+      return GL_TRUE;
+   }
+
+   if (!_mesa_source_buffer_exists(ctx, teximage->_BaseFormat)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glCopyTexSubImage%dD(missing readbuffer, format=0x%x)",
+                  dimensions, teximage->_BaseFormat);
+      return GL_TRUE;
+   }
+
+   if (teximage->_BaseFormat == GL_DEPTH_COMPONENT) {
+      if (!ctx->ReadBuffer->_DepthBuffer) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glCopyTexSubImage%dD(no depth buffer)",
+                     dimensions);
+         return GL_TRUE;
+      }
+   }
+   else if (teximage->_BaseFormat == GL_DEPTH_STENCIL_EXT) {
+      if (!ctx->ReadBuffer->_DepthBuffer || !ctx->ReadBuffer->_StencilBuffer) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glCopyTexSubImage%dD(no depth/stencil buffer)",
+                     dimensions);
+         return GL_TRUE;
+      }
+   }
+
+   /* If copying into an integer texture, the source buffer must also be
+    * integer-valued.
+    */
+   if (_mesa_is_format_integer_color(teximage->TexFormat)) {
+      struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
+      if (!_mesa_is_format_integer_color(rb->Format)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glCopyTexSubImage%dD(source buffer is not integer format)",
+                  dimensions);
+         return GL_TRUE;
+      }
+   }
+
+   /* if we get here, the parameters are OK */
+   return GL_FALSE;
+}
+
+
+/** Callback info for walking over FBO hash table */
+struct cb_info
+{
+   struct gl_context *ctx;
+   struct gl_texture_object *texObj;
+   GLuint level, face;
+};
+
+
+/**
+ * Check render to texture callback.  Called from _mesa_HashWalk().
+ */
+static void
+check_rtt_cb(GLuint key, void *data, void *userData)
+{
+   struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
+   const struct cb_info *info = (struct cb_info *) userData;
+   struct gl_context *ctx = info->ctx;
+   const struct gl_texture_object *texObj = info->texObj;
+   const GLuint level = info->level, face = info->face;
+
+   /* If this is a user-created FBO */
+   if (fb->Name) {
+      GLuint i;
+      /* check if any of the FBO's attachments point to 'texObj' */
+      for (i = 0; i < BUFFER_COUNT; i++) {
+         struct gl_renderbuffer_attachment *att = fb->Attachment + i;
+         if (att->Type == GL_TEXTURE &&
+             att->Texture == texObj &&
+             att->TextureLevel == level &&
+             att->CubeMapFace == face) {
+            ASSERT(att->Texture->Image[att->CubeMapFace][att->TextureLevel]);
+            /* Tell driver about the new renderbuffer texture */
+            ctx->Driver.RenderTexture(ctx, ctx->DrawBuffer, att);
+            /* Mark fb status as indeterminate to force re-validation */
+            fb->_Status = 0;
+         }
+      }
+   }
+}
+
+
+/**
+ * When a texture image is specified we have to check if it's bound to
+ * any framebuffer objects (render to texture) in order to detect changes
+ * in size or format since that effects FBO completeness.
+ * Any FBOs rendering into the texture must be re-validated.
+ */
+static void
+update_fbo_texture(struct gl_context *ctx, struct gl_texture_object *texObj,
+                   GLuint face, GLuint level)
+{
+   /* Only check this texture if it's been marked as RenderToTexture */
+   if (texObj->_RenderToTexture) {
+      struct cb_info info;
+      info.ctx = ctx;
+      info.texObj = texObj;
+      info.level = level;
+      info.face = face;
+      _mesa_HashWalk(ctx->Shared->FrameBuffers, check_rtt_cb, &info);
+   }
+}
+
+
+/**
+ * If the texture object's GenerateMipmap flag is set and we've
+ * changed the texture base level image, regenerate the rest of the
+ * mipmap levels now.
+ */
+static INLINE void
+check_gen_mipmap(struct gl_context *ctx, GLenum target,
+                 struct gl_texture_object *texObj, GLint level)
+{
+   ASSERT(target != GL_TEXTURE_CUBE_MAP);
+   if (texObj->GenerateMipmap &&
+       level == texObj->BaseLevel &&
+       level < texObj->MaxLevel) {
+      ASSERT(ctx->Driver.GenerateMipmap);
+      ctx->Driver.GenerateMipmap(ctx, target, texObj);
+   }
+}
+
+
+/** Debug helper: override the user-requested internal format */
+static GLenum
+override_internal_format(GLenum internalFormat, GLint width, GLint height)
+{
+#if 0
+   if (internalFormat == GL_RGBA16F_ARB ||
+       internalFormat == GL_RGBA32F_ARB) {
+      printf("Convert rgba float tex to int %d x %d\n", width, height);
+      return GL_RGBA;
+   }
+   else if (internalFormat == GL_RGB16F_ARB ||
+            internalFormat == GL_RGB32F_ARB) {
+      printf("Convert rgb float tex to int %d x %d\n", width, height);
+      return GL_RGB;
+   }
+   else if (internalFormat == GL_LUMINANCE_ALPHA16F_ARB ||
+            internalFormat == GL_LUMINANCE_ALPHA32F_ARB) {
+      printf("Convert luminance float tex to int %d x %d\n", width, height);
+      return GL_LUMINANCE_ALPHA;
+   }
+   else if (internalFormat == GL_LUMINANCE16F_ARB ||
+            internalFormat == GL_LUMINANCE32F_ARB) {
+      printf("Convert luminance float tex to int %d x %d\n", width, height);
+      return GL_LUMINANCE;
+   }
+   else if (internalFormat == GL_ALPHA16F_ARB ||
+            internalFormat == GL_ALPHA32F_ARB) {
+      printf("Convert luminance float tex to int %d x %d\n", width, height);
+      return GL_ALPHA;
+   }
+   /*
+   else if (internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) {
+      internalFormat = GL_RGBA;
+   }
+   */
+   else {
+      return internalFormat;
+   }
+#else
+   return internalFormat;
+#endif
+}
+
+
+/**
+ * Choose the actual hardware format for a texture image.
+ * Try to use the same format as the previous image level when possible.
+ * Otherwise, ask the driver for the best format.
+ * It's important to try to choose a consistant format for all levels
+ * for efficient texture memory layout/allocation.  In particular, this
+ * comes up during automatic mipmap generation.
+ */
+gl_format
+_mesa_choose_texture_format(struct gl_context *ctx,
+                            struct gl_texture_object *texObj,
+                            GLenum target, GLint level,
+                            GLenum internalFormat, GLenum format, GLenum type)
+{
+   gl_format f;
+
+   /* see if we've already chosen a format for the previous level */
+   if (level > 0) {
+      struct gl_texture_image *prevImage =
+	 _mesa_select_tex_image(ctx, texObj, target, level - 1);
+      /* See if the prev level is defined and has an internal format which
+       * matches the new internal format.
+       */
+      if (prevImage &&
+          prevImage->Width > 0 &&
+          prevImage->InternalFormat == internalFormat) {
+         /* use the same format */
+         ASSERT(prevImage->TexFormat != MESA_FORMAT_NONE);
+         return prevImage->TexFormat;
+      }
+   }
+
+   /* choose format from scratch */
+   f = ctx->Driver.ChooseTextureFormat(ctx, internalFormat, format, type);
+   ASSERT(f != MESA_FORMAT_NONE);
+   return f;
+}
+
+
+/**
+ * Common code to implement all the glTexImage1D/2D/3D functions.
+ */
+static void
+teximage(struct gl_context *ctx, GLuint dims,
+         GLenum target, GLint level, GLint internalFormat,
+         GLsizei width, GLsizei height, GLsizei depth,
+         GLint border, GLenum format, GLenum type,
+         const GLvoid *pixels)
+{
+   GLboolean error;
+
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
+      _mesa_debug(ctx, "glTexImage%uD %s %d %s %d %d %d %d %s %s %p\n",
+                  dims,
+                  _mesa_lookup_enum_by_nr(target), level,
+                  _mesa_lookup_enum_by_nr(internalFormat),
+                  width, height, depth, border,
+                  _mesa_lookup_enum_by_nr(format),
+                  _mesa_lookup_enum_by_nr(type), pixels);
+
+   internalFormat = override_internal_format(internalFormat, width, height);
+
+   /* target error checking */
+   if (!legal_teximage_target(ctx, dims, target)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage%uD(target=%s)",
+                  dims, _mesa_lookup_enum_by_nr(target));
+      return;
+   }
+
+   /* general error checking */
+   error = texture_error_check(ctx, dims, target, level, internalFormat,
+                               format, type, width, height, depth, border);
+
+   if (_mesa_is_proxy_texture(target)) {
+      /* Proxy texture: just clear or set state depending on error checking */
+      struct gl_texture_image *texImage =
+         _mesa_get_proxy_tex_image(ctx, target, level);
+
+      if (error) {
+         /* when error, clear all proxy texture image parameters */
+         if (texImage)
+            clear_teximage_fields(texImage);
+      }
+      else {
+         /* no error, set the tex image parameters */
+         struct gl_texture_object *texObj =
+            _mesa_get_current_tex_object(ctx, target);
+         gl_format texFormat = _mesa_choose_texture_format(ctx, texObj,
+                                                           target, level,
+                                                           internalFormat,
+                                                           format, type);
+
+         if (legal_texture_size(ctx, texFormat, width, height, depth)) {
+            _mesa_init_teximage_fields(ctx, target, texImage, width, height,
+                                       depth, border, internalFormat,
+                                       texFormat);
+         }
+         else if (texImage) {
+            clear_teximage_fields(texImage);
+         }
+      }
+   }
+   else {
+      /* non-proxy target */
+      const GLuint face = _mesa_tex_target_to_face(target);
+      struct gl_texture_object *texObj;
+      struct gl_texture_image *texImage;
+
+      if (error) {
+         return;   /* error was recorded */
+      }
+
+      if (ctx->NewState & _MESA_NEW_TRANSFER_STATE)
+	 _mesa_update_state(ctx);
+
+      texObj = _mesa_get_current_tex_object(ctx, target);
+
+      _mesa_lock_texture(ctx, texObj);
+      {
+	 texImage = _mesa_get_tex_image(ctx, texObj, target, level);
+
+	 if (!texImage) {
+	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
+	 }
+         else {
+            gl_format texFormat;
+
+            if (texImage->Data) {
+               ctx->Driver.FreeTexImageData( ctx, texImage );
+            }
+
+            ASSERT(texImage->Data == NULL);
+            texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
+                                                    internalFormat, format,
+                                                    type);
+
+            if (legal_texture_size(ctx, texFormat, width, height, depth)) {
+               _mesa_init_teximage_fields(ctx, target, texImage,
+                                          width, height, depth,
+                                          border, internalFormat, texFormat);
+
+               /* Give the texture to the driver.  <pixels> may be null. */
+               ASSERT(ctx->Driver.TexImage3D);
+               switch (dims) {
+               case 1:
+                  ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
+                                         width, border, format,
+                                         type, pixels, &ctx->Unpack, texObj,
+                                         texImage);
+                  break;
+               case 2:
+                  ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
+                                         width, height, border, format,
+                                         type, pixels, &ctx->Unpack, texObj,
+                                         texImage);
+                  break;
+               case 3:
+                  ctx->Driver.TexImage3D(ctx, target, level, internalFormat,
+                                         width, height, depth, border, format,
+                                         type, pixels, &ctx->Unpack, texObj,
+                                         texImage);
+                  break;
+               default:
+                  _mesa_problem(ctx, "invalid dims=%u in teximage()", dims);
+               }
+
+               check_gen_mipmap(ctx, target, texObj, level);
+
+               update_fbo_texture(ctx, texObj, face, level);
+
+               /* state update */
+               texObj->_Complete = GL_FALSE;
+               ctx->NewState |= _NEW_TEXTURE;
+            }
+            else {
+               _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
+            }
+         }
+      }
+      _mesa_unlock_texture(ctx, texObj);
+   }
+}
+
+
+/*
+ * Called from the API.  Note that width includes the border.
+ */
+void GLAPIENTRY
+_mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat,
+                  GLsizei width, GLint border, GLenum format,
+                  GLenum type, const GLvoid *pixels )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   teximage(ctx, 1, target, level, internalFormat, width, 1, 1,
+            border, format, type, pixels);
+}
+
+
+void GLAPIENTRY
+_mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat,
+                  GLsizei width, GLsizei height, GLint border,
+                  GLenum format, GLenum type,
+                  const GLvoid *pixels )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   teximage(ctx, 2, target, level, internalFormat, width, height, 1,
+            border, format, type, pixels);
+}
+
+
+/*
+ * Called by the API or display list executor.
+ * Note that width and height include the border.
+ */
+void GLAPIENTRY
+_mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat,
+                  GLsizei width, GLsizei height, GLsizei depth,
+                  GLint border, GLenum format, GLenum type,
+                  const GLvoid *pixels )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   teximage(ctx, 3, target, level, internalFormat, width, height, depth,
+            border, format, type, pixels);
+}
+
+
+void GLAPIENTRY
+_mesa_TexImage3DEXT( GLenum target, GLint level, GLenum internalFormat,
+                     GLsizei width, GLsizei height, GLsizei depth,
+                     GLint border, GLenum format, GLenum type,
+                     const GLvoid *pixels )
+{
+   _mesa_TexImage3D(target, level, (GLint) internalFormat, width, height,
+                    depth, border, format, type, pixels);
+}
+
+
+#if FEATURE_OES_EGL_image
+void GLAPIENTRY
+_mesa_EGLImageTargetTexture2DOES (GLenum target, GLeglImageOES image)
+{
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (!ctx->Extensions.OES_EGL_image) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glEGLImageTargetTexture2DOES(unsupported)");
+      return;
+   }
+
+   if (target != GL_TEXTURE_2D) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+		  "glEGLImageTargetTexture2D(target=%d)", target);
+      return;
+   }
+
+   if (ctx->NewState & _MESA_NEW_TRANSFER_STATE)
+      _mesa_update_state(ctx);
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+   _mesa_lock_texture(ctx, texObj);
+
+   texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
+   if (!texImage) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glEGLImageTargetTexture2D");
+   } else {
+      if (texImage->Data)
+	 ctx->Driver.FreeTexImageData( ctx, texImage );
+
+      ASSERT(texImage->Data == NULL);
+      ctx->Driver.EGLImageTargetTexture2D(ctx, target,
+					  texObj, texImage, image);
+
+      /* state update */
+      texObj->_Complete = GL_FALSE;
+      ctx->NewState |= _NEW_TEXTURE;
+   }
+   _mesa_unlock_texture(ctx, texObj);
+
+}
+#endif
+
+
+
+/**
+ * Implement all the glTexSubImage1/2/3D() functions.
+ */
+static void
+texsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
+            GLint xoffset, GLint yoffset, GLint zoffset,
+            GLsizei width, GLsizei height, GLsizei depth,
+            GLenum format, GLenum type, const GLvoid *pixels )
+{
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
+      _mesa_debug(ctx, "glTexSubImage%uD %s %d %d %d %d %d %d %d %s %s %p\n",
+                  dims,
+                  _mesa_lookup_enum_by_nr(target), level,
+                  xoffset, yoffset, zoffset, width, height, depth,
+                  _mesa_lookup_enum_by_nr(format),
+                  _mesa_lookup_enum_by_nr(type), pixels);
+
+   /* check target (proxies not allowed) */
+   if (!legal_texsubimage_target(ctx, dims, target)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage%uD(target=%s)",
+                  dims, _mesa_lookup_enum_by_nr(target));
+      return;
+   }       
+
+   if (ctx->NewState & _MESA_NEW_TRANSFER_STATE)
+      _mesa_update_state(ctx);
+
+   if (subtexture_error_check(ctx, dims, target, level, xoffset, yoffset, zoffset,
+                              width, height, depth, format, type)) {
+      return;   /* error was detected */
+   }
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+
+      if (subtexture_error_check2(ctx, dims, target, level,
+                                  xoffset, yoffset, zoffset,
+				  width, height, depth,
+                                  format, type, texImage)) {
+         /* error was recorded */
+      }
+      else if (width > 0 && height > 0 && height > 0) {
+         /* If we have a border, offset=-1 is legal.  Bias by border width. */
+         switch (dims) {
+         case 3:
+            zoffset += texImage->Border;
+            /* fall-through */
+         case 2:
+            yoffset += texImage->Border;
+            /* fall-through */
+         case 1:
+            xoffset += texImage->Border;
+         }
+
+         switch (dims) {
+         case 1:
+            ctx->Driver.TexSubImage1D(ctx, target, level,
+                                      xoffset, width,
+                                      format, type, pixels,
+                                      &ctx->Unpack, texObj, texImage );
+            break;
+         case 2:
+            ctx->Driver.TexSubImage2D(ctx, target, level,
+                                      xoffset, yoffset, width, height,
+                                      format, type, pixels,
+                                      &ctx->Unpack, texObj, texImage );
+            break;
+         case 3:
+            ctx->Driver.TexSubImage3D(ctx, target, level,
+                                      xoffset, yoffset, zoffset,
+                                      width, height, depth,
+                                      format, type, pixels,
+                                      &ctx->Unpack, texObj, texImage );
+            break;
+         default:
+            _mesa_problem(ctx, "unexpected dims in subteximage()");
+         }
+
+         check_gen_mipmap(ctx, target, texObj, level);
+
+         ctx->NewState |= _NEW_TEXTURE;
+      }
+   }
+   _mesa_unlock_texture(ctx, texObj);
+}
+
+
+void GLAPIENTRY
+_mesa_TexSubImage1D( GLenum target, GLint level,
+                     GLint xoffset, GLsizei width,
+                     GLenum format, GLenum type,
+                     const GLvoid *pixels )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   texsubimage(ctx, 1, target, level,
+               xoffset, 0, 0,
+               width, 1, 1,
+               format, type, pixels);
+}
+
+
+void GLAPIENTRY
+_mesa_TexSubImage2D( GLenum target, GLint level,
+                     GLint xoffset, GLint yoffset,
+                     GLsizei width, GLsizei height,
+                     GLenum format, GLenum type,
+                     const GLvoid *pixels )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   texsubimage(ctx, 2, target, level,
+               xoffset, yoffset, 0,
+               width, height, 1,
+               format, type, pixels);
+}
+
+
+
+void GLAPIENTRY
+_mesa_TexSubImage3D( GLenum target, GLint level,
+                     GLint xoffset, GLint yoffset, GLint zoffset,
+                     GLsizei width, GLsizei height, GLsizei depth,
+                     GLenum format, GLenum type,
+                     const GLvoid *pixels )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   texsubimage(ctx, 3, target, level,
+               xoffset, yoffset, zoffset,
+               width, height, depth,
+               format, type, pixels);
+}
+
+
+
+/**
+ * Implement the glCopyTexImage1/2D() functions.
+ */
+static void
+copyteximage(struct gl_context *ctx, GLuint dims,
+             GLenum target, GLint level, GLenum internalFormat,
+             GLint x, GLint y, GLsizei width, GLsizei height, GLint border )
+{
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+   const GLuint face = _mesa_tex_target_to_face(target);
+
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
+      _mesa_debug(ctx, "glCopyTexImage%uD %s %d %s %d %d %d %d %d\n",
+                  dims,
+                  _mesa_lookup_enum_by_nr(target), level,
+                  _mesa_lookup_enum_by_nr(internalFormat),
+                  x, y, width, height, border);
+
+   if (ctx->NewState & NEW_COPY_TEX_STATE)
+      _mesa_update_state(ctx);
+
+   if (copytexture_error_check(ctx, dims, target, level, internalFormat,
+                               width, height, border))
+      return;
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_get_tex_image(ctx, texObj, target, level);
+
+      if (!texImage) {
+	 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
+      }
+      else {
+         gl_format texFormat;
+
+         if (texImage->Data) {
+            ctx->Driver.FreeTexImageData( ctx, texImage );
+         }
+
+         ASSERT(texImage->Data == NULL);
+
+         texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
+                                                 internalFormat, GL_NONE,
+                                                 GL_NONE);
+
+         if (legal_texture_size(ctx, texFormat, width, height, 1)) {
+            _mesa_init_teximage_fields(ctx, target, texImage, width, height, 1,
+                                       border, internalFormat, texFormat);
+
+            ASSERT(ctx->Driver.CopyTexImage2D);
+            if (dims == 1)
+               ctx->Driver.CopyTexImage1D(ctx, target, level, internalFormat,
+                                          x, y, width, border);
+            else
+               ctx->Driver.CopyTexImage2D(ctx, target, level, internalFormat,
+                                          x, y, width, height, border);
+
+            check_gen_mipmap(ctx, target, texObj, level);
+
+            update_fbo_texture(ctx, texObj, face, level);
+
+            /* state update */
+            texObj->_Complete = GL_FALSE;
+            ctx->NewState |= _NEW_TEXTURE;
+         }
+         else {
+            _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
+         }
+      }
+   }
+   _mesa_unlock_texture(ctx, texObj);
+}
+
+
+
+void GLAPIENTRY
+_mesa_CopyTexImage1D( GLenum target, GLint level,
+                      GLenum internalFormat,
+                      GLint x, GLint y,
+                      GLsizei width, GLint border )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   copyteximage(ctx, 1, target, level, internalFormat, x, y, width, 1, border);
+}
+
+
+
+void GLAPIENTRY
+_mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat,
+                      GLint x, GLint y, GLsizei width, GLsizei height,
+                      GLint border )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   copyteximage(ctx, 2, target, level, internalFormat,
+                x, y, width, height, border);
+}
+
+
+
+/**
+ * Implementation for glCopyTexSubImage1/2/3D() functions.
+ */
+static void
+copytexsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
+                GLint xoffset, GLint yoffset, GLint zoffset,
+                GLint x, GLint y, GLsizei width, GLsizei height)
+{
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
+      _mesa_debug(ctx, "glCopyTexSubImage%uD %s %d %d %d %d %d %d %d %d\n",
+                  dims,
+                  _mesa_lookup_enum_by_nr(target),
+                  level, xoffset, yoffset, zoffset, x, y, width, height);
+
+   if (ctx->NewState & NEW_COPY_TEX_STATE)
+      _mesa_update_state(ctx);
+
+   if (copytexsubimage_error_check1(ctx, dims, target, level))
+      return;
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+
+      if (copytexsubimage_error_check2(ctx, dims, target, level, xoffset, yoffset,
+				       zoffset, width, height, texImage)) {
+         /* error was recored */
+      }
+      else {
+         /* If we have a border, offset=-1 is legal.  Bias by border width. */
+         switch (dims) {
+         case 3:
+            zoffset += texImage->Border;
+            /* fall-through */
+         case 2:
+            yoffset += texImage->Border;
+            /* fall-through */
+         case 1:
+            xoffset += texImage->Border;
+         }
+
+         if (_mesa_clip_copytexsubimage(ctx, &xoffset, &yoffset, &x, &y,
+                                        &width, &height)) {
+            switch (dims) {
+            case 1:
+               ctx->Driver.CopyTexSubImage1D(ctx, target, level,
+                                             xoffset, x, y, width);
+               break;
+            case 2:
+               ctx->Driver.CopyTexSubImage2D(ctx, target, level,
+                                             xoffset, yoffset,
+                                             x, y, width, height);
+               break;
+            case 3:
+               ctx->Driver.CopyTexSubImage3D(ctx, target, level,
+                                             xoffset, yoffset, zoffset,
+                                             x, y, width, height);
+               break;
+            default:
+               _mesa_problem(ctx, "bad dims in copytexsubimage()");
+            }
+
+            check_gen_mipmap(ctx, target, texObj, level);
+
+            ctx->NewState |= _NEW_TEXTURE;
+         }
+      }
+   }
+   _mesa_unlock_texture(ctx, texObj);
+}
+
+
+void GLAPIENTRY
+_mesa_CopyTexSubImage1D( GLenum target, GLint level,
+                         GLint xoffset, GLint x, GLint y, GLsizei width )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   copytexsubimage(ctx, 1, target, level, xoffset, 0, 0, x, y, width, 1);
+}
+
+
+
+void GLAPIENTRY
+_mesa_CopyTexSubImage2D( GLenum target, GLint level,
+                         GLint xoffset, GLint yoffset,
+                         GLint x, GLint y, GLsizei width, GLsizei height )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   copytexsubimage(ctx, 2, target, level, xoffset, yoffset, 0, x, y,
+                   width, height);
+}
+
+
+
+void GLAPIENTRY
+_mesa_CopyTexSubImage3D( GLenum target, GLint level,
+                         GLint xoffset, GLint yoffset, GLint zoffset,
+                         GLint x, GLint y, GLsizei width, GLsizei height )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   copytexsubimage(ctx, 3, target, level, xoffset, yoffset, zoffset,
+                   x, y, width, height);
+}
+
+
+
+
+/**********************************************************************/
+/******                   Compressed Textures                    ******/
+/**********************************************************************/
+
+
+/**
+ * Return expected size of a compressed texture.
+ */
+static GLuint
+compressed_tex_size(GLsizei width, GLsizei height, GLsizei depth,
+                    GLenum glformat)
+{
+   gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
+   return _mesa_format_image_size(mesaFormat, width, height, depth);
+}
+
+
+/*
+ * Return compressed texture block size, in pixels.
+ */
+static void
+get_compressed_block_size(GLenum glformat, GLuint *bw, GLuint *bh)
+{
+   gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
+   _mesa_get_format_block_size(mesaFormat, bw, bh);
+}
+
+
+/**
+ * Error checking for glCompressedTexImage[123]D().
+ * \return error code or GL_NO_ERROR.
+ */
+static GLenum
+compressed_texture_error_check(struct gl_context *ctx, GLint dimensions,
+                               GLenum target, GLint level,
+                               GLenum internalFormat, GLsizei width,
+                               GLsizei height, GLsizei depth, GLint border,
+                               GLsizei imageSize)
+{
+   const GLenum proxyTarget = get_proxy_target(target);
+   const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
+   GLint expectedSize;
+
+   /* check level */
+   if (level < 0 || level >= maxLevels)
+      return GL_INVALID_VALUE;
+
+   if (!target_can_be_compressed(ctx, target, internalFormat)) {
+      return GL_INVALID_ENUM;
+   }
+
+   /* This will detect any invalid internalFormat value */
+   if (!_mesa_is_compressed_format(ctx, internalFormat))
+      return GL_INVALID_ENUM;
+
+   /* This should really never fail */
+   if (_mesa_base_tex_format(ctx, internalFormat) < 0)
+      return GL_INVALID_ENUM;
+
+   /* No compressed formats support borders at this time */
+   if (border != 0)
+      return GL_INVALID_VALUE;
+
+   /* For cube map, width must equal height */
+   if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
+       target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB && width != height)
+      return GL_INVALID_VALUE;
+
+   /* check image size against compression block size */
+   {
+      gl_format texFormat =
+         ctx->Driver.ChooseTextureFormat(ctx, internalFormat,
+                                         GL_NONE, GL_NONE);
+      GLuint bw, bh;
+
+      _mesa_get_format_block_size(texFormat, &bw, &bh);
+      if ((width > bw && width % bw > 0) ||
+          (height > bh && height % bh > 0)) {
+         /*
+          * Per GL_ARB_texture_compression:  GL_INVALID_OPERATION is
+          * generated [...] if any parameter combinations are not
+          * supported by the specific compressed internal format. 
+          */
+         return GL_INVALID_OPERATION;
+      }
+   }
+
+   /* check image sizes */
+   if (!ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
+                                      internalFormat, GL_NONE, GL_NONE,
+                                      width, height, depth, border)) {
+      /* See error comment above */
+      return GL_INVALID_OPERATION;
+   }
+
+   /* check image size in bytes */
+   expectedSize = compressed_tex_size(width, height, depth, internalFormat);
+   if (expectedSize != imageSize) {
+      /* Per GL_ARB_texture_compression:  GL_INVALID_VALUE is generated [...]
+       * if <imageSize> is not consistent with the format, dimensions, and
+       * contents of the specified image.
+       */
+      return GL_INVALID_VALUE;
+   }
+
+   return GL_NO_ERROR;
+}
+
+
+/**
+ * Error checking for glCompressedTexSubImage[123]D().
+ * \warning  There are some bad assumptions here about the size of compressed
+ *           texture tiles (multiple of 4) used to test the validity of the
+ *           offset and size parameters.
+ * \return error code or GL_NO_ERROR.
+ */
+static GLenum
+compressed_subtexture_error_check(struct gl_context *ctx, GLint dimensions,
+                                  GLenum target, GLint level,
+                                  GLint xoffset, GLint yoffset, GLint zoffset,
+                                  GLsizei width, GLsizei height, GLsizei depth,
+                                  GLenum format, GLsizei imageSize)
+{
+   GLint expectedSize, maxLevels = 0, maxTextureSize;
+   GLuint bw, bh;
+   (void) zoffset;
+
+   if (dimensions == 1) {
+      /* 1D compressed textures not allowed */
+      return GL_INVALID_ENUM;
+   }
+   else if (dimensions == 2) {
+      if (target == GL_PROXY_TEXTURE_2D) {
+         maxLevels = ctx->Const.MaxTextureLevels;
+      }
+      else if (target == GL_TEXTURE_2D) {
+         maxLevels = ctx->Const.MaxTextureLevels;
+      }
+      else if (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {
+         if (!ctx->Extensions.ARB_texture_cube_map)
+            return GL_INVALID_ENUM; /*target*/
+         maxLevels = ctx->Const.MaxCubeTextureLevels;
+      }
+      else if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
+               target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) {
+         if (!ctx->Extensions.ARB_texture_cube_map)
+            return GL_INVALID_ENUM; /*target*/
+         maxLevels = ctx->Const.MaxCubeTextureLevels;
+      }
+      else {
+         return GL_INVALID_ENUM; /*target*/
+      }
+   }
+   else if (dimensions == 3) {
+      /* 3D compressed textures not allowed */
+      return GL_INVALID_ENUM;
+   }
+
+   maxTextureSize = 1 << (maxLevels - 1);
+
+   /* this will catch any invalid compressed format token */
+   if (!_mesa_is_compressed_format(ctx, format))
+      return GL_INVALID_ENUM;
+
+   if (width < 1 || width > maxTextureSize)
+      return GL_INVALID_VALUE;
+
+   if ((height < 1 || height > maxTextureSize)
+       && dimensions > 1)
+      return GL_INVALID_VALUE;
+
+   if (level < 0 || level >= maxLevels)
+      return GL_INVALID_VALUE;
+
+   /*
+    * do checks which depend on compression block size
+    */
+   get_compressed_block_size(format, &bw, &bh);
+
+   if ((xoffset % bw != 0) || (yoffset % bh != 0))
+      return GL_INVALID_VALUE;
+
+   if ((width % bw != 0) && width != 2 && width != 1)
+      return GL_INVALID_VALUE;
+
+   if ((height % bh != 0) && height != 2 && height != 1)
+      return GL_INVALID_VALUE;
+
+   expectedSize = compressed_tex_size(width, height, depth, format);
+   if (expectedSize != imageSize)
+      return GL_INVALID_VALUE;
+
+   return GL_NO_ERROR;
+}
+
+
+/**
+ * Do second part of glCompressedTexSubImage error checking.
+ * \return GL_TRUE if error found, GL_FALSE otherwise.
+ */
+static GLboolean
+compressed_subtexture_error_check2(struct gl_context *ctx, GLuint dims,
+                                   GLsizei width, GLsizei height,
+                                   GLsizei depth, GLenum format,
+                                   struct gl_texture_image *texImage)
+{
+
+   if ((GLint) format != texImage->InternalFormat) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glCompressedTexSubImage%uD(format=0x%x)", dims, format);
+      return GL_TRUE;
+   }
+
+   if (((width == 1 || width == 2) &&
+        width != (GLsizei) texImage->Width) ||
+       (width > (GLsizei) texImage->Width)) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glCompressedTexSubImage%uD(width=%d)", dims, width);
+      return GL_TRUE;
+   }
+
+   if (dims >= 2) {
+      if (((height == 1 || height == 2) &&
+           height != (GLsizei) texImage->Height) ||
+          (height > (GLsizei) texImage->Height)) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glCompressedTexSubImage%uD(height=%d)", dims, height);
+         return GL_TRUE;
+      }
+   }
+
+   if (dims >= 3) {
+      if (((depth == 1 || depth == 2) &&
+           depth != (GLsizei) texImage->Depth) ||
+          (depth > (GLsizei) texImage->Depth)) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glCompressedTexSubImage%uD(depth=%d)", dims, depth);
+         return GL_TRUE;
+      }
+   }
+
+   return GL_FALSE;
+}
+
+
+/**
+ * Implementation of the glCompressedTexImage1/2/3D() functions.
+ */
+static void
+compressedteximage(struct gl_context *ctx, GLuint dims,
+                   GLenum target, GLint level,
+                   GLenum internalFormat, GLsizei width,
+                   GLsizei height, GLsizei depth, GLint border,
+                   GLsizei imageSize, const GLvoid *data)
+{
+   GLenum error;
+
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
+      _mesa_debug(ctx,
+                  "glCompressedTexImage%uDARB %s %d %s %d %d %d %d %d %p\n",
+                  dims,
+                  _mesa_lookup_enum_by_nr(target), level,
+                  _mesa_lookup_enum_by_nr(internalFormat),
+                  width, height, depth, border, imageSize, data);
+
+   /* check target */
+   if (!legal_teximage_target(ctx, dims, target)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage%uD(target=%s)",
+                  dims, _mesa_lookup_enum_by_nr(target));
+      return;
+   }
+
+   error = compressed_texture_error_check(ctx, dims, target, level,
+                                          internalFormat, width, height, depth,
+                                          border, imageSize);
+
+#if FEATURE_ES
+   /* XXX this is kind of a hack */
+   if (error) {
+      _mesa_error(ctx, error, "glTexImage2D");
+      return;
+   }
+
+   if (dims == 2) {
+      switch (internalFormat) {
+      case GL_PALETTE4_RGB8_OES:
+      case GL_PALETTE4_RGBA8_OES:
+      case GL_PALETTE4_R5_G6_B5_OES:
+      case GL_PALETTE4_RGBA4_OES:
+      case GL_PALETTE4_RGB5_A1_OES:
+      case GL_PALETTE8_RGB8_OES:
+      case GL_PALETTE8_RGBA8_OES:
+      case GL_PALETTE8_R5_G6_B5_OES:
+      case GL_PALETTE8_RGBA4_OES:
+      case GL_PALETTE8_RGB5_A1_OES:
+         _mesa_cpal_compressed_teximage2d(target, level, internalFormat,
+                                          width, height, imageSize, data);
+         return;
+      }
+   }
+#endif
+
+   if (_mesa_is_proxy_texture(target)) {
+      /* Proxy texture: just check for errors and update proxy state */
+      struct gl_texture_image *texImage;
+
+      if (!error) {
+         struct gl_texture_object *texObj =
+            _mesa_get_current_tex_object(ctx, target);
+         gl_format texFormat =
+            _mesa_choose_texture_format(ctx, texObj, target, level,
+                                        internalFormat, GL_NONE, GL_NONE);
+         if (!legal_texture_size(ctx, texFormat, width, height, depth)) {
+            error = GL_OUT_OF_MEMORY;
+         }
+      }
+
+      texImage = _mesa_get_proxy_tex_image(ctx, target, level);
+      if (texImage) {
+         if (error) {
+            /* if error, clear all proxy texture image parameters */
+            clear_teximage_fields(texImage);
+         }
+         else {
+            /* no error: store the teximage parameters */
+            _mesa_init_teximage_fields(ctx, target, texImage, width, height,
+                                       depth, border, internalFormat,
+                                       MESA_FORMAT_NONE);
+         }
+      }
+   }
+   else {
+      /* non-proxy target */
+      struct gl_texture_object *texObj;
+      struct gl_texture_image *texImage;
+
+      if (error) {
+         _mesa_error(ctx, error, "glCompressedTexImage%uD", dims);
+         return;
+      }
+
+      texObj = _mesa_get_current_tex_object(ctx, target);
+
+      _mesa_lock_texture(ctx, texObj);
+      {
+	 texImage = _mesa_get_tex_image(ctx, texObj, target, level);
+	 if (!texImage) {
+	    _mesa_error(ctx, GL_OUT_OF_MEMORY,
+                        "glCompressedTexImage%uD", dims);
+	 }
+         else {
+            gl_format texFormat;
+
+            if (texImage->Data) {
+               ctx->Driver.FreeTexImageData( ctx, texImage );
+            }
+            ASSERT(texImage->Data == NULL);
+
+            texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
+                                                    internalFormat, GL_NONE,
+                                                    GL_NONE);
+
+            if (legal_texture_size(ctx, texFormat, width, height, depth)) {
+               _mesa_init_teximage_fields(ctx, target, texImage,
+                                          width, height, depth,
+                                          border, internalFormat, texFormat);
+
+               switch (dims) {
+               case 1:
+                  ASSERT(ctx->Driver.CompressedTexImage1D);
+                  ctx->Driver.CompressedTexImage1D(ctx, target, level,
+                                                   internalFormat,
+                                                   width,
+                                                   border, imageSize, data,
+                                                   texObj, texImage);
+                  break;
+               case 2:
+                  ASSERT(ctx->Driver.CompressedTexImage2D);
+                  ctx->Driver.CompressedTexImage2D(ctx, target, level,
+                                                   internalFormat,
+                                                   width, height,
+                                                   border, imageSize, data,
+                                                   texObj, texImage);
+                  break;
+               case 3:
+                  ASSERT(ctx->Driver.CompressedTexImage3D);
+                  ctx->Driver.CompressedTexImage3D(ctx, target, level,
+                                                   internalFormat,
+                                                   width, height, depth,
+                                                   border, imageSize, data,
+                                                   texObj, texImage);
+                  break;
+               default:
+                  _mesa_problem(ctx, "bad dims in compressedteximage");
+               }
+
+               check_gen_mipmap(ctx, target, texObj, level);
+
+               /* state update */
+               texObj->_Complete = GL_FALSE;
+               ctx->NewState |= _NEW_TEXTURE;
+            }
+            else {
+               _mesa_error(ctx, GL_OUT_OF_MEMORY,
+                           "glCompressedTexImage%uD", dims);
+            }
+         }
+      }
+      _mesa_unlock_texture(ctx, texObj);
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_CompressedTexImage1DARB(GLenum target, GLint level,
+                              GLenum internalFormat, GLsizei width,
+                              GLint border, GLsizei imageSize,
+                              const GLvoid *data)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   compressedteximage(ctx, 1, target, level, internalFormat,
+                      width, 1, 1, border, imageSize, data);
+}
+
+
+void GLAPIENTRY
+_mesa_CompressedTexImage2DARB(GLenum target, GLint level,
+                              GLenum internalFormat, GLsizei width,
+                              GLsizei height, GLint border, GLsizei imageSize,
+                              const GLvoid *data)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   compressedteximage(ctx, 2, target, level, internalFormat,
+                      width, height, 1, border, imageSize, data);
+}
+
+
+void GLAPIENTRY
+_mesa_CompressedTexImage3DARB(GLenum target, GLint level,
+                              GLenum internalFormat, GLsizei width,
+                              GLsizei height, GLsizei depth, GLint border,
+                              GLsizei imageSize, const GLvoid *data)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   compressedteximage(ctx, 3, target, level, internalFormat,
+                      width, height, depth, border, imageSize, data);
+}
+
+
+/**
+ * Common helper for glCompressedTexSubImage1/2/3D().
+ */
+static void
+compressed_tex_sub_image(GLuint dims, GLenum target, GLint level,
+                         GLint xoffset, GLint yoffset, GLint zoffset,
+                         GLsizei width, GLsizei height, GLsizei depth,
+                         GLenum format, GLsizei imageSize, const GLvoid *data)
+{
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+   GLenum error;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   error = compressed_subtexture_error_check(ctx, dims, target, level,
+                                             xoffset, 0, 0, /* pos */
+                                             width, height, depth,   /* size */
+                                             format, imageSize);
+   if (error) {
+      _mesa_error(ctx, error, "glCompressedTexSubImage%uD", dims);
+      return;
+   }
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+      assert(texImage);
+
+      if (compressed_subtexture_error_check2(ctx, dims, width, height, depth,
+                                             format, texImage)) {
+         /* error was recorded */
+      }
+      else if (width > 0 && height > 0 && depth > 0) {
+         switch (dims) {
+         case 1:
+            if (ctx->Driver.CompressedTexSubImage1D) {
+               ctx->Driver.CompressedTexSubImage1D(ctx, target, level,
+                                                   xoffset, width,
+                                                   format, imageSize, data,
+                                                   texObj, texImage);
+            }
+            break;
+         case 2:
+            if (ctx->Driver.CompressedTexSubImage2D) {
+               ctx->Driver.CompressedTexSubImage2D(ctx, target, level,
+                                                   xoffset, yoffset,
+                                                   width, height,
+                                                   format, imageSize, data,
+                                                   texObj, texImage);
+            }
+            break;
+         case 3:
+            if (ctx->Driver.CompressedTexSubImage3D) {
+               ctx->Driver.CompressedTexSubImage3D(ctx, target, level,
+                                                   xoffset, yoffset, zoffset,
+                                                   width, height, depth,
+                                                   format, imageSize, data,
+                                                   texObj, texImage);
+            }
+            break;
+         default:
+            ;
+         }
+
+         check_gen_mipmap(ctx, target, texObj, level);
+
+         ctx->NewState |= _NEW_TEXTURE;
+      }
+   }
+   _mesa_unlock_texture(ctx, texObj);
+}
+
+
+void GLAPIENTRY
+_mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset,
+                                 GLsizei width, GLenum format,
+                                 GLsizei imageSize, const GLvoid *data)
+{
+   compressed_tex_sub_image(1, target, level, xoffset, 0, 0, width, 1, 1,
+                            format, imageSize, data);
+}
+
+
+void GLAPIENTRY
+_mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset,
+                                 GLint yoffset, GLsizei width, GLsizei height,
+                                 GLenum format, GLsizei imageSize,
+                                 const GLvoid *data)
+{
+   compressed_tex_sub_image(2, target, level, xoffset, yoffset, 0,
+                            width, height, 1, format, imageSize, data);
+}
+
+
+void GLAPIENTRY
+_mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset,
+                                 GLint yoffset, GLint zoffset, GLsizei width,
+                                 GLsizei height, GLsizei depth, GLenum format,
+                                 GLsizei imageSize, const GLvoid *data)
+{
+   compressed_tex_sub_image(3, target, level, xoffset, yoffset, zoffset,
+                            width, height, depth, format, imageSize, data);
+}
diff --git a/mesalib/src/mesa/main/texstate.c b/mesalib/src/mesa/main/texstate.c
index d86a5a5ec..41d531f59 100644
--- a/mesalib/src/mesa/main/texstate.c
+++ b/mesalib/src/mesa/main/texstate.c
@@ -1,844 +1,841 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.5

- *

- * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/** 

- * \file texstate.c

- *

- * Texture state handling.

- */

-

-#include "glheader.h"

-#include "mfeatures.h"

-#include "colormac.h"

-#include "colortab.h"

-#include "context.h"

-#include "enums.h"

-#include "macros.h"

-#include "texobj.h"

-#include "teximage.h"

-#include "texstate.h"

-#include "mtypes.h"

-

-

-

-/**

- * Default texture combine environment state.  This is used to initialize

- * a context's texture units and as the basis for converting "classic"

- * texture environmnets to ARB_texture_env_combine style values.

- */

-static const struct gl_tex_env_combine_state default_combine_state = {

-   GL_MODULATE, GL_MODULATE,

-   { GL_TEXTURE, GL_PREVIOUS, GL_CONSTANT, GL_CONSTANT },

-   { GL_TEXTURE, GL_PREVIOUS, GL_CONSTANT, GL_CONSTANT },

-   { GL_SRC_COLOR, GL_SRC_COLOR, GL_SRC_ALPHA, GL_SRC_ALPHA },

-   { GL_SRC_ALPHA, GL_SRC_ALPHA, GL_SRC_ALPHA, GL_SRC_ALPHA },

-   0, 0,

-   2, 2

-};

-

-

-

-/**

- * Used by glXCopyContext to copy texture state from one context to another.

- */

-void

-_mesa_copy_texture_state( const struct gl_context *src, struct gl_context *dst )

-{

-   GLuint u, tex;

-

-   ASSERT(src);

-   ASSERT(dst);

-

-   dst->Texture.CurrentUnit = src->Texture.CurrentUnit;

-   dst->Texture._GenFlags = src->Texture._GenFlags;

-   dst->Texture._TexGenEnabled = src->Texture._TexGenEnabled;

-   dst->Texture._TexMatEnabled = src->Texture._TexMatEnabled;

-   dst->Texture.SharedPalette = src->Texture.SharedPalette;

-

-   /* per-unit state */

-   for (u = 0; u < src->Const.MaxCombinedTextureImageUnits; u++) {

-      dst->Texture.Unit[u].Enabled = src->Texture.Unit[u].Enabled;

-      dst->Texture.Unit[u].EnvMode = src->Texture.Unit[u].EnvMode;

-      COPY_4V(dst->Texture.Unit[u].EnvColor, src->Texture.Unit[u].EnvColor);

-      dst->Texture.Unit[u].TexGenEnabled = src->Texture.Unit[u].TexGenEnabled;

-      dst->Texture.Unit[u].GenS = src->Texture.Unit[u].GenS;

-      dst->Texture.Unit[u].GenT = src->Texture.Unit[u].GenT;

-      dst->Texture.Unit[u].GenR = src->Texture.Unit[u].GenR;

-      dst->Texture.Unit[u].GenQ = src->Texture.Unit[u].GenQ;

-      dst->Texture.Unit[u].LodBias = src->Texture.Unit[u].LodBias;

-

-      /* GL_EXT_texture_env_combine */

-      dst->Texture.Unit[u].Combine = src->Texture.Unit[u].Combine;

-

-      /* GL_ATI_envmap_bumpmap - need this? */

-      dst->Texture.Unit[u].BumpTarget = src->Texture.Unit[u].BumpTarget;

-      COPY_4V(dst->Texture.Unit[u].RotMatrix, src->Texture.Unit[u].RotMatrix);

-

-      /*

-       * XXX strictly speaking, we should compare texture names/ids and

-       * bind textures in the dest context according to id.  For now, only

-       * copy bindings if the contexts share the same pool of textures to

-       * avoid refcounting bugs.

-       */

-      if (dst->Shared == src->Shared) {

-         /* copy texture object bindings, not contents of texture objects */

-         _mesa_lock_context_textures(dst);

-

-         for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {

-            _mesa_reference_texobj(&dst->Texture.Unit[u].CurrentTex[tex],

-                                   src->Texture.Unit[u].CurrentTex[tex]);

-         }

-         _mesa_unlock_context_textures(dst);

-      }

-   }

-}

-

-

-/*

- * For debugging

- */

-void

-_mesa_print_texunit_state( struct gl_context *ctx, GLuint unit )

-{

-   const struct gl_texture_unit *texUnit = ctx->Texture.Unit + unit;

-   printf("Texture Unit %d\n", unit);

-   printf("  GL_TEXTURE_ENV_MODE = %s\n", _mesa_lookup_enum_by_nr(texUnit->EnvMode));

-   printf("  GL_COMBINE_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.ModeRGB));

-   printf("  GL_COMBINE_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.ModeA));

-   printf("  GL_SOURCE0_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceRGB[0]));

-   printf("  GL_SOURCE1_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceRGB[1]));

-   printf("  GL_SOURCE2_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceRGB[2]));

-   printf("  GL_SOURCE0_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceA[0]));

-   printf("  GL_SOURCE1_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceA[1]));

-   printf("  GL_SOURCE2_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceA[2]));

-   printf("  GL_OPERAND0_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandRGB[0]));

-   printf("  GL_OPERAND1_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandRGB[1]));

-   printf("  GL_OPERAND2_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandRGB[2]));

-   printf("  GL_OPERAND0_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandA[0]));

-   printf("  GL_OPERAND1_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandA[1]));

-   printf("  GL_OPERAND2_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandA[2]));

-   printf("  GL_RGB_SCALE = %d\n", 1 << texUnit->Combine.ScaleShiftRGB);

-   printf("  GL_ALPHA_SCALE = %d\n", 1 << texUnit->Combine.ScaleShiftA);

-   printf("  GL_TEXTURE_ENV_COLOR = (%f, %f, %f, %f)\n", texUnit->EnvColor[0], texUnit->EnvColor[1], texUnit->EnvColor[2], texUnit->EnvColor[3]);

-}

-

-

-

-/**********************************************************************/

-/*                       Texture Environment                          */

-/**********************************************************************/

-

-/**

- * Convert "classic" texture environment to ARB_texture_env_combine style

- * environments.

- * 

- * \param state  texture_env_combine state vector to be filled-in.

- * \param mode   Classic texture environment mode (i.e., \c GL_REPLACE,

- *               \c GL_BLEND, \c GL_DECAL, etc.).

- * \param texBaseFormat  Base format of the texture associated with the

- *               texture unit.

- */

-static void

-calculate_derived_texenv( struct gl_tex_env_combine_state *state,

-			  GLenum mode, GLenum texBaseFormat )

-{

-   GLenum mode_rgb;

-   GLenum mode_a;

-

-   *state = default_combine_state;

-

-   switch (texBaseFormat) {

-   case GL_ALPHA:

-      state->SourceRGB[0] = GL_PREVIOUS;

-      break;

-

-   case GL_LUMINANCE_ALPHA:

-   case GL_INTENSITY:

-   case GL_RGBA:

-      break;

-

-   case GL_LUMINANCE:

-   case GL_RED:

-   case GL_RG:

-   case GL_RGB:

-   case GL_YCBCR_MESA:

-   case GL_DUDV_ATI:

-      state->SourceA[0] = GL_PREVIOUS;

-      break;

-      

-   default:

-      _mesa_problem(NULL,

-                    "Invalid texBaseFormat 0x%x in calculate_derived_texenv",

-                    texBaseFormat);

-      return;

-   }

-

-   if (mode == GL_REPLACE_EXT)

-      mode = GL_REPLACE;

-

-   switch (mode) {

-   case GL_REPLACE:

-   case GL_MODULATE:

-      mode_rgb = (texBaseFormat == GL_ALPHA) ? GL_REPLACE : mode;

-      mode_a   = mode;

-      break;

-   

-   case GL_DECAL:

-      mode_rgb = GL_INTERPOLATE;

-      mode_a   = GL_REPLACE;

-

-      state->SourceA[0] = GL_PREVIOUS;

-

-      /* Having alpha / luminance / intensity textures replace using the

-       * incoming fragment color matches the definition in NV_texture_shader.

-       * The 1.5 spec simply marks these as "undefined".

-       */

-      switch (texBaseFormat) {

-      case GL_ALPHA:

-      case GL_LUMINANCE:

-      case GL_LUMINANCE_ALPHA:

-      case GL_INTENSITY:

-	 state->SourceRGB[0] = GL_PREVIOUS;

-	 break;

-      case GL_RED:

-      case GL_RG:

-      case GL_RGB:

-      case GL_YCBCR_MESA:

-      case GL_DUDV_ATI:

-	 mode_rgb = GL_REPLACE;

-	 break;

-      case GL_RGBA:

-	 state->SourceRGB[2] = GL_TEXTURE;

-	 break;

-      }

-      break;

-

-   case GL_BLEND:

-      mode_rgb = GL_INTERPOLATE;

-      mode_a   = GL_MODULATE;

-

-      switch (texBaseFormat) {

-      case GL_ALPHA:

-	 mode_rgb = GL_REPLACE;

-	 break;

-      case GL_INTENSITY:

-	 mode_a = GL_INTERPOLATE;

-	 state->SourceA[0] = GL_CONSTANT;

-	 state->OperandA[2] = GL_SRC_ALPHA;

-	 /* FALLTHROUGH */

-      case GL_LUMINANCE:

-      case GL_RED:

-      case GL_RG:

-      case GL_RGB:

-      case GL_LUMINANCE_ALPHA:

-      case GL_RGBA:

-      case GL_YCBCR_MESA:

-      case GL_DUDV_ATI:

-	 state->SourceRGB[2] = GL_TEXTURE;

-	 state->SourceA[2]   = GL_TEXTURE;

-	 state->SourceRGB[0] = GL_CONSTANT;

-	 state->OperandRGB[2] = GL_SRC_COLOR;

-	 break;

-      }

-      break;

-

-   case GL_ADD:

-      mode_rgb = (texBaseFormat == GL_ALPHA) ? GL_REPLACE : GL_ADD;

-      mode_a   = (texBaseFormat == GL_INTENSITY) ? GL_ADD : GL_MODULATE;

-      break;

-

-   default:

-      _mesa_problem(NULL,

-                    "Invalid texture env mode 0x%x in calculate_derived_texenv",

-                    mode);

-      return;

-   }

-   

-   state->ModeRGB = (state->SourceRGB[0] != GL_PREVIOUS)

-       ? mode_rgb : GL_REPLACE;

-   state->ModeA   = (state->SourceA[0]   != GL_PREVIOUS)

-       ? mode_a   : GL_REPLACE;

-}

-

-

-

-

-/* GL_ARB_multitexture */

-void GLAPIENTRY

-_mesa_ActiveTextureARB(GLenum texture)

-{

-   const GLuint texUnit = texture - GL_TEXTURE0;

-   GLuint k;

-   GET_CURRENT_CONTEXT(ctx);

-

-   /* See OpenGL spec for glActiveTexture: */

-   k = MAX2(ctx->Const.MaxCombinedTextureImageUnits,

-            ctx->Const.MaxTextureCoordUnits);

-

-   ASSERT(k <= Elements(ctx->Texture.Unit));

-   

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))

-      _mesa_debug(ctx, "glActiveTexture %s\n",

-                  _mesa_lookup_enum_by_nr(texture));

-

-   if (texUnit >= k) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glActiveTexture(texture=%s)",

-                  _mesa_lookup_enum_by_nr(texture));

-      return;

-   }

-

-   if (ctx->Texture.CurrentUnit == texUnit)

-      return;

-

-   FLUSH_VERTICES(ctx, _NEW_TEXTURE);

-

-   ctx->Texture.CurrentUnit = texUnit;

-   if (ctx->Transform.MatrixMode == GL_TEXTURE) {

-      /* update current stack pointer */

-      ctx->CurrentStack = &ctx->TextureMatrixStack[texUnit];

-   }

-}

-

-

-/* GL_ARB_multitexture */

-void GLAPIENTRY

-_mesa_ClientActiveTextureARB(GLenum texture)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLuint texUnit = texture - GL_TEXTURE0;

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE))

-      _mesa_debug(ctx, "glClientActiveTexture %s\n",

-                  _mesa_lookup_enum_by_nr(texture));

-

-   if (texUnit >= ctx->Const.MaxTextureCoordUnits) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glClientActiveTexture(texture)");

-      return;

-   }

-

-   if (ctx->Array.ActiveTexture == texUnit)

-      return;

-

-   FLUSH_VERTICES(ctx, _NEW_ARRAY);

-   ctx->Array.ActiveTexture = texUnit;

-}

-

-

-

-/**********************************************************************/

-/*****                    State management                        *****/

-/**********************************************************************/

-

-

-/**

- * \note This routine refers to derived texture attribute values to

- * compute the ENABLE_TEXMAT flags, but is only called on

- * _NEW_TEXTURE_MATRIX.  On changes to _NEW_TEXTURE, the ENABLE_TEXMAT

- * flags are updated by _mesa_update_textures(), below.

- *

- * \param ctx GL context.

- */

-static void

-update_texture_matrices( struct gl_context *ctx )

-{

-   GLuint u;

-

-   ctx->Texture._TexMatEnabled = 0x0;

-

-   for (u = 0; u < ctx->Const.MaxTextureCoordUnits; u++) {

-      ASSERT(u < Elements(ctx->TextureMatrixStack));

-      if (_math_matrix_is_dirty(ctx->TextureMatrixStack[u].Top)) {

-	 _math_matrix_analyse( ctx->TextureMatrixStack[u].Top );

-

-	 if (ctx->Texture.Unit[u]._ReallyEnabled &&

-	     ctx->TextureMatrixStack[u].Top->type != MATRIX_IDENTITY)

-	    ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(u);

-      }

-   }

-}

-

-

-/**

- * Examine texture unit's combine/env state to update derived state.

- */

-static void

-update_tex_combine(struct gl_context *ctx, struct gl_texture_unit *texUnit)

-{

-   struct gl_tex_env_combine_state *combine;

-

-   /* Set the texUnit->_CurrentCombine field to point to the user's combiner

-    * state, or the combiner state which is derived from traditional texenv

-    * mode.

-    */

-   if (texUnit->EnvMode == GL_COMBINE ||

-       texUnit->EnvMode == GL_COMBINE4_NV) {

-      texUnit->_CurrentCombine = & texUnit->Combine;

-   }

-   else {

-      const struct gl_texture_object *texObj = texUnit->_Current;

-      GLenum format = texObj->Image[0][texObj->BaseLevel]->_BaseFormat;

-      if (format == GL_COLOR_INDEX) {

-         format = GL_RGBA;  /* a bit of a hack */

-      }

-      else if (format == GL_DEPTH_COMPONENT ||

-               format == GL_DEPTH_STENCIL_EXT) {

-         format = texObj->DepthMode;

-      }

-      calculate_derived_texenv(&texUnit->_EnvMode, texUnit->EnvMode, format);

-      texUnit->_CurrentCombine = & texUnit->_EnvMode;

-   }

-

-   combine = texUnit->_CurrentCombine;

-

-   /* Determine number of source RGB terms in the combiner function */

-   switch (combine->ModeRGB) {

-   case GL_REPLACE:

-      combine->_NumArgsRGB = 1;

-      break;

-   case GL_ADD:

-   case GL_ADD_SIGNED:

-      if (texUnit->EnvMode == GL_COMBINE4_NV)

-         combine->_NumArgsRGB = 4;

-      else

-         combine->_NumArgsRGB = 2;

-      break;

-   case GL_MODULATE:

-   case GL_SUBTRACT:

-   case GL_DOT3_RGB:

-   case GL_DOT3_RGBA:

-   case GL_DOT3_RGB_EXT:

-   case GL_DOT3_RGBA_EXT:

-      combine->_NumArgsRGB = 2;

-      break;

-   case GL_INTERPOLATE:

-   case GL_MODULATE_ADD_ATI:

-   case GL_MODULATE_SIGNED_ADD_ATI:

-   case GL_MODULATE_SUBTRACT_ATI:

-      combine->_NumArgsRGB = 3;

-      break;

-   case GL_BUMP_ENVMAP_ATI:

-      /* no real arguments for this case */

-      combine->_NumArgsRGB = 0;

-      break;

-   default:

-      combine->_NumArgsRGB = 0;

-      _mesa_problem(ctx, "invalid RGB combine mode in update_texture_state");

-      return;

-   }

-

-   /* Determine number of source Alpha terms in the combiner function */

-   switch (combine->ModeA) {

-   case GL_REPLACE:

-      combine->_NumArgsA = 1;

-      break;

-   case GL_ADD:

-   case GL_ADD_SIGNED:

-      if (texUnit->EnvMode == GL_COMBINE4_NV)

-         combine->_NumArgsA = 4;

-      else

-         combine->_NumArgsA = 2;

-      break;

-   case GL_MODULATE:

-   case GL_SUBTRACT:

-      combine->_NumArgsA = 2;

-      break;

-   case GL_INTERPOLATE:

-   case GL_MODULATE_ADD_ATI:

-   case GL_MODULATE_SIGNED_ADD_ATI:

-   case GL_MODULATE_SUBTRACT_ATI:

-      combine->_NumArgsA = 3;

-      break;

-   default:

-      combine->_NumArgsA = 0;

-      _mesa_problem(ctx, "invalid Alpha combine mode in update_texture_state");

-      break;

-   }

-}

-

-

-/**

- * \note This routine refers to derived texture matrix values to

- * compute the ENABLE_TEXMAT flags, but is only called on

- * _NEW_TEXTURE.  On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT

- * flags are updated by _mesa_update_texture_matrices, above.

- *

- * \param ctx GL context.

- */

-static void

-update_texture_state( struct gl_context *ctx )

-{

-   GLuint unit;

-   struct gl_fragment_program *fprog = NULL;

-   struct gl_vertex_program *vprog = NULL;

-   GLbitfield enabledFragUnits = 0x0;

-

-   if (ctx->Shader.CurrentVertexProgram &&

-       ctx->Shader.CurrentVertexProgram->LinkStatus) {

-      vprog = ctx->Shader.CurrentVertexProgram->VertexProgram;

-   } else if (ctx->VertexProgram._Enabled) {

-      /* XXX enable this if/when non-shader vertex programs get

-       * texture fetches:

-       vprog = ctx->VertexProgram.Current;

-       */

-   }

-

-   if (ctx->Shader.CurrentFragmentProgram &&

-       ctx->Shader.CurrentFragmentProgram->LinkStatus) {

-      fprog = ctx->Shader.CurrentFragmentProgram->FragmentProgram;

-   }

-   else if (ctx->FragmentProgram._Enabled) {

-      fprog = ctx->FragmentProgram.Current;

-   }

-

-   /* FINISHME: Geometry shader texture accesses should also be considered

-    * FINISHME: here.

-    */

-

-   /* TODO: only set this if there are actual changes */

-   ctx->NewState |= _NEW_TEXTURE;

-

-   ctx->Texture._EnabledUnits = 0x0;

-   ctx->Texture._GenFlags = 0x0;

-   ctx->Texture._TexMatEnabled = 0x0;

-   ctx->Texture._TexGenEnabled = 0x0;

-

-   /*

-    * Update texture unit state.

-    */

-   for (unit = 0; unit < ctx->Const.MaxCombinedTextureImageUnits; unit++) {

-      struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];

-      GLbitfield enabledVertTargets = 0x0;

-      GLbitfield enabledFragTargets = 0x0;

-      GLbitfield enabledTargets = 0x0;

-      GLuint texIndex;

-

-      /* Get the bitmask of texture target enables.

-       * enableBits will be a mask of the TEXTURE_*_BIT flags indicating

-       * which texture targets are enabled (fixed function) or referenced

-       * by a fragment program/program.  When multiple flags are set, we'll

-       * settle on the one with highest priority (see below).

-       */

-      if (vprog) {

-         enabledVertTargets |= vprog->Base.TexturesUsed[unit];

-      }

-

-      if (fprog) {

-         enabledFragTargets |= fprog->Base.TexturesUsed[unit];

-      }

-      else {

-         /* fixed-function fragment program */

-         enabledFragTargets |= texUnit->Enabled;

-      }

-

-      enabledTargets = enabledVertTargets | enabledFragTargets;

-

-      texUnit->_ReallyEnabled = 0x0;

-

-      if (enabledTargets == 0x0) {

-         /* neither vertex nor fragment processing uses this unit */

-         continue;

-      }

-

-      /* Look for the highest priority texture target that's enabled (or used

-       * by the vert/frag shaders) and "complete".  That's the one we'll use

-       * for texturing.  If we're using vert/frag program we're guaranteed

-       * that bitcount(enabledBits) <= 1.

-       * Note that the TEXTURE_x_INDEX values are in high to low priority.

-       */

-      for (texIndex = 0; texIndex < NUM_TEXTURE_TARGETS; texIndex++) {

-         if (enabledTargets & (1 << texIndex)) {

-            struct gl_texture_object *texObj = texUnit->CurrentTex[texIndex];

-            if (!texObj->_Complete) {

-               _mesa_test_texobj_completeness(ctx, texObj);

-            }

-            if (texObj->_Complete) {

-               texUnit->_ReallyEnabled = 1 << texIndex;

-               _mesa_reference_texobj(&texUnit->_Current, texObj);

-               break;

-            }

-         }

-      }

-

-      if (!texUnit->_ReallyEnabled) {

-         if (fprog) {

-            /* If we get here it means the shader is expecting a texture

-             * object, but there isn't one (or it's incomplete).  Use the

-             * fallback texture.

-             */

-            struct gl_texture_object *texObj = _mesa_get_fallback_texture(ctx);

-            texUnit->_ReallyEnabled = 1 << TEXTURE_2D_INDEX;

-            _mesa_reference_texobj(&texUnit->_Current, texObj);

-         }

-         else {

-            /* fixed-function: texture unit is really disabled */

-            continue;

-         }

-      }

-

-      /* if we get here, we know this texture unit is enabled */

-

-      ctx->Texture._EnabledUnits |= (1 << unit);

-

-      if (enabledFragTargets)

-         enabledFragUnits |= (1 << unit);

-

-      update_tex_combine(ctx, texUnit);

-   }

-

-

-   /* Determine which texture coordinate sets are actually needed */

-   if (fprog) {

-      const GLuint coordMask = (1 << MAX_TEXTURE_COORD_UNITS) - 1;

-      ctx->Texture._EnabledCoordUnits

-         = (fprog->Base.InputsRead >> FRAG_ATTRIB_TEX0) & coordMask;

-   }

-   else {

-      ctx->Texture._EnabledCoordUnits = enabledFragUnits;

-   }

-

-   /* Setup texgen for those texture coordinate sets that are in use */

-   for (unit = 0; unit < ctx->Const.MaxTextureCoordUnits; unit++) {

-      struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];

-

-      texUnit->_GenFlags = 0x0;

-

-      if (!(ctx->Texture._EnabledCoordUnits & (1 << unit)))

-	 continue;

-

-      if (texUnit->TexGenEnabled) {

-	 if (texUnit->TexGenEnabled & S_BIT) {

-	    texUnit->_GenFlags |= texUnit->GenS._ModeBit;

-	 }

-	 if (texUnit->TexGenEnabled & T_BIT) {

-	    texUnit->_GenFlags |= texUnit->GenT._ModeBit;

-	 }

-	 if (texUnit->TexGenEnabled & R_BIT) {

-	    texUnit->_GenFlags |= texUnit->GenR._ModeBit;

-	 }

-	 if (texUnit->TexGenEnabled & Q_BIT) {

-	    texUnit->_GenFlags |= texUnit->GenQ._ModeBit;

-	 }

-

-	 ctx->Texture._TexGenEnabled |= ENABLE_TEXGEN(unit);

-	 ctx->Texture._GenFlags |= texUnit->_GenFlags;

-      }

-

-      ASSERT(unit < Elements(ctx->TextureMatrixStack));

-      if (ctx->TextureMatrixStack[unit].Top->type != MATRIX_IDENTITY)

-	 ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(unit);

-   }

-}

-

-

-/**

- * Update texture-related derived state.

- */

-void

-_mesa_update_texture( struct gl_context *ctx, GLuint new_state )

-{

-   if (new_state & _NEW_TEXTURE_MATRIX)

-      update_texture_matrices( ctx );

-

-   if (new_state & (_NEW_TEXTURE | _NEW_PROGRAM))

-      update_texture_state( ctx );

-}

-

-

-/**********************************************************************/

-/*****                      Initialization                        *****/

-/**********************************************************************/

-

-/**

- * Allocate the proxy textures for the given context.

- * 

- * \param ctx the context to allocate proxies for.

- * 

- * \return GL_TRUE on success, or GL_FALSE on failure

- * 

- * If run out of memory part way through the allocations, clean up and return

- * GL_FALSE.

- */

-static GLboolean

-alloc_proxy_textures( struct gl_context *ctx )

-{

-   static const GLenum targets[] = {

-      GL_TEXTURE_1D,

-      GL_TEXTURE_2D,

-      GL_TEXTURE_3D,

-      GL_TEXTURE_CUBE_MAP_ARB,

-      GL_TEXTURE_RECTANGLE_NV,

-      GL_TEXTURE_1D_ARRAY_EXT,

-      GL_TEXTURE_2D_ARRAY_EXT

-   };

-   GLint tgt;

-

-   ASSERT(Elements(targets) == NUM_TEXTURE_TARGETS);

-

-   for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {

-      if (!(ctx->Texture.ProxyTex[tgt]

-            = ctx->Driver.NewTextureObject(ctx, 0, targets[tgt]))) {

-         /* out of memory, free what we did allocate */

-         while (--tgt >= 0) {

-            ctx->Driver.DeleteTexture(ctx, ctx->Texture.ProxyTex[tgt]);

-         }

-         return GL_FALSE;

-      }

-   }

-

-   assert(ctx->Texture.ProxyTex[0]->RefCount == 1); /* sanity check */

-   return GL_TRUE;

-}

-

-

-/**

- * Initialize a texture unit.

- *

- * \param ctx GL context.

- * \param unit texture unit number to be initialized.

- */

-static void

-init_texture_unit( struct gl_context *ctx, GLuint unit )

-{

-   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];

-   GLuint tex;

-

-   texUnit->EnvMode = GL_MODULATE;

-   ASSIGN_4V( texUnit->EnvColor, 0.0, 0.0, 0.0, 0.0 );

-

-   texUnit->Combine = default_combine_state;

-   texUnit->_EnvMode = default_combine_state;

-   texUnit->_CurrentCombine = & texUnit->_EnvMode;

-   texUnit->BumpTarget = GL_TEXTURE0;

-

-   texUnit->TexGenEnabled = 0x0;

-   texUnit->GenS.Mode = GL_EYE_LINEAR;

-   texUnit->GenT.Mode = GL_EYE_LINEAR;

-   texUnit->GenR.Mode = GL_EYE_LINEAR;

-   texUnit->GenQ.Mode = GL_EYE_LINEAR;

-   texUnit->GenS._ModeBit = TEXGEN_EYE_LINEAR;

-   texUnit->GenT._ModeBit = TEXGEN_EYE_LINEAR;

-   texUnit->GenR._ModeBit = TEXGEN_EYE_LINEAR;

-   texUnit->GenQ._ModeBit = TEXGEN_EYE_LINEAR;

-

-   /* Yes, these plane coefficients are correct! */

-   ASSIGN_4V( texUnit->GenS.ObjectPlane, 1.0, 0.0, 0.0, 0.0 );

-   ASSIGN_4V( texUnit->GenT.ObjectPlane, 0.0, 1.0, 0.0, 0.0 );

-   ASSIGN_4V( texUnit->GenR.ObjectPlane, 0.0, 0.0, 0.0, 0.0 );

-   ASSIGN_4V( texUnit->GenQ.ObjectPlane, 0.0, 0.0, 0.0, 0.0 );

-   ASSIGN_4V( texUnit->GenS.EyePlane, 1.0, 0.0, 0.0, 0.0 );

-   ASSIGN_4V( texUnit->GenT.EyePlane, 0.0, 1.0, 0.0, 0.0 );

-   ASSIGN_4V( texUnit->GenR.EyePlane, 0.0, 0.0, 0.0, 0.0 );

-   ASSIGN_4V( texUnit->GenQ.EyePlane, 0.0, 0.0, 0.0, 0.0 );

-

-   /* no mention of this in spec, but maybe id matrix expected? */

-   ASSIGN_4V( texUnit->RotMatrix, 1.0, 0.0, 0.0, 1.0 );

-

-   /* initialize current texture object ptrs to the shared default objects */

-   for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {

-      _mesa_reference_texobj(&texUnit->CurrentTex[tex],

-                             ctx->Shared->DefaultTex[tex]);

-   }

-}

-

-

-/**

- * Initialize texture state for the given context.

- */

-GLboolean

-_mesa_init_texture(struct gl_context *ctx)

-{

-   GLuint u;

-

-   /* Texture group */

-   ctx->Texture.CurrentUnit = 0;      /* multitexture */

-   ctx->Texture._EnabledUnits = 0x0;

-   ctx->Texture.SharedPalette = GL_FALSE;

-   _mesa_init_colortable(&ctx->Texture.Palette);

-

-   for (u = 0; u < Elements(ctx->Texture.Unit); u++)

-      init_texture_unit(ctx, u);

-

-   /* After we're done initializing the context's texture state the default

-    * texture objects' refcounts should be at least

-    * MAX_COMBINED_TEXTURE_IMAGE_UNITS + 1.

-    */

-   assert(ctx->Shared->DefaultTex[TEXTURE_1D_INDEX]->RefCount

-          >= MAX_COMBINED_TEXTURE_IMAGE_UNITS + 1);

-

-   /* Allocate proxy textures */

-   if (!alloc_proxy_textures( ctx ))

-      return GL_FALSE;

-

-   return GL_TRUE;

-}

-

-

-/**

- * Free dynamically-allocted texture data attached to the given context.

- */

-void

-_mesa_free_texture_data(struct gl_context *ctx)

-{

-   GLuint u, tgt;

-

-   /* unreference current textures */

-   for (u = 0; u < Elements(ctx->Texture.Unit); u++) {

-      /* The _Current texture could account for another reference */

-      _mesa_reference_texobj(&ctx->Texture.Unit[u]._Current, NULL);

-

-      for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {

-         _mesa_reference_texobj(&ctx->Texture.Unit[u].CurrentTex[tgt], NULL);

-      }

-   }

-

-   /* Free proxy texture objects */

-   for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++)

-      ctx->Driver.DeleteTexture(ctx, ctx->Texture.ProxyTex[tgt]);

-

-   for (u = 0; u < Elements(ctx->Texture.Unit); u++)

-      _mesa_free_colortable_data(&ctx->Texture.Unit[u].ColorTable);

-}

-

-

-/**

- * Update the default texture objects in the given context to reference those

- * specified in the shared state and release those referencing the old 

- * shared state.

- */

-void

-_mesa_update_default_objects_texture(struct gl_context *ctx)

-{

-   GLuint u, tex;

-

-   for (u = 0; u < Elements(ctx->Texture.Unit); u++) {

-      struct gl_texture_unit *texUnit = &ctx->Texture.Unit[u];

-      for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {

-         _mesa_reference_texobj(&texUnit->CurrentTex[tex],

-                                ctx->Shared->DefaultTex[tex]);

-      }

-   }

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.5
+ *
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/** 
+ * \file texstate.c
+ *
+ * Texture state handling.
+ */
+
+#include "glheader.h"
+#include "mfeatures.h"
+#include "colormac.h"
+#include "colortab.h"
+#include "context.h"
+#include "enums.h"
+#include "macros.h"
+#include "texobj.h"
+#include "teximage.h"
+#include "texstate.h"
+#include "mtypes.h"
+
+
+
+/**
+ * Default texture combine environment state.  This is used to initialize
+ * a context's texture units and as the basis for converting "classic"
+ * texture environmnets to ARB_texture_env_combine style values.
+ */
+static const struct gl_tex_env_combine_state default_combine_state = {
+   GL_MODULATE, GL_MODULATE,
+   { GL_TEXTURE, GL_PREVIOUS, GL_CONSTANT, GL_CONSTANT },
+   { GL_TEXTURE, GL_PREVIOUS, GL_CONSTANT, GL_CONSTANT },
+   { GL_SRC_COLOR, GL_SRC_COLOR, GL_SRC_ALPHA, GL_SRC_ALPHA },
+   { GL_SRC_ALPHA, GL_SRC_ALPHA, GL_SRC_ALPHA, GL_SRC_ALPHA },
+   0, 0,
+   2, 2
+};
+
+
+
+/**
+ * Used by glXCopyContext to copy texture state from one context to another.
+ */
+void
+_mesa_copy_texture_state( const struct gl_context *src, struct gl_context *dst )
+{
+   GLuint u, tex;
+
+   ASSERT(src);
+   ASSERT(dst);
+
+   dst->Texture.CurrentUnit = src->Texture.CurrentUnit;
+   dst->Texture._GenFlags = src->Texture._GenFlags;
+   dst->Texture._TexGenEnabled = src->Texture._TexGenEnabled;
+   dst->Texture._TexMatEnabled = src->Texture._TexMatEnabled;
+   dst->Texture.SharedPalette = src->Texture.SharedPalette;
+
+   /* per-unit state */
+   for (u = 0; u < src->Const.MaxCombinedTextureImageUnits; u++) {
+      dst->Texture.Unit[u].Enabled = src->Texture.Unit[u].Enabled;
+      dst->Texture.Unit[u].EnvMode = src->Texture.Unit[u].EnvMode;
+      COPY_4V(dst->Texture.Unit[u].EnvColor, src->Texture.Unit[u].EnvColor);
+      dst->Texture.Unit[u].TexGenEnabled = src->Texture.Unit[u].TexGenEnabled;
+      dst->Texture.Unit[u].GenS = src->Texture.Unit[u].GenS;
+      dst->Texture.Unit[u].GenT = src->Texture.Unit[u].GenT;
+      dst->Texture.Unit[u].GenR = src->Texture.Unit[u].GenR;
+      dst->Texture.Unit[u].GenQ = src->Texture.Unit[u].GenQ;
+      dst->Texture.Unit[u].LodBias = src->Texture.Unit[u].LodBias;
+
+      /* GL_EXT_texture_env_combine */
+      dst->Texture.Unit[u].Combine = src->Texture.Unit[u].Combine;
+
+      /* GL_ATI_envmap_bumpmap - need this? */
+      dst->Texture.Unit[u].BumpTarget = src->Texture.Unit[u].BumpTarget;
+      COPY_4V(dst->Texture.Unit[u].RotMatrix, src->Texture.Unit[u].RotMatrix);
+
+      /*
+       * XXX strictly speaking, we should compare texture names/ids and
+       * bind textures in the dest context according to id.  For now, only
+       * copy bindings if the contexts share the same pool of textures to
+       * avoid refcounting bugs.
+       */
+      if (dst->Shared == src->Shared) {
+         /* copy texture object bindings, not contents of texture objects */
+         _mesa_lock_context_textures(dst);
+
+         for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
+            _mesa_reference_texobj(&dst->Texture.Unit[u].CurrentTex[tex],
+                                   src->Texture.Unit[u].CurrentTex[tex]);
+         }
+         _mesa_unlock_context_textures(dst);
+      }
+   }
+}
+
+
+/*
+ * For debugging
+ */
+void
+_mesa_print_texunit_state( struct gl_context *ctx, GLuint unit )
+{
+   const struct gl_texture_unit *texUnit = ctx->Texture.Unit + unit;
+   printf("Texture Unit %d\n", unit);
+   printf("  GL_TEXTURE_ENV_MODE = %s\n", _mesa_lookup_enum_by_nr(texUnit->EnvMode));
+   printf("  GL_COMBINE_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.ModeRGB));
+   printf("  GL_COMBINE_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.ModeA));
+   printf("  GL_SOURCE0_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceRGB[0]));
+   printf("  GL_SOURCE1_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceRGB[1]));
+   printf("  GL_SOURCE2_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceRGB[2]));
+   printf("  GL_SOURCE0_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceA[0]));
+   printf("  GL_SOURCE1_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceA[1]));
+   printf("  GL_SOURCE2_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceA[2]));
+   printf("  GL_OPERAND0_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandRGB[0]));
+   printf("  GL_OPERAND1_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandRGB[1]));
+   printf("  GL_OPERAND2_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandRGB[2]));
+   printf("  GL_OPERAND0_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandA[0]));
+   printf("  GL_OPERAND1_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandA[1]));
+   printf("  GL_OPERAND2_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandA[2]));
+   printf("  GL_RGB_SCALE = %d\n", 1 << texUnit->Combine.ScaleShiftRGB);
+   printf("  GL_ALPHA_SCALE = %d\n", 1 << texUnit->Combine.ScaleShiftA);
+   printf("  GL_TEXTURE_ENV_COLOR = (%f, %f, %f, %f)\n", texUnit->EnvColor[0], texUnit->EnvColor[1], texUnit->EnvColor[2], texUnit->EnvColor[3]);
+}
+
+
+
+/**********************************************************************/
+/*                       Texture Environment                          */
+/**********************************************************************/
+
+/**
+ * Convert "classic" texture environment to ARB_texture_env_combine style
+ * environments.
+ * 
+ * \param state  texture_env_combine state vector to be filled-in.
+ * \param mode   Classic texture environment mode (i.e., \c GL_REPLACE,
+ *               \c GL_BLEND, \c GL_DECAL, etc.).
+ * \param texBaseFormat  Base format of the texture associated with the
+ *               texture unit.
+ */
+static void
+calculate_derived_texenv( struct gl_tex_env_combine_state *state,
+			  GLenum mode, GLenum texBaseFormat )
+{
+   GLenum mode_rgb;
+   GLenum mode_a;
+
+   *state = default_combine_state;
+
+   switch (texBaseFormat) {
+   case GL_ALPHA:
+      state->SourceRGB[0] = GL_PREVIOUS;
+      break;
+
+   case GL_LUMINANCE_ALPHA:
+   case GL_INTENSITY:
+   case GL_RGBA:
+      break;
+
+   case GL_LUMINANCE:
+   case GL_RED:
+   case GL_RG:
+   case GL_RGB:
+   case GL_YCBCR_MESA:
+   case GL_DUDV_ATI:
+      state->SourceA[0] = GL_PREVIOUS;
+      break;
+      
+   default:
+      _mesa_problem(NULL,
+                    "Invalid texBaseFormat 0x%x in calculate_derived_texenv",
+                    texBaseFormat);
+      return;
+   }
+
+   if (mode == GL_REPLACE_EXT)
+      mode = GL_REPLACE;
+
+   switch (mode) {
+   case GL_REPLACE:
+   case GL_MODULATE:
+      mode_rgb = (texBaseFormat == GL_ALPHA) ? GL_REPLACE : mode;
+      mode_a   = mode;
+      break;
+   
+   case GL_DECAL:
+      mode_rgb = GL_INTERPOLATE;
+      mode_a   = GL_REPLACE;
+
+      state->SourceA[0] = GL_PREVIOUS;
+
+      /* Having alpha / luminance / intensity textures replace using the
+       * incoming fragment color matches the definition in NV_texture_shader.
+       * The 1.5 spec simply marks these as "undefined".
+       */
+      switch (texBaseFormat) {
+      case GL_ALPHA:
+      case GL_LUMINANCE:
+      case GL_LUMINANCE_ALPHA:
+      case GL_INTENSITY:
+	 state->SourceRGB[0] = GL_PREVIOUS;
+	 break;
+      case GL_RED:
+      case GL_RG:
+      case GL_RGB:
+      case GL_YCBCR_MESA:
+      case GL_DUDV_ATI:
+	 mode_rgb = GL_REPLACE;
+	 break;
+      case GL_RGBA:
+	 state->SourceRGB[2] = GL_TEXTURE;
+	 break;
+      }
+      break;
+
+   case GL_BLEND:
+      mode_rgb = GL_INTERPOLATE;
+      mode_a   = GL_MODULATE;
+
+      switch (texBaseFormat) {
+      case GL_ALPHA:
+	 mode_rgb = GL_REPLACE;
+	 break;
+      case GL_INTENSITY:
+	 mode_a = GL_INTERPOLATE;
+	 state->SourceA[0] = GL_CONSTANT;
+	 state->OperandA[2] = GL_SRC_ALPHA;
+	 /* FALLTHROUGH */
+      case GL_LUMINANCE:
+      case GL_RED:
+      case GL_RG:
+      case GL_RGB:
+      case GL_LUMINANCE_ALPHA:
+      case GL_RGBA:
+      case GL_YCBCR_MESA:
+      case GL_DUDV_ATI:
+	 state->SourceRGB[2] = GL_TEXTURE;
+	 state->SourceA[2]   = GL_TEXTURE;
+	 state->SourceRGB[0] = GL_CONSTANT;
+	 state->OperandRGB[2] = GL_SRC_COLOR;
+	 break;
+      }
+      break;
+
+   case GL_ADD:
+      mode_rgb = (texBaseFormat == GL_ALPHA) ? GL_REPLACE : GL_ADD;
+      mode_a   = (texBaseFormat == GL_INTENSITY) ? GL_ADD : GL_MODULATE;
+      break;
+
+   default:
+      _mesa_problem(NULL,
+                    "Invalid texture env mode 0x%x in calculate_derived_texenv",
+                    mode);
+      return;
+   }
+   
+   state->ModeRGB = (state->SourceRGB[0] != GL_PREVIOUS)
+       ? mode_rgb : GL_REPLACE;
+   state->ModeA   = (state->SourceA[0]   != GL_PREVIOUS)
+       ? mode_a   : GL_REPLACE;
+}
+
+
+
+
+/* GL_ARB_multitexture */
+void GLAPIENTRY
+_mesa_ActiveTextureARB(GLenum texture)
+{
+   const GLuint texUnit = texture - GL_TEXTURE0;
+   GLuint k;
+   GET_CURRENT_CONTEXT(ctx);
+
+   /* See OpenGL spec for glActiveTexture: */
+   k = MAX2(ctx->Const.MaxCombinedTextureImageUnits,
+            ctx->Const.MaxTextureCoordUnits);
+
+   ASSERT(k <= Elements(ctx->Texture.Unit));
+   
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
+      _mesa_debug(ctx, "glActiveTexture %s\n",
+                  _mesa_lookup_enum_by_nr(texture));
+
+   if (texUnit >= k) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glActiveTexture(texture=%s)",
+                  _mesa_lookup_enum_by_nr(texture));
+      return;
+   }
+
+   if (ctx->Texture.CurrentUnit == texUnit)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+
+   ctx->Texture.CurrentUnit = texUnit;
+   if (ctx->Transform.MatrixMode == GL_TEXTURE) {
+      /* update current stack pointer */
+      ctx->CurrentStack = &ctx->TextureMatrixStack[texUnit];
+   }
+}
+
+
+/* GL_ARB_multitexture */
+void GLAPIENTRY
+_mesa_ClientActiveTextureARB(GLenum texture)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLuint texUnit = texture - GL_TEXTURE0;
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE))
+      _mesa_debug(ctx, "glClientActiveTexture %s\n",
+                  _mesa_lookup_enum_by_nr(texture));
+
+   if (texUnit >= ctx->Const.MaxTextureCoordUnits) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glClientActiveTexture(texture)");
+      return;
+   }
+
+   if (ctx->Array.ActiveTexture == texUnit)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_ARRAY);
+   ctx->Array.ActiveTexture = texUnit;
+}
+
+
+
+/**********************************************************************/
+/*****                    State management                        *****/
+/**********************************************************************/
+
+
+/**
+ * \note This routine refers to derived texture attribute values to
+ * compute the ENABLE_TEXMAT flags, but is only called on
+ * _NEW_TEXTURE_MATRIX.  On changes to _NEW_TEXTURE, the ENABLE_TEXMAT
+ * flags are updated by _mesa_update_textures(), below.
+ *
+ * \param ctx GL context.
+ */
+static void
+update_texture_matrices( struct gl_context *ctx )
+{
+   GLuint u;
+
+   ctx->Texture._TexMatEnabled = 0x0;
+
+   for (u = 0; u < ctx->Const.MaxTextureCoordUnits; u++) {
+      ASSERT(u < Elements(ctx->TextureMatrixStack));
+      if (_math_matrix_is_dirty(ctx->TextureMatrixStack[u].Top)) {
+	 _math_matrix_analyse( ctx->TextureMatrixStack[u].Top );
+
+	 if (ctx->Texture.Unit[u]._ReallyEnabled &&
+	     ctx->TextureMatrixStack[u].Top->type != MATRIX_IDENTITY)
+	    ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(u);
+      }
+   }
+}
+
+
+/**
+ * Examine texture unit's combine/env state to update derived state.
+ */
+static void
+update_tex_combine(struct gl_context *ctx, struct gl_texture_unit *texUnit)
+{
+   struct gl_tex_env_combine_state *combine;
+
+   /* Set the texUnit->_CurrentCombine field to point to the user's combiner
+    * state, or the combiner state which is derived from traditional texenv
+    * mode.
+    */
+   if (texUnit->EnvMode == GL_COMBINE ||
+       texUnit->EnvMode == GL_COMBINE4_NV) {
+      texUnit->_CurrentCombine = & texUnit->Combine;
+   }
+   else {
+      const struct gl_texture_object *texObj = texUnit->_Current;
+      GLenum format = texObj->Image[0][texObj->BaseLevel]->_BaseFormat;
+      if (format == GL_COLOR_INDEX) {
+         format = GL_RGBA;  /* a bit of a hack */
+      }
+      else if (format == GL_DEPTH_COMPONENT ||
+               format == GL_DEPTH_STENCIL_EXT) {
+         format = texObj->DepthMode;
+      }
+      calculate_derived_texenv(&texUnit->_EnvMode, texUnit->EnvMode, format);
+      texUnit->_CurrentCombine = & texUnit->_EnvMode;
+   }
+
+   combine = texUnit->_CurrentCombine;
+
+   /* Determine number of source RGB terms in the combiner function */
+   switch (combine->ModeRGB) {
+   case GL_REPLACE:
+      combine->_NumArgsRGB = 1;
+      break;
+   case GL_ADD:
+   case GL_ADD_SIGNED:
+      if (texUnit->EnvMode == GL_COMBINE4_NV)
+         combine->_NumArgsRGB = 4;
+      else
+         combine->_NumArgsRGB = 2;
+      break;
+   case GL_MODULATE:
+   case GL_SUBTRACT:
+   case GL_DOT3_RGB:
+   case GL_DOT3_RGBA:
+   case GL_DOT3_RGB_EXT:
+   case GL_DOT3_RGBA_EXT:
+      combine->_NumArgsRGB = 2;
+      break;
+   case GL_INTERPOLATE:
+   case GL_MODULATE_ADD_ATI:
+   case GL_MODULATE_SIGNED_ADD_ATI:
+   case GL_MODULATE_SUBTRACT_ATI:
+      combine->_NumArgsRGB = 3;
+      break;
+   case GL_BUMP_ENVMAP_ATI:
+      /* no real arguments for this case */
+      combine->_NumArgsRGB = 0;
+      break;
+   default:
+      combine->_NumArgsRGB = 0;
+      _mesa_problem(ctx, "invalid RGB combine mode in update_texture_state");
+      return;
+   }
+
+   /* Determine number of source Alpha terms in the combiner function */
+   switch (combine->ModeA) {
+   case GL_REPLACE:
+      combine->_NumArgsA = 1;
+      break;
+   case GL_ADD:
+   case GL_ADD_SIGNED:
+      if (texUnit->EnvMode == GL_COMBINE4_NV)
+         combine->_NumArgsA = 4;
+      else
+         combine->_NumArgsA = 2;
+      break;
+   case GL_MODULATE:
+   case GL_SUBTRACT:
+      combine->_NumArgsA = 2;
+      break;
+   case GL_INTERPOLATE:
+   case GL_MODULATE_ADD_ATI:
+   case GL_MODULATE_SIGNED_ADD_ATI:
+   case GL_MODULATE_SUBTRACT_ATI:
+      combine->_NumArgsA = 3;
+      break;
+   default:
+      combine->_NumArgsA = 0;
+      _mesa_problem(ctx, "invalid Alpha combine mode in update_texture_state");
+      break;
+   }
+}
+
+
+/**
+ * \note This routine refers to derived texture matrix values to
+ * compute the ENABLE_TEXMAT flags, but is only called on
+ * _NEW_TEXTURE.  On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT
+ * flags are updated by _mesa_update_texture_matrices, above.
+ *
+ * \param ctx GL context.
+ */
+static void
+update_texture_state( struct gl_context *ctx )
+{
+   GLuint unit;
+   struct gl_fragment_program *fprog = NULL;
+   struct gl_vertex_program *vprog = NULL;
+   GLbitfield enabledFragUnits = 0x0;
+
+   if (ctx->Shader.CurrentVertexProgram &&
+       ctx->Shader.CurrentVertexProgram->LinkStatus) {
+      vprog = ctx->Shader.CurrentVertexProgram->VertexProgram;
+   } else if (ctx->VertexProgram._Enabled) {
+      /* XXX enable this if/when non-shader vertex programs get
+       * texture fetches:
+       vprog = ctx->VertexProgram.Current;
+       */
+   }
+
+   if (ctx->Shader.CurrentFragmentProgram &&
+       ctx->Shader.CurrentFragmentProgram->LinkStatus) {
+      fprog = ctx->Shader.CurrentFragmentProgram->FragmentProgram;
+   }
+   else if (ctx->FragmentProgram._Enabled) {
+      fprog = ctx->FragmentProgram.Current;
+   }
+
+   /* FINISHME: Geometry shader texture accesses should also be considered
+    * FINISHME: here.
+    */
+
+   /* TODO: only set this if there are actual changes */
+   ctx->NewState |= _NEW_TEXTURE;
+
+   ctx->Texture._EnabledUnits = 0x0;
+   ctx->Texture._GenFlags = 0x0;
+   ctx->Texture._TexMatEnabled = 0x0;
+   ctx->Texture._TexGenEnabled = 0x0;
+
+   /*
+    * Update texture unit state.
+    */
+   for (unit = 0; unit < ctx->Const.MaxCombinedTextureImageUnits; unit++) {
+      struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+      GLbitfield enabledVertTargets = 0x0;
+      GLbitfield enabledFragTargets = 0x0;
+      GLbitfield enabledTargets = 0x0;
+      GLuint texIndex;
+
+      /* Get the bitmask of texture target enables.
+       * enableBits will be a mask of the TEXTURE_*_BIT flags indicating
+       * which texture targets are enabled (fixed function) or referenced
+       * by a fragment program/program.  When multiple flags are set, we'll
+       * settle on the one with highest priority (see below).
+       */
+      if (vprog) {
+         enabledVertTargets |= vprog->Base.TexturesUsed[unit];
+      }
+
+      if (fprog) {
+         enabledFragTargets |= fprog->Base.TexturesUsed[unit];
+      }
+      else {
+         /* fixed-function fragment program */
+         enabledFragTargets |= texUnit->Enabled;
+      }
+
+      enabledTargets = enabledVertTargets | enabledFragTargets;
+
+      texUnit->_ReallyEnabled = 0x0;
+
+      if (enabledTargets == 0x0) {
+         /* neither vertex nor fragment processing uses this unit */
+         continue;
+      }
+
+      /* Look for the highest priority texture target that's enabled (or used
+       * by the vert/frag shaders) and "complete".  That's the one we'll use
+       * for texturing.  If we're using vert/frag program we're guaranteed
+       * that bitcount(enabledBits) <= 1.
+       * Note that the TEXTURE_x_INDEX values are in high to low priority.
+       */
+      for (texIndex = 0; texIndex < NUM_TEXTURE_TARGETS; texIndex++) {
+         if (enabledTargets & (1 << texIndex)) {
+            struct gl_texture_object *texObj = texUnit->CurrentTex[texIndex];
+            if (!texObj->_Complete) {
+               _mesa_test_texobj_completeness(ctx, texObj);
+            }
+            if (texObj->_Complete) {
+               texUnit->_ReallyEnabled = 1 << texIndex;
+               _mesa_reference_texobj(&texUnit->_Current, texObj);
+               break;
+            }
+         }
+      }
+
+      if (!texUnit->_ReallyEnabled) {
+         if (fprog) {
+            /* If we get here it means the shader is expecting a texture
+             * object, but there isn't one (or it's incomplete).  Use the
+             * fallback texture.
+             */
+            struct gl_texture_object *texObj = _mesa_get_fallback_texture(ctx);
+            texUnit->_ReallyEnabled = 1 << TEXTURE_2D_INDEX;
+            _mesa_reference_texobj(&texUnit->_Current, texObj);
+         }
+         else {
+            /* fixed-function: texture unit is really disabled */
+            continue;
+         }
+      }
+
+      /* if we get here, we know this texture unit is enabled */
+
+      ctx->Texture._EnabledUnits |= (1 << unit);
+
+      if (enabledFragTargets)
+         enabledFragUnits |= (1 << unit);
+
+      update_tex_combine(ctx, texUnit);
+   }
+
+
+   /* Determine which texture coordinate sets are actually needed */
+   if (fprog) {
+      const GLuint coordMask = (1 << MAX_TEXTURE_COORD_UNITS) - 1;
+      ctx->Texture._EnabledCoordUnits
+         = (fprog->Base.InputsRead >> FRAG_ATTRIB_TEX0) & coordMask;
+   }
+   else {
+      ctx->Texture._EnabledCoordUnits = enabledFragUnits;
+   }
+
+   /* Setup texgen for those texture coordinate sets that are in use */
+   for (unit = 0; unit < ctx->Const.MaxTextureCoordUnits; unit++) {
+      struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+
+      texUnit->_GenFlags = 0x0;
+
+      if (!(ctx->Texture._EnabledCoordUnits & (1 << unit)))
+	 continue;
+
+      if (texUnit->TexGenEnabled) {
+	 if (texUnit->TexGenEnabled & S_BIT) {
+	    texUnit->_GenFlags |= texUnit->GenS._ModeBit;
+	 }
+	 if (texUnit->TexGenEnabled & T_BIT) {
+	    texUnit->_GenFlags |= texUnit->GenT._ModeBit;
+	 }
+	 if (texUnit->TexGenEnabled & R_BIT) {
+	    texUnit->_GenFlags |= texUnit->GenR._ModeBit;
+	 }
+	 if (texUnit->TexGenEnabled & Q_BIT) {
+	    texUnit->_GenFlags |= texUnit->GenQ._ModeBit;
+	 }
+
+	 ctx->Texture._TexGenEnabled |= ENABLE_TEXGEN(unit);
+	 ctx->Texture._GenFlags |= texUnit->_GenFlags;
+      }
+
+      ASSERT(unit < Elements(ctx->TextureMatrixStack));
+      if (ctx->TextureMatrixStack[unit].Top->type != MATRIX_IDENTITY)
+	 ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(unit);
+   }
+}
+
+
+/**
+ * Update texture-related derived state.
+ */
+void
+_mesa_update_texture( struct gl_context *ctx, GLuint new_state )
+{
+   if (new_state & _NEW_TEXTURE_MATRIX)
+      update_texture_matrices( ctx );
+
+   if (new_state & (_NEW_TEXTURE | _NEW_PROGRAM))
+      update_texture_state( ctx );
+}
+
+
+/**********************************************************************/
+/*****                      Initialization                        *****/
+/**********************************************************************/
+
+/**
+ * Allocate the proxy textures for the given context.
+ * 
+ * \param ctx the context to allocate proxies for.
+ * 
+ * \return GL_TRUE on success, or GL_FALSE on failure
+ * 
+ * If run out of memory part way through the allocations, clean up and return
+ * GL_FALSE.
+ */
+static GLboolean
+alloc_proxy_textures( struct gl_context *ctx )
+{
+   static const GLenum targets[] = {
+      GL_TEXTURE_1D,
+      GL_TEXTURE_2D,
+      GL_TEXTURE_3D,
+      GL_TEXTURE_CUBE_MAP_ARB,
+      GL_TEXTURE_RECTANGLE_NV,
+      GL_TEXTURE_1D_ARRAY_EXT,
+      GL_TEXTURE_2D_ARRAY_EXT
+   };
+   GLint tgt;
+
+   ASSERT(Elements(targets) == NUM_TEXTURE_TARGETS);
+
+   for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
+      if (!(ctx->Texture.ProxyTex[tgt]
+            = ctx->Driver.NewTextureObject(ctx, 0, targets[tgt]))) {
+         /* out of memory, free what we did allocate */
+         while (--tgt >= 0) {
+            ctx->Driver.DeleteTexture(ctx, ctx->Texture.ProxyTex[tgt]);
+         }
+         return GL_FALSE;
+      }
+   }
+
+   assert(ctx->Texture.ProxyTex[0]->RefCount == 1); /* sanity check */
+   return GL_TRUE;
+}
+
+
+/**
+ * Initialize a texture unit.
+ *
+ * \param ctx GL context.
+ * \param unit texture unit number to be initialized.
+ */
+static void
+init_texture_unit( struct gl_context *ctx, GLuint unit )
+{
+   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+   GLuint tex;
+
+   texUnit->EnvMode = GL_MODULATE;
+   ASSIGN_4V( texUnit->EnvColor, 0.0, 0.0, 0.0, 0.0 );
+
+   texUnit->Combine = default_combine_state;
+   texUnit->_EnvMode = default_combine_state;
+   texUnit->_CurrentCombine = & texUnit->_EnvMode;
+   texUnit->BumpTarget = GL_TEXTURE0;
+
+   texUnit->TexGenEnabled = 0x0;
+   texUnit->GenS.Mode = GL_EYE_LINEAR;
+   texUnit->GenT.Mode = GL_EYE_LINEAR;
+   texUnit->GenR.Mode = GL_EYE_LINEAR;
+   texUnit->GenQ.Mode = GL_EYE_LINEAR;
+   texUnit->GenS._ModeBit = TEXGEN_EYE_LINEAR;
+   texUnit->GenT._ModeBit = TEXGEN_EYE_LINEAR;
+   texUnit->GenR._ModeBit = TEXGEN_EYE_LINEAR;
+   texUnit->GenQ._ModeBit = TEXGEN_EYE_LINEAR;
+
+   /* Yes, these plane coefficients are correct! */
+   ASSIGN_4V( texUnit->GenS.ObjectPlane, 1.0, 0.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->GenT.ObjectPlane, 0.0, 1.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->GenR.ObjectPlane, 0.0, 0.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->GenQ.ObjectPlane, 0.0, 0.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->GenS.EyePlane, 1.0, 0.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->GenT.EyePlane, 0.0, 1.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->GenR.EyePlane, 0.0, 0.0, 0.0, 0.0 );
+   ASSIGN_4V( texUnit->GenQ.EyePlane, 0.0, 0.0, 0.0, 0.0 );
+
+   /* no mention of this in spec, but maybe id matrix expected? */
+   ASSIGN_4V( texUnit->RotMatrix, 1.0, 0.0, 0.0, 1.0 );
+
+   /* initialize current texture object ptrs to the shared default objects */
+   for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
+      _mesa_reference_texobj(&texUnit->CurrentTex[tex],
+                             ctx->Shared->DefaultTex[tex]);
+   }
+}
+
+
+/**
+ * Initialize texture state for the given context.
+ */
+GLboolean
+_mesa_init_texture(struct gl_context *ctx)
+{
+   GLuint u;
+
+   /* Texture group */
+   ctx->Texture.CurrentUnit = 0;      /* multitexture */
+   ctx->Texture._EnabledUnits = 0x0;
+   ctx->Texture.SharedPalette = GL_FALSE;
+   _mesa_init_colortable(&ctx->Texture.Palette);
+
+   for (u = 0; u < Elements(ctx->Texture.Unit); u++)
+      init_texture_unit(ctx, u);
+
+   /* After we're done initializing the context's texture state the default
+    * texture objects' refcounts should be at least
+    * MAX_COMBINED_TEXTURE_IMAGE_UNITS + 1.
+    */
+   assert(ctx->Shared->DefaultTex[TEXTURE_1D_INDEX]->RefCount
+          >= MAX_COMBINED_TEXTURE_IMAGE_UNITS + 1);
+
+   /* Allocate proxy textures */
+   if (!alloc_proxy_textures( ctx ))
+      return GL_FALSE;
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Free dynamically-allocted texture data attached to the given context.
+ */
+void
+_mesa_free_texture_data(struct gl_context *ctx)
+{
+   GLuint u, tgt;
+
+   /* unreference current textures */
+   for (u = 0; u < Elements(ctx->Texture.Unit); u++) {
+      /* The _Current texture could account for another reference */
+      _mesa_reference_texobj(&ctx->Texture.Unit[u]._Current, NULL);
+
+      for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
+         _mesa_reference_texobj(&ctx->Texture.Unit[u].CurrentTex[tgt], NULL);
+      }
+   }
+
+   /* Free proxy texture objects */
+   for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++)
+      ctx->Driver.DeleteTexture(ctx, ctx->Texture.ProxyTex[tgt]);
+}
+
+
+/**
+ * Update the default texture objects in the given context to reference those
+ * specified in the shared state and release those referencing the old 
+ * shared state.
+ */
+void
+_mesa_update_default_objects_texture(struct gl_context *ctx)
+{
+   GLuint u, tex;
+
+   for (u = 0; u < Elements(ctx->Texture.Unit); u++) {
+      struct gl_texture_unit *texUnit = &ctx->Texture.Unit[u];
+      for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
+         _mesa_reference_texobj(&texUnit->CurrentTex[tex],
+                                ctx->Shared->DefaultTex[tex]);
+      }
+   }
+}
diff --git a/mesalib/src/mesa/main/texstore.c b/mesalib/src/mesa/main/texstore.c
index 8a3e5f779..cd30fa021 100644
--- a/mesalib/src/mesa/main/texstore.c
+++ b/mesalib/src/mesa/main/texstore.c
@@ -61,6 +61,7 @@
 #include "mfeatures.h"
 #include "mtypes.h"
 #include "pack.h"
+#include "pbo.h"
 #include "imports.h"
 #include "pack.h"
 #include "texcompress.h"
@@ -4200,94 +4201,6 @@ _mesa_texstore(TEXSTORE_PARAMS)
 }
 
 
-/**
- * Check if an unpack PBO is active prior to fetching a texture image.
- * If so, do bounds checking and map the buffer into main memory.
- * Any errors detected will be recorded.
- * The caller _must_ call _mesa_unmap_teximage_pbo() too!
- */
-const GLvoid *
-_mesa_validate_pbo_teximage(struct gl_context *ctx, GLuint dimensions,
-			    GLsizei width, GLsizei height, GLsizei depth,
-			    GLenum format, GLenum type, const GLvoid *pixels,
-			    const struct gl_pixelstore_attrib *unpack,
-			    const char *funcName)
-{
-   GLubyte *buf;
-
-   if (!_mesa_is_bufferobj(unpack->BufferObj)) {
-      /* no PBO */
-      return pixels;
-   }
-   if (!_mesa_validate_pbo_access(dimensions, unpack, width, height, depth,
-                                  format, type, pixels)) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(invalid PBO access)");
-      return NULL;
-   }
-
-   buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
-                                          GL_READ_ONLY_ARB, unpack->BufferObj);
-   if (!buf) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(PBO is mapped)");
-      return NULL;
-   }
-
-   return ADD_POINTERS(buf, pixels);
-}
-
-
-/**
- * Check if an unpack PBO is active prior to fetching a compressed texture
- * image.
- * If so, do bounds checking and map the buffer into main memory.
- * Any errors detected will be recorded.
- * The caller _must_ call _mesa_unmap_teximage_pbo() too!
- */
-const GLvoid *
-_mesa_validate_pbo_compressed_teximage(struct gl_context *ctx,
-                                 GLsizei imageSize, const GLvoid *pixels,
-                                 const struct gl_pixelstore_attrib *packing,
-                                 const char *funcName)
-{
-   GLubyte *buf;
-
-   if (!_mesa_is_bufferobj(packing->BufferObj)) {
-      /* not using a PBO - return pointer unchanged */
-      return pixels;
-   }
-   if ((const GLubyte *) pixels + imageSize >
-       ((const GLubyte *) 0) + packing->BufferObj->Size) {
-      /* out of bounds read! */
-      _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(invalid PBO access)");
-      return NULL;
-   }
-
-   buf = (GLubyte*) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
-                                         GL_READ_ONLY_ARB, packing->BufferObj);
-   if (!buf) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(PBO is mapped");
-      return NULL;
-   }
-
-   return ADD_POINTERS(buf, pixels);
-}
-
-
-/**
- * This function must be called after either of the validate_pbo_*_teximage()
- * functions.  It unmaps the PBO buffer if it was mapped earlier.
- */
-void
-_mesa_unmap_teximage_pbo(struct gl_context *ctx,
-                         const struct gl_pixelstore_attrib *unpack)
-{
-   if (_mesa_is_bufferobj(unpack->BufferObj)) {
-      ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
-                              unpack->BufferObj);
-   }
-}
-
-
 /** Return texture size in bytes */
 static GLuint
 texture_size(const struct gl_texture_image *texImage)
diff --git a/mesalib/src/mesa/main/texstore.h b/mesalib/src/mesa/main/texstore.h
index 2f3c4e821..d56318709 100644
--- a/mesalib/src/mesa/main/texstore.h
+++ b/mesalib/src/mesa/main/texstore.h
@@ -206,22 +206,4 @@ _mesa_store_compressed_texsubimage3d(struct gl_context *ctx, GLenum target,
                                 struct gl_texture_image *texImage);
 
 
-extern const GLvoid *
-_mesa_validate_pbo_teximage(struct gl_context *ctx, GLuint dimensions,
-			    GLsizei width, GLsizei height, GLsizei depth,
-			    GLenum format, GLenum type, const GLvoid *pixels,
-			    const struct gl_pixelstore_attrib *unpack,
-			    const char *funcName);
-
-extern const GLvoid *
-_mesa_validate_pbo_compressed_teximage(struct gl_context *ctx,
-                                    GLsizei imageSize, const GLvoid *pixels,
-                                    const struct gl_pixelstore_attrib *packing,
-                                    const char *funcName);
-
-extern void
-_mesa_unmap_teximage_pbo(struct gl_context *ctx,
-                         const struct gl_pixelstore_attrib *unpack);
-
-
 #endif
diff --git a/mesalib/src/mesa/sources.mak b/mesalib/src/mesa/sources.mak
index bdf4126cf..a8c0bbd2b 100644
--- a/mesalib/src/mesa/sources.mak
+++ b/mesalib/src/mesa/sources.mak
@@ -59,6 +59,7 @@ MAIN_SOURCES = \
 	main/multisample.c \
 	main/nvprogram.c \
 	main/pack.c \
+	main/pbo.c \
 	main/pixel.c \
 	main/pixelstore.c \
 	main/pixeltransfer.c \
diff --git a/mesalib/src/mesa/state_tracker/st_cb_bitmap.c b/mesalib/src/mesa/state_tracker/st_cb_bitmap.c
index 0ea567155..149f1ca44 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_bitmap.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_bitmap.c
@@ -35,6 +35,7 @@
 #include "main/bufferobj.h"
 #include "main/macros.h"
 #include "main/mfeatures.h"
+#include "main/pbo.h"
 #include "program/program.h"
 #include "program/prog_print.h"
 
diff --git a/mesalib/src/mesa/state_tracker/st_cb_drawpixels.c b/mesalib/src/mesa/state_tracker/st_cb_drawpixels.c
index 2c4746622..c2b4e1808 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_drawpixels.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_drawpixels.c
@@ -1,1487 +1,1488 @@
-/**************************************************************************

- * 

- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.

- * All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the

- * "Software"), to deal in the Software without restriction, including

- * without limitation the rights to use, copy, modify, merge, publish,

- * distribute, sub license, and/or sell copies of the Software, and to

- * permit persons to whom the Software is furnished to do so, subject to

- * the following conditions:

- * 

- * The above copyright notice and this permission notice (including the

- * next paragraph) shall be included in all copies or substantial portions

- * of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.

- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR

- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- * 

- **************************************************************************/

-

- /*

-  * Authors:

-  *   Brian Paul

-  */

-

-#include "main/imports.h"

-#include "main/image.h"

-#include "main/bufferobj.h"

-#include "main/macros.h"

-#include "main/mfeatures.h"

-#include "main/mtypes.h"

-#include "main/pack.h"

-#include "main/texformat.h"

-#include "main/texstore.h"

-#include "program/program.h"

-#include "program/prog_print.h"

-#include "program/prog_instruction.h"

-

-#include "st_atom.h"

-#include "st_atom_constbuf.h"

-#include "st_cb_drawpixels.h"

-#include "st_cb_readpixels.h"

-#include "st_cb_fbo.h"

-#include "st_context.h"

-#include "st_debug.h"

-#include "st_format.h"

-#include "st_program.h"

-#include "st_texture.h"

-

-#include "pipe/p_context.h"

-#include "pipe/p_defines.h"

-#include "tgsi/tgsi_ureg.h"

-#include "util/u_draw_quad.h"

-#include "util/u_format.h"

-#include "util/u_inlines.h"

-#include "util/u_math.h"

-#include "util/u_tile.h"

-#include "cso_cache/cso_context.h"

-

-

-#if FEATURE_drawpix

-

-/**

- * Check if the given program is:

- * 0: MOVE result.color, fragment.color;

- * 1: END;

- */

-static GLboolean

-is_passthrough_program(const struct gl_fragment_program *prog)

-{

-   if (prog->Base.NumInstructions == 2) {

-      const struct prog_instruction *inst = prog->Base.Instructions;

-      if (inst[0].Opcode == OPCODE_MOV &&

-          inst[1].Opcode == OPCODE_END &&

-          inst[0].DstReg.File == PROGRAM_OUTPUT &&

-          inst[0].DstReg.Index == FRAG_RESULT_COLOR &&

-          inst[0].DstReg.WriteMask == WRITEMASK_XYZW &&

-          inst[0].SrcReg[0].File == PROGRAM_INPUT &&

-          inst[0].SrcReg[0].Index == FRAG_ATTRIB_COL0 &&

-          inst[0].SrcReg[0].Swizzle == SWIZZLE_XYZW) {

-         return GL_TRUE;

-      }

-   }

-   return GL_FALSE;

-}

-

-

-

-/**

- * Make fragment shader for glDraw/CopyPixels.  This shader is made

- * by combining the pixel transfer shader with the user-defined shader.

- * \param fpIn  the current/incoming fragment program

- * \param fpOut  returns the combined fragment program

- */

-void

-st_make_drawpix_fragment_program(struct st_context *st,

-                                 struct gl_fragment_program *fpIn,

-                                 struct gl_fragment_program **fpOut)

-{

-   struct gl_program *newProg;

-

-   if (is_passthrough_program(fpIn)) {

-      newProg = (struct gl_program *) _mesa_clone_fragment_program(st->ctx,

-                                             &st->pixel_xfer.program->Base);

-   }

-   else {

-#if 0

-      /* debug */

-      printf("Base program:\n");

-      _mesa_print_program(&fpIn->Base);

-      printf("DrawPix program:\n");

-      _mesa_print_program(&st->pixel_xfer.program->Base.Base);

-#endif

-      newProg = _mesa_combine_programs(st->ctx,

-                                       &st->pixel_xfer.program->Base.Base,

-                                       &fpIn->Base);

-   }

-

-#if 0

-   /* debug */

-   printf("Combined DrawPixels program:\n");

-   _mesa_print_program(newProg);

-   printf("InputsRead: 0x%x\n", newProg->InputsRead);

-   printf("OutputsWritten: 0x%x\n", newProg->OutputsWritten);

-   _mesa_print_parameter_list(newProg->Parameters);

-#endif

-

-   *fpOut = (struct gl_fragment_program *) newProg;

-}

-

-

-/**

- * Create fragment program that does a TEX() instruction to get a Z and/or

- * stencil value value, then writes to FRAG_RESULT_DEPTH/FRAG_RESULT_STENCIL.

- * Used for glDrawPixels(GL_DEPTH_COMPONENT / GL_STENCIL_INDEX).

- * Pass fragment color through as-is.

- * \return pointer to the gl_fragment program

- */

-struct gl_fragment_program *

-st_make_drawpix_z_stencil_program(struct st_context *st,

-                                  GLboolean write_depth,

-                                  GLboolean write_stencil)

-{

-   struct gl_context *ctx = st->ctx;

-   struct gl_program *p;

-   struct gl_fragment_program *fp;

-   GLuint ic = 0;

-   const GLuint shaderIndex = write_depth * 2 + write_stencil;

-

-   assert(shaderIndex < Elements(st->drawpix.shaders));

-

-   if (st->drawpix.shaders[shaderIndex]) {

-      /* already have the proper shader */

-      return st->drawpix.shaders[shaderIndex];

-   }

-

-   /*

-    * Create shader now

-    */

-   p = ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);

-   if (!p)

-      return NULL;

-

-   p->NumInstructions = write_depth ? 2 : 1;

-   p->NumInstructions += write_stencil ? 1 : 0;

-

-   p->Instructions = _mesa_alloc_instructions(p->NumInstructions);

-   if (!p->Instructions) {

-      ctx->Driver.DeleteProgram(ctx, p);

-      return NULL;

-   }

-   _mesa_init_instructions(p->Instructions, p->NumInstructions);

-

-   if (write_depth) {

-      /* TEX result.depth, fragment.texcoord[0], texture[0], 2D; */

-      p->Instructions[ic].Opcode = OPCODE_TEX;

-      p->Instructions[ic].DstReg.File = PROGRAM_OUTPUT;

-      p->Instructions[ic].DstReg.Index = FRAG_RESULT_DEPTH;

-      p->Instructions[ic].DstReg.WriteMask = WRITEMASK_Z;

-      p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT;

-      p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0;

-      p->Instructions[ic].TexSrcUnit = 0;

-      p->Instructions[ic].TexSrcTarget = TEXTURE_2D_INDEX;

-      ic++;

-   }

-

-   if (write_stencil) {

-      /* TEX result.stencil, fragment.texcoord[0], texture[0], 2D; */

-      p->Instructions[ic].Opcode = OPCODE_TEX;

-      p->Instructions[ic].DstReg.File = PROGRAM_OUTPUT;

-      p->Instructions[ic].DstReg.Index = FRAG_RESULT_STENCIL;

-      p->Instructions[ic].DstReg.WriteMask = WRITEMASK_Y;

-      p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT;

-      p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0;

-      p->Instructions[ic].TexSrcUnit = 1;

-      p->Instructions[ic].TexSrcTarget = TEXTURE_2D_INDEX;

-      ic++;

-   }

-

-   /* END; */

-   p->Instructions[ic++].Opcode = OPCODE_END;

-

-   assert(ic == p->NumInstructions);

-

-   p->InputsRead = FRAG_BIT_TEX0 | FRAG_BIT_COL0;

-   p->OutputsWritten = 0;

-   if (write_depth)

-      p->OutputsWritten |= (1 << FRAG_RESULT_DEPTH);

-   if (write_stencil)

-      p->OutputsWritten |= (1 << FRAG_RESULT_STENCIL);

-

-   p->SamplersUsed =  0x1;  /* sampler 0 (bit 0) is used */

-   if (write_stencil)

-      p->SamplersUsed |= 1 << 1;

-

-   fp = (struct gl_fragment_program *) p;

-

-   /* save the new shader */

-   st->drawpix.shaders[shaderIndex] = fp;

-

-   return fp;

-}

-

-

-/**

- * Create a simple vertex shader that just passes through the

- * vertex position and texcoord (and optionally, color).

- */

-static void *

-make_passthrough_vertex_shader(struct st_context *st, 

-                               GLboolean passColor)

-{

-   if (!st->drawpix.vert_shaders[passColor]) {

-      struct ureg_program *ureg = ureg_create( TGSI_PROCESSOR_VERTEX );

-

-      if (ureg == NULL)

-         return NULL;

-

-      /* MOV result.pos, vertex.pos; */

-      ureg_MOV(ureg, 

-               ureg_DECL_output( ureg, TGSI_SEMANTIC_POSITION, 0 ),

-               ureg_DECL_vs_input( ureg, 0 ));

-      

-      /* MOV result.texcoord0, vertex.attr[1]; */

-      ureg_MOV(ureg, 

-               ureg_DECL_output( ureg, TGSI_SEMANTIC_GENERIC, 0 ),

-               ureg_DECL_vs_input( ureg, 1 ));

-      

-      if (passColor) {

-         /* MOV result.color0, vertex.attr[2]; */

-         ureg_MOV(ureg, 

-                  ureg_DECL_output( ureg, TGSI_SEMANTIC_COLOR, 0 ),

-                  ureg_DECL_vs_input( ureg, 2 ));

-      }

-

-      ureg_END( ureg );

-      

-      st->drawpix.vert_shaders[passColor] = 

-         ureg_create_shader_and_destroy( ureg, st->pipe );

-   }

-

-   return st->drawpix.vert_shaders[passColor];

-}

-

-

-/**

- * Return a texture base format for drawing/copying an image

- * of the given format.

- */

-static GLenum

-base_format(GLenum format)

-{

-   switch (format) {

-   case GL_DEPTH_COMPONENT:

-      return GL_DEPTH_COMPONENT;

-   case GL_DEPTH_STENCIL:

-      return GL_DEPTH_STENCIL;

-   case GL_STENCIL_INDEX:

-      return GL_STENCIL_INDEX;

-   default:

-      return GL_RGBA;

-   }

-}

-

-

-/**

- * Return a texture internalFormat for drawing/copying an image

- * of the given format and type.

- */

-static GLenum

-internal_format(GLenum format, GLenum type)

-{

-   switch (format) {

-   case GL_DEPTH_COMPONENT:

-      return GL_DEPTH_COMPONENT;

-   case GL_DEPTH_STENCIL:

-      return GL_DEPTH_STENCIL;

-   case GL_STENCIL_INDEX:

-      return GL_STENCIL_INDEX;

-   default:

-      if (_mesa_is_integer_format(format)) {

-         switch (type) {

-         case GL_BYTE:

-            return GL_RGBA8I;

-         case GL_UNSIGNED_BYTE:

-            return GL_RGBA8UI;

-         case GL_SHORT:

-            return GL_RGBA16I;

-         case GL_UNSIGNED_SHORT:

-            return GL_RGBA16UI;

-         case GL_INT:

-            return GL_RGBA32I;

-         case GL_UNSIGNED_INT:

-            return GL_RGBA32UI;

-         default:

-            assert(0 && "Unexpected type in internal_format()");

-            return GL_RGBA_INTEGER;

-         }

-      }

-      else {

-         return GL_RGBA;

-      }

-   }

-}

-

-

-/**

- * Create a temporary texture to hold an image of the given size.

- * If width, height are not POT and the driver only handles POT textures,

- * allocate the next larger size of texture that is POT.

- */

-static struct pipe_resource *

-alloc_texture(struct st_context *st, GLsizei width, GLsizei height,

-              enum pipe_format texFormat)

-{

-   struct pipe_resource *pt;

-

-   pt = st_texture_create(st, st->internal_target, texFormat, 0,

-                          width, height, 1, 1, PIPE_BIND_SAMPLER_VIEW);

-

-   return pt;

-}

-

-

-/**

- * Make texture containing an image for glDrawPixels image.

- * If 'pixels' is NULL, leave the texture image data undefined.

- */

-static struct pipe_resource *

-make_texture(struct st_context *st,

-	     GLsizei width, GLsizei height, GLenum format, GLenum type,

-	     const struct gl_pixelstore_attrib *unpack,

-	     const GLvoid *pixels)

-{

-   struct gl_context *ctx = st->ctx;

-   struct pipe_context *pipe = st->pipe;

-   gl_format mformat;

-   struct pipe_resource *pt;

-   enum pipe_format pipeFormat;

-   GLuint cpp;

-   GLenum baseFormat, intFormat;

-

-   baseFormat = base_format(format);

-   intFormat = internal_format(format, type);

-

-   mformat = st_ChooseTextureFormat_renderable(ctx, intFormat,

-                                               format, type, GL_FALSE);

-   assert(mformat);

-

-   pipeFormat = st_mesa_format_to_pipe_format(mformat);

-   assert(pipeFormat);

-   cpp = util_format_get_blocksize(pipeFormat);

-

-   pixels = _mesa_map_pbo_source(ctx, unpack, pixels);

-   if (!pixels)

-      return NULL;

-

-   /* alloc temporary texture */

-   pt = alloc_texture(st, width, height, pipeFormat);

-   if (!pt) {

-      _mesa_unmap_pbo_source(ctx, unpack);

-      return NULL;

-   }

-

-   {

-      struct pipe_transfer *transfer;

-      static const GLuint dstImageOffsets = 0;

-      GLboolean success;

-      GLubyte *dest;

-      const GLbitfield imageTransferStateSave = ctx->_ImageTransferState;

-

-      /* we'll do pixel transfer in a fragment shader */

-      ctx->_ImageTransferState = 0x0;

-

-      transfer = pipe_get_transfer(st->pipe, pt, 0, 0,

-                                   PIPE_TRANSFER_WRITE, 0, 0,

-                                   width, height);

-

-      /* map texture transfer */

-      dest = pipe_transfer_map(pipe, transfer);

-

-

-      /* Put image into texture transfer.

-       * Note that the image is actually going to be upside down in

-       * the texture.  We deal with that with texcoords.

-       */

-      success = _mesa_texstore(ctx, 2,           /* dims */

-                               baseFormat,       /* baseInternalFormat */

-                               mformat,          /* gl_format */

-                               dest,             /* dest */

-                               0, 0, 0,          /* dstX/Y/Zoffset */

-                               transfer->stride, /* dstRowStride, bytes */

-                               &dstImageOffsets, /* dstImageOffsets */

-                               width, height, 1, /* size */

-                               format, type,     /* src format/type */

-                               pixels,           /* data source */

-                               unpack);

-

-      /* unmap */

-      pipe_transfer_unmap(pipe, transfer);

-      pipe->transfer_destroy(pipe, transfer);

-

-      assert(success);

-

-      /* restore */

-      ctx->_ImageTransferState = imageTransferStateSave;

-   }

-

-   _mesa_unmap_pbo_source(ctx, unpack);

-

-   return pt;

-}

-

-

-/**

- * Draw quad with texcoords and optional color.

- * Coords are gallium window coords with y=0=top.

- * \param color  may be null

- * \param invertTex  if true, flip texcoords vertically

- */

-static void

-draw_quad(struct gl_context *ctx, GLfloat x0, GLfloat y0, GLfloat z,

-          GLfloat x1, GLfloat y1, const GLfloat *color,

-          GLboolean invertTex, GLfloat maxXcoord, GLfloat maxYcoord)

-{

-   struct st_context *st = st_context(ctx);

-   struct pipe_context *pipe = st->pipe;

-   GLfloat verts[4][3][4]; /* four verts, three attribs, XYZW */

-

-   /* setup vertex data */

-   {

-      const struct gl_framebuffer *fb = st->ctx->DrawBuffer;

-      const GLfloat fb_width = (GLfloat) fb->Width;

-      const GLfloat fb_height = (GLfloat) fb->Height;

-      const GLfloat clip_x0 = x0 / fb_width * 2.0f - 1.0f;

-      const GLfloat clip_y0 = y0 / fb_height * 2.0f - 1.0f;

-      const GLfloat clip_x1 = x1 / fb_width * 2.0f - 1.0f;

-      const GLfloat clip_y1 = y1 / fb_height * 2.0f - 1.0f;

-      const GLfloat sLeft = 0.0f, sRight = maxXcoord;

-      const GLfloat tTop = invertTex ? maxYcoord : 0.0f;

-      const GLfloat tBot = invertTex ? 0.0f : maxYcoord;

-      GLuint i;

-

-      /* upper-left */

-      verts[0][0][0] = clip_x0;    /* v[0].attr[0].x */

-      verts[0][0][1] = clip_y0;    /* v[0].attr[0].y */

-

-      /* upper-right */

-      verts[1][0][0] = clip_x1;

-      verts[1][0][1] = clip_y0;

-

-      /* lower-right */

-      verts[2][0][0] = clip_x1;

-      verts[2][0][1] = clip_y1;

-

-      /* lower-left */

-      verts[3][0][0] = clip_x0;

-      verts[3][0][1] = clip_y1;

-

-      verts[0][1][0] = sLeft; /* v[0].attr[1].S */

-      verts[0][1][1] = tTop;  /* v[0].attr[1].T */

-      verts[1][1][0] = sRight;

-      verts[1][1][1] = tTop;

-      verts[2][1][0] = sRight;

-      verts[2][1][1] = tBot;

-      verts[3][1][0] = sLeft;

-      verts[3][1][1] = tBot;

-

-      /* same for all verts: */

-      if (color) {

-         for (i = 0; i < 4; i++) {

-            verts[i][0][2] = z;         /* v[i].attr[0].z */

-            verts[i][0][3] = 1.0f;      /* v[i].attr[0].w */

-            verts[i][2][0] = color[0];  /* v[i].attr[2].r */

-            verts[i][2][1] = color[1];  /* v[i].attr[2].g */

-            verts[i][2][2] = color[2];  /* v[i].attr[2].b */

-            verts[i][2][3] = color[3];  /* v[i].attr[2].a */

-            verts[i][1][2] = 0.0f;      /* v[i].attr[1].R */

-            verts[i][1][3] = 1.0f;      /* v[i].attr[1].Q */

-         }

-      }

-      else {

-         for (i = 0; i < 4; i++) {

-            verts[i][0][2] = z;    /*Z*/

-            verts[i][0][3] = 1.0f; /*W*/

-            verts[i][1][2] = 0.0f; /*R*/

-            verts[i][1][3] = 1.0f; /*Q*/

-         }

-      }

-   }

-

-   {

-      struct pipe_resource *buf;

-

-      /* allocate/load buffer object with vertex data */

-      buf = pipe_buffer_create(pipe->screen,

-			       PIPE_BIND_VERTEX_BUFFER,

-			       PIPE_USAGE_STATIC,

-                               sizeof(verts));

-      pipe_buffer_write(st->pipe, buf, 0, sizeof(verts), verts);

-

-      util_draw_vertex_buffer(pipe, st->cso_context, buf, 0,

-                              PIPE_PRIM_QUADS,

-                              4,  /* verts */

-                              3); /* attribs/vert */

-      pipe_resource_reference(&buf, NULL);

-   }

-}

-

-

-

-static void

-draw_textured_quad(struct gl_context *ctx, GLint x, GLint y, GLfloat z,

-                   GLsizei width, GLsizei height,

-                   GLfloat zoomX, GLfloat zoomY,

-                   struct pipe_sampler_view **sv,

-                   int num_sampler_view,

-                   void *driver_vp,

-                   void *driver_fp,

-                   const GLfloat *color,

-                   GLboolean invertTex,

-                   GLboolean write_depth, GLboolean write_stencil)

-{

-   struct st_context *st = st_context(ctx);

-   struct pipe_context *pipe = st->pipe;

-   struct cso_context *cso = st->cso_context;

-   GLfloat x0, y0, x1, y1;

-   GLsizei maxSize;

-   boolean normalized = sv[0]->texture->target != PIPE_TEXTURE_RECT;

-

-   /* limit checks */

-   /* XXX if DrawPixels image is larger than max texture size, break

-    * it up into chunks.

-    */

-   maxSize = 1 << (pipe->screen->get_param(pipe->screen,

-                                        PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1);

-   assert(width <= maxSize);

-   assert(height <= maxSize);

-

-   cso_save_rasterizer(cso);

-   cso_save_viewport(cso);

-   cso_save_samplers(cso);

-   cso_save_fragment_sampler_views(cso);

-   cso_save_fragment_shader(cso);

-   cso_save_vertex_shader(cso);

-   cso_save_vertex_elements(cso);

-   cso_save_vertex_buffers(cso);

-   if (write_stencil) {

-      cso_save_depth_stencil_alpha(cso);

-      cso_save_blend(cso);

-   }

-

-   /* rasterizer state: just scissor */

-   {

-      struct pipe_rasterizer_state rasterizer;

-      memset(&rasterizer, 0, sizeof(rasterizer));

-      rasterizer.gl_rasterization_rules = 1;

-      rasterizer.scissor = ctx->Scissor.Enabled;

-      cso_set_rasterizer(cso, &rasterizer);

-   }

-

-   if (write_stencil) {

-      /* Stencil writing bypasses the normal fragment pipeline to

-       * disable color writing and set stencil test to always pass.

-       */

-      struct pipe_depth_stencil_alpha_state dsa;

-      struct pipe_blend_state blend;

-

-      /* depth/stencil */

-      memset(&dsa, 0, sizeof(dsa));

-      dsa.stencil[0].enabled = 1;

-      dsa.stencil[0].func = PIPE_FUNC_ALWAYS;

-      dsa.stencil[0].writemask = ctx->Stencil.WriteMask[0] & 0xff;

-      dsa.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE;

-      if (write_depth) {

-         /* writing depth+stencil: depth test always passes */

-         dsa.depth.enabled = 1;

-         dsa.depth.writemask = ctx->Depth.Mask;

-         dsa.depth.func = PIPE_FUNC_ALWAYS;

-      }

-      cso_set_depth_stencil_alpha(cso, &dsa);

-

-      /* blend (colormask) */

-      memset(&blend, 0, sizeof(blend));

-      cso_set_blend(cso, &blend);

-   }

-

-   /* fragment shader state: TEX lookup program */

-   cso_set_fragment_shader_handle(cso, driver_fp);

-

-   /* vertex shader state: position + texcoord pass-through */

-   cso_set_vertex_shader_handle(cso, driver_vp);

-

-

-   /* texture sampling state: */

-   {

-      struct pipe_sampler_state sampler;

-      memset(&sampler, 0, sizeof(sampler));

-      sampler.wrap_s = PIPE_TEX_WRAP_CLAMP;

-      sampler.wrap_t = PIPE_TEX_WRAP_CLAMP;

-      sampler.wrap_r = PIPE_TEX_WRAP_CLAMP;

-      sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;

-      sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;

-      sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;

-      sampler.normalized_coords = normalized;

-

-      cso_single_sampler(cso, 0, &sampler);

-      if (num_sampler_view > 1) {

-         cso_single_sampler(cso, 1, &sampler);

-      }

-      cso_single_sampler_done(cso);

-   }

-

-   /* viewport state: viewport matching window dims */

-   {

-      const float w = (float) ctx->DrawBuffer->Width;

-      const float h = (float) ctx->DrawBuffer->Height;

-      struct pipe_viewport_state vp;

-      vp.scale[0] =  0.5f * w;

-      vp.scale[1] = -0.5f * h;

-      vp.scale[2] = 0.5f;

-      vp.scale[3] = 1.0f;

-      vp.translate[0] = 0.5f * w;

-      vp.translate[1] = 0.5f * h;

-      vp.translate[2] = 0.5f;

-      vp.translate[3] = 0.0f;

-      cso_set_viewport(cso, &vp);

-   }

-

-   cso_set_vertex_elements(cso, 3, st->velems_util_draw);

-

-   /* texture state: */

-   cso_set_fragment_sampler_views(cso, num_sampler_view, sv);

-

-   /* Compute Gallium window coords (y=0=top) with pixel zoom.

-    * Recall that these coords are transformed by the current

-    * vertex shader and viewport transformation.

-    */

-   if (st_fb_orientation(ctx->DrawBuffer) == Y_0_BOTTOM) {

-      y = ctx->DrawBuffer->Height - (int) (y + height * ctx->Pixel.ZoomY);

-      invertTex = !invertTex;

-   }

-

-   x0 = (GLfloat) x;

-   x1 = x + width * ctx->Pixel.ZoomX;

-   y0 = (GLfloat) y;

-   y1 = y + height * ctx->Pixel.ZoomY;

-

-   /* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */

-   z = z * 2.0 - 1.0;

-

-   draw_quad(ctx, x0, y0, z, x1, y1, color, invertTex,

-             normalized ? ((GLfloat) width / sv[0]->texture->width0) : (GLfloat)width,

-             normalized ? ((GLfloat) height / sv[0]->texture->height0) : (GLfloat)height);

-

-   /* restore state */

-   cso_restore_rasterizer(cso);

-   cso_restore_viewport(cso);

-   cso_restore_samplers(cso);

-   cso_restore_fragment_sampler_views(cso);

-   cso_restore_fragment_shader(cso);

-   cso_restore_vertex_shader(cso);

-   cso_restore_vertex_elements(cso);

-   cso_restore_vertex_buffers(cso);

-   if (write_stencil) {

-      cso_restore_depth_stencil_alpha(cso);

-      cso_restore_blend(cso);

-   }

-}

-

-

-/**

- * Software fallback to do glDrawPixels(GL_STENCIL_INDEX) when we

- * can't use a fragment shader to write stencil values.

- */

-static void

-draw_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,

-                    GLsizei width, GLsizei height, GLenum format, GLenum type,

-                    const struct gl_pixelstore_attrib *unpack,

-                    const GLvoid *pixels)

-{

-   struct st_context *st = st_context(ctx);

-   struct pipe_context *pipe = st->pipe;

-   struct st_renderbuffer *strb;

-   enum pipe_transfer_usage usage;

-   struct pipe_transfer *pt;

-   const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;

-   GLint skipPixels;

-   ubyte *stmap;

-   struct gl_pixelstore_attrib clippedUnpack = *unpack;

-

-   if (!zoom) {

-      if (!_mesa_clip_drawpixels(ctx, &x, &y, &width, &height,

-                                 &clippedUnpack)) {

-         /* totally clipped */

-         return;

-      }

-   }

-

-   strb = st_renderbuffer(ctx->DrawBuffer->

-                          Attachment[BUFFER_STENCIL].Renderbuffer);

-

-   if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {

-      y = ctx->DrawBuffer->Height - y - height;

-   }

-

-   if(format != GL_DEPTH_STENCIL && 

-      util_format_get_component_bits(strb->format,

-                                     UTIL_FORMAT_COLORSPACE_ZS, 0) != 0)

-      usage = PIPE_TRANSFER_READ_WRITE;

-   else

-      usage = PIPE_TRANSFER_WRITE;

-

-   pt = pipe_get_transfer(st_context(ctx)->pipe, strb->texture, 0, 0,

-                                     usage, x, y,

-                                     width, height);

-

-   stmap = pipe_transfer_map(pipe, pt);

-

-   pixels = _mesa_map_pbo_source(ctx, &clippedUnpack, pixels);

-   assert(pixels);

-

-   /* if width > MAX_WIDTH, have to process image in chunks */

-   skipPixels = 0;

-   while (skipPixels < width) {

-      const GLint spanX = skipPixels;

-      const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);

-      GLint row;

-      for (row = 0; row < height; row++) {

-         GLubyte sValues[MAX_WIDTH];

-         GLuint zValues[MAX_WIDTH];

-         GLenum destType = GL_UNSIGNED_BYTE;

-         const GLvoid *source = _mesa_image_address2d(&clippedUnpack, pixels,

-                                                      width, height,

-                                                      format, type,

-                                                      row, skipPixels);

-         _mesa_unpack_stencil_span(ctx, spanWidth, destType, sValues,

-                                   type, source, &clippedUnpack,

-                                   ctx->_ImageTransferState);

-

-         if (format == GL_DEPTH_STENCIL) {

-            _mesa_unpack_depth_span(ctx, spanWidth, GL_UNSIGNED_INT, zValues,

-                                    (1 << 24) - 1, type, source,

-                                    &clippedUnpack);

-         }

-

-         if (zoom) {

-            _mesa_problem(ctx, "Gallium glDrawPixels(GL_STENCIL) with "

-                          "zoom not complete");

-         }

-

-         {

-            GLint spanY;

-

-            if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {

-               spanY = height - row - 1;

-            }

-            else {

-               spanY = row;

-            }

-

-            /* now pack the stencil (and Z) values in the dest format */

-            switch (pt->resource->format) {

-            case PIPE_FORMAT_S8_USCALED:

-               {

-                  ubyte *dest = stmap + spanY * pt->stride + spanX;

-                  assert(usage == PIPE_TRANSFER_WRITE);

-                  memcpy(dest, sValues, spanWidth);

-               }

-               break;

-            case PIPE_FORMAT_Z24_UNORM_S8_USCALED:

-               if (format == GL_DEPTH_STENCIL) {

-                  uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);

-                  GLint k;

-                  assert(usage == PIPE_TRANSFER_WRITE);

-                  for (k = 0; k < spanWidth; k++) {

-                     dest[k] = zValues[k] | (sValues[k] << 24);

-                  }

-               }

-               else {

-                  uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);

-                  GLint k;

-                  assert(usage == PIPE_TRANSFER_READ_WRITE);

-                  for (k = 0; k < spanWidth; k++) {

-                     dest[k] = (dest[k] & 0xffffff) | (sValues[k] << 24);

-                  }

-               }

-               break;

-            case PIPE_FORMAT_S8_USCALED_Z24_UNORM:

-               if (format == GL_DEPTH_STENCIL) {

-                  uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);

-                  GLint k;

-                  assert(usage == PIPE_TRANSFER_WRITE);

-                  for (k = 0; k < spanWidth; k++) {

-                     dest[k] = (zValues[k] << 8) | (sValues[k] & 0xff);

-                  }

-               }

-               else {

-                  uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);

-                  GLint k;

-                  assert(usage == PIPE_TRANSFER_READ_WRITE);

-                  for (k = 0; k < spanWidth; k++) {

-                     dest[k] = (dest[k] & 0xffffff00) | (sValues[k] & 0xff);

-                  }

-               }

-               break;

-            default:

-               assert(0);

-            }

-         }

-      }

-      skipPixels += spanWidth;

-   }

-

-   _mesa_unmap_pbo_source(ctx, &clippedUnpack);

-

-   /* unmap the stencil buffer */

-   pipe_transfer_unmap(pipe, pt);

-   pipe->transfer_destroy(pipe, pt);

-}

-

-

-/**

- * Get fragment program variant for a glDrawPixels or glCopyPixels

- * command for RGBA data.

- */

-static struct st_fp_variant *

-get_color_fp_variant(struct st_context *st)

-{

-   struct gl_context *ctx = st->ctx;

-   struct st_fp_variant_key key;

-   struct st_fp_variant *fpv;

-

-   memset(&key, 0, sizeof(key));

-

-   key.st = st;

-   key.drawpixels = 1;

-   key.scaleAndBias = (ctx->Pixel.RedBias != 0.0 ||

-                       ctx->Pixel.RedScale != 1.0 ||

-                       ctx->Pixel.GreenBias != 0.0 ||

-                       ctx->Pixel.GreenScale != 1.0 ||

-                       ctx->Pixel.BlueBias != 0.0 ||

-                       ctx->Pixel.BlueScale != 1.0 ||

-                       ctx->Pixel.AlphaBias != 0.0 ||

-                       ctx->Pixel.AlphaScale != 1.0);

-   key.pixelMaps = ctx->Pixel.MapColorFlag;

-

-   fpv = st_get_fp_variant(st, st->fp, &key);

-

-   return fpv;

-}

-

-

-/**

- * Get fragment program variant for a glDrawPixels or glCopyPixels

- * command for depth/stencil data.

- */

-static struct st_fp_variant *

-get_depth_stencil_fp_variant(struct st_context *st, GLboolean write_depth,

-                             GLboolean write_stencil)

-{

-   struct st_fp_variant_key key;

-   struct st_fp_variant *fpv;

-

-   memset(&key, 0, sizeof(key));

-

-   key.st = st;

-   key.drawpixels = 1;

-   key.drawpixels_z = write_depth;

-   key.drawpixels_stencil = write_stencil;

-

-   fpv = st_get_fp_variant(st, st->fp, &key);

-

-   return fpv;

-}

-

-

-/**

- * Called via ctx->Driver.DrawPixels()

- */

-static void

-st_DrawPixels(struct gl_context *ctx, GLint x, GLint y,

-              GLsizei width, GLsizei height,

-              GLenum format, GLenum type,

-              const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)

-{

-   void *driver_vp, *driver_fp;

-   struct st_context *st = st_context(ctx);

-   const GLfloat *color;

-   struct pipe_context *pipe = st->pipe;

-   GLboolean write_stencil = GL_FALSE, write_depth = GL_FALSE;

-   struct pipe_sampler_view *sv[2];

-   int num_sampler_view = 1;

-   enum pipe_format stencil_format = PIPE_FORMAT_NONE;

-   struct st_fp_variant *fpv;

-

-   if (format == GL_DEPTH_STENCIL)

-      write_stencil = write_depth = GL_TRUE;

-   else if (format == GL_STENCIL_INDEX)

-      write_stencil = GL_TRUE;

-   else if (format == GL_DEPTH_COMPONENT)

-      write_depth = GL_TRUE;

-

-   if (write_stencil) {

-      enum pipe_format tex_format;

-      /* can we write to stencil if not fallback */

-      if (!pipe->screen->get_param(pipe->screen, PIPE_CAP_SHADER_STENCIL_EXPORT))

-	 goto stencil_fallback;

-      

-      tex_format = st_choose_format(st->pipe->screen, base_format(format),

-                                    PIPE_TEXTURE_2D,

-				    0, PIPE_BIND_SAMPLER_VIEW);

-      if (tex_format == PIPE_FORMAT_Z24_UNORM_S8_USCALED)

-	 stencil_format = PIPE_FORMAT_X24S8_USCALED;

-      else if (tex_format == PIPE_FORMAT_S8_USCALED_Z24_UNORM)

-	 stencil_format = PIPE_FORMAT_S8X24_USCALED;

-      else

-	 stencil_format = PIPE_FORMAT_S8_USCALED;

-      if (stencil_format == PIPE_FORMAT_NONE)

-	 goto stencil_fallback;

-   }

-

-   /* Mesa state should be up to date by now */

-   assert(ctx->NewState == 0x0);

-

-   st_validate_state(st);

-

-   /*

-    * Get vertex/fragment shaders

-    */

-   if (write_depth || write_stencil) {

-      fpv = get_depth_stencil_fp_variant(st, write_depth, write_stencil);

-

-      driver_fp = fpv->driver_shader;

-

-      driver_vp = make_passthrough_vertex_shader(st, GL_TRUE);

-

-      color = ctx->Current.RasterColor;

-   }

-   else {

-      fpv = get_color_fp_variant(st);

-

-      driver_fp = fpv->driver_shader;

-

-      driver_vp = make_passthrough_vertex_shader(st, GL_FALSE);

-

-      color = NULL;

-      if (st->pixel_xfer.pixelmap_enabled) {

-	  sv[1] = st->pixel_xfer.pixelmap_sampler_view;

-	  num_sampler_view++;

-      }

-   }

-

-   /* update fragment program constants */

-   st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT);

-

-   /* draw with textured quad */

-   {

-      struct pipe_resource *pt

-         = make_texture(st, width, height, format, type, unpack, pixels);

-      if (pt) {

-         sv[0] = st_create_texture_sampler_view(st->pipe, pt);

-

-         if (sv[0]) {

-	    if (write_stencil) {

-	       sv[1] = st_create_texture_sampler_view_format(st->pipe, pt,

-                                                             stencil_format);

-	       num_sampler_view++;

-	    }

-

-            draw_textured_quad(ctx, x, y, ctx->Current.RasterPos[2],

-                               width, height,

-                               ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,

-                               sv,

-                               num_sampler_view,

-                               driver_vp,

-                               driver_fp,

-                               color, GL_FALSE, write_depth, write_stencil);

-            pipe_sampler_view_reference(&sv[0], NULL);

-            if (num_sampler_view > 1)

-               pipe_sampler_view_reference(&sv[1], NULL);

-         }

-         pipe_resource_reference(&pt, NULL);

-      }

-   }

-   return;

-

-stencil_fallback:

-   draw_stencil_pixels(ctx, x, y, width, height, format, type,

-		       unpack, pixels);

-}

-

-

-

-/**

- * Software fallback for glCopyPixels(GL_STENCIL).

- */

-static void

-copy_stencil_pixels(struct gl_context *ctx, GLint srcx, GLint srcy,

-                    GLsizei width, GLsizei height,

-                    GLint dstx, GLint dsty)

-{

-   struct st_renderbuffer *rbDraw;

-   struct pipe_context *pipe = st_context(ctx)->pipe;

-   enum pipe_transfer_usage usage;

-   struct pipe_transfer *ptDraw;

-   ubyte *drawMap;

-   ubyte *buffer;

-   int i;

-

-   buffer = malloc(width * height * sizeof(ubyte));

-   if (!buffer) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels(stencil)");

-      return;

-   }

-

-   /* Get the dest renderbuffer.  If there's a wrapper, use the

-    * underlying renderbuffer.

-    */

-   rbDraw = st_renderbuffer(ctx->DrawBuffer->_StencilBuffer);

-   if (rbDraw->Base.Wrapped)

-      rbDraw = st_renderbuffer(rbDraw->Base.Wrapped);

-

-   /* this will do stencil pixel transfer ops */

-   st_read_stencil_pixels(ctx, srcx, srcy, width, height,

-                          GL_STENCIL_INDEX, GL_UNSIGNED_BYTE,

-                          &ctx->DefaultPacking, buffer);

-

-   if (0) {

-      /* debug code: dump stencil values */

-      GLint row, col;

-      for (row = 0; row < height; row++) {

-         printf("%3d: ", row);

-         for (col = 0; col < width; col++) {

-            printf("%02x ", buffer[col + row * width]);

-         }

-         printf("\n");

-      }

-   }

-

-   if (util_format_get_component_bits(rbDraw->format,

-                                     UTIL_FORMAT_COLORSPACE_ZS, 0) != 0)

-      usage = PIPE_TRANSFER_READ_WRITE;

-   else

-      usage = PIPE_TRANSFER_WRITE;

-

-   if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {

-      dsty = rbDraw->Base.Height - dsty - height;

-   }

-

-   ptDraw = pipe_get_transfer(st_context(ctx)->pipe,

-                              rbDraw->texture, 0, 0,

-                              usage, dstx, dsty,

-                              width, height);

-

-   assert(util_format_get_blockwidth(ptDraw->resource->format) == 1);

-   assert(util_format_get_blockheight(ptDraw->resource->format) == 1);

-

-   /* map the stencil buffer */

-   drawMap = pipe_transfer_map(pipe, ptDraw);

-

-   /* draw */

-   /* XXX PixelZoom not handled yet */

-   for (i = 0; i < height; i++) {

-      ubyte *dst;

-      const ubyte *src;

-      int y;

-

-      y = i;

-

-      if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {

-         y = height - y - 1;

-      }

-

-      dst = drawMap + y * ptDraw->stride;

-      src = buffer + i * width;

-

-      switch (ptDraw->resource->format) {

-      case PIPE_FORMAT_Z24_UNORM_S8_USCALED:

-         {

-            uint *dst4 = (uint *) dst;

-            int j;

-            assert(usage == PIPE_TRANSFER_READ_WRITE);

-            for (j = 0; j < width; j++) {

-               *dst4 = (*dst4 & 0xffffff) | (src[j] << 24);

-               dst4++;

-            }

-         }

-         break;

-      case PIPE_FORMAT_S8_USCALED_Z24_UNORM:

-         {

-            uint *dst4 = (uint *) dst;

-            int j;

-            assert(usage == PIPE_TRANSFER_READ_WRITE);

-            for (j = 0; j < width; j++) {

-               *dst4 = (*dst4 & 0xffffff00) | (src[j] & 0xff);

-               dst4++;

-            }

-         }

-         break;

-      case PIPE_FORMAT_S8_USCALED:

-         assert(usage == PIPE_TRANSFER_WRITE);

-         memcpy(dst, src, width);

-         break;

-      default:

-         assert(0);

-      }

-   }

-

-   free(buffer);

-

-   /* unmap the stencil buffer */

-   pipe_transfer_unmap(pipe, ptDraw);

-   pipe->transfer_destroy(pipe, ptDraw);

-}

-

-

-/** Do the src/dest regions overlap? */

-static GLboolean

-regions_overlap(GLint srcX, GLint srcY, GLint dstX, GLint dstY,

-                GLsizei width, GLsizei height)

-{

-   if (srcX + width <= dstX ||

-       dstX + width <= srcX ||

-       srcY + height <= dstY ||

-       dstY + height <= srcY)

-      return GL_FALSE;

-   else

-      return GL_TRUE;

-}

-

-

-/**

- * Try to do a glCopyPixels for simple cases with a blit by calling

- * pipe->resource_copy_region().

- *

- * We can do this when we're copying color pixels (depth/stencil

- * eventually) with no pixel zoom, no pixel transfer ops, no

- * per-fragment ops, the src/dest regions don't overlap and the

- * src/dest pixel formats are the same.

- */

-static GLboolean

-blit_copy_pixels(struct gl_context *ctx, GLint srcx, GLint srcy,

-                 GLsizei width, GLsizei height,

-                 GLint dstx, GLint dsty, GLenum type)

-{

-   struct st_context *st = st_context(ctx);

-   struct pipe_context *pipe = st->pipe;

-   struct gl_pixelstore_attrib pack, unpack;

-   GLint readX, readY, readW, readH;

-

-   if (type == GL_COLOR &&

-       ctx->Pixel.ZoomX == 1.0 &&

-       ctx->Pixel.ZoomY == 1.0 &&

-       ctx->_ImageTransferState == 0x0 &&

-       !ctx->Color.BlendEnabled &&

-       !ctx->Color.AlphaEnabled &&

-       !ctx->Depth.Test &&

-       !ctx->Fog.Enabled &&

-       !ctx->Stencil.Enabled &&

-       !ctx->FragmentProgram.Enabled &&

-       !ctx->VertexProgram.Enabled &&

-       !ctx->Shader.CurrentFragmentProgram &&

-       st_fb_orientation(ctx->ReadBuffer) == st_fb_orientation(ctx->DrawBuffer) &&

-       ctx->DrawBuffer->_NumColorDrawBuffers == 1) {

-      struct st_renderbuffer *rbRead, *rbDraw;

-      GLint drawX, drawY;

-

-      /*

-       * Clip the read region against the src buffer bounds.

-       * We'll still allocate a temporary buffer/texture for the original

-       * src region size but we'll only read the region which is on-screen.

-       * This may mean that we draw garbage pixels into the dest region, but

-       * that's expected.

-       */

-      readX = srcx;

-      readY = srcy;

-      readW = width;

-      readH = height;

-      pack = ctx->DefaultPacking;

-      if (!_mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack))

-         return GL_TRUE; /* all done */

-

-      /* clip against dest buffer bounds and scissor box */

-      drawX = dstx + pack.SkipPixels;

-      drawY = dsty + pack.SkipRows;

-      unpack = pack;

-      if (!_mesa_clip_drawpixels(ctx, &drawX, &drawY, &readW, &readH, &unpack))

-         return GL_TRUE; /* all done */

-

-      readX = readX - pack.SkipPixels + unpack.SkipPixels;

-      readY = readY - pack.SkipRows + unpack.SkipRows;

-

-      rbRead = st_get_color_read_renderbuffer(ctx);

-      rbDraw = st_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);

-

-      if ((rbRead != rbDraw ||

-           !regions_overlap(readX, readY, drawX, drawY, readW, readH)) &&

-          rbRead->Base.Format == rbDraw->Base.Format) {

-         struct pipe_box srcBox;

-

-         /* flip src/dst position if needed */

-         if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {

-            /* both buffers will have the same orientation */

-            readY = ctx->ReadBuffer->Height - readY - readH;

-            drawY = ctx->DrawBuffer->Height - drawY - readH;

-         }

-

-         u_box_2d(readX, readY, readW, readH, &srcBox);

-

-         pipe->resource_copy_region(pipe,

-                                    rbDraw->texture, 0, drawX, drawY, 0,

-                                    rbRead->texture, 0, &srcBox);

-         return GL_TRUE;

-      }

-   }

-

-   return GL_FALSE;

-}

-

-

-static void

-st_CopyPixels(struct gl_context *ctx, GLint srcx, GLint srcy,

-              GLsizei width, GLsizei height,

-              GLint dstx, GLint dsty, GLenum type)

-{

-   struct st_context *st = st_context(ctx);

-   struct pipe_context *pipe = st->pipe;

-   struct pipe_screen *screen = pipe->screen;

-   struct st_renderbuffer *rbRead;

-   void *driver_vp, *driver_fp;

-   struct pipe_resource *pt;

-   struct pipe_sampler_view *sv[2];

-   int num_sampler_view = 1;

-   GLfloat *color;

-   enum pipe_format srcFormat, texFormat;

-   GLboolean invertTex = GL_FALSE;

-   GLint readX, readY, readW, readH;

-   GLuint sample_count;

-   struct gl_pixelstore_attrib pack = ctx->DefaultPacking;

-   struct st_fp_variant *fpv;

-

-   st_validate_state(st);

-

-   if (type == GL_STENCIL) {

-      /* can't use texturing to do stencil */

-      copy_stencil_pixels(ctx, srcx, srcy, width, height, dstx, dsty);

-      return;

-   }

-

-   if (blit_copy_pixels(ctx, srcx, srcy, width, height, dstx, dsty, type))

-      return;

-

-   /*

-    * The subsequent code implements glCopyPixels by copying the source

-    * pixels into a temporary texture that's then applied to a textured quad.

-    * When we draw the textured quad, all the usual per-fragment operations

-    * are handled.

-    */

-

-

-   /*

-    * Get vertex/fragment shaders

-    */

-   if (type == GL_COLOR) {

-      rbRead = st_get_color_read_renderbuffer(ctx);

-      color = NULL;

-

-      fpv = get_color_fp_variant(st);

-      driver_fp = fpv->driver_shader;

-

-      driver_vp = make_passthrough_vertex_shader(st, GL_FALSE);

-

-      if (st->pixel_xfer.pixelmap_enabled) {

-	  sv[1] = st->pixel_xfer.pixelmap_sampler_view;

-	  num_sampler_view++;

-      }

-   }

-   else {

-      assert(type == GL_DEPTH);

-      rbRead = st_renderbuffer(ctx->ReadBuffer->_DepthBuffer);

-      color = ctx->Current.Attrib[VERT_ATTRIB_COLOR0];

-

-      fpv = get_depth_stencil_fp_variant(st, GL_TRUE, GL_FALSE);

-      driver_fp = fpv->driver_shader;

-

-      driver_vp = make_passthrough_vertex_shader(st, GL_TRUE);

-   }

-

-   /* update fragment program constants */

-   st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT);

-

-

-   if (rbRead->Base.Wrapped)

-      rbRead = st_renderbuffer(rbRead->Base.Wrapped);

-

-   sample_count = rbRead->texture->nr_samples;

-   /* I believe this would be legal, presumably would need to do a resolve

-      for color, and for depth/stencil spec says to just use one of the

-      depth/stencil samples per pixel? Need some transfer clarifications. */

-   assert(sample_count < 2);

-

-   srcFormat = rbRead->texture->format;

-

-   if (screen->is_format_supported(screen, srcFormat, st->internal_target,

-                                   sample_count,

-                                   PIPE_BIND_SAMPLER_VIEW, 0)) {

-      texFormat = srcFormat;

-   }

-   else {

-      /* srcFormat can't be used as a texture format */

-      if (type == GL_DEPTH) {

-         texFormat = st_choose_format(screen, GL_DEPTH_COMPONENT,

-                                      st->internal_target, sample_count,

-                                      PIPE_BIND_DEPTH_STENCIL);

-         assert(texFormat != PIPE_FORMAT_NONE);

-      }

-      else {

-         /* default color format */

-         texFormat = st_choose_format(screen, GL_RGBA, st->internal_target,

-                                      sample_count, PIPE_BIND_SAMPLER_VIEW);

-         assert(texFormat != PIPE_FORMAT_NONE);

-      }

-   }

-

-   /* Invert src region if needed */

-   if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {

-      srcy = ctx->ReadBuffer->Height - srcy - height;

-      invertTex = !invertTex;

-   }

-

-   /* Clip the read region against the src buffer bounds.

-    * We'll still allocate a temporary buffer/texture for the original

-    * src region size but we'll only read the region which is on-screen.

-    * This may mean that we draw garbage pixels into the dest region, but

-    * that's expected.

-    */

-   readX = srcx;

-   readY = srcy;

-   readW = width;

-   readH = height;

-   _mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack);

-   readW = MAX2(0, readW);

-   readH = MAX2(0, readH);

-

-   /* alloc temporary texture */

-   pt = alloc_texture(st, width, height, texFormat);

-   if (!pt)

-      return;

-

-   sv[0] = st_create_texture_sampler_view(st->pipe, pt);

-   if (!sv[0]) {

-      pipe_resource_reference(&pt, NULL);

-      return;

-   }

-

-   /* Make temporary texture which is a copy of the src region.

-    */

-   if (srcFormat == texFormat) {

-      struct pipe_box src_box;

-      u_box_2d(readX, readY, readW, readH, &src_box);

-      /* copy source framebuffer surface into mipmap/texture */

-      pipe->resource_copy_region(pipe,

-                                 pt,                                /* dest tex */

-                                 0,

-                                 pack.SkipPixels, pack.SkipRows, 0, /* dest pos */

-                                 rbRead->texture,                   /* src tex */

-                                 0,

-                                 &src_box);

-

-   }

-   else {

-      /* CPU-based fallback/conversion */

-      struct pipe_transfer *ptRead =

-         pipe_get_transfer(st->pipe, rbRead->texture,

-                           0, 0, /* level, layer */

-                           PIPE_TRANSFER_READ,

-                           readX, readY, readW, readH);

-      struct pipe_transfer *ptTex;

-      enum pipe_transfer_usage transfer_usage;

-

-      if (ST_DEBUG & DEBUG_FALLBACK)

-         debug_printf("%s: fallback processing\n", __FUNCTION__);

-

-      if (type == GL_DEPTH && util_format_is_depth_and_stencil(pt->format))

-         transfer_usage = PIPE_TRANSFER_READ_WRITE;

-      else

-         transfer_usage = PIPE_TRANSFER_WRITE;

-

-      ptTex = pipe_get_transfer(st->pipe, pt, 0, 0, transfer_usage,

-                                0, 0, width, height);

-

-      /* copy image from ptRead surface to ptTex surface */

-      if (type == GL_COLOR) {

-         /* alternate path using get/put_tile() */

-         GLfloat *buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));

-         enum pipe_format readFormat, drawFormat;

-         readFormat = util_format_linear(rbRead->texture->format);

-         drawFormat = util_format_linear(pt->format);

-         pipe_get_tile_rgba_format(pipe, ptRead, 0, 0, readW, readH,

-                                   readFormat, buf);

-         pipe_put_tile_rgba_format(pipe, ptTex, pack.SkipPixels, pack.SkipRows,

-                                   readW, readH, drawFormat, buf);

-         free(buf);

-      }

-      else {

-         /* GL_DEPTH */

-         GLuint *buf = (GLuint *) malloc(width * height * sizeof(GLuint));

-         pipe_get_tile_z(pipe, ptRead, 0, 0, readW, readH, buf);

-         pipe_put_tile_z(pipe, ptTex, pack.SkipPixels, pack.SkipRows,

-                         readW, readH, buf);

-         free(buf);

-      }

-

-      pipe->transfer_destroy(pipe, ptRead);

-      pipe->transfer_destroy(pipe, ptTex);

-   }

-

-   /* OK, the texture 'pt' contains the src image/pixels.  Now draw a

-    * textured quad with that texture.

-    */

-   draw_textured_quad(ctx, dstx, dsty, ctx->Current.RasterPos[2],

-                      width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,

-                      sv,

-                      num_sampler_view,

-                      driver_vp, 

-                      driver_fp,

-                      color, invertTex, GL_FALSE, GL_FALSE);

-

-   pipe_resource_reference(&pt, NULL);

-   pipe_sampler_view_reference(&sv[0], NULL);

-}

-

-

-

-void st_init_drawpixels_functions(struct dd_function_table *functions)

-{

-   functions->DrawPixels = st_DrawPixels;

-   functions->CopyPixels = st_CopyPixels;

-}

-

-

-void

-st_destroy_drawpix(struct st_context *st)

-{

-   GLuint i;

-

-   for (i = 0; i < Elements(st->drawpix.shaders); i++) {

-      if (st->drawpix.shaders[i])

-         _mesa_reference_fragprog(st->ctx, &st->drawpix.shaders[i], NULL);

-   }

-

-   st_reference_fragprog(st, &st->pixel_xfer.combined_prog, NULL);

-   if (st->drawpix.vert_shaders[0])

-      ureg_free_tokens(st->drawpix.vert_shaders[0]);

-   if (st->drawpix.vert_shaders[1])

-      ureg_free_tokens(st->drawpix.vert_shaders[1]);

-}

-

-#endif /* FEATURE_drawpix */

+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+ /*
+  * Authors:
+  *   Brian Paul
+  */
+
+#include "main/imports.h"
+#include "main/image.h"
+#include "main/bufferobj.h"
+#include "main/macros.h"
+#include "main/mfeatures.h"
+#include "main/mtypes.h"
+#include "main/pack.h"
+#include "main/pbo.h"
+#include "main/texformat.h"
+#include "main/texstore.h"
+#include "program/program.h"
+#include "program/prog_print.h"
+#include "program/prog_instruction.h"
+
+#include "st_atom.h"
+#include "st_atom_constbuf.h"
+#include "st_cb_drawpixels.h"
+#include "st_cb_readpixels.h"
+#include "st_cb_fbo.h"
+#include "st_context.h"
+#include "st_debug.h"
+#include "st_format.h"
+#include "st_program.h"
+#include "st_texture.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "tgsi/tgsi_ureg.h"
+#include "util/u_draw_quad.h"
+#include "util/u_format.h"
+#include "util/u_inlines.h"
+#include "util/u_math.h"
+#include "util/u_tile.h"
+#include "cso_cache/cso_context.h"
+
+
+#if FEATURE_drawpix
+
+/**
+ * Check if the given program is:
+ * 0: MOVE result.color, fragment.color;
+ * 1: END;
+ */
+static GLboolean
+is_passthrough_program(const struct gl_fragment_program *prog)
+{
+   if (prog->Base.NumInstructions == 2) {
+      const struct prog_instruction *inst = prog->Base.Instructions;
+      if (inst[0].Opcode == OPCODE_MOV &&
+          inst[1].Opcode == OPCODE_END &&
+          inst[0].DstReg.File == PROGRAM_OUTPUT &&
+          inst[0].DstReg.Index == FRAG_RESULT_COLOR &&
+          inst[0].DstReg.WriteMask == WRITEMASK_XYZW &&
+          inst[0].SrcReg[0].File == PROGRAM_INPUT &&
+          inst[0].SrcReg[0].Index == FRAG_ATTRIB_COL0 &&
+          inst[0].SrcReg[0].Swizzle == SWIZZLE_XYZW) {
+         return GL_TRUE;
+      }
+   }
+   return GL_FALSE;
+}
+
+
+
+/**
+ * Make fragment shader for glDraw/CopyPixels.  This shader is made
+ * by combining the pixel transfer shader with the user-defined shader.
+ * \param fpIn  the current/incoming fragment program
+ * \param fpOut  returns the combined fragment program
+ */
+void
+st_make_drawpix_fragment_program(struct st_context *st,
+                                 struct gl_fragment_program *fpIn,
+                                 struct gl_fragment_program **fpOut)
+{
+   struct gl_program *newProg;
+
+   if (is_passthrough_program(fpIn)) {
+      newProg = (struct gl_program *) _mesa_clone_fragment_program(st->ctx,
+                                             &st->pixel_xfer.program->Base);
+   }
+   else {
+#if 0
+      /* debug */
+      printf("Base program:\n");
+      _mesa_print_program(&fpIn->Base);
+      printf("DrawPix program:\n");
+      _mesa_print_program(&st->pixel_xfer.program->Base.Base);
+#endif
+      newProg = _mesa_combine_programs(st->ctx,
+                                       &st->pixel_xfer.program->Base.Base,
+                                       &fpIn->Base);
+   }
+
+#if 0
+   /* debug */
+   printf("Combined DrawPixels program:\n");
+   _mesa_print_program(newProg);
+   printf("InputsRead: 0x%x\n", newProg->InputsRead);
+   printf("OutputsWritten: 0x%x\n", newProg->OutputsWritten);
+   _mesa_print_parameter_list(newProg->Parameters);
+#endif
+
+   *fpOut = (struct gl_fragment_program *) newProg;
+}
+
+
+/**
+ * Create fragment program that does a TEX() instruction to get a Z and/or
+ * stencil value value, then writes to FRAG_RESULT_DEPTH/FRAG_RESULT_STENCIL.
+ * Used for glDrawPixels(GL_DEPTH_COMPONENT / GL_STENCIL_INDEX).
+ * Pass fragment color through as-is.
+ * \return pointer to the gl_fragment program
+ */
+struct gl_fragment_program *
+st_make_drawpix_z_stencil_program(struct st_context *st,
+                                  GLboolean write_depth,
+                                  GLboolean write_stencil)
+{
+   struct gl_context *ctx = st->ctx;
+   struct gl_program *p;
+   struct gl_fragment_program *fp;
+   GLuint ic = 0;
+   const GLuint shaderIndex = write_depth * 2 + write_stencil;
+
+   assert(shaderIndex < Elements(st->drawpix.shaders));
+
+   if (st->drawpix.shaders[shaderIndex]) {
+      /* already have the proper shader */
+      return st->drawpix.shaders[shaderIndex];
+   }
+
+   /*
+    * Create shader now
+    */
+   p = ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
+   if (!p)
+      return NULL;
+
+   p->NumInstructions = write_depth ? 2 : 1;
+   p->NumInstructions += write_stencil ? 1 : 0;
+
+   p->Instructions = _mesa_alloc_instructions(p->NumInstructions);
+   if (!p->Instructions) {
+      ctx->Driver.DeleteProgram(ctx, p);
+      return NULL;
+   }
+   _mesa_init_instructions(p->Instructions, p->NumInstructions);
+
+   if (write_depth) {
+      /* TEX result.depth, fragment.texcoord[0], texture[0], 2D; */
+      p->Instructions[ic].Opcode = OPCODE_TEX;
+      p->Instructions[ic].DstReg.File = PROGRAM_OUTPUT;
+      p->Instructions[ic].DstReg.Index = FRAG_RESULT_DEPTH;
+      p->Instructions[ic].DstReg.WriteMask = WRITEMASK_Z;
+      p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT;
+      p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0;
+      p->Instructions[ic].TexSrcUnit = 0;
+      p->Instructions[ic].TexSrcTarget = TEXTURE_2D_INDEX;
+      ic++;
+   }
+
+   if (write_stencil) {
+      /* TEX result.stencil, fragment.texcoord[0], texture[0], 2D; */
+      p->Instructions[ic].Opcode = OPCODE_TEX;
+      p->Instructions[ic].DstReg.File = PROGRAM_OUTPUT;
+      p->Instructions[ic].DstReg.Index = FRAG_RESULT_STENCIL;
+      p->Instructions[ic].DstReg.WriteMask = WRITEMASK_Y;
+      p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT;
+      p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0;
+      p->Instructions[ic].TexSrcUnit = 1;
+      p->Instructions[ic].TexSrcTarget = TEXTURE_2D_INDEX;
+      ic++;
+   }
+
+   /* END; */
+   p->Instructions[ic++].Opcode = OPCODE_END;
+
+   assert(ic == p->NumInstructions);
+
+   p->InputsRead = FRAG_BIT_TEX0 | FRAG_BIT_COL0;
+   p->OutputsWritten = 0;
+   if (write_depth)
+      p->OutputsWritten |= (1 << FRAG_RESULT_DEPTH);
+   if (write_stencil)
+      p->OutputsWritten |= (1 << FRAG_RESULT_STENCIL);
+
+   p->SamplersUsed =  0x1;  /* sampler 0 (bit 0) is used */
+   if (write_stencil)
+      p->SamplersUsed |= 1 << 1;
+
+   fp = (struct gl_fragment_program *) p;
+
+   /* save the new shader */
+   st->drawpix.shaders[shaderIndex] = fp;
+
+   return fp;
+}
+
+
+/**
+ * Create a simple vertex shader that just passes through the
+ * vertex position and texcoord (and optionally, color).
+ */
+static void *
+make_passthrough_vertex_shader(struct st_context *st, 
+                               GLboolean passColor)
+{
+   if (!st->drawpix.vert_shaders[passColor]) {
+      struct ureg_program *ureg = ureg_create( TGSI_PROCESSOR_VERTEX );
+
+      if (ureg == NULL)
+         return NULL;
+
+      /* MOV result.pos, vertex.pos; */
+      ureg_MOV(ureg, 
+               ureg_DECL_output( ureg, TGSI_SEMANTIC_POSITION, 0 ),
+               ureg_DECL_vs_input( ureg, 0 ));
+      
+      /* MOV result.texcoord0, vertex.attr[1]; */
+      ureg_MOV(ureg, 
+               ureg_DECL_output( ureg, TGSI_SEMANTIC_GENERIC, 0 ),
+               ureg_DECL_vs_input( ureg, 1 ));
+      
+      if (passColor) {
+         /* MOV result.color0, vertex.attr[2]; */
+         ureg_MOV(ureg, 
+                  ureg_DECL_output( ureg, TGSI_SEMANTIC_COLOR, 0 ),
+                  ureg_DECL_vs_input( ureg, 2 ));
+      }
+
+      ureg_END( ureg );
+      
+      st->drawpix.vert_shaders[passColor] = 
+         ureg_create_shader_and_destroy( ureg, st->pipe );
+   }
+
+   return st->drawpix.vert_shaders[passColor];
+}
+
+
+/**
+ * Return a texture base format for drawing/copying an image
+ * of the given format.
+ */
+static GLenum
+base_format(GLenum format)
+{
+   switch (format) {
+   case GL_DEPTH_COMPONENT:
+      return GL_DEPTH_COMPONENT;
+   case GL_DEPTH_STENCIL:
+      return GL_DEPTH_STENCIL;
+   case GL_STENCIL_INDEX:
+      return GL_STENCIL_INDEX;
+   default:
+      return GL_RGBA;
+   }
+}
+
+
+/**
+ * Return a texture internalFormat for drawing/copying an image
+ * of the given format and type.
+ */
+static GLenum
+internal_format(GLenum format, GLenum type)
+{
+   switch (format) {
+   case GL_DEPTH_COMPONENT:
+      return GL_DEPTH_COMPONENT;
+   case GL_DEPTH_STENCIL:
+      return GL_DEPTH_STENCIL;
+   case GL_STENCIL_INDEX:
+      return GL_STENCIL_INDEX;
+   default:
+      if (_mesa_is_integer_format(format)) {
+         switch (type) {
+         case GL_BYTE:
+            return GL_RGBA8I;
+         case GL_UNSIGNED_BYTE:
+            return GL_RGBA8UI;
+         case GL_SHORT:
+            return GL_RGBA16I;
+         case GL_UNSIGNED_SHORT:
+            return GL_RGBA16UI;
+         case GL_INT:
+            return GL_RGBA32I;
+         case GL_UNSIGNED_INT:
+            return GL_RGBA32UI;
+         default:
+            assert(0 && "Unexpected type in internal_format()");
+            return GL_RGBA_INTEGER;
+         }
+      }
+      else {
+         return GL_RGBA;
+      }
+   }
+}
+
+
+/**
+ * Create a temporary texture to hold an image of the given size.
+ * If width, height are not POT and the driver only handles POT textures,
+ * allocate the next larger size of texture that is POT.
+ */
+static struct pipe_resource *
+alloc_texture(struct st_context *st, GLsizei width, GLsizei height,
+              enum pipe_format texFormat)
+{
+   struct pipe_resource *pt;
+
+   pt = st_texture_create(st, st->internal_target, texFormat, 0,
+                          width, height, 1, 1, PIPE_BIND_SAMPLER_VIEW);
+
+   return pt;
+}
+
+
+/**
+ * Make texture containing an image for glDrawPixels image.
+ * If 'pixels' is NULL, leave the texture image data undefined.
+ */
+static struct pipe_resource *
+make_texture(struct st_context *st,
+	     GLsizei width, GLsizei height, GLenum format, GLenum type,
+	     const struct gl_pixelstore_attrib *unpack,
+	     const GLvoid *pixels)
+{
+   struct gl_context *ctx = st->ctx;
+   struct pipe_context *pipe = st->pipe;
+   gl_format mformat;
+   struct pipe_resource *pt;
+   enum pipe_format pipeFormat;
+   GLuint cpp;
+   GLenum baseFormat, intFormat;
+
+   baseFormat = base_format(format);
+   intFormat = internal_format(format, type);
+
+   mformat = st_ChooseTextureFormat_renderable(ctx, intFormat,
+                                               format, type, GL_FALSE);
+   assert(mformat);
+
+   pipeFormat = st_mesa_format_to_pipe_format(mformat);
+   assert(pipeFormat);
+   cpp = util_format_get_blocksize(pipeFormat);
+
+   pixels = _mesa_map_pbo_source(ctx, unpack, pixels);
+   if (!pixels)
+      return NULL;
+
+   /* alloc temporary texture */
+   pt = alloc_texture(st, width, height, pipeFormat);
+   if (!pt) {
+      _mesa_unmap_pbo_source(ctx, unpack);
+      return NULL;
+   }
+
+   {
+      struct pipe_transfer *transfer;
+      static const GLuint dstImageOffsets = 0;
+      GLboolean success;
+      GLubyte *dest;
+      const GLbitfield imageTransferStateSave = ctx->_ImageTransferState;
+
+      /* we'll do pixel transfer in a fragment shader */
+      ctx->_ImageTransferState = 0x0;
+
+      transfer = pipe_get_transfer(st->pipe, pt, 0, 0,
+                                   PIPE_TRANSFER_WRITE, 0, 0,
+                                   width, height);
+
+      /* map texture transfer */
+      dest = pipe_transfer_map(pipe, transfer);
+
+
+      /* Put image into texture transfer.
+       * Note that the image is actually going to be upside down in
+       * the texture.  We deal with that with texcoords.
+       */
+      success = _mesa_texstore(ctx, 2,           /* dims */
+                               baseFormat,       /* baseInternalFormat */
+                               mformat,          /* gl_format */
+                               dest,             /* dest */
+                               0, 0, 0,          /* dstX/Y/Zoffset */
+                               transfer->stride, /* dstRowStride, bytes */
+                               &dstImageOffsets, /* dstImageOffsets */
+                               width, height, 1, /* size */
+                               format, type,     /* src format/type */
+                               pixels,           /* data source */
+                               unpack);
+
+      /* unmap */
+      pipe_transfer_unmap(pipe, transfer);
+      pipe->transfer_destroy(pipe, transfer);
+
+      assert(success);
+
+      /* restore */
+      ctx->_ImageTransferState = imageTransferStateSave;
+   }
+
+   _mesa_unmap_pbo_source(ctx, unpack);
+
+   return pt;
+}
+
+
+/**
+ * Draw quad with texcoords and optional color.
+ * Coords are gallium window coords with y=0=top.
+ * \param color  may be null
+ * \param invertTex  if true, flip texcoords vertically
+ */
+static void
+draw_quad(struct gl_context *ctx, GLfloat x0, GLfloat y0, GLfloat z,
+          GLfloat x1, GLfloat y1, const GLfloat *color,
+          GLboolean invertTex, GLfloat maxXcoord, GLfloat maxYcoord)
+{
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
+   GLfloat verts[4][3][4]; /* four verts, three attribs, XYZW */
+
+   /* setup vertex data */
+   {
+      const struct gl_framebuffer *fb = st->ctx->DrawBuffer;
+      const GLfloat fb_width = (GLfloat) fb->Width;
+      const GLfloat fb_height = (GLfloat) fb->Height;
+      const GLfloat clip_x0 = x0 / fb_width * 2.0f - 1.0f;
+      const GLfloat clip_y0 = y0 / fb_height * 2.0f - 1.0f;
+      const GLfloat clip_x1 = x1 / fb_width * 2.0f - 1.0f;
+      const GLfloat clip_y1 = y1 / fb_height * 2.0f - 1.0f;
+      const GLfloat sLeft = 0.0f, sRight = maxXcoord;
+      const GLfloat tTop = invertTex ? maxYcoord : 0.0f;
+      const GLfloat tBot = invertTex ? 0.0f : maxYcoord;
+      GLuint i;
+
+      /* upper-left */
+      verts[0][0][0] = clip_x0;    /* v[0].attr[0].x */
+      verts[0][0][1] = clip_y0;    /* v[0].attr[0].y */
+
+      /* upper-right */
+      verts[1][0][0] = clip_x1;
+      verts[1][0][1] = clip_y0;
+
+      /* lower-right */
+      verts[2][0][0] = clip_x1;
+      verts[2][0][1] = clip_y1;
+
+      /* lower-left */
+      verts[3][0][0] = clip_x0;
+      verts[3][0][1] = clip_y1;
+
+      verts[0][1][0] = sLeft; /* v[0].attr[1].S */
+      verts[0][1][1] = tTop;  /* v[0].attr[1].T */
+      verts[1][1][0] = sRight;
+      verts[1][1][1] = tTop;
+      verts[2][1][0] = sRight;
+      verts[2][1][1] = tBot;
+      verts[3][1][0] = sLeft;
+      verts[3][1][1] = tBot;
+
+      /* same for all verts: */
+      if (color) {
+         for (i = 0; i < 4; i++) {
+            verts[i][0][2] = z;         /* v[i].attr[0].z */
+            verts[i][0][3] = 1.0f;      /* v[i].attr[0].w */
+            verts[i][2][0] = color[0];  /* v[i].attr[2].r */
+            verts[i][2][1] = color[1];  /* v[i].attr[2].g */
+            verts[i][2][2] = color[2];  /* v[i].attr[2].b */
+            verts[i][2][3] = color[3];  /* v[i].attr[2].a */
+            verts[i][1][2] = 0.0f;      /* v[i].attr[1].R */
+            verts[i][1][3] = 1.0f;      /* v[i].attr[1].Q */
+         }
+      }
+      else {
+         for (i = 0; i < 4; i++) {
+            verts[i][0][2] = z;    /*Z*/
+            verts[i][0][3] = 1.0f; /*W*/
+            verts[i][1][2] = 0.0f; /*R*/
+            verts[i][1][3] = 1.0f; /*Q*/
+         }
+      }
+   }
+
+   {
+      struct pipe_resource *buf;
+
+      /* allocate/load buffer object with vertex data */
+      buf = pipe_buffer_create(pipe->screen,
+			       PIPE_BIND_VERTEX_BUFFER,
+			       PIPE_USAGE_STATIC,
+                               sizeof(verts));
+      pipe_buffer_write(st->pipe, buf, 0, sizeof(verts), verts);
+
+      util_draw_vertex_buffer(pipe, st->cso_context, buf, 0,
+                              PIPE_PRIM_QUADS,
+                              4,  /* verts */
+                              3); /* attribs/vert */
+      pipe_resource_reference(&buf, NULL);
+   }
+}
+
+
+
+static void
+draw_textured_quad(struct gl_context *ctx, GLint x, GLint y, GLfloat z,
+                   GLsizei width, GLsizei height,
+                   GLfloat zoomX, GLfloat zoomY,
+                   struct pipe_sampler_view **sv,
+                   int num_sampler_view,
+                   void *driver_vp,
+                   void *driver_fp,
+                   const GLfloat *color,
+                   GLboolean invertTex,
+                   GLboolean write_depth, GLboolean write_stencil)
+{
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
+   struct cso_context *cso = st->cso_context;
+   GLfloat x0, y0, x1, y1;
+   GLsizei maxSize;
+   boolean normalized = sv[0]->texture->target != PIPE_TEXTURE_RECT;
+
+   /* limit checks */
+   /* XXX if DrawPixels image is larger than max texture size, break
+    * it up into chunks.
+    */
+   maxSize = 1 << (pipe->screen->get_param(pipe->screen,
+                                        PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1);
+   assert(width <= maxSize);
+   assert(height <= maxSize);
+
+   cso_save_rasterizer(cso);
+   cso_save_viewport(cso);
+   cso_save_samplers(cso);
+   cso_save_fragment_sampler_views(cso);
+   cso_save_fragment_shader(cso);
+   cso_save_vertex_shader(cso);
+   cso_save_vertex_elements(cso);
+   cso_save_vertex_buffers(cso);
+   if (write_stencil) {
+      cso_save_depth_stencil_alpha(cso);
+      cso_save_blend(cso);
+   }
+
+   /* rasterizer state: just scissor */
+   {
+      struct pipe_rasterizer_state rasterizer;
+      memset(&rasterizer, 0, sizeof(rasterizer));
+      rasterizer.gl_rasterization_rules = 1;
+      rasterizer.scissor = ctx->Scissor.Enabled;
+      cso_set_rasterizer(cso, &rasterizer);
+   }
+
+   if (write_stencil) {
+      /* Stencil writing bypasses the normal fragment pipeline to
+       * disable color writing and set stencil test to always pass.
+       */
+      struct pipe_depth_stencil_alpha_state dsa;
+      struct pipe_blend_state blend;
+
+      /* depth/stencil */
+      memset(&dsa, 0, sizeof(dsa));
+      dsa.stencil[0].enabled = 1;
+      dsa.stencil[0].func = PIPE_FUNC_ALWAYS;
+      dsa.stencil[0].writemask = ctx->Stencil.WriteMask[0] & 0xff;
+      dsa.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE;
+      if (write_depth) {
+         /* writing depth+stencil: depth test always passes */
+         dsa.depth.enabled = 1;
+         dsa.depth.writemask = ctx->Depth.Mask;
+         dsa.depth.func = PIPE_FUNC_ALWAYS;
+      }
+      cso_set_depth_stencil_alpha(cso, &dsa);
+
+      /* blend (colormask) */
+      memset(&blend, 0, sizeof(blend));
+      cso_set_blend(cso, &blend);
+   }
+
+   /* fragment shader state: TEX lookup program */
+   cso_set_fragment_shader_handle(cso, driver_fp);
+
+   /* vertex shader state: position + texcoord pass-through */
+   cso_set_vertex_shader_handle(cso, driver_vp);
+
+
+   /* texture sampling state: */
+   {
+      struct pipe_sampler_state sampler;
+      memset(&sampler, 0, sizeof(sampler));
+      sampler.wrap_s = PIPE_TEX_WRAP_CLAMP;
+      sampler.wrap_t = PIPE_TEX_WRAP_CLAMP;
+      sampler.wrap_r = PIPE_TEX_WRAP_CLAMP;
+      sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
+      sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
+      sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
+      sampler.normalized_coords = normalized;
+
+      cso_single_sampler(cso, 0, &sampler);
+      if (num_sampler_view > 1) {
+         cso_single_sampler(cso, 1, &sampler);
+      }
+      cso_single_sampler_done(cso);
+   }
+
+   /* viewport state: viewport matching window dims */
+   {
+      const float w = (float) ctx->DrawBuffer->Width;
+      const float h = (float) ctx->DrawBuffer->Height;
+      struct pipe_viewport_state vp;
+      vp.scale[0] =  0.5f * w;
+      vp.scale[1] = -0.5f * h;
+      vp.scale[2] = 0.5f;
+      vp.scale[3] = 1.0f;
+      vp.translate[0] = 0.5f * w;
+      vp.translate[1] = 0.5f * h;
+      vp.translate[2] = 0.5f;
+      vp.translate[3] = 0.0f;
+      cso_set_viewport(cso, &vp);
+   }
+
+   cso_set_vertex_elements(cso, 3, st->velems_util_draw);
+
+   /* texture state: */
+   cso_set_fragment_sampler_views(cso, num_sampler_view, sv);
+
+   /* Compute Gallium window coords (y=0=top) with pixel zoom.
+    * Recall that these coords are transformed by the current
+    * vertex shader and viewport transformation.
+    */
+   if (st_fb_orientation(ctx->DrawBuffer) == Y_0_BOTTOM) {
+      y = ctx->DrawBuffer->Height - (int) (y + height * ctx->Pixel.ZoomY);
+      invertTex = !invertTex;
+   }
+
+   x0 = (GLfloat) x;
+   x1 = x + width * ctx->Pixel.ZoomX;
+   y0 = (GLfloat) y;
+   y1 = y + height * ctx->Pixel.ZoomY;
+
+   /* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */
+   z = z * 2.0 - 1.0;
+
+   draw_quad(ctx, x0, y0, z, x1, y1, color, invertTex,
+             normalized ? ((GLfloat) width / sv[0]->texture->width0) : (GLfloat)width,
+             normalized ? ((GLfloat) height / sv[0]->texture->height0) : (GLfloat)height);
+
+   /* restore state */
+   cso_restore_rasterizer(cso);
+   cso_restore_viewport(cso);
+   cso_restore_samplers(cso);
+   cso_restore_fragment_sampler_views(cso);
+   cso_restore_fragment_shader(cso);
+   cso_restore_vertex_shader(cso);
+   cso_restore_vertex_elements(cso);
+   cso_restore_vertex_buffers(cso);
+   if (write_stencil) {
+      cso_restore_depth_stencil_alpha(cso);
+      cso_restore_blend(cso);
+   }
+}
+
+
+/**
+ * Software fallback to do glDrawPixels(GL_STENCIL_INDEX) when we
+ * can't use a fragment shader to write stencil values.
+ */
+static void
+draw_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
+                    GLsizei width, GLsizei height, GLenum format, GLenum type,
+                    const struct gl_pixelstore_attrib *unpack,
+                    const GLvoid *pixels)
+{
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
+   struct st_renderbuffer *strb;
+   enum pipe_transfer_usage usage;
+   struct pipe_transfer *pt;
+   const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
+   GLint skipPixels;
+   ubyte *stmap;
+   struct gl_pixelstore_attrib clippedUnpack = *unpack;
+
+   if (!zoom) {
+      if (!_mesa_clip_drawpixels(ctx, &x, &y, &width, &height,
+                                 &clippedUnpack)) {
+         /* totally clipped */
+         return;
+      }
+   }
+
+   strb = st_renderbuffer(ctx->DrawBuffer->
+                          Attachment[BUFFER_STENCIL].Renderbuffer);
+
+   if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
+      y = ctx->DrawBuffer->Height - y - height;
+   }
+
+   if(format != GL_DEPTH_STENCIL && 
+      util_format_get_component_bits(strb->format,
+                                     UTIL_FORMAT_COLORSPACE_ZS, 0) != 0)
+      usage = PIPE_TRANSFER_READ_WRITE;
+   else
+      usage = PIPE_TRANSFER_WRITE;
+
+   pt = pipe_get_transfer(st_context(ctx)->pipe, strb->texture, 0, 0,
+                                     usage, x, y,
+                                     width, height);
+
+   stmap = pipe_transfer_map(pipe, pt);
+
+   pixels = _mesa_map_pbo_source(ctx, &clippedUnpack, pixels);
+   assert(pixels);
+
+   /* if width > MAX_WIDTH, have to process image in chunks */
+   skipPixels = 0;
+   while (skipPixels < width) {
+      const GLint spanX = skipPixels;
+      const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);
+      GLint row;
+      for (row = 0; row < height; row++) {
+         GLubyte sValues[MAX_WIDTH];
+         GLuint zValues[MAX_WIDTH];
+         GLenum destType = GL_UNSIGNED_BYTE;
+         const GLvoid *source = _mesa_image_address2d(&clippedUnpack, pixels,
+                                                      width, height,
+                                                      format, type,
+                                                      row, skipPixels);
+         _mesa_unpack_stencil_span(ctx, spanWidth, destType, sValues,
+                                   type, source, &clippedUnpack,
+                                   ctx->_ImageTransferState);
+
+         if (format == GL_DEPTH_STENCIL) {
+            _mesa_unpack_depth_span(ctx, spanWidth, GL_UNSIGNED_INT, zValues,
+                                    (1 << 24) - 1, type, source,
+                                    &clippedUnpack);
+         }
+
+         if (zoom) {
+            _mesa_problem(ctx, "Gallium glDrawPixels(GL_STENCIL) with "
+                          "zoom not complete");
+         }
+
+         {
+            GLint spanY;
+
+            if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
+               spanY = height - row - 1;
+            }
+            else {
+               spanY = row;
+            }
+
+            /* now pack the stencil (and Z) values in the dest format */
+            switch (pt->resource->format) {
+            case PIPE_FORMAT_S8_USCALED:
+               {
+                  ubyte *dest = stmap + spanY * pt->stride + spanX;
+                  assert(usage == PIPE_TRANSFER_WRITE);
+                  memcpy(dest, sValues, spanWidth);
+               }
+               break;
+            case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
+               if (format == GL_DEPTH_STENCIL) {
+                  uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
+                  GLint k;
+                  assert(usage == PIPE_TRANSFER_WRITE);
+                  for (k = 0; k < spanWidth; k++) {
+                     dest[k] = zValues[k] | (sValues[k] << 24);
+                  }
+               }
+               else {
+                  uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
+                  GLint k;
+                  assert(usage == PIPE_TRANSFER_READ_WRITE);
+                  for (k = 0; k < spanWidth; k++) {
+                     dest[k] = (dest[k] & 0xffffff) | (sValues[k] << 24);
+                  }
+               }
+               break;
+            case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
+               if (format == GL_DEPTH_STENCIL) {
+                  uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
+                  GLint k;
+                  assert(usage == PIPE_TRANSFER_WRITE);
+                  for (k = 0; k < spanWidth; k++) {
+                     dest[k] = (zValues[k] << 8) | (sValues[k] & 0xff);
+                  }
+               }
+               else {
+                  uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
+                  GLint k;
+                  assert(usage == PIPE_TRANSFER_READ_WRITE);
+                  for (k = 0; k < spanWidth; k++) {
+                     dest[k] = (dest[k] & 0xffffff00) | (sValues[k] & 0xff);
+                  }
+               }
+               break;
+            default:
+               assert(0);
+            }
+         }
+      }
+      skipPixels += spanWidth;
+   }
+
+   _mesa_unmap_pbo_source(ctx, &clippedUnpack);
+
+   /* unmap the stencil buffer */
+   pipe_transfer_unmap(pipe, pt);
+   pipe->transfer_destroy(pipe, pt);
+}
+
+
+/**
+ * Get fragment program variant for a glDrawPixels or glCopyPixels
+ * command for RGBA data.
+ */
+static struct st_fp_variant *
+get_color_fp_variant(struct st_context *st)
+{
+   struct gl_context *ctx = st->ctx;
+   struct st_fp_variant_key key;
+   struct st_fp_variant *fpv;
+
+   memset(&key, 0, sizeof(key));
+
+   key.st = st;
+   key.drawpixels = 1;
+   key.scaleAndBias = (ctx->Pixel.RedBias != 0.0 ||
+                       ctx->Pixel.RedScale != 1.0 ||
+                       ctx->Pixel.GreenBias != 0.0 ||
+                       ctx->Pixel.GreenScale != 1.0 ||
+                       ctx->Pixel.BlueBias != 0.0 ||
+                       ctx->Pixel.BlueScale != 1.0 ||
+                       ctx->Pixel.AlphaBias != 0.0 ||
+                       ctx->Pixel.AlphaScale != 1.0);
+   key.pixelMaps = ctx->Pixel.MapColorFlag;
+
+   fpv = st_get_fp_variant(st, st->fp, &key);
+
+   return fpv;
+}
+
+
+/**
+ * Get fragment program variant for a glDrawPixels or glCopyPixels
+ * command for depth/stencil data.
+ */
+static struct st_fp_variant *
+get_depth_stencil_fp_variant(struct st_context *st, GLboolean write_depth,
+                             GLboolean write_stencil)
+{
+   struct st_fp_variant_key key;
+   struct st_fp_variant *fpv;
+
+   memset(&key, 0, sizeof(key));
+
+   key.st = st;
+   key.drawpixels = 1;
+   key.drawpixels_z = write_depth;
+   key.drawpixels_stencil = write_stencil;
+
+   fpv = st_get_fp_variant(st, st->fp, &key);
+
+   return fpv;
+}
+
+
+/**
+ * Called via ctx->Driver.DrawPixels()
+ */
+static void
+st_DrawPixels(struct gl_context *ctx, GLint x, GLint y,
+              GLsizei width, GLsizei height,
+              GLenum format, GLenum type,
+              const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)
+{
+   void *driver_vp, *driver_fp;
+   struct st_context *st = st_context(ctx);
+   const GLfloat *color;
+   struct pipe_context *pipe = st->pipe;
+   GLboolean write_stencil = GL_FALSE, write_depth = GL_FALSE;
+   struct pipe_sampler_view *sv[2];
+   int num_sampler_view = 1;
+   enum pipe_format stencil_format = PIPE_FORMAT_NONE;
+   struct st_fp_variant *fpv;
+
+   if (format == GL_DEPTH_STENCIL)
+      write_stencil = write_depth = GL_TRUE;
+   else if (format == GL_STENCIL_INDEX)
+      write_stencil = GL_TRUE;
+   else if (format == GL_DEPTH_COMPONENT)
+      write_depth = GL_TRUE;
+
+   if (write_stencil) {
+      enum pipe_format tex_format;
+      /* can we write to stencil if not fallback */
+      if (!pipe->screen->get_param(pipe->screen, PIPE_CAP_SHADER_STENCIL_EXPORT))
+	 goto stencil_fallback;
+      
+      tex_format = st_choose_format(st->pipe->screen, base_format(format),
+                                    PIPE_TEXTURE_2D,
+				    0, PIPE_BIND_SAMPLER_VIEW);
+      if (tex_format == PIPE_FORMAT_Z24_UNORM_S8_USCALED)
+	 stencil_format = PIPE_FORMAT_X24S8_USCALED;
+      else if (tex_format == PIPE_FORMAT_S8_USCALED_Z24_UNORM)
+	 stencil_format = PIPE_FORMAT_S8X24_USCALED;
+      else
+	 stencil_format = PIPE_FORMAT_S8_USCALED;
+      if (stencil_format == PIPE_FORMAT_NONE)
+	 goto stencil_fallback;
+   }
+
+   /* Mesa state should be up to date by now */
+   assert(ctx->NewState == 0x0);
+
+   st_validate_state(st);
+
+   /*
+    * Get vertex/fragment shaders
+    */
+   if (write_depth || write_stencil) {
+      fpv = get_depth_stencil_fp_variant(st, write_depth, write_stencil);
+
+      driver_fp = fpv->driver_shader;
+
+      driver_vp = make_passthrough_vertex_shader(st, GL_TRUE);
+
+      color = ctx->Current.RasterColor;
+   }
+   else {
+      fpv = get_color_fp_variant(st);
+
+      driver_fp = fpv->driver_shader;
+
+      driver_vp = make_passthrough_vertex_shader(st, GL_FALSE);
+
+      color = NULL;
+      if (st->pixel_xfer.pixelmap_enabled) {
+	  sv[1] = st->pixel_xfer.pixelmap_sampler_view;
+	  num_sampler_view++;
+      }
+   }
+
+   /* update fragment program constants */
+   st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT);
+
+   /* draw with textured quad */
+   {
+      struct pipe_resource *pt
+         = make_texture(st, width, height, format, type, unpack, pixels);
+      if (pt) {
+         sv[0] = st_create_texture_sampler_view(st->pipe, pt);
+
+         if (sv[0]) {
+	    if (write_stencil) {
+	       sv[1] = st_create_texture_sampler_view_format(st->pipe, pt,
+                                                             stencil_format);
+	       num_sampler_view++;
+	    }
+
+            draw_textured_quad(ctx, x, y, ctx->Current.RasterPos[2],
+                               width, height,
+                               ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
+                               sv,
+                               num_sampler_view,
+                               driver_vp,
+                               driver_fp,
+                               color, GL_FALSE, write_depth, write_stencil);
+            pipe_sampler_view_reference(&sv[0], NULL);
+            if (num_sampler_view > 1)
+               pipe_sampler_view_reference(&sv[1], NULL);
+         }
+         pipe_resource_reference(&pt, NULL);
+      }
+   }
+   return;
+
+stencil_fallback:
+   draw_stencil_pixels(ctx, x, y, width, height, format, type,
+		       unpack, pixels);
+}
+
+
+
+/**
+ * Software fallback for glCopyPixels(GL_STENCIL).
+ */
+static void
+copy_stencil_pixels(struct gl_context *ctx, GLint srcx, GLint srcy,
+                    GLsizei width, GLsizei height,
+                    GLint dstx, GLint dsty)
+{
+   struct st_renderbuffer *rbDraw;
+   struct pipe_context *pipe = st_context(ctx)->pipe;
+   enum pipe_transfer_usage usage;
+   struct pipe_transfer *ptDraw;
+   ubyte *drawMap;
+   ubyte *buffer;
+   int i;
+
+   buffer = malloc(width * height * sizeof(ubyte));
+   if (!buffer) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels(stencil)");
+      return;
+   }
+
+   /* Get the dest renderbuffer.  If there's a wrapper, use the
+    * underlying renderbuffer.
+    */
+   rbDraw = st_renderbuffer(ctx->DrawBuffer->_StencilBuffer);
+   if (rbDraw->Base.Wrapped)
+      rbDraw = st_renderbuffer(rbDraw->Base.Wrapped);
+
+   /* this will do stencil pixel transfer ops */
+   st_read_stencil_pixels(ctx, srcx, srcy, width, height,
+                          GL_STENCIL_INDEX, GL_UNSIGNED_BYTE,
+                          &ctx->DefaultPacking, buffer);
+
+   if (0) {
+      /* debug code: dump stencil values */
+      GLint row, col;
+      for (row = 0; row < height; row++) {
+         printf("%3d: ", row);
+         for (col = 0; col < width; col++) {
+            printf("%02x ", buffer[col + row * width]);
+         }
+         printf("\n");
+      }
+   }
+
+   if (util_format_get_component_bits(rbDraw->format,
+                                     UTIL_FORMAT_COLORSPACE_ZS, 0) != 0)
+      usage = PIPE_TRANSFER_READ_WRITE;
+   else
+      usage = PIPE_TRANSFER_WRITE;
+
+   if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
+      dsty = rbDraw->Base.Height - dsty - height;
+   }
+
+   ptDraw = pipe_get_transfer(st_context(ctx)->pipe,
+                              rbDraw->texture, 0, 0,
+                              usage, dstx, dsty,
+                              width, height);
+
+   assert(util_format_get_blockwidth(ptDraw->resource->format) == 1);
+   assert(util_format_get_blockheight(ptDraw->resource->format) == 1);
+
+   /* map the stencil buffer */
+   drawMap = pipe_transfer_map(pipe, ptDraw);
+
+   /* draw */
+   /* XXX PixelZoom not handled yet */
+   for (i = 0; i < height; i++) {
+      ubyte *dst;
+      const ubyte *src;
+      int y;
+
+      y = i;
+
+      if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
+         y = height - y - 1;
+      }
+
+      dst = drawMap + y * ptDraw->stride;
+      src = buffer + i * width;
+
+      switch (ptDraw->resource->format) {
+      case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
+         {
+            uint *dst4 = (uint *) dst;
+            int j;
+            assert(usage == PIPE_TRANSFER_READ_WRITE);
+            for (j = 0; j < width; j++) {
+               *dst4 = (*dst4 & 0xffffff) | (src[j] << 24);
+               dst4++;
+            }
+         }
+         break;
+      case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
+         {
+            uint *dst4 = (uint *) dst;
+            int j;
+            assert(usage == PIPE_TRANSFER_READ_WRITE);
+            for (j = 0; j < width; j++) {
+               *dst4 = (*dst4 & 0xffffff00) | (src[j] & 0xff);
+               dst4++;
+            }
+         }
+         break;
+      case PIPE_FORMAT_S8_USCALED:
+         assert(usage == PIPE_TRANSFER_WRITE);
+         memcpy(dst, src, width);
+         break;
+      default:
+         assert(0);
+      }
+   }
+
+   free(buffer);
+
+   /* unmap the stencil buffer */
+   pipe_transfer_unmap(pipe, ptDraw);
+   pipe->transfer_destroy(pipe, ptDraw);
+}
+
+
+/** Do the src/dest regions overlap? */
+static GLboolean
+regions_overlap(GLint srcX, GLint srcY, GLint dstX, GLint dstY,
+                GLsizei width, GLsizei height)
+{
+   if (srcX + width <= dstX ||
+       dstX + width <= srcX ||
+       srcY + height <= dstY ||
+       dstY + height <= srcY)
+      return GL_FALSE;
+   else
+      return GL_TRUE;
+}
+
+
+/**
+ * Try to do a glCopyPixels for simple cases with a blit by calling
+ * pipe->resource_copy_region().
+ *
+ * We can do this when we're copying color pixels (depth/stencil
+ * eventually) with no pixel zoom, no pixel transfer ops, no
+ * per-fragment ops, the src/dest regions don't overlap and the
+ * src/dest pixel formats are the same.
+ */
+static GLboolean
+blit_copy_pixels(struct gl_context *ctx, GLint srcx, GLint srcy,
+                 GLsizei width, GLsizei height,
+                 GLint dstx, GLint dsty, GLenum type)
+{
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
+   struct gl_pixelstore_attrib pack, unpack;
+   GLint readX, readY, readW, readH;
+
+   if (type == GL_COLOR &&
+       ctx->Pixel.ZoomX == 1.0 &&
+       ctx->Pixel.ZoomY == 1.0 &&
+       ctx->_ImageTransferState == 0x0 &&
+       !ctx->Color.BlendEnabled &&
+       !ctx->Color.AlphaEnabled &&
+       !ctx->Depth.Test &&
+       !ctx->Fog.Enabled &&
+       !ctx->Stencil.Enabled &&
+       !ctx->FragmentProgram.Enabled &&
+       !ctx->VertexProgram.Enabled &&
+       !ctx->Shader.CurrentFragmentProgram &&
+       st_fb_orientation(ctx->ReadBuffer) == st_fb_orientation(ctx->DrawBuffer) &&
+       ctx->DrawBuffer->_NumColorDrawBuffers == 1) {
+      struct st_renderbuffer *rbRead, *rbDraw;
+      GLint drawX, drawY;
+
+      /*
+       * Clip the read region against the src buffer bounds.
+       * We'll still allocate a temporary buffer/texture for the original
+       * src region size but we'll only read the region which is on-screen.
+       * This may mean that we draw garbage pixels into the dest region, but
+       * that's expected.
+       */
+      readX = srcx;
+      readY = srcy;
+      readW = width;
+      readH = height;
+      pack = ctx->DefaultPacking;
+      if (!_mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack))
+         return GL_TRUE; /* all done */
+
+      /* clip against dest buffer bounds and scissor box */
+      drawX = dstx + pack.SkipPixels;
+      drawY = dsty + pack.SkipRows;
+      unpack = pack;
+      if (!_mesa_clip_drawpixels(ctx, &drawX, &drawY, &readW, &readH, &unpack))
+         return GL_TRUE; /* all done */
+
+      readX = readX - pack.SkipPixels + unpack.SkipPixels;
+      readY = readY - pack.SkipRows + unpack.SkipRows;
+
+      rbRead = st_get_color_read_renderbuffer(ctx);
+      rbDraw = st_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
+
+      if ((rbRead != rbDraw ||
+           !regions_overlap(readX, readY, drawX, drawY, readW, readH)) &&
+          rbRead->Base.Format == rbDraw->Base.Format) {
+         struct pipe_box srcBox;
+
+         /* flip src/dst position if needed */
+         if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
+            /* both buffers will have the same orientation */
+            readY = ctx->ReadBuffer->Height - readY - readH;
+            drawY = ctx->DrawBuffer->Height - drawY - readH;
+         }
+
+         u_box_2d(readX, readY, readW, readH, &srcBox);
+
+         pipe->resource_copy_region(pipe,
+                                    rbDraw->texture, 0, drawX, drawY, 0,
+                                    rbRead->texture, 0, &srcBox);
+         return GL_TRUE;
+      }
+   }
+
+   return GL_FALSE;
+}
+
+
+static void
+st_CopyPixels(struct gl_context *ctx, GLint srcx, GLint srcy,
+              GLsizei width, GLsizei height,
+              GLint dstx, GLint dsty, GLenum type)
+{
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
+   struct pipe_screen *screen = pipe->screen;
+   struct st_renderbuffer *rbRead;
+   void *driver_vp, *driver_fp;
+   struct pipe_resource *pt;
+   struct pipe_sampler_view *sv[2];
+   int num_sampler_view = 1;
+   GLfloat *color;
+   enum pipe_format srcFormat, texFormat;
+   GLboolean invertTex = GL_FALSE;
+   GLint readX, readY, readW, readH;
+   GLuint sample_count;
+   struct gl_pixelstore_attrib pack = ctx->DefaultPacking;
+   struct st_fp_variant *fpv;
+
+   st_validate_state(st);
+
+   if (type == GL_STENCIL) {
+      /* can't use texturing to do stencil */
+      copy_stencil_pixels(ctx, srcx, srcy, width, height, dstx, dsty);
+      return;
+   }
+
+   if (blit_copy_pixels(ctx, srcx, srcy, width, height, dstx, dsty, type))
+      return;
+
+   /*
+    * The subsequent code implements glCopyPixels by copying the source
+    * pixels into a temporary texture that's then applied to a textured quad.
+    * When we draw the textured quad, all the usual per-fragment operations
+    * are handled.
+    */
+
+
+   /*
+    * Get vertex/fragment shaders
+    */
+   if (type == GL_COLOR) {
+      rbRead = st_get_color_read_renderbuffer(ctx);
+      color = NULL;
+
+      fpv = get_color_fp_variant(st);
+      driver_fp = fpv->driver_shader;
+
+      driver_vp = make_passthrough_vertex_shader(st, GL_FALSE);
+
+      if (st->pixel_xfer.pixelmap_enabled) {
+	  sv[1] = st->pixel_xfer.pixelmap_sampler_view;
+	  num_sampler_view++;
+      }
+   }
+   else {
+      assert(type == GL_DEPTH);
+      rbRead = st_renderbuffer(ctx->ReadBuffer->_DepthBuffer);
+      color = ctx->Current.Attrib[VERT_ATTRIB_COLOR0];
+
+      fpv = get_depth_stencil_fp_variant(st, GL_TRUE, GL_FALSE);
+      driver_fp = fpv->driver_shader;
+
+      driver_vp = make_passthrough_vertex_shader(st, GL_TRUE);
+   }
+
+   /* update fragment program constants */
+   st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT);
+
+
+   if (rbRead->Base.Wrapped)
+      rbRead = st_renderbuffer(rbRead->Base.Wrapped);
+
+   sample_count = rbRead->texture->nr_samples;
+   /* I believe this would be legal, presumably would need to do a resolve
+      for color, and for depth/stencil spec says to just use one of the
+      depth/stencil samples per pixel? Need some transfer clarifications. */
+   assert(sample_count < 2);
+
+   srcFormat = rbRead->texture->format;
+
+   if (screen->is_format_supported(screen, srcFormat, st->internal_target,
+                                   sample_count,
+                                   PIPE_BIND_SAMPLER_VIEW, 0)) {
+      texFormat = srcFormat;
+   }
+   else {
+      /* srcFormat can't be used as a texture format */
+      if (type == GL_DEPTH) {
+         texFormat = st_choose_format(screen, GL_DEPTH_COMPONENT,
+                                      st->internal_target, sample_count,
+                                      PIPE_BIND_DEPTH_STENCIL);
+         assert(texFormat != PIPE_FORMAT_NONE);
+      }
+      else {
+         /* default color format */
+         texFormat = st_choose_format(screen, GL_RGBA, st->internal_target,
+                                      sample_count, PIPE_BIND_SAMPLER_VIEW);
+         assert(texFormat != PIPE_FORMAT_NONE);
+      }
+   }
+
+   /* Invert src region if needed */
+   if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
+      srcy = ctx->ReadBuffer->Height - srcy - height;
+      invertTex = !invertTex;
+   }
+
+   /* Clip the read region against the src buffer bounds.
+    * We'll still allocate a temporary buffer/texture for the original
+    * src region size but we'll only read the region which is on-screen.
+    * This may mean that we draw garbage pixels into the dest region, but
+    * that's expected.
+    */
+   readX = srcx;
+   readY = srcy;
+   readW = width;
+   readH = height;
+   _mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack);
+   readW = MAX2(0, readW);
+   readH = MAX2(0, readH);
+
+   /* alloc temporary texture */
+   pt = alloc_texture(st, width, height, texFormat);
+   if (!pt)
+      return;
+
+   sv[0] = st_create_texture_sampler_view(st->pipe, pt);
+   if (!sv[0]) {
+      pipe_resource_reference(&pt, NULL);
+      return;
+   }
+
+   /* Make temporary texture which is a copy of the src region.
+    */
+   if (srcFormat == texFormat) {
+      struct pipe_box src_box;
+      u_box_2d(readX, readY, readW, readH, &src_box);
+      /* copy source framebuffer surface into mipmap/texture */
+      pipe->resource_copy_region(pipe,
+                                 pt,                                /* dest tex */
+                                 0,
+                                 pack.SkipPixels, pack.SkipRows, 0, /* dest pos */
+                                 rbRead->texture,                   /* src tex */
+                                 0,
+                                 &src_box);
+
+   }
+   else {
+      /* CPU-based fallback/conversion */
+      struct pipe_transfer *ptRead =
+         pipe_get_transfer(st->pipe, rbRead->texture,
+                           0, 0, /* level, layer */
+                           PIPE_TRANSFER_READ,
+                           readX, readY, readW, readH);
+      struct pipe_transfer *ptTex;
+      enum pipe_transfer_usage transfer_usage;
+
+      if (ST_DEBUG & DEBUG_FALLBACK)
+         debug_printf("%s: fallback processing\n", __FUNCTION__);
+
+      if (type == GL_DEPTH && util_format_is_depth_and_stencil(pt->format))
+         transfer_usage = PIPE_TRANSFER_READ_WRITE;
+      else
+         transfer_usage = PIPE_TRANSFER_WRITE;
+
+      ptTex = pipe_get_transfer(st->pipe, pt, 0, 0, transfer_usage,
+                                0, 0, width, height);
+
+      /* copy image from ptRead surface to ptTex surface */
+      if (type == GL_COLOR) {
+         /* alternate path using get/put_tile() */
+         GLfloat *buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
+         enum pipe_format readFormat, drawFormat;
+         readFormat = util_format_linear(rbRead->texture->format);
+         drawFormat = util_format_linear(pt->format);
+         pipe_get_tile_rgba_format(pipe, ptRead, 0, 0, readW, readH,
+                                   readFormat, buf);
+         pipe_put_tile_rgba_format(pipe, ptTex, pack.SkipPixels, pack.SkipRows,
+                                   readW, readH, drawFormat, buf);
+         free(buf);
+      }
+      else {
+         /* GL_DEPTH */
+         GLuint *buf = (GLuint *) malloc(width * height * sizeof(GLuint));
+         pipe_get_tile_z(pipe, ptRead, 0, 0, readW, readH, buf);
+         pipe_put_tile_z(pipe, ptTex, pack.SkipPixels, pack.SkipRows,
+                         readW, readH, buf);
+         free(buf);
+      }
+
+      pipe->transfer_destroy(pipe, ptRead);
+      pipe->transfer_destroy(pipe, ptTex);
+   }
+
+   /* OK, the texture 'pt' contains the src image/pixels.  Now draw a
+    * textured quad with that texture.
+    */
+   draw_textured_quad(ctx, dstx, dsty, ctx->Current.RasterPos[2],
+                      width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
+                      sv,
+                      num_sampler_view,
+                      driver_vp, 
+                      driver_fp,
+                      color, invertTex, GL_FALSE, GL_FALSE);
+
+   pipe_resource_reference(&pt, NULL);
+   pipe_sampler_view_reference(&sv[0], NULL);
+}
+
+
+
+void st_init_drawpixels_functions(struct dd_function_table *functions)
+{
+   functions->DrawPixels = st_DrawPixels;
+   functions->CopyPixels = st_CopyPixels;
+}
+
+
+void
+st_destroy_drawpix(struct st_context *st)
+{
+   GLuint i;
+
+   for (i = 0; i < Elements(st->drawpix.shaders); i++) {
+      if (st->drawpix.shaders[i])
+         _mesa_reference_fragprog(st->ctx, &st->drawpix.shaders[i], NULL);
+   }
+
+   st_reference_fragprog(st, &st->pixel_xfer.combined_prog, NULL);
+   if (st->drawpix.vert_shaders[0])
+      ureg_free_tokens(st->drawpix.vert_shaders[0]);
+   if (st->drawpix.vert_shaders[1])
+      ureg_free_tokens(st->drawpix.vert_shaders[1]);
+}
+
+#endif /* FEATURE_drawpix */
diff --git a/mesalib/src/mesa/state_tracker/st_cb_readpixels.c b/mesalib/src/mesa/state_tracker/st_cb_readpixels.c
index 570873916..f8da2a4d1 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_readpixels.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_readpixels.c
@@ -1,560 +1,561 @@
-/**************************************************************************

- * 

- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.

- * All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the

- * "Software"), to deal in the Software without restriction, including

- * without limitation the rights to use, copy, modify, merge, publish,

- * distribute, sub license, and/or sell copies of the Software, and to

- * permit persons to whom the Software is furnished to do so, subject to

- * the following conditions:

- * 

- * The above copyright notice and this permission notice (including the

- * next paragraph) shall be included in all copies or substantial portions

- * of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.

- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR

- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- * 

- **************************************************************************/

-

-

-/**

- * glReadPixels interface to pipe

- *

- * \author Brian Paul

- */

-

-

-#include "main/imports.h"

-#include "main/bufferobj.h"

-#include "main/context.h"

-#include "main/image.h"

-#include "main/pack.h"

-

-#include "pipe/p_context.h"

-#include "pipe/p_defines.h"

-#include "util/u_format.h"

-#include "util/u_inlines.h"

-#include "util/u_tile.h"

-

-#include "st_debug.h"

-#include "st_context.h"

-#include "st_atom.h"

-#include "st_cb_bitmap.h"

-#include "st_cb_readpixels.h"

-#include "st_cb_fbo.h"

-

-/**

- * Special case for reading stencil buffer.

- * For color/depth we use get_tile().  For stencil, map the stencil buffer.

- */

-void

-st_read_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,

-                       GLsizei width, GLsizei height,

-                       GLenum format, GLenum type,

-                       const struct gl_pixelstore_attrib *packing,

-                       GLvoid *pixels)

-{

-   struct gl_framebuffer *fb = ctx->ReadBuffer;

-   struct pipe_context *pipe = st_context(ctx)->pipe;

-   struct st_renderbuffer *strb = st_renderbuffer(fb->_StencilBuffer);

-   struct pipe_transfer *pt;

-   ubyte *stmap;

-   GLint j;

-

-   if (strb->Base.Wrapped) {

-      strb = st_renderbuffer(strb->Base.Wrapped);

-   }

-

-   if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {

-      y = ctx->DrawBuffer->Height - y - height;

-   }

-

-   /* Create a read transfer from the renderbuffer's texture */

-

-   pt = pipe_get_transfer(pipe, strb->texture,

-                          0, 0,

-                          PIPE_TRANSFER_READ,

-                          x, y, width, height);

-

-   /* map the stencil buffer */

-   stmap = pipe_transfer_map(pipe, pt);

-

-   /* width should never be > MAX_WIDTH since we did clipping earlier */

-   ASSERT(width <= MAX_WIDTH);

-

-   /* process image row by row */

-   for (j = 0; j < height; j++) {

-      GLvoid *dest;

-      GLstencil sValues[MAX_WIDTH];

-      GLfloat zValues[MAX_WIDTH];

-      GLint srcY;

-

-      if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {

-         srcY = height - j - 1;

-      }

-      else {

-         srcY = j;

-      }

-

-      /* get stencil (and Z) values */

-      switch (pt->resource->format) {

-      case PIPE_FORMAT_S8_USCALED:

-         {

-            const ubyte *src = stmap + srcY * pt->stride;

-            memcpy(sValues, src, width);

-         }

-         break;

-      case PIPE_FORMAT_Z24_UNORM_S8_USCALED:

-         if (format == GL_DEPTH_STENCIL) {

-            const uint *src = (uint *) (stmap + srcY * pt->stride);

-            const GLfloat scale = 1.0f / (0xffffff);

-            GLint k;

-            for (k = 0; k < width; k++) {

-               sValues[k] = src[k] >> 24;

-               zValues[k] = (src[k] & 0xffffff) * scale;

-            }

-         }

-         else {

-            const uint *src = (uint *) (stmap + srcY * pt->stride);

-            GLint k;

-            for (k = 0; k < width; k++) {

-               sValues[k] = src[k] >> 24;

-            }

-         }

-         break;

-      case PIPE_FORMAT_S8_USCALED_Z24_UNORM:

-         if (format == GL_DEPTH_STENCIL) {

-            const uint *src = (uint *) (stmap + srcY * pt->stride);

-            const GLfloat scale = 1.0f / (0xffffff);

-            GLint k;

-            for (k = 0; k < width; k++) {

-               sValues[k] = src[k] & 0xff;

-               zValues[k] = (src[k] >> 8) * scale;

-            }

-         }

-         else {

-            const uint *src = (uint *) (stmap + srcY * pt->stride);

-            GLint k;

-            for (k = 0; k < width; k++) {

-               sValues[k] = src[k] & 0xff;

-            }

-         }

-         break;

-      default:

-         assert(0);

-      }

-

-      /* store */

-      dest = _mesa_image_address2d(packing, pixels, width, height,

-                                   format, type, j, 0);

-      if (format == GL_DEPTH_STENCIL) {

-         _mesa_pack_depth_stencil_span(ctx, width, dest,

-                                       zValues, sValues, packing);

-      }

-      else {

-         _mesa_pack_stencil_span(ctx, width, type, dest, sValues, packing);

-      }

-   }

-

-   /* unmap the stencil buffer */

-   pipe_transfer_unmap(pipe, pt);

-   pipe->transfer_destroy(pipe, pt);

-}

-

-

-/**

- * Return renderbuffer to use for reading color pixels for glRead/CopyPixel

- * commands.

- */

-struct st_renderbuffer *

-st_get_color_read_renderbuffer(struct gl_context *ctx)

-{

-   struct gl_framebuffer *fb = ctx->ReadBuffer;

-   struct st_renderbuffer *strb =

-      st_renderbuffer(fb->_ColorReadBuffer);

-

-   return strb;

-}

-

-

-/**

- * Try to do glReadPixels in a fast manner for common cases.

- * \return GL_TRUE for success, GL_FALSE for failure

- */

-static GLboolean

-st_fast_readpixels(struct gl_context *ctx, struct st_renderbuffer *strb,

-                   GLint x, GLint y, GLsizei width, GLsizei height,

-                   GLenum format, GLenum type,

-                   const struct gl_pixelstore_attrib *pack,

-                   GLvoid *dest)

-{

-   enum combination {

-      A8R8G8B8_UNORM_TO_RGBA_UBYTE,

-      A8R8G8B8_UNORM_TO_RGB_UBYTE,

-      A8R8G8B8_UNORM_TO_BGRA_UINT

-   } combo;

-

-   if (ctx->_ImageTransferState)

-      return GL_FALSE;

-

-   if (strb->format == PIPE_FORMAT_B8G8R8A8_UNORM &&

-       format == GL_RGBA && type == GL_UNSIGNED_BYTE) {

-      combo = A8R8G8B8_UNORM_TO_RGBA_UBYTE;

-   }

-   else if (strb->format == PIPE_FORMAT_B8G8R8A8_UNORM &&

-            format == GL_RGB && type == GL_UNSIGNED_BYTE) {

-      combo = A8R8G8B8_UNORM_TO_RGB_UBYTE;

-   }

-   else if (strb->format == PIPE_FORMAT_B8G8R8A8_UNORM &&

-            format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV) {

-      combo = A8R8G8B8_UNORM_TO_BGRA_UINT;

-   }

-   else {

-      return GL_FALSE;

-   }

-

-   /*printf("st_fast_readpixels combo %d\n", (GLint) combo);*/

-

-   {

-      struct pipe_context *pipe = st_context(ctx)->pipe;

-      struct pipe_transfer *trans;

-      const GLubyte *map;

-      GLubyte *dst;

-      GLint row, col, dy, dstStride;

-

-      if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {

-         /* convert GL Y to Gallium Y */

-         y = strb->texture->height0 - y - height;

-      }

-

-      trans = pipe_get_transfer(pipe, strb->texture,

-                                0, 0,

-                                PIPE_TRANSFER_READ,

-                                x, y, width, height);

-      if (!trans) {

-         return GL_FALSE;

-      }

-

-      map = pipe_transfer_map(pipe, trans);

-      if (!map) {

-         pipe->transfer_destroy(pipe, trans);

-         return GL_FALSE;

-      }

-

-      /* We always write to the user/dest buffer from low addr to high addr

-       * but the read order depends on renderbuffer orientation

-       */

-      if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {

-         /* read source rows from bottom to top */

-         y = height - 1;

-         dy = -1;

-      }

-      else {

-         /* read source rows from top to bottom */

-         y = 0;

-         dy = 1;

-      }

-

-      dst = _mesa_image_address2d(pack, dest, width, height,

-                                  format, type, 0, 0);

-      dstStride = _mesa_image_row_stride(pack, width, format, type);

-

-      switch (combo) {

-      case A8R8G8B8_UNORM_TO_RGBA_UBYTE:

-         for (row = 0; row < height; row++) {

-            const GLubyte *src = map + y * trans->stride;

-            for (col = 0; col < width; col++) {

-               GLuint pixel = ((GLuint *) src)[col];

-               dst[col*4+0] = (pixel >> 16) & 0xff;

-               dst[col*4+1] = (pixel >>  8) & 0xff;

-               dst[col*4+2] = (pixel >>  0) & 0xff;

-               dst[col*4+3] = (pixel >> 24) & 0xff;

-            }

-            dst += dstStride;

-            y += dy;

-         }

-         break;

-      case A8R8G8B8_UNORM_TO_RGB_UBYTE:

-         for (row = 0; row < height; row++) {

-            const GLubyte *src = map + y * trans->stride;

-            for (col = 0; col < width; col++) {

-               GLuint pixel = ((GLuint *) src)[col];

-               dst[col*3+0] = (pixel >> 16) & 0xff;

-               dst[col*3+1] = (pixel >>  8) & 0xff;

-               dst[col*3+2] = (pixel >>  0) & 0xff;

-            }

-            dst += dstStride;

-            y += dy;

-         }

-         break;

-      case A8R8G8B8_UNORM_TO_BGRA_UINT:

-         for (row = 0; row < height; row++) {

-            const GLubyte *src = map + y * trans->stride;

-            memcpy(dst, src, 4 * width);

-            dst += dstStride;

-            y += dy;

-         }

-         break;

-      default:

-         ; /* nothing */

-      }

-

-      pipe_transfer_unmap(pipe, trans);

-      pipe->transfer_destroy(pipe, trans);

-   }

-

-   return GL_TRUE;

-}

-

-

-/**

- * Do glReadPixels by getting rows from the framebuffer transfer with

- * get_tile().  Convert to requested format/type with Mesa image routines.

- * Image transfer ops are done in software too.

- */

-static void

-st_readpixels(struct gl_context *ctx, GLint x, GLint y, GLsizei width, GLsizei height,

-              GLenum format, GLenum type,

-              const struct gl_pixelstore_attrib *pack,

-              GLvoid *dest)

-{

-   struct st_context *st = st_context(ctx);

-   struct pipe_context *pipe = st->pipe;

-   GLfloat (*temp)[4];

-   const GLbitfield transferOps = ctx->_ImageTransferState;

-   GLsizei i, j;

-   GLint yStep, dfStride;

-   GLfloat *df;

-   struct st_renderbuffer *strb;

-   struct gl_pixelstore_attrib clippedPacking = *pack;

-   struct pipe_transfer *trans;

-   enum pipe_format pformat;

-

-   assert(ctx->ReadBuffer->Width > 0);

-

-   st_validate_state(st);

-

-   /* Do all needed clipping here, so that we can forget about it later */

-   if (!_mesa_clip_readpixels(ctx, &x, &y, &width, &height, &clippedPacking)) {

-      /* The ReadPixels transfer is totally outside the window bounds */

-      return;

-   }

-

-   st_flush_bitmap_cache(st);

-

-   dest = _mesa_map_pbo_dest(ctx, &clippedPacking, dest);

-   if (!dest)

-      return;

-

-   if (format == GL_STENCIL_INDEX ||

-       format == GL_DEPTH_STENCIL) {

-      st_read_stencil_pixels(ctx, x, y, width, height,

-                             format, type, pack, dest);

-      return;

-   }

-   else if (format == GL_DEPTH_COMPONENT) {

-      strb = st_renderbuffer(ctx->ReadBuffer->_DepthBuffer);

-      if (strb->Base.Wrapped) {

-         strb = st_renderbuffer(strb->Base.Wrapped);

-      }

-   }

-   else {

-      /* Read color buffer */

-      strb = st_get_color_read_renderbuffer(ctx);

-   }

-

-   if (!strb)

-      return;

-

-   /* try a fast-path readpixels before anything else */

-   if (st_fast_readpixels(ctx, strb, x, y, width, height,

-                          format, type, pack, dest)) {

-      /* success! */

-      _mesa_unmap_pbo_dest(ctx, &clippedPacking);

-      return;

-   }

-

-   /* allocate temp pixel row buffer */

-   temp = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));

-   if (!temp) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glReadPixels");

-      return;

-   }

-

-   if (format == GL_RGBA && type == GL_FLOAT) {

-      /* write tile(row) directly into user's buffer */

-      df = (GLfloat *) _mesa_image_address2d(&clippedPacking, dest, width,

-                                             height, format, type, 0, 0);

-      dfStride = width * 4;

-   }

-   else {

-      /* write tile(row) into temp row buffer */

-      df = (GLfloat *) temp;

-      dfStride = 0;

-   }

-

-   if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {

-      /* convert GL Y to Gallium Y */

-      y = strb->Base.Height - y - height;

-   }

-

-   /* Create a read transfer from the renderbuffer's texture */

-   trans = pipe_get_transfer(pipe, strb->texture,

-                             0, 0,

-                             PIPE_TRANSFER_READ,

-                             x, y, width, height);

-

-   /* determine bottom-to-top vs. top-to-bottom order */

-   if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {

-      y = height - 1;

-      yStep = -1;

-   }

-   else {

-      y = 0;

-      yStep = 1;

-   }

-

-   /* possibly convert sRGB format to linear RGB format */

-   pformat = util_format_linear(trans->resource->format);

-

-   if (ST_DEBUG & DEBUG_FALLBACK)

-      debug_printf("%s: fallback processing\n", __FUNCTION__);

-

-   /*

-    * Copy pixels from pipe_transfer to user memory

-    */

-   {

-      /* dest of first pixel in client memory */

-      GLubyte *dst = _mesa_image_address2d(&clippedPacking, dest, width,

-                                           height, format, type, 0, 0);

-      /* dest row stride */

-      const GLint dstStride = _mesa_image_row_stride(&clippedPacking, width,

-                                                     format, type);

-

-      if (pformat == PIPE_FORMAT_Z24_UNORM_S8_USCALED ||

-          pformat == PIPE_FORMAT_Z24X8_UNORM) {

-         if (format == GL_DEPTH_COMPONENT) {

-            for (i = 0; i < height; i++) {

-               GLuint ztemp[MAX_WIDTH];

-               GLfloat zfloat[MAX_WIDTH];

-               const double scale = 1.0 / ((1 << 24) - 1);

-               pipe_get_tile_raw(pipe, trans, 0, y, width, 1, ztemp, 0);

-               y += yStep;

-               for (j = 0; j < width; j++) {

-                  zfloat[j] = (float) (scale * (ztemp[j] & 0xffffff));

-               }

-               _mesa_pack_depth_span(ctx, width, dst, type,

-                                     zfloat, &clippedPacking);

-               dst += dstStride;

-            }

-         }

-         else {

-            /* XXX: unreachable code -- should be before st_read_stencil_pixels */

-            assert(format == GL_DEPTH_STENCIL_EXT);

-            for (i = 0; i < height; i++) {

-               GLuint *zshort = (GLuint *)dst;

-               pipe_get_tile_raw(pipe, trans, 0, y, width, 1, dst, 0);

-               y += yStep;

-               /* Reverse into 24/8 */

-               for (j = 0; j < width; j++) {

-                  zshort[j] = (zshort[j] << 8) | (zshort[j] >> 24);

-               }

-               dst += dstStride;

-            }

-         }

-      }

-      else if (pformat == PIPE_FORMAT_S8_USCALED_Z24_UNORM ||

-               pformat == PIPE_FORMAT_X8Z24_UNORM) {

-         if (format == GL_DEPTH_COMPONENT) {

-            for (i = 0; i < height; i++) {

-               GLuint ztemp[MAX_WIDTH];

-               GLfloat zfloat[MAX_WIDTH];

-               const double scale = 1.0 / ((1 << 24) - 1);

-               pipe_get_tile_raw(pipe, trans, 0, y, width, 1, ztemp, 0);

-               y += yStep;

-               for (j = 0; j < width; j++) {

-                  zfloat[j] = (float) (scale * ((ztemp[j] >> 8) & 0xffffff));

-               }

-               _mesa_pack_depth_span(ctx, width, dst, type,

-                                     zfloat, &clippedPacking);

-               dst += dstStride;

-            }

-         }

-         else {

-            /* XXX: unreachable code -- should be before st_read_stencil_pixels */

-            assert(format == GL_DEPTH_STENCIL_EXT);

-            for (i = 0; i < height; i++) {

-               pipe_get_tile_raw(pipe, trans, 0, y, width, 1, dst, 0);

-               y += yStep;

-               dst += dstStride;

-            }

-         }

-      }

-      else if (pformat == PIPE_FORMAT_Z16_UNORM) {

-         for (i = 0; i < height; i++) {

-            GLushort ztemp[MAX_WIDTH];

-            GLfloat zfloat[MAX_WIDTH];

-            const double scale = 1.0 / 0xffff;

-            pipe_get_tile_raw(pipe, trans, 0, y, width, 1, ztemp, 0);

-            y += yStep;

-            for (j = 0; j < width; j++) {

-               zfloat[j] = (float) (scale * ztemp[j]);

-            }

-            _mesa_pack_depth_span(ctx, width, dst, type,

-                                  zfloat, &clippedPacking);

-            dst += dstStride;

-         }

-      }

-      else if (pformat == PIPE_FORMAT_Z32_UNORM) {

-         for (i = 0; i < height; i++) {

-            GLuint ztemp[MAX_WIDTH];

-            GLfloat zfloat[MAX_WIDTH];

-            const double scale = 1.0 / 0xffffffff;

-            pipe_get_tile_raw(pipe, trans, 0, y, width, 1, ztemp, 0);

-            y += yStep;

-            for (j = 0; j < width; j++) {

-               zfloat[j] = (float) (scale * ztemp[j]);

-            }

-            _mesa_pack_depth_span(ctx, width, dst, type,

-                                  zfloat, &clippedPacking);

-            dst += dstStride;

-         }

-      }

-      else {

-         /* RGBA format */

-         /* Do a row at a time to flip image data vertically */

-         for (i = 0; i < height; i++) {

-            pipe_get_tile_rgba_format(pipe, trans, 0, y, width, 1,

-                                      pformat, df);

-            y += yStep;

-            df += dfStride;

-            if (!dfStride) {

-               _mesa_pack_rgba_span_float(ctx, width, temp, format, type, dst,

-                                          &clippedPacking, transferOps);

-               dst += dstStride;

-            }

-         }

-      }

-   }

-

-   free(temp);

-

-   pipe->transfer_destroy(pipe, trans);

-

-   _mesa_unmap_pbo_dest(ctx, &clippedPacking);

-}

-

-

-void st_init_readpixels_functions(struct dd_function_table *functions)

-{

-   functions->ReadPixels = st_readpixels;

-}

+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+
+/**
+ * glReadPixels interface to pipe
+ *
+ * \author Brian Paul
+ */
+
+
+#include "main/imports.h"
+#include "main/bufferobj.h"
+#include "main/context.h"
+#include "main/image.h"
+#include "main/pack.h"
+#include "main/pbo.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "util/u_format.h"
+#include "util/u_inlines.h"
+#include "util/u_tile.h"
+
+#include "st_debug.h"
+#include "st_context.h"
+#include "st_atom.h"
+#include "st_cb_bitmap.h"
+#include "st_cb_readpixels.h"
+#include "st_cb_fbo.h"
+
+/**
+ * Special case for reading stencil buffer.
+ * For color/depth we use get_tile().  For stencil, map the stencil buffer.
+ */
+void
+st_read_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
+                       GLsizei width, GLsizei height,
+                       GLenum format, GLenum type,
+                       const struct gl_pixelstore_attrib *packing,
+                       GLvoid *pixels)
+{
+   struct gl_framebuffer *fb = ctx->ReadBuffer;
+   struct pipe_context *pipe = st_context(ctx)->pipe;
+   struct st_renderbuffer *strb = st_renderbuffer(fb->_StencilBuffer);
+   struct pipe_transfer *pt;
+   ubyte *stmap;
+   GLint j;
+
+   if (strb->Base.Wrapped) {
+      strb = st_renderbuffer(strb->Base.Wrapped);
+   }
+
+   if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
+      y = ctx->DrawBuffer->Height - y - height;
+   }
+
+   /* Create a read transfer from the renderbuffer's texture */
+
+   pt = pipe_get_transfer(pipe, strb->texture,
+                          0, 0,
+                          PIPE_TRANSFER_READ,
+                          x, y, width, height);
+
+   /* map the stencil buffer */
+   stmap = pipe_transfer_map(pipe, pt);
+
+   /* width should never be > MAX_WIDTH since we did clipping earlier */
+   ASSERT(width <= MAX_WIDTH);
+
+   /* process image row by row */
+   for (j = 0; j < height; j++) {
+      GLvoid *dest;
+      GLstencil sValues[MAX_WIDTH];
+      GLfloat zValues[MAX_WIDTH];
+      GLint srcY;
+
+      if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
+         srcY = height - j - 1;
+      }
+      else {
+         srcY = j;
+      }
+
+      /* get stencil (and Z) values */
+      switch (pt->resource->format) {
+      case PIPE_FORMAT_S8_USCALED:
+         {
+            const ubyte *src = stmap + srcY * pt->stride;
+            memcpy(sValues, src, width);
+         }
+         break;
+      case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
+         if (format == GL_DEPTH_STENCIL) {
+            const uint *src = (uint *) (stmap + srcY * pt->stride);
+            const GLfloat scale = 1.0f / (0xffffff);
+            GLint k;
+            for (k = 0; k < width; k++) {
+               sValues[k] = src[k] >> 24;
+               zValues[k] = (src[k] & 0xffffff) * scale;
+            }
+         }
+         else {
+            const uint *src = (uint *) (stmap + srcY * pt->stride);
+            GLint k;
+            for (k = 0; k < width; k++) {
+               sValues[k] = src[k] >> 24;
+            }
+         }
+         break;
+      case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
+         if (format == GL_DEPTH_STENCIL) {
+            const uint *src = (uint *) (stmap + srcY * pt->stride);
+            const GLfloat scale = 1.0f / (0xffffff);
+            GLint k;
+            for (k = 0; k < width; k++) {
+               sValues[k] = src[k] & 0xff;
+               zValues[k] = (src[k] >> 8) * scale;
+            }
+         }
+         else {
+            const uint *src = (uint *) (stmap + srcY * pt->stride);
+            GLint k;
+            for (k = 0; k < width; k++) {
+               sValues[k] = src[k] & 0xff;
+            }
+         }
+         break;
+      default:
+         assert(0);
+      }
+
+      /* store */
+      dest = _mesa_image_address2d(packing, pixels, width, height,
+                                   format, type, j, 0);
+      if (format == GL_DEPTH_STENCIL) {
+         _mesa_pack_depth_stencil_span(ctx, width, dest,
+                                       zValues, sValues, packing);
+      }
+      else {
+         _mesa_pack_stencil_span(ctx, width, type, dest, sValues, packing);
+      }
+   }
+
+   /* unmap the stencil buffer */
+   pipe_transfer_unmap(pipe, pt);
+   pipe->transfer_destroy(pipe, pt);
+}
+
+
+/**
+ * Return renderbuffer to use for reading color pixels for glRead/CopyPixel
+ * commands.
+ */
+struct st_renderbuffer *
+st_get_color_read_renderbuffer(struct gl_context *ctx)
+{
+   struct gl_framebuffer *fb = ctx->ReadBuffer;
+   struct st_renderbuffer *strb =
+      st_renderbuffer(fb->_ColorReadBuffer);
+
+   return strb;
+}
+
+
+/**
+ * Try to do glReadPixels in a fast manner for common cases.
+ * \return GL_TRUE for success, GL_FALSE for failure
+ */
+static GLboolean
+st_fast_readpixels(struct gl_context *ctx, struct st_renderbuffer *strb,
+                   GLint x, GLint y, GLsizei width, GLsizei height,
+                   GLenum format, GLenum type,
+                   const struct gl_pixelstore_attrib *pack,
+                   GLvoid *dest)
+{
+   enum combination {
+      A8R8G8B8_UNORM_TO_RGBA_UBYTE,
+      A8R8G8B8_UNORM_TO_RGB_UBYTE,
+      A8R8G8B8_UNORM_TO_BGRA_UINT
+   } combo;
+
+   if (ctx->_ImageTransferState)
+      return GL_FALSE;
+
+   if (strb->format == PIPE_FORMAT_B8G8R8A8_UNORM &&
+       format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
+      combo = A8R8G8B8_UNORM_TO_RGBA_UBYTE;
+   }
+   else if (strb->format == PIPE_FORMAT_B8G8R8A8_UNORM &&
+            format == GL_RGB && type == GL_UNSIGNED_BYTE) {
+      combo = A8R8G8B8_UNORM_TO_RGB_UBYTE;
+   }
+   else if (strb->format == PIPE_FORMAT_B8G8R8A8_UNORM &&
+            format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV) {
+      combo = A8R8G8B8_UNORM_TO_BGRA_UINT;
+   }
+   else {
+      return GL_FALSE;
+   }
+
+   /*printf("st_fast_readpixels combo %d\n", (GLint) combo);*/
+
+   {
+      struct pipe_context *pipe = st_context(ctx)->pipe;
+      struct pipe_transfer *trans;
+      const GLubyte *map;
+      GLubyte *dst;
+      GLint row, col, dy, dstStride;
+
+      if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
+         /* convert GL Y to Gallium Y */
+         y = strb->texture->height0 - y - height;
+      }
+
+      trans = pipe_get_transfer(pipe, strb->texture,
+                                0, 0,
+                                PIPE_TRANSFER_READ,
+                                x, y, width, height);
+      if (!trans) {
+         return GL_FALSE;
+      }
+
+      map = pipe_transfer_map(pipe, trans);
+      if (!map) {
+         pipe->transfer_destroy(pipe, trans);
+         return GL_FALSE;
+      }
+
+      /* We always write to the user/dest buffer from low addr to high addr
+       * but the read order depends on renderbuffer orientation
+       */
+      if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
+         /* read source rows from bottom to top */
+         y = height - 1;
+         dy = -1;
+      }
+      else {
+         /* read source rows from top to bottom */
+         y = 0;
+         dy = 1;
+      }
+
+      dst = _mesa_image_address2d(pack, dest, width, height,
+                                  format, type, 0, 0);
+      dstStride = _mesa_image_row_stride(pack, width, format, type);
+
+      switch (combo) {
+      case A8R8G8B8_UNORM_TO_RGBA_UBYTE:
+         for (row = 0; row < height; row++) {
+            const GLubyte *src = map + y * trans->stride;
+            for (col = 0; col < width; col++) {
+               GLuint pixel = ((GLuint *) src)[col];
+               dst[col*4+0] = (pixel >> 16) & 0xff;
+               dst[col*4+1] = (pixel >>  8) & 0xff;
+               dst[col*4+2] = (pixel >>  0) & 0xff;
+               dst[col*4+3] = (pixel >> 24) & 0xff;
+            }
+            dst += dstStride;
+            y += dy;
+         }
+         break;
+      case A8R8G8B8_UNORM_TO_RGB_UBYTE:
+         for (row = 0; row < height; row++) {
+            const GLubyte *src = map + y * trans->stride;
+            for (col = 0; col < width; col++) {
+               GLuint pixel = ((GLuint *) src)[col];
+               dst[col*3+0] = (pixel >> 16) & 0xff;
+               dst[col*3+1] = (pixel >>  8) & 0xff;
+               dst[col*3+2] = (pixel >>  0) & 0xff;
+            }
+            dst += dstStride;
+            y += dy;
+         }
+         break;
+      case A8R8G8B8_UNORM_TO_BGRA_UINT:
+         for (row = 0; row < height; row++) {
+            const GLubyte *src = map + y * trans->stride;
+            memcpy(dst, src, 4 * width);
+            dst += dstStride;
+            y += dy;
+         }
+         break;
+      default:
+         ; /* nothing */
+      }
+
+      pipe_transfer_unmap(pipe, trans);
+      pipe->transfer_destroy(pipe, trans);
+   }
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Do glReadPixels by getting rows from the framebuffer transfer with
+ * get_tile().  Convert to requested format/type with Mesa image routines.
+ * Image transfer ops are done in software too.
+ */
+static void
+st_readpixels(struct gl_context *ctx, GLint x, GLint y, GLsizei width, GLsizei height,
+              GLenum format, GLenum type,
+              const struct gl_pixelstore_attrib *pack,
+              GLvoid *dest)
+{
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
+   GLfloat (*temp)[4];
+   const GLbitfield transferOps = ctx->_ImageTransferState;
+   GLsizei i, j;
+   GLint yStep, dfStride;
+   GLfloat *df;
+   struct st_renderbuffer *strb;
+   struct gl_pixelstore_attrib clippedPacking = *pack;
+   struct pipe_transfer *trans;
+   enum pipe_format pformat;
+
+   assert(ctx->ReadBuffer->Width > 0);
+
+   st_validate_state(st);
+
+   /* Do all needed clipping here, so that we can forget about it later */
+   if (!_mesa_clip_readpixels(ctx, &x, &y, &width, &height, &clippedPacking)) {
+      /* The ReadPixels transfer is totally outside the window bounds */
+      return;
+   }
+
+   st_flush_bitmap_cache(st);
+
+   dest = _mesa_map_pbo_dest(ctx, &clippedPacking, dest);
+   if (!dest)
+      return;
+
+   if (format == GL_STENCIL_INDEX ||
+       format == GL_DEPTH_STENCIL) {
+      st_read_stencil_pixels(ctx, x, y, width, height,
+                             format, type, pack, dest);
+      return;
+   }
+   else if (format == GL_DEPTH_COMPONENT) {
+      strb = st_renderbuffer(ctx->ReadBuffer->_DepthBuffer);
+      if (strb->Base.Wrapped) {
+         strb = st_renderbuffer(strb->Base.Wrapped);
+      }
+   }
+   else {
+      /* Read color buffer */
+      strb = st_get_color_read_renderbuffer(ctx);
+   }
+
+   if (!strb)
+      return;
+
+   /* try a fast-path readpixels before anything else */
+   if (st_fast_readpixels(ctx, strb, x, y, width, height,
+                          format, type, pack, dest)) {
+      /* success! */
+      _mesa_unmap_pbo_dest(ctx, &clippedPacking);
+      return;
+   }
+
+   /* allocate temp pixel row buffer */
+   temp = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));
+   if (!temp) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glReadPixels");
+      return;
+   }
+
+   if (format == GL_RGBA && type == GL_FLOAT) {
+      /* write tile(row) directly into user's buffer */
+      df = (GLfloat *) _mesa_image_address2d(&clippedPacking, dest, width,
+                                             height, format, type, 0, 0);
+      dfStride = width * 4;
+   }
+   else {
+      /* write tile(row) into temp row buffer */
+      df = (GLfloat *) temp;
+      dfStride = 0;
+   }
+
+   if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
+      /* convert GL Y to Gallium Y */
+      y = strb->Base.Height - y - height;
+   }
+
+   /* Create a read transfer from the renderbuffer's texture */
+   trans = pipe_get_transfer(pipe, strb->texture,
+                             0, 0,
+                             PIPE_TRANSFER_READ,
+                             x, y, width, height);
+
+   /* determine bottom-to-top vs. top-to-bottom order */
+   if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
+      y = height - 1;
+      yStep = -1;
+   }
+   else {
+      y = 0;
+      yStep = 1;
+   }
+
+   /* possibly convert sRGB format to linear RGB format */
+   pformat = util_format_linear(trans->resource->format);
+
+   if (ST_DEBUG & DEBUG_FALLBACK)
+      debug_printf("%s: fallback processing\n", __FUNCTION__);
+
+   /*
+    * Copy pixels from pipe_transfer to user memory
+    */
+   {
+      /* dest of first pixel in client memory */
+      GLubyte *dst = _mesa_image_address2d(&clippedPacking, dest, width,
+                                           height, format, type, 0, 0);
+      /* dest row stride */
+      const GLint dstStride = _mesa_image_row_stride(&clippedPacking, width,
+                                                     format, type);
+
+      if (pformat == PIPE_FORMAT_Z24_UNORM_S8_USCALED ||
+          pformat == PIPE_FORMAT_Z24X8_UNORM) {
+         if (format == GL_DEPTH_COMPONENT) {
+            for (i = 0; i < height; i++) {
+               GLuint ztemp[MAX_WIDTH];
+               GLfloat zfloat[MAX_WIDTH];
+               const double scale = 1.0 / ((1 << 24) - 1);
+               pipe_get_tile_raw(pipe, trans, 0, y, width, 1, ztemp, 0);
+               y += yStep;
+               for (j = 0; j < width; j++) {
+                  zfloat[j] = (float) (scale * (ztemp[j] & 0xffffff));
+               }
+               _mesa_pack_depth_span(ctx, width, dst, type,
+                                     zfloat, &clippedPacking);
+               dst += dstStride;
+            }
+         }
+         else {
+            /* XXX: unreachable code -- should be before st_read_stencil_pixels */
+            assert(format == GL_DEPTH_STENCIL_EXT);
+            for (i = 0; i < height; i++) {
+               GLuint *zshort = (GLuint *)dst;
+               pipe_get_tile_raw(pipe, trans, 0, y, width, 1, dst, 0);
+               y += yStep;
+               /* Reverse into 24/8 */
+               for (j = 0; j < width; j++) {
+                  zshort[j] = (zshort[j] << 8) | (zshort[j] >> 24);
+               }
+               dst += dstStride;
+            }
+         }
+      }
+      else if (pformat == PIPE_FORMAT_S8_USCALED_Z24_UNORM ||
+               pformat == PIPE_FORMAT_X8Z24_UNORM) {
+         if (format == GL_DEPTH_COMPONENT) {
+            for (i = 0; i < height; i++) {
+               GLuint ztemp[MAX_WIDTH];
+               GLfloat zfloat[MAX_WIDTH];
+               const double scale = 1.0 / ((1 << 24) - 1);
+               pipe_get_tile_raw(pipe, trans, 0, y, width, 1, ztemp, 0);
+               y += yStep;
+               for (j = 0; j < width; j++) {
+                  zfloat[j] = (float) (scale * ((ztemp[j] >> 8) & 0xffffff));
+               }
+               _mesa_pack_depth_span(ctx, width, dst, type,
+                                     zfloat, &clippedPacking);
+               dst += dstStride;
+            }
+         }
+         else {
+            /* XXX: unreachable code -- should be before st_read_stencil_pixels */
+            assert(format == GL_DEPTH_STENCIL_EXT);
+            for (i = 0; i < height; i++) {
+               pipe_get_tile_raw(pipe, trans, 0, y, width, 1, dst, 0);
+               y += yStep;
+               dst += dstStride;
+            }
+         }
+      }
+      else if (pformat == PIPE_FORMAT_Z16_UNORM) {
+         for (i = 0; i < height; i++) {
+            GLushort ztemp[MAX_WIDTH];
+            GLfloat zfloat[MAX_WIDTH];
+            const double scale = 1.0 / 0xffff;
+            pipe_get_tile_raw(pipe, trans, 0, y, width, 1, ztemp, 0);
+            y += yStep;
+            for (j = 0; j < width; j++) {
+               zfloat[j] = (float) (scale * ztemp[j]);
+            }
+            _mesa_pack_depth_span(ctx, width, dst, type,
+                                  zfloat, &clippedPacking);
+            dst += dstStride;
+         }
+      }
+      else if (pformat == PIPE_FORMAT_Z32_UNORM) {
+         for (i = 0; i < height; i++) {
+            GLuint ztemp[MAX_WIDTH];
+            GLfloat zfloat[MAX_WIDTH];
+            const double scale = 1.0 / 0xffffffff;
+            pipe_get_tile_raw(pipe, trans, 0, y, width, 1, ztemp, 0);
+            y += yStep;
+            for (j = 0; j < width; j++) {
+               zfloat[j] = (float) (scale * ztemp[j]);
+            }
+            _mesa_pack_depth_span(ctx, width, dst, type,
+                                  zfloat, &clippedPacking);
+            dst += dstStride;
+         }
+      }
+      else {
+         /* RGBA format */
+         /* Do a row at a time to flip image data vertically */
+         for (i = 0; i < height; i++) {
+            pipe_get_tile_rgba_format(pipe, trans, 0, y, width, 1,
+                                      pformat, df);
+            y += yStep;
+            df += dfStride;
+            if (!dfStride) {
+               _mesa_pack_rgba_span_float(ctx, width, temp, format, type, dst,
+                                          &clippedPacking, transferOps);
+               dst += dstStride;
+            }
+         }
+      }
+   }
+
+   free(temp);
+
+   pipe->transfer_destroy(pipe, trans);
+
+   _mesa_unmap_pbo_dest(ctx, &clippedPacking);
+}
+
+
+void st_init_readpixels_functions(struct dd_function_table *functions)
+{
+   functions->ReadPixels = st_readpixels;
+}
diff --git a/mesalib/src/mesa/state_tracker/st_cb_texture.c b/mesalib/src/mesa/state_tracker/st_cb_texture.c
index 08c498b14..c3c4246d1 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_texture.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_texture.c
@@ -35,6 +35,7 @@
 #include "main/macros.h"
 #include "main/mipmap.h"
 #include "main/pack.h"
+#include "main/pbo.h"
 #include "main/pixeltransfer.h"
 #include "main/texcompress.h"
 #include "main/texfetch.h"
diff --git a/mesalib/src/mesa/swrast/s_bitmap.c b/mesalib/src/mesa/swrast/s_bitmap.c
index 9b52e9053..18f1c1866 100644
--- a/mesalib/src/mesa/swrast/s_bitmap.c
+++ b/mesalib/src/mesa/swrast/s_bitmap.c
@@ -1,222 +1,223 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.1

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/**

- * \file swrast/s_bitmap.c

- * \brief glBitmap rendering.

- * \author Brian Paul

- */

-

-#include "main/glheader.h"

-#include "main/bufferobj.h"

-#include "main/condrender.h"

-#include "main/image.h"

-#include "main/macros.h"

-

-#include "s_context.h"

-#include "s_span.h"

-

-

-

-/**

- * Render a bitmap.

- * Called via ctx->Driver.Bitmap()

- * All parameter error checking will have been done before this is called.

- */

-void

-_swrast_Bitmap( struct gl_context *ctx, GLint px, GLint py,

-		GLsizei width, GLsizei height,

-		const struct gl_pixelstore_attrib *unpack,

-		const GLubyte *bitmap )

-{

-   GLint row, col;

-   GLuint count = 0;

-   SWspan span;

-

-   ASSERT(ctx->RenderMode == GL_RENDER);

-

-   if (!_mesa_check_conditional_render(ctx))

-      return; /* don't draw */

-

-   bitmap = (const GLubyte *) _mesa_map_pbo_source(ctx, unpack, bitmap);

-   if (!bitmap)

-      return;

-

-   swrast_render_start(ctx);

-

-   if (SWRAST_CONTEXT(ctx)->NewState)

-      _swrast_validate_derived( ctx );

-

-   INIT_SPAN(span, GL_BITMAP);

-   span.end = width;

-   span.arrayMask = SPAN_XY;

-   _swrast_span_default_attribs(ctx, &span);

-

-   for (row = 0; row < height; row++) {

-      const GLubyte *src = (const GLubyte *) _mesa_image_address2d(unpack,

-                 bitmap, width, height, GL_COLOR_INDEX, GL_BITMAP, row, 0);

-

-      if (unpack->LsbFirst) {

-         /* Lsb first */

-         GLubyte mask = 1U << (unpack->SkipPixels & 0x7);

-         for (col = 0; col < width; col++) {

-            if (*src & mask) {

-               span.array->x[count] = px + col;

-               span.array->y[count] = py + row;

-               count++;

-            }

-            if (mask == 128U) {

-               src++;

-               mask = 1U;

-            }

-            else {

-               mask = mask << 1;

-            }

-         }

-

-         /* get ready for next row */

-         if (mask != 1)

-            src++;

-      }

-      else {

-         /* Msb first */

-         GLubyte mask = 128U >> (unpack->SkipPixels & 0x7);

-         for (col = 0; col < width; col++) {

-            if (*src & mask) {

-               span.array->x[count] = px + col;

-               span.array->y[count] = py + row;

-               count++;

-            }

-            if (mask == 1U) {

-               src++;

-               mask = 128U;

-            }

-            else {

-               mask = mask >> 1;

-            }

-         }

-

-         /* get ready for next row */

-         if (mask != 128)

-            src++;

-      }

-

-      if (count + width >= MAX_WIDTH || row + 1 == height) {

-         /* flush the span */

-         span.end = count;

-         _swrast_write_rgba_span(ctx, &span);

-         span.end = 0;

-         count = 0;

-      }

-   }

-

-   swrast_render_finish(ctx);

-

-   _mesa_unmap_pbo_source(ctx, unpack);

-}

-

-

-#if 0

-/*

- * XXX this is another way to implement Bitmap.  Use horizontal runs of

- * fragments, initializing the mask array to indicate which fragments to

- * draw or skip.

- */

-void

-_swrast_Bitmap( struct gl_context *ctx, GLint px, GLint py,

-		GLsizei width, GLsizei height,

-		const struct gl_pixelstore_attrib *unpack,

-		const GLubyte *bitmap )

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   GLint row, col;

-   SWspan span;

-

-   ASSERT(ctx->RenderMode == GL_RENDER);

-   ASSERT(bitmap);

-

-   swrast_render_start(ctx);

-

-   if (SWRAST_CONTEXT(ctx)->NewState)

-      _swrast_validate_derived( ctx );

-

-   INIT_SPAN(span, GL_BITMAP);

-   span.end = width;

-   span.arrayMask = SPAN_MASK;

-   _swrast_span_default_attribs(ctx, &span);

-

-   /*span.arrayMask |= SPAN_MASK;*/  /* we'll init span.mask[] */

-   span.x = px;

-   span.y = py;

-   /*span.end = width;*/

-

-   for (row=0; row<height; row++, span.y++) {

-      const GLubyte *src = (const GLubyte *) _mesa_image_address2d(unpack,

-                 bitmap, width, height, GL_COLOR_INDEX, GL_BITMAP, row, 0);

-

-      if (unpack->LsbFirst) {

-         /* Lsb first */

-         GLubyte mask = 1U << (unpack->SkipPixels & 0x7);

-         for (col=0; col<width; col++) {

-            span.array->mask[col] = (*src & mask) ? GL_TRUE : GL_FALSE;

-            if (mask == 128U) {

-               src++;

-               mask = 1U;

-            }

-            else {

-               mask = mask << 1;

-            }

-         }

-

-         _swrast_write_rgba_span(ctx, &span);

-

-         /* get ready for next row */

-         if (mask != 1)

-            src++;

-      }

-      else {

-         /* Msb first */

-         GLubyte mask = 128U >> (unpack->SkipPixels & 0x7);

-         for (col=0; col<width; col++) {

-            span.array->mask[col] = (*src & mask) ? GL_TRUE : GL_FALSE;

-            if (mask == 1U) {

-               src++;

-               mask = 128U;

-            }

-            else {

-               mask = mask >> 1;

-            }

-         }

-

-         _swrast_write_rgba_span(ctx, &span);

-

-         /* get ready for next row */

-         if (mask != 128)

-            src++;

-      }

-   }

-

-   swrast_render_finish(ctx);

-}

-#endif

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file swrast/s_bitmap.c
+ * \brief glBitmap rendering.
+ * \author Brian Paul
+ */
+
+#include "main/glheader.h"
+#include "main/bufferobj.h"
+#include "main/condrender.h"
+#include "main/image.h"
+#include "main/macros.h"
+#include "main/pbo.h"
+
+#include "s_context.h"
+#include "s_span.h"
+
+
+
+/**
+ * Render a bitmap.
+ * Called via ctx->Driver.Bitmap()
+ * All parameter error checking will have been done before this is called.
+ */
+void
+_swrast_Bitmap( struct gl_context *ctx, GLint px, GLint py,
+		GLsizei width, GLsizei height,
+		const struct gl_pixelstore_attrib *unpack,
+		const GLubyte *bitmap )
+{
+   GLint row, col;
+   GLuint count = 0;
+   SWspan span;
+
+   ASSERT(ctx->RenderMode == GL_RENDER);
+
+   if (!_mesa_check_conditional_render(ctx))
+      return; /* don't draw */
+
+   bitmap = (const GLubyte *) _mesa_map_pbo_source(ctx, unpack, bitmap);
+   if (!bitmap)
+      return;
+
+   swrast_render_start(ctx);
+
+   if (SWRAST_CONTEXT(ctx)->NewState)
+      _swrast_validate_derived( ctx );
+
+   INIT_SPAN(span, GL_BITMAP);
+   span.end = width;
+   span.arrayMask = SPAN_XY;
+   _swrast_span_default_attribs(ctx, &span);
+
+   for (row = 0; row < height; row++) {
+      const GLubyte *src = (const GLubyte *) _mesa_image_address2d(unpack,
+                 bitmap, width, height, GL_COLOR_INDEX, GL_BITMAP, row, 0);
+
+      if (unpack->LsbFirst) {
+         /* Lsb first */
+         GLubyte mask = 1U << (unpack->SkipPixels & 0x7);
+         for (col = 0; col < width; col++) {
+            if (*src & mask) {
+               span.array->x[count] = px + col;
+               span.array->y[count] = py + row;
+               count++;
+            }
+            if (mask == 128U) {
+               src++;
+               mask = 1U;
+            }
+            else {
+               mask = mask << 1;
+            }
+         }
+
+         /* get ready for next row */
+         if (mask != 1)
+            src++;
+      }
+      else {
+         /* Msb first */
+         GLubyte mask = 128U >> (unpack->SkipPixels & 0x7);
+         for (col = 0; col < width; col++) {
+            if (*src & mask) {
+               span.array->x[count] = px + col;
+               span.array->y[count] = py + row;
+               count++;
+            }
+            if (mask == 1U) {
+               src++;
+               mask = 128U;
+            }
+            else {
+               mask = mask >> 1;
+            }
+         }
+
+         /* get ready for next row */
+         if (mask != 128)
+            src++;
+      }
+
+      if (count + width >= MAX_WIDTH || row + 1 == height) {
+         /* flush the span */
+         span.end = count;
+         _swrast_write_rgba_span(ctx, &span);
+         span.end = 0;
+         count = 0;
+      }
+   }
+
+   swrast_render_finish(ctx);
+
+   _mesa_unmap_pbo_source(ctx, unpack);
+}
+
+
+#if 0
+/*
+ * XXX this is another way to implement Bitmap.  Use horizontal runs of
+ * fragments, initializing the mask array to indicate which fragments to
+ * draw or skip.
+ */
+void
+_swrast_Bitmap( struct gl_context *ctx, GLint px, GLint py,
+		GLsizei width, GLsizei height,
+		const struct gl_pixelstore_attrib *unpack,
+		const GLubyte *bitmap )
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   GLint row, col;
+   SWspan span;
+
+   ASSERT(ctx->RenderMode == GL_RENDER);
+   ASSERT(bitmap);
+
+   swrast_render_start(ctx);
+
+   if (SWRAST_CONTEXT(ctx)->NewState)
+      _swrast_validate_derived( ctx );
+
+   INIT_SPAN(span, GL_BITMAP);
+   span.end = width;
+   span.arrayMask = SPAN_MASK;
+   _swrast_span_default_attribs(ctx, &span);
+
+   /*span.arrayMask |= SPAN_MASK;*/  /* we'll init span.mask[] */
+   span.x = px;
+   span.y = py;
+   /*span.end = width;*/
+
+   for (row=0; row<height; row++, span.y++) {
+      const GLubyte *src = (const GLubyte *) _mesa_image_address2d(unpack,
+                 bitmap, width, height, GL_COLOR_INDEX, GL_BITMAP, row, 0);
+
+      if (unpack->LsbFirst) {
+         /* Lsb first */
+         GLubyte mask = 1U << (unpack->SkipPixels & 0x7);
+         for (col=0; col<width; col++) {
+            span.array->mask[col] = (*src & mask) ? GL_TRUE : GL_FALSE;
+            if (mask == 128U) {
+               src++;
+               mask = 1U;
+            }
+            else {
+               mask = mask << 1;
+            }
+         }
+
+         _swrast_write_rgba_span(ctx, &span);
+
+         /* get ready for next row */
+         if (mask != 1)
+            src++;
+      }
+      else {
+         /* Msb first */
+         GLubyte mask = 128U >> (unpack->SkipPixels & 0x7);
+         for (col=0; col<width; col++) {
+            span.array->mask[col] = (*src & mask) ? GL_TRUE : GL_FALSE;
+            if (mask == 1U) {
+               src++;
+               mask = 128U;
+            }
+            else {
+               mask = mask >> 1;
+            }
+         }
+
+         _swrast_write_rgba_span(ctx, &span);
+
+         /* get ready for next row */
+         if (mask != 128)
+            src++;
+      }
+   }
+
+   swrast_render_finish(ctx);
+}
+#endif
diff --git a/mesalib/src/mesa/swrast/s_drawpix.c b/mesalib/src/mesa/swrast/s_drawpix.c
index cca75784a..11c63457f 100644
--- a/mesalib/src/mesa/swrast/s_drawpix.c
+++ b/mesalib/src/mesa/swrast/s_drawpix.c
@@ -1,752 +1,753 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.1

- *

- * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-#include "main/glheader.h"

-#include "main/bufferobj.h"

-#include "main/condrender.h"

-#include "main/context.h"

-#include "main/image.h"

-#include "main/imports.h"

-#include "main/macros.h"

-#include "main/pack.h"

-#include "main/pixeltransfer.h"

-#include "main/state.h"

-

-#include "s_context.h"

-#include "s_span.h"

-#include "s_stencil.h"

-#include "s_zoom.h"

-

-

-

-/**

- * Try to do a fast and simple RGB(a) glDrawPixels.

- * Return:  GL_TRUE if success, GL_FALSE if slow path must be used instead

- */

-static GLboolean

-fast_draw_rgba_pixels(struct gl_context *ctx, GLint x, GLint y,

-                      GLsizei width, GLsizei height,

-                      GLenum format, GLenum type,

-                      const struct gl_pixelstore_attrib *userUnpack,

-                      const GLvoid *pixels)

-{

-   const GLint imgX = x, imgY = y;

-   struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];

-   GLenum rbType;

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   SWspan span;

-   GLboolean simpleZoom;

-   GLint yStep;  /* +1 or -1 */

-   struct gl_pixelstore_attrib unpack;

-   GLint destX, destY, drawWidth, drawHeight; /* post clipping */

-

-   if (!rb)

-      return GL_TRUE; /* no-op */

-

-   rbType = rb->DataType;

-

-   if ((swrast->_RasterMask & ~CLIP_BIT) ||

-       ctx->Texture._EnabledCoordUnits ||

-       userUnpack->SwapBytes ||

-       ctx->_ImageTransferState) {

-      /* can't handle any of those conditions */

-      return GL_FALSE;

-   }

-

-   INIT_SPAN(span, GL_BITMAP);

-   span.arrayMask = SPAN_RGBA;

-   span.arrayAttribs = FRAG_BIT_COL0;

-   _swrast_span_default_attribs(ctx, &span);

-

-   /* copy input params since clipping may change them */

-   unpack = *userUnpack;

-   destX = x;

-   destY = y;

-   drawWidth = width;

-   drawHeight = height;

-

-   /* check for simple zooming and clipping */

-   if (ctx->Pixel.ZoomX == 1.0F &&

-       (ctx->Pixel.ZoomY == 1.0F || ctx->Pixel.ZoomY == -1.0F)) {

-      if (!_mesa_clip_drawpixels(ctx, &destX, &destY,

-                                 &drawWidth, &drawHeight, &unpack)) {

-         /* image was completely clipped: no-op, all done */

-         return GL_TRUE;

-      }

-      simpleZoom = GL_TRUE;

-      yStep = (GLint) ctx->Pixel.ZoomY;

-      ASSERT(yStep == 1 || yStep == -1);

-   }

-   else {

-      /* non-simple zooming */

-      simpleZoom = GL_FALSE;

-      yStep = 1;

-      if (unpack.RowLength == 0)

-         unpack.RowLength = width;

-   }

-

-   /*

-    * Ready to draw!

-    */

-

-   if (format == GL_RGBA && type == rbType) {

-      const GLubyte *src

-         = (const GLubyte *) _mesa_image_address2d(&unpack, pixels, width,

-                                                   height, format, type, 0, 0);

-      const GLint srcStride = _mesa_image_row_stride(&unpack, width,

-                                                     format, type);

-      if (simpleZoom) {

-         GLint row;

-         for (row = 0; row < drawHeight; row++) {

-            rb->PutRow(ctx, rb, drawWidth, destX, destY, src, NULL);

-            src += srcStride;

-            destY += yStep;

-         }

-      }

-      else {

-         /* with zooming */

-         GLint row;

-         for (row = 0; row < drawHeight; row++) {

-            span.x = destX;

-            span.y = destY + row;

-            span.end = drawWidth;

-            span.array->ChanType = rbType;

-            _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span, src);

-            src += srcStride;

-         }

-         span.array->ChanType = CHAN_TYPE;

-      }

-      return GL_TRUE;

-   }

-

-   if (format == GL_RGB && type == rbType) {

-      const GLubyte *src

-         = (const GLubyte *) _mesa_image_address2d(&unpack, pixels, width,

-                                                   height, format, type, 0, 0);

-      const GLint srcStride = _mesa_image_row_stride(&unpack, width,

-                                                     format, type);

-      if (simpleZoom) {

-         GLint row;

-         for (row = 0; row < drawHeight; row++) {

-            rb->PutRowRGB(ctx, rb, drawWidth, destX, destY, src, NULL);

-            src += srcStride;

-            destY += yStep;

-         }

-      }

-      else {

-         /* with zooming */

-         GLint row;

-         for (row = 0; row < drawHeight; row++) {

-            span.x = destX;

-            span.y = destY;

-            span.end = drawWidth;

-            span.array->ChanType = rbType;

-            _swrast_write_zoomed_rgb_span(ctx, imgX, imgY, &span, src);

-            src += srcStride;

-            destY++;

-         }

-         span.array->ChanType = CHAN_TYPE;

-      }

-      return GL_TRUE;

-   }

-

-   /* Remaining cases haven't been tested with alignment != 1 */

-   if (userUnpack->Alignment != 1)

-      return GL_FALSE;

-

-   if (format == GL_LUMINANCE && type == CHAN_TYPE && rbType == CHAN_TYPE) {

-      const GLchan *src = (const GLchan *) pixels

-         + (unpack.SkipRows * unpack.RowLength + unpack.SkipPixels);

-      if (simpleZoom) {

-         /* no zooming */

-         GLint row;

-         ASSERT(drawWidth <= MAX_WIDTH);

-         for (row = 0; row < drawHeight; row++) {

-            GLchan rgb[MAX_WIDTH][3];

-            GLint i;

-            for (i = 0;i<drawWidth;i++) {

-               rgb[i][0] = src[i];

-               rgb[i][1] = src[i];

-               rgb[i][2] = src[i];

-            }

-            rb->PutRowRGB(ctx, rb, drawWidth, destX, destY, rgb, NULL);

-            src += unpack.RowLength;

-            destY += yStep;

-         }

-      }

-      else {

-         /* with zooming */

-         GLint row;

-         ASSERT(drawWidth <= MAX_WIDTH);

-         for (row = 0; row < drawHeight; row++) {

-            GLchan rgb[MAX_WIDTH][3];

-            GLint i;

-            for (i = 0;i<drawWidth;i++) {

-               rgb[i][0] = src[i];

-               rgb[i][1] = src[i];

-               rgb[i][2] = src[i];

-            }

-            span.x = destX;

-            span.y = destY;

-            span.end = drawWidth;

-            _swrast_write_zoomed_rgb_span(ctx, imgX, imgY, &span, rgb);

-            src += unpack.RowLength;

-            destY++;

-         }

-      }

-      return GL_TRUE;

-   }

-

-   if (format == GL_LUMINANCE_ALPHA && type == CHAN_TYPE && rbType == CHAN_TYPE) {

-      const GLchan *src = (const GLchan *) pixels

-         + (unpack.SkipRows * unpack.RowLength + unpack.SkipPixels)*2;

-      if (simpleZoom) {

-         GLint row;

-         ASSERT(drawWidth <= MAX_WIDTH);

-         for (row = 0; row < drawHeight; row++) {

-            GLint i;

-            const GLchan *ptr = src;

-            for (i = 0;i<drawWidth;i++) {

-               span.array->rgba[i][0] = *ptr;

-               span.array->rgba[i][1] = *ptr;

-               span.array->rgba[i][2] = *ptr++;

-               span.array->rgba[i][3] = *ptr++;

-            }

-            rb->PutRow(ctx, rb, drawWidth, destX, destY,

-                       span.array->rgba, NULL);

-            src += unpack.RowLength*2;

-            destY += yStep;

-         }

-      }

-      else {

-         /* with zooming */

-         GLint row;

-         ASSERT(drawWidth <= MAX_WIDTH);

-         for (row = 0; row < drawHeight; row++) {

-            const GLchan *ptr = src;

-            GLint i;

-            for (i = 0;i<drawWidth;i++) {

-               span.array->rgba[i][0] = *ptr;

-               span.array->rgba[i][1] = *ptr;

-               span.array->rgba[i][2] = *ptr++;

-               span.array->rgba[i][3] = *ptr++;

-            }

-            span.x = destX;

-            span.y = destY;

-            span.end = drawWidth;

-            _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span,

-                                           span.array->rgba);

-            src += unpack.RowLength*2;

-            destY++;

-         }

-      }

-      return GL_TRUE;

-   }

-

-   if (format == GL_COLOR_INDEX && type == GL_UNSIGNED_BYTE) {

-      const GLubyte *src = (const GLubyte *) pixels

-         + unpack.SkipRows * unpack.RowLength + unpack.SkipPixels;

-      if (rbType == GL_UNSIGNED_BYTE) {

-         /* convert ubyte/CI data to ubyte/RGBA */

-         if (simpleZoom) {

-            GLint row;

-            for (row = 0; row < drawHeight; row++) {

-               ASSERT(drawWidth <= MAX_WIDTH);

-               _mesa_map_ci8_to_rgba8(ctx, drawWidth, src,

-                                      span.array->rgba8);

-               rb->PutRow(ctx, rb, drawWidth, destX, destY,

-                          span.array->rgba8, NULL);

-               src += unpack.RowLength;

-               destY += yStep;

-            }

-         }

-         else {

-            /* ubyte/CI to ubyte/RGBA with zooming */

-            GLint row;

-            for (row = 0; row < drawHeight; row++) {

-               ASSERT(drawWidth <= MAX_WIDTH);

-               _mesa_map_ci8_to_rgba8(ctx, drawWidth, src,

-                                      span.array->rgba8);

-               span.x = destX;

-               span.y = destY;

-               span.end = drawWidth;

-               _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span,

-                                              span.array->rgba8);

-               src += unpack.RowLength;

-               destY++;

-            }

-         }

-         return GL_TRUE;

-      }

-   }

-

-   /* can't handle this pixel format and/or data type */

-   return GL_FALSE;

-}

-

-

-

-/*

- * Draw stencil image.

- */

-static void

-draw_stencil_pixels( struct gl_context *ctx, GLint x, GLint y,

-                     GLsizei width, GLsizei height,

-                     GLenum type,

-                     const struct gl_pixelstore_attrib *unpack,

-                     const GLvoid *pixels )

-{

-   const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;

-   GLint skipPixels;

-

-   /* if width > MAX_WIDTH, have to process image in chunks */

-   skipPixels = 0;

-   while (skipPixels < width) {

-      const GLint spanX = x + skipPixels;

-      const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);

-      GLint row;

-      for (row = 0; row < height; row++) {

-         const GLint spanY = y + row;

-         GLstencil values[MAX_WIDTH];

-         GLenum destType = (sizeof(GLstencil) == sizeof(GLubyte))

-                         ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT;

-         const GLvoid *source = _mesa_image_address2d(unpack, pixels,

-                                                      width, height,

-                                                      GL_COLOR_INDEX, type,

-                                                      row, skipPixels);

-         _mesa_unpack_stencil_span(ctx, spanWidth, destType, values,

-                                   type, source, unpack,

-                                   ctx->_ImageTransferState);

-         if (zoom) {

-            _swrast_write_zoomed_stencil_span(ctx, x, y, spanWidth,

-                                              spanX, spanY, values);

-         }

-         else {

-            _swrast_write_stencil_span(ctx, spanWidth, spanX, spanY, values);

-         }

-      }

-      skipPixels += spanWidth;

-   }

-}

-

-

-/*

- * Draw depth image.

- */

-static void

-draw_depth_pixels( struct gl_context *ctx, GLint x, GLint y,

-                   GLsizei width, GLsizei height,

-                   GLenum type,

-                   const struct gl_pixelstore_attrib *unpack,

-                   const GLvoid *pixels )

-{

-   const GLboolean scaleOrBias

-      = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;

-   const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;

-   SWspan span;

-

-   INIT_SPAN(span, GL_BITMAP);

-   span.arrayMask = SPAN_Z;

-   _swrast_span_default_attribs(ctx, &span);

-

-   if (type == GL_UNSIGNED_SHORT

-       && ctx->DrawBuffer->Visual.depthBits == 16

-       && !scaleOrBias

-       && !zoom

-       && width <= MAX_WIDTH

-       && !unpack->SwapBytes) {

-      /* Special case: directly write 16-bit depth values */

-      GLint row;

-      for (row = 0; row < height; row++) {

-         const GLushort *zSrc = (const GLushort *)

-            _mesa_image_address2d(unpack, pixels, width, height,

-                                  GL_DEPTH_COMPONENT, type, row, 0);

-         GLint i;

-         for (i = 0; i < width; i++)

-            span.array->z[i] = zSrc[i];

-         span.x = x;

-         span.y = y + row;

-         span.end = width;

-         _swrast_write_rgba_span(ctx, &span);

-      }

-   }

-   else if (type == GL_UNSIGNED_INT

-            && !scaleOrBias

-            && !zoom

-            && width <= MAX_WIDTH

-            && !unpack->SwapBytes) {

-      /* Special case: shift 32-bit values down to Visual.depthBits */

-      const GLint shift = 32 - ctx->DrawBuffer->Visual.depthBits;

-      GLint row;

-      for (row = 0; row < height; row++) {

-         const GLuint *zSrc = (const GLuint *)

-            _mesa_image_address2d(unpack, pixels, width, height,

-                                  GL_DEPTH_COMPONENT, type, row, 0);

-         if (shift == 0) {

-            memcpy(span.array->z, zSrc, width * sizeof(GLuint));

-         }

-         else {

-            GLint col;

-            for (col = 0; col < width; col++)

-               span.array->z[col] = zSrc[col] >> shift;

-         }

-         span.x = x;

-         span.y = y + row;

-         span.end = width;

-         _swrast_write_rgba_span(ctx, &span);

-      }

-   }

-   else {

-      /* General case */

-      const GLuint depthMax = ctx->DrawBuffer->_DepthMax;

-      GLint skipPixels = 0;

-

-      /* in case width > MAX_WIDTH do the copy in chunks */

-      while (skipPixels < width) {

-         const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);

-         GLint row;

-         ASSERT(span.end <= MAX_WIDTH);

-         for (row = 0; row < height; row++) {

-            const GLvoid *zSrc = _mesa_image_address2d(unpack,

-                                                      pixels, width, height,

-                                                      GL_DEPTH_COMPONENT, type,

-                                                      row, skipPixels);

-

-            /* Set these for each row since the _swrast_write_* function may

-             * change them while clipping.

-             */

-            span.x = x + skipPixels;

-            span.y = y + row;

-            span.end = spanWidth;

-

-            _mesa_unpack_depth_span(ctx, spanWidth,

-                                    GL_UNSIGNED_INT, span.array->z, depthMax,

-                                    type, zSrc, unpack);

-            if (zoom) {

-               _swrast_write_zoomed_depth_span(ctx, x, y, &span);

-            }

-            else {

-               _swrast_write_rgba_span(ctx, &span);

-            }

-         }

-         skipPixels += spanWidth;

-      }

-   }

-}

-

-

-

-/**

- * Draw RGBA image.

- */

-static void

-draw_rgba_pixels( struct gl_context *ctx, GLint x, GLint y,

-                  GLsizei width, GLsizei height,

-                  GLenum format, GLenum type,

-                  const struct gl_pixelstore_attrib *unpack,

-                  const GLvoid *pixels )

-{

-   const GLint imgX = x, imgY = y;

-   const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;

-   GLfloat *convImage = NULL;

-   GLbitfield transferOps = ctx->_ImageTransferState;

-   SWspan span;

-

-   /* Try an optimized glDrawPixels first */

-   if (fast_draw_rgba_pixels(ctx, x, y, width, height, format, type,

-                             unpack, pixels)) {

-      return;

-   }

-

-   INIT_SPAN(span, GL_BITMAP);

-   _swrast_span_default_attribs(ctx, &span);

-   span.arrayMask = SPAN_RGBA;

-   span.arrayAttribs = FRAG_BIT_COL0; /* we're fill in COL0 attrib values */

-

-   if (ctx->DrawBuffer->_NumColorDrawBuffers > 0 &&

-       ctx->DrawBuffer->_ColorDrawBuffers[0]->DataType != GL_FLOAT &&

-       ctx->Color.ClampFragmentColor != GL_FALSE) {

-      /* need to clamp colors before applying fragment ops */

-      transferOps |= IMAGE_CLAMP_BIT;

-   }

-

-   /*

-    * General solution

-    */

-   {

-      const GLbitfield interpMask = span.interpMask;

-      const GLbitfield arrayMask = span.arrayMask;

-      const GLint srcStride

-         = _mesa_image_row_stride(unpack, width, format, type);

-      GLint skipPixels = 0;

-      /* use span array for temp color storage */

-      GLfloat *rgba = (GLfloat *) span.array->attribs[FRAG_ATTRIB_COL0];

-

-      /* if the span is wider than MAX_WIDTH we have to do it in chunks */

-      while (skipPixels < width) {

-         const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);

-         const GLubyte *source

-            = (const GLubyte *) _mesa_image_address2d(unpack, pixels,

-                                                      width, height, format,

-                                                      type, 0, skipPixels);

-         GLint row;

-

-         for (row = 0; row < height; row++) {

-            /* get image row as float/RGBA */

-            _mesa_unpack_color_span_float(ctx, spanWidth, GL_RGBA, rgba,

-                                     format, type, source, unpack,

-                                     transferOps);

-	    /* Set these for each row since the _swrast_write_* functions

-	     * may change them while clipping/rendering.

-	     */

-	    span.array->ChanType = GL_FLOAT;

-	    span.x = x + skipPixels;

-	    span.y = y + row;

-	    span.end = spanWidth;

-	    span.arrayMask = arrayMask;

-	    span.interpMask = interpMask;

-	    if (zoom) {

-	       _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span, rgba);

-	    }

-	    else {

-	       _swrast_write_rgba_span(ctx, &span);

-	    }

-

-            source += srcStride;

-         } /* for row */

-

-         skipPixels += spanWidth;

-      } /* while skipPixels < width */

-

-      /* XXX this is ugly/temporary, to undo above change */

-      span.array->ChanType = CHAN_TYPE;

-   }

-

-   if (convImage) {

-      free(convImage);

-   }

-}

-

-

-/**

- * This is a bit different from drawing GL_DEPTH_COMPONENT pixels.

- * The only per-pixel operations that apply are depth scale/bias,

- * stencil offset/shift, GL_DEPTH_WRITEMASK and GL_STENCIL_WRITEMASK,

- * and pixel zoom.

- * Also, only the depth buffer and stencil buffers are touched, not the

- * color buffer(s).

- */

-static void

-draw_depth_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,

-                          GLsizei width, GLsizei height, GLenum type,

-                          const struct gl_pixelstore_attrib *unpack,

-                          const GLvoid *pixels)

-{

-   const GLint imgX = x, imgY = y;

-   const GLboolean scaleOrBias

-      = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;

-   const GLuint depthMax = ctx->DrawBuffer->_DepthMax;

-   const GLuint stencilMask = ctx->Stencil.WriteMask[0];

-   const GLuint stencilType = (STENCIL_BITS == 8) ? 

-      GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT;

-   const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;

-   struct gl_renderbuffer *depthRb, *stencilRb;

-   struct gl_pixelstore_attrib clippedUnpack = *unpack;

-

-   if (!zoom) {

-      if (!_mesa_clip_drawpixels(ctx, &x, &y, &width, &height,

-                                 &clippedUnpack)) {

-         /* totally clipped */

-         return;

-      }

-   }

-   

-   depthRb = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;

-   stencilRb = ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;

-   ASSERT(depthRb);

-   ASSERT(stencilRb);

-

-   if (depthRb->_BaseFormat == GL_DEPTH_STENCIL_EXT &&

-       stencilRb->_BaseFormat == GL_DEPTH_STENCIL_EXT &&

-       depthRb == stencilRb &&

-       !scaleOrBias &&

-       !zoom &&

-       ctx->Depth.Mask &&

-       (stencilMask & 0xff) == 0xff) {

-      /* This is the ideal case.

-       * Drawing GL_DEPTH_STENCIL pixels into a combined depth/stencil buffer.

-       * Plus, no pixel transfer ops, zooming, or masking needed.

-       */

-      GLint i;

-      for (i = 0; i < height; i++) {

-         const GLuint *src = (const GLuint *) 

-            _mesa_image_address2d(&clippedUnpack, pixels, width, height,

-                                  GL_DEPTH_STENCIL_EXT, type, i, 0);

-         depthRb->PutRow(ctx, depthRb, width, x, y + i, src, NULL);

-      }

-   }

-   else {

-      /* sub-optimal cases:

-       * Separate depth/stencil buffers, or pixel transfer ops required.

-       */

-      /* XXX need to handle very wide images (skippixels) */

-      GLint i;

-

-      depthRb = ctx->DrawBuffer->_DepthBuffer;

-      stencilRb = ctx->DrawBuffer->_StencilBuffer;

-

-      for (i = 0; i < height; i++) {

-         const GLuint *depthStencilSrc = (const GLuint *)

-            _mesa_image_address2d(&clippedUnpack, pixels, width, height,

-                                  GL_DEPTH_STENCIL_EXT, type, i, 0);

-

-         if (ctx->Depth.Mask) {

-            if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 24) {

-               /* fast path 24-bit zbuffer */

-               GLuint zValues[MAX_WIDTH];

-               GLint j;

-               ASSERT(depthRb->DataType == GL_UNSIGNED_INT);

-               for (j = 0; j < width; j++) {

-                  zValues[j] = depthStencilSrc[j] >> 8;

-               }

-               if (zoom)

-                  _swrast_write_zoomed_z_span(ctx, imgX, imgY, width,

-                                              x, y + i, zValues);

-               else

-                  depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);

-            }

-            else if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 16) {

-               /* fast path 16-bit zbuffer */

-               GLushort zValues[MAX_WIDTH];

-               GLint j;

-               ASSERT(depthRb->DataType == GL_UNSIGNED_SHORT);

-               for (j = 0; j < width; j++) {

-                  zValues[j] = depthStencilSrc[j] >> 16;

-               }

-               if (zoom)

-                  _swrast_write_zoomed_z_span(ctx, imgX, imgY, width,

-                                              x, y + i, zValues);

-               else

-                  depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);

-            }

-            else {

-               /* general case */

-               GLuint zValues[MAX_WIDTH];  /* 16 or 32-bit Z value storage */

-               _mesa_unpack_depth_span(ctx, width,

-                                       depthRb->DataType, zValues, depthMax,

-                                       type, depthStencilSrc, &clippedUnpack);

-               if (zoom) {

-                  _swrast_write_zoomed_z_span(ctx, imgX, imgY, width, x,

-                                              y + i, zValues);

-               }

-               else {

-                  depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);

-               }

-            }

-         }

-

-         if (stencilMask != 0x0) {

-            GLstencil stencilValues[MAX_WIDTH];

-            /* get stencil values, with shift/offset/mapping */

-            _mesa_unpack_stencil_span(ctx, width, stencilType, stencilValues,

-                                      type, depthStencilSrc, &clippedUnpack,

-                                      ctx->_ImageTransferState);

-            if (zoom)

-               _swrast_write_zoomed_stencil_span(ctx, imgX, imgY, width,

-                                                  x, y + i, stencilValues);

-            else

-               _swrast_write_stencil_span(ctx, width, x, y + i, stencilValues);

-         }

-      }

-   }

-}

-

-

-/**

- * Execute software-based glDrawPixels.

- * By time we get here, all error checking will have been done.

- */

-void

-_swrast_DrawPixels( struct gl_context *ctx,

-		    GLint x, GLint y,

-		    GLsizei width, GLsizei height,

-		    GLenum format, GLenum type,

-		    const struct gl_pixelstore_attrib *unpack,

-		    const GLvoid *pixels )

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   GLboolean save_vp_override = ctx->VertexProgram._Overriden;

-

-   if (!_mesa_check_conditional_render(ctx))

-      return; /* don't draw */

-

-   /* We are creating fragments directly, without going through vertex

-    * programs.

-    *

-    * This override flag tells the fragment processing code that its input

-    * comes from a non-standard source, and it may therefore not rely on

-    * optimizations that assume e.g. constant color if there is no color

-    * vertex array.

-    */

-   _mesa_set_vp_override(ctx, GL_TRUE);

-

-   swrast_render_start(ctx);

-

-   if (ctx->NewState)

-      _mesa_update_state(ctx);

-

-   if (swrast->NewState)

-      _swrast_validate_derived( ctx );

-

-   pixels = _mesa_map_pbo_source(ctx, unpack, pixels);

-   if (!pixels) {

-      swrast_render_finish(ctx);

-      _mesa_set_vp_override(ctx, save_vp_override);

-      return;

-   }

-

-   /*

-    * By time we get here, all error checking should have been done.

-    */

-   switch (format) {

-   case GL_STENCIL_INDEX:

-      draw_stencil_pixels( ctx, x, y, width, height, type, unpack, pixels );

-      break;

-   case GL_DEPTH_COMPONENT:

-      draw_depth_pixels( ctx, x, y, width, height, type, unpack, pixels );

-      break;

-   case GL_DEPTH_STENCIL_EXT:

-      draw_depth_stencil_pixels(ctx, x, y, width, height, type, unpack, pixels);

-      break;

-   default:

-      /* all other formats should be color formats */

-      draw_rgba_pixels(ctx, x, y, width, height, format, type, unpack, pixels);

-   }

-

-   swrast_render_finish(ctx);

-   _mesa_set_vp_override(ctx, save_vp_override);

-

-   _mesa_unmap_pbo_source(ctx, unpack);

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "main/glheader.h"
+#include "main/bufferobj.h"
+#include "main/condrender.h"
+#include "main/context.h"
+#include "main/image.h"
+#include "main/imports.h"
+#include "main/macros.h"
+#include "main/pack.h"
+#include "main/pbo.h"
+#include "main/pixeltransfer.h"
+#include "main/state.h"
+
+#include "s_context.h"
+#include "s_span.h"
+#include "s_stencil.h"
+#include "s_zoom.h"
+
+
+
+/**
+ * Try to do a fast and simple RGB(a) glDrawPixels.
+ * Return:  GL_TRUE if success, GL_FALSE if slow path must be used instead
+ */
+static GLboolean
+fast_draw_rgba_pixels(struct gl_context *ctx, GLint x, GLint y,
+                      GLsizei width, GLsizei height,
+                      GLenum format, GLenum type,
+                      const struct gl_pixelstore_attrib *userUnpack,
+                      const GLvoid *pixels)
+{
+   const GLint imgX = x, imgY = y;
+   struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
+   GLenum rbType;
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   SWspan span;
+   GLboolean simpleZoom;
+   GLint yStep;  /* +1 or -1 */
+   struct gl_pixelstore_attrib unpack;
+   GLint destX, destY, drawWidth, drawHeight; /* post clipping */
+
+   if (!rb)
+      return GL_TRUE; /* no-op */
+
+   rbType = rb->DataType;
+
+   if ((swrast->_RasterMask & ~CLIP_BIT) ||
+       ctx->Texture._EnabledCoordUnits ||
+       userUnpack->SwapBytes ||
+       ctx->_ImageTransferState) {
+      /* can't handle any of those conditions */
+      return GL_FALSE;
+   }
+
+   INIT_SPAN(span, GL_BITMAP);
+   span.arrayMask = SPAN_RGBA;
+   span.arrayAttribs = FRAG_BIT_COL0;
+   _swrast_span_default_attribs(ctx, &span);
+
+   /* copy input params since clipping may change them */
+   unpack = *userUnpack;
+   destX = x;
+   destY = y;
+   drawWidth = width;
+   drawHeight = height;
+
+   /* check for simple zooming and clipping */
+   if (ctx->Pixel.ZoomX == 1.0F &&
+       (ctx->Pixel.ZoomY == 1.0F || ctx->Pixel.ZoomY == -1.0F)) {
+      if (!_mesa_clip_drawpixels(ctx, &destX, &destY,
+                                 &drawWidth, &drawHeight, &unpack)) {
+         /* image was completely clipped: no-op, all done */
+         return GL_TRUE;
+      }
+      simpleZoom = GL_TRUE;
+      yStep = (GLint) ctx->Pixel.ZoomY;
+      ASSERT(yStep == 1 || yStep == -1);
+   }
+   else {
+      /* non-simple zooming */
+      simpleZoom = GL_FALSE;
+      yStep = 1;
+      if (unpack.RowLength == 0)
+         unpack.RowLength = width;
+   }
+
+   /*
+    * Ready to draw!
+    */
+
+   if (format == GL_RGBA && type == rbType) {
+      const GLubyte *src
+         = (const GLubyte *) _mesa_image_address2d(&unpack, pixels, width,
+                                                   height, format, type, 0, 0);
+      const GLint srcStride = _mesa_image_row_stride(&unpack, width,
+                                                     format, type);
+      if (simpleZoom) {
+         GLint row;
+         for (row = 0; row < drawHeight; row++) {
+            rb->PutRow(ctx, rb, drawWidth, destX, destY, src, NULL);
+            src += srcStride;
+            destY += yStep;
+         }
+      }
+      else {
+         /* with zooming */
+         GLint row;
+         for (row = 0; row < drawHeight; row++) {
+            span.x = destX;
+            span.y = destY + row;
+            span.end = drawWidth;
+            span.array->ChanType = rbType;
+            _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span, src);
+            src += srcStride;
+         }
+         span.array->ChanType = CHAN_TYPE;
+      }
+      return GL_TRUE;
+   }
+
+   if (format == GL_RGB && type == rbType) {
+      const GLubyte *src
+         = (const GLubyte *) _mesa_image_address2d(&unpack, pixels, width,
+                                                   height, format, type, 0, 0);
+      const GLint srcStride = _mesa_image_row_stride(&unpack, width,
+                                                     format, type);
+      if (simpleZoom) {
+         GLint row;
+         for (row = 0; row < drawHeight; row++) {
+            rb->PutRowRGB(ctx, rb, drawWidth, destX, destY, src, NULL);
+            src += srcStride;
+            destY += yStep;
+         }
+      }
+      else {
+         /* with zooming */
+         GLint row;
+         for (row = 0; row < drawHeight; row++) {
+            span.x = destX;
+            span.y = destY;
+            span.end = drawWidth;
+            span.array->ChanType = rbType;
+            _swrast_write_zoomed_rgb_span(ctx, imgX, imgY, &span, src);
+            src += srcStride;
+            destY++;
+         }
+         span.array->ChanType = CHAN_TYPE;
+      }
+      return GL_TRUE;
+   }
+
+   /* Remaining cases haven't been tested with alignment != 1 */
+   if (userUnpack->Alignment != 1)
+      return GL_FALSE;
+
+   if (format == GL_LUMINANCE && type == CHAN_TYPE && rbType == CHAN_TYPE) {
+      const GLchan *src = (const GLchan *) pixels
+         + (unpack.SkipRows * unpack.RowLength + unpack.SkipPixels);
+      if (simpleZoom) {
+         /* no zooming */
+         GLint row;
+         ASSERT(drawWidth <= MAX_WIDTH);
+         for (row = 0; row < drawHeight; row++) {
+            GLchan rgb[MAX_WIDTH][3];
+            GLint i;
+            for (i = 0;i<drawWidth;i++) {
+               rgb[i][0] = src[i];
+               rgb[i][1] = src[i];
+               rgb[i][2] = src[i];
+            }
+            rb->PutRowRGB(ctx, rb, drawWidth, destX, destY, rgb, NULL);
+            src += unpack.RowLength;
+            destY += yStep;
+         }
+      }
+      else {
+         /* with zooming */
+         GLint row;
+         ASSERT(drawWidth <= MAX_WIDTH);
+         for (row = 0; row < drawHeight; row++) {
+            GLchan rgb[MAX_WIDTH][3];
+            GLint i;
+            for (i = 0;i<drawWidth;i++) {
+               rgb[i][0] = src[i];
+               rgb[i][1] = src[i];
+               rgb[i][2] = src[i];
+            }
+            span.x = destX;
+            span.y = destY;
+            span.end = drawWidth;
+            _swrast_write_zoomed_rgb_span(ctx, imgX, imgY, &span, rgb);
+            src += unpack.RowLength;
+            destY++;
+         }
+      }
+      return GL_TRUE;
+   }
+
+   if (format == GL_LUMINANCE_ALPHA && type == CHAN_TYPE && rbType == CHAN_TYPE) {
+      const GLchan *src = (const GLchan *) pixels
+         + (unpack.SkipRows * unpack.RowLength + unpack.SkipPixels)*2;
+      if (simpleZoom) {
+         GLint row;
+         ASSERT(drawWidth <= MAX_WIDTH);
+         for (row = 0; row < drawHeight; row++) {
+            GLint i;
+            const GLchan *ptr = src;
+            for (i = 0;i<drawWidth;i++) {
+               span.array->rgba[i][0] = *ptr;
+               span.array->rgba[i][1] = *ptr;
+               span.array->rgba[i][2] = *ptr++;
+               span.array->rgba[i][3] = *ptr++;
+            }
+            rb->PutRow(ctx, rb, drawWidth, destX, destY,
+                       span.array->rgba, NULL);
+            src += unpack.RowLength*2;
+            destY += yStep;
+         }
+      }
+      else {
+         /* with zooming */
+         GLint row;
+         ASSERT(drawWidth <= MAX_WIDTH);
+         for (row = 0; row < drawHeight; row++) {
+            const GLchan *ptr = src;
+            GLint i;
+            for (i = 0;i<drawWidth;i++) {
+               span.array->rgba[i][0] = *ptr;
+               span.array->rgba[i][1] = *ptr;
+               span.array->rgba[i][2] = *ptr++;
+               span.array->rgba[i][3] = *ptr++;
+            }
+            span.x = destX;
+            span.y = destY;
+            span.end = drawWidth;
+            _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span,
+                                           span.array->rgba);
+            src += unpack.RowLength*2;
+            destY++;
+         }
+      }
+      return GL_TRUE;
+   }
+
+   if (format == GL_COLOR_INDEX && type == GL_UNSIGNED_BYTE) {
+      const GLubyte *src = (const GLubyte *) pixels
+         + unpack.SkipRows * unpack.RowLength + unpack.SkipPixels;
+      if (rbType == GL_UNSIGNED_BYTE) {
+         /* convert ubyte/CI data to ubyte/RGBA */
+         if (simpleZoom) {
+            GLint row;
+            for (row = 0; row < drawHeight; row++) {
+               ASSERT(drawWidth <= MAX_WIDTH);
+               _mesa_map_ci8_to_rgba8(ctx, drawWidth, src,
+                                      span.array->rgba8);
+               rb->PutRow(ctx, rb, drawWidth, destX, destY,
+                          span.array->rgba8, NULL);
+               src += unpack.RowLength;
+               destY += yStep;
+            }
+         }
+         else {
+            /* ubyte/CI to ubyte/RGBA with zooming */
+            GLint row;
+            for (row = 0; row < drawHeight; row++) {
+               ASSERT(drawWidth <= MAX_WIDTH);
+               _mesa_map_ci8_to_rgba8(ctx, drawWidth, src,
+                                      span.array->rgba8);
+               span.x = destX;
+               span.y = destY;
+               span.end = drawWidth;
+               _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span,
+                                              span.array->rgba8);
+               src += unpack.RowLength;
+               destY++;
+            }
+         }
+         return GL_TRUE;
+      }
+   }
+
+   /* can't handle this pixel format and/or data type */
+   return GL_FALSE;
+}
+
+
+
+/*
+ * Draw stencil image.
+ */
+static void
+draw_stencil_pixels( struct gl_context *ctx, GLint x, GLint y,
+                     GLsizei width, GLsizei height,
+                     GLenum type,
+                     const struct gl_pixelstore_attrib *unpack,
+                     const GLvoid *pixels )
+{
+   const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
+   GLint skipPixels;
+
+   /* if width > MAX_WIDTH, have to process image in chunks */
+   skipPixels = 0;
+   while (skipPixels < width) {
+      const GLint spanX = x + skipPixels;
+      const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);
+      GLint row;
+      for (row = 0; row < height; row++) {
+         const GLint spanY = y + row;
+         GLstencil values[MAX_WIDTH];
+         GLenum destType = (sizeof(GLstencil) == sizeof(GLubyte))
+                         ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT;
+         const GLvoid *source = _mesa_image_address2d(unpack, pixels,
+                                                      width, height,
+                                                      GL_COLOR_INDEX, type,
+                                                      row, skipPixels);
+         _mesa_unpack_stencil_span(ctx, spanWidth, destType, values,
+                                   type, source, unpack,
+                                   ctx->_ImageTransferState);
+         if (zoom) {
+            _swrast_write_zoomed_stencil_span(ctx, x, y, spanWidth,
+                                              spanX, spanY, values);
+         }
+         else {
+            _swrast_write_stencil_span(ctx, spanWidth, spanX, spanY, values);
+         }
+      }
+      skipPixels += spanWidth;
+   }
+}
+
+
+/*
+ * Draw depth image.
+ */
+static void
+draw_depth_pixels( struct gl_context *ctx, GLint x, GLint y,
+                   GLsizei width, GLsizei height,
+                   GLenum type,
+                   const struct gl_pixelstore_attrib *unpack,
+                   const GLvoid *pixels )
+{
+   const GLboolean scaleOrBias
+      = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;
+   const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
+   SWspan span;
+
+   INIT_SPAN(span, GL_BITMAP);
+   span.arrayMask = SPAN_Z;
+   _swrast_span_default_attribs(ctx, &span);
+
+   if (type == GL_UNSIGNED_SHORT
+       && ctx->DrawBuffer->Visual.depthBits == 16
+       && !scaleOrBias
+       && !zoom
+       && width <= MAX_WIDTH
+       && !unpack->SwapBytes) {
+      /* Special case: directly write 16-bit depth values */
+      GLint row;
+      for (row = 0; row < height; row++) {
+         const GLushort *zSrc = (const GLushort *)
+            _mesa_image_address2d(unpack, pixels, width, height,
+                                  GL_DEPTH_COMPONENT, type, row, 0);
+         GLint i;
+         for (i = 0; i < width; i++)
+            span.array->z[i] = zSrc[i];
+         span.x = x;
+         span.y = y + row;
+         span.end = width;
+         _swrast_write_rgba_span(ctx, &span);
+      }
+   }
+   else if (type == GL_UNSIGNED_INT
+            && !scaleOrBias
+            && !zoom
+            && width <= MAX_WIDTH
+            && !unpack->SwapBytes) {
+      /* Special case: shift 32-bit values down to Visual.depthBits */
+      const GLint shift = 32 - ctx->DrawBuffer->Visual.depthBits;
+      GLint row;
+      for (row = 0; row < height; row++) {
+         const GLuint *zSrc = (const GLuint *)
+            _mesa_image_address2d(unpack, pixels, width, height,
+                                  GL_DEPTH_COMPONENT, type, row, 0);
+         if (shift == 0) {
+            memcpy(span.array->z, zSrc, width * sizeof(GLuint));
+         }
+         else {
+            GLint col;
+            for (col = 0; col < width; col++)
+               span.array->z[col] = zSrc[col] >> shift;
+         }
+         span.x = x;
+         span.y = y + row;
+         span.end = width;
+         _swrast_write_rgba_span(ctx, &span);
+      }
+   }
+   else {
+      /* General case */
+      const GLuint depthMax = ctx->DrawBuffer->_DepthMax;
+      GLint skipPixels = 0;
+
+      /* in case width > MAX_WIDTH do the copy in chunks */
+      while (skipPixels < width) {
+         const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);
+         GLint row;
+         ASSERT(span.end <= MAX_WIDTH);
+         for (row = 0; row < height; row++) {
+            const GLvoid *zSrc = _mesa_image_address2d(unpack,
+                                                      pixels, width, height,
+                                                      GL_DEPTH_COMPONENT, type,
+                                                      row, skipPixels);
+
+            /* Set these for each row since the _swrast_write_* function may
+             * change them while clipping.
+             */
+            span.x = x + skipPixels;
+            span.y = y + row;
+            span.end = spanWidth;
+
+            _mesa_unpack_depth_span(ctx, spanWidth,
+                                    GL_UNSIGNED_INT, span.array->z, depthMax,
+                                    type, zSrc, unpack);
+            if (zoom) {
+               _swrast_write_zoomed_depth_span(ctx, x, y, &span);
+            }
+            else {
+               _swrast_write_rgba_span(ctx, &span);
+            }
+         }
+         skipPixels += spanWidth;
+      }
+   }
+}
+
+
+
+/**
+ * Draw RGBA image.
+ */
+static void
+draw_rgba_pixels( struct gl_context *ctx, GLint x, GLint y,
+                  GLsizei width, GLsizei height,
+                  GLenum format, GLenum type,
+                  const struct gl_pixelstore_attrib *unpack,
+                  const GLvoid *pixels )
+{
+   const GLint imgX = x, imgY = y;
+   const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
+   GLfloat *convImage = NULL;
+   GLbitfield transferOps = ctx->_ImageTransferState;
+   SWspan span;
+
+   /* Try an optimized glDrawPixels first */
+   if (fast_draw_rgba_pixels(ctx, x, y, width, height, format, type,
+                             unpack, pixels)) {
+      return;
+   }
+
+   INIT_SPAN(span, GL_BITMAP);
+   _swrast_span_default_attribs(ctx, &span);
+   span.arrayMask = SPAN_RGBA;
+   span.arrayAttribs = FRAG_BIT_COL0; /* we're fill in COL0 attrib values */
+
+   if (ctx->DrawBuffer->_NumColorDrawBuffers > 0 &&
+       ctx->DrawBuffer->_ColorDrawBuffers[0]->DataType != GL_FLOAT &&
+       ctx->Color.ClampFragmentColor != GL_FALSE) {
+      /* need to clamp colors before applying fragment ops */
+      transferOps |= IMAGE_CLAMP_BIT;
+   }
+
+   /*
+    * General solution
+    */
+   {
+      const GLbitfield interpMask = span.interpMask;
+      const GLbitfield arrayMask = span.arrayMask;
+      const GLint srcStride
+         = _mesa_image_row_stride(unpack, width, format, type);
+      GLint skipPixels = 0;
+      /* use span array for temp color storage */
+      GLfloat *rgba = (GLfloat *) span.array->attribs[FRAG_ATTRIB_COL0];
+
+      /* if the span is wider than MAX_WIDTH we have to do it in chunks */
+      while (skipPixels < width) {
+         const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);
+         const GLubyte *source
+            = (const GLubyte *) _mesa_image_address2d(unpack, pixels,
+                                                      width, height, format,
+                                                      type, 0, skipPixels);
+         GLint row;
+
+         for (row = 0; row < height; row++) {
+            /* get image row as float/RGBA */
+            _mesa_unpack_color_span_float(ctx, spanWidth, GL_RGBA, rgba,
+                                     format, type, source, unpack,
+                                     transferOps);
+	    /* Set these for each row since the _swrast_write_* functions
+	     * may change them while clipping/rendering.
+	     */
+	    span.array->ChanType = GL_FLOAT;
+	    span.x = x + skipPixels;
+	    span.y = y + row;
+	    span.end = spanWidth;
+	    span.arrayMask = arrayMask;
+	    span.interpMask = interpMask;
+	    if (zoom) {
+	       _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span, rgba);
+	    }
+	    else {
+	       _swrast_write_rgba_span(ctx, &span);
+	    }
+
+            source += srcStride;
+         } /* for row */
+
+         skipPixels += spanWidth;
+      } /* while skipPixels < width */
+
+      /* XXX this is ugly/temporary, to undo above change */
+      span.array->ChanType = CHAN_TYPE;
+   }
+
+   if (convImage) {
+      free(convImage);
+   }
+}
+
+
+/**
+ * This is a bit different from drawing GL_DEPTH_COMPONENT pixels.
+ * The only per-pixel operations that apply are depth scale/bias,
+ * stencil offset/shift, GL_DEPTH_WRITEMASK and GL_STENCIL_WRITEMASK,
+ * and pixel zoom.
+ * Also, only the depth buffer and stencil buffers are touched, not the
+ * color buffer(s).
+ */
+static void
+draw_depth_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
+                          GLsizei width, GLsizei height, GLenum type,
+                          const struct gl_pixelstore_attrib *unpack,
+                          const GLvoid *pixels)
+{
+   const GLint imgX = x, imgY = y;
+   const GLboolean scaleOrBias
+      = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;
+   const GLuint depthMax = ctx->DrawBuffer->_DepthMax;
+   const GLuint stencilMask = ctx->Stencil.WriteMask[0];
+   const GLuint stencilType = (STENCIL_BITS == 8) ? 
+      GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT;
+   const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
+   struct gl_renderbuffer *depthRb, *stencilRb;
+   struct gl_pixelstore_attrib clippedUnpack = *unpack;
+
+   if (!zoom) {
+      if (!_mesa_clip_drawpixels(ctx, &x, &y, &width, &height,
+                                 &clippedUnpack)) {
+         /* totally clipped */
+         return;
+      }
+   }
+   
+   depthRb = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
+   stencilRb = ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
+   ASSERT(depthRb);
+   ASSERT(stencilRb);
+
+   if (depthRb->_BaseFormat == GL_DEPTH_STENCIL_EXT &&
+       stencilRb->_BaseFormat == GL_DEPTH_STENCIL_EXT &&
+       depthRb == stencilRb &&
+       !scaleOrBias &&
+       !zoom &&
+       ctx->Depth.Mask &&
+       (stencilMask & 0xff) == 0xff) {
+      /* This is the ideal case.
+       * Drawing GL_DEPTH_STENCIL pixels into a combined depth/stencil buffer.
+       * Plus, no pixel transfer ops, zooming, or masking needed.
+       */
+      GLint i;
+      for (i = 0; i < height; i++) {
+         const GLuint *src = (const GLuint *) 
+            _mesa_image_address2d(&clippedUnpack, pixels, width, height,
+                                  GL_DEPTH_STENCIL_EXT, type, i, 0);
+         depthRb->PutRow(ctx, depthRb, width, x, y + i, src, NULL);
+      }
+   }
+   else {
+      /* sub-optimal cases:
+       * Separate depth/stencil buffers, or pixel transfer ops required.
+       */
+      /* XXX need to handle very wide images (skippixels) */
+      GLint i;
+
+      depthRb = ctx->DrawBuffer->_DepthBuffer;
+      stencilRb = ctx->DrawBuffer->_StencilBuffer;
+
+      for (i = 0; i < height; i++) {
+         const GLuint *depthStencilSrc = (const GLuint *)
+            _mesa_image_address2d(&clippedUnpack, pixels, width, height,
+                                  GL_DEPTH_STENCIL_EXT, type, i, 0);
+
+         if (ctx->Depth.Mask) {
+            if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 24) {
+               /* fast path 24-bit zbuffer */
+               GLuint zValues[MAX_WIDTH];
+               GLint j;
+               ASSERT(depthRb->DataType == GL_UNSIGNED_INT);
+               for (j = 0; j < width; j++) {
+                  zValues[j] = depthStencilSrc[j] >> 8;
+               }
+               if (zoom)
+                  _swrast_write_zoomed_z_span(ctx, imgX, imgY, width,
+                                              x, y + i, zValues);
+               else
+                  depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);
+            }
+            else if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 16) {
+               /* fast path 16-bit zbuffer */
+               GLushort zValues[MAX_WIDTH];
+               GLint j;
+               ASSERT(depthRb->DataType == GL_UNSIGNED_SHORT);
+               for (j = 0; j < width; j++) {
+                  zValues[j] = depthStencilSrc[j] >> 16;
+               }
+               if (zoom)
+                  _swrast_write_zoomed_z_span(ctx, imgX, imgY, width,
+                                              x, y + i, zValues);
+               else
+                  depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);
+            }
+            else {
+               /* general case */
+               GLuint zValues[MAX_WIDTH];  /* 16 or 32-bit Z value storage */
+               _mesa_unpack_depth_span(ctx, width,
+                                       depthRb->DataType, zValues, depthMax,
+                                       type, depthStencilSrc, &clippedUnpack);
+               if (zoom) {
+                  _swrast_write_zoomed_z_span(ctx, imgX, imgY, width, x,
+                                              y + i, zValues);
+               }
+               else {
+                  depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);
+               }
+            }
+         }
+
+         if (stencilMask != 0x0) {
+            GLstencil stencilValues[MAX_WIDTH];
+            /* get stencil values, with shift/offset/mapping */
+            _mesa_unpack_stencil_span(ctx, width, stencilType, stencilValues,
+                                      type, depthStencilSrc, &clippedUnpack,
+                                      ctx->_ImageTransferState);
+            if (zoom)
+               _swrast_write_zoomed_stencil_span(ctx, imgX, imgY, width,
+                                                  x, y + i, stencilValues);
+            else
+               _swrast_write_stencil_span(ctx, width, x, y + i, stencilValues);
+         }
+      }
+   }
+}
+
+
+/**
+ * Execute software-based glDrawPixels.
+ * By time we get here, all error checking will have been done.
+ */
+void
+_swrast_DrawPixels( struct gl_context *ctx,
+		    GLint x, GLint y,
+		    GLsizei width, GLsizei height,
+		    GLenum format, GLenum type,
+		    const struct gl_pixelstore_attrib *unpack,
+		    const GLvoid *pixels )
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   GLboolean save_vp_override = ctx->VertexProgram._Overriden;
+
+   if (!_mesa_check_conditional_render(ctx))
+      return; /* don't draw */
+
+   /* We are creating fragments directly, without going through vertex
+    * programs.
+    *
+    * This override flag tells the fragment processing code that its input
+    * comes from a non-standard source, and it may therefore not rely on
+    * optimizations that assume e.g. constant color if there is no color
+    * vertex array.
+    */
+   _mesa_set_vp_override(ctx, GL_TRUE);
+
+   swrast_render_start(ctx);
+
+   if (ctx->NewState)
+      _mesa_update_state(ctx);
+
+   if (swrast->NewState)
+      _swrast_validate_derived( ctx );
+
+   pixels = _mesa_map_pbo_source(ctx, unpack, pixels);
+   if (!pixels) {
+      swrast_render_finish(ctx);
+      _mesa_set_vp_override(ctx, save_vp_override);
+      return;
+   }
+
+   /*
+    * By time we get here, all error checking should have been done.
+    */
+   switch (format) {
+   case GL_STENCIL_INDEX:
+      draw_stencil_pixels( ctx, x, y, width, height, type, unpack, pixels );
+      break;
+   case GL_DEPTH_COMPONENT:
+      draw_depth_pixels( ctx, x, y, width, height, type, unpack, pixels );
+      break;
+   case GL_DEPTH_STENCIL_EXT:
+      draw_depth_stencil_pixels(ctx, x, y, width, height, type, unpack, pixels);
+      break;
+   default:
+      /* all other formats should be color formats */
+      draw_rgba_pixels(ctx, x, y, width, height, format, type, unpack, pixels);
+   }
+
+   swrast_render_finish(ctx);
+   _mesa_set_vp_override(ctx, save_vp_override);
+
+   _mesa_unmap_pbo_source(ctx, unpack);
+}
diff --git a/mesalib/src/mesa/swrast/s_readpix.c b/mesalib/src/mesa/swrast/s_readpix.c
index 61399010b..5c8d7e9c5 100644
--- a/mesalib/src/mesa/swrast/s_readpix.c
+++ b/mesalib/src/mesa/swrast/s_readpix.c
@@ -1,508 +1,508 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.0.3

- *

- * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-#include "main/glheader.h"

-#include "main/bufferobj.h"

-#include "main/colormac.h"

-#include "main/feedback.h"

-#include "main/formats.h"

-#include "main/image.h"

-#include "main/imports.h"

-#include "main/macros.h"

-#include "main/pack.h"

-#include "main/state.h"

-

-#include "s_context.h"

-#include "s_depth.h"

-#include "s_span.h"

-#include "s_stencil.h"

-

-

-/**

- * Read pixels for format=GL_DEPTH_COMPONENT.

- */

-static void

-read_depth_pixels( struct gl_context *ctx,

-                   GLint x, GLint y,

-                   GLsizei width, GLsizei height,

-                   GLenum type, GLvoid *pixels,

-                   const struct gl_pixelstore_attrib *packing )

-{

-   struct gl_framebuffer *fb = ctx->ReadBuffer;

-   struct gl_renderbuffer *rb = fb->_DepthBuffer;

-   const GLboolean biasOrScale

-      = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;

-

-   if (!rb)

-      return;

-

-   /* clipping should have been done already */

-   ASSERT(x >= 0);

-   ASSERT(y >= 0);

-   ASSERT(x + width <= (GLint) rb->Width);

-   ASSERT(y + height <= (GLint) rb->Height);

-   /* width should never be > MAX_WIDTH since we did clipping earlier */

-   ASSERT(width <= MAX_WIDTH);

-

-   if (type == GL_UNSIGNED_SHORT && fb->Visual.depthBits == 16

-       && !biasOrScale && !packing->SwapBytes) {

-      /* Special case: directly read 16-bit unsigned depth values. */

-      GLint j;

-      ASSERT(rb->Format == MESA_FORMAT_Z16);

-      ASSERT(rb->DataType == GL_UNSIGNED_SHORT);

-      for (j = 0; j < height; j++, y++) {

-         void *dest =_mesa_image_address2d(packing, pixels, width, height,

-                                           GL_DEPTH_COMPONENT, type, j, 0);

-         rb->GetRow(ctx, rb, width, x, y, dest);

-      }

-   }

-   else if (type == GL_UNSIGNED_INT && fb->Visual.depthBits == 24

-            && !biasOrScale && !packing->SwapBytes) {

-      /* Special case: directly read 24-bit unsigned depth values. */

-      GLint j;

-      ASSERT(rb->Format == MESA_FORMAT_X8_Z24 ||

-             rb->Format == MESA_FORMAT_S8_Z24 ||

-             rb->Format == MESA_FORMAT_Z24_X8 ||

-             rb->Format == MESA_FORMAT_Z24_S8);

-      ASSERT(rb->DataType == GL_UNSIGNED_INT ||

-             rb->DataType == GL_UNSIGNED_INT_24_8);

-      for (j = 0; j < height; j++, y++) {

-         GLuint *dest = (GLuint *)

-            _mesa_image_address2d(packing, pixels, width, height,

-                                  GL_DEPTH_COMPONENT, type, j, 0);

-         GLint k;

-         rb->GetRow(ctx, rb, width, x, y, dest);

-         /* convert range from 24-bit to 32-bit */

-         if (rb->Format == MESA_FORMAT_X8_Z24 ||

-             rb->Format == MESA_FORMAT_S8_Z24) {

-            for (k = 0; k < width; k++) {

-               /* Note: put MSByte of 24-bit value into LSByte */

-               dest[k] = (dest[k] << 8) | ((dest[k] >> 16) & 0xff);

-            }

-         }

-         else {

-            for (k = 0; k < width; k++) {

-               /* Note: fill in LSByte by replication */

-               dest[k] = dest[k] | ((dest[k] >> 8) & 0xff);

-            }

-         }

-      }

-   }

-   else if (type == GL_UNSIGNED_INT && fb->Visual.depthBits == 32

-            && !biasOrScale && !packing->SwapBytes) {

-      /* Special case: directly read 32-bit unsigned depth values. */

-      GLint j;

-      ASSERT(rb->Format == MESA_FORMAT_Z32);

-      ASSERT(rb->DataType == GL_UNSIGNED_INT);

-      for (j = 0; j < height; j++, y++) {

-         void *dest = _mesa_image_address2d(packing, pixels, width, height,

-                                            GL_DEPTH_COMPONENT, type, j, 0);

-         rb->GetRow(ctx, rb, width, x, y, dest);

-      }

-   }

-   else {

-      /* General case (slower) */

-      GLint j;

-      for (j = 0; j < height; j++, y++) {

-         GLfloat depthValues[MAX_WIDTH];

-         GLvoid *dest = _mesa_image_address2d(packing, pixels, width, height,

-                                              GL_DEPTH_COMPONENT, type, j, 0);

-         _swrast_read_depth_span_float(ctx, rb, width, x, y, depthValues);

-         _mesa_pack_depth_span(ctx, width, dest, type, depthValues, packing);

-      }

-   }

-}

-

-

-/**

- * Read pixels for format=GL_STENCIL_INDEX.

- */

-static void

-read_stencil_pixels( struct gl_context *ctx,

-                     GLint x, GLint y,

-                     GLsizei width, GLsizei height,

-                     GLenum type, GLvoid *pixels,

-                     const struct gl_pixelstore_attrib *packing )

-{

-   struct gl_framebuffer *fb = ctx->ReadBuffer;

-   struct gl_renderbuffer *rb = fb->_StencilBuffer;

-   GLint j;

-

-   if (!rb)

-      return;

-

-   /* width should never be > MAX_WIDTH since we did clipping earlier */

-   ASSERT(width <= MAX_WIDTH);

-

-   /* process image row by row */

-   for (j=0;j<height;j++,y++) {

-      GLvoid *dest;

-      GLstencil stencil[MAX_WIDTH];

-

-      _swrast_read_stencil_span(ctx, rb, width, x, y, stencil);

-

-      dest = _mesa_image_address2d(packing, pixels, width, height,

-                                   GL_STENCIL_INDEX, type, j, 0);

-

-      _mesa_pack_stencil_span(ctx, width, type, dest, stencil, packing);

-   }

-}

-

-

-

-/**

- * Optimized glReadPixels for particular pixel formats when pixel

- * scaling, biasing, mapping, etc. are disabled.

- * \return GL_TRUE if success, GL_FALSE if unable to do the readpixels

- */

-static GLboolean

-fast_read_rgba_pixels( struct gl_context *ctx,

-                       GLint x, GLint y,

-                       GLsizei width, GLsizei height,

-                       GLenum format, GLenum type,

-                       GLvoid *pixels,

-                       const struct gl_pixelstore_attrib *packing,

-                       GLbitfield transferOps)

-{

-   struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;

-

-   if (!rb)

-      return GL_FALSE;

-

-   ASSERT(rb->_BaseFormat == GL_RGBA || rb->_BaseFormat == GL_RGB ||

-	  rb->_BaseFormat == GL_ALPHA);

-

-   /* clipping should have already been done */

-   ASSERT(x + width <= (GLint) rb->Width);

-   ASSERT(y + height <= (GLint) rb->Height);

-

-   /* check for things we can't handle here */

-   if (transferOps ||

-       packing->SwapBytes ||

-       packing->LsbFirst) {

-      return GL_FALSE;

-   }

-

-   if (format == GL_RGBA && rb->DataType == type) {

-      const GLint dstStride = _mesa_image_row_stride(packing, width,

-                                                     format, type);

-      GLubyte *dest

-         = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,

-                                             format, type, 0, 0);

-      GLint row;

-      ASSERT(rb->GetRow);

-      for (row = 0; row < height; row++) {

-         rb->GetRow(ctx, rb, width, x, y + row, dest);

-         dest += dstStride;

-      }

-      return GL_TRUE;

-   }

-

-   if (format == GL_RGB &&

-       rb->DataType == GL_UNSIGNED_BYTE &&

-       type == GL_UNSIGNED_BYTE) {

-      const GLint dstStride = _mesa_image_row_stride(packing, width,

-                                                     format, type);

-      GLubyte *dest

-         = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,

-                                             format, type, 0, 0);

-      GLint row;

-      ASSERT(rb->GetRow);

-      for (row = 0; row < height; row++) {

-         GLubyte tempRow[MAX_WIDTH][4];

-         GLint col;

-         rb->GetRow(ctx, rb, width, x, y + row, tempRow);

-         /* convert RGBA to RGB */

-         for (col = 0; col < width; col++) {

-            dest[col * 3 + 0] = tempRow[col][0];

-            dest[col * 3 + 1] = tempRow[col][1];

-            dest[col * 3 + 2] = tempRow[col][2];

-         }

-         dest += dstStride;

-      }

-      return GL_TRUE;

-   }

-

-   /* not handled */

-   return GL_FALSE;

-}

-

-

-/**

- * When we're using a low-precision color buffer (like 16-bit 5/6/5)

- * we have to adjust our color values a bit to pass conformance.

- * The problem is when a 5 or 6-bit color value is converted to an 8-bit

- * value and then a floating point value, the floating point values don't

- * increment uniformly as the 5 or 6-bit value is incremented.

- *

- * This function adjusts floating point values to compensate.

- */

-static void

-adjust_colors(const struct gl_framebuffer *fb, GLuint n, GLfloat rgba[][4])

-{

-   const GLuint rShift = 8 - fb->Visual.redBits;

-   const GLuint gShift = 8 - fb->Visual.greenBits;

-   const GLuint bShift = 8 - fb->Visual.blueBits;

-   GLfloat rScale = 1.0F / (GLfloat) ((1 << fb->Visual.redBits  ) - 1);

-   GLfloat gScale = 1.0F / (GLfloat) ((1 << fb->Visual.greenBits) - 1);

-   GLfloat bScale = 1.0F / (GLfloat) ((1 << fb->Visual.blueBits ) - 1);

-   GLuint i;

-

-   if (fb->Visual.redBits == 0)

-      rScale = 0;

-   if (fb->Visual.greenBits == 0)

-      gScale = 0;

-   if (fb->Visual.blueBits == 0)

-      bScale = 0;

-

-   for (i = 0; i < n; i++) {

-      GLint r, g, b;

-      /* convert float back to ubyte */

-      CLAMPED_FLOAT_TO_UBYTE(r, rgba[i][RCOMP]);

-      CLAMPED_FLOAT_TO_UBYTE(g, rgba[i][GCOMP]);

-      CLAMPED_FLOAT_TO_UBYTE(b, rgba[i][BCOMP]);

-      /* using only the N most significant bits of the ubyte value, convert to

-       * float in [0,1].

-       */

-      rgba[i][RCOMP] = (GLfloat) (r >> rShift) * rScale;

-      rgba[i][GCOMP] = (GLfloat) (g >> gShift) * gScale;

-      rgba[i][BCOMP] = (GLfloat) (b >> bShift) * bScale;

-   }

-}

-

-

-

-/*

- * Read R, G, B, A, RGB, L, or LA pixels.

- */

-static void

-read_rgba_pixels( struct gl_context *ctx,

-                  GLint x, GLint y,

-                  GLsizei width, GLsizei height,

-                  GLenum format, GLenum type, GLvoid *pixels,

-                  const struct gl_pixelstore_attrib *packing )

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   GLbitfield transferOps = ctx->_ImageTransferState;

-   struct gl_framebuffer *fb = ctx->ReadBuffer;

-   struct gl_renderbuffer *rb = fb->_ColorReadBuffer;

-

-   if (!rb)

-      return;

-

-   if (type == GL_FLOAT && ((ctx->Color.ClampReadColor == GL_TRUE) ||

-                            (ctx->Color.ClampReadColor == GL_FIXED_ONLY_ARB &&

-                             rb->DataType != GL_FLOAT)))

-      transferOps |= IMAGE_CLAMP_BIT;

-

-   /* Try optimized path first */

-   if (fast_read_rgba_pixels(ctx, x, y, width, height,

-                             format, type, pixels, packing, transferOps)) {

-      return; /* done! */

-   }

-

-   /* width should never be > MAX_WIDTH since we did clipping earlier */

-   ASSERT(width <= MAX_WIDTH);

-

-   do {

-      const GLint dstStride

-         = _mesa_image_row_stride(packing, width, format, type);

-      GLfloat (*rgba)[4] = swrast->SpanArrays->attribs[FRAG_ATTRIB_COL0];

-      GLint row;

-      GLubyte *dst

-         = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,

-                                             format, type, 0, 0);

-

-      for (row = 0; row < height; row++, y++) {

-

-         /* Get float rgba pixels */

-         _swrast_read_rgba_span(ctx, rb, width, x, y, GL_FLOAT, rgba);

-

-         /* apply fudge factor for shallow color buffers */

-         if (fb->Visual.redBits < 8 ||

-             fb->Visual.greenBits < 8 ||

-             fb->Visual.blueBits < 8) {

-            adjust_colors(fb, width, rgba);

-         }

-

-         /* pack the row of RGBA pixels into user's buffer */

-         _mesa_pack_rgba_span_float(ctx, width, rgba, format, type, dst,

-                                    packing, transferOps);

-

-         dst += dstStride;

-      }

-   } while (0);

-}

-

-

-/**

- * Read combined depth/stencil values.

- * We'll have already done error checking to be sure the expected

- * depth and stencil buffers really exist.

- */

-static void

-read_depth_stencil_pixels(struct gl_context *ctx,

-                          GLint x, GLint y,

-                          GLsizei width, GLsizei height,

-                          GLenum type, GLvoid *pixels,

-                          const struct gl_pixelstore_attrib *packing )

-{

-   const GLboolean scaleOrBias

-      = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;

-   const GLboolean stencilTransfer = ctx->Pixel.IndexShift

-      || ctx->Pixel.IndexOffset || ctx->Pixel.MapStencilFlag;

-   struct gl_renderbuffer *depthRb, *stencilRb;

-

-   depthRb = ctx->ReadBuffer->_DepthBuffer;

-   stencilRb = ctx->ReadBuffer->_StencilBuffer;

-

-   if (!depthRb || !stencilRb)

-      return;

-

-   depthRb = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;

-   stencilRb = ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;

-

-   if (depthRb->_BaseFormat == GL_DEPTH_STENCIL_EXT &&

-       stencilRb->_BaseFormat == GL_DEPTH_STENCIL_EXT &&

-       depthRb == stencilRb &&

-       !scaleOrBias &&

-       !stencilTransfer) {

-      /* This is the ideal case.

-       * Reading GL_DEPTH_STENCIL pixels from combined depth/stencil buffer.

-       * Plus, no pixel transfer ops to worry about!

-       */

-      GLint i;

-      GLint dstStride = _mesa_image_row_stride(packing, width,

-                                               GL_DEPTH_STENCIL_EXT, type);

-      GLubyte *dst = (GLubyte *) _mesa_image_address2d(packing, pixels,

-                                                       width, height,

-                                                       GL_DEPTH_STENCIL_EXT,

-                                                       type, 0, 0);

-      for (i = 0; i < height; i++) {

-         depthRb->GetRow(ctx, depthRb, width, x, y + i, dst);

-         dst += dstStride;

-      }

-   }

-   else {

-      /* Reading GL_DEPTH_STENCIL pixels from separate depth/stencil buffers,

-       * or we need pixel transfer.

-       */

-      GLint i;

-      depthRb = ctx->ReadBuffer->_DepthBuffer;

-      stencilRb = ctx->ReadBuffer->_StencilBuffer;

-

-      for (i = 0; i < height; i++) {

-         GLstencil stencilVals[MAX_WIDTH];

-

-         GLuint *depthStencilDst = (GLuint *)

-            _mesa_image_address2d(packing, pixels, width, height,

-                                  GL_DEPTH_STENCIL_EXT, type, i, 0);

-

-         _swrast_read_stencil_span(ctx, stencilRb, width,

-                                   x, y + i, stencilVals);

-

-         if (!scaleOrBias && !stencilTransfer

-             && ctx->ReadBuffer->Visual.depthBits == 24) {

-            /* ideal case */

-            GLuint zVals[MAX_WIDTH]; /* 24-bit values! */

-            GLint j;

-            ASSERT(depthRb->DataType == GL_UNSIGNED_INT);

-            /* note, we've already been clipped */

-            depthRb->GetRow(ctx, depthRb, width, x, y + i, zVals);

-            for (j = 0; j < width; j++) {

-               depthStencilDst[j] = (zVals[j] << 8) | (stencilVals[j] & 0xff);

-            }

-         }

-         else {

-            /* general case */

-            GLfloat depthVals[MAX_WIDTH];

-            _swrast_read_depth_span_float(ctx, depthRb, width, x, y + i,

-                                          depthVals);

-            _mesa_pack_depth_stencil_span(ctx, width, depthStencilDst,

-                                          depthVals, stencilVals, packing);

-         }

-      }

-   }

-}

-

-

-

-/**

- * Software fallback routine for ctx->Driver.ReadPixels().

- * By time we get here, all error checking will have been done.

- */

-void

-_swrast_ReadPixels( struct gl_context *ctx,

-		    GLint x, GLint y, GLsizei width, GLsizei height,

-		    GLenum format, GLenum type,

-		    const struct gl_pixelstore_attrib *packing,

-		    GLvoid *pixels )

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   struct gl_pixelstore_attrib clippedPacking = *packing;

-

-   if (ctx->NewState)

-      _mesa_update_state(ctx);

-

-   /* Need to do swrast_render_start() before clipping or anything else

-    * since this is where a driver may grab the hw lock and get an updated

-    * window size.

-    */

-   swrast_render_start(ctx);

-

-   if (swrast->NewState)

-      _swrast_validate_derived( ctx );

-

-   /* Do all needed clipping here, so that we can forget about it later */

-   if (_mesa_clip_readpixels(ctx, &x, &y, &width, &height, &clippedPacking)) {

-

-      pixels = _mesa_map_pbo_dest(ctx, &clippedPacking, pixels);

-

-      if (pixels) {

-         switch (format) {

-         case GL_STENCIL_INDEX:

-            read_stencil_pixels(ctx, x, y, width, height, type, pixels,

-                                &clippedPacking);

-            break;

-         case GL_DEPTH_COMPONENT:

-            read_depth_pixels(ctx, x, y, width, height, type, pixels,

-                              &clippedPacking);

-            break;

-         case GL_DEPTH_STENCIL_EXT:

-            read_depth_stencil_pixels(ctx, x, y, width, height, type, pixels,

-                                      &clippedPacking);

-            break;

-         default:

-            /* all other formats should be color formats */

-            read_rgba_pixels(ctx, x, y, width, height, format, type, pixels,

-                             &clippedPacking);

-         }

-

-         _mesa_unmap_pbo_dest(ctx, &clippedPacking);

-      }

-   }

-

-   swrast_render_finish(ctx);

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.0.3
+ *
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "main/glheader.h"
+#include "main/colormac.h"
+#include "main/feedback.h"
+#include "main/formats.h"
+#include "main/image.h"
+#include "main/imports.h"
+#include "main/macros.h"
+#include "main/pack.h"
+#include "main/pbo.h"
+#include "main/state.h"
+
+#include "s_context.h"
+#include "s_depth.h"
+#include "s_span.h"
+#include "s_stencil.h"
+
+
+/**
+ * Read pixels for format=GL_DEPTH_COMPONENT.
+ */
+static void
+read_depth_pixels( struct gl_context *ctx,
+                   GLint x, GLint y,
+                   GLsizei width, GLsizei height,
+                   GLenum type, GLvoid *pixels,
+                   const struct gl_pixelstore_attrib *packing )
+{
+   struct gl_framebuffer *fb = ctx->ReadBuffer;
+   struct gl_renderbuffer *rb = fb->_DepthBuffer;
+   const GLboolean biasOrScale
+      = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;
+
+   if (!rb)
+      return;
+
+   /* clipping should have been done already */
+   ASSERT(x >= 0);
+   ASSERT(y >= 0);
+   ASSERT(x + width <= (GLint) rb->Width);
+   ASSERT(y + height <= (GLint) rb->Height);
+   /* width should never be > MAX_WIDTH since we did clipping earlier */
+   ASSERT(width <= MAX_WIDTH);
+
+   if (type == GL_UNSIGNED_SHORT && fb->Visual.depthBits == 16
+       && !biasOrScale && !packing->SwapBytes) {
+      /* Special case: directly read 16-bit unsigned depth values. */
+      GLint j;
+      ASSERT(rb->Format == MESA_FORMAT_Z16);
+      ASSERT(rb->DataType == GL_UNSIGNED_SHORT);
+      for (j = 0; j < height; j++, y++) {
+         void *dest =_mesa_image_address2d(packing, pixels, width, height,
+                                           GL_DEPTH_COMPONENT, type, j, 0);
+         rb->GetRow(ctx, rb, width, x, y, dest);
+      }
+   }
+   else if (type == GL_UNSIGNED_INT && fb->Visual.depthBits == 24
+            && !biasOrScale && !packing->SwapBytes) {
+      /* Special case: directly read 24-bit unsigned depth values. */
+      GLint j;
+      ASSERT(rb->Format == MESA_FORMAT_X8_Z24 ||
+             rb->Format == MESA_FORMAT_S8_Z24 ||
+             rb->Format == MESA_FORMAT_Z24_X8 ||
+             rb->Format == MESA_FORMAT_Z24_S8);
+      ASSERT(rb->DataType == GL_UNSIGNED_INT ||
+             rb->DataType == GL_UNSIGNED_INT_24_8);
+      for (j = 0; j < height; j++, y++) {
+         GLuint *dest = (GLuint *)
+            _mesa_image_address2d(packing, pixels, width, height,
+                                  GL_DEPTH_COMPONENT, type, j, 0);
+         GLint k;
+         rb->GetRow(ctx, rb, width, x, y, dest);
+         /* convert range from 24-bit to 32-bit */
+         if (rb->Format == MESA_FORMAT_X8_Z24 ||
+             rb->Format == MESA_FORMAT_S8_Z24) {
+            for (k = 0; k < width; k++) {
+               /* Note: put MSByte of 24-bit value into LSByte */
+               dest[k] = (dest[k] << 8) | ((dest[k] >> 16) & 0xff);
+            }
+         }
+         else {
+            for (k = 0; k < width; k++) {
+               /* Note: fill in LSByte by replication */
+               dest[k] = dest[k] | ((dest[k] >> 8) & 0xff);
+            }
+         }
+      }
+   }
+   else if (type == GL_UNSIGNED_INT && fb->Visual.depthBits == 32
+            && !biasOrScale && !packing->SwapBytes) {
+      /* Special case: directly read 32-bit unsigned depth values. */
+      GLint j;
+      ASSERT(rb->Format == MESA_FORMAT_Z32);
+      ASSERT(rb->DataType == GL_UNSIGNED_INT);
+      for (j = 0; j < height; j++, y++) {
+         void *dest = _mesa_image_address2d(packing, pixels, width, height,
+                                            GL_DEPTH_COMPONENT, type, j, 0);
+         rb->GetRow(ctx, rb, width, x, y, dest);
+      }
+   }
+   else {
+      /* General case (slower) */
+      GLint j;
+      for (j = 0; j < height; j++, y++) {
+         GLfloat depthValues[MAX_WIDTH];
+         GLvoid *dest = _mesa_image_address2d(packing, pixels, width, height,
+                                              GL_DEPTH_COMPONENT, type, j, 0);
+         _swrast_read_depth_span_float(ctx, rb, width, x, y, depthValues);
+         _mesa_pack_depth_span(ctx, width, dest, type, depthValues, packing);
+      }
+   }
+}
+
+
+/**
+ * Read pixels for format=GL_STENCIL_INDEX.
+ */
+static void
+read_stencil_pixels( struct gl_context *ctx,
+                     GLint x, GLint y,
+                     GLsizei width, GLsizei height,
+                     GLenum type, GLvoid *pixels,
+                     const struct gl_pixelstore_attrib *packing )
+{
+   struct gl_framebuffer *fb = ctx->ReadBuffer;
+   struct gl_renderbuffer *rb = fb->_StencilBuffer;
+   GLint j;
+
+   if (!rb)
+      return;
+
+   /* width should never be > MAX_WIDTH since we did clipping earlier */
+   ASSERT(width <= MAX_WIDTH);
+
+   /* process image row by row */
+   for (j=0;j<height;j++,y++) {
+      GLvoid *dest;
+      GLstencil stencil[MAX_WIDTH];
+
+      _swrast_read_stencil_span(ctx, rb, width, x, y, stencil);
+
+      dest = _mesa_image_address2d(packing, pixels, width, height,
+                                   GL_STENCIL_INDEX, type, j, 0);
+
+      _mesa_pack_stencil_span(ctx, width, type, dest, stencil, packing);
+   }
+}
+
+
+
+/**
+ * Optimized glReadPixels for particular pixel formats when pixel
+ * scaling, biasing, mapping, etc. are disabled.
+ * \return GL_TRUE if success, GL_FALSE if unable to do the readpixels
+ */
+static GLboolean
+fast_read_rgba_pixels( struct gl_context *ctx,
+                       GLint x, GLint y,
+                       GLsizei width, GLsizei height,
+                       GLenum format, GLenum type,
+                       GLvoid *pixels,
+                       const struct gl_pixelstore_attrib *packing,
+                       GLbitfield transferOps)
+{
+   struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
+
+   if (!rb)
+      return GL_FALSE;
+
+   ASSERT(rb->_BaseFormat == GL_RGBA || rb->_BaseFormat == GL_RGB ||
+	  rb->_BaseFormat == GL_ALPHA);
+
+   /* clipping should have already been done */
+   ASSERT(x + width <= (GLint) rb->Width);
+   ASSERT(y + height <= (GLint) rb->Height);
+
+   /* check for things we can't handle here */
+   if (transferOps ||
+       packing->SwapBytes ||
+       packing->LsbFirst) {
+      return GL_FALSE;
+   }
+
+   if (format == GL_RGBA && rb->DataType == type) {
+      const GLint dstStride = _mesa_image_row_stride(packing, width,
+                                                     format, type);
+      GLubyte *dest
+         = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,
+                                             format, type, 0, 0);
+      GLint row;
+      ASSERT(rb->GetRow);
+      for (row = 0; row < height; row++) {
+         rb->GetRow(ctx, rb, width, x, y + row, dest);
+         dest += dstStride;
+      }
+      return GL_TRUE;
+   }
+
+   if (format == GL_RGB &&
+       rb->DataType == GL_UNSIGNED_BYTE &&
+       type == GL_UNSIGNED_BYTE) {
+      const GLint dstStride = _mesa_image_row_stride(packing, width,
+                                                     format, type);
+      GLubyte *dest
+         = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,
+                                             format, type, 0, 0);
+      GLint row;
+      ASSERT(rb->GetRow);
+      for (row = 0; row < height; row++) {
+         GLubyte tempRow[MAX_WIDTH][4];
+         GLint col;
+         rb->GetRow(ctx, rb, width, x, y + row, tempRow);
+         /* convert RGBA to RGB */
+         for (col = 0; col < width; col++) {
+            dest[col * 3 + 0] = tempRow[col][0];
+            dest[col * 3 + 1] = tempRow[col][1];
+            dest[col * 3 + 2] = tempRow[col][2];
+         }
+         dest += dstStride;
+      }
+      return GL_TRUE;
+   }
+
+   /* not handled */
+   return GL_FALSE;
+}
+
+
+/**
+ * When we're using a low-precision color buffer (like 16-bit 5/6/5)
+ * we have to adjust our color values a bit to pass conformance.
+ * The problem is when a 5 or 6-bit color value is converted to an 8-bit
+ * value and then a floating point value, the floating point values don't
+ * increment uniformly as the 5 or 6-bit value is incremented.
+ *
+ * This function adjusts floating point values to compensate.
+ */
+static void
+adjust_colors(const struct gl_framebuffer *fb, GLuint n, GLfloat rgba[][4])
+{
+   const GLuint rShift = 8 - fb->Visual.redBits;
+   const GLuint gShift = 8 - fb->Visual.greenBits;
+   const GLuint bShift = 8 - fb->Visual.blueBits;
+   GLfloat rScale = 1.0F / (GLfloat) ((1 << fb->Visual.redBits  ) - 1);
+   GLfloat gScale = 1.0F / (GLfloat) ((1 << fb->Visual.greenBits) - 1);
+   GLfloat bScale = 1.0F / (GLfloat) ((1 << fb->Visual.blueBits ) - 1);
+   GLuint i;
+
+   if (fb->Visual.redBits == 0)
+      rScale = 0;
+   if (fb->Visual.greenBits == 0)
+      gScale = 0;
+   if (fb->Visual.blueBits == 0)
+      bScale = 0;
+
+   for (i = 0; i < n; i++) {
+      GLint r, g, b;
+      /* convert float back to ubyte */
+      CLAMPED_FLOAT_TO_UBYTE(r, rgba[i][RCOMP]);
+      CLAMPED_FLOAT_TO_UBYTE(g, rgba[i][GCOMP]);
+      CLAMPED_FLOAT_TO_UBYTE(b, rgba[i][BCOMP]);
+      /* using only the N most significant bits of the ubyte value, convert to
+       * float in [0,1].
+       */
+      rgba[i][RCOMP] = (GLfloat) (r >> rShift) * rScale;
+      rgba[i][GCOMP] = (GLfloat) (g >> gShift) * gScale;
+      rgba[i][BCOMP] = (GLfloat) (b >> bShift) * bScale;
+   }
+}
+
+
+
+/*
+ * Read R, G, B, A, RGB, L, or LA pixels.
+ */
+static void
+read_rgba_pixels( struct gl_context *ctx,
+                  GLint x, GLint y,
+                  GLsizei width, GLsizei height,
+                  GLenum format, GLenum type, GLvoid *pixels,
+                  const struct gl_pixelstore_attrib *packing )
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   GLbitfield transferOps = ctx->_ImageTransferState;
+   struct gl_framebuffer *fb = ctx->ReadBuffer;
+   struct gl_renderbuffer *rb = fb->_ColorReadBuffer;
+
+   if (!rb)
+      return;
+
+   if (type == GL_FLOAT && ((ctx->Color.ClampReadColor == GL_TRUE) ||
+                            (ctx->Color.ClampReadColor == GL_FIXED_ONLY_ARB &&
+                             rb->DataType != GL_FLOAT)))
+      transferOps |= IMAGE_CLAMP_BIT;
+
+   /* Try optimized path first */
+   if (fast_read_rgba_pixels(ctx, x, y, width, height,
+                             format, type, pixels, packing, transferOps)) {
+      return; /* done! */
+   }
+
+   /* width should never be > MAX_WIDTH since we did clipping earlier */
+   ASSERT(width <= MAX_WIDTH);
+
+   do {
+      const GLint dstStride
+         = _mesa_image_row_stride(packing, width, format, type);
+      GLfloat (*rgba)[4] = swrast->SpanArrays->attribs[FRAG_ATTRIB_COL0];
+      GLint row;
+      GLubyte *dst
+         = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,
+                                             format, type, 0, 0);
+
+      for (row = 0; row < height; row++, y++) {
+
+         /* Get float rgba pixels */
+         _swrast_read_rgba_span(ctx, rb, width, x, y, GL_FLOAT, rgba);
+
+         /* apply fudge factor for shallow color buffers */
+         if (fb->Visual.redBits < 8 ||
+             fb->Visual.greenBits < 8 ||
+             fb->Visual.blueBits < 8) {
+            adjust_colors(fb, width, rgba);
+         }
+
+         /* pack the row of RGBA pixels into user's buffer */
+         _mesa_pack_rgba_span_float(ctx, width, rgba, format, type, dst,
+                                    packing, transferOps);
+
+         dst += dstStride;
+      }
+   } while (0);
+}
+
+
+/**
+ * Read combined depth/stencil values.
+ * We'll have already done error checking to be sure the expected
+ * depth and stencil buffers really exist.
+ */
+static void
+read_depth_stencil_pixels(struct gl_context *ctx,
+                          GLint x, GLint y,
+                          GLsizei width, GLsizei height,
+                          GLenum type, GLvoid *pixels,
+                          const struct gl_pixelstore_attrib *packing )
+{
+   const GLboolean scaleOrBias
+      = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;
+   const GLboolean stencilTransfer = ctx->Pixel.IndexShift
+      || ctx->Pixel.IndexOffset || ctx->Pixel.MapStencilFlag;
+   struct gl_renderbuffer *depthRb, *stencilRb;
+
+   depthRb = ctx->ReadBuffer->_DepthBuffer;
+   stencilRb = ctx->ReadBuffer->_StencilBuffer;
+
+   if (!depthRb || !stencilRb)
+      return;
+
+   depthRb = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
+   stencilRb = ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
+
+   if (depthRb->_BaseFormat == GL_DEPTH_STENCIL_EXT &&
+       stencilRb->_BaseFormat == GL_DEPTH_STENCIL_EXT &&
+       depthRb == stencilRb &&
+       !scaleOrBias &&
+       !stencilTransfer) {
+      /* This is the ideal case.
+       * Reading GL_DEPTH_STENCIL pixels from combined depth/stencil buffer.
+       * Plus, no pixel transfer ops to worry about!
+       */
+      GLint i;
+      GLint dstStride = _mesa_image_row_stride(packing, width,
+                                               GL_DEPTH_STENCIL_EXT, type);
+      GLubyte *dst = (GLubyte *) _mesa_image_address2d(packing, pixels,
+                                                       width, height,
+                                                       GL_DEPTH_STENCIL_EXT,
+                                                       type, 0, 0);
+      for (i = 0; i < height; i++) {
+         depthRb->GetRow(ctx, depthRb, width, x, y + i, dst);
+         dst += dstStride;
+      }
+   }
+   else {
+      /* Reading GL_DEPTH_STENCIL pixels from separate depth/stencil buffers,
+       * or we need pixel transfer.
+       */
+      GLint i;
+      depthRb = ctx->ReadBuffer->_DepthBuffer;
+      stencilRb = ctx->ReadBuffer->_StencilBuffer;
+
+      for (i = 0; i < height; i++) {
+         GLstencil stencilVals[MAX_WIDTH];
+
+         GLuint *depthStencilDst = (GLuint *)
+            _mesa_image_address2d(packing, pixels, width, height,
+                                  GL_DEPTH_STENCIL_EXT, type, i, 0);
+
+         _swrast_read_stencil_span(ctx, stencilRb, width,
+                                   x, y + i, stencilVals);
+
+         if (!scaleOrBias && !stencilTransfer
+             && ctx->ReadBuffer->Visual.depthBits == 24) {
+            /* ideal case */
+            GLuint zVals[MAX_WIDTH]; /* 24-bit values! */
+            GLint j;
+            ASSERT(depthRb->DataType == GL_UNSIGNED_INT);
+            /* note, we've already been clipped */
+            depthRb->GetRow(ctx, depthRb, width, x, y + i, zVals);
+            for (j = 0; j < width; j++) {
+               depthStencilDst[j] = (zVals[j] << 8) | (stencilVals[j] & 0xff);
+            }
+         }
+         else {
+            /* general case */
+            GLfloat depthVals[MAX_WIDTH];
+            _swrast_read_depth_span_float(ctx, depthRb, width, x, y + i,
+                                          depthVals);
+            _mesa_pack_depth_stencil_span(ctx, width, depthStencilDst,
+                                          depthVals, stencilVals, packing);
+         }
+      }
+   }
+}
+
+
+
+/**
+ * Software fallback routine for ctx->Driver.ReadPixels().
+ * By time we get here, all error checking will have been done.
+ */
+void
+_swrast_ReadPixels( struct gl_context *ctx,
+		    GLint x, GLint y, GLsizei width, GLsizei height,
+		    GLenum format, GLenum type,
+		    const struct gl_pixelstore_attrib *packing,
+		    GLvoid *pixels )
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   struct gl_pixelstore_attrib clippedPacking = *packing;
+
+   if (ctx->NewState)
+      _mesa_update_state(ctx);
+
+   /* Need to do swrast_render_start() before clipping or anything else
+    * since this is where a driver may grab the hw lock and get an updated
+    * window size.
+    */
+   swrast_render_start(ctx);
+
+   if (swrast->NewState)
+      _swrast_validate_derived( ctx );
+
+   /* Do all needed clipping here, so that we can forget about it later */
+   if (_mesa_clip_readpixels(ctx, &x, &y, &width, &height, &clippedPacking)) {
+
+      pixels = _mesa_map_pbo_dest(ctx, &clippedPacking, pixels);
+
+      if (pixels) {
+         switch (format) {
+         case GL_STENCIL_INDEX:
+            read_stencil_pixels(ctx, x, y, width, height, type, pixels,
+                                &clippedPacking);
+            break;
+         case GL_DEPTH_COMPONENT:
+            read_depth_pixels(ctx, x, y, width, height, type, pixels,
+                              &clippedPacking);
+            break;
+         case GL_DEPTH_STENCIL_EXT:
+            read_depth_stencil_pixels(ctx, x, y, width, height, type, pixels,
+                                      &clippedPacking);
+            break;
+         default:
+            /* all other formats should be color formats */
+            read_rgba_pixels(ctx, x, y, width, height, format, type, pixels,
+                             &clippedPacking);
+         }
+
+         _mesa_unmap_pbo_dest(ctx, &clippedPacking);
+      }
+   }
+
+   swrast_render_finish(ctx);
+}
diff --git a/mesalib/src/mesa/swrast/s_texcombine.c b/mesalib/src/mesa/swrast/s_texcombine.c
index 672cd77bf..0c8cc9ff3 100644
--- a/mesalib/src/mesa/swrast/s_texcombine.c
+++ b/mesalib/src/mesa/swrast/s_texcombine.c
@@ -1,742 +1,737 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.5

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (C) 2009  VMware, Inc.   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-#include "main/glheader.h"

-#include "main/context.h"

-#include "main/colormac.h"

-#include "main/imports.h"

-#include "main/pixeltransfer.h"

-#include "program/prog_instruction.h"

-

-#include "s_context.h"

-#include "s_texcombine.h"

-

-

-/**

- * Pointer to array of float[4]

- * This type makes the code below more concise and avoids a lot of casting.

- */

-typedef float (*float4_array)[4];

-

-

-/**

- * Return array of texels for given unit.

- */

-static INLINE float4_array

-get_texel_array(SWcontext *swrast, GLuint unit)

-{

-   return (float4_array) (swrast->TexelBuffer + unit * MAX_WIDTH * 4);

-}

-

-

-

-/**

- * Do texture application for:

- *  GL_EXT_texture_env_combine

- *  GL_ARB_texture_env_combine

- *  GL_EXT_texture_env_dot3

- *  GL_ARB_texture_env_dot3

- *  GL_ATI_texture_env_combine3

- *  GL_NV_texture_env_combine4

- *  conventional GL texture env modes

- *

- * \param ctx          rendering context

- * \param unit         the texture combiner unit

- * \param n            number of fragments to process (span width)

- * \param primary_rgba incoming fragment color array

- * \param texelBuffer  pointer to texel colors for all texture units

- * 

- * \param rgba         incoming/result fragment colors

- */

-static void

-texture_combine( struct gl_context *ctx, GLuint unit, GLuint n,

-                 const float4_array primary_rgba,

-                 const GLfloat *texelBuffer,

-                 GLchan (*rgbaChan)[4] )

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   const struct gl_texture_unit *textureUnit = &(ctx->Texture.Unit[unit]);

-   const struct gl_tex_env_combine_state *combine = textureUnit->_CurrentCombine;

-   float4_array argRGB[MAX_COMBINER_TERMS];

-   float4_array argA[MAX_COMBINER_TERMS];

-   const GLfloat scaleRGB = (GLfloat) (1 << combine->ScaleShiftRGB);

-   const GLfloat scaleA = (GLfloat) (1 << combine->ScaleShiftA);

-   const GLuint numArgsRGB = combine->_NumArgsRGB;

-   const GLuint numArgsA = combine->_NumArgsA;

-   float4_array ccolor[4], rgba;

-   GLuint i, term;

-

-   /* alloc temp pixel buffers */

-   rgba = (float4_array) malloc(4 * n * sizeof(GLfloat));

-   if (!rgba) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture_combine");

-      return;

-   }

-

-   for (i = 0; i < numArgsRGB || i < numArgsA; i++) {

-      ccolor[i] = (float4_array) malloc(4 * n * sizeof(GLfloat));

-      if (!ccolor[i]) {

-         while (i) {

-            free(ccolor[i]);

-            i--;

-         }

-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture_combine");

-         return;

-      }

-   }

-

-   for (i = 0; i < n; i++) {

-      rgba[i][RCOMP] = CHAN_TO_FLOAT(rgbaChan[i][RCOMP]);

-      rgba[i][GCOMP] = CHAN_TO_FLOAT(rgbaChan[i][GCOMP]);

-      rgba[i][BCOMP] = CHAN_TO_FLOAT(rgbaChan[i][BCOMP]);

-      rgba[i][ACOMP] = CHAN_TO_FLOAT(rgbaChan[i][ACOMP]);

-   }

-

-   /*

-   printf("modeRGB 0x%x  modeA 0x%x  srcRGB1 0x%x  srcA1 0x%x  srcRGB2 0x%x  srcA2 0x%x\n",

-          combine->ModeRGB,

-          combine->ModeA,

-          combine->SourceRGB[0],

-          combine->SourceA[0],

-          combine->SourceRGB[1],

-          combine->SourceA[1]);

-   */

-

-   /*

-    * Do operand setup for up to 4 operands.  Loop over the terms.

-    */

-   for (term = 0; term < numArgsRGB; term++) {

-      const GLenum srcRGB = combine->SourceRGB[term];

-      const GLenum operandRGB = combine->OperandRGB[term];

-

-      switch (srcRGB) {

-         case GL_TEXTURE:

-            argRGB[term] = get_texel_array(swrast, unit);

-            break;

-         case GL_PRIMARY_COLOR:

-            argRGB[term] = primary_rgba;

-            break;

-         case GL_PREVIOUS:

-            argRGB[term] = rgba;

-            break;

-         case GL_CONSTANT:

-            {

-               float4_array c = ccolor[term];

-               GLfloat red   = textureUnit->EnvColor[0];

-               GLfloat green = textureUnit->EnvColor[1];

-               GLfloat blue  = textureUnit->EnvColor[2];

-               GLfloat alpha = textureUnit->EnvColor[3];

-               for (i = 0; i < n; i++) {

-                  ASSIGN_4V(c[i], red, green, blue, alpha);

-               }

-               argRGB[term] = ccolor[term];

-            }

-            break;

-	 /* GL_ATI_texture_env_combine3 allows GL_ZERO & GL_ONE as sources.

-	  */

-	 case GL_ZERO:

-            {

-               float4_array c = ccolor[term];

-               for (i = 0; i < n; i++) {

-                  ASSIGN_4V(c[i], 0.0F, 0.0F, 0.0F, 0.0F);

-               }

-               argRGB[term] = ccolor[term];

-            }

-            break;

-	 case GL_ONE:

-            {

-               float4_array c = ccolor[term];

-               for (i = 0; i < n; i++) {

-                  ASSIGN_4V(c[i], 1.0F, 1.0F, 1.0F, 1.0F);

-               }

-               argRGB[term] = ccolor[term];

-            }

-            break;

-         default:

-            /* ARB_texture_env_crossbar source */

-            {

-               const GLuint srcUnit = srcRGB - GL_TEXTURE0;

-               ASSERT(srcUnit < ctx->Const.MaxTextureUnits);

-               if (!ctx->Texture.Unit[srcUnit]._ReallyEnabled)

-                  goto end;

-               argRGB[term] = get_texel_array(swrast, srcUnit);

-            }

-      }

-

-      if (operandRGB != GL_SRC_COLOR) {

-         float4_array src = argRGB[term];

-         float4_array dst = ccolor[term];

-

-         /* point to new arg[term] storage */

-         argRGB[term] = ccolor[term];

-

-         switch (operandRGB) {

-         case GL_ONE_MINUS_SRC_COLOR:

-            for (i = 0; i < n; i++) {

-               dst[i][RCOMP] = 1.0F - src[i][RCOMP];

-               dst[i][GCOMP] = 1.0F - src[i][GCOMP];

-               dst[i][BCOMP] = 1.0F - src[i][BCOMP];

-            }

-            break;

-         case GL_SRC_ALPHA:

-            for (i = 0; i < n; i++) {

-               dst[i][RCOMP] =

-               dst[i][GCOMP] =

-               dst[i][BCOMP] = src[i][ACOMP];

-            }

-            break;

-         case GL_ONE_MINUS_SRC_ALPHA:

-            for (i = 0; i < n; i++) {

-               dst[i][RCOMP] =

-               dst[i][GCOMP] =

-               dst[i][BCOMP] = 1.0F - src[i][ACOMP];

-            }

-            break;

-         default:

-            _mesa_problem(ctx, "Bad operandRGB");

-         }

-      }

-   }

-

-   /*

-    * Set up the argA[term] pointers

-    */

-   for (term = 0; term < numArgsA; term++) {

-      const GLenum srcA = combine->SourceA[term];

-      const GLenum operandA = combine->OperandA[term];

-

-      switch (srcA) {

-         case GL_TEXTURE:

-            argA[term] = get_texel_array(swrast, unit);

-            break;

-         case GL_PRIMARY_COLOR:

-            argA[term] = primary_rgba;

-            break;

-         case GL_PREVIOUS:

-            argA[term] = rgba;

-            break;

-         case GL_CONSTANT:

-            {

-               float4_array c = ccolor[term];

-               GLfloat alpha = textureUnit->EnvColor[3];

-               for (i = 0; i < n; i++)

-                  c[i][ACOMP] = alpha;

-               argA[term] = ccolor[term];

-            }

-            break;

-	 /* GL_ATI_texture_env_combine3 allows GL_ZERO & GL_ONE as sources.

-	  */

-	 case GL_ZERO:

-            {

-               float4_array c = ccolor[term];

-               for (i = 0; i < n; i++)

-                  c[i][ACOMP] = 0.0F;

-               argA[term] = ccolor[term];

-            }

-            break;

-	 case GL_ONE:

-            {

-               float4_array c = ccolor[term];

-               for (i = 0; i < n; i++)

-                  c[i][ACOMP] = 1.0F;

-               argA[term] = ccolor[term];

-            }

-            break;

-         default:

-            /* ARB_texture_env_crossbar source */

-            {

-               const GLuint srcUnit = srcA - GL_TEXTURE0;

-               ASSERT(srcUnit < ctx->Const.MaxTextureUnits);

-               if (!ctx->Texture.Unit[srcUnit]._ReallyEnabled)

-                  goto end;

-               argA[term] = get_texel_array(swrast, srcUnit);

-            }

-      }

-

-      if (operandA == GL_ONE_MINUS_SRC_ALPHA) {

-         float4_array src = argA[term];

-         float4_array dst = ccolor[term];

-         argA[term] = ccolor[term];

-         for (i = 0; i < n; i++) {

-            dst[i][ACOMP] = 1.0F - src[i][ACOMP];

-         }

-      }

-   }

-

-   /* RGB channel combine */

-   {

-      float4_array arg0 = argRGB[0];

-      float4_array arg1 = argRGB[1];

-      float4_array arg2 = argRGB[2];

-      float4_array arg3 = argRGB[3];

-

-      switch (combine->ModeRGB) {

-      case GL_REPLACE:

-         for (i = 0; i < n; i++) {

-            rgba[i][RCOMP] = arg0[i][RCOMP] * scaleRGB;

-            rgba[i][GCOMP] = arg0[i][GCOMP] * scaleRGB;

-            rgba[i][BCOMP] = arg0[i][BCOMP] * scaleRGB;

-         }

-         break;

-      case GL_MODULATE:

-         for (i = 0; i < n; i++) {

-            rgba[i][RCOMP] = arg0[i][RCOMP] * arg1[i][RCOMP] * scaleRGB;

-            rgba[i][GCOMP] = arg0[i][GCOMP] * arg1[i][GCOMP] * scaleRGB;

-            rgba[i][BCOMP] = arg0[i][BCOMP] * arg1[i][BCOMP] * scaleRGB;

-         }

-         break;

-      case GL_ADD:

-         if (textureUnit->EnvMode == GL_COMBINE4_NV) {

-            /* (a * b) + (c * d) */

-            for (i = 0; i < n; i++) {

-               rgba[i][RCOMP] = (arg0[i][RCOMP] * arg1[i][RCOMP] +

-                                 arg2[i][RCOMP] * arg3[i][RCOMP]) * scaleRGB;

-               rgba[i][GCOMP] = (arg0[i][GCOMP] * arg1[i][GCOMP] +

-                                 arg2[i][GCOMP] * arg3[i][GCOMP]) * scaleRGB;

-               rgba[i][BCOMP] = (arg0[i][BCOMP] * arg1[i][BCOMP] +

-                                 arg2[i][BCOMP] * arg3[i][BCOMP]) * scaleRGB;

-            }

-         }

-         else {

-            /* 2-term addition */

-            for (i = 0; i < n; i++) {

-               rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP]) * scaleRGB;

-               rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP]) * scaleRGB;

-               rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP]) * scaleRGB;

-            }

-         }

-         break;

-      case GL_ADD_SIGNED:

-         if (textureUnit->EnvMode == GL_COMBINE4_NV) {

-            /* (a * b) + (c * d) - 0.5 */

-            for (i = 0; i < n; i++) {

-               rgba[i][RCOMP] = (arg0[i][RCOMP] * arg1[i][RCOMP] +

-                                 arg2[i][RCOMP] * arg3[i][RCOMP] - 0.5F) * scaleRGB;

-               rgba[i][GCOMP] = (arg0[i][GCOMP] * arg1[i][GCOMP] +

-                                 arg2[i][GCOMP] * arg3[i][GCOMP] - 0.5F) * scaleRGB;

-               rgba[i][BCOMP] = (arg0[i][BCOMP] * arg1[i][BCOMP] +

-                                 arg2[i][BCOMP] * arg3[i][BCOMP] - 0.5F) * scaleRGB;

-            }

-         }

-         else {

-            for (i = 0; i < n; i++) {

-               rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP] - 0.5F) * scaleRGB;

-               rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP] - 0.5F) * scaleRGB;

-               rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP] - 0.5F) * scaleRGB;

-            }

-         }

-         break;

-      case GL_INTERPOLATE:

-         for (i = 0; i < n; i++) {

-            rgba[i][RCOMP] = (arg0[i][RCOMP] * arg2[i][RCOMP] +

-                          arg1[i][RCOMP] * (1.0F - arg2[i][RCOMP])) * scaleRGB;

-            rgba[i][GCOMP] = (arg0[i][GCOMP] * arg2[i][GCOMP] +

-                          arg1[i][GCOMP] * (1.0F - arg2[i][GCOMP])) * scaleRGB;

-            rgba[i][BCOMP] = (arg0[i][BCOMP] * arg2[i][BCOMP] +

-                          arg1[i][BCOMP] * (1.0F - arg2[i][BCOMP])) * scaleRGB;

-         }

-         break;

-      case GL_SUBTRACT:

-         for (i = 0; i < n; i++) {

-            rgba[i][RCOMP] = (arg0[i][RCOMP] - arg1[i][RCOMP]) * scaleRGB;

-            rgba[i][GCOMP] = (arg0[i][GCOMP] - arg1[i][GCOMP]) * scaleRGB;

-            rgba[i][BCOMP] = (arg0[i][BCOMP] - arg1[i][BCOMP]) * scaleRGB;

-         }

-         break;

-      case GL_DOT3_RGB_EXT:

-      case GL_DOT3_RGBA_EXT:

-         /* Do not scale the result by 1 2 or 4 */

-         for (i = 0; i < n; i++) {

-            GLfloat dot = ((arg0[i][RCOMP] - 0.5F) * (arg1[i][RCOMP] - 0.5F) +

-                           (arg0[i][GCOMP] - 0.5F) * (arg1[i][GCOMP] - 0.5F) +

-                           (arg0[i][BCOMP] - 0.5F) * (arg1[i][BCOMP] - 0.5F))

-               * 4.0F;

-            dot = CLAMP(dot, 0.0F, 1.0F);

-            rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = dot;

-         }

-         break;

-      case GL_DOT3_RGB:

-      case GL_DOT3_RGBA:

-         /* DO scale the result by 1 2 or 4 */

-         for (i = 0; i < n; i++) {

-            GLfloat dot = ((arg0[i][RCOMP] - 0.5F) * (arg1[i][RCOMP] - 0.5F) +

-                           (arg0[i][GCOMP] - 0.5F) * (arg1[i][GCOMP] - 0.5F) +

-                           (arg0[i][BCOMP] - 0.5F) * (arg1[i][BCOMP] - 0.5F))

-               * 4.0F * scaleRGB;

-            dot = CLAMP(dot, 0.0F, 1.0F);

-            rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = dot;

-         }

-         break;

-      case GL_MODULATE_ADD_ATI:

-         for (i = 0; i < n; i++) {

-            rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) +

-                              arg1[i][RCOMP]) * scaleRGB;

-            rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) +

-                              arg1[i][GCOMP]) * scaleRGB;

-            rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) +

-                              arg1[i][BCOMP]) * scaleRGB;

-	 }

-         break;

-      case GL_MODULATE_SIGNED_ADD_ATI:

-         for (i = 0; i < n; i++) {

-            rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) +

-                              arg1[i][RCOMP] - 0.5F) * scaleRGB;

-            rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) +

-                              arg1[i][GCOMP] - 0.5F) * scaleRGB;

-            rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) +

-                              arg1[i][BCOMP] - 0.5F) * scaleRGB;

-	 }

-         break;

-      case GL_MODULATE_SUBTRACT_ATI:

-         for (i = 0; i < n; i++) {

-            rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) -

-                              arg1[i][RCOMP]) * scaleRGB;

-            rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) -

-                              arg1[i][GCOMP]) * scaleRGB;

-            rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) -

-                              arg1[i][BCOMP]) * scaleRGB;

-	 }

-         break;

-      case GL_BUMP_ENVMAP_ATI:

-         /* this produces a fixed rgba color, and the coord calc is done elsewhere */

-         for (i = 0; i < n; i++) {

-            /* rgba result is 0,0,0,1 */

-            rgba[i][RCOMP] = 0.0;

-            rgba[i][GCOMP] = 0.0;

-            rgba[i][BCOMP] = 0.0;

-            rgba[i][ACOMP] = 1.0;

-	 }

-         goto end; /* no alpha processing */

-      default:

-         _mesa_problem(ctx, "invalid combine mode");

-      }

-   }

-

-   /* Alpha channel combine */

-   {

-      float4_array arg0 = argA[0];

-      float4_array arg1 = argA[1];

-      float4_array arg2 = argA[2];

-      float4_array arg3 = argA[3];

-

-      switch (combine->ModeA) {

-      case GL_REPLACE:

-         for (i = 0; i < n; i++) {

-            rgba[i][ACOMP] = arg0[i][ACOMP] * scaleA;

-         }

-         break;

-      case GL_MODULATE:

-         for (i = 0; i < n; i++) {

-            rgba[i][ACOMP] = arg0[i][ACOMP] * arg1[i][ACOMP] * scaleA;

-         }

-         break;

-      case GL_ADD:

-         if (textureUnit->EnvMode == GL_COMBINE4_NV) {

-            /* (a * b) + (c * d) */

-            for (i = 0; i < n; i++) {

-               rgba[i][ACOMP] = (arg0[i][ACOMP] * arg1[i][ACOMP] +

-                                 arg2[i][ACOMP] * arg3[i][ACOMP]) * scaleA;

-            }

-         }

-         else {

-            /* two-term add */

-            for (i = 0; i < n; i++) {

-               rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP]) * scaleA;

-            }

-         }

-         break;

-      case GL_ADD_SIGNED:

-         if (textureUnit->EnvMode == GL_COMBINE4_NV) {

-            /* (a * b) + (c * d) - 0.5 */

-            for (i = 0; i < n; i++) {

-               rgba[i][ACOMP] = (arg0[i][ACOMP] * arg1[i][ACOMP] +

-                                 arg2[i][ACOMP] * arg3[i][ACOMP] -

-                                 0.5F) * scaleA;

-            }

-         }

-         else {

-            /* a + b - 0.5 */

-            for (i = 0; i < n; i++) {

-               rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP] - 0.5F) * scaleA;

-            }

-         }

-         break;

-      case GL_INTERPOLATE:

-         for (i = 0; i < n; i++) {

-            rgba[i][ACOMP] = (arg0[i][ACOMP] * arg2[i][ACOMP] +

-                              arg1[i][ACOMP] * (1.0F - arg2[i][ACOMP]))

-               * scaleA;

-         }

-         break;

-      case GL_SUBTRACT:

-         for (i = 0; i < n; i++) {

-            rgba[i][ACOMP] = (arg0[i][ACOMP] - arg1[i][ACOMP]) * scaleA;

-         }

-         break;

-      case GL_MODULATE_ADD_ATI:

-         for (i = 0; i < n; i++) {

-            rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP])

-                              + arg1[i][ACOMP]) * scaleA;

-         }

-         break;

-      case GL_MODULATE_SIGNED_ADD_ATI:

-         for (i = 0; i < n; i++) {

-            rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP]) +

-                              arg1[i][ACOMP] - 0.5F) * scaleA;

-         }

-         break;

-      case GL_MODULATE_SUBTRACT_ATI:

-         for (i = 0; i < n; i++) {

-            rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP])

-                              - arg1[i][ACOMP]) * scaleA;

-         }

-         break;

-      default:

-         _mesa_problem(ctx, "invalid combine mode");

-      }

-   }

-

-   /* Fix the alpha component for GL_DOT3_RGBA_EXT/ARB combining.

-    * This is kind of a kludge.  It would have been better if the spec

-    * were written such that the GL_COMBINE_ALPHA value could be set to

-    * GL_DOT3.

-    */

-   if (combine->ModeRGB == GL_DOT3_RGBA_EXT ||

-       combine->ModeRGB == GL_DOT3_RGBA) {

-      for (i = 0; i < n; i++) {

-	 rgba[i][ACOMP] = rgba[i][RCOMP];

-      }

-   }

-

-   for (i = 0; i < n; i++) {

-      UNCLAMPED_FLOAT_TO_CHAN(rgbaChan[i][RCOMP], rgba[i][RCOMP]);

-      UNCLAMPED_FLOAT_TO_CHAN(rgbaChan[i][GCOMP], rgba[i][GCOMP]);

-      UNCLAMPED_FLOAT_TO_CHAN(rgbaChan[i][BCOMP], rgba[i][BCOMP]);

-      UNCLAMPED_FLOAT_TO_CHAN(rgbaChan[i][ACOMP], rgba[i][ACOMP]);

-   }

-

-end:

-   for (i = 0; i < numArgsRGB || i < numArgsA; i++) {

-      free(ccolor[i]);

-   }

-   free(rgba);

-}

-

-

-/**

- * Apply X/Y/Z/W/0/1 swizzle to an array of colors/texels.

- * See GL_EXT_texture_swizzle.

- */

-static void

-swizzle_texels(GLuint swizzle, GLuint count, float4_array texels)

-{

-   const GLuint swzR = GET_SWZ(swizzle, 0);

-   const GLuint swzG = GET_SWZ(swizzle, 1);

-   const GLuint swzB = GET_SWZ(swizzle, 2);

-   const GLuint swzA = GET_SWZ(swizzle, 3);

-   GLfloat vector[6];

-   GLuint i;

-

-   vector[SWIZZLE_ZERO] = 0;

-   vector[SWIZZLE_ONE] = 1.0F;

-

-   for (i = 0; i < count; i++) {

-      vector[SWIZZLE_X] = texels[i][0];

-      vector[SWIZZLE_Y] = texels[i][1];

-      vector[SWIZZLE_Z] = texels[i][2];

-      vector[SWIZZLE_W] = texels[i][3];

-      texels[i][RCOMP] = vector[swzR];

-      texels[i][GCOMP] = vector[swzG];

-      texels[i][BCOMP] = vector[swzB];

-      texels[i][ACOMP] = vector[swzA];

-   }

-}

-

-

-/**

- * Apply texture mapping to a span of fragments.

- */

-void

-_swrast_texture_span( struct gl_context *ctx, SWspan *span )

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   float4_array primary_rgba;

-   GLuint unit;

-

-   primary_rgba = (float4_array) malloc(span->end * 4 * sizeof(GLfloat));

-

-   if (!primary_rgba) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture_span");

-      return;

-   }

-

-   ASSERT(span->end <= MAX_WIDTH);

-

-   /*

-    * Save copy of the incoming fragment colors (the GL_PRIMARY_COLOR)

-    */

-   if (swrast->_TextureCombinePrimary) {

-      GLuint i;

-      for (i = 0; i < span->end; i++) {

-         primary_rgba[i][RCOMP] = CHAN_TO_FLOAT(span->array->rgba[i][RCOMP]);

-         primary_rgba[i][GCOMP] = CHAN_TO_FLOAT(span->array->rgba[i][GCOMP]);

-         primary_rgba[i][BCOMP] = CHAN_TO_FLOAT(span->array->rgba[i][BCOMP]);

-         primary_rgba[i][ACOMP] = CHAN_TO_FLOAT(span->array->rgba[i][ACOMP]);

-      }

-   }

-

-   /* First must sample all bump maps */

-   for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {

-      const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];

-

-      if (texUnit->_ReallyEnabled &&

-         texUnit->_CurrentCombine->ModeRGB == GL_BUMP_ENVMAP_ATI) {

-         const GLfloat (*texcoords)[4] = (const GLfloat (*)[4])

-            span->array->attribs[FRAG_ATTRIB_TEX0 + unit];

-         float4_array targetcoords =

-            span->array->attribs[FRAG_ATTRIB_TEX0 +

-               ctx->Texture.Unit[unit].BumpTarget - GL_TEXTURE0];

-

-         const struct gl_texture_object *curObj = texUnit->_Current;

-         GLfloat *lambda = span->array->lambda[unit];

-         float4_array texels = get_texel_array(swrast, unit);

-         GLuint i;

-         GLfloat rotMatrix00 = ctx->Texture.Unit[unit].RotMatrix[0];

-         GLfloat rotMatrix01 = ctx->Texture.Unit[unit].RotMatrix[1];

-         GLfloat rotMatrix10 = ctx->Texture.Unit[unit].RotMatrix[2];

-         GLfloat rotMatrix11 = ctx->Texture.Unit[unit].RotMatrix[3];

-

-         /* adjust texture lod (lambda) */

-         if (span->arrayMask & SPAN_LAMBDA) {

-            if (texUnit->LodBias + curObj->LodBias != 0.0F) {

-               /* apply LOD bias, but don't clamp yet */

-               const GLfloat bias = CLAMP(texUnit->LodBias + curObj->LodBias,

-                                          -ctx->Const.MaxTextureLodBias,

-                                          ctx->Const.MaxTextureLodBias);

-               GLuint i;

-               for (i = 0; i < span->end; i++) {

-                  lambda[i] += bias;

-               }

-            }

-

-            if (curObj->MinLod != -1000.0 || curObj->MaxLod != 1000.0) {

-               /* apply LOD clamping to lambda */

-               const GLfloat min = curObj->MinLod;

-               const GLfloat max = curObj->MaxLod;

-               GLuint i;

-               for (i = 0; i < span->end; i++) {

-                  GLfloat l = lambda[i];

-                  lambda[i] = CLAMP(l, min, max);

-               }

-            }

-         }

-

-         /* Sample the texture (span->end = number of fragments) */

-         swrast->TextureSample[unit]( ctx, texUnit->_Current, span->end,

-                                      texcoords, lambda, texels );

-

-         /* manipulate the span values of the bump target

-            not sure this can work correctly even ignoring

-            the problem that channel is unsigned */

-         for (i = 0; i < span->end; i++) {

-            targetcoords[i][0] += (texels[i][0] * rotMatrix00 + texels[i][1] *

-                                  rotMatrix01) / targetcoords[i][3];

-            targetcoords[i][1] += (texels[i][0] * rotMatrix10 + texels[i][1] *

-                                  rotMatrix11) / targetcoords[i][3];

-         }

-      }

-   }

-

-   /*

-    * Must do all texture sampling before combining in order to

-    * accomodate GL_ARB_texture_env_crossbar.

-    */

-   for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {

-      const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];

-      if (texUnit->_ReallyEnabled &&

-          texUnit->_CurrentCombine->ModeRGB != GL_BUMP_ENVMAP_ATI) {

-         const GLfloat (*texcoords)[4] = (const GLfloat (*)[4])

-            span->array->attribs[FRAG_ATTRIB_TEX0 + unit];

-         const struct gl_texture_object *curObj = texUnit->_Current;

-         GLfloat *lambda = span->array->lambda[unit];

-         float4_array texels = get_texel_array(swrast, unit);

-

-         /* adjust texture lod (lambda) */

-         if (span->arrayMask & SPAN_LAMBDA) {

-            if (texUnit->LodBias + curObj->LodBias != 0.0F) {

-               /* apply LOD bias, but don't clamp yet */

-               const GLfloat bias = CLAMP(texUnit->LodBias + curObj->LodBias,

-                                          -ctx->Const.MaxTextureLodBias,

-                                          ctx->Const.MaxTextureLodBias);

-               GLuint i;

-               for (i = 0; i < span->end; i++) {

-                  lambda[i] += bias;

-               }

-            }

-

-            if (curObj->MinLod != -1000.0 || curObj->MaxLod != 1000.0) {

-               /* apply LOD clamping to lambda */

-               const GLfloat min = curObj->MinLod;

-               const GLfloat max = curObj->MaxLod;

-               GLuint i;

-               for (i = 0; i < span->end; i++) {

-                  GLfloat l = lambda[i];

-                  lambda[i] = CLAMP(l, min, max);

-               }

-            }

-         }

-

-         /* Sample the texture (span->end = number of fragments) */

-         swrast->TextureSample[unit]( ctx, texUnit->_Current, span->end,

-                                      texcoords, lambda, texels );

-

-         /* GL_SGI_texture_color_table */

-         if (texUnit->ColorTableEnabled) {

-            _mesa_lookup_rgba_float(&texUnit->ColorTable, span->end, texels);

-         }

-

-         /* GL_EXT_texture_swizzle */

-         if (curObj->_Swizzle != SWIZZLE_NOOP) {

-            swizzle_texels(curObj->_Swizzle, span->end, texels);

-         }

-      }

-   }

-

-   /*

-    * OK, now apply the texture (aka texture combine/blend).

-    * We modify the span->color.rgba values.

-    */

-   for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {

-      if (ctx->Texture.Unit[unit]._ReallyEnabled) {

-         texture_combine( ctx, unit, span->end,

-                          primary_rgba,

-                          swrast->TexelBuffer,

-                          span->array->rgba );

-      }

-   }

-

-   free(primary_rgba);

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.5
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/colormac.h"
+#include "main/imports.h"
+#include "main/pixeltransfer.h"
+#include "program/prog_instruction.h"
+
+#include "s_context.h"
+#include "s_texcombine.h"
+
+
+/**
+ * Pointer to array of float[4]
+ * This type makes the code below more concise and avoids a lot of casting.
+ */
+typedef float (*float4_array)[4];
+
+
+/**
+ * Return array of texels for given unit.
+ */
+static INLINE float4_array
+get_texel_array(SWcontext *swrast, GLuint unit)
+{
+   return (float4_array) (swrast->TexelBuffer + unit * MAX_WIDTH * 4);
+}
+
+
+
+/**
+ * Do texture application for:
+ *  GL_EXT_texture_env_combine
+ *  GL_ARB_texture_env_combine
+ *  GL_EXT_texture_env_dot3
+ *  GL_ARB_texture_env_dot3
+ *  GL_ATI_texture_env_combine3
+ *  GL_NV_texture_env_combine4
+ *  conventional GL texture env modes
+ *
+ * \param ctx          rendering context
+ * \param unit         the texture combiner unit
+ * \param n            number of fragments to process (span width)
+ * \param primary_rgba incoming fragment color array
+ * \param texelBuffer  pointer to texel colors for all texture units
+ * 
+ * \param rgba         incoming/result fragment colors
+ */
+static void
+texture_combine( struct gl_context *ctx, GLuint unit, GLuint n,
+                 const float4_array primary_rgba,
+                 const GLfloat *texelBuffer,
+                 GLchan (*rgbaChan)[4] )
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   const struct gl_texture_unit *textureUnit = &(ctx->Texture.Unit[unit]);
+   const struct gl_tex_env_combine_state *combine = textureUnit->_CurrentCombine;
+   float4_array argRGB[MAX_COMBINER_TERMS];
+   float4_array argA[MAX_COMBINER_TERMS];
+   const GLfloat scaleRGB = (GLfloat) (1 << combine->ScaleShiftRGB);
+   const GLfloat scaleA = (GLfloat) (1 << combine->ScaleShiftA);
+   const GLuint numArgsRGB = combine->_NumArgsRGB;
+   const GLuint numArgsA = combine->_NumArgsA;
+   float4_array ccolor[4], rgba;
+   GLuint i, term;
+
+   /* alloc temp pixel buffers */
+   rgba = (float4_array) malloc(4 * n * sizeof(GLfloat));
+   if (!rgba) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture_combine");
+      return;
+   }
+
+   for (i = 0; i < numArgsRGB || i < numArgsA; i++) {
+      ccolor[i] = (float4_array) malloc(4 * n * sizeof(GLfloat));
+      if (!ccolor[i]) {
+         while (i) {
+            free(ccolor[i]);
+            i--;
+         }
+         _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture_combine");
+         return;
+      }
+   }
+
+   for (i = 0; i < n; i++) {
+      rgba[i][RCOMP] = CHAN_TO_FLOAT(rgbaChan[i][RCOMP]);
+      rgba[i][GCOMP] = CHAN_TO_FLOAT(rgbaChan[i][GCOMP]);
+      rgba[i][BCOMP] = CHAN_TO_FLOAT(rgbaChan[i][BCOMP]);
+      rgba[i][ACOMP] = CHAN_TO_FLOAT(rgbaChan[i][ACOMP]);
+   }
+
+   /*
+   printf("modeRGB 0x%x  modeA 0x%x  srcRGB1 0x%x  srcA1 0x%x  srcRGB2 0x%x  srcA2 0x%x\n",
+          combine->ModeRGB,
+          combine->ModeA,
+          combine->SourceRGB[0],
+          combine->SourceA[0],
+          combine->SourceRGB[1],
+          combine->SourceA[1]);
+   */
+
+   /*
+    * Do operand setup for up to 4 operands.  Loop over the terms.
+    */
+   for (term = 0; term < numArgsRGB; term++) {
+      const GLenum srcRGB = combine->SourceRGB[term];
+      const GLenum operandRGB = combine->OperandRGB[term];
+
+      switch (srcRGB) {
+         case GL_TEXTURE:
+            argRGB[term] = get_texel_array(swrast, unit);
+            break;
+         case GL_PRIMARY_COLOR:
+            argRGB[term] = primary_rgba;
+            break;
+         case GL_PREVIOUS:
+            argRGB[term] = rgba;
+            break;
+         case GL_CONSTANT:
+            {
+               float4_array c = ccolor[term];
+               GLfloat red   = textureUnit->EnvColor[0];
+               GLfloat green = textureUnit->EnvColor[1];
+               GLfloat blue  = textureUnit->EnvColor[2];
+               GLfloat alpha = textureUnit->EnvColor[3];
+               for (i = 0; i < n; i++) {
+                  ASSIGN_4V(c[i], red, green, blue, alpha);
+               }
+               argRGB[term] = ccolor[term];
+            }
+            break;
+	 /* GL_ATI_texture_env_combine3 allows GL_ZERO & GL_ONE as sources.
+	  */
+	 case GL_ZERO:
+            {
+               float4_array c = ccolor[term];
+               for (i = 0; i < n; i++) {
+                  ASSIGN_4V(c[i], 0.0F, 0.0F, 0.0F, 0.0F);
+               }
+               argRGB[term] = ccolor[term];
+            }
+            break;
+	 case GL_ONE:
+            {
+               float4_array c = ccolor[term];
+               for (i = 0; i < n; i++) {
+                  ASSIGN_4V(c[i], 1.0F, 1.0F, 1.0F, 1.0F);
+               }
+               argRGB[term] = ccolor[term];
+            }
+            break;
+         default:
+            /* ARB_texture_env_crossbar source */
+            {
+               const GLuint srcUnit = srcRGB - GL_TEXTURE0;
+               ASSERT(srcUnit < ctx->Const.MaxTextureUnits);
+               if (!ctx->Texture.Unit[srcUnit]._ReallyEnabled)
+                  goto end;
+               argRGB[term] = get_texel_array(swrast, srcUnit);
+            }
+      }
+
+      if (operandRGB != GL_SRC_COLOR) {
+         float4_array src = argRGB[term];
+         float4_array dst = ccolor[term];
+
+         /* point to new arg[term] storage */
+         argRGB[term] = ccolor[term];
+
+         switch (operandRGB) {
+         case GL_ONE_MINUS_SRC_COLOR:
+            for (i = 0; i < n; i++) {
+               dst[i][RCOMP] = 1.0F - src[i][RCOMP];
+               dst[i][GCOMP] = 1.0F - src[i][GCOMP];
+               dst[i][BCOMP] = 1.0F - src[i][BCOMP];
+            }
+            break;
+         case GL_SRC_ALPHA:
+            for (i = 0; i < n; i++) {
+               dst[i][RCOMP] =
+               dst[i][GCOMP] =
+               dst[i][BCOMP] = src[i][ACOMP];
+            }
+            break;
+         case GL_ONE_MINUS_SRC_ALPHA:
+            for (i = 0; i < n; i++) {
+               dst[i][RCOMP] =
+               dst[i][GCOMP] =
+               dst[i][BCOMP] = 1.0F - src[i][ACOMP];
+            }
+            break;
+         default:
+            _mesa_problem(ctx, "Bad operandRGB");
+         }
+      }
+   }
+
+   /*
+    * Set up the argA[term] pointers
+    */
+   for (term = 0; term < numArgsA; term++) {
+      const GLenum srcA = combine->SourceA[term];
+      const GLenum operandA = combine->OperandA[term];
+
+      switch (srcA) {
+         case GL_TEXTURE:
+            argA[term] = get_texel_array(swrast, unit);
+            break;
+         case GL_PRIMARY_COLOR:
+            argA[term] = primary_rgba;
+            break;
+         case GL_PREVIOUS:
+            argA[term] = rgba;
+            break;
+         case GL_CONSTANT:
+            {
+               float4_array c = ccolor[term];
+               GLfloat alpha = textureUnit->EnvColor[3];
+               for (i = 0; i < n; i++)
+                  c[i][ACOMP] = alpha;
+               argA[term] = ccolor[term];
+            }
+            break;
+	 /* GL_ATI_texture_env_combine3 allows GL_ZERO & GL_ONE as sources.
+	  */
+	 case GL_ZERO:
+            {
+               float4_array c = ccolor[term];
+               for (i = 0; i < n; i++)
+                  c[i][ACOMP] = 0.0F;
+               argA[term] = ccolor[term];
+            }
+            break;
+	 case GL_ONE:
+            {
+               float4_array c = ccolor[term];
+               for (i = 0; i < n; i++)
+                  c[i][ACOMP] = 1.0F;
+               argA[term] = ccolor[term];
+            }
+            break;
+         default:
+            /* ARB_texture_env_crossbar source */
+            {
+               const GLuint srcUnit = srcA - GL_TEXTURE0;
+               ASSERT(srcUnit < ctx->Const.MaxTextureUnits);
+               if (!ctx->Texture.Unit[srcUnit]._ReallyEnabled)
+                  goto end;
+               argA[term] = get_texel_array(swrast, srcUnit);
+            }
+      }
+
+      if (operandA == GL_ONE_MINUS_SRC_ALPHA) {
+         float4_array src = argA[term];
+         float4_array dst = ccolor[term];
+         argA[term] = ccolor[term];
+         for (i = 0; i < n; i++) {
+            dst[i][ACOMP] = 1.0F - src[i][ACOMP];
+         }
+      }
+   }
+
+   /* RGB channel combine */
+   {
+      float4_array arg0 = argRGB[0];
+      float4_array arg1 = argRGB[1];
+      float4_array arg2 = argRGB[2];
+      float4_array arg3 = argRGB[3];
+
+      switch (combine->ModeRGB) {
+      case GL_REPLACE:
+         for (i = 0; i < n; i++) {
+            rgba[i][RCOMP] = arg0[i][RCOMP] * scaleRGB;
+            rgba[i][GCOMP] = arg0[i][GCOMP] * scaleRGB;
+            rgba[i][BCOMP] = arg0[i][BCOMP] * scaleRGB;
+         }
+         break;
+      case GL_MODULATE:
+         for (i = 0; i < n; i++) {
+            rgba[i][RCOMP] = arg0[i][RCOMP] * arg1[i][RCOMP] * scaleRGB;
+            rgba[i][GCOMP] = arg0[i][GCOMP] * arg1[i][GCOMP] * scaleRGB;
+            rgba[i][BCOMP] = arg0[i][BCOMP] * arg1[i][BCOMP] * scaleRGB;
+         }
+         break;
+      case GL_ADD:
+         if (textureUnit->EnvMode == GL_COMBINE4_NV) {
+            /* (a * b) + (c * d) */
+            for (i = 0; i < n; i++) {
+               rgba[i][RCOMP] = (arg0[i][RCOMP] * arg1[i][RCOMP] +
+                                 arg2[i][RCOMP] * arg3[i][RCOMP]) * scaleRGB;
+               rgba[i][GCOMP] = (arg0[i][GCOMP] * arg1[i][GCOMP] +
+                                 arg2[i][GCOMP] * arg3[i][GCOMP]) * scaleRGB;
+               rgba[i][BCOMP] = (arg0[i][BCOMP] * arg1[i][BCOMP] +
+                                 arg2[i][BCOMP] * arg3[i][BCOMP]) * scaleRGB;
+            }
+         }
+         else {
+            /* 2-term addition */
+            for (i = 0; i < n; i++) {
+               rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP]) * scaleRGB;
+               rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP]) * scaleRGB;
+               rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP]) * scaleRGB;
+            }
+         }
+         break;
+      case GL_ADD_SIGNED:
+         if (textureUnit->EnvMode == GL_COMBINE4_NV) {
+            /* (a * b) + (c * d) - 0.5 */
+            for (i = 0; i < n; i++) {
+               rgba[i][RCOMP] = (arg0[i][RCOMP] * arg1[i][RCOMP] +
+                                 arg2[i][RCOMP] * arg3[i][RCOMP] - 0.5F) * scaleRGB;
+               rgba[i][GCOMP] = (arg0[i][GCOMP] * arg1[i][GCOMP] +
+                                 arg2[i][GCOMP] * arg3[i][GCOMP] - 0.5F) * scaleRGB;
+               rgba[i][BCOMP] = (arg0[i][BCOMP] * arg1[i][BCOMP] +
+                                 arg2[i][BCOMP] * arg3[i][BCOMP] - 0.5F) * scaleRGB;
+            }
+         }
+         else {
+            for (i = 0; i < n; i++) {
+               rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP] - 0.5F) * scaleRGB;
+               rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP] - 0.5F) * scaleRGB;
+               rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP] - 0.5F) * scaleRGB;
+            }
+         }
+         break;
+      case GL_INTERPOLATE:
+         for (i = 0; i < n; i++) {
+            rgba[i][RCOMP] = (arg0[i][RCOMP] * arg2[i][RCOMP] +
+                          arg1[i][RCOMP] * (1.0F - arg2[i][RCOMP])) * scaleRGB;
+            rgba[i][GCOMP] = (arg0[i][GCOMP] * arg2[i][GCOMP] +
+                          arg1[i][GCOMP] * (1.0F - arg2[i][GCOMP])) * scaleRGB;
+            rgba[i][BCOMP] = (arg0[i][BCOMP] * arg2[i][BCOMP] +
+                          arg1[i][BCOMP] * (1.0F - arg2[i][BCOMP])) * scaleRGB;
+         }
+         break;
+      case GL_SUBTRACT:
+         for (i = 0; i < n; i++) {
+            rgba[i][RCOMP] = (arg0[i][RCOMP] - arg1[i][RCOMP]) * scaleRGB;
+            rgba[i][GCOMP] = (arg0[i][GCOMP] - arg1[i][GCOMP]) * scaleRGB;
+            rgba[i][BCOMP] = (arg0[i][BCOMP] - arg1[i][BCOMP]) * scaleRGB;
+         }
+         break;
+      case GL_DOT3_RGB_EXT:
+      case GL_DOT3_RGBA_EXT:
+         /* Do not scale the result by 1 2 or 4 */
+         for (i = 0; i < n; i++) {
+            GLfloat dot = ((arg0[i][RCOMP] - 0.5F) * (arg1[i][RCOMP] - 0.5F) +
+                           (arg0[i][GCOMP] - 0.5F) * (arg1[i][GCOMP] - 0.5F) +
+                           (arg0[i][BCOMP] - 0.5F) * (arg1[i][BCOMP] - 0.5F))
+               * 4.0F;
+            dot = CLAMP(dot, 0.0F, 1.0F);
+            rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = dot;
+         }
+         break;
+      case GL_DOT3_RGB:
+      case GL_DOT3_RGBA:
+         /* DO scale the result by 1 2 or 4 */
+         for (i = 0; i < n; i++) {
+            GLfloat dot = ((arg0[i][RCOMP] - 0.5F) * (arg1[i][RCOMP] - 0.5F) +
+                           (arg0[i][GCOMP] - 0.5F) * (arg1[i][GCOMP] - 0.5F) +
+                           (arg0[i][BCOMP] - 0.5F) * (arg1[i][BCOMP] - 0.5F))
+               * 4.0F * scaleRGB;
+            dot = CLAMP(dot, 0.0F, 1.0F);
+            rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = dot;
+         }
+         break;
+      case GL_MODULATE_ADD_ATI:
+         for (i = 0; i < n; i++) {
+            rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) +
+                              arg1[i][RCOMP]) * scaleRGB;
+            rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) +
+                              arg1[i][GCOMP]) * scaleRGB;
+            rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) +
+                              arg1[i][BCOMP]) * scaleRGB;
+	 }
+         break;
+      case GL_MODULATE_SIGNED_ADD_ATI:
+         for (i = 0; i < n; i++) {
+            rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) +
+                              arg1[i][RCOMP] - 0.5F) * scaleRGB;
+            rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) +
+                              arg1[i][GCOMP] - 0.5F) * scaleRGB;
+            rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) +
+                              arg1[i][BCOMP] - 0.5F) * scaleRGB;
+	 }
+         break;
+      case GL_MODULATE_SUBTRACT_ATI:
+         for (i = 0; i < n; i++) {
+            rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) -
+                              arg1[i][RCOMP]) * scaleRGB;
+            rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) -
+                              arg1[i][GCOMP]) * scaleRGB;
+            rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) -
+                              arg1[i][BCOMP]) * scaleRGB;
+	 }
+         break;
+      case GL_BUMP_ENVMAP_ATI:
+         /* this produces a fixed rgba color, and the coord calc is done elsewhere */
+         for (i = 0; i < n; i++) {
+            /* rgba result is 0,0,0,1 */
+            rgba[i][RCOMP] = 0.0;
+            rgba[i][GCOMP] = 0.0;
+            rgba[i][BCOMP] = 0.0;
+            rgba[i][ACOMP] = 1.0;
+	 }
+         goto end; /* no alpha processing */
+      default:
+         _mesa_problem(ctx, "invalid combine mode");
+      }
+   }
+
+   /* Alpha channel combine */
+   {
+      float4_array arg0 = argA[0];
+      float4_array arg1 = argA[1];
+      float4_array arg2 = argA[2];
+      float4_array arg3 = argA[3];
+
+      switch (combine->ModeA) {
+      case GL_REPLACE:
+         for (i = 0; i < n; i++) {
+            rgba[i][ACOMP] = arg0[i][ACOMP] * scaleA;
+         }
+         break;
+      case GL_MODULATE:
+         for (i = 0; i < n; i++) {
+            rgba[i][ACOMP] = arg0[i][ACOMP] * arg1[i][ACOMP] * scaleA;
+         }
+         break;
+      case GL_ADD:
+         if (textureUnit->EnvMode == GL_COMBINE4_NV) {
+            /* (a * b) + (c * d) */
+            for (i = 0; i < n; i++) {
+               rgba[i][ACOMP] = (arg0[i][ACOMP] * arg1[i][ACOMP] +
+                                 arg2[i][ACOMP] * arg3[i][ACOMP]) * scaleA;
+            }
+         }
+         else {
+            /* two-term add */
+            for (i = 0; i < n; i++) {
+               rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP]) * scaleA;
+            }
+         }
+         break;
+      case GL_ADD_SIGNED:
+         if (textureUnit->EnvMode == GL_COMBINE4_NV) {
+            /* (a * b) + (c * d) - 0.5 */
+            for (i = 0; i < n; i++) {
+               rgba[i][ACOMP] = (arg0[i][ACOMP] * arg1[i][ACOMP] +
+                                 arg2[i][ACOMP] * arg3[i][ACOMP] -
+                                 0.5F) * scaleA;
+            }
+         }
+         else {
+            /* a + b - 0.5 */
+            for (i = 0; i < n; i++) {
+               rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP] - 0.5F) * scaleA;
+            }
+         }
+         break;
+      case GL_INTERPOLATE:
+         for (i = 0; i < n; i++) {
+            rgba[i][ACOMP] = (arg0[i][ACOMP] * arg2[i][ACOMP] +
+                              arg1[i][ACOMP] * (1.0F - arg2[i][ACOMP]))
+               * scaleA;
+         }
+         break;
+      case GL_SUBTRACT:
+         for (i = 0; i < n; i++) {
+            rgba[i][ACOMP] = (arg0[i][ACOMP] - arg1[i][ACOMP]) * scaleA;
+         }
+         break;
+      case GL_MODULATE_ADD_ATI:
+         for (i = 0; i < n; i++) {
+            rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP])
+                              + arg1[i][ACOMP]) * scaleA;
+         }
+         break;
+      case GL_MODULATE_SIGNED_ADD_ATI:
+         for (i = 0; i < n; i++) {
+            rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP]) +
+                              arg1[i][ACOMP] - 0.5F) * scaleA;
+         }
+         break;
+      case GL_MODULATE_SUBTRACT_ATI:
+         for (i = 0; i < n; i++) {
+            rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP])
+                              - arg1[i][ACOMP]) * scaleA;
+         }
+         break;
+      default:
+         _mesa_problem(ctx, "invalid combine mode");
+      }
+   }
+
+   /* Fix the alpha component for GL_DOT3_RGBA_EXT/ARB combining.
+    * This is kind of a kludge.  It would have been better if the spec
+    * were written such that the GL_COMBINE_ALPHA value could be set to
+    * GL_DOT3.
+    */
+   if (combine->ModeRGB == GL_DOT3_RGBA_EXT ||
+       combine->ModeRGB == GL_DOT3_RGBA) {
+      for (i = 0; i < n; i++) {
+	 rgba[i][ACOMP] = rgba[i][RCOMP];
+      }
+   }
+
+   for (i = 0; i < n; i++) {
+      UNCLAMPED_FLOAT_TO_CHAN(rgbaChan[i][RCOMP], rgba[i][RCOMP]);
+      UNCLAMPED_FLOAT_TO_CHAN(rgbaChan[i][GCOMP], rgba[i][GCOMP]);
+      UNCLAMPED_FLOAT_TO_CHAN(rgbaChan[i][BCOMP], rgba[i][BCOMP]);
+      UNCLAMPED_FLOAT_TO_CHAN(rgbaChan[i][ACOMP], rgba[i][ACOMP]);
+   }
+
+end:
+   for (i = 0; i < numArgsRGB || i < numArgsA; i++) {
+      free(ccolor[i]);
+   }
+   free(rgba);
+}
+
+
+/**
+ * Apply X/Y/Z/W/0/1 swizzle to an array of colors/texels.
+ * See GL_EXT_texture_swizzle.
+ */
+static void
+swizzle_texels(GLuint swizzle, GLuint count, float4_array texels)
+{
+   const GLuint swzR = GET_SWZ(swizzle, 0);
+   const GLuint swzG = GET_SWZ(swizzle, 1);
+   const GLuint swzB = GET_SWZ(swizzle, 2);
+   const GLuint swzA = GET_SWZ(swizzle, 3);
+   GLfloat vector[6];
+   GLuint i;
+
+   vector[SWIZZLE_ZERO] = 0;
+   vector[SWIZZLE_ONE] = 1.0F;
+
+   for (i = 0; i < count; i++) {
+      vector[SWIZZLE_X] = texels[i][0];
+      vector[SWIZZLE_Y] = texels[i][1];
+      vector[SWIZZLE_Z] = texels[i][2];
+      vector[SWIZZLE_W] = texels[i][3];
+      texels[i][RCOMP] = vector[swzR];
+      texels[i][GCOMP] = vector[swzG];
+      texels[i][BCOMP] = vector[swzB];
+      texels[i][ACOMP] = vector[swzA];
+   }
+}
+
+
+/**
+ * Apply texture mapping to a span of fragments.
+ */
+void
+_swrast_texture_span( struct gl_context *ctx, SWspan *span )
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   float4_array primary_rgba;
+   GLuint unit;
+
+   primary_rgba = (float4_array) malloc(span->end * 4 * sizeof(GLfloat));
+
+   if (!primary_rgba) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture_span");
+      return;
+   }
+
+   ASSERT(span->end <= MAX_WIDTH);
+
+   /*
+    * Save copy of the incoming fragment colors (the GL_PRIMARY_COLOR)
+    */
+   if (swrast->_TextureCombinePrimary) {
+      GLuint i;
+      for (i = 0; i < span->end; i++) {
+         primary_rgba[i][RCOMP] = CHAN_TO_FLOAT(span->array->rgba[i][RCOMP]);
+         primary_rgba[i][GCOMP] = CHAN_TO_FLOAT(span->array->rgba[i][GCOMP]);
+         primary_rgba[i][BCOMP] = CHAN_TO_FLOAT(span->array->rgba[i][BCOMP]);
+         primary_rgba[i][ACOMP] = CHAN_TO_FLOAT(span->array->rgba[i][ACOMP]);
+      }
+   }
+
+   /* First must sample all bump maps */
+   for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
+      const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+
+      if (texUnit->_ReallyEnabled &&
+         texUnit->_CurrentCombine->ModeRGB == GL_BUMP_ENVMAP_ATI) {
+         const GLfloat (*texcoords)[4] = (const GLfloat (*)[4])
+            span->array->attribs[FRAG_ATTRIB_TEX0 + unit];
+         float4_array targetcoords =
+            span->array->attribs[FRAG_ATTRIB_TEX0 +
+               ctx->Texture.Unit[unit].BumpTarget - GL_TEXTURE0];
+
+         const struct gl_texture_object *curObj = texUnit->_Current;
+         GLfloat *lambda = span->array->lambda[unit];
+         float4_array texels = get_texel_array(swrast, unit);
+         GLuint i;
+         GLfloat rotMatrix00 = ctx->Texture.Unit[unit].RotMatrix[0];
+         GLfloat rotMatrix01 = ctx->Texture.Unit[unit].RotMatrix[1];
+         GLfloat rotMatrix10 = ctx->Texture.Unit[unit].RotMatrix[2];
+         GLfloat rotMatrix11 = ctx->Texture.Unit[unit].RotMatrix[3];
+
+         /* adjust texture lod (lambda) */
+         if (span->arrayMask & SPAN_LAMBDA) {
+            if (texUnit->LodBias + curObj->LodBias != 0.0F) {
+               /* apply LOD bias, but don't clamp yet */
+               const GLfloat bias = CLAMP(texUnit->LodBias + curObj->LodBias,
+                                          -ctx->Const.MaxTextureLodBias,
+                                          ctx->Const.MaxTextureLodBias);
+               GLuint i;
+               for (i = 0; i < span->end; i++) {
+                  lambda[i] += bias;
+               }
+            }
+
+            if (curObj->MinLod != -1000.0 || curObj->MaxLod != 1000.0) {
+               /* apply LOD clamping to lambda */
+               const GLfloat min = curObj->MinLod;
+               const GLfloat max = curObj->MaxLod;
+               GLuint i;
+               for (i = 0; i < span->end; i++) {
+                  GLfloat l = lambda[i];
+                  lambda[i] = CLAMP(l, min, max);
+               }
+            }
+         }
+
+         /* Sample the texture (span->end = number of fragments) */
+         swrast->TextureSample[unit]( ctx, texUnit->_Current, span->end,
+                                      texcoords, lambda, texels );
+
+         /* manipulate the span values of the bump target
+            not sure this can work correctly even ignoring
+            the problem that channel is unsigned */
+         for (i = 0; i < span->end; i++) {
+            targetcoords[i][0] += (texels[i][0] * rotMatrix00 + texels[i][1] *
+                                  rotMatrix01) / targetcoords[i][3];
+            targetcoords[i][1] += (texels[i][0] * rotMatrix10 + texels[i][1] *
+                                  rotMatrix11) / targetcoords[i][3];
+         }
+      }
+   }
+
+   /*
+    * Must do all texture sampling before combining in order to
+    * accomodate GL_ARB_texture_env_crossbar.
+    */
+   for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
+      const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+      if (texUnit->_ReallyEnabled &&
+          texUnit->_CurrentCombine->ModeRGB != GL_BUMP_ENVMAP_ATI) {
+         const GLfloat (*texcoords)[4] = (const GLfloat (*)[4])
+            span->array->attribs[FRAG_ATTRIB_TEX0 + unit];
+         const struct gl_texture_object *curObj = texUnit->_Current;
+         GLfloat *lambda = span->array->lambda[unit];
+         float4_array texels = get_texel_array(swrast, unit);
+
+         /* adjust texture lod (lambda) */
+         if (span->arrayMask & SPAN_LAMBDA) {
+            if (texUnit->LodBias + curObj->LodBias != 0.0F) {
+               /* apply LOD bias, but don't clamp yet */
+               const GLfloat bias = CLAMP(texUnit->LodBias + curObj->LodBias,
+                                          -ctx->Const.MaxTextureLodBias,
+                                          ctx->Const.MaxTextureLodBias);
+               GLuint i;
+               for (i = 0; i < span->end; i++) {
+                  lambda[i] += bias;
+               }
+            }
+
+            if (curObj->MinLod != -1000.0 || curObj->MaxLod != 1000.0) {
+               /* apply LOD clamping to lambda */
+               const GLfloat min = curObj->MinLod;
+               const GLfloat max = curObj->MaxLod;
+               GLuint i;
+               for (i = 0; i < span->end; i++) {
+                  GLfloat l = lambda[i];
+                  lambda[i] = CLAMP(l, min, max);
+               }
+            }
+         }
+
+         /* Sample the texture (span->end = number of fragments) */
+         swrast->TextureSample[unit]( ctx, texUnit->_Current, span->end,
+                                      texcoords, lambda, texels );
+
+         /* GL_EXT_texture_swizzle */
+         if (curObj->_Swizzle != SWIZZLE_NOOP) {
+            swizzle_texels(curObj->_Swizzle, span->end, texels);
+         }
+      }
+   }
+
+   /*
+    * OK, now apply the texture (aka texture combine/blend).
+    * We modify the span->color.rgba values.
+    */
+   for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
+      if (ctx->Texture.Unit[unit]._ReallyEnabled) {
+         texture_combine( ctx, unit, span->end,
+                          primary_rgba,
+                          swrast->TexelBuffer,
+                          span->array->rgba );
+      }
+   }
+
+   free(primary_rgba);
+}
diff --git a/mesalib/src/mesa/vbo/vbo_exec_array.c b/mesalib/src/mesa/vbo/vbo_exec_array.c
index 457343a1a..5818b134d 100644
--- a/mesalib/src/mesa/vbo/vbo_exec_array.c
+++ b/mesalib/src/mesa/vbo/vbo_exec_array.c
@@ -52,6 +52,7 @@ check_buffers_are_unmapped(const struct gl_client_array **inputs)
       if (inputs[i]) {
          struct gl_buffer_object *obj = inputs[i]->BufferObj;
          assert(!_mesa_bufferobj_mapped(obj));
+         (void) obj;
       }
    }
 #endif