svn merge ^/branches/released . --username marha

1 files changed, 271 insertions, 0 deletions

diff --git a/mesalib/src/mesa/main/getstring.c b/mesalib/src/mesa/main/getstring.c
new file mode 100644
index 000000000..6599ed969
--- /dev/null
+++ b/mesalib/src/mesa/main/getstring.c
@@ -0,0 +1,271 @@
+/*
+ * 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 "context.h"
+#include "get.h"
+#include "version.h"
+#include "enums.h"
+#include "extensions.h"
+
+
+/**
+ * Examine enabled GL extensions to determine GL version.
+ * \return version string
+ */
+static const char *
+compute_version(const GLcontext *ctx)
+{
+   static const char *version_1_2 = "1.2 Mesa " MESA_VERSION_STRING;
+   static const char *version_1_3 = "1.3 Mesa " MESA_VERSION_STRING;
+   static const char *version_1_4 = "1.4 Mesa " MESA_VERSION_STRING;
+   static const char *version_1_5 = "1.5 Mesa " MESA_VERSION_STRING;
+   static const char *version_2_0 = "2.0 Mesa " MESA_VERSION_STRING;
+   static const char *version_2_1 = "2.1 Mesa " MESA_VERSION_STRING;
+
+   const GLboolean ver_1_3 = (ctx->Extensions.ARB_multisample &&
+                              ctx->Extensions.ARB_multitexture &&
+                              ctx->Extensions.ARB_texture_border_clamp &&
+                              ctx->Extensions.ARB_texture_compression &&
+                              ctx->Extensions.ARB_texture_cube_map &&
+                              ctx->Extensions.EXT_texture_env_add &&
+                              ctx->Extensions.ARB_texture_env_combine &&
+                              ctx->Extensions.ARB_texture_env_dot3);
+   const GLboolean ver_1_4 = (ver_1_3 &&
+                              ctx->Extensions.ARB_depth_texture &&
+                              ctx->Extensions.ARB_shadow &&
+                              ctx->Extensions.ARB_texture_env_crossbar &&
+                              ctx->Extensions.ARB_texture_mirrored_repeat &&
+                              ctx->Extensions.ARB_window_pos &&
+                              ctx->Extensions.EXT_blend_color &&
+                              ctx->Extensions.EXT_blend_func_separate &&
+                              ctx->Extensions.EXT_blend_minmax &&
+                              ctx->Extensions.EXT_blend_subtract &&
+                              ctx->Extensions.EXT_fog_coord &&
+                              ctx->Extensions.EXT_multi_draw_arrays &&
+                              ctx->Extensions.EXT_point_parameters &&
+                              ctx->Extensions.EXT_secondary_color &&
+                              ctx->Extensions.EXT_stencil_wrap &&
+                              ctx->Extensions.EXT_texture_lod_bias &&
+                              ctx->Extensions.SGIS_generate_mipmap);
+   const GLboolean ver_1_5 = (ver_1_4 &&
+                              ctx->Extensions.ARB_occlusion_query &&
+                              ctx->Extensions.ARB_vertex_buffer_object &&
+                              ctx->Extensions.EXT_shadow_funcs);
+   const GLboolean ver_2_0 = (ver_1_5 &&
+                              ctx->Extensions.ARB_draw_buffers &&
+                              ctx->Extensions.ARB_point_sprite &&
+                              ctx->Extensions.ARB_shader_objects &&
+                              ctx->Extensions.ARB_vertex_shader &&
+                              ctx->Extensions.ARB_fragment_shader &&
+                              ctx->Extensions.ARB_texture_non_power_of_two &&
+                              ctx->Extensions.EXT_blend_equation_separate &&
+
+			      /* Technically, 2.0 requires the functionality
+			       * of the EXT version.  Enable 2.0 if either
+			       * extension is available, and assume that a
+			       * driver that only exposes the ATI extension
+			       * will fallback to software when necessary.
+			       */
+			      (ctx->Extensions.EXT_stencil_two_side
+			       || ctx->Extensions.ATI_separate_stencil));
+   const GLboolean ver_2_1 = (ver_2_0 &&
+                              ctx->Extensions.ARB_shading_language_120 &&
+                              ctx->Extensions.EXT_pixel_buffer_object &&
+                              ctx->Extensions.EXT_texture_sRGB);
+   if (ver_2_1)
+      return version_2_1;
+   if (ver_2_0)
+      return version_2_0;
+   if (ver_1_5)
+      return version_1_5;
+   if (ver_1_4)
+      return version_1_4;
+   if (ver_1_3)
+      return version_1_3;
+   return version_1_2;
+}
+
+
+
+/**
+ * Query string-valued state.  The return value should _not_ be freed by
+ * the caller.
+ *
+ * \param name  the state variable to query.
+ *
+ * \sa glGetString().
+ *
+ * Tries to get the string from dd_function_table::GetString, otherwise returns
+ * the hardcoded strings.
+ */
+const GLubyte * GLAPIENTRY
+_mesa_GetString( GLenum name )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   static const char *vendor = "Brian Paul";
+   static const char *renderer = "Mesa";
+
+   if (!ctx)
+      return NULL;
+
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
+
+   /* this is a required driver function */
+   assert(ctx->Driver.GetString);
+   {
+      /* Give the driver the chance to handle this query */
+      const GLubyte *str = (*ctx->Driver.GetString)(ctx, name);
+      if (str)
+         return str;
+   }
+
+   switch (name) {
+      case GL_VENDOR:
+         return (const GLubyte *) vendor;
+      case GL_RENDERER:
+         return (const GLubyte *) renderer;
+      case GL_VERSION:
+         return (const GLubyte *) compute_version(ctx);
+      case GL_EXTENSIONS:
+         if (!ctx->Extensions.String)
+            ctx->Extensions.String = _mesa_make_extension_string(ctx);
+         return (const GLubyte *) ctx->Extensions.String;
+#if FEATURE_ARB_shading_language_100
+      case GL_SHADING_LANGUAGE_VERSION_ARB:
+         if (ctx->Extensions.ARB_shading_language_120)
+            return (const GLubyte *) "1.20";
+         else if (ctx->Extensions.ARB_shading_language_100)
+            return (const GLubyte *) "1.10";
+         goto error;
+#endif
+#if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program || \
+    FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
+      case GL_PROGRAM_ERROR_STRING_NV:
+         if (ctx->Extensions.NV_fragment_program ||
+             ctx->Extensions.ARB_fragment_program ||
+             ctx->Extensions.NV_vertex_program ||
+             ctx->Extensions.ARB_vertex_program) {
+            return (const GLubyte *) ctx->Program.ErrorString;
+         }
+         /* FALL-THROUGH */
+#endif
+#if FEATURE_ARB_shading_language_100
+      error:
+#endif
+      default:
+         _mesa_error( ctx, GL_INVALID_ENUM, "glGetString" );
+         return (const GLubyte *) 0;
+   }
+}
+
+
+/**
+ * Return pointer-valued state, such as a vertex array pointer.
+ *
+ * \param pname  names state to be queried
+ * \param params  returns the pointer value
+ *
+ * \sa glGetPointerv().
+ *
+ * Tries to get the specified pointer via dd_function_table::GetPointerv,
+ * otherwise gets the specified pointer from the current context.
+ */
+void GLAPIENTRY
+_mesa_GetPointerv( GLenum pname, GLvoid **params )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   const GLuint clientUnit = ctx->Array.ActiveTexture;
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (!params)
+      return;
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glGetPointerv %s\n", _mesa_lookup_enum_by_nr(pname));
+
+   if (ctx->Driver.GetPointerv
+       && (*ctx->Driver.GetPointerv)(ctx, pname, params))
+      return;
+
+   switch (pname) {
+      case GL_VERTEX_ARRAY_POINTER:
+         *params = (GLvoid *) ctx->Array.ArrayObj->Vertex.Ptr;
+         break;
+      case GL_NORMAL_ARRAY_POINTER:
+         *params = (GLvoid *) ctx->Array.ArrayObj->Normal.Ptr;
+         break;
+      case GL_COLOR_ARRAY_POINTER:
+         *params = (GLvoid *) ctx->Array.ArrayObj->Color.Ptr;
+         break;
+      case GL_SECONDARY_COLOR_ARRAY_POINTER_EXT:
+         *params = (GLvoid *) ctx->Array.ArrayObj->SecondaryColor.Ptr;
+         break;
+      case GL_FOG_COORDINATE_ARRAY_POINTER_EXT:
+         *params = (GLvoid *) ctx->Array.ArrayObj->FogCoord.Ptr;
+         break;
+      case GL_INDEX_ARRAY_POINTER:
+         *params = (GLvoid *) ctx->Array.ArrayObj->Index.Ptr;
+         break;
+      case GL_TEXTURE_COORD_ARRAY_POINTER:
+         *params = (GLvoid *) ctx->Array.ArrayObj->TexCoord[clientUnit].Ptr;
+         break;
+      case GL_EDGE_FLAG_ARRAY_POINTER:
+         *params = (GLvoid *) ctx->Array.ArrayObj->EdgeFlag.Ptr;
+         break;
+      case GL_FEEDBACK_BUFFER_POINTER:
+         *params = ctx->Feedback.Buffer;
+         break;
+      case GL_SELECTION_BUFFER_POINTER:
+         *params = ctx->Select.Buffer;
+         break;
+      default:
+         _mesa_error( ctx, GL_INVALID_ENUM, "glGetPointerv" );
+         return;
+   }
+}
+
+
+/**
+ * Returns the current GL error code, or GL_NO_ERROR.
+ * \return current error code
+ *
+ * Returns __GLcontextRec::ErrorValue.
+ */
+GLenum GLAPIENTRY
+_mesa_GetError( void )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLenum e = ctx->ErrorValue;
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glGetError <-- %s\n", _mesa_lookup_enum_by_nr(e));
+
+   ctx->ErrorValue = (GLenum) GL_NO_ERROR;
+   ctx->ErrorDebugCount = 0;
+   return e;
+}