libX11 pixman mesa git update 12 Mar 2011

1 files changed, 415 insertions, 413 deletions

diff --git a/mesalib/src/mesa/main/shaderobj.c b/mesalib/src/mesa/main/shaderobj.c
index 1d7584559..06a2f53af 100644
--- a/mesalib/src/mesa/main/shaderobj.c
+++ b/mesalib/src/mesa/main/shaderobj.c
@@ -1,413 +1,415 @@
-/*
- * Mesa 3-D graphics library
- *
- * Copyright (C) 2004-2008  Brian Paul   All Rights Reserved.
- * Copyright (C) 2009-2010  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 shaderobj.c
- * \author Brian Paul
- *
- */
-
-
-#include "main/glheader.h"
-#include "main/context.h"
-#include "main/hash.h"
-#include "main/mfeatures.h"
-#include "main/mtypes.h"
-#include "main/shaderobj.h"
-#include "program/program.h"
-#include "program/prog_parameter.h"
-#include "program/prog_uniform.h"
-#include "ralloc.h"
-
-/**********************************************************************/
-/*** Shader object functions                                        ***/
-/**********************************************************************/
-
-
-/**
- * Set ptr to point to sh.
- * If ptr is pointing to another shader, decrement its refcount (and delete
- * if refcount hits zero).
- * Then set ptr to point to sh, incrementing its refcount.
- */
-void
-_mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
-                       struct gl_shader *sh)
-{
-   assert(ptr);
-   if (*ptr == sh) {
-      /* no-op */
-      return;
-   }
-   if (*ptr) {
-      /* Unreference the old shader */
-      GLboolean deleteFlag = GL_FALSE;
-      struct gl_shader *old = *ptr;
-
-      ASSERT(old->RefCount > 0);
-      old->RefCount--;
-      /*printf("SHADER DECR %p (%d) to %d\n",
-        (void*) old, old->Name, old->RefCount);*/
-      deleteFlag = (old->RefCount == 0);
-
-      if (deleteFlag) {
-         _mesa_HashRemove(ctx->Shared->ShaderObjects, old->Name);
-         ctx->Driver.DeleteShader(ctx, old);
-      }
-
-      *ptr = NULL;
-   }
-   assert(!*ptr);
-
-   if (sh) {
-      /* reference new */
-      sh->RefCount++;
-      /*printf("SHADER INCR %p (%d) to %d\n",
-        (void*) sh, sh->Name, sh->RefCount);*/
-      *ptr = sh;
-   }
-}
-
-void
-_mesa_init_shader(struct gl_context *ctx, struct gl_shader *shader)
-{
-   shader->RefCount = 1;
-}
-
-/**
- * Allocate a new gl_shader object, initialize it.
- * Called via ctx->Driver.NewShader()
- */
-struct gl_shader *
-_mesa_new_shader(struct gl_context *ctx, GLuint name, GLenum type)
-{
-   struct gl_shader *shader;
-   assert(type == GL_FRAGMENT_SHADER || type == GL_VERTEX_SHADER ||
-          type == GL_GEOMETRY_SHADER_ARB);
-   shader = rzalloc(NULL, struct gl_shader);
-   if (shader) {
-      shader->Type = type;
-      shader->Name = name;
-      _mesa_init_shader(ctx, shader);
-   }
-   return shader;
-}
-
-
-/**
- * Delete a shader object.
- * Called via ctx->Driver.DeleteShader().
- */
-static void
-_mesa_delete_shader(struct gl_context *ctx, struct gl_shader *sh)
-{
-   if (sh->Source)
-      free((void *) sh->Source);
-   _mesa_reference_program(ctx, &sh->Program, NULL);
-   ralloc_free(sh);
-}
-
-
-/**
- * Lookup a GLSL shader object.
- */
-struct gl_shader *
-_mesa_lookup_shader(struct gl_context *ctx, GLuint name)
-{
-   if (name) {
-      struct gl_shader *sh = (struct gl_shader *)
-         _mesa_HashLookup(ctx->Shared->ShaderObjects, name);
-      /* Note that both gl_shader and gl_shader_program objects are kept
-       * in the same hash table.  Check the object's type to be sure it's
-       * what we're expecting.
-       */
-      if (sh && sh->Type == GL_SHADER_PROGRAM_MESA) {
-         return NULL;
-      }
-      return sh;
-   }
-   return NULL;
-}
-
-
-/**
- * As above, but record an error if shader is not found.
- */
-struct gl_shader *
-_mesa_lookup_shader_err(struct gl_context *ctx, GLuint name, const char *caller)
-{
-   if (!name) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "%s", caller);
-      return NULL;
-   }
-   else {
-      struct gl_shader *sh = (struct gl_shader *)
-         _mesa_HashLookup(ctx->Shared->ShaderObjects, name);
-      if (!sh) {
-         _mesa_error(ctx, GL_INVALID_VALUE, "%s", caller);
-         return NULL;
-      }
-      if (sh->Type == GL_SHADER_PROGRAM_MESA) {
-         _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller);
-         return NULL;
-      }
-      return sh;
-   }
-}
-
-
-
-/**********************************************************************/
-/*** Shader Program object functions                                ***/
-/**********************************************************************/
-
-
-/**
- * Set ptr to point to shProg.
- * If ptr is pointing to another object, decrement its refcount (and delete
- * if refcount hits zero).
- * Then set ptr to point to shProg, incrementing its refcount.
- */
-void
-_mesa_reference_shader_program(struct gl_context *ctx,
-                               struct gl_shader_program **ptr,
-                               struct gl_shader_program *shProg)
-{
-   assert(ptr);
-   if (*ptr == shProg) {
-      /* no-op */
-      return;
-   }
-   if (*ptr) {
-      /* Unreference the old shader program */
-      GLboolean deleteFlag = GL_FALSE;
-      struct gl_shader_program *old = *ptr;
-
-      ASSERT(old->RefCount > 0);
-      old->RefCount--;
-#if 0
-      printf("ShaderProgram %p ID=%u  RefCount-- to %d\n",
-             (void *) old, old->Name, old->RefCount);
-#endif
-      deleteFlag = (old->RefCount == 0);
-
-      if (deleteFlag) {
-         _mesa_HashRemove(ctx->Shared->ShaderObjects, old->Name);
-         ctx->Driver.DeleteShaderProgram(ctx, old);
-      }
-
-      *ptr = NULL;
-   }
-   assert(!*ptr);
-
-   if (shProg) {
-      shProg->RefCount++;
-#if 0
-      printf("ShaderProgram %p ID=%u  RefCount++ to %d\n",
-             (void *) shProg, shProg->Name, shProg->RefCount);
-#endif
-      *ptr = shProg;
-   }
-}
-
-void
-_mesa_init_shader_program(struct gl_context *ctx, struct gl_shader_program *prog)
-{
-   prog->Type = GL_SHADER_PROGRAM_MESA;
-   prog->RefCount = 1;
-   prog->Attributes = _mesa_new_parameter_list();
-#if FEATURE_ARB_geometry_shader4
-   prog->Geom.VerticesOut = 0;
-   prog->Geom.InputType = GL_TRIANGLES;
-   prog->Geom.OutputType = GL_TRIANGLE_STRIP;
-#endif
-}
-
-/**
- * Allocate a new gl_shader_program object, initialize it.
- * Called via ctx->Driver.NewShaderProgram()
- */
-static struct gl_shader_program *
-_mesa_new_shader_program(struct gl_context *ctx, GLuint name)
-{
-   struct gl_shader_program *shProg;
-   shProg = rzalloc(NULL, struct gl_shader_program);
-   if (shProg) {
-      shProg->Name = name;
-      _mesa_init_shader_program(ctx, shProg);
-   }
-   return shProg;
-}
-
-
-/**
- * Clear (free) the shader program state that gets produced by linking.
- */
-void
-_mesa_clear_shader_program_data(struct gl_context *ctx,
-                                struct gl_shader_program *shProg)
-{
-   _mesa_reference_vertprog(ctx, &shProg->VertexProgram, NULL);
-   _mesa_reference_fragprog(ctx, &shProg->FragmentProgram, NULL);
-   _mesa_reference_geomprog(ctx, &shProg->GeometryProgram, NULL);
-
-   if (shProg->Uniforms) {
-      _mesa_free_uniform_list(shProg->Uniforms);
-      shProg->Uniforms = NULL;
-   }
-
-   if (shProg->Varying) {
-      _mesa_free_parameter_list(shProg->Varying);
-      shProg->Varying = NULL;
-   }
-}
-
-
-/**
- * Free all the data that hangs off a shader program object, but not the
- * object itself.
- */
-void
-_mesa_free_shader_program_data(struct gl_context *ctx,
-                               struct gl_shader_program *shProg)
-{
-   GLuint i;
-   gl_shader_type sh;
-
-   assert(shProg->Type == GL_SHADER_PROGRAM_MESA);
-
-   _mesa_clear_shader_program_data(ctx, shProg);
-
-   if (shProg->Attributes) {
-      _mesa_free_parameter_list(shProg->Attributes);
-      shProg->Attributes = NULL;
-   }
-
-   /* detach shaders */
-   for (i = 0; i < shProg->NumShaders; i++) {
-      _mesa_reference_shader(ctx, &shProg->Shaders[i], NULL);
-   }
-   shProg->NumShaders = 0;
-
-   if (shProg->Shaders) {
-      free(shProg->Shaders);
-      shProg->Shaders = NULL;
-   }
-
-   if (shProg->InfoLog) {
-      ralloc_free(shProg->InfoLog);
-      shProg->InfoLog = NULL;
-   }
-
-   /* Transform feedback varying vars */
-   for (i = 0; i < shProg->TransformFeedback.NumVarying; i++) {
-      free(shProg->TransformFeedback.VaryingNames[i]);
-   }
-   free(shProg->TransformFeedback.VaryingNames);
-   shProg->TransformFeedback.VaryingNames = NULL;
-   shProg->TransformFeedback.NumVarying = 0;
-
-
-   for (sh = 0; sh < MESA_SHADER_TYPES; sh++) {
-      if (shProg->_LinkedShaders[sh] != NULL) {
-	 ctx->Driver.DeleteShader(ctx, shProg->_LinkedShaders[sh]);
-	 shProg->_LinkedShaders[sh] = NULL;
-      }
-   }
-}
-
-
-/**
- * Free/delete a shader program object.
- * Called via ctx->Driver.DeleteShaderProgram().
- */
-static void
-_mesa_delete_shader_program(struct gl_context *ctx, struct gl_shader_program *shProg)
-{
-   _mesa_free_shader_program_data(ctx, shProg);
-
-   ralloc_free(shProg);
-}
-
-
-/**
- * Lookup a GLSL program object.
- */
-struct gl_shader_program *
-_mesa_lookup_shader_program(struct gl_context *ctx, GLuint name)
-{
-   struct gl_shader_program *shProg;
-   if (name) {
-      shProg = (struct gl_shader_program *)
-         _mesa_HashLookup(ctx->Shared->ShaderObjects, name);
-      /* Note that both gl_shader and gl_shader_program objects are kept
-       * in the same hash table.  Check the object's type to be sure it's
-       * what we're expecting.
-       */
-      if (shProg && shProg->Type != GL_SHADER_PROGRAM_MESA) {
-         return NULL;
-      }
-      return shProg;
-   }
-   return NULL;
-}
-
-
-/**
- * As above, but record an error if program is not found.
- */
-struct gl_shader_program *
-_mesa_lookup_shader_program_err(struct gl_context *ctx, GLuint name,
-                                const char *caller)
-{
-   if (!name) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "%s", caller);
-      return NULL;
-   }
-   else {
-      struct gl_shader_program *shProg = (struct gl_shader_program *)
-         _mesa_HashLookup(ctx->Shared->ShaderObjects, name);
-      if (!shProg) {
-         _mesa_error(ctx, GL_INVALID_VALUE, "%s", caller);
-         return NULL;
-      }
-      if (shProg->Type != GL_SHADER_PROGRAM_MESA) {
-         _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller);
-         return NULL;
-      }
-      return shProg;
-   }
-}
-
-
-void
-_mesa_init_shader_object_functions(struct dd_function_table *driver)
-{
-   driver->NewShader = _mesa_new_shader;
-   driver->DeleteShader = _mesa_delete_shader;
-   driver->NewShaderProgram = _mesa_new_shader_program;
-   driver->DeleteShaderProgram = _mesa_delete_shader_program;
-   driver->CompileShader = _mesa_ir_compile_shader;
-   driver->LinkShader = _mesa_ir_link_shader;
-}
+/*

+ * Mesa 3-D graphics library

+ *

+ * Copyright (C) 2004-2008  Brian Paul   All Rights Reserved.

+ * Copyright (C) 2009-2010  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 shaderobj.c

+ * \author Brian Paul

+ *

+ */

+

+

+#include "main/glheader.h"

+#include "main/context.h"

+#include "main/hash.h"

+#include "main/mfeatures.h"

+#include "main/mtypes.h"

+#include "main/shaderobj.h"

+#include "program/program.h"

+#include "program/prog_parameter.h"

+#include "program/prog_uniform.h"

+#include "ralloc.h"

+

+/**********************************************************************/

+/*** Shader object functions                                        ***/

+/**********************************************************************/

+

+

+/**

+ * Set ptr to point to sh.

+ * If ptr is pointing to another shader, decrement its refcount (and delete

+ * if refcount hits zero).

+ * Then set ptr to point to sh, incrementing its refcount.

+ */

+void

+_mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,

+                       struct gl_shader *sh)

+{

+   assert(ptr);

+   if (*ptr == sh) {

+      /* no-op */

+      return;

+   }

+   if (*ptr) {

+      /* Unreference the old shader */

+      GLboolean deleteFlag = GL_FALSE;

+      struct gl_shader *old = *ptr;

+

+      ASSERT(old->RefCount > 0);

+      old->RefCount--;

+      /*printf("SHADER DECR %p (%d) to %d\n",

+        (void*) old, old->Name, old->RefCount);*/

+      deleteFlag = (old->RefCount == 0);

+

+      if (deleteFlag) {

+	 if (old->Name != 0)

+	    _mesa_HashRemove(ctx->Shared->ShaderObjects, old->Name);

+         ctx->Driver.DeleteShader(ctx, old);

+      }

+

+      *ptr = NULL;

+   }

+   assert(!*ptr);

+

+   if (sh) {

+      /* reference new */

+      sh->RefCount++;

+      /*printf("SHADER INCR %p (%d) to %d\n",

+        (void*) sh, sh->Name, sh->RefCount);*/

+      *ptr = sh;

+   }

+}

+

+void

+_mesa_init_shader(struct gl_context *ctx, struct gl_shader *shader)

+{

+   shader->RefCount = 1;

+}

+

+/**

+ * Allocate a new gl_shader object, initialize it.

+ * Called via ctx->Driver.NewShader()

+ */

+struct gl_shader *

+_mesa_new_shader(struct gl_context *ctx, GLuint name, GLenum type)

+{

+   struct gl_shader *shader;

+   assert(type == GL_FRAGMENT_SHADER || type == GL_VERTEX_SHADER ||

+          type == GL_GEOMETRY_SHADER_ARB);

+   shader = rzalloc(NULL, struct gl_shader);

+   if (shader) {

+      shader->Type = type;

+      shader->Name = name;

+      _mesa_init_shader(ctx, shader);

+   }

+   return shader;

+}

+

+

+/**

+ * Delete a shader object.

+ * Called via ctx->Driver.DeleteShader().

+ */

+static void

+_mesa_delete_shader(struct gl_context *ctx, struct gl_shader *sh)

+{

+   if (sh->Source)

+      free((void *) sh->Source);

+   _mesa_reference_program(ctx, &sh->Program, NULL);

+   ralloc_free(sh);

+}

+

+

+/**

+ * Lookup a GLSL shader object.

+ */

+struct gl_shader *

+_mesa_lookup_shader(struct gl_context *ctx, GLuint name)

+{

+   if (name) {

+      struct gl_shader *sh = (struct gl_shader *)

+         _mesa_HashLookup(ctx->Shared->ShaderObjects, name);

+      /* Note that both gl_shader and gl_shader_program objects are kept

+       * in the same hash table.  Check the object's type to be sure it's

+       * what we're expecting.

+       */

+      if (sh && sh->Type == GL_SHADER_PROGRAM_MESA) {

+         return NULL;

+      }

+      return sh;

+   }

+   return NULL;

+}

+

+

+/**

+ * As above, but record an error if shader is not found.

+ */

+struct gl_shader *

+_mesa_lookup_shader_err(struct gl_context *ctx, GLuint name, const char *caller)

+{

+   if (!name) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "%s", caller);

+      return NULL;

+   }

+   else {

+      struct gl_shader *sh = (struct gl_shader *)

+         _mesa_HashLookup(ctx->Shared->ShaderObjects, name);

+      if (!sh) {

+         _mesa_error(ctx, GL_INVALID_VALUE, "%s", caller);

+         return NULL;

+      }

+      if (sh->Type == GL_SHADER_PROGRAM_MESA) {

+         _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller);

+         return NULL;

+      }

+      return sh;

+   }

+}

+

+

+

+/**********************************************************************/

+/*** Shader Program object functions                                ***/

+/**********************************************************************/

+

+

+/**

+ * Set ptr to point to shProg.

+ * If ptr is pointing to another object, decrement its refcount (and delete

+ * if refcount hits zero).

+ * Then set ptr to point to shProg, incrementing its refcount.

+ */

+void

+_mesa_reference_shader_program(struct gl_context *ctx,

+                               struct gl_shader_program **ptr,

+                               struct gl_shader_program *shProg)

+{

+   assert(ptr);

+   if (*ptr == shProg) {

+      /* no-op */

+      return;

+   }

+   if (*ptr) {

+      /* Unreference the old shader program */

+      GLboolean deleteFlag = GL_FALSE;

+      struct gl_shader_program *old = *ptr;

+

+      ASSERT(old->RefCount > 0);

+      old->RefCount--;

+#if 0

+      printf("ShaderProgram %p ID=%u  RefCount-- to %d\n",

+             (void *) old, old->Name, old->RefCount);

+#endif

+      deleteFlag = (old->RefCount == 0);

+

+      if (deleteFlag) {

+	 if (old->Name != 0)

+	    _mesa_HashRemove(ctx->Shared->ShaderObjects, old->Name);

+         ctx->Driver.DeleteShaderProgram(ctx, old);

+      }

+

+      *ptr = NULL;

+   }

+   assert(!*ptr);

+

+   if (shProg) {

+      shProg->RefCount++;

+#if 0

+      printf("ShaderProgram %p ID=%u  RefCount++ to %d\n",

+             (void *) shProg, shProg->Name, shProg->RefCount);

+#endif

+      *ptr = shProg;

+   }

+}

+

+void

+_mesa_init_shader_program(struct gl_context *ctx, struct gl_shader_program *prog)

+{

+   prog->Type = GL_SHADER_PROGRAM_MESA;

+   prog->RefCount = 1;

+   prog->Attributes = _mesa_new_parameter_list();

+#if FEATURE_ARB_geometry_shader4

+   prog->Geom.VerticesOut = 0;

+   prog->Geom.InputType = GL_TRIANGLES;

+   prog->Geom.OutputType = GL_TRIANGLE_STRIP;

+#endif

+}

+

+/**

+ * Allocate a new gl_shader_program object, initialize it.

+ * Called via ctx->Driver.NewShaderProgram()

+ */

+static struct gl_shader_program *

+_mesa_new_shader_program(struct gl_context *ctx, GLuint name)

+{

+   struct gl_shader_program *shProg;

+   shProg = rzalloc(NULL, struct gl_shader_program);

+   if (shProg) {

+      shProg->Name = name;

+      _mesa_init_shader_program(ctx, shProg);

+   }

+   return shProg;

+}

+

+

+/**

+ * Clear (free) the shader program state that gets produced by linking.

+ */

+void

+_mesa_clear_shader_program_data(struct gl_context *ctx,

+                                struct gl_shader_program *shProg)

+{

+   _mesa_reference_vertprog(ctx, &shProg->VertexProgram, NULL);

+   _mesa_reference_fragprog(ctx, &shProg->FragmentProgram, NULL);

+   _mesa_reference_geomprog(ctx, &shProg->GeometryProgram, NULL);

+

+   if (shProg->Uniforms) {

+      _mesa_free_uniform_list(shProg->Uniforms);

+      shProg->Uniforms = NULL;

+   }

+

+   if (shProg->Varying) {

+      _mesa_free_parameter_list(shProg->Varying);

+      shProg->Varying = NULL;

+   }

+}

+

+

+/**

+ * Free all the data that hangs off a shader program object, but not the

+ * object itself.

+ */

+void

+_mesa_free_shader_program_data(struct gl_context *ctx,

+                               struct gl_shader_program *shProg)

+{

+   GLuint i;

+   gl_shader_type sh;

+

+   assert(shProg->Type == GL_SHADER_PROGRAM_MESA);

+

+   _mesa_clear_shader_program_data(ctx, shProg);

+

+   if (shProg->Attributes) {

+      _mesa_free_parameter_list(shProg->Attributes);

+      shProg->Attributes = NULL;

+   }

+

+   /* detach shaders */

+   for (i = 0; i < shProg->NumShaders; i++) {

+      _mesa_reference_shader(ctx, &shProg->Shaders[i], NULL);

+   }

+   shProg->NumShaders = 0;

+

+   if (shProg->Shaders) {

+      free(shProg->Shaders);

+      shProg->Shaders = NULL;

+   }

+

+   if (shProg->InfoLog) {

+      ralloc_free(shProg->InfoLog);

+      shProg->InfoLog = NULL;

+   }

+

+   /* Transform feedback varying vars */

+   for (i = 0; i < shProg->TransformFeedback.NumVarying; i++) {

+      free(shProg->TransformFeedback.VaryingNames[i]);

+   }

+   free(shProg->TransformFeedback.VaryingNames);

+   shProg->TransformFeedback.VaryingNames = NULL;

+   shProg->TransformFeedback.NumVarying = 0;

+

+

+   for (sh = 0; sh < MESA_SHADER_TYPES; sh++) {

+      if (shProg->_LinkedShaders[sh] != NULL) {

+	 ctx->Driver.DeleteShader(ctx, shProg->_LinkedShaders[sh]);

+	 shProg->_LinkedShaders[sh] = NULL;

+      }

+   }

+}

+

+

+/**

+ * Free/delete a shader program object.

+ * Called via ctx->Driver.DeleteShaderProgram().

+ */

+static void

+_mesa_delete_shader_program(struct gl_context *ctx, struct gl_shader_program *shProg)

+{

+   _mesa_free_shader_program_data(ctx, shProg);

+

+   ralloc_free(shProg);

+}

+

+

+/**

+ * Lookup a GLSL program object.

+ */

+struct gl_shader_program *

+_mesa_lookup_shader_program(struct gl_context *ctx, GLuint name)

+{

+   struct gl_shader_program *shProg;

+   if (name) {

+      shProg = (struct gl_shader_program *)

+         _mesa_HashLookup(ctx->Shared->ShaderObjects, name);

+      /* Note that both gl_shader and gl_shader_program objects are kept

+       * in the same hash table.  Check the object's type to be sure it's

+       * what we're expecting.

+       */

+      if (shProg && shProg->Type != GL_SHADER_PROGRAM_MESA) {

+         return NULL;

+      }

+      return shProg;

+   }

+   return NULL;

+}

+

+

+/**

+ * As above, but record an error if program is not found.

+ */

+struct gl_shader_program *

+_mesa_lookup_shader_program_err(struct gl_context *ctx, GLuint name,

+                                const char *caller)

+{

+   if (!name) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "%s", caller);

+      return NULL;

+   }

+   else {

+      struct gl_shader_program *shProg = (struct gl_shader_program *)

+         _mesa_HashLookup(ctx->Shared->ShaderObjects, name);

+      if (!shProg) {

+         _mesa_error(ctx, GL_INVALID_VALUE, "%s", caller);

+         return NULL;

+      }

+      if (shProg->Type != GL_SHADER_PROGRAM_MESA) {

+         _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller);

+         return NULL;

+      }

+      return shProg;

+   }

+}

+

+

+void

+_mesa_init_shader_object_functions(struct dd_function_table *driver)

+{

+   driver->NewShader = _mesa_new_shader;

+   driver->DeleteShader = _mesa_delete_shader;

+   driver->NewShaderProgram = _mesa_new_shader_program;

+   driver->DeleteShaderProgram = _mesa_delete_shader_program;

+   driver->CompileShader = _mesa_ir_compile_shader;

+   driver->LinkShader = _mesa_ir_link_shader;

+}