libX11 libXinerama mesa git update 1 Feb 2011

1 files changed, 413 insertions, 413 deletions

diff --git a/mesalib/src/mesa/main/shaderobj.c b/mesalib/src/mesa/main/shaderobj.c
index efee05ac6..1d7584559 100644
--- a/mesalib/src/mesa/main/shaderobj.c
+++ b/mesalib/src/mesa/main/shaderobj.c
@@ -1,413 +1,413 @@
-/*

- * 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 "talloc.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 = talloc_zero(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);

-   talloc_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 = talloc_zero(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) {

-      talloc_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);

-

-   talloc_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) {
+         _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;
+}