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-rw-r--r--mesalib/src/mesa/main/shared.c780
1 files changed, 390 insertions, 390 deletions
diff --git a/mesalib/src/mesa/main/shared.c b/mesalib/src/mesa/main/shared.c
index a56c70fa7..bfbddaaa0 100644
--- a/mesalib/src/mesa/main/shared.c
+++ b/mesalib/src/mesa/main/shared.c
@@ -1,390 +1,390 @@
-/*
- * Mesa 3-D graphics library
- * Version: 7.5
- *
- * 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 shared.c
- * Shared-context state
- */
-
-
-
-#include "imports.h"
-#include "mtypes.h"
-#include "hash.h"
-#if FEATURE_ATI_fragment_shader
-#include "atifragshader.h"
-#endif
-#include "bufferobj.h"
-#include "shared.h"
-#include "program/program.h"
-#include "dlist.h"
-#include "shaderobj.h"
-#include "syncobj.h"
-
-/**
- * Allocate and initialize a shared context state structure.
- * Initializes the display list, texture objects and vertex programs hash
- * tables, allocates the texture objects. If it runs out of memory, frees
- * everything already allocated before returning NULL.
- *
- * \return pointer to a gl_shared_state structure on success, or NULL on
- * failure.
- */
-struct gl_shared_state *
-_mesa_alloc_shared_state(GLcontext *ctx)
-{
- struct gl_shared_state *shared;
- GLuint i;
-
- shared = CALLOC_STRUCT(gl_shared_state);
- if (!shared)
- return NULL;
-
- _glthread_INIT_MUTEX(shared->Mutex);
-
- shared->DisplayList = _mesa_NewHashTable();
- shared->TexObjects = _mesa_NewHashTable();
- shared->Programs = _mesa_NewHashTable();
-
-#if FEATURE_ARB_vertex_program
- shared->DefaultVertexProgram = (struct gl_vertex_program *)
- ctx->Driver.NewProgram(ctx, GL_VERTEX_PROGRAM_ARB, 0);
-#endif
-
-#if FEATURE_ARB_fragment_program
- shared->DefaultFragmentProgram = (struct gl_fragment_program *)
- ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
-#endif
-
-#if FEATURE_ATI_fragment_shader
- shared->ATIShaders = _mesa_NewHashTable();
- shared->DefaultFragmentShader = _mesa_new_ati_fragment_shader(ctx, 0);
-#endif
-
-#if FEATURE_ARB_shader_objects
- shared->ShaderObjects = _mesa_NewHashTable();
-#endif
-
-#if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
- shared->BufferObjects = _mesa_NewHashTable();
-#endif
-
- /* Allocate the default buffer object */
- shared->NullBufferObj = ctx->Driver.NewBufferObject(ctx, 0, 0);
-
- /* Create default texture objects */
- for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
- /* NOTE: the order of these enums matches the TEXTURE_x_INDEX values */
- static const GLenum targets[NUM_TEXTURE_TARGETS] = {
- GL_TEXTURE_2D_ARRAY_EXT,
- GL_TEXTURE_1D_ARRAY_EXT,
- GL_TEXTURE_CUBE_MAP,
- GL_TEXTURE_3D,
- GL_TEXTURE_RECTANGLE_NV,
- GL_TEXTURE_2D,
- GL_TEXTURE_1D
- };
- shared->DefaultTex[i] = ctx->Driver.NewTextureObject(ctx, 0, targets[i]);
- }
-
- /* sanity check */
- assert(shared->DefaultTex[TEXTURE_1D_INDEX]->RefCount == 1);
-
- /* Mutex and timestamp for texobj state validation */
- _glthread_INIT_MUTEX(shared->TexMutex);
- shared->TextureStateStamp = 0;
-
-#if FEATURE_EXT_framebuffer_object
- shared->FrameBuffers = _mesa_NewHashTable();
- shared->RenderBuffers = _mesa_NewHashTable();
-#endif
-
- make_empty_list(& shared->SyncObjects);
-
- return shared;
-}
-
-
-/**
- * Callback for deleting a display list. Called by _mesa_HashDeleteAll().
- */
-static void
-delete_displaylist_cb(GLuint id, void *data, void *userData)
-{
- struct gl_display_list *list = (struct gl_display_list *) data;
- GLcontext *ctx = (GLcontext *) userData;
- _mesa_delete_list(ctx, list);
-}
-
-
-/**
- * Callback for deleting a texture object. Called by _mesa_HashDeleteAll().
- */
-static void
-delete_texture_cb(GLuint id, void *data, void *userData)
-{
- struct gl_texture_object *texObj = (struct gl_texture_object *) data;
- GLcontext *ctx = (GLcontext *) userData;
- ctx->Driver.DeleteTexture(ctx, texObj);
-}
-
-
-/**
- * Callback for deleting a program object. Called by _mesa_HashDeleteAll().
- */
-static void
-delete_program_cb(GLuint id, void *data, void *userData)
-{
- struct gl_program *prog = (struct gl_program *) data;
- GLcontext *ctx = (GLcontext *) userData;
- if(prog != &_mesa_DummyProgram) {
- ASSERT(prog->RefCount == 1); /* should only be referenced by hash table */
- prog->RefCount = 0; /* now going away */
- ctx->Driver.DeleteProgram(ctx, prog);
- }
-}
-
-
-#if FEATURE_ATI_fragment_shader
-/**
- * Callback for deleting an ATI fragment shader object.
- * Called by _mesa_HashDeleteAll().
- */
-static void
-delete_fragshader_cb(GLuint id, void *data, void *userData)
-{
- struct ati_fragment_shader *shader = (struct ati_fragment_shader *) data;
- GLcontext *ctx = (GLcontext *) userData;
- _mesa_delete_ati_fragment_shader(ctx, shader);
-}
-#endif
-
-
-/**
- * Callback for deleting a buffer object. Called by _mesa_HashDeleteAll().
- */
-static void
-delete_bufferobj_cb(GLuint id, void *data, void *userData)
-{
- struct gl_buffer_object *bufObj = (struct gl_buffer_object *) data;
- GLcontext *ctx = (GLcontext *) userData;
- if (_mesa_bufferobj_mapped(bufObj)) {
- ctx->Driver.UnmapBuffer(ctx, 0, bufObj);
- bufObj->Pointer = NULL;
- }
- _mesa_reference_buffer_object(ctx, &bufObj, NULL);
-}
-
-
-/**
- * Callback for freeing shader program data. Call it before delete_shader_cb
- * to avoid memory access error.
- */
-static void
-free_shader_program_data_cb(GLuint id, void *data, void *userData)
-{
- GLcontext *ctx = (GLcontext *) userData;
- struct gl_shader_program *shProg = (struct gl_shader_program *) data;
-
- if (shProg->Type == GL_SHADER_PROGRAM_MESA) {
- _mesa_free_shader_program_data(ctx, shProg);
- }
-}
-
-
-/**
- * Callback for deleting shader and shader programs objects.
- * Called by _mesa_HashDeleteAll().
- */
-static void
-delete_shader_cb(GLuint id, void *data, void *userData)
-{
- GLcontext *ctx = (GLcontext *) userData;
- struct gl_shader *sh = (struct gl_shader *) data;
- if (sh->Type == GL_FRAGMENT_SHADER || sh->Type == GL_VERTEX_SHADER) {
- ctx->Driver.DeleteShader(ctx, sh);
- }
- else {
- struct gl_shader_program *shProg = (struct gl_shader_program *) data;
- ASSERT(shProg->Type == GL_SHADER_PROGRAM_MESA);
- ctx->Driver.DeleteShaderProgram(ctx, shProg);
- }
-}
-
-
-/**
- * Callback for deleting a framebuffer object. Called by _mesa_HashDeleteAll()
- */
-static void
-delete_framebuffer_cb(GLuint id, void *data, void *userData)
-{
- struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
- /* The fact that the framebuffer is in the hashtable means its refcount
- * is one, but we're removing from the hashtable now. So clear refcount.
- */
- /*assert(fb->RefCount == 1);*/
- fb->RefCount = 0;
-
- /* NOTE: Delete should always be defined but there are two reports
- * of it being NULL (bugs 13507, 14293). Work-around for now.
- */
- if (fb->Delete)
- fb->Delete(fb);
-}
-
-
-/**
- * Callback for deleting a renderbuffer object. Called by _mesa_HashDeleteAll()
- */
-static void
-delete_renderbuffer_cb(GLuint id, void *data, void *userData)
-{
- struct gl_renderbuffer *rb = (struct gl_renderbuffer *) data;
- rb->RefCount = 0; /* see comment for FBOs above */
- if (rb->Delete)
- rb->Delete(rb);
-}
-
-
-/**
- * Deallocate a shared state object and all children structures.
- *
- * \param ctx GL context.
- * \param shared shared state pointer.
- *
- * Frees the display lists, the texture objects (calling the driver texture
- * deletion callback to free its private data) and the vertex programs, as well
- * as their hash tables.
- *
- * \sa alloc_shared_state().
- */
-static void
-free_shared_state(GLcontext *ctx, struct gl_shared_state *shared)
-{
- GLuint i;
-
- /* Free the dummy/fallback texture object */
- if (shared->FallbackTex)
- ctx->Driver.DeleteTexture(ctx, shared->FallbackTex);
-
- /*
- * Free display lists
- */
- _mesa_HashDeleteAll(shared->DisplayList, delete_displaylist_cb, ctx);
- _mesa_DeleteHashTable(shared->DisplayList);
-
-#if FEATURE_ARB_shader_objects
- _mesa_HashWalk(shared->ShaderObjects, free_shader_program_data_cb, ctx);
- _mesa_HashDeleteAll(shared->ShaderObjects, delete_shader_cb, ctx);
- _mesa_DeleteHashTable(shared->ShaderObjects);
-#endif
-
- _mesa_HashDeleteAll(shared->Programs, delete_program_cb, ctx);
- _mesa_DeleteHashTable(shared->Programs);
-
-#if FEATURE_ARB_vertex_program
- _mesa_reference_vertprog(ctx, &shared->DefaultVertexProgram, NULL);
-#endif
-
-#if FEATURE_ARB_fragment_program
- _mesa_reference_fragprog(ctx, &shared->DefaultFragmentProgram, NULL);
-#endif
-
-#if FEATURE_ATI_fragment_shader
- _mesa_HashDeleteAll(shared->ATIShaders, delete_fragshader_cb, ctx);
- _mesa_DeleteHashTable(shared->ATIShaders);
- _mesa_delete_ati_fragment_shader(ctx, shared->DefaultFragmentShader);
-#endif
-
-#if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
- _mesa_HashDeleteAll(shared->BufferObjects, delete_bufferobj_cb, ctx);
- _mesa_DeleteHashTable(shared->BufferObjects);
-#endif
-
-#if FEATURE_EXT_framebuffer_object
- _mesa_HashDeleteAll(shared->FrameBuffers, delete_framebuffer_cb, ctx);
- _mesa_DeleteHashTable(shared->FrameBuffers);
- _mesa_HashDeleteAll(shared->RenderBuffers, delete_renderbuffer_cb, ctx);
- _mesa_DeleteHashTable(shared->RenderBuffers);
-#endif
-
-#if FEATURE_ARB_vertex_buffer_object
- _mesa_reference_buffer_object(ctx, &shared->NullBufferObj, NULL);
-#endif
-
- {
- struct simple_node *node;
- struct simple_node *temp;
-
- foreach_s(node, temp, & shared->SyncObjects) {
- _mesa_unref_sync_object(ctx, (struct gl_sync_object *) node);
- }
- }
-
- /*
- * Free texture objects (after FBOs since some textures might have
- * been bound to FBOs).
- */
- ASSERT(ctx->Driver.DeleteTexture);
- /* the default textures */
- for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
- ctx->Driver.DeleteTexture(ctx, shared->DefaultTex[i]);
- }
-
- /* all other textures */
- _mesa_HashDeleteAll(shared->TexObjects, delete_texture_cb, ctx);
- _mesa_DeleteHashTable(shared->TexObjects);
-
- _glthread_DESTROY_MUTEX(shared->Mutex);
- _glthread_DESTROY_MUTEX(shared->TexMutex);
-
- free(shared);
-}
-
-
-/**
- * Decrement shared state object reference count and potentially free it
- * and all children structures.
- *
- * \param ctx GL context.
- * \param shared shared state pointer.
- *
- * \sa free_shared_state().
- */
-void
-_mesa_release_shared_state(GLcontext *ctx, struct gl_shared_state *shared)
-{
- GLint RefCount;
-
- _glthread_LOCK_MUTEX(shared->Mutex);
- RefCount = --shared->RefCount;
- _glthread_UNLOCK_MUTEX(shared->Mutex);
-
- assert(RefCount >= 0);
-
- if (RefCount == 0) {
- /* free shared state */
- free_shared_state( ctx, shared );
- }
-}
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.5
+ *
+ * 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 shared.c
+ * Shared-context state
+ */
+
+
+
+#include "imports.h"
+#include "mtypes.h"
+#include "hash.h"
+#if FEATURE_ATI_fragment_shader
+#include "atifragshader.h"
+#endif
+#include "bufferobj.h"
+#include "shared.h"
+#include "program/program.h"
+#include "dlist.h"
+#include "shaderobj.h"
+#include "syncobj.h"
+
+/**
+ * Allocate and initialize a shared context state structure.
+ * Initializes the display list, texture objects and vertex programs hash
+ * tables, allocates the texture objects. If it runs out of memory, frees
+ * everything already allocated before returning NULL.
+ *
+ * \return pointer to a gl_shared_state structure on success, or NULL on
+ * failure.
+ */
+struct gl_shared_state *
+_mesa_alloc_shared_state(struct gl_context *ctx)
+{
+ struct gl_shared_state *shared;
+ GLuint i;
+
+ shared = CALLOC_STRUCT(gl_shared_state);
+ if (!shared)
+ return NULL;
+
+ _glthread_INIT_MUTEX(shared->Mutex);
+
+ shared->DisplayList = _mesa_NewHashTable();
+ shared->TexObjects = _mesa_NewHashTable();
+ shared->Programs = _mesa_NewHashTable();
+
+#if FEATURE_ARB_vertex_program
+ shared->DefaultVertexProgram = (struct gl_vertex_program *)
+ ctx->Driver.NewProgram(ctx, GL_VERTEX_PROGRAM_ARB, 0);
+#endif
+
+#if FEATURE_ARB_fragment_program
+ shared->DefaultFragmentProgram = (struct gl_fragment_program *)
+ ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
+#endif
+
+#if FEATURE_ATI_fragment_shader
+ shared->ATIShaders = _mesa_NewHashTable();
+ shared->DefaultFragmentShader = _mesa_new_ati_fragment_shader(ctx, 0);
+#endif
+
+#if FEATURE_ARB_shader_objects
+ shared->ShaderObjects = _mesa_NewHashTable();
+#endif
+
+#if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
+ shared->BufferObjects = _mesa_NewHashTable();
+#endif
+
+ /* Allocate the default buffer object */
+ shared->NullBufferObj = ctx->Driver.NewBufferObject(ctx, 0, 0);
+
+ /* Create default texture objects */
+ for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
+ /* NOTE: the order of these enums matches the TEXTURE_x_INDEX values */
+ static const GLenum targets[NUM_TEXTURE_TARGETS] = {
+ GL_TEXTURE_2D_ARRAY_EXT,
+ GL_TEXTURE_1D_ARRAY_EXT,
+ GL_TEXTURE_CUBE_MAP,
+ GL_TEXTURE_3D,
+ GL_TEXTURE_RECTANGLE_NV,
+ GL_TEXTURE_2D,
+ GL_TEXTURE_1D
+ };
+ shared->DefaultTex[i] = ctx->Driver.NewTextureObject(ctx, 0, targets[i]);
+ }
+
+ /* sanity check */
+ assert(shared->DefaultTex[TEXTURE_1D_INDEX]->RefCount == 1);
+
+ /* Mutex and timestamp for texobj state validation */
+ _glthread_INIT_MUTEX(shared->TexMutex);
+ shared->TextureStateStamp = 0;
+
+#if FEATURE_EXT_framebuffer_object
+ shared->FrameBuffers = _mesa_NewHashTable();
+ shared->RenderBuffers = _mesa_NewHashTable();
+#endif
+
+ make_empty_list(& shared->SyncObjects);
+
+ return shared;
+}
+
+
+/**
+ * Callback for deleting a display list. Called by _mesa_HashDeleteAll().
+ */
+static void
+delete_displaylist_cb(GLuint id, void *data, void *userData)
+{
+ struct gl_display_list *list = (struct gl_display_list *) data;
+ struct gl_context *ctx = (struct gl_context *) userData;
+ _mesa_delete_list(ctx, list);
+}
+
+
+/**
+ * Callback for deleting a texture object. Called by _mesa_HashDeleteAll().
+ */
+static void
+delete_texture_cb(GLuint id, void *data, void *userData)
+{
+ struct gl_texture_object *texObj = (struct gl_texture_object *) data;
+ struct gl_context *ctx = (struct gl_context *) userData;
+ ctx->Driver.DeleteTexture(ctx, texObj);
+}
+
+
+/**
+ * Callback for deleting a program object. Called by _mesa_HashDeleteAll().
+ */
+static void
+delete_program_cb(GLuint id, void *data, void *userData)
+{
+ struct gl_program *prog = (struct gl_program *) data;
+ struct gl_context *ctx = (struct gl_context *) userData;
+ if(prog != &_mesa_DummyProgram) {
+ ASSERT(prog->RefCount == 1); /* should only be referenced by hash table */
+ prog->RefCount = 0; /* now going away */
+ ctx->Driver.DeleteProgram(ctx, prog);
+ }
+}
+
+
+#if FEATURE_ATI_fragment_shader
+/**
+ * Callback for deleting an ATI fragment shader object.
+ * Called by _mesa_HashDeleteAll().
+ */
+static void
+delete_fragshader_cb(GLuint id, void *data, void *userData)
+{
+ struct ati_fragment_shader *shader = (struct ati_fragment_shader *) data;
+ struct gl_context *ctx = (struct gl_context *) userData;
+ _mesa_delete_ati_fragment_shader(ctx, shader);
+}
+#endif
+
+
+/**
+ * Callback for deleting a buffer object. Called by _mesa_HashDeleteAll().
+ */
+static void
+delete_bufferobj_cb(GLuint id, void *data, void *userData)
+{
+ struct gl_buffer_object *bufObj = (struct gl_buffer_object *) data;
+ struct gl_context *ctx = (struct gl_context *) userData;
+ if (_mesa_bufferobj_mapped(bufObj)) {
+ ctx->Driver.UnmapBuffer(ctx, 0, bufObj);
+ bufObj->Pointer = NULL;
+ }
+ _mesa_reference_buffer_object(ctx, &bufObj, NULL);
+}
+
+
+/**
+ * Callback for freeing shader program data. Call it before delete_shader_cb
+ * to avoid memory access error.
+ */
+static void
+free_shader_program_data_cb(GLuint id, void *data, void *userData)
+{
+ struct gl_context *ctx = (struct gl_context *) userData;
+ struct gl_shader_program *shProg = (struct gl_shader_program *) data;
+
+ if (shProg->Type == GL_SHADER_PROGRAM_MESA) {
+ _mesa_free_shader_program_data(ctx, shProg);
+ }
+}
+
+
+/**
+ * Callback for deleting shader and shader programs objects.
+ * Called by _mesa_HashDeleteAll().
+ */
+static void
+delete_shader_cb(GLuint id, void *data, void *userData)
+{
+ struct gl_context *ctx = (struct gl_context *) userData;
+ struct gl_shader *sh = (struct gl_shader *) data;
+ if (sh->Type == GL_FRAGMENT_SHADER || sh->Type == GL_VERTEX_SHADER) {
+ ctx->Driver.DeleteShader(ctx, sh);
+ }
+ else {
+ struct gl_shader_program *shProg = (struct gl_shader_program *) data;
+ ASSERT(shProg->Type == GL_SHADER_PROGRAM_MESA);
+ ctx->Driver.DeleteShaderProgram(ctx, shProg);
+ }
+}
+
+
+/**
+ * Callback for deleting a framebuffer object. Called by _mesa_HashDeleteAll()
+ */
+static void
+delete_framebuffer_cb(GLuint id, void *data, void *userData)
+{
+ struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
+ /* The fact that the framebuffer is in the hashtable means its refcount
+ * is one, but we're removing from the hashtable now. So clear refcount.
+ */
+ /*assert(fb->RefCount == 1);*/
+ fb->RefCount = 0;
+
+ /* NOTE: Delete should always be defined but there are two reports
+ * of it being NULL (bugs 13507, 14293). Work-around for now.
+ */
+ if (fb->Delete)
+ fb->Delete(fb);
+}
+
+
+/**
+ * Callback for deleting a renderbuffer object. Called by _mesa_HashDeleteAll()
+ */
+static void
+delete_renderbuffer_cb(GLuint id, void *data, void *userData)
+{
+ struct gl_renderbuffer *rb = (struct gl_renderbuffer *) data;
+ rb->RefCount = 0; /* see comment for FBOs above */
+ if (rb->Delete)
+ rb->Delete(rb);
+}
+
+
+/**
+ * Deallocate a shared state object and all children structures.
+ *
+ * \param ctx GL context.
+ * \param shared shared state pointer.
+ *
+ * Frees the display lists, the texture objects (calling the driver texture
+ * deletion callback to free its private data) and the vertex programs, as well
+ * as their hash tables.
+ *
+ * \sa alloc_shared_state().
+ */
+static void
+free_shared_state(struct gl_context *ctx, struct gl_shared_state *shared)
+{
+ GLuint i;
+
+ /* Free the dummy/fallback texture object */
+ if (shared->FallbackTex)
+ ctx->Driver.DeleteTexture(ctx, shared->FallbackTex);
+
+ /*
+ * Free display lists
+ */
+ _mesa_HashDeleteAll(shared->DisplayList, delete_displaylist_cb, ctx);
+ _mesa_DeleteHashTable(shared->DisplayList);
+
+#if FEATURE_ARB_shader_objects
+ _mesa_HashWalk(shared->ShaderObjects, free_shader_program_data_cb, ctx);
+ _mesa_HashDeleteAll(shared->ShaderObjects, delete_shader_cb, ctx);
+ _mesa_DeleteHashTable(shared->ShaderObjects);
+#endif
+
+ _mesa_HashDeleteAll(shared->Programs, delete_program_cb, ctx);
+ _mesa_DeleteHashTable(shared->Programs);
+
+#if FEATURE_ARB_vertex_program
+ _mesa_reference_vertprog(ctx, &shared->DefaultVertexProgram, NULL);
+#endif
+
+#if FEATURE_ARB_fragment_program
+ _mesa_reference_fragprog(ctx, &shared->DefaultFragmentProgram, NULL);
+#endif
+
+#if FEATURE_ATI_fragment_shader
+ _mesa_HashDeleteAll(shared->ATIShaders, delete_fragshader_cb, ctx);
+ _mesa_DeleteHashTable(shared->ATIShaders);
+ _mesa_delete_ati_fragment_shader(ctx, shared->DefaultFragmentShader);
+#endif
+
+#if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
+ _mesa_HashDeleteAll(shared->BufferObjects, delete_bufferobj_cb, ctx);
+ _mesa_DeleteHashTable(shared->BufferObjects);
+#endif
+
+#if FEATURE_EXT_framebuffer_object
+ _mesa_HashDeleteAll(shared->FrameBuffers, delete_framebuffer_cb, ctx);
+ _mesa_DeleteHashTable(shared->FrameBuffers);
+ _mesa_HashDeleteAll(shared->RenderBuffers, delete_renderbuffer_cb, ctx);
+ _mesa_DeleteHashTable(shared->RenderBuffers);
+#endif
+
+#if FEATURE_ARB_vertex_buffer_object
+ _mesa_reference_buffer_object(ctx, &shared->NullBufferObj, NULL);
+#endif
+
+ {
+ struct simple_node *node;
+ struct simple_node *temp;
+
+ foreach_s(node, temp, & shared->SyncObjects) {
+ _mesa_unref_sync_object(ctx, (struct gl_sync_object *) node);
+ }
+ }
+
+ /*
+ * Free texture objects (after FBOs since some textures might have
+ * been bound to FBOs).
+ */
+ ASSERT(ctx->Driver.DeleteTexture);
+ /* the default textures */
+ for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
+ ctx->Driver.DeleteTexture(ctx, shared->DefaultTex[i]);
+ }
+
+ /* all other textures */
+ _mesa_HashDeleteAll(shared->TexObjects, delete_texture_cb, ctx);
+ _mesa_DeleteHashTable(shared->TexObjects);
+
+ _glthread_DESTROY_MUTEX(shared->Mutex);
+ _glthread_DESTROY_MUTEX(shared->TexMutex);
+
+ free(shared);
+}
+
+
+/**
+ * Decrement shared state object reference count and potentially free it
+ * and all children structures.
+ *
+ * \param ctx GL context.
+ * \param shared shared state pointer.
+ *
+ * \sa free_shared_state().
+ */
+void
+_mesa_release_shared_state(struct gl_context *ctx, struct gl_shared_state *shared)
+{
+ GLint RefCount;
+
+ _glthread_LOCK_MUTEX(shared->Mutex);
+ RefCount = --shared->RefCount;
+ _glthread_UNLOCK_MUTEX(shared->Mutex);
+
+ assert(RefCount >= 0);
+
+ if (RefCount == 0) {
+ /* free shared state */
+ free_shared_state( ctx, shared );
+ }
+}