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diff --git a/mesalib/src/mesa/main/shared.c b/mesalib/src/mesa/main/shared.c
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+/*
+ * 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"
+#include "arrayobj.h"
+#include "bufferobj.h"
+#include "shared.h"
+#include "shader/program.h"
+#include "shader/shader_api.h"
+#if FEATURE_dlist
+#include "dlist.h"
+#endif
+#if FEATURE_ATI_fragment_shader
+#include "shader/atifragshader.h"
+#endif
+#if FEATURE_ARB_sync
+#include "syncobj.h"
+#endif
+
+/**
+ * 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 and set refcount so high that
+ * it never gets deleted.
+ * XXX with recent/improved refcounting this may not longer be needed.
+ */
+ shared->NullBufferObj = ctx->Driver.NewBufferObject(ctx, 0, 0);
+ shared->NullBufferObj->RefCount = 1000 * 1000 * 1000;
+
+ /* 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
+
+#if FEATURE_ARB_sync
+ make_empty_list(& shared->SyncObjects);
+#endif
+
+ return shared;
+}
+
+
+/**
+ * Callback for deleting a display list. Called by _mesa_HashDeleteAll().
+ */
+static void
+delete_displaylist_cb(GLuint id, void *data, void *userData)
+{
+#if FEATURE_dlist
+ struct gl_display_list *list = (struct gl_display_list *) data;
+ GLcontext *ctx = (GLcontext *) userData;
+ _mesa_delete_list(ctx, list);
+#endif
+}
+
+
+/**
+ * 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;
+ }
+ ctx->Driver.DeleteBuffer(ctx, bufObj);
+}
+
+
+/**
+ * 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) {
+ _mesa_free_shader(ctx, sh);
+ }
+ else {
+ struct gl_shader_program *shProg = (struct gl_shader_program *) data;
+ ASSERT(shProg->Type == GL_SHADER_PROGRAM_MESA);
+ _mesa_free_shader_program(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().
+ */
+void
+_mesa_free_shared_state(GLcontext *ctx, struct gl_shared_state *shared)
+{
+ GLuint i;
+
+ /*
+ * 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
+ ctx->Driver.DeleteBuffer(ctx, shared->NullBufferObj);
+#endif
+
+#if FEATURE_ARB_sync
+ {
+ struct simple_node *node;
+ struct simple_node *temp;
+
+ foreach_s(node, temp, & shared->SyncObjects) {
+ _mesa_unref_sync_object(ctx, (struct gl_sync_object *) node);
+ }
+ }
+#endif
+
+ /*
+ * 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);
+
+ _mesa_free(shared);
+}