2 * Mesa 3-D graphics library
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
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28 * Shared-context state
34 #include "hash_table.h"
35 #include "atifragshader.h"
36 #include "bufferobj.h"
38 #include "program/program.h"
40 #include "samplerobj.h"
42 #include "shaderobj.h"
47 * Allocate and initialize a shared context state structure.
48 * Initializes the display list, texture objects and vertex programs hash
49 * tables, allocates the texture objects. If it runs out of memory, frees
50 * everything already allocated before returning NULL.
52 * \return pointer to a gl_shared_state structure on success, or NULL on
55 struct gl_shared_state *
56 _mesa_alloc_shared_state(struct gl_context *ctx)
58 struct gl_shared_state *shared;
61 shared = CALLOC_STRUCT(gl_shared_state);
65 _glthread_INIT_MUTEX(shared->Mutex);
67 shared->DisplayList = _mesa_NewHashTable();
68 shared->TexObjects = _mesa_NewHashTable();
69 shared->Programs = _mesa_NewHashTable();
71 shared->DefaultVertexProgram =
72 gl_vertex_program(ctx->Driver.NewProgram(ctx,
73 GL_VERTEX_PROGRAM_ARB, 0));
74 shared->DefaultFragmentProgram =
75 gl_fragment_program(ctx->Driver.NewProgram(ctx,
76 GL_FRAGMENT_PROGRAM_ARB, 0));
78 shared->ATIShaders = _mesa_NewHashTable();
79 shared->DefaultFragmentShader = _mesa_new_ati_fragment_shader(ctx, 0);
81 shared->ShaderObjects = _mesa_NewHashTable();
83 shared->BufferObjects = _mesa_NewHashTable();
85 /* GL_ARB_sampler_objects */
86 shared->SamplerObjects = _mesa_NewHashTable();
88 /* Allocate the default buffer object */
89 shared->NullBufferObj = ctx->Driver.NewBufferObject(ctx, 0, 0);
91 /* Create default texture objects */
92 for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
93 /* NOTE: the order of these enums matches the TEXTURE_x_INDEX values */
94 static const GLenum targets[] = {
95 GL_TEXTURE_2D_MULTISAMPLE,
96 GL_TEXTURE_2D_MULTISAMPLE_ARRAY,
97 GL_TEXTURE_CUBE_MAP_ARRAY,
99 GL_TEXTURE_2D_ARRAY_EXT,
100 GL_TEXTURE_1D_ARRAY_EXT,
101 GL_TEXTURE_EXTERNAL_OES,
104 GL_TEXTURE_RECTANGLE_NV,
108 STATIC_ASSERT(Elements(targets) == NUM_TEXTURE_TARGETS);
109 shared->DefaultTex[i] = ctx->Driver.NewTextureObject(ctx, 0, targets[i]);
113 assert(shared->DefaultTex[TEXTURE_1D_INDEX]->RefCount == 1);
115 /* Mutex and timestamp for texobj state validation */
116 _glthread_INIT_MUTEX(shared->TexMutex);
117 shared->TextureStateStamp = 0;
119 shared->FrameBuffers = _mesa_NewHashTable();
120 shared->RenderBuffers = _mesa_NewHashTable();
122 shared->SyncObjects = _mesa_set_create(NULL, _mesa_key_pointer_equal);
129 * Callback for deleting a display list. Called by _mesa_HashDeleteAll().
132 delete_displaylist_cb(GLuint id, void *data, void *userData)
134 struct gl_display_list *list = (struct gl_display_list *) data;
135 struct gl_context *ctx = (struct gl_context *) userData;
136 _mesa_delete_list(ctx, list);
141 * Callback for deleting a texture object. Called by _mesa_HashDeleteAll().
144 delete_texture_cb(GLuint id, void *data, void *userData)
146 struct gl_texture_object *texObj = (struct gl_texture_object *) data;
147 struct gl_context *ctx = (struct gl_context *) userData;
148 ctx->Driver.DeleteTexture(ctx, texObj);
153 * Callback for deleting a program object. Called by _mesa_HashDeleteAll().
156 delete_program_cb(GLuint id, void *data, void *userData)
158 struct gl_program *prog = (struct gl_program *) data;
159 struct gl_context *ctx = (struct gl_context *) userData;
160 if(prog != &_mesa_DummyProgram) {
161 ASSERT(prog->RefCount == 1); /* should only be referenced by hash table */
162 prog->RefCount = 0; /* now going away */
163 ctx->Driver.DeleteProgram(ctx, prog);
169 * Callback for deleting an ATI fragment shader object.
170 * Called by _mesa_HashDeleteAll().
173 delete_fragshader_cb(GLuint id, void *data, void *userData)
175 struct ati_fragment_shader *shader = (struct ati_fragment_shader *) data;
176 struct gl_context *ctx = (struct gl_context *) userData;
177 _mesa_delete_ati_fragment_shader(ctx, shader);
182 * Callback for deleting a buffer object. Called by _mesa_HashDeleteAll().
185 delete_bufferobj_cb(GLuint id, void *data, void *userData)
187 struct gl_buffer_object *bufObj = (struct gl_buffer_object *) data;
188 struct gl_context *ctx = (struct gl_context *) userData;
189 if (_mesa_bufferobj_mapped(bufObj)) {
190 ctx->Driver.UnmapBuffer(ctx, bufObj);
191 bufObj->Pointer = NULL;
193 _mesa_reference_buffer_object(ctx, &bufObj, NULL);
198 * Callback for freeing shader program data. Call it before delete_shader_cb
199 * to avoid memory access error.
202 free_shader_program_data_cb(GLuint id, void *data, void *userData)
204 struct gl_context *ctx = (struct gl_context *) userData;
205 struct gl_shader_program *shProg = (struct gl_shader_program *) data;
207 if (shProg->Type == GL_SHADER_PROGRAM_MESA) {
208 _mesa_free_shader_program_data(ctx, shProg);
214 * Callback for deleting shader and shader programs objects.
215 * Called by _mesa_HashDeleteAll().
218 delete_shader_cb(GLuint id, void *data, void *userData)
220 struct gl_context *ctx = (struct gl_context *) userData;
221 struct gl_shader *sh = (struct gl_shader *) data;
222 if (sh->Type == GL_FRAGMENT_SHADER || sh->Type == GL_VERTEX_SHADER) {
223 ctx->Driver.DeleteShader(ctx, sh);
226 struct gl_shader_program *shProg = (struct gl_shader_program *) data;
227 ASSERT(shProg->Type == GL_SHADER_PROGRAM_MESA);
228 ctx->Driver.DeleteShaderProgram(ctx, shProg);
234 * Callback for deleting a framebuffer object. Called by _mesa_HashDeleteAll()
237 delete_framebuffer_cb(GLuint id, void *data, void *userData)
239 struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
240 /* The fact that the framebuffer is in the hashtable means its refcount
241 * is one, but we're removing from the hashtable now. So clear refcount.
243 /*assert(fb->RefCount == 1);*/
246 /* NOTE: Delete should always be defined but there are two reports
247 * of it being NULL (bugs 13507, 14293). Work-around for now.
255 * Callback for deleting a renderbuffer object. Called by _mesa_HashDeleteAll()
258 delete_renderbuffer_cb(GLuint id, void *data, void *userData)
260 struct gl_context *ctx = (struct gl_context *) userData;
261 struct gl_renderbuffer *rb = (struct gl_renderbuffer *) data;
262 rb->RefCount = 0; /* see comment for FBOs above */
269 * Callback for deleting a sampler object. Called by _mesa_HashDeleteAll()
272 delete_sampler_object_cb(GLuint id, void *data, void *userData)
274 struct gl_context *ctx = (struct gl_context *) userData;
275 struct gl_sampler_object *sampObj = (struct gl_sampler_object *) data;
276 _mesa_reference_sampler_object(ctx, &sampObj, NULL);
281 * Deallocate a shared state object and all children structures.
283 * \param ctx GL context.
284 * \param shared shared state pointer.
286 * Frees the display lists, the texture objects (calling the driver texture
287 * deletion callback to free its private data) and the vertex programs, as well
288 * as their hash tables.
290 * \sa alloc_shared_state().
293 free_shared_state(struct gl_context *ctx, struct gl_shared_state *shared)
297 /* Free the dummy/fallback texture objects */
298 for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
299 if (shared->FallbackTex[i])
300 ctx->Driver.DeleteTexture(ctx, shared->FallbackTex[i]);
306 _mesa_HashDeleteAll(shared->DisplayList, delete_displaylist_cb, ctx);
307 _mesa_DeleteHashTable(shared->DisplayList);
309 _mesa_HashWalk(shared->ShaderObjects, free_shader_program_data_cb, ctx);
310 _mesa_HashDeleteAll(shared->ShaderObjects, delete_shader_cb, ctx);
311 _mesa_DeleteHashTable(shared->ShaderObjects);
313 _mesa_HashDeleteAll(shared->Programs, delete_program_cb, ctx);
314 _mesa_DeleteHashTable(shared->Programs);
316 _mesa_reference_vertprog(ctx, &shared->DefaultVertexProgram, NULL);
317 _mesa_reference_fragprog(ctx, &shared->DefaultFragmentProgram, NULL);
319 _mesa_HashDeleteAll(shared->ATIShaders, delete_fragshader_cb, ctx);
320 _mesa_DeleteHashTable(shared->ATIShaders);
321 _mesa_delete_ati_fragment_shader(ctx, shared->DefaultFragmentShader);
323 _mesa_HashDeleteAll(shared->BufferObjects, delete_bufferobj_cb, ctx);
324 _mesa_DeleteHashTable(shared->BufferObjects);
326 _mesa_HashDeleteAll(shared->FrameBuffers, delete_framebuffer_cb, ctx);
327 _mesa_DeleteHashTable(shared->FrameBuffers);
328 _mesa_HashDeleteAll(shared->RenderBuffers, delete_renderbuffer_cb, ctx);
329 _mesa_DeleteHashTable(shared->RenderBuffers);
331 _mesa_reference_buffer_object(ctx, &shared->NullBufferObj, NULL);
334 struct set_entry *entry;
336 set_foreach(shared->SyncObjects, entry) {
337 _mesa_unref_sync_object(ctx, (struct gl_sync_object *) entry->key);
340 _mesa_set_destroy(shared->SyncObjects, NULL);
342 _mesa_HashDeleteAll(shared->SamplerObjects, delete_sampler_object_cb, ctx);
343 _mesa_DeleteHashTable(shared->SamplerObjects);
346 * Free texture objects (after FBOs since some textures might have
347 * been bound to FBOs).
349 ASSERT(ctx->Driver.DeleteTexture);
350 /* the default textures */
351 for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
352 ctx->Driver.DeleteTexture(ctx, shared->DefaultTex[i]);
355 /* all other textures */
356 _mesa_HashDeleteAll(shared->TexObjects, delete_texture_cb, ctx);
357 _mesa_DeleteHashTable(shared->TexObjects);
359 _glthread_DESTROY_MUTEX(shared->Mutex);
360 _glthread_DESTROY_MUTEX(shared->TexMutex);
367 * gl_shared_state objects are ref counted.
368 * If ptr's refcount goes to zero, free the shared state.
371 _mesa_reference_shared_state(struct gl_context *ctx,
372 struct gl_shared_state **ptr,
373 struct gl_shared_state *state)
379 /* unref old state */
380 struct gl_shared_state *old = *ptr;
383 _glthread_LOCK_MUTEX(old->Mutex);
384 assert(old->RefCount >= 1);
386 delete = (old->RefCount == 0);
387 _glthread_UNLOCK_MUTEX(old->Mutex);
390 free_shared_state(ctx, old);
397 /* reference new state */
398 _glthread_LOCK_MUTEX(state->Mutex);
401 _glthread_UNLOCK_MUTEX(state->Mutex);