2 * Mesa 3-D graphics library
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 * Shared-context state
31 #include "mfeatures.h"
34 #if FEATURE_ATI_fragment_shader
35 #include "atifragshader.h"
37 #include "bufferobj.h"
39 #include "program/program.h"
41 #if FEATURE_ARB_sampler_objects
42 #include "samplerobj.h"
44 #include "shaderobj.h"
49 * Allocate and initialize a shared context state structure.
50 * Initializes the display list, texture objects and vertex programs hash
51 * tables, allocates the texture objects. If it runs out of memory, frees
52 * everything already allocated before returning NULL.
54 * \return pointer to a gl_shared_state structure on success, or NULL on
57 struct gl_shared_state *
58 _mesa_alloc_shared_state(struct gl_context *ctx)
60 struct gl_shared_state *shared;
63 shared = CALLOC_STRUCT(gl_shared_state);
67 _glthread_INIT_MUTEX(shared->Mutex);
69 shared->DisplayList = _mesa_NewHashTable();
70 shared->TexObjects = _mesa_NewHashTable();
71 shared->Programs = _mesa_NewHashTable();
73 #if FEATURE_ARB_vertex_program
74 shared->DefaultVertexProgram = (struct gl_vertex_program *)
75 ctx->Driver.NewProgram(ctx, GL_VERTEX_PROGRAM_ARB, 0);
78 #if FEATURE_ARB_fragment_program
79 shared->DefaultFragmentProgram = (struct gl_fragment_program *)
80 ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
83 #if FEATURE_ATI_fragment_shader
84 shared->ATIShaders = _mesa_NewHashTable();
85 shared->DefaultFragmentShader = _mesa_new_ati_fragment_shader(ctx, 0);
88 #if FEATURE_ARB_shader_objects
89 shared->ShaderObjects = _mesa_NewHashTable();
92 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
93 shared->BufferObjects = _mesa_NewHashTable();
96 #if FEATURE_ARB_sampler_objects
97 /* GL_ARB_sampler_objects */
98 shared->SamplerObjects = _mesa_NewHashTable();
101 /* Allocate the default buffer object */
102 shared->NullBufferObj = ctx->Driver.NewBufferObject(ctx, 0, 0);
104 /* Create default texture objects */
105 for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
106 /* NOTE: the order of these enums matches the TEXTURE_x_INDEX values */
107 static const GLenum targets[NUM_TEXTURE_TARGETS] = {
109 GL_TEXTURE_2D_ARRAY_EXT,
110 GL_TEXTURE_1D_ARRAY_EXT,
113 GL_TEXTURE_RECTANGLE_NV,
117 assert(Elements(targets) == NUM_TEXTURE_TARGETS);
118 shared->DefaultTex[i] = ctx->Driver.NewTextureObject(ctx, 0, targets[i]);
122 assert(shared->DefaultTex[TEXTURE_1D_INDEX]->RefCount == 1);
124 /* Mutex and timestamp for texobj state validation */
125 _glthread_INIT_MUTEX(shared->TexMutex);
126 shared->TextureStateStamp = 0;
128 #if FEATURE_EXT_framebuffer_object
129 shared->FrameBuffers = _mesa_NewHashTable();
130 shared->RenderBuffers = _mesa_NewHashTable();
133 make_empty_list(& shared->SyncObjects);
140 * Callback for deleting a display list. Called by _mesa_HashDeleteAll().
143 delete_displaylist_cb(GLuint id, void *data, void *userData)
145 struct gl_display_list *list = (struct gl_display_list *) data;
146 struct gl_context *ctx = (struct gl_context *) userData;
147 _mesa_delete_list(ctx, list);
152 * Callback for deleting a texture object. Called by _mesa_HashDeleteAll().
155 delete_texture_cb(GLuint id, void *data, void *userData)
157 struct gl_texture_object *texObj = (struct gl_texture_object *) data;
158 struct gl_context *ctx = (struct gl_context *) userData;
159 ctx->Driver.DeleteTexture(ctx, texObj);
164 * Callback for deleting a program object. Called by _mesa_HashDeleteAll().
167 delete_program_cb(GLuint id, void *data, void *userData)
169 struct gl_program *prog = (struct gl_program *) data;
170 struct gl_context *ctx = (struct gl_context *) userData;
171 if(prog != &_mesa_DummyProgram) {
172 ASSERT(prog->RefCount == 1); /* should only be referenced by hash table */
173 prog->RefCount = 0; /* now going away */
174 ctx->Driver.DeleteProgram(ctx, prog);
179 #if FEATURE_ATI_fragment_shader
181 * Callback for deleting an ATI fragment shader object.
182 * Called by _mesa_HashDeleteAll().
185 delete_fragshader_cb(GLuint id, void *data, void *userData)
187 struct ati_fragment_shader *shader = (struct ati_fragment_shader *) data;
188 struct gl_context *ctx = (struct gl_context *) userData;
189 _mesa_delete_ati_fragment_shader(ctx, shader);
195 * Callback for deleting a buffer object. Called by _mesa_HashDeleteAll().
198 delete_bufferobj_cb(GLuint id, void *data, void *userData)
200 struct gl_buffer_object *bufObj = (struct gl_buffer_object *) data;
201 struct gl_context *ctx = (struct gl_context *) userData;
202 if (_mesa_bufferobj_mapped(bufObj)) {
203 ctx->Driver.UnmapBuffer(ctx, 0, bufObj);
204 bufObj->Pointer = NULL;
206 _mesa_reference_buffer_object(ctx, &bufObj, NULL);
211 * Callback for freeing shader program data. Call it before delete_shader_cb
212 * to avoid memory access error.
215 free_shader_program_data_cb(GLuint id, void *data, void *userData)
217 struct gl_context *ctx = (struct gl_context *) userData;
218 struct gl_shader_program *shProg = (struct gl_shader_program *) data;
220 if (shProg->Type == GL_SHADER_PROGRAM_MESA) {
221 _mesa_free_shader_program_data(ctx, shProg);
227 * Callback for deleting shader and shader programs objects.
228 * Called by _mesa_HashDeleteAll().
231 delete_shader_cb(GLuint id, void *data, void *userData)
233 struct gl_context *ctx = (struct gl_context *) userData;
234 struct gl_shader *sh = (struct gl_shader *) data;
235 if (sh->Type == GL_FRAGMENT_SHADER || sh->Type == GL_VERTEX_SHADER) {
236 ctx->Driver.DeleteShader(ctx, sh);
239 struct gl_shader_program *shProg = (struct gl_shader_program *) data;
240 ASSERT(shProg->Type == GL_SHADER_PROGRAM_MESA);
241 ctx->Driver.DeleteShaderProgram(ctx, shProg);
247 * Callback for deleting a framebuffer object. Called by _mesa_HashDeleteAll()
250 delete_framebuffer_cb(GLuint id, void *data, void *userData)
252 struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
253 /* The fact that the framebuffer is in the hashtable means its refcount
254 * is one, but we're removing from the hashtable now. So clear refcount.
256 /*assert(fb->RefCount == 1);*/
259 /* NOTE: Delete should always be defined but there are two reports
260 * of it being NULL (bugs 13507, 14293). Work-around for now.
268 * Callback for deleting a renderbuffer object. Called by _mesa_HashDeleteAll()
271 delete_renderbuffer_cb(GLuint id, void *data, void *userData)
273 struct gl_renderbuffer *rb = (struct gl_renderbuffer *) data;
274 rb->RefCount = 0; /* see comment for FBOs above */
280 #if FEATURE_ARB_sampler_objects
282 * Callback for deleting a sampler object. Called by _mesa_HashDeleteAll()
285 delete_sampler_object_cb(GLuint id, void *data, void *userData)
287 struct gl_context *ctx = (struct gl_context *) userData;
288 struct gl_sampler_object *sampObj = (struct gl_sampler_object *) data;
289 _mesa_reference_sampler_object(ctx, &sampObj, NULL);
295 * Deallocate a shared state object and all children structures.
297 * \param ctx GL context.
298 * \param shared shared state pointer.
300 * Frees the display lists, the texture objects (calling the driver texture
301 * deletion callback to free its private data) and the vertex programs, as well
302 * as their hash tables.
304 * \sa alloc_shared_state().
307 free_shared_state(struct gl_context *ctx, struct gl_shared_state *shared)
311 /* Free the dummy/fallback texture object */
312 if (shared->FallbackTex)
313 ctx->Driver.DeleteTexture(ctx, shared->FallbackTex);
318 _mesa_HashDeleteAll(shared->DisplayList, delete_displaylist_cb, ctx);
319 _mesa_DeleteHashTable(shared->DisplayList);
321 #if FEATURE_ARB_shader_objects
322 _mesa_HashWalk(shared->ShaderObjects, free_shader_program_data_cb, ctx);
323 _mesa_HashDeleteAll(shared->ShaderObjects, delete_shader_cb, ctx);
324 _mesa_DeleteHashTable(shared->ShaderObjects);
327 _mesa_HashDeleteAll(shared->Programs, delete_program_cb, ctx);
328 _mesa_DeleteHashTable(shared->Programs);
330 #if FEATURE_ARB_vertex_program
331 _mesa_reference_vertprog(ctx, &shared->DefaultVertexProgram, NULL);
334 #if FEATURE_ARB_fragment_program
335 _mesa_reference_fragprog(ctx, &shared->DefaultFragmentProgram, NULL);
338 #if FEATURE_ATI_fragment_shader
339 _mesa_HashDeleteAll(shared->ATIShaders, delete_fragshader_cb, ctx);
340 _mesa_DeleteHashTable(shared->ATIShaders);
341 _mesa_delete_ati_fragment_shader(ctx, shared->DefaultFragmentShader);
344 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
345 _mesa_HashDeleteAll(shared->BufferObjects, delete_bufferobj_cb, ctx);
346 _mesa_DeleteHashTable(shared->BufferObjects);
349 #if FEATURE_EXT_framebuffer_object
350 _mesa_HashDeleteAll(shared->FrameBuffers, delete_framebuffer_cb, ctx);
351 _mesa_DeleteHashTable(shared->FrameBuffers);
352 _mesa_HashDeleteAll(shared->RenderBuffers, delete_renderbuffer_cb, ctx);
353 _mesa_DeleteHashTable(shared->RenderBuffers);
356 #if FEATURE_ARB_vertex_buffer_object
357 _mesa_reference_buffer_object(ctx, &shared->NullBufferObj, NULL);
361 struct simple_node *node;
362 struct simple_node *temp;
364 foreach_s(node, temp, & shared->SyncObjects) {
365 _mesa_unref_sync_object(ctx, (struct gl_sync_object *) node);
369 #if FEATURE_ARB_sampler_objects
370 _mesa_HashDeleteAll(shared->SamplerObjects, delete_sampler_object_cb, ctx);
371 _mesa_DeleteHashTable(shared->SamplerObjects);
375 * Free texture objects (after FBOs since some textures might have
376 * been bound to FBOs).
378 ASSERT(ctx->Driver.DeleteTexture);
379 /* the default textures */
380 for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
381 ctx->Driver.DeleteTexture(ctx, shared->DefaultTex[i]);
384 /* all other textures */
385 _mesa_HashDeleteAll(shared->TexObjects, delete_texture_cb, ctx);
386 _mesa_DeleteHashTable(shared->TexObjects);
388 _glthread_DESTROY_MUTEX(shared->Mutex);
389 _glthread_DESTROY_MUTEX(shared->TexMutex);
396 * Decrement shared state object reference count and potentially free it
397 * and all children structures.
399 * \param ctx GL context.
400 * \param shared shared state pointer.
402 * \sa free_shared_state().
405 _mesa_release_shared_state(struct gl_context *ctx,
406 struct gl_shared_state *shared)
410 _glthread_LOCK_MUTEX(shared->Mutex);
411 RefCount = --shared->RefCount;
412 _glthread_UNLOCK_MUTEX(shared->Mutex);
414 assert(RefCount >= 0);
417 /* free shared state */
418 free_shared_state( ctx, shared );