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
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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
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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 =
75 gl_vertex_program(ctx->Driver.NewProgram(ctx,
76 GL_VERTEX_PROGRAM_ARB, 0));
79 #if FEATURE_ARB_fragment_program
80 shared->DefaultFragmentProgram =
81 gl_fragment_program(ctx->Driver.NewProgram(ctx,
82 GL_FRAGMENT_PROGRAM_ARB, 0));
85 #if FEATURE_ATI_fragment_shader
86 shared->ATIShaders = _mesa_NewHashTable();
87 shared->DefaultFragmentShader = _mesa_new_ati_fragment_shader(ctx, 0);
90 shared->ShaderObjects = _mesa_NewHashTable();
92 shared->BufferObjects = _mesa_NewHashTable();
94 #if FEATURE_ARB_sampler_objects
95 /* GL_ARB_sampler_objects */
96 shared->SamplerObjects = _mesa_NewHashTable();
99 /* Allocate the default buffer object */
100 shared->NullBufferObj = ctx->Driver.NewBufferObject(ctx, 0, 0);
102 /* Create default texture objects */
103 for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
104 /* NOTE: the order of these enums matches the TEXTURE_x_INDEX values */
105 static const GLenum targets[NUM_TEXTURE_TARGETS] = {
107 GL_TEXTURE_2D_ARRAY_EXT,
108 GL_TEXTURE_1D_ARRAY_EXT,
109 GL_TEXTURE_EXTERNAL_OES,
112 GL_TEXTURE_RECTANGLE_NV,
116 STATIC_ASSERT(Elements(targets) == NUM_TEXTURE_TARGETS);
117 shared->DefaultTex[i] = ctx->Driver.NewTextureObject(ctx, 0, targets[i]);
121 assert(shared->DefaultTex[TEXTURE_1D_INDEX]->RefCount == 1);
123 /* Mutex and timestamp for texobj state validation */
124 _glthread_INIT_MUTEX(shared->TexMutex);
125 shared->TextureStateStamp = 0;
127 #if FEATURE_EXT_framebuffer_object
128 shared->FrameBuffers = _mesa_NewHashTable();
129 shared->RenderBuffers = _mesa_NewHashTable();
132 make_empty_list(& shared->SyncObjects);
139 * Callback for deleting a display list. Called by _mesa_HashDeleteAll().
142 delete_displaylist_cb(GLuint id, void *data, void *userData)
144 struct gl_display_list *list = (struct gl_display_list *) data;
145 struct gl_context *ctx = (struct gl_context *) userData;
146 _mesa_delete_list(ctx, list);
151 * Callback for deleting a texture object. Called by _mesa_HashDeleteAll().
154 delete_texture_cb(GLuint id, void *data, void *userData)
156 struct gl_texture_object *texObj = (struct gl_texture_object *) data;
157 struct gl_context *ctx = (struct gl_context *) userData;
158 ctx->Driver.DeleteTexture(ctx, texObj);
163 * Callback for deleting a program object. Called by _mesa_HashDeleteAll().
166 delete_program_cb(GLuint id, void *data, void *userData)
168 struct gl_program *prog = (struct gl_program *) data;
169 struct gl_context *ctx = (struct gl_context *) userData;
170 if(prog != &_mesa_DummyProgram) {
171 ASSERT(prog->RefCount == 1); /* should only be referenced by hash table */
172 prog->RefCount = 0; /* now going away */
173 ctx->Driver.DeleteProgram(ctx, prog);
178 #if FEATURE_ATI_fragment_shader
180 * Callback for deleting an ATI fragment shader object.
181 * Called by _mesa_HashDeleteAll().
184 delete_fragshader_cb(GLuint id, void *data, void *userData)
186 struct ati_fragment_shader *shader = (struct ati_fragment_shader *) data;
187 struct gl_context *ctx = (struct gl_context *) userData;
188 _mesa_delete_ati_fragment_shader(ctx, shader);
194 * Callback for deleting a buffer object. Called by _mesa_HashDeleteAll().
197 delete_bufferobj_cb(GLuint id, void *data, void *userData)
199 struct gl_buffer_object *bufObj = (struct gl_buffer_object *) data;
200 struct gl_context *ctx = (struct gl_context *) userData;
201 if (_mesa_bufferobj_mapped(bufObj)) {
202 ctx->Driver.UnmapBuffer(ctx, bufObj);
203 bufObj->Pointer = NULL;
205 _mesa_reference_buffer_object(ctx, &bufObj, NULL);
210 * Callback for freeing shader program data. Call it before delete_shader_cb
211 * to avoid memory access error.
214 free_shader_program_data_cb(GLuint id, void *data, void *userData)
216 struct gl_context *ctx = (struct gl_context *) userData;
217 struct gl_shader_program *shProg = (struct gl_shader_program *) data;
219 if (shProg->Type == GL_SHADER_PROGRAM_MESA) {
220 _mesa_free_shader_program_data(ctx, shProg);
226 * Callback for deleting shader and shader programs objects.
227 * Called by _mesa_HashDeleteAll().
230 delete_shader_cb(GLuint id, void *data, void *userData)
232 struct gl_context *ctx = (struct gl_context *) userData;
233 struct gl_shader *sh = (struct gl_shader *) data;
234 if (sh->Type == GL_FRAGMENT_SHADER || sh->Type == GL_VERTEX_SHADER) {
235 ctx->Driver.DeleteShader(ctx, sh);
238 struct gl_shader_program *shProg = (struct gl_shader_program *) data;
239 ASSERT(shProg->Type == GL_SHADER_PROGRAM_MESA);
240 ctx->Driver.DeleteShaderProgram(ctx, shProg);
246 * Callback for deleting a framebuffer object. Called by _mesa_HashDeleteAll()
249 delete_framebuffer_cb(GLuint id, void *data, void *userData)
251 struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
252 /* The fact that the framebuffer is in the hashtable means its refcount
253 * is one, but we're removing from the hashtable now. So clear refcount.
255 /*assert(fb->RefCount == 1);*/
258 /* NOTE: Delete should always be defined but there are two reports
259 * of it being NULL (bugs 13507, 14293). Work-around for now.
267 * Callback for deleting a renderbuffer object. Called by _mesa_HashDeleteAll()
270 delete_renderbuffer_cb(GLuint id, void *data, void *userData)
272 struct gl_renderbuffer *rb = (struct gl_renderbuffer *) data;
273 rb->RefCount = 0; /* see comment for FBOs above */
279 #if FEATURE_ARB_sampler_objects
281 * Callback for deleting a sampler object. Called by _mesa_HashDeleteAll()
284 delete_sampler_object_cb(GLuint id, void *data, void *userData)
286 struct gl_context *ctx = (struct gl_context *) userData;
287 struct gl_sampler_object *sampObj = (struct gl_sampler_object *) data;
288 _mesa_reference_sampler_object(ctx, &sampObj, NULL);
294 * Deallocate a shared state object and all children structures.
296 * \param ctx GL context.
297 * \param shared shared state pointer.
299 * Frees the display lists, the texture objects (calling the driver texture
300 * deletion callback to free its private data) and the vertex programs, as well
301 * as their hash tables.
303 * \sa alloc_shared_state().
306 free_shared_state(struct gl_context *ctx, struct gl_shared_state *shared)
310 /* Free the dummy/fallback texture objects */
311 for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
312 if (shared->FallbackTex[i])
313 ctx->Driver.DeleteTexture(ctx, shared->FallbackTex[i]);
319 _mesa_HashDeleteAll(shared->DisplayList, delete_displaylist_cb, ctx);
320 _mesa_DeleteHashTable(shared->DisplayList);
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);
326 _mesa_HashDeleteAll(shared->Programs, delete_program_cb, ctx);
327 _mesa_DeleteHashTable(shared->Programs);
329 #if FEATURE_ARB_vertex_program
330 _mesa_reference_vertprog(ctx, &shared->DefaultVertexProgram, NULL);
333 #if FEATURE_ARB_fragment_program
334 _mesa_reference_fragprog(ctx, &shared->DefaultFragmentProgram, NULL);
337 #if FEATURE_ATI_fragment_shader
338 _mesa_HashDeleteAll(shared->ATIShaders, delete_fragshader_cb, ctx);
339 _mesa_DeleteHashTable(shared->ATIShaders);
340 _mesa_delete_ati_fragment_shader(ctx, shared->DefaultFragmentShader);
343 _mesa_HashDeleteAll(shared->BufferObjects, delete_bufferobj_cb, ctx);
344 _mesa_DeleteHashTable(shared->BufferObjects);
346 #if FEATURE_EXT_framebuffer_object
347 _mesa_HashDeleteAll(shared->FrameBuffers, delete_framebuffer_cb, ctx);
348 _mesa_DeleteHashTable(shared->FrameBuffers);
349 _mesa_HashDeleteAll(shared->RenderBuffers, delete_renderbuffer_cb, ctx);
350 _mesa_DeleteHashTable(shared->RenderBuffers);
353 _mesa_reference_buffer_object(ctx, &shared->NullBufferObj, NULL);
356 struct simple_node *node;
357 struct simple_node *temp;
359 foreach_s(node, temp, & shared->SyncObjects) {
360 _mesa_unref_sync_object(ctx, (struct gl_sync_object *) node);
364 #if FEATURE_ARB_sampler_objects
365 _mesa_HashDeleteAll(shared->SamplerObjects, delete_sampler_object_cb, ctx);
366 _mesa_DeleteHashTable(shared->SamplerObjects);
370 * Free texture objects (after FBOs since some textures might have
371 * been bound to FBOs).
373 ASSERT(ctx->Driver.DeleteTexture);
374 /* the default textures */
375 for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
376 ctx->Driver.DeleteTexture(ctx, shared->DefaultTex[i]);
379 /* all other textures */
380 _mesa_HashDeleteAll(shared->TexObjects, delete_texture_cb, ctx);
381 _mesa_DeleteHashTable(shared->TexObjects);
383 _glthread_DESTROY_MUTEX(shared->Mutex);
384 _glthread_DESTROY_MUTEX(shared->TexMutex);
391 * gl_shared_state objects are ref counted.
392 * If ptr's refcount goes to zero, free the shared state.
395 _mesa_reference_shared_state(struct gl_context *ctx,
396 struct gl_shared_state **ptr,
397 struct gl_shared_state *state)
403 /* unref old state */
404 struct gl_shared_state *old = *ptr;
407 _glthread_LOCK_MUTEX(old->Mutex);
408 assert(old->RefCount >= 1);
410 delete = (old->RefCount == 0);
411 _glthread_UNLOCK_MUTEX(old->Mutex);
414 free_shared_state(ctx, old);
421 /* reference new state */
422 _glthread_LOCK_MUTEX(state->Mutex);
425 _glthread_UNLOCK_MUTEX(state->Mutex);