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"),
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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
36 #include "bufferobj.h"
38 #include "shader/program.h"
39 #include "shader/shader_api.h"
41 #if FEATURE_ATI_fragment_shader
42 #include "shader/atifragshader.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(GLcontext *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 /* Allocate the default buffer object */
97 shared->NullBufferObj = ctx->Driver.NewBufferObject(ctx, 0, 0);
99 /* Set refcount so high that it never gets deleted.
100 * XXX with recent/improved refcounting this should be no longer be needed.
102 shared->NullBufferObj->RefCount = 1000 * 1000 * 1000;
105 /* Create default texture objects */
106 for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
107 /* NOTE: the order of these enums matches the TEXTURE_x_INDEX values */
108 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 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();
133 make_empty_list(& shared->SyncObjects);
141 * Callback for deleting a display list. Called by _mesa_HashDeleteAll().
144 delete_displaylist_cb(GLuint id, void *data, void *userData)
146 struct gl_display_list *list = (struct gl_display_list *) data;
147 GLcontext *ctx = (GLcontext *) userData;
148 _mesa_delete_list(ctx, list);
153 * Callback for deleting a texture object. Called by _mesa_HashDeleteAll().
156 delete_texture_cb(GLuint id, void *data, void *userData)
158 struct gl_texture_object *texObj = (struct gl_texture_object *) data;
159 GLcontext *ctx = (GLcontext *) userData;
160 ctx->Driver.DeleteTexture(ctx, texObj);
165 * Callback for deleting a program object. Called by _mesa_HashDeleteAll().
168 delete_program_cb(GLuint id, void *data, void *userData)
170 struct gl_program *prog = (struct gl_program *) data;
171 GLcontext *ctx = (GLcontext *) userData;
172 if(prog != &_mesa_DummyProgram) {
173 ASSERT(prog->RefCount == 1); /* should only be referenced by hash table */
174 prog->RefCount = 0; /* now going away */
175 ctx->Driver.DeleteProgram(ctx, prog);
180 #if FEATURE_ATI_fragment_shader
182 * Callback for deleting an ATI fragment shader object.
183 * Called by _mesa_HashDeleteAll().
186 delete_fragshader_cb(GLuint id, void *data, void *userData)
188 struct ati_fragment_shader *shader = (struct ati_fragment_shader *) data;
189 GLcontext *ctx = (GLcontext *) userData;
190 _mesa_delete_ati_fragment_shader(ctx, shader);
196 * Callback for deleting a buffer object. Called by _mesa_HashDeleteAll().
199 delete_bufferobj_cb(GLuint id, void *data, void *userData)
201 struct gl_buffer_object *bufObj = (struct gl_buffer_object *) data;
202 GLcontext *ctx = (GLcontext *) userData;
203 if (_mesa_bufferobj_mapped(bufObj)) {
204 ctx->Driver.UnmapBuffer(ctx, 0, bufObj);
205 bufObj->Pointer = NULL;
207 _mesa_reference_buffer_object(ctx, &bufObj, NULL);
212 * Callback for freeing shader program data. Call it before delete_shader_cb
213 * to avoid memory access error.
216 free_shader_program_data_cb(GLuint id, void *data, void *userData)
218 GLcontext *ctx = (GLcontext *) userData;
219 struct gl_shader_program *shProg = (struct gl_shader_program *) data;
221 if (shProg->Type == GL_SHADER_PROGRAM_MESA) {
222 _mesa_free_shader_program_data(ctx, shProg);
228 * Callback for deleting shader and shader programs objects.
229 * Called by _mesa_HashDeleteAll().
232 delete_shader_cb(GLuint id, void *data, void *userData)
234 GLcontext *ctx = (GLcontext *) userData;
235 struct gl_shader *sh = (struct gl_shader *) data;
236 if (sh->Type == GL_FRAGMENT_SHADER || sh->Type == GL_VERTEX_SHADER) {
237 _mesa_free_shader(ctx, sh);
240 struct gl_shader_program *shProg = (struct gl_shader_program *) data;
241 ASSERT(shProg->Type == GL_SHADER_PROGRAM_MESA);
242 _mesa_free_shader_program(ctx, shProg);
248 * Callback for deleting a framebuffer object. Called by _mesa_HashDeleteAll()
251 delete_framebuffer_cb(GLuint id, void *data, void *userData)
253 struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
254 /* The fact that the framebuffer is in the hashtable means its refcount
255 * is one, but we're removing from the hashtable now. So clear refcount.
257 /*assert(fb->RefCount == 1);*/
260 /* NOTE: Delete should always be defined but there are two reports
261 * of it being NULL (bugs 13507, 14293). Work-around for now.
269 * Callback for deleting a renderbuffer object. Called by _mesa_HashDeleteAll()
272 delete_renderbuffer_cb(GLuint id, void *data, void *userData)
274 struct gl_renderbuffer *rb = (struct gl_renderbuffer *) data;
275 rb->RefCount = 0; /* see comment for FBOs above */
282 * Deallocate a shared state object and all children structures.
284 * \param ctx GL context.
285 * \param shared shared state pointer.
287 * Frees the display lists, the texture objects (calling the driver texture
288 * deletion callback to free its private data) and the vertex programs, as well
289 * as their hash tables.
291 * \sa alloc_shared_state().
294 free_shared_state(GLcontext *ctx, struct gl_shared_state *shared)
301 _mesa_HashDeleteAll(shared->DisplayList, delete_displaylist_cb, ctx);
302 _mesa_DeleteHashTable(shared->DisplayList);
304 #if FEATURE_ARB_shader_objects
305 _mesa_HashWalk(shared->ShaderObjects, free_shader_program_data_cb, ctx);
306 _mesa_HashDeleteAll(shared->ShaderObjects, delete_shader_cb, ctx);
307 _mesa_DeleteHashTable(shared->ShaderObjects);
310 _mesa_HashDeleteAll(shared->Programs, delete_program_cb, ctx);
311 _mesa_DeleteHashTable(shared->Programs);
313 #if FEATURE_ARB_vertex_program
314 _mesa_reference_vertprog(ctx, &shared->DefaultVertexProgram, NULL);
317 #if FEATURE_ARB_fragment_program
318 _mesa_reference_fragprog(ctx, &shared->DefaultFragmentProgram, NULL);
321 #if FEATURE_ATI_fragment_shader
322 _mesa_HashDeleteAll(shared->ATIShaders, delete_fragshader_cb, ctx);
323 _mesa_DeleteHashTable(shared->ATIShaders);
324 _mesa_delete_ati_fragment_shader(ctx, shared->DefaultFragmentShader);
327 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
328 _mesa_HashDeleteAll(shared->BufferObjects, delete_bufferobj_cb, ctx);
329 _mesa_DeleteHashTable(shared->BufferObjects);
332 #if FEATURE_EXT_framebuffer_object
333 _mesa_HashDeleteAll(shared->FrameBuffers, delete_framebuffer_cb, ctx);
334 _mesa_DeleteHashTable(shared->FrameBuffers);
335 _mesa_HashDeleteAll(shared->RenderBuffers, delete_renderbuffer_cb, ctx);
336 _mesa_DeleteHashTable(shared->RenderBuffers);
339 #if FEATURE_ARB_vertex_buffer_object
340 _mesa_reference_buffer_object(ctx, &shared->NullBufferObj, NULL);
345 struct simple_node *node;
346 struct simple_node *temp;
348 foreach_s(node, temp, & shared->SyncObjects) {
349 _mesa_unref_sync_object(ctx, (struct gl_sync_object *) node);
355 * Free texture objects (after FBOs since some textures might have
356 * been bound to FBOs).
358 ASSERT(ctx->Driver.DeleteTexture);
359 /* the default textures */
360 for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
361 ctx->Driver.DeleteTexture(ctx, shared->DefaultTex[i]);
364 /* all other textures */
365 _mesa_HashDeleteAll(shared->TexObjects, delete_texture_cb, ctx);
366 _mesa_DeleteHashTable(shared->TexObjects);
368 _glthread_DESTROY_MUTEX(shared->Mutex);
369 _glthread_DESTROY_MUTEX(shared->TexMutex);
376 * Decrement shared state object reference count and potentially free it
377 * and all children structures.
379 * \param ctx GL context.
380 * \param shared shared state pointer.
382 * \sa free_shared_state().
385 _mesa_release_shared_state(GLcontext *ctx, struct gl_shared_state *shared)
389 _glthread_LOCK_MUTEX(shared->Mutex);
390 RefCount = --shared->RefCount;
391 _glthread_UNLOCK_MUTEX(shared->Mutex);
393 assert(RefCount >= 0);
396 /* free shared state */
397 free_shared_state( ctx, shared );