2 * Mesa 3-D graphics library
4 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
27 * Shared-context state
33 #include "atifragshader.h"
34 #include "bufferobj.h"
36 #include "program/program.h"
38 #include "samplerobj.h"
39 #include "shaderapi.h"
40 #include "shaderobj.h"
43 #include "util/hash_table.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 mtx_init(&shared
->Mutex
, mtx_plain
);
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);
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(ARRAY_SIZE(targets
) == NUM_TEXTURE_TARGETS
);
109 shared
->DefaultTex
[i
] = ctx
->Driver
.NewTextureObject(ctx
, 0, targets
[i
]);
110 /* Need to explicitly set/overwrite the TargetIndex field here since
111 * the call to _mesa_tex_target_to_index() in NewTextureObject() may
112 * fail if the texture target is not supported.
114 shared
->DefaultTex
[i
]->TargetIndex
= i
;
118 assert(shared
->DefaultTex
[TEXTURE_1D_INDEX
]->RefCount
== 1);
120 /* Mutex and timestamp for texobj state validation */
121 mtx_init(&shared
->TexMutex
, mtx_recursive
);
122 shared
->TextureStateStamp
= 0;
124 shared
->FrameBuffers
= _mesa_NewHashTable();
125 shared
->RenderBuffers
= _mesa_NewHashTable();
127 shared
->SyncObjects
= _mesa_set_create(NULL
, _mesa_hash_pointer
,
128 _mesa_key_pointer_equal
);
135 * Callback for deleting a display list. Called by _mesa_HashDeleteAll().
138 delete_displaylist_cb(GLuint id
, void *data
, void *userData
)
140 struct gl_display_list
*list
= (struct gl_display_list
*) data
;
141 struct gl_context
*ctx
= (struct gl_context
*) userData
;
142 _mesa_delete_list(ctx
, list
);
147 * Callback for deleting a texture object. Called by _mesa_HashDeleteAll().
150 delete_texture_cb(GLuint id
, void *data
, void *userData
)
152 struct gl_texture_object
*texObj
= (struct gl_texture_object
*) data
;
153 struct gl_context
*ctx
= (struct gl_context
*) userData
;
154 ctx
->Driver
.DeleteTexture(ctx
, texObj
);
159 * Callback for deleting a program object. Called by _mesa_HashDeleteAll().
162 delete_program_cb(GLuint id
, void *data
, void *userData
)
164 struct gl_program
*prog
= (struct gl_program
*) data
;
165 struct gl_context
*ctx
= (struct gl_context
*) userData
;
166 if(prog
!= &_mesa_DummyProgram
) {
167 assert(prog
->RefCount
== 1); /* should only be referenced by hash table */
168 prog
->RefCount
= 0; /* now going away */
169 ctx
->Driver
.DeleteProgram(ctx
, prog
);
175 * Callback for deleting an ATI fragment shader object.
176 * Called by _mesa_HashDeleteAll().
179 delete_fragshader_cb(GLuint id
, void *data
, void *userData
)
181 struct ati_fragment_shader
*shader
= (struct ati_fragment_shader
*) data
;
182 struct gl_context
*ctx
= (struct gl_context
*) userData
;
183 _mesa_delete_ati_fragment_shader(ctx
, shader
);
188 * Callback for deleting a buffer object. Called by _mesa_HashDeleteAll().
191 delete_bufferobj_cb(GLuint id
, void *data
, void *userData
)
193 struct gl_buffer_object
*bufObj
= (struct gl_buffer_object
*) data
;
194 struct gl_context
*ctx
= (struct gl_context
*) userData
;
196 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
197 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
202 * Callback for freeing shader program data. Call it before delete_shader_cb
203 * to avoid memory access error.
206 free_shader_program_data_cb(GLuint id
, void *data
, void *userData
)
208 struct gl_context
*ctx
= (struct gl_context
*) userData
;
209 struct gl_shader_program
*shProg
= (struct gl_shader_program
*) data
;
211 if (shProg
->Type
== GL_SHADER_PROGRAM_MESA
) {
212 _mesa_free_shader_program_data(ctx
, shProg
);
218 * Callback for deleting shader and shader programs objects.
219 * Called by _mesa_HashDeleteAll().
222 delete_shader_cb(GLuint id
, void *data
, void *userData
)
224 struct gl_context
*ctx
= (struct gl_context
*) userData
;
225 struct gl_shader
*sh
= (struct gl_shader
*) data
;
226 if (_mesa_validate_shader_target(ctx
, sh
->Type
)) {
227 _mesa_delete_shader(ctx
, sh
);
230 struct gl_shader_program
*shProg
= (struct gl_shader_program
*) data
;
231 assert(shProg
->Type
== GL_SHADER_PROGRAM_MESA
);
232 _mesa_delete_shader_program(ctx
, shProg
);
238 * Callback for deleting a framebuffer object. Called by _mesa_HashDeleteAll()
241 delete_framebuffer_cb(GLuint id
, void *data
, void *userData
)
243 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
244 /* The fact that the framebuffer is in the hashtable means its refcount
245 * is one, but we're removing from the hashtable now. So clear refcount.
247 /*assert(fb->RefCount == 1);*/
250 /* NOTE: Delete should always be defined but there are two reports
251 * of it being NULL (bugs 13507, 14293). Work-around for now.
259 * Callback for deleting a renderbuffer object. Called by _mesa_HashDeleteAll()
262 delete_renderbuffer_cb(GLuint id
, void *data
, void *userData
)
264 struct gl_context
*ctx
= (struct gl_context
*) userData
;
265 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) data
;
266 rb
->RefCount
= 0; /* see comment for FBOs above */
273 * Callback for deleting a sampler object. Called by _mesa_HashDeleteAll()
276 delete_sampler_object_cb(GLuint id
, void *data
, void *userData
)
278 struct gl_context
*ctx
= (struct gl_context
*) userData
;
279 struct gl_sampler_object
*sampObj
= (struct gl_sampler_object
*) data
;
280 _mesa_reference_sampler_object(ctx
, &sampObj
, NULL
);
285 * Deallocate a shared state object and all children structures.
287 * \param ctx GL context.
288 * \param shared shared state pointer.
290 * Frees the display lists, the texture objects (calling the driver texture
291 * deletion callback to free its private data) and the vertex programs, as well
292 * as their hash tables.
294 * \sa alloc_shared_state().
297 free_shared_state(struct gl_context
*ctx
, struct gl_shared_state
*shared
)
301 /* Free the dummy/fallback texture objects */
302 for (i
= 0; i
< NUM_TEXTURE_TARGETS
; i
++) {
303 if (shared
->FallbackTex
[i
])
304 ctx
->Driver
.DeleteTexture(ctx
, shared
->FallbackTex
[i
]);
310 _mesa_HashDeleteAll(shared
->DisplayList
, delete_displaylist_cb
, ctx
);
311 _mesa_DeleteHashTable(shared
->DisplayList
);
313 _mesa_HashWalk(shared
->ShaderObjects
, free_shader_program_data_cb
, ctx
);
314 _mesa_HashDeleteAll(shared
->ShaderObjects
, delete_shader_cb
, ctx
);
315 _mesa_DeleteHashTable(shared
->ShaderObjects
);
317 _mesa_HashDeleteAll(shared
->Programs
, delete_program_cb
, ctx
);
318 _mesa_DeleteHashTable(shared
->Programs
);
320 _mesa_reference_vertprog(ctx
, &shared
->DefaultVertexProgram
, NULL
);
321 _mesa_reference_fragprog(ctx
, &shared
->DefaultFragmentProgram
, NULL
);
323 _mesa_HashDeleteAll(shared
->ATIShaders
, delete_fragshader_cb
, ctx
);
324 _mesa_DeleteHashTable(shared
->ATIShaders
);
325 _mesa_delete_ati_fragment_shader(ctx
, shared
->DefaultFragmentShader
);
327 _mesa_HashDeleteAll(shared
->BufferObjects
, delete_bufferobj_cb
, ctx
);
328 _mesa_DeleteHashTable(shared
->BufferObjects
);
330 _mesa_HashDeleteAll(shared
->FrameBuffers
, delete_framebuffer_cb
, ctx
);
331 _mesa_DeleteHashTable(shared
->FrameBuffers
);
332 _mesa_HashDeleteAll(shared
->RenderBuffers
, delete_renderbuffer_cb
, ctx
);
333 _mesa_DeleteHashTable(shared
->RenderBuffers
);
335 _mesa_reference_buffer_object(ctx
, &shared
->NullBufferObj
, NULL
);
338 struct set_entry
*entry
;
340 set_foreach(shared
->SyncObjects
, entry
) {
341 _mesa_unref_sync_object(ctx
, (struct gl_sync_object
*) entry
->key
);
344 _mesa_set_destroy(shared
->SyncObjects
, NULL
);
346 _mesa_HashDeleteAll(shared
->SamplerObjects
, delete_sampler_object_cb
, ctx
);
347 _mesa_DeleteHashTable(shared
->SamplerObjects
);
350 * Free texture objects (after FBOs since some textures might have
351 * been bound to FBOs).
353 assert(ctx
->Driver
.DeleteTexture
);
354 /* the default textures */
355 for (i
= 0; i
< NUM_TEXTURE_TARGETS
; i
++) {
356 ctx
->Driver
.DeleteTexture(ctx
, shared
->DefaultTex
[i
]);
359 /* all other textures */
360 _mesa_HashDeleteAll(shared
->TexObjects
, delete_texture_cb
, ctx
);
361 _mesa_DeleteHashTable(shared
->TexObjects
);
363 mtx_destroy(&shared
->Mutex
);
364 mtx_destroy(&shared
->TexMutex
);
371 * gl_shared_state objects are ref counted.
372 * If ptr's refcount goes to zero, free the shared state.
375 _mesa_reference_shared_state(struct gl_context
*ctx
,
376 struct gl_shared_state
**ptr
,
377 struct gl_shared_state
*state
)
383 /* unref old state */
384 struct gl_shared_state
*old
= *ptr
;
387 mtx_lock(&old
->Mutex
);
388 assert(old
->RefCount
>= 1);
390 delete = (old
->RefCount
== 0);
391 mtx_unlock(&old
->Mutex
);
394 free_shared_state(ctx
, old
);
401 /* reference new state */
402 mtx_lock(&state
->Mutex
);
405 mtx_unlock(&state
->Mutex
);