reactos/dll/opengl/mesa/src/mesa/main/shared.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.5
   4  *
   5  * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
   6  *
   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:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  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.
  23  */
  24
  25 /**
  26  * \file shared.c
  27  * Shared-context state
  28  */
  29
  30 #include "imports.h"
  31 #include "mfeatures.h"
  32 #include "mtypes.h"
  33 #include "hash.h"
  34 #if FEATURE_ATI_fragment_shader
  35 #include "atifragshader.h"
  36 #endif
  37 #include "bufferobj.h"
  38 #include "shared.h"
  39 #include "program/program.h"
  40 #include "dlist.h"
  41 #if FEATURE_ARB_sampler_objects
  42 #include "samplerobj.h"
  43 #endif
  44 #include "shaderobj.h"
  45 #include "syncobj.h"
  46
  47
  48 /**
  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.
  53  *
  54  * \return pointer to a gl_shared_state structure on success, or NULL on
  55  * failure.
  56  */
  57 struct gl_shared_state *
  58 _mesa_alloc_shared_state(struct gl_context *ctx)
  59 {
  60    struct gl_shared_state *shared;
  61    GLuint i;
  62
  63    shared = CALLOC_STRUCT(gl_shared_state);
  64    if (!shared)
  65       return NULL;
  66
  67    _glthread_INIT_MUTEX(shared->Mutex);
  68
  69    shared->DisplayList = _mesa_NewHashTable();
  70    shared->TexObjects = _mesa_NewHashTable();
  71    shared->Programs = _mesa_NewHashTable();
  72
  73 #if FEATURE_ARB_vertex_program
  74    shared->DefaultVertexProgram = (struct gl_vertex_program *)
  75       ctx->Driver.NewProgram(ctx, GL_VERTEX_PROGRAM_ARB, 0);
  76 #endif
  77
  78 #if FEATURE_ARB_fragment_program
  79    shared->DefaultFragmentProgram = (struct gl_fragment_program *)
  80       ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
  81 #endif
  82
  83 #if FEATURE_ATI_fragment_shader
  84    shared->ATIShaders = _mesa_NewHashTable();
  85    shared->DefaultFragmentShader = _mesa_new_ati_fragment_shader(ctx, 0);
  86 #endif
  87
  88 #if FEATURE_ARB_shader_objects
  89    shared->ShaderObjects = _mesa_NewHashTable();
  90 #endif
  91
  92    shared->BufferObjects = _mesa_NewHashTable();
  93
  94 #if FEATURE_ARB_sampler_objects
  95    /* GL_ARB_sampler_objects */
  96    shared->SamplerObjects = _mesa_NewHashTable();
  97 #endif
  98
  99    /* Allocate the default buffer object */
 100    shared->NullBufferObj = ctx->Driver.NewBufferObject(ctx, 0, 0);
 101
 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] = {
 106          GL_TEXTURE_BUFFER,
 107          GL_TEXTURE_2D_ARRAY_EXT,
 108          GL_TEXTURE_1D_ARRAY_EXT,
 109          GL_TEXTURE_EXTERNAL_OES,
 110          GL_TEXTURE_CUBE_MAP,
 111          GL_TEXTURE_3D,
 112          GL_TEXTURE_RECTANGLE_NV,
 113          GL_TEXTURE_2D,
 114          GL_TEXTURE_1D
 115       };
 116       STATIC_ASSERT(Elements(targets) == NUM_TEXTURE_TARGETS);
 117       shared->DefaultTex[i] = ctx->Driver.NewTextureObject(ctx, 0, targets[i]);
 118    }
 119
 120    /* sanity check */
 121    assert(shared->DefaultTex[TEXTURE_1D_INDEX]->RefCount == 1);
 122
 123    /* Mutex and timestamp for texobj state validation */
 124    _glthread_INIT_MUTEX(shared->TexMutex);
 125    shared->TextureStateStamp = 0;
 126
 127 #if FEATURE_EXT_framebuffer_object
 128    shared->FrameBuffers = _mesa_NewHashTable();
 129    shared->RenderBuffers = _mesa_NewHashTable();
 130 #endif
 131
 132    make_empty_list(& shared->SyncObjects);
 133
 134    return shared;
 135 }
 136
 137
 138 /**
 139  * Callback for deleting a display list.  Called by _mesa_HashDeleteAll().
 140  */
 141 static void
 142 delete_displaylist_cb(GLuint id, void *data, void *userData)
 143 {
 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);
 147 }
 148
 149
 150 /**
 151  * Callback for deleting a texture object.  Called by _mesa_HashDeleteAll().
 152  */
 153 static void
 154 delete_texture_cb(GLuint id, void *data, void *userData)
 155 {
 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);
 159 }
 160
 161
 162 /**
 163  * Callback for deleting a program object.  Called by _mesa_HashDeleteAll().
 164  */
 165 static void
 166 delete_program_cb(GLuint id, void *data, void *userData)
 167 {
 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);
 174    }
 175 }
 176
 177
 178 #if FEATURE_ATI_fragment_shader
 179 /**
 180  * Callback for deleting an ATI fragment shader object.
 181  * Called by _mesa_HashDeleteAll().
 182  */
 183 static void
 184 delete_fragshader_cb(GLuint id, void *data, void *userData)
 185 {
 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);
 189 }
 190 #endif
 191
 192
 193 /**
 194  * Callback for deleting a buffer object.  Called by _mesa_HashDeleteAll().
 195  */
 196 static void
 197 delete_bufferobj_cb(GLuint id, void *data, void *userData)
 198 {
 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;
 204    }
 205    _mesa_reference_buffer_object(ctx, &bufObj, NULL);
 206 }
 207
 208
 209 /**
 210  * Callback for freeing shader program data. Call it before delete_shader_cb
 211  * to avoid memory access error.
 212  */
 213 static void
 214 free_shader_program_data_cb(GLuint id, void *data, void *userData)
 215 {
 216    struct gl_context *ctx = (struct gl_context *) userData;
 217    struct gl_shader_program *shProg = (struct gl_shader_program *) data;
 218
 219    if (shProg->Type == GL_SHADER_PROGRAM_MESA) {
 220        _mesa_free_shader_program_data(ctx, shProg);
 221    }
 222 }
 223
 224
 225 /**
 226  * Callback for deleting shader and shader programs objects.
 227  * Called by _mesa_HashDeleteAll().
 228  */
 229 static void
 230 delete_shader_cb(GLuint id, void *data, void *userData)
 231 {
 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);
 236    }
 237    else {
 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);
 241    }
 242 }
 243
 244
 245 /**
 246  * Callback for deleting a framebuffer object.  Called by _mesa_HashDeleteAll()
 247  */
 248 static void
 249 delete_framebuffer_cb(GLuint id, void *data, void *userData)
 250 {
 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.
 254     */
 255    /*assert(fb->RefCount == 1);*/
 256    fb->RefCount = 0;
 257
 258    /* NOTE: Delete should always be defined but there are two reports
 259     * of it being NULL (bugs 13507, 14293).  Work-around for now.
 260     */
 261    if (fb->Delete)
 262       fb->Delete(fb);
 263 }
 264
 265
 266 /**
 267  * Callback for deleting a renderbuffer object. Called by _mesa_HashDeleteAll()
 268  */
 269 static void
 270 delete_renderbuffer_cb(GLuint id, void *data, void *userData)
 271 {
 272    struct gl_renderbuffer *rb = (struct gl_renderbuffer *) data;
 273    rb->RefCount = 0;  /* see comment for FBOs above */
 274    if (rb->Delete)
 275       rb->Delete(rb);
 276 }
 277
 278
 279 #if FEATURE_ARB_sampler_objects
 280 /**
 281  * Callback for deleting a sampler object. Called by _mesa_HashDeleteAll()
 282  */
 283 static void
 284 delete_sampler_object_cb(GLuint id, void *data, void *userData)
 285 {
 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);
 289 }
 290 #endif
 291
 292
 293 /**
 294  * Deallocate a shared state object and all children structures.
 295  *
 296  * \param ctx GL context.
 297  * \param shared shared state pointer.
 298  *
 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.
 302  *
 303  * \sa alloc_shared_state().
 304  */
 305 static void
 306 free_shared_state(struct gl_context *ctx, struct gl_shared_state *shared)
 307 {
 308    GLuint i;
 309
 310    /* Free the dummy/fallback texture object */
 311    if (shared->FallbackTex)
 312       ctx->Driver.DeleteTexture(ctx, shared->FallbackTex);
 313
 314    /*
 315     * Free display lists
 316     */
 317    _mesa_HashDeleteAll(shared->DisplayList, delete_displaylist_cb, ctx);
 318    _mesa_DeleteHashTable(shared->DisplayList);
 319
 320 #if FEATURE_ARB_shader_objects
 321    _mesa_HashWalk(shared->ShaderObjects, free_shader_program_data_cb, ctx);
 322    _mesa_HashDeleteAll(shared->ShaderObjects, delete_shader_cb, ctx);
 323    _mesa_DeleteHashTable(shared->ShaderObjects);
 324 #endif
 325
 326    _mesa_HashDeleteAll(shared->Programs, delete_program_cb, ctx);
 327    _mesa_DeleteHashTable(shared->Programs);
 328
 329 #if FEATURE_ARB_vertex_program
 330    _mesa_reference_vertprog(ctx, &shared->DefaultVertexProgram, NULL);
 331 #endif
 332
 333 #if FEATURE_ARB_fragment_program
 334    _mesa_reference_fragprog(ctx, &shared->DefaultFragmentProgram, NULL);
 335 #endif
 336
 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);
 341 #endif
 342
 343    _mesa_HashDeleteAll(shared->BufferObjects, delete_bufferobj_cb, ctx);
 344    _mesa_DeleteHashTable(shared->BufferObjects);
 345
 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);
 351 #endif
 352
 353    _mesa_reference_buffer_object(ctx, &shared->NullBufferObj, NULL);
 354
 355    {
 356       struct simple_node *node;
 357       struct simple_node *temp;
 358
 359       foreach_s(node, temp, & shared->SyncObjects) {
 360          _mesa_unref_sync_object(ctx, (struct gl_sync_object *) node);
 361       }
 362    }
 363
 364 #if FEATURE_ARB_sampler_objects
 365    _mesa_HashDeleteAll(shared->SamplerObjects, delete_sampler_object_cb, ctx);
 366    _mesa_DeleteHashTable(shared->SamplerObjects);
 367 #endif
 368
 369    /*
 370     * Free texture objects (after FBOs since some textures might have
 371     * been bound to FBOs).
 372     */
 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]);
 377    }
 378
 379    /* all other textures */
 380    _mesa_HashDeleteAll(shared->TexObjects, delete_texture_cb, ctx);
 381    _mesa_DeleteHashTable(shared->TexObjects);
 382
 383    _glthread_DESTROY_MUTEX(shared->Mutex);
 384    _glthread_DESTROY_MUTEX(shared->TexMutex);
 385
 386    free(shared);
 387 }
 388
 389
 390 /**
 391  * gl_shared_state objects are ref counted.
 392  * If ptr's refcount goes to zero, free the shared state.
 393  */
 394 void
 395 _mesa_reference_shared_state(struct gl_context *ctx,
 396                              struct gl_shared_state **ptr,
 397                              struct gl_shared_state *state)
 398 {
 399    if (*ptr == state)
 400       return;
 401
 402    if (*ptr) {
 403       /* unref old state */
 404       struct gl_shared_state *old = *ptr;
 405       GLboolean delete;
 406
 407       _glthread_LOCK_MUTEX(old->Mutex);
 408       assert(old->RefCount >= 1);
 409       old->RefCount--;
 410       delete = (old->RefCount == 0);
 411       _glthread_UNLOCK_MUTEX(old->Mutex);
 412
 413       if (delete) {
 414          free_shared_state(ctx, old);
 415       }
 416
 417       *ptr = NULL;
 418    }
 419
 420    if (state) {
 421       /* reference new state */
 422       _glthread_LOCK_MUTEX(state->Mutex);
 423       state->RefCount++;
 424       *ptr = state;
 425       _glthread_UNLOCK_MUTEX(state->Mutex);
 426    }
 427 }