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
  31
  32 #include "imports.h"
  33 #include "mtypes.h"
  34 #include "hash.h"
  35 #include "arrayobj.h"
  36 #include "bufferobj.h"
  37 #include "shared.h"
  38 #include "shader/program.h"
  39 #include "shader/shader_api.h"
  40 #if FEATURE_dlist
  41 #include "dlist.h"
  42 #endif
  43 #if FEATURE_ATI_fragment_shader
  44 #include "shader/atifragshader.h"
  45 #endif
  46 #if FEATURE_ARB_sync
  47 #include "syncobj.h"
  48 #endif
  49
  50 /**
  51  * Allocate and initialize a shared context state structure.
  52  * Initializes the display list, texture objects and vertex programs hash
  53  * tables, allocates the texture objects. If it runs out of memory, frees
  54  * everything already allocated before returning NULL.
  55  *
  56  * \return pointer to a gl_shared_state structure on success, or NULL on
  57  * failure.
  58  */
  59 struct gl_shared_state *
  60 _mesa_alloc_shared_state(GLcontext *ctx)
  61 {
  62    struct gl_shared_state *shared;
  63    GLuint i;
  64
  65    shared = CALLOC_STRUCT(gl_shared_state);
  66    if (!shared)
  67       return NULL;
  68
  69    _glthread_INIT_MUTEX(shared->Mutex);
  70
  71    shared->DisplayList = _mesa_NewHashTable();
  72    shared->TexObjects = _mesa_NewHashTable();
  73    shared->Programs = _mesa_NewHashTable();
  74
  75 #if FEATURE_ARB_vertex_program
  76    shared->DefaultVertexProgram = (struct gl_vertex_program *)
  77       ctx->Driver.NewProgram(ctx, GL_VERTEX_PROGRAM_ARB, 0);
  78 #endif
  79
  80 #if FEATURE_ARB_fragment_program
  81    shared->DefaultFragmentProgram = (struct gl_fragment_program *)
  82       ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
  83 #endif
  84
  85 #if FEATURE_ATI_fragment_shader
  86    shared->ATIShaders = _mesa_NewHashTable();
  87    shared->DefaultFragmentShader = _mesa_new_ati_fragment_shader(ctx, 0);
  88 #endif
  89
  90 #if FEATURE_ARB_shader_objects
  91    shared->ShaderObjects = _mesa_NewHashTable();
  92 #endif
  93
  94 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
  95    shared->BufferObjects = _mesa_NewHashTable();
  96 #endif
  97
  98    /* Allocate the default buffer object and set refcount so high that
  99     * it never gets deleted.
 100     * XXX with recent/improved refcounting this may not longer be needed.
 101     */
 102    shared->NullBufferObj = ctx->Driver.NewBufferObject(ctx, 0, 0);
 103    shared->NullBufferObj->RefCount = 1000 * 1000 * 1000;
 104
 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,
 111          GL_TEXTURE_CUBE_MAP,
 112          GL_TEXTURE_3D,
 113          GL_TEXTURE_RECTANGLE_NV,
 114          GL_TEXTURE_2D,
 115          GL_TEXTURE_1D
 116       };
 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 #if FEATURE_ARB_sync
 133    make_empty_list(& shared->SyncObjects);
 134 #endif
 135
 136    return shared;
 137 }
 138
 139
 140 /**
 141  * Callback for deleting a display list.  Called by _mesa_HashDeleteAll().
 142  */
 143 static void
 144 delete_displaylist_cb(GLuint id, void *data, void *userData)
 145 {
 146 #if FEATURE_dlist
 147    struct gl_display_list *list = (struct gl_display_list *) data;
 148    GLcontext *ctx = (GLcontext *) userData;
 149    _mesa_delete_list(ctx, list);
 150 #endif
 151 }
 152
 153
 154 /**
 155  * Callback for deleting a texture object.  Called by _mesa_HashDeleteAll().
 156  */
 157 static void
 158 delete_texture_cb(GLuint id, void *data, void *userData)
 159 {
 160    struct gl_texture_object *texObj = (struct gl_texture_object *) data;
 161    GLcontext *ctx = (GLcontext *) userData;
 162    ctx->Driver.DeleteTexture(ctx, texObj);
 163 }
 164
 165
 166 /**
 167  * Callback for deleting a program object.  Called by _mesa_HashDeleteAll().
 168  */
 169 static void
 170 delete_program_cb(GLuint id, void *data, void *userData)
 171 {
 172    struct gl_program *prog = (struct gl_program *) data;
 173    GLcontext *ctx = (GLcontext *) userData;
 174    if(prog != &_mesa_DummyProgram) {
 175       ASSERT(prog->RefCount == 1); /* should only be referenced by hash table */
 176       prog->RefCount = 0;  /* now going away */
 177       ctx->Driver.DeleteProgram(ctx, prog);
 178    }
 179 }
 180
 181
 182 #if FEATURE_ATI_fragment_shader
 183 /**
 184  * Callback for deleting an ATI fragment shader object.
 185  * Called by _mesa_HashDeleteAll().
 186  */
 187 static void
 188 delete_fragshader_cb(GLuint id, void *data, void *userData)
 189 {
 190    struct ati_fragment_shader *shader = (struct ati_fragment_shader *) data;
 191    GLcontext *ctx = (GLcontext *) userData;
 192    _mesa_delete_ati_fragment_shader(ctx, shader);
 193 }
 194 #endif
 195
 196
 197 /**
 198  * Callback for deleting a buffer object.  Called by _mesa_HashDeleteAll().
 199  */
 200 static void
 201 delete_bufferobj_cb(GLuint id, void *data, void *userData)
 202 {
 203    struct gl_buffer_object *bufObj = (struct gl_buffer_object *) data;
 204    GLcontext *ctx = (GLcontext *) userData;
 205    if (_mesa_bufferobj_mapped(bufObj)) {
 206       ctx->Driver.UnmapBuffer(ctx, 0, bufObj);
 207       bufObj->Pointer = NULL;
 208    }
 209    ctx->Driver.DeleteBuffer(ctx, bufObj);
 210 }
 211
 212
 213 /**
 214  * Callback for freeing shader program data. Call it before delete_shader_cb
 215  * to avoid memory access error.
 216  */
 217 static void
 218 free_shader_program_data_cb(GLuint id, void *data, void *userData)
 219 {
 220    GLcontext *ctx = (GLcontext *) userData;
 221    struct gl_shader_program *shProg = (struct gl_shader_program *) data;
 222
 223    if (shProg->Type == GL_SHADER_PROGRAM_MESA) {
 224        _mesa_free_shader_program_data(ctx, shProg);
 225    }
 226 }
 227
 228
 229 /**
 230  * Callback for deleting shader and shader programs objects.
 231  * Called by _mesa_HashDeleteAll().
 232  */
 233 static void
 234 delete_shader_cb(GLuint id, void *data, void *userData)
 235 {
 236    GLcontext *ctx = (GLcontext *) userData;
 237    struct gl_shader *sh = (struct gl_shader *) data;
 238    if (sh->Type == GL_FRAGMENT_SHADER || sh->Type == GL_VERTEX_SHADER) {
 239       _mesa_free_shader(ctx, sh);
 240    }
 241    else {
 242       struct gl_shader_program *shProg = (struct gl_shader_program *) data;
 243       ASSERT(shProg->Type == GL_SHADER_PROGRAM_MESA);
 244       _mesa_free_shader_program(ctx, shProg);
 245    }
 246 }
 247
 248
 249 /**
 250  * Callback for deleting a framebuffer object.  Called by _mesa_HashDeleteAll()
 251  */
 252 static void
 253 delete_framebuffer_cb(GLuint id, void *data, void *userData)
 254 {
 255    struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
 256    /* The fact that the framebuffer is in the hashtable means its refcount
 257     * is one, but we're removing from the hashtable now.  So clear refcount.
 258     */
 259    /*assert(fb->RefCount == 1);*/
 260    fb->RefCount = 0;
 261
 262    /* NOTE: Delete should always be defined but there are two reports
 263     * of it being NULL (bugs 13507, 14293).  Work-around for now.
 264     */
 265    if (fb->Delete)
 266       fb->Delete(fb);
 267 }
 268
 269
 270 /**
 271  * Callback for deleting a renderbuffer object. Called by _mesa_HashDeleteAll()
 272  */
 273 static void
 274 delete_renderbuffer_cb(GLuint id, void *data, void *userData)
 275 {
 276    struct gl_renderbuffer *rb = (struct gl_renderbuffer *) data;
 277    rb->RefCount = 0;  /* see comment for FBOs above */
 278    if (rb->Delete)
 279       rb->Delete(rb);
 280 }
 281
 282
 283 /**
 284  * Deallocate a shared state object and all children structures.
 285  *
 286  * \param ctx GL context.
 287  * \param shared shared state pointer.
 288  *
 289  * Frees the display lists, the texture objects (calling the driver texture
 290  * deletion callback to free its private data) and the vertex programs, as well
 291  * as their hash tables.
 292  *
 293  * \sa alloc_shared_state().
 294  */
 295 void
 296 _mesa_free_shared_state(GLcontext *ctx, struct gl_shared_state *shared)
 297 {
 298    GLuint i;
 299
 300    /*
 301     * Free display lists
 302     */
 303    _mesa_HashDeleteAll(shared->DisplayList, delete_displaylist_cb, ctx);
 304    _mesa_DeleteHashTable(shared->DisplayList);
 305
 306 #if FEATURE_ARB_shader_objects
 307    _mesa_HashWalk(shared->ShaderObjects, free_shader_program_data_cb, ctx);
 308    _mesa_HashDeleteAll(shared->ShaderObjects, delete_shader_cb, ctx);
 309    _mesa_DeleteHashTable(shared->ShaderObjects);
 310 #endif
 311
 312    _mesa_HashDeleteAll(shared->Programs, delete_program_cb, ctx);
 313    _mesa_DeleteHashTable(shared->Programs);
 314
 315 #if FEATURE_ARB_vertex_program
 316    _mesa_reference_vertprog(ctx, &shared->DefaultVertexProgram, NULL);
 317 #endif
 318
 319 #if FEATURE_ARB_fragment_program
 320    _mesa_reference_fragprog(ctx, &shared->DefaultFragmentProgram, NULL);
 321 #endif
 322
 323 #if FEATURE_ATI_fragment_shader
 324    _mesa_HashDeleteAll(shared->ATIShaders, delete_fragshader_cb, ctx);
 325    _mesa_DeleteHashTable(shared->ATIShaders);
 326    _mesa_delete_ati_fragment_shader(ctx, shared->DefaultFragmentShader);
 327 #endif
 328
 329 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
 330    _mesa_HashDeleteAll(shared->BufferObjects, delete_bufferobj_cb, ctx);
 331    _mesa_DeleteHashTable(shared->BufferObjects);
 332 #endif
 333
 334 #if FEATURE_EXT_framebuffer_object
 335    _mesa_HashDeleteAll(shared->FrameBuffers, delete_framebuffer_cb, ctx);
 336    _mesa_DeleteHashTable(shared->FrameBuffers);
 337    _mesa_HashDeleteAll(shared->RenderBuffers, delete_renderbuffer_cb, ctx);
 338    _mesa_DeleteHashTable(shared->RenderBuffers);
 339 #endif
 340
 341 #if FEATURE_ARB_vertex_buffer_object
 342    ctx->Driver.DeleteBuffer(ctx, shared->NullBufferObj);
 343 #endif
 344
 345 #if FEATURE_ARB_sync
 346    {
 347       struct simple_node *node;
 348       struct simple_node *temp;
 349
 350       foreach_s(node, temp, & shared->SyncObjects) {
 351          _mesa_unref_sync_object(ctx, (struct gl_sync_object *) node);
 352       }
 353    }
 354 #endif
 355
 356    /*
 357     * Free texture objects (after FBOs since some textures might have
 358     * been bound to FBOs).
 359     */
 360    ASSERT(ctx->Driver.DeleteTexture);
 361    /* the default textures */
 362    for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 363       ctx->Driver.DeleteTexture(ctx, shared->DefaultTex[i]);
 364    }
 365
 366    /* all other textures */
 367    _mesa_HashDeleteAll(shared->TexObjects, delete_texture_cb, ctx);
 368    _mesa_DeleteHashTable(shared->TexObjects);
 369
 370    _glthread_DESTROY_MUTEX(shared->Mutex);
 371    _glthread_DESTROY_MUTEX(shared->TexMutex);
 372
 373    _mesa_free(shared);
 374 }