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
  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(GLcontext *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 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
  93    shared->BufferObjects = _mesa_NewHashTable();
  94 #endif
  95
  96    /* Allocate the default buffer object and set refcount so high that
  97     * it never gets deleted.
  98     * XXX with recent/improved refcounting this may not longer be needed.
  99     */
 100    shared->NullBufferObj = ctx->Driver.NewBufferObject(ctx, 0, 0);
 101    shared->NullBufferObj->RefCount = 1000 * 1000 * 1000;
 102
 103    /* Create default texture objects */
 104    for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 105       /* NOTE: the order of these enums matches the TEXTURE_x_INDEX values */
 106       static const GLenum targets[NUM_TEXTURE_TARGETS] = {
 107          GL_TEXTURE_2D_ARRAY_EXT,
 108          GL_TEXTURE_1D_ARRAY_EXT,
 109          GL_TEXTURE_CUBE_MAP,
 110          GL_TEXTURE_3D,
 111          GL_TEXTURE_RECTANGLE_NV,
 112          GL_TEXTURE_2D,
 113          GL_TEXTURE_1D
 114       };
 115       shared->DefaultTex[i] = ctx->Driver.NewTextureObject(ctx, 0, targets[i]);
 116    }
 117
 118    /* sanity check */
 119    assert(shared->DefaultTex[TEXTURE_1D_INDEX]->RefCount == 1);
 120
 121    /* Mutex and timestamp for texobj state validation */
 122    _glthread_INIT_MUTEX(shared->TexMutex);
 123    shared->TextureStateStamp = 0;
 124
 125 #if FEATURE_EXT_framebuffer_object
 126    shared->FrameBuffers = _mesa_NewHashTable();
 127    shared->RenderBuffers = _mesa_NewHashTable();
 128 #endif
 129
 130    return shared;
 131 }
 132
 133
 134 /**
 135  * Callback for deleting a display list.  Called by _mesa_HashDeleteAll().
 136  */
 137 static void
 138 delete_displaylist_cb(GLuint id, void *data, void *userData)
 139 {
 140 #if FEATURE_dlist
 141    struct gl_display_list *list = (struct gl_display_list *) data;
 142    GLcontext *ctx = (GLcontext *) userData;
 143    _mesa_delete_list(ctx, list);
 144 #endif
 145 }
 146
 147
 148 /**
 149  * Callback for deleting a texture object.  Called by _mesa_HashDeleteAll().
 150  */
 151 static void
 152 delete_texture_cb(GLuint id, void *data, void *userData)
 153 {
 154    struct gl_texture_object *texObj = (struct gl_texture_object *) data;
 155    GLcontext *ctx = (GLcontext *) userData;
 156    ctx->Driver.DeleteTexture(ctx, texObj);
 157 }
 158
 159
 160 /**
 161  * Callback for deleting a program object.  Called by _mesa_HashDeleteAll().
 162  */
 163 static void
 164 delete_program_cb(GLuint id, void *data, void *userData)
 165 {
 166    struct gl_program *prog = (struct gl_program *) data;
 167    GLcontext *ctx = (GLcontext *) userData;
 168    if(prog != &_mesa_DummyProgram) {
 169       ASSERT(prog->RefCount == 1); /* should only be referenced by hash table */
 170       prog->RefCount = 0;  /* now going away */
 171       ctx->Driver.DeleteProgram(ctx, prog);
 172    }
 173 }
 174
 175
 176 #if FEATURE_ATI_fragment_shader
 177 /**
 178  * Callback for deleting an ATI fragment shader object.
 179  * Called by _mesa_HashDeleteAll().
 180  */
 181 static void
 182 delete_fragshader_cb(GLuint id, void *data, void *userData)
 183 {
 184    struct ati_fragment_shader *shader = (struct ati_fragment_shader *) data;
 185    GLcontext *ctx = (GLcontext *) userData;
 186    _mesa_delete_ati_fragment_shader(ctx, shader);
 187 }
 188 #endif
 189
 190
 191 /**
 192  * Callback for deleting a buffer object.  Called by _mesa_HashDeleteAll().
 193  */
 194 static void
 195 delete_bufferobj_cb(GLuint id, void *data, void *userData)
 196 {
 197    struct gl_buffer_object *bufObj = (struct gl_buffer_object *) data;
 198    GLcontext *ctx = (GLcontext *) userData;
 199    if (_mesa_bufferobj_mapped(bufObj)) {
 200       ctx->Driver.UnmapBuffer(ctx, 0, bufObj);
 201       bufObj->Pointer = NULL;
 202    }
 203    ctx->Driver.DeleteBuffer(ctx, bufObj);
 204 }
 205
 206
 207 /**
 208  * Callback for freeing shader program data. Call it before delete_shader_cb
 209  * to avoid memory access error.
 210  */
 211 static void
 212 free_shader_program_data_cb(GLuint id, void *data, void *userData)
 213 {
 214    GLcontext *ctx = (GLcontext *) userData;
 215    struct gl_shader_program *shProg = (struct gl_shader_program *) data;
 216
 217    if (shProg->Type == GL_SHADER_PROGRAM_MESA) {
 218        _mesa_free_shader_program_data(ctx, shProg);
 219    }
 220 }
 221
 222
 223 /**
 224  * Callback for deleting shader and shader programs objects.
 225  * Called by _mesa_HashDeleteAll().
 226  */
 227 static void
 228 delete_shader_cb(GLuint id, void *data, void *userData)
 229 {
 230    GLcontext *ctx = (GLcontext *) userData;
 231    struct gl_shader *sh = (struct gl_shader *) data;
 232    if (sh->Type == GL_FRAGMENT_SHADER || sh->Type == GL_VERTEX_SHADER) {
 233       _mesa_free_shader(ctx, sh);
 234    }
 235    else {
 236       struct gl_shader_program *shProg = (struct gl_shader_program *) data;
 237       ASSERT(shProg->Type == GL_SHADER_PROGRAM_MESA);
 238       _mesa_free_shader_program(ctx, shProg);
 239    }
 240 }
 241
 242
 243 /**
 244  * Callback for deleting a framebuffer object.  Called by _mesa_HashDeleteAll()
 245  */
 246 static void
 247 delete_framebuffer_cb(GLuint id, void *data, void *userData)
 248 {
 249    struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
 250    /* The fact that the framebuffer is in the hashtable means its refcount
 251     * is one, but we're removing from the hashtable now.  So clear refcount.
 252     */
 253    /*assert(fb->RefCount == 1);*/
 254    fb->RefCount = 0;
 255
 256    /* NOTE: Delete should always be defined but there are two reports
 257     * of it being NULL (bugs 13507, 14293).  Work-around for now.
 258     */
 259    if (fb->Delete)
 260       fb->Delete(fb);
 261 }
 262
 263
 264 /**
 265  * Callback for deleting a renderbuffer object. Called by _mesa_HashDeleteAll()
 266  */
 267 static void
 268 delete_renderbuffer_cb(GLuint id, void *data, void *userData)
 269 {
 270    struct gl_renderbuffer *rb = (struct gl_renderbuffer *) data;
 271    rb->RefCount = 0;  /* see comment for FBOs above */
 272    if (rb->Delete)
 273       rb->Delete(rb);
 274 }
 275
 276
 277 /**
 278  * Deallocate a shared state object and all children structures.
 279  *
 280  * \param ctx GL context.
 281  * \param shared shared state pointer.
 282  *
 283  * Frees the display lists, the texture objects (calling the driver texture
 284  * deletion callback to free its private data) and the vertex programs, as well
 285  * as their hash tables.
 286  *
 287  * \sa alloc_shared_state().
 288  */
 289 void
 290 _mesa_free_shared_state(GLcontext *ctx, struct gl_shared_state *shared)
 291 {
 292    GLuint i;
 293
 294    /*
 295     * Free display lists
 296     */
 297    _mesa_HashDeleteAll(shared->DisplayList, delete_displaylist_cb, ctx);
 298    _mesa_DeleteHashTable(shared->DisplayList);
 299
 300 #if FEATURE_ARB_shader_objects
 301    _mesa_HashWalk(shared->ShaderObjects, free_shader_program_data_cb, ctx);
 302    _mesa_HashDeleteAll(shared->ShaderObjects, delete_shader_cb, ctx);
 303    _mesa_DeleteHashTable(shared->ShaderObjects);
 304 #endif
 305
 306    _mesa_HashDeleteAll(shared->Programs, delete_program_cb, ctx);
 307    _mesa_DeleteHashTable(shared->Programs);
 308
 309 #if FEATURE_ARB_vertex_program
 310    _mesa_reference_vertprog(ctx, &shared->DefaultVertexProgram, NULL);
 311 #endif
 312
 313 #if FEATURE_ARB_fragment_program
 314    _mesa_reference_fragprog(ctx, &shared->DefaultFragmentProgram, NULL);
 315 #endif
 316
 317 #if FEATURE_ATI_fragment_shader
 318    _mesa_HashDeleteAll(shared->ATIShaders, delete_fragshader_cb, ctx);
 319    _mesa_DeleteHashTable(shared->ATIShaders);
 320    _mesa_delete_ati_fragment_shader(ctx, shared->DefaultFragmentShader);
 321 #endif
 322
 323 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
 324    _mesa_HashDeleteAll(shared->BufferObjects, delete_bufferobj_cb, ctx);
 325    _mesa_DeleteHashTable(shared->BufferObjects);
 326 #endif
 327
 328 #if FEATURE_EXT_framebuffer_object
 329    _mesa_HashDeleteAll(shared->FrameBuffers, delete_framebuffer_cb, ctx);
 330    _mesa_DeleteHashTable(shared->FrameBuffers);
 331    _mesa_HashDeleteAll(shared->RenderBuffers, delete_renderbuffer_cb, ctx);
 332    _mesa_DeleteHashTable(shared->RenderBuffers);
 333 #endif
 334
 335 #if FEATURE_ARB_vertex_buffer_object
 336    ctx->Driver.DeleteBuffer(ctx, shared->NullBufferObj);
 337 #endif
 338
 339    /*
 340     * Free texture objects (after FBOs since some textures might have
 341     * been bound to FBOs).
 342     */
 343    ASSERT(ctx->Driver.DeleteTexture);
 344    /* the default textures */
 345    for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 346       ctx->Driver.DeleteTexture(ctx, shared->DefaultTex[i]);
 347    }
 348
 349    /* all other textures */
 350    _mesa_HashDeleteAll(shared->TexObjects, delete_texture_cb, ctx);
 351    _mesa_DeleteHashTable(shared->TexObjects);
 352
 353    _glthread_DESTROY_MUTEX(shared->Mutex);
 354    _glthread_DESTROY_MUTEX(shared->TexMutex);
 355
 356    _mesa_free(shared);
 357 }