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 "shared.h"
  37 #include "shader/program.h"
  38 #include "shader/shader_api.h"
  39 #if FEATURE_dlist
  40 #include "dlist.h"
  41 #endif
  42 #if FEATURE_ATI_fragment_shader
  43 #include "shader/atifragshader.h"
  44 #endif
  45
  46
  47 /**
  48  * Allocate and initialize a shared context state structure.
  49  * Initializes the display list, texture objects and vertex programs hash
  50  * tables, allocates the texture objects. If it runs out of memory, frees
  51  * everything already allocated before returning NULL.
  52  *
  53  * \return pointer to a gl_shared_state structure on success, or NULL on
  54  * failure.
  55  */
  56 struct gl_shared_state *
  57 _mesa_alloc_shared_state(GLcontext *ctx)
  58 {
  59    struct gl_shared_state *shared;
  60    GLuint i;
  61
  62    shared = CALLOC_STRUCT(gl_shared_state);
  63    if (!shared)
  64       return NULL;
  65
  66    _glthread_INIT_MUTEX(shared->Mutex);
  67
  68    shared->DisplayList = _mesa_NewHashTable();
  69    shared->TexObjects = _mesa_NewHashTable();
  70    shared->Programs = _mesa_NewHashTable();
  71
  72 #if FEATURE_ARB_vertex_program
  73    shared->DefaultVertexProgram = (struct gl_vertex_program *)
  74       ctx->Driver.NewProgram(ctx, GL_VERTEX_PROGRAM_ARB, 0);
  75 #endif
  76
  77 #if FEATURE_ARB_fragment_program
  78    shared->DefaultFragmentProgram = (struct gl_fragment_program *)
  79       ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
  80 #endif
  81
  82 #if FEATURE_ATI_fragment_shader
  83    shared->ATIShaders = _mesa_NewHashTable();
  84    shared->DefaultFragmentShader = _mesa_new_ati_fragment_shader(ctx, 0);
  85 #endif
  86
  87 #if FEATURE_ARB_shader_objects
  88    shared->ShaderObjects = _mesa_NewHashTable();
  89 #endif
  90
  91 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
  92    shared->BufferObjects = _mesa_NewHashTable();
  93 #endif
  94
  95    shared->ArrayObjects = _mesa_NewHashTable();
  96
  97    /* Create default texture objects */
  98    for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
  99       /* NOTE: the order of these enums matches the TEXTURE_x_INDEX values */
 100       static const GLenum targets[NUM_TEXTURE_TARGETS] = {
 101          GL_TEXTURE_2D_ARRAY_EXT,
 102          GL_TEXTURE_1D_ARRAY_EXT,
 103          GL_TEXTURE_CUBE_MAP,
 104          GL_TEXTURE_3D,
 105          GL_TEXTURE_RECTANGLE_NV,
 106          GL_TEXTURE_2D,
 107          GL_TEXTURE_1D
 108       };
 109       shared->DefaultTex[i] = ctx->Driver.NewTextureObject(ctx, 0, targets[i]);
 110    }
 111
 112    /* sanity check */
 113    assert(shared->DefaultTex[TEXTURE_1D_INDEX]->RefCount == 1);
 114
 115    /* Mutex and timestamp for texobj state validation */
 116    _glthread_INIT_MUTEX(shared->TexMutex);
 117    shared->TextureStateStamp = 0;
 118
 119 #if FEATURE_EXT_framebuffer_object
 120    shared->FrameBuffers = _mesa_NewHashTable();
 121    shared->RenderBuffers = _mesa_NewHashTable();
 122 #endif
 123
 124    return shared;
 125 }
 126
 127
 128 /**
 129  * Callback for deleting a display list.  Called by _mesa_HashDeleteAll().
 130  */
 131 static void
 132 delete_displaylist_cb(GLuint id, void *data, void *userData)
 133 {
 134 #if FEATURE_dlist
 135    struct gl_display_list *list = (struct gl_display_list *) data;
 136    GLcontext *ctx = (GLcontext *) userData;
 137    _mesa_delete_list(ctx, list);
 138 #endif
 139 }
 140
 141
 142 /**
 143  * Callback for deleting a texture object.  Called by _mesa_HashDeleteAll().
 144  */
 145 static void
 146 delete_texture_cb(GLuint id, void *data, void *userData)
 147 {
 148    struct gl_texture_object *texObj = (struct gl_texture_object *) data;
 149    GLcontext *ctx = (GLcontext *) userData;
 150    ctx->Driver.DeleteTexture(ctx, texObj);
 151 }
 152
 153
 154 /**
 155  * Callback for deleting a program object.  Called by _mesa_HashDeleteAll().
 156  */
 157 static void
 158 delete_program_cb(GLuint id, void *data, void *userData)
 159 {
 160    struct gl_program *prog = (struct gl_program *) data;
 161    GLcontext *ctx = (GLcontext *) userData;
 162    ASSERT(prog->RefCount == 1); /* should only be referenced by hash table */
 163    prog->RefCount = 0;  /* now going away */
 164    ctx->Driver.DeleteProgram(ctx, prog);
 165 }
 166
 167
 168 #if FEATURE_ATI_fragment_shader
 169 /**
 170  * Callback for deleting an ATI fragment shader object.
 171  * Called by _mesa_HashDeleteAll().
 172  */
 173 static void
 174 delete_fragshader_cb(GLuint id, void *data, void *userData)
 175 {
 176    struct ati_fragment_shader *shader = (struct ati_fragment_shader *) data;
 177    GLcontext *ctx = (GLcontext *) userData;
 178    _mesa_delete_ati_fragment_shader(ctx, shader);
 179 }
 180 #endif
 181
 182
 183 /**
 184  * Callback for deleting a buffer object.  Called by _mesa_HashDeleteAll().
 185  */
 186 static void
 187 delete_bufferobj_cb(GLuint id, void *data, void *userData)
 188 {
 189    struct gl_buffer_object *bufObj = (struct gl_buffer_object *) data;
 190    GLcontext *ctx = (GLcontext *) userData;
 191    ctx->Driver.DeleteBuffer(ctx, bufObj);
 192 }
 193
 194
 195 /**
 196  * Callback for deleting an array object.  Called by _mesa_HashDeleteAll().
 197  */
 198 static void
 199 delete_arrayobj_cb(GLuint id, void *data, void *userData)
 200 {
 201    struct gl_array_object *arrayObj = (struct gl_array_object *) data;
 202    GLcontext *ctx = (GLcontext *) userData;
 203    _mesa_delete_array_object(ctx, arrayObj);
 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    _mesa_HashDeleteAll(shared->ArrayObjects, delete_arrayobj_cb, ctx);
 310    _mesa_DeleteHashTable(shared->ArrayObjects);
 311
 312 #if FEATURE_ARB_vertex_program
 313    _mesa_reference_vertprog(ctx, &shared->DefaultVertexProgram, NULL);
 314 #endif
 315
 316 #if FEATURE_ARB_fragment_program
 317    _mesa_reference_fragprog(ctx, &shared->DefaultFragmentProgram, NULL);
 318 #endif
 319
 320 #if FEATURE_ATI_fragment_shader
 321    _mesa_HashDeleteAll(shared->ATIShaders, delete_fragshader_cb, ctx);
 322    _mesa_DeleteHashTable(shared->ATIShaders);
 323    _mesa_delete_ati_fragment_shader(ctx, shared->DefaultFragmentShader);
 324 #endif
 325
 326 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
 327    _mesa_HashDeleteAll(shared->BufferObjects, delete_bufferobj_cb, ctx);
 328    _mesa_DeleteHashTable(shared->BufferObjects);
 329 #endif
 330
 331 #if FEATURE_EXT_framebuffer_object
 332    _mesa_HashDeleteAll(shared->FrameBuffers, delete_framebuffer_cb, ctx);
 333    _mesa_DeleteHashTable(shared->FrameBuffers);
 334    _mesa_HashDeleteAll(shared->RenderBuffers, delete_renderbuffer_cb, ctx);
 335    _mesa_DeleteHashTable(shared->RenderBuffers);
 336 #endif
 337
 338    /*
 339     * Free texture objects (after FBOs since some textures might have
 340     * been bound to FBOs).
 341     */
 342    ASSERT(ctx->Driver.DeleteTexture);
 343    /* the default textures */
 344    for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 345       ctx->Driver.DeleteTexture(ctx, shared->DefaultTex[i]);
 346    }
 347
 348    /* all other textures */
 349    _mesa_HashDeleteAll(shared->TexObjects, delete_texture_cb, ctx);
 350    _mesa_DeleteHashTable(shared->TexObjects);
 351
 352    _glthread_DESTROY_MUTEX(shared->Mutex);
 353    _glthread_DESTROY_MUTEX(shared->TexMutex);
 354
 355    _mesa_free(shared);
 356 }