src/mesa/vbo/vbo_save.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   5  *
   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:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  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.
  23  *
  24  * Authors:
  25  *    Keith Whitwell <keithw@vmware.com>
  26  */
  27
  28
  29 #include "main/mtypes.h"
  30 #include "main/bufferobj.h"
  31 #include "main/imports.h"
  32
  33 #include "vbo_context.h"
  34
  35
  36 /**
  37  * Called at context creation time.
  38  */
  39 void vbo_save_init( struct gl_context *ctx )
  40 {
  41    struct vbo_context *vbo = vbo_context(ctx);
  42    struct vbo_save_context *save = &vbo->save;
  43
  44    save->ctx = ctx;
  45
  46    vbo_save_api_init( save );
  47
  48    {
  49       struct gl_client_array *arrays = save->arrays;
  50       unsigned i;
  51
  52       memcpy(arrays, &vbo->currval[VBO_ATTRIB_POS],
  53              VERT_ATTRIB_FF_MAX * sizeof(arrays[0]));
  54       for (i = 0; i < VERT_ATTRIB_FF_MAX; ++i) {
  55          struct gl_client_array *array;
  56          array = &arrays[VERT_ATTRIB_FF(i)];
  57          array->BufferObj = NULL;
  58          _mesa_reference_buffer_object(ctx, &arrays->BufferObj,
  59                                        vbo->currval[VBO_ATTRIB_POS+i].BufferObj);
  60       }
  61
  62       memcpy(arrays + VERT_ATTRIB_GENERIC(0),
  63              &vbo->currval[VBO_ATTRIB_GENERIC0],
  64              VERT_ATTRIB_GENERIC_MAX * sizeof(arrays[0]));
  65
  66       for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; ++i) {
  67          struct gl_client_array *array;
  68          array = &arrays[VERT_ATTRIB_GENERIC(i)];
  69          array->BufferObj = NULL;
  70          _mesa_reference_buffer_object(ctx, &array->BufferObj,
  71                            vbo->currval[VBO_ATTRIB_GENERIC0+i].BufferObj);
  72       }
  73    }
  74
  75    ctx->Driver.CurrentSavePrimitive = PRIM_OUTSIDE_BEGIN_END;
  76 }
  77
  78
  79 void vbo_save_destroy( struct gl_context *ctx )
  80 {
  81    struct vbo_context *vbo = vbo_context(ctx);
  82    struct vbo_save_context *save = &vbo->save;
  83    GLuint i;
  84
  85    if (save->prim_store) {
  86       if ( --save->prim_store->refcount == 0 ) {
  87          free(save->prim_store);
  88          save->prim_store = NULL;
  89       }
  90       if ( --save->vertex_store->refcount == 0 ) {
  91          _mesa_reference_buffer_object(ctx,
  92                                        &save->vertex_store->bufferobj, NULL);
  93          free(save->vertex_store);
  94          save->vertex_store = NULL;
  95       }
  96    }
  97
  98    for (i = 0; i < VBO_ATTRIB_MAX; i++) {
  99       _mesa_reference_buffer_object(ctx, &save->arrays[i].BufferObj, NULL);
 100    }
 101 }
 102
 103
 104
 105
 106 /* Note that this can occur during the playback of a display list:
 107  */
 108 void vbo_save_fallback( struct gl_context *ctx, GLboolean fallback )
 109 {
 110    struct vbo_save_context *save = &vbo_context(ctx)->save;
 111
 112    if (fallback)
 113       save->replay_flags |= VBO_SAVE_FALLBACK;
 114    else
 115       save->replay_flags &= ~VBO_SAVE_FALLBACK;
 116 }