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 static void vbo_save_callback_init( struct gl_context *ctx )
  37 {
  38    ctx->Driver.EndCallList = vbo_save_EndCallList;
  39 }
  40
  41
  42
  43 /**
  44  * Called at context creation time.
  45  */
  46 void vbo_save_init( struct gl_context *ctx )
  47 {
  48    struct vbo_context *vbo = vbo_context(ctx);
  49    struct vbo_save_context *save = &vbo->save;
  50
  51    save->ctx = ctx;
  52
  53    vbo_save_api_init( save );
  54    vbo_save_callback_init(ctx);
  55
  56    {
  57       struct gl_client_array *arrays = save->arrays;
  58       unsigned i;
  59
  60       memcpy(arrays, &vbo->currval[VBO_ATTRIB_POS],
  61              VERT_ATTRIB_FF_MAX * sizeof(arrays[0]));
  62       for (i = 0; i < VERT_ATTRIB_FF_MAX; ++i) {
  63          struct gl_client_array *array;
  64          array = &arrays[VERT_ATTRIB_FF(i)];
  65          array->BufferObj = NULL;
  66          _mesa_reference_buffer_object(ctx, &arrays->BufferObj,
  67                                        vbo->currval[VBO_ATTRIB_POS+i].BufferObj);
  68       }
  69
  70       memcpy(arrays + VERT_ATTRIB_GENERIC(0),
  71              &vbo->currval[VBO_ATTRIB_GENERIC0],
  72              VERT_ATTRIB_GENERIC_MAX * sizeof(arrays[0]));
  73
  74       for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; ++i) {
  75          struct gl_client_array *array;
  76          array = &arrays[VERT_ATTRIB_GENERIC(i)];
  77          array->BufferObj = NULL;
  78          _mesa_reference_buffer_object(ctx, &array->BufferObj,
  79                            vbo->currval[VBO_ATTRIB_GENERIC0+i].BufferObj);
  80       }
  81    }
  82
  83    ctx->Driver.CurrentSavePrimitive = PRIM_OUTSIDE_BEGIN_END;
  84 }
  85
  86
  87 void vbo_save_destroy( struct gl_context *ctx )
  88 {
  89    struct vbo_context *vbo = vbo_context(ctx);
  90    struct vbo_save_context *save = &vbo->save;
  91    GLuint i;
  92
  93    if (save->prim_store) {
  94       if ( --save->prim_store->refcount == 0 ) {
  95          free(save->prim_store);
  96          save->prim_store = NULL;
  97       }
  98       if ( --save->vertex_store->refcount == 0 ) {
  99          _mesa_reference_buffer_object(ctx,
 100                                        &save->vertex_store->bufferobj, NULL);
 101          free(save->vertex_store);
 102          save->vertex_store = NULL;
 103       }
 104    }
 105
 106    for (i = 0; i < VBO_ATTRIB_MAX; i++) {
 107       _mesa_reference_buffer_object(ctx, &save->arrays[i].BufferObj, NULL);
 108    }
 109 }
 110
 111
 112
 113
 114 /* Note that this can occur during the playback of a display list:
 115  */
 116 void vbo_save_fallback( struct gl_context *ctx, GLboolean fallback )
 117 {
 118    struct vbo_save_context *save = &vbo_context(ctx)->save;
 119
 120    if (fallback)
 121       save->replay_flags |= VBO_SAVE_FALLBACK;
 122    else
 123       save->replay_flags &= ~VBO_SAVE_FALLBACK;
 124 }