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.NewList = vbo_save_NewList;
  39    ctx->Driver.EndList = vbo_save_EndList;
  40    ctx->Driver.BeginCallList = vbo_save_BeginCallList;
  41    ctx->Driver.EndCallList = vbo_save_EndCallList;
  42 }
  43
  44
  45
  46 /**
  47  * Called at context creation time.
  48  */
  49 void vbo_save_init( struct gl_context *ctx )
  50 {
  51    struct vbo_context *vbo = vbo_context(ctx);
  52    struct vbo_save_context *save = &vbo->save;
  53
  54    save->ctx = ctx;
  55
  56    vbo_save_api_init( save );
  57    vbo_save_callback_init(ctx);
  58
  59    {
  60       struct gl_client_array *arrays = save->arrays;
  61       unsigned i;
  62
  63       memcpy(arrays, &vbo->currval[VBO_ATTRIB_POS],
  64              VERT_ATTRIB_FF_MAX * sizeof(arrays[0]));
  65       for (i = 0; i < VERT_ATTRIB_FF_MAX; ++i) {
  66          struct gl_client_array *array;
  67          array = &arrays[VERT_ATTRIB_FF(i)];
  68          array->BufferObj = NULL;
  69          _mesa_reference_buffer_object(ctx, &arrays->BufferObj,
  70                                        vbo->currval[VBO_ATTRIB_POS+i].BufferObj);
  71       }
  72
  73       memcpy(arrays + VERT_ATTRIB_GENERIC(0),
  74              &vbo->currval[VBO_ATTRIB_GENERIC0],
  75              VERT_ATTRIB_GENERIC_MAX * sizeof(arrays[0]));
  76
  77       for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; ++i) {
  78          struct gl_client_array *array;
  79          array = &arrays[VERT_ATTRIB_GENERIC(i)];
  80          array->BufferObj = NULL;
  81          _mesa_reference_buffer_object(ctx, &array->BufferObj,
  82                            vbo->currval[VBO_ATTRIB_GENERIC0+i].BufferObj);
  83       }
  84    }
  85
  86    ctx->Driver.CurrentSavePrimitive = PRIM_OUTSIDE_BEGIN_END;
  87 }
  88
  89
  90 void vbo_save_destroy( struct gl_context *ctx )
  91 {
  92    struct vbo_context *vbo = vbo_context(ctx);
  93    struct vbo_save_context *save = &vbo->save;
  94    GLuint i;
  95
  96    if (save->prim_store) {
  97       if ( --save->prim_store->refcount == 0 ) {
  98          free(save->prim_store);
  99          save->prim_store = NULL;
 100       }
 101       if ( --save->vertex_store->refcount == 0 ) {
 102          _mesa_reference_buffer_object(ctx,
 103                                        &save->vertex_store->bufferobj, NULL);
 104          free(save->vertex_store);
 105          save->vertex_store = NULL;
 106       }
 107    }
 108
 109    for (i = 0; i < VBO_ATTRIB_MAX; i++) {
 110       _mesa_reference_buffer_object(ctx, &save->arrays[i].BufferObj, NULL);
 111    }
 112 }
 113
 114
 115
 116
 117 /* Note that this can occur during the playback of a display list:
 118  */
 119 void vbo_save_fallback( struct gl_context *ctx, GLboolean fallback )
 120 {
 121    struct vbo_save_context *save = &vbo_context(ctx)->save;
 122
 123    if (fallback)
 124       save->replay_flags |= VBO_SAVE_FALLBACK;
 125    else
 126       save->replay_flags &= ~VBO_SAVE_FALLBACK;
 127 }