src/mesa/vbo/vbo_save.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.2
   4  *
   5  * Copyright (C) 1999-2008  Brian Paul   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  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Keith Whitwell <keith@tungstengraphics.com>
  27  */
  28
  29
  30 #include "main/mtypes.h"
  31 #include "main/bufferobj.h"
  32 #include "main/imports.h"
  33
  34 #include "vbo_context.h"
  35
  36
  37 static void vbo_save_callback_init( struct gl_context *ctx )
  38 {
  39    ctx->Driver.NewList = vbo_save_NewList;
  40    ctx->Driver.EndList = vbo_save_EndList;
  41    ctx->Driver.SaveFlushVertices = vbo_save_SaveFlushVertices;
  42    ctx->Driver.BeginCallList = vbo_save_BeginCallList;
  43    ctx->Driver.EndCallList = vbo_save_EndCallList;
  44    ctx->Driver.NotifySaveBegin = vbo_save_NotifyBegin;
  45 }
  46
  47
  48
  49 /**
  50  * Called at context creation time.
  51  */
  52 void vbo_save_init( struct gl_context *ctx )
  53 {
  54    struct vbo_context *vbo = vbo_context(ctx);
  55    struct vbo_save_context *save = &vbo->save;
  56
  57    save->ctx = ctx;
  58
  59    vbo_save_api_init( save );
  60    vbo_save_callback_init(ctx);
  61
  62    {
  63       struct gl_client_array *arrays = save->arrays;
  64       unsigned i;
  65
  66       memcpy(arrays, &vbo->currval[VBO_ATTRIB_POS],
  67              VERT_ATTRIB_FF_MAX * sizeof(arrays[0]));
  68       for (i = 0; i < VERT_ATTRIB_FF_MAX; ++i) {
  69          struct gl_client_array *array;
  70          array = &arrays[VERT_ATTRIB_FF(i)];
  71          array->BufferObj = NULL;
  72          _mesa_reference_buffer_object(ctx, &arrays->BufferObj,
  73                                        vbo->currval[VBO_ATTRIB_POS+i].BufferObj);
  74       }
  75
  76       memcpy(arrays + VERT_ATTRIB_GENERIC(0),
  77              &vbo->currval[VBO_ATTRIB_GENERIC0],
  78              VERT_ATTRIB_GENERIC_MAX * sizeof(arrays[0]));
  79
  80       for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; ++i) {
  81          struct gl_client_array *array;
  82          array = &arrays[VERT_ATTRIB_GENERIC(i)];
  83          array->BufferObj = NULL;
  84          _mesa_reference_buffer_object(ctx, &array->BufferObj,
  85                            vbo->currval[VBO_ATTRIB_GENERIC0+i].BufferObj);
  86       }
  87    }
  88
  89    ctx->Driver.CurrentSavePrimitive = PRIM_UNKNOWN;
  90 }
  91
  92
  93 void vbo_save_destroy( struct gl_context *ctx )
  94 {
  95    struct vbo_context *vbo = vbo_context(ctx);
  96    struct vbo_save_context *save = &vbo->save;
  97    GLuint i;
  98
  99    if (save->prim_store) {
 100       if ( --save->prim_store->refcount == 0 ) {
 101          free(save->prim_store);
 102          save->prim_store = NULL;
 103       }
 104       if ( --save->vertex_store->refcount == 0 ) {
 105          _mesa_reference_buffer_object(ctx,
 106                                        &save->vertex_store->bufferobj, NULL);
 107          free(save->vertex_store);
 108          save->vertex_store = NULL;
 109       }
 110    }
 111
 112    for (i = 0; i < VBO_ATTRIB_MAX; i++) {
 113       _mesa_reference_buffer_object(ctx, &save->arrays[i].BufferObj, NULL);
 114    }
 115 }
 116
 117
 118
 119
 120 /* Note that this can occur during the playback of a display list:
 121  */
 122 void vbo_save_fallback( struct gl_context *ctx, GLboolean fallback )
 123 {
 124    struct vbo_save_context *save = &vbo_context(ctx)->save;
 125
 126    if (fallback)
 127       save->replay_flags |= VBO_SAVE_FALLBACK;
 128    else
 129       save->replay_flags &= ~VBO_SAVE_FALLBACK;
 130 }