vbo_save.c revision 848b8605 
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
36static 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.SaveFlushVertices = vbo_save_SaveFlushVertices;
41   ctx->Driver.BeginCallList = vbo_save_BeginCallList;
42   ctx->Driver.EndCallList = vbo_save_EndCallList;
43   ctx->Driver.NotifySaveBegin = vbo_save_NotifyBegin;
44}
45
46
47
48/**
49 * Called at context creation time.
50 */
51void vbo_save_init( struct gl_context *ctx )
52{
53   struct vbo_context *vbo = vbo_context(ctx);
54   struct vbo_save_context *save = &vbo->save;
55
56   save->ctx = ctx;
57
58   vbo_save_api_init( save );
59   vbo_save_callback_init(ctx);
60
61   {
62      struct gl_client_array *arrays = save->arrays;
63      unsigned i;
64
65      memcpy(arrays, &vbo->currval[VBO_ATTRIB_POS],
66             VERT_ATTRIB_FF_MAX * sizeof(arrays[0]));
67      for (i = 0; i < VERT_ATTRIB_FF_MAX; ++i) {
68         struct gl_client_array *array;
69         array = &arrays[VERT_ATTRIB_FF(i)];
70         array->BufferObj = NULL;
71         _mesa_reference_buffer_object(ctx, &arrays->BufferObj,
72                                       vbo->currval[VBO_ATTRIB_POS+i].BufferObj);
73      }
74
75      memcpy(arrays + VERT_ATTRIB_GENERIC(0),
76             &vbo->currval[VBO_ATTRIB_GENERIC0],
77             VERT_ATTRIB_GENERIC_MAX * sizeof(arrays[0]));
78
79      for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; ++i) {
80         struct gl_client_array *array;
81         array = &arrays[VERT_ATTRIB_GENERIC(i)];
82         array->BufferObj = NULL;
83         _mesa_reference_buffer_object(ctx, &array->BufferObj,
84                           vbo->currval[VBO_ATTRIB_GENERIC0+i].BufferObj);
85      }
86   }
87
88   ctx->Driver.CurrentSavePrimitive = PRIM_OUTSIDE_BEGIN_END;
89}
90
91
92void vbo_save_destroy( struct gl_context *ctx )
93{
94   struct vbo_context *vbo = vbo_context(ctx);
95   struct vbo_save_context *save = &vbo->save;
96   GLuint i;
97
98   if (save->prim_store) {
99      if ( --save->prim_store->refcount == 0 ) {
100         free(save->prim_store);
101         save->prim_store = NULL;
102      }
103      if ( --save->vertex_store->refcount == 0 ) {
104         _mesa_reference_buffer_object(ctx,
105                                       &save->vertex_store->bufferobj, NULL);
106         free(save->vertex_store);
107         save->vertex_store = NULL;
108      }
109   }
110
111   for (i = 0; i < VBO_ATTRIB_MAX; i++) {
112      _mesa_reference_buffer_object(ctx, &save->arrays[i].BufferObj, NULL);
113   }
114}
115
116
117
118
119/* Note that this can occur during the playback of a display list:
120 */
121void vbo_save_fallback( struct gl_context *ctx, GLboolean fallback )
122{
123   struct vbo_save_context *save = &vbo_context(ctx)->save;
124
125   if (fallback)
126      save->replay_flags |= VBO_SAVE_FALLBACK;
127   else
128      save->replay_flags &= ~VBO_SAVE_FALLBACK;
129}
130