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 */
vbo_save_init(struct gl_context * ctx)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_vertex_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_vertex_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_vertex_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
vbo_save_destroy(struct gl_context * ctx)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 */
vbo_save_fallback(struct gl_context * ctx,GLboolean fallback)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 }
117