st_cb_flush.c revision 47fc2c4349746997704a7f81dffadd22363e0ff1 
1/**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * 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
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 /*
29  * Authors:
30  *   Keith Whitwell <keith@tungstengraphics.com>
31  *   Brian Paul
32  */
33
34#include "main/glheader.h"
35#include "main/macros.h"
36#include "st_context.h"
37#include "st_cb_flush.h"
38#include "pipe/p_context.h"
39#include "pipe/p_defines.h"
40#include "pipe/p_winsys.h"
41
42
43static void st_flush(GLcontext *ctx)
44{
45   struct st_context *st = ctx->st;
46
47   /* If there has been no rendering to the frontbuffer, consider
48    * short-circuiting this, or perhaps pass an "optional" flag down
49    * to the driver so that it can make the decision.
50    */
51   st->pipe->flush( st->pipe, 0 );
52
53
54   /* XXX: temporary hack.  This flag should only be set if we do any
55    * rendering to the front buffer.
56    */
57   st->flags.frontbuffer_dirty = (ctx->DrawBuffer->_ColorDrawBufferMask[0] ==
58				  BUFFER_BIT_FRONT_LEFT);
59
60
61   if (st->flags.frontbuffer_dirty) {
62      /* Hook for copying "fake" frontbuffer if necessary:
63       */
64      st->pipe->winsys->flush_frontbuffer( st->pipe->winsys );
65      st->flags.frontbuffer_dirty = 0;
66   }
67}
68
69static void st_finish(GLcontext *ctx)
70{
71   struct st_context *st = ctx->st;
72
73   st_flush( ctx );
74   st->pipe->winsys->wait_idle( st->pipe->winsys );
75}
76
77
78void st_init_flush_functions(struct dd_function_table *functions)
79{
80   functions->Flush = st_flush;
81   functions->Finish = st_finish;
82}
83