st_cb_flush.c revision 311e40268414649f047ee177ba22a17a2d437843 
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 "main/context.h"
37#include "st_context.h"
38#include "st_cb_bitmap.h"
39#include "st_cb_flush.h"
40#include "st_cb_fbo.h"
41#include "st_public.h"
42#include "pipe/p_context.h"
43#include "pipe/p_defines.h"
44#include "pipe/p_winsys.h"
45
46
47static INLINE GLboolean
48is_front_buffer_dirty(struct st_context *st)
49{
50   return st->frontbuffer_status == FRONT_STATUS_DIRTY;
51}
52
53
54/**
55 * Tell the winsys to display the front color buffer on-screen.
56 */
57static void
58display_front_buffer(struct st_context *st)
59{
60   GLframebuffer *fb = st->ctx->DrawBuffer;
61   struct st_renderbuffer *strb
62      = st_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
63   struct pipe_surface *front_surf = strb->surface;
64
65   /* Hook for copying "fake" frontbuffer if necessary:
66    */
67   st->pipe->winsys->flush_frontbuffer( st->pipe->winsys, front_surf,
68                                        st->pipe->priv );
69
70   st->frontbuffer_status = FRONT_STATUS_UNDEFINED;
71}
72
73
74void st_flush( struct st_context *st, uint pipeFlushFlags,
75               struct pipe_fence_handle **fence )
76{
77   FLUSH_VERTICES(st->ctx, 0);
78
79   st_flush_bitmap_cache(st);
80
81   st->pipe->flush( st->pipe, pipeFlushFlags, fence );
82}
83
84
85/**
86 * Flush, and wait for completion.
87 */
88void st_finish( struct st_context *st )
89{
90   struct pipe_fence_handle *fence = NULL;
91
92   st_flush(st, PIPE_FLUSH_RENDER_CACHE, &fence);
93
94   st->pipe->winsys->fence_finish(st->pipe->winsys, fence, 0);
95   st->pipe->winsys->fence_reference(st->pipe->winsys, &fence, NULL);
96}
97
98
99
100/**
101 * Called via ctx->Driver.Flush()
102 */
103static void st_glFlush(GLcontext *ctx)
104{
105   struct st_context *st = ctx->st;
106
107   if (is_front_buffer_dirty(st)) {
108      st_finish(st);
109      display_front_buffer(st);
110   }
111   else {
112      st_flush(st, PIPE_FLUSH_RENDER_CACHE, NULL);
113   }
114}
115
116
117/**
118 * Called via ctx->Driver.Finish()
119 */
120static void st_glFinish(GLcontext *ctx)
121{
122   struct st_context *st = ctx->st;
123
124   st_finish(st);
125
126   if (is_front_buffer_dirty(st)) {
127      display_front_buffer(st);
128   }
129}
130
131
132void st_init_flush_functions(struct dd_function_table *functions)
133{
134   functions->Flush = st_glFlush;
135   functions->Finish = st_glFinish;
136}
137