st_cb_flush.c revision adfbba476db1fc55006efb748656ebb1a481d143 
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_clear.h"
41#include "st_cb_fbo.h"
42#include "st_public.h"
43#include "pipe/p_context.h"
44#include "pipe/p_defines.h"
45#include "pipe/p_screen.h"
46#include "util/u_gen_mipmap.h"
47#include "util/u_blit.h"
48
49
50static INLINE GLboolean
51is_front_buffer_dirty(struct st_context *st)
52{
53   return st->frontbuffer_status == FRONT_STATUS_DIRTY;
54}
55
56
57/**
58 * Tell the screen to display the front color buffer on-screen.
59 */
60static void
61display_front_buffer(struct st_context *st)
62{
63   GLframebuffer *fb = st->ctx->DrawBuffer;
64   struct st_renderbuffer *strb
65      = st_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
66   struct pipe_surface *front_surf = strb->surface;
67
68   /* Hook for copying "fake" frontbuffer if necessary:
69    */
70   st->pipe->screen->flush_frontbuffer( st->pipe->screen, front_surf,
71                                        st->pipe->priv );
72
73   /*
74   st->frontbuffer_status = FRONT_STATUS_UNDEFINED;
75   */
76}
77
78
79void st_flush( struct st_context *st, uint pipeFlushFlags,
80               struct pipe_fence_handle **fence )
81{
82   FLUSH_VERTICES(st->ctx, 0);
83
84   /* Release any vertex buffers that might potentially be accessed in
85    * successive frames:
86    */
87   st_flush_bitmap(st);
88   st_flush_clear(st);
89   util_blit_flush(st->blit);
90   util_gen_mipmap_flush(st->gen_mipmap);
91
92   st->pipe->flush( st->pipe, pipeFlushFlags, fence );
93}
94
95
96/**
97 * Flush, and wait for completion.
98 */
99void st_finish( struct st_context *st )
100{
101   struct pipe_fence_handle *fence = NULL;
102
103   st_flush(st, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, &fence);
104
105   if(fence) {
106      st->pipe->screen->fence_finish(st->pipe->screen, fence, 0);
107      st->pipe->screen->fence_reference(st->pipe->screen, &fence, NULL);
108   }
109}
110
111
112
113/**
114 * Called via ctx->Driver.Flush()
115 */
116static void st_glFlush(GLcontext *ctx)
117{
118   struct st_context *st = ctx->st;
119
120   if (is_front_buffer_dirty(st)) {
121      st_finish(st);
122      display_front_buffer(st);
123   }
124   else {
125      st_flush(st, PIPE_FLUSH_RENDER_CACHE, NULL);
126   }
127}
128
129
130/**
131 * Called via ctx->Driver.Finish()
132 */
133static void st_glFinish(GLcontext *ctx)
134{
135   struct st_context *st = ctx->st;
136
137   st_finish(st);
138
139   if (is_front_buffer_dirty(st)) {
140      display_front_buffer(st);
141   }
142}
143
144
145void st_init_flush_functions(struct dd_function_table *functions)
146{
147   functions->Flush = st_glFlush;
148   functions->Finish = st_glFinish;
149}
150