1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
30 * Keith Whitwell <keith@tungstengraphics.com>
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"
48 flush_front_buffer(struct st_context
*st
, uint pipeFlushFlags
,
49 struct pipe_fence_handle
**fence
)
51 GLframebuffer
*fb
= st
->ctx
->DrawBuffer
;
56 /* XXX: temporary hack. This flag should only be set if we do any
57 * rendering to the front buffer.
59 * Further more, the scissor rectangle could be tracked to
60 * construct a dirty region of the front buffer, to avoid
61 * situations where it must be copied repeatedly.
63 * In the extreme case, some kind of timer could be set up to allow
64 * coalescing of multiple flushes to the frontbuffer, which can be
65 * quite a performance drain if there are a sufficient number of
68 st
->flags
.frontbuffer_dirty
69 = (fb
->_ColorDrawBufferMask
[0] & BUFFER_BIT_FRONT_LEFT
);
71 if (st
->flags
.frontbuffer_dirty
) {
72 struct st_renderbuffer
*strb
73 = st_renderbuffer(fb
->Attachment
[BUFFER_FRONT_LEFT
].Renderbuffer
);
74 struct pipe_surface
*front_surf
= strb
->surface
;
76 /* If we aren't rendering to the frontbuffer, this is a noop.
77 * This should be uncontroversial for glFlush, though people may
78 * feel more strongly about glFinish.
80 * Additionally, need to make sure that the frontbuffer_dirty
81 * flag really gets set on frontbuffer rendering.
83 st
->pipe
->flush( st
->pipe
, pipeFlushFlags
, fence
);
85 /* Hook for copying "fake" frontbuffer if necessary:
87 st
->pipe
->winsys
->flush_frontbuffer( st
->pipe
->winsys
, front_surf
,
89 st
->flags
.frontbuffer_dirty
= 0;
94 void st_flush( struct st_context
*st
, uint pipeFlushFlags
,
95 struct pipe_fence_handle
**fence
)
97 FLUSH_VERTICES(st
->ctx
, 0);
99 st_flush_bitmap_cache(st
);
101 st
->pipe
->flush( st
->pipe
, pipeFlushFlags
, fence
);
105 void st_finish( struct st_context
*st
)
107 struct pipe_fence_handle
*fence
= NULL
;
109 st_flush(st
, PIPE_FLUSH_RENDER_CACHE
, &fence
);
111 st
->pipe
->winsys
->fence_finish(st
->pipe
->winsys
, fence
, 0);
112 st
->pipe
->winsys
->fence_reference(st
->pipe
->winsys
, &fence
, NULL
);
118 * Called via ctx->Driver.Flush()
120 static void st_glFlush(GLcontext
*ctx
)
122 st_flush_bitmap_cache(ctx
->st
);
124 FLUSH_VERTICES(ctx
, 0);
126 flush_front_buffer(ctx
->st
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
131 * Called via ctx->Driver.Finish()
133 static void st_glFinish(GLcontext
*ctx
)
135 st_finish( ctx
->st
);
137 flush_front_buffer(ctx
->st
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
141 void st_init_flush_functions(struct dd_function_table
*functions
)
143 functions
->Flush
= st_glFlush
;
144 functions
->Finish
= st_glFinish
;