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 "st_context.h"
36 #include "st_cb_fbo.h"
37 #include "pipe/p_context.h"
41 * Update framebuffer state (color, depth, stencil, etc. buffers)
42 * XXX someday: separate draw/read buffers.
45 update_framebuffer_state( struct st_context
*st
)
47 struct pipe_framebuffer_state framebuffer
;
48 struct gl_framebuffer
*fb
= st
->ctx
->DrawBuffer
;
49 struct st_renderbuffer
*strb
;
52 memset(&framebuffer
, 0, sizeof(framebuffer
));
54 /* Examine Mesa's ctx->DrawBuffer->_ColorDrawBuffers state
55 * to determine which surfaces to draw to
57 framebuffer
.num_cbufs
= fb
->_NumColorDrawBuffers
[0];
58 for (i
= 0; i
< framebuffer
.num_cbufs
; i
++) {
59 strb
= st_renderbuffer(fb
->_ColorDrawBuffers
[0][i
]);
60 assert(strb
->surface
);
61 framebuffer
.cbufs
[i
] = strb
->surface
;
64 strb
= st_renderbuffer(fb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
);
66 strb
= st_renderbuffer(strb
->Base
.Wrapped
);
67 assert(strb
->surface
);
68 framebuffer
.zbuf
= strb
->surface
;
71 strb
= st_renderbuffer(fb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
);
73 strb
= st_renderbuffer(strb
->Base
.Wrapped
);
74 assert(strb
->surface
);
75 framebuffer
.sbuf
= strb
->surface
;
78 /* XXX: The memcmp is insufficient for eliminating redundant state changes,
79 * but we should probably do more work here to that end.
81 if (1 /*memcmp(&framebuffer, &st->state.framebuffer, sizeof(framebuffer)) != 0*/) {
82 st
->state
.framebuffer
= framebuffer
;
83 st
->pipe
->set_framebuffer_state( st
->pipe
, &framebuffer
);
88 const struct st_tracked_state st_update_framebuffer
= {
89 .name
= "st_update_framebuffer",
94 .update
= update_framebuffer_state