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 st_renderbuffer
*strb
;
51 memset(&framebuffer
, 0, sizeof(framebuffer
));
53 /* Examine Mesa's ctx->DrawBuffer->_ColorDrawBuffers state
54 * to determine which surfaces to draw to
56 framebuffer
.num_cbufs
= st
->ctx
->DrawBuffer
->_NumColorDrawBuffers
[0];
57 for (i
= 0; i
< framebuffer
.num_cbufs
; i
++) {
58 strb
= st_renderbuffer(st
->ctx
->DrawBuffer
->_ColorDrawBuffers
[0][i
]);
59 assert(strb
->surface
);
60 framebuffer
.cbufs
[i
] = strb
->surface
;
63 strb
= st_renderbuffer(st
->ctx
->DrawBuffer
->_DepthBuffer
);
65 strb
= st_renderbuffer(strb
->Base
.Wrapped
);
66 assert(strb
->surface
);
67 framebuffer
.zbuf
= strb
->surface
;
70 strb
= st_renderbuffer(st
->ctx
->DrawBuffer
->_StencilBuffer
);
72 strb
= st_renderbuffer(strb
->Base
.Wrapped
);
73 assert(strb
->surface
);
74 framebuffer
.sbuf
= strb
->surface
;
77 /* XXX: The memcmp is insufficient for eliminating redundant state changes,
78 * but we should probably do more work here to that end.
80 if (1 /*memcmp(&framebuffer, &st->state.framebuffer, sizeof(framebuffer)) != 0*/) {
81 st
->state
.framebuffer
= framebuffer
;
82 st
->pipe
->set_framebuffer_state( st
->pipe
, &framebuffer
);
87 const struct st_tracked_state st_update_framebuffer
= {
88 .name
= "st_update_framebuffer",
93 .update
= update_framebuffer_state