st_atom_framebuffer.c revision 7d95efde0a0e13e13c59444703bc47eb13926385 
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 "st_context.h"
35#include "st_atom.h"
36#include "st_cb_fbo.h"
37#include "pipe/p_context.h"
38#include "cso_cache/cso_context.h"
39
40
41/**
42 * Update framebuffer state (color, depth, stencil, etc. buffers)
43 * XXX someday: separate draw/read buffers.
44 */
45static void
46update_framebuffer_state( struct st_context *st )
47{
48   struct pipe_framebuffer_state framebuffer;
49   struct gl_framebuffer *fb = st->ctx->DrawBuffer;
50   struct st_renderbuffer *strb;
51   GLuint i;
52
53   memset(&framebuffer, 0, sizeof(framebuffer));
54
55   /* Examine Mesa's ctx->DrawBuffer->_ColorDrawBuffers state
56    * to determine which surfaces to draw to
57    */
58   framebuffer.num_cbufs = fb->_NumColorDrawBuffers[0];
59   for (i = 0; i < framebuffer.num_cbufs; i++) {
60      strb = st_renderbuffer(fb->_ColorDrawBuffers[0][i]);
61      assert(strb->surface);
62      framebuffer.cbufs[i] = strb->surface;
63   }
64
65   strb = st_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
66   if (strb) {
67      strb = st_renderbuffer(strb->Base.Wrapped);
68      assert(strb->surface);
69      framebuffer.zsbuf = strb->surface;
70   }
71   else {
72      strb = st_renderbuffer(fb->Attachment[BUFFER_STENCIL].Renderbuffer);
73      if (strb) {
74         strb = st_renderbuffer(strb->Base.Wrapped);
75         assert(strb->surface);
76         framebuffer.zsbuf = strb->surface;
77      }
78   }
79
80   cso_set_framebuffer(st->cso_context, &framebuffer);
81}
82
83
84const struct st_tracked_state st_update_framebuffer = {
85   .name = "st_update_framebuffer",
86   .dirty = {
87      .mesa = _NEW_BUFFERS,
88      .st  = 0,
89   },
90   .update = update_framebuffer_state
91};
92
93