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/* Authors:  Keith Whitwell <keith@tungstengraphics.com>
29 */
30
31#include "sp_context.h"
32#include "sp_state.h"
33#include "sp_tile_cache.h"
34
35#include "draw/draw_context.h"
36
37#include "util/u_format.h"
38#include "util/u_inlines.h"
39
40
41/**
42 * XXX this might get moved someday
43 * Set the framebuffer surface info: color buffers, zbuffer, stencil buffer.
44 * Here, we flush the old surfaces and update the tile cache to point to the new
45 * surfaces.
46 */
47void
48softpipe_set_framebuffer_state(struct pipe_context *pipe,
49                               const struct pipe_framebuffer_state *fb)
50{
51   struct softpipe_context *sp = softpipe_context(pipe);
52   uint i;
53
54   draw_flush(sp->draw);
55
56   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
57      /* check if changing cbuf */
58      if (sp->framebuffer.cbufs[i] != fb->cbufs[i]) {
59         /* flush old */
60         sp_flush_tile_cache(sp->cbuf_cache[i]);
61
62         /* assign new */
63         pipe_surface_reference(&sp->framebuffer.cbufs[i], fb->cbufs[i]);
64
65         /* update cache */
66         sp_tile_cache_set_surface(sp->cbuf_cache[i], fb->cbufs[i]);
67      }
68   }
69
70   sp->framebuffer.nr_cbufs = fb->nr_cbufs;
71
72   /* zbuf changing? */
73   if (sp->framebuffer.zsbuf != fb->zsbuf) {
74      /* flush old */
75      sp_flush_tile_cache(sp->zsbuf_cache);
76
77      /* assign new */
78      pipe_surface_reference(&sp->framebuffer.zsbuf, fb->zsbuf);
79
80      /* update cache */
81      sp_tile_cache_set_surface(sp->zsbuf_cache, fb->zsbuf);
82
83      /* Tell draw module how deep the Z/depth buffer is */
84      if (sp->framebuffer.zsbuf) {
85         int depth_bits;
86         double mrd;
87         depth_bits = util_format_get_component_bits(sp->framebuffer.zsbuf->format,
88                                                     UTIL_FORMAT_COLORSPACE_ZS,
89                                                     0);
90         if (depth_bits > 16) {
91            mrd = 0.0000001;
92         }
93         else {
94            mrd = 0.00002;
95         }
96         draw_set_mrd(sp->draw, mrd);
97      }
98   }
99
100   sp->framebuffer.width = fb->width;
101   sp->framebuffer.height = fb->height;
102
103   sp->dirty |= SP_NEW_FRAMEBUFFER;
104}
105