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 "pipe/p_state.h"
32 #include "util/u_inlines.h"
33 #include "util/u_framebuffer.h"
34 #include "util/u_surface.h"
35 #include "lp_context.h"
36 #include "lp_scene.h"
37 #include "lp_state.h"
38 #include "lp_setup.h"
39
40 #include "draw/draw_context.h"
41
42 #include "util/u_format.h"
43
44
45 /**
46 * Set the framebuffer surface info: color buffers, zbuffer, stencil buffer.
47 */
48 void
llvmpipe_set_framebuffer_state(struct pipe_context * pipe,const struct pipe_framebuffer_state * fb)49 llvmpipe_set_framebuffer_state(struct pipe_context *pipe,
50 const struct pipe_framebuffer_state *fb)
51 {
52 struct llvmpipe_context *lp = llvmpipe_context(pipe);
53
54 boolean changed = !util_framebuffer_state_equal(&lp->framebuffer, fb);
55
56 assert(fb->width <= LP_MAX_WIDTH);
57 assert(fb->height <= LP_MAX_HEIGHT);
58
59 if (changed) {
60
61 util_copy_framebuffer_state(&lp->framebuffer, fb);
62
63 if (LP_PERF & PERF_NO_DEPTH) {
64 pipe_surface_reference(&lp->framebuffer.zsbuf, NULL);
65 }
66
67 /* Tell draw module how deep the Z/depth buffer is */
68 if (lp->framebuffer.zsbuf) {
69 int depth_bits;
70 double mrd;
71 depth_bits = util_format_get_component_bits(lp->framebuffer.zsbuf->format,
72 UTIL_FORMAT_COLORSPACE_ZS,
73 0);
74 if (depth_bits > 16) {
75 mrd = 0.0000001;
76 }
77 else {
78 mrd = 0.00002;
79 }
80 lp->mrd = mrd;
81 draw_set_mrd(lp->draw, mrd);
82 }
83
84 lp_setup_bind_framebuffer( lp->setup, &lp->framebuffer );
85
86 lp->dirty |= LP_NEW_FRAMEBUFFER;
87 }
88 }
89