lp_state_surface.c revision 5f00819cb382bdb70c29e2db3c6ff22a879bf10f 
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 */
48void
49llvmpipe_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         draw_set_mrd(lp->draw, mrd);
81      }
82
83      lp_setup_bind_framebuffer( lp->setup, &lp->framebuffer );
84
85      lp->dirty |= LP_NEW_FRAMEBUFFER;
86   }
87}
88