sp_clear.c revision 4a49301e 
1/**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 * Copyright 2009 VMware, Inc.  All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29/* Author:
30 *    Brian Paul
31 *    Michel Dänzer
32 */
33
34
35#include "pipe/p_defines.h"
36#include "util/u_pack_color.h"
37#include "sp_clear.h"
38#include "sp_context.h"
39#include "sp_tile_cache.h"
40
41
42/**
43 * Clear the given buffers to the specified values.
44 * No masking, no scissor (clear entire buffer).
45 */
46void
47softpipe_clear(struct pipe_context *pipe, unsigned buffers, const float *rgba,
48               double depth, unsigned stencil)
49{
50   struct softpipe_context *softpipe = softpipe_context(pipe);
51   unsigned cv;
52   uint i;
53
54   if (softpipe->no_rast)
55      return;
56
57#if 0
58   softpipe_update_derived(softpipe); /* not needed?? */
59#endif
60
61   if (buffers & PIPE_CLEAR_COLOR) {
62      for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
63         struct pipe_surface *ps = softpipe->framebuffer.cbufs[i];
64
65         util_pack_color(rgba, ps->format, &cv);
66         sp_tile_cache_clear(softpipe->cbuf_cache[i], rgba, cv);
67
68#if !TILE_CLEAR_OPTIMIZATION
69         /* non-cached surface */
70         pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, cv);
71#endif
72      }
73   }
74
75   if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {
76      static const float zero[4] = { 0.0F, 0.0F, 0.0F, 0.0F };
77      struct pipe_surface *ps = softpipe->framebuffer.zsbuf;
78
79      cv = util_pack_z_stencil(ps->format, depth, stencil);
80      sp_tile_cache_clear(softpipe->zsbuf_cache, zero, cv);
81
82#if !TILE_CLEAR_OPTIMIZATION
83      /* non-cached surface */
84      pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, cv);
85#endif
86   }
87
88   softpipe->dirty_render_cache = TRUE;
89}
90