sp_clear.c revision 9f464c52 
1/**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
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 VMWARE 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 "util/u_surface.h"
38#include "sp_clear.h"
39#include "sp_context.h"
40#include "sp_query.h"
41#include "sp_tile_cache.h"
42
43
44/**
45 * Clear the given buffers to the specified values.
46 * No masking, no scissor (clear entire buffer).
47 */
48void
49softpipe_clear(struct pipe_context *pipe, unsigned buffers,
50               const union pipe_color_union *color,
51               double depth, unsigned stencil)
52{
53   struct softpipe_context *softpipe = softpipe_context(pipe);
54   struct pipe_surface *zsbuf = softpipe->framebuffer.zsbuf;
55   unsigned zs_buffers = buffers & PIPE_CLEAR_DEPTHSTENCIL;
56   uint64_t cv;
57   uint i;
58
59   if (softpipe->no_rast)
60      return;
61
62   if (!softpipe_check_render_cond(softpipe))
63      return;
64
65#if 0
66   softpipe_update_derived(softpipe, PIPE_PRIM_TRIANGLES); /* not needed?? */
67#endif
68
69   if (buffers & PIPE_CLEAR_COLOR) {
70      for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
71         if (buffers & (PIPE_CLEAR_COLOR0 << i))
72            sp_tile_cache_clear(softpipe->cbuf_cache[i], color, 0);
73      }
74   }
75
76   if (zs_buffers &&
77       util_format_is_depth_and_stencil(zsbuf->texture->format) &&
78       zs_buffers != PIPE_CLEAR_DEPTHSTENCIL) {
79      /* Clearing only depth or stencil in a combined depth-stencil buffer. */
80      util_clear_depth_stencil(pipe, zsbuf, zs_buffers, depth, stencil,
81                               0, 0, zsbuf->width, zsbuf->height);
82   }
83   else if (zs_buffers) {
84      static const union pipe_color_union zero;
85
86      cv = util_pack64_z_stencil(zsbuf->format, depth, stencil);
87      sp_tile_cache_clear(softpipe->zsbuf_cache, &zero, cv);
88   }
89
90   softpipe->dirty_render_cache = TRUE;
91}
92