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 */
48 void
softpipe_clear(struct pipe_context * pipe,unsigned buffers,const union pipe_color_union * color,double depth,unsigned stencil)49 softpipe_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 sp_tile_cache_clear(softpipe->cbuf_cache[i], color, 0);
72 }
73 }
74
75 if (zs_buffers &&
76 util_format_is_depth_and_stencil(zsbuf->texture->format) &&
77 zs_buffers != PIPE_CLEAR_DEPTHSTENCIL) {
78 /* Clearing only depth or stencil in a combined depth-stencil buffer. */
79 util_clear_depth_stencil(pipe, zsbuf, zs_buffers, depth, stencil,
80 0, 0, zsbuf->width, zsbuf->height);
81 }
82 else if (zs_buffers) {
83 static const union pipe_color_union zero;
84
85 cv = util_pack64_z_stencil(zsbuf->format, depth, stencil);
86 sp_tile_cache_clear(softpipe->zsbuf_cache, &zero, cv);
87 }
88
89 softpipe->dirty_render_cache = TRUE;
90 }
91