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_screen.h"
41 #include "sp_query.h"
42 #include "sp_tile_cache.h"
43
44
45 /**
46 * Clear the given buffers to the specified values.
47 * No masking, no scissor (clear entire buffer).
48 */
49 void
softpipe_clear(struct pipe_context * pipe,unsigned buffers,const struct pipe_scissor_state * scissor_state,const union pipe_color_union * color,double depth,unsigned stencil)50 softpipe_clear(struct pipe_context *pipe, unsigned buffers,
51 const struct pipe_scissor_state *scissor_state,
52 const union pipe_color_union *color,
53 double depth, unsigned stencil)
54 {
55 struct softpipe_context *softpipe = softpipe_context(pipe);
56 struct pipe_surface *zsbuf = softpipe->framebuffer.zsbuf;
57 unsigned zs_buffers = buffers & PIPE_CLEAR_DEPTHSTENCIL;
58 uint64_t cv;
59 uint i;
60
61 if (unlikely(sp_debug & SP_DBG_NO_RAST))
62 return;
63
64 if (!softpipe_check_render_cond(softpipe))
65 return;
66
67 #if 0
68 softpipe_update_derived(softpipe, PIPE_PRIM_TRIANGLES); /* not needed?? */
69 #endif
70
71 if (buffers & PIPE_CLEAR_COLOR) {
72 for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
73 if (buffers & (PIPE_CLEAR_COLOR0 << i))
74 sp_tile_cache_clear(softpipe->cbuf_cache[i], color, 0);
75 }
76 }
77
78 if (zs_buffers &&
79 util_format_is_depth_and_stencil(zsbuf->texture->format) &&
80 zs_buffers != PIPE_CLEAR_DEPTHSTENCIL) {
81 /* Clearing only depth or stencil in a combined depth-stencil buffer. */
82 util_clear_depth_stencil(pipe, zsbuf, zs_buffers, depth, stencil,
83 0, 0, zsbuf->width, zsbuf->height);
84 }
85 else if (zs_buffers) {
86 static const union pipe_color_union zero;
87
88 cv = util_pack64_z_stencil(zsbuf->format, depth, stencil);
89 sp_tile_cache_clear(softpipe->zsbuf_cache, &zero, cv);
90 }
91
92 softpipe->dirty_render_cache = TRUE;
93 }
94