1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 **********************************************************/
25
26 #include "svga_cmd.h"
27 #include "svga_debug.h"
28
29 #include "pipe/p_defines.h"
30 #include "util/u_pack_color.h"
31
32 #include "svga_context.h"
33 #include "svga_state.h"
34 #include "svga_surface.h"
35
36
37 static enum pipe_error
try_clear(struct svga_context * svga,unsigned buffers,const union pipe_color_union * color,double depth,unsigned stencil)38 try_clear(struct svga_context *svga,
39 unsigned buffers,
40 const union pipe_color_union *color,
41 double depth,
42 unsigned stencil)
43 {
44 enum pipe_error ret = PIPE_OK;
45 SVGA3dRect rect = { 0, 0, 0, 0 };
46 boolean restore_viewport = FALSE;
47 SVGA3dClearFlag flags = 0;
48 struct pipe_framebuffer_state *fb = &svga->curr.framebuffer;
49 union util_color uc = {0};
50
51 ret = svga_update_state(svga, SVGA_STATE_HW_CLEAR);
52 if (ret != PIPE_OK)
53 return ret;
54
55 if (svga->rebind.rendertargets) {
56 ret = svga_reemit_framebuffer_bindings(svga);
57 if (ret != PIPE_OK) {
58 return ret;
59 }
60 }
61
62 if ((buffers & PIPE_CLEAR_COLOR) && fb->cbufs[0]) {
63 flags |= SVGA3D_CLEAR_COLOR;
64 util_pack_color(color->f, PIPE_FORMAT_B8G8R8A8_UNORM, &uc);
65
66 rect.w = fb->cbufs[0]->width;
67 rect.h = fb->cbufs[0]->height;
68 }
69
70 if ((buffers & PIPE_CLEAR_DEPTHSTENCIL) && fb->zsbuf) {
71 if (buffers & PIPE_CLEAR_DEPTH)
72 flags |= SVGA3D_CLEAR_DEPTH;
73
74 if ((svga->curr.framebuffer.zsbuf->format == PIPE_FORMAT_S8_UINT_Z24_UNORM) &&
75 (buffers & PIPE_CLEAR_STENCIL))
76 flags |= SVGA3D_CLEAR_STENCIL;
77
78 rect.w = MAX2(rect.w, fb->zsbuf->width);
79 rect.h = MAX2(rect.h, fb->zsbuf->height);
80 }
81
82 if (memcmp(&rect, &svga->state.hw_clear.viewport, sizeof(rect)) != 0) {
83 restore_viewport = TRUE;
84 ret = SVGA3D_SetViewport(svga->swc, &rect);
85 if (ret != PIPE_OK)
86 return ret;
87 }
88
89 ret = SVGA3D_ClearRect(svga->swc, flags, uc.ui, depth, stencil,
90 rect.x, rect.y, rect.w, rect.h);
91 if (ret != PIPE_OK)
92 return ret;
93
94 if (restore_viewport) {
95 memcpy(&rect, &svga->state.hw_clear.viewport, sizeof rect);
96 ret = SVGA3D_SetViewport(svga->swc, &rect);
97 }
98
99 return ret;
100 }
101
102 /**
103 * Clear the given surface to the specified value.
104 * No masking, no scissor (clear entire buffer).
105 */
106 void
svga_clear(struct pipe_context * pipe,unsigned buffers,const union pipe_color_union * color,double depth,unsigned stencil)107 svga_clear(struct pipe_context *pipe, unsigned buffers,
108 const union pipe_color_union *color,
109 double depth, unsigned stencil)
110 {
111 struct svga_context *svga = svga_context( pipe );
112 enum pipe_error ret;
113
114 if (buffers & PIPE_CLEAR_COLOR)
115 SVGA_DBG(DEBUG_DMA, "clear sid %p\n",
116 svga_surface(svga->curr.framebuffer.cbufs[0])->handle);
117
118 /* flush any queued prims (don't want them to appear after the clear!) */
119 svga_hwtnl_flush_retry(svga);
120
121 ret = try_clear( svga, buffers, color, depth, stencil );
122
123 if (ret == PIPE_ERROR_OUT_OF_MEMORY) {
124 /* Flush command buffer and retry:
125 */
126 svga_context_flush( svga, NULL );
127
128 ret = try_clear( svga, buffers, color, depth, stencil );
129 }
130
131 /*
132 * Mark target surfaces as dirty
133 * TODO Mark only cleared surfaces.
134 */
135 svga_mark_surfaces_dirty(svga);
136
137 assert (ret == PIPE_OK);
138 }
139