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
28 #include "util/u_inlines.h"
29
30 #include "svga_context.h"
31 #include "svga_surface.h"
32
33
svga_set_scissor_state(struct pipe_context * pipe,const struct pipe_scissor_state * scissor)34 static void svga_set_scissor_state( struct pipe_context *pipe,
35 const struct pipe_scissor_state *scissor )
36 {
37 struct svga_context *svga = svga_context(pipe);
38
39 memcpy( &svga->curr.scissor, scissor, sizeof(*scissor) );
40 svga->dirty |= SVGA_NEW_SCISSOR;
41 }
42
43
svga_set_polygon_stipple(struct pipe_context * pipe,const struct pipe_poly_stipple * stipple)44 static void svga_set_polygon_stipple( struct pipe_context *pipe,
45 const struct pipe_poly_stipple *stipple )
46 {
47 /* overridden by the draw module */
48 }
49
50
svga_cleanup_framebuffer(struct svga_context * svga)51 void svga_cleanup_framebuffer(struct svga_context *svga)
52 {
53 struct pipe_framebuffer_state *curr = &svga->curr.framebuffer;
54 struct pipe_framebuffer_state *hw = &svga->state.hw_clear.framebuffer;
55 int i;
56
57 for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
58 pipe_surface_reference(&curr->cbufs[i], NULL);
59 pipe_surface_reference(&hw->cbufs[i], NULL);
60 }
61
62 pipe_surface_reference(&curr->zsbuf, NULL);
63 pipe_surface_reference(&hw->zsbuf, NULL);
64 }
65
66
67 #define DEPTH_BIAS_SCALE_FACTOR_D16 ((float)(1<<15))
68 #define DEPTH_BIAS_SCALE_FACTOR_D24S8 ((float)(1<<23))
69 #define DEPTH_BIAS_SCALE_FACTOR_D32 ((float)(1<<31))
70
71
svga_set_framebuffer_state(struct pipe_context * pipe,const struct pipe_framebuffer_state * fb)72 static void svga_set_framebuffer_state(struct pipe_context *pipe,
73 const struct pipe_framebuffer_state *fb)
74 {
75 struct svga_context *svga = svga_context(pipe);
76 struct pipe_framebuffer_state *dst = &svga->curr.framebuffer;
77 boolean propagate = FALSE;
78 int i;
79
80 dst->width = fb->width;
81 dst->height = fb->height;
82 dst->nr_cbufs = fb->nr_cbufs;
83
84 /* check if we need to propagate any of the target surfaces */
85 for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
86 if (dst->cbufs[i] && dst->cbufs[i] != fb->cbufs[i])
87 if (svga_surface_needs_propagation(dst->cbufs[i]))
88 propagate = TRUE;
89 }
90
91 if (propagate) {
92 /* make sure that drawing calls comes before propagation calls */
93 svga_hwtnl_flush_retry( svga );
94
95 for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
96 if (dst->cbufs[i] && dst->cbufs[i] != fb->cbufs[i])
97 svga_propagate_surface(svga, dst->cbufs[i]);
98 }
99
100 /* XXX: Actually the virtual hardware may support rendertargets with
101 * different size, depending on the host API and driver, but since we cannot
102 * know that make no such assumption here. */
103 for(i = 0; i < fb->nr_cbufs; ++i) {
104 if (fb->zsbuf && fb->cbufs[i]) {
105 assert(fb->zsbuf->width == fb->cbufs[i]->width);
106 assert(fb->zsbuf->height == fb->cbufs[i]->height);
107 }
108 }
109
110 for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
111 pipe_surface_reference(&dst->cbufs[i],
112 (i < fb->nr_cbufs) ? fb->cbufs[i] : NULL);
113 }
114 pipe_surface_reference(&dst->zsbuf, fb->zsbuf);
115
116
117 if (svga->curr.framebuffer.zsbuf)
118 {
119 switch (svga->curr.framebuffer.zsbuf->format) {
120 case PIPE_FORMAT_Z16_UNORM:
121 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D16;
122 break;
123 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
124 case PIPE_FORMAT_Z24X8_UNORM:
125 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
126 case PIPE_FORMAT_X8Z24_UNORM:
127 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D24S8;
128 break;
129 case PIPE_FORMAT_Z32_UNORM:
130 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D32;
131 break;
132 case PIPE_FORMAT_Z32_FLOAT:
133 svga->curr.depthscale = 1.0f / ((float)(1<<23));
134 break;
135 default:
136 svga->curr.depthscale = 0.0f;
137 break;
138 }
139 }
140 else {
141 svga->curr.depthscale = 0.0f;
142 }
143
144 svga->dirty |= SVGA_NEW_FRAME_BUFFER;
145 }
146
147
148
svga_set_clip_state(struct pipe_context * pipe,const struct pipe_clip_state * clip)149 static void svga_set_clip_state( struct pipe_context *pipe,
150 const struct pipe_clip_state *clip )
151 {
152 struct svga_context *svga = svga_context(pipe);
153
154 svga->curr.clip = *clip; /* struct copy */
155
156 svga->dirty |= SVGA_NEW_CLIP;
157 }
158
159
160
161 /* Called when driver state tracker notices changes to the viewport
162 * matrix:
163 */
svga_set_viewport_state(struct pipe_context * pipe,const struct pipe_viewport_state * viewport)164 static void svga_set_viewport_state( struct pipe_context *pipe,
165 const struct pipe_viewport_state *viewport )
166 {
167 struct svga_context *svga = svga_context(pipe);
168
169 svga->curr.viewport = *viewport; /* struct copy */
170
171 svga->dirty |= SVGA_NEW_VIEWPORT;
172 }
173
174
175
svga_init_misc_functions(struct svga_context * svga)176 void svga_init_misc_functions( struct svga_context *svga )
177 {
178 svga->pipe.set_scissor_state = svga_set_scissor_state;
179 svga->pipe.set_polygon_stipple = svga_set_polygon_stipple;
180 svga->pipe.set_framebuffer_state = svga_set_framebuffer_state;
181 svga->pipe.set_clip_state = svga_set_clip_state;
182 svga->pipe.set_viewport_state = svga_set_viewport_state;
183 }
184
185
186