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 "util/u_framebuffer.h"
27 #include "util/u_inlines.h"
28 #include "util/u_pstipple.h"
29
30 #include "svga_cmd.h"
31 #include "svga_context.h"
32 #include "svga_screen.h"
33 #include "svga_surface.h"
34 #include "svga_resource_texture.h"
35
36
37 static void
svga_set_scissor_states(struct pipe_context * pipe,unsigned start_slot,unsigned num_scissors,const struct pipe_scissor_state * scissors)38 svga_set_scissor_states(struct pipe_context *pipe,
39 unsigned start_slot,
40 unsigned num_scissors,
41 const struct pipe_scissor_state *scissors)
42 {
43 ASSERTED struct svga_screen *svgascreen = svga_screen(pipe->screen);
44 struct svga_context *svga = svga_context(pipe);
45 unsigned i, num_sc;
46
47 assert(start_slot + num_scissors <= svgascreen->max_viewports);
48
49 for (i = 0, num_sc = start_slot; i < num_scissors; i++) {
50 svga->curr.scissor[num_sc++] = scissors[i]; /* struct copy */
51 }
52
53 svga->dirty |= SVGA_NEW_SCISSOR;
54 }
55
56
57 static void
svga_set_polygon_stipple(struct pipe_context * pipe,const struct pipe_poly_stipple * stipple)58 svga_set_polygon_stipple(struct pipe_context *pipe,
59 const struct pipe_poly_stipple *stipple)
60 {
61 struct svga_context *svga = svga_context(pipe);
62
63 /* release old texture */
64 pipe_resource_reference(&svga->polygon_stipple.texture, NULL);
65
66 /* release old sampler view */
67 if (svga->polygon_stipple.sampler_view) {
68 pipe->sampler_view_destroy(pipe,
69 &svga->polygon_stipple.sampler_view->base);
70 }
71
72 /* create new stipple texture */
73 svga->polygon_stipple.texture =
74 util_pstipple_create_stipple_texture(pipe, stipple->stipple);
75
76 /* create new sampler view */
77 svga->polygon_stipple.sampler_view =
78 (struct svga_pipe_sampler_view *)
79 util_pstipple_create_sampler_view(pipe,
80 svga->polygon_stipple.texture);
81
82 /* allocate sampler state, if first time */
83 if (!svga->polygon_stipple.sampler) {
84 svga->polygon_stipple.sampler = util_pstipple_create_sampler(pipe);
85 }
86
87 svga->dirty |= SVGA_NEW_STIPPLE;
88 }
89
90
91 void
svga_cleanup_framebuffer(struct svga_context * svga)92 svga_cleanup_framebuffer(struct svga_context *svga)
93 {
94 struct svga_screen *svgascreen = svga_screen(svga->pipe.screen);
95 struct pipe_framebuffer_state *curr = &svga->curr.framebuffer;
96 struct pipe_framebuffer_state *hw = &svga->state.hw_clear.framebuffer;
97 unsigned i;
98
99 for (i = 0; i < svgascreen->max_color_buffers; i++) {
100 pipe_surface_reference(&curr->cbufs[i], NULL);
101 pipe_surface_reference(&hw->cbufs[i], NULL);
102 }
103
104 pipe_surface_reference(&curr->zsbuf, NULL);
105 pipe_surface_reference(&hw->zsbuf, NULL);
106 }
107
108
109 #define DEPTH_BIAS_SCALE_FACTOR_D16 ((float)(1<<15))
110 #define DEPTH_BIAS_SCALE_FACTOR_D24S8 ((float)(1<<23))
111 #define DEPTH_BIAS_SCALE_FACTOR_D32 ((float)(1<<31))
112
113
114 static void
svga_set_framebuffer_state(struct pipe_context * pipe,const struct pipe_framebuffer_state * fb)115 svga_set_framebuffer_state(struct pipe_context *pipe,
116 const struct pipe_framebuffer_state *fb)
117 {
118 struct svga_context *svga = svga_context(pipe);
119 struct pipe_framebuffer_state *dst = &svga->curr.framebuffer;
120 unsigned i;
121
122 /* make sure any pending drawing calls are flushed before changing
123 * the framebuffer state
124 */
125 svga_hwtnl_flush_retry(svga);
126
127 dst->width = fb->width;
128 dst->height = fb->height;
129 dst->nr_cbufs = fb->nr_cbufs;
130
131 /* Check that all surfaces are the same size.
132 * Actually, the virtual hardware may support rendertargets with
133 * different size, depending on the host API and driver,
134 */
135 {
136 int width = 0, height = 0;
137 if (fb->zsbuf) {
138 width = fb->zsbuf->width;
139 height = fb->zsbuf->height;
140 }
141 for (i = 0; i < fb->nr_cbufs; ++i) {
142 if (fb->cbufs[i]) {
143 if (width && height) {
144 if (fb->cbufs[i]->width != width ||
145 fb->cbufs[i]->height != height) {
146 debug_warning("Mixed-size color and depth/stencil surfaces "
147 "may not work properly");
148 }
149 }
150 else {
151 width = fb->cbufs[i]->width;
152 height = fb->cbufs[i]->height;
153 }
154 }
155 }
156 }
157
158 util_copy_framebuffer_state(dst, fb);
159
160 if (svga->curr.framebuffer.zsbuf) {
161 switch (svga->curr.framebuffer.zsbuf->format) {
162 case PIPE_FORMAT_Z16_UNORM:
163 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D16;
164 break;
165 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
166 case PIPE_FORMAT_Z24X8_UNORM:
167 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
168 case PIPE_FORMAT_X8Z24_UNORM:
169 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D24S8;
170 break;
171 case PIPE_FORMAT_Z32_UNORM:
172 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D32;
173 break;
174 case PIPE_FORMAT_Z32_FLOAT:
175 svga->curr.depthscale = 1.0f / ((float)(1<<23));
176 break;
177 default:
178 svga->curr.depthscale = 0.0f;
179 break;
180 }
181 }
182 else {
183 svga->curr.depthscale = 0.0f;
184 }
185
186 svga->dirty |= SVGA_NEW_FRAME_BUFFER;
187 }
188
189
190 static void
svga_set_clip_state(struct pipe_context * pipe,const struct pipe_clip_state * clip)191 svga_set_clip_state(struct pipe_context *pipe,
192 const struct pipe_clip_state *clip)
193 {
194 struct svga_context *svga = svga_context(pipe);
195
196 svga->curr.clip = *clip; /* struct copy */
197
198 svga->dirty |= SVGA_NEW_CLIP;
199 }
200
201
202 static void
svga_set_viewport_states(struct pipe_context * pipe,unsigned start_slot,unsigned num_viewports,const struct pipe_viewport_state * viewports)203 svga_set_viewport_states(struct pipe_context *pipe,
204 unsigned start_slot,
205 unsigned num_viewports,
206 const struct pipe_viewport_state *viewports)
207 {
208 struct svga_context *svga = svga_context(pipe);
209 ASSERTED struct svga_screen *svgascreen = svga_screen(pipe->screen);
210 unsigned i, num_vp;
211
212 assert(start_slot + num_viewports <= svgascreen->max_viewports);
213
214 for (i = 0, num_vp = start_slot; i < num_viewports; i++) {
215 svga->curr.viewport[num_vp++] = viewports[i]; /* struct copy */
216 }
217
218 svga->dirty |= SVGA_NEW_VIEWPORT;
219 }
220
221
222 /**
223 * Called by state tracker to specify a callback function the driver
224 * can use to report info back to the gallium frontend.
225 */
226 static void
svga_set_debug_callback(struct pipe_context * pipe,const struct pipe_debug_callback * cb)227 svga_set_debug_callback(struct pipe_context *pipe,
228 const struct pipe_debug_callback *cb)
229 {
230 struct svga_context *svga = svga_context(pipe);
231
232 if (cb) {
233 svga->debug.callback = *cb;
234 svga->swc->debug_callback = &svga->debug.callback;
235 } else {
236 memset(&svga->debug.callback, 0, sizeof(svga->debug.callback));
237 svga->swc->debug_callback = NULL;
238 }
239 }
240
241
242 void
svga_init_misc_functions(struct svga_context * svga)243 svga_init_misc_functions(struct svga_context *svga)
244 {
245 svga->pipe.set_scissor_states = svga_set_scissor_states;
246 svga->pipe.set_polygon_stipple = svga_set_polygon_stipple;
247 svga->pipe.set_framebuffer_state = svga_set_framebuffer_state;
248 svga->pipe.set_clip_state = svga_set_clip_state;
249 svga->pipe.set_viewport_states = svga_set_viewport_states;
250 svga->pipe.set_debug_callback = svga_set_debug_callback;
251 }
252