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 struct svga_context *svga = svga_context(pipe);
44
45 memcpy(&svga->curr.scissor, scissors, sizeof(*scissors));
46 svga->dirty |= SVGA_NEW_SCISSOR;
47 }
48
49
50 static void
svga_set_polygon_stipple(struct pipe_context * pipe,const struct pipe_poly_stipple * stipple)51 svga_set_polygon_stipple(struct pipe_context *pipe,
52 const struct pipe_poly_stipple *stipple)
53 {
54 struct svga_context *svga = svga_context(pipe);
55
56 /* release old texture */
57 pipe_resource_reference(&svga->polygon_stipple.texture, NULL);
58
59 /* release old sampler view */
60 if (svga->polygon_stipple.sampler_view) {
61 pipe->sampler_view_destroy(pipe,
62 &svga->polygon_stipple.sampler_view->base);
63 }
64
65 /* create new stipple texture */
66 svga->polygon_stipple.texture =
67 util_pstipple_create_stipple_texture(pipe, stipple->stipple);
68
69 /* create new sampler view */
70 svga->polygon_stipple.sampler_view =
71 (struct svga_pipe_sampler_view *)
72 util_pstipple_create_sampler_view(pipe,
73 svga->polygon_stipple.texture);
74
75 /* allocate sampler state, if first time */
76 if (!svga->polygon_stipple.sampler) {
77 svga->polygon_stipple.sampler = util_pstipple_create_sampler(pipe);
78 }
79
80 svga->dirty |= SVGA_NEW_STIPPLE;
81 }
82
83
84 void
svga_cleanup_framebuffer(struct svga_context * svga)85 svga_cleanup_framebuffer(struct svga_context *svga)
86 {
87 struct svga_screen *svgascreen = svga_screen(svga->pipe.screen);
88 struct pipe_framebuffer_state *curr = &svga->curr.framebuffer;
89 struct pipe_framebuffer_state *hw = &svga->state.hw_clear.framebuffer;
90 unsigned i;
91
92 for (i = 0; i < svgascreen->max_color_buffers; i++) {
93 pipe_surface_reference(&curr->cbufs[i], NULL);
94 pipe_surface_reference(&hw->cbufs[i], NULL);
95 }
96
97 pipe_surface_reference(&curr->zsbuf, NULL);
98 pipe_surface_reference(&hw->zsbuf, NULL);
99 }
100
101
102 #define DEPTH_BIAS_SCALE_FACTOR_D16 ((float)(1<<15))
103 #define DEPTH_BIAS_SCALE_FACTOR_D24S8 ((float)(1<<23))
104 #define DEPTH_BIAS_SCALE_FACTOR_D32 ((float)(1<<31))
105
106
107 static void
svga_set_framebuffer_state(struct pipe_context * pipe,const struct pipe_framebuffer_state * fb)108 svga_set_framebuffer_state(struct pipe_context *pipe,
109 const struct pipe_framebuffer_state *fb)
110 {
111 struct svga_context *svga = svga_context(pipe);
112 struct pipe_framebuffer_state *dst = &svga->curr.framebuffer;
113 unsigned i;
114
115 /* make sure any pending drawing calls are flushed before changing
116 * the framebuffer state
117 */
118 svga_hwtnl_flush_retry(svga);
119
120 dst->width = fb->width;
121 dst->height = fb->height;
122 dst->nr_cbufs = fb->nr_cbufs;
123
124 /* Check if we need to propagate any of the render targets which we may
125 * be unbinding.
126 */
127 for (i = 0; i < dst->nr_cbufs; i++) {
128 struct pipe_surface *s = i < fb->nr_cbufs ? fb->cbufs[i] : NULL;
129 if (dst->cbufs[i] && dst->cbufs[i] != s) {
130 if (svga_surface_needs_propagation(dst->cbufs[i])) {
131 svga_propagate_surface(svga, dst->cbufs[i]);
132 }
133 }
134 }
135
136 /* Check that all surfaces are the same size.
137 * Actually, the virtual hardware may support rendertargets with
138 * different size, depending on the host API and driver,
139 */
140 {
141 int width = 0, height = 0;
142 if (fb->zsbuf) {
143 width = fb->zsbuf->width;
144 height = fb->zsbuf->height;
145 }
146 for (i = 0; i < fb->nr_cbufs; ++i) {
147 if (fb->cbufs[i]) {
148 if (width && height) {
149 if (fb->cbufs[i]->width != width ||
150 fb->cbufs[i]->height != height) {
151 debug_warning("Mixed-size color and depth/stencil surfaces "
152 "may not work properly");
153 }
154 }
155 else {
156 width = fb->cbufs[i]->width;
157 height = fb->cbufs[i]->height;
158 }
159 }
160 }
161 }
162
163 util_copy_framebuffer_state(dst, fb);
164
165 /* Set the rendered-to flags */
166 for (i = 0; i < dst->nr_cbufs; i++) {
167 struct pipe_surface *s = dst->cbufs[i];
168 if (s) {
169 struct svga_texture *t = svga_texture(s->texture);
170 svga_set_texture_rendered_to(t, s->u.tex.first_layer, s->u.tex.level);
171 }
172 }
173
174 if (svga->curr.framebuffer.zsbuf) {
175 switch (svga->curr.framebuffer.zsbuf->format) {
176 case PIPE_FORMAT_Z16_UNORM:
177 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D16;
178 break;
179 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
180 case PIPE_FORMAT_Z24X8_UNORM:
181 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
182 case PIPE_FORMAT_X8Z24_UNORM:
183 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D24S8;
184 break;
185 case PIPE_FORMAT_Z32_UNORM:
186 svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D32;
187 break;
188 case PIPE_FORMAT_Z32_FLOAT:
189 svga->curr.depthscale = 1.0f / ((float)(1<<23));
190 break;
191 default:
192 svga->curr.depthscale = 0.0f;
193 break;
194 }
195
196 /* Set rendered-to flag */
197 {
198 struct pipe_surface *s = dst->zsbuf;
199 struct svga_texture *t = svga_texture(s->texture);
200 svga_set_texture_rendered_to(t, s->u.tex.first_layer, s->u.tex.level);
201 }
202 }
203 else {
204 svga->curr.depthscale = 0.0f;
205 }
206
207 svga->dirty |= SVGA_NEW_FRAME_BUFFER;
208 }
209
210
211 static void
svga_set_clip_state(struct pipe_context * pipe,const struct pipe_clip_state * clip)212 svga_set_clip_state(struct pipe_context *pipe,
213 const struct pipe_clip_state *clip)
214 {
215 struct svga_context *svga = svga_context(pipe);
216
217 svga->curr.clip = *clip; /* struct copy */
218
219 svga->dirty |= SVGA_NEW_CLIP;
220 }
221
222
223 static void
svga_set_viewport_states(struct pipe_context * pipe,unsigned start_slot,unsigned num_viewports,const struct pipe_viewport_state * viewports)224 svga_set_viewport_states(struct pipe_context *pipe,
225 unsigned start_slot,
226 unsigned num_viewports,
227 const struct pipe_viewport_state *viewports)
228 {
229 struct svga_context *svga = svga_context(pipe);
230
231 svga->curr.viewport = *viewports; /* struct copy */
232
233 svga->dirty |= SVGA_NEW_VIEWPORT;
234 }
235
236
237 /**
238 * Called by state tracker to specify a callback function the driver
239 * can use to report info back to the state tracker.
240 */
241 static void
svga_set_debug_callback(struct pipe_context * pipe,const struct pipe_debug_callback * cb)242 svga_set_debug_callback(struct pipe_context *pipe,
243 const struct pipe_debug_callback *cb)
244 {
245 struct svga_context *svga = svga_context(pipe);
246
247 if (cb) {
248 svga->debug.callback = *cb;
249 svga->swc->debug_callback = &svga->debug.callback;
250 } else {
251 memset(&svga->debug.callback, 0, sizeof(svga->debug.callback));
252 svga->swc->debug_callback = NULL;
253 }
254 }
255
256
257 void
svga_init_misc_functions(struct svga_context * svga)258 svga_init_misc_functions(struct svga_context *svga)
259 {
260 svga->pipe.set_scissor_states = svga_set_scissor_states;
261 svga->pipe.set_polygon_stipple = svga_set_polygon_stipple;
262 svga->pipe.set_framebuffer_state = svga_set_framebuffer_state;
263 svga->pipe.set_clip_state = svga_set_clip_state;
264 svga->pipe.set_viewport_states = svga_set_viewport_states;
265 svga->pipe.set_debug_callback = svga_set_debug_callback;
266 }
267