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_bitmask.h"
27 #include "util/u_debug.h"
28 #include "pipe/p_defines.h"
29 #include "util/u_memory.h"
30 #include "draw/draw_context.h"
31
32 #include "svga_context.h"
33 #include "svga_screen.h"
34 #include "svga_state.h"
35 #include "svga_draw.h"
36 #include "svga_cmd.h"
37 #include "svga_hw_reg.h"
38
39 /* This is just enough to decide whether we need to use the draw
40 * module (swtnl) or not.
41 */
42 static const struct svga_tracked_state *need_swtnl_state[] =
43 {
44 &svga_update_need_swvfetch,
45 &svga_update_need_pipeline,
46 &svga_update_need_swtnl,
47 NULL
48 };
49
50
51 /* Atoms to update hardware state prior to emitting a clear or draw
52 * packet.
53 */
54 static const struct svga_tracked_state *hw_clear_state[] =
55 {
56 &svga_hw_scissor,
57 &svga_hw_viewport,
58 &svga_hw_framebuffer,
59 NULL
60 };
61
62
63 /* Atoms to update hardware state prior to emitting a draw packet.
64 */
65 static const struct svga_tracked_state *hw_draw_state[] =
66 {
67 &svga_need_tgsi_transform,
68 &svga_hw_fs,
69 &svga_hw_gs,
70 &svga_hw_vs,
71 &svga_hw_rss,
72 &svga_hw_sampler, /* VGPU10 */
73 &svga_hw_sampler_bindings, /* VGPU10 */
74 &svga_hw_tss, /* pre-VGPU10 */
75 &svga_hw_tss_binding, /* pre-VGPU10 */
76 &svga_hw_clip_planes,
77 &svga_hw_vdecl,
78 &svga_hw_fs_constants,
79 &svga_hw_gs_constants,
80 &svga_hw_vs_constants,
81 NULL
82 };
83
84
85 static const struct svga_tracked_state *swtnl_draw_state[] =
86 {
87 &svga_update_swtnl_draw,
88 &svga_update_swtnl_vdecl,
89 NULL
90 };
91
92 /* Flattens the graph of state dependencies. Could swap the positions
93 * of hw_clear_state and need_swtnl_state without breaking anything.
94 */
95 static const struct svga_tracked_state **state_levels[] =
96 {
97 need_swtnl_state,
98 hw_clear_state,
99 hw_draw_state,
100 swtnl_draw_state
101 };
102
103
104
check_state(unsigned a,unsigned b)105 static unsigned check_state( unsigned a,
106 unsigned b )
107 {
108 return (a & b);
109 }
110
accumulate_state(unsigned * a,unsigned b)111 static void accumulate_state( unsigned *a,
112 unsigned b )
113 {
114 *a |= b;
115 }
116
117
xor_states(unsigned * result,unsigned a,unsigned b)118 static void xor_states( unsigned *result,
119 unsigned a,
120 unsigned b )
121 {
122 *result = a ^ b;
123 }
124
125
126
127 static enum pipe_error
update_state(struct svga_context * svga,const struct svga_tracked_state * atoms[],unsigned * state)128 update_state(struct svga_context *svga,
129 const struct svga_tracked_state *atoms[],
130 unsigned *state)
131 {
132 #ifdef DEBUG
133 boolean debug = TRUE;
134 #else
135 boolean debug = FALSE;
136 #endif
137 enum pipe_error ret = PIPE_OK;
138 unsigned i;
139
140 ret = svga_hwtnl_flush( svga->hwtnl );
141 if (ret != PIPE_OK)
142 return ret;
143
144 if (debug) {
145 /* Debug version which enforces various sanity checks on the
146 * state flags which are generated and checked to help ensure
147 * state atoms are ordered correctly in the list.
148 */
149 unsigned examined, prev;
150
151 examined = 0;
152 prev = *state;
153
154 for (i = 0; atoms[i] != NULL; i++) {
155 unsigned generated;
156
157 assert(atoms[i]->dirty);
158 assert(atoms[i]->update);
159
160 if (check_state(*state, atoms[i]->dirty)) {
161 if (0)
162 debug_printf("update: %s\n", atoms[i]->name);
163 ret = atoms[i]->update( svga, *state );
164 if (ret != PIPE_OK)
165 return ret;
166 }
167
168 /* generated = (prev ^ state)
169 * if (examined & generated)
170 * fail;
171 */
172 xor_states(&generated, prev, *state);
173 if (check_state(examined, generated)) {
174 debug_printf("state atom %s generated state already examined\n",
175 atoms[i]->name);
176 assert(0);
177 }
178
179 prev = *state;
180 accumulate_state(&examined, atoms[i]->dirty);
181 }
182 }
183 else {
184 for (i = 0; atoms[i] != NULL; i++) {
185 if (check_state(*state, atoms[i]->dirty)) {
186 ret = atoms[i]->update( svga, *state );
187 if (ret != PIPE_OK)
188 return ret;
189 }
190 }
191 }
192
193 return PIPE_OK;
194 }
195
196
197
198 enum pipe_error
svga_update_state(struct svga_context * svga,unsigned max_level)199 svga_update_state(struct svga_context *svga, unsigned max_level)
200 {
201 struct svga_screen *screen = svga_screen(svga->pipe.screen);
202 enum pipe_error ret = PIPE_OK;
203 unsigned i;
204
205 SVGA_STATS_TIME_PUSH(screen->sws, SVGA_STATS_TIME_UPDATESTATE);
206
207 /* Check for updates to bound textures. This can't be done in an
208 * atom as there is no flag which could provoke this test, and we
209 * cannot create one.
210 */
211 if (svga->state.texture_timestamp != screen->texture_timestamp) {
212 svga->state.texture_timestamp = screen->texture_timestamp;
213 svga->dirty |= SVGA_NEW_TEXTURE;
214 }
215
216 for (i = 0; i <= max_level; i++) {
217 svga->dirty |= svga->state.dirty[i];
218
219 if (svga->dirty) {
220 ret = update_state( svga,
221 state_levels[i],
222 &svga->dirty );
223 if (ret != PIPE_OK)
224 goto done;
225
226 svga->state.dirty[i] = 0;
227 }
228 }
229
230 for (; i < SVGA_STATE_MAX; i++)
231 svga->state.dirty[i] |= svga->dirty;
232
233 svga->dirty = 0;
234
235 svga->hud.num_validations++;
236
237 done:
238 SVGA_STATS_TIME_POP(screen->sws);
239 return ret;
240 }
241
242
243
244
svga_update_state_retry(struct svga_context * svga,unsigned max_level)245 void svga_update_state_retry( struct svga_context *svga,
246 unsigned max_level )
247 {
248 enum pipe_error ret;
249
250 ret = svga_update_state( svga, max_level );
251
252 if (ret == PIPE_ERROR_OUT_OF_MEMORY) {
253 svga_context_flush(svga, NULL);
254 ret = svga_update_state( svga, max_level );
255 }
256
257 assert( ret == PIPE_OK );
258 }
259
260
261
262 #define EMIT_RS(_rs, _count, _name, _value) \
263 do { \
264 _rs[_count].state = _name; \
265 _rs[_count].uintValue = _value; \
266 _count++; \
267 } while (0)
268
269
270 /* Setup any hardware state which will be constant through the life of
271 * a context.
272 */
svga_emit_initial_state(struct svga_context * svga)273 enum pipe_error svga_emit_initial_state( struct svga_context *svga )
274 {
275 if (svga_have_vgpu10(svga)) {
276 SVGA3dRasterizerStateId id = util_bitmask_add(svga->rast_object_id_bm);
277 enum pipe_error ret;
278
279 /* XXX preliminary code */
280 ret = SVGA3D_vgpu10_DefineRasterizerState(svga->swc,
281 id,
282 SVGA3D_FILLMODE_FILL,
283 SVGA3D_CULL_NONE,
284 1, /* frontCounterClockwise */
285 0, /* depthBias */
286 0.0f, /* depthBiasClamp */
287 0.0f, /* slopeScaledDepthBiasClamp */
288 0, /* depthClampEnable */
289 0, /* scissorEnable */
290 0, /* multisampleEnable */
291 0, /* aalineEnable */
292 1.0f, /* lineWidth */
293 0, /* lineStippleEnable */
294 0, /* lineStippleFactor */
295 0, /* lineStipplePattern */
296 0); /* provokingVertexLast */
297
298
299 assert(ret == PIPE_OK);
300
301 ret = SVGA3D_vgpu10_SetRasterizerState(svga->swc, id);
302 return ret;
303 }
304 else {
305 SVGA3dRenderState *rs;
306 unsigned count = 0;
307 const unsigned COUNT = 2;
308 enum pipe_error ret;
309
310 ret = SVGA3D_BeginSetRenderState( svga->swc, &rs, COUNT );
311 if (ret != PIPE_OK)
312 return ret;
313
314 /* Always use D3D style coordinate space as this is the only one
315 * which is implemented on all backends.
316 */
317 EMIT_RS(rs, count, SVGA3D_RS_COORDINATETYPE,
318 SVGA3D_COORDINATE_LEFTHANDED );
319 EMIT_RS(rs, count, SVGA3D_RS_FRONTWINDING, SVGA3D_FRONTWINDING_CW );
320
321 assert( COUNT == count );
322 SVGA_FIFOCommitAll( svga->swc );
323
324 return PIPE_OK;
325 }
326 }
327