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
105 static unsigned
check_state(unsigned a,unsigned b)106 check_state(unsigned a, unsigned b)
107 {
108 return (a & b);
109 }
110
111 static void
accumulate_state(unsigned * a,unsigned b)112 accumulate_state(unsigned *a, unsigned b)
113 {
114 *a |= b;
115 }
116
117
118 static void
xor_states(unsigned * result,unsigned a,unsigned b)119 xor_states(unsigned *result, unsigned a, unsigned b)
120 {
121 *result = a ^ b;
122 }
123
124
125 static enum pipe_error
update_state(struct svga_context * svga,const struct svga_tracked_state * atoms[],unsigned * state)126 update_state(struct svga_context *svga,
127 const struct svga_tracked_state *atoms[],
128 unsigned *state)
129 {
130 #ifdef DEBUG
131 boolean debug = TRUE;
132 #else
133 boolean debug = FALSE;
134 #endif
135 enum pipe_error ret = PIPE_OK;
136 unsigned i;
137
138 ret = svga_hwtnl_flush( svga->hwtnl );
139 if (ret != PIPE_OK)
140 return ret;
141
142 if (debug) {
143 /* Debug version which enforces various sanity checks on the
144 * state flags which are generated and checked to help ensure
145 * state atoms are ordered correctly in the list.
146 */
147 unsigned examined, prev;
148
149 examined = 0;
150 prev = *state;
151
152 for (i = 0; atoms[i] != NULL; i++) {
153 unsigned generated;
154
155 assert(atoms[i]->dirty);
156 assert(atoms[i]->update);
157
158 if (check_state(*state, atoms[i]->dirty)) {
159 if (0)
160 debug_printf("update: %s\n", atoms[i]->name);
161 ret = atoms[i]->update( svga, *state );
162 if (ret != PIPE_OK)
163 return ret;
164 }
165
166 /* generated = (prev ^ state)
167 * if (examined & generated)
168 * fail;
169 */
170 xor_states(&generated, prev, *state);
171 if (check_state(examined, generated)) {
172 debug_printf("state atom %s generated state already examined\n",
173 atoms[i]->name);
174 assert(0);
175 }
176
177 prev = *state;
178 accumulate_state(&examined, atoms[i]->dirty);
179 }
180 }
181 else {
182 for (i = 0; atoms[i] != NULL; i++) {
183 if (check_state(*state, atoms[i]->dirty)) {
184 ret = atoms[i]->update( svga, *state );
185 if (ret != PIPE_OK)
186 return ret;
187 }
188 }
189 }
190
191 return PIPE_OK;
192 }
193
194
195 enum pipe_error
svga_update_state(struct svga_context * svga,unsigned max_level)196 svga_update_state(struct svga_context *svga, unsigned max_level)
197 {
198 struct svga_screen *screen = svga_screen(svga->pipe.screen);
199 enum pipe_error ret = PIPE_OK;
200 unsigned i;
201
202 SVGA_STATS_TIME_PUSH(screen->sws, SVGA_STATS_TIME_UPDATESTATE);
203
204 /* Check for updates to bound textures. This can't be done in an
205 * atom as there is no flag which could provoke this test, and we
206 * cannot create one.
207 */
208 if (svga->state.texture_timestamp != screen->texture_timestamp) {
209 svga->state.texture_timestamp = screen->texture_timestamp;
210 svga->dirty |= SVGA_NEW_TEXTURE;
211 }
212
213 for (i = 0; i <= max_level; i++) {
214 svga->dirty |= svga->state.dirty[i];
215
216 if (svga->dirty) {
217 ret = update_state( svga,
218 state_levels[i],
219 &svga->dirty );
220 if (ret != PIPE_OK)
221 goto done;
222
223 svga->state.dirty[i] = 0;
224 }
225 }
226
227 for (; i < SVGA_STATE_MAX; i++)
228 svga->state.dirty[i] |= svga->dirty;
229
230 svga->dirty = 0;
231
232 svga->hud.num_validations++;
233
234 done:
235 SVGA_STATS_TIME_POP(screen->sws);
236 return ret;
237 }
238
239
240 void
svga_update_state_retry(struct svga_context * svga,unsigned max_level)241 svga_update_state_retry(struct svga_context *svga, unsigned max_level)
242 {
243 enum pipe_error ret;
244
245 ret = svga_update_state( svga, max_level );
246
247 if (ret == PIPE_ERROR_OUT_OF_MEMORY) {
248 svga_context_flush(svga, NULL);
249 ret = svga_update_state( svga, max_level );
250 }
251
252 assert( ret == PIPE_OK );
253 }
254
255
256
257 #define EMIT_RS(_rs, _count, _name, _value) \
258 do { \
259 _rs[_count].state = _name; \
260 _rs[_count].uintValue = _value; \
261 _count++; \
262 } while (0)
263
264
265 /* Setup any hardware state which will be constant through the life of
266 * a context.
267 */
268 enum pipe_error
svga_emit_initial_state(struct svga_context * svga)269 svga_emit_initial_state(struct svga_context *svga)
270 {
271 if (svga_have_vgpu10(svga)) {
272 SVGA3dRasterizerStateId id = util_bitmask_add(svga->rast_object_id_bm);
273 enum pipe_error ret;
274
275 /* XXX preliminary code */
276 ret = SVGA3D_vgpu10_DefineRasterizerState(svga->swc,
277 id,
278 SVGA3D_FILLMODE_FILL,
279 SVGA3D_CULL_NONE,
280 1, /* frontCounterClockwise */
281 0, /* depthBias */
282 0.0f, /* depthBiasClamp */
283 0.0f, /* slopeScaledDepthBiasClamp */
284 0, /* depthClampEnable */
285 0, /* scissorEnable */
286 0, /* multisampleEnable */
287 0, /* aalineEnable */
288 1.0f, /* lineWidth */
289 0, /* lineStippleEnable */
290 0, /* lineStippleFactor */
291 0, /* lineStipplePattern */
292 0); /* provokingVertexLast */
293
294
295 assert(ret == PIPE_OK);
296
297 ret = SVGA3D_vgpu10_SetRasterizerState(svga->swc, id);
298 return ret;
299 }
300 else {
301 SVGA3dRenderState *rs;
302 unsigned count = 0;
303 const unsigned COUNT = 2;
304 enum pipe_error ret;
305
306 ret = SVGA3D_BeginSetRenderState( svga->swc, &rs, COUNT );
307 if (ret != PIPE_OK)
308 return ret;
309
310 /* Always use D3D style coordinate space as this is the only one
311 * which is implemented on all backends.
312 */
313 EMIT_RS(rs, count, SVGA3D_RS_COORDINATETYPE,
314 SVGA3D_COORDINATE_LEFTHANDED );
315 EMIT_RS(rs, count, SVGA3D_RS_FRONTWINDING, SVGA3D_FRONTWINDING_CW );
316
317 assert( COUNT == count );
318 SVGA_FIFOCommitAll( svga->swc );
319
320 return PIPE_OK;
321 }
322 }
323