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
27 #include "util/u_format.h"
28 #include "util/u_inlines.h"
29 #include "util/u_prim.h"
30 #include "util/u_prim_restart.h"
31 #include "util/u_time.h"
32 #include "util/u_upload_mgr.h"
33 #include "indices/u_indices.h"
34
35 #include "svga_hw_reg.h"
36 #include "svga_cmd.h"
37 #include "svga_context.h"
38 #include "svga_screen.h"
39 #include "svga_draw.h"
40 #include "svga_shader.h"
41 #include "svga_state.h"
42 #include "svga_surface.h"
43 #include "svga_swtnl.h"
44 #include "svga_debug.h"
45 #include "svga_resource_buffer.h"
46
47 static enum pipe_error
retry_draw_range_elements(struct svga_context * svga,struct pipe_resource * index_buffer,unsigned index_size,int index_bias,unsigned min_index,unsigned max_index,enum pipe_prim_type prim,unsigned start,unsigned count,unsigned start_instance,unsigned instance_count,boolean do_retry)48 retry_draw_range_elements( struct svga_context *svga,
49 struct pipe_resource *index_buffer,
50 unsigned index_size,
51 int index_bias,
52 unsigned min_index,
53 unsigned max_index,
54 enum pipe_prim_type prim,
55 unsigned start,
56 unsigned count,
57 unsigned start_instance,
58 unsigned instance_count,
59 boolean do_retry )
60 {
61 enum pipe_error ret = PIPE_OK;
62
63 SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_DRAWELEMENTS);
64
65 svga_hwtnl_set_fillmode(svga->hwtnl, svga->curr.rast->hw_fillmode);
66
67 ret = svga_update_state( svga, SVGA_STATE_HW_DRAW );
68 if (ret != PIPE_OK)
69 goto retry;
70
71 /** determine if flatshade is to be used after svga_update_state()
72 * in case the fragment shader is changed.
73 */
74 svga_hwtnl_set_flatshade(svga->hwtnl,
75 svga->curr.rast->templ.flatshade ||
76 svga->state.hw_draw.fs->uses_flat_interp,
77 svga->curr.rast->templ.flatshade_first);
78
79 ret = svga_hwtnl_draw_range_elements( svga->hwtnl,
80 index_buffer, index_size, index_bias,
81 min_index, max_index,
82 prim, start, count,
83 start_instance, instance_count);
84 if (ret != PIPE_OK)
85 goto retry;
86
87 goto done;
88
89 retry:
90 svga_context_flush( svga, NULL );
91
92 if (do_retry)
93 {
94 ret = retry_draw_range_elements(svga,
95 index_buffer, index_size, index_bias,
96 min_index, max_index,
97 prim, start, count,
98 start_instance, instance_count, FALSE);
99 }
100
101 done:
102 SVGA_STATS_TIME_POP(svga_sws(svga));
103 return ret;
104 }
105
106
107 static enum pipe_error
retry_draw_arrays(struct svga_context * svga,enum pipe_prim_type prim,unsigned start,unsigned count,unsigned start_instance,unsigned instance_count,boolean do_retry)108 retry_draw_arrays( struct svga_context *svga,
109 enum pipe_prim_type prim, unsigned start, unsigned count,
110 unsigned start_instance, unsigned instance_count,
111 boolean do_retry )
112 {
113 enum pipe_error ret;
114
115 SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_DRAWARRAYS);
116
117 svga_hwtnl_set_fillmode(svga->hwtnl, svga->curr.rast->hw_fillmode);
118
119 ret = svga_update_state( svga, SVGA_STATE_HW_DRAW );
120 if (ret != PIPE_OK)
121 goto retry;
122
123 /** determine if flatshade is to be used after svga_update_state()
124 * in case the fragment shader is changed.
125 */
126 svga_hwtnl_set_flatshade(svga->hwtnl,
127 svga->curr.rast->templ.flatshade ||
128 svga->state.hw_draw.fs->uses_flat_interp,
129 svga->curr.rast->templ.flatshade_first);
130
131 ret = svga_hwtnl_draw_arrays(svga->hwtnl, prim, start, count,
132 start_instance, instance_count);
133 if (ret != PIPE_OK)
134 goto retry;
135
136 goto done;
137
138 retry:
139 if (ret == PIPE_ERROR_OUT_OF_MEMORY && do_retry)
140 {
141 svga_context_flush( svga, NULL );
142
143 ret = retry_draw_arrays(svga, prim, start, count,
144 start_instance, instance_count,
145 FALSE);
146 }
147
148 done:
149 SVGA_STATS_TIME_POP(svga_sws(svga));
150 return ret;
151 }
152
153
154 /**
155 * Determine if we need to implement primitive restart with a fallback
156 * path which breaks the original primitive into sub-primitive at the
157 * restart indexes.
158 */
159 static boolean
need_fallback_prim_restart(const struct svga_context * svga,const struct pipe_draw_info * info)160 need_fallback_prim_restart(const struct svga_context *svga,
161 const struct pipe_draw_info *info)
162 {
163 if (info->primitive_restart && info->indexed) {
164 if (!svga_have_vgpu10(svga))
165 return TRUE;
166 else if (!svga->state.sw.need_swtnl) {
167 if (svga->curr.ib.index_size == 1)
168 return TRUE; /* no device support for 1-byte indexes */
169 else if (svga->curr.ib.index_size == 2)
170 return info->restart_index != 0xffff;
171 else
172 return info->restart_index != 0xffffffff;
173 }
174 }
175
176 return FALSE;
177 }
178
179
180 static void
svga_draw_vbo(struct pipe_context * pipe,const struct pipe_draw_info * info)181 svga_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
182 {
183 struct svga_context *svga = svga_context( pipe );
184 unsigned reduced_prim = u_reduced_prim( info->mode );
185 unsigned count = info->count;
186 enum pipe_error ret = 0;
187 boolean needed_swtnl;
188
189 SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_DRAWVBO);
190
191 svga->hud.num_draw_calls++; /* for SVGA_QUERY_NUM_DRAW_CALLS */
192
193 if (u_reduced_prim(info->mode) == PIPE_PRIM_TRIANGLES &&
194 svga->curr.rast->templ.cull_face == PIPE_FACE_FRONT_AND_BACK)
195 goto done;
196
197 /*
198 * Mark currently bound target surfaces as dirty
199 * doesn't really matter if it is done before drawing.
200 *
201 * TODO If we ever normaly return something other then
202 * true we should not mark it as dirty then.
203 */
204 svga_mark_surfaces_dirty(svga_context(pipe));
205
206 if (svga->curr.reduced_prim != reduced_prim) {
207 svga->curr.reduced_prim = reduced_prim;
208 svga->dirty |= SVGA_NEW_REDUCED_PRIMITIVE;
209 }
210
211 if (need_fallback_prim_restart(svga, info)) {
212 enum pipe_error r;
213 r = util_draw_vbo_without_prim_restart(pipe, &svga->curr.ib, info);
214 assert(r == PIPE_OK);
215 (void) r;
216 goto done;
217 }
218
219 if (!u_trim_pipe_prim( info->mode, &count ))
220 goto done;
221
222 needed_swtnl = svga->state.sw.need_swtnl;
223
224 svga_update_state_retry( svga, SVGA_STATE_NEED_SWTNL );
225
226 if (svga->state.sw.need_swtnl) {
227 svga->hud.num_fallbacks++; /* for SVGA_QUERY_NUM_FALLBACKS */
228 if (!needed_swtnl) {
229 /*
230 * We're switching from HW to SW TNL. SW TNL will require mapping all
231 * currently bound vertex buffers, some of which may already be
232 * referenced in the current command buffer as result of previous HW
233 * TNL. So flush now, to prevent the context to flush while a referred
234 * vertex buffer is mapped.
235 */
236
237 svga_context_flush(svga, NULL);
238 }
239
240 /* Avoid leaking the previous hwtnl bias to swtnl */
241 svga_hwtnl_set_index_bias( svga->hwtnl, 0 );
242 ret = svga_swtnl_draw_vbo( svga, info );
243 }
244 else {
245 if (info->indexed && svga->curr.ib.buffer) {
246 unsigned offset;
247
248 assert(svga->curr.ib.offset % svga->curr.ib.index_size == 0);
249 offset = svga->curr.ib.offset / svga->curr.ib.index_size;
250
251 ret = retry_draw_range_elements( svga,
252 svga->curr.ib.buffer,
253 svga->curr.ib.index_size,
254 info->index_bias,
255 info->min_index,
256 info->max_index,
257 info->mode,
258 info->start + offset,
259 count,
260 info->start_instance,
261 info->instance_count,
262 TRUE );
263 }
264 else {
265 ret = retry_draw_arrays(svga, info->mode, info->start, count,
266 info->start_instance, info->instance_count,
267 TRUE);
268 }
269 }
270
271 /* XXX: Silence warnings, do something sensible here? */
272 (void)ret;
273
274 if (SVGA_DEBUG & DEBUG_FLUSH) {
275 svga_hwtnl_flush_retry( svga );
276 svga_context_flush(svga, NULL);
277 }
278
279 done:
280 SVGA_STATS_TIME_POP(svga_sws(svga));
281 ;
282 }
283
284
svga_init_draw_functions(struct svga_context * svga)285 void svga_init_draw_functions( struct svga_context *svga )
286 {
287 svga->pipe.draw_vbo = svga_draw_vbo;
288 }
289