1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 /*
29 * Authors:
30 * Keith Whitwell <keithw@vmware.com>
31 * Brian Paul
32 */
33
34 #include "util/u_math.h"
35 #include "util/u_memory.h"
36
37 #include "pipe/p_shader_tokens.h"
38 #include "pipe/p_context.h"
39 #include "pipe/p_screen.h"
40
41 #include "draw_private.h"
42 #include "draw_context.h"
43 #include "draw_vs.h"
44
45 #include "translate/translate.h"
46 #include "translate/translate_cache.h"
47
48 #include "tgsi/tgsi_dump.h"
49 #include "tgsi/tgsi_exec.h"
50
51 #include "nir/nir_to_tgsi.h"
52
53 DEBUG_GET_ONCE_BOOL_OPTION(gallium_dump_vs, "GALLIUM_DUMP_VS", FALSE)
54
55
56 struct draw_vertex_shader *
draw_create_vertex_shader(struct draw_context * draw,const struct pipe_shader_state * shader)57 draw_create_vertex_shader(struct draw_context *draw,
58 const struct pipe_shader_state *shader)
59 {
60 struct draw_vertex_shader *vs = NULL;
61 struct pipe_shader_state state = *shader;
62
63 if (draw->dump_vs) {
64 tgsi_dump(shader->tokens, 0);
65 }
66
67 #ifdef DRAW_LLVM_AVAILABLE
68 if (draw->pt.middle.llvm) {
69 struct pipe_screen *screen = draw->pipe->screen;
70 if (shader->type == PIPE_SHADER_IR_NIR &&
71 ((!screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
72 PIPE_SHADER_CAP_INTEGERS)) ||
73 (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
74 PIPE_SHADER_CAP_PREFERRED_IR) ==
75 PIPE_SHADER_IR_TGSI))) {
76 state.type = PIPE_SHADER_IR_TGSI;
77 state.tokens = nir_to_tgsi(shader->ir.nir, screen);
78 }
79 vs = draw_create_vs_llvm(draw, &state);
80 }
81 #endif
82
83 if (!vs) {
84 vs = draw_create_vs_exec( draw, &state );
85 }
86
87 if (vs)
88 {
89 uint i;
90 bool found_clipvertex = FALSE;
91 vs->position_output = -1;
92 for (i = 0; i < vs->info.num_outputs; i++) {
93 if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_POSITION &&
94 vs->info.output_semantic_index[i] == 0)
95 vs->position_output = i;
96 else if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_EDGEFLAG &&
97 vs->info.output_semantic_index[i] == 0)
98 vs->edgeflag_output = i;
99 else if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_CLIPVERTEX &&
100 vs->info.output_semantic_index[i] == 0) {
101 found_clipvertex = TRUE;
102 vs->clipvertex_output = i;
103 } else if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_VIEWPORT_INDEX)
104 vs->viewport_index_output = i;
105 else if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_CLIPDIST) {
106 assert(vs->info.output_semantic_index[i] <
107 PIPE_MAX_CLIP_OR_CULL_DISTANCE_ELEMENT_COUNT);
108 vs->ccdistance_output[vs->info.output_semantic_index[i]] = i;
109 }
110 }
111 if (!found_clipvertex)
112 vs->clipvertex_output = vs->position_output;
113 }
114
115 assert(vs);
116 return vs;
117 }
118
119
120 void
draw_bind_vertex_shader(struct draw_context * draw,struct draw_vertex_shader * dvs)121 draw_bind_vertex_shader(struct draw_context *draw,
122 struct draw_vertex_shader *dvs)
123 {
124 draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
125
126 if (dvs)
127 {
128 draw->vs.vertex_shader = dvs;
129 draw->vs.num_vs_outputs = dvs->info.num_outputs;
130 draw->vs.position_output = dvs->position_output;
131 draw->vs.edgeflag_output = dvs->edgeflag_output;
132 draw->vs.clipvertex_output = dvs->clipvertex_output;
133 draw->vs.ccdistance_output[0] = dvs->ccdistance_output[0];
134 draw->vs.ccdistance_output[1] = dvs->ccdistance_output[1];
135 dvs->prepare( dvs, draw );
136 draw_update_clip_flags(draw);
137 draw_update_viewport_flags(draw);
138 }
139 else {
140 draw->vs.vertex_shader = NULL;
141 draw->vs.num_vs_outputs = 0;
142 }
143 }
144
145
146 void
draw_delete_vertex_shader(struct draw_context * draw,struct draw_vertex_shader * dvs)147 draw_delete_vertex_shader(struct draw_context *draw,
148 struct draw_vertex_shader *dvs)
149 {
150 unsigned i;
151
152 for (i = 0; i < dvs->nr_variants; i++)
153 dvs->variant[i]->destroy( dvs->variant[i] );
154
155 dvs->nr_variants = 0;
156
157 dvs->delete( dvs );
158 }
159
160
161
162 boolean
draw_vs_init(struct draw_context * draw)163 draw_vs_init( struct draw_context *draw )
164 {
165 draw->dump_vs = debug_get_option_gallium_dump_vs();
166
167 if (!draw->llvm) {
168 draw->vs.tgsi.machine = tgsi_exec_machine_create(PIPE_SHADER_VERTEX);
169 if (!draw->vs.tgsi.machine)
170 return FALSE;
171 }
172
173 draw->vs.emit_cache = translate_cache_create();
174 if (!draw->vs.emit_cache)
175 return FALSE;
176
177 draw->vs.fetch_cache = translate_cache_create();
178 if (!draw->vs.fetch_cache)
179 return FALSE;
180
181 return TRUE;
182 }
183
184 void
draw_vs_destroy(struct draw_context * draw)185 draw_vs_destroy( struct draw_context *draw )
186 {
187 if (draw->vs.fetch_cache)
188 translate_cache_destroy(draw->vs.fetch_cache);
189
190 if (draw->vs.emit_cache)
191 translate_cache_destroy(draw->vs.emit_cache);
192
193 if (!draw->llvm)
194 tgsi_exec_machine_destroy(draw->vs.tgsi.machine);
195 }
196
197
198 struct draw_vs_variant *
draw_vs_lookup_variant(struct draw_vertex_shader * vs,const struct draw_vs_variant_key * key)199 draw_vs_lookup_variant( struct draw_vertex_shader *vs,
200 const struct draw_vs_variant_key *key )
201 {
202 struct draw_vs_variant *variant;
203 unsigned i;
204
205 /* Lookup existing variant:
206 */
207 for (i = 0; i < vs->nr_variants; i++)
208 if (draw_vs_variant_key_compare(key, &vs->variant[i]->key) == 0)
209 return vs->variant[i];
210
211 /* Else have to create a new one:
212 */
213 variant = vs->create_variant( vs, key );
214 if (!variant)
215 return NULL;
216
217 /* Add it to our list, could be smarter:
218 */
219 if (vs->nr_variants < ARRAY_SIZE(vs->variant)) {
220 vs->variant[vs->nr_variants++] = variant;
221 }
222 else {
223 vs->last_variant++;
224 vs->last_variant %= ARRAY_SIZE(vs->variant);
225 vs->variant[vs->last_variant]->destroy(vs->variant[vs->last_variant]);
226 vs->variant[vs->last_variant] = variant;
227 }
228
229 /* Done
230 */
231 return variant;
232 }
233
234
235 struct translate *
draw_vs_get_fetch(struct draw_context * draw,struct translate_key * key)236 draw_vs_get_fetch( struct draw_context *draw,
237 struct translate_key *key )
238 {
239 if (!draw->vs.fetch ||
240 translate_key_compare(&draw->vs.fetch->key, key) != 0)
241 {
242 translate_key_sanitize(key);
243 draw->vs.fetch = translate_cache_find(draw->vs.fetch_cache, key);
244 }
245
246 return draw->vs.fetch;
247 }
248
249 struct translate *
draw_vs_get_emit(struct draw_context * draw,struct translate_key * key)250 draw_vs_get_emit( struct draw_context *draw,
251 struct translate_key *key )
252 {
253 if (!draw->vs.emit ||
254 translate_key_compare(&draw->vs.emit->key, key) != 0)
255 {
256 translate_key_sanitize(key);
257 draw->vs.emit = translate_cache_find(draw->vs.emit_cache, key);
258 }
259
260 return draw->vs.emit;
261 }
262
263 void
draw_vs_attach_so(struct draw_vertex_shader * dvs,const struct pipe_stream_output_info * info)264 draw_vs_attach_so(struct draw_vertex_shader *dvs,
265 const struct pipe_stream_output_info *info)
266 {
267 dvs->state.stream_output = *info;
268 }
269
270 void
draw_vs_reset_so(struct draw_vertex_shader * dvs)271 draw_vs_reset_so(struct draw_vertex_shader *dvs)
272 {
273 memset(&dvs->state.stream_output, 0, sizeof(dvs->state.stream_output));
274 }
275