1 /**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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 <keith@tungstengraphics.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
39 #include "draw_private.h"
40 #include "draw_context.h"
41 #include "draw_vs.h"
42
43 #include "translate/translate.h"
44 #include "translate/translate_cache.h"
45
46 #include "tgsi/tgsi_dump.h"
47 #include "tgsi/tgsi_exec.h"
48
49 DEBUG_GET_ONCE_BOOL_OPTION(gallium_dump_vs, "GALLIUM_DUMP_VS", FALSE)
50
51
52 /**
53 * Set a vertex shader constant buffer.
54 * \param slot which constant buffer in [0, PIPE_MAX_CONSTANT_BUFFERS-1]
55 * \param constants the mapped buffer
56 * \param size size of buffer in bytes
57 */
58 void
draw_vs_set_constants(struct draw_context * draw,unsigned slot,const void * constants,unsigned size)59 draw_vs_set_constants(struct draw_context *draw,
60 unsigned slot,
61 const void *constants,
62 unsigned size)
63 {
64 const int alignment = 16;
65
66 /* check if buffer is 16-byte aligned */
67 if (((uintptr_t)constants) & (alignment - 1)) {
68 /* if not, copy the constants into a new, 16-byte aligned buffer */
69 if (size > draw->vs.const_storage_size[slot]) {
70 if (draw->vs.aligned_constant_storage[slot]) {
71 align_free((void *)draw->vs.aligned_constant_storage[slot]);
72 draw->vs.const_storage_size[slot] = 0;
73 }
74 draw->vs.aligned_constant_storage[slot] =
75 align_malloc(size, alignment);
76 if (draw->vs.aligned_constant_storage[slot]) {
77 draw->vs.const_storage_size[slot] = size;
78 }
79 }
80 assert(constants);
81 if (draw->vs.aligned_constant_storage[slot]) {
82 memcpy((void *)draw->vs.aligned_constant_storage[slot],
83 constants,
84 size);
85 }
86 constants = draw->vs.aligned_constant_storage[slot];
87 }
88
89 draw->vs.aligned_constants[slot] = constants;
90 }
91
92
draw_vs_set_viewport(struct draw_context * draw,const struct pipe_viewport_state * viewport)93 void draw_vs_set_viewport( struct draw_context *draw,
94 const struct pipe_viewport_state *viewport )
95 {
96 }
97
98
99
100 struct draw_vertex_shader *
draw_create_vertex_shader(struct draw_context * draw,const struct pipe_shader_state * shader)101 draw_create_vertex_shader(struct draw_context *draw,
102 const struct pipe_shader_state *shader)
103 {
104 struct draw_vertex_shader *vs = NULL;
105
106 if (draw->dump_vs) {
107 tgsi_dump(shader->tokens, 0);
108 }
109
110 #if HAVE_LLVM
111 if (draw->pt.middle.llvm) {
112 vs = draw_create_vs_llvm(draw, shader);
113 }
114 #endif
115
116 if (!vs) {
117 vs = draw_create_vs_exec( draw, shader );
118 }
119
120 if (vs)
121 {
122 uint i;
123 bool found_clipvertex = FALSE;
124 for (i = 0; i < vs->info.num_outputs; i++) {
125 if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_POSITION &&
126 vs->info.output_semantic_index[i] == 0)
127 vs->position_output = i;
128 else if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_EDGEFLAG &&
129 vs->info.output_semantic_index[i] == 0)
130 vs->edgeflag_output = i;
131 else if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_CLIPVERTEX &&
132 vs->info.output_semantic_index[i] == 0) {
133 found_clipvertex = TRUE;
134 vs->clipvertex_output = i;
135 } else if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_CLIPDIST) {
136 if (vs->info.output_semantic_index[i] == 0)
137 vs->clipdistance_output[0] = i;
138 else
139 vs->clipdistance_output[1] = i;
140 }
141 }
142 if (!found_clipvertex)
143 vs->clipvertex_output = vs->position_output;
144 }
145
146 assert(vs);
147 return vs;
148 }
149
150
151 void
draw_bind_vertex_shader(struct draw_context * draw,struct draw_vertex_shader * dvs)152 draw_bind_vertex_shader(struct draw_context *draw,
153 struct draw_vertex_shader *dvs)
154 {
155 draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
156
157 if (dvs)
158 {
159 draw->vs.vertex_shader = dvs;
160 draw->vs.num_vs_outputs = dvs->info.num_outputs;
161 draw->vs.position_output = dvs->position_output;
162 draw->vs.edgeflag_output = dvs->edgeflag_output;
163 draw->vs.clipvertex_output = dvs->clipvertex_output;
164 draw->vs.clipdistance_output[0] = dvs->clipdistance_output[0];
165 draw->vs.clipdistance_output[1] = dvs->clipdistance_output[1];
166 dvs->prepare( dvs, draw );
167 }
168 else {
169 draw->vs.vertex_shader = NULL;
170 draw->vs.num_vs_outputs = 0;
171 }
172 }
173
174
175 void
draw_delete_vertex_shader(struct draw_context * draw,struct draw_vertex_shader * dvs)176 draw_delete_vertex_shader(struct draw_context *draw,
177 struct draw_vertex_shader *dvs)
178 {
179 unsigned i;
180
181 for (i = 0; i < dvs->nr_variants; i++)
182 dvs->variant[i]->destroy( dvs->variant[i] );
183
184 dvs->nr_variants = 0;
185
186 dvs->delete( dvs );
187 }
188
189
190
191 boolean
draw_vs_init(struct draw_context * draw)192 draw_vs_init( struct draw_context *draw )
193 {
194 draw->dump_vs = debug_get_option_gallium_dump_vs();
195
196 draw->vs.tgsi.machine = tgsi_exec_machine_create();
197 if (!draw->vs.tgsi.machine)
198 return FALSE;
199
200 draw->vs.emit_cache = translate_cache_create();
201 if (!draw->vs.emit_cache)
202 return FALSE;
203
204 draw->vs.fetch_cache = translate_cache_create();
205 if (!draw->vs.fetch_cache)
206 return FALSE;
207
208 return TRUE;
209 }
210
211 void
draw_vs_destroy(struct draw_context * draw)212 draw_vs_destroy( struct draw_context *draw )
213 {
214 uint i;
215
216 if (draw->vs.fetch_cache)
217 translate_cache_destroy(draw->vs.fetch_cache);
218
219 if (draw->vs.emit_cache)
220 translate_cache_destroy(draw->vs.emit_cache);
221
222 for (i = 0; i < PIPE_MAX_CONSTANT_BUFFERS; i++) {
223 if (draw->vs.aligned_constant_storage[i]) {
224 align_free((void *)draw->vs.aligned_constant_storage[i]);
225 }
226 }
227
228 tgsi_exec_machine_destroy(draw->vs.tgsi.machine);
229 }
230
231
232 struct draw_vs_variant *
draw_vs_lookup_variant(struct draw_vertex_shader * vs,const struct draw_vs_variant_key * key)233 draw_vs_lookup_variant( struct draw_vertex_shader *vs,
234 const struct draw_vs_variant_key *key )
235 {
236 struct draw_vs_variant *variant;
237 unsigned i;
238
239 /* Lookup existing variant:
240 */
241 for (i = 0; i < vs->nr_variants; i++)
242 if (draw_vs_variant_key_compare(key, &vs->variant[i]->key) == 0)
243 return vs->variant[i];
244
245 /* Else have to create a new one:
246 */
247 variant = vs->create_variant( vs, key );
248 if (variant == NULL)
249 return NULL;
250
251 /* Add it to our list, could be smarter:
252 */
253 if (vs->nr_variants < Elements(vs->variant)) {
254 vs->variant[vs->nr_variants++] = variant;
255 }
256 else {
257 vs->last_variant++;
258 vs->last_variant %= Elements(vs->variant);
259 vs->variant[vs->last_variant]->destroy(vs->variant[vs->last_variant]);
260 vs->variant[vs->last_variant] = variant;
261 }
262
263 /* Done
264 */
265 return variant;
266 }
267
268
269 struct translate *
draw_vs_get_fetch(struct draw_context * draw,struct translate_key * key)270 draw_vs_get_fetch( struct draw_context *draw,
271 struct translate_key *key )
272 {
273 if (!draw->vs.fetch ||
274 translate_key_compare(&draw->vs.fetch->key, key) != 0)
275 {
276 translate_key_sanitize(key);
277 draw->vs.fetch = translate_cache_find(draw->vs.fetch_cache, key);
278 }
279
280 return draw->vs.fetch;
281 }
282
283 struct translate *
draw_vs_get_emit(struct draw_context * draw,struct translate_key * key)284 draw_vs_get_emit( struct draw_context *draw,
285 struct translate_key *key )
286 {
287 if (!draw->vs.emit ||
288 translate_key_compare(&draw->vs.emit->key, key) != 0)
289 {
290 translate_key_sanitize(key);
291 draw->vs.emit = translate_cache_find(draw->vs.emit_cache, key);
292 }
293
294 return draw->vs.emit;
295 }
296