1 /**************************************************************************
2 *
3 * Copyright 2011 Marek Olšák <maraeo@gmail.com>
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 AUTHORS 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 #include "util/u_vbuf.h"
29
30 #include "util/u_dump.h"
31 #include "util/u_format.h"
32 #include "util/u_inlines.h"
33 #include "util/u_memory.h"
34 #include "util/u_upload_mgr.h"
35 #include "translate/translate.h"
36 #include "translate/translate_cache.h"
37 #include "cso_cache/cso_cache.h"
38 #include "cso_cache/cso_hash.h"
39
40 struct u_vbuf_elements {
41 unsigned count;
42 struct pipe_vertex_element ve[PIPE_MAX_ATTRIBS];
43
44 unsigned src_format_size[PIPE_MAX_ATTRIBS];
45
46 /* If (velem[i].src_format != native_format[i]), the vertex buffer
47 * referenced by the vertex element cannot be used for rendering and
48 * its vertex data must be translated to native_format[i]. */
49 enum pipe_format native_format[PIPE_MAX_ATTRIBS];
50 unsigned native_format_size[PIPE_MAX_ATTRIBS];
51
52 /* This might mean two things:
53 * - src_format != native_format, as discussed above.
54 * - src_offset % 4 != 0 (if the caps don't allow such an offset). */
55 uint32_t incompatible_elem_mask; /* each bit describes a corresp. attrib */
56 /* Which buffer has at least one vertex element referencing it
57 * incompatible. */
58 uint32_t incompatible_vb_mask_any;
59 /* Which buffer has all vertex elements referencing it incompatible. */
60 uint32_t incompatible_vb_mask_all;
61 /* Which buffer has at least one vertex element referencing it
62 * compatible. */
63 uint32_t compatible_vb_mask_any;
64 /* Which buffer has all vertex elements referencing it compatible. */
65 uint32_t compatible_vb_mask_all;
66
67 /* Which buffer has at least one vertex element referencing it
68 * non-instanced. */
69 uint32_t noninstance_vb_mask_any;
70
71 void *driver_cso;
72 };
73
74 enum {
75 VB_VERTEX = 0,
76 VB_INSTANCE = 1,
77 VB_CONST = 2,
78 VB_NUM = 3
79 };
80
81 struct u_vbuf {
82 struct u_vbuf_caps caps;
83
84 struct pipe_context *pipe;
85 struct translate_cache *translate_cache;
86 struct cso_cache *cso_cache;
87 struct u_upload_mgr *uploader;
88
89 /* This is what was set in set_vertex_buffers.
90 * May contain user buffers. */
91 struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
92 unsigned nr_vertex_buffers;
93
94 /* Saved vertex buffers. */
95 struct pipe_vertex_buffer vertex_buffer_saved[PIPE_MAX_ATTRIBS];
96 unsigned nr_vertex_buffers_saved;
97
98 /* Vertex buffers for the driver.
99 * There are no user buffers. */
100 struct pipe_vertex_buffer real_vertex_buffer[PIPE_MAX_ATTRIBS];
101 int nr_real_vertex_buffers;
102 boolean vertex_buffers_dirty;
103
104 /* The index buffer. */
105 struct pipe_index_buffer index_buffer;
106
107 /* Vertex elements. */
108 struct u_vbuf_elements *ve, *ve_saved;
109
110 /* Vertex elements used for the translate fallback. */
111 struct pipe_vertex_element fallback_velems[PIPE_MAX_ATTRIBS];
112 /* If non-NULL, this is a vertex element state used for the translate
113 * fallback and therefore used for rendering too. */
114 boolean using_translate;
115 /* The vertex buffer slot index where translated vertices have been
116 * stored in. */
117 unsigned fallback_vbs[VB_NUM];
118
119 /* Which buffer is a user buffer. */
120 uint32_t user_vb_mask; /* each bit describes a corresp. buffer */
121 /* Which buffer is incompatible (unaligned). */
122 uint32_t incompatible_vb_mask; /* each bit describes a corresp. buffer */
123 /* Which buffer has a non-zero stride. */
124 uint32_t nonzero_stride_vb_mask; /* each bit describes a corresp. buffer */
125 };
126
127 static void *
128 u_vbuf_create_vertex_elements(struct u_vbuf *mgr, unsigned count,
129 const struct pipe_vertex_element *attribs);
130 static void u_vbuf_delete_vertex_elements(struct u_vbuf *mgr, void *cso);
131
132
u_vbuf_get_caps(struct pipe_screen * screen,struct u_vbuf_caps * caps)133 void u_vbuf_get_caps(struct pipe_screen *screen, struct u_vbuf_caps *caps)
134 {
135 caps->format_fixed32 =
136 screen->is_format_supported(screen, PIPE_FORMAT_R32_FIXED, PIPE_BUFFER,
137 0, PIPE_BIND_VERTEX_BUFFER);
138
139 caps->format_float16 =
140 screen->is_format_supported(screen, PIPE_FORMAT_R16_FLOAT, PIPE_BUFFER,
141 0, PIPE_BIND_VERTEX_BUFFER);
142
143 caps->format_float64 =
144 screen->is_format_supported(screen, PIPE_FORMAT_R64_FLOAT, PIPE_BUFFER,
145 0, PIPE_BIND_VERTEX_BUFFER);
146
147 caps->format_norm32 =
148 screen->is_format_supported(screen, PIPE_FORMAT_R32_UNORM, PIPE_BUFFER,
149 0, PIPE_BIND_VERTEX_BUFFER) &&
150 screen->is_format_supported(screen, PIPE_FORMAT_R32_SNORM, PIPE_BUFFER,
151 0, PIPE_BIND_VERTEX_BUFFER);
152
153 caps->format_scaled32 =
154 screen->is_format_supported(screen, PIPE_FORMAT_R32_USCALED, PIPE_BUFFER,
155 0, PIPE_BIND_VERTEX_BUFFER) &&
156 screen->is_format_supported(screen, PIPE_FORMAT_R32_SSCALED, PIPE_BUFFER,
157 0, PIPE_BIND_VERTEX_BUFFER);
158
159 caps->buffer_offset_unaligned =
160 !screen->get_param(screen,
161 PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY);
162
163 caps->buffer_stride_unaligned =
164 !screen->get_param(screen,
165 PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY);
166
167 caps->velem_src_offset_unaligned =
168 !screen->get_param(screen,
169 PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY);
170
171 caps->user_vertex_buffers =
172 screen->get_param(screen, PIPE_CAP_USER_VERTEX_BUFFERS);
173 }
174
175 struct u_vbuf *
u_vbuf_create(struct pipe_context * pipe,struct u_vbuf_caps * caps)176 u_vbuf_create(struct pipe_context *pipe,
177 struct u_vbuf_caps *caps)
178 {
179 struct u_vbuf *mgr = CALLOC_STRUCT(u_vbuf);
180
181 mgr->caps = *caps;
182 mgr->pipe = pipe;
183 mgr->cso_cache = cso_cache_create();
184 mgr->translate_cache = translate_cache_create();
185 memset(mgr->fallback_vbs, ~0, sizeof(mgr->fallback_vbs));
186
187 mgr->uploader = u_upload_create(pipe, 1024 * 1024, 4,
188 PIPE_BIND_VERTEX_BUFFER);
189
190 return mgr;
191 }
192
193 /* u_vbuf uses its own caching for vertex elements, because it needs to keep
194 * its own preprocessed state per vertex element CSO. */
195 static struct u_vbuf_elements *
u_vbuf_set_vertex_elements_internal(struct u_vbuf * mgr,unsigned count,const struct pipe_vertex_element * states)196 u_vbuf_set_vertex_elements_internal(struct u_vbuf *mgr, unsigned count,
197 const struct pipe_vertex_element *states)
198 {
199 struct pipe_context *pipe = mgr->pipe;
200 unsigned key_size, hash_key;
201 struct cso_hash_iter iter;
202 struct u_vbuf_elements *ve;
203 struct cso_velems_state velems_state;
204
205 /* need to include the count into the stored state data too. */
206 key_size = sizeof(struct pipe_vertex_element) * count + sizeof(unsigned);
207 velems_state.count = count;
208 memcpy(velems_state.velems, states,
209 sizeof(struct pipe_vertex_element) * count);
210 hash_key = cso_construct_key((void*)&velems_state, key_size);
211 iter = cso_find_state_template(mgr->cso_cache, hash_key, CSO_VELEMENTS,
212 (void*)&velems_state, key_size);
213
214 if (cso_hash_iter_is_null(iter)) {
215 struct cso_velements *cso = MALLOC_STRUCT(cso_velements);
216 memcpy(&cso->state, &velems_state, key_size);
217 cso->data = u_vbuf_create_vertex_elements(mgr, count, states);
218 cso->delete_state = (cso_state_callback)u_vbuf_delete_vertex_elements;
219 cso->context = (void*)mgr;
220
221 iter = cso_insert_state(mgr->cso_cache, hash_key, CSO_VELEMENTS, cso);
222 ve = cso->data;
223 } else {
224 ve = ((struct cso_velements *)cso_hash_iter_data(iter))->data;
225 }
226
227 assert(ve);
228
229 if (ve != mgr->ve)
230 pipe->bind_vertex_elements_state(pipe, ve->driver_cso);
231 return ve;
232 }
233
u_vbuf_set_vertex_elements(struct u_vbuf * mgr,unsigned count,const struct pipe_vertex_element * states)234 void u_vbuf_set_vertex_elements(struct u_vbuf *mgr, unsigned count,
235 const struct pipe_vertex_element *states)
236 {
237 mgr->ve = u_vbuf_set_vertex_elements_internal(mgr, count, states);
238 }
239
u_vbuf_destroy(struct u_vbuf * mgr)240 void u_vbuf_destroy(struct u_vbuf *mgr)
241 {
242 unsigned i;
243
244 mgr->pipe->set_vertex_buffers(mgr->pipe, 0, NULL);
245
246 for (i = 0; i < mgr->nr_vertex_buffers; i++) {
247 pipe_resource_reference(&mgr->vertex_buffer[i].buffer, NULL);
248 }
249 for (i = 0; i < mgr->nr_real_vertex_buffers; i++) {
250 pipe_resource_reference(&mgr->real_vertex_buffer[i].buffer, NULL);
251 }
252
253 translate_cache_destroy(mgr->translate_cache);
254 u_upload_destroy(mgr->uploader);
255 cso_cache_delete(mgr->cso_cache);
256 FREE(mgr);
257 }
258
259 static enum pipe_error
u_vbuf_translate_buffers(struct u_vbuf * mgr,struct translate_key * key,unsigned vb_mask,unsigned out_vb,int start_vertex,unsigned num_vertices,int start_index,unsigned num_indices,int min_index,boolean unroll_indices)260 u_vbuf_translate_buffers(struct u_vbuf *mgr, struct translate_key *key,
261 unsigned vb_mask, unsigned out_vb,
262 int start_vertex, unsigned num_vertices,
263 int start_index, unsigned num_indices, int min_index,
264 boolean unroll_indices)
265 {
266 struct translate *tr;
267 struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {0};
268 struct pipe_resource *out_buffer = NULL;
269 uint8_t *out_map;
270 unsigned out_offset, i;
271 enum pipe_error err;
272
273 /* Get a translate object. */
274 tr = translate_cache_find(mgr->translate_cache, key);
275
276 /* Map buffers we want to translate. */
277 for (i = 0; i < mgr->nr_vertex_buffers; i++) {
278 if (vb_mask & (1 << i)) {
279 struct pipe_vertex_buffer *vb = &mgr->vertex_buffer[i];
280 unsigned offset = vb->buffer_offset + vb->stride * start_vertex;
281 uint8_t *map;
282
283 if (vb->user_buffer) {
284 map = (uint8_t*)vb->user_buffer + offset;
285 } else {
286 unsigned size = vb->stride ? num_vertices * vb->stride
287 : sizeof(double)*4;
288
289 if (offset+size > vb->buffer->width0) {
290 size = vb->buffer->width0 - offset;
291 }
292
293 map = pipe_buffer_map_range(mgr->pipe, vb->buffer, offset, size,
294 PIPE_TRANSFER_READ, &vb_transfer[i]);
295 }
296
297 /* Subtract min_index so that indexing with the index buffer works. */
298 if (unroll_indices) {
299 map -= vb->stride * min_index;
300 }
301
302 tr->set_buffer(tr, i, map, vb->stride, ~0);
303 }
304 }
305
306 /* Translate. */
307 if (unroll_indices) {
308 struct pipe_index_buffer *ib = &mgr->index_buffer;
309 struct pipe_transfer *transfer = NULL;
310 unsigned offset = ib->offset + start_index * ib->index_size;
311 uint8_t *map;
312
313 assert((ib->buffer || ib->user_buffer) && ib->index_size);
314
315 /* Create and map the output buffer. */
316 err = u_upload_alloc(mgr->uploader, 0,
317 key->output_stride * num_indices,
318 &out_offset, &out_buffer,
319 (void**)&out_map);
320 if (err != PIPE_OK)
321 return err;
322
323 if (ib->user_buffer) {
324 map = (uint8_t*)ib->user_buffer + offset;
325 } else {
326 map = pipe_buffer_map_range(mgr->pipe, ib->buffer, offset,
327 num_indices * ib->index_size,
328 PIPE_TRANSFER_READ, &transfer);
329 }
330
331 switch (ib->index_size) {
332 case 4:
333 tr->run_elts(tr, (unsigned*)map, num_indices, 0, out_map);
334 break;
335 case 2:
336 tr->run_elts16(tr, (uint16_t*)map, num_indices, 0, out_map);
337 break;
338 case 1:
339 tr->run_elts8(tr, map, num_indices, 0, out_map);
340 break;
341 }
342
343 if (transfer) {
344 pipe_buffer_unmap(mgr->pipe, transfer);
345 }
346 } else {
347 /* Create and map the output buffer. */
348 err = u_upload_alloc(mgr->uploader,
349 key->output_stride * start_vertex,
350 key->output_stride * num_vertices,
351 &out_offset, &out_buffer,
352 (void**)&out_map);
353 if (err != PIPE_OK)
354 return err;
355
356 out_offset -= key->output_stride * start_vertex;
357
358 tr->run(tr, 0, num_vertices, 0, out_map);
359 }
360
361 /* Unmap all buffers. */
362 for (i = 0; i < mgr->nr_vertex_buffers; i++) {
363 if (vb_transfer[i]) {
364 pipe_buffer_unmap(mgr->pipe, vb_transfer[i]);
365 }
366 }
367
368 /* Setup the new vertex buffer. */
369 mgr->real_vertex_buffer[out_vb].buffer_offset = out_offset;
370 mgr->real_vertex_buffer[out_vb].stride = key->output_stride;
371
372 /* Move the buffer reference. */
373 pipe_resource_reference(
374 &mgr->real_vertex_buffer[out_vb].buffer, NULL);
375 mgr->real_vertex_buffer[out_vb].buffer = out_buffer;
376
377 return PIPE_OK;
378 }
379
380 static boolean
u_vbuf_translate_find_free_vb_slots(struct u_vbuf * mgr,unsigned mask[VB_NUM])381 u_vbuf_translate_find_free_vb_slots(struct u_vbuf *mgr,
382 unsigned mask[VB_NUM])
383 {
384 unsigned type;
385 unsigned fallback_vbs[VB_NUM];
386 /* Set the bit for each buffer which is incompatible, or isn't set. */
387 uint32_t unused_vb_mask =
388 mgr->ve->incompatible_vb_mask_all | mgr->incompatible_vb_mask |
389 ~((1 << mgr->nr_vertex_buffers) - 1);
390
391 memset(fallback_vbs, ~0, sizeof(fallback_vbs));
392
393 /* Find free slots for each type if needed. */
394 for (type = 0; type < VB_NUM; type++) {
395 if (mask[type]) {
396 uint32_t index;
397
398 if (!unused_vb_mask) {
399 /* fail, reset the number to its original value */
400 mgr->nr_real_vertex_buffers = mgr->nr_vertex_buffers;
401 return FALSE;
402 }
403
404 index = ffs(unused_vb_mask) - 1;
405 fallback_vbs[type] = index;
406 if (index >= mgr->nr_real_vertex_buffers) {
407 mgr->nr_real_vertex_buffers = index + 1;
408 }
409 /*printf("found slot=%i for type=%i\n", index, type);*/
410 }
411 }
412
413 memcpy(mgr->fallback_vbs, fallback_vbs, sizeof(fallback_vbs));
414 return TRUE;
415 }
416
417 static boolean
u_vbuf_translate_begin(struct u_vbuf * mgr,int start_vertex,unsigned num_vertices,int start_instance,unsigned num_instances,int start_index,unsigned num_indices,int min_index,boolean unroll_indices)418 u_vbuf_translate_begin(struct u_vbuf *mgr,
419 int start_vertex, unsigned num_vertices,
420 int start_instance, unsigned num_instances,
421 int start_index, unsigned num_indices, int min_index,
422 boolean unroll_indices)
423 {
424 unsigned mask[VB_NUM] = {0};
425 struct translate_key key[VB_NUM];
426 unsigned elem_index[VB_NUM][PIPE_MAX_ATTRIBS]; /* ... into key.elements */
427 unsigned i, type;
428
429 int start[VB_NUM] = {
430 start_vertex, /* VERTEX */
431 start_instance, /* INSTANCE */
432 0 /* CONST */
433 };
434
435 unsigned num[VB_NUM] = {
436 num_vertices, /* VERTEX */
437 num_instances, /* INSTANCE */
438 1 /* CONST */
439 };
440
441 memset(key, 0, sizeof(key));
442 memset(elem_index, ~0, sizeof(elem_index));
443
444 /* See if there are vertex attribs of each type to translate and
445 * which ones. */
446 for (i = 0; i < mgr->ve->count; i++) {
447 unsigned vb_index = mgr->ve->ve[i].vertex_buffer_index;
448
449 if (!mgr->vertex_buffer[vb_index].stride) {
450 if (!(mgr->ve->incompatible_elem_mask & (1 << i)) &&
451 !(mgr->incompatible_vb_mask & (1 << vb_index))) {
452 continue;
453 }
454 mask[VB_CONST] |= 1 << vb_index;
455 } else if (mgr->ve->ve[i].instance_divisor) {
456 if (!(mgr->ve->incompatible_elem_mask & (1 << i)) &&
457 !(mgr->incompatible_vb_mask & (1 << vb_index))) {
458 continue;
459 }
460 mask[VB_INSTANCE] |= 1 << vb_index;
461 } else {
462 if (!unroll_indices &&
463 !(mgr->ve->incompatible_elem_mask & (1 << i)) &&
464 !(mgr->incompatible_vb_mask & (1 << vb_index))) {
465 continue;
466 }
467 mask[VB_VERTEX] |= 1 << vb_index;
468 }
469 }
470
471 assert(mask[VB_VERTEX] || mask[VB_INSTANCE] || mask[VB_CONST]);
472
473 /* Find free vertex buffer slots. */
474 if (!u_vbuf_translate_find_free_vb_slots(mgr, mask)) {
475 return FALSE;
476 }
477
478 /* Initialize the translate keys. */
479 for (i = 0; i < mgr->ve->count; i++) {
480 struct translate_key *k;
481 struct translate_element *te;
482 unsigned bit, vb_index = mgr->ve->ve[i].vertex_buffer_index;
483 bit = 1 << vb_index;
484
485 if (!(mgr->ve->incompatible_elem_mask & (1 << i)) &&
486 !(mgr->incompatible_vb_mask & (1 << vb_index)) &&
487 (!unroll_indices || !(mask[VB_VERTEX] & bit))) {
488 continue;
489 }
490
491 /* Set type to what we will translate.
492 * Whether vertex, instance, or constant attribs. */
493 for (type = 0; type < VB_NUM; type++) {
494 if (mask[type] & bit) {
495 break;
496 }
497 }
498 assert(type < VB_NUM);
499 assert(translate_is_output_format_supported(mgr->ve->native_format[i]));
500 /*printf("velem=%i type=%i\n", i, type);*/
501
502 /* Add the vertex element. */
503 k = &key[type];
504 elem_index[type][i] = k->nr_elements;
505
506 te = &k->element[k->nr_elements];
507 te->type = TRANSLATE_ELEMENT_NORMAL;
508 te->instance_divisor = 0;
509 te->input_buffer = vb_index;
510 te->input_format = mgr->ve->ve[i].src_format;
511 te->input_offset = mgr->ve->ve[i].src_offset;
512 te->output_format = mgr->ve->native_format[i];
513 te->output_offset = k->output_stride;
514
515 k->output_stride += mgr->ve->native_format_size[i];
516 k->nr_elements++;
517 }
518
519 /* Translate buffers. */
520 for (type = 0; type < VB_NUM; type++) {
521 if (key[type].nr_elements) {
522 enum pipe_error err;
523 err = u_vbuf_translate_buffers(mgr, &key[type], mask[type],
524 mgr->fallback_vbs[type],
525 start[type], num[type],
526 start_index, num_indices, min_index,
527 unroll_indices && type == VB_VERTEX);
528 if (err != PIPE_OK)
529 return FALSE;
530
531 /* Fixup the stride for constant attribs. */
532 if (type == VB_CONST) {
533 mgr->real_vertex_buffer[mgr->fallback_vbs[VB_CONST]].stride = 0;
534 }
535 }
536 }
537
538 /* Setup new vertex elements. */
539 for (i = 0; i < mgr->ve->count; i++) {
540 for (type = 0; type < VB_NUM; type++) {
541 if (elem_index[type][i] < key[type].nr_elements) {
542 struct translate_element *te = &key[type].element[elem_index[type][i]];
543 mgr->fallback_velems[i].instance_divisor = mgr->ve->ve[i].instance_divisor;
544 mgr->fallback_velems[i].src_format = te->output_format;
545 mgr->fallback_velems[i].src_offset = te->output_offset;
546 mgr->fallback_velems[i].vertex_buffer_index = mgr->fallback_vbs[type];
547
548 /* elem_index[type][i] can only be set for one type. */
549 assert(type > VB_INSTANCE || elem_index[type+1][i] == ~0);
550 assert(type > VB_VERTEX || elem_index[type+2][i] == ~0);
551 break;
552 }
553 }
554 /* No translating, just copy the original vertex element over. */
555 if (type == VB_NUM) {
556 memcpy(&mgr->fallback_velems[i], &mgr->ve->ve[i],
557 sizeof(struct pipe_vertex_element));
558 }
559 }
560
561 u_vbuf_set_vertex_elements_internal(mgr, mgr->ve->count,
562 mgr->fallback_velems);
563 mgr->using_translate = TRUE;
564 return TRUE;
565 }
566
u_vbuf_translate_end(struct u_vbuf * mgr)567 static void u_vbuf_translate_end(struct u_vbuf *mgr)
568 {
569 unsigned i;
570
571 /* Restore vertex elements. */
572 mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->ve->driver_cso);
573 mgr->using_translate = FALSE;
574
575 /* Unreference the now-unused VBOs. */
576 for (i = 0; i < VB_NUM; i++) {
577 unsigned vb = mgr->fallback_vbs[i];
578 if (vb != ~0) {
579 pipe_resource_reference(&mgr->real_vertex_buffer[vb].buffer, NULL);
580 mgr->fallback_vbs[i] = ~0;
581 }
582 }
583 mgr->nr_real_vertex_buffers = mgr->nr_vertex_buffers;
584 }
585
586 #define FORMAT_REPLACE(what, withwhat) \
587 case PIPE_FORMAT_##what: format = PIPE_FORMAT_##withwhat; break
588
589 static void *
u_vbuf_create_vertex_elements(struct u_vbuf * mgr,unsigned count,const struct pipe_vertex_element * attribs)590 u_vbuf_create_vertex_elements(struct u_vbuf *mgr, unsigned count,
591 const struct pipe_vertex_element *attribs)
592 {
593 struct pipe_context *pipe = mgr->pipe;
594 unsigned i;
595 struct pipe_vertex_element driver_attribs[PIPE_MAX_ATTRIBS];
596 struct u_vbuf_elements *ve = CALLOC_STRUCT(u_vbuf_elements);
597 uint32_t used_buffers = 0;
598
599 ve->count = count;
600
601 memcpy(ve->ve, attribs, sizeof(struct pipe_vertex_element) * count);
602 memcpy(driver_attribs, attribs, sizeof(struct pipe_vertex_element) * count);
603
604 /* Set the best native format in case the original format is not
605 * supported. */
606 for (i = 0; i < count; i++) {
607 enum pipe_format format = ve->ve[i].src_format;
608
609 ve->src_format_size[i] = util_format_get_blocksize(format);
610
611 used_buffers |= 1 << ve->ve[i].vertex_buffer_index;
612
613 if (!ve->ve[i].instance_divisor) {
614 ve->noninstance_vb_mask_any |= 1 << ve->ve[i].vertex_buffer_index;
615 }
616
617 /* Choose a native format.
618 * For now we don't care about the alignment, that's going to
619 * be sorted out later. */
620 if (!mgr->caps.format_fixed32) {
621 switch (format) {
622 FORMAT_REPLACE(R32_FIXED, R32_FLOAT);
623 FORMAT_REPLACE(R32G32_FIXED, R32G32_FLOAT);
624 FORMAT_REPLACE(R32G32B32_FIXED, R32G32B32_FLOAT);
625 FORMAT_REPLACE(R32G32B32A32_FIXED, R32G32B32A32_FLOAT);
626 default:;
627 }
628 }
629 if (!mgr->caps.format_float16) {
630 switch (format) {
631 FORMAT_REPLACE(R16_FLOAT, R32_FLOAT);
632 FORMAT_REPLACE(R16G16_FLOAT, R32G32_FLOAT);
633 FORMAT_REPLACE(R16G16B16_FLOAT, R32G32B32_FLOAT);
634 FORMAT_REPLACE(R16G16B16A16_FLOAT, R32G32B32A32_FLOAT);
635 default:;
636 }
637 }
638 if (!mgr->caps.format_float64) {
639 switch (format) {
640 FORMAT_REPLACE(R64_FLOAT, R32_FLOAT);
641 FORMAT_REPLACE(R64G64_FLOAT, R32G32_FLOAT);
642 FORMAT_REPLACE(R64G64B64_FLOAT, R32G32B32_FLOAT);
643 FORMAT_REPLACE(R64G64B64A64_FLOAT, R32G32B32A32_FLOAT);
644 default:;
645 }
646 }
647 if (!mgr->caps.format_norm32) {
648 switch (format) {
649 FORMAT_REPLACE(R32_UNORM, R32_FLOAT);
650 FORMAT_REPLACE(R32G32_UNORM, R32G32_FLOAT);
651 FORMAT_REPLACE(R32G32B32_UNORM, R32G32B32_FLOAT);
652 FORMAT_REPLACE(R32G32B32A32_UNORM, R32G32B32A32_FLOAT);
653 FORMAT_REPLACE(R32_SNORM, R32_FLOAT);
654 FORMAT_REPLACE(R32G32_SNORM, R32G32_FLOAT);
655 FORMAT_REPLACE(R32G32B32_SNORM, R32G32B32_FLOAT);
656 FORMAT_REPLACE(R32G32B32A32_SNORM, R32G32B32A32_FLOAT);
657 default:;
658 }
659 }
660 if (!mgr->caps.format_scaled32) {
661 switch (format) {
662 FORMAT_REPLACE(R32_USCALED, R32_FLOAT);
663 FORMAT_REPLACE(R32G32_USCALED, R32G32_FLOAT);
664 FORMAT_REPLACE(R32G32B32_USCALED, R32G32B32_FLOAT);
665 FORMAT_REPLACE(R32G32B32A32_USCALED,R32G32B32A32_FLOAT);
666 FORMAT_REPLACE(R32_SSCALED, R32_FLOAT);
667 FORMAT_REPLACE(R32G32_SSCALED, R32G32_FLOAT);
668 FORMAT_REPLACE(R32G32B32_SSCALED, R32G32B32_FLOAT);
669 FORMAT_REPLACE(R32G32B32A32_SSCALED,R32G32B32A32_FLOAT);
670 default:;
671 }
672 }
673
674 driver_attribs[i].src_format = format;
675 ve->native_format[i] = format;
676 ve->native_format_size[i] =
677 util_format_get_blocksize(ve->native_format[i]);
678
679 if (ve->ve[i].src_format != format ||
680 (!mgr->caps.velem_src_offset_unaligned &&
681 ve->ve[i].src_offset % 4 != 0)) {
682 ve->incompatible_elem_mask |= 1 << i;
683 ve->incompatible_vb_mask_any |= 1 << ve->ve[i].vertex_buffer_index;
684 } else {
685 ve->compatible_vb_mask_any |= 1 << ve->ve[i].vertex_buffer_index;
686 }
687 }
688
689 ve->compatible_vb_mask_all = ~ve->incompatible_vb_mask_any & used_buffers;
690 ve->incompatible_vb_mask_all = ~ve->compatible_vb_mask_any & used_buffers;
691
692 /* Align the formats to the size of DWORD if needed. */
693 if (!mgr->caps.velem_src_offset_unaligned) {
694 for (i = 0; i < count; i++) {
695 ve->native_format_size[i] = align(ve->native_format_size[i], 4);
696 }
697 }
698
699 ve->driver_cso =
700 pipe->create_vertex_elements_state(pipe, count, driver_attribs);
701 return ve;
702 }
703
u_vbuf_delete_vertex_elements(struct u_vbuf * mgr,void * cso)704 static void u_vbuf_delete_vertex_elements(struct u_vbuf *mgr, void *cso)
705 {
706 struct pipe_context *pipe = mgr->pipe;
707 struct u_vbuf_elements *ve = cso;
708
709 pipe->delete_vertex_elements_state(pipe, ve->driver_cso);
710 FREE(ve);
711 }
712
u_vbuf_set_vertex_buffers(struct u_vbuf * mgr,unsigned count,const struct pipe_vertex_buffer * bufs)713 void u_vbuf_set_vertex_buffers(struct u_vbuf *mgr, unsigned count,
714 const struct pipe_vertex_buffer *bufs)
715 {
716 unsigned i;
717
718 mgr->user_vb_mask = 0;
719 mgr->incompatible_vb_mask = 0;
720 mgr->nonzero_stride_vb_mask = 0;
721
722 for (i = 0; i < count; i++) {
723 const struct pipe_vertex_buffer *vb = &bufs[i];
724 struct pipe_vertex_buffer *orig_vb = &mgr->vertex_buffer[i];
725 struct pipe_vertex_buffer *real_vb = &mgr->real_vertex_buffer[i];
726
727 pipe_resource_reference(&orig_vb->buffer, vb->buffer);
728 orig_vb->user_buffer = vb->user_buffer;
729
730 real_vb->buffer_offset = orig_vb->buffer_offset = vb->buffer_offset;
731 real_vb->stride = orig_vb->stride = vb->stride;
732 real_vb->user_buffer = NULL;
733
734 if (vb->stride) {
735 mgr->nonzero_stride_vb_mask |= 1 << i;
736 }
737
738 if (!vb->buffer && !vb->user_buffer) {
739 pipe_resource_reference(&real_vb->buffer, NULL);
740 continue;
741 }
742
743 if ((!mgr->caps.buffer_offset_unaligned && vb->buffer_offset % 4 != 0) ||
744 (!mgr->caps.buffer_stride_unaligned && vb->stride % 4 != 0)) {
745 mgr->incompatible_vb_mask |= 1 << i;
746 pipe_resource_reference(&real_vb->buffer, NULL);
747 continue;
748 }
749
750 if (!mgr->caps.user_vertex_buffers && vb->user_buffer) {
751 mgr->user_vb_mask |= 1 << i;
752 pipe_resource_reference(&real_vb->buffer, NULL);
753 continue;
754 }
755
756 pipe_resource_reference(&real_vb->buffer, vb->buffer);
757 real_vb->user_buffer = vb->user_buffer;
758 }
759
760 for (i = count; i < mgr->nr_vertex_buffers; i++) {
761 pipe_resource_reference(&mgr->vertex_buffer[i].buffer, NULL);
762 }
763 for (i = count; i < mgr->nr_real_vertex_buffers; i++) {
764 pipe_resource_reference(&mgr->real_vertex_buffer[i].buffer, NULL);
765 }
766
767 mgr->nr_vertex_buffers = count;
768 mgr->nr_real_vertex_buffers = count;
769 mgr->vertex_buffers_dirty = TRUE;
770 }
771
u_vbuf_set_index_buffer(struct u_vbuf * mgr,const struct pipe_index_buffer * ib)772 void u_vbuf_set_index_buffer(struct u_vbuf *mgr,
773 const struct pipe_index_buffer *ib)
774 {
775 struct pipe_context *pipe = mgr->pipe;
776
777 if (ib) {
778 assert(ib->offset % ib->index_size == 0);
779 pipe_resource_reference(&mgr->index_buffer.buffer, ib->buffer);
780 memcpy(&mgr->index_buffer, ib, sizeof(*ib));
781 } else {
782 pipe_resource_reference(&mgr->index_buffer.buffer, NULL);
783 }
784
785 pipe->set_index_buffer(pipe, ib);
786 }
787
788 static enum pipe_error
u_vbuf_upload_buffers(struct u_vbuf * mgr,int start_vertex,unsigned num_vertices,int start_instance,unsigned num_instances)789 u_vbuf_upload_buffers(struct u_vbuf *mgr,
790 int start_vertex, unsigned num_vertices,
791 int start_instance, unsigned num_instances)
792 {
793 unsigned i;
794 unsigned nr_velems = mgr->ve->count;
795 unsigned nr_vbufs = mgr->nr_vertex_buffers;
796 struct pipe_vertex_element *velems =
797 mgr->using_translate ? mgr->fallback_velems : mgr->ve->ve;
798 unsigned start_offset[PIPE_MAX_ATTRIBS];
799 unsigned end_offset[PIPE_MAX_ATTRIBS] = {0};
800
801 /* Determine how much data needs to be uploaded. */
802 for (i = 0; i < nr_velems; i++) {
803 struct pipe_vertex_element *velem = &velems[i];
804 unsigned index = velem->vertex_buffer_index;
805 struct pipe_vertex_buffer *vb = &mgr->vertex_buffer[index];
806 unsigned instance_div, first, size;
807
808 /* Skip the buffers generated by translate. */
809 if (index == mgr->fallback_vbs[VB_VERTEX] ||
810 index == mgr->fallback_vbs[VB_INSTANCE] ||
811 index == mgr->fallback_vbs[VB_CONST]) {
812 continue;
813 }
814
815 if (!vb->user_buffer) {
816 continue;
817 }
818
819 instance_div = velem->instance_divisor;
820 first = vb->buffer_offset + velem->src_offset;
821
822 if (!vb->stride) {
823 /* Constant attrib. */
824 size = mgr->ve->src_format_size[i];
825 } else if (instance_div) {
826 /* Per-instance attrib. */
827 unsigned count = (num_instances + instance_div - 1) / instance_div;
828 first += vb->stride * start_instance;
829 size = vb->stride * (count - 1) + mgr->ve->src_format_size[i];
830 } else {
831 /* Per-vertex attrib. */
832 first += vb->stride * start_vertex;
833 size = vb->stride * (num_vertices - 1) + mgr->ve->src_format_size[i];
834 }
835
836 /* Update offsets. */
837 if (!end_offset[index]) {
838 start_offset[index] = first;
839 end_offset[index] = first + size;
840 } else {
841 if (first < start_offset[index])
842 start_offset[index] = first;
843 if (first + size > end_offset[index])
844 end_offset[index] = first + size;
845 }
846 }
847
848 /* Upload buffers. */
849 for (i = 0; i < nr_vbufs; i++) {
850 unsigned start, end = end_offset[i];
851 struct pipe_vertex_buffer *real_vb;
852 const uint8_t *ptr;
853 enum pipe_error err;
854
855 if (!end) {
856 continue;
857 }
858
859 start = start_offset[i];
860 assert(start < end);
861
862 real_vb = &mgr->real_vertex_buffer[i];
863 ptr = mgr->vertex_buffer[i].user_buffer;
864
865 err = u_upload_data(mgr->uploader, start, end - start, ptr + start,
866 &real_vb->buffer_offset, &real_vb->buffer);
867 if (err != PIPE_OK)
868 return err;
869
870 real_vb->buffer_offset -= start;
871 }
872
873 return PIPE_OK;
874 }
875
u_vbuf_need_minmax_index(struct u_vbuf * mgr)876 static boolean u_vbuf_need_minmax_index(struct u_vbuf *mgr)
877 {
878 /* See if there are any per-vertex attribs which will be uploaded or
879 * translated. Use bitmasks to get the info instead of looping over vertex
880 * elements. */
881 return ((mgr->user_vb_mask | mgr->incompatible_vb_mask |
882 mgr->ve->incompatible_vb_mask_any) &
883 mgr->ve->noninstance_vb_mask_any & mgr->nonzero_stride_vb_mask) != 0;
884 }
885
u_vbuf_mapping_vertex_buffer_blocks(struct u_vbuf * mgr)886 static boolean u_vbuf_mapping_vertex_buffer_blocks(struct u_vbuf *mgr)
887 {
888 /* Return true if there are hw buffers which don't need to be translated.
889 *
890 * We could query whether each buffer is busy, but that would
891 * be way more costly than this. */
892 return (~mgr->user_vb_mask & ~mgr->incompatible_vb_mask &
893 mgr->ve->compatible_vb_mask_all & mgr->ve->noninstance_vb_mask_any &
894 mgr->nonzero_stride_vb_mask) != 0;
895 }
896
u_vbuf_get_minmax_index(struct pipe_context * pipe,struct pipe_index_buffer * ib,const struct pipe_draw_info * info,int * out_min_index,int * out_max_index)897 static void u_vbuf_get_minmax_index(struct pipe_context *pipe,
898 struct pipe_index_buffer *ib,
899 const struct pipe_draw_info *info,
900 int *out_min_index,
901 int *out_max_index)
902 {
903 struct pipe_transfer *transfer = NULL;
904 const void *indices;
905 unsigned i;
906 unsigned restart_index = info->restart_index;
907
908 if (ib->user_buffer) {
909 indices = (uint8_t*)ib->user_buffer +
910 ib->offset + info->start * ib->index_size;
911 } else {
912 indices = pipe_buffer_map_range(pipe, ib->buffer,
913 ib->offset + info->start * ib->index_size,
914 info->count * ib->index_size,
915 PIPE_TRANSFER_READ, &transfer);
916 }
917
918 switch (ib->index_size) {
919 case 4: {
920 const unsigned *ui_indices = (const unsigned*)indices;
921 unsigned max_ui = 0;
922 unsigned min_ui = ~0U;
923 if (info->primitive_restart) {
924 for (i = 0; i < info->count; i++) {
925 if (ui_indices[i] != restart_index) {
926 if (ui_indices[i] > max_ui) max_ui = ui_indices[i];
927 if (ui_indices[i] < min_ui) min_ui = ui_indices[i];
928 }
929 }
930 }
931 else {
932 for (i = 0; i < info->count; i++) {
933 if (ui_indices[i] > max_ui) max_ui = ui_indices[i];
934 if (ui_indices[i] < min_ui) min_ui = ui_indices[i];
935 }
936 }
937 *out_min_index = min_ui;
938 *out_max_index = max_ui;
939 break;
940 }
941 case 2: {
942 const unsigned short *us_indices = (const unsigned short*)indices;
943 unsigned max_us = 0;
944 unsigned min_us = ~0U;
945 if (info->primitive_restart) {
946 for (i = 0; i < info->count; i++) {
947 if (us_indices[i] != restart_index) {
948 if (us_indices[i] > max_us) max_us = us_indices[i];
949 if (us_indices[i] < min_us) min_us = us_indices[i];
950 }
951 }
952 }
953 else {
954 for (i = 0; i < info->count; i++) {
955 if (us_indices[i] > max_us) max_us = us_indices[i];
956 if (us_indices[i] < min_us) min_us = us_indices[i];
957 }
958 }
959 *out_min_index = min_us;
960 *out_max_index = max_us;
961 break;
962 }
963 case 1: {
964 const unsigned char *ub_indices = (const unsigned char*)indices;
965 unsigned max_ub = 0;
966 unsigned min_ub = ~0U;
967 if (info->primitive_restart) {
968 for (i = 0; i < info->count; i++) {
969 if (ub_indices[i] != restart_index) {
970 if (ub_indices[i] > max_ub) max_ub = ub_indices[i];
971 if (ub_indices[i] < min_ub) min_ub = ub_indices[i];
972 }
973 }
974 }
975 else {
976 for (i = 0; i < info->count; i++) {
977 if (ub_indices[i] > max_ub) max_ub = ub_indices[i];
978 if (ub_indices[i] < min_ub) min_ub = ub_indices[i];
979 }
980 }
981 *out_min_index = min_ub;
982 *out_max_index = max_ub;
983 break;
984 }
985 default:
986 assert(0);
987 *out_min_index = 0;
988 *out_max_index = 0;
989 }
990
991 if (transfer) {
992 pipe_buffer_unmap(pipe, transfer);
993 }
994 }
995
u_vbuf_draw_vbo(struct u_vbuf * mgr,const struct pipe_draw_info * info)996 void u_vbuf_draw_vbo(struct u_vbuf *mgr, const struct pipe_draw_info *info)
997 {
998 struct pipe_context *pipe = mgr->pipe;
999 int start_vertex, min_index;
1000 unsigned num_vertices;
1001 boolean unroll_indices = FALSE;
1002 uint32_t user_vb_mask = mgr->user_vb_mask;
1003
1004 /* Normal draw. No fallback and no user buffers. */
1005 if (!mgr->incompatible_vb_mask &&
1006 !mgr->ve->incompatible_elem_mask &&
1007 !user_vb_mask) {
1008 /* Set vertex buffers if needed. */
1009 if (mgr->vertex_buffers_dirty) {
1010 pipe->set_vertex_buffers(pipe, mgr->nr_real_vertex_buffers,
1011 mgr->real_vertex_buffer);
1012 mgr->vertex_buffers_dirty = FALSE;
1013 }
1014
1015 pipe->draw_vbo(pipe, info);
1016 return;
1017 }
1018
1019 if (info->indexed) {
1020 /* See if anything needs to be done for per-vertex attribs. */
1021 if (u_vbuf_need_minmax_index(mgr)) {
1022 int max_index;
1023
1024 if (info->max_index != ~0) {
1025 min_index = info->min_index;
1026 max_index = info->max_index;
1027 } else {
1028 u_vbuf_get_minmax_index(mgr->pipe, &mgr->index_buffer, info,
1029 &min_index, &max_index);
1030 }
1031
1032 assert(min_index <= max_index);
1033
1034 start_vertex = min_index + info->index_bias;
1035 num_vertices = max_index + 1 - min_index;
1036
1037 /* Primitive restart doesn't work when unrolling indices.
1038 * We would have to break this drawing operation into several ones. */
1039 /* Use some heuristic to see if unrolling indices improves
1040 * performance. */
1041 if (!info->primitive_restart &&
1042 num_vertices > info->count*2 &&
1043 num_vertices-info->count > 32 &&
1044 !u_vbuf_mapping_vertex_buffer_blocks(mgr)) {
1045 /*printf("num_vertices=%i count=%i\n", num_vertices, info->count);*/
1046 unroll_indices = TRUE;
1047 user_vb_mask &= ~(mgr->nonzero_stride_vb_mask &
1048 mgr->ve->noninstance_vb_mask_any);
1049 }
1050 } else {
1051 /* Nothing to do for per-vertex attribs. */
1052 start_vertex = 0;
1053 num_vertices = 0;
1054 min_index = 0;
1055 }
1056 } else {
1057 start_vertex = info->start;
1058 num_vertices = info->count;
1059 min_index = 0;
1060 }
1061
1062 /* Translate vertices with non-native layouts or formats. */
1063 if (unroll_indices ||
1064 mgr->incompatible_vb_mask ||
1065 mgr->ve->incompatible_elem_mask) {
1066 if (!u_vbuf_translate_begin(mgr, start_vertex, num_vertices,
1067 info->start_instance, info->instance_count,
1068 info->start, info->count, min_index,
1069 unroll_indices)) {
1070 debug_warn_once("u_vbuf_translate_begin() failed");
1071 return;
1072 }
1073
1074 user_vb_mask &= ~(mgr->incompatible_vb_mask |
1075 mgr->ve->incompatible_vb_mask_all);
1076 }
1077
1078 /* Upload user buffers. */
1079 if (user_vb_mask) {
1080 if (u_vbuf_upload_buffers(mgr, start_vertex, num_vertices,
1081 info->start_instance,
1082 info->instance_count) != PIPE_OK) {
1083 debug_warn_once("u_vbuf_upload_buffers() failed");
1084 return;
1085 }
1086 }
1087
1088 /*
1089 if (unroll_indices) {
1090 printf("unrolling indices: start_vertex = %i, num_vertices = %i\n",
1091 start_vertex, num_vertices);
1092 util_dump_draw_info(stdout, info);
1093 printf("\n");
1094 }
1095
1096 unsigned i;
1097 for (i = 0; i < mgr->nr_vertex_buffers; i++) {
1098 printf("input %i: ", i);
1099 util_dump_vertex_buffer(stdout, mgr->vertex_buffer+i);
1100 printf("\n");
1101 }
1102 for (i = 0; i < mgr->nr_real_vertex_buffers; i++) {
1103 printf("real %i: ", i);
1104 util_dump_vertex_buffer(stdout, mgr->real_vertex_buffer+i);
1105 printf("\n");
1106 }
1107 */
1108
1109 u_upload_unmap(mgr->uploader);
1110 pipe->set_vertex_buffers(pipe, mgr->nr_real_vertex_buffers,
1111 mgr->real_vertex_buffer);
1112
1113 if (unlikely(unroll_indices)) {
1114 struct pipe_draw_info new_info = *info;
1115 new_info.indexed = FALSE;
1116 new_info.index_bias = 0;
1117 new_info.min_index = 0;
1118 new_info.max_index = info->count - 1;
1119 new_info.start = 0;
1120
1121 pipe->draw_vbo(pipe, &new_info);
1122 } else {
1123 pipe->draw_vbo(pipe, info);
1124 }
1125
1126 if (mgr->using_translate) {
1127 u_vbuf_translate_end(mgr);
1128 }
1129 mgr->vertex_buffers_dirty = TRUE;
1130 }
1131
u_vbuf_save_vertex_elements(struct u_vbuf * mgr)1132 void u_vbuf_save_vertex_elements(struct u_vbuf *mgr)
1133 {
1134 assert(!mgr->ve_saved);
1135 mgr->ve_saved = mgr->ve;
1136 }
1137
u_vbuf_restore_vertex_elements(struct u_vbuf * mgr)1138 void u_vbuf_restore_vertex_elements(struct u_vbuf *mgr)
1139 {
1140 if (mgr->ve != mgr->ve_saved) {
1141 struct pipe_context *pipe = mgr->pipe;
1142
1143 mgr->ve = mgr->ve_saved;
1144 pipe->bind_vertex_elements_state(pipe,
1145 mgr->ve ? mgr->ve->driver_cso : NULL);
1146 }
1147 mgr->ve_saved = NULL;
1148 }
1149
u_vbuf_save_vertex_buffers(struct u_vbuf * mgr)1150 void u_vbuf_save_vertex_buffers(struct u_vbuf *mgr)
1151 {
1152 util_copy_vertex_buffers(mgr->vertex_buffer_saved,
1153 &mgr->nr_vertex_buffers_saved,
1154 mgr->vertex_buffer,
1155 mgr->nr_vertex_buffers);
1156 }
1157
u_vbuf_restore_vertex_buffers(struct u_vbuf * mgr)1158 void u_vbuf_restore_vertex_buffers(struct u_vbuf *mgr)
1159 {
1160 unsigned i;
1161
1162 u_vbuf_set_vertex_buffers(mgr, mgr->nr_vertex_buffers_saved,
1163 mgr->vertex_buffer_saved);
1164 for (i = 0; i < mgr->nr_vertex_buffers_saved; i++) {
1165 pipe_resource_reference(&mgr->vertex_buffer_saved[i].buffer, NULL);
1166 }
1167 mgr->nr_vertex_buffers_saved = 0;
1168 }
1169