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04149525ea778fde8aa6cf14786ce49b151273ab
[mesa.git] / src / gallium / auxiliary / util / u_vbuf_mgr.c
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_mgr.h"
29
30 #include "util/u_format.h"
31 #include "util/u_inlines.h"
32 #include "util/u_memory.h"
33 #include "util/u_upload_mgr.h"
34 #include "translate/translate.h"
35 #include "translate/translate_cache.h"
36
37 /* Hardware vertex fetcher limitations can be described by this structure. */
38 struct u_vbuf_caps {
39 /* Vertex format CAPs. */
40 /* TRUE if hardware supports it. */
41 unsigned format_fixed32:1; /* PIPE_FORMAT_*32*_FIXED */
42 unsigned format_float16:1; /* PIPE_FORMAT_*16*_FLOAT */
43 unsigned format_float64:1; /* PIPE_FORMAT_*64*_FLOAT */
44 unsigned format_norm32:1; /* PIPE_FORMAT_*32*NORM */
45 unsigned format_scaled32:1; /* PIPE_FORMAT_*32*SCALED */
46
47 /* Whether vertex fetches don't have to be dword-aligned. */
48 /* TRUE if hardware supports it. */
49 unsigned fetch_dword_unaligned:1;
50 };
51
52 struct u_vbuf_mgr_elements {
53 unsigned count;
54 struct pipe_vertex_element ve[PIPE_MAX_ATTRIBS];
55
56 unsigned src_format_size[PIPE_MAX_ATTRIBS];
57
58 /* If (velem[i].src_format != native_format[i]), the vertex buffer
59 * referenced by the vertex element cannot be used for rendering and
60 * its vertex data must be translated to native_format[i]. */
61 enum pipe_format native_format[PIPE_MAX_ATTRIBS];
62 unsigned native_format_size[PIPE_MAX_ATTRIBS];
63
64 /* This might mean two things:
65 * - src_format != native_format, as discussed above.
66 * - src_offset % 4 != 0 (if the caps don't allow such an offset). */
67 boolean incompatible_layout;
68 };
69
70 struct u_vbuf_mgr_priv {
71 struct u_vbuf_mgr b;
72 struct u_vbuf_caps caps;
73 struct pipe_context *pipe;
74
75 struct translate_cache *translate_cache;
76 unsigned translate_vb_slot;
77
78 struct u_vbuf_mgr_elements *ve;
79 void *saved_ve, *fallback_ve;
80 boolean ve_binding_lock;
81
82 boolean any_user_vbs;
83 boolean incompatible_vb_layout;
84 };
85
86 static void u_vbuf_mgr_init_format_caps(struct u_vbuf_mgr_priv *mgr)
87 {
88 struct pipe_screen *screen = mgr->pipe->screen;
89
90 mgr->caps.format_fixed32 =
91 screen->is_format_supported(screen, PIPE_FORMAT_R32_FIXED, PIPE_BUFFER,
92 0, PIPE_BIND_VERTEX_BUFFER);
93
94 mgr->caps.format_float16 =
95 screen->is_format_supported(screen, PIPE_FORMAT_R16_FLOAT, PIPE_BUFFER,
96 0, PIPE_BIND_VERTEX_BUFFER);
97
98 mgr->caps.format_float64 =
99 screen->is_format_supported(screen, PIPE_FORMAT_R64_FLOAT, PIPE_BUFFER,
100 0, PIPE_BIND_VERTEX_BUFFER);
101
102 mgr->caps.format_norm32 =
103 screen->is_format_supported(screen, PIPE_FORMAT_R32_UNORM, PIPE_BUFFER,
104 0, PIPE_BIND_VERTEX_BUFFER) &&
105 screen->is_format_supported(screen, PIPE_FORMAT_R32_SNORM, PIPE_BUFFER,
106 0, PIPE_BIND_VERTEX_BUFFER);
107
108 mgr->caps.format_scaled32 =
109 screen->is_format_supported(screen, PIPE_FORMAT_R32_USCALED, PIPE_BUFFER,
110 0, PIPE_BIND_VERTEX_BUFFER) &&
111 screen->is_format_supported(screen, PIPE_FORMAT_R32_SSCALED, PIPE_BUFFER,
112 0, PIPE_BIND_VERTEX_BUFFER);
113 }
114
115 struct u_vbuf_mgr *
116 u_vbuf_mgr_create(struct pipe_context *pipe,
117 unsigned upload_buffer_size,
118 unsigned upload_buffer_alignment,
119 unsigned upload_buffer_bind,
120 enum u_fetch_alignment fetch_alignment)
121 {
122 struct u_vbuf_mgr_priv *mgr = CALLOC_STRUCT(u_vbuf_mgr_priv);
123
124 mgr->pipe = pipe;
125 mgr->translate_cache = translate_cache_create();
126
127 mgr->b.uploader = u_upload_create(pipe, upload_buffer_size,
128 upload_buffer_alignment,
129 upload_buffer_bind);
130
131 mgr->caps.fetch_dword_unaligned =
132 fetch_alignment == U_VERTEX_FETCH_BYTE_ALIGNED;
133
134 u_vbuf_mgr_init_format_caps(mgr);
135
136 return &mgr->b;
137 }
138
139 void u_vbuf_mgr_destroy(struct u_vbuf_mgr *mgrb)
140 {
141 struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
142 unsigned i;
143
144 for (i = 0; i < mgr->b.nr_real_vertex_buffers; i++) {
145 pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, NULL);
146 pipe_resource_reference(&mgr->b.real_vertex_buffer[i], NULL);
147 }
148
149 translate_cache_destroy(mgr->translate_cache);
150 u_upload_destroy(mgr->b.uploader);
151 FREE(mgr);
152 }
153
154
155 static void u_vbuf_translate_begin(struct u_vbuf_mgr_priv *mgr,
156 int min_index, int max_index,
157 boolean *upload_flushed)
158 {
159 struct translate_key key;
160 struct translate_element *te;
161 unsigned tr_elem_index[PIPE_MAX_ATTRIBS];
162 struct translate *tr;
163 boolean vb_translated[PIPE_MAX_ATTRIBS] = {0};
164 uint8_t *vb_map[PIPE_MAX_ATTRIBS] = {0}, *out_map;
165 struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {0};
166 struct pipe_resource *out_buffer = NULL;
167 unsigned i, num_verts, out_offset;
168 struct pipe_vertex_element new_velems[PIPE_MAX_ATTRIBS];
169
170 memset(&key, 0, sizeof(key));
171 memset(tr_elem_index, 0xff, sizeof(tr_elem_index));
172
173 /* Initialize the translate key, i.e. the recipe how vertices should be
174 * translated. */
175 memset(&key, 0, sizeof key);
176 for (i = 0; i < mgr->ve->count; i++) {
177 struct pipe_vertex_buffer *vb =
178 &mgr->b.vertex_buffer[mgr->ve->ve[i].vertex_buffer_index];
179 enum pipe_format output_format = mgr->ve->native_format[i];
180 unsigned output_format_size = mgr->ve->native_format_size[i];
181
182 /* Check for support. */
183 if (mgr->ve->ve[i].src_format == mgr->ve->native_format[i] &&
184 (mgr->caps.fetch_dword_unaligned ||
185 (vb->buffer_offset % 4 == 0 &&
186 vb->stride % 4 == 0 &&
187 mgr->ve->ve[i].src_offset % 4 == 0))) {
188 continue;
189 }
190
191 /* Workaround for translate: output floats instead of halfs. */
192 switch (output_format) {
193 case PIPE_FORMAT_R16_FLOAT:
194 output_format = PIPE_FORMAT_R32_FLOAT;
195 output_format_size = 4;
196 break;
197 case PIPE_FORMAT_R16G16_FLOAT:
198 output_format = PIPE_FORMAT_R32G32_FLOAT;
199 output_format_size = 8;
200 break;
201 case PIPE_FORMAT_R16G16B16_FLOAT:
202 output_format = PIPE_FORMAT_R32G32B32_FLOAT;
203 output_format_size = 12;
204 break;
205 case PIPE_FORMAT_R16G16B16A16_FLOAT:
206 output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
207 output_format_size = 16;
208 break;
209 default:;
210 }
211
212 /* Add this vertex element. */
213 te = &key.element[key.nr_elements];
214 /*te->type;
215 te->instance_divisor;*/
216 te->input_buffer = mgr->ve->ve[i].vertex_buffer_index;
217 te->input_format = mgr->ve->ve[i].src_format;
218 te->input_offset = mgr->ve->ve[i].src_offset;
219 te->output_format = output_format;
220 te->output_offset = key.output_stride;
221
222 key.output_stride += output_format_size;
223 vb_translated[mgr->ve->ve[i].vertex_buffer_index] = TRUE;
224 tr_elem_index[i] = key.nr_elements;
225 key.nr_elements++;
226 }
227
228 /* Get a translate object. */
229 tr = translate_cache_find(mgr->translate_cache, &key);
230
231 /* Map buffers we want to translate. */
232 for (i = 0; i < mgr->b.nr_vertex_buffers; i++) {
233 if (vb_translated[i]) {
234 struct pipe_vertex_buffer *vb = &mgr->b.vertex_buffer[i];
235
236 vb_map[i] = pipe_buffer_map(mgr->pipe, vb->buffer,
237 PIPE_TRANSFER_READ, &vb_transfer[i]);
238
239 tr->set_buffer(tr, i,
240 vb_map[i] + vb->buffer_offset + vb->stride * min_index,
241 vb->stride, ~0);
242 }
243 }
244
245 /* Create and map the output buffer. */
246 num_verts = max_index + 1 - min_index;
247
248 u_upload_alloc(mgr->b.uploader,
249 key.output_stride * min_index,
250 key.output_stride * num_verts,
251 &out_offset, &out_buffer, upload_flushed,
252 (void**)&out_map);
253
254 out_offset -= key.output_stride * min_index;
255
256 /* Translate. */
257 tr->run(tr, 0, num_verts, 0, out_map);
258
259 /* Unmap all buffers. */
260 for (i = 0; i < mgr->b.nr_vertex_buffers; i++) {
261 if (vb_translated[i]) {
262 pipe_buffer_unmap(mgr->pipe, vb_transfer[i]);
263 }
264 }
265
266 /* Setup the new vertex buffer in the first free slot. */
267 mgr->translate_vb_slot = ~0;
268 for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {
269 if (!mgr->b.vertex_buffer[i].buffer) {
270 mgr->translate_vb_slot = i;
271
272 if (i >= mgr->b.nr_vertex_buffers) {
273 mgr->b.nr_real_vertex_buffers = i+1;
274 }
275 break;
276 }
277 }
278
279 if (mgr->translate_vb_slot != ~0) {
280 /* Setup the new vertex buffer. */
281 pipe_resource_reference(
282 &mgr->b.real_vertex_buffer[mgr->translate_vb_slot], out_buffer);
283 mgr->b.vertex_buffer[mgr->translate_vb_slot].buffer_offset = out_offset;
284 mgr->b.vertex_buffer[mgr->translate_vb_slot].stride = key.output_stride;
285
286 /* Setup new vertex elements. */
287 for (i = 0; i < mgr->ve->count; i++) {
288 if (tr_elem_index[i] < key.nr_elements) {
289 te = &key.element[tr_elem_index[i]];
290 new_velems[i].instance_divisor = mgr->ve->ve[i].instance_divisor;
291 new_velems[i].src_format = te->output_format;
292 new_velems[i].src_offset = te->output_offset;
293 new_velems[i].vertex_buffer_index = mgr->translate_vb_slot;
294 } else {
295 memcpy(&new_velems[i], &mgr->ve->ve[i],
296 sizeof(struct pipe_vertex_element));
297 }
298 }
299
300 mgr->fallback_ve =
301 mgr->pipe->create_vertex_elements_state(mgr->pipe, mgr->ve->count,
302 new_velems);
303
304 /* Preserve saved_ve. */
305 mgr->ve_binding_lock = TRUE;
306 mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->fallback_ve);
307 mgr->ve_binding_lock = FALSE;
308 }
309
310 pipe_resource_reference(&out_buffer, NULL);
311 }
312
313 static void u_vbuf_translate_end(struct u_vbuf_mgr_priv *mgr)
314 {
315 if (mgr->fallback_ve == NULL) {
316 return;
317 }
318
319 /* Restore vertex elements. */
320 /* Note that saved_ve will be overwritten in bind_vertex_elements_state. */
321 mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->saved_ve);
322 mgr->pipe->delete_vertex_elements_state(mgr->pipe, mgr->fallback_ve);
323 mgr->fallback_ve = NULL;
324
325 /* Delete the now-unused VBO. */
326 pipe_resource_reference(&mgr->b.real_vertex_buffer[mgr->translate_vb_slot],
327 NULL);
328 mgr->b.nr_real_vertex_buffers = mgr->b.nr_vertex_buffers;
329 }
330
331 #define FORMAT_REPLACE(what, withwhat) \
332 case PIPE_FORMAT_##what: format = PIPE_FORMAT_##withwhat; break
333
334 struct u_vbuf_mgr_elements *
335 u_vbuf_mgr_create_vertex_elements(struct u_vbuf_mgr *mgrb,
336 unsigned count,
337 const struct pipe_vertex_element *attribs,
338 struct pipe_vertex_element *native_attribs)
339 {
340 struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
341 unsigned i;
342 struct u_vbuf_mgr_elements *ve = CALLOC_STRUCT(u_vbuf_mgr_elements);
343
344 ve->count = count;
345
346 if (!count) {
347 return ve;
348 }
349
350 memcpy(ve->ve, attribs, sizeof(struct pipe_vertex_element) * count);
351 memcpy(native_attribs, attribs, sizeof(struct pipe_vertex_element) * count);
352
353 /* Set the best native format in case the original format is not
354 * supported. */
355 for (i = 0; i < count; i++) {
356 enum pipe_format format = ve->ve[i].src_format;
357
358 ve->src_format_size[i] = util_format_get_blocksize(format);
359
360 /* Choose a native format.
361 * For now we don't care about the alignment, that's going to
362 * be sorted out later. */
363 if (!mgr->caps.format_fixed32) {
364 switch (format) {
365 FORMAT_REPLACE(R32_FIXED, R32_FLOAT);
366 FORMAT_REPLACE(R32G32_FIXED, R32G32_FLOAT);
367 FORMAT_REPLACE(R32G32B32_FIXED, R32G32B32_FLOAT);
368 FORMAT_REPLACE(R32G32B32A32_FIXED, R32G32B32A32_FLOAT);
369 default:;
370 }
371 }
372 if (!mgr->caps.format_float16) {
373 switch (format) {
374 FORMAT_REPLACE(R16_FLOAT, R32_FLOAT);
375 FORMAT_REPLACE(R16G16_FLOAT, R32G32_FLOAT);
376 FORMAT_REPLACE(R16G16B16_FLOAT, R32G32B32_FLOAT);
377 FORMAT_REPLACE(R16G16B16A16_FLOAT, R32G32B32A32_FLOAT);
378 default:;
379 }
380 }
381 if (!mgr->caps.format_float64) {
382 switch (format) {
383 FORMAT_REPLACE(R64_FLOAT, R32_FLOAT);
384 FORMAT_REPLACE(R64G64_FLOAT, R32G32_FLOAT);
385 FORMAT_REPLACE(R64G64B64_FLOAT, R32G32B32_FLOAT);
386 FORMAT_REPLACE(R64G64B64A64_FLOAT, R32G32B32A32_FLOAT);
387 default:;
388 }
389 }
390 if (!mgr->caps.format_norm32) {
391 switch (format) {
392 FORMAT_REPLACE(R32_UNORM, R32_FLOAT);
393 FORMAT_REPLACE(R32G32_UNORM, R32G32_FLOAT);
394 FORMAT_REPLACE(R32G32B32_UNORM, R32G32B32_FLOAT);
395 FORMAT_REPLACE(R32G32B32A32_UNORM, R32G32B32A32_FLOAT);
396 FORMAT_REPLACE(R32_SNORM, R32_FLOAT);
397 FORMAT_REPLACE(R32G32_SNORM, R32G32_FLOAT);
398 FORMAT_REPLACE(R32G32B32_SNORM, R32G32B32_FLOAT);
399 FORMAT_REPLACE(R32G32B32A32_SNORM, R32G32B32A32_FLOAT);
400 default:;
401 }
402 }
403 if (!mgr->caps.format_scaled32) {
404 switch (format) {
405 FORMAT_REPLACE(R32_USCALED, R32_FLOAT);
406 FORMAT_REPLACE(R32G32_USCALED, R32G32_FLOAT);
407 FORMAT_REPLACE(R32G32B32_USCALED, R32G32B32_FLOAT);
408 FORMAT_REPLACE(R32G32B32A32_USCALED,R32G32B32A32_FLOAT);
409 FORMAT_REPLACE(R32_SSCALED, R32_FLOAT);
410 FORMAT_REPLACE(R32G32_SSCALED, R32G32_FLOAT);
411 FORMAT_REPLACE(R32G32B32_SSCALED, R32G32B32_FLOAT);
412 FORMAT_REPLACE(R32G32B32A32_SSCALED,R32G32B32A32_FLOAT);
413 default:;
414 }
415 }
416
417 native_attribs[i].src_format = format;
418 ve->native_format[i] = format;
419 ve->native_format_size[i] =
420 util_format_get_blocksize(ve->native_format[i]);
421
422 ve->incompatible_layout =
423 ve->incompatible_layout ||
424 ve->ve[i].src_format != ve->native_format[i] ||
425 (!mgr->caps.fetch_dword_unaligned && ve->ve[i].src_offset % 4 != 0);
426 }
427
428 /* Align the formats to the size of DWORD if needed. */
429 if (!mgr->caps.fetch_dword_unaligned) {
430 for (i = 0; i < count; i++) {
431 ve->native_format_size[i] = align(ve->native_format_size[i], 4);
432 }
433 }
434
435 return ve;
436 }
437
438 void u_vbuf_mgr_bind_vertex_elements(struct u_vbuf_mgr *mgrb,
439 void *cso,
440 struct u_vbuf_mgr_elements *ve)
441 {
442 struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
443
444 if (!cso) {
445 return;
446 }
447
448 if (!mgr->ve_binding_lock) {
449 mgr->saved_ve = cso;
450 mgr->ve = ve;
451 }
452 }
453
454 void u_vbuf_mgr_destroy_vertex_elements(struct u_vbuf_mgr *mgr,
455 struct u_vbuf_mgr_elements *ve)
456 {
457 FREE(ve);
458 }
459
460 void u_vbuf_mgr_set_vertex_buffers(struct u_vbuf_mgr *mgrb,
461 unsigned count,
462 const struct pipe_vertex_buffer *bufs)
463 {
464 struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
465 unsigned i;
466
467 mgr->any_user_vbs = FALSE;
468 mgr->incompatible_vb_layout = FALSE;
469
470 if (!mgr->caps.fetch_dword_unaligned) {
471 /* Check if the strides and offsets are aligned to the size of DWORD. */
472 for (i = 0; i < count; i++) {
473 if (bufs[i].buffer) {
474 if (bufs[i].stride % 4 != 0 ||
475 bufs[i].buffer_offset % 4 != 0) {
476 mgr->incompatible_vb_layout = TRUE;
477 break;
478 }
479 }
480 }
481 }
482
483 for (i = 0; i < count; i++) {
484 const struct pipe_vertex_buffer *vb = &bufs[i];
485
486 pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, vb->buffer);
487 pipe_resource_reference(&mgr->b.real_vertex_buffer[i], NULL);
488
489 if (!vb->buffer) {
490 continue;
491 }
492
493 if (u_vbuf_resource(vb->buffer)->user_ptr) {
494 mgr->any_user_vbs = TRUE;
495 continue;
496 }
497
498 pipe_resource_reference(&mgr->b.real_vertex_buffer[i], vb->buffer);
499 }
500
501 for (; i < mgr->b.nr_real_vertex_buffers; i++) {
502 pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, NULL);
503 pipe_resource_reference(&mgr->b.real_vertex_buffer[i], NULL);
504 }
505
506 memcpy(mgr->b.vertex_buffer, bufs,
507 sizeof(struct pipe_vertex_buffer) * count);
508
509 mgr->b.nr_vertex_buffers = count;
510 mgr->b.nr_real_vertex_buffers = count;
511 }
512
513 static void u_vbuf_upload_buffers(struct u_vbuf_mgr_priv *mgr,
514 int min_index, int max_index,
515 unsigned instance_count,
516 boolean *upload_flushed)
517 {
518 unsigned i, nr = mgr->ve->count;
519 unsigned count = max_index + 1 - min_index;
520 boolean uploaded[PIPE_MAX_ATTRIBS] = {0};
521
522 for (i = 0; i < nr; i++) {
523 unsigned index = mgr->ve->ve[i].vertex_buffer_index;
524 struct pipe_vertex_buffer *vb = &mgr->b.vertex_buffer[index];
525
526 if (vb->buffer &&
527 u_vbuf_resource(vb->buffer)->user_ptr &&
528 !uploaded[index]) {
529 unsigned first, size;
530 boolean flushed;
531 unsigned instance_div = mgr->ve->ve[i].instance_divisor;
532
533 if (instance_div) {
534 first = 0;
535 size = vb->stride *
536 ((instance_count + instance_div - 1) / instance_div);
537 } else if (vb->stride) {
538 first = vb->stride * min_index;
539 size = vb->stride * count;
540 } else {
541 first = 0;
542 size = mgr->ve->native_format_size[i];
543 }
544
545 u_upload_data(mgr->b.uploader, first, size,
546 u_vbuf_resource(vb->buffer)->user_ptr + first,
547 &vb->buffer_offset,
548 &mgr->b.real_vertex_buffer[index],
549 &flushed);
550
551 vb->buffer_offset -= first;
552
553 uploaded[index] = TRUE;
554 *upload_flushed = *upload_flushed || flushed;
555 } else {
556 assert(mgr->b.real_vertex_buffer[index]);
557 }
558 }
559 }
560
561 static void u_vbuf_mgr_compute_max_index(struct u_vbuf_mgr_priv *mgr)
562 {
563 unsigned i, nr = mgr->ve->count;
564
565 mgr->b.max_index = ~0;
566
567 for (i = 0; i < nr; i++) {
568 struct pipe_vertex_buffer *vb =
569 &mgr->b.vertex_buffer[mgr->ve->ve[i].vertex_buffer_index];
570 int unused;
571 unsigned max_index;
572
573 if (!vb->buffer ||
574 !vb->stride ||
575 u_vbuf_resource(vb->buffer)->user_ptr) {
576 continue;
577 }
578
579 /* How many bytes is unused after the last vertex.
580 * width0 may be "count*stride - unused" and we have to compensate
581 * for that when dividing by stride. */
582 unused = vb->stride -
583 (mgr->ve->ve[i].src_offset + mgr->ve->src_format_size[i]);
584
585 /* If src_offset is greater than stride (which means it's a buffer
586 * offset rather than a vertex offset)... */
587 if (unused < 0) {
588 unused = 0;
589 }
590
591 /* Compute the maximum index for this vertex element. */
592 max_index =
593 (vb->buffer->width0 - vb->buffer_offset + (unsigned)unused) /
594 vb->stride - 1;
595
596 mgr->b.max_index = MIN2(mgr->b.max_index, max_index);
597 }
598 }
599
600 void u_vbuf_mgr_draw_begin(struct u_vbuf_mgr *mgrb,
601 const struct pipe_draw_info *info,
602 boolean *buffers_updated,
603 boolean *uploader_flushed)
604 {
605 struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
606 boolean bufs_updated = FALSE, upload_flushed = FALSE;
607 int min_index, max_index;
608
609 u_vbuf_mgr_compute_max_index(mgr);
610
611 min_index = info->min_index - info->index_bias;
612 if (info->max_index == ~0) {
613 max_index = mgr->b.max_index;
614 } else {
615 max_index = MIN2(info->max_index - info->index_bias, mgr->b.max_index);
616 }
617
618 /* Translate vertices with non-native layouts or formats. */
619 if (mgr->incompatible_vb_layout || mgr->ve->incompatible_layout) {
620 u_vbuf_translate_begin(mgr, min_index, max_index, &upload_flushed);
621
622 if (mgr->fallback_ve) {
623 bufs_updated = TRUE;
624 }
625 }
626
627 /* Upload user buffers. */
628 if (mgr->any_user_vbs) {
629 u_vbuf_upload_buffers(mgr, min_index, max_index, info->instance_count,
630 &upload_flushed);
631 bufs_updated = TRUE;
632 }
633
634 /* Set the return values. */
635 if (buffers_updated) {
636 *buffers_updated = bufs_updated;
637 }
638 if (uploader_flushed) {
639 *uploader_flushed = upload_flushed;
640 }
641 }
642
643 void u_vbuf_mgr_draw_end(struct u_vbuf_mgr *mgrb)
644 {
645 struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
646
647 if (mgr->fallback_ve) {
648 u_vbuf_translate_end(mgr);
649 }
650 }