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u_vbuf_mgr: rename translate_vb_slot -> fallback_vb_slot
[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 struct u_vbuf_elements {
38 unsigned count;
39 struct pipe_vertex_element ve[PIPE_MAX_ATTRIBS];
40
41 unsigned src_format_size[PIPE_MAX_ATTRIBS];
42
43 /* If (velem[i].src_format != native_format[i]), the vertex buffer
44 * referenced by the vertex element cannot be used for rendering and
45 * its vertex data must be translated to native_format[i]. */
46 enum pipe_format native_format[PIPE_MAX_ATTRIBS];
47 unsigned native_format_size[PIPE_MAX_ATTRIBS];
48
49 /* This might mean two things:
50 * - src_format != native_format, as discussed above.
51 * - src_offset % 4 != 0 (if the caps don't allow such an offset). */
52 boolean incompatible_layout;
53 /* Per-element flags. */
54 boolean incompatible_layout_elem[PIPE_MAX_ATTRIBS];
55 };
56
57 struct u_vbuf_priv {
58 struct u_vbuf_mgr b;
59 struct pipe_context *pipe;
60 struct translate_cache *translate_cache;
61
62 /* Vertex element state bound by the state tracker. */
63 void *saved_ve;
64 /* and its associated helper structure for this module. */
65 struct u_vbuf_elements *ve;
66
67 /* Vertex elements used for the translate fallback. */
68 struct pipe_vertex_element fallback_velems[PIPE_MAX_ATTRIBS];
69 /* If non-NULL, this is a vertex element state used for the translate
70 * fallback and therefore used for rendering too. */
71 void *fallback_ve;
72 /* The vertex buffer slot index where translated vertices have been
73 * stored in. */
74 unsigned fallback_vb_slot;
75 /* When binding the fallback vertex element state, we don't want to
76 * change saved_ve and ve. This is set to TRUE in such cases. */
77 boolean ve_binding_lock;
78
79 /* Whether there is any user buffer. */
80 boolean any_user_vbs;
81 /* Whether there is a buffer with a non-native layout. */
82 boolean incompatible_vb_layout;
83 /* Per-buffer flags. */
84 boolean incompatible_vb[PIPE_MAX_ATTRIBS];
85 };
86
87 static void u_vbuf_init_format_caps(struct u_vbuf_priv *mgr)
88 {
89 struct pipe_screen *screen = mgr->pipe->screen;
90
91 mgr->b.caps.format_fixed32 =
92 screen->is_format_supported(screen, PIPE_FORMAT_R32_FIXED, PIPE_BUFFER,
93 0, PIPE_BIND_VERTEX_BUFFER);
94
95 mgr->b.caps.format_float16 =
96 screen->is_format_supported(screen, PIPE_FORMAT_R16_FLOAT, PIPE_BUFFER,
97 0, PIPE_BIND_VERTEX_BUFFER);
98
99 mgr->b.caps.format_float64 =
100 screen->is_format_supported(screen, PIPE_FORMAT_R64_FLOAT, PIPE_BUFFER,
101 0, PIPE_BIND_VERTEX_BUFFER);
102
103 mgr->b.caps.format_norm32 =
104 screen->is_format_supported(screen, PIPE_FORMAT_R32_UNORM, PIPE_BUFFER,
105 0, PIPE_BIND_VERTEX_BUFFER) &&
106 screen->is_format_supported(screen, PIPE_FORMAT_R32_SNORM, PIPE_BUFFER,
107 0, PIPE_BIND_VERTEX_BUFFER);
108
109 mgr->b.caps.format_scaled32 =
110 screen->is_format_supported(screen, PIPE_FORMAT_R32_USCALED, PIPE_BUFFER,
111 0, PIPE_BIND_VERTEX_BUFFER) &&
112 screen->is_format_supported(screen, PIPE_FORMAT_R32_SSCALED, PIPE_BUFFER,
113 0, PIPE_BIND_VERTEX_BUFFER);
114 }
115
116 struct u_vbuf_mgr *
117 u_vbuf_create(struct pipe_context *pipe,
118 unsigned upload_buffer_size,
119 unsigned upload_buffer_alignment,
120 unsigned upload_buffer_bind,
121 enum u_fetch_alignment fetch_alignment)
122 {
123 struct u_vbuf_priv *mgr = CALLOC_STRUCT(u_vbuf_priv);
124
125 mgr->pipe = pipe;
126 mgr->translate_cache = translate_cache_create();
127 mgr->fallback_vb_slot = ~0;
128
129 mgr->b.uploader = u_upload_create(pipe, upload_buffer_size,
130 upload_buffer_alignment,
131 upload_buffer_bind);
132
133 mgr->b.caps.fetch_dword_unaligned =
134 fetch_alignment == U_VERTEX_FETCH_BYTE_ALIGNED;
135
136 u_vbuf_init_format_caps(mgr);
137
138 return &mgr->b;
139 }
140
141 void u_vbuf_destroy(struct u_vbuf_mgr *mgrb)
142 {
143 struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb;
144 unsigned i;
145
146 for (i = 0; i < mgr->b.nr_vertex_buffers; i++) {
147 pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, NULL);
148 }
149 for (i = 0; i < mgr->b.nr_real_vertex_buffers; i++) {
150 pipe_resource_reference(&mgr->b.real_vertex_buffer[i].buffer, NULL);
151 }
152
153 translate_cache_destroy(mgr->translate_cache);
154 u_upload_destroy(mgr->b.uploader);
155 FREE(mgr);
156 }
157
158
159 static void
160 u_vbuf_translate_begin(struct u_vbuf_priv *mgr,
161 int min_index, int max_index)
162 {
163 struct translate_key key;
164 struct translate_element *te;
165 unsigned tr_elem_index[PIPE_MAX_ATTRIBS];
166 struct translate *tr;
167 boolean vb_translated[PIPE_MAX_ATTRIBS] = {0};
168 uint8_t *vb_map[PIPE_MAX_ATTRIBS] = {0}, *out_map;
169 struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {0};
170 struct pipe_resource *out_buffer = NULL;
171 unsigned i, num_verts, out_offset;
172 boolean upload_flushed = FALSE;
173
174 memset(&key, 0, sizeof(key));
175 memset(tr_elem_index, 0xff, sizeof(tr_elem_index));
176
177 /* Initialize the translate key, i.e. the recipe how vertices should be
178 * translated. */
179 memset(&key, 0, sizeof key);
180 for (i = 0; i < mgr->ve->count; i++) {
181 enum pipe_format output_format = mgr->ve->native_format[i];
182 unsigned output_format_size = mgr->ve->native_format_size[i];
183
184 /* Check for support. */
185 if (!mgr->ve->incompatible_layout_elem[i] &&
186 !mgr->incompatible_vb[mgr->ve->ve[i].vertex_buffer_index]) {
187 continue;
188 }
189
190 /* Workaround for translate: output floats instead of halfs. */
191 switch (output_format) {
192 case PIPE_FORMAT_R16_FLOAT:
193 output_format = PIPE_FORMAT_R32_FLOAT;
194 output_format_size = 4;
195 break;
196 case PIPE_FORMAT_R16G16_FLOAT:
197 output_format = PIPE_FORMAT_R32G32_FLOAT;
198 output_format_size = 8;
199 break;
200 case PIPE_FORMAT_R16G16B16_FLOAT:
201 output_format = PIPE_FORMAT_R32G32B32_FLOAT;
202 output_format_size = 12;
203 break;
204 case PIPE_FORMAT_R16G16B16A16_FLOAT:
205 output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
206 output_format_size = 16;
207 break;
208 default:;
209 }
210
211 /* Add this vertex element. */
212 te = &key.element[key.nr_elements];
213 /*te->type;
214 te->instance_divisor;*/
215 te->input_buffer = mgr->ve->ve[i].vertex_buffer_index;
216 te->input_format = mgr->ve->ve[i].src_format;
217 te->input_offset = mgr->ve->ve[i].src_offset;
218 te->output_format = output_format;
219 te->output_offset = key.output_stride;
220
221 key.output_stride += output_format_size;
222 vb_translated[mgr->ve->ve[i].vertex_buffer_index] = TRUE;
223 tr_elem_index[i] = key.nr_elements;
224 key.nr_elements++;
225 }
226
227 /* Get a translate object. */
228 tr = translate_cache_find(mgr->translate_cache, &key);
229
230 /* Map buffers we want to translate. */
231 for (i = 0; i < mgr->b.nr_vertex_buffers; i++) {
232 if (vb_translated[i]) {
233 struct pipe_vertex_buffer *vb = &mgr->b.vertex_buffer[i];
234
235 vb_map[i] = pipe_buffer_map(mgr->pipe, vb->buffer,
236 PIPE_TRANSFER_READ, &vb_transfer[i]);
237
238 tr->set_buffer(tr, i,
239 vb_map[i] + vb->buffer_offset + vb->stride * min_index,
240 vb->stride, ~0);
241 }
242 }
243
244 /* Create and map the output buffer. */
245 num_verts = max_index + 1 - min_index;
246
247 u_upload_alloc(mgr->b.uploader,
248 key.output_stride * min_index,
249 key.output_stride * num_verts,
250 &out_offset, &out_buffer, &upload_flushed,
251 (void**)&out_map);
252
253 out_offset -= key.output_stride * min_index;
254
255 /* Translate. */
256 tr->run(tr, 0, num_verts, 0, out_map);
257
258 /* Unmap all buffers. */
259 for (i = 0; i < mgr->b.nr_vertex_buffers; i++) {
260 if (vb_translated[i]) {
261 pipe_buffer_unmap(mgr->pipe, vb_transfer[i]);
262 }
263 }
264
265 /* Setup the new vertex buffer in the first free slot. */
266 mgr->fallback_vb_slot = ~0;
267 for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {
268 if (!mgr->b.vertex_buffer[i].buffer) {
269 mgr->fallback_vb_slot = i;
270
271 if (i >= mgr->b.nr_vertex_buffers) {
272 mgr->b.nr_real_vertex_buffers = i+1;
273 }
274 break;
275 }
276 }
277
278 if (mgr->fallback_vb_slot != ~0) {
279 /* Setup the new vertex buffer. */
280 pipe_resource_reference(
281 &mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].buffer, out_buffer);
282 mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].buffer_offset = out_offset;
283 mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].stride = key.output_stride;
284
285 /* Setup new vertex elements. */
286 for (i = 0; i < mgr->ve->count; i++) {
287 if (tr_elem_index[i] < key.nr_elements) {
288 te = &key.element[tr_elem_index[i]];
289 mgr->fallback_velems[i].instance_divisor = mgr->ve->ve[i].instance_divisor;
290 mgr->fallback_velems[i].src_format = te->output_format;
291 mgr->fallback_velems[i].src_offset = te->output_offset;
292 mgr->fallback_velems[i].vertex_buffer_index = mgr->fallback_vb_slot;
293 } else {
294 memcpy(&mgr->fallback_velems[i], &mgr->ve->ve[i],
295 sizeof(struct pipe_vertex_element));
296 }
297 }
298
299 mgr->fallback_ve =
300 mgr->pipe->create_vertex_elements_state(mgr->pipe, mgr->ve->count,
301 mgr->fallback_velems);
302
303 /* Preserve saved_ve. */
304 mgr->ve_binding_lock = TRUE;
305 mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->fallback_ve);
306 mgr->ve_binding_lock = FALSE;
307 }
308
309 pipe_resource_reference(&out_buffer, NULL);
310 }
311
312 static void u_vbuf_translate_end(struct u_vbuf_priv *mgr)
313 {
314 if (mgr->fallback_ve == NULL) {
315 return;
316 }
317
318 /* Restore vertex elements. */
319 /* Note that saved_ve will be overwritten in bind_vertex_elements_state. */
320 mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->saved_ve);
321 mgr->pipe->delete_vertex_elements_state(mgr->pipe, mgr->fallback_ve);
322 mgr->fallback_ve = NULL;
323
324 /* Delete the now-unused VBO. */
325 pipe_resource_reference(&mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].buffer,
326 NULL);
327 mgr->fallback_vb_slot = ~0;
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_elements *
335 u_vbuf_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_priv *mgr = (struct u_vbuf_priv*)mgrb;
341 unsigned i;
342 struct u_vbuf_elements *ve = CALLOC_STRUCT(u_vbuf_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->b.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->b.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->b.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->b.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->b.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_elem[i] =
423 ve->ve[i].src_format != ve->native_format[i] ||
424 (!mgr->b.caps.fetch_dword_unaligned && ve->ve[i].src_offset % 4 != 0);
425 ve->incompatible_layout =
426 ve->incompatible_layout ||
427 ve->incompatible_layout_elem[i];
428 }
429
430 /* Align the formats to the size of DWORD if needed. */
431 if (!mgr->b.caps.fetch_dword_unaligned) {
432 for (i = 0; i < count; i++) {
433 ve->native_format_size[i] = align(ve->native_format_size[i], 4);
434 }
435 }
436
437 return ve;
438 }
439
440 void u_vbuf_bind_vertex_elements(struct u_vbuf_mgr *mgrb,
441 void *cso,
442 struct u_vbuf_elements *ve)
443 {
444 struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb;
445
446 if (!cso) {
447 return;
448 }
449
450 if (!mgr->ve_binding_lock) {
451 mgr->saved_ve = cso;
452 mgr->ve = ve;
453 }
454 }
455
456 void u_vbuf_destroy_vertex_elements(struct u_vbuf_mgr *mgr,
457 struct u_vbuf_elements *ve)
458 {
459 FREE(ve);
460 }
461
462 void u_vbuf_set_vertex_buffers(struct u_vbuf_mgr *mgrb,
463 unsigned count,
464 const struct pipe_vertex_buffer *bufs)
465 {
466 struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb;
467 unsigned i;
468
469 mgr->any_user_vbs = FALSE;
470 mgr->incompatible_vb_layout = FALSE;
471 memset(mgr->incompatible_vb, 0, sizeof(mgr->incompatible_vb));
472
473 if (!mgr->b.caps.fetch_dword_unaligned) {
474 /* Check if the strides and offsets are aligned to the size of DWORD. */
475 for (i = 0; i < count; i++) {
476 if (bufs[i].buffer) {
477 if (bufs[i].stride % 4 != 0 ||
478 bufs[i].buffer_offset % 4 != 0) {
479 mgr->incompatible_vb_layout = TRUE;
480 mgr->incompatible_vb[i] = TRUE;
481 }
482 }
483 }
484 }
485
486 for (i = 0; i < count; i++) {
487 const struct pipe_vertex_buffer *vb = &bufs[i];
488
489 pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, vb->buffer);
490
491 mgr->b.real_vertex_buffer[i].buffer_offset =
492 mgr->b.vertex_buffer[i].buffer_offset = vb->buffer_offset;
493
494 mgr->b.real_vertex_buffer[i].stride =
495 mgr->b.vertex_buffer[i].stride = vb->stride;
496
497 if (!vb->buffer) {
498 pipe_resource_reference(&mgr->b.real_vertex_buffer[i].buffer, NULL);
499 continue;
500 }
501
502 if (u_vbuf_resource(vb->buffer)->user_ptr) {
503 pipe_resource_reference(&mgr->b.real_vertex_buffer[i].buffer, NULL);
504 mgr->any_user_vbs = TRUE;
505 continue;
506 }
507
508 pipe_resource_reference(&mgr->b.real_vertex_buffer[i].buffer, vb->buffer);
509 }
510
511 for (i = count; i < mgr->b.nr_vertex_buffers; i++) {
512 pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, NULL);
513 }
514 for (i = count; i < mgr->b.nr_real_vertex_buffers; i++) {
515 pipe_resource_reference(&mgr->b.real_vertex_buffer[i].buffer, NULL);
516 }
517
518 mgr->b.nr_vertex_buffers = count;
519 mgr->b.nr_real_vertex_buffers = count;
520 }
521
522 void u_vbuf_set_index_buffer(struct u_vbuf_mgr *mgr,
523 const struct pipe_index_buffer *ib)
524 {
525 if (ib && ib->buffer) {
526 assert(ib->offset % ib->index_size == 0);
527 pipe_resource_reference(&mgr->index_buffer.buffer, ib->buffer);
528 mgr->index_buffer.offset = ib->offset;
529 mgr->index_buffer.index_size = ib->index_size;
530 } else {
531 pipe_resource_reference(&mgr->index_buffer.buffer, NULL);
532 }
533 }
534
535 static void
536 u_vbuf_upload_buffers(struct u_vbuf_priv *mgr,
537 int min_index, int max_index,
538 unsigned instance_count)
539 {
540 unsigned i;
541 unsigned count = max_index + 1 - min_index;
542 unsigned nr_velems = mgr->ve->count;
543 unsigned nr_vbufs = mgr->b.nr_vertex_buffers;
544 struct pipe_vertex_element *velems =
545 mgr->fallback_ve ? mgr->fallback_velems : mgr->ve->ve;
546 unsigned start_offset[PIPE_MAX_ATTRIBS];
547 unsigned end_offset[PIPE_MAX_ATTRIBS] = {0};
548
549 /* Determine how much data needs to be uploaded. */
550 for (i = 0; i < nr_velems; i++) {
551 struct pipe_vertex_element *velem = &velems[i];
552 unsigned index = velem->vertex_buffer_index;
553 struct pipe_vertex_buffer *vb = &mgr->b.vertex_buffer[index];
554 unsigned instance_div, first, size;
555
556 /* Skip the buffer generated by translate. */
557 if (index == mgr->fallback_vb_slot) {
558 continue;
559 }
560
561 assert(vb->buffer);
562
563 if (!u_vbuf_resource(vb->buffer)->user_ptr) {
564 continue;
565 }
566
567 instance_div = velem->instance_divisor;
568 first = vb->buffer_offset + velem->src_offset;
569
570 if (!vb->stride) {
571 /* Constant attrib. */
572 size = mgr->ve->src_format_size[i];
573 } else if (instance_div) {
574 /* Per-instance attrib. */
575 unsigned count = (instance_count + instance_div - 1) / instance_div;
576 size = vb->stride * (count - 1) + mgr->ve->src_format_size[i];
577 } else {
578 /* Per-vertex attrib. */
579 first += vb->stride * min_index;
580 size = vb->stride * (count - 1) + mgr->ve->src_format_size[i];
581 }
582
583 /* Update offsets. */
584 if (!end_offset[index]) {
585 start_offset[index] = first;
586 end_offset[index] = first + size;
587 } else {
588 if (first < start_offset[index])
589 start_offset[index] = first;
590 if (first + size > end_offset[index])
591 end_offset[index] = first + size;
592 }
593 }
594
595 /* Upload buffers. */
596 for (i = 0; i < nr_vbufs; i++) {
597 unsigned start, end = end_offset[i];
598 boolean flushed;
599 struct pipe_vertex_buffer *real_vb;
600 uint8_t *ptr;
601
602 if (!end) {
603 continue;
604 }
605
606 start = start_offset[i];
607 assert(start < end);
608
609 real_vb = &mgr->b.real_vertex_buffer[i];
610 ptr = u_vbuf_resource(mgr->b.vertex_buffer[i].buffer)->user_ptr;
611
612 u_upload_data(mgr->b.uploader, start, end - start, ptr + start,
613 &real_vb->buffer_offset, &real_vb->buffer, &flushed);
614
615 real_vb->buffer_offset -= start;
616 }
617 }
618
619 unsigned u_vbuf_draw_max_vertex_count(struct u_vbuf_mgr *mgrb)
620 {
621 struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb;
622 unsigned i, nr = mgr->ve->count;
623 struct pipe_vertex_element *velems =
624 mgr->fallback_ve ? mgr->fallback_velems : mgr->ve->ve;
625 unsigned result = ~0;
626
627 for (i = 0; i < nr; i++) {
628 struct pipe_vertex_buffer *vb =
629 &mgr->b.real_vertex_buffer[velems[i].vertex_buffer_index];
630 unsigned size, max_count, value;
631
632 /* We're not interested in constant and per-instance attribs. */
633 if (!vb->buffer ||
634 !vb->stride ||
635 velems[i].instance_divisor) {
636 continue;
637 }
638
639 size = vb->buffer->width0;
640
641 /* Subtract buffer_offset. */
642 value = vb->buffer_offset;
643 if (value >= size) {
644 return 0;
645 }
646 size -= value;
647
648 /* Subtract src_offset. */
649 value = velems[i].src_offset;
650 if (value >= size) {
651 return 0;
652 }
653 size -= value;
654
655 /* Subtract format_size. */
656 value = mgr->ve->native_format_size[i];
657 if (value >= size) {
658 return 0;
659 }
660 size -= value;
661
662 /* Compute the max count. */
663 max_count = 1 + size / vb->stride;
664 result = MIN2(result, max_count);
665 }
666 return result;
667 }
668
669 static boolean u_vbuf_need_minmax_index(struct u_vbuf_priv *mgr)
670 {
671 unsigned i, nr = mgr->ve->count;
672
673 for (i = 0; i < nr; i++) {
674 struct pipe_vertex_buffer *vb;
675 unsigned index;
676
677 /* Per-instance attribs don't need min/max_index. */
678 if (mgr->ve->ve[i].instance_divisor) {
679 continue;
680 }
681
682 index = mgr->ve->ve[i].vertex_buffer_index;
683 vb = &mgr->b.vertex_buffer[index];
684
685 /* Constant attribs don't need min/max_index. */
686 if (!vb->stride) {
687 continue;
688 }
689
690 /* Per-vertex attribs need min/max_index. */
691 if (u_vbuf_resource(vb->buffer)->user_ptr ||
692 mgr->ve->incompatible_layout_elem[i] ||
693 mgr->incompatible_vb[index]) {
694 return TRUE;
695 }
696 }
697
698 return FALSE;
699 }
700
701 static void u_vbuf_get_minmax_index(struct pipe_context *pipe,
702 struct pipe_index_buffer *ib,
703 const struct pipe_draw_info *info,
704 int *out_min_index,
705 int *out_max_index)
706 {
707 struct pipe_transfer *transfer = NULL;
708 const void *indices;
709 unsigned i;
710 unsigned restart_index = info->restart_index;
711
712 if (u_vbuf_resource(ib->buffer)->user_ptr) {
713 indices = u_vbuf_resource(ib->buffer)->user_ptr +
714 ib->offset + info->start * ib->index_size;
715 } else {
716 indices = pipe_buffer_map_range(pipe, ib->buffer,
717 ib->offset + info->start * ib->index_size,
718 info->count * ib->index_size,
719 PIPE_TRANSFER_READ, &transfer);
720 }
721
722 switch (ib->index_size) {
723 case 4: {
724 const unsigned *ui_indices = (const unsigned*)indices;
725 unsigned max_ui = 0;
726 unsigned min_ui = ~0U;
727 if (info->primitive_restart) {
728 for (i = 0; i < info->count; i++) {
729 if (ui_indices[i] != restart_index) {
730 if (ui_indices[i] > max_ui) max_ui = ui_indices[i];
731 if (ui_indices[i] < min_ui) min_ui = ui_indices[i];
732 }
733 }
734 }
735 else {
736 for (i = 0; i < info->count; i++) {
737 if (ui_indices[i] > max_ui) max_ui = ui_indices[i];
738 if (ui_indices[i] < min_ui) min_ui = ui_indices[i];
739 }
740 }
741 *out_min_index = min_ui;
742 *out_max_index = max_ui;
743 break;
744 }
745 case 2: {
746 const unsigned short *us_indices = (const unsigned short*)indices;
747 unsigned max_us = 0;
748 unsigned min_us = ~0U;
749 if (info->primitive_restart) {
750 for (i = 0; i < info->count; i++) {
751 if (us_indices[i] != restart_index) {
752 if (us_indices[i] > max_us) max_us = us_indices[i];
753 if (us_indices[i] < min_us) min_us = us_indices[i];
754 }
755 }
756 }
757 else {
758 for (i = 0; i < info->count; i++) {
759 if (us_indices[i] > max_us) max_us = us_indices[i];
760 if (us_indices[i] < min_us) min_us = us_indices[i];
761 }
762 }
763 *out_min_index = min_us;
764 *out_max_index = max_us;
765 break;
766 }
767 case 1: {
768 const unsigned char *ub_indices = (const unsigned char*)indices;
769 unsigned max_ub = 0;
770 unsigned min_ub = ~0U;
771 if (info->primitive_restart) {
772 for (i = 0; i < info->count; i++) {
773 if (ub_indices[i] != restart_index) {
774 if (ub_indices[i] > max_ub) max_ub = ub_indices[i];
775 if (ub_indices[i] < min_ub) min_ub = ub_indices[i];
776 }
777 }
778 }
779 else {
780 for (i = 0; i < info->count; i++) {
781 if (ub_indices[i] > max_ub) max_ub = ub_indices[i];
782 if (ub_indices[i] < min_ub) min_ub = ub_indices[i];
783 }
784 }
785 *out_min_index = min_ub;
786 *out_max_index = max_ub;
787 break;
788 }
789 default:
790 assert(0);
791 }
792
793 if (transfer) {
794 pipe_buffer_unmap(pipe, transfer);
795 }
796 }
797
798 enum u_vbuf_return_flags
799 u_vbuf_draw_begin(struct u_vbuf_mgr *mgrb,
800 const struct pipe_draw_info *info)
801 {
802 struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb;
803 int min_index, max_index;
804
805 if (!mgr->incompatible_vb_layout &&
806 !mgr->ve->incompatible_layout &&
807 !mgr->any_user_vbs) {
808 return 0;
809 }
810
811 if (info->indexed) {
812 if (info->max_index != ~0) {
813 min_index = info->min_index + info->index_bias;
814 max_index = info->max_index + info->index_bias;
815 } else if (u_vbuf_need_minmax_index(mgr)) {
816 u_vbuf_get_minmax_index(mgr->pipe, &mgr->b.index_buffer, info,
817 &min_index, &max_index);
818 min_index += info->index_bias;
819 max_index += info->index_bias;
820 } else {
821 min_index = 0;
822 max_index = 0;
823 }
824 } else {
825 min_index = info->start;
826 max_index = info->start + info->count - 1;
827 }
828
829 /* Translate vertices with non-native layouts or formats. */
830 if (mgr->incompatible_vb_layout || mgr->ve->incompatible_layout) {
831 u_vbuf_translate_begin(mgr, min_index, max_index);
832 }
833
834 /* Upload user buffers. */
835 if (mgr->any_user_vbs) {
836 u_vbuf_upload_buffers(mgr, min_index, max_index, info->instance_count);
837 }
838 return U_VBUF_BUFFERS_UPDATED;
839 }
840
841 void u_vbuf_draw_end(struct u_vbuf_mgr *mgrb)
842 {
843 struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb;
844
845 if (mgr->fallback_ve) {
846 u_vbuf_translate_end(mgr);
847 }
848 }