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revert 213 commits (to 56092) from the last month. 10 still need work to resolve...
[AROS.git] / workbench / libs / mesa / src / gallium / auxiliary / util / u_vbuf_mgr.c
blob19eb689cfb261af7bfad5e0d250be9d2275f90a6
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 unsigned saved_buffer_offset[PIPE_MAX_ATTRIBS];
83
84 boolean any_user_vbs;
85 boolean incompatible_vb_layout;
86 };
87
88 static void u_vbuf_mgr_init_format_caps(struct u_vbuf_mgr_priv *mgr)
89 {
90 struct pipe_screen *screen = mgr->pipe->screen;
91
92 mgr->caps.format_fixed32 =
93 screen->is_format_supported(screen, PIPE_FORMAT_R32_FIXED, PIPE_BUFFER,
94 0, PIPE_BIND_VERTEX_BUFFER);
95
96 mgr->caps.format_float16 =
97 screen->is_format_supported(screen, PIPE_FORMAT_R16_FLOAT, PIPE_BUFFER,
98 0, PIPE_BIND_VERTEX_BUFFER);
99
100 mgr->caps.format_float64 =
101 screen->is_format_supported(screen, PIPE_FORMAT_R64_FLOAT, PIPE_BUFFER,
102 0, PIPE_BIND_VERTEX_BUFFER);
103
104 mgr->caps.format_norm32 =
105 screen->is_format_supported(screen, PIPE_FORMAT_R32_UNORM, PIPE_BUFFER,
106 0, PIPE_BIND_VERTEX_BUFFER) &&
107 screen->is_format_supported(screen, PIPE_FORMAT_R32_SNORM, PIPE_BUFFER,
108 0, PIPE_BIND_VERTEX_BUFFER);
109
110 mgr->caps.format_scaled32 =
111 screen->is_format_supported(screen, PIPE_FORMAT_R32_USCALED, PIPE_BUFFER,
112 0, PIPE_BIND_VERTEX_BUFFER) &&
113 screen->is_format_supported(screen, PIPE_FORMAT_R32_SSCALED, PIPE_BUFFER,
114 0, PIPE_BIND_VERTEX_BUFFER);
115 }
116
117 struct u_vbuf_mgr *
118 u_vbuf_mgr_create(struct pipe_context *pipe,
119 unsigned upload_buffer_size,
120 unsigned upload_buffer_alignment,
121 unsigned upload_buffer_bind,
122 enum u_fetch_alignment fetch_alignment)
123 {
124 struct u_vbuf_mgr_priv *mgr = CALLOC_STRUCT(u_vbuf_mgr_priv);
125
126 mgr->pipe = pipe;
127 mgr->translate_cache = translate_cache_create();
128
129 mgr->b.uploader = u_upload_create(pipe, upload_buffer_size,
130 upload_buffer_alignment,
131 upload_buffer_bind);
132
133 mgr->caps.fetch_dword_unaligned =
134 fetch_alignment == U_VERTEX_FETCH_BYTE_ALIGNED;
135
136 u_vbuf_mgr_init_format_caps(mgr);
137
138 return &mgr->b;
139 }
140
141 void u_vbuf_mgr_destroy(struct u_vbuf_mgr *mgrb)
142 {
143 struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
144 unsigned i;
145
146 for (i = 0; i < mgr->b.nr_real_vertex_buffers; i++) {
147 pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, NULL);
148 pipe_resource_reference(&mgr->b.real_vertex_buffer[i], NULL);
149 }
150
151 translate_cache_destroy(mgr->translate_cache);
152 u_upload_destroy(mgr->b.uploader);
153 FREE(mgr);
154 }
155
156
157 static enum u_vbuf_return_flags
158 u_vbuf_translate_begin(struct u_vbuf_mgr_priv *mgr,
159 int min_index, int max_index)
160 {
161 struct translate_key key;
162 struct translate_element *te;
163 unsigned tr_elem_index[PIPE_MAX_ATTRIBS];
164 struct translate *tr;
165 boolean vb_translated[PIPE_MAX_ATTRIBS] = {0};
166 uint8_t *vb_map[PIPE_MAX_ATTRIBS] = {0}, *out_map;
167 struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {0};
168 struct pipe_resource *out_buffer = NULL;
169 unsigned i, num_verts, out_offset;
170 struct pipe_vertex_element new_velems[PIPE_MAX_ATTRIBS];
171 boolean upload_flushed = FALSE;
172
173 memset(&key, 0, sizeof(key));
174 memset(tr_elem_index, 0xff, sizeof(tr_elem_index));
175
176 /* Initialize the translate key, i.e. the recipe how vertices should be
177 * translated. */
178 memset(&key, 0, sizeof key);
179 for (i = 0; i < mgr->ve->count; i++) {
180 struct pipe_vertex_buffer *vb =
181 &mgr->b.vertex_buffer[mgr->ve->ve[i].vertex_buffer_index];
182 enum pipe_format output_format = mgr->ve->native_format[i];
183 unsigned output_format_size = mgr->ve->native_format_size[i];
184
185 /* Check for support. */
186 if (mgr->ve->ve[i].src_format == mgr->ve->native_format[i] &&
187 (mgr->caps.fetch_dword_unaligned ||
188 (vb->buffer_offset % 4 == 0 &&
189 vb->stride % 4 == 0 &&
190 mgr->ve->ve[i].src_offset % 4 == 0))) {
191 continue;
192 }
193
194 /* Workaround for translate: output floats instead of halfs. */
195 switch (output_format) {
196 case PIPE_FORMAT_R16_FLOAT:
197 output_format = PIPE_FORMAT_R32_FLOAT;
198 output_format_size = 4;
199 break;
200 case PIPE_FORMAT_R16G16_FLOAT:
201 output_format = PIPE_FORMAT_R32G32_FLOAT;
202 output_format_size = 8;
203 break;
204 case PIPE_FORMAT_R16G16B16_FLOAT:
205 output_format = PIPE_FORMAT_R32G32B32_FLOAT;
206 output_format_size = 12;
207 break;
208 case PIPE_FORMAT_R16G16B16A16_FLOAT:
209 output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
210 output_format_size = 16;
211 break;
212 default:;
213 }
214
215 /* Add this vertex element. */
216 te = &key.element[key.nr_elements];
217 /*te->type;
218 te->instance_divisor;*/
219 te->input_buffer = mgr->ve->ve[i].vertex_buffer_index;
220 te->input_format = mgr->ve->ve[i].src_format;
221 te->input_offset = mgr->ve->ve[i].src_offset;
222 te->output_format = output_format;
223 te->output_offset = key.output_stride;
224
225 key.output_stride += output_format_size;
226 vb_translated[mgr->ve->ve[i].vertex_buffer_index] = TRUE;
227 tr_elem_index[i] = key.nr_elements;
228 key.nr_elements++;
229 }
230
231 /* Get a translate object. */
232 tr = translate_cache_find(mgr->translate_cache, &key);
233
234 /* Map buffers we want to translate. */
235 for (i = 0; i < mgr->b.nr_vertex_buffers; i++) {
236 if (vb_translated[i]) {
237 struct pipe_vertex_buffer *vb = &mgr->b.vertex_buffer[i];
238
239 vb_map[i] = pipe_buffer_map(mgr->pipe, vb->buffer,
240 PIPE_TRANSFER_READ, &vb_transfer[i]);
241
242 tr->set_buffer(tr, i,
243 vb_map[i] + vb->buffer_offset + vb->stride * min_index,
244 vb->stride, ~0);
245 }
246 }
247
248 /* Create and map the output buffer. */
249 num_verts = max_index + 1 - min_index;
250
251 u_upload_alloc(mgr->b.uploader,
252 key.output_stride * min_index,
253 key.output_stride * num_verts,
254 &out_offset, &out_buffer, &upload_flushed,
255 (void**)&out_map);
256
257 out_offset -= key.output_stride * min_index;
258
259 /* Translate. */
260 tr->run(tr, 0, num_verts, 0, out_map);
261
262 /* Unmap all buffers. */
263 for (i = 0; i < mgr->b.nr_vertex_buffers; i++) {
264 if (vb_translated[i]) {
265 pipe_buffer_unmap(mgr->pipe, vb_transfer[i]);
266 }
267 }
268
269 /* Setup the new vertex buffer in the first free slot. */
270 mgr->translate_vb_slot = ~0;
271 for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {
272 if (!mgr->b.vertex_buffer[i].buffer) {
273 mgr->translate_vb_slot = i;
274
275 if (i >= mgr->b.nr_vertex_buffers) {
276 mgr->b.nr_real_vertex_buffers = i+1;
277 }
278 break;
279 }
280 }
281
282 if (mgr->translate_vb_slot != ~0) {
283 /* Setup the new vertex buffer. */
284 pipe_resource_reference(
285 &mgr->b.real_vertex_buffer[mgr->translate_vb_slot], out_buffer);
286 mgr->b.vertex_buffer[mgr->translate_vb_slot].buffer_offset = out_offset;
287 mgr->b.vertex_buffer[mgr->translate_vb_slot].stride = key.output_stride;
288
289 /* Setup new vertex elements. */
290 for (i = 0; i < mgr->ve->count; i++) {
291 if (tr_elem_index[i] < key.nr_elements) {
292 te = &key.element[tr_elem_index[i]];
293 new_velems[i].instance_divisor = mgr->ve->ve[i].instance_divisor;
294 new_velems[i].src_format = te->output_format;
295 new_velems[i].src_offset = te->output_offset;
296 new_velems[i].vertex_buffer_index = mgr->translate_vb_slot;
297 } else {
298 memcpy(&new_velems[i], &mgr->ve->ve[i],
299 sizeof(struct pipe_vertex_element));
300 }
301 }
302
303 mgr->fallback_ve =
304 mgr->pipe->create_vertex_elements_state(mgr->pipe, mgr->ve->count,
305 new_velems);
306
307 /* Preserve saved_ve. */
308 mgr->ve_binding_lock = TRUE;
309 mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->fallback_ve);
310 mgr->ve_binding_lock = FALSE;
311 }
312
313 pipe_resource_reference(&out_buffer, NULL);
314
315 return upload_flushed ? U_VBUF_UPLOAD_FLUSHED : 0;
316 }
317
318 static void u_vbuf_translate_end(struct u_vbuf_mgr_priv *mgr)
319 {
320 if (mgr->fallback_ve == NULL) {
321 return;
322 }
323
324 /* Restore vertex elements. */
325 /* Note that saved_ve will be overwritten in bind_vertex_elements_state. */
326 mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->saved_ve);
327 mgr->pipe->delete_vertex_elements_state(mgr->pipe, mgr->fallback_ve);
328 mgr->fallback_ve = NULL;
329
330 /* Delete the now-unused VBO. */
331 pipe_resource_reference(&mgr->b.real_vertex_buffer[mgr->translate_vb_slot],
332 NULL);
333 mgr->b.nr_real_vertex_buffers = mgr->b.nr_vertex_buffers;
334 }
335
336 #define FORMAT_REPLACE(what, withwhat) \
337 case PIPE_FORMAT_##what: format = PIPE_FORMAT_##withwhat; break
338
339 struct u_vbuf_mgr_elements *
340 u_vbuf_mgr_create_vertex_elements(struct u_vbuf_mgr *mgrb,
341 unsigned count,
342 const struct pipe_vertex_element *attribs,
343 struct pipe_vertex_element *native_attribs)
344 {
345 struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
346 unsigned i;
347 struct u_vbuf_mgr_elements *ve = CALLOC_STRUCT(u_vbuf_mgr_elements);
348
349 ve->count = count;
350
351 if (!count) {
352 return ve;
353 }
354
355 memcpy(ve->ve, attribs, sizeof(struct pipe_vertex_element) * count);
356 memcpy(native_attribs, attribs, sizeof(struct pipe_vertex_element) * count);
357
358 /* Set the best native format in case the original format is not
359 * supported. */
360 for (i = 0; i < count; i++) {
361 enum pipe_format format = ve->ve[i].src_format;
362
363 ve->src_format_size[i] = util_format_get_blocksize(format);
364
365 /* Choose a native format.
366 * For now we don't care about the alignment, that's going to
367 * be sorted out later. */
368 if (!mgr->caps.format_fixed32) {
369 switch (format) {
370 FORMAT_REPLACE(R32_FIXED, R32_FLOAT);
371 FORMAT_REPLACE(R32G32_FIXED, R32G32_FLOAT);
372 FORMAT_REPLACE(R32G32B32_FIXED, R32G32B32_FLOAT);
373 FORMAT_REPLACE(R32G32B32A32_FIXED, R32G32B32A32_FLOAT);
374 default:;
375 }
376 }
377 if (!mgr->caps.format_float16) {
378 switch (format) {
379 FORMAT_REPLACE(R16_FLOAT, R32_FLOAT);
380 FORMAT_REPLACE(R16G16_FLOAT, R32G32_FLOAT);
381 FORMAT_REPLACE(R16G16B16_FLOAT, R32G32B32_FLOAT);
382 FORMAT_REPLACE(R16G16B16A16_FLOAT, R32G32B32A32_FLOAT);
383 default:;
384 }
385 }
386 if (!mgr->caps.format_float64) {
387 switch (format) {
388 FORMAT_REPLACE(R64_FLOAT, R32_FLOAT);
389 FORMAT_REPLACE(R64G64_FLOAT, R32G32_FLOAT);
390 FORMAT_REPLACE(R64G64B64_FLOAT, R32G32B32_FLOAT);
391 FORMAT_REPLACE(R64G64B64A64_FLOAT, R32G32B32A32_FLOAT);
392 default:;
393 }
394 }
395 if (!mgr->caps.format_norm32) {
396 switch (format) {
397 FORMAT_REPLACE(R32_UNORM, R32_FLOAT);
398 FORMAT_REPLACE(R32G32_UNORM, R32G32_FLOAT);
399 FORMAT_REPLACE(R32G32B32_UNORM, R32G32B32_FLOAT);
400 FORMAT_REPLACE(R32G32B32A32_UNORM, R32G32B32A32_FLOAT);
401 FORMAT_REPLACE(R32_SNORM, R32_FLOAT);
402 FORMAT_REPLACE(R32G32_SNORM, R32G32_FLOAT);
403 FORMAT_REPLACE(R32G32B32_SNORM, R32G32B32_FLOAT);
404 FORMAT_REPLACE(R32G32B32A32_SNORM, R32G32B32A32_FLOAT);
405 default:;
406 }
407 }
408 if (!mgr->caps.format_scaled32) {
409 switch (format) {
410 FORMAT_REPLACE(R32_USCALED, R32_FLOAT);
411 FORMAT_REPLACE(R32G32_USCALED, R32G32_FLOAT);
412 FORMAT_REPLACE(R32G32B32_USCALED, R32G32B32_FLOAT);
413 FORMAT_REPLACE(R32G32B32A32_USCALED,R32G32B32A32_FLOAT);
414 FORMAT_REPLACE(R32_SSCALED, R32_FLOAT);
415 FORMAT_REPLACE(R32G32_SSCALED, R32G32_FLOAT);
416 FORMAT_REPLACE(R32G32B32_SSCALED, R32G32B32_FLOAT);
417 FORMAT_REPLACE(R32G32B32A32_SSCALED,R32G32B32A32_FLOAT);
418 default:;
419 }
420 }
421
422 native_attribs[i].src_format = format;
423 ve->native_format[i] = format;
424 ve->native_format_size[i] =
425 util_format_get_blocksize(ve->native_format[i]);
426
427 ve->incompatible_layout =
428 ve->incompatible_layout ||
429 ve->ve[i].src_format != ve->native_format[i] ||
430 (!mgr->caps.fetch_dword_unaligned && ve->ve[i].src_offset % 4 != 0);
431 }
432
433 /* Align the formats to the size of DWORD if needed. */
434 if (!mgr->caps.fetch_dword_unaligned) {
435 for (i = 0; i < count; i++) {
436 ve->native_format_size[i] = align(ve->native_format_size[i], 4);
437 }
438 }
439
440 return ve;
441 }
442
443 void u_vbuf_mgr_bind_vertex_elements(struct u_vbuf_mgr *mgrb,
444 void *cso,
445 struct u_vbuf_mgr_elements *ve)
446 {
447 struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
448
449 if (!cso) {
450 return;
451 }
452
453 if (!mgr->ve_binding_lock) {
454 mgr->saved_ve = cso;
455 mgr->ve = ve;
456 }
457 }
458
459 void u_vbuf_mgr_destroy_vertex_elements(struct u_vbuf_mgr *mgr,
460 struct u_vbuf_mgr_elements *ve)
461 {
462 FREE(ve);
463 }
464
465 void u_vbuf_mgr_set_vertex_buffers(struct u_vbuf_mgr *mgrb,
466 unsigned count,
467 const struct pipe_vertex_buffer *bufs)
468 {
469 struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
470 unsigned i;
471
472 mgr->any_user_vbs = FALSE;
473 mgr->incompatible_vb_layout = FALSE;
474
475 if (!mgr->caps.fetch_dword_unaligned) {
476 /* Check if the strides and offsets are aligned to the size of DWORD. */
477 for (i = 0; i < count; i++) {
478 if (bufs[i].buffer) {
479 if (bufs[i].stride % 4 != 0 ||
480 bufs[i].buffer_offset % 4 != 0) {
481 mgr->incompatible_vb_layout = TRUE;
482 break;
483 }
484 }
485 }
486 }
487
488 for (i = 0; i < count; i++) {
489 const struct pipe_vertex_buffer *vb = &bufs[i];
490
491 pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, vb->buffer);
492 pipe_resource_reference(&mgr->b.real_vertex_buffer[i], NULL);
493 mgr->saved_buffer_offset[i] = vb->buffer_offset;
494
495 if (!vb->buffer) {
496 continue;
497 }
498
499 if (u_vbuf_resource(vb->buffer)->user_ptr) {
500 mgr->any_user_vbs = TRUE;
501 continue;
502 }
503
504 pipe_resource_reference(&mgr->b.real_vertex_buffer[i], vb->buffer);
505 }
506
507 for (; i < mgr->b.nr_real_vertex_buffers; i++) {
508 pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, NULL);
509 pipe_resource_reference(&mgr->b.real_vertex_buffer[i], NULL);
510 }
511
512 memcpy(mgr->b.vertex_buffer, bufs,
513 sizeof(struct pipe_vertex_buffer) * count);
514
515 mgr->b.nr_vertex_buffers = count;
516 mgr->b.nr_real_vertex_buffers = count;
517 }
518
519 static enum u_vbuf_return_flags
520 u_vbuf_upload_buffers(struct u_vbuf_mgr_priv *mgr,
521 int min_index, int max_index,
522 unsigned instance_count)
523 {
524 unsigned i, nr = mgr->ve->count;
525 unsigned count = max_index + 1 - min_index;
526 boolean uploaded[PIPE_MAX_ATTRIBS] = {0};
527 enum u_vbuf_return_flags retval = 0;
528
529 for (i = 0; i < nr; i++) {
530 unsigned index = mgr->ve->ve[i].vertex_buffer_index;
531 struct pipe_vertex_buffer *vb = &mgr->b.vertex_buffer[index];
532
533 if (vb->buffer &&
534 u_vbuf_resource(vb->buffer)->user_ptr &&
535 !uploaded[index]) {
536 unsigned first, size;
537 boolean flushed;
538 unsigned instance_div = mgr->ve->ve[i].instance_divisor;
539
540 if (instance_div) {
541 first = 0;
542 size = vb->stride *
543 ((instance_count + instance_div - 1) / instance_div);
544 } else if (vb->stride) {
545 first = vb->stride * min_index;
546 size = vb->stride * count;
547
548 /* Unusual case when stride is smaller than the format size.
549 * XXX This won't work with interleaved arrays. */
550 if (mgr->ve->native_format_size[i] > vb->stride)
551 size += mgr->ve->native_format_size[i] - vb->stride;
552 } else {
553 first = 0;
554 size = mgr->ve->native_format_size[i];
555 }
556
557 u_upload_data(mgr->b.uploader, first, size,
558 u_vbuf_resource(vb->buffer)->user_ptr + first,
559 &vb->buffer_offset,
560 &mgr->b.real_vertex_buffer[index],
561 &flushed);
562
563 vb->buffer_offset -= first;
564
565 uploaded[index] = TRUE;
566 if (flushed)
567 retval |= U_VBUF_UPLOAD_FLUSHED;
568 } else {
569 assert(mgr->b.real_vertex_buffer[index]);
570 }
571 }
572
573 return retval;
574 }
575
576 static void u_vbuf_mgr_compute_max_index(struct u_vbuf_mgr_priv *mgr)
577 {
578 unsigned i, nr = mgr->ve->count;
579
580 mgr->b.max_index = ~0;
581
582 for (i = 0; i < nr; i++) {
583 struct pipe_vertex_buffer *vb =
584 &mgr->b.vertex_buffer[mgr->ve->ve[i].vertex_buffer_index];
585 int unused;
586 unsigned max_index;
587
588 if (!vb->buffer ||
589 !vb->stride ||
590 u_vbuf_resource(vb->buffer)->user_ptr) {
591 continue;
592 }
593
594 /* How many bytes is unused after the last vertex.
595 * width0 may be "count*stride - unused" and we have to compensate
596 * for that when dividing by stride. */
597 unused = vb->stride -
598 (mgr->ve->ve[i].src_offset + mgr->ve->src_format_size[i]);
599
600 /* If src_offset is greater than stride (which means it's a buffer
601 * offset rather than a vertex offset)... */
602 if (unused < 0) {
603 unused = 0;
604 }
605
606 /* Compute the maximum index for this vertex element. */
607 max_index =
608 (vb->buffer->width0 - vb->buffer_offset + (unsigned)unused) /
609 vb->stride - 1;
610
611 mgr->b.max_index = MIN2(mgr->b.max_index, max_index);
612 }
613 }
614
615 enum u_vbuf_return_flags
616 u_vbuf_mgr_draw_begin(struct u_vbuf_mgr *mgrb,
617 const struct pipe_draw_info *info)
618 {
619 struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
620 int min_index, max_index;
621 enum u_vbuf_return_flags retval = 0;
622
623 u_vbuf_mgr_compute_max_index(mgr);
624
625 min_index = info->min_index - info->index_bias;
626 if (info->max_index == ~0) {
627 max_index = mgr->b.max_index;
628 } else {
629 max_index = MIN2(info->max_index - info->index_bias, mgr->b.max_index);
630 }
631
632 /* Translate vertices with non-native layouts or formats. */
633 if (mgr->incompatible_vb_layout || mgr->ve->incompatible_layout) {
634 retval |= u_vbuf_translate_begin(mgr, min_index, max_index);
635
636 if (mgr->fallback_ve) {
637 retval |= U_VBUF_BUFFERS_UPDATED;
638 }
639 }
640
641 /* Upload user buffers. */
642 if (mgr->any_user_vbs) {
643 retval |= u_vbuf_upload_buffers(mgr, min_index, max_index,
644 info->instance_count);
645 retval |= U_VBUF_BUFFERS_UPDATED;
646 }
647 return retval;
648 }
649
650 void u_vbuf_mgr_draw_end(struct u_vbuf_mgr *mgrb)
651 {
652 struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
653 unsigned i;
654
655 /* buffer offsets were modified in u_vbuf_upload_buffers */
656 if (mgr->any_user_vbs) {
657 for (i = 0; i < mgr->b.nr_vertex_buffers; i++)
658 mgr->b.vertex_buffer[i].buffer_offset = mgr->saved_buffer_offset[i];
659 }
660
661 if (mgr->fallback_ve) {
662 u_vbuf_translate_end(mgr);
663 }
664 }
Mirror of AROS' svn.