u_vbuf.c revision f430f794ace50022b1b81408a3721b8e0b2519bb
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_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 37struct 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 57struct u_vbuf_priv { 58 struct u_vbuf 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 87static 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 116struct u_vbuf * 117u_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 141void u_vbuf_destroy(struct u_vbuf *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 159static unsigned u_vbuf_get_free_real_vb_slot(struct u_vbuf_priv *mgr) 160{ 161 unsigned i, nr = mgr->ve->count; 162 boolean used_vb[PIPE_MAX_ATTRIBS] = {0}; 163 164 for (i = 0; i < nr; i++) { 165 if (!mgr->ve->incompatible_layout_elem[i]) { 166 unsigned index = mgr->ve->ve[i].vertex_buffer_index; 167 168 if (!mgr->incompatible_vb[index]) { 169 used_vb[index] = TRUE; 170 } 171 } 172 } 173 174 for (i = 0; i < PIPE_MAX_ATTRIBS; i++) { 175 if (!used_vb[i]) { 176 if (i >= mgr->b.nr_real_vertex_buffers) { 177 mgr->b.nr_real_vertex_buffers = i+1; 178 } 179 return i; 180 } 181 } 182 return ~0; 183} 184 185static void 186u_vbuf_translate_begin(struct u_vbuf_priv *mgr, 187 int min_index, int max_index) 188{ 189 struct translate_key key; 190 struct translate_element *te; 191 unsigned tr_elem_index[PIPE_MAX_ATTRIBS]; 192 struct translate *tr; 193 boolean vb_translated[PIPE_MAX_ATTRIBS] = {0}; 194 uint8_t *out_map; 195 struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {0}; 196 struct pipe_resource *out_buffer = NULL; 197 unsigned i, out_offset, num_verts = max_index + 1 - min_index; 198 boolean upload_flushed = FALSE; 199 200 memset(&key, 0, sizeof(key)); 201 memset(tr_elem_index, 0xff, sizeof(tr_elem_index)); 202 203 /* Get a new vertex buffer slot. */ 204 mgr->fallback_vb_slot = u_vbuf_get_free_real_vb_slot(mgr); 205 206 if (mgr->fallback_vb_slot == ~0) { 207 return; /* XXX error, not enough attribs */ 208 } 209 210 /* Initialize the description of how vertices should be translated. */ 211 for (i = 0; i < mgr->ve->count; i++) { 212 enum pipe_format output_format = mgr->ve->native_format[i]; 213 unsigned output_format_size = mgr->ve->native_format_size[i]; 214 215 /* Check for support. */ 216 if (!mgr->ve->incompatible_layout_elem[i] && 217 !mgr->incompatible_vb[mgr->ve->ve[i].vertex_buffer_index]) { 218 continue; 219 } 220 221 assert(translate_is_output_format_supported(output_format)); 222 223 /* Add this vertex element. */ 224 te = &key.element[key.nr_elements]; 225 te->type = TRANSLATE_ELEMENT_NORMAL; 226 te->instance_divisor = 0; 227 te->input_buffer = mgr->ve->ve[i].vertex_buffer_index; 228 te->input_format = mgr->ve->ve[i].src_format; 229 te->input_offset = mgr->ve->ve[i].src_offset; 230 te->output_format = output_format; 231 te->output_offset = key.output_stride; 232 233 key.output_stride += output_format_size; 234 vb_translated[mgr->ve->ve[i].vertex_buffer_index] = TRUE; 235 tr_elem_index[i] = key.nr_elements; 236 key.nr_elements++; 237 } 238 239 /* Get a translate object. */ 240 tr = translate_cache_find(mgr->translate_cache, &key); 241 242 /* Map buffers we want to translate. */ 243 for (i = 0; i < mgr->b.nr_vertex_buffers; i++) { 244 if (vb_translated[i]) { 245 struct pipe_vertex_buffer *vb = &mgr->b.vertex_buffer[i]; 246 247 uint8_t *map = 248 pipe_buffer_map_range(mgr->pipe, vb->buffer, 249 vb->buffer_offset + vb->stride * min_index, 250 num_verts * vb->stride, 251 PIPE_TRANSFER_READ, &vb_transfer[i]); 252 253 tr->set_buffer(tr, i, map, vb->stride, ~0); 254 } 255 } 256 257 /* Create and map the output buffer. */ 258 u_upload_alloc(mgr->b.uploader, 259 key.output_stride * min_index, 260 key.output_stride * num_verts, 261 &out_offset, &out_buffer, &upload_flushed, 262 (void**)&out_map); 263 264 out_offset -= key.output_stride * min_index; 265 266 /* Translate. */ 267 tr->run(tr, 0, num_verts, 0, out_map); 268 269 /* Unmap all buffers. */ 270 for (i = 0; i < mgr->b.nr_vertex_buffers; i++) { 271 if (vb_transfer[i]) { 272 pipe_buffer_unmap(mgr->pipe, vb_transfer[i]); 273 } 274 } 275 276 /* Setup the new vertex buffer. */ 277 mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].buffer_offset = out_offset; 278 mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].stride = key.output_stride; 279 280 /* Move the buffer reference. */ 281 pipe_resource_reference( 282 &mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].buffer, NULL); 283 mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].buffer = out_buffer; 284 out_buffer = NULL; 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 mgr->fallback_velems[i].instance_divisor = mgr->ve->ve[i].instance_divisor; 291 mgr->fallback_velems[i].src_format = te->output_format; 292 mgr->fallback_velems[i].src_offset = te->output_offset; 293 mgr->fallback_velems[i].vertex_buffer_index = mgr->fallback_vb_slot; 294 } else { 295 memcpy(&mgr->fallback_velems[i], &mgr->ve->ve[i], 296 sizeof(struct pipe_vertex_element)); 297 } 298 } 299 300 301 mgr->fallback_ve = 302 mgr->pipe->create_vertex_elements_state(mgr->pipe, mgr->ve->count, 303 mgr->fallback_velems); 304 305 /* Preserve saved_ve. */ 306 mgr->ve_binding_lock = TRUE; 307 mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->fallback_ve); 308 mgr->ve_binding_lock = FALSE; 309} 310 311static void u_vbuf_translate_end(struct u_vbuf_priv *mgr) 312{ 313 if (mgr->fallback_ve == NULL) { 314 return; 315 } 316 317 /* Restore vertex elements. */ 318 /* Note that saved_ve will be overwritten in bind_vertex_elements_state. */ 319 mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->saved_ve); 320 mgr->pipe->delete_vertex_elements_state(mgr->pipe, mgr->fallback_ve); 321 mgr->fallback_ve = NULL; 322 323 /* Delete the now-unused VBO. */ 324 pipe_resource_reference(&mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].buffer, 325 NULL); 326 mgr->fallback_vb_slot = ~0; 327 mgr->b.nr_real_vertex_buffers = mgr->b.nr_vertex_buffers; 328} 329 330#define FORMAT_REPLACE(what, withwhat) \ 331 case PIPE_FORMAT_##what: format = PIPE_FORMAT_##withwhat; break 332 333struct u_vbuf_elements * 334u_vbuf_create_vertex_elements(struct u_vbuf *mgrb, 335 unsigned count, 336 const struct pipe_vertex_element *attribs, 337 struct pipe_vertex_element *native_attribs) 338{ 339 struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb; 340 unsigned i; 341 struct u_vbuf_elements *ve = CALLOC_STRUCT(u_vbuf_elements); 342 343 ve->count = count; 344 345 if (!count) { 346 return ve; 347 } 348 349 memcpy(ve->ve, attribs, sizeof(struct pipe_vertex_element) * count); 350 memcpy(native_attribs, attribs, sizeof(struct pipe_vertex_element) * count); 351 352 /* Set the best native format in case the original format is not 353 * supported. */ 354 for (i = 0; i < count; i++) { 355 enum pipe_format format = ve->ve[i].src_format; 356 357 ve->src_format_size[i] = util_format_get_blocksize(format); 358 359 /* Choose a native format. 360 * For now we don't care about the alignment, that's going to 361 * be sorted out later. */ 362 if (!mgr->b.caps.format_fixed32) { 363 switch (format) { 364 FORMAT_REPLACE(R32_FIXED, R32_FLOAT); 365 FORMAT_REPLACE(R32G32_FIXED, R32G32_FLOAT); 366 FORMAT_REPLACE(R32G32B32_FIXED, R32G32B32_FLOAT); 367 FORMAT_REPLACE(R32G32B32A32_FIXED, R32G32B32A32_FLOAT); 368 default:; 369 } 370 } 371 if (!mgr->b.caps.format_float16) { 372 switch (format) { 373 FORMAT_REPLACE(R16_FLOAT, R32_FLOAT); 374 FORMAT_REPLACE(R16G16_FLOAT, R32G32_FLOAT); 375 FORMAT_REPLACE(R16G16B16_FLOAT, R32G32B32_FLOAT); 376 FORMAT_REPLACE(R16G16B16A16_FLOAT, R32G32B32A32_FLOAT); 377 default:; 378 } 379 } 380 if (!mgr->b.caps.format_float64) { 381 switch (format) { 382 FORMAT_REPLACE(R64_FLOAT, R32_FLOAT); 383 FORMAT_REPLACE(R64G64_FLOAT, R32G32_FLOAT); 384 FORMAT_REPLACE(R64G64B64_FLOAT, R32G32B32_FLOAT); 385 FORMAT_REPLACE(R64G64B64A64_FLOAT, R32G32B32A32_FLOAT); 386 default:; 387 } 388 } 389 if (!mgr->b.caps.format_norm32) { 390 switch (format) { 391 FORMAT_REPLACE(R32_UNORM, R32_FLOAT); 392 FORMAT_REPLACE(R32G32_UNORM, R32G32_FLOAT); 393 FORMAT_REPLACE(R32G32B32_UNORM, R32G32B32_FLOAT); 394 FORMAT_REPLACE(R32G32B32A32_UNORM, R32G32B32A32_FLOAT); 395 FORMAT_REPLACE(R32_SNORM, R32_FLOAT); 396 FORMAT_REPLACE(R32G32_SNORM, R32G32_FLOAT); 397 FORMAT_REPLACE(R32G32B32_SNORM, R32G32B32_FLOAT); 398 FORMAT_REPLACE(R32G32B32A32_SNORM, R32G32B32A32_FLOAT); 399 default:; 400 } 401 } 402 if (!mgr->b.caps.format_scaled32) { 403 switch (format) { 404 FORMAT_REPLACE(R32_USCALED, R32_FLOAT); 405 FORMAT_REPLACE(R32G32_USCALED, R32G32_FLOAT); 406 FORMAT_REPLACE(R32G32B32_USCALED, R32G32B32_FLOAT); 407 FORMAT_REPLACE(R32G32B32A32_USCALED,R32G32B32A32_FLOAT); 408 FORMAT_REPLACE(R32_SSCALED, R32_FLOAT); 409 FORMAT_REPLACE(R32G32_SSCALED, R32G32_FLOAT); 410 FORMAT_REPLACE(R32G32B32_SSCALED, R32G32B32_FLOAT); 411 FORMAT_REPLACE(R32G32B32A32_SSCALED,R32G32B32A32_FLOAT); 412 default:; 413 } 414 } 415 416 native_attribs[i].src_format = format; 417 ve->native_format[i] = format; 418 ve->native_format_size[i] = 419 util_format_get_blocksize(ve->native_format[i]); 420 421 ve->incompatible_layout_elem[i] = 422 ve->ve[i].src_format != ve->native_format[i] || 423 (!mgr->b.caps.fetch_dword_unaligned && ve->ve[i].src_offset % 4 != 0); 424 ve->incompatible_layout = 425 ve->incompatible_layout || 426 ve->incompatible_layout_elem[i]; 427 } 428 429 /* Align the formats to the size of DWORD if needed. */ 430 if (!mgr->b.caps.fetch_dword_unaligned) { 431 for (i = 0; i < count; i++) { 432 ve->native_format_size[i] = align(ve->native_format_size[i], 4); 433 } 434 } 435 436 return ve; 437} 438 439void u_vbuf_bind_vertex_elements(struct u_vbuf *mgrb, 440 void *cso, 441 struct u_vbuf_elements *ve) 442{ 443 struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb; 444 445 if (!cso) { 446 return; 447 } 448 449 if (!mgr->ve_binding_lock) { 450 mgr->saved_ve = cso; 451 mgr->ve = ve; 452 } 453} 454 455void u_vbuf_destroy_vertex_elements(struct u_vbuf *mgr, 456 struct u_vbuf_elements *ve) 457{ 458 FREE(ve); 459} 460 461void u_vbuf_set_vertex_buffers(struct u_vbuf *mgrb, 462 unsigned count, 463 const struct pipe_vertex_buffer *bufs) 464{ 465 struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb; 466 unsigned i; 467 468 mgr->any_user_vbs = FALSE; 469 mgr->incompatible_vb_layout = FALSE; 470 memset(mgr->incompatible_vb, 0, sizeof(mgr->incompatible_vb)); 471 472 if (!mgr->b.caps.fetch_dword_unaligned) { 473 /* Check if the strides and offsets are aligned to the size of DWORD. */ 474 for (i = 0; i < count; i++) { 475 if (bufs[i].buffer) { 476 if (bufs[i].stride % 4 != 0 || 477 bufs[i].buffer_offset % 4 != 0) { 478 mgr->incompatible_vb_layout = TRUE; 479 mgr->incompatible_vb[i] = TRUE; 480 } 481 } 482 } 483 } 484 485 for (i = 0; i < count; i++) { 486 const struct pipe_vertex_buffer *vb = &bufs[i]; 487 488 pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, vb->buffer); 489 490 mgr->b.real_vertex_buffer[i].buffer_offset = 491 mgr->b.vertex_buffer[i].buffer_offset = vb->buffer_offset; 492 493 mgr->b.real_vertex_buffer[i].stride = 494 mgr->b.vertex_buffer[i].stride = vb->stride; 495 496 if (!vb->buffer || 497 mgr->incompatible_vb[i]) { 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 522void u_vbuf_set_index_buffer(struct u_vbuf *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 535static void 536u_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 619unsigned u_vbuf_draw_max_vertex_count(struct u_vbuf *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 669static 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 701static 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 *out_min_index = 0; 792 *out_max_index = 0; 793 } 794 795 if (transfer) { 796 pipe_buffer_unmap(pipe, transfer); 797 } 798} 799 800enum u_vbuf_return_flags 801u_vbuf_draw_begin(struct u_vbuf *mgrb, 802 const struct pipe_draw_info *info) 803{ 804 struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb; 805 int min_index, max_index; 806 807 if (!mgr->incompatible_vb_layout && 808 !mgr->ve->incompatible_layout && 809 !mgr->any_user_vbs) { 810 return 0; 811 } 812 813 if (info->indexed) { 814 if (info->max_index != ~0) { 815 min_index = info->min_index + info->index_bias; 816 max_index = info->max_index + info->index_bias; 817 } else if (u_vbuf_need_minmax_index(mgr)) { 818 u_vbuf_get_minmax_index(mgr->pipe, &mgr->b.index_buffer, info, 819 &min_index, &max_index); 820 min_index += info->index_bias; 821 max_index += info->index_bias; 822 } else { 823 min_index = 0; 824 max_index = 0; 825 } 826 } else { 827 min_index = info->start; 828 max_index = info->start + info->count - 1; 829 } 830 831 /* Translate vertices with non-native layouts or formats. */ 832 if (mgr->incompatible_vb_layout || mgr->ve->incompatible_layout) { 833 u_vbuf_translate_begin(mgr, min_index, max_index); 834 } 835 836 /* Upload user buffers. */ 837 if (mgr->any_user_vbs) { 838 u_vbuf_upload_buffers(mgr, min_index, max_index, info->instance_count); 839 } 840 return U_VBUF_BUFFERS_UPDATED; 841} 842 843void u_vbuf_draw_end(struct u_vbuf *mgrb) 844{ 845 struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb; 846 847 if (mgr->fallback_ve) { 848 u_vbuf_translate_end(mgr); 849 } 850} 851