r300_render.c revision eb7ef433bbbeabda963e74adf0ef61c47883f292
1/* 2 * Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com> 3 * Copyright 2010 Marek Olšák <maraeo@gmail.com> 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * on the rights to use, copy, modify, merge, publish, distribute, sub 9 * license, and/or sell copies of the Software, and to permit persons to whom 10 * the Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the next 13 * paragraph) shall be included in all copies or substantial portions of the 14 * Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 22 * USE OR OTHER DEALINGS IN THE SOFTWARE. */ 23 24/* r300_render: Vertex and index buffer primitive emission. Contains both 25 * HW TCL fastpath rendering, and SW TCL Draw-assisted rendering. */ 26 27#include "draw/draw_context.h" 28#include "draw/draw_vbuf.h" 29 30#include "util/u_inlines.h" 31 32#include "util/u_format.h" 33#include "util/u_memory.h" 34#include "util/u_upload_mgr.h" 35#include "util/u_prim.h" 36 37#include "r300_cs.h" 38#include "r300_cb.h" 39#include "r300_context.h" 40#include "r300_screen_buffer.h" 41#include "r300_emit.h" 42#include "r300_reg.h" 43#include "r300_state_derived.h" 44 45#include <limits.h> 46 47#define IMMD_DWORDS 32 48 49static uint32_t r300_translate_primitive(unsigned prim) 50{ 51 switch (prim) { 52 case PIPE_PRIM_POINTS: 53 return R300_VAP_VF_CNTL__PRIM_POINTS; 54 case PIPE_PRIM_LINES: 55 return R300_VAP_VF_CNTL__PRIM_LINES; 56 case PIPE_PRIM_LINE_LOOP: 57 return R300_VAP_VF_CNTL__PRIM_LINE_LOOP; 58 case PIPE_PRIM_LINE_STRIP: 59 return R300_VAP_VF_CNTL__PRIM_LINE_STRIP; 60 case PIPE_PRIM_TRIANGLES: 61 return R300_VAP_VF_CNTL__PRIM_TRIANGLES; 62 case PIPE_PRIM_TRIANGLE_STRIP: 63 return R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP; 64 case PIPE_PRIM_TRIANGLE_FAN: 65 return R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN; 66 case PIPE_PRIM_QUADS: 67 return R300_VAP_VF_CNTL__PRIM_QUADS; 68 case PIPE_PRIM_QUAD_STRIP: 69 return R300_VAP_VF_CNTL__PRIM_QUAD_STRIP; 70 case PIPE_PRIM_POLYGON: 71 return R300_VAP_VF_CNTL__PRIM_POLYGON; 72 default: 73 return 0; 74 } 75} 76 77static uint32_t r300_provoking_vertex_fixes(struct r300_context *r300, 78 unsigned mode) 79{ 80 struct r300_rs_state* rs = (struct r300_rs_state*)r300->rs_state.state; 81 uint32_t color_control = rs->color_control; 82 83 /* By default (see r300_state.c:r300_create_rs_state) color_control is 84 * initialized to provoking the first vertex. 85 * 86 * Triangle fans must be reduced to the second vertex, not the first, in 87 * Gallium flatshade-first mode, as per the GL spec. 88 * (http://www.opengl.org/registry/specs/ARB/provoking_vertex.txt) 89 * 90 * Quads never provoke correctly in flatshade-first mode. The first 91 * vertex is never considered as provoking, so only the second, third, 92 * and fourth vertices can be selected, and both "third" and "last" modes 93 * select the fourth vertex. This is probably due to D3D lacking quads. 94 * 95 * Similarly, polygons reduce to the first, not the last, vertex, when in 96 * "last" mode, and all other modes start from the second vertex. 97 * 98 * ~ C. 99 */ 100 101 if (rs->rs.flatshade_first) { 102 switch (mode) { 103 case PIPE_PRIM_TRIANGLE_FAN: 104 color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_SECOND; 105 break; 106 case PIPE_PRIM_QUADS: 107 case PIPE_PRIM_QUAD_STRIP: 108 case PIPE_PRIM_POLYGON: 109 color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST; 110 break; 111 default: 112 color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_FIRST; 113 break; 114 } 115 } else { 116 color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST; 117 } 118 119 return color_control; 120} 121 122static boolean index_bias_supported(struct r300_context *r300) 123{ 124 return r300->screen->caps.is_r500 && 125 r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0); 126} 127 128static void r500_emit_index_bias(struct r300_context *r300, int index_bias) 129{ 130 CS_LOCALS(r300); 131 132 BEGIN_CS(2); 133 OUT_CS_REG(R500_VAP_INDEX_OFFSET, 134 (index_bias & 0xFFFFFF) | (index_bias < 0 ? 1<<24 : 0)); 135 END_CS; 136} 137 138/* This function splits the index bias value into two parts: 139 * - buffer_offset: the value that can be safely added to buffer offsets 140 * in r300_emit_aos (it must yield a positive offset when added to 141 * a vertex buffer offset) 142 * - index_offset: the value that must be manually subtracted from indices 143 * in an index buffer to achieve negative offsets. */ 144static void r300_split_index_bias(struct r300_context *r300, int index_bias, 145 int *buffer_offset, int *index_offset) 146{ 147 struct pipe_vertex_buffer *vb, *vbufs = r300->vertex_buffer; 148 struct pipe_vertex_element *velem = r300->velems->velem; 149 unsigned i, size; 150 int max_neg_bias; 151 152 if (index_bias < 0) { 153 /* See how large index bias we may subtract. We must be careful 154 * here because negative buffer offsets are not allowed 155 * by the DRM API. */ 156 max_neg_bias = INT_MAX; 157 for (i = 0; i < r300->velems->count; i++) { 158 vb = &vbufs[velem[i].vertex_buffer_index]; 159 size = (vb->buffer_offset + velem[i].src_offset) / vb->stride; 160 max_neg_bias = MIN2(max_neg_bias, size); 161 } 162 163 /* Now set the minimum allowed value. */ 164 *buffer_offset = MAX2(-max_neg_bias, index_bias); 165 } else { 166 /* A positive index bias is OK. */ 167 *buffer_offset = index_bias; 168 } 169 170 *index_offset = index_bias - *buffer_offset; 171} 172 173enum r300_prepare_flags { 174 PREP_FIRST_DRAW = (1 << 0), /* call emit_dirty_state and friends? */ 175 PREP_VALIDATE_VBOS = (1 << 1), /* validate VBOs? */ 176 PREP_EMIT_AOS = (1 << 2), /* call emit_aos? */ 177 PREP_EMIT_AOS_SWTCL = (1 << 3), /* call emit_aos_swtcl? */ 178 PREP_INDEXED = (1 << 4) /* is this draw_elements? */ 179}; 180 181/** 182 * Check if the requested number of dwords is available in the CS and 183 * if not, flush. Then validate buffers and emit dirty state. 184 * \param r300 The context. 185 * \param flags See r300_prepare_flags. 186 * \param index_buffer The index buffer to validate. The parameter may be NULL. 187 * \param cs_dwords The number of dwords to reserve in CS. 188 * \param aos_offset The offset passed to emit_aos. 189 * \param index_bias The index bias to emit. 190 * \param end_cs_dwords The number of free dwords which must be available 191 * at the end of CS after drawing in case the CS space 192 * management is performed by a draw_* function manually. 193 * The parameter may be NULL. 194 */ 195static void r300_prepare_for_rendering(struct r300_context *r300, 196 enum r300_prepare_flags flags, 197 struct pipe_resource *index_buffer, 198 unsigned cs_dwords, 199 int aos_offset, 200 int index_bias, 201 unsigned *end_cs_dwords) 202{ 203 unsigned end_dwords = 0; 204 boolean flushed = FALSE; 205 boolean first_draw = flags & PREP_FIRST_DRAW; 206 boolean emit_aos = flags & PREP_EMIT_AOS; 207 boolean emit_aos_swtcl = flags & PREP_EMIT_AOS_SWTCL; 208 boolean indexed = flags & PREP_INDEXED; 209 boolean hw_index_bias = index_bias_supported(r300); 210 211 /* Add dirty state, index offset, and AOS. */ 212 if (first_draw) { 213 cs_dwords += r300_get_num_dirty_dwords(r300); 214 215 if (hw_index_bias) 216 cs_dwords += 2; /* emit_index_offset */ 217 218 if (emit_aos) 219 cs_dwords += 55; /* emit_aos */ 220 221 if (emit_aos_swtcl) 222 cs_dwords += 7; /* emit_aos_swtcl */ 223 } 224 225 /* Emitted in flush. */ 226 end_dwords += 26; /* emit_query_end */ 227 228 cs_dwords += end_dwords; 229 230 /* Reserve requested CS space. */ 231 if (!r300_check_cs(r300, cs_dwords)) { 232 r300->context.flush(&r300->context, 0, NULL); 233 flushed = TRUE; 234 } 235 236 /* Validate buffers and emit dirty state if needed. */ 237 if (first_draw || flushed) { 238 r300_emit_buffer_validate(r300, flags & PREP_VALIDATE_VBOS, index_buffer); 239 r300_emit_dirty_state(r300); 240 if (hw_index_bias) { 241 if (r300->screen->caps.has_tcl) 242 r500_emit_index_bias(r300, index_bias); 243 else 244 r500_emit_index_bias(r300, 0); 245 } 246 247 if (emit_aos) 248 r300_emit_aos(r300, aos_offset, indexed); 249 250 if (emit_aos_swtcl) 251 r300_emit_aos_swtcl(r300, indexed); 252 } 253 254 if (end_cs_dwords) 255 *end_cs_dwords = end_dwords; 256} 257 258static boolean immd_is_good_idea(struct r300_context *r300, 259 unsigned count) 260{ 261 struct pipe_vertex_element* velem; 262 struct pipe_vertex_buffer* vbuf; 263 boolean checked[PIPE_MAX_ATTRIBS] = {0}; 264 unsigned vertex_element_count = r300->velems->count; 265 unsigned i, vbi; 266 267 if (DBG_ON(r300, DBG_NO_IMMD)) { 268 return FALSE; 269 } 270 271 if (r300->draw) { 272 return FALSE; 273 } 274 275 if (count * r300->velems->vertex_size_dwords > IMMD_DWORDS) { 276 return FALSE; 277 } 278 279 /* We shouldn't map buffers referenced by CS, busy buffers, 280 * and ones placed in VRAM. */ 281 /* XXX Check for VRAM buffers. */ 282 for (i = 0; i < vertex_element_count; i++) { 283 velem = &r300->velems->velem[i]; 284 vbi = velem->vertex_buffer_index; 285 286 if (!checked[vbi]) { 287 vbuf = &r300->vertex_buffer[vbi]; 288 289 if (r300_buffer_is_referenced(&r300->context, 290 vbuf->buffer, 291 R300_REF_CS | R300_REF_HW)) { 292 /* It's a very bad idea to map it... */ 293 return FALSE; 294 } 295 checked[vbi] = TRUE; 296 } 297 } 298 return TRUE; 299} 300 301/***************************************************************************** 302 * The emission of draw packets for r500. Older GPUs may use these functions * 303 * after resolving fallback issues (e.g. stencil ref two-sided). * 304 ****************************************************************************/ 305 306static void r300_emit_draw_arrays_immediate(struct r300_context *r300, 307 unsigned mode, 308 unsigned start, 309 unsigned count) 310{ 311 struct pipe_vertex_element* velem; 312 struct pipe_vertex_buffer* vbuf; 313 unsigned vertex_element_count = r300->velems->count; 314 unsigned i, v, vbi, dwords; 315 316 /* Size of the vertex, in dwords. */ 317 unsigned vertex_size = r300->velems->vertex_size_dwords; 318 319 /* Offsets of the attribute, in dwords, from the start of the vertex. */ 320 unsigned offset[PIPE_MAX_ATTRIBS]; 321 322 /* Size of the vertex element, in dwords. */ 323 unsigned size[PIPE_MAX_ATTRIBS]; 324 325 /* Stride to the same attrib in the next vertex in the vertex buffer, 326 * in dwords. */ 327 unsigned stride[PIPE_MAX_ATTRIBS] = {0}; 328 329 /* Mapped vertex buffers. */ 330 uint32_t* map[PIPE_MAX_ATTRIBS] = {0}; 331 struct pipe_transfer* transfer[PIPE_MAX_ATTRIBS] = {NULL}; 332 333 CB_LOCALS; 334 335 /* Calculate the vertex size, offsets, strides etc. and map the buffers. */ 336 for (i = 0; i < vertex_element_count; i++) { 337 velem = &r300->velems->velem[i]; 338 offset[i] = velem->src_offset / 4; 339 size[i] = r300->velems->hw_format_size[i] / 4; 340 vbi = velem->vertex_buffer_index; 341 342 /* Map the buffer. */ 343 if (!map[vbi]) { 344 vbuf = &r300->vertex_buffer[vbi]; 345 map[vbi] = (uint32_t*)pipe_buffer_map(&r300->context, 346 vbuf->buffer, 347 PIPE_TRANSFER_READ, 348 &transfer[vbi]); 349 stride[vbi] = vbuf->stride / 4; 350 map[vbi] += vbuf->buffer_offset / 4 + stride[vbi] * start; 351 } 352 } 353 354 dwords = 9 + count * vertex_size; 355 356 r300_prepare_for_rendering(r300, PREP_FIRST_DRAW, NULL, dwords, 0, 0, NULL); 357 358 BEGIN_CS_AS_CB(r300, dwords); 359 OUT_CB_REG(R300_GA_COLOR_CONTROL, 360 r300_provoking_vertex_fixes(r300, mode)); 361 OUT_CB_REG(R300_VAP_VTX_SIZE, vertex_size); 362 OUT_CB_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2); 363 OUT_CB(count - 1); 364 OUT_CB(0); 365 OUT_CB_PKT3(R300_PACKET3_3D_DRAW_IMMD_2, count * vertex_size); 366 OUT_CB(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED | (count << 16) | 367 r300_translate_primitive(mode)); 368 369 /* Emit vertices. */ 370 for (v = 0; v < count; v++) { 371 for (i = 0; i < vertex_element_count; i++) { 372 vbi = r300->velems->velem[i].vertex_buffer_index; 373 374 OUT_CB_TABLE(&map[vbi][offset[i] + stride[vbi] * v], size[i]); 375 } 376 } 377 END_CB; 378 379 /* Unmap buffers. */ 380 for (i = 0; i < vertex_element_count; i++) { 381 vbi = r300->velems->velem[i].vertex_buffer_index; 382 383 if (map[vbi]) { 384 vbuf = &r300->vertex_buffer[vbi]; 385 pipe_buffer_unmap(&r300->context, vbuf->buffer, transfer[vbi]); 386 map[vbi] = NULL; 387 } 388 } 389} 390 391static void r300_emit_draw_arrays(struct r300_context *r300, 392 unsigned mode, 393 unsigned count) 394{ 395 boolean alt_num_verts = count > 65535; 396 CS_LOCALS(r300); 397 398 if (count >= (1 << 24)) { 399 fprintf(stderr, "r300: Got a huge number of vertices: %i, " 400 "refusing to render.\n", count); 401 return; 402 } 403 404 BEGIN_CS(7 + (alt_num_verts ? 2 : 0)); 405 if (alt_num_verts) { 406 OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count); 407 } 408 OUT_CS_REG(R300_GA_COLOR_CONTROL, 409 r300_provoking_vertex_fixes(r300, mode)); 410 OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2); 411 OUT_CS(count - 1); 412 OUT_CS(0); 413 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0); 414 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) | 415 r300_translate_primitive(mode) | 416 (alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0)); 417 END_CS; 418} 419 420static void r300_emit_draw_elements(struct r300_context *r300, 421 struct pipe_resource* indexBuffer, 422 unsigned indexSize, 423 unsigned minIndex, 424 unsigned maxIndex, 425 unsigned mode, 426 unsigned start, 427 unsigned count) 428{ 429 uint32_t count_dwords; 430 uint32_t offset_dwords = indexSize * start / sizeof(uint32_t); 431 boolean alt_num_verts = count > 65535; 432 CS_LOCALS(r300); 433 434 if (count >= (1 << 24)) { 435 fprintf(stderr, "r300: Got a huge number of vertices: %i, " 436 "refusing to render.\n", count); 437 return; 438 } 439 440 maxIndex = MIN2(maxIndex, r300->vertex_buffer_max_index); 441 442 DBG(r300, DBG_DRAW, "r300: Indexbuf of %u indices, min %u max %u\n", 443 count, minIndex, maxIndex); 444 445 BEGIN_CS(13 + (alt_num_verts ? 2 : 0)); 446 if (alt_num_verts) { 447 OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count); 448 } 449 OUT_CS_REG(R300_GA_COLOR_CONTROL, 450 r300_provoking_vertex_fixes(r300, mode)); 451 OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2); 452 OUT_CS(maxIndex); 453 OUT_CS(minIndex); 454 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, 0); 455 if (indexSize == 4) { 456 count_dwords = count; 457 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) | 458 R300_VAP_VF_CNTL__INDEX_SIZE_32bit | 459 r300_translate_primitive(mode) | 460 (alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0)); 461 } else { 462 count_dwords = (count + 1) / 2; 463 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) | 464 r300_translate_primitive(mode) | 465 (alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0)); 466 } 467 468 /* INDX_BUFFER is a truly special packet3. 469 * Unlike most other packet3, where the offset is after the count, 470 * the order is reversed, so the relocation ends up carrying the 471 * size of the indexbuf instead of the offset. 472 */ 473 OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER, 2); 474 OUT_CS(R300_INDX_BUFFER_ONE_REG_WR | (R300_VAP_PORT_IDX0 >> 2) | 475 (0 << R300_INDX_BUFFER_SKIP_SHIFT)); 476 OUT_CS(offset_dwords << 2); 477 OUT_CS_BUF_RELOC(indexBuffer, count_dwords, 478 r300_buffer(indexBuffer)->domain, 0, 0); 479 480 END_CS; 481} 482 483/* This is the fast-path drawing & emission for HW TCL. */ 484static void r300_draw_range_elements(struct pipe_context* pipe, 485 struct pipe_resource* indexBuffer, 486 unsigned indexSize, 487 int indexBias, 488 unsigned minIndex, 489 unsigned maxIndex, 490 unsigned mode, 491 unsigned start, 492 unsigned count) 493{ 494 struct r300_context* r300 = r300_context(pipe); 495 struct pipe_resource* orgIndexBuffer = indexBuffer; 496 boolean alt_num_verts = r300->screen->caps.is_r500 && 497 count > 65536 && 498 r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0); 499 unsigned short_count; 500 int buffer_offset = 0, index_offset = 0; /* for index bias emulation */ 501 boolean translate = FALSE; 502 503 if (r300->skip_rendering) { 504 return; 505 } 506 507 if (!u_trim_pipe_prim(mode, &count)) { 508 return; 509 } 510 511 /* Set up fallback for incompatible vertex layout if needed. */ 512 if (r300->incompatible_vb_layout || r300->velems->incompatible_layout) { 513 r300_begin_vertex_translate(r300); 514 translate = TRUE; 515 } 516 517 if (indexBias && !index_bias_supported(r300)) { 518 r300_split_index_bias(r300, indexBias, &buffer_offset, &index_offset); 519 } 520 521 r300_translate_index_buffer(r300, &indexBuffer, &indexSize, index_offset, 522 &start, count); 523 524 r300_update_derived_state(r300); 525 r300_upload_index_buffer(r300, &indexBuffer, indexSize, start, count); 526 527 /* 15 dwords for emit_draw_elements */ 528 r300_prepare_for_rendering(r300, 529 PREP_FIRST_DRAW | PREP_VALIDATE_VBOS | PREP_EMIT_AOS | PREP_INDEXED, 530 indexBuffer, 15, buffer_offset, indexBias, NULL); 531 532 u_upload_flush(r300->upload_vb); 533 u_upload_flush(r300->upload_ib); 534 if (alt_num_verts || count <= 65535) { 535 r300_emit_draw_elements(r300, indexBuffer, indexSize, 536 minIndex, maxIndex, mode, start, count); 537 } else { 538 do { 539 short_count = MIN2(count, 65534); 540 r300_emit_draw_elements(r300, indexBuffer, indexSize, 541 minIndex, maxIndex, 542 mode, start, short_count); 543 544 start += short_count; 545 count -= short_count; 546 547 /* 15 dwords for emit_draw_elements */ 548 if (count) { 549 r300_prepare_for_rendering(r300, 550 PREP_VALIDATE_VBOS | PREP_EMIT_AOS | PREP_INDEXED, 551 indexBuffer, 15, buffer_offset, indexBias, NULL); 552 } 553 } while (count); 554 } 555 556 if (indexBuffer != orgIndexBuffer) { 557 pipe_resource_reference( &indexBuffer, NULL ); 558 } 559 560 if (translate) { 561 r300_end_vertex_translate(r300); 562 } 563} 564 565/* Simple helpers for context setup. Should probably be moved to util. */ 566static void r300_draw_elements(struct pipe_context* pipe, 567 struct pipe_resource* indexBuffer, 568 unsigned indexSize, int indexBias, unsigned mode, 569 unsigned start, unsigned count) 570{ 571 struct r300_context *r300 = r300_context(pipe); 572 573 pipe->draw_range_elements(pipe, indexBuffer, indexSize, indexBias, 574 0, r300->vertex_buffer_max_index, 575 mode, start, count); 576} 577 578static void r300_draw_arrays(struct pipe_context* pipe, unsigned mode, 579 unsigned start, unsigned count) 580{ 581 struct r300_context* r300 = r300_context(pipe); 582 boolean alt_num_verts = r300->screen->caps.is_r500 && 583 count > 65536 && 584 r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0); 585 unsigned short_count; 586 boolean translate = FALSE; 587 588 if (r300->skip_rendering) { 589 return; 590 } 591 592 if (!u_trim_pipe_prim(mode, &count)) { 593 return; 594 } 595 596 /* Set up fallback for incompatible vertex layout if needed. */ 597 if (r300->incompatible_vb_layout || r300->velems->incompatible_layout) { 598 r300_begin_vertex_translate(r300); 599 translate = TRUE; 600 } 601 602 r300_update_derived_state(r300); 603 604 if (immd_is_good_idea(r300, count)) { 605 r300_emit_draw_arrays_immediate(r300, mode, start, count); 606 } else { 607 /* 9 spare dwords for emit_draw_arrays. */ 608 r300_prepare_for_rendering(r300, PREP_FIRST_DRAW | PREP_VALIDATE_VBOS | PREP_EMIT_AOS, 609 NULL, 9, start, 0, NULL); 610 611 if (alt_num_verts || count <= 65535) { 612 r300_emit_draw_arrays(r300, mode, count); 613 } else { 614 do { 615 short_count = MIN2(count, 65535); 616 r300_emit_draw_arrays(r300, mode, short_count); 617 618 start += short_count; 619 count -= short_count; 620 621 /* 9 spare dwords for emit_draw_arrays. */ 622 if (count) { 623 r300_prepare_for_rendering(r300, 624 PREP_VALIDATE_VBOS | PREP_EMIT_AOS, NULL, 9, 625 start, 0, NULL); 626 } 627 } while (count); 628 } 629 u_upload_flush(r300->upload_vb); 630 } 631 632 if (translate) { 633 r300_end_vertex_translate(r300); 634 } 635} 636 637/**************************************************************************** 638 * The rest of this file is for SW TCL rendering only. Please be polite and * 639 * keep these functions separated so that they are easier to locate. ~C. * 640 ***************************************************************************/ 641 642/* SW TCL arrays, using Draw. */ 643static void r300_swtcl_draw_arrays(struct pipe_context* pipe, 644 unsigned mode, 645 unsigned start, 646 unsigned count) 647{ 648 struct r300_context* r300 = r300_context(pipe); 649 struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS]; 650 int i; 651 652 if (r300->skip_rendering) { 653 return; 654 } 655 656 if (!u_trim_pipe_prim(mode, &count)) { 657 return; 658 } 659 660 r300_update_derived_state(r300); 661 662 for (i = 0; i < r300->vertex_buffer_count; i++) { 663 void* buf = pipe_buffer_map(pipe, 664 r300->vertex_buffer[i].buffer, 665 PIPE_TRANSFER_READ, 666 &vb_transfer[i]); 667 draw_set_mapped_vertex_buffer(r300->draw, i, buf); 668 } 669 670 draw_set_mapped_element_buffer(r300->draw, 0, 0, NULL); 671 672 draw_arrays(r300->draw, mode, start, count); 673 674 /* XXX Not sure whether this is the best fix. 675 * It prevents CS from being rejected and weird assertion failures. */ 676 draw_flush(r300->draw); 677 678 for (i = 0; i < r300->vertex_buffer_count; i++) { 679 pipe_buffer_unmap(pipe, r300->vertex_buffer[i].buffer, 680 vb_transfer[i]); 681 draw_set_mapped_vertex_buffer(r300->draw, i, NULL); 682 } 683} 684 685/* SW TCL elements, using Draw. */ 686static void r300_swtcl_draw_range_elements(struct pipe_context* pipe, 687 struct pipe_resource* indexBuffer, 688 unsigned indexSize, 689 int indexBias, 690 unsigned minIndex, 691 unsigned maxIndex, 692 unsigned mode, 693 unsigned start, 694 unsigned count) 695{ 696 struct r300_context* r300 = r300_context(pipe); 697 struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS]; 698 struct pipe_transfer *ib_transfer; 699 int i; 700 void* indices; 701 702 if (r300->skip_rendering) { 703 return; 704 } 705 706 if (!u_trim_pipe_prim(mode, &count)) { 707 return; 708 } 709 710 r300_update_derived_state(r300); 711 712 for (i = 0; i < r300->vertex_buffer_count; i++) { 713 void* buf = pipe_buffer_map(pipe, 714 r300->vertex_buffer[i].buffer, 715 PIPE_TRANSFER_READ, 716 &vb_transfer[i]); 717 draw_set_mapped_vertex_buffer(r300->draw, i, buf); 718 } 719 720 indices = pipe_buffer_map(pipe, indexBuffer, 721 PIPE_TRANSFER_READ, &ib_transfer); 722 draw_set_mapped_element_buffer_range(r300->draw, indexSize, indexBias, 723 minIndex, maxIndex, indices); 724 725 draw_arrays(r300->draw, mode, start, count); 726 727 /* XXX Not sure whether this is the best fix. 728 * It prevents CS from being rejected and weird assertion failures. */ 729 draw_flush(r300->draw); 730 731 for (i = 0; i < r300->vertex_buffer_count; i++) { 732 pipe_buffer_unmap(pipe, r300->vertex_buffer[i].buffer, 733 vb_transfer[i]); 734 draw_set_mapped_vertex_buffer(r300->draw, i, NULL); 735 } 736 737 pipe_buffer_unmap(pipe, indexBuffer, 738 ib_transfer); 739 draw_set_mapped_element_buffer_range(r300->draw, 0, 0, 740 start, start + count - 1, 741 NULL); 742} 743 744/* Object for rendering using Draw. */ 745struct r300_render { 746 /* Parent class */ 747 struct vbuf_render base; 748 749 /* Pipe context */ 750 struct r300_context* r300; 751 752 /* Vertex information */ 753 size_t vertex_size; 754 unsigned prim; 755 unsigned hwprim; 756 757 /* VBO */ 758 struct pipe_resource* vbo; 759 size_t vbo_size; 760 size_t vbo_offset; 761 size_t vbo_max_used; 762 void * vbo_ptr; 763 764 struct pipe_transfer *vbo_transfer; 765}; 766 767static INLINE struct r300_render* 768r300_render(struct vbuf_render* render) 769{ 770 return (struct r300_render*)render; 771} 772 773static const struct vertex_info* 774r300_render_get_vertex_info(struct vbuf_render* render) 775{ 776 struct r300_render* r300render = r300_render(render); 777 struct r300_context* r300 = r300render->r300; 778 779 return &r300->vertex_info; 780} 781 782static boolean r300_render_allocate_vertices(struct vbuf_render* render, 783 ushort vertex_size, 784 ushort count) 785{ 786 struct r300_render* r300render = r300_render(render); 787 struct r300_context* r300 = r300render->r300; 788 struct pipe_screen* screen = r300->context.screen; 789 size_t size = (size_t)vertex_size * (size_t)count; 790 791 if (size + r300render->vbo_offset > r300render->vbo_size) 792 { 793 pipe_resource_reference(&r300->vbo, NULL); 794 r300render->vbo = pipe_buffer_create(screen, 795 PIPE_BIND_VERTEX_BUFFER, 796 R300_MAX_DRAW_VBO_SIZE); 797 r300render->vbo_offset = 0; 798 r300render->vbo_size = R300_MAX_DRAW_VBO_SIZE; 799 } 800 801 r300render->vertex_size = vertex_size; 802 r300->vbo = r300render->vbo; 803 r300->vbo_offset = r300render->vbo_offset; 804 805 return (r300render->vbo) ? TRUE : FALSE; 806} 807 808static void* r300_render_map_vertices(struct vbuf_render* render) 809{ 810 struct r300_render* r300render = r300_render(render); 811 812 assert(!r300render->vbo_transfer); 813 814 r300render->vbo_ptr = pipe_buffer_map(&r300render->r300->context, 815 r300render->vbo, 816 PIPE_TRANSFER_WRITE, 817 &r300render->vbo_transfer); 818 819 return ((uint8_t*)r300render->vbo_ptr + r300render->vbo_offset); 820} 821 822static void r300_render_unmap_vertices(struct vbuf_render* render, 823 ushort min, 824 ushort max) 825{ 826 struct r300_render* r300render = r300_render(render); 827 struct pipe_context* context = &r300render->r300->context; 828 829 assert(r300render->vbo_transfer); 830 831 r300render->vbo_max_used = MAX2(r300render->vbo_max_used, 832 r300render->vertex_size * (max + 1)); 833 pipe_buffer_unmap(context, r300render->vbo, r300render->vbo_transfer); 834 835 r300render->vbo_transfer = NULL; 836} 837 838static void r300_render_release_vertices(struct vbuf_render* render) 839{ 840 struct r300_render* r300render = r300_render(render); 841 842 r300render->vbo_offset += r300render->vbo_max_used; 843 r300render->vbo_max_used = 0; 844} 845 846static boolean r300_render_set_primitive(struct vbuf_render* render, 847 unsigned prim) 848{ 849 struct r300_render* r300render = r300_render(render); 850 851 r300render->prim = prim; 852 r300render->hwprim = r300_translate_primitive(prim); 853 854 return TRUE; 855} 856 857static void r300_render_draw_arrays(struct vbuf_render* render, 858 unsigned start, 859 unsigned count) 860{ 861 struct r300_render* r300render = r300_render(render); 862 struct r300_context* r300 = r300render->r300; 863 uint8_t* ptr; 864 unsigned i; 865 unsigned dwords = 6; 866 867 CS_LOCALS(r300); 868 869 (void) i; (void) ptr; 870 871 r300_prepare_for_rendering(r300, PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL, 872 NULL, dwords, 0, 0, NULL); 873 874 DBG(r300, DBG_DRAW, "r300: Doing vbuf render, count %d\n", count); 875 876 /* Uncomment to dump all VBOs rendered through this interface. 877 * Slow and noisy! 878 ptr = pipe_buffer_map(&r300render->r300->context, 879 r300render->vbo, PIPE_TRANSFER_READ, 880 &r300render->vbo_transfer); 881 882 for (i = 0; i < count; i++) { 883 printf("r300: Vertex %d\n", i); 884 draw_dump_emitted_vertex(&r300->vertex_info, ptr); 885 ptr += r300->vertex_info.size * 4; 886 printf("\n"); 887 } 888 889 pipe_buffer_unmap(&r300render->r300->context, r300render->vbo, 890 r300render->vbo_transfer); 891 */ 892 893 BEGIN_CS(dwords); 894 OUT_CS_REG(R300_GA_COLOR_CONTROL, 895 r300_provoking_vertex_fixes(r300, r300render->prim)); 896 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, count - 1); 897 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0); 898 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) | 899 r300render->hwprim); 900 END_CS; 901} 902 903static void r300_render_draw_elements(struct vbuf_render* render, 904 const ushort* indices, 905 uint count) 906{ 907 struct r300_render* r300render = r300_render(render); 908 struct r300_context* r300 = r300render->r300; 909 int i; 910 unsigned end_cs_dwords; 911 unsigned max_index = (r300render->vbo_size - r300render->vbo_offset) / 912 (r300render->r300->vertex_info.size * 4) - 1; 913 unsigned short_count; 914 unsigned free_dwords; 915 916 CS_LOCALS(r300); 917 918 /* Reserve at least 256 dwords. 919 * 920 * Below we manage the CS space manually because there may be more 921 * indices than it can fit in CS. */ 922 r300_prepare_for_rendering(r300, 923 PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL | PREP_INDEXED, 924 NULL, 256, 0, 0, &end_cs_dwords); 925 926 while (count) { 927 free_dwords = r300->rws->get_cs_free_dwords(r300->rws); 928 929 short_count = MIN2(count, (free_dwords - end_cs_dwords - 6) * 2); 930 931 BEGIN_CS(6 + (short_count+1)/2); 932 OUT_CS_REG(R300_GA_COLOR_CONTROL, 933 r300_provoking_vertex_fixes(r300, r300render->prim)); 934 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, max_index); 935 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (short_count+1)/2); 936 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (short_count << 16) | 937 r300render->hwprim); 938 for (i = 0; i < short_count-1; i += 2) { 939 OUT_CS(indices[i+1] << 16 | indices[i]); 940 } 941 if (short_count % 2) { 942 OUT_CS(indices[short_count-1]); 943 } 944 END_CS; 945 946 /* OK now subtract the emitted indices and see if we need to emit 947 * another draw packet. */ 948 indices += short_count; 949 count -= short_count; 950 951 if (count) { 952 r300_prepare_for_rendering(r300, 953 PREP_EMIT_AOS_SWTCL | PREP_INDEXED, 954 NULL, 256, 0, 0, &end_cs_dwords); 955 } 956 } 957} 958 959static void r300_render_destroy(struct vbuf_render* render) 960{ 961 FREE(render); 962} 963 964static struct vbuf_render* r300_render_create(struct r300_context* r300) 965{ 966 struct r300_render* r300render = CALLOC_STRUCT(r300_render); 967 968 r300render->r300 = r300; 969 970 /* XXX find real numbers plz */ 971 r300render->base.max_vertex_buffer_bytes = 128 * 1024; 972 r300render->base.max_indices = 16 * 1024; 973 974 r300render->base.get_vertex_info = r300_render_get_vertex_info; 975 r300render->base.allocate_vertices = r300_render_allocate_vertices; 976 r300render->base.map_vertices = r300_render_map_vertices; 977 r300render->base.unmap_vertices = r300_render_unmap_vertices; 978 r300render->base.set_primitive = r300_render_set_primitive; 979 r300render->base.draw_elements = r300_render_draw_elements; 980 r300render->base.draw_arrays = r300_render_draw_arrays; 981 r300render->base.release_vertices = r300_render_release_vertices; 982 r300render->base.destroy = r300_render_destroy; 983 984 r300render->vbo = NULL; 985 r300render->vbo_size = 0; 986 r300render->vbo_offset = 0; 987 988 return &r300render->base; 989} 990 991struct draw_stage* r300_draw_stage(struct r300_context* r300) 992{ 993 struct vbuf_render* render; 994 struct draw_stage* stage; 995 996 render = r300_render_create(r300); 997 998 if (!render) { 999 return NULL; 1000 } 1001 1002 stage = draw_vbuf_stage(r300->draw, render); 1003 1004 if (!stage) { 1005 render->destroy(render); 1006 return NULL; 1007 } 1008 1009 draw_set_render(r300->draw, render); 1010 1011 return stage; 1012} 1013 1014/**************************************************************************** 1015 * End of SW TCL functions * 1016 ***************************************************************************/ 1017 1018static void r300_resource_resolve(struct pipe_context* pipe, 1019 struct pipe_resource* dest, 1020 struct pipe_subresource subdest, 1021 struct pipe_resource* src, 1022 struct pipe_subresource subsrc) 1023{ 1024 struct r300_context* r300 = r300_context(pipe); 1025 struct r300_surface* destsurf = r300_surface( 1026 dest->screen->get_tex_surface(dest->screen, 1027 dest, subdest.face, subdest.level, 0, 0)); 1028 struct pipe_surface* srcsurf = src->screen->get_tex_surface(src->screen, 1029 src, subsrc.face, subsrc.level, 0, 0); 1030 float color[] = {0, 0, 0, 0}; 1031 CS_LOCALS(r300); 1032 1033 DBG(r300, DBG_DRAW, "r300: Resolving resource...\n"); 1034 1035 OUT_CS_REG_SEQ(R300_RB3D_AARESOLVE_OFFSET, 1); 1036 OUT_CS_RELOC(destsurf->buffer, destsurf->offset, 0, destsurf->domain, 0); 1037 1038 OUT_CS_REG_SEQ(R300_RB3D_AARESOLVE_PITCH, 1); 1039 OUT_CS_RELOC(destsurf->buffer, destsurf->pitch, 0, destsurf->domain, 0); 1040 1041 OUT_CS_REG(R300_RB3D_AARESOLVE_CTL, 1042 R300_RB3D_AARESOLVE_CTL_AARESOLVE_MODE_RESOLVE | 1043 R300_RB3D_AARESOLVE_CTL_AARESOLVE_ALPHA_AVERAGE); 1044 1045 r300->context.clear_render_target(pipe, 1046 srcsurf, color, 0, 0, src->width0, src->height0); 1047 1048 OUT_CS_REG(R300_RB3D_AARESOLVE_CTL, 0x0); 1049 1050 pipe_surface_reference((struct pipe_surface**)&srcsurf, NULL); 1051 pipe_surface_reference((struct pipe_surface**)&destsurf, NULL); 1052} 1053 1054void r300_init_render_functions(struct r300_context *r300) 1055{ 1056 /* Set generic functions. */ 1057 r300->context.draw_elements = r300_draw_elements; 1058 1059 /* Set draw functions based on presence of HW TCL. */ 1060 if (r300->screen->caps.has_tcl) { 1061 r300->context.draw_arrays = r300_draw_arrays; 1062 r300->context.draw_range_elements = r300_draw_range_elements; 1063 } else { 1064 r300->context.draw_arrays = r300_swtcl_draw_arrays; 1065 r300->context.draw_range_elements = r300_swtcl_draw_range_elements; 1066 } 1067 1068 r300->context.resource_resolve = r300_resource_resolve; 1069 1070 /* Plug in the two-sided stencil reference value fallback if needed. */ 1071 if (!r300->screen->caps.is_r500) 1072 r300_plug_in_stencil_ref_fallback(r300); 1073} 1074