r300_render.c revision c37a20416d681a3fea42a1a2ce907eb8e11ba795
1/* 2 * Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com> 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * on the rights to use, copy, modify, merge, publish, distribute, sub 8 * license, and/or sell copies of the Software, and to permit persons to whom 9 * the Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 21 * USE OR OTHER DEALINGS IN THE SOFTWARE. */ 22 23/* r300_render: Vertex and index buffer primitive emission. Contains both 24 * HW TCL fastpath rendering, and SW TCL Draw-assisted rendering. */ 25 26#include "draw/draw_context.h" 27#include "draw/draw_vbuf.h" 28 29#include "util/u_inlines.h" 30 31#include "util/u_format.h" 32#include "util/u_memory.h" 33#include "util/u_prim.h" 34 35#include "r300_cs.h" 36#include "r300_context.h" 37#include "r300_emit.h" 38#include "r300_reg.h" 39#include "r300_render.h" 40#include "r300_state_derived.h" 41 42/* r300_render: Vertex and index buffer primitive emission. */ 43#define R300_MAX_VBO_SIZE (1024 * 1024) 44 45/* XXX The DRM rejects VAP_ALT_NUM_VERTICES.. */ 46//#define ENABLE_ALT_NUM_VERTS 47 48uint32_t r300_translate_primitive(unsigned prim) 49{ 50 switch (prim) { 51 case PIPE_PRIM_POINTS: 52 return R300_VAP_VF_CNTL__PRIM_POINTS; 53 case PIPE_PRIM_LINES: 54 return R300_VAP_VF_CNTL__PRIM_LINES; 55 case PIPE_PRIM_LINE_LOOP: 56 return R300_VAP_VF_CNTL__PRIM_LINE_LOOP; 57 case PIPE_PRIM_LINE_STRIP: 58 return R300_VAP_VF_CNTL__PRIM_LINE_STRIP; 59 case PIPE_PRIM_TRIANGLES: 60 return R300_VAP_VF_CNTL__PRIM_TRIANGLES; 61 case PIPE_PRIM_TRIANGLE_STRIP: 62 return R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP; 63 case PIPE_PRIM_TRIANGLE_FAN: 64 return R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN; 65 case PIPE_PRIM_QUADS: 66 return R300_VAP_VF_CNTL__PRIM_QUADS; 67 case PIPE_PRIM_QUAD_STRIP: 68 return R300_VAP_VF_CNTL__PRIM_QUAD_STRIP; 69 case PIPE_PRIM_POLYGON: 70 return R300_VAP_VF_CNTL__PRIM_POLYGON; 71 default: 72 return 0; 73 } 74} 75 76static uint32_t r300_provoking_vertex_fixes(struct r300_context *r300, 77 unsigned mode) 78{ 79 struct r300_rs_state* rs = (struct r300_rs_state*)r300->rs_state.state; 80 uint32_t color_control = rs->color_control; 81 82 /* By default (see r300_state.c:r300_create_rs_state) color_control is 83 * initialized to provoking the first vertex. 84 * 85 * Triangle fans must be reduced to the second vertex, not the first, in 86 * Gallium flatshade-first mode, as per the GL spec. 87 * (http://www.opengl.org/registry/specs/ARB/provoking_vertex.txt) 88 * 89 * Quads never provoke correctly in flatshade-first mode. The first 90 * vertex is never considered as provoking, so only the second, third, 91 * and fourth vertices can be selected, and both "third" and "last" modes 92 * select the fourth vertex. This is probably due to D3D lacking quads. 93 * 94 * Similarly, polygons reduce to the first, not the last, vertex, when in 95 * "last" mode, and all other modes start from the second vertex. 96 * 97 * ~ C. 98 */ 99 100 if (rs->rs.flatshade_first) { 101 switch (mode) { 102 case PIPE_PRIM_TRIANGLE_FAN: 103 color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_SECOND; 104 break; 105 case PIPE_PRIM_QUADS: 106 case PIPE_PRIM_QUAD_STRIP: 107 case PIPE_PRIM_POLYGON: 108 color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST; 109 break; 110 default: 111 color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_FIRST; 112 break; 113 } 114 } else { 115 color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST; 116 } 117 118 return color_control; 119} 120 121/* Check if the requested number of dwords is available in the CS and 122 * if not, flush. Return TRUE if the flush occured. */ 123static boolean r300_reserve_cs_space(struct r300_context *r300, 124 unsigned dwords) 125{ 126 if (!r300->winsys->check_cs(r300->winsys, dwords)) { 127 r300->context.flush(&r300->context, 0, NULL); 128 return TRUE; 129 } 130 return FALSE; 131} 132 133static boolean immd_is_good_idea(struct r300_context *r300, 134 unsigned count) 135{ 136 return count <= 4; 137} 138 139static void r300_emit_draw_arrays_immediate(struct r300_context *r300, 140 unsigned mode, 141 unsigned start, 142 unsigned count) 143{ 144 struct pipe_vertex_element* velem; 145 struct pipe_vertex_buffer* vbuf; 146 unsigned vertex_element_count = r300->vertex_element_count; 147 unsigned i, v, vbi, dw, elem_offset, dwords; 148 149 /* Size of the vertex, in dwords. */ 150 unsigned vertex_size = 0; 151 152 /* Offsets of the attribute, in dwords, from the start of the vertex. */ 153 unsigned offset[PIPE_MAX_ATTRIBS]; 154 155 /* Size of the vertex element, in dwords. */ 156 unsigned size[PIPE_MAX_ATTRIBS]; 157 158 /* Stride to the same attrib in the next vertex in the vertex buffer, 159 * in dwords. */ 160 unsigned stride[PIPE_MAX_ATTRIBS] = {0}; 161 162 /* Mapped vertex buffers. */ 163 uint32_t* map[PIPE_MAX_ATTRIBS] = {0}; 164 165 CS_LOCALS(r300); 166 167 /* Calculate the vertex size, offsets, strides etc. and map the buffers. */ 168 for (i = 0; i < vertex_element_count; i++) { 169 velem = &r300->vertex_element[i]; 170 offset[i] = velem->src_offset / 4; 171 size[i] = util_format_get_blocksize(velem->src_format) / 4; 172 vertex_size += size[i]; 173 vbi = velem->vertex_buffer_index; 174 175 /* Map the buffer. */ 176 if (!map[vbi]) { 177 vbuf = &r300->vertex_buffer[vbi]; 178 map[vbi] = (uint32_t*)pipe_buffer_map(r300->context.screen, 179 vbuf->buffer, 180 PIPE_BUFFER_USAGE_CPU_READ); 181 map[vbi] += vbuf->buffer_offset / 4; 182 stride[vbi] = vbuf->stride / 4; 183 } 184 } 185 186 dwords = 10 + count * vertex_size; 187 188 r300_reserve_cs_space(r300, r300_get_num_dirty_dwords(r300) + dwords); 189 r300_emit_buffer_validate(r300, FALSE, 0); 190 r300_emit_dirty_state(r300); 191 192 BEGIN_CS(dwords); 193 OUT_CS_REG(R300_GA_COLOR_CONTROL, 194 r300_provoking_vertex_fixes(r300, mode)); 195 OUT_CS_REG(R300_VAP_VTX_SIZE, vertex_size); 196 OUT_CS_REG(R300_VAP_VF_MIN_VTX_INDX, 0); 197 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, count - 1); 198 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2, count * vertex_size); 199 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED | (count << 16) | 200 r300_translate_primitive(mode)); 201 202 /* Emit vertices. */ 203 for (v = 0; v < count; v++) { 204 for (i = 0; i < vertex_element_count; i++) { 205 velem = &r300->vertex_element[i]; 206 vbi = velem->vertex_buffer_index; 207 elem_offset = offset[i] + stride[vbi] * (v + start); 208 209 for (dw = 0; dw < size[i]; dw++) { 210 OUT_CS(map[vbi][elem_offset + dw]); 211 } 212 } 213 } 214 END_CS; 215 216 /* Unmap buffers. */ 217 for (i = 0; i < vertex_element_count; i++) { 218 vbi = r300->vertex_element[i].vertex_buffer_index; 219 220 if (map[vbi]) { 221 vbuf = &r300->vertex_buffer[vbi]; 222 pipe_buffer_unmap(r300->context.screen, vbuf->buffer); 223 map[vbi] = NULL; 224 } 225 } 226} 227 228static void r300_emit_draw_arrays(struct r300_context *r300, 229 unsigned mode, 230 unsigned count) 231{ 232#if defined(ENABLE_ALT_NUM_VERTS) 233 boolean alt_num_verts = count > 65535; 234#else 235 boolean alt_num_verts = FALSE; 236#endif 237 CS_LOCALS(r300); 238 239 if (alt_num_verts) { 240 assert(count < (1 << 24)); 241 BEGIN_CS(10); 242 OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count); 243 } else { 244 BEGIN_CS(8); 245 } 246 OUT_CS_REG(R300_GA_COLOR_CONTROL, 247 r300_provoking_vertex_fixes(r300, mode)); 248 OUT_CS_REG(R300_VAP_VF_MIN_VTX_INDX, 0); 249 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, count - 1); 250 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0); 251 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) | 252 r300_translate_primitive(mode) | 253 (alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0)); 254 END_CS; 255} 256 257static void r300_emit_draw_elements(struct r300_context *r300, 258 struct pipe_buffer* indexBuffer, 259 unsigned indexSize, 260 unsigned minIndex, 261 unsigned maxIndex, 262 unsigned mode, 263 unsigned start, 264 unsigned count) 265{ 266 uint32_t count_dwords; 267 uint32_t offset_dwords = indexSize * start / sizeof(uint32_t); 268#if defined(ENABLE_ALT_NUM_VERTS) 269 boolean alt_num_verts = count > 65535; 270#else 271 boolean alt_num_verts = FALSE; 272#endif 273 CS_LOCALS(r300); 274 275 assert((start * indexSize) % 4 == 0); 276 assert(count < (1 << 24)); 277 278 DBG(r300, DBG_DRAW, "r300: Indexbuf of %u indices, min %u max %u\n", 279 count, minIndex, maxIndex); 280 281 maxIndex = MIN2(maxIndex, r300->vertex_buffer_max_index); 282 283 if (alt_num_verts) { 284 BEGIN_CS(16); 285 OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count); 286 } else { 287 BEGIN_CS(14); 288 } 289 OUT_CS_REG(R300_GA_COLOR_CONTROL, 290 r300_provoking_vertex_fixes(r300, mode)); 291 OUT_CS_REG(R300_VAP_VF_MIN_VTX_INDX, minIndex); 292 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, maxIndex); 293 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, 0); 294 if (indexSize == 4) { 295 count_dwords = count; 296 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) | 297 R300_VAP_VF_CNTL__INDEX_SIZE_32bit | 298 r300_translate_primitive(mode) | 299 (alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0)); 300 } else { 301 count_dwords = (count + 1) / 2; 302 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) | 303 r300_translate_primitive(mode) | 304 (alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0)); 305 } 306 307 /* INDX_BUFFER is a truly special packet3. 308 * Unlike most other packet3, where the offset is after the count, 309 * the order is reversed, so the relocation ends up carrying the 310 * size of the indexbuf instead of the offset. 311 */ 312 OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER, 2); 313 OUT_CS(R300_INDX_BUFFER_ONE_REG_WR | (R300_VAP_PORT_IDX0 >> 2) | 314 (0 << R300_INDX_BUFFER_SKIP_SHIFT)); 315 OUT_CS(offset_dwords << 2); 316 OUT_CS_RELOC(indexBuffer, count_dwords, 317 RADEON_GEM_DOMAIN_GTT, 0, 0); 318 319 END_CS; 320} 321 322static void r300_shorten_ubyte_elts(struct r300_context* r300, 323 struct pipe_buffer** elts, 324 unsigned count) 325{ 326 struct pipe_screen* screen = r300->context.screen; 327 struct pipe_buffer* new_elts; 328 unsigned char *in_map; 329 unsigned short *out_map; 330 unsigned i; 331 332 new_elts = screen->buffer_create(screen, 32, 333 PIPE_BUFFER_USAGE_INDEX | 334 PIPE_BUFFER_USAGE_CPU_WRITE | 335 PIPE_BUFFER_USAGE_GPU_READ, 336 2 * count); 337 338 in_map = pipe_buffer_map(screen, *elts, PIPE_BUFFER_USAGE_CPU_READ); 339 out_map = pipe_buffer_map(screen, new_elts, PIPE_BUFFER_USAGE_CPU_WRITE); 340 341 for (i = 0; i < count; i++) { 342 *out_map = (unsigned short)*in_map; 343 in_map++; 344 out_map++; 345 } 346 347 pipe_buffer_unmap(screen, *elts); 348 pipe_buffer_unmap(screen, new_elts); 349 350 *elts = new_elts; 351} 352 353/* This is the fast-path drawing & emission for HW TCL. */ 354void r300_draw_range_elements(struct pipe_context* pipe, 355 struct pipe_buffer* indexBuffer, 356 unsigned indexSize, 357 unsigned minIndex, 358 unsigned maxIndex, 359 unsigned mode, 360 unsigned start, 361 unsigned count) 362{ 363 struct r300_context* r300 = r300_context(pipe); 364 struct pipe_buffer* orgIndexBuffer = indexBuffer; 365#if defined(ENABLE_ALT_NUM_VERTS) 366 boolean alt_num_verts = r300_screen(pipe->screen)->caps->is_r500 && 367 count > 65536; 368#else 369 boolean alt_num_verts = FALSE; 370#endif 371 unsigned short_count; 372 373 if (!u_trim_pipe_prim(mode, &count)) { 374 return; 375 } 376 377 if (indexSize == 1) { 378 r300_shorten_ubyte_elts(r300, &indexBuffer, count); 379 indexSize = 2; 380 } 381 382 r300_update_derived_state(r300); 383 384 /* 128 dwords for emit_aos and emit_draw_elements */ 385 r300_reserve_cs_space(r300, r300_get_num_dirty_dwords(r300) + 128); 386 r300_emit_buffer_validate(r300, TRUE, indexBuffer); 387 r300_emit_dirty_state(r300); 388 r300_emit_aos(r300, 0); 389 390 if (alt_num_verts || count <= 65535) { 391 r300_emit_draw_elements(r300, indexBuffer, indexSize, minIndex, 392 maxIndex, mode, start, count); 393 } else { 394 do { 395 short_count = MIN2(count, 65534); 396 r300_emit_draw_elements(r300, indexBuffer, indexSize, minIndex, 397 maxIndex, mode, start, short_count); 398 399 start += short_count; 400 count -= short_count; 401 402 /* 16 spare dwords are enough for emit_draw_elements. */ 403 if (count && r300_reserve_cs_space(r300, 16)) { 404 r300_emit_buffer_validate(r300, TRUE, indexBuffer); 405 r300_emit_dirty_state(r300); 406 r300_emit_aos(r300, 0); 407 } 408 } while (count); 409 } 410 411 if (indexBuffer != orgIndexBuffer) { 412 pipe->screen->buffer_destroy(indexBuffer); 413 } 414} 415 416/* Simple helpers for context setup. Should probably be moved to util. */ 417void r300_draw_elements(struct pipe_context* pipe, 418 struct pipe_buffer* indexBuffer, 419 unsigned indexSize, unsigned mode, 420 unsigned start, unsigned count) 421{ 422 struct r300_context *r300 = r300_context(pipe); 423 424 pipe->draw_range_elements(pipe, indexBuffer, indexSize, 0, 425 r300->vertex_buffer_max_index, 426 mode, start, count); 427} 428 429void r300_draw_arrays(struct pipe_context* pipe, unsigned mode, 430 unsigned start, unsigned count) 431{ 432 struct r300_context* r300 = r300_context(pipe); 433#if defined(ENABLE_ALT_NUM_VERTS) 434 boolean alt_num_verts = r300_screen(pipe->screen)->caps->is_r500 && 435 count > 65536; 436#else 437 boolean alt_num_verts = FALSE; 438#endif 439 unsigned short_count; 440 441 if (!u_trim_pipe_prim(mode, &count)) { 442 return; 443 } 444 445 r300_update_derived_state(r300); 446 447 if (immd_is_good_idea(r300, count)) { 448 r300_emit_draw_arrays_immediate(r300, mode, start, count); 449 } else { 450 /* Make sure there are at least 128 spare dwords in the command buffer. 451 * (most of it being consumed by emit_aos) */ 452 r300_reserve_cs_space(r300, r300_get_num_dirty_dwords(r300) + 128); 453 r300_emit_buffer_validate(r300, TRUE, 0); 454 r300_emit_dirty_state(r300); 455 456 if (alt_num_verts || count <= 65535) { 457 r300_emit_aos(r300, start); 458 r300_emit_draw_arrays(r300, mode, count); 459 } else { 460 do { 461 short_count = MIN2(count, 65535); 462 r300_emit_aos(r300, start); 463 r300_emit_draw_arrays(r300, mode, short_count); 464 465 start += short_count; 466 count -= short_count; 467 468 /* Again, we emit both AOS and draw_arrays so there should be 469 * at least 128 spare dwords. */ 470 if (count && r300_reserve_cs_space(r300, 128)) { 471 r300_emit_buffer_validate(r300, TRUE, 0); 472 r300_emit_dirty_state(r300); 473 } 474 } while (count); 475 } 476 } 477} 478 479/**************************************************************************** 480 * The rest of this file is for SW TCL rendering only. Please be polite and * 481 * keep these functions separated so that they are easier to locate. ~C. * 482 ***************************************************************************/ 483 484/* SW TCL arrays, using Draw. */ 485void r300_swtcl_draw_arrays(struct pipe_context* pipe, 486 unsigned mode, 487 unsigned start, 488 unsigned count) 489{ 490 struct r300_context* r300 = r300_context(pipe); 491 int i; 492 493 if (!u_trim_pipe_prim(mode, &count)) { 494 return; 495 } 496 497 for (i = 0; i < r300->vertex_buffer_count; i++) { 498 void* buf = pipe_buffer_map(pipe->screen, 499 r300->vertex_buffer[i].buffer, 500 PIPE_BUFFER_USAGE_CPU_READ); 501 draw_set_mapped_vertex_buffer(r300->draw, i, buf); 502 } 503 504 draw_set_mapped_element_buffer(r300->draw, 0, NULL); 505 506 draw_set_mapped_constant_buffer(r300->draw, 507 PIPE_SHADER_VERTEX, 508 0, 509 r300->shader_constants[PIPE_SHADER_VERTEX].constants, 510 r300->shader_constants[PIPE_SHADER_VERTEX].count * 511 (sizeof(float) * 4)); 512 513 draw_arrays(r300->draw, mode, start, count); 514 515 for (i = 0; i < r300->vertex_buffer_count; i++) { 516 pipe_buffer_unmap(pipe->screen, r300->vertex_buffer[i].buffer); 517 draw_set_mapped_vertex_buffer(r300->draw, i, NULL); 518 } 519} 520 521/* SW TCL elements, using Draw. */ 522void r300_swtcl_draw_range_elements(struct pipe_context* pipe, 523 struct pipe_buffer* indexBuffer, 524 unsigned indexSize, 525 unsigned minIndex, 526 unsigned maxIndex, 527 unsigned mode, 528 unsigned start, 529 unsigned count) 530{ 531 struct r300_context* r300 = r300_context(pipe); 532 int i; 533 void* indices; 534 535 if (!u_trim_pipe_prim(mode, &count)) { 536 return; 537 } 538 539 for (i = 0; i < r300->vertex_buffer_count; i++) { 540 void* buf = pipe_buffer_map(pipe->screen, 541 r300->vertex_buffer[i].buffer, 542 PIPE_BUFFER_USAGE_CPU_READ); 543 draw_set_mapped_vertex_buffer(r300->draw, i, buf); 544 } 545 546 indices = pipe_buffer_map(pipe->screen, indexBuffer, 547 PIPE_BUFFER_USAGE_CPU_READ); 548 draw_set_mapped_element_buffer_range(r300->draw, indexSize, 549 minIndex, maxIndex, indices); 550 551 draw_set_mapped_constant_buffer(r300->draw, 552 PIPE_SHADER_VERTEX, 553 0, 554 r300->shader_constants[PIPE_SHADER_VERTEX].constants, 555 r300->shader_constants[PIPE_SHADER_VERTEX].count * 556 (sizeof(float) * 4)); 557 558 draw_arrays(r300->draw, mode, start, count); 559 560 for (i = 0; i < r300->vertex_buffer_count; i++) { 561 pipe_buffer_unmap(pipe->screen, r300->vertex_buffer[i].buffer); 562 draw_set_mapped_vertex_buffer(r300->draw, i, NULL); 563 } 564 565 pipe_buffer_unmap(pipe->screen, indexBuffer); 566 draw_set_mapped_element_buffer_range(r300->draw, 0, start, 567 start + count - 1, NULL); 568} 569 570/* Object for rendering using Draw. */ 571struct r300_render { 572 /* Parent class */ 573 struct vbuf_render base; 574 575 /* Pipe context */ 576 struct r300_context* r300; 577 578 /* Vertex information */ 579 size_t vertex_size; 580 unsigned prim; 581 unsigned hwprim; 582 583 /* VBO */ 584 struct pipe_buffer* vbo; 585 size_t vbo_size; 586 size_t vbo_offset; 587 size_t vbo_max_used; 588 void * vbo_ptr; 589}; 590 591static INLINE struct r300_render* 592r300_render(struct vbuf_render* render) 593{ 594 return (struct r300_render*)render; 595} 596 597static const struct vertex_info* 598r300_render_get_vertex_info(struct vbuf_render* render) 599{ 600 struct r300_render* r300render = r300_render(render); 601 struct r300_context* r300 = r300render->r300; 602 603 r300_update_derived_state(r300); 604 605 return &r300->vertex_info; 606} 607 608static boolean r300_render_allocate_vertices(struct vbuf_render* render, 609 ushort vertex_size, 610 ushort count) 611{ 612 struct r300_render* r300render = r300_render(render); 613 struct r300_context* r300 = r300render->r300; 614 struct pipe_screen* screen = r300->context.screen; 615 size_t size = (size_t)vertex_size * (size_t)count; 616 617 if (size + r300render->vbo_offset > r300render->vbo_size) 618 { 619 pipe_buffer_reference(&r300->vbo, NULL); 620 r300render->vbo = pipe_buffer_create(screen, 621 64, 622 PIPE_BUFFER_USAGE_VERTEX, 623 R300_MAX_VBO_SIZE); 624 r300render->vbo_offset = 0; 625 r300render->vbo_size = R300_MAX_VBO_SIZE; 626 } 627 628 r300render->vertex_size = vertex_size; 629 r300->vbo = r300render->vbo; 630 r300->vbo_offset = r300render->vbo_offset; 631 632 return (r300render->vbo) ? TRUE : FALSE; 633} 634 635static void* r300_render_map_vertices(struct vbuf_render* render) 636{ 637 struct r300_render* r300render = r300_render(render); 638 struct pipe_screen* screen = r300render->r300->context.screen; 639 640 r300render->vbo_ptr = pipe_buffer_map(screen, r300render->vbo, 641 PIPE_BUFFER_USAGE_CPU_WRITE); 642 643 return ((uint8_t*)r300render->vbo_ptr + r300render->vbo_offset); 644} 645 646static void r300_render_unmap_vertices(struct vbuf_render* render, 647 ushort min, 648 ushort max) 649{ 650 struct r300_render* r300render = r300_render(render); 651 struct pipe_screen* screen = r300render->r300->context.screen; 652 CS_LOCALS(r300render->r300); 653 BEGIN_CS(2); 654 OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, max); 655 END_CS; 656 657 r300render->vbo_max_used = MAX2(r300render->vbo_max_used, 658 r300render->vertex_size * (max + 1)); 659 pipe_buffer_unmap(screen, r300render->vbo); 660} 661 662static void r300_render_release_vertices(struct vbuf_render* render) 663{ 664 struct r300_render* r300render = r300_render(render); 665 666 r300render->vbo_offset += r300render->vbo_max_used; 667 r300render->vbo_max_used = 0; 668} 669 670static boolean r300_render_set_primitive(struct vbuf_render* render, 671 unsigned prim) 672{ 673 struct r300_render* r300render = r300_render(render); 674 675 r300render->prim = prim; 676 r300render->hwprim = r300_translate_primitive(prim); 677 678 return TRUE; 679} 680 681static void r300_render_draw_arrays(struct vbuf_render* render, 682 unsigned start, 683 unsigned count) 684{ 685 struct r300_render* r300render = r300_render(render); 686 struct r300_context* r300 = r300render->r300; 687 688 CS_LOCALS(r300); 689 690 r300_reserve_cs_space(r300, r300_get_num_dirty_dwords(r300) + 2); 691 r300_emit_dirty_state(r300); 692 693 DBG(r300, DBG_DRAW, "r300: Doing vbuf render, count %d\n", count); 694 695 BEGIN_CS(2); 696 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0); 697 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) | 698 r300render->hwprim); 699 END_CS; 700} 701 702static void r300_render_draw(struct vbuf_render* render, 703 const ushort* indices, 704 uint count) 705{ 706 struct r300_render* r300render = r300_render(render); 707 struct r300_context* r300 = r300render->r300; 708 int i; 709 unsigned dwords = 2 + (count+1)/2; 710 711 CS_LOCALS(r300); 712 713 r300_reserve_cs_space(r300, r300_get_num_dirty_dwords(r300) + dwords); 714 r300_emit_dirty_state(r300); 715 716 BEGIN_CS(dwords); 717 OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (count+1)/2); 718 OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) | 719 r300render->hwprim); 720 for (i = 0; i < count-1; i += 2) { 721 OUT_CS(indices[i+1] << 16 | indices[i]); 722 } 723 if (count % 2) { 724 OUT_CS(indices[count-1]); 725 } 726 END_CS; 727} 728 729static void r300_render_destroy(struct vbuf_render* render) 730{ 731 FREE(render); 732} 733 734static struct vbuf_render* r300_render_create(struct r300_context* r300) 735{ 736 struct r300_render* r300render = CALLOC_STRUCT(r300_render); 737 738 r300render->r300 = r300; 739 740 /* XXX find real numbers plz */ 741 r300render->base.max_vertex_buffer_bytes = 128 * 1024; 742 r300render->base.max_indices = 16 * 1024; 743 744 r300render->base.get_vertex_info = r300_render_get_vertex_info; 745 r300render->base.allocate_vertices = r300_render_allocate_vertices; 746 r300render->base.map_vertices = r300_render_map_vertices; 747 r300render->base.unmap_vertices = r300_render_unmap_vertices; 748 r300render->base.set_primitive = r300_render_set_primitive; 749 r300render->base.draw = r300_render_draw; 750 r300render->base.draw_arrays = r300_render_draw_arrays; 751 r300render->base.release_vertices = r300_render_release_vertices; 752 r300render->base.destroy = r300_render_destroy; 753 754 r300render->vbo = NULL; 755 r300render->vbo_size = 0; 756 r300render->vbo_offset = 0; 757 758 return &r300render->base; 759} 760 761struct draw_stage* r300_draw_stage(struct r300_context* r300) 762{ 763 struct vbuf_render* render; 764 struct draw_stage* stage; 765 766 render = r300_render_create(r300); 767 768 if (!render) { 769 return NULL; 770 } 771 772 stage = draw_vbuf_stage(r300->draw, render); 773 774 if (!stage) { 775 render->destroy(render); 776 return NULL; 777 } 778 779 draw_set_render(r300->draw, render); 780 781 return stage; 782} 783