st_draw.c revision aa5ba96d294698809186cc4b59034abbd3076812
1/************************************************************************** 2 * 3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. 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 TUNGSTEN GRAPHICS 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/* 29 * This file implements the st_draw_vbo() function which is called from 30 * Mesa's VBO module. All point/line/triangle rendering is done through 31 * this function whether the user called glBegin/End, glDrawArrays, 32 * glDrawElements, glEvalMesh, or glCalList, etc. 33 * 34 * We basically convert the VBO's vertex attribute/array information into 35 * Gallium vertex state, bind the vertex buffer objects and call 36 * pipe->draw_elements(), pipe->draw_range_elements() or pipe->draw_arrays(). 37 * 38 * Authors: 39 * Keith Whitwell <keith@tungstengraphics.com> 40 */ 41 42 43#include "main/imports.h" 44#include "main/image.h" 45#include "main/macros.h" 46#include "program/prog_uniform.h" 47 48#include "vbo/vbo.h" 49 50#include "st_context.h" 51#include "st_atom.h" 52#include "st_cb_bufferobjects.h" 53#include "st_draw.h" 54#include "st_program.h" 55 56#include "pipe/p_context.h" 57#include "pipe/p_defines.h" 58#include "util/u_inlines.h" 59#include "util/u_format.h" 60#include "util/u_prim.h" 61#include "util/u_draw_quad.h" 62#include "draw/draw_context.h" 63#include "cso_cache/cso_context.h" 64 65 66static GLuint double_types[4] = { 67 PIPE_FORMAT_R64_FLOAT, 68 PIPE_FORMAT_R64G64_FLOAT, 69 PIPE_FORMAT_R64G64B64_FLOAT, 70 PIPE_FORMAT_R64G64B64A64_FLOAT 71}; 72 73static GLuint float_types[4] = { 74 PIPE_FORMAT_R32_FLOAT, 75 PIPE_FORMAT_R32G32_FLOAT, 76 PIPE_FORMAT_R32G32B32_FLOAT, 77 PIPE_FORMAT_R32G32B32A32_FLOAT 78}; 79 80static GLuint half_float_types[4] = { 81 PIPE_FORMAT_R16_FLOAT, 82 PIPE_FORMAT_R16G16_FLOAT, 83 PIPE_FORMAT_R16G16B16_FLOAT, 84 PIPE_FORMAT_R16G16B16A16_FLOAT 85}; 86 87static GLuint uint_types_norm[4] = { 88 PIPE_FORMAT_R32_UNORM, 89 PIPE_FORMAT_R32G32_UNORM, 90 PIPE_FORMAT_R32G32B32_UNORM, 91 PIPE_FORMAT_R32G32B32A32_UNORM 92}; 93 94static GLuint uint_types_scale[4] = { 95 PIPE_FORMAT_R32_USCALED, 96 PIPE_FORMAT_R32G32_USCALED, 97 PIPE_FORMAT_R32G32B32_USCALED, 98 PIPE_FORMAT_R32G32B32A32_USCALED 99}; 100 101static GLuint int_types_norm[4] = { 102 PIPE_FORMAT_R32_SNORM, 103 PIPE_FORMAT_R32G32_SNORM, 104 PIPE_FORMAT_R32G32B32_SNORM, 105 PIPE_FORMAT_R32G32B32A32_SNORM 106}; 107 108static GLuint int_types_scale[4] = { 109 PIPE_FORMAT_R32_SSCALED, 110 PIPE_FORMAT_R32G32_SSCALED, 111 PIPE_FORMAT_R32G32B32_SSCALED, 112 PIPE_FORMAT_R32G32B32A32_SSCALED 113}; 114 115static GLuint ushort_types_norm[4] = { 116 PIPE_FORMAT_R16_UNORM, 117 PIPE_FORMAT_R16G16_UNORM, 118 PIPE_FORMAT_R16G16B16_UNORM, 119 PIPE_FORMAT_R16G16B16A16_UNORM 120}; 121 122static GLuint ushort_types_scale[4] = { 123 PIPE_FORMAT_R16_USCALED, 124 PIPE_FORMAT_R16G16_USCALED, 125 PIPE_FORMAT_R16G16B16_USCALED, 126 PIPE_FORMAT_R16G16B16A16_USCALED 127}; 128 129static GLuint short_types_norm[4] = { 130 PIPE_FORMAT_R16_SNORM, 131 PIPE_FORMAT_R16G16_SNORM, 132 PIPE_FORMAT_R16G16B16_SNORM, 133 PIPE_FORMAT_R16G16B16A16_SNORM 134}; 135 136static GLuint short_types_scale[4] = { 137 PIPE_FORMAT_R16_SSCALED, 138 PIPE_FORMAT_R16G16_SSCALED, 139 PIPE_FORMAT_R16G16B16_SSCALED, 140 PIPE_FORMAT_R16G16B16A16_SSCALED 141}; 142 143static GLuint ubyte_types_norm[4] = { 144 PIPE_FORMAT_R8_UNORM, 145 PIPE_FORMAT_R8G8_UNORM, 146 PIPE_FORMAT_R8G8B8_UNORM, 147 PIPE_FORMAT_R8G8B8A8_UNORM 148}; 149 150static GLuint ubyte_types_scale[4] = { 151 PIPE_FORMAT_R8_USCALED, 152 PIPE_FORMAT_R8G8_USCALED, 153 PIPE_FORMAT_R8G8B8_USCALED, 154 PIPE_FORMAT_R8G8B8A8_USCALED 155}; 156 157static GLuint byte_types_norm[4] = { 158 PIPE_FORMAT_R8_SNORM, 159 PIPE_FORMAT_R8G8_SNORM, 160 PIPE_FORMAT_R8G8B8_SNORM, 161 PIPE_FORMAT_R8G8B8A8_SNORM 162}; 163 164static GLuint byte_types_scale[4] = { 165 PIPE_FORMAT_R8_SSCALED, 166 PIPE_FORMAT_R8G8_SSCALED, 167 PIPE_FORMAT_R8G8B8_SSCALED, 168 PIPE_FORMAT_R8G8B8A8_SSCALED 169}; 170 171static GLuint fixed_types[4] = { 172 PIPE_FORMAT_R32_FIXED, 173 PIPE_FORMAT_R32G32_FIXED, 174 PIPE_FORMAT_R32G32B32_FIXED, 175 PIPE_FORMAT_R32G32B32A32_FIXED 176}; 177 178 179 180/** 181 * Return a PIPE_FORMAT_x for the given GL datatype and size. 182 */ 183GLuint 184st_pipe_vertex_format(GLenum type, GLuint size, GLenum format, 185 GLboolean normalized) 186{ 187 assert((type >= GL_BYTE && type <= GL_DOUBLE) || 188 type == GL_FIXED || type == GL_HALF_FLOAT); 189 assert(size >= 1); 190 assert(size <= 4); 191 assert(format == GL_RGBA || format == GL_BGRA); 192 193 if (format == GL_BGRA) { 194 /* this is an odd-ball case */ 195 assert(type == GL_UNSIGNED_BYTE); 196 assert(normalized); 197 return PIPE_FORMAT_B8G8R8A8_UNORM; 198 } 199 200 if (normalized) { 201 switch (type) { 202 case GL_DOUBLE: return double_types[size-1]; 203 case GL_FLOAT: return float_types[size-1]; 204 case GL_HALF_FLOAT: return half_float_types[size-1]; 205 case GL_INT: return int_types_norm[size-1]; 206 case GL_SHORT: return short_types_norm[size-1]; 207 case GL_BYTE: return byte_types_norm[size-1]; 208 case GL_UNSIGNED_INT: return uint_types_norm[size-1]; 209 case GL_UNSIGNED_SHORT: return ushort_types_norm[size-1]; 210 case GL_UNSIGNED_BYTE: return ubyte_types_norm[size-1]; 211 case GL_FIXED: return fixed_types[size-1]; 212 default: assert(0); return 0; 213 } 214 } 215 else { 216 switch (type) { 217 case GL_DOUBLE: return double_types[size-1]; 218 case GL_FLOAT: return float_types[size-1]; 219 case GL_HALF_FLOAT: return half_float_types[size-1]; 220 case GL_INT: return int_types_scale[size-1]; 221 case GL_SHORT: return short_types_scale[size-1]; 222 case GL_BYTE: return byte_types_scale[size-1]; 223 case GL_UNSIGNED_INT: return uint_types_scale[size-1]; 224 case GL_UNSIGNED_SHORT: return ushort_types_scale[size-1]; 225 case GL_UNSIGNED_BYTE: return ubyte_types_scale[size-1]; 226 case GL_FIXED: return fixed_types[size-1]; 227 default: assert(0); return 0; 228 } 229 } 230 return 0; /* silence compiler warning */ 231} 232 233 234 235 236 237/** 238 * Examine the active arrays to determine if we have interleaved 239 * vertex arrays all living in one VBO, or all living in user space. 240 * \param userSpace returns whether the arrays are in user space. 241 */ 242static GLboolean 243is_interleaved_arrays(const struct st_vertex_program *vp, 244 const struct st_vp_variant *vpv, 245 const struct gl_client_array **arrays, 246 GLboolean *userSpace) 247{ 248 GLuint attr; 249 const struct gl_buffer_object *firstBufObj = NULL; 250 GLint firstStride = -1; 251 GLuint num_client_arrays = 0; 252 const GLubyte *client_addr = NULL; 253 254 for (attr = 0; attr < vpv->num_inputs; attr++) { 255 const GLuint mesaAttr = vp->index_to_input[attr]; 256 const struct gl_buffer_object *bufObj = arrays[mesaAttr]->BufferObj; 257 const GLsizei stride = arrays[mesaAttr]->StrideB; /* in bytes */ 258 259 if (firstStride < 0) { 260 firstStride = stride; 261 } 262 else if (firstStride != stride) { 263 return GL_FALSE; 264 } 265 266 if (!bufObj || !bufObj->Name) { 267 num_client_arrays++; 268 /* Try to detect if the client-space arrays are 269 * "close" to each other. 270 */ 271 if (!client_addr) { 272 client_addr = arrays[mesaAttr]->Ptr; 273 } 274 else if (abs(arrays[mesaAttr]->Ptr - client_addr) > firstStride) { 275 /* arrays start too far apart */ 276 return GL_FALSE; 277 } 278 } 279 else if (!firstBufObj) { 280 firstBufObj = bufObj; 281 } 282 else if (bufObj != firstBufObj) { 283 return GL_FALSE; 284 } 285 } 286 287 *userSpace = (num_client_arrays == vpv->num_inputs); 288 /* debug_printf("user space: %s (%d arrays, %d inputs)\n", 289 (int)*userSpace ? "Yes" : "No", num_client_arrays, vp->num_inputs); */ 290 291 return GL_TRUE; 292} 293 294 295/** 296 * Compute the memory range occupied by the arrays. 297 */ 298static void 299get_arrays_bounds(const struct st_vertex_program *vp, 300 const struct st_vp_variant *vpv, 301 const struct gl_client_array **arrays, 302 GLuint max_index, 303 const GLubyte **low, const GLubyte **high) 304{ 305 const GLubyte *low_addr = NULL; 306 const GLubyte *high_addr = NULL; 307 GLuint attr; 308 309 /* debug_printf("get_arrays_bounds: Handling %u attrs\n", vpv->num_inputs); */ 310 311 for (attr = 0; attr < vpv->num_inputs; attr++) { 312 const GLuint mesaAttr = vp->index_to_input[attr]; 313 const GLint stride = arrays[mesaAttr]->StrideB; 314 const GLubyte *start = arrays[mesaAttr]->Ptr; 315 const unsigned sz = (arrays[mesaAttr]->Size * 316 _mesa_sizeof_type(arrays[mesaAttr]->Type)); 317 const GLubyte *end = start + (max_index * stride) + sz; 318 319 /* debug_printf("attr %u: stride %d size %u start %p end %p\n", 320 attr, stride, sz, start, end); */ 321 322 if (attr == 0) { 323 low_addr = start; 324 high_addr = end; 325 } 326 else { 327 low_addr = MIN2(low_addr, start); 328 high_addr = MAX2(high_addr, end); 329 } 330 } 331 332 *low = low_addr; 333 *high = high_addr; 334} 335 336 337/** 338 * Set up for drawing interleaved arrays that all live in one VBO 339 * or all live in user space. 340 * \param vbuffer returns vertex buffer info 341 * \param velements returns vertex element info 342 */ 343static void 344setup_interleaved_attribs(struct gl_context *ctx, 345 const struct st_vertex_program *vp, 346 const struct st_vp_variant *vpv, 347 const struct gl_client_array **arrays, 348 GLuint max_index, 349 GLboolean userSpace, 350 struct pipe_vertex_buffer *vbuffer, 351 struct pipe_vertex_element velements[]) 352{ 353 struct st_context *st = st_context(ctx); 354 struct pipe_context *pipe = st->pipe; 355 GLuint attr; 356 const GLubyte *offset0 = NULL; 357 358 for (attr = 0; attr < vpv->num_inputs; attr++) { 359 const GLuint mesaAttr = vp->index_to_input[attr]; 360 struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj; 361 struct st_buffer_object *stobj = st_buffer_object(bufobj); 362 GLsizei stride = arrays[mesaAttr]->StrideB; 363 364 /*printf("stobj %u = %p\n", attr, (void*)stobj);*/ 365 366 if (attr == 0) { 367 const GLubyte *low, *high; 368 369 get_arrays_bounds(vp, vpv, arrays, max_index, &low, &high); 370 /* debug_printf("buffer range: %p %p range %d max index %u\n", 371 low, high, high - low, max_index); */ 372 373 offset0 = low; 374 if (userSpace) { 375 vbuffer->buffer = 376 pipe_user_buffer_create(pipe->screen, (void *) low, high - low, 377 PIPE_BIND_VERTEX_BUFFER); 378 vbuffer->buffer_offset = 0; 379 } 380 else { 381 vbuffer->buffer = NULL; 382 pipe_resource_reference(&vbuffer->buffer, stobj->buffer); 383 vbuffer->buffer_offset = pointer_to_offset(low); 384 } 385 vbuffer->stride = stride; /* in bytes */ 386 vbuffer->max_index = max_index; 387 } 388 389 velements[attr].src_offset = 390 (unsigned) (arrays[mesaAttr]->Ptr - offset0); 391 velements[attr].instance_divisor = 0; 392 velements[attr].vertex_buffer_index = 0; 393 velements[attr].src_format = 394 st_pipe_vertex_format(arrays[mesaAttr]->Type, 395 arrays[mesaAttr]->Size, 396 arrays[mesaAttr]->Format, 397 arrays[mesaAttr]->Normalized); 398 assert(velements[attr].src_format); 399 } 400} 401 402 403/** 404 * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each 405 * vertex attribute. 406 * \param vbuffer returns vertex buffer info 407 * \param velements returns vertex element info 408 */ 409static void 410setup_non_interleaved_attribs(struct gl_context *ctx, 411 const struct st_vertex_program *vp, 412 const struct st_vp_variant *vpv, 413 const struct gl_client_array **arrays, 414 GLuint max_index, 415 GLboolean *userSpace, 416 struct pipe_vertex_buffer vbuffer[], 417 struct pipe_vertex_element velements[]) 418{ 419 struct st_context *st = st_context(ctx); 420 struct pipe_context *pipe = st->pipe; 421 GLuint attr; 422 423 for (attr = 0; attr < vpv->num_inputs; attr++) { 424 const GLuint mesaAttr = vp->index_to_input[attr]; 425 struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj; 426 GLsizei stride = arrays[mesaAttr]->StrideB; 427 428 *userSpace = GL_FALSE; 429 430 if (bufobj && bufobj->Name) { 431 /* Attribute data is in a VBO. 432 * Recall that for VBOs, the gl_client_array->Ptr field is 433 * really an offset from the start of the VBO, not a pointer. 434 */ 435 struct st_buffer_object *stobj = st_buffer_object(bufobj); 436 assert(stobj->buffer); 437 /*printf("stobj %u = %p\n", attr, (void*) stobj);*/ 438 439 vbuffer[attr].buffer = NULL; 440 pipe_resource_reference(&vbuffer[attr].buffer, stobj->buffer); 441 vbuffer[attr].buffer_offset = pointer_to_offset(arrays[mesaAttr]->Ptr); 442 velements[attr].src_offset = 0; 443 } 444 else { 445 /* attribute data is in user-space memory, not a VBO */ 446 uint bytes; 447 /*printf("user-space array %d stride %d\n", attr, stride);*/ 448 449 *userSpace = GL_TRUE; 450 451 /* wrap user data */ 452 if (arrays[mesaAttr]->Ptr) { 453 /* user's vertex array */ 454 if (arrays[mesaAttr]->StrideB) { 455 bytes = arrays[mesaAttr]->StrideB * (max_index + 1); 456 } 457 else { 458 bytes = arrays[mesaAttr]->Size 459 * _mesa_sizeof_type(arrays[mesaAttr]->Type); 460 } 461 vbuffer[attr].buffer = 462 pipe_user_buffer_create(pipe->screen, 463 (void *) arrays[mesaAttr]->Ptr, bytes, 464 PIPE_BIND_VERTEX_BUFFER); 465 } 466 else { 467 /* no array, use ctx->Current.Attrib[] value */ 468 bytes = sizeof(ctx->Current.Attrib[0]); 469 vbuffer[attr].buffer = 470 pipe_user_buffer_create(pipe->screen, 471 (void *) ctx->Current.Attrib[mesaAttr], 472 bytes, 473 PIPE_BIND_VERTEX_BUFFER); 474 stride = 0; 475 } 476 477 vbuffer[attr].buffer_offset = 0; 478 velements[attr].src_offset = 0; 479 } 480 481 assert(velements[attr].src_offset <= 2048); /* 11-bit field */ 482 483 /* common-case setup */ 484 vbuffer[attr].stride = stride; /* in bytes */ 485 vbuffer[attr].max_index = max_index; 486 velements[attr].instance_divisor = 0; 487 velements[attr].vertex_buffer_index = attr; 488 velements[attr].src_format 489 = st_pipe_vertex_format(arrays[mesaAttr]->Type, 490 arrays[mesaAttr]->Size, 491 arrays[mesaAttr]->Format, 492 arrays[mesaAttr]->Normalized); 493 assert(velements[attr].src_format); 494 } 495} 496 497 498static void 499setup_index_buffer(struct gl_context *ctx, 500 const struct _mesa_index_buffer *ib, 501 struct pipe_index_buffer *ibuffer) 502{ 503 struct st_context *st = st_context(ctx); 504 struct pipe_context *pipe = st->pipe; 505 506 memset(ibuffer, 0, sizeof(*ibuffer)); 507 if (ib) { 508 struct gl_buffer_object *bufobj = ib->obj; 509 510 switch (ib->type) { 511 case GL_UNSIGNED_INT: 512 ibuffer->index_size = 4; 513 break; 514 case GL_UNSIGNED_SHORT: 515 ibuffer->index_size = 2; 516 break; 517 case GL_UNSIGNED_BYTE: 518 ibuffer->index_size = 1; 519 break; 520 default: 521 assert(0); 522 return; 523 } 524 525 /* get/create the index buffer object */ 526 if (bufobj && bufobj->Name) { 527 /* elements/indexes are in a real VBO */ 528 struct st_buffer_object *stobj = st_buffer_object(bufobj); 529 pipe_resource_reference(&ibuffer->buffer, stobj->buffer); 530 ibuffer->offset = pointer_to_offset(ib->ptr); 531 } 532 else { 533 /* element/indicies are in user space memory */ 534 ibuffer->buffer = 535 pipe_user_buffer_create(pipe->screen, (void *) ib->ptr, 536 ib->count * ibuffer->index_size, 537 PIPE_BIND_INDEX_BUFFER); 538 } 539 } 540} 541 542/** 543 * Prior to drawing, check that any uniforms referenced by the 544 * current shader have been set. If a uniform has not been set, 545 * issue a warning. 546 */ 547static void 548check_uniforms(struct gl_context *ctx) 549{ 550 struct gl_shader_program *shProg[3] = { 551 ctx->Shader.CurrentVertexProgram, 552 ctx->Shader.CurrentGeometryProgram, 553 ctx->Shader.CurrentFragmentProgram, 554 }; 555 unsigned j; 556 557 for (j = 0; j < 3; j++) { 558 unsigned i; 559 560 if (shProg[j] == NULL || !shProg[j]->LinkStatus) 561 continue; 562 563 for (i = 0; i < shProg[j]->Uniforms->NumUniforms; i++) { 564 const struct gl_uniform *u = &shProg[j]->Uniforms->Uniforms[i]; 565 if (!u->Initialized) { 566 _mesa_warning(ctx, 567 "Using shader with uninitialized uniform: %s", 568 u->Name); 569 } 570 } 571 } 572} 573 574 575/** 576 * Translate OpenGL primtive type (GL_POINTS, GL_TRIANGLE_STRIP, etc) to 577 * the corresponding Gallium type. 578 */ 579static unsigned 580translate_prim(const struct gl_context *ctx, unsigned prim) 581{ 582 /* GL prims should match Gallium prims, spot-check a few */ 583 assert(GL_POINTS == PIPE_PRIM_POINTS); 584 assert(GL_QUADS == PIPE_PRIM_QUADS); 585 assert(GL_TRIANGLE_STRIP_ADJACENCY == PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY); 586 587 /* Avoid quadstrips if it's easy to do so: 588 * Note: it's imporant to do the correct trimming if we change the prim type! 589 * We do that wherever this function is called. 590 */ 591 if (prim == GL_QUAD_STRIP && 592 ctx->Light.ShadeModel != GL_FLAT && 593 ctx->Polygon.FrontMode == GL_FILL && 594 ctx->Polygon.BackMode == GL_FILL) 595 prim = GL_TRIANGLE_STRIP; 596 597 return prim; 598} 599 600 601 602/** 603 * This function gets plugged into the VBO module and is called when 604 * we have something to render. 605 * Basically, translate the information into the format expected by gallium. 606 */ 607void 608st_draw_vbo(struct gl_context *ctx, 609 const struct gl_client_array **arrays, 610 const struct _mesa_prim *prims, 611 GLuint nr_prims, 612 const struct _mesa_index_buffer *ib, 613 GLboolean index_bounds_valid, 614 GLuint min_index, 615 GLuint max_index) 616{ 617 struct st_context *st = st_context(ctx); 618 struct pipe_context *pipe = st->pipe; 619 const struct st_vertex_program *vp; 620 const struct st_vp_variant *vpv; 621 struct pipe_vertex_buffer vbuffer[PIPE_MAX_SHADER_INPUTS]; 622 GLuint attr; 623 struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS]; 624 unsigned num_vbuffers, num_velements; 625 struct pipe_index_buffer ibuffer; 626 GLboolean userSpace = GL_FALSE; 627 GLboolean vertDataEdgeFlags; 628 struct pipe_draw_info info; 629 unsigned i; 630 631 /* Mesa core state should have been validated already */ 632 assert(ctx->NewState == 0x0); 633 634 /* Gallium probably doesn't want this in some cases. */ 635 if (!index_bounds_valid) 636 if (!vbo_all_varyings_in_vbos(arrays)) 637 vbo_get_minmax_index(ctx, prims, ib, &min_index, &max_index); 638 639 /* sanity check for pointer arithmetic below */ 640 assert(sizeof(arrays[0]->Ptr[0]) == 1); 641 642 vertDataEdgeFlags = arrays[VERT_ATTRIB_EDGEFLAG]->BufferObj && 643 arrays[VERT_ATTRIB_EDGEFLAG]->BufferObj->Name; 644 if (vertDataEdgeFlags != st->vertdata_edgeflags) { 645 st->vertdata_edgeflags = vertDataEdgeFlags; 646 st->dirty.st |= ST_NEW_EDGEFLAGS_DATA; 647 } 648 649 st_validate_state(st); 650 651 /* must get these after state validation! */ 652 vp = st->vp; 653 vpv = st->vp_variant; 654 655#if 0 656 if (MESA_VERBOSE & VERBOSE_GLSL) { 657 check_uniforms(ctx); 658 } 659#else 660 (void) check_uniforms; 661#endif 662 663 memset(velements, 0, sizeof(struct pipe_vertex_element) * vpv->num_inputs); 664 /* 665 * Setup the vbuffer[] and velements[] arrays. 666 */ 667 if (is_interleaved_arrays(vp, vpv, arrays, &userSpace)) { 668 /*printf("Draw interleaved\n");*/ 669 setup_interleaved_attribs(ctx, vp, vpv, arrays, max_index, userSpace, 670 vbuffer, velements); 671 num_vbuffers = 1; 672 num_velements = vpv->num_inputs; 673 if (num_velements == 0) 674 num_vbuffers = 0; 675 } 676 else { 677 /*printf("Draw non-interleaved\n");*/ 678 setup_non_interleaved_attribs(ctx, vp, vpv, arrays, max_index, 679 &userSpace, vbuffer, velements); 680 num_vbuffers = vpv->num_inputs; 681 num_velements = vpv->num_inputs; 682 } 683 684#if 0 685 { 686 GLuint i; 687 for (i = 0; i < num_vbuffers; i++) { 688 printf("buffers[%d].stride = %u\n", i, vbuffer[i].stride); 689 printf("buffers[%d].max_index = %u\n", i, vbuffer[i].max_index); 690 printf("buffers[%d].buffer_offset = %u\n", i, vbuffer[i].buffer_offset); 691 printf("buffers[%d].buffer = %p\n", i, (void*) vbuffer[i].buffer); 692 } 693 for (i = 0; i < num_velements; i++) { 694 printf("vlements[%d].vbuffer_index = %u\n", i, velements[i].vertex_buffer_index); 695 printf("vlements[%d].src_offset = %u\n", i, velements[i].src_offset); 696 printf("vlements[%d].format = %s\n", i, util_format_name(velements[i].src_format)); 697 } 698 } 699#endif 700 701 pipe->set_vertex_buffers(pipe, num_vbuffers, vbuffer); 702 cso_set_vertex_elements(st->cso_context, num_velements, velements); 703 704 setup_index_buffer(ctx, ib, &ibuffer); 705 pipe->set_index_buffer(pipe, &ibuffer); 706 707 util_draw_init_info(&info); 708 if (ib) { 709 info.indexed = TRUE; 710 if (min_index != ~0 && max_index != ~0) { 711 info.min_index = min_index; 712 info.max_index = max_index; 713 } 714 } 715 716 info.primitive_restart = st->ctx->Array.PrimitiveRestart; 717 info.restart_index = st->ctx->Array.RestartIndex; 718 719 /* do actual drawing */ 720 for (i = 0; i < nr_prims; i++) { 721 info.mode = translate_prim( ctx, prims[i].mode ); 722 info.start = prims[i].start; 723 info.count = prims[i].count; 724 info.instance_count = prims[i].num_instances; 725 info.index_bias = prims[i].basevertex; 726 if (!ib) { 727 info.min_index = info.start; 728 info.max_index = info.start + info.count - 1; 729 } 730 731 if (u_trim_pipe_prim(info.mode, &info.count)) 732 pipe->draw_vbo(pipe, &info); 733 } 734 735 pipe_resource_reference(&ibuffer.buffer, NULL); 736 737 /* unreference buffers (frees wrapped user-space buffer objects) */ 738 for (attr = 0; attr < num_vbuffers; attr++) { 739 pipe_resource_reference(&vbuffer[attr].buffer, NULL); 740 assert(!vbuffer[attr].buffer); 741 } 742 743 if (userSpace) 744 { 745 pipe->set_vertex_buffers(pipe, 0, NULL); 746 } 747} 748 749 750void st_init_draw( struct st_context *st ) 751{ 752 struct gl_context *ctx = st->ctx; 753 754 vbo_set_draw_func(ctx, st_draw_vbo); 755 756#if FEATURE_feedback || FEATURE_rastpos 757 st->draw = draw_create(st->pipe); /* for selection/feedback */ 758 759 /* Disable draw options that might convert points/lines to tris, etc. 760 * as that would foul-up feedback/selection mode. 761 */ 762 draw_wide_line_threshold(st->draw, 1000.0f); 763 draw_wide_point_threshold(st->draw, 1000.0f); 764 draw_enable_line_stipple(st->draw, FALSE); 765 draw_enable_point_sprites(st->draw, FALSE); 766#endif 767} 768 769 770void st_destroy_draw( struct st_context *st ) 771{ 772#if FEATURE_feedback || FEATURE_rastpos 773 draw_destroy(st->draw); 774#endif 775} 776 777 778