st_draw.c revision a6860f0913d5d4be0c73da963e84e97fc926225f
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 "main/mfeatures.h" 47#include "program/prog_uniform.h" 48 49#include "vbo/vbo.h" 50 51#include "st_context.h" 52#include "st_atom.h" 53#include "st_cb_bufferobjects.h" 54#include "st_draw.h" 55#include "st_program.h" 56 57#include "pipe/p_context.h" 58#include "pipe/p_defines.h" 59#include "util/u_inlines.h" 60#include "util/u_format.h" 61#include "util/u_prim.h" 62#include "util/u_draw_quad.h" 63#include "draw/draw_context.h" 64#include "cso_cache/cso_context.h" 65 66 67static GLuint double_types[4] = { 68 PIPE_FORMAT_R64_FLOAT, 69 PIPE_FORMAT_R64G64_FLOAT, 70 PIPE_FORMAT_R64G64B64_FLOAT, 71 PIPE_FORMAT_R64G64B64A64_FLOAT 72}; 73 74static GLuint float_types[4] = { 75 PIPE_FORMAT_R32_FLOAT, 76 PIPE_FORMAT_R32G32_FLOAT, 77 PIPE_FORMAT_R32G32B32_FLOAT, 78 PIPE_FORMAT_R32G32B32A32_FLOAT 79}; 80 81static GLuint half_float_types[4] = { 82 PIPE_FORMAT_R16_FLOAT, 83 PIPE_FORMAT_R16G16_FLOAT, 84 PIPE_FORMAT_R16G16B16_FLOAT, 85 PIPE_FORMAT_R16G16B16A16_FLOAT 86}; 87 88static GLuint uint_types_norm[4] = { 89 PIPE_FORMAT_R32_UNORM, 90 PIPE_FORMAT_R32G32_UNORM, 91 PIPE_FORMAT_R32G32B32_UNORM, 92 PIPE_FORMAT_R32G32B32A32_UNORM 93}; 94 95static GLuint uint_types_scale[4] = { 96 PIPE_FORMAT_R32_USCALED, 97 PIPE_FORMAT_R32G32_USCALED, 98 PIPE_FORMAT_R32G32B32_USCALED, 99 PIPE_FORMAT_R32G32B32A32_USCALED 100}; 101 102static GLuint int_types_norm[4] = { 103 PIPE_FORMAT_R32_SNORM, 104 PIPE_FORMAT_R32G32_SNORM, 105 PIPE_FORMAT_R32G32B32_SNORM, 106 PIPE_FORMAT_R32G32B32A32_SNORM 107}; 108 109static GLuint int_types_scale[4] = { 110 PIPE_FORMAT_R32_SSCALED, 111 PIPE_FORMAT_R32G32_SSCALED, 112 PIPE_FORMAT_R32G32B32_SSCALED, 113 PIPE_FORMAT_R32G32B32A32_SSCALED 114}; 115 116static GLuint ushort_types_norm[4] = { 117 PIPE_FORMAT_R16_UNORM, 118 PIPE_FORMAT_R16G16_UNORM, 119 PIPE_FORMAT_R16G16B16_UNORM, 120 PIPE_FORMAT_R16G16B16A16_UNORM 121}; 122 123static GLuint ushort_types_scale[4] = { 124 PIPE_FORMAT_R16_USCALED, 125 PIPE_FORMAT_R16G16_USCALED, 126 PIPE_FORMAT_R16G16B16_USCALED, 127 PIPE_FORMAT_R16G16B16A16_USCALED 128}; 129 130static GLuint short_types_norm[4] = { 131 PIPE_FORMAT_R16_SNORM, 132 PIPE_FORMAT_R16G16_SNORM, 133 PIPE_FORMAT_R16G16B16_SNORM, 134 PIPE_FORMAT_R16G16B16A16_SNORM 135}; 136 137static GLuint short_types_scale[4] = { 138 PIPE_FORMAT_R16_SSCALED, 139 PIPE_FORMAT_R16G16_SSCALED, 140 PIPE_FORMAT_R16G16B16_SSCALED, 141 PIPE_FORMAT_R16G16B16A16_SSCALED 142}; 143 144static GLuint ubyte_types_norm[4] = { 145 PIPE_FORMAT_R8_UNORM, 146 PIPE_FORMAT_R8G8_UNORM, 147 PIPE_FORMAT_R8G8B8_UNORM, 148 PIPE_FORMAT_R8G8B8A8_UNORM 149}; 150 151static GLuint ubyte_types_scale[4] = { 152 PIPE_FORMAT_R8_USCALED, 153 PIPE_FORMAT_R8G8_USCALED, 154 PIPE_FORMAT_R8G8B8_USCALED, 155 PIPE_FORMAT_R8G8B8A8_USCALED 156}; 157 158static GLuint byte_types_norm[4] = { 159 PIPE_FORMAT_R8_SNORM, 160 PIPE_FORMAT_R8G8_SNORM, 161 PIPE_FORMAT_R8G8B8_SNORM, 162 PIPE_FORMAT_R8G8B8A8_SNORM 163}; 164 165static GLuint byte_types_scale[4] = { 166 PIPE_FORMAT_R8_SSCALED, 167 PIPE_FORMAT_R8G8_SSCALED, 168 PIPE_FORMAT_R8G8B8_SSCALED, 169 PIPE_FORMAT_R8G8B8A8_SSCALED 170}; 171 172static GLuint fixed_types[4] = { 173 PIPE_FORMAT_R32_FIXED, 174 PIPE_FORMAT_R32G32_FIXED, 175 PIPE_FORMAT_R32G32B32_FIXED, 176 PIPE_FORMAT_R32G32B32A32_FIXED 177}; 178 179 180 181/** 182 * Return a PIPE_FORMAT_x for the given GL datatype and size. 183 */ 184GLuint 185st_pipe_vertex_format(GLenum type, GLuint size, GLenum format, 186 GLboolean normalized) 187{ 188 assert((type >= GL_BYTE && type <= GL_DOUBLE) || 189 type == GL_FIXED || type == GL_HALF_FLOAT); 190 assert(size >= 1); 191 assert(size <= 4); 192 assert(format == GL_RGBA || format == GL_BGRA); 193 194 if (format == GL_BGRA) { 195 /* this is an odd-ball case */ 196 assert(type == GL_UNSIGNED_BYTE); 197 assert(normalized); 198 return PIPE_FORMAT_B8G8R8A8_UNORM; 199 } 200 201 if (normalized) { 202 switch (type) { 203 case GL_DOUBLE: return double_types[size-1]; 204 case GL_FLOAT: return float_types[size-1]; 205 case GL_HALF_FLOAT: return half_float_types[size-1]; 206 case GL_INT: return int_types_norm[size-1]; 207 case GL_SHORT: return short_types_norm[size-1]; 208 case GL_BYTE: return byte_types_norm[size-1]; 209 case GL_UNSIGNED_INT: return uint_types_norm[size-1]; 210 case GL_UNSIGNED_SHORT: return ushort_types_norm[size-1]; 211 case GL_UNSIGNED_BYTE: return ubyte_types_norm[size-1]; 212 case GL_FIXED: return fixed_types[size-1]; 213 default: assert(0); return 0; 214 } 215 } 216 else { 217 switch (type) { 218 case GL_DOUBLE: return double_types[size-1]; 219 case GL_FLOAT: return float_types[size-1]; 220 case GL_HALF_FLOAT: return half_float_types[size-1]; 221 case GL_INT: return int_types_scale[size-1]; 222 case GL_SHORT: return short_types_scale[size-1]; 223 case GL_BYTE: return byte_types_scale[size-1]; 224 case GL_UNSIGNED_INT: return uint_types_scale[size-1]; 225 case GL_UNSIGNED_SHORT: return ushort_types_scale[size-1]; 226 case GL_UNSIGNED_BYTE: return ubyte_types_scale[size-1]; 227 case GL_FIXED: return fixed_types[size-1]; 228 default: assert(0); return 0; 229 } 230 } 231 return 0; /* silence compiler warning */ 232} 233 234 235 236 237 238/** 239 * Examine the active arrays to determine if we have interleaved 240 * vertex arrays all living in one VBO, or all living in user space. 241 * \param userSpace returns whether the arrays are in user space. 242 */ 243static GLboolean 244is_interleaved_arrays(const struct st_vertex_program *vp, 245 const struct st_vp_variant *vpv, 246 const struct gl_client_array **arrays, 247 GLboolean *userSpace) 248{ 249 GLuint attr; 250 const struct gl_buffer_object *firstBufObj = NULL; 251 GLint firstStride = -1; 252 GLuint num_client_arrays = 0; 253 const GLubyte *client_addr = NULL; 254 255 for (attr = 0; attr < vpv->num_inputs; attr++) { 256 const GLuint mesaAttr = vp->index_to_input[attr]; 257 const struct gl_buffer_object *bufObj = arrays[mesaAttr]->BufferObj; 258 const GLsizei stride = arrays[mesaAttr]->StrideB; /* in bytes */ 259 260 if (firstStride < 0) { 261 firstStride = stride; 262 } 263 else if (firstStride != stride) { 264 return GL_FALSE; 265 } 266 267 if (!bufObj || !bufObj->Name) { 268 num_client_arrays++; 269 /* Try to detect if the client-space arrays are 270 * "close" to each other. 271 */ 272 if (!client_addr) { 273 client_addr = arrays[mesaAttr]->Ptr; 274 } 275 else if (abs(arrays[mesaAttr]->Ptr - client_addr) > firstStride) { 276 /* arrays start too far apart */ 277 return GL_FALSE; 278 } 279 } 280 else if (!firstBufObj) { 281 firstBufObj = bufObj; 282 } 283 else if (bufObj != firstBufObj) { 284 return GL_FALSE; 285 } 286 } 287 288 *userSpace = (num_client_arrays == vpv->num_inputs); 289 /* debug_printf("user space: %s (%d arrays, %d inputs)\n", 290 (int)*userSpace ? "Yes" : "No", num_client_arrays, vp->num_inputs); */ 291 292 return GL_TRUE; 293} 294 295 296/** 297 * Compute the memory range occupied by the arrays. 298 */ 299static void 300get_arrays_bounds(const struct st_vertex_program *vp, 301 const struct st_vp_variant *vpv, 302 const struct gl_client_array **arrays, 303 GLuint max_index, 304 const GLubyte **low, const GLubyte **high) 305{ 306 const GLubyte *low_addr = NULL; 307 const GLubyte *high_addr = NULL; 308 GLuint attr; 309 310 /* debug_printf("get_arrays_bounds: Handling %u attrs\n", vpv->num_inputs); */ 311 312 for (attr = 0; attr < vpv->num_inputs; attr++) { 313 const GLuint mesaAttr = vp->index_to_input[attr]; 314 const GLint stride = arrays[mesaAttr]->StrideB; 315 const GLubyte *start = arrays[mesaAttr]->Ptr; 316 const unsigned sz = (arrays[mesaAttr]->Size * 317 _mesa_sizeof_type(arrays[mesaAttr]->Type)); 318 const GLubyte *end = start + (max_index * stride) + sz; 319 320 /* debug_printf("attr %u: stride %d size %u start %p end %p\n", 321 attr, stride, sz, start, end); */ 322 323 if (attr == 0) { 324 low_addr = start; 325 high_addr = end; 326 } 327 else { 328 low_addr = MIN2(low_addr, start); 329 high_addr = MAX2(high_addr, end); 330 } 331 } 332 333 *low = low_addr; 334 *high = high_addr; 335} 336 337 338/** 339 * Set up for drawing interleaved arrays that all live in one VBO 340 * or all live in user space. 341 * \param vbuffer returns vertex buffer info 342 * \param velements returns vertex element info 343 */ 344static void 345setup_interleaved_attribs(struct gl_context *ctx, 346 const struct st_vertex_program *vp, 347 const struct st_vp_variant *vpv, 348 const struct gl_client_array **arrays, 349 GLuint max_index, 350 GLboolean userSpace, 351 struct pipe_vertex_buffer *vbuffer, 352 struct pipe_vertex_element velements[]) 353{ 354 struct st_context *st = st_context(ctx); 355 struct pipe_context *pipe = st->pipe; 356 GLuint attr; 357 const GLubyte *offset0 = NULL; 358 359 for (attr = 0; attr < vpv->num_inputs; attr++) { 360 const GLuint mesaAttr = vp->index_to_input[attr]; 361 struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj; 362 struct st_buffer_object *stobj = st_buffer_object(bufobj); 363 GLsizei stride = arrays[mesaAttr]->StrideB; 364 365 /*printf("stobj %u = %p\n", attr, (void*)stobj);*/ 366 367 if (attr == 0) { 368 const GLubyte *low, *high; 369 370 get_arrays_bounds(vp, vpv, arrays, max_index, &low, &high); 371 /* debug_printf("buffer range: %p %p range %d max index %u\n", 372 low, high, high - low, max_index); */ 373 374 offset0 = low; 375 if (userSpace) { 376 vbuffer->buffer = 377 pipe_user_buffer_create(pipe->screen, (void *) low, high - low, 378 PIPE_BIND_VERTEX_BUFFER); 379 vbuffer->buffer_offset = 0; 380 } 381 else { 382 vbuffer->buffer = NULL; 383 pipe_resource_reference(&vbuffer->buffer, stobj->buffer); 384 vbuffer->buffer_offset = pointer_to_offset(low); 385 } 386 vbuffer->stride = stride; /* in bytes */ 387 vbuffer->max_index = max_index; 388 } 389 390 /* 391 if (arrays[mesaAttr]->InstanceDivisor) 392 vbuffer[attr].max_index = arrays[mesaAttr]->_MaxElement; 393 else 394 vbuffer[attr].max_index = max_index; 395 */ 396 397 velements[attr].src_offset = 398 (unsigned) (arrays[mesaAttr]->Ptr - offset0); 399 velements[attr].instance_divisor = arrays[mesaAttr]->InstanceDivisor; 400 velements[attr].vertex_buffer_index = 0; 401 velements[attr].src_format = 402 st_pipe_vertex_format(arrays[mesaAttr]->Type, 403 arrays[mesaAttr]->Size, 404 arrays[mesaAttr]->Format, 405 arrays[mesaAttr]->Normalized); 406 assert(velements[attr].src_format); 407 } 408} 409 410 411/** 412 * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each 413 * vertex attribute. 414 * \param vbuffer returns vertex buffer info 415 * \param velements returns vertex element info 416 */ 417static void 418setup_non_interleaved_attribs(struct gl_context *ctx, 419 const struct st_vertex_program *vp, 420 const struct st_vp_variant *vpv, 421 const struct gl_client_array **arrays, 422 GLuint max_index, 423 GLboolean *userSpace, 424 struct pipe_vertex_buffer vbuffer[], 425 struct pipe_vertex_element velements[]) 426{ 427 struct st_context *st = st_context(ctx); 428 struct pipe_context *pipe = st->pipe; 429 GLuint attr; 430 431 for (attr = 0; attr < vpv->num_inputs; attr++) { 432 const GLuint mesaAttr = vp->index_to_input[attr]; 433 struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj; 434 GLsizei stride = arrays[mesaAttr]->StrideB; 435 436 *userSpace = GL_FALSE; 437 438 if (bufobj && bufobj->Name) { 439 /* Attribute data is in a VBO. 440 * Recall that for VBOs, the gl_client_array->Ptr field is 441 * really an offset from the start of the VBO, not a pointer. 442 */ 443 struct st_buffer_object *stobj = st_buffer_object(bufobj); 444 assert(stobj->buffer); 445 /*printf("stobj %u = %p\n", attr, (void*) stobj);*/ 446 447 vbuffer[attr].buffer = NULL; 448 pipe_resource_reference(&vbuffer[attr].buffer, stobj->buffer); 449 vbuffer[attr].buffer_offset = pointer_to_offset(arrays[mesaAttr]->Ptr); 450 } 451 else { 452 /* attribute data is in user-space memory, not a VBO */ 453 uint bytes; 454 /*printf("user-space array %d stride %d\n", attr, stride);*/ 455 456 *userSpace = GL_TRUE; 457 458 /* wrap user data */ 459 if (arrays[mesaAttr]->Ptr) { 460 /* user's vertex array */ 461 if (arrays[mesaAttr]->StrideB) { 462 bytes = arrays[mesaAttr]->StrideB * (max_index + 1); 463 } 464 else { 465 bytes = arrays[mesaAttr]->Size 466 * _mesa_sizeof_type(arrays[mesaAttr]->Type); 467 } 468 vbuffer[attr].buffer = 469 pipe_user_buffer_create(pipe->screen, 470 (void *) arrays[mesaAttr]->Ptr, bytes, 471 PIPE_BIND_VERTEX_BUFFER); 472 } 473 else { 474 /* no array, use ctx->Current.Attrib[] value */ 475 bytes = sizeof(ctx->Current.Attrib[0]); 476 vbuffer[attr].buffer = 477 pipe_user_buffer_create(pipe->screen, 478 (void *) ctx->Current.Attrib[mesaAttr], 479 bytes, 480 PIPE_BIND_VERTEX_BUFFER); 481 stride = 0; 482 } 483 484 vbuffer[attr].buffer_offset = 0; 485 } 486 487 assert(velements[attr].src_offset <= 2048); /* 11-bit field */ 488 489 /* common-case setup */ 490 vbuffer[attr].stride = stride; /* in bytes */ 491 if (arrays[mesaAttr]->InstanceDivisor) 492 vbuffer[attr].max_index = arrays[mesaAttr]->_MaxElement; 493 else 494 vbuffer[attr].max_index = max_index; 495 496 velements[attr].src_offset = 0; 497 velements[attr].instance_divisor = arrays[mesaAttr]->InstanceDivisor; 498 velements[attr].vertex_buffer_index = attr; 499 velements[attr].src_format 500 = st_pipe_vertex_format(arrays[mesaAttr]->Type, 501 arrays[mesaAttr]->Size, 502 arrays[mesaAttr]->Format, 503 arrays[mesaAttr]->Normalized); 504 assert(velements[attr].src_format); 505 } 506} 507 508 509static void 510setup_index_buffer(struct gl_context *ctx, 511 const struct _mesa_index_buffer *ib, 512 struct pipe_index_buffer *ibuffer) 513{ 514 struct st_context *st = st_context(ctx); 515 struct pipe_context *pipe = st->pipe; 516 517 memset(ibuffer, 0, sizeof(*ibuffer)); 518 if (ib) { 519 struct gl_buffer_object *bufobj = ib->obj; 520 521 switch (ib->type) { 522 case GL_UNSIGNED_INT: 523 ibuffer->index_size = 4; 524 break; 525 case GL_UNSIGNED_SHORT: 526 ibuffer->index_size = 2; 527 break; 528 case GL_UNSIGNED_BYTE: 529 ibuffer->index_size = 1; 530 break; 531 default: 532 assert(0); 533 return; 534 } 535 536 /* get/create the index buffer object */ 537 if (bufobj && bufobj->Name) { 538 /* elements/indexes are in a real VBO */ 539 struct st_buffer_object *stobj = st_buffer_object(bufobj); 540 pipe_resource_reference(&ibuffer->buffer, stobj->buffer); 541 ibuffer->offset = pointer_to_offset(ib->ptr); 542 } 543 else { 544 /* element/indicies are in user space memory */ 545 ibuffer->buffer = 546 pipe_user_buffer_create(pipe->screen, (void *) ib->ptr, 547 ib->count * ibuffer->index_size, 548 PIPE_BIND_INDEX_BUFFER); 549 } 550 } 551} 552 553/** 554 * Prior to drawing, check that any uniforms referenced by the 555 * current shader have been set. If a uniform has not been set, 556 * issue a warning. 557 */ 558static void 559check_uniforms(struct gl_context *ctx) 560{ 561 struct gl_shader_program *shProg[3] = { 562 ctx->Shader.CurrentVertexProgram, 563 ctx->Shader.CurrentGeometryProgram, 564 ctx->Shader.CurrentFragmentProgram, 565 }; 566 unsigned j; 567 568 for (j = 0; j < 3; j++) { 569 unsigned i; 570 571 if (shProg[j] == NULL || !shProg[j]->LinkStatus) 572 continue; 573 574 for (i = 0; i < shProg[j]->Uniforms->NumUniforms; i++) { 575 const struct gl_uniform *u = &shProg[j]->Uniforms->Uniforms[i]; 576 if (!u->Initialized) { 577 _mesa_warning(ctx, 578 "Using shader with uninitialized uniform: %s", 579 u->Name); 580 } 581 } 582 } 583} 584 585 586/** 587 * Translate OpenGL primtive type (GL_POINTS, GL_TRIANGLE_STRIP, etc) to 588 * the corresponding Gallium type. 589 */ 590static unsigned 591translate_prim(const struct gl_context *ctx, unsigned prim) 592{ 593 /* GL prims should match Gallium prims, spot-check a few */ 594 assert(GL_POINTS == PIPE_PRIM_POINTS); 595 assert(GL_QUADS == PIPE_PRIM_QUADS); 596 assert(GL_TRIANGLE_STRIP_ADJACENCY == PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY); 597 598 /* Avoid quadstrips if it's easy to do so: 599 * Note: it's imporant to do the correct trimming if we change the prim type! 600 * We do that wherever this function is called. 601 */ 602 if (prim == GL_QUAD_STRIP && 603 ctx->Light.ShadeModel != GL_FLAT && 604 ctx->Polygon.FrontMode == GL_FILL && 605 ctx->Polygon.BackMode == GL_FILL) 606 prim = GL_TRIANGLE_STRIP; 607 608 return prim; 609} 610 611 612 613/** 614 * This function gets plugged into the VBO module and is called when 615 * we have something to render. 616 * Basically, translate the information into the format expected by gallium. 617 */ 618void 619st_draw_vbo(struct gl_context *ctx, 620 const struct gl_client_array **arrays, 621 const struct _mesa_prim *prims, 622 GLuint nr_prims, 623 const struct _mesa_index_buffer *ib, 624 GLboolean index_bounds_valid, 625 GLuint min_index, 626 GLuint max_index) 627{ 628 struct st_context *st = st_context(ctx); 629 struct pipe_context *pipe = st->pipe; 630 const struct st_vertex_program *vp; 631 const struct st_vp_variant *vpv; 632 struct pipe_vertex_buffer vbuffer[PIPE_MAX_SHADER_INPUTS]; 633 GLuint attr; 634 struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS]; 635 unsigned num_vbuffers, num_velements; 636 struct pipe_index_buffer ibuffer; 637 GLboolean userSpace = GL_FALSE; 638 GLboolean vertDataEdgeFlags; 639 struct pipe_draw_info info; 640 unsigned i; 641 642 /* Mesa core state should have been validated already */ 643 assert(ctx->NewState == 0x0); 644 645 /* Gallium probably doesn't want this in some cases. */ 646 if (!index_bounds_valid) 647 if (!vbo_all_varyings_in_vbos(arrays)) 648 vbo_get_minmax_index(ctx, prims, ib, &min_index, &max_index); 649 650 /* sanity check for pointer arithmetic below */ 651 assert(sizeof(arrays[0]->Ptr[0]) == 1); 652 653 vertDataEdgeFlags = arrays[VERT_ATTRIB_EDGEFLAG]->BufferObj && 654 arrays[VERT_ATTRIB_EDGEFLAG]->BufferObj->Name; 655 if (vertDataEdgeFlags != st->vertdata_edgeflags) { 656 st->vertdata_edgeflags = vertDataEdgeFlags; 657 st->dirty.st |= ST_NEW_EDGEFLAGS_DATA; 658 } 659 660 st_validate_state(st); 661 662 /* must get these after state validation! */ 663 vp = st->vp; 664 vpv = st->vp_variant; 665 666#if 0 667 if (MESA_VERBOSE & VERBOSE_GLSL) { 668 check_uniforms(ctx); 669 } 670#else 671 (void) check_uniforms; 672#endif 673 674 memset(velements, 0, sizeof(struct pipe_vertex_element) * vpv->num_inputs); 675 /* 676 * Setup the vbuffer[] and velements[] arrays. 677 */ 678 if (is_interleaved_arrays(vp, vpv, arrays, &userSpace)) { 679 /*printf("Draw interleaved\n");*/ 680 setup_interleaved_attribs(ctx, vp, vpv, arrays, max_index, userSpace, 681 vbuffer, velements); 682 num_vbuffers = 1; 683 num_velements = vpv->num_inputs; 684 if (num_velements == 0) 685 num_vbuffers = 0; 686 } 687 else { 688 /*printf("Draw non-interleaved\n");*/ 689 setup_non_interleaved_attribs(ctx, vp, vpv, arrays, max_index, 690 &userSpace, vbuffer, velements); 691 num_vbuffers = vpv->num_inputs; 692 num_velements = vpv->num_inputs; 693 } 694 695#if 0 696 { 697 GLuint i; 698 for (i = 0; i < num_vbuffers; i++) { 699 printf("buffers[%d].stride = %u\n", i, vbuffer[i].stride); 700 printf("buffers[%d].max_index = %u\n", i, vbuffer[i].max_index); 701 printf("buffers[%d].buffer_offset = %u\n", i, vbuffer[i].buffer_offset); 702 printf("buffers[%d].buffer = %p\n", i, (void*) vbuffer[i].buffer); 703 } 704 for (i = 0; i < num_velements; i++) { 705 printf("vlements[%d].vbuffer_index = %u\n", i, velements[i].vertex_buffer_index); 706 printf("vlements[%d].src_offset = %u\n", i, velements[i].src_offset); 707 printf("vlements[%d].format = %s\n", i, util_format_name(velements[i].src_format)); 708 } 709 } 710#endif 711 712 pipe->set_vertex_buffers(pipe, num_vbuffers, vbuffer); 713 cso_set_vertex_elements(st->cso_context, num_velements, velements); 714 715 setup_index_buffer(ctx, ib, &ibuffer); 716 pipe->set_index_buffer(pipe, &ibuffer); 717 718 util_draw_init_info(&info); 719 if (ib) { 720 info.indexed = TRUE; 721 if (min_index != ~0 && max_index != ~0) { 722 info.min_index = min_index; 723 info.max_index = max_index; 724 } 725 } 726 727 info.primitive_restart = st->ctx->Array.PrimitiveRestart; 728 info.restart_index = st->ctx->Array.RestartIndex; 729 730 /* do actual drawing */ 731 for (i = 0; i < nr_prims; i++) { 732 info.mode = translate_prim( ctx, prims[i].mode ); 733 info.start = prims[i].start; 734 info.count = prims[i].count; 735 info.instance_count = prims[i].num_instances; 736 info.index_bias = prims[i].basevertex; 737 if (!ib) { 738 info.min_index = info.start; 739 info.max_index = info.start + info.count - 1; 740 } 741 742 if (u_trim_pipe_prim(info.mode, &info.count)) 743 pipe->draw_vbo(pipe, &info); 744 } 745 746 pipe_resource_reference(&ibuffer.buffer, NULL); 747 748 /* unreference buffers (frees wrapped user-space buffer objects) */ 749 for (attr = 0; attr < num_vbuffers; attr++) { 750 pipe_resource_reference(&vbuffer[attr].buffer, NULL); 751 assert(!vbuffer[attr].buffer); 752 } 753 754 if (userSpace) 755 { 756 pipe->set_vertex_buffers(pipe, 0, NULL); 757 } 758} 759 760 761void st_init_draw( struct st_context *st ) 762{ 763 struct gl_context *ctx = st->ctx; 764 765 vbo_set_draw_func(ctx, st_draw_vbo); 766 767#if FEATURE_feedback || FEATURE_rastpos 768 st->draw = draw_create(st->pipe); /* for selection/feedback */ 769 770 /* Disable draw options that might convert points/lines to tris, etc. 771 * as that would foul-up feedback/selection mode. 772 */ 773 draw_wide_line_threshold(st->draw, 1000.0f); 774 draw_wide_point_threshold(st->draw, 1000.0f); 775 draw_enable_line_stipple(st->draw, FALSE); 776 draw_enable_point_sprites(st->draw, FALSE); 777#endif 778} 779 780 781void st_destroy_draw( struct st_context *st ) 782{ 783#if FEATURE_feedback || FEATURE_rastpos 784 draw_destroy(st->draw); 785#endif 786} 787 788 789