src/gallium/auxiliary/draw/draw_context.c

   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   * Authors:
  30   *   Keith Whitwell <keith@tungstengraphics.com>
  31   */
  32
  33
  34 #include "pipe/p_context.h"
  35 #include "util/u_memory.h"
  36 #include "util/u_math.h"
  37 #include "util/u_cpu_detect.h"
  38 #include "util/u_inlines.h"
  39 #include "draw_context.h"
  40 #include "draw_vs.h"
  41 #include "draw_gs.h"
  42
  43 #if HAVE_LLVM
  44 #include "gallivm/lp_bld_init.h"
  45 #include "draw_llvm.h"
  46
  47 static boolean
  48 draw_get_option_use_llvm(void)
  49 {
  50    static boolean first = TRUE;
  51    static boolean value;
  52    if (first) {
  53       first = FALSE;
  54       value = debug_get_bool_option("DRAW_USE_LLVM", TRUE);
  55
  56 #ifdef PIPE_ARCH_X86
  57       util_cpu_detect();
  58       /* require SSE2 due to LLVM PR6960. */
  59       if (!util_cpu_caps.has_sse2)
  60          value = FALSE;
  61 #endif
  62    }
  63    return value;
  64 }
  65 #endif
  66
  67
  68 /**
  69  * Create new draw module context with gallivm state for LLVM JIT.
  70  */
  71 static struct draw_context *
  72 draw_create_context(struct pipe_context *pipe, boolean try_llvm,
  73                     struct gallivm_state *gallivm)
  74 {
  75    struct draw_context *draw = CALLOC_STRUCT( draw_context );
  76    if (draw == NULL)
  77       goto err_out;
  78
  79 #if HAVE_LLVM
  80    if (try_llvm && draw_get_option_use_llvm()) {
  81       if (!gallivm) {
  82          gallivm = gallivm_create();
  83          draw->own_gallivm = gallivm;
  84       }
  85
  86       if (!gallivm)
  87          goto err_destroy;
  88
  89       draw->llvm = draw_llvm_create(draw, gallivm);
  90
  91       if (!draw->llvm)
  92          goto err_destroy;
  93    }
  94 #endif
  95
  96    if (!draw_init(draw))
  97       goto err_destroy;
  98
  99    draw->pipe = pipe;
 100
 101    return draw;
 102
 103 err_destroy:
 104    draw_destroy( draw );
 105 err_out:
 106    return NULL;
 107 }
 108
 109
 110 /**
 111  * Create new draw module context, with LLVM JIT.
 112  */
 113 struct draw_context *
 114 draw_create(struct pipe_context *pipe)
 115 {
 116    return draw_create_context(pipe, TRUE, NULL);
 117 }
 118
 119
 120 /**
 121  * Create a new draw context, without LLVM JIT.
 122  */
 123 struct draw_context *
 124 draw_create_no_llvm(struct pipe_context *pipe)
 125 {
 126    return draw_create_context(pipe, FALSE, NULL);
 127 }
 128
 129
 130 /**
 131  * Create new draw module context with gallivm state for LLVM JIT.
 132  */
 133 struct draw_context *
 134 draw_create_gallivm(struct pipe_context *pipe, struct gallivm_state *gallivm)
 135 {
 136    return draw_create_context(pipe, TRUE, gallivm);
 137 }
 138
 139
 140 boolean draw_init(struct draw_context *draw)
 141 {
 142    /*
 143     * Note that several functions compute the clipmask of the predefined
 144     * formats with hardcoded formulas instead of using these. So modifications
 145     * here must be reflected there too.
 146     */
 147
 148    ASSIGN_4V( draw->plane[0], -1,  0,  0, 1 );
 149    ASSIGN_4V( draw->plane[1],  1,  0,  0, 1 );
 150    ASSIGN_4V( draw->plane[2],  0, -1,  0, 1 );
 151    ASSIGN_4V( draw->plane[3],  0,  1,  0, 1 );
 152    ASSIGN_4V( draw->plane[4],  0,  0,  1, 1 ); /* yes these are correct */
 153    ASSIGN_4V( draw->plane[5],  0,  0, -1, 1 ); /* mesa's a bit wonky */
 154    draw->nr_planes = 6;
 155    draw->clip_xy = TRUE;
 156    draw->clip_z = TRUE;
 157
 158
 159    draw->reduced_prim = ~0; /* != any of PIPE_PRIM_x */
 160
 161
 162    if (!draw_pipeline_init( draw ))
 163       return FALSE;
 164
 165    if (!draw_pt_init( draw ))
 166       return FALSE;
 167
 168    if (!draw_vs_init( draw ))
 169       return FALSE;
 170
 171    if (!draw_gs_init( draw ))
 172       return FALSE;
 173
 174    return TRUE;
 175 }
 176
 177
 178 void draw_destroy( struct draw_context *draw )
 179 {
 180    struct pipe_context *pipe;
 181    int i, j;
 182
 183    if (!draw)
 184       return;
 185
 186    pipe = draw->pipe;
 187
 188    /* free any rasterizer CSOs that we may have created.
 189     */
 190    for (i = 0; i < 2; i++) {
 191       for (j = 0; j < 2; j++) {
 192          if (draw->rasterizer_no_cull[i][j]) {
 193             pipe->delete_rasterizer_state(pipe, draw->rasterizer_no_cull[i][j]);
 194          }
 195       }
 196    }
 197
 198    for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
 199       pipe_resource_reference(&draw->pt.vertex_buffer[i].buffer, NULL);
 200    }
 201
 202    /* Not so fast -- we're just borrowing this at the moment.
 203     *
 204    if (draw->render)
 205       draw->render->destroy( draw->render );
 206    */
 207
 208    draw_pipeline_destroy( draw );
 209    draw_pt_destroy( draw );
 210    draw_vs_destroy( draw );
 211    draw_gs_destroy( draw );
 212 #ifdef HAVE_LLVM
 213    if (draw->llvm)
 214       draw_llvm_destroy( draw->llvm );
 215
 216    if (draw->own_gallivm)
 217       gallivm_destroy(draw->own_gallivm);
 218 #endif
 219
 220    FREE( draw );
 221 }
 222
 223
 224
 225 void draw_flush( struct draw_context *draw )
 226 {
 227    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 228 }
 229
 230
 231 /**
 232  * Specify the Minimum Resolvable Depth factor for polygon offset.
 233  * This factor potentially depends on the number of Z buffer bits,
 234  * the rasterization algorithm and the arithmetic performed on Z
 235  * values between vertex shading and rasterization.  It will vary
 236  * from one driver to another.
 237  */
 238 void draw_set_mrd(struct draw_context *draw, double mrd)
 239 {
 240    draw->mrd = mrd;
 241 }
 242
 243
 244 static void update_clip_flags( struct draw_context *draw )
 245 {
 246    draw->clip_xy = !draw->driver.bypass_clip_xy;
 247    draw->guard_band_xy = (!draw->driver.bypass_clip_xy &&
 248                           draw->driver.guard_band_xy);
 249    draw->clip_z = (!draw->driver.bypass_clip_z &&
 250                    !draw->depth_clamp);
 251    draw->clip_user = (draw->nr_planes > 6);
 252 }
 253
 254 /**
 255  * Register new primitive rasterization/rendering state.
 256  * This causes the drawing pipeline to be rebuilt.
 257  */
 258 void draw_set_rasterizer_state( struct draw_context *draw,
 259                                 const struct pipe_rasterizer_state *raster,
 260                                 void *rast_handle )
 261 {
 262    if (!draw->suspend_flushing) {
 263       draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 264
 265       draw->rasterizer = raster;
 266       draw->rast_handle = rast_handle;
 267
 268   }
 269 }
 270
 271 /* With a little more work, llvmpipe will be able to turn this off and
 272  * do its own x/y clipping.
 273  *
 274  * Some hardware can turn off clipping altogether - in particular any
 275  * hardware with a TNL unit can do its own clipping, even if it is
 276  * relying on the draw module for some other reason.
 277  */
 278 void draw_set_driver_clipping( struct draw_context *draw,
 279                                boolean bypass_clip_xy,
 280                                boolean bypass_clip_z,
 281                                boolean guard_band_xy)
 282 {
 283    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 284
 285    draw->driver.bypass_clip_xy = bypass_clip_xy;
 286    draw->driver.bypass_clip_z = bypass_clip_z;
 287    draw->driver.guard_band_xy = guard_band_xy;
 288    update_clip_flags(draw);
 289 }
 290
 291
 292 /**
 293  * Plug in the primitive rendering/rasterization stage (which is the last
 294  * stage in the drawing pipeline).
 295  * This is provided by the device driver.
 296  */
 297 void draw_set_rasterize_stage( struct draw_context *draw,
 298                                struct draw_stage *stage )
 299 {
 300    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 301
 302    draw->pipeline.rasterize = stage;
 303 }
 304
 305
 306 /**
 307  * Set the draw module's clipping state.
 308  */
 309 void draw_set_clip_state( struct draw_context *draw,
 310                           const struct pipe_clip_state *clip )
 311 {
 312    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 313
 314    assert(clip->nr <= PIPE_MAX_CLIP_PLANES);
 315    memcpy(&draw->plane[6], clip->ucp, clip->nr * sizeof(clip->ucp[0]));
 316    draw->nr_planes = 6 + clip->nr;
 317    draw->depth_clamp = clip->depth_clamp;
 318
 319    draw->pt.user.planes = (float (*) [DRAW_TOTAL_CLIP_PLANES][4]) &(draw->plane[0]);
 320
 321    update_clip_flags(draw);
 322 }
 323
 324
 325 /**
 326  * Set the draw module's viewport state.
 327  */
 328 void draw_set_viewport_state( struct draw_context *draw,
 329                               const struct pipe_viewport_state *viewport )
 330 {
 331    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 332    draw->viewport = *viewport; /* struct copy */
 333    draw->identity_viewport = (viewport->scale[0] == 1.0f &&
 334                               viewport->scale[1] == 1.0f &&
 335                               viewport->scale[2] == 1.0f &&
 336                               viewport->scale[3] == 1.0f &&
 337                               viewport->translate[0] == 0.0f &&
 338                               viewport->translate[1] == 0.0f &&
 339                               viewport->translate[2] == 0.0f &&
 340                               viewport->translate[3] == 0.0f);
 341
 342    draw_vs_set_viewport( draw, viewport );
 343 }
 344
 345
 346
 347 void
 348 draw_set_vertex_buffers(struct draw_context *draw,
 349                         unsigned count,
 350                         const struct pipe_vertex_buffer *buffers)
 351 {
 352    assert(count <= PIPE_MAX_ATTRIBS);
 353
 354    util_copy_vertex_buffers(draw->pt.vertex_buffer,
 355                             &draw->pt.nr_vertex_buffers,
 356                             buffers, count);
 357 }
 358
 359
 360 void
 361 draw_set_vertex_elements(struct draw_context *draw,
 362                          unsigned count,
 363                          const struct pipe_vertex_element *elements)
 364 {
 365    assert(count <= PIPE_MAX_ATTRIBS);
 366
 367    memcpy(draw->pt.vertex_element, elements, count * sizeof(elements[0]));
 368    draw->pt.nr_vertex_elements = count;
 369 }
 370
 371
 372 /**
 373  * Tell drawing context where to find mapped vertex buffers.
 374  */
 375 void
 376 draw_set_mapped_vertex_buffer(struct draw_context *draw,
 377                               unsigned attr, const void *buffer)
 378 {
 379    draw->pt.user.vbuffer[attr] = buffer;
 380 }
 381
 382
 383 void
 384 draw_set_mapped_constant_buffer(struct draw_context *draw,
 385                                 unsigned shader_type,
 386                                 unsigned slot,
 387                                 const void *buffer,
 388                                 unsigned size )
 389 {
 390    debug_assert(shader_type == PIPE_SHADER_VERTEX ||
 391                 shader_type == PIPE_SHADER_GEOMETRY);
 392    debug_assert(slot < PIPE_MAX_CONSTANT_BUFFERS);
 393
 394    switch (shader_type) {
 395    case PIPE_SHADER_VERTEX:
 396       draw->pt.user.vs_constants[slot] = buffer;
 397       draw->pt.user.vs_constants_size[slot] = size;
 398       draw_vs_set_constants(draw, slot, buffer, size);
 399       break;
 400    case PIPE_SHADER_GEOMETRY:
 401       draw->pt.user.gs_constants[slot] = buffer;
 402       draw->pt.user.gs_constants_size[slot] = size;
 403       draw_gs_set_constants(draw, slot, buffer, size);
 404       break;
 405    default:
 406       assert(0 && "invalid shader type in draw_set_mapped_constant_buffer");
 407    }
 408 }
 409
 410
 411 /**
 412  * Tells the draw module to draw points with triangles if their size
 413  * is greater than this threshold.
 414  */
 415 void
 416 draw_wide_point_threshold(struct draw_context *draw, float threshold)
 417 {
 418    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 419    draw->pipeline.wide_point_threshold = threshold;
 420 }
 421
 422
 423 /**
 424  * Should the draw module handle point->quad conversion for drawing sprites?
 425  */
 426 void
 427 draw_wide_point_sprites(struct draw_context *draw, boolean draw_sprite)
 428 {
 429    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 430    draw->pipeline.wide_point_sprites = draw_sprite;
 431 }
 432
 433
 434 /**
 435  * Tells the draw module to draw lines with triangles if their width
 436  * is greater than this threshold.
 437  */
 438 void
 439 draw_wide_line_threshold(struct draw_context *draw, float threshold)
 440 {
 441    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 442    draw->pipeline.wide_line_threshold = roundf(threshold);
 443 }
 444
 445
 446 /**
 447  * Tells the draw module whether or not to implement line stipple.
 448  */
 449 void
 450 draw_enable_line_stipple(struct draw_context *draw, boolean enable)
 451 {
 452    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 453    draw->pipeline.line_stipple = enable;
 454 }
 455
 456
 457 /**
 458  * Tells draw module whether to convert points to quads for sprite mode.
 459  */
 460 void
 461 draw_enable_point_sprites(struct draw_context *draw, boolean enable)
 462 {
 463    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 464    draw->pipeline.point_sprite = enable;
 465 }
 466
 467
 468 void
 469 draw_set_force_passthrough( struct draw_context *draw, boolean enable )
 470 {
 471    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 472    draw->force_passthrough = enable;
 473 }
 474
 475
 476
 477 /**
 478  * Allocate an extra vertex/geometry shader vertex attribute, if it doesn't
 479  * exist already.
 480  *
 481  * This is used by some of the optional draw module stages such
 482  * as wide_point which may need to allocate additional generic/texcoord
 483  * attributes.
 484  */
 485 int
 486 draw_alloc_extra_vertex_attrib(struct draw_context *draw,
 487                                uint semantic_name, uint semantic_index)
 488 {
 489    int slot;
 490    uint num_outputs;
 491    uint n;
 492
 493    slot = draw_find_shader_output(draw, semantic_name, semantic_index);
 494    if (slot > 0) {
 495       return slot;
 496    }
 497
 498    num_outputs = draw_current_shader_outputs(draw);
 499    n = draw->extra_shader_outputs.num;
 500
 501    assert(n < Elements(draw->extra_shader_outputs.semantic_name));
 502
 503    draw->extra_shader_outputs.semantic_name[n] = semantic_name;
 504    draw->extra_shader_outputs.semantic_index[n] = semantic_index;
 505    draw->extra_shader_outputs.slot[n] = num_outputs + n;
 506    draw->extra_shader_outputs.num++;
 507
 508    return draw->extra_shader_outputs.slot[n];
 509 }
 510
 511
 512 /**
 513  * Remove all extra vertex attributes that were allocated with
 514  * draw_alloc_extra_vertex_attrib().
 515  */
 516 void
 517 draw_remove_extra_vertex_attribs(struct draw_context *draw)
 518 {
 519    draw->extra_shader_outputs.num = 0;
 520 }
 521
 522
 523 /**
 524  * If a geometry shader is present, return its info, else the vertex shader's
 525  * info.
 526  */
 527 struct tgsi_shader_info *
 528 draw_get_shader_info(const struct draw_context *draw)
 529 {
 530
 531    if (draw->gs.geometry_shader) {
 532       return &draw->gs.geometry_shader->info;
 533    } else {
 534       return &draw->vs.vertex_shader->info;
 535    }
 536 }
 537
 538
 539 /**
 540  * Ask the draw module for the location/slot of the given vertex attribute in
 541  * a post-transformed vertex.
 542  *
 543  * With this function, drivers that use the draw module should have no reason
 544  * to track the current vertex/geometry shader.
 545  *
 546  * Note that the draw module may sometimes generate vertices with extra
 547  * attributes (such as texcoords for AA lines).  The driver can call this
 548  * function to find those attributes.
 549  *
 550  * Zero is returned if the attribute is not found since this is
 551  * a don't care / undefined situtation.  Returning -1 would be a bit more
 552  * work for the drivers.
 553  */
 554 int
 555 draw_find_shader_output(const struct draw_context *draw,
 556                         uint semantic_name, uint semantic_index)
 557 {
 558    const struct tgsi_shader_info *info = draw_get_shader_info(draw);
 559    uint i;
 560
 561    for (i = 0; i < info->num_outputs; i++) {
 562       if (info->output_semantic_name[i] == semantic_name &&
 563           info->output_semantic_index[i] == semantic_index)
 564          return i;
 565    }
 566
 567    /* Search the extra vertex attributes */
 568    for (i = 0; i < draw->extra_shader_outputs.num; i++) {
 569       if (draw->extra_shader_outputs.semantic_name[i] == semantic_name &&
 570           draw->extra_shader_outputs.semantic_index[i] == semantic_index) {
 571          return draw->extra_shader_outputs.slot[i];
 572       }
 573    }
 574
 575    return 0;
 576 }
 577
 578
 579 /**
 580  * Return total number of the shader outputs.  This function is similar to
 581  * draw_current_shader_outputs() but this function also counts any extra
 582  * vertex/geometry output attributes that may be filled in by some draw
 583  * stages (such as AA point, AA line).
 584  *
 585  * If geometry shader is present, its output will be returned,
 586  * if not vertex shader is used.
 587  */
 588 uint
 589 draw_num_shader_outputs(const struct draw_context *draw)
 590 {
 591    const struct tgsi_shader_info *info = draw_get_shader_info(draw);
 592    uint count;
 593
 594    count = info->num_outputs;
 595    count += draw->extra_shader_outputs.num;
 596
 597    return count;
 598 }
 599
 600
 601 /**
 602  * Provide TGSI sampler objects for vertex/geometry shaders that use
 603  * texture fetches.
 604  * This might only be used by software drivers for the time being.
 605  */
 606 void
 607 draw_texture_samplers(struct draw_context *draw,
 608                       uint shader,
 609                       uint num_samplers,
 610                       struct tgsi_sampler **samplers)
 611 {
 612    if (shader == PIPE_SHADER_VERTEX) {
 613       draw->vs.num_samplers = num_samplers;
 614       draw->vs.samplers = samplers;
 615    } else {
 616       debug_assert(shader == PIPE_SHADER_GEOMETRY);
 617       draw->gs.num_samplers = num_samplers;
 618       draw->gs.samplers = samplers;
 619    }
 620 }
 621
 622
 623
 624
 625 void draw_set_render( struct draw_context *draw,
 626                       struct vbuf_render *render )
 627 {
 628    draw->render = render;
 629 }
 630
 631
 632 void
 633 draw_set_index_buffer(struct draw_context *draw,
 634                       const struct pipe_index_buffer *ib)
 635 {
 636    if (ib)
 637       memcpy(&draw->pt.index_buffer, ib, sizeof(draw->pt.index_buffer));
 638    else
 639       memset(&draw->pt.index_buffer, 0, sizeof(draw->pt.index_buffer));
 640 }
 641
 642
 643 /**
 644  * Tell drawing context where to find mapped index/element buffer.
 645  */
 646 void
 647 draw_set_mapped_index_buffer(struct draw_context *draw,
 648                              const void *elements)
 649 {
 650     draw->pt.user.elts = elements;
 651 }
 652
 653
 654 /* Revamp me please:
 655  */
 656 void draw_do_flush( struct draw_context *draw, unsigned flags )
 657 {
 658    if (!draw->suspend_flushing)
 659    {
 660       assert(!draw->flushing); /* catch inadvertant recursion */
 661
 662       draw->flushing = TRUE;
 663
 664       draw_pipeline_flush( draw, flags );
 665
 666       draw->reduced_prim = ~0; /* is reduced_prim needed any more? */
 667
 668       draw->flushing = FALSE;
 669    }
 670 }
 671
 672
 673 /**
 674  * Return the number of output attributes produced by the geometry
 675  * shader, if present.  If no geometry shader, return the number of
 676  * outputs from the vertex shader.
 677  * \sa draw_num_shader_outputs
 678  */
 679 uint
 680 draw_current_shader_outputs(const struct draw_context *draw)
 681 {
 682    if (draw->gs.geometry_shader)
 683       return draw->gs.num_gs_outputs;
 684    return draw->vs.num_vs_outputs;
 685 }
 686
 687
 688 /**
 689  * Return the index of the shader output which will contain the
 690  * vertex position.
 691  */
 692 uint
 693 draw_current_shader_position_output(const struct draw_context *draw)
 694 {
 695    if (draw->gs.geometry_shader)
 696       return draw->gs.position_output;
 697    return draw->vs.position_output;
 698 }
 699
 700
 701 /**
 702  * Return a pointer/handle for a driver/CSO rasterizer object which
 703  * disabled culling, stippling, unfilled tris, etc.
 704  * This is used by some pipeline stages (such as wide_point, aa_line
 705  * and aa_point) which convert points/lines into triangles.  In those
 706  * cases we don't want to accidentally cull the triangles.
 707  *
 708  * \param scissor  should the rasterizer state enable scissoring?
 709  * \param flatshade  should the rasterizer state use flat shading?
 710  * \return  rasterizer CSO handle
 711  */
 712 void *
 713 draw_get_rasterizer_no_cull( struct draw_context *draw,
 714                              boolean scissor,
 715                              boolean flatshade )
 716 {
 717    if (!draw->rasterizer_no_cull[scissor][flatshade]) {
 718       /* create now */
 719       struct pipe_context *pipe = draw->pipe;
 720       struct pipe_rasterizer_state rast;
 721
 722       memset(&rast, 0, sizeof(rast));
 723       rast.scissor = scissor;
 724       rast.flatshade = flatshade;
 725       rast.front_ccw = 1;
 726       rast.gl_rasterization_rules = draw->rasterizer->gl_rasterization_rules;
 727
 728       draw->rasterizer_no_cull[scissor][flatshade] =
 729          pipe->create_rasterizer_state(pipe, &rast);
 730    }
 731    return draw->rasterizer_no_cull[scissor][flatshade];
 732 }
 733
 734 void
 735 draw_set_mapped_so_buffers(struct draw_context *draw,
 736                            void *buffers[PIPE_MAX_SO_BUFFERS],
 737                            unsigned num_buffers)
 738 {
 739    int i;
 740
 741    for (i = 0; i < num_buffers; ++i) {
 742       draw->so.buffers[i] = buffers[i];
 743    }
 744    draw->so.num_buffers = num_buffers;
 745 }
 746
 747 void
 748 draw_set_so_state(struct draw_context *draw,
 749                   struct pipe_stream_output_info *state)
 750 {
 751    memcpy(&draw->so.state,
 752           state,
 753           sizeof(struct pipe_stream_output_info));
 754 }
 755
 756 void
 757 draw_set_sampler_views(struct draw_context *draw,
 758                        struct pipe_sampler_view **views,
 759                        unsigned num)
 760 {
 761    unsigned i;
 762
 763    debug_assert(num <= PIPE_MAX_VERTEX_SAMPLERS);
 764
 765    for (i = 0; i < num; ++i)
 766       draw->sampler_views[i] = views[i];
 767    for (i = num; i < PIPE_MAX_VERTEX_SAMPLERS; ++i)
 768       draw->sampler_views[i] = NULL;
 769
 770    draw->num_sampler_views = num;
 771 }
 772
 773 void
 774 draw_set_samplers(struct draw_context *draw,
 775                   struct pipe_sampler_state **samplers,
 776                   unsigned num)
 777 {
 778    unsigned i;
 779
 780    debug_assert(num <= PIPE_MAX_VERTEX_SAMPLERS);
 781
 782    for (i = 0; i < num; ++i)
 783       draw->samplers[i] = samplers[i];
 784    for (i = num; i < PIPE_MAX_VERTEX_SAMPLERS; ++i)
 785       draw->samplers[i] = NULL;
 786
 787    draw->num_samplers = num;
 788
 789 #ifdef HAVE_LLVM
 790    if (draw->llvm)
 791       draw_llvm_set_sampler_state(draw);
 792 #endif
 793 }
 794
 795 void
 796 draw_set_mapped_texture(struct draw_context *draw,
 797                         unsigned sampler_idx,
 798                         uint32_t width, uint32_t height, uint32_t depth,
 799                         uint32_t first_level, uint32_t last_level,
 800                         uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
 801                         uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
 802                         const void *data[PIPE_MAX_TEXTURE_LEVELS])
 803 {
 804 #ifdef HAVE_LLVM
 805    if(draw->llvm)
 806       draw_llvm_set_mapped_texture(draw,
 807                                 sampler_idx,
 808                                 width, height, depth, first_level, last_level,
 809                                 row_stride, img_stride, data);
 810 #endif
 811 }