src/gallium/drivers/llvmpipe/lp_setup.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  * Tiling engine.
  30  *
  31  * Builds per-tile display lists and executes them on calls to
  32  * lp_setup_flush().
  33  */
  34
  35 #include <limits.h>
  36
  37 #include "pipe/p_defines.h"
  38 #include "util/u_framebuffer.h"
  39 #include "util/u_inlines.h"
  40 #include "util/u_memory.h"
  41 #include "util/u_pack_color.h"
  42 #include "lp_context.h"
  43 #include "lp_scene.h"
  44 #include "lp_scene_queue.h"
  45 #include "lp_texture.h"
  46 #include "lp_debug.h"
  47 #include "lp_fence.h"
  48 #include "lp_query.h"
  49 #include "lp_rast.h"
  50 #include "lp_setup_context.h"
  51 #include "lp_screen.h"
  52 #include "lp_state.h"
  53 #include "state_tracker/sw_winsys.h"
  54
  55 #include "draw/draw_context.h"
  56 #include "draw/draw_vbuf.h"
  57
  58
  59 static void set_scene_state( struct lp_setup_context *, enum setup_state );
  60
  61
  62 struct lp_scene *
  63 lp_setup_get_current_scene(struct lp_setup_context *setup)
  64 {
  65    if (!setup->scene) {
  66       set_scene_state( setup, SETUP_EMPTY );
  67    }
  68    return setup->scene;
  69 }
  70
  71
  72 /**
  73  * Check if the size of the current scene has exceeded the limit.
  74  * If so, flush/render it.
  75  */
  76 static void
  77 setup_check_scene_size_and_flush(struct lp_setup_context *setup)
  78 {
  79    if (setup->scene) {
  80       struct lp_scene *scene = lp_setup_get_current_scene(setup);
  81       unsigned size = lp_scene_get_size(scene);
  82
  83       if (size > LP_MAX_SCENE_SIZE) {
  84          /*printf("LLVMPIPE: scene size = %u, flushing.\n", size);*/
  85          set_scene_state( setup, SETUP_FLUSHED );
  86          /*assert(lp_scene_get_size(scene) == 0);*/
  87       }
  88    }
  89 }
  90
  91
  92 static void
  93 first_triangle( struct lp_setup_context *setup,
  94                 const float (*v0)[4],
  95                 const float (*v1)[4],
  96                 const float (*v2)[4])
  97 {
  98    set_scene_state( setup, SETUP_ACTIVE );
  99    lp_setup_choose_triangle( setup );
 100    setup->triangle( setup, v0, v1, v2 );
 101 }
 102
 103 static void
 104 first_line( struct lp_setup_context *setup,
 105             const float (*v0)[4],
 106             const float (*v1)[4])
 107 {
 108    set_scene_state( setup, SETUP_ACTIVE );
 109    lp_setup_choose_line( setup );
 110    setup->line( setup, v0, v1 );
 111 }
 112
 113 static void
 114 first_point( struct lp_setup_context *setup,
 115              const float (*v0)[4])
 116 {
 117    set_scene_state( setup, SETUP_ACTIVE );
 118    lp_setup_choose_point( setup );
 119    setup->point( setup, v0 );
 120 }
 121
 122 static void reset_context( struct lp_setup_context *setup )
 123 {
 124    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 125
 126    /* Reset derived state */
 127    setup->constants.stored_size = 0;
 128    setup->constants.stored_data = NULL;
 129    setup->fs.stored = NULL;
 130    setup->dirty = ~0;
 131
 132    /* no current bin */
 133    setup->scene = NULL;
 134
 135    /* Reset some state:
 136     */
 137    setup->clear.flags = 0;
 138    setup->clear.clearzs.clearzs_mask = 0;
 139
 140    /* Have an explicit "start-binning" call and get rid of this
 141     * pointer twiddling?
 142     */
 143    setup->line = first_line;
 144    setup->point = first_point;
 145    setup->triangle = first_triangle;
 146 }
 147
 148
 149 /** Rasterize all scene's bins */
 150 static void
 151 lp_setup_rasterize_scene( struct lp_setup_context *setup )
 152 {
 153    struct lp_scene *scene = lp_setup_get_current_scene(setup);
 154
 155    lp_scene_rasterize(scene, setup->rast);
 156
 157    reset_context( setup );
 158
 159    LP_DBG(DEBUG_SETUP, "%s done \n", __FUNCTION__);
 160 }
 161
 162
 163
 164 static void
 165 begin_binning( struct lp_setup_context *setup )
 166 {
 167    struct lp_scene *scene = lp_setup_get_current_scene(setup);
 168    boolean need_zsload = FALSE;
 169    if (setup->fb.zsbuf &&
 170        ((setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
 171         util_format_is_depth_and_stencil(setup->fb.zsbuf->format))
 172       need_zsload = TRUE;
 173
 174    LP_DBG(DEBUG_SETUP, "%s color: %s depth: %s\n", __FUNCTION__,
 175           (setup->clear.flags & PIPE_CLEAR_COLOR) ? "clear": "load",
 176           need_zsload ? "clear": "load");
 177
 178    if (setup->fb.nr_cbufs) {
 179       if (setup->clear.flags & PIPE_CLEAR_COLOR) {
 180          lp_scene_bin_everywhere( scene,
 181                                   lp_rast_clear_color,
 182                                   setup->clear.color );
 183          scene->has_color_clear = TRUE;
 184       }
 185    }
 186
 187    if (setup->fb.zsbuf) {
 188       if (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) {
 189          if (!need_zsload)
 190             scene->has_depthstencil_clear = TRUE;
 191          lp_scene_bin_everywhere( scene,
 192                                   lp_rast_clear_zstencil,
 193                                   lp_rast_arg_clearzs(&setup->clear.clearzs) );
 194       }
 195    }
 196
 197    LP_DBG(DEBUG_SETUP, "%s done\n", __FUNCTION__);
 198 }
 199
 200
 201 /* This basically bins and then flushes any outstanding full-screen
 202  * clears.
 203  *
 204  * TODO: fast path for fullscreen clears and no triangles.
 205  */
 206 static void
 207 execute_clears( struct lp_setup_context *setup )
 208 {
 209    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 210
 211    begin_binning( setup );
 212    lp_setup_rasterize_scene( setup );
 213 }
 214
 215
 216 static void
 217 set_scene_state( struct lp_setup_context *setup,
 218                  enum setup_state new_state )
 219 {
 220    unsigned old_state = setup->state;
 221
 222    if (old_state == new_state)
 223       return;
 224
 225    LP_DBG(DEBUG_SETUP, "%s old %d new %d\n", __FUNCTION__, old_state, new_state);
 226
 227    switch (new_state) {
 228    case SETUP_EMPTY:
 229       assert(old_state == SETUP_FLUSHED);
 230       assert(setup->scene == NULL);
 231
 232       /* wait for a free/empty scene
 233        */
 234       setup->scene = lp_scene_dequeue(setup->empty_scenes, TRUE);
 235       assert(lp_scene_is_empty(setup->scene));
 236       lp_scene_begin_binning(setup->scene,
 237                              &setup->fb );
 238       break;
 239
 240    case SETUP_CLEARED:
 241       assert(old_state == SETUP_EMPTY);
 242       assert(setup->scene != NULL);
 243       break;
 244
 245    case SETUP_ACTIVE:
 246       assert(old_state == SETUP_EMPTY ||
 247              old_state == SETUP_CLEARED);
 248       assert(setup->scene != NULL);
 249       begin_binning( setup );
 250       break;
 251
 252    case SETUP_FLUSHED:
 253       if (old_state == SETUP_CLEARED)
 254          execute_clears( setup );
 255       else
 256          lp_setup_rasterize_scene( setup );
 257       assert(setup->scene == NULL);
 258       break;
 259
 260    default:
 261       assert(0 && "invalid setup state mode");
 262    }
 263
 264    setup->state = new_state;
 265 }
 266
 267
 268 /**
 269  * \param flags  bitmask of PIPE_FLUSH_x flags
 270  */
 271 void
 272 lp_setup_flush( struct lp_setup_context *setup,
 273                 unsigned flags )
 274 {
 275    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 276
 277    if (setup->scene) {
 278       struct lp_scene *scene = lp_setup_get_current_scene(setup);
 279       union lp_rast_cmd_arg dummy = {0};
 280
 281       if (flags & (PIPE_FLUSH_SWAPBUFFERS |
 282                    PIPE_FLUSH_FRAME)) {
 283          /* Store colors in the linear color buffer(s).
 284           * If we don't do this here, we'll end up converting the tiled
 285           * data to linear in the texture_unmap() function, which will
 286           * not be a parallel/threaded operation as here.
 287           */
 288          lp_scene_bin_everywhere(scene, lp_rast_store_color, dummy);
 289       }
 290    }
 291
 292    set_scene_state( setup, SETUP_FLUSHED );
 293 }
 294
 295
 296 void
 297 lp_setup_bind_framebuffer( struct lp_setup_context *setup,
 298                            const struct pipe_framebuffer_state *fb )
 299 {
 300    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 301
 302    /* Flush any old scene.
 303     */
 304    set_scene_state( setup, SETUP_FLUSHED );
 305
 306    /*
 307     * Ensure the old scene is not reused.
 308     */
 309    assert(!setup->scene);
 310
 311    /* Set new state.  This will be picked up later when we next need a
 312     * scene.
 313     */
 314    util_copy_framebuffer_state(&setup->fb, fb);
 315 }
 316
 317
 318 void
 319 lp_setup_clear( struct lp_setup_context *setup,
 320                 const float *color,
 321                 double depth,
 322                 unsigned stencil,
 323                 unsigned flags )
 324 {
 325    struct lp_scene *scene = lp_setup_get_current_scene(setup);
 326    unsigned i;
 327    boolean full_zs_clear = TRUE;
 328    uint32_t mask = 0;
 329
 330    LP_DBG(DEBUG_SETUP, "%s state %d\n", __FUNCTION__, setup->state);
 331
 332
 333    if (flags & PIPE_CLEAR_COLOR) {
 334       for (i = 0; i < 4; ++i)
 335          setup->clear.color.clear_color[i] = float_to_ubyte(color[i]);
 336    }
 337
 338    if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 339       if (setup->fb.zsbuf &&
 340           ((flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
 341            util_format_is_depth_and_stencil(setup->fb.zsbuf->format))
 342          full_zs_clear = FALSE;
 343
 344       if (full_zs_clear) {
 345          setup->clear.clearzs.clearzs_value =
 346             util_pack_z_stencil(setup->fb.zsbuf->format,
 347                                 depth,
 348                                 stencil);
 349          setup->clear.clearzs.clearzs_mask = 0xffffffff;
 350       }
 351       else {
 352          /* hmm */
 353          uint32_t tmpval;
 354          if (flags & PIPE_CLEAR_DEPTH) {
 355             tmpval = util_pack_z(setup->fb.zsbuf->format,
 356                                  depth);
 357             switch (setup->fb.zsbuf->format) {
 358             case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 359                mask = 0xffffff;
 360                break;
 361             case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 362                mask = 0xffffff00;
 363                break;
 364             default:
 365                assert(0);
 366             }
 367          }
 368          else {
 369             switch (setup->fb.zsbuf->format) {
 370             case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 371                mask = 0xff000000;
 372                tmpval = stencil << 24;
 373                break;
 374             case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 375                mask = 0xff;
 376                tmpval = stencil;
 377                break;
 378             default:
 379                assert(0);
 380                tmpval = 0;
 381             }
 382          }
 383          setup->clear.clearzs.clearzs_mask |= mask;
 384          setup->clear.clearzs.clearzs_value =
 385             (setup->clear.clearzs.clearzs_value & ~mask) | (tmpval & mask);
 386       }
 387    }
 388
 389    if (setup->state == SETUP_ACTIVE) {
 390       /* Add the clear to existing scene.  In the unusual case where
 391        * both color and depth-stencil are being cleared when there's
 392        * already been some rendering, we could discard the currently
 393        * binned scene and start again, but I don't see that as being
 394        * a common usage.
 395        */
 396       if (flags & PIPE_CLEAR_COLOR) {
 397          lp_scene_bin_everywhere( scene,
 398                                   lp_rast_clear_color,
 399                                   setup->clear.color );
 400          scene->has_color_clear = TRUE;
 401       }
 402
 403       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 404          if (full_zs_clear)
 405             scene->has_depthstencil_clear = TRUE;
 406          else
 407             setup->clear.clearzs.clearzs_mask = mask;
 408          lp_scene_bin_everywhere( scene,
 409                                   lp_rast_clear_zstencil,
 410                                   lp_rast_arg_clearzs(&setup->clear.clearzs) );
 411
 412
 413       }
 414
 415    }
 416    else {
 417       /* Put ourselves into the 'pre-clear' state, specifically to try
 418        * and accumulate multiple clears to color and depth_stencil
 419        * buffers which the app or state-tracker might issue
 420        * separately.
 421        */
 422       set_scene_state( setup, SETUP_CLEARED );
 423
 424       setup->clear.flags |= flags;
 425    }
 426 }
 427
 428
 429 /**
 430  * Emit a fence.
 431  */
 432 struct pipe_fence_handle *
 433 lp_setup_fence( struct lp_setup_context *setup )
 434 {
 435    if (setup->num_threads == 0) {
 436       return NULL;
 437    }
 438    else {
 439       struct lp_scene *scene = lp_setup_get_current_scene(setup);
 440       const unsigned rank = lp_scene_get_num_bins( scene ); /* xxx */
 441       struct lp_fence *fence = lp_fence_create(rank);
 442
 443       LP_DBG(DEBUG_SETUP, "%s rank %u\n", __FUNCTION__, rank);
 444
 445       set_scene_state( setup, SETUP_ACTIVE );
 446
 447       /* insert the fence into all command bins */
 448       lp_scene_bin_everywhere( scene,
 449                                lp_rast_fence,
 450                                lp_rast_arg_fence(fence) );
 451
 452       return (struct pipe_fence_handle *) fence;
 453    }
 454 }
 455
 456
 457 void
 458 lp_setup_set_triangle_state( struct lp_setup_context *setup,
 459                              unsigned cull_mode,
 460                              boolean ccw_is_frontface,
 461                              boolean scissor,
 462                              boolean gl_rasterization_rules)
 463 {
 464    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 465
 466    setup->ccw_is_frontface = ccw_is_frontface;
 467    setup->cullmode = cull_mode;
 468    setup->triangle = first_triangle;
 469    setup->scissor_test = scissor;
 470    setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f;
 471 }
 472
 473
 474
 475 void
 476 lp_setup_set_fs_inputs( struct lp_setup_context *setup,
 477                         const struct lp_shader_input *input,
 478                         unsigned nr )
 479 {
 480    LP_DBG(DEBUG_SETUP, "%s %p %u\n", __FUNCTION__, (void *) input, nr);
 481
 482    memcpy( setup->fs.input, input, nr * sizeof input[0] );
 483    setup->fs.nr_inputs = nr;
 484 }
 485
 486 void
 487 lp_setup_set_fs_variant( struct lp_setup_context *setup,
 488                          struct lp_fragment_shader_variant *variant)
 489 {
 490    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__,
 491           variant);
 492    /* FIXME: reference count */
 493
 494    setup->fs.current.variant = variant;
 495    setup->dirty |= LP_SETUP_NEW_FS;
 496 }
 497
 498 void
 499 lp_setup_set_fs_constants(struct lp_setup_context *setup,
 500                           struct pipe_resource *buffer)
 501 {
 502    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) buffer);
 503
 504    pipe_resource_reference(&setup->constants.current, buffer);
 505
 506    setup->dirty |= LP_SETUP_NEW_CONSTANTS;
 507 }
 508
 509
 510 void
 511 lp_setup_set_alpha_ref_value( struct lp_setup_context *setup,
 512                               float alpha_ref_value )
 513 {
 514    LP_DBG(DEBUG_SETUP, "%s %f\n", __FUNCTION__, alpha_ref_value);
 515
 516    if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
 517       setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
 518       setup->dirty |= LP_SETUP_NEW_FS;
 519    }
 520 }
 521
 522 void
 523 lp_setup_set_stencil_ref_values( struct lp_setup_context *setup,
 524                                  const ubyte refs[2] )
 525 {
 526    LP_DBG(DEBUG_SETUP, "%s %d %d\n", __FUNCTION__, refs[0], refs[1]);
 527
 528    if (setup->fs.current.jit_context.stencil_ref_front != refs[0] ||
 529        setup->fs.current.jit_context.stencil_ref_back != refs[1]) {
 530       setup->fs.current.jit_context.stencil_ref_front = refs[0];
 531       setup->fs.current.jit_context.stencil_ref_back = refs[1];
 532       setup->dirty |= LP_SETUP_NEW_FS;
 533    }
 534 }
 535
 536 void
 537 lp_setup_set_blend_color( struct lp_setup_context *setup,
 538                           const struct pipe_blend_color *blend_color )
 539 {
 540    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 541
 542    assert(blend_color);
 543
 544    if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
 545       memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
 546       setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
 547    }
 548 }
 549
 550
 551 void
 552 lp_setup_set_scissor( struct lp_setup_context *setup,
 553                       const struct pipe_scissor_state *scissor )
 554 {
 555    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 556
 557    assert(scissor);
 558
 559    if (memcmp(&setup->scissor.current, scissor, sizeof(*scissor)) != 0) {
 560       setup->scissor.current = *scissor; /* struct copy */
 561       setup->dirty |= LP_SETUP_NEW_SCISSOR;
 562    }
 563 }
 564
 565
 566 void
 567 lp_setup_set_flatshade_first( struct lp_setup_context *setup,
 568                               boolean flatshade_first )
 569 {
 570    setup->flatshade_first = flatshade_first;
 571 }
 572
 573
 574 void
 575 lp_setup_set_vertex_info( struct lp_setup_context *setup,
 576                           struct vertex_info *vertex_info )
 577 {
 578    /* XXX: just silently holding onto the pointer:
 579     */
 580    setup->vertex_info = vertex_info;
 581 }
 582
 583
 584 /**
 585  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 586  */
 587 void
 588 lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
 589                                     unsigned num,
 590                                     struct pipe_sampler_view **views)
 591 {
 592    unsigned i;
 593
 594    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 595
 596    assert(num <= PIPE_MAX_SAMPLERS);
 597
 598    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 599       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 600
 601       if(view) {
 602          struct pipe_resource *tex = view->texture;
 603          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 604          struct lp_jit_texture *jit_tex;
 605          jit_tex = &setup->fs.current.jit_context.textures[i];
 606          jit_tex->width = tex->width0;
 607          jit_tex->height = tex->height0;
 608          jit_tex->depth = tex->depth0;
 609          jit_tex->last_level = tex->last_level;
 610
 611          /* We're referencing the texture's internal data, so save a
 612           * reference to it.
 613           */
 614          pipe_resource_reference(&setup->fs.current_tex[i], tex);
 615
 616          if (!lp_tex->dt) {
 617             /* regular texture - setup array of mipmap level pointers */
 618             int j;
 619             for (j = 0; j <= tex->last_level; j++) {
 620                jit_tex->data[j] =
 621                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 622                                                  LP_TEX_LAYOUT_LINEAR);
 623                jit_tex->row_stride[j] = lp_tex->row_stride[j];
 624                jit_tex->img_stride[j] = lp_tex->img_stride[j];
 625             }
 626          }
 627          else {
 628             /* display target texture/surface */
 629             /*
 630              * XXX: Where should this be unmapped?
 631              */
 632
 633             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 634             struct sw_winsys *winsys = screen->winsys;
 635             jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 636                                                          PIPE_TRANSFER_READ);
 637             jit_tex->row_stride[0] = lp_tex->row_stride[0];
 638             jit_tex->img_stride[0] = lp_tex->img_stride[0];
 639             assert(jit_tex->data[0]);
 640          }
 641       }
 642    }
 643
 644    setup->dirty |= LP_SETUP_NEW_FS;
 645 }
 646
 647
 648 /**
 649  * Is the given texture referenced by any scene?
 650  * Note: we have to check all scenes including any scenes currently
 651  * being rendered and the current scene being built.
 652  */
 653 unsigned
 654 lp_setup_is_resource_referenced( const struct lp_setup_context *setup,
 655                                 const struct pipe_resource *texture )
 656 {
 657    unsigned i;
 658
 659    /* check the render targets */
 660    for (i = 0; i < setup->fb.nr_cbufs; i++) {
 661       if (setup->fb.cbufs[i]->texture == texture)
 662          return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 663    }
 664    if (setup->fb.zsbuf && setup->fb.zsbuf->texture == texture) {
 665       return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 666    }
 667
 668    /* check textures referenced by the scene */
 669    for (i = 0; i < Elements(setup->scenes); i++) {
 670       if (lp_scene_is_resource_referenced(setup->scenes[i], texture)) {
 671          return PIPE_REFERENCED_FOR_READ;
 672       }
 673    }
 674
 675    return PIPE_UNREFERENCED;
 676 }
 677
 678
 679 /**
 680  * Called by vbuf code when we're about to draw something.
 681  */
 682 void
 683 lp_setup_update_state( struct lp_setup_context *setup )
 684 {
 685    struct lp_scene *scene;
 686
 687    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 688
 689    setup_check_scene_size_and_flush(setup);
 690
 691    scene = lp_setup_get_current_scene(setup);
 692
 693    assert(setup->fs.current.variant);
 694
 695    /* Some of the 'draw' pipeline stages may have changed some driver state.
 696     * Make sure we've processed those state changes before anything else.
 697     *
 698     * XXX this is the only place where llvmpipe_context is used in the
 699     * setup code.  This may get refactored/changed...
 700     */
 701    {
 702       struct llvmpipe_context *lp = llvmpipe_context(scene->pipe);
 703       if (lp->dirty) {
 704          llvmpipe_update_derived(lp);
 705       }
 706       assert(lp->dirty == 0);
 707    }
 708
 709    if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
 710       uint8_t *stored;
 711       unsigned i, j;
 712
 713       stored = lp_scene_alloc_aligned(scene, 4 * 16, 16);
 714
 715       if (stored) {
 716          /* smear each blend color component across 16 ubyte elements */
 717          for (i = 0; i < 4; ++i) {
 718             uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
 719             for (j = 0; j < 16; ++j)
 720                stored[i*16 + j] = c;
 721          }
 722
 723          setup->blend_color.stored = stored;
 724
 725          setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
 726       }
 727
 728       setup->dirty |= LP_SETUP_NEW_FS;
 729    }
 730
 731    if (setup->dirty & LP_SETUP_NEW_SCISSOR) {
 732       float *stored;
 733
 734       stored = lp_scene_alloc_aligned(scene, 4 * sizeof(int32_t), 16);
 735
 736       if (stored) {
 737          stored[0] = (float) setup->scissor.current.minx;
 738          stored[1] = (float) setup->scissor.current.miny;
 739          stored[2] = (float) setup->scissor.current.maxx;
 740          stored[3] = (float) setup->scissor.current.maxy;
 741
 742          setup->scissor.stored = stored;
 743
 744          setup->fs.current.jit_context.scissor_xmin = stored[0];
 745          setup->fs.current.jit_context.scissor_ymin = stored[1];
 746          setup->fs.current.jit_context.scissor_xmax = stored[2];
 747          setup->fs.current.jit_context.scissor_ymax = stored[3];
 748       }
 749
 750       setup->dirty |= LP_SETUP_NEW_FS;
 751    }
 752
 753    if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
 754       struct pipe_resource *buffer = setup->constants.current;
 755
 756       if(buffer) {
 757          unsigned current_size = buffer->width0;
 758          const void *current_data = llvmpipe_resource_data(buffer);
 759
 760          /* TODO: copy only the actually used constants? */
 761
 762          if(setup->constants.stored_size != current_size ||
 763             !setup->constants.stored_data ||
 764             memcmp(setup->constants.stored_data,
 765                    current_data,
 766                    current_size) != 0) {
 767             void *stored;
 768
 769             stored = lp_scene_alloc(scene, current_size);
 770             if(stored) {
 771                memcpy(stored,
 772                       current_data,
 773                       current_size);
 774                setup->constants.stored_size = current_size;
 775                setup->constants.stored_data = stored;
 776             }
 777          }
 778       }
 779       else {
 780          setup->constants.stored_size = 0;
 781          setup->constants.stored_data = NULL;
 782       }
 783
 784       setup->fs.current.jit_context.constants = setup->constants.stored_data;
 785       setup->dirty |= LP_SETUP_NEW_FS;
 786    }
 787
 788
 789    if(setup->dirty & LP_SETUP_NEW_FS) {
 790       if(!setup->fs.stored ||
 791          memcmp(setup->fs.stored,
 792                 &setup->fs.current,
 793                 sizeof setup->fs.current) != 0) {
 794          /* The fs state that's been stored in the scene is different from
 795           * the new, current state.  So allocate a new lp_rast_state object
 796           * and append it to the bin's setup data buffer.
 797           */
 798          uint i;
 799          struct lp_rast_state *stored =
 800             (struct lp_rast_state *) lp_scene_alloc(scene, sizeof *stored);
 801          if(stored) {
 802             memcpy(stored,
 803                    &setup->fs.current,
 804                    sizeof setup->fs.current);
 805             setup->fs.stored = stored;
 806
 807             /* put the state-set command into all bins */
 808             lp_scene_bin_state_command( scene,
 809                                         lp_rast_set_state,
 810                                         lp_rast_arg_state(setup->fs.stored) );
 811          }
 812
 813          /* The scene now references the textures in the rasterization
 814           * state record.  Note that now.
 815           */
 816          for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 817             if (setup->fs.current_tex[i])
 818                lp_scene_add_resource_reference(scene, setup->fs.current_tex[i]);
 819          }
 820       }
 821    }
 822
 823    setup->dirty = 0;
 824
 825    assert(setup->fs.stored);
 826 }
 827
 828
 829
 830 /* Only caller is lp_setup_vbuf_destroy()
 831  */
 832 void
 833 lp_setup_destroy( struct lp_setup_context *setup )
 834 {
 835    uint i;
 836
 837    reset_context( setup );
 838
 839    util_unreference_framebuffer_state(&setup->fb);
 840
 841    for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 842       pipe_resource_reference(&setup->fs.current_tex[i], NULL);
 843    }
 844
 845    pipe_resource_reference(&setup->constants.current, NULL);
 846
 847    /* free the scenes in the 'empty' queue */
 848    while (1) {
 849       struct lp_scene *scene = lp_scene_dequeue(setup->empty_scenes, FALSE);
 850       if (!scene)
 851          break;
 852       lp_scene_destroy(scene);
 853    }
 854
 855    lp_scene_queue_destroy(setup->empty_scenes);
 856
 857    lp_rast_destroy( setup->rast );
 858
 859    FREE( setup );
 860 }
 861
 862
 863 /**
 864  * Create a new primitive tiling engine.  Plug it into the backend of
 865  * the draw module.  Currently also creates a rasterizer to use with
 866  * it.
 867  */
 868 struct lp_setup_context *
 869 lp_setup_create( struct pipe_context *pipe,
 870                  struct draw_context *draw )
 871 {
 872    struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
 873    struct lp_setup_context *setup = CALLOC_STRUCT(lp_setup_context);
 874    unsigned i;
 875
 876    if (!setup)
 877       return NULL;
 878
 879    lp_setup_init_vbuf(setup);
 880
 881    setup->empty_scenes = lp_scene_queue_create();
 882    if (!setup->empty_scenes)
 883       goto fail;
 884
 885    /* XXX: move this to the screen and share between contexts:
 886     */
 887    setup->num_threads = screen->num_threads;
 888    setup->rast = lp_rast_create(screen->num_threads);
 889    if (!setup->rast)
 890       goto fail;
 891
 892    setup->vbuf = draw_vbuf_stage(draw, &setup->base);
 893    if (!setup->vbuf)
 894       goto fail;
 895
 896    draw_set_rasterize_stage(draw, setup->vbuf);
 897    draw_set_render(draw, &setup->base);
 898
 899    /* create some empty scenes */
 900    for (i = 0; i < MAX_SCENES; i++) {
 901       setup->scenes[i] = lp_scene_create( pipe, setup->empty_scenes );
 902
 903       lp_scene_enqueue(setup->empty_scenes, setup->scenes[i]);
 904    }
 905
 906    setup->triangle = first_triangle;
 907    setup->line     = first_line;
 908    setup->point    = first_point;
 909
 910    setup->dirty = ~0;
 911
 912    return setup;
 913
 914 fail:
 915    if (setup->rast)
 916       lp_rast_destroy( setup->rast );
 917
 918    if (setup->vbuf)
 919       ;
 920
 921    if (setup->empty_scenes)
 922       lp_scene_queue_destroy(setup->empty_scenes);
 923
 924    FREE(setup);
 925    return NULL;
 926 }
 927
 928
 929 /**
 930  * Put a BeginQuery command into all bins.
 931  */
 932 void
 933 lp_setup_begin_query(struct lp_setup_context *setup,
 934                      struct llvmpipe_query *pq)
 935 {
 936    struct lp_scene * scene = lp_setup_get_current_scene(setup);
 937    union lp_rast_cmd_arg cmd_arg;
 938
 939    /* init the query to its beginning state */
 940    pq->done = FALSE;
 941    pq->tile_count = 0;
 942    pq->num_tiles = scene->tiles_x * scene->tiles_y;
 943    assert(pq->num_tiles > 0);
 944
 945    memset(pq->count, 0, sizeof(pq->count));  /* reset all counters */
 946
 947    set_scene_state( setup, SETUP_ACTIVE );
 948
 949    cmd_arg.query_obj = pq;
 950    lp_scene_bin_everywhere(scene, lp_rast_begin_query, cmd_arg);
 951    pq->binned = TRUE;
 952 }
 953
 954
 955 /**
 956  * Put an EndQuery command into all bins.
 957  */
 958 void
 959 lp_setup_end_query(struct lp_setup_context *setup, struct llvmpipe_query *pq)
 960 {
 961    struct lp_scene * scene = lp_setup_get_current_scene(setup);
 962    union lp_rast_cmd_arg cmd_arg;
 963
 964    set_scene_state( setup, SETUP_ACTIVE );
 965
 966    cmd_arg.query_obj = pq;
 967    lp_scene_bin_everywhere(scene, lp_rast_end_query, cmd_arg);
 968 }