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
  67       /* wait for a free/empty scene
  68        */
  69       setup->scene = lp_scene_dequeue(setup->empty_scenes, TRUE);
  70
  71       assert(lp_scene_is_empty(setup->scene));
  72
  73       lp_scene_begin_binning(setup->scene,
  74                              &setup->fb );
  75    }
  76    return setup->scene;
  77 }
  78
  79
  80 /**
  81  * Check if the size of the current scene has exceeded the limit.
  82  * If so, flush/render it.
  83  */
  84 static void
  85 setup_check_scene_size_and_flush(struct lp_setup_context *setup)
  86 {
  87    if (setup->scene) {
  88       struct lp_scene *scene = lp_setup_get_current_scene(setup);
  89       unsigned size = lp_scene_get_size(scene);
  90
  91       if (size > LP_MAX_SCENE_SIZE) {
  92          /*printf("LLVMPIPE: scene size = %u, flushing.\n", size);*/
  93          set_scene_state( setup, SETUP_FLUSHED );
  94          /*assert(lp_scene_get_size(scene) == 0);*/
  95       }
  96    }
  97 }
  98
  99
 100 static void
 101 first_triangle( struct lp_setup_context *setup,
 102                 const float (*v0)[4],
 103                 const float (*v1)[4],
 104                 const float (*v2)[4])
 105 {
 106    set_scene_state( setup, SETUP_ACTIVE );
 107    lp_setup_choose_triangle( setup );
 108    setup->triangle( setup, v0, v1, v2 );
 109 }
 110
 111 static void
 112 first_line( struct lp_setup_context *setup,
 113             const float (*v0)[4],
 114             const float (*v1)[4])
 115 {
 116    set_scene_state( setup, SETUP_ACTIVE );
 117    lp_setup_choose_line( setup );
 118    setup->line( setup, v0, v1 );
 119 }
 120
 121 static void
 122 first_point( struct lp_setup_context *setup,
 123              const float (*v0)[4])
 124 {
 125    set_scene_state( setup, SETUP_ACTIVE );
 126    lp_setup_choose_point( setup );
 127    setup->point( setup, v0 );
 128 }
 129
 130 static void reset_context( struct lp_setup_context *setup )
 131 {
 132    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 133
 134    /* Reset derived state */
 135    setup->constants.stored_size = 0;
 136    setup->constants.stored_data = NULL;
 137    setup->fs.stored = NULL;
 138    setup->dirty = ~0;
 139
 140    /* no current bin */
 141    setup->scene = NULL;
 142
 143    /* Reset some state:
 144     */
 145    setup->clear.flags = 0;
 146    setup->clear.clearzs.clearzs_mask = 0;
 147
 148    /* Have an explicit "start-binning" call and get rid of this
 149     * pointer twiddling?
 150     */
 151    setup->line = first_line;
 152    setup->point = first_point;
 153    setup->triangle = first_triangle;
 154 }
 155
 156
 157 /** Rasterize all scene's bins */
 158 static void
 159 lp_setup_rasterize_scene( struct lp_setup_context *setup )
 160 {
 161    struct lp_scene *scene = lp_setup_get_current_scene(setup);
 162
 163    lp_scene_rasterize(scene, setup->rast);
 164
 165    reset_context( setup );
 166
 167    LP_DBG(DEBUG_SETUP, "%s done \n", __FUNCTION__);
 168 }
 169
 170
 171
 172 static void
 173 begin_binning( struct lp_setup_context *setup )
 174 {
 175    struct lp_scene *scene = lp_setup_get_current_scene(setup);
 176    boolean need_zsload = FALSE;
 177    if (setup->fb.zsbuf &&
 178        ((setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
 179         util_format_is_depth_and_stencil(setup->fb.zsbuf->format))
 180       need_zsload = TRUE;
 181
 182    LP_DBG(DEBUG_SETUP, "%s color: %s depth: %s\n", __FUNCTION__,
 183           (setup->clear.flags & PIPE_CLEAR_COLOR) ? "clear": "load",
 184           need_zsload ? "clear": "load");
 185
 186    if (setup->fb.nr_cbufs) {
 187       if (setup->clear.flags & PIPE_CLEAR_COLOR) {
 188          lp_scene_bin_everywhere( scene,
 189                                   lp_rast_clear_color,
 190                                   setup->clear.color );
 191          scene->has_color_clear = TRUE;
 192       }
 193    }
 194
 195    if (setup->fb.zsbuf) {
 196       if (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) {
 197          if (!need_zsload)
 198             scene->has_depthstencil_clear = TRUE;
 199          lp_scene_bin_everywhere( scene,
 200                                   lp_rast_clear_zstencil,
 201                                   lp_rast_arg_clearzs(&setup->clear.clearzs) );
 202       }
 203    }
 204
 205    LP_DBG(DEBUG_SETUP, "%s done\n", __FUNCTION__);
 206 }
 207
 208
 209 /* This basically bins and then flushes any outstanding full-screen
 210  * clears.
 211  *
 212  * TODO: fast path for fullscreen clears and no triangles.
 213  */
 214 static void
 215 execute_clears( struct lp_setup_context *setup )
 216 {
 217    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 218
 219    begin_binning( setup );
 220    lp_setup_rasterize_scene( setup );
 221 }
 222
 223
 224 static void
 225 set_scene_state( struct lp_setup_context *setup,
 226                  enum setup_state new_state )
 227 {
 228    unsigned old_state = setup->state;
 229
 230    if (old_state == new_state)
 231       return;
 232
 233    LP_DBG(DEBUG_SETUP, "%s old %d new %d\n", __FUNCTION__, old_state, new_state);
 234
 235    switch (new_state) {
 236    case SETUP_ACTIVE:
 237       begin_binning( setup );
 238       break;
 239
 240    case SETUP_CLEARED:
 241       if (old_state == SETUP_ACTIVE) {
 242          assert(0);
 243          return;
 244       }
 245       break;
 246
 247    case SETUP_FLUSHED:
 248       if (old_state == SETUP_CLEARED)
 249          execute_clears( setup );
 250       else
 251          lp_setup_rasterize_scene( setup );
 252       break;
 253
 254    default:
 255       assert(0 && "invalid setup state mode");
 256    }
 257
 258    setup->state = new_state;
 259 }
 260
 261
 262 /**
 263  * \param flags  bitmask of PIPE_FLUSH_x flags
 264  */
 265 void
 266 lp_setup_flush( struct lp_setup_context *setup,
 267                 unsigned flags )
 268 {
 269    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 270
 271    if (setup->scene) {
 272       struct lp_scene *scene = lp_setup_get_current_scene(setup);
 273       union lp_rast_cmd_arg dummy = {0};
 274
 275       if (flags & (PIPE_FLUSH_SWAPBUFFERS |
 276                    PIPE_FLUSH_FRAME)) {
 277          /* Store colors in the linear color buffer(s).
 278           * If we don't do this here, we'll end up converting the tiled
 279           * data to linear in the texture_unmap() function, which will
 280           * not be a parallel/threaded operation as here.
 281           */
 282          lp_scene_bin_everywhere(scene, lp_rast_store_color, dummy);
 283       }
 284    }
 285
 286    set_scene_state( setup, SETUP_FLUSHED );
 287 }
 288
 289
 290 void
 291 lp_setup_bind_framebuffer( struct lp_setup_context *setup,
 292                            const struct pipe_framebuffer_state *fb )
 293 {
 294    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 295
 296    /* Flush any old scene.
 297     */
 298    set_scene_state( setup, SETUP_FLUSHED );
 299
 300    /* Set new state.  This will be picked up later when we next need a
 301     * scene.
 302     */
 303    util_copy_framebuffer_state(&setup->fb, fb);
 304 }
 305
 306
 307 void
 308 lp_setup_clear( struct lp_setup_context *setup,
 309                 const float *color,
 310                 double depth,
 311                 unsigned stencil,
 312                 unsigned flags )
 313 {
 314    struct lp_scene *scene = lp_setup_get_current_scene(setup);
 315    unsigned i;
 316    boolean full_zs_clear = TRUE;
 317    uint32_t mask = 0;
 318
 319    LP_DBG(DEBUG_SETUP, "%s state %d\n", __FUNCTION__, setup->state);
 320
 321
 322    if (flags & PIPE_CLEAR_COLOR) {
 323       for (i = 0; i < 4; ++i)
 324          setup->clear.color.clear_color[i] = float_to_ubyte(color[i]);
 325    }
 326
 327    if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 328       if (setup->fb.zsbuf &&
 329           ((setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
 330            util_format_is_depth_and_stencil(setup->fb.zsbuf->format))
 331          full_zs_clear = FALSE;
 332
 333       if (full_zs_clear) {
 334          setup->clear.clearzs.clearzs_value =
 335             util_pack_z_stencil(setup->fb.zsbuf->format,
 336                                 depth,
 337                                 stencil);
 338          setup->clear.clearzs.clearzs_mask = 0xffffffff;
 339       }
 340       else {
 341          /* hmm */
 342          uint32_t tmpval;
 343          if (flags & PIPE_CLEAR_DEPTH) {
 344             tmpval = util_pack_z(setup->fb.zsbuf->format,
 345                                  depth);
 346             switch (setup->fb.zsbuf->format) {
 347             case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 348                mask = 0xffffff;
 349                break;
 350             case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 351                mask = 0xffffff00;
 352                break;
 353             default:
 354                assert(0);
 355             }
 356          }
 357          else {
 358             switch (setup->fb.zsbuf->format) {
 359             case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 360                mask = 0xff000000;
 361                tmpval = stencil << 24;
 362                break;
 363             case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 364                mask = 0xff;
 365                tmpval = stencil;
 366                break;
 367             default:
 368                assert(0);
 369             }
 370          }
 371          setup->clear.clearzs.clearzs_mask |= mask;
 372          setup->clear.clearzs.clearzs_value =
 373             (setup->clear.clearzs.clearzs_value & ~mask) | (tmpval & mask);
 374       }
 375    }
 376
 377    if (setup->state == SETUP_ACTIVE) {
 378       /* Add the clear to existing scene.  In the unusual case where
 379        * both color and depth-stencil are being cleared when there's
 380        * already been some rendering, we could discard the currently
 381        * binned scene and start again, but I don't see that as being
 382        * a common usage.
 383        */
 384       if (flags & PIPE_CLEAR_COLOR) {
 385          lp_scene_bin_everywhere( scene,
 386                                   lp_rast_clear_color,
 387                                   setup->clear.color );
 388          scene->has_color_clear = TRUE;
 389       }
 390
 391       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 392          if (full_zs_clear)
 393             scene->has_depthstencil_clear = TRUE;
 394          else
 395             setup->clear.clearzs.clearzs_mask = mask;
 396          lp_scene_bin_everywhere( scene,
 397                                   lp_rast_clear_zstencil,
 398                                   lp_rast_arg_clearzs(&setup->clear.clearzs) );
 399
 400
 401       }
 402
 403    }
 404    else {
 405       /* Put ourselves into the 'pre-clear' state, specifically to try
 406        * and accumulate multiple clears to color and depth_stencil
 407        * buffers which the app or state-tracker might issue
 408        * separately.
 409        */
 410       set_scene_state( setup, SETUP_CLEARED );
 411
 412       setup->clear.flags |= flags;
 413    }
 414 }
 415
 416
 417 /**
 418  * Emit a fence.
 419  */
 420 struct pipe_fence_handle *
 421 lp_setup_fence( struct lp_setup_context *setup )
 422 {
 423    if (setup->num_threads == 0) {
 424       return NULL;
 425    }
 426    else {
 427       struct lp_scene *scene = lp_setup_get_current_scene(setup);
 428       const unsigned rank = lp_scene_get_num_bins( scene ); /* xxx */
 429       struct lp_fence *fence = lp_fence_create(rank);
 430
 431       LP_DBG(DEBUG_SETUP, "%s rank %u\n", __FUNCTION__, rank);
 432
 433       set_scene_state( setup, SETUP_ACTIVE );
 434
 435       /* insert the fence into all command bins */
 436       lp_scene_bin_everywhere( scene,
 437                                lp_rast_fence,
 438                                lp_rast_arg_fence(fence) );
 439
 440       return (struct pipe_fence_handle *) fence;
 441    }
 442 }
 443
 444
 445 void
 446 lp_setup_set_triangle_state( struct lp_setup_context *setup,
 447                              unsigned cull_mode,
 448                              boolean ccw_is_frontface,
 449                              boolean scissor,
 450                              boolean gl_rasterization_rules)
 451 {
 452    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 453
 454    setup->ccw_is_frontface = ccw_is_frontface;
 455    setup->cullmode = cull_mode;
 456    setup->triangle = first_triangle;
 457    setup->scissor_test = scissor;
 458    setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f;
 459 }
 460
 461
 462
 463 void
 464 lp_setup_set_fs_inputs( struct lp_setup_context *setup,
 465                         const struct lp_shader_input *input,
 466                         unsigned nr )
 467 {
 468    LP_DBG(DEBUG_SETUP, "%s %p %u\n", __FUNCTION__, (void *) input, nr);
 469
 470    memcpy( setup->fs.input, input, nr * sizeof input[0] );
 471    setup->fs.nr_inputs = nr;
 472 }
 473
 474 void
 475 lp_setup_set_fs_functions( struct lp_setup_context *setup,
 476                            lp_jit_frag_func jit_function0,
 477                            lp_jit_frag_func jit_function1,
 478                            boolean opaque )
 479 {
 480    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__,
 481           cast_lp_jit_frag_func_to_voidptr(jit_function0));
 482    /* FIXME: reference count */
 483
 484    setup->fs.current.jit_function[0] = jit_function0;
 485    setup->fs.current.jit_function[1] = jit_function1;
 486    setup->fs.current.opaque = opaque;
 487    setup->dirty |= LP_SETUP_NEW_FS;
 488 }
 489
 490 void
 491 lp_setup_set_fs_constants(struct lp_setup_context *setup,
 492                           struct pipe_resource *buffer)
 493 {
 494    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) buffer);
 495
 496    pipe_resource_reference(&setup->constants.current, buffer);
 497
 498    setup->dirty |= LP_SETUP_NEW_CONSTANTS;
 499 }
 500
 501
 502 void
 503 lp_setup_set_alpha_ref_value( struct lp_setup_context *setup,
 504                               float alpha_ref_value )
 505 {
 506    LP_DBG(DEBUG_SETUP, "%s %f\n", __FUNCTION__, alpha_ref_value);
 507
 508    if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
 509       setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
 510       setup->dirty |= LP_SETUP_NEW_FS;
 511    }
 512 }
 513
 514 void
 515 lp_setup_set_stencil_ref_values( struct lp_setup_context *setup,
 516                                  const ubyte refs[2] )
 517 {
 518    LP_DBG(DEBUG_SETUP, "%s %d %d\n", __FUNCTION__, refs[0], refs[1]);
 519
 520    if (setup->fs.current.jit_context.stencil_ref_front != refs[0] ||
 521        setup->fs.current.jit_context.stencil_ref_back != refs[1]) {
 522       setup->fs.current.jit_context.stencil_ref_front = refs[0];
 523       setup->fs.current.jit_context.stencil_ref_back = refs[1];
 524       setup->dirty |= LP_SETUP_NEW_FS;
 525    }
 526 }
 527
 528 void
 529 lp_setup_set_blend_color( struct lp_setup_context *setup,
 530                           const struct pipe_blend_color *blend_color )
 531 {
 532    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 533
 534    assert(blend_color);
 535
 536    if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
 537       memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
 538       setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
 539    }
 540 }
 541
 542
 543 void
 544 lp_setup_set_scissor( struct lp_setup_context *setup,
 545                       const struct pipe_scissor_state *scissor )
 546 {
 547    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 548
 549    assert(scissor);
 550
 551    if (memcmp(&setup->scissor.current, scissor, sizeof(*scissor)) != 0) {
 552       setup->scissor.current = *scissor; /* struct copy */
 553       setup->dirty |= LP_SETUP_NEW_SCISSOR;
 554    }
 555 }
 556
 557
 558 void
 559 lp_setup_set_flatshade_first( struct lp_setup_context *setup,
 560                               boolean flatshade_first )
 561 {
 562    setup->flatshade_first = flatshade_first;
 563 }
 564
 565
 566 void
 567 lp_setup_set_vertex_info( struct lp_setup_context *setup,
 568                           struct vertex_info *vertex_info )
 569 {
 570    /* XXX: just silently holding onto the pointer:
 571     */
 572    setup->vertex_info = vertex_info;
 573 }
 574
 575
 576 /**
 577  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 578  */
 579 void
 580 lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
 581                                     unsigned num,
 582                                     struct pipe_sampler_view **views)
 583 {
 584    unsigned i;
 585
 586    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 587
 588    assert(num <= PIPE_MAX_SAMPLERS);
 589
 590    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 591       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 592
 593       if(view) {
 594          struct pipe_resource *tex = view->texture;
 595          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 596          struct lp_jit_texture *jit_tex;
 597          jit_tex = &setup->fs.current.jit_context.textures[i];
 598          jit_tex->width = tex->width0;
 599          jit_tex->height = tex->height0;
 600          jit_tex->depth = tex->depth0;
 601          jit_tex->last_level = tex->last_level;
 602
 603          /* We're referencing the texture's internal data, so save a
 604           * reference to it.
 605           */
 606          pipe_resource_reference(&setup->fs.current_tex[i], tex);
 607
 608          if (!lp_tex->dt) {
 609             /* regular texture - setup array of mipmap level pointers */
 610             int j;
 611             for (j = 0; j <= tex->last_level; j++) {
 612                jit_tex->data[j] =
 613                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 614                                                  LP_TEX_LAYOUT_LINEAR);
 615                jit_tex->row_stride[j] = lp_tex->row_stride[j];
 616                jit_tex->img_stride[j] = lp_tex->img_stride[j];
 617             }
 618          }
 619          else {
 620             /* display target texture/surface */
 621             /*
 622              * XXX: Where should this be unmapped?
 623              */
 624
 625             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 626             struct sw_winsys *winsys = screen->winsys;
 627             jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 628                                                          PIPE_TRANSFER_READ);
 629             jit_tex->row_stride[0] = lp_tex->row_stride[0];
 630             jit_tex->img_stride[0] = lp_tex->img_stride[0];
 631             assert(jit_tex->data[0]);
 632          }
 633       }
 634    }
 635
 636    setup->dirty |= LP_SETUP_NEW_FS;
 637 }
 638
 639
 640 /**
 641  * Is the given texture referenced by any scene?
 642  * Note: we have to check all scenes including any scenes currently
 643  * being rendered and the current scene being built.
 644  */
 645 unsigned
 646 lp_setup_is_resource_referenced( const struct lp_setup_context *setup,
 647                                 const struct pipe_resource *texture )
 648 {
 649    unsigned i;
 650
 651    /* check the render targets */
 652    for (i = 0; i < setup->fb.nr_cbufs; i++) {
 653       if (setup->fb.cbufs[i]->texture == texture)
 654          return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 655    }
 656    if (setup->fb.zsbuf && setup->fb.zsbuf->texture == texture) {
 657       return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 658    }
 659
 660    /* check textures referenced by the scene */
 661    for (i = 0; i < Elements(setup->scenes); i++) {
 662       if (lp_scene_is_resource_referenced(setup->scenes[i], texture)) {
 663          return PIPE_REFERENCED_FOR_READ;
 664       }
 665    }
 666
 667    return PIPE_UNREFERENCED;
 668 }
 669
 670
 671 /**
 672  * Called by vbuf code when we're about to draw something.
 673  */
 674 void
 675 lp_setup_update_state( struct lp_setup_context *setup )
 676 {
 677    struct lp_scene *scene;
 678
 679    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 680
 681    setup_check_scene_size_and_flush(setup);
 682
 683    scene = lp_setup_get_current_scene(setup);
 684
 685    assert(setup->fs.current.jit_function);
 686
 687    /* Some of the 'draw' pipeline stages may have changed some driver state.
 688     * Make sure we've processed those state changes before anything else.
 689     *
 690     * XXX this is the only place where llvmpipe_context is used in the
 691     * setup code.  This may get refactored/changed...
 692     */
 693    {
 694       struct llvmpipe_context *lp = llvmpipe_context(scene->pipe);
 695       if (lp->dirty) {
 696          llvmpipe_update_derived(lp);
 697       }
 698       assert(lp->dirty == 0);
 699    }
 700
 701    if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
 702       uint8_t *stored;
 703       unsigned i, j;
 704
 705       stored = lp_scene_alloc_aligned(scene, 4 * 16, 16);
 706
 707       if (stored) {
 708          /* smear each blend color component across 16 ubyte elements */
 709          for (i = 0; i < 4; ++i) {
 710             uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
 711             for (j = 0; j < 16; ++j)
 712                stored[i*16 + j] = c;
 713          }
 714
 715          setup->blend_color.stored = stored;
 716
 717          setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
 718       }
 719
 720       setup->dirty |= LP_SETUP_NEW_FS;
 721    }
 722
 723    if (setup->dirty & LP_SETUP_NEW_SCISSOR) {
 724       float *stored;
 725
 726       stored = lp_scene_alloc_aligned(scene, 4 * sizeof(int32_t), 16);
 727
 728       if (stored) {
 729          stored[0] = (float) setup->scissor.current.minx;
 730          stored[1] = (float) setup->scissor.current.miny;
 731          stored[2] = (float) setup->scissor.current.maxx;
 732          stored[3] = (float) setup->scissor.current.maxy;
 733
 734          setup->scissor.stored = stored;
 735
 736          setup->fs.current.jit_context.scissor_xmin = stored[0];
 737          setup->fs.current.jit_context.scissor_ymin = stored[1];
 738          setup->fs.current.jit_context.scissor_xmax = stored[2];
 739          setup->fs.current.jit_context.scissor_ymax = stored[3];
 740       }
 741
 742       setup->dirty |= LP_SETUP_NEW_FS;
 743    }
 744
 745    if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
 746       struct pipe_resource *buffer = setup->constants.current;
 747
 748       if(buffer) {
 749          unsigned current_size = buffer->width0;
 750          const void *current_data = llvmpipe_resource_data(buffer);
 751
 752          /* TODO: copy only the actually used constants? */
 753
 754          if(setup->constants.stored_size != current_size ||
 755             !setup->constants.stored_data ||
 756             memcmp(setup->constants.stored_data,
 757                    current_data,
 758                    current_size) != 0) {
 759             void *stored;
 760
 761             stored = lp_scene_alloc(scene, current_size);
 762             if(stored) {
 763                memcpy(stored,
 764                       current_data,
 765                       current_size);
 766                setup->constants.stored_size = current_size;
 767                setup->constants.stored_data = stored;
 768             }
 769          }
 770       }
 771       else {
 772          setup->constants.stored_size = 0;
 773          setup->constants.stored_data = NULL;
 774       }
 775
 776       setup->fs.current.jit_context.constants = setup->constants.stored_data;
 777       setup->dirty |= LP_SETUP_NEW_FS;
 778    }
 779
 780
 781    if(setup->dirty & LP_SETUP_NEW_FS) {
 782       if(!setup->fs.stored ||
 783          memcmp(setup->fs.stored,
 784                 &setup->fs.current,
 785                 sizeof setup->fs.current) != 0) {
 786          /* The fs state that's been stored in the scene is different from
 787           * the new, current state.  So allocate a new lp_rast_state object
 788           * and append it to the bin's setup data buffer.
 789           */
 790          uint i;
 791          struct lp_rast_state *stored =
 792             (struct lp_rast_state *) lp_scene_alloc(scene, sizeof *stored);
 793          if(stored) {
 794             memcpy(stored,
 795                    &setup->fs.current,
 796                    sizeof setup->fs.current);
 797             setup->fs.stored = stored;
 798
 799             /* put the state-set command into all bins */
 800             lp_scene_bin_state_command( scene,
 801                                         lp_rast_set_state,
 802                                         lp_rast_arg_state(setup->fs.stored) );
 803          }
 804
 805          /* The scene now references the textures in the rasterization
 806           * state record.  Note that now.
 807           */
 808          for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 809             if (setup->fs.current_tex[i])
 810                lp_scene_add_resource_reference(scene, setup->fs.current_tex[i]);
 811          }
 812       }
 813    }
 814
 815    setup->dirty = 0;
 816
 817    assert(setup->fs.stored);
 818 }
 819
 820
 821
 822 /* Only caller is lp_setup_vbuf_destroy()
 823  */
 824 void
 825 lp_setup_destroy( struct lp_setup_context *setup )
 826 {
 827    uint i;
 828
 829    reset_context( setup );
 830
 831    util_unreference_framebuffer_state(&setup->fb);
 832
 833    for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 834       pipe_resource_reference(&setup->fs.current_tex[i], NULL);
 835    }
 836
 837    pipe_resource_reference(&setup->constants.current, NULL);
 838
 839    /* free the scenes in the 'empty' queue */
 840    while (1) {
 841       struct lp_scene *scene = lp_scene_dequeue(setup->empty_scenes, FALSE);
 842       if (!scene)
 843          break;
 844       lp_scene_destroy(scene);
 845    }
 846
 847    lp_scene_queue_destroy(setup->empty_scenes);
 848
 849    lp_rast_destroy( setup->rast );
 850
 851    FREE( setup );
 852 }
 853
 854
 855 /**
 856  * Create a new primitive tiling engine.  Plug it into the backend of
 857  * the draw module.  Currently also creates a rasterizer to use with
 858  * it.
 859  */
 860 struct lp_setup_context *
 861 lp_setup_create( struct pipe_context *pipe,
 862                  struct draw_context *draw )
 863 {
 864    struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
 865    struct lp_setup_context *setup = CALLOC_STRUCT(lp_setup_context);
 866    unsigned i;
 867
 868    if (!setup)
 869       return NULL;
 870
 871    lp_setup_init_vbuf(setup);
 872
 873    setup->empty_scenes = lp_scene_queue_create();
 874    if (!setup->empty_scenes)
 875       goto fail;
 876
 877    /* XXX: move this to the screen and share between contexts:
 878     */
 879    setup->num_threads = screen->num_threads;
 880    setup->rast = lp_rast_create(screen->num_threads);
 881    if (!setup->rast)
 882       goto fail;
 883
 884    setup->vbuf = draw_vbuf_stage(draw, &setup->base);
 885    if (!setup->vbuf)
 886       goto fail;
 887
 888    draw_set_rasterize_stage(draw, setup->vbuf);
 889    draw_set_render(draw, &setup->base);
 890
 891    /* create some empty scenes */
 892    for (i = 0; i < MAX_SCENES; i++) {
 893       setup->scenes[i] = lp_scene_create( pipe, setup->empty_scenes );
 894
 895       lp_scene_enqueue(setup->empty_scenes, setup->scenes[i]);
 896    }
 897
 898    setup->triangle = first_triangle;
 899    setup->line     = first_line;
 900    setup->point    = first_point;
 901
 902    setup->dirty = ~0;
 903
 904    return setup;
 905
 906 fail:
 907    if (setup->rast)
 908       lp_rast_destroy( setup->rast );
 909
 910    if (setup->vbuf)
 911       ;
 912
 913    if (setup->empty_scenes)
 914       lp_scene_queue_destroy(setup->empty_scenes);
 915
 916    FREE(setup);
 917    return NULL;
 918 }
 919
 920
 921 /**
 922  * Put a BeginQuery command into all bins.
 923  */
 924 void
 925 lp_setup_begin_query(struct lp_setup_context *setup,
 926                      struct llvmpipe_query *pq)
 927 {
 928    struct lp_scene * scene = lp_setup_get_current_scene(setup);
 929    union lp_rast_cmd_arg cmd_arg;
 930
 931    /* init the query to its beginning state */
 932    pq->done = FALSE;
 933    pq->tile_count = 0;
 934    pq->num_tiles = scene->tiles_x * scene->tiles_y;
 935    assert(pq->num_tiles > 0);
 936
 937    memset(pq->count, 0, sizeof(pq->count));  /* reset all counters */
 938
 939    cmd_arg.query_obj = pq;
 940    lp_scene_bin_everywhere(scene, lp_rast_begin_query, cmd_arg);
 941    pq->binned = TRUE;
 942 }
 943
 944
 945 /**
 946  * Put an EndQuery command into all bins.
 947  */
 948 void
 949 lp_setup_end_query(struct lp_setup_context *setup, struct llvmpipe_query *pq)
 950 {
 951    struct lp_scene * scene = lp_setup_get_current_scene(setup);
 952    union lp_rast_cmd_arg cmd_arg;
 953
 954    cmd_arg.query_obj = pq;
 955    lp_scene_bin_everywhere(scene, lp_rast_end_query, cmd_arg);
 956 }