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