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