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