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                 const char *reason)
 280 {
 281    LP_DBG(DEBUG_SETUP, "%s %s\n", __FUNCTION__, reason);
 282
 283    if (setup->scene) {
 284       if (fence) {
 285          /* if we're going to flush the setup/rasterization modules, emit
 286           * a fence.
 287           */
 288          *fence = lp_setup_fence( setup );
 289       }
 290
 291       if (setup->scene->fence)
 292          setup->scene->fence->issued = TRUE;
 293    }
 294
 295    set_scene_state( setup, SETUP_FLUSHED );
 296 }
 297
 298
 299 void
 300 lp_setup_bind_framebuffer( struct lp_setup_context *setup,
 301                            const struct pipe_framebuffer_state *fb )
 302 {
 303    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 304
 305    /* Flush any old scene.
 306     */
 307    set_scene_state( setup, SETUP_FLUSHED );
 308
 309    /*
 310     * Ensure the old scene is not reused.
 311     */
 312    assert(!setup->scene);
 313
 314    /* Set new state.  This will be picked up later when we next need a
 315     * scene.
 316     */
 317    util_copy_framebuffer_state(&setup->fb, fb);
 318    setup->framebuffer.x0 = 0;
 319    setup->framebuffer.y0 = 0;
 320    setup->framebuffer.x1 = fb->width-1;
 321    setup->framebuffer.y1 = fb->height-1;
 322    setup->dirty |= LP_SETUP_NEW_SCISSOR;
 323 }
 324
 325
 326 void
 327 lp_setup_clear( struct lp_setup_context *setup,
 328                 const float *color,
 329                 double depth,
 330                 unsigned stencil,
 331                 unsigned flags )
 332 {
 333    struct lp_scene *scene = lp_setup_get_current_scene(setup);
 334    unsigned i;
 335    boolean full_zs_clear = TRUE;
 336    uint32_t mask = 0;
 337
 338    LP_DBG(DEBUG_SETUP, "%s state %d\n", __FUNCTION__, setup->state);
 339
 340
 341    if (flags & PIPE_CLEAR_COLOR) {
 342       for (i = 0; i < 4; ++i)
 343          setup->clear.color.clear_color[i] = float_to_ubyte(color[i]);
 344    }
 345
 346    if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 347       if (setup->fb.zsbuf &&
 348           ((flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
 349            util_format_is_depth_and_stencil(setup->fb.zsbuf->format))
 350          full_zs_clear = FALSE;
 351
 352       if (full_zs_clear) {
 353          setup->clear.clearzs.clearzs_value =
 354             util_pack_z_stencil(setup->fb.zsbuf->format,
 355                                 depth,
 356                                 stencil);
 357          setup->clear.clearzs.clearzs_mask = 0xffffffff;
 358       }
 359       else {
 360          /* hmm */
 361          uint32_t tmpval;
 362          if (flags & PIPE_CLEAR_DEPTH) {
 363             tmpval = util_pack_z(setup->fb.zsbuf->format,
 364                                  depth);
 365             switch (setup->fb.zsbuf->format) {
 366             case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 367                mask = 0xffffff;
 368                break;
 369             case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 370                mask = 0xffffff00;
 371                break;
 372             default:
 373                assert(0);
 374             }
 375          }
 376          else {
 377             switch (setup->fb.zsbuf->format) {
 378             case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 379                mask = 0xff000000;
 380                tmpval = stencil << 24;
 381                break;
 382             case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 383                mask = 0xff;
 384                tmpval = stencil;
 385                break;
 386             default:
 387                assert(0);
 388                tmpval = 0;
 389             }
 390          }
 391          setup->clear.clearzs.clearzs_mask |= mask;
 392          setup->clear.clearzs.clearzs_value =
 393             (setup->clear.clearzs.clearzs_value & ~mask) | (tmpval & mask);
 394       }
 395    }
 396
 397    if (setup->state == SETUP_ACTIVE) {
 398       /* Add the clear to existing scene.  In the unusual case where
 399        * both color and depth-stencil are being cleared when there's
 400        * already been some rendering, we could discard the currently
 401        * binned scene and start again, but I don't see that as being
 402        * a common usage.
 403        */
 404       if (flags & PIPE_CLEAR_COLOR) {
 405          lp_scene_bin_everywhere( scene,
 406                                   lp_rast_clear_color,
 407                                   setup->clear.color );
 408          scene->has_color_clear = TRUE;
 409       }
 410
 411       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 412          if (full_zs_clear)
 413             scene->has_depthstencil_clear = TRUE;
 414          else
 415             setup->clear.clearzs.clearzs_mask = mask;
 416          lp_scene_bin_everywhere( scene,
 417                                   lp_rast_clear_zstencil,
 418                                   lp_rast_arg_clearzs(&setup->clear.clearzs) );
 419
 420
 421       }
 422
 423    }
 424    else {
 425       /* Put ourselves into the 'pre-clear' state, specifically to try
 426        * and accumulate multiple clears to color and depth_stencil
 427        * buffers which the app or state-tracker might issue
 428        * separately.
 429        */
 430       set_scene_state( setup, SETUP_CLEARED );
 431
 432       setup->clear.flags |= flags;
 433    }
 434 }
 435
 436
 437 /**
 438  * Emit a fence.
 439  */
 440 struct pipe_fence_handle *
 441 lp_setup_fence( struct lp_setup_context *setup )
 442 {
 443    if (setup->scene == NULL)
 444       return NULL;
 445    else if (setup->num_threads == 0)
 446       return NULL;
 447    else
 448    {
 449       struct lp_scene *scene = lp_setup_get_current_scene(setup);
 450       const unsigned rank = setup->num_threads;
 451
 452       set_scene_state( setup, SETUP_ACTIVE );
 453
 454       assert(scene->fence == NULL);
 455
 456       /* The caller gets a reference, we keep a copy too, so need to
 457        * bump the refcount:
 458        */
 459       lp_fence_reference(&scene->fence, lp_fence_create(rank));
 460
 461       LP_DBG(DEBUG_SETUP, "%s rank %u\n", __FUNCTION__, rank);
 462
 463       return (struct pipe_fence_handle *) scene->fence;
 464    }
 465 }
 466
 467
 468 void
 469 lp_setup_set_triangle_state( struct lp_setup_context *setup,
 470                              unsigned cull_mode,
 471                              boolean ccw_is_frontface,
 472                              boolean scissor,
 473                              boolean gl_rasterization_rules)
 474 {
 475    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 476
 477    setup->ccw_is_frontface = ccw_is_frontface;
 478    setup->cullmode = cull_mode;
 479    setup->triangle = first_triangle;
 480    setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f;
 481
 482    if (setup->scissor_test != scissor) {
 483       setup->dirty |= LP_SETUP_NEW_SCISSOR;
 484       setup->scissor_test = scissor;
 485    }
 486 }
 487
 488
 489
 490 void
 491 lp_setup_set_fs_inputs( struct lp_setup_context *setup,
 492                         const struct lp_shader_input *input,
 493                         unsigned nr )
 494 {
 495    LP_DBG(DEBUG_SETUP, "%s %p %u\n", __FUNCTION__, (void *) input, nr);
 496
 497    memcpy( setup->fs.input, input, nr * sizeof input[0] );
 498    setup->fs.nr_inputs = nr;
 499 }
 500
 501 void
 502 lp_setup_set_fs_variant( struct lp_setup_context *setup,
 503                          struct lp_fragment_shader_variant *variant)
 504 {
 505    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__,
 506           variant);
 507    /* FIXME: reference count */
 508
 509    setup->fs.current.variant = variant;
 510    setup->dirty |= LP_SETUP_NEW_FS;
 511 }
 512
 513 void
 514 lp_setup_set_fs_constants(struct lp_setup_context *setup,
 515                           struct pipe_resource *buffer)
 516 {
 517    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) buffer);
 518
 519    pipe_resource_reference(&setup->constants.current, buffer);
 520
 521    setup->dirty |= LP_SETUP_NEW_CONSTANTS;
 522 }
 523
 524
 525 void
 526 lp_setup_set_alpha_ref_value( struct lp_setup_context *setup,
 527                               float alpha_ref_value )
 528 {
 529    LP_DBG(DEBUG_SETUP, "%s %f\n", __FUNCTION__, alpha_ref_value);
 530
 531    if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
 532       setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
 533       setup->dirty |= LP_SETUP_NEW_FS;
 534    }
 535 }
 536
 537 void
 538 lp_setup_set_stencil_ref_values( struct lp_setup_context *setup,
 539                                  const ubyte refs[2] )
 540 {
 541    LP_DBG(DEBUG_SETUP, "%s %d %d\n", __FUNCTION__, refs[0], refs[1]);
 542
 543    if (setup->fs.current.jit_context.stencil_ref_front != refs[0] ||
 544        setup->fs.current.jit_context.stencil_ref_back != refs[1]) {
 545       setup->fs.current.jit_context.stencil_ref_front = refs[0];
 546       setup->fs.current.jit_context.stencil_ref_back = refs[1];
 547       setup->dirty |= LP_SETUP_NEW_FS;
 548    }
 549 }
 550
 551 void
 552 lp_setup_set_blend_color( struct lp_setup_context *setup,
 553                           const struct pipe_blend_color *blend_color )
 554 {
 555    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 556
 557    assert(blend_color);
 558
 559    if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
 560       memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
 561       setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
 562    }
 563 }
 564
 565
 566 void
 567 lp_setup_set_scissor( struct lp_setup_context *setup,
 568                       const struct pipe_scissor_state *scissor )
 569 {
 570    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 571
 572    assert(scissor);
 573
 574    setup->scissor.x0 = scissor->minx;
 575    setup->scissor.x1 = scissor->maxx-1;
 576    setup->scissor.y0 = scissor->miny;
 577    setup->scissor.y1 = scissor->maxy-1;
 578    setup->dirty |= LP_SETUP_NEW_SCISSOR;
 579 }
 580
 581
 582 void
 583 lp_setup_set_flatshade_first( struct lp_setup_context *setup,
 584                               boolean flatshade_first )
 585 {
 586    setup->flatshade_first = flatshade_first;
 587 }
 588
 589
 590 void
 591 lp_setup_set_vertex_info( struct lp_setup_context *setup,
 592                           struct vertex_info *vertex_info )
 593 {
 594    /* XXX: just silently holding onto the pointer:
 595     */
 596    setup->vertex_info = vertex_info;
 597 }
 598
 599
 600 /**
 601  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 602  */
 603 void
 604 lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
 605                                     unsigned num,
 606                                     struct pipe_sampler_view **views)
 607 {
 608    unsigned i;
 609
 610    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 611
 612    assert(num <= PIPE_MAX_SAMPLERS);
 613
 614    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 615       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 616
 617       if(view) {
 618          struct pipe_resource *tex = view->texture;
 619          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 620          struct lp_jit_texture *jit_tex;
 621          jit_tex = &setup->fs.current.jit_context.textures[i];
 622          jit_tex->width = tex->width0;
 623          jit_tex->height = tex->height0;
 624          jit_tex->depth = tex->depth0;
 625          jit_tex->last_level = tex->last_level;
 626
 627          /* We're referencing the texture's internal data, so save a
 628           * reference to it.
 629           */
 630          pipe_resource_reference(&setup->fs.current_tex[i], tex);
 631
 632          if (!lp_tex->dt) {
 633             /* regular texture - setup array of mipmap level pointers */
 634             int j;
 635             for (j = 0; j <= tex->last_level; j++) {
 636                jit_tex->data[j] =
 637                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 638                                                  LP_TEX_LAYOUT_LINEAR);
 639                jit_tex->row_stride[j] = lp_tex->row_stride[j];
 640                jit_tex->img_stride[j] = lp_tex->img_stride[j];
 641
 642                if (!jit_tex->data[j]) {
 643                   /* out of memory - use dummy tile memory */
 644                   jit_tex->data[j] = lp_dummy_tile;
 645                   jit_tex->width = TILE_SIZE;
 646                   jit_tex->height = TILE_SIZE;
 647                   jit_tex->depth = 1;
 648                   jit_tex->last_level = 0;
 649                   jit_tex->row_stride[j] = 0;
 650                   jit_tex->img_stride[j] = 0;
 651                }
 652             }
 653          }
 654          else {
 655             /* display target texture/surface */
 656             /*
 657              * XXX: Where should this be unmapped?
 658              */
 659             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 660             struct sw_winsys *winsys = screen->winsys;
 661             jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 662                                                          PIPE_TRANSFER_READ);
 663             jit_tex->row_stride[0] = lp_tex->row_stride[0];
 664             jit_tex->img_stride[0] = lp_tex->img_stride[0];
 665             assert(jit_tex->data[0]);
 666          }
 667       }
 668    }
 669
 670    setup->dirty |= LP_SETUP_NEW_FS;
 671 }
 672
 673
 674 /**
 675  * Is the given texture referenced by any scene?
 676  * Note: we have to check all scenes including any scenes currently
 677  * being rendered and the current scene being built.
 678  */
 679 unsigned
 680 lp_setup_is_resource_referenced( const struct lp_setup_context *setup,
 681                                 const struct pipe_resource *texture )
 682 {
 683    unsigned i;
 684
 685    /* check the render targets */
 686    for (i = 0; i < setup->fb.nr_cbufs; i++) {
 687       if (setup->fb.cbufs[i]->texture == texture)
 688          return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 689    }
 690    if (setup->fb.zsbuf && setup->fb.zsbuf->texture == texture) {
 691       return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 692    }
 693
 694    /* check textures referenced by the scene */
 695    for (i = 0; i < Elements(setup->scenes); i++) {
 696       if (lp_scene_is_resource_referenced(setup->scenes[i], texture)) {
 697          return PIPE_REFERENCED_FOR_READ;
 698       }
 699    }
 700
 701    return PIPE_UNREFERENCED;
 702 }
 703
 704
 705 /**
 706  * Called by vbuf code when we're about to draw something.
 707  */
 708 void
 709 lp_setup_update_state( struct lp_setup_context *setup )
 710 {
 711    struct lp_scene *scene;
 712
 713    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 714
 715    setup_check_scene_size_and_flush(setup);
 716
 717    scene = lp_setup_get_current_scene(setup);
 718
 719    assert(setup->fs.current.variant);
 720
 721    /* Some of the 'draw' pipeline stages may have changed some driver state.
 722     * Make sure we've processed those state changes before anything else.
 723     *
 724     * XXX this is the only place where llvmpipe_context is used in the
 725     * setup code.  This may get refactored/changed...
 726     */
 727    {
 728       struct llvmpipe_context *lp = llvmpipe_context(scene->pipe);
 729       if (lp->dirty) {
 730          llvmpipe_update_derived(lp);
 731       }
 732       assert(lp->dirty == 0);
 733    }
 734
 735    if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
 736       uint8_t *stored;
 737       unsigned i, j;
 738
 739       stored = lp_scene_alloc_aligned(scene, 4 * 16, 16);
 740
 741       if (stored) {
 742          /* smear each blend color component across 16 ubyte elements */
 743          for (i = 0; i < 4; ++i) {
 744             uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
 745             for (j = 0; j < 16; ++j)
 746                stored[i*16 + j] = c;
 747          }
 748
 749          setup->blend_color.stored = stored;
 750
 751          setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
 752       }
 753
 754       setup->dirty |= LP_SETUP_NEW_FS;
 755    }
 756
 757    if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
 758       struct pipe_resource *buffer = setup->constants.current;
 759
 760       if(buffer) {
 761          unsigned current_size = buffer->width0;
 762          const void *current_data = llvmpipe_resource_data(buffer);
 763
 764          /* TODO: copy only the actually used constants? */
 765
 766          if(setup->constants.stored_size != current_size ||
 767             !setup->constants.stored_data ||
 768             memcmp(setup->constants.stored_data,
 769                    current_data,
 770                    current_size) != 0) {
 771             void *stored;
 772
 773             stored = lp_scene_alloc(scene, current_size);
 774             if(stored) {
 775                memcpy(stored,
 776                       current_data,
 777                       current_size);
 778                setup->constants.stored_size = current_size;
 779                setup->constants.stored_data = stored;
 780             }
 781          }
 782       }
 783       else {
 784          setup->constants.stored_size = 0;
 785          setup->constants.stored_data = NULL;
 786       }
 787
 788       setup->fs.current.jit_context.constants = setup->constants.stored_data;
 789       setup->dirty |= LP_SETUP_NEW_FS;
 790    }
 791
 792
 793    if(setup->dirty & LP_SETUP_NEW_FS) {
 794       if(!setup->fs.stored ||
 795          memcmp(setup->fs.stored,
 796                 &setup->fs.current,
 797                 sizeof setup->fs.current) != 0) {
 798          /* The fs state that's been stored in the scene is different from
 799           * the new, current state.  So allocate a new lp_rast_state object
 800           * and append it to the bin's setup data buffer.
 801           */
 802          uint i;
 803          struct lp_rast_state *stored =
 804             (struct lp_rast_state *) lp_scene_alloc(scene, sizeof *stored);
 805          if(stored) {
 806             memcpy(stored,
 807                    &setup->fs.current,
 808                    sizeof setup->fs.current);
 809             setup->fs.stored = stored;
 810          }
 811
 812          /* The scene now references the textures in the rasterization
 813           * state record.  Note that now.
 814           */
 815          for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 816             if (setup->fs.current_tex[i])
 817                lp_scene_add_resource_reference(scene, setup->fs.current_tex[i]);
 818    if (setup->dirty & LP_SETUP_NEW_SCISSOR) {
 819       setup->draw_region = setup->framebuffer;
 820       if (setup->scissor_test) {
 821          u_rect_possible_intersection(&setup->scissor,
 822                                       &setup->draw_region);
 823       }
 824    }
 825
 826
 827          }
 828       }
 829    }
 830
 831    setup->dirty = 0;
 832
 833    assert(setup->fs.stored);
 834 }
 835
 836
 837
 838 /* Only caller is lp_setup_vbuf_destroy()
 839  */
 840 void
 841 lp_setup_destroy( struct lp_setup_context *setup )
 842 {
 843    uint i;
 844
 845    reset_context( setup );
 846
 847    util_unreference_framebuffer_state(&setup->fb);
 848
 849    for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 850       pipe_resource_reference(&setup->fs.current_tex[i], NULL);
 851    }
 852
 853    pipe_resource_reference(&setup->constants.current, NULL);
 854
 855    /* free the scenes in the 'empty' queue */
 856    while (1) {
 857       struct lp_scene *scene = lp_scene_dequeue(setup->empty_scenes, FALSE);
 858       if (!scene)
 859          break;
 860       lp_scene_destroy(scene);
 861    }
 862
 863    lp_scene_queue_destroy(setup->empty_scenes);
 864
 865    FREE( setup );
 866 }
 867
 868
 869 /**
 870  * Create a new primitive tiling engine.  Plug it into the backend of
 871  * the draw module.  Currently also creates a rasterizer to use with
 872  * it.
 873  */
 874 struct lp_setup_context *
 875 lp_setup_create( struct pipe_context *pipe,
 876                  struct draw_context *draw )
 877 {
 878    struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
 879    struct lp_setup_context *setup = CALLOC_STRUCT(lp_setup_context);
 880    unsigned i;
 881
 882    if (!setup)
 883       return NULL;
 884
 885    lp_setup_init_vbuf(setup);
 886
 887    setup->empty_scenes = lp_scene_queue_create();
 888    if (!setup->empty_scenes)
 889       goto fail;
 890
 891    setup->num_threads = screen->num_threads;
 892    setup->vbuf = draw_vbuf_stage(draw, &setup->base);
 893    if (!setup->vbuf)
 894       goto fail;
 895
 896    draw_set_rasterize_stage(draw, setup->vbuf);
 897    draw_set_render(draw, &setup->base);
 898
 899    /* create some empty scenes */
 900    for (i = 0; i < MAX_SCENES; i++) {
 901       setup->scenes[i] = lp_scene_create( pipe, setup->empty_scenes );
 902
 903       lp_scene_enqueue(setup->empty_scenes, setup->scenes[i]);
 904    }
 905
 906    setup->triangle = first_triangle;
 907    setup->line     = first_line;
 908    setup->point    = first_point;
 909
 910    setup->dirty = ~0;
 911
 912    return setup;
 913
 914 fail:
 915    if (setup->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 }