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 }
 319
 320
 321 void
 322 lp_setup_clear( struct lp_setup_context *setup,
 323                 const float *color,
 324                 double depth,
 325                 unsigned stencil,
 326                 unsigned flags )
 327 {
 328    struct lp_scene *scene = lp_setup_get_current_scene(setup);
 329    unsigned i;
 330    boolean full_zs_clear = TRUE;
 331    uint32_t mask = 0;
 332
 333    LP_DBG(DEBUG_SETUP, "%s state %d\n", __FUNCTION__, setup->state);
 334
 335
 336    if (flags & PIPE_CLEAR_COLOR) {
 337       for (i = 0; i < 4; ++i)
 338          setup->clear.color.clear_color[i] = float_to_ubyte(color[i]);
 339    }
 340
 341    if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 342       if (setup->fb.zsbuf &&
 343           ((flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
 344            util_format_is_depth_and_stencil(setup->fb.zsbuf->format))
 345          full_zs_clear = FALSE;
 346
 347       if (full_zs_clear) {
 348          setup->clear.clearzs.clearzs_value =
 349             util_pack_z_stencil(setup->fb.zsbuf->format,
 350                                 depth,
 351                                 stencil);
 352          setup->clear.clearzs.clearzs_mask = 0xffffffff;
 353       }
 354       else {
 355          /* hmm */
 356          uint32_t tmpval;
 357          if (flags & PIPE_CLEAR_DEPTH) {
 358             tmpval = util_pack_z(setup->fb.zsbuf->format,
 359                                  depth);
 360             switch (setup->fb.zsbuf->format) {
 361             case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 362                mask = 0xffffff;
 363                break;
 364             case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 365                mask = 0xffffff00;
 366                break;
 367             default:
 368                assert(0);
 369             }
 370          }
 371          else {
 372             switch (setup->fb.zsbuf->format) {
 373             case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 374                mask = 0xff000000;
 375                tmpval = stencil << 24;
 376                break;
 377             case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 378                mask = 0xff;
 379                tmpval = stencil;
 380                break;
 381             default:
 382                assert(0);
 383                tmpval = 0;
 384             }
 385          }
 386          setup->clear.clearzs.clearzs_mask |= mask;
 387          setup->clear.clearzs.clearzs_value =
 388             (setup->clear.clearzs.clearzs_value & ~mask) | (tmpval & mask);
 389       }
 390    }
 391
 392    if (setup->state == SETUP_ACTIVE) {
 393       /* Add the clear to existing scene.  In the unusual case where
 394        * both color and depth-stencil are being cleared when there's
 395        * already been some rendering, we could discard the currently
 396        * binned scene and start again, but I don't see that as being
 397        * a common usage.
 398        */
 399       if (flags & PIPE_CLEAR_COLOR) {
 400          lp_scene_bin_everywhere( scene,
 401                                   lp_rast_clear_color,
 402                                   setup->clear.color );
 403          scene->has_color_clear = TRUE;
 404       }
 405
 406       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 407          if (full_zs_clear)
 408             scene->has_depthstencil_clear = TRUE;
 409          else
 410             setup->clear.clearzs.clearzs_mask = mask;
 411          lp_scene_bin_everywhere( scene,
 412                                   lp_rast_clear_zstencil,
 413                                   lp_rast_arg_clearzs(&setup->clear.clearzs) );
 414
 415
 416       }
 417
 418    }
 419    else {
 420       /* Put ourselves into the 'pre-clear' state, specifically to try
 421        * and accumulate multiple clears to color and depth_stencil
 422        * buffers which the app or state-tracker might issue
 423        * separately.
 424        */
 425       set_scene_state( setup, SETUP_CLEARED );
 426
 427       setup->clear.flags |= flags;
 428    }
 429 }
 430
 431
 432 /**
 433  * Emit a fence.
 434  */
 435 struct pipe_fence_handle *
 436 lp_setup_fence( struct lp_setup_context *setup )
 437 {
 438    if (setup->scene == NULL)
 439       return NULL;
 440    else if (setup->num_threads == 0)
 441       return NULL;
 442    else
 443    {
 444       struct lp_scene *scene = lp_setup_get_current_scene(setup);
 445       const unsigned rank = setup->num_threads;
 446
 447       set_scene_state( setup, SETUP_ACTIVE );
 448
 449       assert(scene->fence == NULL);
 450
 451       /* The caller gets a reference, we keep a copy too, so need to
 452        * bump the refcount:
 453        */
 454       lp_fence_reference(&scene->fence, lp_fence_create(rank));
 455
 456       LP_DBG(DEBUG_SETUP, "%s rank %u\n", __FUNCTION__, rank);
 457
 458       return (struct pipe_fence_handle *) scene->fence;
 459    }
 460 }
 461
 462
 463 void
 464 lp_setup_set_triangle_state( struct lp_setup_context *setup,
 465                              unsigned cull_mode,
 466                              boolean ccw_is_frontface,
 467                              boolean scissor,
 468                              boolean gl_rasterization_rules)
 469 {
 470    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 471
 472    setup->ccw_is_frontface = ccw_is_frontface;
 473    setup->cullmode = cull_mode;
 474    setup->triangle = first_triangle;
 475    setup->scissor_test = scissor;
 476    setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f;
 477 }
 478
 479
 480
 481 void
 482 lp_setup_set_fs_inputs( struct lp_setup_context *setup,
 483                         const struct lp_shader_input *input,
 484                         unsigned nr )
 485 {
 486    LP_DBG(DEBUG_SETUP, "%s %p %u\n", __FUNCTION__, (void *) input, nr);
 487
 488    memcpy( setup->fs.input, input, nr * sizeof input[0] );
 489    setup->fs.nr_inputs = nr;
 490 }
 491
 492 void
 493 lp_setup_set_fs_variant( struct lp_setup_context *setup,
 494                          struct lp_fragment_shader_variant *variant)
 495 {
 496    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__,
 497           variant);
 498    /* FIXME: reference count */
 499
 500    setup->fs.current.variant = variant;
 501    setup->dirty |= LP_SETUP_NEW_FS;
 502 }
 503
 504 void
 505 lp_setup_set_fs_constants(struct lp_setup_context *setup,
 506                           struct pipe_resource *buffer)
 507 {
 508    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) buffer);
 509
 510    pipe_resource_reference(&setup->constants.current, buffer);
 511
 512    setup->dirty |= LP_SETUP_NEW_CONSTANTS;
 513 }
 514
 515
 516 void
 517 lp_setup_set_alpha_ref_value( struct lp_setup_context *setup,
 518                               float alpha_ref_value )
 519 {
 520    LP_DBG(DEBUG_SETUP, "%s %f\n", __FUNCTION__, alpha_ref_value);
 521
 522    if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
 523       setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
 524       setup->dirty |= LP_SETUP_NEW_FS;
 525    }
 526 }
 527
 528 void
 529 lp_setup_set_stencil_ref_values( struct lp_setup_context *setup,
 530                                  const ubyte refs[2] )
 531 {
 532    LP_DBG(DEBUG_SETUP, "%s %d %d\n", __FUNCTION__, refs[0], refs[1]);
 533
 534    if (setup->fs.current.jit_context.stencil_ref_front != refs[0] ||
 535        setup->fs.current.jit_context.stencil_ref_back != refs[1]) {
 536       setup->fs.current.jit_context.stencil_ref_front = refs[0];
 537       setup->fs.current.jit_context.stencil_ref_back = refs[1];
 538       setup->dirty |= LP_SETUP_NEW_FS;
 539    }
 540 }
 541
 542 void
 543 lp_setup_set_blend_color( struct lp_setup_context *setup,
 544                           const struct pipe_blend_color *blend_color )
 545 {
 546    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 547
 548    assert(blend_color);
 549
 550    if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
 551       memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
 552       setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
 553    }
 554 }
 555
 556
 557 void
 558 lp_setup_set_scissor( struct lp_setup_context *setup,
 559                       const struct pipe_scissor_state *scissor )
 560 {
 561    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 562
 563    assert(scissor);
 564
 565    if (memcmp(&setup->scissor.current, scissor, sizeof(*scissor)) != 0) {
 566       setup->scissor.current = *scissor; /* struct copy */
 567       setup->dirty |= LP_SETUP_NEW_SCISSOR;
 568    }
 569 }
 570
 571
 572 void
 573 lp_setup_set_flatshade_first( struct lp_setup_context *setup,
 574                               boolean flatshade_first )
 575 {
 576    setup->flatshade_first = flatshade_first;
 577 }
 578
 579
 580 void
 581 lp_setup_set_vertex_info( struct lp_setup_context *setup,
 582                           struct vertex_info *vertex_info )
 583 {
 584    /* XXX: just silently holding onto the pointer:
 585     */
 586    setup->vertex_info = vertex_info;
 587 }
 588
 589
 590 /**
 591  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 592  */
 593 void
 594 lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
 595                                     unsigned num,
 596                                     struct pipe_sampler_view **views)
 597 {
 598    unsigned i;
 599
 600    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 601
 602    assert(num <= PIPE_MAX_SAMPLERS);
 603
 604    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 605       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 606
 607       if(view) {
 608          struct pipe_resource *tex = view->texture;
 609          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 610          struct lp_jit_texture *jit_tex;
 611          jit_tex = &setup->fs.current.jit_context.textures[i];
 612          jit_tex->width = tex->width0;
 613          jit_tex->height = tex->height0;
 614          jit_tex->depth = tex->depth0;
 615          jit_tex->last_level = tex->last_level;
 616
 617          /* We're referencing the texture's internal data, so save a
 618           * reference to it.
 619           */
 620          pipe_resource_reference(&setup->fs.current_tex[i], tex);
 621
 622          if (!lp_tex->dt) {
 623             /* regular texture - setup array of mipmap level pointers */
 624             int j;
 625             for (j = 0; j <= tex->last_level; j++) {
 626                jit_tex->data[j] =
 627                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 628                                                  LP_TEX_LAYOUT_LINEAR);
 629                jit_tex->row_stride[j] = lp_tex->row_stride[j];
 630                jit_tex->img_stride[j] = lp_tex->img_stride[j];
 631
 632                if (!jit_tex->data[j]) {
 633                   /* out of memory - use dummy tile memory */
 634                   jit_tex->data[j] = lp_dummy_tile;
 635                   jit_tex->width = TILE_SIZE;
 636                   jit_tex->height = TILE_SIZE;
 637                   jit_tex->depth = 1;
 638                   jit_tex->last_level = 0;
 639                   jit_tex->row_stride[j] = 0;
 640                   jit_tex->img_stride[j] = 0;
 641                }
 642             }
 643          }
 644          else {
 645             /* display target texture/surface */
 646             /*
 647              * XXX: Where should this be unmapped?
 648              */
 649             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 650             struct sw_winsys *winsys = screen->winsys;
 651             jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 652                                                          PIPE_TRANSFER_READ);
 653             jit_tex->row_stride[0] = lp_tex->row_stride[0];
 654             jit_tex->img_stride[0] = lp_tex->img_stride[0];
 655             assert(jit_tex->data[0]);
 656          }
 657       }
 658    }
 659
 660    setup->dirty |= LP_SETUP_NEW_FS;
 661 }
 662
 663
 664 /**
 665  * Is the given texture referenced by any scene?
 666  * Note: we have to check all scenes including any scenes currently
 667  * being rendered and the current scene being built.
 668  */
 669 unsigned
 670 lp_setup_is_resource_referenced( const struct lp_setup_context *setup,
 671                                 const struct pipe_resource *texture )
 672 {
 673    unsigned i;
 674
 675    /* check the render targets */
 676    for (i = 0; i < setup->fb.nr_cbufs; i++) {
 677       if (setup->fb.cbufs[i]->texture == texture)
 678          return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 679    }
 680    if (setup->fb.zsbuf && setup->fb.zsbuf->texture == texture) {
 681       return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 682    }
 683
 684    /* check textures referenced by the scene */
 685    for (i = 0; i < Elements(setup->scenes); i++) {
 686       if (lp_scene_is_resource_referenced(setup->scenes[i], texture)) {
 687          return PIPE_REFERENCED_FOR_READ;
 688       }
 689    }
 690
 691    return PIPE_UNREFERENCED;
 692 }
 693
 694
 695 /**
 696  * Called by vbuf code when we're about to draw something.
 697  */
 698 void
 699 lp_setup_update_state( struct lp_setup_context *setup )
 700 {
 701    struct lp_scene *scene;
 702
 703    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 704
 705    setup_check_scene_size_and_flush(setup);
 706
 707    scene = lp_setup_get_current_scene(setup);
 708
 709    assert(setup->fs.current.variant);
 710
 711    /* Some of the 'draw' pipeline stages may have changed some driver state.
 712     * Make sure we've processed those state changes before anything else.
 713     *
 714     * XXX this is the only place where llvmpipe_context is used in the
 715     * setup code.  This may get refactored/changed...
 716     */
 717    {
 718       struct llvmpipe_context *lp = llvmpipe_context(scene->pipe);
 719       if (lp->dirty) {
 720          llvmpipe_update_derived(lp);
 721       }
 722       assert(lp->dirty == 0);
 723    }
 724
 725    if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
 726       uint8_t *stored;
 727       unsigned i, j;
 728
 729       stored = lp_scene_alloc_aligned(scene, 4 * 16, 16);
 730
 731       if (stored) {
 732          /* smear each blend color component across 16 ubyte elements */
 733          for (i = 0; i < 4; ++i) {
 734             uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
 735             for (j = 0; j < 16; ++j)
 736                stored[i*16 + j] = c;
 737          }
 738
 739          setup->blend_color.stored = stored;
 740
 741          setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
 742       }
 743
 744       setup->dirty |= LP_SETUP_NEW_FS;
 745    }
 746
 747    if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
 748       struct pipe_resource *buffer = setup->constants.current;
 749
 750       if(buffer) {
 751          unsigned current_size = buffer->width0;
 752          const void *current_data = llvmpipe_resource_data(buffer);
 753
 754          /* TODO: copy only the actually used constants? */
 755
 756          if(setup->constants.stored_size != current_size ||
 757             !setup->constants.stored_data ||
 758             memcmp(setup->constants.stored_data,
 759                    current_data,
 760                    current_size) != 0) {
 761             void *stored;
 762
 763             stored = lp_scene_alloc(scene, current_size);
 764             if(stored) {
 765                memcpy(stored,
 766                       current_data,
 767                       current_size);
 768                setup->constants.stored_size = current_size;
 769                setup->constants.stored_data = stored;
 770             }
 771          }
 772       }
 773       else {
 774          setup->constants.stored_size = 0;
 775          setup->constants.stored_data = NULL;
 776       }
 777
 778       setup->fs.current.jit_context.constants = setup->constants.stored_data;
 779       setup->dirty |= LP_SETUP_NEW_FS;
 780    }
 781
 782
 783    if(setup->dirty & LP_SETUP_NEW_FS) {
 784       if(!setup->fs.stored ||
 785          memcmp(setup->fs.stored,
 786                 &setup->fs.current,
 787                 sizeof setup->fs.current) != 0) {
 788          /* The fs state that's been stored in the scene is different from
 789           * the new, current state.  So allocate a new lp_rast_state object
 790           * and append it to the bin's setup data buffer.
 791           */
 792          uint i;
 793          struct lp_rast_state *stored =
 794             (struct lp_rast_state *) lp_scene_alloc(scene, sizeof *stored);
 795          if(stored) {
 796             memcpy(stored,
 797                    &setup->fs.current,
 798                    sizeof setup->fs.current);
 799             setup->fs.stored = stored;
 800          }
 801
 802          /* The scene now references the textures in the rasterization
 803           * state record.  Note that now.
 804           */
 805          for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 806             if (setup->fs.current_tex[i])
 807                lp_scene_add_resource_reference(scene, setup->fs.current_tex[i]);
 808          }
 809       }
 810    }
 811
 812    setup->dirty = 0;
 813
 814    assert(setup->fs.stored);
 815 }
 816
 817
 818
 819 /* Only caller is lp_setup_vbuf_destroy()
 820  */
 821 void
 822 lp_setup_destroy( struct lp_setup_context *setup )
 823 {
 824    uint i;
 825
 826    reset_context( setup );
 827
 828    util_unreference_framebuffer_state(&setup->fb);
 829
 830    for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 831       pipe_resource_reference(&setup->fs.current_tex[i], NULL);
 832    }
 833
 834    pipe_resource_reference(&setup->constants.current, NULL);
 835
 836    /* free the scenes in the 'empty' queue */
 837    while (1) {
 838       struct lp_scene *scene = lp_scene_dequeue(setup->empty_scenes, FALSE);
 839       if (!scene)
 840          break;
 841       lp_scene_destroy(scene);
 842    }
 843
 844    lp_scene_queue_destroy(setup->empty_scenes);
 845
 846    FREE( setup );
 847 }
 848
 849
 850 /**
 851  * Create a new primitive tiling engine.  Plug it into the backend of
 852  * the draw module.  Currently also creates a rasterizer to use with
 853  * it.
 854  */
 855 struct lp_setup_context *
 856 lp_setup_create( struct pipe_context *pipe,
 857                  struct draw_context *draw )
 858 {
 859    struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
 860    struct lp_setup_context *setup = CALLOC_STRUCT(lp_setup_context);
 861    unsigned i;
 862
 863    if (!setup)
 864       return NULL;
 865
 866    lp_setup_init_vbuf(setup);
 867
 868    setup->empty_scenes = lp_scene_queue_create();
 869    if (!setup->empty_scenes)
 870       goto fail;
 871
 872    setup->num_threads = screen->num_threads;
 873    setup->vbuf = draw_vbuf_stage(draw, &setup->base);
 874    if (!setup->vbuf)
 875       goto fail;
 876
 877    draw_set_rasterize_stage(draw, setup->vbuf);
 878    draw_set_render(draw, &setup->base);
 879
 880    /* create some empty scenes */
 881    for (i = 0; i < MAX_SCENES; i++) {
 882       setup->scenes[i] = lp_scene_create( pipe, setup->empty_scenes );
 883
 884       lp_scene_enqueue(setup->empty_scenes, setup->scenes[i]);
 885    }
 886
 887    setup->triangle = first_triangle;
 888    setup->line     = first_line;
 889    setup->point    = first_point;
 890
 891    setup->dirty = ~0;
 892
 893    return setup;
 894
 895 fail:
 896    if (setup->vbuf)
 897       ;
 898
 899    if (setup->empty_scenes)
 900       lp_scene_queue_destroy(setup->empty_scenes);
 901
 902    FREE(setup);
 903    return NULL;
 904 }
 905
 906
 907 /**
 908  * Put a BeginQuery command into all bins.
 909  */
 910 void
 911 lp_setup_begin_query(struct lp_setup_context *setup,
 912                      struct llvmpipe_query *pq)
 913 {
 914    struct lp_scene * scene = lp_setup_get_current_scene(setup);
 915    union lp_rast_cmd_arg cmd_arg;
 916
 917    /* init the query to its beginning state */
 918    pq->done = FALSE;
 919    pq->tile_count = 0;
 920    pq->num_tiles = scene->tiles_x * scene->tiles_y;
 921    assert(pq->num_tiles > 0);
 922
 923    memset(pq->count, 0, sizeof(pq->count));  /* reset all counters */
 924
 925    set_scene_state( setup, SETUP_ACTIVE );
 926
 927    cmd_arg.query_obj = pq;
 928    lp_scene_bin_everywhere(scene, lp_rast_begin_query, cmd_arg);
 929    pq->binned = TRUE;
 930 }
 931
 932
 933 /**
 934  * Put an EndQuery command into all bins.
 935  */
 936 void
 937 lp_setup_end_query(struct lp_setup_context *setup, struct llvmpipe_query *pq)
 938 {
 939    struct lp_scene * scene = lp_setup_get_current_scene(setup);
 940    union lp_rast_cmd_arg cmd_arg;
 941
 942    set_scene_state( setup, SETUP_ACTIVE );
 943
 944    cmd_arg.query_obj = pq;
 945    lp_scene_bin_everywhere(scene, lp_rast_end_query, cmd_arg);
 946 }