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    }
 292
 293    set_scene_state( setup, SETUP_FLUSHED );
 294 }
 295
 296
 297 void
 298 lp_setup_bind_framebuffer( struct lp_setup_context *setup,
 299                            const struct pipe_framebuffer_state *fb )
 300 {
 301    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 302
 303    /* Flush any old scene.
 304     */
 305    set_scene_state( setup, SETUP_FLUSHED );
 306
 307    /*
 308     * Ensure the old scene is not reused.
 309     */
 310    assert(!setup->scene);
 311
 312    /* Set new state.  This will be picked up later when we next need a
 313     * scene.
 314     */
 315    util_copy_framebuffer_state(&setup->fb, fb);
 316 }
 317
 318
 319 void
 320 lp_setup_clear( struct lp_setup_context *setup,
 321                 const float *color,
 322                 double depth,
 323                 unsigned stencil,
 324                 unsigned flags )
 325 {
 326    struct lp_scene *scene = lp_setup_get_current_scene(setup);
 327    unsigned i;
 328    boolean full_zs_clear = TRUE;
 329    uint32_t mask = 0;
 330
 331    LP_DBG(DEBUG_SETUP, "%s state %d\n", __FUNCTION__, setup->state);
 332
 333
 334    if (flags & PIPE_CLEAR_COLOR) {
 335       for (i = 0; i < 4; ++i)
 336          setup->clear.color.clear_color[i] = float_to_ubyte(color[i]);
 337    }
 338
 339    if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 340       if (setup->fb.zsbuf &&
 341           ((flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
 342            util_format_is_depth_and_stencil(setup->fb.zsbuf->format))
 343          full_zs_clear = FALSE;
 344
 345       if (full_zs_clear) {
 346          setup->clear.clearzs.clearzs_value =
 347             util_pack_z_stencil(setup->fb.zsbuf->format,
 348                                 depth,
 349                                 stencil);
 350          setup->clear.clearzs.clearzs_mask = 0xffffffff;
 351       }
 352       else {
 353          /* hmm */
 354          uint32_t tmpval;
 355          if (flags & PIPE_CLEAR_DEPTH) {
 356             tmpval = util_pack_z(setup->fb.zsbuf->format,
 357                                  depth);
 358             switch (setup->fb.zsbuf->format) {
 359             case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 360                mask = 0xffffff;
 361                break;
 362             case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 363                mask = 0xffffff00;
 364                break;
 365             default:
 366                assert(0);
 367             }
 368          }
 369          else {
 370             switch (setup->fb.zsbuf->format) {
 371             case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 372                mask = 0xff000000;
 373                tmpval = stencil << 24;
 374                break;
 375             case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 376                mask = 0xff;
 377                tmpval = stencil;
 378                break;
 379             default:
 380                assert(0);
 381                tmpval = 0;
 382             }
 383          }
 384          setup->clear.clearzs.clearzs_mask |= mask;
 385          setup->clear.clearzs.clearzs_value =
 386             (setup->clear.clearzs.clearzs_value & ~mask) | (tmpval & mask);
 387       }
 388    }
 389
 390    if (setup->state == SETUP_ACTIVE) {
 391       /* Add the clear to existing scene.  In the unusual case where
 392        * both color and depth-stencil are being cleared when there's
 393        * already been some rendering, we could discard the currently
 394        * binned scene and start again, but I don't see that as being
 395        * a common usage.
 396        */
 397       if (flags & PIPE_CLEAR_COLOR) {
 398          lp_scene_bin_everywhere( scene,
 399                                   lp_rast_clear_color,
 400                                   setup->clear.color );
 401          scene->has_color_clear = TRUE;
 402       }
 403
 404       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 405          if (full_zs_clear)
 406             scene->has_depthstencil_clear = TRUE;
 407          else
 408             setup->clear.clearzs.clearzs_mask = mask;
 409          lp_scene_bin_everywhere( scene,
 410                                   lp_rast_clear_zstencil,
 411                                   lp_rast_arg_clearzs(&setup->clear.clearzs) );
 412
 413
 414       }
 415
 416    }
 417    else {
 418       /* Put ourselves into the 'pre-clear' state, specifically to try
 419        * and accumulate multiple clears to color and depth_stencil
 420        * buffers which the app or state-tracker might issue
 421        * separately.
 422        */
 423       set_scene_state( setup, SETUP_CLEARED );
 424
 425       setup->clear.flags |= flags;
 426    }
 427 }
 428
 429
 430 /**
 431  * Emit a fence.
 432  */
 433 struct pipe_fence_handle *
 434 lp_setup_fence( struct lp_setup_context *setup )
 435 {
 436    if (setup->scene == NULL)
 437       return NULL;
 438    else if (setup->num_threads == 0)
 439       return NULL;
 440    else
 441    {
 442       struct lp_scene *scene = lp_setup_get_current_scene(setup);
 443       const unsigned rank = setup->num_threads;
 444
 445       set_scene_state( setup, SETUP_ACTIVE );
 446
 447       assert(scene->fence == NULL);
 448
 449       /* The caller gets a reference, we keep a copy too, so need to
 450        * bump the refcount:
 451        */
 452       lp_fence_reference(&scene->fence, lp_fence_create(rank));
 453
 454       LP_DBG(DEBUG_SETUP, "%s rank %u\n", __FUNCTION__, rank);
 455
 456       return (struct pipe_fence_handle *) scene->fence;
 457    }
 458 }
 459
 460
 461 void
 462 lp_setup_set_triangle_state( struct lp_setup_context *setup,
 463                              unsigned cull_mode,
 464                              boolean ccw_is_frontface,
 465                              boolean scissor,
 466                              boolean gl_rasterization_rules)
 467 {
 468    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 469
 470    setup->ccw_is_frontface = ccw_is_frontface;
 471    setup->cullmode = cull_mode;
 472    setup->triangle = first_triangle;
 473    setup->scissor_test = scissor;
 474    setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f;
 475 }
 476
 477
 478
 479 void
 480 lp_setup_set_fs_inputs( struct lp_setup_context *setup,
 481                         const struct lp_shader_input *input,
 482                         unsigned nr )
 483 {
 484    LP_DBG(DEBUG_SETUP, "%s %p %u\n", __FUNCTION__, (void *) input, nr);
 485
 486    memcpy( setup->fs.input, input, nr * sizeof input[0] );
 487    setup->fs.nr_inputs = nr;
 488 }
 489
 490 void
 491 lp_setup_set_fs_variant( struct lp_setup_context *setup,
 492                          struct lp_fragment_shader_variant *variant)
 493 {
 494    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__,
 495           variant);
 496    /* FIXME: reference count */
 497
 498    setup->fs.current.variant = variant;
 499    setup->dirty |= LP_SETUP_NEW_FS;
 500 }
 501
 502 void
 503 lp_setup_set_fs_constants(struct lp_setup_context *setup,
 504                           struct pipe_resource *buffer)
 505 {
 506    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) buffer);
 507
 508    pipe_resource_reference(&setup->constants.current, buffer);
 509
 510    setup->dirty |= LP_SETUP_NEW_CONSTANTS;
 511 }
 512
 513
 514 void
 515 lp_setup_set_alpha_ref_value( struct lp_setup_context *setup,
 516                               float alpha_ref_value )
 517 {
 518    LP_DBG(DEBUG_SETUP, "%s %f\n", __FUNCTION__, alpha_ref_value);
 519
 520    if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
 521       setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
 522       setup->dirty |= LP_SETUP_NEW_FS;
 523    }
 524 }
 525
 526 void
 527 lp_setup_set_stencil_ref_values( struct lp_setup_context *setup,
 528                                  const ubyte refs[2] )
 529 {
 530    LP_DBG(DEBUG_SETUP, "%s %d %d\n", __FUNCTION__, refs[0], refs[1]);
 531
 532    if (setup->fs.current.jit_context.stencil_ref_front != refs[0] ||
 533        setup->fs.current.jit_context.stencil_ref_back != refs[1]) {
 534       setup->fs.current.jit_context.stencil_ref_front = refs[0];
 535       setup->fs.current.jit_context.stencil_ref_back = refs[1];
 536       setup->dirty |= LP_SETUP_NEW_FS;
 537    }
 538 }
 539
 540 void
 541 lp_setup_set_blend_color( struct lp_setup_context *setup,
 542                           const struct pipe_blend_color *blend_color )
 543 {
 544    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 545
 546    assert(blend_color);
 547
 548    if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
 549       memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
 550       setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
 551    }
 552 }
 553
 554
 555 void
 556 lp_setup_set_scissor( struct lp_setup_context *setup,
 557                       const struct pipe_scissor_state *scissor )
 558 {
 559    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 560
 561    assert(scissor);
 562
 563    if (memcmp(&setup->scissor.current, scissor, sizeof(*scissor)) != 0) {
 564       setup->scissor.current = *scissor; /* struct copy */
 565       setup->dirty |= LP_SETUP_NEW_SCISSOR;
 566    }
 567 }
 568
 569
 570 void
 571 lp_setup_set_flatshade_first( struct lp_setup_context *setup,
 572                               boolean flatshade_first )
 573 {
 574    setup->flatshade_first = flatshade_first;
 575 }
 576
 577
 578 void
 579 lp_setup_set_vertex_info( struct lp_setup_context *setup,
 580                           struct vertex_info *vertex_info )
 581 {
 582    /* XXX: just silently holding onto the pointer:
 583     */
 584    setup->vertex_info = vertex_info;
 585 }
 586
 587
 588 /**
 589  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 590  */
 591 void
 592 lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
 593                                     unsigned num,
 594                                     struct pipe_sampler_view **views)
 595 {
 596    unsigned i;
 597
 598    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 599
 600    assert(num <= PIPE_MAX_SAMPLERS);
 601
 602    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 603       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 604
 605       if(view) {
 606          struct pipe_resource *tex = view->texture;
 607          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 608          struct lp_jit_texture *jit_tex;
 609          jit_tex = &setup->fs.current.jit_context.textures[i];
 610          jit_tex->width = tex->width0;
 611          jit_tex->height = tex->height0;
 612          jit_tex->depth = tex->depth0;
 613          jit_tex->last_level = tex->last_level;
 614
 615          /* We're referencing the texture's internal data, so save a
 616           * reference to it.
 617           */
 618          pipe_resource_reference(&setup->fs.current_tex[i], tex);
 619
 620          if (!lp_tex->dt) {
 621             /* regular texture - setup array of mipmap level pointers */
 622             int j;
 623             for (j = 0; j <= tex->last_level; j++) {
 624                jit_tex->data[j] =
 625                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 626                                                  LP_TEX_LAYOUT_LINEAR);
 627                jit_tex->row_stride[j] = lp_tex->row_stride[j];
 628                jit_tex->img_stride[j] = lp_tex->img_stride[j];
 629
 630                if (!jit_tex->data[j]) {
 631                   /* out of memory - use dummy tile memory */
 632                   jit_tex->data[j] = lp_dummy_tile;
 633                   jit_tex->width = TILE_SIZE;
 634                   jit_tex->height = TILE_SIZE;
 635                   jit_tex->depth = 1;
 636                   jit_tex->last_level = 0;
 637                   jit_tex->row_stride[j] = 0;
 638                   jit_tex->img_stride[j] = 0;
 639                }
 640             }
 641          }
 642          else {
 643             /* display target texture/surface */
 644             /*
 645              * XXX: Where should this be unmapped?
 646              */
 647             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 648             struct sw_winsys *winsys = screen->winsys;
 649             jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 650                                                          PIPE_TRANSFER_READ);
 651             jit_tex->row_stride[0] = lp_tex->row_stride[0];
 652             jit_tex->img_stride[0] = lp_tex->img_stride[0];
 653             assert(jit_tex->data[0]);
 654          }
 655       }
 656    }
 657
 658    setup->dirty |= LP_SETUP_NEW_FS;
 659 }
 660
 661
 662 /**
 663  * Is the given texture referenced by any scene?
 664  * Note: we have to check all scenes including any scenes currently
 665  * being rendered and the current scene being built.
 666  */
 667 unsigned
 668 lp_setup_is_resource_referenced( const struct lp_setup_context *setup,
 669                                 const struct pipe_resource *texture )
 670 {
 671    unsigned i;
 672
 673    /* check the render targets */
 674    for (i = 0; i < setup->fb.nr_cbufs; i++) {
 675       if (setup->fb.cbufs[i]->texture == texture)
 676          return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 677    }
 678    if (setup->fb.zsbuf && setup->fb.zsbuf->texture == texture) {
 679       return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 680    }
 681
 682    /* check textures referenced by the scene */
 683    for (i = 0; i < Elements(setup->scenes); i++) {
 684       if (lp_scene_is_resource_referenced(setup->scenes[i], texture)) {
 685          return PIPE_REFERENCED_FOR_READ;
 686       }
 687    }
 688
 689    return PIPE_UNREFERENCED;
 690 }
 691
 692
 693 /**
 694  * Called by vbuf code when we're about to draw something.
 695  */
 696 void
 697 lp_setup_update_state( struct lp_setup_context *setup )
 698 {
 699    struct lp_scene *scene;
 700
 701    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 702
 703    setup_check_scene_size_and_flush(setup);
 704
 705    scene = lp_setup_get_current_scene(setup);
 706
 707    assert(setup->fs.current.variant);
 708
 709    /* Some of the 'draw' pipeline stages may have changed some driver state.
 710     * Make sure we've processed those state changes before anything else.
 711     *
 712     * XXX this is the only place where llvmpipe_context is used in the
 713     * setup code.  This may get refactored/changed...
 714     */
 715    {
 716       struct llvmpipe_context *lp = llvmpipe_context(scene->pipe);
 717       if (lp->dirty) {
 718          llvmpipe_update_derived(lp);
 719       }
 720       assert(lp->dirty == 0);
 721    }
 722
 723    if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
 724       uint8_t *stored;
 725       unsigned i, j;
 726
 727       stored = lp_scene_alloc_aligned(scene, 4 * 16, 16);
 728
 729       if (stored) {
 730          /* smear each blend color component across 16 ubyte elements */
 731          for (i = 0; i < 4; ++i) {
 732             uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
 733             for (j = 0; j < 16; ++j)
 734                stored[i*16 + j] = c;
 735          }
 736
 737          setup->blend_color.stored = stored;
 738
 739          setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
 740       }
 741
 742       setup->dirty |= LP_SETUP_NEW_FS;
 743    }
 744
 745    if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
 746       struct pipe_resource *buffer = setup->constants.current;
 747
 748       if(buffer) {
 749          unsigned current_size = buffer->width0;
 750          const void *current_data = llvmpipe_resource_data(buffer);
 751
 752          /* TODO: copy only the actually used constants? */
 753
 754          if(setup->constants.stored_size != current_size ||
 755             !setup->constants.stored_data ||
 756             memcmp(setup->constants.stored_data,
 757                    current_data,
 758                    current_size) != 0) {
 759             void *stored;
 760
 761             stored = lp_scene_alloc(scene, current_size);
 762             if(stored) {
 763                memcpy(stored,
 764                       current_data,
 765                       current_size);
 766                setup->constants.stored_size = current_size;
 767                setup->constants.stored_data = stored;
 768             }
 769          }
 770       }
 771       else {
 772          setup->constants.stored_size = 0;
 773          setup->constants.stored_data = NULL;
 774       }
 775
 776       setup->fs.current.jit_context.constants = setup->constants.stored_data;
 777       setup->dirty |= LP_SETUP_NEW_FS;
 778    }
 779
 780
 781    if(setup->dirty & LP_SETUP_NEW_FS) {
 782       if(!setup->fs.stored ||
 783          memcmp(setup->fs.stored,
 784                 &setup->fs.current,
 785                 sizeof setup->fs.current) != 0) {
 786          /* The fs state that's been stored in the scene is different from
 787           * the new, current state.  So allocate a new lp_rast_state object
 788           * and append it to the bin's setup data buffer.
 789           */
 790          uint i;
 791          struct lp_rast_state *stored =
 792             (struct lp_rast_state *) lp_scene_alloc(scene, sizeof *stored);
 793          if(stored) {
 794             memcpy(stored,
 795                    &setup->fs.current,
 796                    sizeof setup->fs.current);
 797             setup->fs.stored = stored;
 798          }
 799
 800          /* The scene now references the textures in the rasterization
 801           * state record.  Note that now.
 802           */
 803          for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 804             if (setup->fs.current_tex[i])
 805                lp_scene_add_resource_reference(scene, setup->fs.current_tex[i]);
 806          }
 807       }
 808    }
 809
 810    setup->dirty = 0;
 811
 812    assert(setup->fs.stored);
 813 }
 814
 815
 816
 817 /* Only caller is lp_setup_vbuf_destroy()
 818  */
 819 void
 820 lp_setup_destroy( struct lp_setup_context *setup )
 821 {
 822    uint i;
 823
 824    reset_context( setup );
 825
 826    util_unreference_framebuffer_state(&setup->fb);
 827
 828    for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 829       pipe_resource_reference(&setup->fs.current_tex[i], NULL);
 830    }
 831
 832    pipe_resource_reference(&setup->constants.current, NULL);
 833
 834    /* free the scenes in the 'empty' queue */
 835    while (1) {
 836       struct lp_scene *scene = lp_scene_dequeue(setup->empty_scenes, FALSE);
 837       if (!scene)
 838          break;
 839       lp_scene_destroy(scene);
 840    }
 841
 842    lp_scene_queue_destroy(setup->empty_scenes);
 843
 844    FREE( setup );
 845 }
 846
 847
 848 /**
 849  * Create a new primitive tiling engine.  Plug it into the backend of
 850  * the draw module.  Currently also creates a rasterizer to use with
 851  * it.
 852  */
 853 struct lp_setup_context *
 854 lp_setup_create( struct pipe_context *pipe,
 855                  struct draw_context *draw )
 856 {
 857    struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
 858    struct lp_setup_context *setup = CALLOC_STRUCT(lp_setup_context);
 859    unsigned i;
 860
 861    if (!setup)
 862       return NULL;
 863
 864    lp_setup_init_vbuf(setup);
 865
 866    setup->empty_scenes = lp_scene_queue_create();
 867    if (!setup->empty_scenes)
 868       goto fail;
 869
 870    setup->num_threads = screen->num_threads;
 871    setup->vbuf = draw_vbuf_stage(draw, &setup->base);
 872    if (!setup->vbuf)
 873       goto fail;
 874
 875    draw_set_rasterize_stage(draw, setup->vbuf);
 876    draw_set_render(draw, &setup->base);
 877
 878    /* create some empty scenes */
 879    for (i = 0; i < MAX_SCENES; i++) {
 880       setup->scenes[i] = lp_scene_create( pipe, setup->empty_scenes );
 881
 882       lp_scene_enqueue(setup->empty_scenes, setup->scenes[i]);
 883    }
 884
 885    setup->triangle = first_triangle;
 886    setup->line     = first_line;
 887    setup->point    = first_point;
 888
 889    setup->dirty = ~0;
 890
 891    return setup;
 892
 893 fail:
 894    if (setup->vbuf)
 895       ;
 896
 897    if (setup->empty_scenes)
 898       lp_scene_queue_destroy(setup->empty_scenes);
 899
 900    FREE(setup);
 901    return NULL;
 902 }
 903
 904
 905 /**
 906  * Put a BeginQuery command into all bins.
 907  */
 908 void
 909 lp_setup_begin_query(struct lp_setup_context *setup,
 910                      struct llvmpipe_query *pq)
 911 {
 912    struct lp_scene * scene = lp_setup_get_current_scene(setup);
 913    union lp_rast_cmd_arg cmd_arg;
 914
 915    /* init the query to its beginning state */
 916    pq->done = FALSE;
 917    pq->tile_count = 0;
 918    pq->num_tiles = scene->tiles_x * scene->tiles_y;
 919    assert(pq->num_tiles > 0);
 920
 921    memset(pq->count, 0, sizeof(pq->count));  /* reset all counters */
 922
 923    set_scene_state( setup, SETUP_ACTIVE );
 924
 925    cmd_arg.query_obj = pq;
 926    lp_scene_bin_everywhere(scene, lp_rast_begin_query, cmd_arg);
 927    pq->binned = TRUE;
 928 }
 929
 930
 931 /**
 932  * Put an EndQuery command into all bins.
 933  */
 934 void
 935 lp_setup_end_query(struct lp_setup_context *setup, struct llvmpipe_query *pq)
 936 {
 937    struct lp_scene * scene = lp_setup_get_current_scene(setup);
 938    union lp_rast_cmd_arg cmd_arg;
 939
 940    set_scene_state( setup, SETUP_ACTIVE );
 941
 942    cmd_arg.query_obj = pq;
 943    lp_scene_bin_everywhere(scene, lp_rast_end_query, cmd_arg);
 944 }