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_texture.h"
  46 #include "lp_debug.h"
  47 #include "lp_fence.h"
  48 #include "lp_query.h"
  49 #include "lp_rast.h"
  50 #include "lp_setup_context.h"
  51 #include "lp_screen.h"
  52 #include "lp_state.h"
  53 #include "state_tracker/sw_winsys.h"
  54
  55 #include "draw/draw_context.h"
  56 #include "draw/draw_vbuf.h"
  57
  58
  59 static boolean set_scene_state( struct lp_setup_context *, enum setup_state,
  60                              const char *reason);
  61 static boolean try_update_scene_state( struct lp_setup_context *setup );
  62
  63
  64 static void
  65 lp_setup_get_empty_scene(struct lp_setup_context *setup)
  66 {
  67    assert(setup->scene == NULL);
  68
  69    setup->scene_idx++;
  70    setup->scene_idx %= Elements(setup->scenes);
  71
  72    setup->scene = setup->scenes[setup->scene_idx];
  73
  74    if (setup->scene->fence) {
  75       if (LP_DEBUG & DEBUG_SETUP)
  76          debug_printf("%s: wait for scene %d\n",
  77                       __FUNCTION__, setup->scene->fence->id);
  78
  79       lp_fence_wait(setup->scene->fence);
  80    }
  81
  82    lp_scene_begin_binning(setup->scene, &setup->fb);
  83
  84 }
  85
  86
  87 static void
  88 first_triangle( struct lp_setup_context *setup,
  89                 const float (*v0)[4],
  90                 const float (*v1)[4],
  91                 const float (*v2)[4])
  92 {
  93    assert(setup->state == SETUP_ACTIVE);
  94    lp_setup_choose_triangle( setup );
  95    setup->triangle( setup, v0, v1, v2 );
  96 }
  97
  98 static void
  99 first_line( struct lp_setup_context *setup,
 100             const float (*v0)[4],
 101             const float (*v1)[4])
 102 {
 103    assert(setup->state == SETUP_ACTIVE);
 104    lp_setup_choose_line( setup );
 105    setup->line( setup, v0, v1 );
 106 }
 107
 108 static void
 109 first_point( struct lp_setup_context *setup,
 110              const float (*v0)[4])
 111 {
 112    assert(setup->state == SETUP_ACTIVE);
 113    lp_setup_choose_point( setup );
 114    setup->point( setup, v0 );
 115 }
 116
 117 void lp_setup_reset( struct lp_setup_context *setup )
 118 {
 119    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 120
 121    /* Reset derived state */
 122    setup->constants.stored_size = 0;
 123    setup->constants.stored_data = NULL;
 124    setup->fs.stored = NULL;
 125    setup->dirty = ~0;
 126
 127    /* no current bin */
 128    setup->scene = NULL;
 129
 130    /* Reset some state:
 131     */
 132    memset(&setup->clear, 0, sizeof setup->clear);
 133
 134    /* Have an explicit "start-binning" call and get rid of this
 135     * pointer twiddling?
 136     */
 137    setup->line = first_line;
 138    setup->point = first_point;
 139    setup->triangle = first_triangle;
 140 }
 141
 142
 143 /** Rasterize all scene's bins */
 144 static void
 145 lp_setup_rasterize_scene( struct lp_setup_context *setup )
 146 {
 147    struct lp_scene *scene = setup->scene;
 148    struct llvmpipe_screen *screen = llvmpipe_screen(scene->pipe->screen);
 149
 150    lp_scene_end_binning(scene);
 151
 152    lp_fence_reference(&setup->last_fence, scene->fence);
 153
 154    if (setup->last_fence)
 155       setup->last_fence->issued = TRUE;
 156
 157    pipe_mutex_lock(screen->rast_mutex);
 158    lp_rast_queue_scene(screen->rast, scene);
 159    lp_rast_finish(screen->rast);
 160    pipe_mutex_unlock(screen->rast_mutex);
 161
 162    lp_scene_end_rasterization(setup->scene);
 163    lp_setup_reset( setup );
 164
 165    LP_DBG(DEBUG_SETUP, "%s done \n", __FUNCTION__);
 166 }
 167
 168
 169
 170 static boolean
 171 begin_binning( struct lp_setup_context *setup )
 172 {
 173    struct lp_scene *scene = setup->scene;
 174    boolean need_zsload = FALSE;
 175    boolean ok;
 176    unsigned i, j;
 177
 178    assert(scene);
 179    assert(scene->fence == NULL);
 180
 181    /* Always create a fence:
 182     */
 183    scene->fence = lp_fence_create(MAX2(1, setup->num_threads));
 184    if (!scene->fence)
 185       return FALSE;
 186
 187    /* Initialize the bin flags and x/y coords:
 188     */
 189    for (i = 0; i < scene->tiles_x; i++) {
 190       for (j = 0; j < scene->tiles_y; j++) {
 191          scene->tile[i][j].x = i;
 192          scene->tile[i][j].y = j;
 193       }
 194    }
 195
 196    ok = try_update_scene_state(setup);
 197    if (!ok)
 198       return FALSE;
 199
 200    if (setup->fb.zsbuf &&
 201        ((setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
 202         util_format_is_depth_and_stencil(setup->fb.zsbuf->format))
 203       need_zsload = TRUE;
 204
 205    LP_DBG(DEBUG_SETUP, "%s color: %s depth: %s\n", __FUNCTION__,
 206           (setup->clear.flags & PIPE_CLEAR_COLOR) ? "clear": "load",
 207           need_zsload ? "clear": "load");
 208
 209    if (setup->fb.nr_cbufs) {
 210       if (setup->clear.flags & PIPE_CLEAR_COLOR) {
 211          ok = lp_scene_bin_everywhere( scene,
 212                                        LP_RAST_OP_CLEAR_COLOR,
 213                                        setup->clear.color );
 214          if (!ok)
 215             return FALSE;
 216       }
 217    }
 218
 219    if (setup->fb.zsbuf) {
 220       if (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) {
 221          if (!need_zsload)
 222             scene->has_depthstencil_clear = TRUE;
 223
 224          ok = lp_scene_bin_everywhere( scene,
 225                                        LP_RAST_OP_CLEAR_ZSTENCIL,
 226                                        lp_rast_arg_clearzs(
 227                                           setup->clear.zsvalue,
 228                                           setup->clear.zsmask));
 229          if (!ok)
 230             return FALSE;
 231       }
 232    }
 233
 234    if (setup->active_query) {
 235       ok = lp_scene_bin_everywhere( scene,
 236                                     LP_RAST_OP_BEGIN_QUERY,
 237                                     lp_rast_arg_query(setup->active_query) );
 238       if (!ok)
 239          return FALSE;
 240    }
 241
 242    setup->clear.flags = 0;
 243    setup->clear.zsmask = 0;
 244    setup->clear.zsvalue = 0;
 245
 246    LP_DBG(DEBUG_SETUP, "%s done\n", __FUNCTION__);
 247    return TRUE;
 248 }
 249
 250
 251 /* This basically bins and then flushes any outstanding full-screen
 252  * clears.
 253  *
 254  * TODO: fast path for fullscreen clears and no triangles.
 255  */
 256 static boolean
 257 execute_clears( struct lp_setup_context *setup )
 258 {
 259    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 260
 261    return begin_binning( setup );
 262 }
 263
 264 const char *states[] = {
 265    "FLUSHED",
 266    "CLEARED",
 267    "ACTIVE "
 268 };
 269
 270
 271 static boolean
 272 set_scene_state( struct lp_setup_context *setup,
 273                  enum setup_state new_state,
 274                  const char *reason)
 275 {
 276    unsigned old_state = setup->state;
 277
 278    if (old_state == new_state)
 279       return TRUE;
 280
 281    if (LP_DEBUG & DEBUG_SCENE) {
 282       debug_printf("%s old %s new %s%s%s\n",
 283                    __FUNCTION__,
 284                    states[old_state],
 285                    states[new_state],
 286                    (new_state == SETUP_FLUSHED) ? ": " : "",
 287                    (new_state == SETUP_FLUSHED) ? reason : "");
 288
 289       if (new_state == SETUP_FLUSHED && setup->scene)
 290          lp_debug_draw_bins_by_cmd_length(setup->scene);
 291    }
 292
 293    /* wait for a free/empty scene
 294     */
 295    if (old_state == SETUP_FLUSHED)
 296       lp_setup_get_empty_scene(setup);
 297
 298    switch (new_state) {
 299    case SETUP_CLEARED:
 300       break;
 301
 302    case SETUP_ACTIVE:
 303       if (!begin_binning( setup ))
 304          goto fail;
 305       break;
 306
 307    case SETUP_FLUSHED:
 308       if (old_state == SETUP_CLEARED)
 309          if (!execute_clears( setup ))
 310             goto fail;
 311
 312       lp_setup_rasterize_scene( setup );
 313       assert(setup->scene == NULL);
 314       break;
 315
 316    default:
 317       assert(0 && "invalid setup state mode");
 318       goto fail;
 319    }
 320
 321    setup->state = new_state;
 322    return TRUE;
 323
 324 fail:
 325    if (setup->scene) {
 326       lp_scene_end_rasterization(setup->scene);
 327       setup->scene = NULL;
 328    }
 329
 330    setup->state = SETUP_FLUSHED;
 331    lp_setup_reset( setup );
 332    return FALSE;
 333 }
 334
 335
 336 void
 337 lp_setup_flush( struct lp_setup_context *setup,
 338                 struct pipe_fence_handle **fence,
 339                 const char *reason)
 340 {
 341    set_scene_state( setup, SETUP_FLUSHED, reason );
 342
 343    if (fence) {
 344       lp_fence_reference((struct lp_fence **)fence, setup->last_fence);
 345    }
 346 }
 347
 348
 349 void
 350 lp_setup_bind_framebuffer( struct lp_setup_context *setup,
 351                            const struct pipe_framebuffer_state *fb )
 352 {
 353    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 354
 355    /* Flush any old scene.
 356     */
 357    set_scene_state( setup, SETUP_FLUSHED, __FUNCTION__ );
 358
 359    /*
 360     * Ensure the old scene is not reused.
 361     */
 362    assert(!setup->scene);
 363
 364    /* Set new state.  This will be picked up later when we next need a
 365     * scene.
 366     */
 367    util_copy_framebuffer_state(&setup->fb, fb);
 368    setup->framebuffer.x0 = 0;
 369    setup->framebuffer.y0 = 0;
 370    setup->framebuffer.x1 = fb->width-1;
 371    setup->framebuffer.y1 = fb->height-1;
 372    setup->dirty |= LP_SETUP_NEW_SCISSOR;
 373 }
 374
 375
 376 static boolean
 377 lp_setup_try_clear( struct lp_setup_context *setup,
 378                     const float *color,
 379                     double depth,
 380                     unsigned stencil,
 381                     unsigned flags )
 382 {
 383    uint32_t zsmask = 0;
 384    uint32_t zsvalue = 0;
 385    union lp_rast_cmd_arg color_arg;
 386    unsigned i;
 387
 388    LP_DBG(DEBUG_SETUP, "%s state %d\n", __FUNCTION__, setup->state);
 389
 390    if (flags & PIPE_CLEAR_COLOR) {
 391       for (i = 0; i < 4; i++)
 392          color_arg.clear_color[i] = float_to_ubyte(color[i]);
 393    }
 394
 395    if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 396       uint32_t zmask = (flags & PIPE_CLEAR_DEPTH) ? ~0 : 0;
 397       uint32_t smask = (flags & PIPE_CLEAR_STENCIL) ? ~0 : 0;
 398
 399       zsvalue = util_pack_z_stencil(setup->fb.zsbuf->format,
 400                                     depth,
 401                                     stencil);
 402
 403
 404       zsmask = util_pack_mask_z_stencil(setup->fb.zsbuf->format,
 405                                         zmask,
 406                                         smask);
 407
 408       zsvalue &= zsmask;
 409    }
 410
 411    if (setup->state == SETUP_ACTIVE) {
 412       struct lp_scene *scene = setup->scene;
 413
 414       /* Add the clear to existing scene.  In the unusual case where
 415        * both color and depth-stencil are being cleared when there's
 416        * already been some rendering, we could discard the currently
 417        * binned scene and start again, but I don't see that as being
 418        * a common usage.
 419        */
 420       if (flags & PIPE_CLEAR_COLOR) {
 421          if (!lp_scene_bin_everywhere( scene,
 422                                        LP_RAST_OP_CLEAR_COLOR,
 423                                        color_arg ))
 424             return FALSE;
 425       }
 426
 427       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 428          if (!lp_scene_bin_everywhere( scene,
 429                                        LP_RAST_OP_CLEAR_ZSTENCIL,
 430                                        lp_rast_arg_clearzs(zsvalue, zsmask) ))
 431             return FALSE;
 432       }
 433    }
 434    else {
 435       /* Put ourselves into the 'pre-clear' state, specifically to try
 436        * and accumulate multiple clears to color and depth_stencil
 437        * buffers which the app or state-tracker might issue
 438        * separately.
 439        */
 440       set_scene_state( setup, SETUP_CLEARED, __FUNCTION__ );
 441
 442       setup->clear.flags |= flags;
 443
 444       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 445          setup->clear.zsmask |= zsmask;
 446          setup->clear.zsvalue =
 447             (setup->clear.zsvalue & ~zsmask) | (zsvalue & zsmask);
 448       }
 449
 450       if (flags & PIPE_CLEAR_COLOR) {
 451          memcpy(setup->clear.color.clear_color,
 452                 &color_arg,
 453                 sizeof setup->clear.color.clear_color);
 454       }
 455    }
 456
 457    return TRUE;
 458 }
 459
 460 void
 461 lp_setup_clear( struct lp_setup_context *setup,
 462                 const float *color,
 463                 double depth,
 464                 unsigned stencil,
 465                 unsigned flags )
 466 {
 467    if (!lp_setup_try_clear( setup, color, depth, stencil, flags )) {
 468       lp_setup_flush(setup, NULL, __FUNCTION__);
 469
 470       if (!lp_setup_try_clear( setup, color, depth, stencil, flags ))
 471          assert(0);
 472    }
 473 }
 474
 475
 476
 477
 478
 479 void
 480 lp_setup_set_triangle_state( struct lp_setup_context *setup,
 481                              unsigned cull_mode,
 482                              boolean ccw_is_frontface,
 483                              boolean scissor,
 484                              boolean gl_rasterization_rules)
 485 {
 486    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 487
 488    setup->ccw_is_frontface = ccw_is_frontface;
 489    setup->cullmode = cull_mode;
 490    setup->triangle = first_triangle;
 491    setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f;
 492
 493    if (setup->scissor_test != scissor) {
 494       setup->dirty |= LP_SETUP_NEW_SCISSOR;
 495       setup->scissor_test = scissor;
 496    }
 497 }
 498
 499 void
 500 lp_setup_set_line_state( struct lp_setup_context *setup,
 501                          float line_width)
 502 {
 503    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 504
 505    setup->line_width = line_width;
 506 }
 507
 508 void
 509 lp_setup_set_point_state( struct lp_setup_context *setup,
 510                           float point_size,
 511                           boolean point_size_per_vertex,
 512                           uint sprite_coord_enable,
 513                           uint sprite_coord_origin)
 514 {
 515    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 516
 517    setup->point_size = point_size;
 518    setup->sprite_coord_enable = sprite_coord_enable;
 519    setup->sprite_coord_origin = sprite_coord_origin;
 520    setup->point_size_per_vertex = point_size_per_vertex;
 521 }
 522
 523 void
 524 lp_setup_set_setup_variant( struct lp_setup_context *setup,
 525                             const struct lp_setup_variant *variant)
 526 {
 527    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 528
 529    setup->setup.variant = variant;
 530 }
 531
 532 void
 533 lp_setup_set_fs_variant( struct lp_setup_context *setup,
 534                          struct lp_fragment_shader_variant *variant)
 535 {
 536    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__,
 537           variant);
 538    /* FIXME: reference count */
 539
 540    setup->fs.current.variant = variant;
 541    setup->dirty |= LP_SETUP_NEW_FS;
 542 }
 543
 544 void
 545 lp_setup_set_fs_constants(struct lp_setup_context *setup,
 546                           struct pipe_resource *buffer)
 547 {
 548    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) buffer);
 549
 550    pipe_resource_reference(&setup->constants.current, buffer);
 551
 552    setup->dirty |= LP_SETUP_NEW_CONSTANTS;
 553 }
 554
 555
 556 void
 557 lp_setup_set_alpha_ref_value( struct lp_setup_context *setup,
 558                               float alpha_ref_value )
 559 {
 560    LP_DBG(DEBUG_SETUP, "%s %f\n", __FUNCTION__, alpha_ref_value);
 561
 562    if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
 563       setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
 564       setup->dirty |= LP_SETUP_NEW_FS;
 565    }
 566 }
 567
 568 void
 569 lp_setup_set_stencil_ref_values( struct lp_setup_context *setup,
 570                                  const ubyte refs[2] )
 571 {
 572    LP_DBG(DEBUG_SETUP, "%s %d %d\n", __FUNCTION__, refs[0], refs[1]);
 573
 574    if (setup->fs.current.jit_context.stencil_ref_front != refs[0] ||
 575        setup->fs.current.jit_context.stencil_ref_back != refs[1]) {
 576       setup->fs.current.jit_context.stencil_ref_front = refs[0];
 577       setup->fs.current.jit_context.stencil_ref_back = refs[1];
 578       setup->dirty |= LP_SETUP_NEW_FS;
 579    }
 580 }
 581
 582 void
 583 lp_setup_set_blend_color( struct lp_setup_context *setup,
 584                           const struct pipe_blend_color *blend_color )
 585 {
 586    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 587
 588    assert(blend_color);
 589
 590    if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
 591       memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
 592       setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
 593    }
 594 }
 595
 596
 597 void
 598 lp_setup_set_scissor( struct lp_setup_context *setup,
 599                       const struct pipe_scissor_state *scissor )
 600 {
 601    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 602
 603    assert(scissor);
 604
 605    setup->scissor.x0 = scissor->minx;
 606    setup->scissor.x1 = scissor->maxx-1;
 607    setup->scissor.y0 = scissor->miny;
 608    setup->scissor.y1 = scissor->maxy-1;
 609    setup->dirty |= LP_SETUP_NEW_SCISSOR;
 610 }
 611
 612
 613 void
 614 lp_setup_set_flatshade_first( struct lp_setup_context *setup,
 615                               boolean flatshade_first )
 616 {
 617    setup->flatshade_first = flatshade_first;
 618 }
 619
 620
 621 void
 622 lp_setup_set_vertex_info( struct lp_setup_context *setup,
 623                           struct vertex_info *vertex_info )
 624 {
 625    /* XXX: just silently holding onto the pointer:
 626     */
 627    setup->vertex_info = vertex_info;
 628 }
 629
 630
 631 /**
 632  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 633  */
 634 void
 635 lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
 636                                     unsigned num,
 637                                     struct pipe_sampler_view **views)
 638 {
 639    unsigned i;
 640
 641    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 642
 643    assert(num <= PIPE_MAX_SAMPLERS);
 644
 645    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 646       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 647
 648       if (view) {
 649          struct pipe_resource *tex = view->texture;
 650          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 651          struct lp_jit_texture *jit_tex;
 652          jit_tex = &setup->fs.current.jit_context.textures[i];
 653          jit_tex->width = tex->width0;
 654          jit_tex->height = tex->height0;
 655          jit_tex->depth = tex->depth0;
 656          jit_tex->last_level = tex->last_level;
 657
 658          /* We're referencing the texture's internal data, so save a
 659           * reference to it.
 660           */
 661          pipe_resource_reference(&setup->fs.current_tex[i], tex);
 662
 663          if (!lp_tex->dt) {
 664             /* regular texture - setup array of mipmap level pointers */
 665             int j;
 666             for (j = 0; j <= tex->last_level; j++) {
 667                jit_tex->data[j] =
 668                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 669                                                  LP_TEX_LAYOUT_LINEAR);
 670                jit_tex->row_stride[j] = lp_tex->row_stride[j];
 671                jit_tex->img_stride[j] = lp_tex->img_stride[j];
 672
 673                if ((LP_PERF & PERF_TEX_MEM) ||
 674                    !jit_tex->data[j]) {
 675                   /* out of memory - use dummy tile memory */
 676                   jit_tex->data[j] = lp_dummy_tile;
 677                   jit_tex->width = TILE_SIZE/8;
 678                   jit_tex->height = TILE_SIZE/8;
 679                   jit_tex->depth = 1;
 680                   jit_tex->last_level = 0;
 681                   jit_tex->row_stride[j] = 0;
 682                   jit_tex->img_stride[j] = 0;
 683                }
 684             }
 685          }
 686          else {
 687             /* display target texture/surface */
 688             /*
 689              * XXX: Where should this be unmapped?
 690              */
 691             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 692             struct sw_winsys *winsys = screen->winsys;
 693             jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 694                                                          PIPE_TRANSFER_READ);
 695             jit_tex->row_stride[0] = lp_tex->row_stride[0];
 696             jit_tex->img_stride[0] = lp_tex->img_stride[0];
 697             assert(jit_tex->data[0]);
 698          }
 699       }
 700    }
 701
 702    setup->dirty |= LP_SETUP_NEW_FS;
 703 }
 704
 705
 706 /**
 707  * Called during state validation when LP_NEW_SAMPLER is set.
 708  */
 709 void
 710 lp_setup_set_fragment_sampler_state(struct lp_setup_context *setup,
 711                                     unsigned num,
 712                                     const struct pipe_sampler_state **samplers)
 713 {
 714    unsigned i;
 715
 716    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 717
 718    assert(num <= PIPE_MAX_SAMPLERS);
 719
 720    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 721       const struct pipe_sampler_state *sampler = i < num ? samplers[i] : NULL;
 722
 723       if (sampler) {
 724          struct lp_jit_texture *jit_tex;
 725          jit_tex = &setup->fs.current.jit_context.textures[i];
 726
 727          jit_tex->min_lod = sampler->min_lod;
 728          jit_tex->max_lod = sampler->max_lod;
 729          jit_tex->lod_bias = sampler->lod_bias;
 730          COPY_4V(jit_tex->border_color, sampler->border_color);
 731       }
 732    }
 733
 734    setup->dirty |= LP_SETUP_NEW_FS;
 735 }
 736
 737
 738 /**
 739  * Is the given texture referenced by any scene?
 740  * Note: we have to check all scenes including any scenes currently
 741  * being rendered and the current scene being built.
 742  */
 743 unsigned
 744 lp_setup_is_resource_referenced( const struct lp_setup_context *setup,
 745                                 const struct pipe_resource *texture )
 746 {
 747    unsigned i;
 748
 749    /* check the render targets */
 750    for (i = 0; i < setup->fb.nr_cbufs; i++) {
 751       if (setup->fb.cbufs[i]->texture == texture)
 752          return LP_REFERENCED_FOR_READ | LP_REFERENCED_FOR_WRITE;
 753    }
 754    if (setup->fb.zsbuf && setup->fb.zsbuf->texture == texture) {
 755       return LP_REFERENCED_FOR_READ | LP_REFERENCED_FOR_WRITE;
 756    }
 757
 758    /* check textures referenced by the scene */
 759    for (i = 0; i < Elements(setup->scenes); i++) {
 760       if (lp_scene_is_resource_referenced(setup->scenes[i], texture)) {
 761          return LP_REFERENCED_FOR_READ;
 762       }
 763    }
 764
 765    return LP_UNREFERENCED;
 766 }
 767
 768
 769 /**
 770  * Called by vbuf code when we're about to draw something.
 771  */
 772 static boolean
 773 try_update_scene_state( struct lp_setup_context *setup )
 774 {
 775    boolean new_scene = (setup->fs.stored == NULL);
 776    struct lp_scene *scene = setup->scene;
 777
 778    assert(scene);
 779
 780    if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
 781       uint8_t *stored;
 782       unsigned i, j;
 783
 784       stored = lp_scene_alloc_aligned(scene, 4 * 16, 16);
 785       if (!stored) {
 786          assert(!new_scene);
 787          return FALSE;
 788       }
 789
 790       /* smear each blend color component across 16 ubyte elements */
 791       for (i = 0; i < 4; ++i) {
 792          uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
 793          for (j = 0; j < 16; ++j)
 794             stored[i*16 + j] = c;
 795       }
 796
 797       setup->blend_color.stored = stored;
 798       setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
 799       setup->dirty |= LP_SETUP_NEW_FS;
 800    }
 801
 802    if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
 803       struct pipe_resource *buffer = setup->constants.current;
 804
 805       if(buffer) {
 806          unsigned current_size = buffer->width0;
 807          const void *current_data = llvmpipe_resource_data(buffer);
 808
 809          /* TODO: copy only the actually used constants? */
 810
 811          if(setup->constants.stored_size != current_size ||
 812             !setup->constants.stored_data ||
 813             memcmp(setup->constants.stored_data,
 814                    current_data,
 815                    current_size) != 0) {
 816             void *stored;
 817
 818             stored = lp_scene_alloc(scene, current_size);
 819             if (!stored) {
 820                assert(!new_scene);
 821                return FALSE;
 822             }
 823
 824             memcpy(stored,
 825                    current_data,
 826                    current_size);
 827             setup->constants.stored_size = current_size;
 828             setup->constants.stored_data = stored;
 829          }
 830       }
 831       else {
 832          setup->constants.stored_size = 0;
 833          setup->constants.stored_data = NULL;
 834       }
 835
 836       setup->fs.current.jit_context.constants = setup->constants.stored_data;
 837       setup->dirty |= LP_SETUP_NEW_FS;
 838    }
 839
 840
 841    if (setup->dirty & LP_SETUP_NEW_FS) {
 842       if (!setup->fs.stored ||
 843           memcmp(setup->fs.stored,
 844                  &setup->fs.current,
 845                  sizeof setup->fs.current) != 0)
 846       {
 847          struct lp_rast_state *stored;
 848          uint i;
 849
 850          /* The fs state that's been stored in the scene is different from
 851           * the new, current state.  So allocate a new lp_rast_state object
 852           * and append it to the bin's setup data buffer.
 853           */
 854          stored = (struct lp_rast_state *) lp_scene_alloc(scene, sizeof *stored);
 855          if (!stored) {
 856             assert(!new_scene);
 857             return FALSE;
 858          }
 859
 860          memcpy(stored,
 861                 &setup->fs.current,
 862                 sizeof setup->fs.current);
 863          setup->fs.stored = stored;
 864
 865          /* The scene now references the textures in the rasterization
 866           * state record.  Note that now.
 867           */
 868          for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 869             if (setup->fs.current_tex[i]) {
 870                if (!lp_scene_add_resource_reference(scene,
 871                                                     setup->fs.current_tex[i],
 872                                                     new_scene)) {
 873                   assert(!new_scene);
 874                   return FALSE;
 875                }
 876             }
 877          }
 878       }
 879    }
 880
 881    if (setup->dirty & LP_SETUP_NEW_SCISSOR) {
 882       setup->draw_region = setup->framebuffer;
 883       if (setup->scissor_test) {
 884          u_rect_possible_intersection(&setup->scissor,
 885                                       &setup->draw_region);
 886       }
 887    }
 888
 889    setup->dirty = 0;
 890
 891    assert(setup->fs.stored);
 892    return TRUE;
 893 }
 894
 895 boolean
 896 lp_setup_update_state( struct lp_setup_context *setup,
 897                        boolean update_scene )
 898 {
 899    /* Some of the 'draw' pipeline stages may have changed some driver state.
 900     * Make sure we've processed those state changes before anything else.
 901     *
 902     * XXX this is the only place where llvmpipe_context is used in the
 903     * setup code.  This may get refactored/changed...
 904     */
 905    {
 906       struct llvmpipe_context *lp = llvmpipe_context(setup->pipe);
 907       if (lp->dirty) {
 908          llvmpipe_update_derived(lp);
 909       }
 910
 911       if (lp->setup->dirty) {
 912          llvmpipe_update_setup(lp);
 913       }
 914
 915       assert(setup->setup.variant);
 916
 917       /* Will probably need to move this somewhere else, just need
 918        * to know about vertex shader point size attribute.
 919        */
 920       setup->psize = lp->psize_slot;
 921
 922       assert(lp->dirty == 0);
 923
 924       assert(lp->setup_variant.key.size ==
 925              setup->setup.variant->key.size);
 926
 927       assert(memcmp(&lp->setup_variant.key,
 928                     &setup->setup.variant->key,
 929                     setup->setup.variant->key.size) == 0);
 930    }
 931
 932    if (update_scene && setup->state != SETUP_ACTIVE) {
 933       if (!set_scene_state( setup, SETUP_ACTIVE, __FUNCTION__ ))
 934          return FALSE;
 935    }
 936
 937    /* Only call into update_scene_state() if we already have a
 938     * scene:
 939     */
 940    if (update_scene && setup->scene) {
 941       assert(setup->state == SETUP_ACTIVE);
 942
 943       if (try_update_scene_state(setup))
 944          return TRUE;
 945
 946       /* Update failed, try to restart the scene.
 947        *
 948        * Cannot call lp_setup_flush_and_restart() directly here
 949        * because of potential recursion.
 950        */
 951       if (!set_scene_state(setup, SETUP_FLUSHED, __FUNCTION__))
 952          return FALSE;
 953
 954       if (!set_scene_state(setup, SETUP_ACTIVE, __FUNCTION__))
 955          return FALSE;
 956
 957       if (!setup->scene)
 958          return FALSE;
 959
 960       return try_update_scene_state(setup);
 961    }
 962
 963    return TRUE;
 964 }
 965
 966
 967
 968 /* Only caller is lp_setup_vbuf_destroy()
 969  */
 970 void
 971 lp_setup_destroy( struct lp_setup_context *setup )
 972 {
 973    uint i;
 974
 975    lp_setup_reset( setup );
 976
 977    util_unreference_framebuffer_state(&setup->fb);
 978
 979    for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 980       pipe_resource_reference(&setup->fs.current_tex[i], NULL);
 981    }
 982
 983    pipe_resource_reference(&setup->constants.current, NULL);
 984
 985    /* free the scenes in the 'empty' queue */
 986    for (i = 0; i < Elements(setup->scenes); i++) {
 987       struct lp_scene *scene = setup->scenes[i];
 988
 989       if (scene->fence)
 990          lp_fence_wait(scene->fence);
 991
 992       lp_scene_destroy(scene);
 993    }
 994
 995    lp_fence_reference(&setup->last_fence, NULL);
 996
 997    FREE( setup );
 998 }
 999
1000
1001 /**
1002  * Create a new primitive tiling engine.  Plug it into the backend of
1003  * the draw module.  Currently also creates a rasterizer to use with
1004  * it.
1005  */
1006 struct lp_setup_context *
1007 lp_setup_create( struct pipe_context *pipe,
1008                  struct draw_context *draw )
1009 {
1010    struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
1011    struct lp_setup_context *setup = CALLOC_STRUCT(lp_setup_context);
1012    unsigned i;
1013
1014    if (!setup)
1015       return NULL;
1016
1017    lp_setup_init_vbuf(setup);
1018
1019    /* Used only in update_state():
1020     */
1021    setup->pipe = pipe;
1022
1023
1024    setup->num_threads = screen->num_threads;
1025    setup->vbuf = draw_vbuf_stage(draw, &setup->base);
1026    if (!setup->vbuf)
1027       goto fail;
1028
1029    draw_set_rasterize_stage(draw, setup->vbuf);
1030    draw_set_render(draw, &setup->base);
1031
1032    /* create some empty scenes */
1033    for (i = 0; i < MAX_SCENES; i++) {
1034       setup->scenes[i] = lp_scene_create( pipe );
1035    }
1036
1037    setup->triangle = first_triangle;
1038    setup->line     = first_line;
1039    setup->point    = first_point;
1040
1041    setup->dirty = ~0;
1042
1043    return setup;
1044
1045 fail:
1046    if (setup->vbuf)
1047       ;
1048
1049    FREE(setup);
1050    return NULL;
1051 }
1052
1053
1054 /**
1055  * Put a BeginQuery command into all bins.
1056  */
1057 void
1058 lp_setup_begin_query(struct lp_setup_context *setup,
1059                      struct llvmpipe_query *pq)
1060 {
1061    /* init the query to its beginning state */
1062    assert(setup->active_query == NULL);
1063
1064    set_scene_state(setup, SETUP_ACTIVE, "begin_query");
1065
1066    if (setup->scene) {
1067       if (!lp_scene_bin_everywhere(setup->scene,
1068                                    LP_RAST_OP_BEGIN_QUERY,
1069                                    lp_rast_arg_query(pq))) {
1070
1071          if (!lp_setup_flush_and_restart(setup))
1072             return;
1073
1074          if (!lp_scene_bin_everywhere(setup->scene,
1075                                       LP_RAST_OP_BEGIN_QUERY,
1076                                       lp_rast_arg_query(pq))) {
1077             return;
1078          }
1079       }
1080    }
1081
1082    setup->active_query = pq;
1083 }
1084
1085
1086 /**
1087  * Put an EndQuery command into all bins.
1088  */
1089 void
1090 lp_setup_end_query(struct lp_setup_context *setup, struct llvmpipe_query *pq)
1091 {
1092    union lp_rast_cmd_arg dummy = { 0 };
1093
1094    set_scene_state(setup, SETUP_ACTIVE, "end_query");
1095
1096    assert(setup->active_query == pq);
1097    setup->active_query = NULL;
1098
1099    /* Setup will automatically re-issue any query which carried over a
1100     * scene boundary, and the rasterizer automatically "ends" queries
1101     * which are active at the end of a scene, so there is no need to
1102     * retry this commands on failure.
1103     */
1104    if (setup->scene) {
1105       /* pq->fence should be the fence of the *last* scene which
1106        * contributed to the query result.
1107        */
1108       lp_fence_reference(&pq->fence, setup->scene->fence);
1109
1110       if (!lp_scene_bin_everywhere(setup->scene,
1111                                    LP_RAST_OP_END_QUERY,
1112                                    dummy)) {
1113          lp_setup_flush(setup, NULL, __FUNCTION__);
1114       }
1115    }
1116    else {
1117       lp_fence_reference(&pq->fence, setup->last_fence);
1118    }
1119 }
1120
1121
1122 boolean
1123 lp_setup_flush_and_restart(struct lp_setup_context *setup)
1124 {
1125    if (0) debug_printf("%s\n", __FUNCTION__);
1126
1127    assert(setup->state == SETUP_ACTIVE);
1128
1129    if (!set_scene_state(setup, SETUP_FLUSHED, __FUNCTION__))
1130       return FALSE;
1131
1132    if (!lp_setup_update_state(setup, TRUE))
1133       return FALSE;
1134
1135    return TRUE;
1136 }
1137
1138