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 "draw/draw_pipe.h"
  43 #include "lp_context.h"
  44 #include "lp_memory.h"
  45 #include "lp_scene.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 boolean set_scene_state( struct lp_setup_context *, enum setup_state,
  61                              const char *reason);
  62 static boolean try_update_scene_state( struct lp_setup_context *setup );
  63
  64
  65 static void
  66 lp_setup_get_empty_scene(struct lp_setup_context *setup)
  67 {
  68    assert(setup->scene == NULL);
  69
  70    setup->scene_idx++;
  71    setup->scene_idx %= Elements(setup->scenes);
  72
  73    setup->scene = setup->scenes[setup->scene_idx];
  74
  75    if (setup->scene->fence) {
  76       if (LP_DEBUG & DEBUG_SETUP)
  77          debug_printf("%s: wait for scene %d\n",
  78                       __FUNCTION__, setup->scene->fence->id);
  79
  80       lp_fence_wait(setup->scene->fence);
  81    }
  82
  83    lp_scene_begin_binning(setup->scene, &setup->fb);
  84
  85 }
  86
  87
  88 static void
  89 first_triangle( struct lp_setup_context *setup,
  90                 const float (*v0)[4],
  91                 const float (*v1)[4],
  92                 const float (*v2)[4])
  93 {
  94    assert(setup->state == SETUP_ACTIVE);
  95    lp_setup_choose_triangle( setup );
  96    setup->triangle( setup, v0, v1, v2 );
  97 }
  98
  99 static void
 100 first_line( struct lp_setup_context *setup,
 101             const float (*v0)[4],
 102             const float (*v1)[4])
 103 {
 104    assert(setup->state == SETUP_ACTIVE);
 105    lp_setup_choose_line( setup );
 106    setup->line( setup, v0, v1 );
 107 }
 108
 109 static void
 110 first_point( struct lp_setup_context *setup,
 111              const float (*v0)[4])
 112 {
 113    assert(setup->state == SETUP_ACTIVE);
 114    lp_setup_choose_point( setup );
 115    setup->point( setup, v0 );
 116 }
 117
 118 void lp_setup_reset( struct lp_setup_context *setup )
 119 {
 120    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 121
 122    /* Reset derived state */
 123    setup->constants.stored_size = 0;
 124    setup->constants.stored_data = NULL;
 125    setup->fs.stored = NULL;
 126    setup->dirty = ~0;
 127
 128    /* no current bin */
 129    setup->scene = NULL;
 130
 131    /* Reset some state:
 132     */
 133    memset(&setup->clear, 0, sizeof setup->clear);
 134
 135    /* Have an explicit "start-binning" call and get rid of this
 136     * pointer twiddling?
 137     */
 138    setup->line = first_line;
 139    setup->point = first_point;
 140    setup->triangle = first_triangle;
 141 }
 142
 143
 144 /** Rasterize all scene's bins */
 145 static void
 146 lp_setup_rasterize_scene( struct lp_setup_context *setup )
 147 {
 148    struct lp_scene *scene = setup->scene;
 149    struct llvmpipe_screen *screen = llvmpipe_screen(scene->pipe->screen);
 150
 151    lp_scene_end_binning(scene);
 152
 153    lp_fence_reference(&setup->last_fence, scene->fence);
 154
 155    if (setup->last_fence)
 156       setup->last_fence->issued = TRUE;
 157
 158    pipe_mutex_lock(screen->rast_mutex);
 159    lp_rast_queue_scene(screen->rast, scene);
 160    lp_rast_finish(screen->rast);
 161    pipe_mutex_unlock(screen->rast_mutex);
 162
 163    lp_scene_end_rasterization(setup->scene);
 164    lp_setup_reset( setup );
 165
 166    LP_DBG(DEBUG_SETUP, "%s done \n", __FUNCTION__);
 167 }
 168
 169
 170
 171 static boolean
 172 begin_binning( struct lp_setup_context *setup )
 173 {
 174    struct lp_scene *scene = setup->scene;
 175    boolean need_zsload = FALSE;
 176    boolean ok;
 177    unsigned i, j;
 178
 179    assert(scene);
 180    assert(scene->fence == NULL);
 181
 182    /* Always create a fence:
 183     */
 184    scene->fence = lp_fence_create(MAX2(1, setup->num_threads));
 185    if (!scene->fence)
 186       return FALSE;
 187
 188    /* Initialize the bin flags and x/y coords:
 189     */
 190    for (i = 0; i < scene->tiles_x; i++) {
 191       for (j = 0; j < scene->tiles_y; j++) {
 192          scene->tile[i][j].x = i;
 193          scene->tile[i][j].y = j;
 194       }
 195    }
 196
 197    ok = try_update_scene_state(setup);
 198    if (!ok)
 199       return FALSE;
 200
 201    if (setup->fb.zsbuf &&
 202        ((setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
 203         util_format_is_depth_and_stencil(setup->fb.zsbuf->format))
 204       need_zsload = TRUE;
 205
 206    LP_DBG(DEBUG_SETUP, "%s color: %s depth: %s\n", __FUNCTION__,
 207           (setup->clear.flags & PIPE_CLEAR_COLOR) ? "clear": "load",
 208           need_zsload ? "clear": "load");
 209
 210    if (setup->fb.nr_cbufs) {
 211       if (setup->clear.flags & PIPE_CLEAR_COLOR) {
 212          ok = lp_scene_bin_everywhere( scene,
 213                                        LP_RAST_OP_CLEAR_COLOR,
 214                                        setup->clear.color );
 215          if (!ok)
 216             return FALSE;
 217       }
 218    }
 219
 220    if (setup->fb.zsbuf) {
 221       if (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) {
 222          if (!need_zsload)
 223             scene->has_depthstencil_clear = TRUE;
 224
 225          ok = lp_scene_bin_everywhere( scene,
 226                                        LP_RAST_OP_CLEAR_ZSTENCIL,
 227                                        lp_rast_arg_clearzs(
 228                                           setup->clear.zsvalue,
 229                                           setup->clear.zsmask));
 230          if (!ok)
 231             return FALSE;
 232       }
 233    }
 234
 235    if (setup->active_query) {
 236       ok = lp_scene_bin_everywhere( scene,
 237                                     LP_RAST_OP_BEGIN_QUERY,
 238                                     lp_rast_arg_query(setup->active_query) );
 239       if (!ok)
 240          return FALSE;
 241    }
 242
 243    setup->clear.flags = 0;
 244    setup->clear.zsmask = 0;
 245    setup->clear.zsvalue = 0;
 246
 247    LP_DBG(DEBUG_SETUP, "%s done\n", __FUNCTION__);
 248    return TRUE;
 249 }
 250
 251
 252 /* This basically bins and then flushes any outstanding full-screen
 253  * clears.
 254  *
 255  * TODO: fast path for fullscreen clears and no triangles.
 256  */
 257 static boolean
 258 execute_clears( struct lp_setup_context *setup )
 259 {
 260    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 261
 262    return begin_binning( setup );
 263 }
 264
 265 const char *states[] = {
 266    "FLUSHED",
 267    "CLEARED",
 268    "ACTIVE "
 269 };
 270
 271
 272 static boolean
 273 set_scene_state( struct lp_setup_context *setup,
 274                  enum setup_state new_state,
 275                  const char *reason)
 276 {
 277    unsigned old_state = setup->state;
 278
 279    if (old_state == new_state)
 280       return TRUE;
 281
 282    if (LP_DEBUG & DEBUG_SCENE) {
 283       debug_printf("%s old %s new %s%s%s\n",
 284                    __FUNCTION__,
 285                    states[old_state],
 286                    states[new_state],
 287                    (new_state == SETUP_FLUSHED) ? ": " : "",
 288                    (new_state == SETUP_FLUSHED) ? reason : "");
 289
 290       if (new_state == SETUP_FLUSHED && setup->scene)
 291          lp_debug_draw_bins_by_cmd_length(setup->scene);
 292    }
 293
 294    /* wait for a free/empty scene
 295     */
 296    if (old_state == SETUP_FLUSHED)
 297       lp_setup_get_empty_scene(setup);
 298
 299    switch (new_state) {
 300    case SETUP_CLEARED:
 301       break;
 302
 303    case SETUP_ACTIVE:
 304       if (!begin_binning( setup ))
 305          goto fail;
 306       break;
 307
 308    case SETUP_FLUSHED:
 309       if (old_state == SETUP_CLEARED)
 310          if (!execute_clears( setup ))
 311             goto fail;
 312
 313       lp_setup_rasterize_scene( setup );
 314       assert(setup->scene == NULL);
 315       break;
 316
 317    default:
 318       assert(0 && "invalid setup state mode");
 319       goto fail;
 320    }
 321
 322    setup->state = new_state;
 323    return TRUE;
 324
 325 fail:
 326    if (setup->scene) {
 327       lp_scene_end_rasterization(setup->scene);
 328       setup->scene = NULL;
 329    }
 330
 331    setup->state = SETUP_FLUSHED;
 332    lp_setup_reset( setup );
 333    return FALSE;
 334 }
 335
 336
 337 void
 338 lp_setup_flush( struct lp_setup_context *setup,
 339                 struct pipe_fence_handle **fence,
 340                 const char *reason)
 341 {
 342    set_scene_state( setup, SETUP_FLUSHED, reason );
 343
 344    if (fence) {
 345       lp_fence_reference((struct lp_fence **)fence, setup->last_fence);
 346    }
 347 }
 348
 349
 350 void
 351 lp_setup_bind_framebuffer( struct lp_setup_context *setup,
 352                            const struct pipe_framebuffer_state *fb )
 353 {
 354    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 355
 356    /* Flush any old scene.
 357     */
 358    set_scene_state( setup, SETUP_FLUSHED, __FUNCTION__ );
 359
 360    /*
 361     * Ensure the old scene is not reused.
 362     */
 363    assert(!setup->scene);
 364
 365    /* Set new state.  This will be picked up later when we next need a
 366     * scene.
 367     */
 368    util_copy_framebuffer_state(&setup->fb, fb);
 369    setup->framebuffer.x0 = 0;
 370    setup->framebuffer.y0 = 0;
 371    setup->framebuffer.x1 = fb->width-1;
 372    setup->framebuffer.y1 = fb->height-1;
 373    setup->dirty |= LP_SETUP_NEW_SCISSOR;
 374 }
 375
 376
 377 static boolean
 378 lp_setup_try_clear( struct lp_setup_context *setup,
 379                     const float *color,
 380                     double depth,
 381                     unsigned stencil,
 382                     unsigned flags )
 383 {
 384    uint32_t zsmask = 0;
 385    uint32_t zsvalue = 0;
 386    union lp_rast_cmd_arg color_arg;
 387    unsigned i;
 388
 389    LP_DBG(DEBUG_SETUP, "%s state %d\n", __FUNCTION__, setup->state);
 390
 391    if (flags & PIPE_CLEAR_COLOR) {
 392       for (i = 0; i < 4; i++)
 393          color_arg.clear_color[i] = float_to_ubyte(color[i]);
 394    }
 395
 396    if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 397       uint32_t zmask = (flags & PIPE_CLEAR_DEPTH) ? ~0 : 0;
 398       uint32_t smask = (flags & PIPE_CLEAR_STENCIL) ? ~0 : 0;
 399
 400       zsvalue = util_pack_z_stencil(setup->fb.zsbuf->format,
 401                                     depth,
 402                                     stencil);
 403
 404
 405       zsmask = util_pack_mask_z_stencil(setup->fb.zsbuf->format,
 406                                         zmask,
 407                                         smask);
 408
 409       zsvalue &= zsmask;
 410    }
 411
 412    if (setup->state == SETUP_ACTIVE) {
 413       struct lp_scene *scene = setup->scene;
 414
 415       /* Add the clear to existing scene.  In the unusual case where
 416        * both color and depth-stencil are being cleared when there's
 417        * already been some rendering, we could discard the currently
 418        * binned scene and start again, but I don't see that as being
 419        * a common usage.
 420        */
 421       if (flags & PIPE_CLEAR_COLOR) {
 422          if (!lp_scene_bin_everywhere( scene,
 423                                        LP_RAST_OP_CLEAR_COLOR,
 424                                        color_arg ))
 425             return FALSE;
 426       }
 427
 428       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 429          if (!lp_scene_bin_everywhere( scene,
 430                                        LP_RAST_OP_CLEAR_ZSTENCIL,
 431                                        lp_rast_arg_clearzs(zsvalue, zsmask) ))
 432             return FALSE;
 433       }
 434    }
 435    else {
 436       /* Put ourselves into the 'pre-clear' state, specifically to try
 437        * and accumulate multiple clears to color and depth_stencil
 438        * buffers which the app or state-tracker might issue
 439        * separately.
 440        */
 441       set_scene_state( setup, SETUP_CLEARED, __FUNCTION__ );
 442
 443       setup->clear.flags |= flags;
 444
 445       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 446          setup->clear.zsmask |= zsmask;
 447          setup->clear.zsvalue =
 448             (setup->clear.zsvalue & ~zsmask) | (zsvalue & zsmask);
 449       }
 450
 451       if (flags & PIPE_CLEAR_COLOR) {
 452          memcpy(setup->clear.color.clear_color,
 453                 &color_arg,
 454                 sizeof setup->clear.color.clear_color);
 455       }
 456    }
 457
 458    return TRUE;
 459 }
 460
 461 void
 462 lp_setup_clear( struct lp_setup_context *setup,
 463                 const float *color,
 464                 double depth,
 465                 unsigned stencil,
 466                 unsigned flags )
 467 {
 468    if (!lp_setup_try_clear( setup, color, depth, stencil, flags )) {
 469       lp_setup_flush(setup, NULL, __FUNCTION__);
 470
 471       if (!lp_setup_try_clear( setup, color, depth, stencil, flags ))
 472          assert(0);
 473    }
 474 }
 475
 476
 477
 478
 479
 480 void
 481 lp_setup_set_triangle_state( struct lp_setup_context *setup,
 482                              unsigned cull_mode,
 483                              boolean ccw_is_frontface,
 484                              boolean scissor,
 485                              boolean gl_rasterization_rules)
 486 {
 487    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 488
 489    setup->ccw_is_frontface = ccw_is_frontface;
 490    setup->cullmode = cull_mode;
 491    setup->triangle = first_triangle;
 492    setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f;
 493
 494    if (setup->scissor_test != scissor) {
 495       setup->dirty |= LP_SETUP_NEW_SCISSOR;
 496       setup->scissor_test = scissor;
 497    }
 498 }
 499
 500 void
 501 lp_setup_set_line_state( struct lp_setup_context *setup,
 502                          float line_width)
 503 {
 504    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 505
 506    setup->line_width = line_width;
 507 }
 508
 509 void
 510 lp_setup_set_point_state( struct lp_setup_context *setup,
 511                           float point_size,
 512                           boolean point_size_per_vertex,
 513                           uint sprite_coord_enable,
 514                           uint sprite_coord_origin)
 515 {
 516    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 517
 518    setup->point_size = point_size;
 519    setup->sprite_coord_enable = sprite_coord_enable;
 520    setup->sprite_coord_origin = sprite_coord_origin;
 521    setup->point_size_per_vertex = point_size_per_vertex;
 522 }
 523
 524 void
 525 lp_setup_set_setup_variant( struct lp_setup_context *setup,
 526                             const struct lp_setup_variant *variant)
 527 {
 528    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 529
 530    setup->setup.variant = variant;
 531 }
 532
 533 void
 534 lp_setup_set_fs_variant( struct lp_setup_context *setup,
 535                          struct lp_fragment_shader_variant *variant)
 536 {
 537    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__,
 538           variant);
 539    /* FIXME: reference count */
 540
 541    setup->fs.current.variant = variant;
 542    setup->dirty |= LP_SETUP_NEW_FS;
 543 }
 544
 545 void
 546 lp_setup_set_fs_constants(struct lp_setup_context *setup,
 547                           struct pipe_resource *buffer)
 548 {
 549    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) buffer);
 550
 551    pipe_resource_reference(&setup->constants.current, buffer);
 552
 553    setup->dirty |= LP_SETUP_NEW_CONSTANTS;
 554 }
 555
 556
 557 void
 558 lp_setup_set_alpha_ref_value( struct lp_setup_context *setup,
 559                               float alpha_ref_value )
 560 {
 561    LP_DBG(DEBUG_SETUP, "%s %f\n", __FUNCTION__, alpha_ref_value);
 562
 563    if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
 564       setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
 565       setup->dirty |= LP_SETUP_NEW_FS;
 566    }
 567 }
 568
 569 void
 570 lp_setup_set_stencil_ref_values( struct lp_setup_context *setup,
 571                                  const ubyte refs[2] )
 572 {
 573    LP_DBG(DEBUG_SETUP, "%s %d %d\n", __FUNCTION__, refs[0], refs[1]);
 574
 575    if (setup->fs.current.jit_context.stencil_ref_front != refs[0] ||
 576        setup->fs.current.jit_context.stencil_ref_back != refs[1]) {
 577       setup->fs.current.jit_context.stencil_ref_front = refs[0];
 578       setup->fs.current.jit_context.stencil_ref_back = refs[1];
 579       setup->dirty |= LP_SETUP_NEW_FS;
 580    }
 581 }
 582
 583 void
 584 lp_setup_set_blend_color( struct lp_setup_context *setup,
 585                           const struct pipe_blend_color *blend_color )
 586 {
 587    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 588
 589    assert(blend_color);
 590
 591    if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
 592       memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
 593       setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
 594    }
 595 }
 596
 597
 598 void
 599 lp_setup_set_scissor( struct lp_setup_context *setup,
 600                       const struct pipe_scissor_state *scissor )
 601 {
 602    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 603
 604    assert(scissor);
 605
 606    setup->scissor.x0 = scissor->minx;
 607    setup->scissor.x1 = scissor->maxx-1;
 608    setup->scissor.y0 = scissor->miny;
 609    setup->scissor.y1 = scissor->maxy-1;
 610    setup->dirty |= LP_SETUP_NEW_SCISSOR;
 611 }
 612
 613
 614 void
 615 lp_setup_set_flatshade_first( struct lp_setup_context *setup,
 616                               boolean flatshade_first )
 617 {
 618    setup->flatshade_first = flatshade_first;
 619 }
 620
 621
 622 void
 623 lp_setup_set_vertex_info( struct lp_setup_context *setup,
 624                           struct vertex_info *vertex_info )
 625 {
 626    /* XXX: just silently holding onto the pointer:
 627     */
 628    setup->vertex_info = vertex_info;
 629 }
 630
 631
 632 /**
 633  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 634  */
 635 void
 636 lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
 637                                     unsigned num,
 638                                     struct pipe_sampler_view **views)
 639 {
 640    unsigned i;
 641
 642    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 643
 644    assert(num <= PIPE_MAX_SAMPLERS);
 645
 646    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 647       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 648
 649       if (view) {
 650          struct pipe_resource *tex = view->texture;
 651          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 652          struct lp_jit_texture *jit_tex;
 653          jit_tex = &setup->fs.current.jit_context.textures[i];
 654          jit_tex->width = tex->width0;
 655          jit_tex->height = tex->height0;
 656          jit_tex->depth = tex->depth0;
 657          jit_tex->first_level = view->u.tex.first_level;
 658          jit_tex->last_level = tex->last_level;
 659
 660          /* We're referencing the texture's internal data, so save a
 661           * reference to it.
 662           */
 663          pipe_resource_reference(&setup->fs.current_tex[i], tex);
 664
 665          if (!lp_tex->dt) {
 666             /* regular texture - setup array of mipmap level pointers */
 667             int j;
 668             for (j = view->u.tex.first_level; j <= tex->last_level; j++) {
 669                jit_tex->data[j] =
 670                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 671                                                  LP_TEX_LAYOUT_LINEAR);
 672                jit_tex->row_stride[j] = lp_tex->row_stride[j];
 673                jit_tex->img_stride[j] = lp_tex->img_stride[j];
 674
 675                if ((LP_PERF & PERF_TEX_MEM) ||
 676                    !jit_tex->data[j]) {
 677                   /* out of memory - use dummy tile memory */
 678                   jit_tex->data[j] = lp_dummy_tile;
 679                   jit_tex->width = TILE_SIZE/8;
 680                   jit_tex->height = TILE_SIZE/8;
 681                   jit_tex->depth = 1;
 682                   jit_tex->first_level = 0;
 683                   jit_tex->last_level = 0;
 684                   jit_tex->row_stride[j] = 0;
 685                   jit_tex->img_stride[j] = 0;
 686                }
 687             }
 688          }
 689          else {
 690             /* display target texture/surface */
 691             /*
 692              * XXX: Where should this be unmapped?
 693              */
 694             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 695             struct sw_winsys *winsys = screen->winsys;
 696             jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 697                                                          PIPE_TRANSFER_READ);
 698             jit_tex->row_stride[0] = lp_tex->row_stride[0];
 699             jit_tex->img_stride[0] = lp_tex->img_stride[0];
 700             assert(jit_tex->data[0]);
 701          }
 702       }
 703    }
 704
 705    setup->dirty |= LP_SETUP_NEW_FS;
 706 }
 707
 708
 709 /**
 710  * Called during state validation when LP_NEW_SAMPLER is set.
 711  */
 712 void
 713 lp_setup_set_fragment_sampler_state(struct lp_setup_context *setup,
 714                                     unsigned num,
 715                                     const struct pipe_sampler_state **samplers)
 716 {
 717    unsigned i;
 718
 719    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 720
 721    assert(num <= PIPE_MAX_SAMPLERS);
 722
 723    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 724       const struct pipe_sampler_state *sampler = i < num ? samplers[i] : NULL;
 725
 726       if (sampler) {
 727          struct lp_jit_texture *jit_tex;
 728          jit_tex = &setup->fs.current.jit_context.textures[i];
 729
 730          jit_tex->min_lod = sampler->min_lod;
 731          jit_tex->max_lod = sampler->max_lod;
 732          jit_tex->lod_bias = sampler->lod_bias;
 733          COPY_4V(jit_tex->border_color, sampler->border_color.f);
 734       }
 735    }
 736
 737    setup->dirty |= LP_SETUP_NEW_FS;
 738 }
 739
 740
 741 /**
 742  * Is the given texture referenced by any scene?
 743  * Note: we have to check all scenes including any scenes currently
 744  * being rendered and the current scene being built.
 745  */
 746 unsigned
 747 lp_setup_is_resource_referenced( const struct lp_setup_context *setup,
 748                                 const struct pipe_resource *texture )
 749 {
 750    unsigned i;
 751
 752    /* check the render targets */
 753    for (i = 0; i < setup->fb.nr_cbufs; i++) {
 754       if (setup->fb.cbufs[i]->texture == texture)
 755          return LP_REFERENCED_FOR_READ | LP_REFERENCED_FOR_WRITE;
 756    }
 757    if (setup->fb.zsbuf && setup->fb.zsbuf->texture == texture) {
 758       return LP_REFERENCED_FOR_READ | LP_REFERENCED_FOR_WRITE;
 759    }
 760
 761    /* check textures referenced by the scene */
 762    for (i = 0; i < Elements(setup->scenes); i++) {
 763       if (lp_scene_is_resource_referenced(setup->scenes[i], texture)) {
 764          return LP_REFERENCED_FOR_READ;
 765       }
 766    }
 767
 768    return LP_UNREFERENCED;
 769 }
 770
 771
 772 /**
 773  * Called by vbuf code when we're about to draw something.
 774  */
 775 static boolean
 776 try_update_scene_state( struct lp_setup_context *setup )
 777 {
 778    boolean new_scene = (setup->fs.stored == NULL);
 779    struct lp_scene *scene = setup->scene;
 780
 781    assert(scene);
 782
 783    if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
 784       uint8_t *stored;
 785       unsigned i, j;
 786
 787       stored = lp_scene_alloc_aligned(scene, 4 * 16, 16);
 788       if (!stored) {
 789          assert(!new_scene);
 790          return FALSE;
 791       }
 792
 793       /* smear each blend color component across 16 ubyte elements */
 794       for (i = 0; i < 4; ++i) {
 795          uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
 796          for (j = 0; j < 16; ++j)
 797             stored[i*16 + j] = c;
 798       }
 799
 800       setup->blend_color.stored = stored;
 801       setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
 802       setup->dirty |= LP_SETUP_NEW_FS;
 803    }
 804
 805    if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
 806       struct pipe_resource *buffer = setup->constants.current;
 807
 808       if(buffer) {
 809          unsigned current_size = buffer->width0;
 810          const void *current_data = llvmpipe_resource_data(buffer);
 811
 812          /* TODO: copy only the actually used constants? */
 813
 814          if(setup->constants.stored_size != current_size ||
 815             !setup->constants.stored_data ||
 816             memcmp(setup->constants.stored_data,
 817                    current_data,
 818                    current_size) != 0) {
 819             void *stored;
 820
 821             stored = lp_scene_alloc(scene, current_size);
 822             if (!stored) {
 823                assert(!new_scene);
 824                return FALSE;
 825             }
 826
 827             memcpy(stored,
 828                    current_data,
 829                    current_size);
 830             setup->constants.stored_size = current_size;
 831             setup->constants.stored_data = stored;
 832          }
 833       }
 834       else {
 835          setup->constants.stored_size = 0;
 836          setup->constants.stored_data = NULL;
 837       }
 838
 839       setup->fs.current.jit_context.constants = setup->constants.stored_data;
 840       setup->dirty |= LP_SETUP_NEW_FS;
 841    }
 842
 843
 844    if (setup->dirty & LP_SETUP_NEW_FS) {
 845       if (!setup->fs.stored ||
 846           memcmp(setup->fs.stored,
 847                  &setup->fs.current,
 848                  sizeof setup->fs.current) != 0)
 849       {
 850          struct lp_rast_state *stored;
 851          uint i;
 852
 853          /* The fs state that's been stored in the scene is different from
 854           * the new, current state.  So allocate a new lp_rast_state object
 855           * and append it to the bin's setup data buffer.
 856           */
 857          stored = (struct lp_rast_state *) lp_scene_alloc(scene, sizeof *stored);
 858          if (!stored) {
 859             assert(!new_scene);
 860             return FALSE;
 861          }
 862
 863          memcpy(stored,
 864                 &setup->fs.current,
 865                 sizeof setup->fs.current);
 866          setup->fs.stored = stored;
 867
 868          /* The scene now references the textures in the rasterization
 869           * state record.  Note that now.
 870           */
 871          for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 872             if (setup->fs.current_tex[i]) {
 873                if (!lp_scene_add_resource_reference(scene,
 874                                                     setup->fs.current_tex[i],
 875                                                     new_scene)) {
 876                   assert(!new_scene);
 877                   return FALSE;
 878                }
 879             }
 880          }
 881       }
 882    }
 883
 884    if (setup->dirty & LP_SETUP_NEW_SCISSOR) {
 885       setup->draw_region = setup->framebuffer;
 886       if (setup->scissor_test) {
 887          u_rect_possible_intersection(&setup->scissor,
 888                                       &setup->draw_region);
 889       }
 890    }
 891
 892    setup->dirty = 0;
 893
 894    assert(setup->fs.stored);
 895    return TRUE;
 896 }
 897
 898 boolean
 899 lp_setup_update_state( struct lp_setup_context *setup,
 900                        boolean update_scene )
 901 {
 902    /* Some of the 'draw' pipeline stages may have changed some driver state.
 903     * Make sure we've processed those state changes before anything else.
 904     *
 905     * XXX this is the only place where llvmpipe_context is used in the
 906     * setup code.  This may get refactored/changed...
 907     */
 908    {
 909       struct llvmpipe_context *lp = llvmpipe_context(setup->pipe);
 910       if (lp->dirty) {
 911          llvmpipe_update_derived(lp);
 912       }
 913
 914       if (lp->setup->dirty) {
 915          llvmpipe_update_setup(lp);
 916       }
 917
 918       assert(setup->setup.variant);
 919
 920       /* Will probably need to move this somewhere else, just need
 921        * to know about vertex shader point size attribute.
 922        */
 923       setup->psize = lp->psize_slot;
 924
 925       assert(lp->dirty == 0);
 926
 927       assert(lp->setup_variant.key.size ==
 928              setup->setup.variant->key.size);
 929
 930       assert(memcmp(&lp->setup_variant.key,
 931                     &setup->setup.variant->key,
 932                     setup->setup.variant->key.size) == 0);
 933    }
 934
 935    if (update_scene && setup->state != SETUP_ACTIVE) {
 936       if (!set_scene_state( setup, SETUP_ACTIVE, __FUNCTION__ ))
 937          return FALSE;
 938    }
 939
 940    /* Only call into update_scene_state() if we already have a
 941     * scene:
 942     */
 943    if (update_scene && setup->scene) {
 944       assert(setup->state == SETUP_ACTIVE);
 945
 946       if (try_update_scene_state(setup))
 947          return TRUE;
 948
 949       /* Update failed, try to restart the scene.
 950        *
 951        * Cannot call lp_setup_flush_and_restart() directly here
 952        * because of potential recursion.
 953        */
 954       if (!set_scene_state(setup, SETUP_FLUSHED, __FUNCTION__))
 955          return FALSE;
 956
 957       if (!set_scene_state(setup, SETUP_ACTIVE, __FUNCTION__))
 958          return FALSE;
 959
 960       if (!setup->scene)
 961          return FALSE;
 962
 963       return try_update_scene_state(setup);
 964    }
 965
 966    return TRUE;
 967 }
 968
 969
 970
 971 /* Only caller is lp_setup_vbuf_destroy()
 972  */
 973 void
 974 lp_setup_destroy( struct lp_setup_context *setup )
 975 {
 976    uint i;
 977
 978    lp_setup_reset( setup );
 979
 980    util_unreference_framebuffer_state(&setup->fb);
 981
 982    for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 983       pipe_resource_reference(&setup->fs.current_tex[i], NULL);
 984    }
 985
 986    pipe_resource_reference(&setup->constants.current, NULL);
 987
 988    /* free the scenes in the 'empty' queue */
 989    for (i = 0; i < Elements(setup->scenes); i++) {
 990       struct lp_scene *scene = setup->scenes[i];
 991
 992       if (scene->fence)
 993          lp_fence_wait(scene->fence);
 994
 995       lp_scene_destroy(scene);
 996    }
 997
 998    lp_fence_reference(&setup->last_fence, NULL);
 999
1000    FREE( setup );
1001 }
1002
1003
1004 /**
1005  * Create a new primitive tiling engine.  Plug it into the backend of
1006  * the draw module.  Currently also creates a rasterizer to use with
1007  * it.
1008  */
1009 struct lp_setup_context *
1010 lp_setup_create( struct pipe_context *pipe,
1011                  struct draw_context *draw )
1012 {
1013    struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
1014    struct lp_setup_context *setup;
1015    unsigned i;
1016
1017    setup = CALLOC_STRUCT(lp_setup_context);
1018    if (!setup) {
1019       goto no_setup;
1020    }
1021
1022    lp_setup_init_vbuf(setup);
1023
1024    /* Used only in update_state():
1025     */
1026    setup->pipe = pipe;
1027
1028
1029    setup->num_threads = screen->num_threads;
1030    setup->vbuf = draw_vbuf_stage(draw, &setup->base);
1031    if (!setup->vbuf) {
1032       goto no_vbuf;
1033    }
1034
1035    draw_set_rasterize_stage(draw, setup->vbuf);
1036    draw_set_render(draw, &setup->base);
1037
1038    /* create some empty scenes */
1039    for (i = 0; i < MAX_SCENES; i++) {
1040       setup->scenes[i] = lp_scene_create( pipe );
1041       if (!setup->scenes[i]) {
1042          goto no_scenes;
1043       }
1044    }
1045
1046    setup->triangle = first_triangle;
1047    setup->line     = first_line;
1048    setup->point    = first_point;
1049
1050    setup->dirty = ~0;
1051
1052    return setup;
1053
1054 no_scenes:
1055    for (i = 0; i < MAX_SCENES; i++) {
1056       if (setup->scenes[i]) {
1057          lp_scene_destroy(setup->scenes[i]);
1058       }
1059    }
1060
1061    setup->vbuf->destroy(setup->vbuf);
1062 no_vbuf:
1063    FREE(setup);
1064 no_setup:
1065    return NULL;
1066 }
1067
1068
1069 /**
1070  * Put a BeginQuery command into all bins.
1071  */
1072 void
1073 lp_setup_begin_query(struct lp_setup_context *setup,
1074                      struct llvmpipe_query *pq)
1075 {
1076    /* init the query to its beginning state */
1077    assert(setup->active_query == NULL);
1078
1079    set_scene_state(setup, SETUP_ACTIVE, "begin_query");
1080
1081    setup->active_query = pq;
1082
1083    if (setup->scene) {
1084       if (!lp_scene_bin_everywhere(setup->scene,
1085                                    LP_RAST_OP_BEGIN_QUERY,
1086                                    lp_rast_arg_query(pq))) {
1087
1088          if (!lp_setup_flush_and_restart(setup))
1089             return;
1090
1091          if (!lp_scene_bin_everywhere(setup->scene,
1092                                       LP_RAST_OP_BEGIN_QUERY,
1093                                       lp_rast_arg_query(pq))) {
1094             return;
1095          }
1096       }
1097    }
1098 }
1099
1100
1101 /**
1102  * Put an EndQuery command into all bins.
1103  */
1104 void
1105 lp_setup_end_query(struct lp_setup_context *setup, struct llvmpipe_query *pq)
1106 {
1107    union lp_rast_cmd_arg dummy = { 0 };
1108
1109    set_scene_state(setup, SETUP_ACTIVE, "end_query");
1110
1111    assert(setup->active_query == pq);
1112    setup->active_query = NULL;
1113
1114    /* Setup will automatically re-issue any query which carried over a
1115     * scene boundary, and the rasterizer automatically "ends" queries
1116     * which are active at the end of a scene, so there is no need to
1117     * retry this commands on failure.
1118     */
1119    if (setup->scene) {
1120       /* pq->fence should be the fence of the *last* scene which
1121        * contributed to the query result.
1122        */
1123       lp_fence_reference(&pq->fence, setup->scene->fence);
1124
1125       if (!lp_scene_bin_everywhere(setup->scene,
1126                                    LP_RAST_OP_END_QUERY,
1127                                    dummy)) {
1128          lp_setup_flush(setup, NULL, __FUNCTION__);
1129       }
1130    }
1131    else {
1132       lp_fence_reference(&pq->fence, setup->last_fence);
1133    }
1134 }
1135
1136
1137 boolean
1138 lp_setup_flush_and_restart(struct lp_setup_context *setup)
1139 {
1140    if (0) debug_printf("%s\n", __FUNCTION__);
1141
1142    assert(setup->state == SETUP_ACTIVE);
1143
1144    if (!set_scene_state(setup, SETUP_FLUSHED, __FUNCTION__))
1145       return FALSE;
1146
1147    if (!lp_setup_update_state(setup, TRUE))
1148       return FALSE;
1149
1150    return TRUE;
1151 }
1152
1153