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