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_coord_enable,
 494                           uint sprite_coord_origin)
 495 {
 496    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 497
 498    setup->point_size = point_size;
 499    setup->sprite_coord_enable = sprite_coord_enable;
 500    setup->sprite_coord_origin = sprite_coord_origin;
 501    setup->point_size_per_vertex = point_size_per_vertex;
 502 }
 503
 504 void
 505 lp_setup_set_fs_inputs( struct lp_setup_context *setup,
 506                         const struct lp_shader_input *input,
 507                         unsigned nr )
 508 {
 509    LP_DBG(DEBUG_SETUP, "%s %p %u\n", __FUNCTION__, (void *) input, nr);
 510
 511    memcpy( setup->fs.input, input, nr * sizeof input[0] );
 512    setup->fs.nr_inputs = nr;
 513 }
 514
 515 void
 516 lp_setup_set_fs_variant( struct lp_setup_context *setup,
 517                          struct lp_fragment_shader_variant *variant)
 518 {
 519    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__,
 520           variant);
 521    /* FIXME: reference count */
 522
 523    setup->fs.current.variant = variant;
 524    setup->dirty |= LP_SETUP_NEW_FS;
 525 }
 526
 527 void
 528 lp_setup_set_fs_constants(struct lp_setup_context *setup,
 529                           struct pipe_resource *buffer)
 530 {
 531    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) buffer);
 532
 533    pipe_resource_reference(&setup->constants.current, buffer);
 534
 535    setup->dirty |= LP_SETUP_NEW_CONSTANTS;
 536 }
 537
 538
 539 void
 540 lp_setup_set_alpha_ref_value( struct lp_setup_context *setup,
 541                               float alpha_ref_value )
 542 {
 543    LP_DBG(DEBUG_SETUP, "%s %f\n", __FUNCTION__, alpha_ref_value);
 544
 545    if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
 546       setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
 547       setup->dirty |= LP_SETUP_NEW_FS;
 548    }
 549 }
 550
 551 void
 552 lp_setup_set_stencil_ref_values( struct lp_setup_context *setup,
 553                                  const ubyte refs[2] )
 554 {
 555    LP_DBG(DEBUG_SETUP, "%s %d %d\n", __FUNCTION__, refs[0], refs[1]);
 556
 557    if (setup->fs.current.jit_context.stencil_ref_front != refs[0] ||
 558        setup->fs.current.jit_context.stencil_ref_back != refs[1]) {
 559       setup->fs.current.jit_context.stencil_ref_front = refs[0];
 560       setup->fs.current.jit_context.stencil_ref_back = refs[1];
 561       setup->dirty |= LP_SETUP_NEW_FS;
 562    }
 563 }
 564
 565 void
 566 lp_setup_set_blend_color( struct lp_setup_context *setup,
 567                           const struct pipe_blend_color *blend_color )
 568 {
 569    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 570
 571    assert(blend_color);
 572
 573    if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
 574       memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
 575       setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
 576    }
 577 }
 578
 579
 580 void
 581 lp_setup_set_scissor( struct lp_setup_context *setup,
 582                       const struct pipe_scissor_state *scissor )
 583 {
 584    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 585
 586    assert(scissor);
 587
 588    setup->scissor.x0 = scissor->minx;
 589    setup->scissor.x1 = scissor->maxx-1;
 590    setup->scissor.y0 = scissor->miny;
 591    setup->scissor.y1 = scissor->maxy-1;
 592    setup->dirty |= LP_SETUP_NEW_SCISSOR;
 593 }
 594
 595
 596 void
 597 lp_setup_set_flatshade_first( struct lp_setup_context *setup,
 598                               boolean flatshade_first )
 599 {
 600    setup->flatshade_first = flatshade_first;
 601 }
 602
 603
 604 void
 605 lp_setup_set_vertex_info( struct lp_setup_context *setup,
 606                           struct vertex_info *vertex_info )
 607 {
 608    /* XXX: just silently holding onto the pointer:
 609     */
 610    setup->vertex_info = vertex_info;
 611 }
 612
 613
 614 /**
 615  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 616  */
 617 void
 618 lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
 619                                     unsigned num,
 620                                     struct pipe_sampler_view **views,
 621                                     const struct pipe_sampler_state **samplers)
 622 {
 623    unsigned i;
 624
 625    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 626
 627    assert(num <= PIPE_MAX_SAMPLERS);
 628
 629    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 630       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 631
 632       if(view) {
 633          struct pipe_resource *tex = view->texture;
 634          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 635          struct lp_jit_texture *jit_tex;
 636          jit_tex = &setup->fs.current.jit_context.textures[i];
 637          jit_tex->width = tex->width0;
 638          jit_tex->height = tex->height0;
 639          jit_tex->depth = tex->depth0;
 640          jit_tex->last_level = tex->last_level;
 641
 642          /* sampler state */
 643          jit_tex->min_lod = samplers[i]->min_lod;
 644          jit_tex->max_lod = samplers[i]->max_lod;
 645          jit_tex->lod_bias = samplers[i]->lod_bias;
 646          COPY_4V(jit_tex->border_color, samplers[i]->border_color);
 647
 648          /* We're referencing the texture's internal data, so save a
 649           * reference to it.
 650           */
 651          pipe_resource_reference(&setup->fs.current_tex[i], tex);
 652
 653          if (!lp_tex->dt) {
 654             /* regular texture - setup array of mipmap level pointers */
 655             int j;
 656             for (j = 0; j <= tex->last_level; j++) {
 657                jit_tex->data[j] =
 658                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 659                                                  LP_TEX_LAYOUT_LINEAR);
 660                jit_tex->row_stride[j] = lp_tex->row_stride[j];
 661                jit_tex->img_stride[j] = lp_tex->img_stride[j];
 662
 663                if ((LP_PERF & PERF_TEX_MEM) ||
 664                    !jit_tex->data[j]) {
 665                   /* out of memory - use dummy tile memory */
 666                   jit_tex->data[j] = lp_dummy_tile;
 667                   jit_tex->width = TILE_SIZE/8;
 668                   jit_tex->height = TILE_SIZE/8;
 669                   jit_tex->depth = 1;
 670                   jit_tex->last_level = 0;
 671                   jit_tex->row_stride[j] = 0;
 672                   jit_tex->img_stride[j] = 0;
 673                }
 674             }
 675          }
 676          else {
 677             /* display target texture/surface */
 678             /*
 679              * XXX: Where should this be unmapped?
 680              */
 681             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 682             struct sw_winsys *winsys = screen->winsys;
 683             jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 684                                                          PIPE_TRANSFER_READ);
 685             jit_tex->row_stride[0] = lp_tex->row_stride[0];
 686             jit_tex->img_stride[0] = lp_tex->img_stride[0];
 687             assert(jit_tex->data[0]);
 688          }
 689       }
 690    }
 691
 692    setup->dirty |= LP_SETUP_NEW_FS;
 693 }
 694
 695
 696 /**
 697  * Is the given texture referenced by any scene?
 698  * Note: we have to check all scenes including any scenes currently
 699  * being rendered and the current scene being built.
 700  */
 701 unsigned
 702 lp_setup_is_resource_referenced( const struct lp_setup_context *setup,
 703                                 const struct pipe_resource *texture )
 704 {
 705    unsigned i;
 706
 707    /* check the render targets */
 708    for (i = 0; i < setup->fb.nr_cbufs; i++) {
 709       if (setup->fb.cbufs[i]->texture == texture)
 710          return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 711    }
 712    if (setup->fb.zsbuf && setup->fb.zsbuf->texture == texture) {
 713       return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 714    }
 715
 716    /* check textures referenced by the scene */
 717    for (i = 0; i < Elements(setup->scenes); i++) {
 718       if (lp_scene_is_resource_referenced(setup->scenes[i], texture)) {
 719          return PIPE_REFERENCED_FOR_READ;
 720       }
 721    }
 722
 723    return PIPE_UNREFERENCED;
 724 }
 725
 726
 727 /**
 728  * Called by vbuf code when we're about to draw something.
 729  */
 730 static boolean
 731 try_update_scene_state( struct lp_setup_context *setup )
 732 {
 733    boolean new_scene = (setup->fs.stored == NULL);
 734    struct lp_scene *scene = setup->scene;
 735
 736    assert(scene);
 737
 738    if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
 739       uint8_t *stored;
 740       unsigned i, j;
 741
 742       stored = lp_scene_alloc_aligned(scene, 4 * 16, 16);
 743       if (!stored) {
 744          assert(!new_scene);
 745          return FALSE;
 746       }
 747
 748       /* smear each blend color component across 16 ubyte elements */
 749       for (i = 0; i < 4; ++i) {
 750          uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
 751          for (j = 0; j < 16; ++j)
 752             stored[i*16 + j] = c;
 753       }
 754
 755       setup->blend_color.stored = stored;
 756       setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
 757       setup->dirty |= LP_SETUP_NEW_FS;
 758    }
 759
 760    if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
 761       struct pipe_resource *buffer = setup->constants.current;
 762
 763       if(buffer) {
 764          unsigned current_size = buffer->width0;
 765          const void *current_data = llvmpipe_resource_data(buffer);
 766
 767          /* TODO: copy only the actually used constants? */
 768
 769          if(setup->constants.stored_size != current_size ||
 770             !setup->constants.stored_data ||
 771             memcmp(setup->constants.stored_data,
 772                    current_data,
 773                    current_size) != 0) {
 774             void *stored;
 775
 776             stored = lp_scene_alloc(scene, current_size);
 777             if (!stored) {
 778                assert(!new_scene);
 779                return FALSE;
 780             }
 781
 782             memcpy(stored,
 783                    current_data,
 784                    current_size);
 785             setup->constants.stored_size = current_size;
 786             setup->constants.stored_data = stored;
 787          }
 788       }
 789       else {
 790          setup->constants.stored_size = 0;
 791          setup->constants.stored_data = NULL;
 792       }
 793
 794       setup->fs.current.jit_context.constants = setup->constants.stored_data;
 795       setup->dirty |= LP_SETUP_NEW_FS;
 796    }
 797
 798
 799    if (setup->dirty & LP_SETUP_NEW_FS) {
 800       if (!setup->fs.stored ||
 801           memcmp(setup->fs.stored,
 802                  &setup->fs.current,
 803                  sizeof setup->fs.current) != 0)
 804       {
 805          struct lp_rast_state *stored;
 806          uint i;
 807
 808          /* The fs state that's been stored in the scene is different from
 809           * the new, current state.  So allocate a new lp_rast_state object
 810           * and append it to the bin's setup data buffer.
 811           */
 812          stored = (struct lp_rast_state *) lp_scene_alloc(scene, sizeof *stored);
 813          if (!stored) {
 814             assert(!new_scene);
 815             return FALSE;
 816          }
 817
 818          memcpy(stored,
 819                 &setup->fs.current,
 820                 sizeof setup->fs.current);
 821          setup->fs.stored = stored;
 822
 823          /* The scene now references the textures in the rasterization
 824           * state record.  Note that now.
 825           */
 826          for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 827             if (setup->fs.current_tex[i]) {
 828                if (!lp_scene_add_resource_reference(scene,
 829                                                     setup->fs.current_tex[i],
 830                                                     new_scene)) {
 831                   assert(!new_scene);
 832                   return FALSE;
 833                }
 834             }
 835          }
 836       }
 837    }
 838
 839    if (setup->dirty & LP_SETUP_NEW_SCISSOR) {
 840       setup->draw_region = setup->framebuffer;
 841       if (setup->scissor_test) {
 842          u_rect_possible_intersection(&setup->scissor,
 843                                       &setup->draw_region);
 844       }
 845    }
 846
 847    setup->dirty = 0;
 848
 849    assert(setup->fs.stored);
 850    return TRUE;
 851 }
 852
 853 void
 854 lp_setup_update_state( struct lp_setup_context *setup,
 855                        boolean update_scene )
 856 {
 857    /* Some of the 'draw' pipeline stages may have changed some driver state.
 858     * Make sure we've processed those state changes before anything else.
 859     *
 860     * XXX this is the only place where llvmpipe_context is used in the
 861     * setup code.  This may get refactored/changed...
 862     */
 863    {
 864       struct llvmpipe_context *lp = llvmpipe_context(setup->pipe);
 865       if (lp->dirty) {
 866          llvmpipe_update_derived(lp);
 867       }
 868
 869       /* Will probably need to move this somewhere else, just need
 870        * to know about vertex shader point size attribute.
 871        */
 872       setup->psize = lp->psize_slot;
 873
 874       assert(lp->dirty == 0);
 875    }
 876
 877    if (update_scene)
 878       set_scene_state( setup, SETUP_ACTIVE, __FUNCTION__ );
 879
 880    /* Only call into update_scene_state() if we already have a
 881     * scene:
 882     */
 883    if (update_scene && setup->scene) {
 884       assert(setup->state == SETUP_ACTIVE);
 885       if (!try_update_scene_state(setup)) {
 886          lp_setup_flush_and_restart(setup);
 887          if (!try_update_scene_state(setup))
 888             assert(0);
 889       }
 890    }
 891 }
 892
 893
 894
 895 /* Only caller is lp_setup_vbuf_destroy()
 896  */
 897 void
 898 lp_setup_destroy( struct lp_setup_context *setup )
 899 {
 900    uint i;
 901
 902    lp_setup_reset( setup );
 903
 904    util_unreference_framebuffer_state(&setup->fb);
 905
 906    for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 907       pipe_resource_reference(&setup->fs.current_tex[i], NULL);
 908    }
 909
 910    pipe_resource_reference(&setup->constants.current, NULL);
 911
 912    /* free the scenes in the 'empty' queue */
 913    for (i = 0; i < Elements(setup->scenes); i++) {
 914       struct lp_scene *scene = setup->scenes[i];
 915
 916       if (scene->fence)
 917          lp_fence_wait(scene->fence);
 918
 919       lp_scene_destroy(scene);
 920    }
 921
 922    FREE( setup );
 923 }
 924
 925
 926 /**
 927  * Create a new primitive tiling engine.  Plug it into the backend of
 928  * the draw module.  Currently also creates a rasterizer to use with
 929  * it.
 930  */
 931 struct lp_setup_context *
 932 lp_setup_create( struct pipe_context *pipe,
 933                  struct draw_context *draw )
 934 {
 935    struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
 936    struct lp_setup_context *setup = CALLOC_STRUCT(lp_setup_context);
 937    unsigned i;
 938
 939    if (!setup)
 940       return NULL;
 941
 942    lp_setup_init_vbuf(setup);
 943
 944    /* Used only in update_state():
 945     */
 946    setup->pipe = pipe;
 947
 948
 949    setup->num_threads = screen->num_threads;
 950    setup->vbuf = draw_vbuf_stage(draw, &setup->base);
 951    if (!setup->vbuf)
 952       goto fail;
 953
 954    draw_set_rasterize_stage(draw, setup->vbuf);
 955    draw_set_render(draw, &setup->base);
 956
 957    /* create some empty scenes */
 958    for (i = 0; i < MAX_SCENES; i++) {
 959       setup->scenes[i] = lp_scene_create( pipe );
 960    }
 961
 962    setup->triangle = first_triangle;
 963    setup->line     = first_line;
 964    setup->point    = first_point;
 965
 966    setup->dirty = ~0;
 967
 968    return setup;
 969
 970 fail:
 971    if (setup->vbuf)
 972       ;
 973
 974    FREE(setup);
 975    return NULL;
 976 }
 977
 978
 979 /**
 980  * Put a BeginQuery command into all bins.
 981  */
 982 void
 983 lp_setup_begin_query(struct lp_setup_context *setup,
 984                      struct llvmpipe_query *pq)
 985 {
 986    /* init the query to its beginning state */
 987    assert(setup->active_query == NULL);
 988
 989    if (setup->scene) {
 990       if (!lp_scene_bin_everywhere(setup->scene,
 991                                    LP_RAST_OP_BEGIN_QUERY,
 992                                    lp_rast_arg_query(pq))) {
 993
 994          lp_setup_flush_and_restart(setup);
 995
 996          if (!lp_scene_bin_everywhere(setup->scene,
 997                                       LP_RAST_OP_BEGIN_QUERY,
 998                                       lp_rast_arg_query(pq))) {
 999             assert(0);
1000             return;
1001          }
1002       }
1003    }
1004
1005    setup->active_query = pq;
1006 }
1007
1008
1009 /**
1010  * Put an EndQuery command into all bins.
1011  */
1012 void
1013 lp_setup_end_query(struct lp_setup_context *setup, struct llvmpipe_query *pq)
1014 {
1015    union lp_rast_cmd_arg dummy = { 0 };
1016
1017    assert(setup->active_query == pq);
1018    setup->active_query = NULL;
1019
1020    /* Setup will automatically re-issue any query which carried over a
1021     * scene boundary, and the rasterizer automatically "ends" queries
1022     * which are active at the end of a scene, so there is no need to
1023     * retry this commands on failure.
1024     */
1025    if (setup->scene) {
1026       /* pq->fence should be the fence of the *last* scene which
1027        * contributed to the query result.
1028        */
1029       lp_fence_reference(&pq->fence, setup->scene->fence);
1030
1031       if (!lp_scene_bin_everywhere(setup->scene,
1032                                    LP_RAST_OP_END_QUERY,
1033                                    dummy)) {
1034          lp_setup_flush(setup, 0, NULL, __FUNCTION__);
1035       }
1036    }
1037    else {
1038       lp_fence_reference(&pq->fence, setup->last_fence);
1039    }
1040 }
1041
1042
1043 void
1044 lp_setup_flush_and_restart(struct lp_setup_context *setup)
1045 {
1046    if (0) debug_printf("%s\n", __FUNCTION__);
1047
1048    assert(setup->state == SETUP_ACTIVE);
1049    set_scene_state(setup, SETUP_FLUSHED, __FUNCTION__);
1050    lp_setup_update_state(setup, TRUE);
1051 }
1052
1053