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       uint32_t zmask = (flags & PIPE_CLEAR_DEPTH) ? ~0 : 0;
 381       uint32_t smask = (flags & PIPE_CLEAR_STENCIL) ? ~0 : 0;
 382
 383       zsvalue = util_pack_z_stencil(setup->fb.zsbuf->format,
 384                                     depth,
 385                                     stencil);
 386
 387
 388       zsmask = util_pack_mask_z_stencil(setup->fb.zsbuf->format,
 389                                         zmask,
 390                                         smask);
 391
 392       zsvalue &= zsmask;
 393    }
 394
 395    if (setup->state == SETUP_ACTIVE) {
 396       struct lp_scene *scene = setup->scene;
 397
 398       /* Add the clear to existing scene.  In the unusual case where
 399        * both color and depth-stencil are being cleared when there's
 400        * already been some rendering, we could discard the currently
 401        * binned scene and start again, but I don't see that as being
 402        * a common usage.
 403        */
 404       if (flags & PIPE_CLEAR_COLOR) {
 405          if (!lp_scene_bin_everywhere( scene,
 406                                        LP_RAST_OP_CLEAR_COLOR,
 407                                        color_arg ))
 408             return FALSE;
 409       }
 410
 411       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 412          if (!lp_scene_bin_everywhere( scene,
 413                                        LP_RAST_OP_CLEAR_ZSTENCIL,
 414                                        lp_rast_arg_clearzs(zsvalue, zsmask) ))
 415             return FALSE;
 416       }
 417    }
 418    else {
 419       /* Put ourselves into the 'pre-clear' state, specifically to try
 420        * and accumulate multiple clears to color and depth_stencil
 421        * buffers which the app or state-tracker might issue
 422        * separately.
 423        */
 424       set_scene_state( setup, SETUP_CLEARED, __FUNCTION__ );
 425
 426       setup->clear.flags |= flags;
 427
 428       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 429          setup->clear.zsmask |= zsmask;
 430          setup->clear.zsvalue =
 431             (setup->clear.zsvalue & ~zsmask) | (zsvalue & zsmask);
 432       }
 433
 434       if (flags & PIPE_CLEAR_COLOR) {
 435          memcpy(setup->clear.color.clear_color,
 436                 &color_arg,
 437                 sizeof setup->clear.color.clear_color);
 438       }
 439    }
 440
 441    return TRUE;
 442 }
 443
 444 void
 445 lp_setup_clear( struct lp_setup_context *setup,
 446                 const float *color,
 447                 double depth,
 448                 unsigned stencil,
 449                 unsigned flags )
 450 {
 451    if (!lp_setup_try_clear( setup, color, depth, stencil, flags )) {
 452       lp_setup_flush(setup, 0, NULL, __FUNCTION__);
 453
 454       if (!lp_setup_try_clear( setup, color, depth, stencil, flags ))
 455          assert(0);
 456    }
 457 }
 458
 459
 460
 461
 462
 463 void
 464 lp_setup_set_triangle_state( struct lp_setup_context *setup,
 465                              unsigned cull_mode,
 466                              boolean ccw_is_frontface,
 467                              boolean scissor,
 468                              boolean gl_rasterization_rules)
 469 {
 470    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 471
 472    setup->ccw_is_frontface = ccw_is_frontface;
 473    setup->cullmode = cull_mode;
 474    setup->triangle = first_triangle;
 475    setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f;
 476
 477    if (setup->scissor_test != scissor) {
 478       setup->dirty |= LP_SETUP_NEW_SCISSOR;
 479       setup->scissor_test = scissor;
 480    }
 481 }
 482
 483 void
 484 lp_setup_set_line_state( struct lp_setup_context *setup,
 485                          float line_width)
 486 {
 487    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 488
 489    setup->line_width = line_width;
 490 }
 491
 492 void
 493 lp_setup_set_point_state( struct lp_setup_context *setup,
 494                           float point_size,
 495                           boolean point_size_per_vertex,
 496                           uint sprite_coord_enable,
 497                           uint sprite_coord_origin)
 498 {
 499    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 500
 501    setup->point_size = point_size;
 502    setup->sprite_coord_enable = sprite_coord_enable;
 503    setup->sprite_coord_origin = sprite_coord_origin;
 504    setup->point_size_per_vertex = point_size_per_vertex;
 505 }
 506
 507 void
 508 lp_setup_set_fs_inputs( struct lp_setup_context *setup,
 509                         const struct lp_shader_input *input,
 510                         unsigned nr )
 511 {
 512    LP_DBG(DEBUG_SETUP, "%s %p %u\n", __FUNCTION__, (void *) input, nr);
 513
 514    memcpy( setup->fs.input, input, nr * sizeof input[0] );
 515    setup->fs.nr_inputs = nr;
 516 }
 517
 518 void
 519 lp_setup_set_fs_variant( struct lp_setup_context *setup,
 520                          struct lp_fragment_shader_variant *variant)
 521 {
 522    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__,
 523           variant);
 524    /* FIXME: reference count */
 525
 526    setup->fs.current.variant = variant;
 527    setup->dirty |= LP_SETUP_NEW_FS;
 528 }
 529
 530 void
 531 lp_setup_set_fs_constants(struct lp_setup_context *setup,
 532                           struct pipe_resource *buffer)
 533 {
 534    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) buffer);
 535
 536    pipe_resource_reference(&setup->constants.current, buffer);
 537
 538    setup->dirty |= LP_SETUP_NEW_CONSTANTS;
 539 }
 540
 541
 542 void
 543 lp_setup_set_alpha_ref_value( struct lp_setup_context *setup,
 544                               float alpha_ref_value )
 545 {
 546    LP_DBG(DEBUG_SETUP, "%s %f\n", __FUNCTION__, alpha_ref_value);
 547
 548    if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
 549       setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
 550       setup->dirty |= LP_SETUP_NEW_FS;
 551    }
 552 }
 553
 554 void
 555 lp_setup_set_stencil_ref_values( struct lp_setup_context *setup,
 556                                  const ubyte refs[2] )
 557 {
 558    LP_DBG(DEBUG_SETUP, "%s %d %d\n", __FUNCTION__, refs[0], refs[1]);
 559
 560    if (setup->fs.current.jit_context.stencil_ref_front != refs[0] ||
 561        setup->fs.current.jit_context.stencil_ref_back != refs[1]) {
 562       setup->fs.current.jit_context.stencil_ref_front = refs[0];
 563       setup->fs.current.jit_context.stencil_ref_back = refs[1];
 564       setup->dirty |= LP_SETUP_NEW_FS;
 565    }
 566 }
 567
 568 void
 569 lp_setup_set_blend_color( struct lp_setup_context *setup,
 570                           const struct pipe_blend_color *blend_color )
 571 {
 572    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 573
 574    assert(blend_color);
 575
 576    if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
 577       memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
 578       setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
 579    }
 580 }
 581
 582
 583 void
 584 lp_setup_set_scissor( struct lp_setup_context *setup,
 585                       const struct pipe_scissor_state *scissor )
 586 {
 587    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 588
 589    assert(scissor);
 590
 591    setup->scissor.x0 = scissor->minx;
 592    setup->scissor.x1 = scissor->maxx-1;
 593    setup->scissor.y0 = scissor->miny;
 594    setup->scissor.y1 = scissor->maxy-1;
 595    setup->dirty |= LP_SETUP_NEW_SCISSOR;
 596 }
 597
 598
 599 void
 600 lp_setup_set_flatshade_first( struct lp_setup_context *setup,
 601                               boolean flatshade_first )
 602 {
 603    setup->flatshade_first = flatshade_first;
 604 }
 605
 606
 607 void
 608 lp_setup_set_vertex_info( struct lp_setup_context *setup,
 609                           struct vertex_info *vertex_info )
 610 {
 611    /* XXX: just silently holding onto the pointer:
 612     */
 613    setup->vertex_info = vertex_info;
 614 }
 615
 616
 617 /**
 618  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 619  */
 620 void
 621 lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
 622                                     unsigned num,
 623                                     struct pipe_sampler_view **views)
 624 {
 625    unsigned i;
 626
 627    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 628
 629    assert(num <= PIPE_MAX_SAMPLERS);
 630
 631    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 632       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 633
 634       if (view) {
 635          struct pipe_resource *tex = view->texture;
 636          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 637          struct lp_jit_texture *jit_tex;
 638          jit_tex = &setup->fs.current.jit_context.textures[i];
 639          jit_tex->width = tex->width0;
 640          jit_tex->height = tex->height0;
 641          jit_tex->depth = tex->depth0;
 642          jit_tex->last_level = tex->last_level;
 643
 644          /* We're referencing the texture's internal data, so save a
 645           * reference to it.
 646           */
 647          pipe_resource_reference(&setup->fs.current_tex[i], tex);
 648
 649          if (!lp_tex->dt) {
 650             /* regular texture - setup array of mipmap level pointers */
 651             int j;
 652             for (j = 0; j <= tex->last_level; j++) {
 653                jit_tex->data[j] =
 654                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 655                                                  LP_TEX_LAYOUT_LINEAR);
 656                jit_tex->row_stride[j] = lp_tex->row_stride[j];
 657                jit_tex->img_stride[j] = lp_tex->img_stride[j];
 658
 659                if ((LP_PERF & PERF_TEX_MEM) ||
 660                    !jit_tex->data[j]) {
 661                   /* out of memory - use dummy tile memory */
 662                   jit_tex->data[j] = lp_dummy_tile;
 663                   jit_tex->width = TILE_SIZE/8;
 664                   jit_tex->height = TILE_SIZE/8;
 665                   jit_tex->depth = 1;
 666                   jit_tex->last_level = 0;
 667                   jit_tex->row_stride[j] = 0;
 668                   jit_tex->img_stride[j] = 0;
 669                }
 670             }
 671          }
 672          else {
 673             /* display target texture/surface */
 674             /*
 675              * XXX: Where should this be unmapped?
 676              */
 677             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 678             struct sw_winsys *winsys = screen->winsys;
 679             jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 680                                                          PIPE_TRANSFER_READ);
 681             jit_tex->row_stride[0] = lp_tex->row_stride[0];
 682             jit_tex->img_stride[0] = lp_tex->img_stride[0];
 683             assert(jit_tex->data[0]);
 684          }
 685       }
 686    }
 687
 688    setup->dirty |= LP_SETUP_NEW_FS;
 689 }
 690
 691
 692 /**
 693  * Called during state validation when LP_NEW_SAMPLER is set.
 694  */
 695 void
 696 lp_setup_set_fragment_sampler_state(struct lp_setup_context *setup,
 697                                     unsigned num,
 698                                     const struct pipe_sampler_state **samplers)
 699 {
 700    unsigned i;
 701
 702    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 703
 704    assert(num <= PIPE_MAX_SAMPLERS);
 705
 706    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 707       const struct pipe_sampler_state *sampler = i < num ? samplers[i] : NULL;
 708
 709       if (sampler) {
 710          struct lp_jit_texture *jit_tex;
 711          jit_tex = &setup->fs.current.jit_context.textures[i];
 712
 713          jit_tex->min_lod = sampler->min_lod;
 714          jit_tex->max_lod = sampler->max_lod;
 715          jit_tex->lod_bias = sampler->lod_bias;
 716          COPY_4V(jit_tex->border_color, sampler->border_color);
 717       }
 718    }
 719
 720    setup->dirty |= LP_SETUP_NEW_FS;
 721 }
 722
 723
 724 /**
 725  * Is the given texture referenced by any scene?
 726  * Note: we have to check all scenes including any scenes currently
 727  * being rendered and the current scene being built.
 728  */
 729 unsigned
 730 lp_setup_is_resource_referenced( const struct lp_setup_context *setup,
 731                                 const struct pipe_resource *texture )
 732 {
 733    unsigned i;
 734
 735    /* check the render targets */
 736    for (i = 0; i < setup->fb.nr_cbufs; i++) {
 737       if (setup->fb.cbufs[i]->texture == texture)
 738          return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 739    }
 740    if (setup->fb.zsbuf && setup->fb.zsbuf->texture == texture) {
 741       return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 742    }
 743
 744    /* check textures referenced by the scene */
 745    for (i = 0; i < Elements(setup->scenes); i++) {
 746       if (lp_scene_is_resource_referenced(setup->scenes[i], texture)) {
 747          return PIPE_REFERENCED_FOR_READ;
 748       }
 749    }
 750
 751    return PIPE_UNREFERENCED;
 752 }
 753
 754
 755 /**
 756  * Called by vbuf code when we're about to draw something.
 757  */
 758 static boolean
 759 try_update_scene_state( struct lp_setup_context *setup )
 760 {
 761    boolean new_scene = (setup->fs.stored == NULL);
 762    struct lp_scene *scene = setup->scene;
 763
 764    assert(scene);
 765
 766    if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
 767       uint8_t *stored;
 768       unsigned i, j;
 769
 770       stored = lp_scene_alloc_aligned(scene, 4 * 16, 16);
 771       if (!stored) {
 772          assert(!new_scene);
 773          return FALSE;
 774       }
 775
 776       /* smear each blend color component across 16 ubyte elements */
 777       for (i = 0; i < 4; ++i) {
 778          uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
 779          for (j = 0; j < 16; ++j)
 780             stored[i*16 + j] = c;
 781       }
 782
 783       setup->blend_color.stored = stored;
 784       setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
 785       setup->dirty |= LP_SETUP_NEW_FS;
 786    }
 787
 788    if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
 789       struct pipe_resource *buffer = setup->constants.current;
 790
 791       if(buffer) {
 792          unsigned current_size = buffer->width0;
 793          const void *current_data = llvmpipe_resource_data(buffer);
 794
 795          /* TODO: copy only the actually used constants? */
 796
 797          if(setup->constants.stored_size != current_size ||
 798             !setup->constants.stored_data ||
 799             memcmp(setup->constants.stored_data,
 800                    current_data,
 801                    current_size) != 0) {
 802             void *stored;
 803
 804             stored = lp_scene_alloc(scene, current_size);
 805             if (!stored) {
 806                assert(!new_scene);
 807                return FALSE;
 808             }
 809
 810             memcpy(stored,
 811                    current_data,
 812                    current_size);
 813             setup->constants.stored_size = current_size;
 814             setup->constants.stored_data = stored;
 815          }
 816       }
 817       else {
 818          setup->constants.stored_size = 0;
 819          setup->constants.stored_data = NULL;
 820       }
 821
 822       setup->fs.current.jit_context.constants = setup->constants.stored_data;
 823       setup->dirty |= LP_SETUP_NEW_FS;
 824    }
 825
 826
 827    if (setup->dirty & LP_SETUP_NEW_FS) {
 828       if (!setup->fs.stored ||
 829           memcmp(setup->fs.stored,
 830                  &setup->fs.current,
 831                  sizeof setup->fs.current) != 0)
 832       {
 833          struct lp_rast_state *stored;
 834          uint i;
 835
 836          /* The fs state that's been stored in the scene is different from
 837           * the new, current state.  So allocate a new lp_rast_state object
 838           * and append it to the bin's setup data buffer.
 839           */
 840          stored = (struct lp_rast_state *) lp_scene_alloc(scene, sizeof *stored);
 841          if (!stored) {
 842             assert(!new_scene);
 843             return FALSE;
 844          }
 845
 846          memcpy(stored,
 847                 &setup->fs.current,
 848                 sizeof setup->fs.current);
 849          setup->fs.stored = stored;
 850
 851          /* The scene now references the textures in the rasterization
 852           * state record.  Note that now.
 853           */
 854          for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 855             if (setup->fs.current_tex[i]) {
 856                if (!lp_scene_add_resource_reference(scene,
 857                                                     setup->fs.current_tex[i],
 858                                                     new_scene)) {
 859                   assert(!new_scene);
 860                   return FALSE;
 861                }
 862             }
 863          }
 864       }
 865    }
 866
 867    if (setup->dirty & LP_SETUP_NEW_SCISSOR) {
 868       setup->draw_region = setup->framebuffer;
 869       if (setup->scissor_test) {
 870          u_rect_possible_intersection(&setup->scissor,
 871                                       &setup->draw_region);
 872       }
 873    }
 874
 875    setup->dirty = 0;
 876
 877    assert(setup->fs.stored);
 878    return TRUE;
 879 }
 880
 881 void
 882 lp_setup_update_state( struct lp_setup_context *setup,
 883                        boolean update_scene )
 884 {
 885    /* Some of the 'draw' pipeline stages may have changed some driver state.
 886     * Make sure we've processed those state changes before anything else.
 887     *
 888     * XXX this is the only place where llvmpipe_context is used in the
 889     * setup code.  This may get refactored/changed...
 890     */
 891    {
 892       struct llvmpipe_context *lp = llvmpipe_context(setup->pipe);
 893       if (lp->dirty) {
 894          llvmpipe_update_derived(lp);
 895       }
 896
 897       /* Will probably need to move this somewhere else, just need
 898        * to know about vertex shader point size attribute.
 899        */
 900       setup->psize = lp->psize_slot;
 901
 902       assert(lp->dirty == 0);
 903    }
 904
 905    if (update_scene)
 906       set_scene_state( setup, SETUP_ACTIVE, __FUNCTION__ );
 907
 908    /* Only call into update_scene_state() if we already have a
 909     * scene:
 910     */
 911    if (update_scene && setup->scene) {
 912       assert(setup->state == SETUP_ACTIVE);
 913       if (!try_update_scene_state(setup)) {
 914          lp_setup_flush_and_restart(setup);
 915          if (!try_update_scene_state(setup))
 916             assert(0);
 917       }
 918    }
 919 }
 920
 921
 922
 923 /* Only caller is lp_setup_vbuf_destroy()
 924  */
 925 void
 926 lp_setup_destroy( struct lp_setup_context *setup )
 927 {
 928    uint i;
 929
 930    lp_setup_reset( setup );
 931
 932    util_unreference_framebuffer_state(&setup->fb);
 933
 934    for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 935       pipe_resource_reference(&setup->fs.current_tex[i], NULL);
 936    }
 937
 938    pipe_resource_reference(&setup->constants.current, NULL);
 939
 940    /* free the scenes in the 'empty' queue */
 941    for (i = 0; i < Elements(setup->scenes); i++) {
 942       struct lp_scene *scene = setup->scenes[i];
 943
 944       if (scene->fence)
 945          lp_fence_wait(scene->fence);
 946
 947       lp_scene_destroy(scene);
 948    }
 949
 950    FREE( setup );
 951 }
 952
 953
 954 /**
 955  * Create a new primitive tiling engine.  Plug it into the backend of
 956  * the draw module.  Currently also creates a rasterizer to use with
 957  * it.
 958  */
 959 struct lp_setup_context *
 960 lp_setup_create( struct pipe_context *pipe,
 961                  struct draw_context *draw )
 962 {
 963    struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
 964    struct lp_setup_context *setup = CALLOC_STRUCT(lp_setup_context);
 965    unsigned i;
 966
 967    if (!setup)
 968       return NULL;
 969
 970    lp_setup_init_vbuf(setup);
 971
 972    /* Used only in update_state():
 973     */
 974    setup->pipe = pipe;
 975
 976
 977    setup->num_threads = screen->num_threads;
 978    setup->vbuf = draw_vbuf_stage(draw, &setup->base);
 979    if (!setup->vbuf)
 980       goto fail;
 981
 982    draw_set_rasterize_stage(draw, setup->vbuf);
 983    draw_set_render(draw, &setup->base);
 984
 985    /* create some empty scenes */
 986    for (i = 0; i < MAX_SCENES; i++) {
 987       setup->scenes[i] = lp_scene_create( pipe );
 988    }
 989
 990    setup->triangle = first_triangle;
 991    setup->line     = first_line;
 992    setup->point    = first_point;
 993
 994    setup->dirty = ~0;
 995
 996    return setup;
 997
 998 fail:
 999    if (setup->vbuf)
1000       ;
1001
1002    FREE(setup);
1003    return NULL;
1004 }
1005
1006
1007 /**
1008  * Put a BeginQuery command into all bins.
1009  */
1010 void
1011 lp_setup_begin_query(struct lp_setup_context *setup,
1012                      struct llvmpipe_query *pq)
1013 {
1014    /* init the query to its beginning state */
1015    assert(setup->active_query == NULL);
1016
1017    if (setup->scene) {
1018       if (!lp_scene_bin_everywhere(setup->scene,
1019                                    LP_RAST_OP_BEGIN_QUERY,
1020                                    lp_rast_arg_query(pq))) {
1021
1022          lp_setup_flush_and_restart(setup);
1023
1024          if (!lp_scene_bin_everywhere(setup->scene,
1025                                       LP_RAST_OP_BEGIN_QUERY,
1026                                       lp_rast_arg_query(pq))) {
1027             assert(0);
1028             return;
1029          }
1030       }
1031    }
1032
1033    setup->active_query = pq;
1034 }
1035
1036
1037 /**
1038  * Put an EndQuery command into all bins.
1039  */
1040 void
1041 lp_setup_end_query(struct lp_setup_context *setup, struct llvmpipe_query *pq)
1042 {
1043    union lp_rast_cmd_arg dummy = { 0 };
1044
1045    assert(setup->active_query == pq);
1046    setup->active_query = NULL;
1047
1048    /* Setup will automatically re-issue any query which carried over a
1049     * scene boundary, and the rasterizer automatically "ends" queries
1050     * which are active at the end of a scene, so there is no need to
1051     * retry this commands on failure.
1052     */
1053    if (setup->scene) {
1054       /* pq->fence should be the fence of the *last* scene which
1055        * contributed to the query result.
1056        */
1057       lp_fence_reference(&pq->fence, setup->scene->fence);
1058
1059       if (!lp_scene_bin_everywhere(setup->scene,
1060                                    LP_RAST_OP_END_QUERY,
1061                                    dummy)) {
1062          lp_setup_flush(setup, 0, NULL, __FUNCTION__);
1063       }
1064    }
1065    else {
1066       lp_fence_reference(&pq->fence, setup->last_fence);
1067    }
1068 }
1069
1070
1071 void
1072 lp_setup_flush_and_restart(struct lp_setup_context *setup)
1073 {
1074    if (0) debug_printf("%s\n", __FUNCTION__);
1075
1076    assert(setup->state == SETUP_ACTIVE);
1077    set_scene_state(setup, SETUP_FLUSHED, __FUNCTION__);
1078    lp_setup_update_state(setup, TRUE);
1079 }
1080
1081