src/gallium/drivers/llvmpipe/lp_setup.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /**
  29  * Tiling engine.
  30  *
  31  * Builds per-tile display lists and executes them on calls to
  32  * lp_setup_flush().
  33  */
  34
  35 #include <limits.h>
  36
  37 #include "pipe/p_defines.h"
  38 #include "util/u_framebuffer.h"
  39 #include "util/u_inlines.h"
  40 #include "util/u_memory.h"
  41 #include "util/u_pack_color.h"
  42 #include "lp_context.h"
  43 #include "lp_memory.h"
  44 #include "lp_scene.h"
  45 #include "lp_texture.h"
  46 #include "lp_debug.h"
  47 #include "lp_fence.h"
  48 #include "lp_query.h"
  49 #include "lp_rast.h"
  50 #include "lp_setup_context.h"
  51 #include "lp_screen.h"
  52 #include "lp_state.h"
  53 #include "state_tracker/sw_winsys.h"
  54
  55 #include "draw/draw_context.h"
  56 #include "draw/draw_vbuf.h"
  57
  58
  59 static boolean set_scene_state( struct lp_setup_context *, enum setup_state,
  60                              const char *reason);
  61 static boolean try_update_scene_state( struct lp_setup_context *setup );
  62
  63
  64 static void
  65 lp_setup_get_empty_scene(struct lp_setup_context *setup)
  66 {
  67    assert(setup->scene == NULL);
  68
  69    setup->scene_idx++;
  70    setup->scene_idx %= Elements(setup->scenes);
  71
  72    setup->scene = setup->scenes[setup->scene_idx];
  73
  74    if (setup->scene->fence) {
  75       if (LP_DEBUG & DEBUG_SETUP)
  76          debug_printf("%s: wait for scene %d\n",
  77                       __FUNCTION__, setup->scene->fence->id);
  78
  79       lp_fence_wait(setup->scene->fence);
  80    }
  81
  82    lp_scene_begin_binning(setup->scene, &setup->fb);
  83
  84 }
  85
  86
  87 static void
  88 first_triangle( struct lp_setup_context *setup,
  89                 const float (*v0)[4],
  90                 const float (*v1)[4],
  91                 const float (*v2)[4])
  92 {
  93    assert(setup->state == SETUP_ACTIVE);
  94    lp_setup_choose_triangle( setup );
  95    setup->triangle( setup, v0, v1, v2 );
  96 }
  97
  98 static void
  99 first_line( struct lp_setup_context *setup,
 100             const float (*v0)[4],
 101             const float (*v1)[4])
 102 {
 103    assert(setup->state == SETUP_ACTIVE);
 104    lp_setup_choose_line( setup );
 105    setup->line( setup, v0, v1 );
 106 }
 107
 108 static void
 109 first_point( struct lp_setup_context *setup,
 110              const float (*v0)[4])
 111 {
 112    assert(setup->state == SETUP_ACTIVE);
 113    lp_setup_choose_point( setup );
 114    setup->point( setup, v0 );
 115 }
 116
 117 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 boolean
 171 begin_binning( struct lp_setup_context *setup )
 172 {
 173    struct lp_scene *scene = setup->scene;
 174    boolean need_zsload = FALSE;
 175    boolean ok;
 176    unsigned i, j;
 177
 178    assert(scene);
 179    assert(scene->fence == NULL);
 180
 181    /* Always create a fence:
 182     */
 183    scene->fence = lp_fence_create(MAX2(1, setup->num_threads));
 184    if (!scene->fence)
 185       return FALSE;
 186
 187    /* Initialize the bin flags and x/y coords:
 188     */
 189    for (i = 0; i < scene->tiles_x; i++) {
 190       for (j = 0; j < scene->tiles_y; j++) {
 191          scene->tile[i][j].x = i;
 192          scene->tile[i][j].y = j;
 193       }
 194    }
 195
 196    ok = try_update_scene_state(setup);
 197    if (!ok)
 198       return FALSE;
 199
 200    if (setup->fb.zsbuf &&
 201        ((setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
 202         util_format_is_depth_and_stencil(setup->fb.zsbuf->format))
 203       need_zsload = TRUE;
 204
 205    LP_DBG(DEBUG_SETUP, "%s color: %s depth: %s\n", __FUNCTION__,
 206           (setup->clear.flags & PIPE_CLEAR_COLOR) ? "clear": "load",
 207           need_zsload ? "clear": "load");
 208
 209    if (setup->fb.nr_cbufs) {
 210       if (setup->clear.flags & PIPE_CLEAR_COLOR) {
 211          ok = lp_scene_bin_everywhere( scene,
 212                                        LP_RAST_OP_CLEAR_COLOR,
 213                                        setup->clear.color );
 214          if (!ok)
 215             return FALSE;
 216       }
 217    }
 218
 219    if (setup->fb.zsbuf) {
 220       if (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) {
 221          if (!need_zsload)
 222             scene->has_depthstencil_clear = TRUE;
 223
 224          ok = lp_scene_bin_everywhere( scene,
 225                                        LP_RAST_OP_CLEAR_ZSTENCIL,
 226                                        lp_rast_arg_clearzs(
 227                                           setup->clear.zsvalue,
 228                                           setup->clear.zsmask));
 229          if (!ok)
 230             return FALSE;
 231       }
 232    }
 233
 234    if (setup->active_query) {
 235       ok = lp_scene_bin_everywhere( scene,
 236                                     LP_RAST_OP_BEGIN_QUERY,
 237                                     lp_rast_arg_query(setup->active_query) );
 238       if (!ok)
 239          return FALSE;
 240    }
 241
 242    setup->clear.flags = 0;
 243    setup->clear.zsmask = 0;
 244    setup->clear.zsvalue = 0;
 245
 246    LP_DBG(DEBUG_SETUP, "%s done\n", __FUNCTION__);
 247    return TRUE;
 248 }
 249
 250
 251 /* This basically bins and then flushes any outstanding full-screen
 252  * clears.
 253  *
 254  * TODO: fast path for fullscreen clears and no triangles.
 255  */
 256 static boolean
 257 execute_clears( struct lp_setup_context *setup )
 258 {
 259    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 260
 261    return begin_binning( setup );
 262 }
 263
 264 const char *states[] = {
 265    "FLUSHED",
 266    "EMPTY  ",
 267    "CLEARED",
 268    "ACTIVE "
 269 };
 270
 271
 272 static boolean
 273 set_scene_state( struct lp_setup_context *setup,
 274                  enum setup_state new_state,
 275                  const char *reason)
 276 {
 277    unsigned old_state = setup->state;
 278
 279    if (old_state == new_state)
 280       return TRUE;
 281
 282    if (LP_DEBUG & DEBUG_SCENE) {
 283       debug_printf("%s old %s new %s%s%s\n",
 284                    __FUNCTION__,
 285                    states[old_state],
 286                    states[new_state],
 287                    (new_state == SETUP_FLUSHED) ? ": " : "",
 288                    (new_state == SETUP_FLUSHED) ? reason : "");
 289
 290       if (new_state == SETUP_FLUSHED && setup->scene)
 291          lp_debug_draw_bins_by_cmd_length(setup->scene);
 292    }
 293
 294    /* wait for a free/empty scene
 295     */
 296    if (old_state == SETUP_FLUSHED)
 297       lp_setup_get_empty_scene(setup);
 298
 299    switch (new_state) {
 300    case SETUP_CLEARED:
 301       break;
 302
 303    case SETUP_ACTIVE:
 304       if (!begin_binning( setup ))
 305          goto fail;
 306       break;
 307
 308    case SETUP_FLUSHED:
 309       if (old_state == SETUP_CLEARED)
 310          if (!execute_clears( setup ))
 311             goto fail;
 312
 313       lp_setup_rasterize_scene( setup );
 314       assert(setup->scene == NULL);
 315       break;
 316
 317    default:
 318       assert(0 && "invalid setup state mode");
 319       goto fail;
 320    }
 321
 322    setup->state = new_state;
 323    return TRUE;
 324
 325 fail:
 326    if (setup->scene) {
 327       lp_scene_end_rasterization(setup->scene);
 328       setup->scene = NULL;
 329    }
 330
 331    setup->state = SETUP_FLUSHED;
 332    lp_setup_reset( setup );
 333    return FALSE;
 334 }
 335
 336
 337 /**
 338  * \param flags  bitmask of PIPE_FLUSH_x flags
 339  */
 340 void
 341 lp_setup_flush( struct lp_setup_context *setup,
 342                 unsigned flags,
 343                 struct pipe_fence_handle **fence,
 344                 const char *reason)
 345 {
 346    set_scene_state( setup, SETUP_FLUSHED, reason );
 347
 348    if (fence) {
 349       lp_fence_reference((struct lp_fence **)fence, setup->last_fence);
 350    }
 351 }
 352
 353
 354 void
 355 lp_setup_bind_framebuffer( struct lp_setup_context *setup,
 356                            const struct pipe_framebuffer_state *fb )
 357 {
 358    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 359
 360    /* Flush any old scene.
 361     */
 362    set_scene_state( setup, SETUP_FLUSHED, __FUNCTION__ );
 363
 364    /*
 365     * Ensure the old scene is not reused.
 366     */
 367    assert(!setup->scene);
 368
 369    /* Set new state.  This will be picked up later when we next need a
 370     * scene.
 371     */
 372    util_copy_framebuffer_state(&setup->fb, fb);
 373    setup->framebuffer.x0 = 0;
 374    setup->framebuffer.y0 = 0;
 375    setup->framebuffer.x1 = fb->width-1;
 376    setup->framebuffer.y1 = fb->height-1;
 377    setup->dirty |= LP_SETUP_NEW_SCISSOR;
 378 }
 379
 380
 381 static boolean
 382 lp_setup_try_clear( struct lp_setup_context *setup,
 383                     const float *color,
 384                     double depth,
 385                     unsigned stencil,
 386                     unsigned flags )
 387 {
 388    uint32_t zsmask = 0;
 389    uint32_t zsvalue = 0;
 390    union lp_rast_cmd_arg color_arg;
 391    unsigned i;
 392
 393    LP_DBG(DEBUG_SETUP, "%s state %d\n", __FUNCTION__, setup->state);
 394
 395    if (flags & PIPE_CLEAR_COLOR) {
 396       for (i = 0; i < 4; i++)
 397          color_arg.clear_color[i] = float_to_ubyte(color[i]);
 398    }
 399
 400    if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 401       uint32_t zmask = (flags & PIPE_CLEAR_DEPTH) ? ~0 : 0;
 402       uint32_t smask = (flags & PIPE_CLEAR_STENCIL) ? ~0 : 0;
 403
 404       zsvalue = util_pack_z_stencil(setup->fb.zsbuf->format,
 405                                     depth,
 406                                     stencil);
 407
 408
 409       zsmask = util_pack_mask_z_stencil(setup->fb.zsbuf->format,
 410                                         zmask,
 411                                         smask);
 412
 413       zsvalue &= zsmask;
 414    }
 415
 416    if (setup->state == SETUP_ACTIVE) {
 417       struct lp_scene *scene = setup->scene;
 418
 419       /* Add the clear to existing scene.  In the unusual case where
 420        * both color and depth-stencil are being cleared when there's
 421        * already been some rendering, we could discard the currently
 422        * binned scene and start again, but I don't see that as being
 423        * a common usage.
 424        */
 425       if (flags & PIPE_CLEAR_COLOR) {
 426          if (!lp_scene_bin_everywhere( scene,
 427                                        LP_RAST_OP_CLEAR_COLOR,
 428                                        color_arg ))
 429             return FALSE;
 430       }
 431
 432       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 433          if (!lp_scene_bin_everywhere( scene,
 434                                        LP_RAST_OP_CLEAR_ZSTENCIL,
 435                                        lp_rast_arg_clearzs(zsvalue, zsmask) ))
 436             return FALSE;
 437       }
 438    }
 439    else {
 440       /* Put ourselves into the 'pre-clear' state, specifically to try
 441        * and accumulate multiple clears to color and depth_stencil
 442        * buffers which the app or state-tracker might issue
 443        * separately.
 444        */
 445       set_scene_state( setup, SETUP_CLEARED, __FUNCTION__ );
 446
 447       setup->clear.flags |= flags;
 448
 449       if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 450          setup->clear.zsmask |= zsmask;
 451          setup->clear.zsvalue =
 452             (setup->clear.zsvalue & ~zsmask) | (zsvalue & zsmask);
 453       }
 454
 455       if (flags & PIPE_CLEAR_COLOR) {
 456          memcpy(setup->clear.color.clear_color,
 457                 &color_arg,
 458                 sizeof setup->clear.color.clear_color);
 459       }
 460    }
 461
 462    return TRUE;
 463 }
 464
 465 void
 466 lp_setup_clear( struct lp_setup_context *setup,
 467                 const float *color,
 468                 double depth,
 469                 unsigned stencil,
 470                 unsigned flags )
 471 {
 472    if (!lp_setup_try_clear( setup, color, depth, stencil, flags )) {
 473       lp_setup_flush(setup, 0, NULL, __FUNCTION__);
 474
 475       if (!lp_setup_try_clear( setup, color, depth, stencil, flags ))
 476          assert(0);
 477    }
 478 }
 479
 480
 481
 482
 483
 484 void
 485 lp_setup_set_triangle_state( struct lp_setup_context *setup,
 486                              unsigned cull_mode,
 487                              boolean ccw_is_frontface,
 488                              boolean scissor,
 489                              boolean gl_rasterization_rules)
 490 {
 491    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 492
 493    setup->ccw_is_frontface = ccw_is_frontface;
 494    setup->cullmode = cull_mode;
 495    setup->triangle = first_triangle;
 496    setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f;
 497
 498    if (setup->scissor_test != scissor) {
 499       setup->dirty |= LP_SETUP_NEW_SCISSOR;
 500       setup->scissor_test = scissor;
 501    }
 502 }
 503
 504 void
 505 lp_setup_set_line_state( struct lp_setup_context *setup,
 506                          float line_width)
 507 {
 508    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 509
 510    setup->line_width = line_width;
 511 }
 512
 513 void
 514 lp_setup_set_point_state( struct lp_setup_context *setup,
 515                           float point_size,
 516                           boolean point_size_per_vertex,
 517                           uint sprite_coord_enable,
 518                           uint sprite_coord_origin)
 519 {
 520    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 521
 522    setup->point_size = point_size;
 523    setup->sprite_coord_enable = sprite_coord_enable;
 524    setup->sprite_coord_origin = sprite_coord_origin;
 525    setup->point_size_per_vertex = point_size_per_vertex;
 526 }
 527
 528 void
 529 lp_setup_set_setup_variant( struct lp_setup_context *setup,
 530                             const struct lp_setup_variant *variant)
 531 {
 532    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 533
 534    setup->setup.variant = variant;
 535 }
 536
 537 void
 538 lp_setup_set_fs_variant( struct lp_setup_context *setup,
 539                          struct lp_fragment_shader_variant *variant)
 540 {
 541    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__,
 542           variant);
 543    /* FIXME: reference count */
 544
 545    setup->fs.current.variant = variant;
 546    setup->dirty |= LP_SETUP_NEW_FS;
 547 }
 548
 549 void
 550 lp_setup_set_fs_constants(struct lp_setup_context *setup,
 551                           struct pipe_resource *buffer)
 552 {
 553    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) buffer);
 554
 555    pipe_resource_reference(&setup->constants.current, buffer);
 556
 557    setup->dirty |= LP_SETUP_NEW_CONSTANTS;
 558 }
 559
 560
 561 void
 562 lp_setup_set_alpha_ref_value( struct lp_setup_context *setup,
 563                               float alpha_ref_value )
 564 {
 565    LP_DBG(DEBUG_SETUP, "%s %f\n", __FUNCTION__, alpha_ref_value);
 566
 567    if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
 568       setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
 569       setup->dirty |= LP_SETUP_NEW_FS;
 570    }
 571 }
 572
 573 void
 574 lp_setup_set_stencil_ref_values( struct lp_setup_context *setup,
 575                                  const ubyte refs[2] )
 576 {
 577    LP_DBG(DEBUG_SETUP, "%s %d %d\n", __FUNCTION__, refs[0], refs[1]);
 578
 579    if (setup->fs.current.jit_context.stencil_ref_front != refs[0] ||
 580        setup->fs.current.jit_context.stencil_ref_back != refs[1]) {
 581       setup->fs.current.jit_context.stencil_ref_front = refs[0];
 582       setup->fs.current.jit_context.stencil_ref_back = refs[1];
 583       setup->dirty |= LP_SETUP_NEW_FS;
 584    }
 585 }
 586
 587 void
 588 lp_setup_set_blend_color( struct lp_setup_context *setup,
 589                           const struct pipe_blend_color *blend_color )
 590 {
 591    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 592
 593    assert(blend_color);
 594
 595    if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
 596       memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
 597       setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
 598    }
 599 }
 600
 601
 602 void
 603 lp_setup_set_scissor( struct lp_setup_context *setup,
 604                       const struct pipe_scissor_state *scissor )
 605 {
 606    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 607
 608    assert(scissor);
 609
 610    setup->scissor.x0 = scissor->minx;
 611    setup->scissor.x1 = scissor->maxx-1;
 612    setup->scissor.y0 = scissor->miny;
 613    setup->scissor.y1 = scissor->maxy-1;
 614    setup->dirty |= LP_SETUP_NEW_SCISSOR;
 615 }
 616
 617
 618 void
 619 lp_setup_set_flatshade_first( struct lp_setup_context *setup,
 620                               boolean flatshade_first )
 621 {
 622    setup->flatshade_first = flatshade_first;
 623 }
 624
 625
 626 void
 627 lp_setup_set_vertex_info( struct lp_setup_context *setup,
 628                           struct vertex_info *vertex_info )
 629 {
 630    /* XXX: just silently holding onto the pointer:
 631     */
 632    setup->vertex_info = vertex_info;
 633 }
 634
 635
 636 /**
 637  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 638  */
 639 void
 640 lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
 641                                     unsigned num,
 642                                     struct pipe_sampler_view **views)
 643 {
 644    unsigned i;
 645
 646    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 647
 648    assert(num <= PIPE_MAX_SAMPLERS);
 649
 650    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 651       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 652
 653       if (view) {
 654          struct pipe_resource *tex = view->texture;
 655          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 656          struct lp_jit_texture *jit_tex;
 657          jit_tex = &setup->fs.current.jit_context.textures[i];
 658          jit_tex->width = tex->width0;
 659          jit_tex->height = tex->height0;
 660          jit_tex->depth = tex->depth0;
 661          jit_tex->last_level = tex->last_level;
 662
 663          /* We're referencing the texture's internal data, so save a
 664           * reference to it.
 665           */
 666          pipe_resource_reference(&setup->fs.current_tex[i], tex);
 667
 668          if (!lp_tex->dt) {
 669             /* regular texture - setup array of mipmap level pointers */
 670             int j;
 671             for (j = 0; j <= tex->last_level; j++) {
 672                jit_tex->data[j] =
 673                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 674                                                  LP_TEX_LAYOUT_LINEAR);
 675                jit_tex->row_stride[j] = lp_tex->row_stride[j];
 676                jit_tex->img_stride[j] = lp_tex->img_stride[j];
 677
 678                if ((LP_PERF & PERF_TEX_MEM) ||
 679                    !jit_tex->data[j]) {
 680                   /* out of memory - use dummy tile memory */
 681                   jit_tex->data[j] = lp_dummy_tile;
 682                   jit_tex->width = TILE_SIZE/8;
 683                   jit_tex->height = TILE_SIZE/8;
 684                   jit_tex->depth = 1;
 685                   jit_tex->last_level = 0;
 686                   jit_tex->row_stride[j] = 0;
 687                   jit_tex->img_stride[j] = 0;
 688                }
 689             }
 690          }
 691          else {
 692             /* display target texture/surface */
 693             /*
 694              * XXX: Where should this be unmapped?
 695              */
 696             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 697             struct sw_winsys *winsys = screen->winsys;
 698             jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 699                                                          PIPE_TRANSFER_READ);
 700             jit_tex->row_stride[0] = lp_tex->row_stride[0];
 701             jit_tex->img_stride[0] = lp_tex->img_stride[0];
 702             assert(jit_tex->data[0]);
 703          }
 704       }
 705    }
 706
 707    setup->dirty |= LP_SETUP_NEW_FS;
 708 }
 709
 710
 711 /**
 712  * Called during state validation when LP_NEW_SAMPLER is set.
 713  */
 714 void
 715 lp_setup_set_fragment_sampler_state(struct lp_setup_context *setup,
 716                                     unsigned num,
 717                                     const struct pipe_sampler_state **samplers)
 718 {
 719    unsigned i;
 720
 721    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 722
 723    assert(num <= PIPE_MAX_SAMPLERS);
 724
 725    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 726       const struct pipe_sampler_state *sampler = i < num ? samplers[i] : NULL;
 727
 728       if (sampler) {
 729          struct lp_jit_texture *jit_tex;
 730          jit_tex = &setup->fs.current.jit_context.textures[i];
 731
 732          jit_tex->min_lod = sampler->min_lod;
 733          jit_tex->max_lod = sampler->max_lod;
 734          jit_tex->lod_bias = sampler->lod_bias;
 735          COPY_4V(jit_tex->border_color, sampler->border_color);
 736       }
 737    }
 738
 739    setup->dirty |= LP_SETUP_NEW_FS;
 740 }
 741
 742
 743 /**
 744  * Is the given texture referenced by any scene?
 745  * Note: we have to check all scenes including any scenes currently
 746  * being rendered and the current scene being built.
 747  */
 748 unsigned
 749 lp_setup_is_resource_referenced( const struct lp_setup_context *setup,
 750                                 const struct pipe_resource *texture )
 751 {
 752    unsigned i;
 753
 754    /* check the render targets */
 755    for (i = 0; i < setup->fb.nr_cbufs; i++) {
 756       if (setup->fb.cbufs[i]->texture == texture)
 757          return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 758    }
 759    if (setup->fb.zsbuf && setup->fb.zsbuf->texture == texture) {
 760       return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 761    }
 762
 763    /* check textures referenced by the scene */
 764    for (i = 0; i < Elements(setup->scenes); i++) {
 765       if (lp_scene_is_resource_referenced(setup->scenes[i], texture)) {
 766          return PIPE_REFERENCED_FOR_READ;
 767       }
 768    }
 769
 770    return PIPE_UNREFERENCED;
 771 }
 772
 773
 774 /**
 775  * Called by vbuf code when we're about to draw something.
 776  */
 777 static boolean
 778 try_update_scene_state( struct lp_setup_context *setup )
 779 {
 780    boolean new_scene = (setup->fs.stored == NULL);
 781    struct lp_scene *scene = setup->scene;
 782
 783    assert(scene);
 784
 785    if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
 786       uint8_t *stored;
 787       unsigned i, j;
 788
 789       stored = lp_scene_alloc_aligned(scene, 4 * 16, 16);
 790       if (!stored) {
 791          assert(!new_scene);
 792          return FALSE;
 793       }
 794
 795       /* smear each blend color component across 16 ubyte elements */
 796       for (i = 0; i < 4; ++i) {
 797          uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
 798          for (j = 0; j < 16; ++j)
 799             stored[i*16 + j] = c;
 800       }
 801
 802       setup->blend_color.stored = stored;
 803       setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
 804       setup->dirty |= LP_SETUP_NEW_FS;
 805    }
 806
 807    if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
 808       struct pipe_resource *buffer = setup->constants.current;
 809
 810       if(buffer) {
 811          unsigned current_size = buffer->width0;
 812          const void *current_data = llvmpipe_resource_data(buffer);
 813
 814          /* TODO: copy only the actually used constants? */
 815
 816          if(setup->constants.stored_size != current_size ||
 817             !setup->constants.stored_data ||
 818             memcmp(setup->constants.stored_data,
 819                    current_data,
 820                    current_size) != 0) {
 821             void *stored;
 822
 823             stored = lp_scene_alloc(scene, current_size);
 824             if (!stored) {
 825                assert(!new_scene);
 826                return FALSE;
 827             }
 828
 829             memcpy(stored,
 830                    current_data,
 831                    current_size);
 832             setup->constants.stored_size = current_size;
 833             setup->constants.stored_data = stored;
 834          }
 835       }
 836       else {
 837          setup->constants.stored_size = 0;
 838          setup->constants.stored_data = NULL;
 839       }
 840
 841       setup->fs.current.jit_context.constants = setup->constants.stored_data;
 842       setup->dirty |= LP_SETUP_NEW_FS;
 843    }
 844
 845
 846    if (setup->dirty & LP_SETUP_NEW_FS) {
 847       if (!setup->fs.stored ||
 848           memcmp(setup->fs.stored,
 849                  &setup->fs.current,
 850                  sizeof setup->fs.current) != 0)
 851       {
 852          struct lp_rast_state *stored;
 853          uint i;
 854
 855          /* The fs state that's been stored in the scene is different from
 856           * the new, current state.  So allocate a new lp_rast_state object
 857           * and append it to the bin's setup data buffer.
 858           */
 859          stored = (struct lp_rast_state *) lp_scene_alloc(scene, sizeof *stored);
 860          if (!stored) {
 861             assert(!new_scene);
 862             return FALSE;
 863          }
 864
 865          memcpy(stored,
 866                 &setup->fs.current,
 867                 sizeof setup->fs.current);
 868          setup->fs.stored = stored;
 869
 870          /* The scene now references the textures in the rasterization
 871           * state record.  Note that now.
 872           */
 873          for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 874             if (setup->fs.current_tex[i]) {
 875                if (!lp_scene_add_resource_reference(scene,
 876                                                     setup->fs.current_tex[i],
 877                                                     new_scene)) {
 878                   assert(!new_scene);
 879                   return FALSE;
 880                }
 881             }
 882          }
 883       }
 884    }
 885
 886    if (setup->dirty & LP_SETUP_NEW_SCISSOR) {
 887       setup->draw_region = setup->framebuffer;
 888       if (setup->scissor_test) {
 889          u_rect_possible_intersection(&setup->scissor,
 890                                       &setup->draw_region);
 891       }
 892    }
 893
 894    setup->dirty = 0;
 895
 896    assert(setup->fs.stored);
 897    return TRUE;
 898 }
 899
 900 boolean
 901 lp_setup_update_state( struct lp_setup_context *setup,
 902                        boolean update_scene )
 903 {
 904    /* Some of the 'draw' pipeline stages may have changed some driver state.
 905     * Make sure we've processed those state changes before anything else.
 906     *
 907     * XXX this is the only place where llvmpipe_context is used in the
 908     * setup code.  This may get refactored/changed...
 909     */
 910    {
 911       struct llvmpipe_context *lp = llvmpipe_context(setup->pipe);
 912       if (lp->dirty) {
 913          llvmpipe_update_derived(lp);
 914       }
 915
 916       /* Will probably need to move this somewhere else, just need
 917        * to know about vertex shader point size attribute.
 918        */
 919       setup->psize = lp->psize_slot;
 920
 921       assert(lp->dirty == 0);
 922
 923       assert(lp->setup_variant.key.size ==
 924              setup->setup.variant->key.size);
 925
 926       assert(memcmp(&lp->setup_variant.key,
 927                     &setup->setup.variant->key,
 928                     setup->setup.variant->key.size) == 0);
 929    }
 930
 931    if (update_scene) {
 932       if (!set_scene_state( setup, SETUP_ACTIVE, __FUNCTION__ ))
 933          return FALSE;
 934    }
 935
 936    /* Only call into update_scene_state() if we already have a
 937     * scene:
 938     */
 939    if (update_scene && setup->scene) {
 940       assert(setup->state == SETUP_ACTIVE);
 941
 942       if (try_update_scene_state(setup))
 943          return TRUE;
 944
 945       /* Update failed, try to restart the scene.
 946        *
 947        * Cannot call lp_setup_flush_and_restart() directly here
 948        * because of potential recursion.
 949        */
 950       if (!set_scene_state(setup, SETUP_FLUSHED, __FUNCTION__))
 951          return FALSE;
 952
 953       if (!set_scene_state(setup, SETUP_ACTIVE, __FUNCTION__))
 954          return FALSE;
 955
 956       if (!setup->scene)
 957          return FALSE;
 958
 959       return try_update_scene_state(setup);
 960    }
 961
 962    return TRUE;
 963 }
 964
 965
 966
 967 /* Only caller is lp_setup_vbuf_destroy()
 968  */
 969 void
 970 lp_setup_destroy( struct lp_setup_context *setup )
 971 {
 972    uint i;
 973
 974    lp_setup_reset( setup );
 975
 976    util_unreference_framebuffer_state(&setup->fb);
 977
 978    for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 979       pipe_resource_reference(&setup->fs.current_tex[i], NULL);
 980    }
 981
 982    pipe_resource_reference(&setup->constants.current, NULL);
 983
 984    /* free the scenes in the 'empty' queue */
 985    for (i = 0; i < Elements(setup->scenes); i++) {
 986       struct lp_scene *scene = setup->scenes[i];
 987
 988       if (scene->fence)
 989          lp_fence_wait(scene->fence);
 990
 991       lp_scene_destroy(scene);
 992    }
 993
 994    FREE( setup );
 995 }
 996
 997
 998 /**
 999  * Create a new primitive tiling engine.  Plug it into the backend of
1000  * the draw module.  Currently also creates a rasterizer to use with
1001  * it.
1002  */
1003 struct lp_setup_context *
1004 lp_setup_create( struct pipe_context *pipe,
1005                  struct draw_context *draw )
1006 {
1007    struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
1008    struct lp_setup_context *setup = CALLOC_STRUCT(lp_setup_context);
1009    unsigned i;
1010
1011    if (!setup)
1012       return NULL;
1013
1014    lp_setup_init_vbuf(setup);
1015
1016    /* Used only in update_state():
1017     */
1018    setup->pipe = pipe;
1019
1020
1021    setup->num_threads = screen->num_threads;
1022    setup->vbuf = draw_vbuf_stage(draw, &setup->base);
1023    if (!setup->vbuf)
1024       goto fail;
1025
1026    draw_set_rasterize_stage(draw, setup->vbuf);
1027    draw_set_render(draw, &setup->base);
1028
1029    /* create some empty scenes */
1030    for (i = 0; i < MAX_SCENES; i++) {
1031       setup->scenes[i] = lp_scene_create( pipe );
1032    }
1033
1034    setup->triangle = first_triangle;
1035    setup->line     = first_line;
1036    setup->point    = first_point;
1037
1038    setup->dirty = ~0;
1039
1040    return setup;
1041
1042 fail:
1043    if (setup->vbuf)
1044       ;
1045
1046    FREE(setup);
1047    return NULL;
1048 }
1049
1050
1051 /**
1052  * Put a BeginQuery command into all bins.
1053  */
1054 void
1055 lp_setup_begin_query(struct lp_setup_context *setup,
1056                      struct llvmpipe_query *pq)
1057 {
1058    /* init the query to its beginning state */
1059    assert(setup->active_query == NULL);
1060
1061    if (setup->scene) {
1062       if (!lp_scene_bin_everywhere(setup->scene,
1063                                    LP_RAST_OP_BEGIN_QUERY,
1064                                    lp_rast_arg_query(pq))) {
1065
1066          if (!lp_setup_flush_and_restart(setup))
1067             return;
1068
1069          if (!lp_scene_bin_everywhere(setup->scene,
1070                                       LP_RAST_OP_BEGIN_QUERY,
1071                                       lp_rast_arg_query(pq))) {
1072             return;
1073          }
1074       }
1075    }
1076
1077    setup->active_query = pq;
1078 }
1079
1080
1081 /**
1082  * Put an EndQuery command into all bins.
1083  */
1084 void
1085 lp_setup_end_query(struct lp_setup_context *setup, struct llvmpipe_query *pq)
1086 {
1087    union lp_rast_cmd_arg dummy = { 0 };
1088
1089    assert(setup->active_query == pq);
1090    setup->active_query = NULL;
1091
1092    /* Setup will automatically re-issue any query which carried over a
1093     * scene boundary, and the rasterizer automatically "ends" queries
1094     * which are active at the end of a scene, so there is no need to
1095     * retry this commands on failure.
1096     */
1097    if (setup->scene) {
1098       /* pq->fence should be the fence of the *last* scene which
1099        * contributed to the query result.
1100        */
1101       lp_fence_reference(&pq->fence, setup->scene->fence);
1102
1103       if (!lp_scene_bin_everywhere(setup->scene,
1104                                    LP_RAST_OP_END_QUERY,
1105                                    dummy)) {
1106          lp_setup_flush(setup, 0, NULL, __FUNCTION__);
1107       }
1108    }
1109    else {
1110       lp_fence_reference(&pq->fence, setup->last_fence);
1111    }
1112 }
1113
1114
1115 boolean
1116 lp_setup_flush_and_restart(struct lp_setup_context *setup)
1117 {
1118    if (0) debug_printf("%s\n", __FUNCTION__);
1119
1120    assert(setup->state == SETUP_ACTIVE);
1121
1122    if (!set_scene_state(setup, SETUP_FLUSHED, __FUNCTION__))
1123       return FALSE;
1124
1125    if (!lp_setup_update_state(setup, TRUE))
1126       return FALSE;
1127
1128    return TRUE;
1129 }
1130
1131