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