src/gallium/drivers/panfrost/pan_job.c

   1 /*
   2  * Copyright (C) 2019 Alyssa Rosenzweig
   3  * Copyright (C) 2014-2017 Broadcom
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  */
  25
  26 #include <assert.h>
  27
  28 #include "drm-uapi/panfrost_drm.h"
  29
  30 #include "pan_bo.h"
  31 #include "pan_context.h"
  32 #include "util/hash_table.h"
  33 #include "util/ralloc.h"
  34 #include "util/u_format.h"
  35 #include "util/u_pack_color.h"
  36 #include "pan_util.h"
  37 #include "pandecode/decode.h"
  38
  39 static struct panfrost_batch *
  40 panfrost_create_batch(struct panfrost_context *ctx,
  41                       const struct pipe_framebuffer_state *key)
  42 {
  43         struct panfrost_batch *batch = rzalloc(ctx, struct panfrost_batch);
  44
  45         batch->ctx = ctx;
  46
  47         batch->bos = _mesa_set_create(batch,
  48                                       _mesa_hash_pointer,
  49                                       _mesa_key_pointer_equal);
  50
  51         batch->minx = batch->miny = ~0;
  52         batch->maxx = batch->maxy = 0;
  53         batch->transient_offset = 0;
  54
  55         util_dynarray_init(&batch->headers, batch);
  56         util_dynarray_init(&batch->gpu_headers, batch);
  57         util_copy_framebuffer_state(&batch->key, key);
  58
  59         return batch;
  60 }
  61
  62 static void
  63 panfrost_free_batch(struct panfrost_batch *batch)
  64 {
  65         if (!batch)
  66                 return;
  67
  68         struct panfrost_context *ctx = batch->ctx;
  69
  70         set_foreach(batch->bos, entry) {
  71                 struct panfrost_bo *bo = (struct panfrost_bo *)entry->key;
  72                 panfrost_bo_unreference(bo);
  73         }
  74
  75         _mesa_hash_table_remove_key(ctx->batches, &batch->key);
  76
  77         if (ctx->batch == batch)
  78                 ctx->batch = NULL;
  79
  80         util_unreference_framebuffer_state(&batch->key);
  81         ralloc_free(batch);
  82 }
  83
  84 static struct panfrost_batch *
  85 panfrost_get_batch(struct panfrost_context *ctx,
  86                    const struct pipe_framebuffer_state *key)
  87 {
  88         /* Lookup the job first */
  89         struct hash_entry *entry = _mesa_hash_table_search(ctx->batches, key);
  90
  91         if (entry)
  92                 return entry->data;
  93
  94         /* Otherwise, let's create a job */
  95
  96         struct panfrost_batch *batch = panfrost_create_batch(ctx, key);
  97
  98         /* Save the created job */
  99         _mesa_hash_table_insert(ctx->batches, &batch->key, batch);
 100
 101         return batch;
 102 }
 103
 104 /* Get the job corresponding to the FBO we're currently rendering into */
 105
 106 struct panfrost_batch *
 107 panfrost_get_batch_for_fbo(struct panfrost_context *ctx)
 108 {
 109         /* If we're wallpapering, we special case to workaround
 110          * u_blitter abuse */
 111
 112         if (ctx->wallpaper_batch)
 113                 return ctx->wallpaper_batch;
 114
 115         /* If we already began rendering, use that */
 116
 117         if (ctx->batch) {
 118                 assert(util_framebuffer_state_equal(&ctx->batch->key,
 119                                                     &ctx->pipe_framebuffer));
 120                 return ctx->batch;
 121         }
 122
 123         /* If not, look up the job */
 124         struct panfrost_batch *batch = panfrost_get_batch(ctx,
 125                                                           &ctx->pipe_framebuffer);
 126
 127         /* Set this job as the current FBO job. Will be reset when updating the
 128          * FB state and when submitting or releasing a job.
 129          */
 130         ctx->batch = batch;
 131         return batch;
 132 }
 133
 134 void
 135 panfrost_batch_add_bo(struct panfrost_batch *batch, struct panfrost_bo *bo,
 136                       uint32_t flags)
 137 {
 138         if (!bo)
 139                 return;
 140
 141         if (_mesa_set_search(batch->bos, bo))
 142                 return;
 143
 144         panfrost_bo_reference(bo);
 145         _mesa_set_add(batch->bos, bo);
 146 }
 147
 148 void panfrost_batch_add_fbo_bos(struct panfrost_batch *batch)
 149 {
 150         uint32_t flags = PAN_BO_ACCESS_SHARED | PAN_BO_ACCESS_WRITE |
 151                          PAN_BO_ACCESS_VERTEX_TILER |
 152                          PAN_BO_ACCESS_FRAGMENT;
 153
 154         for (unsigned i = 0; i < batch->key.nr_cbufs; ++i) {
 155                 struct panfrost_resource *rsrc = pan_resource(batch->key.cbufs[i]->texture);
 156                 panfrost_batch_add_bo(batch, rsrc->bo, flags);
 157         }
 158
 159         if (batch->key.zsbuf) {
 160                 struct panfrost_resource *rsrc = pan_resource(batch->key.zsbuf->texture);
 161                 panfrost_batch_add_bo(batch, rsrc->bo, flags);
 162         }
 163 }
 164
 165 struct panfrost_bo *
 166 panfrost_batch_create_bo(struct panfrost_batch *batch, size_t size,
 167                          uint32_t create_flags, uint32_t access_flags)
 168 {
 169         struct panfrost_bo *bo;
 170
 171         bo = panfrost_bo_create(pan_screen(batch->ctx->base.screen), size,
 172                                 create_flags);
 173         panfrost_batch_add_bo(batch, bo, access_flags);
 174
 175         /* panfrost_batch_add_bo() has retained a reference and
 176          * panfrost_bo_create() initialize the refcnt to 1, so let's
 177          * unreference the BO here so it gets released when the batch is
 178          * destroyed (unless it's retained by someone else in the meantime).
 179          */
 180         panfrost_bo_unreference(bo);
 181         return bo;
 182 }
 183
 184 /* Returns the polygon list's GPU address if available, or otherwise allocates
 185  * the polygon list.  It's perfectly fast to use allocate/free BO directly,
 186  * since we'll hit the BO cache and this is one-per-batch anyway. */
 187
 188 mali_ptr
 189 panfrost_batch_get_polygon_list(struct panfrost_batch *batch, unsigned size)
 190 {
 191         if (batch->polygon_list) {
 192                 assert(batch->polygon_list->size >= size);
 193         } else {
 194                 /* Create the BO as invisible, as there's no reason to map */
 195
 196                 batch->polygon_list = panfrost_batch_create_bo(batch, size,
 197                                                                PAN_BO_INVISIBLE,
 198                                                                PAN_BO_ACCESS_PRIVATE |
 199                                                                PAN_BO_ACCESS_RW |
 200                                                                PAN_BO_ACCESS_VERTEX_TILER |
 201                                                                PAN_BO_ACCESS_FRAGMENT);
 202         }
 203
 204         return batch->polygon_list->gpu;
 205 }
 206
 207 struct panfrost_bo *
 208 panfrost_batch_get_scratchpad(struct panfrost_batch *batch)
 209 {
 210         if (batch->scratchpad)
 211                 return batch->scratchpad;
 212
 213         batch->scratchpad = panfrost_batch_create_bo(batch, 64 * 4 * 4096,
 214                                                      PAN_BO_INVISIBLE,
 215                                                      PAN_BO_ACCESS_PRIVATE |
 216                                                      PAN_BO_ACCESS_RW |
 217                                                      PAN_BO_ACCESS_VERTEX_TILER |
 218                                                      PAN_BO_ACCESS_FRAGMENT);
 219         assert(batch->scratchpad);
 220         return batch->scratchpad;
 221 }
 222
 223 struct panfrost_bo *
 224 panfrost_batch_get_tiler_heap(struct panfrost_batch *batch)
 225 {
 226         if (batch->tiler_heap)
 227                 return batch->tiler_heap;
 228
 229         batch->tiler_heap = panfrost_batch_create_bo(batch, 4096 * 4096,
 230                                                      PAN_BO_INVISIBLE |
 231                                                      PAN_BO_GROWABLE,
 232                                                      PAN_BO_ACCESS_PRIVATE |
 233                                                      PAN_BO_ACCESS_RW |
 234                                                      PAN_BO_ACCESS_VERTEX_TILER |
 235                                                      PAN_BO_ACCESS_FRAGMENT);
 236         assert(batch->tiler_heap);
 237         return batch->tiler_heap;
 238 }
 239
 240 struct panfrost_bo *
 241 panfrost_batch_get_tiler_dummy(struct panfrost_batch *batch)
 242 {
 243         if (batch->tiler_dummy)
 244                 return batch->tiler_dummy;
 245
 246         batch->tiler_dummy = panfrost_batch_create_bo(batch, 4096,
 247                                                       PAN_BO_INVISIBLE,
 248                                                       PAN_BO_ACCESS_PRIVATE |
 249                                                       PAN_BO_ACCESS_RW |
 250                                                       PAN_BO_ACCESS_VERTEX_TILER |
 251                                                       PAN_BO_ACCESS_FRAGMENT);
 252         assert(batch->tiler_dummy);
 253         return batch->tiler_dummy;
 254 }
 255
 256 static void
 257 panfrost_batch_draw_wallpaper(struct panfrost_batch *batch)
 258 {
 259         /* Nothing to reload? TODO: MRT wallpapers */
 260         if (batch->key.cbufs[0] == NULL)
 261                 return;
 262
 263         /* Check if the buffer has any content on it worth preserving */
 264
 265         struct pipe_surface *surf = batch->key.cbufs[0];
 266         struct panfrost_resource *rsrc = pan_resource(surf->texture);
 267         unsigned level = surf->u.tex.level;
 268
 269         if (!rsrc->slices[level].initialized)
 270                 return;
 271
 272         batch->ctx->wallpaper_batch = batch;
 273
 274         /* Clamp the rendering area to the damage extent. The
 275          * KHR_partial_update() spec states that trying to render outside of
 276          * the damage region is "undefined behavior", so we should be safe.
 277          */
 278         unsigned damage_width = (rsrc->damage.extent.maxx - rsrc->damage.extent.minx);
 279         unsigned damage_height = (rsrc->damage.extent.maxy - rsrc->damage.extent.miny);
 280
 281         if (damage_width && damage_height) {
 282                 panfrost_batch_intersection_scissor(batch,
 283                                                     rsrc->damage.extent.minx,
 284                                                     rsrc->damage.extent.miny,
 285                                                     rsrc->damage.extent.maxx,
 286                                                     rsrc->damage.extent.maxy);
 287         }
 288
 289         /* FIXME: Looks like aligning on a tile is not enough, but
 290          * aligning on twice the tile size seems to works. We don't
 291          * know exactly what happens here but this deserves extra
 292          * investigation to figure it out.
 293          */
 294         batch->minx = batch->minx & ~((MALI_TILE_LENGTH * 2) - 1);
 295         batch->miny = batch->miny & ~((MALI_TILE_LENGTH * 2) - 1);
 296         batch->maxx = MIN2(ALIGN_POT(batch->maxx, MALI_TILE_LENGTH * 2),
 297                            rsrc->base.width0);
 298         batch->maxy = MIN2(ALIGN_POT(batch->maxy, MALI_TILE_LENGTH * 2),
 299                            rsrc->base.height0);
 300
 301         struct pipe_scissor_state damage;
 302         struct pipe_box rects[4];
 303
 304         /* Clamp the damage box to the rendering area. */
 305         damage.minx = MAX2(batch->minx, rsrc->damage.biggest_rect.x);
 306         damage.miny = MAX2(batch->miny, rsrc->damage.biggest_rect.y);
 307         damage.maxx = MIN2(batch->maxx,
 308                            rsrc->damage.biggest_rect.x +
 309                            rsrc->damage.biggest_rect.width);
 310         damage.maxy = MIN2(batch->maxy,
 311                            rsrc->damage.biggest_rect.y +
 312                            rsrc->damage.biggest_rect.height);
 313
 314         /* One damage rectangle means we can end up with at most 4 reload
 315          * regions:
 316          * 1: left region, only exists if damage.x > 0
 317          * 2: right region, only exists if damage.x + damage.width < fb->width
 318          * 3: top region, only exists if damage.y > 0. The intersection with
 319          *    the left and right regions are dropped
 320          * 4: bottom region, only exists if damage.y + damage.height < fb->height.
 321          *    The intersection with the left and right regions are dropped
 322          *
 323          *                    ____________________________
 324          *                    |       |     3     |      |
 325          *                    |       |___________|      |
 326          *                    |       |   damage  |      |
 327          *                    |   1   |    rect   |   2  |
 328          *                    |       |___________|      |
 329          *                    |       |     4     |      |
 330          *                    |_______|___________|______|
 331          */
 332         u_box_2d(batch->minx, batch->miny, damage.minx - batch->minx,
 333                  batch->maxy - batch->miny, &rects[0]);
 334         u_box_2d(damage.maxx, batch->miny, batch->maxx - damage.maxx,
 335                  batch->maxy - batch->miny, &rects[1]);
 336         u_box_2d(damage.minx, batch->miny, damage.maxx - damage.minx,
 337                  damage.miny - batch->miny, &rects[2]);
 338         u_box_2d(damage.minx, damage.maxy, damage.maxx - damage.minx,
 339                  batch->maxy - damage.maxy, &rects[3]);
 340
 341         for (unsigned i = 0; i < 4; i++) {
 342                 /* Width and height are always >= 0 even if width is declared as a
 343                  * signed integer: u_box_2d() helper takes unsigned args and
 344                  * panfrost_set_damage_region() is taking care of clamping
 345                  * negative values.
 346                  */
 347                 if (!rects[i].width || !rects[i].height)
 348                         continue;
 349
 350                 /* Blit the wallpaper in */
 351                 panfrost_blit_wallpaper(batch->ctx, &rects[i]);
 352         }
 353         batch->ctx->wallpaper_batch = NULL;
 354 }
 355
 356 static int
 357 panfrost_batch_submit_ioctl(struct panfrost_batch *batch,
 358                             mali_ptr first_job_desc,
 359                             uint32_t reqs)
 360 {
 361         struct panfrost_context *ctx = batch->ctx;
 362         struct pipe_context *gallium = (struct pipe_context *) ctx;
 363         struct panfrost_screen *screen = pan_screen(gallium->screen);
 364         struct drm_panfrost_submit submit = {0,};
 365         uint32_t *bo_handles;
 366         int ret;
 367
 368         submit.in_syncs = (u64) (uintptr_t) &ctx->out_sync;
 369         submit.in_sync_count = 1;
 370
 371         submit.out_sync = ctx->out_sync;
 372
 373         submit.jc = first_job_desc;
 374         submit.requirements = reqs;
 375
 376         bo_handles = calloc(batch->bos->entries, sizeof(*bo_handles));
 377         assert(bo_handles);
 378
 379         set_foreach(batch->bos, entry) {
 380                 struct panfrost_bo *bo = (struct panfrost_bo *)entry->key;
 381                 assert(bo->gem_handle > 0);
 382                 bo_handles[submit.bo_handle_count++] = bo->gem_handle;
 383         }
 384
 385         submit.bo_handles = (u64) (uintptr_t) bo_handles;
 386         ret = drmIoctl(screen->fd, DRM_IOCTL_PANFROST_SUBMIT, &submit);
 387         free(bo_handles);
 388         if (ret) {
 389                 fprintf(stderr, "Error submitting: %m\n");
 390                 return errno;
 391         }
 392
 393         /* Trace the job if we're doing that */
 394         if (pan_debug & PAN_DBG_TRACE) {
 395                 /* Wait so we can get errors reported back */
 396                 drmSyncobjWait(screen->fd, &ctx->out_sync, 1, INT64_MAX, 0, NULL);
 397                 pandecode_jc(submit.jc, FALSE);
 398         }
 399
 400         return 0;
 401 }
 402
 403 static int
 404 panfrost_batch_submit_jobs(struct panfrost_batch *batch)
 405 {
 406         bool has_draws = batch->first_job.gpu;
 407         int ret = 0;
 408
 409         if (has_draws) {
 410                 ret = panfrost_batch_submit_ioctl(batch, batch->first_job.gpu, 0);
 411                 assert(!ret);
 412         }
 413
 414         if (batch->first_tiler.gpu || batch->clear) {
 415                 mali_ptr fragjob = panfrost_fragment_job(batch, has_draws);
 416
 417                 ret = panfrost_batch_submit_ioctl(batch, fragjob, PANFROST_JD_REQ_FS);
 418                 assert(!ret);
 419         }
 420
 421         return ret;
 422 }
 423
 424 void
 425 panfrost_batch_submit(struct panfrost_batch *batch)
 426 {
 427         assert(batch);
 428
 429         struct panfrost_context *ctx = batch->ctx;
 430         int ret;
 431
 432         /* Nothing to do! */
 433         if (!batch->last_job.gpu && !batch->clear)
 434                 goto out;
 435
 436         if (!batch->clear && batch->last_tiler.gpu)
 437                 panfrost_batch_draw_wallpaper(batch);
 438
 439         panfrost_scoreboard_link_batch(batch);
 440
 441         ret = panfrost_batch_submit_jobs(batch);
 442
 443         if (ret)
 444                 fprintf(stderr, "panfrost_batch_submit failed: %d\n", ret);
 445
 446 out:
 447         /* If this is the bound batch, the panfrost_context parameters are
 448          * relevant so submitting it invalidates those paramaters, but if it's
 449          * not bound, the context parameters are for some other batch so we
 450          * can't invalidate them.
 451          */
 452         if (ctx->batch == batch)
 453                 panfrost_invalidate_frame(ctx);
 454
 455         /* The job has been submitted, let's invalidate the current FBO job
 456          * cache.
 457          */
 458         assert(!ctx->batch || batch == ctx->batch);
 459         ctx->batch = NULL;
 460
 461         /* We always stall the pipeline for correct results since pipelined
 462          * rendering is quite broken right now (to be fixed by the panfrost_job
 463          * refactor, just take the perf hit for correctness)
 464          */
 465         drmSyncobjWait(pan_screen(ctx->base.screen)->fd, &ctx->out_sync, 1,
 466                        INT64_MAX, 0, NULL);
 467         panfrost_free_batch(batch);
 468 }
 469
 470 void
 471 panfrost_batch_set_requirements(struct panfrost_batch *batch)
 472 {
 473         struct panfrost_context *ctx = batch->ctx;
 474
 475         if (ctx->rasterizer && ctx->rasterizer->base.multisample)
 476                 batch->requirements |= PAN_REQ_MSAA;
 477
 478         if (ctx->depth_stencil && ctx->depth_stencil->depth.writemask)
 479                 batch->requirements |= PAN_REQ_DEPTH_WRITE;
 480 }
 481
 482 /* Helper to smear a 32-bit color across 128-bit components */
 483
 484 static void
 485 pan_pack_color_32(uint32_t *packed, uint32_t v)
 486 {
 487         for (unsigned i = 0; i < 4; ++i)
 488                 packed[i] = v;
 489 }
 490
 491 static void
 492 pan_pack_color_64(uint32_t *packed, uint32_t lo, uint32_t hi)
 493 {
 494         for (unsigned i = 0; i < 4; i += 2) {
 495                 packed[i + 0] = lo;
 496                 packed[i + 1] = hi;
 497         }
 498 }
 499
 500 static void
 501 pan_pack_color(uint32_t *packed, const union pipe_color_union *color, enum pipe_format format)
 502 {
 503         /* Alpha magicked to 1.0 if there is no alpha */
 504
 505         bool has_alpha = util_format_has_alpha(format);
 506         float clear_alpha = has_alpha ? color->f[3] : 1.0f;
 507
 508         /* Packed color depends on the framebuffer format */
 509
 510         const struct util_format_description *desc =
 511                 util_format_description(format);
 512
 513         if (util_format_is_rgba8_variant(desc)) {
 514                 pan_pack_color_32(packed,
 515                                   (float_to_ubyte(clear_alpha) << 24) |
 516                                   (float_to_ubyte(color->f[2]) << 16) |
 517                                   (float_to_ubyte(color->f[1]) <<  8) |
 518                                   (float_to_ubyte(color->f[0]) <<  0));
 519         } else if (format == PIPE_FORMAT_B5G6R5_UNORM) {
 520                 /* First, we convert the components to R5, G6, B5 separately */
 521                 unsigned r5 = CLAMP(color->f[0], 0.0, 1.0) * 31.0;
 522                 unsigned g6 = CLAMP(color->f[1], 0.0, 1.0) * 63.0;
 523                 unsigned b5 = CLAMP(color->f[2], 0.0, 1.0) * 31.0;
 524
 525                 /* Then we pack into a sparse u32. TODO: Why these shifts? */
 526                 pan_pack_color_32(packed, (b5 << 25) | (g6 << 14) | (r5 << 5));
 527         } else if (format == PIPE_FORMAT_B4G4R4A4_UNORM) {
 528                 /* We scale the components against 0xF0 (=240.0), rather than 0xFF */
 529                 unsigned r4 = CLAMP(color->f[0], 0.0, 1.0) * 240.0;
 530                 unsigned g4 = CLAMP(color->f[1], 0.0, 1.0) * 240.0;
 531                 unsigned b4 = CLAMP(color->f[2], 0.0, 1.0) * 240.0;
 532                 unsigned a4 = CLAMP(clear_alpha, 0.0, 1.0) * 240.0;
 533
 534                 /* Pack on *byte* intervals */
 535                 pan_pack_color_32(packed, (a4 << 24) | (b4 << 16) | (g4 << 8) | r4);
 536         } else if (format == PIPE_FORMAT_B5G5R5A1_UNORM) {
 537                 /* Scale as expected but shift oddly */
 538                 unsigned r5 = round(CLAMP(color->f[0], 0.0, 1.0)) * 31.0;
 539                 unsigned g5 = round(CLAMP(color->f[1], 0.0, 1.0)) * 31.0;
 540                 unsigned b5 = round(CLAMP(color->f[2], 0.0, 1.0)) * 31.0;
 541                 unsigned a1 = round(CLAMP(clear_alpha, 0.0, 1.0)) * 1.0;
 542
 543                 pan_pack_color_32(packed, (a1 << 31) | (b5 << 25) | (g5 << 15) | (r5 << 5));
 544         } else {
 545                 /* Try Gallium's generic default path. Doesn't work for all
 546                  * formats but it's a good guess. */
 547
 548                 union util_color out;
 549
 550                 if (util_format_is_pure_integer(format)) {
 551                         memcpy(out.ui, color->ui, 16);
 552                 } else {
 553                         util_pack_color(color->f, format, &out);
 554                 }
 555
 556                 unsigned size = util_format_get_blocksize(format);
 557
 558                 if (size == 1) {
 559                         unsigned b = out.ui[0];
 560                         unsigned s = b | (b << 8);
 561                         pan_pack_color_32(packed, s | (s << 16));
 562                 } else if (size == 2)
 563                         pan_pack_color_32(packed, out.ui[0] | (out.ui[0] << 16));
 564                 else if (size == 4)
 565                         pan_pack_color_32(packed, out.ui[0]);
 566                 else if (size == 8)
 567                         pan_pack_color_64(packed, out.ui[0], out.ui[1]);
 568                 else if (size == 16)
 569                         memcpy(packed, out.ui, 16);
 570                 else
 571                         unreachable("Unknown generic format size packing clear colour");
 572         }
 573 }
 574
 575 void
 576 panfrost_batch_clear(struct panfrost_batch *batch,
 577                      unsigned buffers,
 578                      const union pipe_color_union *color,
 579                      double depth, unsigned stencil)
 580 {
 581         struct panfrost_context *ctx = batch->ctx;
 582
 583         if (buffers & PIPE_CLEAR_COLOR) {
 584                 for (unsigned i = 0; i < PIPE_MAX_COLOR_BUFS; ++i) {
 585                         if (!(buffers & (PIPE_CLEAR_COLOR0 << i)))
 586                                 continue;
 587
 588                         enum pipe_format format = ctx->pipe_framebuffer.cbufs[i]->format;
 589                         pan_pack_color(batch->clear_color[i], color, format);
 590                 }
 591         }
 592
 593         if (buffers & PIPE_CLEAR_DEPTH) {
 594                 batch->clear_depth = depth;
 595         }
 596
 597         if (buffers & PIPE_CLEAR_STENCIL) {
 598                 batch->clear_stencil = stencil;
 599         }
 600
 601         batch->clear |= buffers;
 602
 603         /* Clearing affects the entire framebuffer (by definition -- this is
 604          * the Gallium clear callback, which clears the whole framebuffer. If
 605          * the scissor test were enabled from the GL side, the state tracker
 606          * would emit a quad instead and we wouldn't go down this code path) */
 607
 608         panfrost_batch_union_scissor(batch, 0, 0,
 609                                      ctx->pipe_framebuffer.width,
 610                                      ctx->pipe_framebuffer.height);
 611 }
 612
 613 static bool
 614 panfrost_batch_compare(const void *a, const void *b)
 615 {
 616         return util_framebuffer_state_equal(a, b);
 617 }
 618
 619 static uint32_t
 620 panfrost_batch_hash(const void *key)
 621 {
 622         return _mesa_hash_data(key, sizeof(struct pipe_framebuffer_state));
 623 }
 624
 625 /* Given a new bounding rectangle (scissor), let the job cover the union of the
 626  * new and old bounding rectangles */
 627
 628 void
 629 panfrost_batch_union_scissor(struct panfrost_batch *batch,
 630                              unsigned minx, unsigned miny,
 631                              unsigned maxx, unsigned maxy)
 632 {
 633         batch->minx = MIN2(batch->minx, minx);
 634         batch->miny = MIN2(batch->miny, miny);
 635         batch->maxx = MAX2(batch->maxx, maxx);
 636         batch->maxy = MAX2(batch->maxy, maxy);
 637 }
 638
 639 void
 640 panfrost_batch_intersection_scissor(struct panfrost_batch *batch,
 641                                   unsigned minx, unsigned miny,
 642                                   unsigned maxx, unsigned maxy)
 643 {
 644         batch->minx = MAX2(batch->minx, minx);
 645         batch->miny = MAX2(batch->miny, miny);
 646         batch->maxx = MIN2(batch->maxx, maxx);
 647         batch->maxy = MIN2(batch->maxy, maxy);
 648 }
 649
 650 /* Are we currently rendering to the screen (rather than an FBO)? */
 651
 652 bool
 653 panfrost_batch_is_scanout(struct panfrost_batch *batch)
 654 {
 655         /* If there is no color buffer, it's an FBO */
 656         if (batch->key.nr_cbufs != 1)
 657                 return false;
 658
 659         /* If we're too early that no framebuffer was sent, it's scanout */
 660         if (!batch->key.cbufs[0])
 661                 return true;
 662
 663         return batch->key.cbufs[0]->texture->bind & PIPE_BIND_DISPLAY_TARGET ||
 664                batch->key.cbufs[0]->texture->bind & PIPE_BIND_SCANOUT ||
 665                batch->key.cbufs[0]->texture->bind & PIPE_BIND_SHARED;
 666 }
 667
 668 void
 669 panfrost_batch_init(struct panfrost_context *ctx)
 670 {
 671         ctx->batches = _mesa_hash_table_create(ctx,
 672                                                panfrost_batch_hash,
 673                                                panfrost_batch_compare);
 674 }