src/gallium/drivers/vc4/vc4_resource.c

   1 /*
   2  * Copyright © 2014 Broadcom
   3  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
   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
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  */
  24
  25 #include "util/u_memory.h"
  26 #include "util/u_format.h"
  27 #include "util/u_inlines.h"
  28 #include "util/u_surface.h"
  29
  30 #include "vc4_screen.h"
  31 #include "vc4_context.h"
  32 #include "vc4_resource.h"
  33 #include "vc4_tiling.h"
  34
  35 static bool miptree_debug = false;
  36
  37 static void
  38 vc4_resource_bo_alloc(struct vc4_resource *rsc)
  39 {
  40         struct pipe_resource *prsc = &rsc->base.b;
  41         struct pipe_screen *pscreen = prsc->screen;
  42
  43         if (miptree_debug) {
  44                 fprintf(stderr, "alloc %p: size %d + offset %d -> %d\n",
  45                         rsc,
  46                         rsc->slices[0].size,
  47                         rsc->slices[0].offset,
  48                         rsc->slices[0].offset +
  49                         rsc->slices[0].size +
  50                         rsc->cube_map_stride * (prsc->array_size - 1));
  51         }
  52
  53         vc4_bo_unreference(&rsc->bo);
  54         rsc->bo = vc4_bo_alloc(vc4_screen(pscreen),
  55                                rsc->slices[0].offset +
  56                                rsc->slices[0].size +
  57                                rsc->cube_map_stride * (prsc->array_size - 1),
  58                                "resource");
  59 }
  60
  61 static void
  62 vc4_resource_transfer_unmap(struct pipe_context *pctx,
  63                             struct pipe_transfer *ptrans)
  64 {
  65         struct vc4_context *vc4 = vc4_context(pctx);
  66         struct vc4_transfer *trans = vc4_transfer(ptrans);
  67         struct pipe_resource *prsc = ptrans->resource;
  68         struct vc4_resource *rsc = vc4_resource(prsc);
  69         struct vc4_resource_slice *slice = &rsc->slices[ptrans->level];
  70
  71         if (trans->map) {
  72                 if (ptrans->usage & PIPE_TRANSFER_WRITE) {
  73                         vc4_store_tiled_image(rsc->bo->map + slice->offset +
  74                                               ptrans->box.z * rsc->cube_map_stride,
  75                                               slice->stride,
  76                                               trans->map, ptrans->stride,
  77                                               slice->tiling, rsc->cpp,
  78                                               &ptrans->box);
  79                 }
  80                 free(trans->map);
  81         }
  82
  83         pipe_resource_reference(&ptrans->resource, NULL);
  84         util_slab_free(&vc4->transfer_pool, ptrans);
  85 }
  86
  87 static void *
  88 vc4_resource_transfer_map(struct pipe_context *pctx,
  89                           struct pipe_resource *prsc,
  90                           unsigned level, unsigned usage,
  91                           const struct pipe_box *box,
  92                           struct pipe_transfer **pptrans)
  93 {
  94         struct vc4_context *vc4 = vc4_context(pctx);
  95         struct vc4_resource *rsc = vc4_resource(prsc);
  96         struct vc4_resource_slice *slice = &rsc->slices[level];
  97         struct vc4_transfer *trans;
  98         struct pipe_transfer *ptrans;
  99         enum pipe_format format = prsc->format;
 100         char *buf;
 101
 102         if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE) {
 103                 vc4_resource_bo_alloc(rsc);
 104         } else if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
 105                 if (vc4_cl_references_bo(pctx, rsc->bo)) {
 106                         if ((usage & PIPE_TRANSFER_DISCARD_RANGE) &&
 107                             prsc->last_level == 0 &&
 108                             prsc->width0 == box->width &&
 109                             prsc->height0 == box->height &&
 110                             prsc->depth0 == box->depth) {
 111                                 vc4_resource_bo_alloc(rsc);
 112                         } else {
 113                                 vc4_flush(pctx);
 114                         }
 115                 }
 116         }
 117
 118         if (usage & PIPE_TRANSFER_WRITE)
 119                 rsc->writes++;
 120
 121         trans = util_slab_alloc(&vc4->transfer_pool);
 122         if (!trans)
 123                 return NULL;
 124
 125         /* XXX: Handle DONTBLOCK, DISCARD_RANGE, PERSISTENT, COHERENT. */
 126
 127         /* util_slab_alloc() doesn't zero: */
 128         memset(trans, 0, sizeof(*trans));
 129         ptrans = &trans->base;
 130
 131         pipe_resource_reference(&ptrans->resource, prsc);
 132         ptrans->level = level;
 133         ptrans->usage = usage;
 134         ptrans->box = *box;
 135
 136         /* Note that the current kernel implementation is synchronous, so no
 137          * need to do syncing stuff here yet.
 138          */
 139
 140         if (usage & PIPE_TRANSFER_UNSYNCHRONIZED)
 141                 buf = vc4_bo_map_unsynchronized(rsc->bo);
 142         else
 143                 buf = vc4_bo_map(rsc->bo);
 144         if (!buf) {
 145                 fprintf(stderr, "Failed to map bo\n");
 146                 goto fail;
 147         }
 148
 149         *pptrans = ptrans;
 150
 151         if (rsc->tiled) {
 152                 uint32_t utile_w = vc4_utile_width(rsc->cpp);
 153                 uint32_t utile_h = vc4_utile_height(rsc->cpp);
 154
 155                 /* No direct mappings of tiled, since we need to manually
 156                  * tile/untile.
 157                  */
 158                 if (usage & PIPE_TRANSFER_MAP_DIRECTLY)
 159                         return NULL;
 160
 161                 /* We need to align the box to utile boundaries, since that's
 162                  * what load/store operate on.
 163                  */
 164                 uint32_t box_start_x = ptrans->box.x & (utile_w - 1);
 165                 uint32_t box_start_y = ptrans->box.y & (utile_h - 1);
 166                 ptrans->box.width += box_start_x;
 167                 ptrans->box.x -= box_start_x;
 168                 ptrans->box.height += box_start_y;
 169                 ptrans->box.y -= box_start_y;
 170                 ptrans->box.width = align(ptrans->box.width, utile_w);
 171                 ptrans->box.height = align(ptrans->box.height, utile_h);
 172
 173                 ptrans->stride = ptrans->box.width * rsc->cpp;
 174                 ptrans->layer_stride = ptrans->stride;
 175
 176                 trans->map = malloc(ptrans->stride * ptrans->box.height);
 177                 if (usage & PIPE_TRANSFER_READ) {
 178                         vc4_load_tiled_image(trans->map, ptrans->stride,
 179                                              buf + slice->offset +
 180                                              box->z * rsc->cube_map_stride,
 181                                              slice->stride,
 182                                              slice->tiling, rsc->cpp,
 183                                              &ptrans->box);
 184                 }
 185                 return (trans->map +
 186                         box_start_x * rsc->cpp +
 187                         box_start_y * ptrans->stride);
 188         } else {
 189                 ptrans->stride = slice->stride;
 190                 ptrans->layer_stride = ptrans->stride;
 191
 192                 return buf + slice->offset +
 193                         box->y / util_format_get_blockheight(format) * ptrans->stride +
 194                         box->x / util_format_get_blockwidth(format) * rsc->cpp +
 195                         box->z * rsc->cube_map_stride;
 196         }
 197
 198
 199 fail:
 200         vc4_resource_transfer_unmap(pctx, ptrans);
 201         return NULL;
 202 }
 203
 204 static void
 205 vc4_resource_destroy(struct pipe_screen *pscreen,
 206                      struct pipe_resource *prsc)
 207 {
 208         struct vc4_resource *rsc = vc4_resource(prsc);
 209         pipe_resource_reference(&rsc->shadow_parent, NULL);
 210         vc4_bo_unreference(&rsc->bo);
 211         free(rsc);
 212 }
 213
 214 static boolean
 215 vc4_resource_get_handle(struct pipe_screen *pscreen,
 216                         struct pipe_resource *prsc,
 217                         struct winsys_handle *handle)
 218 {
 219         struct vc4_resource *rsc = vc4_resource(prsc);
 220
 221         return vc4_screen_bo_get_handle(pscreen, rsc->bo, rsc->slices[0].stride,
 222                                         handle);
 223 }
 224
 225 static const struct u_resource_vtbl vc4_resource_vtbl = {
 226         .resource_get_handle      = vc4_resource_get_handle,
 227         .resource_destroy         = vc4_resource_destroy,
 228         .transfer_map             = vc4_resource_transfer_map,
 229         .transfer_flush_region    = u_default_transfer_flush_region,
 230         .transfer_unmap           = vc4_resource_transfer_unmap,
 231         .transfer_inline_write    = u_default_transfer_inline_write,
 232 };
 233
 234 static void
 235 vc4_setup_slices(struct vc4_resource *rsc)
 236 {
 237         struct pipe_resource *prsc = &rsc->base.b;
 238         uint32_t width = prsc->width0;
 239         uint32_t height = prsc->height0;
 240         uint32_t pot_width = util_next_power_of_two(width);
 241         uint32_t pot_height = util_next_power_of_two(height);
 242         uint32_t offset = 0;
 243         uint32_t utile_w = vc4_utile_width(rsc->cpp);
 244         uint32_t utile_h = vc4_utile_height(rsc->cpp);
 245
 246         for (int i = prsc->last_level; i >= 0; i--) {
 247                 struct vc4_resource_slice *slice = &rsc->slices[i];
 248
 249                 uint32_t level_width, level_height;
 250                 if (i == 0) {
 251                         level_width = width;
 252                         level_height = height;
 253                 } else {
 254                         level_width = u_minify(pot_width, i);
 255                         level_height = u_minify(pot_height, i);
 256                 }
 257
 258                 if (!rsc->tiled) {
 259                         slice->tiling = VC4_TILING_FORMAT_LINEAR;
 260                         level_width = align(level_width, utile_w);
 261                 } else {
 262                         if (vc4_size_is_lt(level_width, level_height,
 263                                            rsc->cpp)) {
 264                                 slice->tiling = VC4_TILING_FORMAT_LT;
 265                                 level_width = align(level_width, utile_w);
 266                                 level_height = align(level_height, utile_h);
 267                         } else {
 268                                 slice->tiling = VC4_TILING_FORMAT_T;
 269                                 level_width = align(level_width,
 270                                                     4 * 2 * utile_w);
 271                                 level_height = align(level_height,
 272                                                      4 * 2 * utile_h);
 273                         }
 274                 }
 275
 276                 slice->offset = offset;
 277                 slice->stride = level_width * rsc->cpp;
 278                 slice->size = level_height * slice->stride;
 279
 280                 offset += slice->size;
 281
 282                 if (miptree_debug) {
 283                         static const char tiling_chars[] = {
 284                                 [VC4_TILING_FORMAT_LINEAR] = 'R',
 285                                 [VC4_TILING_FORMAT_LT] = 'L',
 286                                 [VC4_TILING_FORMAT_T] = 'T'
 287                         };
 288                         fprintf(stderr,
 289                                 "rsc setup %p (format %d), %dx%d: "
 290                                 "level %d (%c) -> %dx%d, stride %d@0x%08x\n",
 291                                 rsc, rsc->vc4_format,
 292                                 prsc->width0, prsc->height0,
 293                                 i, tiling_chars[slice->tiling],
 294                                 level_width, level_height,
 295                                 slice->stride, slice->offset);
 296                 }
 297         }
 298
 299         /* The texture base pointer that has to point to level 0 doesn't have
 300          * intra-page bits, so we have to align it, and thus shift up all the
 301          * smaller slices.
 302          */
 303         uint32_t page_align_offset = (align(rsc->slices[0].offset, 4096) -
 304                                       rsc->slices[0].offset);
 305         if (page_align_offset) {
 306                 for (int i = 0; i <= prsc->last_level; i++)
 307                         rsc->slices[i].offset += page_align_offset;
 308         }
 309
 310         /* Cube map faces appear as whole miptrees at a page-aligned offset
 311          * from the first face's miptree.
 312          */
 313         if (prsc->target == PIPE_TEXTURE_CUBE) {
 314                 rsc->cube_map_stride = align(rsc->slices[0].offset +
 315                                              rsc->slices[0].size, 4096);
 316         }
 317 }
 318
 319 static struct vc4_resource *
 320 vc4_resource_setup(struct pipe_screen *pscreen,
 321                    const struct pipe_resource *tmpl)
 322 {
 323         struct vc4_resource *rsc = CALLOC_STRUCT(vc4_resource);
 324         if (!rsc)
 325                 return NULL;
 326         struct pipe_resource *prsc = &rsc->base.b;
 327
 328         *prsc = *tmpl;
 329
 330         pipe_reference_init(&prsc->reference, 1);
 331         prsc->screen = pscreen;
 332
 333         rsc->base.vtbl = &vc4_resource_vtbl;
 334         rsc->cpp = util_format_get_blocksize(tmpl->format);
 335
 336         assert(rsc->cpp);
 337
 338         return rsc;
 339 }
 340
 341 static enum vc4_texture_data_type
 342 get_resource_texture_format(struct pipe_resource *prsc)
 343 {
 344         struct vc4_resource *rsc = vc4_resource(prsc);
 345         uint8_t format = vc4_get_tex_format(prsc->format);
 346
 347         if (!rsc->tiled) {
 348                 assert(format == VC4_TEXTURE_TYPE_RGBA8888);
 349                 return VC4_TEXTURE_TYPE_RGBA32R;
 350         }
 351
 352         return format;
 353 }
 354
 355 struct pipe_resource *
 356 vc4_resource_create(struct pipe_screen *pscreen,
 357                     const struct pipe_resource *tmpl)
 358 {
 359         struct vc4_resource *rsc = vc4_resource_setup(pscreen, tmpl);
 360         struct pipe_resource *prsc = &rsc->base.b;
 361
 362         /* We have to make shared be untiled, since we don't have any way to
 363          * communicate metadata about tiling currently.
 364          */
 365         if (tmpl->target == PIPE_BUFFER ||
 366             (tmpl->bind & (PIPE_BIND_SCANOUT |
 367                            PIPE_BIND_LINEAR |
 368                            PIPE_BIND_SHARED |
 369                            PIPE_BIND_CURSOR))) {
 370                 rsc->tiled = false;
 371         } else {
 372                 rsc->tiled = true;
 373         }
 374
 375         if (tmpl->target != PIPE_BUFFER)
 376                 rsc->vc4_format = get_resource_texture_format(prsc);
 377
 378         vc4_setup_slices(rsc);
 379         vc4_resource_bo_alloc(rsc);
 380         if (!rsc->bo)
 381                 goto fail;
 382
 383         return prsc;
 384 fail:
 385         vc4_resource_destroy(pscreen, prsc);
 386         return NULL;
 387 }
 388
 389 static struct pipe_resource *
 390 vc4_resource_from_handle(struct pipe_screen *pscreen,
 391                          const struct pipe_resource *tmpl,
 392                          struct winsys_handle *handle)
 393 {
 394         struct vc4_resource *rsc = vc4_resource_setup(pscreen, tmpl);
 395         struct pipe_resource *prsc = &rsc->base.b;
 396         struct vc4_resource_slice *slice = &rsc->slices[0];
 397
 398         if (!rsc)
 399                 return NULL;
 400
 401         rsc->tiled = false;
 402         rsc->bo = vc4_screen_bo_from_handle(pscreen, handle);
 403         if (!rsc->bo)
 404                 goto fail;
 405
 406         if (!using_vc4_simulator)
 407                 slice->stride = handle->stride;
 408         else
 409                 slice->stride = align(prsc->width0 * rsc->cpp, 16);
 410
 411         slice->tiling = VC4_TILING_FORMAT_LINEAR;
 412
 413         rsc->vc4_format = get_resource_texture_format(prsc);
 414
 415         if (miptree_debug) {
 416                 fprintf(stderr,
 417                         "rsc import %p (format %d), %dx%d: "
 418                         "level 0 (R) -> stride %d@0x%08x\n",
 419                         rsc, rsc->vc4_format,
 420                         prsc->width0, prsc->height0,
 421                         slice->stride, slice->offset);
 422         }
 423
 424         return prsc;
 425
 426 fail:
 427         vc4_resource_destroy(pscreen, prsc);
 428         return NULL;
 429 }
 430
 431 static struct pipe_surface *
 432 vc4_create_surface(struct pipe_context *pctx,
 433                    struct pipe_resource *ptex,
 434                    const struct pipe_surface *surf_tmpl)
 435 {
 436         struct vc4_surface *surface = CALLOC_STRUCT(vc4_surface);
 437         struct vc4_resource *rsc = vc4_resource(ptex);
 438
 439         if (!surface)
 440                 return NULL;
 441
 442         assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 443
 444         struct pipe_surface *psurf = &surface->base;
 445         unsigned level = surf_tmpl->u.tex.level;
 446
 447         pipe_reference_init(&psurf->reference, 1);
 448         pipe_resource_reference(&psurf->texture, ptex);
 449
 450         psurf->context = pctx;
 451         psurf->format = surf_tmpl->format;
 452         psurf->width = u_minify(ptex->width0, level);
 453         psurf->height = u_minify(ptex->height0, level);
 454         psurf->u.tex.level = level;
 455         psurf->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 456         psurf->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 457         surface->offset = rsc->slices[level].offset;
 458         surface->tiling = rsc->slices[level].tiling;
 459
 460         return &surface->base;
 461 }
 462
 463 static void
 464 vc4_surface_destroy(struct pipe_context *pctx, struct pipe_surface *psurf)
 465 {
 466         pipe_resource_reference(&psurf->texture, NULL);
 467         FREE(psurf);
 468 }
 469
 470 /** Debug routine to dump the contents of an 8888 surface to the console */
 471 void
 472 vc4_dump_surface(struct pipe_surface *psurf)
 473 {
 474         if (!psurf)
 475                 return;
 476
 477         struct pipe_resource *prsc = psurf->texture;
 478         struct vc4_resource *rsc = vc4_resource(prsc);
 479         uint32_t *map = vc4_bo_map(rsc->bo);
 480         uint32_t stride = rsc->slices[0].stride / 4;
 481         uint32_t width = psurf->width;
 482         uint32_t height = psurf->height;
 483         uint32_t chunk_w = width / 79;
 484         uint32_t chunk_h = height / 40;
 485         uint32_t found_colors[10];
 486         uint32_t num_found_colors = 0;
 487
 488         if (rsc->vc4_format != VC4_TEXTURE_TYPE_RGBA32R) {
 489                 fprintf(stderr, "%s: Unsupported format %s\n",
 490                         __func__, util_format_short_name(psurf->format));
 491                 return;
 492         }
 493
 494         for (int by = 0; by < height; by += chunk_h) {
 495                 for (int bx = 0; bx < width; bx += chunk_w) {
 496                         int all_found_color = -1; /* nothing found */
 497
 498                         for (int y = by; y < MIN2(height, by + chunk_h); y++) {
 499                                 for (int x = bx; x < MIN2(width, bx + chunk_w); x++) {
 500                                         uint32_t pix = map[y * stride + x];
 501
 502                                         int i;
 503                                         for (i = 0; i < num_found_colors; i++) {
 504                                                 if (pix == found_colors[i])
 505                                                         break;
 506                                         }
 507                                         if (i == num_found_colors &&
 508                                             num_found_colors <
 509                                             ARRAY_SIZE(found_colors)) {
 510                                                 found_colors[num_found_colors++] = pix;
 511                                         }
 512
 513                                         if (i < num_found_colors) {
 514                                                 if (all_found_color == -1)
 515                                                         all_found_color = i;
 516                                                 else if (i != all_found_color)
 517                                                         all_found_color = ARRAY_SIZE(found_colors);
 518                                         }
 519                                 }
 520                         }
 521                         /* If all pixels for this chunk have a consistent
 522                          * value, then print a character for it.  Either a
 523                          * fixed name (particularly common for piglit tests),
 524                          * or a runtime-generated number.
 525                          */
 526                         if (all_found_color >= 0 &&
 527                             all_found_color < ARRAY_SIZE(found_colors)) {
 528                                 static const struct {
 529                                         uint32_t val;
 530                                         const char *c;
 531                                 } named_colors[] = {
 532                                         { 0xff000000, "█" },
 533                                         { 0x00000000, "█" },
 534                                         { 0xffff0000, "r" },
 535                                         { 0xff00ff00, "g" },
 536                                         { 0xff0000ff, "b" },
 537                                         { 0xffffffff, "w" },
 538                                 };
 539                                 int i;
 540                                 for (i = 0; i < ARRAY_SIZE(named_colors); i++) {
 541                                         if (named_colors[i].val ==
 542                                             found_colors[all_found_color]) {
 543                                                 fprintf(stderr, "%s",
 544                                                         named_colors[i].c);
 545                                                 break;
 546                                         }
 547                                 }
 548                                 /* For unnamed colors, print a number and the
 549                                  * numbers will have values printed at the
 550                                  * end.
 551                                  */
 552                                 if (i == ARRAY_SIZE(named_colors)) {
 553                                         fprintf(stderr, "%c",
 554                                                 '0' + all_found_color);
 555                                 }
 556                         } else {
 557                                 /* If there's no consistent color, print this.
 558                                  */
 559                                 fprintf(stderr, ".");
 560                         }
 561                 }
 562                 fprintf(stderr, "\n");
 563         }
 564
 565         for (int i = 0; i < num_found_colors; i++) {
 566                 fprintf(stderr, "color %d: 0x%08x\n", i, found_colors[i]);
 567         }
 568 }
 569
 570 static void
 571 vc4_flush_resource(struct pipe_context *pctx, struct pipe_resource *resource)
 572 {
 573         /* All calls to flush_resource are followed by a flush of the context,
 574          * so there's nothing to do.
 575          */
 576 }
 577
 578 void
 579 vc4_update_shadow_baselevel_texture(struct pipe_context *pctx,
 580                                     struct pipe_sampler_view *view)
 581 {
 582         struct vc4_resource *shadow = vc4_resource(view->texture);
 583         struct vc4_resource *orig = vc4_resource(shadow->shadow_parent);
 584         assert(orig);
 585
 586         if (shadow->writes == orig->writes)
 587                 return;
 588
 589         perf_debug("Updating shadow texture due to %s\n",
 590                    view->u.tex.first_level ? "base level" : "raster layout");
 591
 592         for (int i = 0; i <= shadow->base.b.last_level; i++) {
 593                 unsigned width = u_minify(shadow->base.b.width0, i);
 594                 unsigned height = u_minify(shadow->base.b.height0, i);
 595                 struct pipe_blit_info info = {
 596                         .dst = {
 597                                 .resource = &shadow->base.b,
 598                                 .level = i,
 599                                 .box = {
 600                                         .x = 0,
 601                                         .y = 0,
 602                                         .z = 0,
 603                                         .width = width,
 604                                         .height = height,
 605                                         .depth = 1,
 606                                 },
 607                                 .format = shadow->base.b.format,
 608                         },
 609                         .src = {
 610                                 .resource = &orig->base.b,
 611                                 .level = view->u.tex.first_level + i,
 612                                 .box = {
 613                                         .x = 0,
 614                                         .y = 0,
 615                                         .z = 0,
 616                                         .width = width,
 617                                         .height = height,
 618                                         .depth = 1,
 619                                 },
 620                                 .format = orig->base.b.format,
 621                         },
 622                         .mask = ~0,
 623                 };
 624                 pctx->blit(pctx, &info);
 625         }
 626
 627         shadow->writes = orig->writes;
 628 }
 629
 630 /**
 631  * Converts a 4-byte index buffer to 2 bytes.
 632  *
 633  * Since GLES2 only has support for 1 and 2-byte indices, the hardware doesn't
 634  * include 4-byte index support, and we have to shrink it down.
 635  *
 636  * There's no fallback support for when indices end up being larger than 2^16,
 637  * though it will at least assertion fail.  Also, if the original index data
 638  * was in user memory, it would be nice to not have uploaded it to a VBO
 639  * before translating.
 640  */
 641 void
 642 vc4_update_shadow_index_buffer(struct pipe_context *pctx,
 643                                const struct pipe_index_buffer *ib)
 644 {
 645         struct vc4_resource *shadow = vc4_resource(ib->buffer);
 646         struct vc4_resource *orig = vc4_resource(shadow->shadow_parent);
 647         uint32_t count = shadow->base.b.width0 / 2;
 648
 649         if (shadow->writes == orig->writes)
 650                 return;
 651
 652         perf_debug("Fallback conversion for %d uint indices\n", count);
 653
 654         struct pipe_transfer *src_transfer;
 655         uint32_t *src = pipe_buffer_map_range(pctx, &orig->base.b,
 656                                               ib->offset,
 657                                               count * 4,
 658                                               PIPE_TRANSFER_READ, &src_transfer);
 659
 660         struct pipe_transfer *dst_transfer;
 661         uint16_t *dst = pipe_buffer_map_range(pctx, &shadow->base.b,
 662                                               0,
 663                                               count * 2,
 664                                               PIPE_TRANSFER_WRITE, &dst_transfer);
 665
 666         for (int i = 0; i < count; i++) {
 667                 uint32_t src_index = src[i];
 668                 assert(src_index <= 0xffff);
 669                 dst[i] = src_index;
 670         }
 671
 672         pctx->transfer_unmap(pctx, dst_transfer);
 673         pctx->transfer_unmap(pctx, src_transfer);
 674
 675         shadow->writes = orig->writes;
 676 }
 677
 678 void
 679 vc4_resource_screen_init(struct pipe_screen *pscreen)
 680 {
 681         pscreen->resource_create = vc4_resource_create;
 682         pscreen->resource_from_handle = vc4_resource_from_handle;
 683         pscreen->resource_get_handle = u_resource_get_handle_vtbl;
 684         pscreen->resource_destroy = u_resource_destroy_vtbl;
 685 }
 686
 687 void
 688 vc4_resource_context_init(struct pipe_context *pctx)
 689 {
 690         pctx->transfer_map = u_transfer_map_vtbl;
 691         pctx->transfer_flush_region = u_transfer_flush_region_vtbl;
 692         pctx->transfer_unmap = u_transfer_unmap_vtbl;
 693         pctx->transfer_inline_write = u_transfer_inline_write_vtbl;
 694         pctx->create_surface = vc4_create_surface;
 695         pctx->surface_destroy = vc4_surface_destroy;
 696         pctx->resource_copy_region = util_resource_copy_region;
 697         pctx->blit = vc4_blit;
 698         pctx->flush_resource = vc4_flush_resource;
 699 }