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 #include "util/u_upload_mgr.h"
  30
  31 #include "vc4_screen.h"
  32 #include "vc4_context.h"
  33 #include "vc4_resource.h"
  34 #include "vc4_tiling.h"
  35
  36 static bool miptree_debug = false;
  37
  38 static void
  39 vc4_resource_bo_alloc(struct vc4_resource *rsc)
  40 {
  41         struct pipe_resource *prsc = &rsc->base.b;
  42         struct pipe_screen *pscreen = prsc->screen;
  43
  44         if (miptree_debug) {
  45                 fprintf(stderr, "alloc %p: size %d + offset %d -> %d\n",
  46                         rsc,
  47                         rsc->slices[0].size,
  48                         rsc->slices[0].offset,
  49                         rsc->slices[0].offset +
  50                         rsc->slices[0].size +
  51                         rsc->cube_map_stride * (prsc->array_size - 1));
  52         }
  53
  54         vc4_bo_unreference(&rsc->bo);
  55         rsc->bo = vc4_bo_alloc(vc4_screen(pscreen),
  56                                rsc->slices[0].offset +
  57                                rsc->slices[0].size +
  58                                rsc->cube_map_stride * (prsc->array_size - 1),
  59                                "resource");
  60 }
  61
  62 static void
  63 vc4_resource_transfer_unmap(struct pipe_context *pctx,
  64                             struct pipe_transfer *ptrans)
  65 {
  66         struct vc4_context *vc4 = vc4_context(pctx);
  67         struct vc4_transfer *trans = vc4_transfer(ptrans);
  68         struct pipe_resource *prsc = ptrans->resource;
  69         struct vc4_resource *rsc = vc4_resource(prsc);
  70         struct vc4_resource_slice *slice = &rsc->slices[ptrans->level];
  71
  72         if (trans->map) {
  73                 if (ptrans->usage & PIPE_TRANSFER_WRITE) {
  74                         vc4_store_tiled_image(rsc->bo->map + slice->offset +
  75                                               ptrans->box.z * rsc->cube_map_stride,
  76                                               slice->stride,
  77                                               trans->map, ptrans->stride,
  78                                               slice->tiling, rsc->cpp,
  79                                               &ptrans->box);
  80                 }
  81                 free(trans->map);
  82         }
  83
  84         pipe_resource_reference(&ptrans->resource, NULL);
  85         util_slab_free(&vc4->transfer_pool, ptrans);
  86 }
  87
  88 static void *
  89 vc4_resource_transfer_map(struct pipe_context *pctx,
  90                           struct pipe_resource *prsc,
  91                           unsigned level, unsigned usage,
  92                           const struct pipe_box *box,
  93                           struct pipe_transfer **pptrans)
  94 {
  95         struct vc4_context *vc4 = vc4_context(pctx);
  96         struct vc4_resource *rsc = vc4_resource(prsc);
  97         struct vc4_resource_slice *slice = &rsc->slices[level];
  98         struct vc4_transfer *trans;
  99         struct pipe_transfer *ptrans;
 100         enum pipe_format format = prsc->format;
 101         char *buf;
 102
 103         if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE) {
 104                 vc4_resource_bo_alloc(rsc);
 105
 106                 /* If it might be bound as one of our vertex buffers, make
 107                  * sure we re-emit vertex buffer state.
 108                  */
 109                 if (prsc->bind & PIPE_BIND_VERTEX_BUFFER)
 110                         vc4->dirty |= VC4_DIRTY_VTXBUF;
 111         } else if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
 112                 if (vc4_cl_references_bo(pctx, rsc->bo)) {
 113                         if ((usage & PIPE_TRANSFER_DISCARD_RANGE) &&
 114                             prsc->last_level == 0 &&
 115                             prsc->width0 == box->width &&
 116                             prsc->height0 == box->height &&
 117                             prsc->depth0 == box->depth) {
 118                                 vc4_resource_bo_alloc(rsc);
 119                                 if (prsc->bind & PIPE_BIND_VERTEX_BUFFER)
 120                                         vc4->dirty |= VC4_DIRTY_VTXBUF;
 121                         } else {
 122                                 vc4_flush(pctx);
 123                         }
 124                 }
 125         }
 126
 127         if (usage & PIPE_TRANSFER_WRITE)
 128                 rsc->writes++;
 129
 130         trans = util_slab_alloc(&vc4->transfer_pool);
 131         if (!trans)
 132                 return NULL;
 133
 134         /* XXX: Handle DONTBLOCK, DISCARD_RANGE, PERSISTENT, COHERENT. */
 135
 136         /* util_slab_alloc() doesn't zero: */
 137         memset(trans, 0, sizeof(*trans));
 138         ptrans = &trans->base;
 139
 140         pipe_resource_reference(&ptrans->resource, prsc);
 141         ptrans->level = level;
 142         ptrans->usage = usage;
 143         ptrans->box = *box;
 144
 145         /* Note that the current kernel implementation is synchronous, so no
 146          * need to do syncing stuff here yet.
 147          */
 148
 149         if (usage & PIPE_TRANSFER_UNSYNCHRONIZED)
 150                 buf = vc4_bo_map_unsynchronized(rsc->bo);
 151         else
 152                 buf = vc4_bo_map(rsc->bo);
 153         if (!buf) {
 154                 fprintf(stderr, "Failed to map bo\n");
 155                 goto fail;
 156         }
 157
 158         *pptrans = ptrans;
 159
 160         if (rsc->tiled) {
 161                 uint32_t utile_w = vc4_utile_width(rsc->cpp);
 162                 uint32_t utile_h = vc4_utile_height(rsc->cpp);
 163
 164                 /* No direct mappings of tiled, since we need to manually
 165                  * tile/untile.
 166                  */
 167                 if (usage & PIPE_TRANSFER_MAP_DIRECTLY)
 168                         return NULL;
 169
 170                 /* We need to align the box to utile boundaries, since that's
 171                  * what load/store operate on.
 172                  */
 173                 uint32_t orig_width = ptrans->box.width;
 174                 uint32_t orig_height = ptrans->box.height;
 175                 uint32_t box_start_x = ptrans->box.x & (utile_w - 1);
 176                 uint32_t box_start_y = ptrans->box.y & (utile_h - 1);
 177                 ptrans->box.width += box_start_x;
 178                 ptrans->box.x -= box_start_x;
 179                 ptrans->box.height += box_start_y;
 180                 ptrans->box.y -= box_start_y;
 181                 ptrans->box.width = align(ptrans->box.width, utile_w);
 182                 ptrans->box.height = align(ptrans->box.height, utile_h);
 183
 184                 ptrans->stride = ptrans->box.width * rsc->cpp;
 185                 ptrans->layer_stride = ptrans->stride;
 186
 187                 trans->map = malloc(ptrans->stride * ptrans->box.height);
 188                 if (usage & PIPE_TRANSFER_READ ||
 189                     ptrans->box.width != orig_width ||
 190                     ptrans->box.height != orig_height) {
 191                         vc4_load_tiled_image(trans->map, ptrans->stride,
 192                                              buf + slice->offset +
 193                                              box->z * rsc->cube_map_stride,
 194                                              slice->stride,
 195                                              slice->tiling, rsc->cpp,
 196                                              &ptrans->box);
 197                 }
 198                 return (trans->map +
 199                         box_start_x * rsc->cpp +
 200                         box_start_y * ptrans->stride);
 201         } else {
 202                 ptrans->stride = slice->stride;
 203                 ptrans->layer_stride = ptrans->stride;
 204
 205                 return buf + slice->offset +
 206                         box->y / util_format_get_blockheight(format) * ptrans->stride +
 207                         box->x / util_format_get_blockwidth(format) * rsc->cpp +
 208                         box->z * rsc->cube_map_stride;
 209         }
 210
 211
 212 fail:
 213         vc4_resource_transfer_unmap(pctx, ptrans);
 214         return NULL;
 215 }
 216
 217 static void
 218 vc4_resource_destroy(struct pipe_screen *pscreen,
 219                      struct pipe_resource *prsc)
 220 {
 221         struct vc4_resource *rsc = vc4_resource(prsc);
 222         pipe_resource_reference(&rsc->shadow_parent, NULL);
 223         vc4_bo_unreference(&rsc->bo);
 224         free(rsc);
 225 }
 226
 227 static boolean
 228 vc4_resource_get_handle(struct pipe_screen *pscreen,
 229                         struct pipe_resource *prsc,
 230                         struct winsys_handle *handle)
 231 {
 232         struct vc4_resource *rsc = vc4_resource(prsc);
 233
 234         return vc4_screen_bo_get_handle(pscreen, rsc->bo, rsc->slices[0].stride,
 235                                         handle);
 236 }
 237
 238 static const struct u_resource_vtbl vc4_resource_vtbl = {
 239         .resource_get_handle      = vc4_resource_get_handle,
 240         .resource_destroy         = vc4_resource_destroy,
 241         .transfer_map             = vc4_resource_transfer_map,
 242         .transfer_flush_region    = u_default_transfer_flush_region,
 243         .transfer_unmap           = vc4_resource_transfer_unmap,
 244         .transfer_inline_write    = u_default_transfer_inline_write,
 245 };
 246
 247 static void
 248 vc4_setup_slices(struct vc4_resource *rsc)
 249 {
 250         struct pipe_resource *prsc = &rsc->base.b;
 251         uint32_t width = prsc->width0;
 252         uint32_t height = prsc->height0;
 253         uint32_t pot_width = util_next_power_of_two(width);
 254         uint32_t pot_height = util_next_power_of_two(height);
 255         uint32_t offset = 0;
 256         uint32_t utile_w = vc4_utile_width(rsc->cpp);
 257         uint32_t utile_h = vc4_utile_height(rsc->cpp);
 258
 259         for (int i = prsc->last_level; i >= 0; i--) {
 260                 struct vc4_resource_slice *slice = &rsc->slices[i];
 261
 262                 uint32_t level_width, level_height;
 263                 if (i == 0) {
 264                         level_width = width;
 265                         level_height = height;
 266                 } else {
 267                         level_width = u_minify(pot_width, i);
 268                         level_height = u_minify(pot_height, i);
 269                 }
 270
 271                 if (!rsc->tiled) {
 272                         slice->tiling = VC4_TILING_FORMAT_LINEAR;
 273                         level_width = align(level_width, utile_w);
 274                 } else {
 275                         if (vc4_size_is_lt(level_width, level_height,
 276                                            rsc->cpp)) {
 277                                 slice->tiling = VC4_TILING_FORMAT_LT;
 278                                 level_width = align(level_width, utile_w);
 279                                 level_height = align(level_height, utile_h);
 280                         } else {
 281                                 slice->tiling = VC4_TILING_FORMAT_T;
 282                                 level_width = align(level_width,
 283                                                     4 * 2 * utile_w);
 284                                 level_height = align(level_height,
 285                                                      4 * 2 * utile_h);
 286                         }
 287                 }
 288
 289                 slice->offset = offset;
 290                 slice->stride = level_width * rsc->cpp;
 291                 slice->size = level_height * slice->stride;
 292
 293                 offset += slice->size;
 294
 295                 if (miptree_debug) {
 296                         static const char tiling_chars[] = {
 297                                 [VC4_TILING_FORMAT_LINEAR] = 'R',
 298                                 [VC4_TILING_FORMAT_LT] = 'L',
 299                                 [VC4_TILING_FORMAT_T] = 'T'
 300                         };
 301                         fprintf(stderr,
 302                                 "rsc setup %p (format %d), %dx%d: "
 303                                 "level %d (%c) -> %dx%d, stride %d@0x%08x\n",
 304                                 rsc, rsc->vc4_format,
 305                                 prsc->width0, prsc->height0,
 306                                 i, tiling_chars[slice->tiling],
 307                                 level_width, level_height,
 308                                 slice->stride, slice->offset);
 309                 }
 310         }
 311
 312         /* The texture base pointer that has to point to level 0 doesn't have
 313          * intra-page bits, so we have to align it, and thus shift up all the
 314          * smaller slices.
 315          */
 316         uint32_t page_align_offset = (align(rsc->slices[0].offset, 4096) -
 317                                       rsc->slices[0].offset);
 318         if (page_align_offset) {
 319                 for (int i = 0; i <= prsc->last_level; i++)
 320                         rsc->slices[i].offset += page_align_offset;
 321         }
 322
 323         /* Cube map faces appear as whole miptrees at a page-aligned offset
 324          * from the first face's miptree.
 325          */
 326         if (prsc->target == PIPE_TEXTURE_CUBE) {
 327                 rsc->cube_map_stride = align(rsc->slices[0].offset +
 328                                              rsc->slices[0].size, 4096);
 329         }
 330 }
 331
 332 static struct vc4_resource *
 333 vc4_resource_setup(struct pipe_screen *pscreen,
 334                    const struct pipe_resource *tmpl)
 335 {
 336         struct vc4_resource *rsc = CALLOC_STRUCT(vc4_resource);
 337         if (!rsc)
 338                 return NULL;
 339         struct pipe_resource *prsc = &rsc->base.b;
 340
 341         *prsc = *tmpl;
 342
 343         pipe_reference_init(&prsc->reference, 1);
 344         prsc->screen = pscreen;
 345
 346         rsc->base.vtbl = &vc4_resource_vtbl;
 347         rsc->cpp = util_format_get_blocksize(tmpl->format);
 348
 349         assert(rsc->cpp);
 350
 351         return rsc;
 352 }
 353
 354 static enum vc4_texture_data_type
 355 get_resource_texture_format(struct pipe_resource *prsc)
 356 {
 357         struct vc4_resource *rsc = vc4_resource(prsc);
 358         uint8_t format = vc4_get_tex_format(prsc->format);
 359
 360         if (!rsc->tiled) {
 361                 assert(format == VC4_TEXTURE_TYPE_RGBA8888);
 362                 return VC4_TEXTURE_TYPE_RGBA32R;
 363         }
 364
 365         return format;
 366 }
 367
 368 struct pipe_resource *
 369 vc4_resource_create(struct pipe_screen *pscreen,
 370                     const struct pipe_resource *tmpl)
 371 {
 372         struct vc4_resource *rsc = vc4_resource_setup(pscreen, tmpl);
 373         struct pipe_resource *prsc = &rsc->base.b;
 374
 375         /* We have to make shared be untiled, since we don't have any way to
 376          * communicate metadata about tiling currently.
 377          */
 378         if (tmpl->target == PIPE_BUFFER ||
 379             (tmpl->bind & (PIPE_BIND_SCANOUT |
 380                            PIPE_BIND_LINEAR |
 381                            PIPE_BIND_SHARED |
 382                            PIPE_BIND_CURSOR))) {
 383                 rsc->tiled = false;
 384         } else {
 385                 rsc->tiled = true;
 386         }
 387
 388         if (tmpl->target != PIPE_BUFFER)
 389                 rsc->vc4_format = get_resource_texture_format(prsc);
 390
 391         vc4_setup_slices(rsc);
 392         vc4_resource_bo_alloc(rsc);
 393         if (!rsc->bo)
 394                 goto fail;
 395
 396         return prsc;
 397 fail:
 398         vc4_resource_destroy(pscreen, prsc);
 399         return NULL;
 400 }
 401
 402 static struct pipe_resource *
 403 vc4_resource_from_handle(struct pipe_screen *pscreen,
 404                          const struct pipe_resource *tmpl,
 405                          struct winsys_handle *handle)
 406 {
 407         struct vc4_resource *rsc = vc4_resource_setup(pscreen, tmpl);
 408         struct pipe_resource *prsc = &rsc->base.b;
 409         struct vc4_resource_slice *slice = &rsc->slices[0];
 410
 411         if (!rsc)
 412                 return NULL;
 413
 414         rsc->tiled = false;
 415         rsc->bo = vc4_screen_bo_from_handle(pscreen, handle);
 416         if (!rsc->bo)
 417                 goto fail;
 418
 419         if (!using_vc4_simulator)
 420                 slice->stride = handle->stride;
 421         else
 422                 slice->stride = align(prsc->width0 * rsc->cpp, 16);
 423
 424         slice->tiling = VC4_TILING_FORMAT_LINEAR;
 425
 426         rsc->vc4_format = get_resource_texture_format(prsc);
 427
 428         if (miptree_debug) {
 429                 fprintf(stderr,
 430                         "rsc import %p (format %d), %dx%d: "
 431                         "level 0 (R) -> stride %d@0x%08x\n",
 432                         rsc, rsc->vc4_format,
 433                         prsc->width0, prsc->height0,
 434                         slice->stride, slice->offset);
 435         }
 436
 437         return prsc;
 438
 439 fail:
 440         vc4_resource_destroy(pscreen, prsc);
 441         return NULL;
 442 }
 443
 444 static struct pipe_surface *
 445 vc4_create_surface(struct pipe_context *pctx,
 446                    struct pipe_resource *ptex,
 447                    const struct pipe_surface *surf_tmpl)
 448 {
 449         struct vc4_surface *surface = CALLOC_STRUCT(vc4_surface);
 450         struct vc4_resource *rsc = vc4_resource(ptex);
 451
 452         if (!surface)
 453                 return NULL;
 454
 455         assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 456
 457         struct pipe_surface *psurf = &surface->base;
 458         unsigned level = surf_tmpl->u.tex.level;
 459
 460         pipe_reference_init(&psurf->reference, 1);
 461         pipe_resource_reference(&psurf->texture, ptex);
 462
 463         psurf->context = pctx;
 464         psurf->format = surf_tmpl->format;
 465         psurf->width = u_minify(ptex->width0, level);
 466         psurf->height = u_minify(ptex->height0, level);
 467         psurf->u.tex.level = level;
 468         psurf->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 469         psurf->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 470         surface->offset = rsc->slices[level].offset;
 471         surface->tiling = rsc->slices[level].tiling;
 472
 473         return &surface->base;
 474 }
 475
 476 static void
 477 vc4_surface_destroy(struct pipe_context *pctx, struct pipe_surface *psurf)
 478 {
 479         pipe_resource_reference(&psurf->texture, NULL);
 480         FREE(psurf);
 481 }
 482
 483 /** Debug routine to dump the contents of an 8888 surface to the console */
 484 void
 485 vc4_dump_surface(struct pipe_surface *psurf)
 486 {
 487         if (!psurf)
 488                 return;
 489
 490         struct pipe_resource *prsc = psurf->texture;
 491         struct vc4_resource *rsc = vc4_resource(prsc);
 492         uint32_t *map = vc4_bo_map(rsc->bo);
 493         uint32_t stride = rsc->slices[0].stride / 4;
 494         uint32_t width = psurf->width;
 495         uint32_t height = psurf->height;
 496         uint32_t chunk_w = width / 79;
 497         uint32_t chunk_h = height / 40;
 498         uint32_t found_colors[10];
 499         uint32_t num_found_colors = 0;
 500
 501         if (rsc->vc4_format != VC4_TEXTURE_TYPE_RGBA32R) {
 502                 fprintf(stderr, "%s: Unsupported format %s\n",
 503                         __func__, util_format_short_name(psurf->format));
 504                 return;
 505         }
 506
 507         for (int by = 0; by < height; by += chunk_h) {
 508                 for (int bx = 0; bx < width; bx += chunk_w) {
 509                         int all_found_color = -1; /* nothing found */
 510
 511                         for (int y = by; y < MIN2(height, by + chunk_h); y++) {
 512                                 for (int x = bx; x < MIN2(width, bx + chunk_w); x++) {
 513                                         uint32_t pix = map[y * stride + x];
 514
 515                                         int i;
 516                                         for (i = 0; i < num_found_colors; i++) {
 517                                                 if (pix == found_colors[i])
 518                                                         break;
 519                                         }
 520                                         if (i == num_found_colors &&
 521                                             num_found_colors <
 522                                             ARRAY_SIZE(found_colors)) {
 523                                                 found_colors[num_found_colors++] = pix;
 524                                         }
 525
 526                                         if (i < num_found_colors) {
 527                                                 if (all_found_color == -1)
 528                                                         all_found_color = i;
 529                                                 else if (i != all_found_color)
 530                                                         all_found_color = ARRAY_SIZE(found_colors);
 531                                         }
 532                                 }
 533                         }
 534                         /* If all pixels for this chunk have a consistent
 535                          * value, then print a character for it.  Either a
 536                          * fixed name (particularly common for piglit tests),
 537                          * or a runtime-generated number.
 538                          */
 539                         if (all_found_color >= 0 &&
 540                             all_found_color < ARRAY_SIZE(found_colors)) {
 541                                 static const struct {
 542                                         uint32_t val;
 543                                         const char *c;
 544                                 } named_colors[] = {
 545                                         { 0xff000000, "█" },
 546                                         { 0x00000000, "█" },
 547                                         { 0xffff0000, "r" },
 548                                         { 0xff00ff00, "g" },
 549                                         { 0xff0000ff, "b" },
 550                                         { 0xffffffff, "w" },
 551                                 };
 552                                 int i;
 553                                 for (i = 0; i < ARRAY_SIZE(named_colors); i++) {
 554                                         if (named_colors[i].val ==
 555                                             found_colors[all_found_color]) {
 556                                                 fprintf(stderr, "%s",
 557                                                         named_colors[i].c);
 558                                                 break;
 559                                         }
 560                                 }
 561                                 /* For unnamed colors, print a number and the
 562                                  * numbers will have values printed at the
 563                                  * end.
 564                                  */
 565                                 if (i == ARRAY_SIZE(named_colors)) {
 566                                         fprintf(stderr, "%c",
 567                                                 '0' + all_found_color);
 568                                 }
 569                         } else {
 570                                 /* If there's no consistent color, print this.
 571                                  */
 572                                 fprintf(stderr, ".");
 573                         }
 574                 }
 575                 fprintf(stderr, "\n");
 576         }
 577
 578         for (int i = 0; i < num_found_colors; i++) {
 579                 fprintf(stderr, "color %d: 0x%08x\n", i, found_colors[i]);
 580         }
 581 }
 582
 583 static void
 584 vc4_flush_resource(struct pipe_context *pctx, struct pipe_resource *resource)
 585 {
 586         /* All calls to flush_resource are followed by a flush of the context,
 587          * so there's nothing to do.
 588          */
 589 }
 590
 591 void
 592 vc4_update_shadow_baselevel_texture(struct pipe_context *pctx,
 593                                     struct pipe_sampler_view *view)
 594 {
 595         struct vc4_resource *shadow = vc4_resource(view->texture);
 596         struct vc4_resource *orig = vc4_resource(shadow->shadow_parent);
 597         assert(orig);
 598
 599         if (shadow->writes == orig->writes && orig->bo->private)
 600                 return;
 601
 602         perf_debug("Updating shadow texture due to %s\n",
 603                    view->u.tex.first_level ? "base level" : "raster layout");
 604
 605         for (int i = 0; i <= shadow->base.b.last_level; i++) {
 606                 unsigned width = u_minify(shadow->base.b.width0, i);
 607                 unsigned height = u_minify(shadow->base.b.height0, i);
 608                 struct pipe_blit_info info = {
 609                         .dst = {
 610                                 .resource = &shadow->base.b,
 611                                 .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 = shadow->base.b.format,
 621                         },
 622                         .src = {
 623                                 .resource = &orig->base.b,
 624                                 .level = view->u.tex.first_level + i,
 625                                 .box = {
 626                                         .x = 0,
 627                                         .y = 0,
 628                                         .z = 0,
 629                                         .width = width,
 630                                         .height = height,
 631                                         .depth = 1,
 632                                 },
 633                                 .format = orig->base.b.format,
 634                         },
 635                         .mask = ~0,
 636                 };
 637                 pctx->blit(pctx, &info);
 638         }
 639
 640         shadow->writes = orig->writes;
 641 }
 642
 643 /**
 644  * Converts a 4-byte index buffer to 2 bytes.
 645  *
 646  * Since GLES2 only has support for 1 and 2-byte indices, the hardware doesn't
 647  * include 4-byte index support, and we have to shrink it down.
 648  *
 649  * There's no fallback support for when indices end up being larger than 2^16,
 650  * though it will at least assertion fail.  Also, if the original index data
 651  * was in user memory, it would be nice to not have uploaded it to a VBO
 652  * before translating.
 653  */
 654 struct pipe_resource *
 655 vc4_get_shadow_index_buffer(struct pipe_context *pctx,
 656                             const struct pipe_index_buffer *ib,
 657                             uint32_t count,
 658                             uint32_t *shadow_offset)
 659 {
 660         struct vc4_context *vc4 = vc4_context(pctx);
 661         struct vc4_resource *orig = vc4_resource(ib->buffer);
 662         perf_debug("Fallback conversion for %d uint indices\n", count);
 663
 664         void *data;
 665         struct pipe_resource *shadow_rsc = NULL;
 666         u_upload_alloc(vc4->uploader, 0, count * 2,
 667                        shadow_offset, &shadow_rsc, &data);
 668         uint16_t *dst = data;
 669
 670         struct pipe_transfer *src_transfer = NULL;
 671         const uint32_t *src;
 672         if (ib->user_buffer) {
 673                 src = ib->user_buffer;
 674         } else {
 675                 src = pipe_buffer_map_range(pctx, &orig->base.b,
 676                                             ib->offset,
 677                                             count * 4,
 678                                             PIPE_TRANSFER_READ, &src_transfer);
 679         }
 680
 681         for (int i = 0; i < count; i++) {
 682                 uint32_t src_index = src[i];
 683                 assert(src_index <= 0xffff);
 684                 dst[i] = src_index;
 685         }
 686
 687         if (src_transfer)
 688                 pctx->transfer_unmap(pctx, src_transfer);
 689
 690         return shadow_rsc;
 691 }
 692
 693 void
 694 vc4_resource_screen_init(struct pipe_screen *pscreen)
 695 {
 696         pscreen->resource_create = vc4_resource_create;
 697         pscreen->resource_from_handle = vc4_resource_from_handle;
 698         pscreen->resource_get_handle = u_resource_get_handle_vtbl;
 699         pscreen->resource_destroy = u_resource_destroy_vtbl;
 700 }
 701
 702 void
 703 vc4_resource_context_init(struct pipe_context *pctx)
 704 {
 705         pctx->transfer_map = u_transfer_map_vtbl;
 706         pctx->transfer_flush_region = u_transfer_flush_region_vtbl;
 707         pctx->transfer_unmap = u_transfer_unmap_vtbl;
 708         pctx->transfer_inline_write = u_transfer_inline_write_vtbl;
 709         pctx->create_surface = vc4_create_surface;
 710         pctx->surface_destroy = vc4_surface_destroy;
 711         pctx->resource_copy_region = util_resource_copy_region;
 712         pctx->blit = vc4_blit;
 713         pctx->flush_resource = vc4_flush_resource;
 714 }