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 bool
  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         struct vc4_bo *bo;
  44
  45         if (miptree_debug) {
  46                 fprintf(stderr, "alloc %p: size %d + offset %d -> %d\n",
  47                         rsc,
  48                         rsc->slices[0].size,
  49                         rsc->slices[0].offset,
  50                         rsc->slices[0].offset +
  51                         rsc->slices[0].size +
  52                         rsc->cube_map_stride * (prsc->array_size - 1));
  53         }
  54
  55         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         if (bo) {
  61                 vc4_bo_unreference(&rsc->bo);
  62                 rsc->bo = bo;
  63                 return true;
  64         } else {
  65                 return false;
  66         }
  67 }
  68
  69 static void
  70 vc4_resource_transfer_unmap(struct pipe_context *pctx,
  71                             struct pipe_transfer *ptrans)
  72 {
  73         struct vc4_context *vc4 = vc4_context(pctx);
  74         struct vc4_transfer *trans = vc4_transfer(ptrans);
  75         struct pipe_resource *prsc = ptrans->resource;
  76         struct vc4_resource *rsc = vc4_resource(prsc);
  77         struct vc4_resource_slice *slice = &rsc->slices[ptrans->level];
  78
  79         if (trans->map) {
  80                 if (ptrans->usage & PIPE_TRANSFER_WRITE) {
  81                         vc4_store_tiled_image(rsc->bo->map + slice->offset +
  82                                               ptrans->box.z * rsc->cube_map_stride,
  83                                               slice->stride,
  84                                               trans->map, ptrans->stride,
  85                                               slice->tiling, rsc->cpp,
  86                                               &ptrans->box);
  87                 }
  88                 free(trans->map);
  89         }
  90
  91         pipe_resource_reference(&ptrans->resource, NULL);
  92         util_slab_free(&vc4->transfer_pool, ptrans);
  93 }
  94
  95 static void *
  96 vc4_resource_transfer_map(struct pipe_context *pctx,
  97                           struct pipe_resource *prsc,
  98                           unsigned level, unsigned usage,
  99                           const struct pipe_box *box,
 100                           struct pipe_transfer **pptrans)
 101 {
 102         struct vc4_context *vc4 = vc4_context(pctx);
 103         struct vc4_resource *rsc = vc4_resource(prsc);
 104         struct vc4_resource_slice *slice = &rsc->slices[level];
 105         struct vc4_transfer *trans;
 106         struct pipe_transfer *ptrans;
 107         enum pipe_format format = prsc->format;
 108         char *buf;
 109
 110         if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE) {
 111                 if (vc4_resource_bo_alloc(rsc)) {
 112
 113                         /* If it might be bound as one of our vertex buffers,
 114                          * make sure we re-emit vertex buffer state.
 115                          */
 116                         if (prsc->bind & PIPE_BIND_VERTEX_BUFFER)
 117                                 vc4->dirty |= VC4_DIRTY_VTXBUF;
 118                 } else {
 119                         /* If we failed to reallocate, flush everything so
 120                          * that we don't violate any syncing requirements.
 121                          */
 122                         vc4_flush(pctx);
 123                 }
 124         } else if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
 125                 if (vc4_cl_references_bo(pctx, rsc->bo)) {
 126                         if ((usage & PIPE_TRANSFER_DISCARD_RANGE) &&
 127                             prsc->last_level == 0 &&
 128                             prsc->width0 == box->width &&
 129                             prsc->height0 == box->height &&
 130                             prsc->depth0 == box->depth &&
 131                             vc4_resource_bo_alloc(rsc)) {
 132                                 if (prsc->bind & PIPE_BIND_VERTEX_BUFFER)
 133                                         vc4->dirty |= VC4_DIRTY_VTXBUF;
 134                         } else {
 135                                 vc4_flush(pctx);
 136                         }
 137                 }
 138         }
 139
 140         if (usage & PIPE_TRANSFER_WRITE)
 141                 rsc->writes++;
 142
 143         trans = util_slab_alloc(&vc4->transfer_pool);
 144         if (!trans)
 145                 return NULL;
 146
 147         /* XXX: Handle DONTBLOCK, DISCARD_RANGE, PERSISTENT, COHERENT. */
 148
 149         /* util_slab_alloc() doesn't zero: */
 150         memset(trans, 0, sizeof(*trans));
 151         ptrans = &trans->base;
 152
 153         pipe_resource_reference(&ptrans->resource, prsc);
 154         ptrans->level = level;
 155         ptrans->usage = usage;
 156         ptrans->box = *box;
 157
 158         /* Note that the current kernel implementation is synchronous, so no
 159          * need to do syncing stuff here yet.
 160          */
 161
 162         if (usage & PIPE_TRANSFER_UNSYNCHRONIZED)
 163                 buf = vc4_bo_map_unsynchronized(rsc->bo);
 164         else
 165                 buf = vc4_bo_map(rsc->bo);
 166         if (!buf) {
 167                 fprintf(stderr, "Failed to map bo\n");
 168                 goto fail;
 169         }
 170
 171         *pptrans = ptrans;
 172
 173         if (rsc->tiled) {
 174                 uint32_t utile_w = vc4_utile_width(rsc->cpp);
 175                 uint32_t utile_h = vc4_utile_height(rsc->cpp);
 176
 177                 /* No direct mappings of tiled, since we need to manually
 178                  * tile/untile.
 179                  */
 180                 if (usage & PIPE_TRANSFER_MAP_DIRECTLY)
 181                         return NULL;
 182
 183                 /* We need to align the box to utile boundaries, since that's
 184                  * what load/store operate on.
 185                  */
 186                 uint32_t orig_width = ptrans->box.width;
 187                 uint32_t orig_height = ptrans->box.height;
 188                 uint32_t box_start_x = ptrans->box.x & (utile_w - 1);
 189                 uint32_t box_start_y = ptrans->box.y & (utile_h - 1);
 190                 ptrans->box.width += box_start_x;
 191                 ptrans->box.x -= box_start_x;
 192                 ptrans->box.height += box_start_y;
 193                 ptrans->box.y -= box_start_y;
 194                 ptrans->box.width = align(ptrans->box.width, utile_w);
 195                 ptrans->box.height = align(ptrans->box.height, utile_h);
 196
 197                 ptrans->stride = ptrans->box.width * rsc->cpp;
 198                 ptrans->layer_stride = ptrans->stride;
 199
 200                 trans->map = malloc(ptrans->stride * ptrans->box.height);
 201                 if (usage & PIPE_TRANSFER_READ ||
 202                     ptrans->box.width != orig_width ||
 203                     ptrans->box.height != orig_height) {
 204                         vc4_load_tiled_image(trans->map, ptrans->stride,
 205                                              buf + slice->offset +
 206                                              box->z * rsc->cube_map_stride,
 207                                              slice->stride,
 208                                              slice->tiling, rsc->cpp,
 209                                              &ptrans->box);
 210                 }
 211                 return (trans->map +
 212                         box_start_x * rsc->cpp +
 213                         box_start_y * ptrans->stride);
 214         } else {
 215                 ptrans->stride = slice->stride;
 216                 ptrans->layer_stride = ptrans->stride;
 217
 218                 return buf + slice->offset +
 219                         box->y / util_format_get_blockheight(format) * ptrans->stride +
 220                         box->x / util_format_get_blockwidth(format) * rsc->cpp +
 221                         box->z * rsc->cube_map_stride;
 222         }
 223
 224
 225 fail:
 226         vc4_resource_transfer_unmap(pctx, ptrans);
 227         return NULL;
 228 }
 229
 230 static void
 231 vc4_resource_destroy(struct pipe_screen *pscreen,
 232                      struct pipe_resource *prsc)
 233 {
 234         struct vc4_resource *rsc = vc4_resource(prsc);
 235         pipe_resource_reference(&rsc->shadow_parent, NULL);
 236         vc4_bo_unreference(&rsc->bo);
 237         free(rsc);
 238 }
 239
 240 static boolean
 241 vc4_resource_get_handle(struct pipe_screen *pscreen,
 242                         struct pipe_resource *prsc,
 243                         struct winsys_handle *handle)
 244 {
 245         struct vc4_resource *rsc = vc4_resource(prsc);
 246
 247         return vc4_screen_bo_get_handle(pscreen, rsc->bo, rsc->slices[0].stride,
 248                                         handle);
 249 }
 250
 251 static const struct u_resource_vtbl vc4_resource_vtbl = {
 252         .resource_get_handle      = vc4_resource_get_handle,
 253         .resource_destroy         = vc4_resource_destroy,
 254         .transfer_map             = vc4_resource_transfer_map,
 255         .transfer_flush_region    = u_default_transfer_flush_region,
 256         .transfer_unmap           = vc4_resource_transfer_unmap,
 257         .transfer_inline_write    = u_default_transfer_inline_write,
 258 };
 259
 260 static void
 261 vc4_setup_slices(struct vc4_resource *rsc)
 262 {
 263         struct pipe_resource *prsc = &rsc->base.b;
 264         uint32_t width = prsc->width0;
 265         uint32_t height = prsc->height0;
 266         uint32_t pot_width = util_next_power_of_two(width);
 267         uint32_t pot_height = util_next_power_of_two(height);
 268         uint32_t offset = 0;
 269         uint32_t utile_w = vc4_utile_width(rsc->cpp);
 270         uint32_t utile_h = vc4_utile_height(rsc->cpp);
 271
 272         for (int i = prsc->last_level; i >= 0; i--) {
 273                 struct vc4_resource_slice *slice = &rsc->slices[i];
 274
 275                 uint32_t level_width, level_height;
 276                 if (i == 0) {
 277                         level_width = width;
 278                         level_height = height;
 279                 } else {
 280                         level_width = u_minify(pot_width, i);
 281                         level_height = u_minify(pot_height, i);
 282                 }
 283
 284                 if (!rsc->tiled) {
 285                         slice->tiling = VC4_TILING_FORMAT_LINEAR;
 286                         level_width = align(level_width, utile_w);
 287                 } else {
 288                         if (vc4_size_is_lt(level_width, level_height,
 289                                            rsc->cpp)) {
 290                                 slice->tiling = VC4_TILING_FORMAT_LT;
 291                                 level_width = align(level_width, utile_w);
 292                                 level_height = align(level_height, utile_h);
 293                         } else {
 294                                 slice->tiling = VC4_TILING_FORMAT_T;
 295                                 level_width = align(level_width,
 296                                                     4 * 2 * utile_w);
 297                                 level_height = align(level_height,
 298                                                      4 * 2 * utile_h);
 299                         }
 300                 }
 301
 302                 slice->offset = offset;
 303                 slice->stride = level_width * rsc->cpp;
 304                 slice->size = level_height * slice->stride;
 305
 306                 offset += slice->size;
 307
 308                 if (miptree_debug) {
 309                         static const char tiling_chars[] = {
 310                                 [VC4_TILING_FORMAT_LINEAR] = 'R',
 311                                 [VC4_TILING_FORMAT_LT] = 'L',
 312                                 [VC4_TILING_FORMAT_T] = 'T'
 313                         };
 314                         fprintf(stderr,
 315                                 "rsc setup %p (format %d), %dx%d: "
 316                                 "level %d (%c) -> %dx%d, stride %d@0x%08x\n",
 317                                 rsc, rsc->vc4_format,
 318                                 prsc->width0, prsc->height0,
 319                                 i, tiling_chars[slice->tiling],
 320                                 level_width, level_height,
 321                                 slice->stride, slice->offset);
 322                 }
 323         }
 324
 325         /* The texture base pointer that has to point to level 0 doesn't have
 326          * intra-page bits, so we have to align it, and thus shift up all the
 327          * smaller slices.
 328          */
 329         uint32_t page_align_offset = (align(rsc->slices[0].offset, 4096) -
 330                                       rsc->slices[0].offset);
 331         if (page_align_offset) {
 332                 for (int i = 0; i <= prsc->last_level; i++)
 333                         rsc->slices[i].offset += page_align_offset;
 334         }
 335
 336         /* Cube map faces appear as whole miptrees at a page-aligned offset
 337          * from the first face's miptree.
 338          */
 339         if (prsc->target == PIPE_TEXTURE_CUBE) {
 340                 rsc->cube_map_stride = align(rsc->slices[0].offset +
 341                                              rsc->slices[0].size, 4096);
 342         }
 343 }
 344
 345 static struct vc4_resource *
 346 vc4_resource_setup(struct pipe_screen *pscreen,
 347                    const struct pipe_resource *tmpl)
 348 {
 349         struct vc4_resource *rsc = CALLOC_STRUCT(vc4_resource);
 350         if (!rsc)
 351                 return NULL;
 352         struct pipe_resource *prsc = &rsc->base.b;
 353
 354         *prsc = *tmpl;
 355
 356         pipe_reference_init(&prsc->reference, 1);
 357         prsc->screen = pscreen;
 358
 359         rsc->base.vtbl = &vc4_resource_vtbl;
 360         rsc->cpp = util_format_get_blocksize(tmpl->format);
 361
 362         assert(rsc->cpp);
 363
 364         return rsc;
 365 }
 366
 367 static enum vc4_texture_data_type
 368 get_resource_texture_format(struct pipe_resource *prsc)
 369 {
 370         struct vc4_resource *rsc = vc4_resource(prsc);
 371         uint8_t format = vc4_get_tex_format(prsc->format);
 372
 373         if (!rsc->tiled) {
 374                 assert(format == VC4_TEXTURE_TYPE_RGBA8888);
 375                 return VC4_TEXTURE_TYPE_RGBA32R;
 376         }
 377
 378         return format;
 379 }
 380
 381 struct pipe_resource *
 382 vc4_resource_create(struct pipe_screen *pscreen,
 383                     const struct pipe_resource *tmpl)
 384 {
 385         struct vc4_resource *rsc = vc4_resource_setup(pscreen, tmpl);
 386         struct pipe_resource *prsc = &rsc->base.b;
 387
 388         /* We have to make shared be untiled, since we don't have any way to
 389          * communicate metadata about tiling currently.
 390          */
 391         if (tmpl->target == PIPE_BUFFER ||
 392             (tmpl->bind & (PIPE_BIND_SCANOUT |
 393                            PIPE_BIND_LINEAR |
 394                            PIPE_BIND_SHARED |
 395                            PIPE_BIND_CURSOR))) {
 396                 rsc->tiled = false;
 397         } else {
 398                 rsc->tiled = true;
 399         }
 400
 401         if (tmpl->target != PIPE_BUFFER)
 402                 rsc->vc4_format = get_resource_texture_format(prsc);
 403
 404         vc4_setup_slices(rsc);
 405         if (!vc4_resource_bo_alloc(rsc))
 406                 goto fail;
 407
 408         return prsc;
 409 fail:
 410         vc4_resource_destroy(pscreen, prsc);
 411         return NULL;
 412 }
 413
 414 static struct pipe_resource *
 415 vc4_resource_from_handle(struct pipe_screen *pscreen,
 416                          const struct pipe_resource *tmpl,
 417                          struct winsys_handle *handle)
 418 {
 419         struct vc4_resource *rsc = vc4_resource_setup(pscreen, tmpl);
 420         struct pipe_resource *prsc = &rsc->base.b;
 421         struct vc4_resource_slice *slice = &rsc->slices[0];
 422
 423         if (!rsc)
 424                 return NULL;
 425
 426         rsc->tiled = false;
 427         rsc->bo = vc4_screen_bo_from_handle(pscreen, handle);
 428         if (!rsc->bo)
 429                 goto fail;
 430
 431         if (!using_vc4_simulator)
 432                 slice->stride = handle->stride;
 433         else
 434                 slice->stride = align(prsc->width0 * rsc->cpp, 16);
 435
 436         slice->tiling = VC4_TILING_FORMAT_LINEAR;
 437
 438         rsc->vc4_format = get_resource_texture_format(prsc);
 439
 440         if (miptree_debug) {
 441                 fprintf(stderr,
 442                         "rsc import %p (format %d), %dx%d: "
 443                         "level 0 (R) -> stride %d@0x%08x\n",
 444                         rsc, rsc->vc4_format,
 445                         prsc->width0, prsc->height0,
 446                         slice->stride, slice->offset);
 447         }
 448
 449         return prsc;
 450
 451 fail:
 452         vc4_resource_destroy(pscreen, prsc);
 453         return NULL;
 454 }
 455
 456 static struct pipe_surface *
 457 vc4_create_surface(struct pipe_context *pctx,
 458                    struct pipe_resource *ptex,
 459                    const struct pipe_surface *surf_tmpl)
 460 {
 461         struct vc4_surface *surface = CALLOC_STRUCT(vc4_surface);
 462         struct vc4_resource *rsc = vc4_resource(ptex);
 463
 464         if (!surface)
 465                 return NULL;
 466
 467         assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 468
 469         struct pipe_surface *psurf = &surface->base;
 470         unsigned level = surf_tmpl->u.tex.level;
 471
 472         pipe_reference_init(&psurf->reference, 1);
 473         pipe_resource_reference(&psurf->texture, ptex);
 474
 475         psurf->context = pctx;
 476         psurf->format = surf_tmpl->format;
 477         psurf->width = u_minify(ptex->width0, level);
 478         psurf->height = u_minify(ptex->height0, level);
 479         psurf->u.tex.level = level;
 480         psurf->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 481         psurf->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 482         surface->offset = rsc->slices[level].offset;
 483         surface->tiling = rsc->slices[level].tiling;
 484
 485         return &surface->base;
 486 }
 487
 488 static void
 489 vc4_surface_destroy(struct pipe_context *pctx, struct pipe_surface *psurf)
 490 {
 491         pipe_resource_reference(&psurf->texture, NULL);
 492         FREE(psurf);
 493 }
 494
 495 /** Debug routine to dump the contents of an 8888 surface to the console */
 496 void
 497 vc4_dump_surface(struct pipe_surface *psurf)
 498 {
 499         if (!psurf)
 500                 return;
 501
 502         struct pipe_resource *prsc = psurf->texture;
 503         struct vc4_resource *rsc = vc4_resource(prsc);
 504         uint32_t *map = vc4_bo_map(rsc->bo);
 505         uint32_t stride = rsc->slices[0].stride / 4;
 506         uint32_t width = psurf->width;
 507         uint32_t height = psurf->height;
 508         uint32_t chunk_w = width / 79;
 509         uint32_t chunk_h = height / 40;
 510         uint32_t found_colors[10];
 511         uint32_t num_found_colors = 0;
 512
 513         if (rsc->vc4_format != VC4_TEXTURE_TYPE_RGBA32R) {
 514                 fprintf(stderr, "%s: Unsupported format %s\n",
 515                         __func__, util_format_short_name(psurf->format));
 516                 return;
 517         }
 518
 519         for (int by = 0; by < height; by += chunk_h) {
 520                 for (int bx = 0; bx < width; bx += chunk_w) {
 521                         int all_found_color = -1; /* nothing found */
 522
 523                         for (int y = by; y < MIN2(height, by + chunk_h); y++) {
 524                                 for (int x = bx; x < MIN2(width, bx + chunk_w); x++) {
 525                                         uint32_t pix = map[y * stride + x];
 526
 527                                         int i;
 528                                         for (i = 0; i < num_found_colors; i++) {
 529                                                 if (pix == found_colors[i])
 530                                                         break;
 531                                         }
 532                                         if (i == num_found_colors &&
 533                                             num_found_colors <
 534                                             ARRAY_SIZE(found_colors)) {
 535                                                 found_colors[num_found_colors++] = pix;
 536                                         }
 537
 538                                         if (i < num_found_colors) {
 539                                                 if (all_found_color == -1)
 540                                                         all_found_color = i;
 541                                                 else if (i != all_found_color)
 542                                                         all_found_color = ARRAY_SIZE(found_colors);
 543                                         }
 544                                 }
 545                         }
 546                         /* If all pixels for this chunk have a consistent
 547                          * value, then print a character for it.  Either a
 548                          * fixed name (particularly common for piglit tests),
 549                          * or a runtime-generated number.
 550                          */
 551                         if (all_found_color >= 0 &&
 552                             all_found_color < ARRAY_SIZE(found_colors)) {
 553                                 static const struct {
 554                                         uint32_t val;
 555                                         const char *c;
 556                                 } named_colors[] = {
 557                                         { 0xff000000, "█" },
 558                                         { 0x00000000, "█" },
 559                                         { 0xffff0000, "r" },
 560                                         { 0xff00ff00, "g" },
 561                                         { 0xff0000ff, "b" },
 562                                         { 0xffffffff, "w" },
 563                                 };
 564                                 int i;
 565                                 for (i = 0; i < ARRAY_SIZE(named_colors); i++) {
 566                                         if (named_colors[i].val ==
 567                                             found_colors[all_found_color]) {
 568                                                 fprintf(stderr, "%s",
 569                                                         named_colors[i].c);
 570                                                 break;
 571                                         }
 572                                 }
 573                                 /* For unnamed colors, print a number and the
 574                                  * numbers will have values printed at the
 575                                  * end.
 576                                  */
 577                                 if (i == ARRAY_SIZE(named_colors)) {
 578                                         fprintf(stderr, "%c",
 579                                                 '0' + all_found_color);
 580                                 }
 581                         } else {
 582                                 /* If there's no consistent color, print this.
 583                                  */
 584                                 fprintf(stderr, ".");
 585                         }
 586                 }
 587                 fprintf(stderr, "\n");
 588         }
 589
 590         for (int i = 0; i < num_found_colors; i++) {
 591                 fprintf(stderr, "color %d: 0x%08x\n", i, found_colors[i]);
 592         }
 593 }
 594
 595 static void
 596 vc4_flush_resource(struct pipe_context *pctx, struct pipe_resource *resource)
 597 {
 598         /* All calls to flush_resource are followed by a flush of the context,
 599          * so there's nothing to do.
 600          */
 601 }
 602
 603 void
 604 vc4_update_shadow_baselevel_texture(struct pipe_context *pctx,
 605                                     struct pipe_sampler_view *view)
 606 {
 607         struct vc4_resource *shadow = vc4_resource(view->texture);
 608         struct vc4_resource *orig = vc4_resource(shadow->shadow_parent);
 609         assert(orig);
 610
 611         if (shadow->writes == orig->writes && orig->bo->private)
 612                 return;
 613
 614         perf_debug("Updating shadow texture due to %s\n",
 615                    view->u.tex.first_level ? "base level" : "raster layout");
 616
 617         for (int i = 0; i <= shadow->base.b.last_level; i++) {
 618                 unsigned width = u_minify(shadow->base.b.width0, i);
 619                 unsigned height = u_minify(shadow->base.b.height0, i);
 620                 struct pipe_blit_info info = {
 621                         .dst = {
 622                                 .resource = &shadow->base.b,
 623                                 .level = i,
 624                                 .box = {
 625                                         .x = 0,
 626                                         .y = 0,
 627                                         .z = 0,
 628                                         .width = width,
 629                                         .height = height,
 630                                         .depth = 1,
 631                                 },
 632                                 .format = shadow->base.b.format,
 633                         },
 634                         .src = {
 635                                 .resource = &orig->base.b,
 636                                 .level = view->u.tex.first_level + i,
 637                                 .box = {
 638                                         .x = 0,
 639                                         .y = 0,
 640                                         .z = 0,
 641                                         .width = width,
 642                                         .height = height,
 643                                         .depth = 1,
 644                                 },
 645                                 .format = orig->base.b.format,
 646                         },
 647                         .mask = ~0,
 648                 };
 649                 pctx->blit(pctx, &info);
 650         }
 651
 652         shadow->writes = orig->writes;
 653 }
 654
 655 /**
 656  * Converts a 4-byte index buffer to 2 bytes.
 657  *
 658  * Since GLES2 only has support for 1 and 2-byte indices, the hardware doesn't
 659  * include 4-byte index support, and we have to shrink it down.
 660  *
 661  * There's no fallback support for when indices end up being larger than 2^16,
 662  * though it will at least assertion fail.  Also, if the original index data
 663  * was in user memory, it would be nice to not have uploaded it to a VBO
 664  * before translating.
 665  */
 666 struct pipe_resource *
 667 vc4_get_shadow_index_buffer(struct pipe_context *pctx,
 668                             const struct pipe_index_buffer *ib,
 669                             uint32_t count,
 670                             uint32_t *shadow_offset)
 671 {
 672         struct vc4_context *vc4 = vc4_context(pctx);
 673         struct vc4_resource *orig = vc4_resource(ib->buffer);
 674         perf_debug("Fallback conversion for %d uint indices\n", count);
 675
 676         void *data;
 677         struct pipe_resource *shadow_rsc = NULL;
 678         u_upload_alloc(vc4->uploader, 0, count * 2,
 679                        shadow_offset, &shadow_rsc, &data);
 680         uint16_t *dst = data;
 681
 682         struct pipe_transfer *src_transfer = NULL;
 683         const uint32_t *src;
 684         if (ib->user_buffer) {
 685                 src = ib->user_buffer;
 686         } else {
 687                 src = pipe_buffer_map_range(pctx, &orig->base.b,
 688                                             ib->offset,
 689                                             count * 4,
 690                                             PIPE_TRANSFER_READ, &src_transfer);
 691         }
 692
 693         for (int i = 0; i < count; i++) {
 694                 uint32_t src_index = src[i];
 695                 assert(src_index <= 0xffff);
 696                 dst[i] = src_index;
 697         }
 698
 699         if (src_transfer)
 700                 pctx->transfer_unmap(pctx, src_transfer);
 701
 702         return shadow_rsc;
 703 }
 704
 705 void
 706 vc4_resource_screen_init(struct pipe_screen *pscreen)
 707 {
 708         pscreen->resource_create = vc4_resource_create;
 709         pscreen->resource_from_handle = vc4_resource_from_handle;
 710         pscreen->resource_get_handle = u_resource_get_handle_vtbl;
 711         pscreen->resource_destroy = u_resource_destroy_vtbl;
 712 }
 713
 714 void
 715 vc4_resource_context_init(struct pipe_context *pctx)
 716 {
 717         pctx->transfer_map = u_transfer_map_vtbl;
 718         pctx->transfer_flush_region = u_transfer_flush_region_vtbl;
 719         pctx->transfer_unmap = u_transfer_unmap_vtbl;
 720         pctx->transfer_inline_write = u_transfer_inline_write_vtbl;
 721         pctx->create_surface = vc4_create_surface;
 722         pctx->surface_destroy = vc4_surface_destroy;
 723         pctx->resource_copy_region = util_resource_copy_region;
 724         pctx->blit = vc4_blit;
 725         pctx->flush_resource = vc4_flush_resource;
 726 }