src/gallium/drivers/panfrost/pan_resource.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 VMware, Inc.
   4  * Copyright 2014 Broadcom
   5  * Copyright 2018 Alyssa Rosenzweig
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the
  10  * "Software"), to deal in the Software without restriction, including
  11  * without limitation the rights to use, copy, modify, merge, publish,
  12  * distribute, sub license, and/or sell copies of the Software, and to
  13  * permit persons to whom the Software is furnished to do so, subject to
  14  * the following conditions:
  15  *
  16  * The above copyright notice and this permission notice (including the
  17  * next paragraph) shall be included in all copies or substantial portions
  18  * of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  21  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  23  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  24  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  25  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  26  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27  *
  28  **************************************************************************/
  29
  30 #include <xf86drm.h>
  31 #include <fcntl.h>
  32 #include "drm-uapi/drm_fourcc.h"
  33
  34 #include "state_tracker/winsys_handle.h"
  35 #include "util/u_format.h"
  36 #include "util/u_memory.h"
  37 #include "util/u_surface.h"
  38 #include "util/u_transfer.h"
  39 #include "util/u_transfer_helper.h"
  40
  41 #include "pan_context.h"
  42 #include "pan_screen.h"
  43 #include "pan_resource.h"
  44 #include "pan_swizzle.h"
  45 #include "pan_util.h"
  46
  47 static struct pipe_resource *
  48 panfrost_resource_from_handle(struct pipe_screen *pscreen,
  49                               const struct pipe_resource *templat,
  50                               struct winsys_handle *whandle,
  51                               unsigned usage)
  52 {
  53         struct panfrost_screen *screen = pan_screen(pscreen);
  54         struct panfrost_resource *rsc;
  55         struct pipe_resource *prsc;
  56
  57         assert(whandle->type == WINSYS_HANDLE_TYPE_FD);
  58
  59         rsc = CALLOC_STRUCT(panfrost_resource);
  60         if (!rsc)
  61                 return NULL;
  62
  63         prsc = &rsc->base;
  64
  65         *prsc = *templat;
  66
  67         pipe_reference_init(&prsc->reference, 1);
  68         prsc->screen = pscreen;
  69
  70         rsc->bo = screen->driver->import_bo(screen, whandle);
  71         rsc->bo->slices[0].stride = whandle->stride;
  72
  73         if (screen->ro) {
  74                 rsc->scanout =
  75                         renderonly_create_gpu_import_for_resource(prsc, screen->ro, NULL);
  76                 /* failure is expected in some cases.. */
  77         }
  78
  79         return prsc;
  80 }
  81
  82 static boolean
  83 panfrost_resource_get_handle(struct pipe_screen *pscreen,
  84                              struct pipe_context *ctx,
  85                              struct pipe_resource *pt,
  86                              struct winsys_handle *handle,
  87                              unsigned usage)
  88 {
  89         struct panfrost_screen *screen = pan_screen(pscreen);
  90         struct panfrost_resource *rsrc = (struct panfrost_resource *) pt;
  91         struct renderonly_scanout *scanout = rsrc->scanout;
  92
  93         handle->modifier = DRM_FORMAT_MOD_INVALID;
  94
  95         if (handle->type == WINSYS_HANDLE_TYPE_SHARED) {
  96                 return FALSE;
  97         } else if (handle->type == WINSYS_HANDLE_TYPE_KMS) {
  98                 if (renderonly_get_handle(scanout, handle))
  99                         return TRUE;
 100
 101                 handle->handle = rsrc->bo->gem_handle;
 102                 handle->stride = rsrc->bo->slices[0].stride;
 103                 return TRUE;
 104         } else if (handle->type == WINSYS_HANDLE_TYPE_FD) {
 105                 if (scanout) {
 106                         struct drm_prime_handle args = {
 107                                 .handle = scanout->handle,
 108                                 .flags = DRM_CLOEXEC,
 109                         };
 110
 111                         int ret = drmIoctl(screen->ro->kms_fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
 112                         if (ret == -1)
 113                                 return FALSE;
 114
 115                         handle->stride = scanout->stride;
 116                         handle->handle = args.fd;
 117
 118                         return TRUE;
 119                 } else
 120                         return screen->driver->export_bo(screen, rsrc->bo->gem_handle, rsrc->bo->slices[0].stride, handle);
 121         }
 122
 123         return FALSE;
 124 }
 125
 126 static void
 127 panfrost_flush_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
 128 {
 129         //DBG("TODO %s\n", __func__);
 130 }
 131
 132 static void
 133 panfrost_blit(struct pipe_context *pipe,
 134               const struct pipe_blit_info *info)
 135 {
 136         if (util_try_blit_via_copy_region(pipe, info))
 137                 return;
 138
 139         /* TODO */
 140         DBG("Unhandled blit.\n");
 141
 142         return;
 143 }
 144
 145 static struct pipe_surface *
 146 panfrost_create_surface(struct pipe_context *pipe,
 147                         struct pipe_resource *pt,
 148                         const struct pipe_surface *surf_tmpl)
 149 {
 150         struct pipe_surface *ps = NULL;
 151
 152         ps = CALLOC_STRUCT(pipe_surface);
 153
 154         if (ps) {
 155                 pipe_reference_init(&ps->reference, 1);
 156                 pipe_resource_reference(&ps->texture, pt);
 157                 ps->context = pipe;
 158                 ps->format = surf_tmpl->format;
 159
 160                 if (pt->target != PIPE_BUFFER) {
 161                         assert(surf_tmpl->u.tex.level <= pt->last_level);
 162                         ps->width = u_minify(pt->width0, surf_tmpl->u.tex.level);
 163                         ps->height = u_minify(pt->height0, surf_tmpl->u.tex.level);
 164                         ps->u.tex.level = surf_tmpl->u.tex.level;
 165                         ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 166                         ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 167                 } else {
 168                         /* setting width as number of elements should get us correct renderbuffer width */
 169                         ps->width = surf_tmpl->u.buf.last_element - surf_tmpl->u.buf.first_element + 1;
 170                         ps->height = pt->height0;
 171                         ps->u.buf.first_element = surf_tmpl->u.buf.first_element;
 172                         ps->u.buf.last_element = surf_tmpl->u.buf.last_element;
 173                         assert(ps->u.buf.first_element <= ps->u.buf.last_element);
 174                         assert(ps->u.buf.last_element < ps->width);
 175                 }
 176         }
 177
 178         return ps;
 179 }
 180
 181 static void
 182 panfrost_surface_destroy(struct pipe_context *pipe,
 183                          struct pipe_surface *surf)
 184 {
 185         assert(surf->texture);
 186         pipe_resource_reference(&surf->texture, NULL);
 187         free(surf);
 188 }
 189
 190 static void
 191 panfrost_setup_slices(const struct pipe_resource *tmpl, struct panfrost_bo *bo)
 192 {
 193         unsigned width = tmpl->width0;
 194         unsigned height = tmpl->height0;
 195         unsigned bytes_per_pixel = util_format_get_blocksize(tmpl->format);
 196
 197         unsigned offset = 0;
 198
 199         for (unsigned l = 0; l <= tmpl->last_level; ++l) {
 200                 struct panfrost_slice *slice = &bo->slices[l];
 201
 202                 unsigned effective_width = width;
 203                 unsigned effective_height = height;
 204
 205                 /* Tiled operates blockwise; linear is packed */
 206
 207                 if (bo->layout == PAN_TILED) {
 208                         effective_width = ALIGN(effective_width, 16);
 209                         effective_height = ALIGN(effective_height, 16);
 210                 }
 211
 212                 slice->offset = offset;
 213                 slice->stride = bytes_per_pixel * effective_width;
 214
 215                 offset += slice->stride * effective_height;
 216
 217                 width = u_minify(width, 1);
 218                 height = u_minify(height, 1);
 219         }
 220
 221         assert(tmpl->array_size);
 222
 223         bo->cubemap_stride = ALIGN(offset, 64);
 224         bo->size = ALIGN(bo->cubemap_stride * tmpl->array_size, 4096);
 225 }
 226
 227 static struct panfrost_bo *
 228 panfrost_create_bo(struct panfrost_screen *screen, const struct pipe_resource *template)
 229 {
 230         struct panfrost_bo *bo = CALLOC_STRUCT(panfrost_bo);
 231
 232         /* Based on the usage, figure out what storing will be used. There are
 233          * various tradeoffs:
 234          *
 235          * Linear: the basic format, bad for memory bandwidth, bad for cache
 236          * use. Zero-copy, though. Renderable.
 237          *
 238          * Tiled: Not compressed, but cache-optimized. Expensive to write into
 239          * (due to software tiling), but cheap to sample from. Ideal for most
 240          * textures.
 241          *
 242          * AFBC: Compressed and renderable (so always desirable for non-scanout
 243          * rendertargets). Cheap to sample from. The format is black box, so we
 244          * can't read/write from software.
 245          */
 246
 247         /* Tiling textures is almost always faster, unless we only use it once */
 248         bool should_tile = (template->usage != PIPE_USAGE_STREAM) && (template->bind & PIPE_BIND_SAMPLER_VIEW);
 249
 250         /* For unclear reasons, depth/stencil is faster linear than AFBC, so
 251          * make sure it's linear */
 252
 253         if (template->bind & PIPE_BIND_DEPTH_STENCIL)
 254                 should_tile = false;
 255
 256         /* Set the layout appropriately */
 257         bo->layout = should_tile ? PAN_TILED : PAN_LINEAR;
 258
 259         panfrost_setup_slices(template, bo);
 260
 261         if (bo->layout == PAN_TILED || bo->layout == PAN_LINEAR) {
 262                 struct panfrost_memory mem;
 263
 264                 screen->driver->allocate_slab(screen, &mem, bo->size / 4096, true, 0, 0, 0);
 265
 266                 bo->cpu = mem.cpu;
 267                 bo->gpu = mem.gpu;
 268                 bo->gem_handle = mem.gem_handle;
 269         }
 270
 271         return bo;
 272 }
 273
 274 static struct pipe_resource *
 275 panfrost_resource_create(struct pipe_screen *screen,
 276                          const struct pipe_resource *template)
 277 {
 278         struct panfrost_resource *so = CALLOC_STRUCT(panfrost_resource);
 279         struct panfrost_screen *pscreen = (struct panfrost_screen *) screen;
 280
 281         so->base = *template;
 282         so->base.screen = screen;
 283
 284         pipe_reference_init(&so->base.reference, 1);
 285
 286         /* Make sure we're familiar */
 287         switch (template->target) {
 288                 case PIPE_BUFFER:
 289                 case PIPE_TEXTURE_1D:
 290                 case PIPE_TEXTURE_2D:
 291                 case PIPE_TEXTURE_3D:
 292                 case PIPE_TEXTURE_CUBE:
 293                 case PIPE_TEXTURE_RECT:
 294                         break;
 295                 default:
 296                         DBG("Unknown texture target %d\n", template->target);
 297                         assert(0);
 298         }
 299
 300         if (template->bind & PIPE_BIND_DISPLAY_TARGET ||
 301             template->bind & PIPE_BIND_SCANOUT ||
 302             template->bind & PIPE_BIND_SHARED) {
 303                 struct pipe_resource scanout_templat = *template;
 304                 struct renderonly_scanout *scanout;
 305                 struct winsys_handle handle;
 306
 307                 scanout = renderonly_scanout_for_resource(&scanout_templat,
 308                                                           pscreen->ro, &handle);
 309                 if (!scanout)
 310                         return NULL;
 311
 312                 assert(handle.type == WINSYS_HANDLE_TYPE_FD);
 313                 /* TODO: handle modifiers? */
 314                 so = pan_resource(screen->resource_from_handle(screen, template,
 315                                                                  &handle,
 316                                                                  PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE));
 317                 close(handle.handle);
 318                 if (!so)
 319                         return NULL;
 320
 321                 so->scanout = scanout;
 322                 pscreen->display_target = so;
 323         } else {
 324                 so->bo = panfrost_create_bo(pscreen, template);
 325         }
 326
 327         return (struct pipe_resource *)so;
 328 }
 329
 330 static void
 331 panfrost_destroy_bo(struct panfrost_screen *screen, struct panfrost_bo *pbo)
 332 {
 333         struct panfrost_bo *bo = (struct panfrost_bo *)pbo;
 334
 335         if ((bo->layout == PAN_LINEAR || bo->layout == PAN_TILED) &&
 336                         !bo->imported) {
 337                 struct panfrost_memory mem = {
 338                         .cpu = bo->cpu,
 339                         .gpu = bo->gpu,
 340                         .size = bo->size,
 341                         .gem_handle = bo->gem_handle,
 342                 };
 343
 344                 screen->driver->free_slab(screen, &mem);
 345         }
 346
 347         if (bo->layout == PAN_AFBC) {
 348                 /* TODO */
 349                 DBG("--leaking afbc (%d bytes)--\n", bo->afbc_metadata_size);
 350         }
 351
 352         if (bo->has_checksum) {
 353                 /* TODO */
 354                 DBG("--leaking checksum (%zd bytes)--\n", bo->checksum_slab.size);
 355         }
 356
 357         if (bo->imported) {
 358                 screen->driver->free_imported_bo(screen, bo);
 359         }
 360 }
 361
 362 static void
 363 panfrost_resource_destroy(struct pipe_screen *screen,
 364                           struct pipe_resource *pt)
 365 {
 366         struct panfrost_screen *pscreen = pan_screen(screen);
 367         struct panfrost_resource *rsrc = (struct panfrost_resource *) pt;
 368
 369         if (rsrc->scanout)
 370                 renderonly_scanout_destroy(rsrc->scanout, pscreen->ro);
 371
 372         if (rsrc->bo)
 373                 panfrost_destroy_bo(pscreen, rsrc->bo);
 374
 375         FREE(rsrc);
 376 }
 377
 378 static void *
 379 panfrost_transfer_map(struct pipe_context *pctx,
 380                       struct pipe_resource *resource,
 381                       unsigned level,
 382                       unsigned usage,  /* a combination of PIPE_TRANSFER_x */
 383                       const struct pipe_box *box,
 384                       struct pipe_transfer **out_transfer)
 385 {
 386         int bytes_per_pixel = util_format_get_blocksize(resource->format);
 387         struct panfrost_bo *bo = pan_resource(resource)->bo;
 388
 389         struct panfrost_gtransfer *transfer = CALLOC_STRUCT(panfrost_gtransfer);
 390         transfer->base.level = level;
 391         transfer->base.usage = usage;
 392         transfer->base.box = *box;
 393
 394         pipe_resource_reference(&transfer->base.resource, resource);
 395
 396         *out_transfer = &transfer->base;
 397
 398         if (resource->bind & PIPE_BIND_DISPLAY_TARGET ||
 399             resource->bind & PIPE_BIND_SCANOUT ||
 400             resource->bind & PIPE_BIND_SHARED) {
 401                 /* Mipmapped readpixels?! */
 402                 assert(level == 0);
 403
 404                 /* Force a flush -- kill the pipeline */
 405                 panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
 406         }
 407
 408         if (bo->layout != PAN_LINEAR) {
 409                 /* Non-linear resources need to be indirectly mapped */
 410
 411                 if (usage & PIPE_TRANSFER_MAP_DIRECTLY)
 412                         return NULL;
 413
 414                 transfer->base.stride = box->width * bytes_per_pixel;
 415                 transfer->base.layer_stride = transfer->base.stride * box->height;
 416
 417                 /* TODO: Reads */
 418                 transfer->map = malloc(transfer->base.layer_stride * box->depth);
 419
 420                 return transfer->map;
 421         } else {
 422                 transfer->base.stride = bo->slices[level].stride;
 423                 transfer->base.layer_stride = bo->cubemap_stride;
 424
 425                 return bo->cpu
 426                         + bo->slices[level].offset
 427                         + transfer->base.box.z * bo->cubemap_stride
 428                         + transfer->base.box.y * bo->slices[level].stride
 429                         + transfer->base.box.x * bytes_per_pixel;
 430         }
 431 }
 432
 433 static void
 434 panfrost_tile_texture(struct panfrost_screen *screen, struct panfrost_resource *rsrc, struct panfrost_gtransfer *trans)
 435 {
 436         struct panfrost_bo *bo = (struct panfrost_bo *)rsrc->bo;
 437
 438         unsigned level = trans->base.level;
 439
 440         panfrost_texture_swizzle(
 441                         trans->base.box.x,
 442                         trans->base.box.y,
 443                         trans->base.box.width,
 444                         trans->base.box.height,
 445                         util_format_get_blocksize(rsrc->base.format),
 446                         u_minify(rsrc->base.width0, level),
 447                         trans->map,
 448                         bo->cpu
 449                                 + bo->slices[level].offset
 450                                 + bo->cubemap_stride * trans->base.box.z
 451                         );
 452 }
 453
 454 static void
 455 panfrost_transfer_unmap(struct pipe_context *pctx,
 456                         struct pipe_transfer *transfer)
 457 {
 458         struct panfrost_context *ctx = pan_context(pctx);
 459
 460         /* Gallium expects writeback here, so we tile */
 461
 462         struct panfrost_gtransfer *trans = pan_transfer(transfer);
 463
 464         if (trans->map) {
 465                 struct panfrost_resource *prsrc = (struct panfrost_resource *) transfer->resource;
 466                 struct panfrost_bo *bo = prsrc->bo;
 467
 468                 if (transfer->usage & PIPE_TRANSFER_WRITE) {
 469
 470                         if (bo->layout == PAN_AFBC) {
 471                                 DBG("Unimplemented: writes to AFBC\n");
 472                         } else if (bo->layout == PAN_TILED) {
 473                                 struct pipe_context *gallium = (struct pipe_context *) ctx;
 474                                 struct panfrost_screen *screen = pan_screen(gallium->screen);
 475                                 assert(transfer->box.depth == 1);
 476                                 panfrost_tile_texture(screen, prsrc, trans);
 477                         }
 478                 }
 479
 480                 free(trans->map);
 481         }
 482
 483         /* Derefence the resource */
 484         pipe_resource_reference(&transfer->resource, NULL);
 485
 486         /* Transfer itself is CALLOCed at the moment */
 487         free(transfer);
 488 }
 489
 490 static struct pb_slab *
 491 panfrost_slab_alloc(void *priv, unsigned heap, unsigned entry_size, unsigned group_index)
 492 {
 493         struct panfrost_screen *screen = (struct panfrost_screen *) priv;
 494         struct panfrost_memory *mem = CALLOC_STRUCT(panfrost_memory);
 495
 496         size_t slab_size = (1 << (MAX_SLAB_ENTRY_SIZE + 1));
 497
 498         mem->slab.num_entries = slab_size / entry_size;
 499         mem->slab.num_free = mem->slab.num_entries;
 500
 501         LIST_INITHEAD(&mem->slab.free);
 502         for (unsigned i = 0; i < mem->slab.num_entries; ++i) {
 503                 /* Create a slab entry */
 504                 struct panfrost_memory_entry *entry = CALLOC_STRUCT(panfrost_memory_entry);
 505                 entry->offset = entry_size * i;
 506
 507                 entry->base.slab = &mem->slab;
 508                 entry->base.group_index = group_index;
 509
 510                 LIST_ADDTAIL(&entry->base.head, &mem->slab.free);
 511         }
 512
 513         /* Actually allocate the memory from kernel-space. Mapped, same_va, no
 514          * special flags */
 515
 516         screen->driver->allocate_slab(screen, mem, slab_size / 4096, true, 0, 0, 0);
 517
 518         return &mem->slab;
 519 }
 520
 521 static bool
 522 panfrost_slab_can_reclaim(void *priv, struct pb_slab_entry *entry)
 523 {
 524         struct panfrost_memory_entry *p_entry = (struct panfrost_memory_entry *) entry;
 525         return p_entry->freed;
 526 }
 527
 528 static void
 529 panfrost_slab_free(void *priv, struct pb_slab *slab)
 530 {
 531         struct panfrost_memory *mem = (struct panfrost_memory *) slab;
 532         struct panfrost_screen *screen = (struct panfrost_screen *) priv;
 533
 534         screen->driver->free_slab(screen, mem);
 535 }
 536
 537 static void
 538 panfrost_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
 539 {
 540         //DBG("TODO %s\n", __func__);
 541 }
 542
 543 static enum pipe_format
 544 panfrost_resource_get_internal_format(struct pipe_resource *prsrc)
 545 {
 546         return prsrc->format;
 547 }
 548
 549 static void
 550 panfrost_resource_set_stencil(struct pipe_resource *prsrc,
 551                               struct pipe_resource *stencil)
 552 {
 553         pan_resource(prsrc)->separate_stencil = pan_resource(stencil);
 554 }
 555
 556 static struct pipe_resource *
 557 panfrost_resource_get_stencil(struct pipe_resource *prsrc)
 558 {
 559         return &pan_resource(prsrc)->separate_stencil->base;
 560 }
 561
 562 static const struct u_transfer_vtbl transfer_vtbl = {
 563         .resource_create          = panfrost_resource_create,
 564         .resource_destroy         = panfrost_resource_destroy,
 565         .transfer_map             = panfrost_transfer_map,
 566         .transfer_unmap           = panfrost_transfer_unmap,
 567         .transfer_flush_region    = u_default_transfer_flush_region,
 568         .get_internal_format      = panfrost_resource_get_internal_format,
 569         .set_stencil              = panfrost_resource_set_stencil,
 570         .get_stencil              = panfrost_resource_get_stencil,
 571 };
 572
 573 void
 574 panfrost_resource_screen_init(struct panfrost_screen *pscreen)
 575 {
 576         //pscreen->base.resource_create_with_modifiers =
 577         //        panfrost_resource_create_with_modifiers;
 578         pscreen->base.resource_create = u_transfer_helper_resource_create;
 579         pscreen->base.resource_destroy = u_transfer_helper_resource_destroy;
 580         pscreen->base.resource_from_handle = panfrost_resource_from_handle;
 581         pscreen->base.resource_get_handle = panfrost_resource_get_handle;
 582         pscreen->base.transfer_helper = u_transfer_helper_create(&transfer_vtbl,
 583                                                             true, false,
 584                                                             true, true);
 585
 586         pb_slabs_init(&pscreen->slabs,
 587                         MIN_SLAB_ENTRY_SIZE,
 588                         MAX_SLAB_ENTRY_SIZE,
 589
 590                         3, /* Number of heaps */
 591
 592                         pscreen,
 593
 594                         panfrost_slab_can_reclaim,
 595                         panfrost_slab_alloc,
 596                         panfrost_slab_free);
 597 }
 598
 599 void
 600 panfrost_resource_context_init(struct pipe_context *pctx)
 601 {
 602         pctx->transfer_map = u_transfer_helper_transfer_map;
 603         pctx->transfer_flush_region = u_transfer_helper_transfer_flush_region;
 604         pctx->transfer_unmap = u_transfer_helper_transfer_unmap;
 605         pctx->buffer_subdata = u_default_buffer_subdata;
 606         pctx->create_surface = panfrost_create_surface;
 607         pctx->surface_destroy = panfrost_surface_destroy;
 608         pctx->resource_copy_region = util_resource_copy_region;
 609         pctx->blit = panfrost_blit;
 610         pctx->flush_resource = panfrost_flush_resource;
 611         pctx->invalidate_resource = panfrost_invalidate_resource;
 612         pctx->transfer_flush_region = u_transfer_helper_transfer_flush_region;
 613         pctx->buffer_subdata = u_default_buffer_subdata;
 614         pctx->texture_subdata = u_default_texture_subdata;
 615 }