src/gallium/drivers/r600/r600_texture.c

   1 /*
   2  * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *      Jerome Glisse
  25  *      Corbin Simpson
  26  */
  27 #include <pipe/p_screen.h>
  28 #include <util/u_format.h>
  29 #include <util/u_math.h>
  30 #include <util/u_inlines.h>
  31 #include <util/u_memory.h>
  32 #include "state_tracker/drm_driver.h"
  33 #include "r600_screen.h"
  34 #include "r600_context.h"
  35 #include "r600_resource.h"
  36 #include "r600d.h"
  37
  38 extern struct u_resource_vtbl r600_texture_vtbl;
  39
  40 /* Copy from a tiled texture to a detiled one. */
  41 static void r600_copy_from_tiled_texture(struct pipe_context *ctx, struct r600_transfer *rtransfer)
  42 {
  43         struct pipe_transfer *transfer = (struct pipe_transfer*)rtransfer;
  44         struct pipe_resource *texture = transfer->resource;
  45         struct pipe_subresource subdst;
  46
  47         subdst.face = 0;
  48         subdst.level = 0;
  49         ctx->resource_copy_region(ctx, rtransfer->linear_texture,
  50                                 subdst, 0, 0, 0, texture, transfer->sr,
  51                                 transfer->box.x, transfer->box.y, transfer->box.z,
  52                                 transfer->box.width, transfer->box.height);
  53 }
  54
  55 static unsigned long r600_texture_get_offset(struct r600_resource_texture *rtex,
  56                                         unsigned level, unsigned zslice,
  57                                         unsigned face)
  58 {
  59         unsigned long offset = rtex->offset[level];
  60
  61         switch (rtex->resource.base.b.target) {
  62         case PIPE_TEXTURE_3D:
  63                 assert(face == 0);
  64                 return offset + zslice * rtex->layer_size[level];
  65         case PIPE_TEXTURE_CUBE:
  66                 assert(zslice == 0);
  67                 return offset + face * rtex->layer_size[level];
  68         default:
  69                 assert(zslice == 0 && face == 0);
  70                 return offset;
  71         }
  72 }
  73
  74 static void r600_setup_miptree(struct r600_screen *rscreen, struct r600_resource_texture *rtex)
  75 {
  76         struct pipe_resource *ptex = &rtex->resource.base.b;
  77         unsigned long w, h, pitch, size, layer_size, i, offset;
  78
  79         rtex->bpt = util_format_get_blocksize(ptex->format);
  80         for (i = 0, offset = 0; i <= ptex->last_level; i++) {
  81                 w = u_minify(ptex->width0, i);
  82                 h = u_minify(ptex->height0, i);
  83                 h = util_next_power_of_two(h);
  84                 pitch = util_format_get_stride(ptex->format, align(w, 64));
  85                 pitch = align(pitch, 256);
  86                 layer_size = pitch * h;
  87                 if (ptex->target == PIPE_TEXTURE_CUBE)
  88                         size = layer_size * 6;
  89                 else
  90                         size = layer_size * u_minify(ptex->depth0, i);
  91                 rtex->offset[i] = offset;
  92                 rtex->layer_size[i] = layer_size;
  93                 rtex->pitch[i] = pitch;
  94                 offset += size;
  95         }
  96         rtex->size = offset;
  97 }
  98
  99 struct pipe_resource *r600_texture_create(struct pipe_screen *screen,
 100                                                 const struct pipe_resource *templ)
 101 {
 102         struct r600_resource_texture *rtex;
 103         struct r600_resource *resource;
 104         struct r600_screen *rscreen = r600_screen(screen);
 105
 106         rtex = CALLOC_STRUCT(r600_resource_texture);
 107         if (!rtex) {
 108                 return NULL;
 109         }
 110         resource = &rtex->resource;
 111         resource->base.b = *templ;
 112         resource->base.vtbl = &r600_texture_vtbl;
 113         pipe_reference_init(&resource->base.b.reference, 1);
 114         resource->base.b.screen = screen;
 115         r600_setup_miptree(rscreen, rtex);
 116
 117         /* FIXME alignment 4096 enought ? too much ? */
 118         resource->domain = r600_domain_from_usage(resource->base.b.bind);
 119         resource->bo = radeon_bo(rscreen->rw, 0, rtex->size, 4096, NULL);
 120         if (resource->bo == NULL) {
 121                 FREE(rtex);
 122                 return NULL;
 123         }
 124         return &resource->base.b;
 125 }
 126
 127 static void r600_texture_destroy(struct pipe_screen *screen,
 128                                  struct pipe_resource *ptex)
 129 {
 130         struct r600_resource_texture *rtex = (struct r600_resource_texture*)ptex;
 131         struct r600_resource *resource = &rtex->resource;
 132         struct r600_screen *rscreen = r600_screen(screen);
 133
 134         if (resource->bo) {
 135                 radeon_bo_decref(rscreen->rw, resource->bo);
 136         }
 137         FREE(rtex);
 138 }
 139
 140 static struct pipe_surface *r600_get_tex_surface(struct pipe_screen *screen,
 141                                                 struct pipe_resource *texture,
 142                                                 unsigned face, unsigned level,
 143                                                 unsigned zslice, unsigned flags)
 144 {
 145         struct r600_resource_texture *rtex = (struct r600_resource_texture*)texture;
 146         struct pipe_surface *surface = CALLOC_STRUCT(pipe_surface);
 147         unsigned long offset;
 148
 149         if (surface == NULL)
 150                 return NULL;
 151         offset = r600_texture_get_offset(rtex, level, zslice, face);
 152         pipe_reference_init(&surface->reference, 1);
 153         pipe_resource_reference(&surface->texture, texture);
 154         surface->format = texture->format;
 155         surface->width = u_minify(texture->width0, level);
 156         surface->height = u_minify(texture->height0, level);
 157         surface->offset = offset;
 158         surface->usage = flags;
 159         surface->zslice = zslice;
 160         surface->texture = texture;
 161         surface->face = face;
 162         surface->level = level;
 163         return surface;
 164 }
 165
 166 static void r600_tex_surface_destroy(struct pipe_surface *surface)
 167 {
 168         pipe_resource_reference(&surface->texture, NULL);
 169         FREE(surface);
 170 }
 171
 172 struct pipe_resource *r600_texture_from_handle(struct pipe_screen *screen,
 173                                                const struct pipe_resource *templ,
 174                                                struct winsys_handle *whandle)
 175 {
 176         struct radeon *rw = (struct radeon*)screen->winsys;
 177         struct r600_resource_texture *rtex;
 178         struct r600_resource *resource;
 179         struct radeon_bo *bo = NULL;
 180
 181         bo = radeon_bo(rw, whandle->handle, 0, 0, NULL);
 182         if (bo == NULL) {
 183                 return NULL;
 184         }
 185
 186         /* Support only 2D textures without mipmaps */
 187         if ((templ->target != PIPE_TEXTURE_2D && templ->target != PIPE_TEXTURE_RECT) ||
 188               templ->depth0 != 1 || templ->last_level != 0)
 189                 return NULL;
 190
 191         rtex = CALLOC_STRUCT(r600_resource_texture);
 192         if (rtex == NULL)
 193                 return NULL;
 194
 195         resource = &rtex->resource;
 196         resource->base.b = *templ;
 197         resource->base.vtbl = &r600_texture_vtbl;
 198         pipe_reference_init(&resource->base.b.reference, 1);
 199         resource->base.b.screen = screen;
 200         resource->bo = bo;
 201         rtex->pitch_override = whandle->stride;
 202         rtex->bpt = util_format_get_blocksize(templ->format);
 203         rtex->pitch[0] = whandle->stride;
 204         rtex->offset[0] = 0;
 205         rtex->size = align(rtex->pitch[0] * templ->height0, 64);
 206
 207         return &resource->base.b;
 208 }
 209
 210 static unsigned int r600_texture_is_referenced(struct pipe_context *context,
 211                                                 struct pipe_resource *texture,
 212                                                 unsigned face, unsigned level)
 213 {
 214         /* FIXME */
 215         return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 216 }
 217
 218 struct pipe_transfer* r600_texture_get_transfer(struct pipe_context *ctx,
 219                                                 struct pipe_resource *texture,
 220                                                 struct pipe_subresource sr,
 221                                                 unsigned usage,
 222                                                 const struct pipe_box *box)
 223 {
 224         struct r600_resource_texture *rtex = (struct r600_resource_texture*)texture;
 225         struct pipe_resource resource;
 226         struct r600_transfer *trans;
 227
 228         trans = CALLOC_STRUCT(r600_transfer);
 229         if (trans == NULL)
 230                 return NULL;
 231         pipe_resource_reference(&trans->transfer.resource, texture);
 232         trans->transfer.sr = sr;
 233         trans->transfer.usage = usage;
 234         trans->transfer.box = *box;
 235         trans->transfer.stride = rtex->pitch[sr.level];
 236         trans->offset = r600_texture_get_offset(rtex, sr.level, box->z, sr.face);
 237         if (rtex->tilled) {
 238                 resource.target = PIPE_TEXTURE_2D;
 239                 resource.format = texture->format;
 240                 resource.width0 = box->width;
 241                 resource.height0 = box->height;
 242                 resource.depth0 = 0;
 243                 resource.last_level = 0;
 244                 resource.nr_samples = 0;
 245                 resource.usage = PIPE_USAGE_DYNAMIC;
 246                 resource.bind = 0;
 247                 resource.flags = 0;
 248                 /* For texture reading, the temporary (detiled) texture is used as
 249                  * a render target when blitting from a tiled texture. */
 250                 if (usage & PIPE_TRANSFER_READ) {
 251                         resource.bind |= PIPE_BIND_RENDER_TARGET;
 252                 }
 253                 /* For texture writing, the temporary texture is used as a sampler
 254                  * when blitting into a tiled texture. */
 255                 if (usage & PIPE_TRANSFER_WRITE) {
 256                         resource.bind |= PIPE_BIND_SAMPLER_VIEW;
 257                 }
 258                 /* Create the temporary texture. */
 259                 trans->linear_texture = ctx->screen->resource_create(ctx->screen, &resource);
 260                 if (trans->linear_texture == NULL) {
 261                         R600_ERR("failed to create temporary texture to hold untiled copy\n");
 262                         pipe_resource_reference(&trans->transfer.resource, NULL);
 263                         FREE(trans);
 264                         return NULL;
 265                 }
 266                 if (usage & PIPE_TRANSFER_READ) {
 267                         /* We cannot map a tiled texture directly because the data is
 268                          * in a different order, therefore we do detiling using a blit. */
 269                         r600_copy_from_tiled_texture(ctx, trans);
 270                         /* Always referenced in the blit. */
 271                         ctx->flush(ctx, 0, NULL);
 272                 }
 273         }
 274         return &trans->transfer;
 275 }
 276
 277 void r600_texture_transfer_destroy(struct pipe_context *ctx,
 278                                    struct pipe_transfer *transfer)
 279 {
 280         struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
 281
 282         if (rtransfer->linear_texture) {
 283                 pipe_resource_reference(&rtransfer->linear_texture, NULL);
 284         }
 285         pipe_resource_reference(&transfer->resource, NULL);
 286         FREE(transfer);
 287 }
 288
 289 void* r600_texture_transfer_map(struct pipe_context *ctx,
 290                                 struct pipe_transfer* transfer)
 291 {
 292         struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
 293         struct r600_resource *resource;
 294         enum pipe_format format = transfer->resource->format;
 295         struct r600_screen *rscreen = r600_screen(ctx->screen);
 296         char *map;
 297
 298         r600_flush(ctx, 0, NULL);
 299         if (rtransfer->linear_texture) {
 300                 resource = (struct r600_resource *)rtransfer->linear_texture;
 301         } else {
 302                 resource = (struct r600_resource *)transfer->resource;
 303         }
 304         if (radeon_bo_map(rscreen->rw, resource->bo)) {
 305                 return NULL;
 306         }
 307         radeon_bo_wait(rscreen->rw, resource->bo);
 308
 309         map = resource->bo->data;
 310         if (rtransfer->linear_texture) {
 311                 return map;
 312         }
 313
 314         return map + rtransfer->offset +
 315                 transfer->box.y / util_format_get_blockheight(format) * transfer->stride +
 316                 transfer->box.x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 317 }
 318
 319 void r600_texture_transfer_unmap(struct pipe_context *ctx,
 320                                  struct pipe_transfer* transfer)
 321 {
 322         struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
 323         struct r600_screen *rscreen = r600_screen(ctx->screen);
 324         struct r600_resource *resource;
 325
 326         if (rtransfer->linear_texture) {
 327                 resource = (struct r600_resource *)rtransfer->linear_texture;
 328         } else {
 329                 resource = (struct r600_resource *)transfer->resource;
 330         }
 331         radeon_bo_unmap(rscreen->rw, resource->bo);
 332 }
 333
 334 struct u_resource_vtbl r600_texture_vtbl =
 335 {
 336         u_default_resource_get_handle,  /* get_handle */
 337         r600_texture_destroy,           /* resource_destroy */
 338         r600_texture_is_referenced,     /* is_resource_referenced */
 339         r600_texture_get_transfer,      /* get_transfer */
 340         r600_texture_transfer_destroy,  /* transfer_destroy */
 341         r600_texture_transfer_map,      /* transfer_map */
 342         u_default_transfer_flush_region,/* transfer_flush_region */
 343         r600_texture_transfer_unmap,    /* transfer_unmap */
 344         u_default_transfer_inline_write /* transfer_inline_write */
 345 };
 346
 347 void r600_init_screen_texture_functions(struct pipe_screen *screen)
 348 {
 349         screen->get_tex_surface = r600_get_tex_surface;
 350         screen->tex_surface_destroy = r600_tex_surface_destroy;
 351 }
 352
 353 static unsigned r600_get_swizzle_combined(const unsigned char *swizzle_format,
 354                 const unsigned char *swizzle_view)
 355 {
 356         unsigned i;
 357         unsigned char swizzle[4];
 358         unsigned result = 0;
 359         const uint32_t swizzle_shift[4] = {
 360                 16, 19, 22, 25,
 361         };
 362         const uint32_t swizzle_bit[4] = {
 363                 0, 1, 2, 3,
 364         };
 365
 366         if (swizzle_view) {
 367                 /* Combine two sets of swizzles. */
 368                 for (i = 0; i < 4; i++) {
 369                         swizzle[i] = swizzle_view[i] <= UTIL_FORMAT_SWIZZLE_W ?
 370                                 swizzle_format[swizzle_view[i]] : swizzle_view[i];
 371                 }
 372         } else {
 373                 memcpy(swizzle, swizzle_format, 4);
 374         }
 375
 376         /* Get swizzle. */
 377         for (i = 0; i < 4; i++) {
 378                 switch (swizzle[i]) {
 379                 case UTIL_FORMAT_SWIZZLE_Y:
 380                         result |= swizzle_bit[1] << swizzle_shift[i];
 381                         break;
 382                 case UTIL_FORMAT_SWIZZLE_Z:
 383                         result |= swizzle_bit[2] << swizzle_shift[i];
 384                         break;
 385                 case UTIL_FORMAT_SWIZZLE_W:
 386                         result |= swizzle_bit[3] << swizzle_shift[i];
 387                         break;
 388                 case UTIL_FORMAT_SWIZZLE_0:
 389                         result |= V_038010_SQ_SEL_0 << swizzle_shift[i];
 390                         break;
 391                 case UTIL_FORMAT_SWIZZLE_1:
 392                         result |= V_038010_SQ_SEL_1 << swizzle_shift[i];
 393                         break;
 394                 default: /* UTIL_FORMAT_SWIZZLE_X */
 395                         result |= swizzle_bit[0] << swizzle_shift[i];
 396                 }
 397         }
 398         return result;
 399 }
 400
 401 /* texture format translate */
 402 uint32_t r600_translate_texformat(enum pipe_format format,
 403                                   const unsigned char *swizzle_view,
 404                                   uint32_t *word4_p, uint32_t *yuv_format_p)
 405 {
 406         uint32_t result = 0, word4 = 0, yuv_format = 0;
 407         const struct util_format_description *desc;
 408         boolean uniform = TRUE;
 409         int i;
 410         const uint32_t sign_bit[4] = {
 411                 S_038010_FORMAT_COMP_X(V_038010_SQ_FORMAT_COMP_SIGNED),
 412                 S_038010_FORMAT_COMP_Y(V_038010_SQ_FORMAT_COMP_SIGNED),
 413                 S_038010_FORMAT_COMP_Z(V_038010_SQ_FORMAT_COMP_SIGNED),
 414                 S_038010_FORMAT_COMP_W(V_038010_SQ_FORMAT_COMP_SIGNED)
 415         };
 416         desc = util_format_description(format);
 417
 418         /* Colorspace (return non-RGB formats directly). */
 419         switch (desc->colorspace) {
 420                 /* Depth stencil formats */
 421         case UTIL_FORMAT_COLORSPACE_ZS:
 422                 switch (format) {
 423                 case PIPE_FORMAT_Z16_UNORM:
 424                         result = V_0280A0_COLOR_16;
 425                         goto out_word4;
 426                 case PIPE_FORMAT_Z24X8_UNORM:
 427                         result = V_0280A0_COLOR_8_24;
 428                         goto out_word4;
 429                 case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 430                         result = V_0280A0_COLOR_8_24;
 431                         goto out_word4;
 432                 default:
 433                         goto out_unknown;
 434                 }
 435
 436         case UTIL_FORMAT_COLORSPACE_YUV:
 437                 yuv_format |= (1 << 30);
 438                 switch (format) {
 439                 case PIPE_FORMAT_UYVY:
 440                 case PIPE_FORMAT_YUYV:
 441                 default:
 442                         break;
 443                 }
 444                 goto out_unknown; /* TODO */
 445
 446         case UTIL_FORMAT_COLORSPACE_SRGB:
 447                 word4 |= S_038010_FORCE_DEGAMMA(1);
 448                 if (format == PIPE_FORMAT_L8A8_SRGB || format == PIPE_FORMAT_L8_SRGB)
 449                         goto out_unknown; /* fails for some reason - TODO */
 450                 break;
 451
 452         default:
 453                 break;
 454         }
 455
 456         word4 |= r600_get_swizzle_combined(desc->swizzle, swizzle_view);
 457
 458         /* S3TC formats. TODO */
 459         if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 460                 goto out_unknown;
 461         }
 462
 463
 464         for (i = 0; i < desc->nr_channels; i++) {
 465                 if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 466                         word4 |= sign_bit[i];
 467                 }
 468         }
 469
 470         /* R8G8Bx_SNORM - TODO CxV8U8 */
 471
 472         /* RGTC - TODO */
 473
 474         /* See whether the components are of the same size. */
 475         for (i = 1; i < desc->nr_channels; i++) {
 476                 uniform = uniform && desc->channel[0].size == desc->channel[i].size;
 477         }
 478
 479         /* Non-uniform formats. */
 480         if (!uniform) {
 481                 switch(desc->nr_channels) {
 482                 case 3:
 483                         if (desc->channel[0].size == 5 &&
 484                             desc->channel[1].size == 6 &&
 485                             desc->channel[2].size == 5) {
 486                                 result |= V_0280A0_COLOR_5_6_5;
 487                                 goto out_word4;
 488                         }
 489                         goto out_unknown;
 490                 case 4:
 491                         if (desc->channel[0].size == 5 &&
 492                             desc->channel[1].size == 5 &&
 493                             desc->channel[2].size == 5 &&
 494                             desc->channel[3].size == 1) {
 495                                 result |= V_0280A0_COLOR_1_5_5_5;
 496                                 goto out_word4;
 497                         }
 498                         if (desc->channel[0].size == 10 &&
 499                             desc->channel[1].size == 10 &&
 500                             desc->channel[2].size == 10 &&
 501                             desc->channel[3].size == 2) {
 502                                 result |= V_0280A0_COLOR_10_10_10_2;
 503                                 goto out_word4;
 504                         }
 505                         goto out_unknown;
 506                 }
 507                 goto out_unknown;
 508         }
 509
 510         /* uniform formats */
 511         switch (desc->channel[0].type) {
 512         case UTIL_FORMAT_TYPE_UNSIGNED:
 513         case UTIL_FORMAT_TYPE_SIGNED:
 514                 if (!desc->channel[0].normalized &&
 515                     desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
 516                         goto out_unknown;
 517                 }
 518
 519                 switch (desc->channel[0].size) {
 520                 case 4:
 521                         switch (desc->nr_channels) {
 522                         case 2:
 523                                 result |= V_0280A0_COLOR_4_4;
 524                                 goto out_word4;
 525                         case 4:
 526                                 result |= V_0280A0_COLOR_4_4_4_4;
 527                                 goto out_word4;
 528                         }
 529                         goto out_unknown;
 530                 case 8:
 531                         switch (desc->nr_channels) {
 532                         case 1:
 533                                 result |= V_0280A0_COLOR_8;
 534                                 goto out_word4;
 535                         case 2:
 536                                 result |= V_0280A0_COLOR_8_8;
 537                                 goto out_word4;
 538                         case 4:
 539                                 result |= V_0280A0_COLOR_8_8_8_8;
 540                                 goto out_word4;
 541                         }
 542                         goto out_unknown;
 543                 case 16:
 544                         switch (desc->nr_channels) {
 545                         case 1:
 546                                 result |= V_0280A0_COLOR_16;
 547                                 goto out_word4;
 548                         case 2:
 549                                 result |= V_0280A0_COLOR_16_16;
 550                                 goto out_word4;
 551                         case 4:
 552                                 result |= V_0280A0_COLOR_16_16_16_16;
 553                                 goto out_word4;
 554                         }
 555                 }
 556                 goto out_unknown;
 557
 558         case UTIL_FORMAT_TYPE_FLOAT:
 559                 switch (desc->channel[0].size) {
 560                 case 16:
 561                         switch (desc->nr_channels) {
 562                         case 1:
 563                                 result |= V_0280A0_COLOR_16_FLOAT;
 564                                 goto out_word4;
 565                         case 2:
 566                                 result |= V_0280A0_COLOR_16_16_FLOAT;
 567                                 goto out_word4;
 568                         case 4:
 569                                 result |= V_0280A0_COLOR_16_16_16_16_FLOAT;
 570                                 goto out_word4;
 571                         }
 572                         goto out_unknown;
 573                 case 32:
 574                         switch (desc->nr_channels) {
 575                         case 1:
 576                                 result |= V_0280A0_COLOR_32_FLOAT;
 577                                 goto out_word4;
 578                         case 2:
 579                                 result |= V_0280A0_COLOR_32_32_FLOAT;
 580                                 goto out_word4;
 581                         case 4:
 582                                 result |= V_0280A0_COLOR_32_32_32_32_FLOAT;
 583                                 goto out_word4;
 584                         }
 585                 }
 586
 587         }
 588 out_word4:
 589         if (word4_p)
 590                 *word4_p = word4;
 591         if (yuv_format_p)
 592                 *yuv_format_p = yuv_format;
 593         return result;
 594 out_unknown:
 595         R600_ERR("Unable to handle texformat %d %s\n", format, util_format_name(format));
 596         return ~0;
 597 }