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 <errno.h>
  28 #include <pipe/p_screen.h>
  29 #include <util/u_format.h>
  30 #include <util/u_math.h>
  31 #include <util/u_inlines.h>
  32 #include <util/u_memory.h>
  33 #include "state_tracker/drm_driver.h"
  34 #include "r600_pipe.h"
  35 #include "r600_resource.h"
  36 #include "r600_state_inlines.h"
  37 #include "r600d.h"
  38 #include "r600_formats.h"
  39
  40 extern struct u_resource_vtbl r600_texture_vtbl;
  41
  42 /* Copy from a tiled texture to a detiled one. */
  43 static void r600_copy_from_tiled_texture(struct pipe_context *ctx, struct r600_transfer *rtransfer)
  44 {
  45         struct pipe_transfer *transfer = (struct pipe_transfer*)rtransfer;
  46         struct pipe_resource *texture = transfer->resource;
  47         struct pipe_subresource subdst;
  48
  49         subdst.face = 0;
  50         subdst.level = 0;
  51         ctx->resource_copy_region(ctx, rtransfer->linear_texture,
  52                                 subdst, 0, 0, 0, texture, transfer->sr,
  53                                 transfer->box.x, transfer->box.y, transfer->box.z,
  54                                 transfer->box.width, transfer->box.height);
  55 }
  56
  57
  58 /* Copy from a detiled texture to a tiled one. */
  59 static void r600_copy_into_tiled_texture(struct pipe_context *ctx, struct r600_transfer *rtransfer)
  60 {
  61         struct pipe_transfer *transfer = (struct pipe_transfer*)rtransfer;
  62         struct pipe_resource *texture = transfer->resource;
  63         struct pipe_subresource subsrc;
  64
  65         subsrc.face = 0;
  66         subsrc.level = 0;
  67         ctx->resource_copy_region(ctx, texture, transfer->sr,
  68                                   transfer->box.x, transfer->box.y, transfer->box.z,
  69                                   rtransfer->linear_texture, subsrc,
  70                                   0, 0, 0,
  71                                   transfer->box.width, transfer->box.height);
  72
  73         ctx->flush(ctx, 0, NULL);
  74 }
  75
  76 static unsigned r600_texture_get_offset(struct r600_resource_texture *rtex,
  77                                         unsigned level, unsigned zslice,
  78                                         unsigned face)
  79 {
  80         unsigned offset = rtex->offset[level];
  81
  82         switch (rtex->resource.base.b.target) {
  83         case PIPE_TEXTURE_3D:
  84                 assert(face == 0);
  85                 return offset + zslice * rtex->layer_size[level];
  86         case PIPE_TEXTURE_CUBE:
  87                 assert(zslice == 0);
  88                 return offset + face * rtex->layer_size[level];
  89         default:
  90                 assert(zslice == 0 && face == 0);
  91                 return offset;
  92         }
  93 }
  94
  95 static unsigned r600_texture_get_stride(struct pipe_screen *screen,
  96                                         struct r600_resource_texture *rtex,
  97                                         unsigned level)
  98 {
  99         struct pipe_resource *ptex = &rtex->resource.base.b;
 100         struct radeon *radeon = (struct radeon *)screen->winsys;
 101         enum chip_class chipc = r600_get_family_class(radeon);
 102         unsigned width, stride;
 103
 104         if (rtex->pitch_override)
 105                 return rtex->pitch_override;
 106
 107         width = u_minify(ptex->width0, level);
 108
 109         stride = util_format_get_stride(ptex->format, align(width, 64));
 110         if (chipc == EVERGREEN)
 111                 stride = align(stride, 512);
 112         else
 113                 stride = align(stride, 256);
 114         return stride;
 115 }
 116
 117 static unsigned r600_texture_get_nblocksy(struct pipe_screen *screen,
 118                                           struct r600_resource_texture *rtex,
 119                                           unsigned level)
 120 {
 121         struct pipe_resource *ptex = &rtex->resource.base.b;
 122         unsigned height;
 123
 124         height = u_minify(ptex->height0, level);
 125         height = util_next_power_of_two(height);
 126         return util_format_get_nblocksy(ptex->format, height);
 127 }
 128
 129 /* Get a width in pixels from a stride in bytes. */
 130 static unsigned pitch_to_width(enum pipe_format format,
 131                                 unsigned pitch_in_bytes)
 132 {
 133     return (pitch_in_bytes / util_format_get_blocksize(format)) *
 134             util_format_get_blockwidth(format);
 135 }
 136
 137 static void r600_setup_miptree(struct pipe_screen *screen,
 138                                struct r600_resource_texture *rtex)
 139 {
 140         struct pipe_resource *ptex = &rtex->resource.base.b;
 141         struct radeon *radeon = (struct radeon *)screen->winsys;
 142         enum chip_class chipc = r600_get_family_class(radeon);
 143         unsigned pitch, size, layer_size, i, offset;
 144         unsigned nblocksy;
 145
 146         for (i = 0, offset = 0; i <= ptex->last_level; i++) {
 147                 pitch = r600_texture_get_stride(screen, rtex, i);
 148                 nblocksy = r600_texture_get_nblocksy(screen, rtex, i);
 149
 150                 layer_size = pitch * nblocksy;
 151
 152                 if (ptex->target == PIPE_TEXTURE_CUBE) {
 153                         if (chipc >= R700)
 154                                 size = layer_size * 8;
 155                         else
 156                                 size = layer_size * 6;
 157                 }
 158                 else
 159                         size = layer_size * u_minify(ptex->depth0, i);
 160                 rtex->offset[i] = offset;
 161                 rtex->layer_size[i] = layer_size;
 162                 rtex->pitch_in_bytes[i] = pitch;
 163                 rtex->pitch_in_pixels[i] = pitch_to_width(ptex->format, pitch);
 164                 offset += size;
 165         }
 166         rtex->size = offset;
 167 }
 168
 169 static struct r600_resource_texture *
 170 r600_texture_create_object(struct pipe_screen *screen,
 171                            const struct pipe_resource *base,
 172                            unsigned array_mode,
 173                            unsigned pitch_in_bytes_override,
 174                            unsigned max_buffer_size,
 175                            struct r600_bo *bo)
 176 {
 177         struct r600_resource_texture *rtex;
 178         struct r600_resource *resource;
 179         struct radeon *radeon = (struct radeon *)screen->winsys;
 180
 181         rtex = CALLOC_STRUCT(r600_resource_texture);
 182         if (rtex == NULL)
 183                 return NULL;
 184
 185         resource = &rtex->resource;
 186         resource->base.b = *base;
 187         resource->base.vtbl = &r600_texture_vtbl;
 188         pipe_reference_init(&resource->base.b.reference, 1);
 189         resource->base.b.screen = screen;
 190         resource->bo = bo;
 191         resource->domain = r600_domain_from_usage(resource->base.b.bind);
 192         rtex->pitch_override = pitch_in_bytes_override;
 193         rtex->array_mode = array_mode;
 194
 195         if (array_mode)
 196                 rtex->tiled = 1;
 197         r600_setup_miptree(screen, rtex);
 198
 199         resource->size = rtex->size;
 200
 201         if (!resource->bo) {
 202                 resource->bo = r600_bo(radeon, rtex->size, 4096, 0);
 203                 if (!resource->bo) {
 204                         FREE(rtex);
 205                         return NULL;
 206                 }
 207         }
 208         return rtex;
 209 }
 210
 211 struct pipe_resource *r600_texture_create(struct pipe_screen *screen,
 212                                                 const struct pipe_resource *templ)
 213 {
 214         unsigned array_mode = 0;
 215
 216         return (struct pipe_resource *)r600_texture_create_object(screen, templ, array_mode,
 217                                                                   0, 0, NULL);
 218
 219 }
 220
 221 static void r600_texture_destroy(struct pipe_screen *screen,
 222                                  struct pipe_resource *ptex)
 223 {
 224         struct r600_resource_texture *rtex = (struct r600_resource_texture*)ptex;
 225         struct r600_resource *resource = &rtex->resource;
 226         struct radeon *radeon = (struct radeon *)screen->winsys;
 227
 228         if (rtex->flushed_depth_texture)
 229                 pipe_resource_reference((struct pipe_resource **)&rtex->flushed_depth_texture, NULL);
 230
 231         if (resource->bo) {
 232                 r600_bo_reference(radeon, &resource->bo, NULL);
 233         }
 234         FREE(rtex);
 235 }
 236
 237 static struct pipe_surface *r600_get_tex_surface(struct pipe_screen *screen,
 238                                                 struct pipe_resource *texture,
 239                                                 unsigned face, unsigned level,
 240                                                 unsigned zslice, unsigned flags)
 241 {
 242         struct r600_resource_texture *rtex = (struct r600_resource_texture*)texture;
 243         struct pipe_surface *surface = CALLOC_STRUCT(pipe_surface);
 244         unsigned offset;
 245
 246         if (surface == NULL)
 247                 return NULL;
 248         offset = r600_texture_get_offset(rtex, level, zslice, face);
 249         pipe_reference_init(&surface->reference, 1);
 250         pipe_resource_reference(&surface->texture, texture);
 251         surface->format = texture->format;
 252         surface->width = u_minify(texture->width0, level);
 253         surface->height = u_minify(texture->height0, level);
 254         surface->offset = offset;
 255         surface->usage = flags;
 256         surface->zslice = zslice;
 257         surface->texture = texture;
 258         surface->face = face;
 259         surface->level = level;
 260         return surface;
 261 }
 262
 263 static void r600_tex_surface_destroy(struct pipe_surface *surface)
 264 {
 265         pipe_resource_reference(&surface->texture, NULL);
 266         FREE(surface);
 267 }
 268
 269
 270 struct pipe_resource *r600_texture_from_handle(struct pipe_screen *screen,
 271                                                const struct pipe_resource *templ,
 272                                                struct winsys_handle *whandle)
 273 {
 274         struct radeon *rw = (struct radeon*)screen->winsys;
 275         struct r600_bo *bo = NULL;
 276         unsigned array_mode = 0;
 277
 278         /* Support only 2D textures without mipmaps */
 279         if ((templ->target != PIPE_TEXTURE_2D && templ->target != PIPE_TEXTURE_RECT) ||
 280               templ->depth0 != 1 || templ->last_level != 0)
 281                 return NULL;
 282
 283         bo = r600_bo_handle(rw, whandle->handle, &array_mode);
 284         if (bo == NULL) {
 285                 return NULL;
 286         }
 287
 288         return (struct pipe_resource *)r600_texture_create_object(screen, templ, array_mode,
 289                                                                   whandle->stride,
 290                                                                   0,
 291                                                                   bo);
 292 }
 293
 294 static unsigned int r600_texture_is_referenced(struct pipe_context *context,
 295                                                 struct pipe_resource *texture,
 296                                                 unsigned face, unsigned level)
 297 {
 298         /* FIXME */
 299         return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 300 }
 301
 302 int (*r600_blit_uncompress_depth_ptr)(struct pipe_context *ctx, struct r600_resource_texture *texture);
 303
 304 int r600_texture_depth_flush(struct pipe_context *ctx,
 305                              struct pipe_resource *texture)
 306 {
 307         struct r600_resource_texture *rtex = (struct r600_resource_texture*)texture;
 308         struct pipe_resource resource;
 309
 310         if (rtex->flushed_depth_texture)
 311                 goto out;
 312
 313         resource.target = PIPE_TEXTURE_2D;
 314         resource.format = texture->format;
 315         resource.width0 = texture->width0;
 316         resource.height0 = texture->height0;
 317         resource.depth0 = 1;
 318         resource.last_level = 0;
 319         resource.nr_samples = 0;
 320         resource.usage = PIPE_USAGE_DYNAMIC;
 321         resource.bind = 0;
 322         resource.flags = 0;
 323
 324         resource.bind |= PIPE_BIND_DEPTH_STENCIL;
 325
 326         rtex->flushed_depth_texture = (struct r600_resource_texture *)ctx->screen->resource_create(ctx->screen, &resource);
 327         if (rtex->flushed_depth_texture == NULL) {
 328                 R600_ERR("failed to create temporary texture to hold untiled copy\n");
 329                 return -ENOMEM;
 330         }
 331
 332 out:
 333         r600_blit_uncompress_depth_ptr(ctx, rtex);
 334         return 0;
 335 }
 336
 337 struct pipe_transfer* r600_texture_get_transfer(struct pipe_context *ctx,
 338                                                 struct pipe_resource *texture,
 339                                                 struct pipe_subresource sr,
 340                                                 unsigned usage,
 341                                                 const struct pipe_box *box)
 342 {
 343         struct r600_resource_texture *rtex = (struct r600_resource_texture*)texture;
 344         struct pipe_resource resource;
 345         struct r600_transfer *trans;
 346         int r;
 347
 348         trans = CALLOC_STRUCT(r600_transfer);
 349         if (trans == NULL)
 350                 return NULL;
 351         pipe_resource_reference(&trans->transfer.resource, texture);
 352         trans->transfer.sr = sr;
 353         trans->transfer.usage = usage;
 354         trans->transfer.box = *box;
 355         if (rtex->depth) {
 356                 r = r600_texture_depth_flush(ctx, texture);
 357                 if (r < 0) {
 358                         R600_ERR("failed to create temporary texture to hold untiled copy\n");
 359                         pipe_resource_reference(&trans->transfer.resource, NULL);
 360                         FREE(trans);
 361                         return NULL;
 362                 }
 363         } else if (rtex->tiled) {
 364                 resource.target = PIPE_TEXTURE_2D;
 365                 resource.format = texture->format;
 366                 resource.width0 = box->width;
 367                 resource.height0 = box->height;
 368                 resource.depth0 = 1;
 369                 resource.last_level = 0;
 370                 resource.nr_samples = 0;
 371                 resource.usage = PIPE_USAGE_DYNAMIC;
 372                 resource.bind = 0;
 373                 resource.flags = 0;
 374                 /* For texture reading, the temporary (detiled) texture is used as
 375                  * a render target when blitting from a tiled texture. */
 376                 if (usage & PIPE_TRANSFER_READ) {
 377                         resource.bind |= PIPE_BIND_RENDER_TARGET;
 378                 }
 379                 /* For texture writing, the temporary texture is used as a sampler
 380                  * when blitting into a tiled texture. */
 381                 if (usage & PIPE_TRANSFER_WRITE) {
 382                         resource.bind |= PIPE_BIND_SAMPLER_VIEW;
 383                 }
 384                 /* Create the temporary texture. */
 385                 trans->linear_texture = ctx->screen->resource_create(ctx->screen, &resource);
 386                 if (trans->linear_texture == NULL) {
 387                         R600_ERR("failed to create temporary texture to hold untiled copy\n");
 388                         pipe_resource_reference(&trans->transfer.resource, NULL);
 389                         FREE(trans);
 390                         return NULL;
 391                 }
 392
 393                 trans->transfer.stride =
 394                   ((struct r600_resource_texture *)trans->linear_texture)->pitch_in_bytes[0];
 395                 if (usage & PIPE_TRANSFER_READ) {
 396                         /* We cannot map a tiled texture directly because the data is
 397                          * in a different order, therefore we do detiling using a blit. */
 398                         r600_copy_from_tiled_texture(ctx, trans);
 399                         /* Always referenced in the blit. */
 400                         ctx->flush(ctx, 0, NULL);
 401                 }
 402                 return &trans->transfer;
 403         }
 404         trans->transfer.stride = rtex->pitch_in_bytes[sr.level];
 405         trans->offset = r600_texture_get_offset(rtex, sr.level, box->z, sr.face);
 406         return &trans->transfer;
 407 }
 408
 409 void r600_texture_transfer_destroy(struct pipe_context *ctx,
 410                                    struct pipe_transfer *transfer)
 411 {
 412         struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
 413         struct r600_resource_texture *rtex = (struct r600_resource_texture*)transfer->resource;
 414
 415         if (rtransfer->linear_texture) {
 416                 if (transfer->usage & PIPE_TRANSFER_WRITE) {
 417                         r600_copy_into_tiled_texture(ctx, rtransfer);
 418                 }
 419                 pipe_resource_reference(&rtransfer->linear_texture, NULL);
 420         }
 421         if (rtex->flushed_depth_texture) {
 422                 pipe_resource_reference((struct pipe_resource **)&rtex->flushed_depth_texture, NULL);
 423         }
 424         pipe_resource_reference(&transfer->resource, NULL);
 425         FREE(transfer);
 426 }
 427
 428 void* r600_texture_transfer_map(struct pipe_context *ctx,
 429                                 struct pipe_transfer* transfer)
 430 {
 431         struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
 432         struct r600_bo *bo;
 433         enum pipe_format format = transfer->resource->format;
 434         struct radeon *radeon = (struct radeon *)ctx->screen->winsys;
 435         unsigned offset = 0;
 436         char *map;
 437
 438         if (rtransfer->linear_texture) {
 439                 bo = ((struct r600_resource *)rtransfer->linear_texture)->bo;
 440         } else {
 441                 struct r600_resource_texture *rtex = (struct r600_resource_texture*)transfer->resource;
 442
 443                 if (rtex->flushed_depth_texture)
 444                         bo = ((struct r600_resource *)rtex->flushed_depth_texture)->bo;
 445                 else
 446                         bo = ((struct r600_resource *)transfer->resource)->bo;
 447
 448                 offset = rtransfer->offset +
 449                         transfer->box.y / util_format_get_blockheight(format) * transfer->stride +
 450                         transfer->box.x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 451         }
 452         map = r600_bo_map(radeon, bo, 0, ctx);
 453         if (!map) {
 454                 return NULL;
 455         }
 456
 457         return map + offset;
 458 }
 459
 460 void r600_texture_transfer_unmap(struct pipe_context *ctx,
 461                                  struct pipe_transfer* transfer)
 462 {
 463         struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
 464         struct radeon *radeon = (struct radeon *)ctx->screen->winsys;
 465         struct r600_bo *bo;
 466
 467         if (rtransfer->linear_texture) {
 468                 bo = ((struct r600_resource *)rtransfer->linear_texture)->bo;
 469         } else {
 470                 struct r600_resource_texture *rtex = (struct r600_resource_texture*)transfer->resource;
 471
 472                 if (rtex->flushed_depth_texture) {
 473                         bo = ((struct r600_resource *)rtex->flushed_depth_texture)->bo;
 474                 } else {
 475                         bo = ((struct r600_resource *)transfer->resource)->bo;
 476                 }
 477         }
 478         r600_bo_unmap(radeon, bo);
 479 }
 480
 481 struct u_resource_vtbl r600_texture_vtbl =
 482 {
 483         u_default_resource_get_handle,  /* get_handle */
 484         r600_texture_destroy,           /* resource_destroy */
 485         r600_texture_is_referenced,     /* is_resource_referenced */
 486         r600_texture_get_transfer,      /* get_transfer */
 487         r600_texture_transfer_destroy,  /* transfer_destroy */
 488         r600_texture_transfer_map,      /* transfer_map */
 489         u_default_transfer_flush_region,/* transfer_flush_region */
 490         r600_texture_transfer_unmap,    /* transfer_unmap */
 491         u_default_transfer_inline_write /* transfer_inline_write */
 492 };
 493
 494 void r600_init_screen_texture_functions(struct pipe_screen *screen)
 495 {
 496         screen->get_tex_surface = r600_get_tex_surface;
 497         screen->tex_surface_destroy = r600_tex_surface_destroy;
 498 }
 499
 500 static unsigned r600_get_swizzle_combined(const unsigned char *swizzle_format,
 501                 const unsigned char *swizzle_view)
 502 {
 503         unsigned i;
 504         unsigned char swizzle[4];
 505         unsigned result = 0;
 506         const uint32_t swizzle_shift[4] = {
 507                 16, 19, 22, 25,
 508         };
 509         const uint32_t swizzle_bit[4] = {
 510                 0, 1, 2, 3,
 511         };
 512
 513         if (swizzle_view) {
 514                 /* Combine two sets of swizzles. */
 515                 for (i = 0; i < 4; i++) {
 516                         swizzle[i] = swizzle_view[i] <= UTIL_FORMAT_SWIZZLE_W ?
 517                                 swizzle_format[swizzle_view[i]] : swizzle_view[i];
 518                 }
 519         } else {
 520                 memcpy(swizzle, swizzle_format, 4);
 521         }
 522
 523         /* Get swizzle. */
 524         for (i = 0; i < 4; i++) {
 525                 switch (swizzle[i]) {
 526                 case UTIL_FORMAT_SWIZZLE_Y:
 527                         result |= swizzle_bit[1] << swizzle_shift[i];
 528                         break;
 529                 case UTIL_FORMAT_SWIZZLE_Z:
 530                         result |= swizzle_bit[2] << swizzle_shift[i];
 531                         break;
 532                 case UTIL_FORMAT_SWIZZLE_W:
 533                         result |= swizzle_bit[3] << swizzle_shift[i];
 534                         break;
 535                 case UTIL_FORMAT_SWIZZLE_0:
 536                         result |= V_038010_SQ_SEL_0 << swizzle_shift[i];
 537                         break;
 538                 case UTIL_FORMAT_SWIZZLE_1:
 539                         result |= V_038010_SQ_SEL_1 << swizzle_shift[i];
 540                         break;
 541                 default: /* UTIL_FORMAT_SWIZZLE_X */
 542                         result |= swizzle_bit[0] << swizzle_shift[i];
 543                 }
 544         }
 545         return result;
 546 }
 547
 548 /* texture format translate */
 549 uint32_t r600_translate_texformat(enum pipe_format format,
 550                                   const unsigned char *swizzle_view,
 551                                   uint32_t *word4_p, uint32_t *yuv_format_p)
 552 {
 553         uint32_t result = 0, word4 = 0, yuv_format = 0;
 554         const struct util_format_description *desc;
 555         boolean uniform = TRUE;
 556         int i;
 557         const uint32_t sign_bit[4] = {
 558                 S_038010_FORMAT_COMP_X(V_038010_SQ_FORMAT_COMP_SIGNED),
 559                 S_038010_FORMAT_COMP_Y(V_038010_SQ_FORMAT_COMP_SIGNED),
 560                 S_038010_FORMAT_COMP_Z(V_038010_SQ_FORMAT_COMP_SIGNED),
 561                 S_038010_FORMAT_COMP_W(V_038010_SQ_FORMAT_COMP_SIGNED)
 562         };
 563         desc = util_format_description(format);
 564
 565         word4 |= r600_get_swizzle_combined(desc->swizzle, swizzle_view);
 566
 567         /* Colorspace (return non-RGB formats directly). */
 568         switch (desc->colorspace) {
 569                 /* Depth stencil formats */
 570         case UTIL_FORMAT_COLORSPACE_ZS:
 571                 switch (format) {
 572                 case PIPE_FORMAT_Z16_UNORM:
 573                         result = FMT_16;
 574                         goto out_word4;
 575                 case PIPE_FORMAT_X24S8_USCALED:
 576                         word4 |= S_038010_NUM_FORMAT_ALL(V_038010_SQ_NUM_FORMAT_INT);
 577                 case PIPE_FORMAT_Z24X8_UNORM:
 578                 case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 579                         result = FMT_8_24;
 580                         goto out_word4;
 581                 case PIPE_FORMAT_S8X24_USCALED:
 582                         word4 |= S_038010_NUM_FORMAT_ALL(V_038010_SQ_NUM_FORMAT_INT);
 583                 case PIPE_FORMAT_X8Z24_UNORM:
 584                 case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 585                         result = FMT_24_8;
 586                         goto out_word4;
 587                 case PIPE_FORMAT_S8_USCALED:
 588                         result = V_0280A0_COLOR_8;
 589                         word4 |= S_038010_NUM_FORMAT_ALL(V_038010_SQ_NUM_FORMAT_INT);
 590                         goto out_word4;
 591                 default:
 592                         goto out_unknown;
 593                 }
 594
 595         case UTIL_FORMAT_COLORSPACE_YUV:
 596                 yuv_format |= (1 << 30);
 597                 switch (format) {
 598                 case PIPE_FORMAT_UYVY:
 599                 case PIPE_FORMAT_YUYV:
 600                 default:
 601                         break;
 602                 }
 603                 goto out_unknown; /* TODO */
 604
 605         case UTIL_FORMAT_COLORSPACE_SRGB:
 606                 word4 |= S_038010_FORCE_DEGAMMA(1);
 607                 if (format == PIPE_FORMAT_L8A8_SRGB || format == PIPE_FORMAT_L8_SRGB)
 608                         goto out_unknown; /* fails for some reason - TODO */
 609                 break;
 610
 611         default:
 612                 break;
 613         }
 614
 615         /* S3TC formats. TODO */
 616         if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 617                 goto out_unknown;
 618         }
 619
 620
 621         for (i = 0; i < desc->nr_channels; i++) {
 622                 if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 623                         word4 |= sign_bit[i];
 624                 }
 625         }
 626
 627         /* R8G8Bx_SNORM - TODO CxV8U8 */
 628
 629         /* RGTC - TODO */
 630
 631         /* See whether the components are of the same size. */
 632         for (i = 1; i < desc->nr_channels; i++) {
 633                 uniform = uniform && desc->channel[0].size == desc->channel[i].size;
 634         }
 635
 636         /* Non-uniform formats. */
 637         if (!uniform) {
 638                 switch(desc->nr_channels) {
 639                 case 3:
 640                         if (desc->channel[0].size == 5 &&
 641                             desc->channel[1].size == 6 &&
 642                             desc->channel[2].size == 5) {
 643                                 result = FMT_5_6_5;
 644                                 goto out_word4;
 645                         }
 646                         goto out_unknown;
 647                 case 4:
 648                         if (desc->channel[0].size == 5 &&
 649                             desc->channel[1].size == 5 &&
 650                             desc->channel[2].size == 5 &&
 651                             desc->channel[3].size == 1) {
 652                                 result = FMT_1_5_5_5;
 653                                 goto out_word4;
 654                         }
 655                         if (desc->channel[0].size == 10 &&
 656                             desc->channel[1].size == 10 &&
 657                             desc->channel[2].size == 10 &&
 658                             desc->channel[3].size == 2) {
 659                                 result = FMT_10_10_10_2;
 660                                 goto out_word4;
 661                         }
 662                         goto out_unknown;
 663                 }
 664                 goto out_unknown;
 665         }
 666
 667         /* Find the first non-VOID channel. */
 668         for (i = 0; i < 4; i++) {
 669                 if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 670                         break;
 671                 }
 672         }
 673
 674         if (i == 4)
 675                 goto out_unknown;
 676
 677         /* uniform formats */
 678         switch (desc->channel[i].type) {
 679         case UTIL_FORMAT_TYPE_UNSIGNED:
 680         case UTIL_FORMAT_TYPE_SIGNED:
 681                 if (!desc->channel[i].normalized &&
 682                     desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
 683                         goto out_unknown;
 684                 }
 685
 686                 switch (desc->channel[i].size) {
 687                 case 4:
 688                         switch (desc->nr_channels) {
 689                         case 2:
 690                                 result = FMT_4_4;
 691                                 goto out_word4;
 692                         case 4:
 693                                 result = FMT_4_4_4_4;
 694                                 goto out_word4;
 695                         }
 696                         goto out_unknown;
 697                 case 8:
 698                         switch (desc->nr_channels) {
 699                         case 1:
 700                                 result = FMT_8;
 701                                 goto out_word4;
 702                         case 2:
 703                                 result = FMT_8_8;
 704                                 goto out_word4;
 705                         case 4:
 706                                 result = FMT_8_8_8_8;
 707                                 goto out_word4;
 708                         }
 709                         goto out_unknown;
 710                 case 16:
 711                         switch (desc->nr_channels) {
 712                         case 1:
 713                                 result = FMT_16;
 714                                 goto out_word4;
 715                         case 2:
 716                                 result = FMT_16_16;
 717                                 goto out_word4;
 718                         case 4:
 719                                 result = FMT_16_16_16_16;
 720                                 goto out_word4;
 721                         }
 722                 }
 723                 goto out_unknown;
 724
 725         case UTIL_FORMAT_TYPE_FLOAT:
 726                 switch (desc->channel[i].size) {
 727                 case 16:
 728                         switch (desc->nr_channels) {
 729                         case 1:
 730                                 result = FMT_16_FLOAT;
 731                                 goto out_word4;
 732                         case 2:
 733                                 result = FMT_16_16_FLOAT;
 734                                 goto out_word4;
 735                         case 4:
 736                                 result = FMT_16_16_16_16_FLOAT;
 737                                 goto out_word4;
 738                         }
 739                         goto out_unknown;
 740                 case 32:
 741                         switch (desc->nr_channels) {
 742                         case 1:
 743                                 result = FMT_32_FLOAT;
 744                                 goto out_word4;
 745                         case 2:
 746                                 result = FMT_32_32_FLOAT;
 747                                 goto out_word4;
 748                         case 4:
 749                                 result = FMT_32_32_32_32_FLOAT;
 750                                 goto out_word4;
 751                         }
 752                 }
 753
 754         }
 755 out_word4:
 756         if (word4_p)
 757                 *word4_p = word4;
 758         if (yuv_format_p)
 759                 *yuv_format_p = yuv_format;
 760         return result;
 761 out_unknown:
 762 //      R600_ERR("Unable to handle texformat %d %s\n", format, util_format_name(format));
 763         return ~0;
 764 }