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_screen.h"
  35 #include "r600_context.h"
  36 #include "r600_resource.h"
  37 #include "r600_state_inlines.h"
  38 #include "r600d.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 static unsigned long r600_texture_get_offset(struct r600_resource_texture *rtex,
  58                                         unsigned level, unsigned zslice,
  59                                         unsigned face)
  60 {
  61         unsigned long offset = rtex->offset[level];
  62
  63         switch (rtex->resource.base.b.target) {
  64         case PIPE_TEXTURE_3D:
  65                 assert(face == 0);
  66                 return offset + zslice * rtex->layer_size[level];
  67         case PIPE_TEXTURE_CUBE:
  68                 assert(zslice == 0);
  69                 return offset + face * rtex->layer_size[level];
  70         default:
  71                 assert(zslice == 0 && face == 0);
  72                 return offset;
  73         }
  74 }
  75
  76 static void r600_setup_miptree(struct r600_resource_texture *rtex, enum chip_class chipc)
  77 {
  78         struct pipe_resource *ptex = &rtex->resource.base.b;
  79         unsigned long w, h, pitch, size, layer_size, i, offset;
  80
  81         rtex->bpt = util_format_get_blocksize(ptex->format);
  82         for (i = 0, offset = 0; i <= ptex->last_level; i++) {
  83                 w = u_minify(ptex->width0, i);
  84                 h = u_minify(ptex->height0, i);
  85                 h = util_next_power_of_two(h);
  86                 pitch = util_format_get_stride(ptex->format, align(w, 64));
  87                 if (chipc == EVERGREEN)
  88                         pitch = align(pitch, 512);
  89                 else
  90                         pitch = align(pitch, 256);
  91                 layer_size = pitch * h;
  92                 if (ptex->target == PIPE_TEXTURE_CUBE) {
  93                         if (chipc >= R700)
  94                                 size = layer_size * 8;
  95                         else
  96                                 size = layer_size * 6;
  97                 }
  98                 else
  99                         size = layer_size * u_minify(ptex->depth0, i);
 100                 rtex->offset[i] = offset;
 101                 rtex->layer_size[i] = layer_size;
 102                 rtex->pitch[i] = pitch;
 103                 rtex->width[i] = w;
 104                 rtex->height[i] = h;
 105                 offset += size;
 106         }
 107         rtex->size = offset;
 108 }
 109
 110 struct pipe_resource *r600_texture_create(struct pipe_screen *screen,
 111                                                 const struct pipe_resource *templ)
 112 {
 113         struct r600_resource_texture *rtex;
 114         struct r600_resource *resource;
 115         struct radeon *radeon = (struct radeon *)screen->winsys;
 116
 117         rtex = CALLOC_STRUCT(r600_resource_texture);
 118         if (!rtex) {
 119                 return NULL;
 120         }
 121         resource = &rtex->resource;
 122         resource->base.b = *templ;
 123         resource->base.vtbl = &r600_texture_vtbl;
 124         pipe_reference_init(&resource->base.b.reference, 1);
 125         resource->base.b.screen = screen;
 126         r600_setup_miptree(rtex, radeon_get_family_class(radeon));
 127
 128         /* FIXME alignment 4096 enought ? too much ? */
 129         resource->domain = r600_domain_from_usage(resource->base.b.bind);
 130         resource->size = rtex->size;
 131         resource->bo = radeon_ws_bo(radeon, rtex->size, 4096, 0);
 132         if (resource->bo == NULL) {
 133                 FREE(rtex);
 134                 return NULL;
 135         }
 136         return &resource->base.b;
 137 }
 138
 139 static void r600_texture_destroy(struct pipe_screen *screen,
 140                                  struct pipe_resource *ptex)
 141 {
 142         struct r600_resource_texture *rtex = (struct r600_resource_texture*)ptex;
 143         struct r600_resource *resource = &rtex->resource;
 144         struct radeon *radeon = (struct radeon *)screen->winsys;
 145
 146         if (rtex->flushed_depth_texture)
 147                 pipe_resource_reference(&rtex->flushed_depth_texture, NULL);
 148
 149         if (resource->bo) {
 150                 radeon_ws_bo_reference(radeon, &resource->bo, NULL);
 151         }
 152         FREE(rtex);
 153 }
 154
 155 static struct pipe_surface *r600_get_tex_surface(struct pipe_screen *screen,
 156                                                 struct pipe_resource *texture,
 157                                                 unsigned face, unsigned level,
 158                                                 unsigned zslice, unsigned flags)
 159 {
 160         struct r600_resource_texture *rtex = (struct r600_resource_texture*)texture;
 161         struct pipe_surface *surface = CALLOC_STRUCT(pipe_surface);
 162         unsigned long offset;
 163
 164         if (surface == NULL)
 165                 return NULL;
 166         offset = r600_texture_get_offset(rtex, level, zslice, face);
 167         pipe_reference_init(&surface->reference, 1);
 168         pipe_resource_reference(&surface->texture, texture);
 169         surface->format = texture->format;
 170         surface->width = u_minify(texture->width0, level);
 171         surface->height = u_minify(texture->height0, level);
 172         surface->offset = offset;
 173         surface->usage = flags;
 174         surface->zslice = zslice;
 175         surface->texture = texture;
 176         surface->face = face;
 177         surface->level = level;
 178         return surface;
 179 }
 180
 181 static void r600_tex_surface_destroy(struct pipe_surface *surface)
 182 {
 183         pipe_resource_reference(&surface->texture, NULL);
 184         FREE(surface);
 185 }
 186
 187 struct pipe_resource *r600_texture_from_handle(struct pipe_screen *screen,
 188                                                const struct pipe_resource *templ,
 189                                                struct winsys_handle *whandle)
 190 {
 191         struct radeon *rw = (struct radeon*)screen->winsys;
 192         struct r600_resource_texture *rtex;
 193         struct r600_resource *resource;
 194         struct radeon_ws_bo *bo = NULL;
 195
 196         /* Support only 2D textures without mipmaps */
 197         if ((templ->target != PIPE_TEXTURE_2D && templ->target != PIPE_TEXTURE_RECT) ||
 198               templ->depth0 != 1 || templ->last_level != 0)
 199                 return NULL;
 200
 201         rtex = CALLOC_STRUCT(r600_resource_texture);
 202         if (rtex == NULL)
 203                 return NULL;
 204
 205         bo = radeon_ws_bo_handle(rw, whandle->handle);
 206         if (bo == NULL) {
 207                 FREE(rtex);
 208                 return NULL;
 209         }
 210
 211         resource = &rtex->resource;
 212         resource->base.b = *templ;
 213         resource->base.vtbl = &r600_texture_vtbl;
 214         pipe_reference_init(&resource->base.b.reference, 1);
 215         resource->base.b.screen = screen;
 216         resource->bo = bo;
 217         rtex->depth = 0;
 218         rtex->pitch_override = whandle->stride;
 219         rtex->bpt = util_format_get_blocksize(templ->format);
 220         rtex->pitch[0] = whandle->stride;
 221         rtex->width[0] = templ->width0;
 222         rtex->height[0] = templ->height0;
 223         rtex->offset[0] = 0;
 224         rtex->size = align(rtex->pitch[0] * templ->height0, 64);
 225
 226         return &resource->base.b;
 227 }
 228
 229 static unsigned int r600_texture_is_referenced(struct pipe_context *context,
 230                                                 struct pipe_resource *texture,
 231                                                 unsigned face, unsigned level)
 232 {
 233         /* FIXME */
 234         return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 235 }
 236
 237 int r600_texture_depth_flush(struct pipe_context *ctx,
 238                              struct pipe_resource *texture)
 239 {
 240         struct r600_resource_texture *rtex = (struct r600_resource_texture*)texture;
 241         struct pipe_resource resource;
 242
 243         if (rtex->flushed_depth_texture)
 244                 goto out;
 245
 246         resource.target = PIPE_TEXTURE_2D;
 247         resource.format = texture->format;
 248         resource.width0 = texture->width0;
 249         resource.height0 = texture->height0;
 250         resource.depth0 = 0;
 251         resource.last_level = 0;
 252         resource.nr_samples = 0;
 253         resource.usage = PIPE_USAGE_DYNAMIC;
 254         resource.bind = 0;
 255         resource.flags = 0;
 256
 257         resource.bind |= PIPE_BIND_RENDER_TARGET;
 258
 259         rtex->flushed_depth_texture = ctx->screen->resource_create(ctx->screen, &resource);
 260         if (rtex->flushed_depth_texture == NULL) {
 261                 R600_ERR("failed to create temporary texture to hold untiled copy\n");
 262                 return -ENOMEM;
 263         }
 264
 265 out:
 266         r600_blit_uncompress_depth(ctx, rtex);
 267         return 0;
 268 }
 269
 270 struct pipe_transfer* r600_texture_get_transfer(struct pipe_context *ctx,
 271                                                 struct pipe_resource *texture,
 272                                                 struct pipe_subresource sr,
 273                                                 unsigned usage,
 274                                                 const struct pipe_box *box)
 275 {
 276         struct r600_resource_texture *rtex = (struct r600_resource_texture*)texture;
 277         struct pipe_resource resource;
 278         struct r600_transfer *trans;
 279         int r;
 280
 281         trans = CALLOC_STRUCT(r600_transfer);
 282         if (trans == NULL)
 283                 return NULL;
 284         pipe_resource_reference(&trans->transfer.resource, texture);
 285         trans->transfer.sr = sr;
 286         trans->transfer.usage = usage;
 287         trans->transfer.box = *box;
 288         trans->transfer.stride = rtex->pitch[sr.level];
 289         trans->offset = r600_texture_get_offset(rtex, sr.level, box->z, sr.face);
 290         if (rtex->depth) {
 291                 r = r600_texture_depth_flush(ctx, texture);
 292                 if (r < 0) {
 293                         R600_ERR("failed to create temporary texture to hold untiled copy\n");
 294                         pipe_resource_reference(&trans->transfer.resource, NULL);
 295                         FREE(trans);
 296                         return NULL;
 297                 }
 298         } else if (rtex->tiled) {
 299                 resource.target = PIPE_TEXTURE_2D;
 300                 resource.format = texture->format;
 301                 resource.width0 = box->width;
 302                 resource.height0 = box->height;
 303                 resource.depth0 = 0;
 304                 resource.last_level = 0;
 305                 resource.nr_samples = 0;
 306                 resource.usage = PIPE_USAGE_DYNAMIC;
 307                 resource.bind = 0;
 308                 resource.flags = 0;
 309                 /* For texture reading, the temporary (detiled) texture is used as
 310                  * a render target when blitting from a tiled texture. */
 311                 if (usage & PIPE_TRANSFER_READ) {
 312                         resource.bind |= PIPE_BIND_RENDER_TARGET;
 313                 }
 314                 /* For texture writing, the temporary texture is used as a sampler
 315                  * when blitting into a tiled texture. */
 316                 if (usage & PIPE_TRANSFER_WRITE) {
 317                         resource.bind |= PIPE_BIND_SAMPLER_VIEW;
 318                 }
 319                 /* Create the temporary texture. */
 320                 trans->linear_texture = ctx->screen->resource_create(ctx->screen, &resource);
 321                 if (trans->linear_texture == NULL) {
 322                         R600_ERR("failed to create temporary texture to hold untiled copy\n");
 323                         pipe_resource_reference(&trans->transfer.resource, NULL);
 324                         FREE(trans);
 325                         return NULL;
 326                 }
 327                 if (usage & PIPE_TRANSFER_READ) {
 328                         /* We cannot map a tiled texture directly because the data is
 329                          * in a different order, therefore we do detiling using a blit. */
 330                         r600_copy_from_tiled_texture(ctx, trans);
 331                         /* Always referenced in the blit. */
 332                         ctx->flush(ctx, 0, NULL);
 333                 }
 334         }
 335         return &trans->transfer;
 336 }
 337
 338 void r600_texture_transfer_destroy(struct pipe_context *ctx,
 339                                    struct pipe_transfer *transfer)
 340 {
 341         struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
 342         struct r600_resource_texture *rtex = (struct r600_resource_texture*)transfer->resource;
 343
 344         if (rtransfer->linear_texture) {
 345                 pipe_resource_reference(&rtransfer->linear_texture, NULL);
 346         }
 347         if (rtex->flushed_depth_texture) {
 348                 if (transfer->usage & PIPE_TRANSFER_WRITE) {
 349                         // TODO
 350                 }
 351                 pipe_resource_reference(&rtex->flushed_depth_texture, NULL);
 352         }
 353         pipe_resource_reference(&transfer->resource, NULL);
 354         FREE(transfer);
 355 }
 356
 357 void* r600_texture_transfer_map(struct pipe_context *ctx,
 358                                 struct pipe_transfer* transfer)
 359 {
 360         struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
 361         struct radeon_ws_bo *bo;
 362         enum pipe_format format = transfer->resource->format;
 363         struct radeon *radeon = (struct radeon *)ctx->screen->winsys;
 364         unsigned long offset = 0;
 365         char *map;
 366
 367         if (rtransfer->linear_texture) {
 368                 bo = ((struct r600_resource *)rtransfer->linear_texture)->bo;
 369         } else {
 370                 struct r600_resource_texture *rtex = (struct r600_resource_texture*)transfer->resource;
 371
 372                 if (rtex->flushed_depth_texture)
 373                         bo = ((struct r600_resource *)rtex->flushed_depth_texture)->bo;
 374                 else
 375                         bo = ((struct r600_resource *)transfer->resource)->bo;
 376
 377                 offset = rtransfer->offset +
 378                         transfer->box.y / util_format_get_blockheight(format) * transfer->stride +
 379                         transfer->box.x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 380         }
 381         map = radeon_ws_bo_map(radeon, bo, 0, ctx);
 382         if (!map) {
 383                 return NULL;
 384         }
 385
 386         return map + offset;
 387 }
 388
 389 void r600_texture_transfer_unmap(struct pipe_context *ctx,
 390                                  struct pipe_transfer* transfer)
 391 {
 392         struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
 393         struct radeon *radeon = (struct radeon *)ctx->screen->winsys;
 394         struct radeon_ws_bo *bo;
 395
 396         if (rtransfer->linear_texture) {
 397                 bo = ((struct r600_resource *)rtransfer->linear_texture)->bo;
 398         } else {
 399                 struct r600_resource_texture *rtex = (struct r600_resource_texture*)transfer->resource;
 400
 401                 if (rtex->flushed_depth_texture) {
 402                         bo = ((struct r600_resource *)rtex->flushed_depth_texture)->bo;
 403                 } else {
 404                         bo = ((struct r600_resource *)transfer->resource)->bo;
 405                 }
 406         }
 407         radeon_ws_bo_unmap(radeon, bo);
 408 }
 409
 410 struct u_resource_vtbl r600_texture_vtbl =
 411 {
 412         u_default_resource_get_handle,  /* get_handle */
 413         r600_texture_destroy,           /* resource_destroy */
 414         r600_texture_is_referenced,     /* is_resource_referenced */
 415         r600_texture_get_transfer,      /* get_transfer */
 416         r600_texture_transfer_destroy,  /* transfer_destroy */
 417         r600_texture_transfer_map,      /* transfer_map */
 418         u_default_transfer_flush_region,/* transfer_flush_region */
 419         r600_texture_transfer_unmap,    /* transfer_unmap */
 420         u_default_transfer_inline_write /* transfer_inline_write */
 421 };
 422
 423 void r600_init_screen_texture_functions(struct pipe_screen *screen)
 424 {
 425         screen->get_tex_surface = r600_get_tex_surface;
 426         screen->tex_surface_destroy = r600_tex_surface_destroy;
 427 }
 428
 429 static unsigned r600_get_swizzle_combined(const unsigned char *swizzle_format,
 430                 const unsigned char *swizzle_view)
 431 {
 432         unsigned i;
 433         unsigned char swizzle[4];
 434         unsigned result = 0;
 435         const uint32_t swizzle_shift[4] = {
 436                 16, 19, 22, 25,
 437         };
 438         const uint32_t swizzle_bit[4] = {
 439                 0, 1, 2, 3,
 440         };
 441
 442         if (swizzle_view) {
 443                 /* Combine two sets of swizzles. */
 444                 for (i = 0; i < 4; i++) {
 445                         swizzle[i] = swizzle_view[i] <= UTIL_FORMAT_SWIZZLE_W ?
 446                                 swizzle_format[swizzle_view[i]] : swizzle_view[i];
 447                 }
 448         } else {
 449                 memcpy(swizzle, swizzle_format, 4);
 450         }
 451
 452         /* Get swizzle. */
 453         for (i = 0; i < 4; i++) {
 454                 switch (swizzle[i]) {
 455                 case UTIL_FORMAT_SWIZZLE_Y:
 456                         result |= swizzle_bit[1] << swizzle_shift[i];
 457                         break;
 458                 case UTIL_FORMAT_SWIZZLE_Z:
 459                         result |= swizzle_bit[2] << swizzle_shift[i];
 460                         break;
 461                 case UTIL_FORMAT_SWIZZLE_W:
 462                         result |= swizzle_bit[3] << swizzle_shift[i];
 463                         break;
 464                 case UTIL_FORMAT_SWIZZLE_0:
 465                         result |= V_038010_SQ_SEL_0 << swizzle_shift[i];
 466                         break;
 467                 case UTIL_FORMAT_SWIZZLE_1:
 468                         result |= V_038010_SQ_SEL_1 << swizzle_shift[i];
 469                         break;
 470                 default: /* UTIL_FORMAT_SWIZZLE_X */
 471                         result |= swizzle_bit[0] << swizzle_shift[i];
 472                 }
 473         }
 474         return result;
 475 }
 476
 477 /* texture format translate */
 478 uint32_t r600_translate_texformat(enum pipe_format format,
 479                                   const unsigned char *swizzle_view,
 480                                   uint32_t *word4_p, uint32_t *yuv_format_p)
 481 {
 482         uint32_t result = 0, word4 = 0, yuv_format = 0;
 483         const struct util_format_description *desc;
 484         boolean uniform = TRUE;
 485         int i;
 486         const uint32_t sign_bit[4] = {
 487                 S_038010_FORMAT_COMP_X(V_038010_SQ_FORMAT_COMP_SIGNED),
 488                 S_038010_FORMAT_COMP_Y(V_038010_SQ_FORMAT_COMP_SIGNED),
 489                 S_038010_FORMAT_COMP_Z(V_038010_SQ_FORMAT_COMP_SIGNED),
 490                 S_038010_FORMAT_COMP_W(V_038010_SQ_FORMAT_COMP_SIGNED)
 491         };
 492         desc = util_format_description(format);
 493
 494         word4 |= r600_get_swizzle_combined(desc->swizzle, swizzle_view);
 495
 496         /* Colorspace (return non-RGB formats directly). */
 497         switch (desc->colorspace) {
 498                 /* Depth stencil formats */
 499         case UTIL_FORMAT_COLORSPACE_ZS:
 500                 switch (format) {
 501                 case PIPE_FORMAT_Z16_UNORM:
 502                         result = V_0280A0_COLOR_16;
 503                         goto out_word4;
 504                 case PIPE_FORMAT_Z24X8_UNORM:
 505                 case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 506                         result = V_0280A0_COLOR_8_24;
 507                         goto out_word4;
 508                 case PIPE_FORMAT_X8Z24_UNORM:
 509                 case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 510                         result = V_0280A0_COLOR_24_8;
 511                         goto out_word4;
 512                 default:
 513                         goto out_unknown;
 514                 }
 515
 516         case UTIL_FORMAT_COLORSPACE_YUV:
 517                 yuv_format |= (1 << 30);
 518                 switch (format) {
 519                 case PIPE_FORMAT_UYVY:
 520                 case PIPE_FORMAT_YUYV:
 521                 default:
 522                         break;
 523                 }
 524                 goto out_unknown; /* TODO */
 525
 526         case UTIL_FORMAT_COLORSPACE_SRGB:
 527                 word4 |= S_038010_FORCE_DEGAMMA(1);
 528                 if (format == PIPE_FORMAT_L8A8_SRGB || format == PIPE_FORMAT_L8_SRGB)
 529                         goto out_unknown; /* fails for some reason - TODO */
 530                 break;
 531
 532         default:
 533                 break;
 534         }
 535
 536         /* S3TC formats. TODO */
 537         if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 538                 goto out_unknown;
 539         }
 540
 541
 542         for (i = 0; i < desc->nr_channels; i++) {
 543                 if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 544                         word4 |= sign_bit[i];
 545                 }
 546         }
 547
 548         /* R8G8Bx_SNORM - TODO CxV8U8 */
 549
 550         /* RGTC - TODO */
 551
 552         /* See whether the components are of the same size. */
 553         for (i = 1; i < desc->nr_channels; i++) {
 554                 uniform = uniform && desc->channel[0].size == desc->channel[i].size;
 555         }
 556
 557         /* Non-uniform formats. */
 558         if (!uniform) {
 559                 switch(desc->nr_channels) {
 560                 case 3:
 561                         if (desc->channel[0].size == 5 &&
 562                             desc->channel[1].size == 6 &&
 563                             desc->channel[2].size == 5) {
 564                                 result = V_0280A0_COLOR_5_6_5;
 565                                 goto out_word4;
 566                         }
 567                         goto out_unknown;
 568                 case 4:
 569                         if (desc->channel[0].size == 5 &&
 570                             desc->channel[1].size == 5 &&
 571                             desc->channel[2].size == 5 &&
 572                             desc->channel[3].size == 1) {
 573                                 result = V_0280A0_COLOR_1_5_5_5;
 574                                 goto out_word4;
 575                         }
 576                         if (desc->channel[0].size == 10 &&
 577                             desc->channel[1].size == 10 &&
 578                             desc->channel[2].size == 10 &&
 579                             desc->channel[3].size == 2) {
 580                                 result = V_0280A0_COLOR_10_10_10_2;
 581                                 goto out_word4;
 582                         }
 583                         goto out_unknown;
 584                 }
 585                 goto out_unknown;
 586         }
 587
 588         /* uniform formats */
 589         switch (desc->channel[0].type) {
 590         case UTIL_FORMAT_TYPE_UNSIGNED:
 591         case UTIL_FORMAT_TYPE_SIGNED:
 592                 if (!desc->channel[0].normalized &&
 593                     desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
 594                         goto out_unknown;
 595                 }
 596
 597                 switch (desc->channel[0].size) {
 598                 case 4:
 599                         switch (desc->nr_channels) {
 600                         case 2:
 601                                 result = V_0280A0_COLOR_4_4;
 602                                 goto out_word4;
 603                         case 4:
 604                                 result = V_0280A0_COLOR_4_4_4_4;
 605                                 goto out_word4;
 606                         }
 607                         goto out_unknown;
 608                 case 8:
 609                         switch (desc->nr_channels) {
 610                         case 1:
 611                                 result = V_0280A0_COLOR_8;
 612                                 goto out_word4;
 613                         case 2:
 614                                 result = V_0280A0_COLOR_8_8;
 615                                 goto out_word4;
 616                         case 4:
 617                                 result = V_0280A0_COLOR_8_8_8_8;
 618                                 goto out_word4;
 619                         }
 620                         goto out_unknown;
 621                 case 16:
 622                         switch (desc->nr_channels) {
 623                         case 1:
 624                                 result = V_0280A0_COLOR_16;
 625                                 goto out_word4;
 626                         case 2:
 627                                 result = V_0280A0_COLOR_16_16;
 628                                 goto out_word4;
 629                         case 4:
 630                                 result = V_0280A0_COLOR_16_16_16_16;
 631                                 goto out_word4;
 632                         }
 633                 }
 634                 goto out_unknown;
 635
 636         case UTIL_FORMAT_TYPE_FLOAT:
 637                 switch (desc->channel[0].size) {
 638                 case 16:
 639                         switch (desc->nr_channels) {
 640                         case 1:
 641                                 result = V_0280A0_COLOR_16_FLOAT;
 642                                 goto out_word4;
 643                         case 2:
 644                                 result = V_0280A0_COLOR_16_16_FLOAT;
 645                                 goto out_word4;
 646                         case 4:
 647                                 result = V_0280A0_COLOR_16_16_16_16_FLOAT;
 648                                 goto out_word4;
 649                         }
 650                         goto out_unknown;
 651                 case 32:
 652                         switch (desc->nr_channels) {
 653                         case 1:
 654                                 result = V_0280A0_COLOR_32_FLOAT;
 655                                 goto out_word4;
 656                         case 2:
 657                                 result = V_0280A0_COLOR_32_32_FLOAT;
 658                                 goto out_word4;
 659                         case 4:
 660                                 result = V_0280A0_COLOR_32_32_32_32_FLOAT;
 661                                 goto out_word4;
 662                         }
 663                 }
 664
 665         }
 666 out_word4:
 667         if (word4_p)
 668                 *word4_p = word4;
 669         if (yuv_format_p)
 670                 *yuv_format_p = yuv_format;
 671         return result;
 672 out_unknown:
 673 //      R600_ERR("Unable to handle texformat %d %s\n", format, util_format_name(format));
 674         return ~0;
 675 }