src/gallium/drivers/r600/r600_state_inlines.h

   1 /*
   2  * Copyright 2010 Red Hat Inc.
   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 #ifndef R600_STATE_INLINES_H
  24 #define R600_STATE_INLINES_H
  25
  26 #include "util/u_format.h"
  27 #include "r600d.h"
  28 #include "r600_formats.h"
  29
  30 static INLINE uint32_t r600_translate_blend_function(int blend_func)
  31 {
  32         switch (blend_func) {
  33         case PIPE_BLEND_ADD:
  34                 return V_028804_COMB_DST_PLUS_SRC;
  35         case PIPE_BLEND_SUBTRACT:
  36                 return V_028804_COMB_SRC_MINUS_DST;
  37         case PIPE_BLEND_REVERSE_SUBTRACT:
  38                 return V_028804_COMB_DST_MINUS_SRC;
  39         case PIPE_BLEND_MIN:
  40                 return V_028804_COMB_MIN_DST_SRC;
  41         case PIPE_BLEND_MAX:
  42                 return V_028804_COMB_MAX_DST_SRC;
  43         default:
  44                 R600_ERR("Unknown blend function %d\n", blend_func);
  45                 assert(0);
  46                 break;
  47         }
  48         return 0;
  49 }
  50
  51 static INLINE uint32_t r600_translate_blend_factor(int blend_fact)
  52 {
  53         switch (blend_fact) {
  54         case PIPE_BLENDFACTOR_ONE:
  55                 return V_028804_BLEND_ONE;
  56         case PIPE_BLENDFACTOR_SRC_COLOR:
  57                 return V_028804_BLEND_SRC_COLOR;
  58         case PIPE_BLENDFACTOR_SRC_ALPHA:
  59                 return V_028804_BLEND_SRC_ALPHA;
  60         case PIPE_BLENDFACTOR_DST_ALPHA:
  61                 return V_028804_BLEND_DST_ALPHA;
  62         case PIPE_BLENDFACTOR_DST_COLOR:
  63                 return V_028804_BLEND_DST_COLOR;
  64         case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
  65                 return V_028804_BLEND_SRC_ALPHA_SATURATE;
  66         case PIPE_BLENDFACTOR_CONST_COLOR:
  67                 return V_028804_BLEND_CONST_COLOR;
  68         case PIPE_BLENDFACTOR_CONST_ALPHA:
  69                 return V_028804_BLEND_CONST_ALPHA;
  70         case PIPE_BLENDFACTOR_ZERO:
  71                 return V_028804_BLEND_ZERO;
  72         case PIPE_BLENDFACTOR_INV_SRC_COLOR:
  73                 return V_028804_BLEND_ONE_MINUS_SRC_COLOR;
  74         case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
  75                 return V_028804_BLEND_ONE_MINUS_SRC_ALPHA;
  76         case PIPE_BLENDFACTOR_INV_DST_ALPHA:
  77                 return V_028804_BLEND_ONE_MINUS_DST_ALPHA;
  78         case PIPE_BLENDFACTOR_INV_DST_COLOR:
  79                 return V_028804_BLEND_ONE_MINUS_DST_COLOR;
  80         case PIPE_BLENDFACTOR_INV_CONST_COLOR:
  81                 return V_028804_BLEND_ONE_MINUS_CONST_COLOR;
  82         case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
  83                 return V_028804_BLEND_ONE_MINUS_CONST_ALPHA;
  84         case PIPE_BLENDFACTOR_SRC1_COLOR:
  85                 return V_028804_BLEND_SRC1_COLOR;
  86         case PIPE_BLENDFACTOR_SRC1_ALPHA:
  87                 return V_028804_BLEND_SRC1_ALPHA;
  88         case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
  89                 return V_028804_BLEND_INV_SRC1_COLOR;
  90         case PIPE_BLENDFACTOR_INV_SRC1_ALPHA:
  91                 return V_028804_BLEND_INV_SRC1_ALPHA;
  92         default:
  93                 R600_ERR("Bad blend factor %d not supported!\n", blend_fact);
  94                 assert(0);
  95                 break;
  96         }
  97         return 0;
  98 }
  99
 100 static INLINE uint32_t r600_translate_stencil_op(int s_op)
 101 {
 102         switch (s_op) {
 103         case PIPE_STENCIL_OP_KEEP:
 104                 return V_028800_STENCIL_KEEP;
 105         case PIPE_STENCIL_OP_ZERO:
 106                 return V_028800_STENCIL_ZERO;
 107         case PIPE_STENCIL_OP_REPLACE:
 108                 return V_028800_STENCIL_REPLACE;
 109         case PIPE_STENCIL_OP_INCR:
 110                 return V_028800_STENCIL_INCR;
 111         case PIPE_STENCIL_OP_DECR:
 112                 return V_028800_STENCIL_DECR;
 113         case PIPE_STENCIL_OP_INCR_WRAP:
 114                 return V_028800_STENCIL_INCR_WRAP;
 115         case PIPE_STENCIL_OP_DECR_WRAP:
 116                 return V_028800_STENCIL_DECR_WRAP;
 117         case PIPE_STENCIL_OP_INVERT:
 118                 return V_028800_STENCIL_INVERT;
 119         default:
 120                 R600_ERR("Unknown stencil op %d", s_op);
 121                 assert(0);
 122                 break;
 123         }
 124         return 0;
 125 }
 126
 127 static INLINE uint32_t r600_translate_fill(uint32_t func)
 128 {
 129         switch(func) {
 130         case PIPE_POLYGON_MODE_FILL:
 131                 return 2;
 132         case PIPE_POLYGON_MODE_LINE:
 133                 return 1;
 134         case PIPE_POLYGON_MODE_POINT:
 135                 return 0;
 136         default:
 137                 assert(0);
 138                 return 0;
 139         }
 140 }
 141
 142 /* translates straight */
 143 static INLINE uint32_t r600_translate_ds_func(int func)
 144 {
 145         return func;
 146 }
 147
 148 static inline unsigned r600_tex_wrap(unsigned wrap)
 149 {
 150         switch (wrap) {
 151         default:
 152         case PIPE_TEX_WRAP_REPEAT:
 153                 return V_03C000_SQ_TEX_WRAP;
 154         case PIPE_TEX_WRAP_CLAMP:
 155                 return V_03C000_SQ_TEX_CLAMP_HALF_BORDER;
 156         case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
 157                 return V_03C000_SQ_TEX_CLAMP_LAST_TEXEL;
 158         case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
 159                 return V_03C000_SQ_TEX_CLAMP_BORDER;
 160         case PIPE_TEX_WRAP_MIRROR_REPEAT:
 161                 return V_03C000_SQ_TEX_MIRROR;
 162         case PIPE_TEX_WRAP_MIRROR_CLAMP:
 163                 return V_03C000_SQ_TEX_MIRROR_ONCE_HALF_BORDER;
 164         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
 165                 return V_03C000_SQ_TEX_MIRROR_ONCE_LAST_TEXEL;
 166         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
 167                 return V_03C000_SQ_TEX_MIRROR_ONCE_BORDER;
 168         }
 169 }
 170
 171 static inline unsigned r600_tex_filter(unsigned filter)
 172 {
 173         switch (filter) {
 174         default:
 175         case PIPE_TEX_FILTER_NEAREST:
 176                 return V_03C000_SQ_TEX_XY_FILTER_POINT;
 177         case PIPE_TEX_FILTER_LINEAR:
 178                 return V_03C000_SQ_TEX_XY_FILTER_BILINEAR;
 179         }
 180 }
 181
 182 static inline unsigned r600_tex_mipfilter(unsigned filter)
 183 {
 184         switch (filter) {
 185         case PIPE_TEX_MIPFILTER_NEAREST:
 186                 return V_03C000_SQ_TEX_Z_FILTER_POINT;
 187         case PIPE_TEX_MIPFILTER_LINEAR:
 188                 return V_03C000_SQ_TEX_Z_FILTER_LINEAR;
 189         default:
 190         case PIPE_TEX_MIPFILTER_NONE:
 191                 return V_03C000_SQ_TEX_Z_FILTER_NONE;
 192         }
 193 }
 194
 195 static inline unsigned r600_tex_compare(unsigned compare)
 196 {
 197         switch (compare) {
 198         default:
 199         case PIPE_FUNC_NEVER:
 200                 return V_03C000_SQ_TEX_DEPTH_COMPARE_NEVER;
 201         case PIPE_FUNC_LESS:
 202                 return V_03C000_SQ_TEX_DEPTH_COMPARE_LESS;
 203         case PIPE_FUNC_EQUAL:
 204                 return V_03C000_SQ_TEX_DEPTH_COMPARE_EQUAL;
 205         case PIPE_FUNC_LEQUAL:
 206                 return V_03C000_SQ_TEX_DEPTH_COMPARE_LESSEQUAL;
 207         case PIPE_FUNC_GREATER:
 208                 return V_03C000_SQ_TEX_DEPTH_COMPARE_GREATER;
 209         case PIPE_FUNC_NOTEQUAL:
 210                 return V_03C000_SQ_TEX_DEPTH_COMPARE_NOTEQUAL;
 211         case PIPE_FUNC_GEQUAL:
 212                 return V_03C000_SQ_TEX_DEPTH_COMPARE_GREATEREQUAL;
 213         case PIPE_FUNC_ALWAYS:
 214                 return V_03C000_SQ_TEX_DEPTH_COMPARE_ALWAYS;
 215         }
 216 }
 217
 218 static inline unsigned r600_tex_swizzle(unsigned swizzle)
 219 {
 220         switch (swizzle) {
 221         case PIPE_SWIZZLE_RED:
 222                 return V_038010_SQ_SEL_X;
 223         case PIPE_SWIZZLE_GREEN:
 224                 return V_038010_SQ_SEL_Y;
 225         case PIPE_SWIZZLE_BLUE:
 226                 return V_038010_SQ_SEL_Z;
 227         case PIPE_SWIZZLE_ALPHA:
 228                 return V_038010_SQ_SEL_W;
 229         case PIPE_SWIZZLE_ZERO:
 230                 return V_038010_SQ_SEL_0;
 231         default:
 232         case PIPE_SWIZZLE_ONE:
 233                 return V_038010_SQ_SEL_1;
 234         }
 235 }
 236
 237 static inline unsigned r600_format_type(unsigned format_type)
 238 {
 239         switch (format_type) {
 240         default:
 241         case UTIL_FORMAT_TYPE_UNSIGNED:
 242                 return V_038010_SQ_FORMAT_COMP_UNSIGNED;
 243         case UTIL_FORMAT_TYPE_SIGNED:
 244                 return V_038010_SQ_FORMAT_COMP_SIGNED;
 245         case UTIL_FORMAT_TYPE_FIXED:
 246                 return V_038010_SQ_FORMAT_COMP_UNSIGNED_BIASED;
 247         }
 248 }
 249
 250 static inline unsigned r600_tex_dim(unsigned dim)
 251 {
 252         switch (dim) {
 253         default:
 254         case PIPE_TEXTURE_1D:
 255                 return V_038000_SQ_TEX_DIM_1D;
 256         case PIPE_TEXTURE_2D:
 257         case PIPE_TEXTURE_RECT:
 258                 return V_038000_SQ_TEX_DIM_2D;
 259         case PIPE_TEXTURE_3D:
 260                 return V_038000_SQ_TEX_DIM_3D;
 261         case PIPE_TEXTURE_CUBE:
 262                 return V_038000_SQ_TEX_DIM_CUBEMAP;
 263         }
 264 }
 265
 266 static inline uint32_t r600_translate_dbformat(enum pipe_format format)
 267 {
 268         switch (format) {
 269         case PIPE_FORMAT_Z16_UNORM:
 270                 return V_028010_DEPTH_16;
 271         case PIPE_FORMAT_Z24X8_UNORM:
 272                 return V_028010_DEPTH_X8_24;
 273         case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 274                 return V_028010_DEPTH_8_24;
 275         default:
 276                 return ~0;
 277         }
 278 }
 279
 280 static inline uint32_t r600_translate_colorswap(enum pipe_format format)
 281 {
 282         switch (format) {
 283                 /* 8-bit buffers. */
 284         case PIPE_FORMAT_A8_UNORM:
 285                 return V_0280A0_SWAP_ALT_REV;
 286         case PIPE_FORMAT_I8_UNORM:
 287         case PIPE_FORMAT_L8_UNORM:
 288         case PIPE_FORMAT_R8_UNORM:
 289         case PIPE_FORMAT_R8_SNORM:
 290                 return V_0280A0_SWAP_STD;
 291
 292                 /* 16-bit buffers. */
 293         case PIPE_FORMAT_B5G6R5_UNORM:
 294                 return V_0280A0_SWAP_STD_REV;
 295
 296         case PIPE_FORMAT_B5G5R5A1_UNORM:
 297         case PIPE_FORMAT_B5G5R5X1_UNORM:
 298                 return V_0280A0_SWAP_ALT;
 299
 300         case PIPE_FORMAT_B4G4R4A4_UNORM:
 301         case PIPE_FORMAT_B4G4R4X4_UNORM:
 302                 return V_0280A0_SWAP_ALT;
 303
 304         case PIPE_FORMAT_Z16_UNORM:
 305                 return V_0280A0_SWAP_STD;
 306
 307         case PIPE_FORMAT_L8A8_UNORM:
 308         case PIPE_FORMAT_R8G8_UNORM:
 309                 return V_0280A0_SWAP_STD;
 310
 311         case PIPE_FORMAT_R16_UNORM:
 312                 return V_0280A0_SWAP_STD;
 313
 314                 /* 32-bit buffers. */
 315
 316         case PIPE_FORMAT_A8B8G8R8_SRGB:
 317                 return V_0280A0_SWAP_STD_REV;
 318         case PIPE_FORMAT_B8G8R8A8_SRGB:
 319                 return V_0280A0_SWAP_ALT;
 320
 321         case PIPE_FORMAT_B8G8R8A8_UNORM:
 322         case PIPE_FORMAT_B8G8R8X8_UNORM:
 323                 return V_0280A0_SWAP_ALT;
 324
 325         case PIPE_FORMAT_A8R8G8B8_UNORM:
 326         case PIPE_FORMAT_X8R8G8B8_UNORM:
 327                 return V_0280A0_SWAP_ALT_REV;
 328         case PIPE_FORMAT_R8G8B8A8_SNORM:
 329         case PIPE_FORMAT_R8G8B8X8_UNORM:
 330                 return V_0280A0_SWAP_STD;
 331
 332         case PIPE_FORMAT_A8B8G8R8_UNORM:
 333         case PIPE_FORMAT_X8B8G8R8_UNORM:
 334                 //        case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 335                 return V_0280A0_SWAP_STD_REV;
 336
 337         case PIPE_FORMAT_Z24X8_UNORM:
 338         case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 339                 return V_0280A0_SWAP_STD;
 340
 341         case PIPE_FORMAT_X8Z24_UNORM:
 342         case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 343                 return V_0280A0_SWAP_STD;
 344
 345         case PIPE_FORMAT_R10G10B10A2_UNORM:
 346         case PIPE_FORMAT_R10G10B10X2_SNORM:
 347         case PIPE_FORMAT_B10G10R10A2_UNORM:
 348         case PIPE_FORMAT_R10SG10SB10SA2U_NORM:
 349                 return V_0280A0_SWAP_STD_REV;
 350
 351         case PIPE_FORMAT_R16G16_UNORM:
 352                 return V_0280A0_SWAP_STD;
 353
 354                 /* 64-bit buffers. */
 355         case PIPE_FORMAT_R16G16B16A16_UNORM:
 356         case PIPE_FORMAT_R16G16B16A16_SNORM:
 357                 //              return FMT_16_16_16_16;
 358         case PIPE_FORMAT_R16G16B16A16_FLOAT:
 359                 //              return FMT_16_16_16_16_FLOAT;
 360
 361                 /* 128-bit buffers. */
 362         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 363                 //              return FMT_32_32_32_32_FLOAT;
 364                 return 0;
 365         default:
 366                 R600_ERR("unsupported colorswap format %d\n", format);
 367                 return ~0;
 368         }
 369         return ~0;
 370 }
 371
 372 static INLINE uint32_t r600_translate_colorformat(enum pipe_format format)
 373 {
 374         switch (format) {
 375                 /* 8-bit buffers. */
 376         case PIPE_FORMAT_A8_UNORM:
 377         case PIPE_FORMAT_I8_UNORM:
 378         case PIPE_FORMAT_L8_UNORM:
 379         case PIPE_FORMAT_R8_UNORM:
 380         case PIPE_FORMAT_R8_SNORM:
 381                 return V_0280A0_COLOR_8;
 382
 383                 /* 16-bit buffers. */
 384         case PIPE_FORMAT_B5G6R5_UNORM:
 385                 return V_0280A0_COLOR_5_6_5;
 386
 387         case PIPE_FORMAT_B5G5R5A1_UNORM:
 388         case PIPE_FORMAT_B5G5R5X1_UNORM:
 389                 return V_0280A0_COLOR_1_5_5_5;
 390
 391         case PIPE_FORMAT_B4G4R4A4_UNORM:
 392         case PIPE_FORMAT_B4G4R4X4_UNORM:
 393                 return V_0280A0_COLOR_4_4_4_4;
 394
 395         case PIPE_FORMAT_Z16_UNORM:
 396                 return V_0280A0_COLOR_16;
 397
 398         case PIPE_FORMAT_L8A8_UNORM:
 399         case PIPE_FORMAT_R8G8_UNORM:
 400                 return V_0280A0_COLOR_8_8;
 401
 402         case PIPE_FORMAT_R16_UNORM:
 403                 return V_0280A0_COLOR_16;
 404
 405                 /* 32-bit buffers. */
 406         case PIPE_FORMAT_A8B8G8R8_SRGB:
 407         case PIPE_FORMAT_A8B8G8R8_UNORM:
 408         case PIPE_FORMAT_A8R8G8B8_UNORM:
 409         case PIPE_FORMAT_B8G8R8A8_SRGB:
 410         case PIPE_FORMAT_B8G8R8A8_UNORM:
 411         case PIPE_FORMAT_B8G8R8X8_UNORM:
 412         case PIPE_FORMAT_R8G8B8A8_SNORM:
 413         case PIPE_FORMAT_R8G8B8A8_UNORM:
 414         case PIPE_FORMAT_R8G8B8X8_UNORM:
 415         case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 416         case PIPE_FORMAT_X8B8G8R8_UNORM:
 417         case PIPE_FORMAT_X8R8G8B8_UNORM:
 418         case PIPE_FORMAT_R8G8B8_UNORM:
 419                 return V_0280A0_COLOR_8_8_8_8;
 420
 421         case PIPE_FORMAT_R10G10B10A2_UNORM:
 422         case PIPE_FORMAT_R10G10B10X2_SNORM:
 423         case PIPE_FORMAT_B10G10R10A2_UNORM:
 424         case PIPE_FORMAT_R10SG10SB10SA2U_NORM:
 425                 return V_0280A0_COLOR_10_10_10_2;
 426
 427         case PIPE_FORMAT_Z24X8_UNORM:
 428         case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 429                 return V_0280A0_COLOR_8_24;
 430
 431         case PIPE_FORMAT_X8Z24_UNORM:
 432         case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 433                 return V_0280A0_COLOR_24_8;
 434
 435         case PIPE_FORMAT_R32_FLOAT:
 436                 return V_0280A0_COLOR_32_FLOAT;
 437
 438         case PIPE_FORMAT_R16G16_FLOAT:
 439                 return V_0280A0_COLOR_16_16_FLOAT;
 440
 441         case PIPE_FORMAT_R16G16_SSCALED:
 442         case PIPE_FORMAT_R16G16_UNORM:
 443                 return V_0280A0_COLOR_16_16;
 444
 445
 446                 /* 64-bit buffers. */
 447         case PIPE_FORMAT_R16G16B16_USCALED:
 448         case PIPE_FORMAT_R16G16B16A16_USCALED:
 449         case PIPE_FORMAT_R16G16B16_SSCALED:
 450         case PIPE_FORMAT_R16G16B16A16_SSCALED:
 451         case PIPE_FORMAT_R16G16B16A16_UNORM:
 452         case PIPE_FORMAT_R16G16B16A16_SNORM:
 453                 return V_0280A0_COLOR_16_16_16_16;
 454
 455         case PIPE_FORMAT_R16G16B16_FLOAT:
 456         case PIPE_FORMAT_R16G16B16A16_FLOAT:
 457                 return V_0280A0_COLOR_16_16_16_16_FLOAT;
 458
 459         case PIPE_FORMAT_R32G32_FLOAT:
 460                 return V_0280A0_COLOR_32_32_FLOAT;
 461
 462         case PIPE_FORMAT_R32G32_USCALED:
 463         case PIPE_FORMAT_R32G32_SSCALED:
 464                 return V_0280A0_COLOR_32_32;
 465
 466                 /* 128-bit buffers. */
 467         case PIPE_FORMAT_R32G32B32_FLOAT:
 468                 return V_0280A0_COLOR_32_32_32_FLOAT;
 469         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 470                 return V_0280A0_COLOR_32_32_32_32_FLOAT;
 471
 472                 /* YUV buffers. */
 473         case PIPE_FORMAT_UYVY:
 474         case PIPE_FORMAT_YUYV:
 475         default:
 476                 //R600_ERR("unsupported color format %d %s\n", format, util_format_name(format));
 477                 return ~0; /* Unsupported. */
 478         }
 479 }
 480
 481 static INLINE boolean r600_is_sampler_format_supported(enum pipe_format format)
 482 {
 483         return r600_translate_texformat(format, NULL, NULL, NULL) != ~0;
 484 }
 485
 486 static INLINE boolean r600_is_colorbuffer_format_supported(enum pipe_format format)
 487 {
 488         return r600_translate_colorformat(format) != ~0 &&
 489                 r600_translate_colorswap(format) != ~0;
 490 }
 491
 492 static INLINE boolean r600_is_zs_format_supported(enum pipe_format format)
 493 {
 494         return r600_translate_dbformat(format) != ~0;
 495 }
 496
 497 static INLINE boolean r600_is_vertex_format_supported(enum pipe_format format)
 498 {
 499         return r600_translate_colorformat(format) != ~0;
 500 }
 501
 502 static INLINE uint32_t r600_translate_vertex_data_type(enum pipe_format format)
 503 {
 504         uint32_t result = 0;
 505         const struct util_format_description *desc;
 506         unsigned i;
 507
 508         desc = util_format_description(format);
 509         if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN) {
 510                 goto out_unknown;
 511         }
 512
 513         /* Find the first non-VOID channel. */
 514         for (i = 0; i < 4; i++) {
 515                 if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 516                         break;
 517                 }
 518         }
 519
 520         switch (desc->channel[i].type) {
 521                 /* Half-floats, floats, doubles */
 522         case UTIL_FORMAT_TYPE_FLOAT:
 523                 switch (desc->channel[i].size) {
 524                 case 16:
 525                         switch (desc->nr_channels) {
 526                         case 1:
 527                                 result = FMT_16_FLOAT;
 528                                 break;
 529                         case 2:
 530                                 result = FMT_16_16_FLOAT;
 531                                 break;
 532                         case 3:
 533                                 result = FMT_16_16_16_FLOAT;
 534                                 break;
 535                         case 4:
 536                                 result = FMT_16_16_16_16_FLOAT;
 537                                 break;
 538                         }
 539                         break;
 540                 case 32:
 541                         switch (desc->nr_channels) {
 542                         case 1:
 543                                 result = FMT_32_FLOAT;
 544                                 break;
 545                         case 2:
 546                                 result = FMT_32_32_FLOAT;
 547                                 break;
 548                         case 3:
 549                                 result = FMT_32_32_32_FLOAT;
 550                                 break;
 551                         case 4:
 552                                 result = FMT_32_32_32_32_FLOAT;
 553                                 break;
 554                         }
 555                         break;
 556                 default:
 557                         goto out_unknown;
 558                 }
 559                 break;
 560                 /* Unsigned ints */
 561         case UTIL_FORMAT_TYPE_UNSIGNED:
 562                 /* Signed ints */
 563         case UTIL_FORMAT_TYPE_SIGNED:
 564                 switch (desc->channel[i].size) {
 565                 case 8:
 566                         switch (desc->nr_channels) {
 567                         case 1:
 568                                 result = FMT_8;
 569                                 break;
 570                         case 2:
 571                                 result = FMT_8_8;
 572                                 break;
 573                         case 3:
 574                         //      result = FMT_8_8_8; /* fails piglit draw-vertices test */
 575                         //      break;
 576                         case 4:
 577                                 result = FMT_8_8_8_8;
 578                                 break;
 579                         }
 580                         break;
 581                 case 16:
 582                         switch (desc->nr_channels) {
 583                         case 1:
 584                                 result = FMT_16;
 585                                 break;
 586                         case 2:
 587                                 result = FMT_16_16;
 588                                 break;
 589                         case 3:
 590                         //      result = FMT_16_16_16; /* fails piglit draw-vertices test */
 591                         //      break;
 592                         case 4:
 593                                 result = FMT_16_16_16_16;
 594                                 break;
 595                         }
 596                         break;
 597                 case 32:
 598                         switch (desc->nr_channels) {
 599                         case 1:
 600                                 result = FMT_32;
 601                                 break;
 602                         case 2:
 603                                 result = FMT_32_32;
 604                                 break;
 605                         case 3:
 606                                 result = FMT_32_32_32;
 607                                 break;
 608                         case 4:
 609                                 result = FMT_32_32_32_32;
 610                                 break;
 611                         }
 612                         break;
 613                 default:
 614                         goto out_unknown;
 615                 }
 616                 break;
 617         default:
 618                 goto out_unknown;
 619         }
 620
 621         result = S_038008_DATA_FORMAT(result);
 622
 623         if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 624                 result |= S_038008_FORMAT_COMP_ALL(1);
 625         }
 626         if (desc->channel[i].normalized) {
 627                 result |= S_038008_NUM_FORMAT_ALL(0);
 628         } else {
 629                 result |= S_038008_NUM_FORMAT_ALL(2);
 630         }
 631         return result;
 632 out_unknown:
 633         R600_ERR("unsupported vertex format %s\n", util_format_name(format));
 634         return ~0;
 635 }
 636
 637 #endif