src/mesa/state_tracker/st_format.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   4  * Copyright (c) 2008-2010 VMware, Inc.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29
  30 /**
  31  * Mesa / Gallium format conversion and format selection code.
  32  * \author Brian Paul
  33  */
  34
  35 #include "main/imports.h"
  36 #include "main/context.h"
  37 #include "main/enums.h"
  38 #include "main/formats.h"
  39 #include "main/glformats.h"
  40 #include "main/texcompress.h"
  41 #include "main/texgetimage.h"
  42 #include "main/teximage.h"
  43 #include "main/texstore.h"
  44 #include "main/image.h"
  45 #include "main/macros.h"
  46 #include "main/formatquery.h"
  47
  48 #include "pipe/p_context.h"
  49 #include "pipe/p_defines.h"
  50 #include "pipe/p_screen.h"
  51 #include "util/u_format.h"
  52 #include "st_cb_texture.h"
  53 #include "st_context.h"
  54 #include "st_format.h"
  55
  56
  57 /**
  58  * Translate Mesa format to Gallium format.
  59  */
  60 enum pipe_format
  61 st_mesa_format_to_pipe_format(const struct st_context *st, mesa_format mesaFormat)
  62 {
  63    switch (mesaFormat) {
  64    case MESA_FORMAT_A8B8G8R8_UNORM:
  65       return PIPE_FORMAT_ABGR8888_UNORM;
  66    case MESA_FORMAT_R8G8B8A8_UNORM:
  67       return PIPE_FORMAT_RGBA8888_UNORM;
  68    case MESA_FORMAT_B8G8R8A8_UNORM:
  69       return PIPE_FORMAT_BGRA8888_UNORM;
  70    case MESA_FORMAT_A8R8G8B8_UNORM:
  71       return PIPE_FORMAT_ARGB8888_UNORM;
  72    case MESA_FORMAT_X8B8G8R8_UNORM:
  73       return PIPE_FORMAT_XBGR8888_UNORM;
  74    case MESA_FORMAT_R8G8B8X8_UNORM:
  75       return PIPE_FORMAT_RGBX8888_UNORM;
  76    case MESA_FORMAT_B8G8R8X8_UNORM:
  77       return PIPE_FORMAT_BGRX8888_UNORM;
  78    case MESA_FORMAT_X8R8G8B8_UNORM:
  79       return PIPE_FORMAT_XRGB8888_UNORM;
  80    case MESA_FORMAT_B5G5R5A1_UNORM:
  81       return PIPE_FORMAT_B5G5R5A1_UNORM;
  82    case MESA_FORMAT_A1B5G5R5_UNORM:
  83       return PIPE_FORMAT_A1B5G5R5_UNORM;
  84    case MESA_FORMAT_B4G4R4A4_UNORM:
  85       return PIPE_FORMAT_B4G4R4A4_UNORM;
  86    case MESA_FORMAT_B5G6R5_UNORM:
  87       return PIPE_FORMAT_B5G6R5_UNORM;
  88    case MESA_FORMAT_B2G3R3_UNORM:
  89       return PIPE_FORMAT_B2G3R3_UNORM;
  90    case MESA_FORMAT_B10G10R10A2_UNORM:
  91       return PIPE_FORMAT_B10G10R10A2_UNORM;
  92    case MESA_FORMAT_R10G10B10A2_UNORM:
  93       return PIPE_FORMAT_R10G10B10A2_UNORM;
  94    case MESA_FORMAT_R10G10B10X2_UNORM:
  95       return PIPE_FORMAT_R10G10B10X2_UNORM;
  96    case MESA_FORMAT_L4A4_UNORM:
  97       return PIPE_FORMAT_L4A4_UNORM;
  98    case MESA_FORMAT_L8A8_UNORM:
  99       return PIPE_FORMAT_LA88_UNORM;
 100    case MESA_FORMAT_A8L8_UNORM:
 101       return PIPE_FORMAT_AL88_UNORM;
 102    case MESA_FORMAT_L16A16_UNORM:
 103       return PIPE_FORMAT_LA1616_UNORM;
 104    case MESA_FORMAT_A16L16_UNORM:
 105       return PIPE_FORMAT_AL1616_UNORM;
 106    case MESA_FORMAT_A_UNORM8:
 107       return PIPE_FORMAT_A8_UNORM;
 108    case MESA_FORMAT_A_UNORM16:
 109       return PIPE_FORMAT_A16_UNORM;
 110    case MESA_FORMAT_L_UNORM8:
 111       return PIPE_FORMAT_L8_UNORM;
 112    case MESA_FORMAT_L_UNORM16:
 113       return PIPE_FORMAT_L16_UNORM;
 114    case MESA_FORMAT_I_UNORM8:
 115       return PIPE_FORMAT_I8_UNORM;
 116    case MESA_FORMAT_I_UNORM16:
 117       return PIPE_FORMAT_I16_UNORM;
 118    case MESA_FORMAT_Z_UNORM16:
 119       return PIPE_FORMAT_Z16_UNORM;
 120    case MESA_FORMAT_Z_UNORM32:
 121       return PIPE_FORMAT_Z32_UNORM;
 122    case MESA_FORMAT_S8_UINT_Z24_UNORM:
 123       return PIPE_FORMAT_S8_UINT_Z24_UNORM;
 124    case MESA_FORMAT_Z24_UNORM_S8_UINT:
 125       return PIPE_FORMAT_Z24_UNORM_S8_UINT;
 126    case MESA_FORMAT_X8_UINT_Z24_UNORM:
 127       return PIPE_FORMAT_X8Z24_UNORM;
 128    case MESA_FORMAT_Z24_UNORM_X8_UINT:
 129       return PIPE_FORMAT_Z24X8_UNORM;
 130    case MESA_FORMAT_S_UINT8:
 131       return PIPE_FORMAT_S8_UINT;
 132    case MESA_FORMAT_Z_FLOAT32:
 133       return PIPE_FORMAT_Z32_FLOAT;
 134    case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
 135       return PIPE_FORMAT_Z32_FLOAT_S8X24_UINT;
 136    case MESA_FORMAT_YCBCR:
 137       return PIPE_FORMAT_UYVY;
 138    case MESA_FORMAT_YCBCR_REV:
 139       return PIPE_FORMAT_YUYV;
 140    case MESA_FORMAT_RGB_DXT1:
 141       return PIPE_FORMAT_DXT1_RGB;
 142    case MESA_FORMAT_RGBA_DXT1:
 143       return PIPE_FORMAT_DXT1_RGBA;
 144    case MESA_FORMAT_RGBA_DXT3:
 145       return PIPE_FORMAT_DXT3_RGBA;
 146    case MESA_FORMAT_RGBA_DXT5:
 147       return PIPE_FORMAT_DXT5_RGBA;
 148    case MESA_FORMAT_SRGB_DXT1:
 149       return PIPE_FORMAT_DXT1_SRGB;
 150    case MESA_FORMAT_SRGBA_DXT1:
 151       return PIPE_FORMAT_DXT1_SRGBA;
 152    case MESA_FORMAT_SRGBA_DXT3:
 153       return PIPE_FORMAT_DXT3_SRGBA;
 154    case MESA_FORMAT_SRGBA_DXT5:
 155       return PIPE_FORMAT_DXT5_SRGBA;
 156    case MESA_FORMAT_L8A8_SRGB:
 157       return PIPE_FORMAT_LA88_SRGB;
 158    case MESA_FORMAT_A8L8_SRGB:
 159       return PIPE_FORMAT_AL88_SRGB;
 160    case MESA_FORMAT_L_SRGB8:
 161       return PIPE_FORMAT_L8_SRGB;
 162    case MESA_FORMAT_BGR_SRGB8:
 163       return PIPE_FORMAT_R8G8B8_SRGB;
 164    case MESA_FORMAT_A8B8G8R8_SRGB:
 165       return PIPE_FORMAT_ABGR8888_SRGB;
 166    case MESA_FORMAT_R8G8B8A8_SRGB:
 167       return PIPE_FORMAT_RGBA8888_SRGB;
 168    case MESA_FORMAT_B8G8R8A8_SRGB:
 169       return PIPE_FORMAT_BGRA8888_SRGB;
 170    case MESA_FORMAT_A8R8G8B8_SRGB:
 171       return PIPE_FORMAT_ARGB8888_SRGB;
 172    case MESA_FORMAT_RGBA_FLOAT32:
 173       return PIPE_FORMAT_R32G32B32A32_FLOAT;
 174    case MESA_FORMAT_RGBA_FLOAT16:
 175       return PIPE_FORMAT_R16G16B16A16_FLOAT;
 176    case MESA_FORMAT_RGB_FLOAT32:
 177       return PIPE_FORMAT_R32G32B32_FLOAT;
 178    case MESA_FORMAT_RGB_FLOAT16:
 179       return PIPE_FORMAT_R16G16B16_FLOAT;
 180    case MESA_FORMAT_LA_FLOAT32:
 181       return PIPE_FORMAT_L32A32_FLOAT;
 182    case MESA_FORMAT_LA_FLOAT16:
 183       return PIPE_FORMAT_L16A16_FLOAT;
 184    case MESA_FORMAT_L_FLOAT32:
 185       return PIPE_FORMAT_L32_FLOAT;
 186    case MESA_FORMAT_L_FLOAT16:
 187       return PIPE_FORMAT_L16_FLOAT;
 188    case MESA_FORMAT_A_FLOAT32:
 189       return PIPE_FORMAT_A32_FLOAT;
 190    case MESA_FORMAT_A_FLOAT16:
 191       return PIPE_FORMAT_A16_FLOAT;
 192    case MESA_FORMAT_I_FLOAT32:
 193       return PIPE_FORMAT_I32_FLOAT;
 194    case MESA_FORMAT_I_FLOAT16:
 195       return PIPE_FORMAT_I16_FLOAT;
 196    case MESA_FORMAT_R_FLOAT32:
 197       return PIPE_FORMAT_R32_FLOAT;
 198    case MESA_FORMAT_R_FLOAT16:
 199       return PIPE_FORMAT_R16_FLOAT;
 200    case MESA_FORMAT_RG_FLOAT32:
 201       return PIPE_FORMAT_R32G32_FLOAT;
 202    case MESA_FORMAT_RG_FLOAT16:
 203       return PIPE_FORMAT_R16G16_FLOAT;
 204
 205    case MESA_FORMAT_R_UNORM8:
 206       return PIPE_FORMAT_R8_UNORM;
 207    case MESA_FORMAT_R_UNORM16:
 208       return PIPE_FORMAT_R16_UNORM;
 209    case MESA_FORMAT_R8G8_UNORM:
 210       return PIPE_FORMAT_RG88_UNORM;
 211    case MESA_FORMAT_G8R8_UNORM:
 212       return PIPE_FORMAT_GR88_UNORM;
 213    case MESA_FORMAT_R16G16_UNORM:
 214       return PIPE_FORMAT_RG1616_UNORM;
 215    case MESA_FORMAT_G16R16_UNORM:
 216       return PIPE_FORMAT_GR1616_UNORM;
 217    case MESA_FORMAT_RGBA_UNORM16:
 218       return PIPE_FORMAT_R16G16B16A16_UNORM;
 219
 220    /* signed int formats */
 221    case MESA_FORMAT_A_UINT8:
 222       return PIPE_FORMAT_A8_UINT;
 223    case MESA_FORMAT_A_UINT16:
 224       return PIPE_FORMAT_A16_UINT;
 225    case MESA_FORMAT_A_UINT32:
 226       return PIPE_FORMAT_A32_UINT;
 227
 228    case MESA_FORMAT_A_SINT8:
 229       return PIPE_FORMAT_A8_SINT;
 230    case MESA_FORMAT_A_SINT16:
 231       return PIPE_FORMAT_A16_SINT;
 232    case MESA_FORMAT_A_SINT32:
 233       return PIPE_FORMAT_A32_SINT;
 234
 235    case MESA_FORMAT_I_UINT8:
 236       return PIPE_FORMAT_I8_UINT;
 237    case MESA_FORMAT_I_UINT16:
 238       return PIPE_FORMAT_I16_UINT;
 239    case MESA_FORMAT_I_UINT32:
 240       return PIPE_FORMAT_I32_UINT;
 241
 242    case MESA_FORMAT_I_SINT8:
 243       return PIPE_FORMAT_I8_SINT;
 244    case MESA_FORMAT_I_SINT16:
 245       return PIPE_FORMAT_I16_SINT;
 246    case MESA_FORMAT_I_SINT32:
 247       return PIPE_FORMAT_I32_SINT;
 248
 249    case MESA_FORMAT_L_UINT8:
 250       return PIPE_FORMAT_L8_UINT;
 251    case MESA_FORMAT_L_UINT16:
 252       return PIPE_FORMAT_L16_UINT;
 253    case MESA_FORMAT_L_UINT32:
 254       return PIPE_FORMAT_L32_UINT;
 255
 256    case MESA_FORMAT_L_SINT8:
 257       return PIPE_FORMAT_L8_SINT;
 258    case MESA_FORMAT_L_SINT16:
 259       return PIPE_FORMAT_L16_SINT;
 260    case MESA_FORMAT_L_SINT32:
 261       return PIPE_FORMAT_L32_SINT;
 262
 263    case MESA_FORMAT_LA_UINT8:
 264       return PIPE_FORMAT_L8A8_UINT;
 265    case MESA_FORMAT_LA_UINT16:
 266       return PIPE_FORMAT_L16A16_UINT;
 267    case MESA_FORMAT_LA_UINT32:
 268       return PIPE_FORMAT_L32A32_UINT;
 269
 270    case MESA_FORMAT_LA_SINT8:
 271       return PIPE_FORMAT_L8A8_SINT;
 272    case MESA_FORMAT_LA_SINT16:
 273       return PIPE_FORMAT_L16A16_SINT;
 274    case MESA_FORMAT_LA_SINT32:
 275       return PIPE_FORMAT_L32A32_SINT;
 276
 277    case MESA_FORMAT_R_SINT8:
 278       return PIPE_FORMAT_R8_SINT;
 279    case MESA_FORMAT_RG_SINT8:
 280       return PIPE_FORMAT_R8G8_SINT;
 281    case MESA_FORMAT_RGB_SINT8:
 282       return PIPE_FORMAT_R8G8B8_SINT;
 283    case MESA_FORMAT_RGBA_SINT8:
 284       return PIPE_FORMAT_R8G8B8A8_SINT;
 285    case MESA_FORMAT_R_SINT16:
 286       return PIPE_FORMAT_R16_SINT;
 287    case MESA_FORMAT_RG_SINT16:
 288       return PIPE_FORMAT_R16G16_SINT;
 289    case MESA_FORMAT_RGB_SINT16:
 290       return PIPE_FORMAT_R16G16B16_SINT;
 291    case MESA_FORMAT_RGBA_SINT16:
 292       return PIPE_FORMAT_R16G16B16A16_SINT;
 293    case MESA_FORMAT_R_SINT32:
 294       return PIPE_FORMAT_R32_SINT;
 295    case MESA_FORMAT_RG_SINT32:
 296       return PIPE_FORMAT_R32G32_SINT;
 297    case MESA_FORMAT_RGB_SINT32:
 298       return PIPE_FORMAT_R32G32B32_SINT;
 299    case MESA_FORMAT_RGBA_SINT32:
 300       return PIPE_FORMAT_R32G32B32A32_SINT;
 301
 302    /* unsigned int formats */
 303    case MESA_FORMAT_R_UINT8:
 304       return PIPE_FORMAT_R8_UINT;
 305    case MESA_FORMAT_RG_UINT8:
 306       return PIPE_FORMAT_R8G8_UINT;
 307    case MESA_FORMAT_RGB_UINT8:
 308       return PIPE_FORMAT_R8G8B8_UINT;
 309    case MESA_FORMAT_RGBA_UINT8:
 310       return PIPE_FORMAT_R8G8B8A8_UINT;
 311    case MESA_FORMAT_R_UINT16:
 312       return PIPE_FORMAT_R16_UINT;
 313    case MESA_FORMAT_RG_UINT16:
 314       return PIPE_FORMAT_R16G16_UINT;
 315    case MESA_FORMAT_RGB_UINT16:
 316       return PIPE_FORMAT_R16G16B16_UINT;
 317    case MESA_FORMAT_RGBA_UINT16:
 318       return PIPE_FORMAT_R16G16B16A16_UINT;
 319    case MESA_FORMAT_R_UINT32:
 320       return PIPE_FORMAT_R32_UINT;
 321    case MESA_FORMAT_RG_UINT32:
 322       return PIPE_FORMAT_R32G32_UINT;
 323    case MESA_FORMAT_RGB_UINT32:
 324       return PIPE_FORMAT_R32G32B32_UINT;
 325    case MESA_FORMAT_RGBA_UINT32:
 326       return PIPE_FORMAT_R32G32B32A32_UINT;
 327
 328    case MESA_FORMAT_R_RGTC1_UNORM:
 329       return PIPE_FORMAT_RGTC1_UNORM;
 330    case MESA_FORMAT_R_RGTC1_SNORM:
 331       return PIPE_FORMAT_RGTC1_SNORM;
 332    case MESA_FORMAT_RG_RGTC2_UNORM:
 333       return PIPE_FORMAT_RGTC2_UNORM;
 334    case MESA_FORMAT_RG_RGTC2_SNORM:
 335       return PIPE_FORMAT_RGTC2_SNORM;
 336
 337    case MESA_FORMAT_L_LATC1_UNORM:
 338       return PIPE_FORMAT_LATC1_UNORM;
 339    case MESA_FORMAT_L_LATC1_SNORM:
 340       return PIPE_FORMAT_LATC1_SNORM;
 341    case MESA_FORMAT_LA_LATC2_UNORM:
 342       return PIPE_FORMAT_LATC2_UNORM;
 343    case MESA_FORMAT_LA_LATC2_SNORM:
 344       return PIPE_FORMAT_LATC2_SNORM;
 345
 346    /* The destination RGBA format mustn't be changed, because it's also
 347     * a destination format of the unpack/decompression function. */
 348    case MESA_FORMAT_ETC1_RGB8:
 349       return st->has_etc1 ? PIPE_FORMAT_ETC1_RGB8 : PIPE_FORMAT_R8G8B8A8_UNORM;
 350
 351    case MESA_FORMAT_BPTC_RGBA_UNORM:
 352       return PIPE_FORMAT_BPTC_RGBA_UNORM;
 353    case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
 354       return PIPE_FORMAT_BPTC_SRGBA;
 355    case MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT:
 356       return PIPE_FORMAT_BPTC_RGB_FLOAT;
 357    case MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT:
 358       return PIPE_FORMAT_BPTC_RGB_UFLOAT;
 359
 360    /* signed normalized formats */
 361    case MESA_FORMAT_R_SNORM8:
 362       return PIPE_FORMAT_R8_SNORM;
 363    case MESA_FORMAT_R8G8_SNORM:
 364       return PIPE_FORMAT_RG88_SNORM;
 365    case MESA_FORMAT_G8R8_SNORM:
 366       return PIPE_FORMAT_GR88_SNORM;
 367    case MESA_FORMAT_R8G8B8A8_SNORM:
 368       return PIPE_FORMAT_RGBA8888_SNORM;
 369    case MESA_FORMAT_A8B8G8R8_SNORM:
 370       return PIPE_FORMAT_ABGR8888_SNORM;
 371
 372    case MESA_FORMAT_A_SNORM8:
 373       return PIPE_FORMAT_A8_SNORM;
 374    case MESA_FORMAT_L_SNORM8:
 375       return PIPE_FORMAT_L8_SNORM;
 376    case MESA_FORMAT_L8A8_SNORM:
 377       return PIPE_FORMAT_LA88_SNORM;
 378    case MESA_FORMAT_A8L8_SNORM:
 379       return PIPE_FORMAT_AL88_SNORM;
 380    case MESA_FORMAT_I_SNORM8:
 381       return PIPE_FORMAT_I8_SNORM;
 382
 383    case MESA_FORMAT_R_SNORM16:
 384       return PIPE_FORMAT_R16_SNORM;
 385    case MESA_FORMAT_R16G16_SNORM:
 386       return PIPE_FORMAT_RG1616_SNORM;
 387    case MESA_FORMAT_G16R16_SNORM:
 388       return PIPE_FORMAT_GR1616_SNORM;
 389    case MESA_FORMAT_RGBA_SNORM16:
 390       return PIPE_FORMAT_R16G16B16A16_SNORM;
 391
 392    case MESA_FORMAT_A_SNORM16:
 393       return PIPE_FORMAT_A16_SNORM;
 394    case MESA_FORMAT_L_SNORM16:
 395       return PIPE_FORMAT_L16_SNORM;
 396    case MESA_FORMAT_LA_SNORM16:
 397       return PIPE_FORMAT_L16A16_SNORM;
 398    case MESA_FORMAT_I_SNORM16:
 399       return PIPE_FORMAT_I16_SNORM;
 400
 401    case MESA_FORMAT_R9G9B9E5_FLOAT:
 402       return PIPE_FORMAT_R9G9B9E5_FLOAT;
 403    case MESA_FORMAT_R11G11B10_FLOAT:
 404       return PIPE_FORMAT_R11G11B10_FLOAT;
 405    case MESA_FORMAT_B10G10R10A2_UINT:
 406       return PIPE_FORMAT_B10G10R10A2_UINT;
 407    case MESA_FORMAT_R10G10B10A2_UINT:
 408       return PIPE_FORMAT_R10G10B10A2_UINT;
 409
 410    case MESA_FORMAT_B4G4R4X4_UNORM:
 411       return PIPE_FORMAT_B4G4R4X4_UNORM;
 412    case MESA_FORMAT_B5G5R5X1_UNORM:
 413       return PIPE_FORMAT_B5G5R5X1_UNORM;
 414    case MESA_FORMAT_X1B5G5R5_UNORM:
 415       return PIPE_FORMAT_X1B5G5R5_UNORM;
 416    case MESA_FORMAT_R8G8B8X8_SNORM:
 417       return PIPE_FORMAT_RGBX8888_SNORM;
 418    case MESA_FORMAT_X8B8G8R8_SNORM:
 419       return PIPE_FORMAT_XBGR8888_SNORM;
 420    case MESA_FORMAT_R8G8B8X8_SRGB:
 421       return PIPE_FORMAT_RGBX8888_SRGB;
 422    case MESA_FORMAT_X8B8G8R8_SRGB:
 423       return PIPE_FORMAT_XBGR8888_SRGB;
 424    case MESA_FORMAT_RGBX_UINT8:
 425       return PIPE_FORMAT_R8G8B8X8_UINT;
 426    case MESA_FORMAT_RGBX_SINT8:
 427       return PIPE_FORMAT_R8G8B8X8_SINT;
 428    case MESA_FORMAT_B10G10R10X2_UNORM:
 429       return PIPE_FORMAT_B10G10R10X2_UNORM;
 430    case MESA_FORMAT_RGBX_UNORM16:
 431       return PIPE_FORMAT_R16G16B16X16_UNORM;
 432    case MESA_FORMAT_RGBX_SNORM16:
 433       return PIPE_FORMAT_R16G16B16X16_SNORM;
 434    case MESA_FORMAT_RGBX_FLOAT16:
 435       return PIPE_FORMAT_R16G16B16X16_FLOAT;
 436    case MESA_FORMAT_RGBX_UINT16:
 437       return PIPE_FORMAT_R16G16B16X16_UINT;
 438    case MESA_FORMAT_RGBX_SINT16:
 439       return PIPE_FORMAT_R16G16B16X16_SINT;
 440    case MESA_FORMAT_RGBX_FLOAT32:
 441       return PIPE_FORMAT_R32G32B32X32_FLOAT;
 442    case MESA_FORMAT_RGBX_UINT32:
 443       return PIPE_FORMAT_R32G32B32X32_UINT;
 444    case MESA_FORMAT_RGBX_SINT32:
 445       return PIPE_FORMAT_R32G32B32X32_SINT;
 446
 447    case MESA_FORMAT_B8G8R8X8_SRGB:
 448       return PIPE_FORMAT_BGRX8888_SRGB;
 449    case MESA_FORMAT_X8R8G8B8_SRGB:
 450       return PIPE_FORMAT_XRGB8888_SRGB;
 451
 452    /* ETC2 formats are emulated as uncompressed ones.
 453     * The destination formats mustn't be changed, because they are also
 454     * destination formats of the unpack/decompression function. */
 455    case MESA_FORMAT_ETC2_RGB8:
 456       return st->has_etc2 ? PIPE_FORMAT_ETC2_RGB8 : PIPE_FORMAT_R8G8B8A8_UNORM;
 457    case MESA_FORMAT_ETC2_SRGB8:
 458       return st->has_etc2 ? PIPE_FORMAT_ETC2_SRGB8 : PIPE_FORMAT_B8G8R8A8_SRGB;
 459    case MESA_FORMAT_ETC2_RGBA8_EAC:
 460       return st->has_etc2 ? PIPE_FORMAT_ETC2_RGBA8 : PIPE_FORMAT_R8G8B8A8_UNORM;
 461    case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
 462       return st->has_etc2 ? PIPE_FORMAT_ETC2_SRGBA8 : PIPE_FORMAT_B8G8R8A8_SRGB;
 463    case MESA_FORMAT_ETC2_R11_EAC:
 464       return st->has_etc2 ? PIPE_FORMAT_ETC2_R11_UNORM : PIPE_FORMAT_R16_UNORM;
 465    case MESA_FORMAT_ETC2_RG11_EAC:
 466       return st->has_etc2 ? PIPE_FORMAT_ETC2_RG11_UNORM : PIPE_FORMAT_R16G16_UNORM;
 467    case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
 468       return st->has_etc2 ? PIPE_FORMAT_ETC2_R11_SNORM : PIPE_FORMAT_R16_SNORM;
 469    case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
 470       return st->has_etc2 ? PIPE_FORMAT_ETC2_RG11_SNORM : PIPE_FORMAT_R16G16_SNORM;
 471    case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
 472       return st->has_etc2 ? PIPE_FORMAT_ETC2_RGB8A1 : PIPE_FORMAT_R8G8B8A8_UNORM;
 473    case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
 474       return st->has_etc2 ? PIPE_FORMAT_ETC2_SRGB8A1 : PIPE_FORMAT_B8G8R8A8_SRGB;
 475
 476    case MESA_FORMAT_RGBA_ASTC_4x4:
 477       return PIPE_FORMAT_ASTC_4x4;
 478    case MESA_FORMAT_RGBA_ASTC_5x4:
 479       return PIPE_FORMAT_ASTC_5x4;
 480    case MESA_FORMAT_RGBA_ASTC_5x5:
 481       return PIPE_FORMAT_ASTC_5x5;
 482    case MESA_FORMAT_RGBA_ASTC_6x5:
 483       return PIPE_FORMAT_ASTC_6x5;
 484    case MESA_FORMAT_RGBA_ASTC_6x6:
 485       return PIPE_FORMAT_ASTC_6x6;
 486    case MESA_FORMAT_RGBA_ASTC_8x5:
 487       return PIPE_FORMAT_ASTC_8x5;
 488    case MESA_FORMAT_RGBA_ASTC_8x6:
 489       return PIPE_FORMAT_ASTC_8x6;
 490    case MESA_FORMAT_RGBA_ASTC_8x8:
 491       return PIPE_FORMAT_ASTC_8x8;
 492    case MESA_FORMAT_RGBA_ASTC_10x5:
 493       return PIPE_FORMAT_ASTC_10x5;
 494    case MESA_FORMAT_RGBA_ASTC_10x6:
 495       return PIPE_FORMAT_ASTC_10x6;
 496    case MESA_FORMAT_RGBA_ASTC_10x8:
 497       return PIPE_FORMAT_ASTC_10x8;
 498    case MESA_FORMAT_RGBA_ASTC_10x10:
 499       return PIPE_FORMAT_ASTC_10x10;
 500    case MESA_FORMAT_RGBA_ASTC_12x10:
 501       return PIPE_FORMAT_ASTC_12x10;
 502    case MESA_FORMAT_RGBA_ASTC_12x12:
 503       return PIPE_FORMAT_ASTC_12x12;
 504
 505    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4:
 506       return PIPE_FORMAT_ASTC_4x4_SRGB;
 507    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4:
 508       return PIPE_FORMAT_ASTC_5x4_SRGB;
 509    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5:
 510       return PIPE_FORMAT_ASTC_5x5_SRGB;
 511    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5:
 512       return PIPE_FORMAT_ASTC_6x5_SRGB;
 513    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6:
 514       return PIPE_FORMAT_ASTC_6x6_SRGB;
 515    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x5:
 516       return PIPE_FORMAT_ASTC_8x5_SRGB;
 517    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x6:
 518       return PIPE_FORMAT_ASTC_8x6_SRGB;
 519    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x8:
 520       return PIPE_FORMAT_ASTC_8x8_SRGB;
 521    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x5:
 522       return PIPE_FORMAT_ASTC_10x5_SRGB;
 523    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x6:
 524       return PIPE_FORMAT_ASTC_10x6_SRGB;
 525    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x8:
 526       return PIPE_FORMAT_ASTC_10x8_SRGB;
 527    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x10:
 528       return PIPE_FORMAT_ASTC_10x10_SRGB;
 529    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x10:
 530       return PIPE_FORMAT_ASTC_12x10_SRGB;
 531    case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x12:
 532       return PIPE_FORMAT_ASTC_12x12_SRGB;
 533
 534    default:
 535       return PIPE_FORMAT_NONE;
 536    }
 537 }
 538
 539
 540 /**
 541  * Translate Gallium format to Mesa format.
 542  */
 543 mesa_format
 544 st_pipe_format_to_mesa_format(enum pipe_format format)
 545 {
 546    switch (format) {
 547    case PIPE_FORMAT_ABGR8888_UNORM:
 548       return MESA_FORMAT_A8B8G8R8_UNORM;
 549    case PIPE_FORMAT_RGBA8888_UNORM:
 550       return MESA_FORMAT_R8G8B8A8_UNORM;
 551    case PIPE_FORMAT_BGRA8888_UNORM:
 552       return MESA_FORMAT_B8G8R8A8_UNORM;
 553    case PIPE_FORMAT_ARGB8888_UNORM:
 554       return MESA_FORMAT_A8R8G8B8_UNORM;
 555    case PIPE_FORMAT_XBGR8888_UNORM:
 556       return MESA_FORMAT_X8B8G8R8_UNORM;
 557    case PIPE_FORMAT_RGBX8888_UNORM:
 558       return MESA_FORMAT_R8G8B8X8_UNORM;
 559    case PIPE_FORMAT_BGRX8888_UNORM:
 560       return MESA_FORMAT_B8G8R8X8_UNORM;
 561    case PIPE_FORMAT_XRGB8888_UNORM:
 562       return MESA_FORMAT_X8R8G8B8_UNORM;
 563    case PIPE_FORMAT_B5G5R5A1_UNORM:
 564       return MESA_FORMAT_B5G5R5A1_UNORM;
 565    case PIPE_FORMAT_A1B5G5R5_UNORM:
 566       return MESA_FORMAT_A1B5G5R5_UNORM;
 567    case PIPE_FORMAT_B4G4R4A4_UNORM:
 568       return MESA_FORMAT_B4G4R4A4_UNORM;
 569    case PIPE_FORMAT_B5G6R5_UNORM:
 570       return MESA_FORMAT_B5G6R5_UNORM;
 571    case PIPE_FORMAT_B2G3R3_UNORM:
 572       return MESA_FORMAT_B2G3R3_UNORM;
 573    case PIPE_FORMAT_B10G10R10A2_UNORM:
 574       return MESA_FORMAT_B10G10R10A2_UNORM;
 575    case PIPE_FORMAT_R10G10B10A2_UNORM:
 576       return MESA_FORMAT_R10G10B10A2_UNORM;
 577    case PIPE_FORMAT_R10G10B10X2_UNORM:
 578       return MESA_FORMAT_R10G10B10X2_UNORM;
 579    case PIPE_FORMAT_L4A4_UNORM:
 580       return MESA_FORMAT_L4A4_UNORM;
 581    case PIPE_FORMAT_LA88_UNORM:
 582       return MESA_FORMAT_L8A8_UNORM;
 583    case PIPE_FORMAT_AL88_UNORM:
 584       return MESA_FORMAT_A8L8_UNORM;
 585    case PIPE_FORMAT_LA1616_UNORM:
 586       return MESA_FORMAT_L16A16_UNORM;
 587    case PIPE_FORMAT_AL1616_UNORM:
 588       return MESA_FORMAT_A16L16_UNORM;
 589    case PIPE_FORMAT_A8_UNORM:
 590       return MESA_FORMAT_A_UNORM8;
 591    case PIPE_FORMAT_A16_UNORM:
 592       return MESA_FORMAT_A_UNORM16;
 593    case PIPE_FORMAT_L8_UNORM:
 594       return MESA_FORMAT_L_UNORM8;
 595    case PIPE_FORMAT_L16_UNORM:
 596       return MESA_FORMAT_L_UNORM16;
 597    case PIPE_FORMAT_I8_UNORM:
 598       return MESA_FORMAT_I_UNORM8;
 599    case PIPE_FORMAT_I16_UNORM:
 600       return MESA_FORMAT_I_UNORM16;
 601    case PIPE_FORMAT_S8_UINT:
 602       return MESA_FORMAT_S_UINT8;
 603
 604    case PIPE_FORMAT_R16G16B16A16_UNORM:
 605       return MESA_FORMAT_RGBA_UNORM16;
 606
 607    case PIPE_FORMAT_Z16_UNORM:
 608       return MESA_FORMAT_Z_UNORM16;
 609    case PIPE_FORMAT_Z32_UNORM:
 610       return MESA_FORMAT_Z_UNORM32;
 611    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 612       return MESA_FORMAT_S8_UINT_Z24_UNORM;
 613    case PIPE_FORMAT_X8Z24_UNORM:
 614       return MESA_FORMAT_X8_UINT_Z24_UNORM;
 615    case PIPE_FORMAT_Z24X8_UNORM:
 616       return MESA_FORMAT_Z24_UNORM_X8_UINT;
 617    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 618       return MESA_FORMAT_Z24_UNORM_S8_UINT;
 619    case PIPE_FORMAT_Z32_FLOAT:
 620       return MESA_FORMAT_Z_FLOAT32;
 621    case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
 622       return MESA_FORMAT_Z32_FLOAT_S8X24_UINT;
 623
 624    case PIPE_FORMAT_UYVY:
 625       return MESA_FORMAT_YCBCR;
 626    case PIPE_FORMAT_YUYV:
 627       return MESA_FORMAT_YCBCR_REV;
 628
 629    case PIPE_FORMAT_DXT1_RGB:
 630       return MESA_FORMAT_RGB_DXT1;
 631    case PIPE_FORMAT_DXT1_RGBA:
 632       return MESA_FORMAT_RGBA_DXT1;
 633    case PIPE_FORMAT_DXT3_RGBA:
 634       return MESA_FORMAT_RGBA_DXT3;
 635    case PIPE_FORMAT_DXT5_RGBA:
 636       return MESA_FORMAT_RGBA_DXT5;
 637    case PIPE_FORMAT_DXT1_SRGB:
 638       return MESA_FORMAT_SRGB_DXT1;
 639    case PIPE_FORMAT_DXT1_SRGBA:
 640       return MESA_FORMAT_SRGBA_DXT1;
 641    case PIPE_FORMAT_DXT3_SRGBA:
 642       return MESA_FORMAT_SRGBA_DXT3;
 643    case PIPE_FORMAT_DXT5_SRGBA:
 644       return MESA_FORMAT_SRGBA_DXT5;
 645    case PIPE_FORMAT_LA88_SRGB:
 646       return MESA_FORMAT_L8A8_SRGB;
 647    case PIPE_FORMAT_AL88_SRGB:
 648       return MESA_FORMAT_A8L8_SRGB;
 649    case PIPE_FORMAT_L8_SRGB:
 650       return MESA_FORMAT_L_SRGB8;
 651    case PIPE_FORMAT_R8G8B8_SRGB:
 652       return MESA_FORMAT_BGR_SRGB8;
 653    case PIPE_FORMAT_ABGR8888_SRGB:
 654       return MESA_FORMAT_A8B8G8R8_SRGB;
 655    case PIPE_FORMAT_RGBA8888_SRGB:
 656       return MESA_FORMAT_R8G8B8A8_SRGB;
 657    case PIPE_FORMAT_BGRA8888_SRGB:
 658       return MESA_FORMAT_B8G8R8A8_SRGB;
 659    case PIPE_FORMAT_ARGB8888_SRGB:
 660       return MESA_FORMAT_A8R8G8B8_SRGB;
 661    case PIPE_FORMAT_R32G32B32A32_FLOAT:
 662       return MESA_FORMAT_RGBA_FLOAT32;
 663    case PIPE_FORMAT_R16G16B16A16_FLOAT:
 664       return MESA_FORMAT_RGBA_FLOAT16;
 665    case PIPE_FORMAT_R32G32B32_FLOAT:
 666       return MESA_FORMAT_RGB_FLOAT32;
 667    case PIPE_FORMAT_R16G16B16_FLOAT:
 668       return MESA_FORMAT_RGB_FLOAT16;
 669    case PIPE_FORMAT_L32A32_FLOAT:
 670       return MESA_FORMAT_LA_FLOAT32;
 671    case PIPE_FORMAT_L16A16_FLOAT:
 672       return MESA_FORMAT_LA_FLOAT16;
 673    case PIPE_FORMAT_L32_FLOAT:
 674       return MESA_FORMAT_L_FLOAT32;
 675    case PIPE_FORMAT_L16_FLOAT:
 676       return MESA_FORMAT_L_FLOAT16;
 677    case PIPE_FORMAT_A32_FLOAT:
 678       return MESA_FORMAT_A_FLOAT32;
 679    case PIPE_FORMAT_A16_FLOAT:
 680       return MESA_FORMAT_A_FLOAT16;
 681    case PIPE_FORMAT_I32_FLOAT:
 682       return MESA_FORMAT_I_FLOAT32;
 683    case PIPE_FORMAT_I16_FLOAT:
 684       return MESA_FORMAT_I_FLOAT16;
 685    case PIPE_FORMAT_R32_FLOAT:
 686       return MESA_FORMAT_R_FLOAT32;
 687    case PIPE_FORMAT_R16_FLOAT:
 688       return MESA_FORMAT_R_FLOAT16;
 689    case PIPE_FORMAT_R32G32_FLOAT:
 690       return MESA_FORMAT_RG_FLOAT32;
 691    case PIPE_FORMAT_R16G16_FLOAT:
 692       return MESA_FORMAT_RG_FLOAT16;
 693
 694    case PIPE_FORMAT_R8_UNORM:
 695       return MESA_FORMAT_R_UNORM8;
 696    case PIPE_FORMAT_R16_UNORM:
 697       return MESA_FORMAT_R_UNORM16;
 698    case PIPE_FORMAT_RG88_UNORM:
 699       return MESA_FORMAT_R8G8_UNORM;
 700    case PIPE_FORMAT_GR88_UNORM:
 701       return MESA_FORMAT_G8R8_UNORM;
 702    case PIPE_FORMAT_RG1616_UNORM:
 703       return MESA_FORMAT_R16G16_UNORM;
 704    case PIPE_FORMAT_GR1616_UNORM:
 705       return MESA_FORMAT_G16R16_UNORM;
 706
 707    case PIPE_FORMAT_A8_UINT:
 708       return MESA_FORMAT_A_UINT8;
 709    case PIPE_FORMAT_A16_UINT:
 710       return MESA_FORMAT_A_UINT16;
 711    case PIPE_FORMAT_A32_UINT:
 712       return MESA_FORMAT_A_UINT32;
 713    case PIPE_FORMAT_A8_SINT:
 714       return MESA_FORMAT_A_SINT8;
 715    case PIPE_FORMAT_A16_SINT:
 716       return MESA_FORMAT_A_SINT16;
 717    case PIPE_FORMAT_A32_SINT:
 718       return MESA_FORMAT_A_SINT32;
 719
 720    case PIPE_FORMAT_I8_UINT:
 721       return MESA_FORMAT_I_UINT8;
 722    case PIPE_FORMAT_I16_UINT:
 723       return MESA_FORMAT_I_UINT16;
 724    case PIPE_FORMAT_I32_UINT:
 725       return MESA_FORMAT_I_UINT32;
 726    case PIPE_FORMAT_I8_SINT:
 727       return MESA_FORMAT_I_SINT8;
 728    case PIPE_FORMAT_I16_SINT:
 729       return MESA_FORMAT_I_SINT16;
 730    case PIPE_FORMAT_I32_SINT:
 731       return MESA_FORMAT_I_SINT32;
 732
 733   case PIPE_FORMAT_L8_UINT:
 734       return MESA_FORMAT_L_UINT8;
 735    case PIPE_FORMAT_L16_UINT:
 736       return MESA_FORMAT_L_UINT16;
 737    case PIPE_FORMAT_L32_UINT:
 738       return MESA_FORMAT_L_UINT32;
 739    case PIPE_FORMAT_L8_SINT:
 740       return MESA_FORMAT_L_SINT8;
 741    case PIPE_FORMAT_L16_SINT:
 742       return MESA_FORMAT_L_SINT16;
 743    case PIPE_FORMAT_L32_SINT:
 744       return MESA_FORMAT_L_SINT32;
 745
 746    case PIPE_FORMAT_L8A8_UINT:
 747       return MESA_FORMAT_LA_UINT8;
 748    case PIPE_FORMAT_L16A16_UINT:
 749       return MESA_FORMAT_LA_UINT16;
 750    case PIPE_FORMAT_L32A32_UINT:
 751       return MESA_FORMAT_LA_UINT32;
 752    case PIPE_FORMAT_L8A8_SINT:
 753       return MESA_FORMAT_LA_SINT8;
 754    case PIPE_FORMAT_L16A16_SINT:
 755       return MESA_FORMAT_LA_SINT16;
 756    case PIPE_FORMAT_L32A32_SINT:
 757       return MESA_FORMAT_LA_SINT32;
 758
 759    case PIPE_FORMAT_R8_SINT:
 760       return MESA_FORMAT_R_SINT8;
 761    case PIPE_FORMAT_R8G8_SINT:
 762       return MESA_FORMAT_RG_SINT8;
 763    case PIPE_FORMAT_R8G8B8_SINT:
 764       return MESA_FORMAT_RGB_SINT8;
 765    case PIPE_FORMAT_R8G8B8A8_SINT:
 766       return MESA_FORMAT_RGBA_SINT8;
 767
 768    case PIPE_FORMAT_R16_SINT:
 769       return MESA_FORMAT_R_SINT16;
 770    case PIPE_FORMAT_R16G16_SINT:
 771       return MESA_FORMAT_RG_SINT16;
 772    case PIPE_FORMAT_R16G16B16_SINT:
 773       return MESA_FORMAT_RGB_SINT16;
 774    case PIPE_FORMAT_R16G16B16A16_SINT:
 775       return MESA_FORMAT_RGBA_SINT16;
 776
 777    case PIPE_FORMAT_R32_SINT:
 778       return MESA_FORMAT_R_SINT32;
 779    case PIPE_FORMAT_R32G32_SINT:
 780       return MESA_FORMAT_RG_SINT32;
 781    case PIPE_FORMAT_R32G32B32_SINT:
 782       return MESA_FORMAT_RGB_SINT32;
 783    case PIPE_FORMAT_R32G32B32A32_SINT:
 784       return MESA_FORMAT_RGBA_SINT32;
 785
 786    /* unsigned int formats */
 787    case PIPE_FORMAT_R8_UINT:
 788       return MESA_FORMAT_R_UINT8;
 789    case PIPE_FORMAT_R8G8_UINT:
 790       return MESA_FORMAT_RG_UINT8;
 791    case PIPE_FORMAT_R8G8B8_UINT:
 792       return MESA_FORMAT_RGB_UINT8;
 793    case PIPE_FORMAT_R8G8B8A8_UINT:
 794       return MESA_FORMAT_RGBA_UINT8;
 795
 796    case PIPE_FORMAT_R16_UINT:
 797       return MESA_FORMAT_R_UINT16;
 798    case PIPE_FORMAT_R16G16_UINT:
 799       return MESA_FORMAT_RG_UINT16;
 800    case PIPE_FORMAT_R16G16B16_UINT:
 801       return MESA_FORMAT_RGB_UINT16;
 802    case PIPE_FORMAT_R16G16B16A16_UINT:
 803       return MESA_FORMAT_RGBA_UINT16;
 804
 805    case PIPE_FORMAT_R32_UINT:
 806       return MESA_FORMAT_R_UINT32;
 807    case PIPE_FORMAT_R32G32_UINT:
 808       return MESA_FORMAT_RG_UINT32;
 809    case PIPE_FORMAT_R32G32B32_UINT:
 810       return MESA_FORMAT_RGB_UINT32;
 811    case PIPE_FORMAT_R32G32B32A32_UINT:
 812       return MESA_FORMAT_RGBA_UINT32;
 813
 814    case PIPE_FORMAT_RGTC1_UNORM:
 815       return MESA_FORMAT_R_RGTC1_UNORM;
 816    case PIPE_FORMAT_RGTC1_SNORM:
 817       return MESA_FORMAT_R_RGTC1_SNORM;
 818    case PIPE_FORMAT_RGTC2_UNORM:
 819       return MESA_FORMAT_RG_RGTC2_UNORM;
 820    case PIPE_FORMAT_RGTC2_SNORM:
 821       return MESA_FORMAT_RG_RGTC2_SNORM;
 822
 823    case PIPE_FORMAT_LATC1_UNORM:
 824       return MESA_FORMAT_L_LATC1_UNORM;
 825    case PIPE_FORMAT_LATC1_SNORM:
 826       return MESA_FORMAT_L_LATC1_SNORM;
 827    case PIPE_FORMAT_LATC2_UNORM:
 828       return MESA_FORMAT_LA_LATC2_UNORM;
 829    case PIPE_FORMAT_LATC2_SNORM:
 830       return MESA_FORMAT_LA_LATC2_SNORM;
 831
 832    case PIPE_FORMAT_ETC1_RGB8:
 833       return MESA_FORMAT_ETC1_RGB8;
 834
 835    case PIPE_FORMAT_BPTC_RGBA_UNORM:
 836       return MESA_FORMAT_BPTC_RGBA_UNORM;
 837    case PIPE_FORMAT_BPTC_SRGBA:
 838       return MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM;
 839    case PIPE_FORMAT_BPTC_RGB_FLOAT:
 840       return MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT;
 841    case PIPE_FORMAT_BPTC_RGB_UFLOAT:
 842       return MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT;
 843
 844    /* signed normalized formats */
 845    case PIPE_FORMAT_R8_SNORM:
 846       return MESA_FORMAT_R_SNORM8;
 847    case PIPE_FORMAT_RG88_SNORM:
 848       return MESA_FORMAT_R8G8_SNORM;
 849    case PIPE_FORMAT_GR88_SNORM:
 850       return MESA_FORMAT_G8R8_SNORM;
 851    case PIPE_FORMAT_RGBA8888_SNORM:
 852       return MESA_FORMAT_R8G8B8A8_SNORM;
 853    case PIPE_FORMAT_ABGR8888_SNORM:
 854       return MESA_FORMAT_A8B8G8R8_SNORM;
 855
 856    case PIPE_FORMAT_A8_SNORM:
 857       return MESA_FORMAT_A_SNORM8;
 858    case PIPE_FORMAT_L8_SNORM:
 859       return MESA_FORMAT_L_SNORM8;
 860    case PIPE_FORMAT_LA88_SNORM:
 861       return MESA_FORMAT_L8A8_SNORM;
 862    case PIPE_FORMAT_AL88_SNORM:
 863       return MESA_FORMAT_A8L8_SNORM;
 864    case PIPE_FORMAT_I8_SNORM:
 865       return MESA_FORMAT_I_SNORM8;
 866
 867    case PIPE_FORMAT_R16_SNORM:
 868       return MESA_FORMAT_R_SNORM16;
 869    case PIPE_FORMAT_RG1616_SNORM:
 870       return MESA_FORMAT_R16G16_SNORM;
 871    case PIPE_FORMAT_GR1616_SNORM:
 872       return MESA_FORMAT_G16R16_SNORM;
 873    case PIPE_FORMAT_R16G16B16A16_SNORM:
 874       return MESA_FORMAT_RGBA_SNORM16;
 875
 876    case PIPE_FORMAT_A16_SNORM:
 877       return MESA_FORMAT_A_SNORM16;
 878    case PIPE_FORMAT_L16_SNORM:
 879       return MESA_FORMAT_L_SNORM16;
 880    case PIPE_FORMAT_L16A16_SNORM:
 881       return MESA_FORMAT_LA_SNORM16;
 882    case PIPE_FORMAT_I16_SNORM:
 883       return MESA_FORMAT_I_SNORM16;
 884
 885    case PIPE_FORMAT_R9G9B9E5_FLOAT:
 886       return MESA_FORMAT_R9G9B9E5_FLOAT;
 887    case PIPE_FORMAT_R11G11B10_FLOAT:
 888       return MESA_FORMAT_R11G11B10_FLOAT;
 889
 890    case PIPE_FORMAT_B10G10R10A2_UINT:
 891       return MESA_FORMAT_B10G10R10A2_UINT;
 892    case PIPE_FORMAT_R10G10B10A2_UINT:
 893       return MESA_FORMAT_R10G10B10A2_UINT;
 894
 895    case PIPE_FORMAT_B4G4R4X4_UNORM:
 896       return MESA_FORMAT_B4G4R4X4_UNORM;
 897    case PIPE_FORMAT_B5G5R5X1_UNORM:
 898       return MESA_FORMAT_B5G5R5X1_UNORM;
 899    case PIPE_FORMAT_X1B5G5R5_UNORM:
 900       return MESA_FORMAT_X1B5G5R5_UNORM;
 901    case PIPE_FORMAT_RGBX8888_SNORM:
 902       return MESA_FORMAT_R8G8B8X8_SNORM;
 903    case PIPE_FORMAT_XBGR8888_SNORM:
 904       return MESA_FORMAT_X8B8G8R8_SNORM;
 905    case PIPE_FORMAT_RGBX8888_SRGB:
 906       return MESA_FORMAT_R8G8B8X8_SRGB;
 907    case PIPE_FORMAT_XBGR8888_SRGB:
 908       return MESA_FORMAT_X8B8G8R8_SRGB;
 909    case PIPE_FORMAT_R8G8B8X8_UINT:
 910       return MESA_FORMAT_RGBX_UINT8;
 911    case PIPE_FORMAT_R8G8B8X8_SINT:
 912       return MESA_FORMAT_RGBX_SINT8;
 913    case PIPE_FORMAT_B10G10R10X2_UNORM:
 914       return MESA_FORMAT_B10G10R10X2_UNORM;
 915    case PIPE_FORMAT_R16G16B16X16_UNORM:
 916       return MESA_FORMAT_RGBX_UNORM16;
 917    case PIPE_FORMAT_R16G16B16X16_SNORM:
 918       return MESA_FORMAT_RGBX_SNORM16;
 919    case PIPE_FORMAT_R16G16B16X16_FLOAT:
 920       return MESA_FORMAT_RGBX_FLOAT16;
 921    case PIPE_FORMAT_R16G16B16X16_UINT:
 922       return MESA_FORMAT_RGBX_UINT16;
 923    case PIPE_FORMAT_R16G16B16X16_SINT:
 924       return MESA_FORMAT_RGBX_SINT16;
 925    case PIPE_FORMAT_R32G32B32X32_FLOAT:
 926       return MESA_FORMAT_RGBX_FLOAT32;
 927    case PIPE_FORMAT_R32G32B32X32_UINT:
 928       return MESA_FORMAT_RGBX_UINT32;
 929    case PIPE_FORMAT_R32G32B32X32_SINT:
 930       return MESA_FORMAT_RGBX_SINT32;
 931
 932    case PIPE_FORMAT_BGRX8888_SRGB:
 933       return MESA_FORMAT_B8G8R8X8_SRGB;
 934    case PIPE_FORMAT_XRGB8888_SRGB:
 935       return MESA_FORMAT_X8R8G8B8_SRGB;
 936
 937    case PIPE_FORMAT_ETC2_RGB8:
 938       return MESA_FORMAT_ETC2_RGB8;
 939    case PIPE_FORMAT_ETC2_SRGB8:
 940       return MESA_FORMAT_ETC2_SRGB8;
 941    case PIPE_FORMAT_ETC2_RGB8A1:
 942       return MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1;
 943    case PIPE_FORMAT_ETC2_SRGB8A1:
 944       return MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1;
 945    case PIPE_FORMAT_ETC2_RGBA8:
 946       return MESA_FORMAT_ETC2_RGBA8_EAC;
 947    case PIPE_FORMAT_ETC2_SRGBA8:
 948       return MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC;
 949    case PIPE_FORMAT_ETC2_R11_UNORM:
 950       return MESA_FORMAT_ETC2_R11_EAC;
 951    case PIPE_FORMAT_ETC2_R11_SNORM:
 952       return MESA_FORMAT_ETC2_SIGNED_R11_EAC;
 953    case PIPE_FORMAT_ETC2_RG11_UNORM:
 954       return MESA_FORMAT_ETC2_RG11_EAC;
 955    case PIPE_FORMAT_ETC2_RG11_SNORM:
 956       return MESA_FORMAT_ETC2_SIGNED_RG11_EAC;
 957
 958    case PIPE_FORMAT_ASTC_4x4:
 959       return MESA_FORMAT_RGBA_ASTC_4x4;
 960    case PIPE_FORMAT_ASTC_5x4:
 961       return MESA_FORMAT_RGBA_ASTC_5x4;
 962    case PIPE_FORMAT_ASTC_5x5:
 963       return MESA_FORMAT_RGBA_ASTC_5x5;
 964    case PIPE_FORMAT_ASTC_6x5:
 965       return MESA_FORMAT_RGBA_ASTC_6x5;
 966    case PIPE_FORMAT_ASTC_6x6:
 967       return MESA_FORMAT_RGBA_ASTC_6x6;
 968    case PIPE_FORMAT_ASTC_8x5:
 969       return MESA_FORMAT_RGBA_ASTC_8x5;
 970    case PIPE_FORMAT_ASTC_8x6:
 971       return MESA_FORMAT_RGBA_ASTC_8x6;
 972    case PIPE_FORMAT_ASTC_8x8:
 973       return MESA_FORMAT_RGBA_ASTC_8x8;
 974    case PIPE_FORMAT_ASTC_10x5:
 975       return MESA_FORMAT_RGBA_ASTC_10x5;
 976    case PIPE_FORMAT_ASTC_10x6:
 977       return MESA_FORMAT_RGBA_ASTC_10x6;
 978    case PIPE_FORMAT_ASTC_10x8:
 979       return MESA_FORMAT_RGBA_ASTC_10x8;
 980    case PIPE_FORMAT_ASTC_10x10:
 981       return MESA_FORMAT_RGBA_ASTC_10x10;
 982    case PIPE_FORMAT_ASTC_12x10:
 983       return MESA_FORMAT_RGBA_ASTC_12x10;
 984    case PIPE_FORMAT_ASTC_12x12:
 985       return MESA_FORMAT_RGBA_ASTC_12x12;
 986
 987    case PIPE_FORMAT_ASTC_4x4_SRGB:
 988       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4;
 989    case PIPE_FORMAT_ASTC_5x4_SRGB:
 990       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4;
 991    case PIPE_FORMAT_ASTC_5x5_SRGB:
 992       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5;
 993    case PIPE_FORMAT_ASTC_6x5_SRGB:
 994       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5;
 995    case PIPE_FORMAT_ASTC_6x6_SRGB:
 996       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6;
 997    case PIPE_FORMAT_ASTC_8x5_SRGB:
 998       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x5;
 999    case PIPE_FORMAT_ASTC_8x6_SRGB:
1000       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x6;
1001    case PIPE_FORMAT_ASTC_8x8_SRGB:
1002       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x8;
1003    case PIPE_FORMAT_ASTC_10x5_SRGB:
1004       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x5;
1005    case PIPE_FORMAT_ASTC_10x6_SRGB:
1006       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x6;
1007    case PIPE_FORMAT_ASTC_10x8_SRGB:
1008       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x8;
1009    case PIPE_FORMAT_ASTC_10x10_SRGB:
1010       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x10;
1011    case PIPE_FORMAT_ASTC_12x10_SRGB:
1012       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x10;
1013    case PIPE_FORMAT_ASTC_12x12_SRGB:
1014       return MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x12;
1015
1016    default:
1017       return MESA_FORMAT_NONE;
1018    }
1019 }
1020
1021
1022 /**
1023  * Debug only: check that the two functions above correctly map
1024  * Mesa formats to Gallium formats and back again.
1025  */
1026 static void
1027 test_format_conversion(struct st_context *st)
1028 {
1029    GLuint i;
1030
1031    /* test all Mesa formats */
1032    for (i = 1; i < MESA_FORMAT_COUNT; i++) {
1033       enum pipe_format pf;
1034
1035       /* ETC formats are translated differently, skip them. */
1036       if (_mesa_is_format_etc2(i))
1037          continue;
1038       if (i == MESA_FORMAT_ETC1_RGB8 && !st->has_etc1)
1039          continue;
1040
1041       pf = st_mesa_format_to_pipe_format(st, i);
1042       if (pf != PIPE_FORMAT_NONE) {
1043          mesa_format MAYBE_UNUSED mf = st_pipe_format_to_mesa_format(pf);
1044          assert(mf == i);
1045       }
1046    }
1047
1048    /* Test all Gallium formats */
1049    for (i = 1; i < PIPE_FORMAT_COUNT; i++) {
1050       /* ETC formats are translated differently, skip them. */
1051       if (i == PIPE_FORMAT_ETC1_RGB8 && !st->has_etc1)
1052          continue;
1053
1054       mesa_format mf = st_pipe_format_to_mesa_format(i);
1055       if (_mesa_is_format_etc2(mf) && !st->has_etc2)
1056          continue;
1057
1058       if (mf != MESA_FORMAT_NONE) {
1059          enum pipe_format MAYBE_UNUSED pf =
1060             st_mesa_format_to_pipe_format(st, mf);
1061          assert(pf == i);
1062       }
1063    }
1064 }
1065
1066
1067 /**
1068  * Map GL texture formats to Gallium pipe formats.
1069  */
1070 struct format_mapping
1071 {
1072    GLenum glFormats[18];       /**< list of GLenum formats, 0-terminated */
1073    enum pipe_format pipeFormats[14]; /**< list of pipe formats, 0-terminated */
1074 };
1075
1076
1077 #define DEFAULT_RGBA_FORMATS \
1078       PIPE_FORMAT_R8G8B8A8_UNORM, \
1079       PIPE_FORMAT_B8G8R8A8_UNORM, \
1080       PIPE_FORMAT_A8R8G8B8_UNORM, \
1081       PIPE_FORMAT_A8B8G8R8_UNORM, \
1082       0
1083
1084 #define DEFAULT_RGB_FORMATS \
1085       PIPE_FORMAT_R8G8B8X8_UNORM, \
1086       PIPE_FORMAT_B8G8R8X8_UNORM, \
1087       PIPE_FORMAT_X8R8G8B8_UNORM, \
1088       PIPE_FORMAT_X8B8G8R8_UNORM, \
1089       PIPE_FORMAT_B5G6R5_UNORM, \
1090       DEFAULT_RGBA_FORMATS
1091
1092 #define DEFAULT_SRGBA_FORMATS \
1093       PIPE_FORMAT_R8G8B8A8_SRGB, \
1094       PIPE_FORMAT_B8G8R8A8_SRGB, \
1095       PIPE_FORMAT_A8R8G8B8_SRGB, \
1096       PIPE_FORMAT_A8B8G8R8_SRGB, \
1097       0
1098
1099 #define DEFAULT_DEPTH_FORMATS \
1100       PIPE_FORMAT_Z24X8_UNORM, \
1101       PIPE_FORMAT_X8Z24_UNORM, \
1102       PIPE_FORMAT_Z16_UNORM, \
1103       PIPE_FORMAT_Z24_UNORM_S8_UINT, \
1104       PIPE_FORMAT_S8_UINT_Z24_UNORM, \
1105       0
1106
1107 #define DEFAULT_SNORM8_RGBA_FORMATS \
1108       PIPE_FORMAT_R8G8B8A8_SNORM, \
1109       0
1110
1111 #define DEFAULT_UNORM16_RGBA_FORMATS \
1112       PIPE_FORMAT_R16G16B16A16_UNORM, \
1113       DEFAULT_RGBA_FORMATS
1114
1115
1116 /**
1117  * This table maps OpenGL texture format enums to Gallium pipe_format enums.
1118  * Multiple GL enums might map to multiple pipe_formats.
1119  * The first pipe format in the list that's supported is the one that's chosen.
1120  */
1121 static const struct format_mapping format_map[] = {
1122    /* Basic RGB, RGBA formats */
1123    {
1124       { GL_RGB10, 0 },
1125       { PIPE_FORMAT_R10G10B10X2_UNORM, PIPE_FORMAT_B10G10R10X2_UNORM,
1126         PIPE_FORMAT_R10G10B10A2_UNORM, PIPE_FORMAT_B10G10R10A2_UNORM,
1127         DEFAULT_RGB_FORMATS }
1128    },
1129    {
1130       { GL_RGB10_A2, 0 },
1131       { PIPE_FORMAT_R10G10B10A2_UNORM, PIPE_FORMAT_B10G10R10A2_UNORM,
1132         DEFAULT_RGBA_FORMATS }
1133    },
1134    {
1135       { 4, GL_RGBA, GL_RGBA8, 0 },
1136       { PIPE_FORMAT_R8G8B8A8_UNORM, DEFAULT_RGBA_FORMATS }
1137    },
1138    {
1139       { GL_BGRA, 0 },
1140       { DEFAULT_RGBA_FORMATS }
1141    },
1142    {
1143       { 3, GL_RGB, GL_RGB8, 0 },
1144       { PIPE_FORMAT_R8G8B8X8_UNORM, DEFAULT_RGB_FORMATS }
1145    },
1146    {
1147       { GL_RGB12, GL_RGB16, 0 },
1148       { PIPE_FORMAT_R16G16B16X16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
1149         DEFAULT_RGB_FORMATS }
1150    },
1151    {
1152       { GL_RGBA12, GL_RGBA16, 0 },
1153       { PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGBA_FORMATS }
1154    },
1155    {
1156       { GL_RGBA4, GL_RGBA2, 0 },
1157       { PIPE_FORMAT_B4G4R4A4_UNORM, DEFAULT_RGBA_FORMATS }
1158    },
1159    {
1160       { GL_RGB5_A1, 0 },
1161       { PIPE_FORMAT_B5G5R5A1_UNORM, PIPE_FORMAT_A1B5G5R5_UNORM,
1162         DEFAULT_RGBA_FORMATS }
1163    },
1164    {
1165       { GL_R3_G3_B2, 0 },
1166       { PIPE_FORMAT_B2G3R3_UNORM, PIPE_FORMAT_B5G6R5_UNORM,
1167         PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGB_FORMATS }
1168    },
1169    {
1170       { GL_RGB4 },
1171       { PIPE_FORMAT_B4G4R4X4_UNORM, PIPE_FORMAT_B4G4R4A4_UNORM,
1172         DEFAULT_RGB_FORMATS }
1173    },
1174    {
1175       { GL_RGB5 },
1176       { PIPE_FORMAT_B5G5R5X1_UNORM, PIPE_FORMAT_X1B5G5R5_UNORM,
1177         PIPE_FORMAT_B5G5R5A1_UNORM, PIPE_FORMAT_A1B5G5R5_UNORM,
1178         DEFAULT_RGB_FORMATS }
1179    },
1180    {
1181       { GL_RGB565 },
1182       { PIPE_FORMAT_B5G6R5_UNORM, DEFAULT_RGB_FORMATS }
1183    },
1184
1185    /* basic Alpha formats */
1186    {
1187       { GL_ALPHA12, GL_ALPHA16, 0 },
1188       { PIPE_FORMAT_A16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
1189         PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
1190    },
1191    {
1192       { GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_COMPRESSED_ALPHA, 0 },
1193       { PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
1194    },
1195
1196    /* basic Luminance formats */
1197    {
1198       { GL_LUMINANCE12, GL_LUMINANCE16, 0 },
1199       { PIPE_FORMAT_L16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
1200         PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
1201    },
1202    {
1203       { 1, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8, 0 },
1204       { PIPE_FORMAT_L8_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGB_FORMATS }
1205    },
1206
1207    /* basic Luminance/Alpha formats */
1208    {
1209       { GL_LUMINANCE12_ALPHA4, GL_LUMINANCE12_ALPHA12,
1210         GL_LUMINANCE16_ALPHA16, 0},
1211       { PIPE_FORMAT_L16A16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
1212         PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
1213    },
1214    {
1215       { 2, GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, GL_LUMINANCE8_ALPHA8, 0 },
1216       { PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
1217    },
1218    {
1219       { GL_LUMINANCE4_ALPHA4, 0 },
1220       { PIPE_FORMAT_L4A4_UNORM, PIPE_FORMAT_L8A8_UNORM,
1221         DEFAULT_RGBA_FORMATS }
1222    },
1223
1224    /* basic Intensity formats */
1225    {
1226       { GL_INTENSITY12, GL_INTENSITY16, 0 },
1227       { PIPE_FORMAT_I16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
1228         PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
1229    },
1230    {
1231       { GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8,
1232         GL_COMPRESSED_INTENSITY, 0 },
1233       { PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
1234    },
1235
1236    /* YCbCr */
1237    {
1238       { GL_YCBCR_MESA, 0 },
1239       { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV, 0 }
1240    },
1241
1242    /* compressed formats */ /* XXX PIPE_BIND_SAMPLER_VIEW only */
1243    {
1244       { GL_COMPRESSED_RGB, 0 },
1245       { PIPE_FORMAT_DXT1_RGB, DEFAULT_RGB_FORMATS }
1246    },
1247    {
1248       { GL_COMPRESSED_RGBA, 0 },
1249       { PIPE_FORMAT_DXT5_RGBA, DEFAULT_RGBA_FORMATS }
1250    },
1251    {
1252       { GL_RGB_S3TC, GL_RGB4_S3TC, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0 },
1253       { PIPE_FORMAT_DXT1_RGB, 0 }
1254    },
1255    {
1256       { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0 },
1257       { PIPE_FORMAT_DXT1_RGBA, 0 }
1258    },
1259    {
1260       { GL_RGBA_S3TC, GL_RGBA4_S3TC, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0 },
1261       { PIPE_FORMAT_DXT3_RGBA, 0 }
1262    },
1263    {
1264       { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0 },
1265       { PIPE_FORMAT_DXT5_RGBA, 0 }
1266    },
1267
1268 #if 0
1269    {
1270       { GL_COMPRESSED_RGB_FXT1_3DFX, 0 },
1271       { PIPE_FORMAT_RGB_FXT1, 0 }
1272    },
1273    {
1274       { GL_COMPRESSED_RGBA_FXT1_3DFX, 0 },
1275       { PIPE_FORMAT_RGBA_FXT1, 0 }
1276    },
1277 #endif
1278
1279    /* Depth formats */
1280    {
1281       { GL_DEPTH_COMPONENT16, 0 },
1282       { PIPE_FORMAT_Z16_UNORM, DEFAULT_DEPTH_FORMATS }
1283    },
1284    {
1285       { GL_DEPTH_COMPONENT24, 0 },
1286       { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
1287         DEFAULT_DEPTH_FORMATS }
1288    },
1289    {
1290       { GL_DEPTH_COMPONENT32, 0 },
1291       { PIPE_FORMAT_Z32_UNORM, DEFAULT_DEPTH_FORMATS }
1292    },
1293    {
1294       { GL_DEPTH_COMPONENT, 0 },
1295       { DEFAULT_DEPTH_FORMATS }
1296    },
1297    {
1298       { GL_DEPTH_COMPONENT32F, 0 },
1299       { PIPE_FORMAT_Z32_FLOAT, 0 }
1300    },
1301
1302    /* stencil formats */
1303    {
1304       { GL_STENCIL_INDEX, GL_STENCIL_INDEX1_EXT, GL_STENCIL_INDEX4_EXT,
1305         GL_STENCIL_INDEX8_EXT, GL_STENCIL_INDEX16_EXT, 0 },
1306       {
1307          PIPE_FORMAT_S8_UINT, PIPE_FORMAT_Z24_UNORM_S8_UINT,
1308          PIPE_FORMAT_S8_UINT_Z24_UNORM, 0
1309       }
1310    },
1311
1312    /* Depth / Stencil formats */
1313    {
1314       { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 },
1315       { PIPE_FORMAT_Z24_UNORM_S8_UINT, PIPE_FORMAT_S8_UINT_Z24_UNORM, 0 }
1316    },
1317    {
1318       { GL_DEPTH32F_STENCIL8, 0 },
1319       { PIPE_FORMAT_Z32_FLOAT_S8X24_UINT, 0 }
1320    },
1321
1322    /* sRGB formats */
1323    {
1324       { GL_SRGB_EXT, GL_SRGB8_EXT, 0 },
1325       { PIPE_FORMAT_R8G8B8X8_SRGB, PIPE_FORMAT_B8G8R8X8_SRGB,
1326         DEFAULT_SRGBA_FORMATS }
1327    },
1328    {
1329       { GL_SRGB_ALPHA_EXT, GL_SRGB8_ALPHA8_EXT, 0 },
1330       { PIPE_FORMAT_R8G8B8A8_SRGB, DEFAULT_SRGBA_FORMATS }
1331    },
1332    {
1333       { GL_COMPRESSED_SRGB_EXT, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 0 },
1334       { PIPE_FORMAT_DXT1_SRGB, PIPE_FORMAT_R8G8B8X8_SRGB,
1335         PIPE_FORMAT_B8G8R8X8_SRGB, DEFAULT_SRGBA_FORMATS }
1336    },
1337    {
1338       { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 0 },
1339       { PIPE_FORMAT_DXT1_SRGBA, 0 }
1340    },
1341    {
1342       { GL_COMPRESSED_SRGB_ALPHA_EXT,
1343         GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 0 },
1344       { PIPE_FORMAT_DXT3_SRGBA, DEFAULT_SRGBA_FORMATS }
1345    },
1346    {
1347       { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 0 },
1348       { PIPE_FORMAT_DXT5_SRGBA, 0 }
1349    },
1350    {
1351       { GL_SLUMINANCE_ALPHA_EXT, GL_SLUMINANCE8_ALPHA8_EXT,
1352         GL_COMPRESSED_SLUMINANCE_ALPHA_EXT, 0 },
1353       { PIPE_FORMAT_L8A8_SRGB, DEFAULT_SRGBA_FORMATS }
1354    },
1355    {
1356       { GL_SLUMINANCE_EXT, GL_SLUMINANCE8_EXT, GL_COMPRESSED_SLUMINANCE_EXT,
1357         0 },
1358       { PIPE_FORMAT_L8_SRGB, DEFAULT_SRGBA_FORMATS }
1359    },
1360
1361    /* 16-bit float formats */
1362    {
1363       { GL_RGBA16F_ARB, 0 },
1364       { PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1365    },
1366    {
1367       { GL_RGB16F_ARB, 0 },
1368       { PIPE_FORMAT_R16G16B16_FLOAT, PIPE_FORMAT_R16G16B16X16_FLOAT,
1369         PIPE_FORMAT_R16G16B16A16_FLOAT,
1370         PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1371    },
1372    {
1373       { GL_LUMINANCE_ALPHA16F_ARB, 0 },
1374       { PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1375         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1376    },
1377    {
1378       { GL_ALPHA16F_ARB, 0 },
1379       { PIPE_FORMAT_A16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1380         PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1381         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1382    },
1383    {
1384       { GL_INTENSITY16F_ARB, 0 },
1385       { PIPE_FORMAT_I16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1386         PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1387         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1388    },
1389    {
1390       { GL_LUMINANCE16F_ARB, 0 },
1391       { PIPE_FORMAT_L16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1392         PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1393         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1394    },
1395    {
1396       { GL_R16F, 0 },
1397       { PIPE_FORMAT_R16_FLOAT, PIPE_FORMAT_R16G16_FLOAT,
1398         PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1399         PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1400    },
1401    {
1402       { GL_RG16F, 0 },
1403       { PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1404         PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1405    },
1406
1407    /* 32-bit float formats */
1408    {
1409       { GL_RGBA32F_ARB, 0 },
1410       { PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1411    },
1412    {
1413       { GL_RGB32F_ARB, 0 },
1414       { PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32X32_FLOAT,
1415         PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1416    },
1417    {
1418       { GL_LUMINANCE_ALPHA32F_ARB, 0 },
1419       { PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1420    },
1421    {
1422       { GL_ALPHA32F_ARB, 0 },
1423       { PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1424         PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1425    },
1426    {
1427       { GL_INTENSITY32F_ARB, 0 },
1428       { PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1429         PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1430    },
1431    {
1432       { GL_LUMINANCE32F_ARB, 0 },
1433       { PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1434         PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1435    },
1436    {
1437       { GL_R32F, 0 },
1438       { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT,
1439         PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1440    },
1441    {
1442       { GL_RG32F, 0 },
1443       { PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1444    },
1445
1446    /* R, RG formats */
1447    {
1448       { GL_RED, GL_R8, 0 },
1449       { PIPE_FORMAT_R8_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1450    },
1451    {
1452       { GL_RG, GL_RG8, 0 },
1453       { PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1454    },
1455    {
1456       { GL_R16, 0 },
1457       { PIPE_FORMAT_R16_UNORM, PIPE_FORMAT_R16G16_UNORM,
1458         DEFAULT_UNORM16_RGBA_FORMATS }
1459    },
1460    {
1461       { GL_RG16, 0 },
1462       { PIPE_FORMAT_R16G16_UNORM, DEFAULT_UNORM16_RGBA_FORMATS }
1463    },
1464
1465    /* compressed R, RG formats */
1466    {
1467       { GL_COMPRESSED_RED, GL_COMPRESSED_RED_RGTC1, 0 },
1468       { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_R8_UNORM, DEFAULT_RGBA_FORMATS }
1469    },
1470    {
1471       { GL_COMPRESSED_SIGNED_RED_RGTC1, 0 },
1472       { PIPE_FORMAT_RGTC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1473    },
1474    {
1475       { GL_COMPRESSED_RG, GL_COMPRESSED_RG_RGTC2, 0 },
1476       { PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1477    },
1478    {
1479       { GL_COMPRESSED_SIGNED_RG_RGTC2, 0 },
1480       { PIPE_FORMAT_RGTC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1481    },
1482    {
1483       { GL_COMPRESSED_LUMINANCE, GL_COMPRESSED_LUMINANCE_LATC1_EXT, 0 },
1484       { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGBA_FORMATS }
1485    },
1486    {
1487       { GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT, 0 },
1488       { PIPE_FORMAT_LATC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1489    },
1490    {
1491       { GL_COMPRESSED_LUMINANCE_ALPHA, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT,
1492         GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI, 0 },
1493       { PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
1494    },
1495    {
1496       { GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT, 0 },
1497       { PIPE_FORMAT_LATC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1498    },
1499
1500    /* ETC1 */
1501    {
1502       { GL_ETC1_RGB8_OES, 0 },
1503       { PIPE_FORMAT_ETC1_RGB8, 0 }
1504    },
1505
1506    /* ETC2 */
1507    {
1508       { GL_COMPRESSED_RGB8_ETC2, 0 },
1509       { PIPE_FORMAT_ETC2_RGB8, 0 }
1510    },
1511    {
1512       { GL_COMPRESSED_SRGB8_ETC2, 0 },
1513       { PIPE_FORMAT_ETC2_SRGB8, 0 }
1514    },
1515    {
1516       { GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, 0 },
1517       { PIPE_FORMAT_ETC2_RGB8A1, 0 }
1518    },
1519    {
1520       { GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, 0 },
1521       { PIPE_FORMAT_ETC2_SRGB8A1, 0 }
1522    },
1523    {
1524       { GL_COMPRESSED_RGBA8_ETC2_EAC, 0 },
1525       { PIPE_FORMAT_ETC2_RGBA8, 0 }
1526    },
1527    {
1528       { GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, 0 },
1529       { PIPE_FORMAT_ETC2_SRGBA8, 0 }
1530    },
1531    {
1532       { GL_COMPRESSED_R11_EAC, 0 },
1533       { PIPE_FORMAT_ETC2_R11_UNORM, 0 }
1534    },
1535    {
1536       { GL_COMPRESSED_SIGNED_R11_EAC, 0 },
1537       { PIPE_FORMAT_ETC2_R11_SNORM, 0 }
1538    },
1539    {
1540       { GL_COMPRESSED_RG11_EAC, 0 },
1541       { PIPE_FORMAT_ETC2_RG11_UNORM, 0 }
1542    },
1543    {
1544       { GL_COMPRESSED_SIGNED_RG11_EAC, 0 },
1545       { PIPE_FORMAT_ETC2_RG11_SNORM, 0 }
1546    },
1547
1548    /* BPTC */
1549    {
1550       { GL_COMPRESSED_RGBA_BPTC_UNORM, 0 },
1551       { PIPE_FORMAT_BPTC_RGBA_UNORM, 0 },
1552    },
1553    {
1554       { GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM, 0 },
1555       { PIPE_FORMAT_BPTC_SRGBA, 0 },
1556    },
1557    {
1558       { GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT, 0 },
1559       { PIPE_FORMAT_BPTC_RGB_FLOAT, 0 },
1560    },
1561    {
1562       { GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT, 0 },
1563       { PIPE_FORMAT_BPTC_RGB_UFLOAT, 0 },
1564    },
1565
1566    /* ASTC */
1567    {
1568       { GL_COMPRESSED_RGBA_ASTC_4x4_KHR, 0 },
1569       { PIPE_FORMAT_ASTC_4x4, 0},
1570    },
1571    {
1572       { GL_COMPRESSED_RGBA_ASTC_5x4_KHR, 0 },
1573       { PIPE_FORMAT_ASTC_5x4, 0},
1574    },
1575    {
1576       { GL_COMPRESSED_RGBA_ASTC_5x5_KHR, 0 },
1577       { PIPE_FORMAT_ASTC_5x5, 0},
1578    },
1579    {
1580       { GL_COMPRESSED_RGBA_ASTC_6x5_KHR, 0 },
1581       { PIPE_FORMAT_ASTC_6x5, 0},
1582    },
1583    {
1584       { GL_COMPRESSED_RGBA_ASTC_6x6_KHR, 0 },
1585       { PIPE_FORMAT_ASTC_6x6, 0},
1586    },
1587    {
1588       { GL_COMPRESSED_RGBA_ASTC_8x5_KHR, 0 },
1589       { PIPE_FORMAT_ASTC_8x5, 0},
1590    },
1591    {
1592       { GL_COMPRESSED_RGBA_ASTC_8x6_KHR, 0 },
1593       { PIPE_FORMAT_ASTC_8x6, 0},
1594    },
1595    {
1596       { GL_COMPRESSED_RGBA_ASTC_8x8_KHR, 0 },
1597       { PIPE_FORMAT_ASTC_8x8, 0},
1598    },
1599    {
1600       { GL_COMPRESSED_RGBA_ASTC_10x5_KHR, 0 },
1601       { PIPE_FORMAT_ASTC_10x5, 0},
1602    },
1603    {
1604       { GL_COMPRESSED_RGBA_ASTC_10x6_KHR, 0 },
1605       { PIPE_FORMAT_ASTC_10x6, 0},
1606    },
1607    {
1608       { GL_COMPRESSED_RGBA_ASTC_10x8_KHR, 0 },
1609       { PIPE_FORMAT_ASTC_10x8, 0},
1610    },
1611    {
1612       { GL_COMPRESSED_RGBA_ASTC_10x10_KHR, 0 },
1613       { PIPE_FORMAT_ASTC_10x10, 0},
1614    },
1615    {
1616       { GL_COMPRESSED_RGBA_ASTC_12x10_KHR, 0 },
1617       { PIPE_FORMAT_ASTC_12x10, 0},
1618    },
1619    {
1620       { GL_COMPRESSED_RGBA_ASTC_12x12_KHR, 0 },
1621       { PIPE_FORMAT_ASTC_12x12, 0},
1622    },
1623
1624    {
1625       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR, 0 },
1626       { PIPE_FORMAT_ASTC_4x4_SRGB, 0},
1627    },
1628    {
1629       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR, 0 },
1630       { PIPE_FORMAT_ASTC_5x4_SRGB, 0},
1631    },
1632    {
1633       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR, 0 },
1634       { PIPE_FORMAT_ASTC_5x5_SRGB, 0},
1635    },
1636    {
1637       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR, 0 },
1638       { PIPE_FORMAT_ASTC_6x5_SRGB, 0},
1639    },
1640    {
1641       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR, 0 },
1642       { PIPE_FORMAT_ASTC_6x6_SRGB, 0},
1643    },
1644    {
1645       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR, 0 },
1646       { PIPE_FORMAT_ASTC_8x5_SRGB, 0},
1647    },
1648    {
1649       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR, 0 },
1650       { PIPE_FORMAT_ASTC_8x6_SRGB, 0},
1651    },
1652    {
1653       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR, 0 },
1654       { PIPE_FORMAT_ASTC_8x8_SRGB, 0},
1655    },
1656    {
1657       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR, 0 },
1658       { PIPE_FORMAT_ASTC_10x5_SRGB, 0},
1659    },
1660    {
1661       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR, 0 },
1662       { PIPE_FORMAT_ASTC_10x6_SRGB, 0},
1663    },
1664    {
1665       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR, 0 },
1666       { PIPE_FORMAT_ASTC_10x8_SRGB, 0},
1667    },
1668    {
1669       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR, 0 },
1670       { PIPE_FORMAT_ASTC_10x10_SRGB, 0},
1671    },
1672    {
1673       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR, 0 },
1674       { PIPE_FORMAT_ASTC_12x10_SRGB, 0},
1675    },
1676    {
1677       { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR, 0 },
1678       { PIPE_FORMAT_ASTC_12x12_SRGB, 0},
1679    },
1680
1681    /* signed/unsigned integer formats.
1682     */
1683    {
1684       { GL_RGBA_INTEGER_EXT,
1685         GL_BGRA_INTEGER_EXT,
1686         GL_RGBA8I_EXT, 0 },
1687       { PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1688    },
1689    {
1690       { GL_RGB_INTEGER_EXT,
1691         GL_BGR_INTEGER_EXT,
1692         GL_RGB8I_EXT,
1693         GL_BLUE_INTEGER_EXT, 0 },
1694       { PIPE_FORMAT_R8G8B8_SINT, PIPE_FORMAT_R8G8B8X8_SINT,
1695         PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1696    },
1697    {
1698       { GL_ALPHA_INTEGER_EXT,
1699         GL_ALPHA8I_EXT, 0 },
1700       { PIPE_FORMAT_A8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1701    },
1702    {
1703       { GL_ALPHA16I_EXT, 0 },
1704       { PIPE_FORMAT_A16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }
1705    },
1706    {
1707       { GL_ALPHA32I_EXT, 0 },
1708       { PIPE_FORMAT_A32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }
1709    },
1710    {
1711       { GL_ALPHA8UI_EXT, 0 },
1712       { PIPE_FORMAT_A8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1713    },
1714    {
1715       { GL_ALPHA16UI_EXT, 0 },
1716       { PIPE_FORMAT_A16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1717    },
1718    {
1719       { GL_ALPHA32UI_EXT, 0 },
1720       { PIPE_FORMAT_A32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1721    },
1722    {
1723       { GL_INTENSITY8I_EXT, 0 },
1724       { PIPE_FORMAT_I8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1725    },
1726    {
1727       { GL_INTENSITY16I_EXT, 0 },
1728       { PIPE_FORMAT_I16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }
1729    },
1730    {
1731       { GL_INTENSITY32I_EXT, 0 },
1732       { PIPE_FORMAT_I32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }
1733    },
1734    {
1735       { GL_INTENSITY8UI_EXT, 0 },
1736       { PIPE_FORMAT_I8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1737    },
1738    {
1739       { GL_INTENSITY16UI_EXT, 0 },
1740       { PIPE_FORMAT_I16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1741    },
1742    {
1743       { GL_INTENSITY32UI_EXT, 0 },
1744       { PIPE_FORMAT_I32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1745    },
1746    {
1747       { GL_LUMINANCE8I_EXT, 0 },
1748       { PIPE_FORMAT_L8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1749    },
1750    {
1751       { GL_LUMINANCE16I_EXT, 0 },
1752       { PIPE_FORMAT_L16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }
1753    },
1754    {
1755       { GL_LUMINANCE32I_EXT, 0 },
1756       { PIPE_FORMAT_L32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }
1757    },
1758    {
1759       { GL_LUMINANCE_INTEGER_EXT,
1760         GL_LUMINANCE8UI_EXT, 0 },
1761       { PIPE_FORMAT_L8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1762    },
1763    {
1764       { GL_LUMINANCE16UI_EXT, 0 },
1765       { PIPE_FORMAT_L16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1766    },
1767    {
1768       { GL_LUMINANCE32UI_EXT, 0 },
1769       { PIPE_FORMAT_L32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1770    },
1771    {
1772       { GL_LUMINANCE_ALPHA_INTEGER_EXT,
1773         GL_LUMINANCE_ALPHA8I_EXT, 0 },
1774       { PIPE_FORMAT_L8A8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1775    },
1776    {
1777       { GL_LUMINANCE_ALPHA16I_EXT, 0 },
1778       { PIPE_FORMAT_L16A16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }
1779    },
1780    {
1781       { GL_LUMINANCE_ALPHA32I_EXT, 0 },
1782       { PIPE_FORMAT_L32A32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }
1783    },
1784    {
1785       { GL_LUMINANCE_ALPHA8UI_EXT, 0 },
1786       { PIPE_FORMAT_L8A8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1787    },
1788    {
1789       { GL_LUMINANCE_ALPHA16UI_EXT, 0 },
1790       { PIPE_FORMAT_L16A16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1791    },
1792    {
1793       { GL_LUMINANCE_ALPHA32UI_EXT, 0 },
1794       { PIPE_FORMAT_L32A32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1795    },
1796    {
1797       { GL_RGB16I_EXT, 0 },
1798       { PIPE_FORMAT_R16G16B16_SINT, PIPE_FORMAT_R16G16B16X16_SINT,
1799         PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1800    },
1801    {
1802       { GL_RGBA16I_EXT, 0 },
1803       { PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1804    },
1805    {
1806       { GL_RGB32I_EXT, 0 },
1807       { PIPE_FORMAT_R32G32B32_SINT, PIPE_FORMAT_R32G32B32X32_SINT,
1808         PIPE_FORMAT_R32G32B32A32_SINT, 0 },
1809    },
1810    {
1811       { GL_RGBA32I_EXT, 0 },
1812       { PIPE_FORMAT_R32G32B32A32_SINT, 0 }
1813    },
1814    {
1815       { GL_RGBA8UI_EXT, 0 },
1816       { PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1817    },
1818    {
1819       { GL_RGB8UI_EXT, 0 },
1820       { PIPE_FORMAT_R8G8B8_UINT, PIPE_FORMAT_R8G8B8X8_UINT,
1821         PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1822    },
1823    {
1824       { GL_RGB16UI_EXT, 0 },
1825       { PIPE_FORMAT_R16G16B16_UINT, PIPE_FORMAT_R16G16B16X16_UINT,
1826         PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1827    },
1828    {
1829       { GL_RGBA16UI_EXT, 0 },
1830       { PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1831    },
1832    {
1833       { GL_RGB32UI_EXT, 0},
1834       { PIPE_FORMAT_R32G32B32_UINT, PIPE_FORMAT_R32G32B32X32_UINT,
1835         PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1836    },
1837    {
1838       { GL_RGBA32UI_EXT, 0},
1839       { PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1840    },
1841    {
1842      { GL_R8I, GL_RED_INTEGER_EXT, 0},
1843      { PIPE_FORMAT_R8_SINT, 0},
1844    },
1845    {
1846      { GL_R16I, 0},
1847      { PIPE_FORMAT_R16_SINT, 0},
1848    },
1849    {
1850      { GL_R32I, 0},
1851      { PIPE_FORMAT_R32_SINT, 0},
1852    },
1853   {
1854      { GL_R8UI, 0},
1855      { PIPE_FORMAT_R8_UINT, 0},
1856    },
1857    {
1858      { GL_R16UI, 0},
1859      { PIPE_FORMAT_R16_UINT, 0},
1860    },
1861    {
1862      { GL_R32UI, 0},
1863      { PIPE_FORMAT_R32_UINT, 0},
1864    },
1865    {
1866      { GL_RG8I, GL_GREEN_INTEGER_EXT, 0},
1867      { PIPE_FORMAT_R8G8_SINT, 0},
1868    },
1869    {
1870      { GL_RG16I, 0},
1871      { PIPE_FORMAT_R16G16_SINT, 0},
1872    },
1873    {
1874      { GL_RG32I, 0},
1875      { PIPE_FORMAT_R32G32_SINT, 0},
1876    },
1877   {
1878      { GL_RG8UI, 0},
1879      { PIPE_FORMAT_R8G8_UINT, 0},
1880    },
1881    {
1882      { GL_RG16UI, 0},
1883      { PIPE_FORMAT_R16G16_UINT, 0},
1884    },
1885    {
1886      { GL_RG32UI, 0},
1887      { PIPE_FORMAT_R32G32_UINT, 0},
1888    },
1889    /* signed normalized formats */
1890    {
1891       { GL_RED_SNORM, GL_R8_SNORM, 0 },
1892       { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM,
1893         PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1894    },
1895    {
1896       { GL_R16_SNORM, 0 },
1897       { PIPE_FORMAT_R16_SNORM,
1898         PIPE_FORMAT_R16G16_SNORM,
1899         PIPE_FORMAT_R16G16B16A16_SNORM,
1900         PIPE_FORMAT_R8_SNORM,
1901         PIPE_FORMAT_R8G8_SNORM,
1902         PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1903    },
1904    {
1905       { GL_RG_SNORM, GL_RG8_SNORM, 0 },
1906       { PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1907    },
1908    {
1909       { GL_RG16_SNORM, 0 },
1910       { PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1911         PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1912    },
1913    {
1914       { GL_RGB_SNORM, GL_RGB8_SNORM, 0 },
1915       { PIPE_FORMAT_R8G8B8X8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1916    },
1917    {
1918       { GL_RGBA_SNORM, GL_RGBA8_SNORM, 0 },
1919       { PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1920    },
1921    {
1922       { GL_RGB16_SNORM, 0 },
1923       { PIPE_FORMAT_R16G16B16X16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1924         PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1925    },
1926    {
1927       { GL_RGBA16_SNORM, 0 },
1928       { PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1929    },
1930    {
1931       { GL_ALPHA_SNORM, GL_ALPHA8_SNORM, 0 },
1932       { PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1933    },
1934    {
1935       { GL_ALPHA16_SNORM, 0 },
1936       { PIPE_FORMAT_A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1937         PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1938    },
1939    {
1940       { GL_LUMINANCE_SNORM, GL_LUMINANCE8_SNORM, 0 },
1941       { PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1942    },
1943    {
1944       { GL_LUMINANCE16_SNORM, 0 },
1945       { PIPE_FORMAT_L16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1946         PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1947    },
1948    {
1949       { GL_LUMINANCE_ALPHA_SNORM, GL_LUMINANCE8_ALPHA8_SNORM, 0 },
1950       { PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1951    },
1952    {
1953       { GL_LUMINANCE16_ALPHA16_SNORM, 0 },
1954       { PIPE_FORMAT_L16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1955         PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1956    },
1957    {
1958       { GL_INTENSITY_SNORM, GL_INTENSITY8_SNORM, 0 },
1959       { PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1960    },
1961    {
1962       { GL_INTENSITY16_SNORM, 0 },
1963       { PIPE_FORMAT_I16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1964         PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1965    },
1966    {
1967       { GL_RGB9_E5, 0 },
1968       { PIPE_FORMAT_R9G9B9E5_FLOAT, 0 }
1969    },
1970    {
1971       { GL_R11F_G11F_B10F, 0 },
1972       { PIPE_FORMAT_R11G11B10_FLOAT, 0 }
1973    },
1974    {
1975       { GL_RGB10_A2UI, 0 },
1976       { PIPE_FORMAT_R10G10B10A2_UINT, PIPE_FORMAT_B10G10R10A2_UINT, 0 }
1977    },
1978 };
1979
1980
1981 /**
1982  * Return first supported format from the given list.
1983  * \param allow_dxt  indicates whether it's OK to return a DXT format.
1984  */
1985 static enum pipe_format
1986 find_supported_format(struct pipe_screen *screen,
1987                       const enum pipe_format formats[],
1988                       enum pipe_texture_target target,
1989                       unsigned sample_count,
1990                       unsigned tex_usage,
1991                       boolean allow_dxt)
1992 {
1993    uint i;
1994    for (i = 0; formats[i]; i++) {
1995       if (screen->is_format_supported(screen, formats[i], target,
1996                                       sample_count, tex_usage)) {
1997          if (!allow_dxt && util_format_is_s3tc(formats[i])) {
1998             /* we can't return a dxt format, continue searching */
1999             continue;
2000          }
2001
2002          return formats[i];
2003       }
2004    }
2005    return PIPE_FORMAT_NONE;
2006 }
2007
2008 struct exact_format_mapping
2009 {
2010    GLenum format;
2011    GLenum type;
2012    enum pipe_format pformat;
2013 };
2014
2015 static const struct exact_format_mapping rgba8888_tbl[] =
2016 {
2017    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_ABGR8888_UNORM },
2018    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_ABGR8888_UNORM },
2019    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_RGBA8888_UNORM },
2020    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_RGBA8888_UNORM },
2021    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_ARGB8888_UNORM },
2022    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_BGRA8888_UNORM },
2023    { GL_RGBA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_R8G8B8A8_UNORM },
2024    { GL_ABGR_EXT, GL_UNSIGNED_BYTE,               PIPE_FORMAT_A8B8G8R8_UNORM },
2025    { GL_BGRA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_B8G8R8A8_UNORM },
2026    { 0,           0,                              0                          }
2027 };
2028
2029 static const struct exact_format_mapping rgbx8888_tbl[] =
2030 {
2031    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_XBGR8888_UNORM },
2032    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_XBGR8888_UNORM },
2033    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_RGBX8888_UNORM },
2034    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_RGBX8888_UNORM },
2035    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_XRGB8888_UNORM },
2036    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_BGRX8888_UNORM },
2037    { GL_RGBA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_R8G8B8X8_UNORM },
2038    { GL_ABGR_EXT, GL_UNSIGNED_BYTE,               PIPE_FORMAT_X8B8G8R8_UNORM },
2039    { GL_BGRA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_B8G8R8X8_UNORM },
2040    { 0,           0,                              0                          }
2041 };
2042
2043 /**
2044  * For unsized/base internal formats, we may choose a convenient effective
2045  * internal format for {format, type}. If one exists, return that, otherwise
2046  * return PIPE_FORMAT_NONE.
2047  */
2048 static enum pipe_format
2049 find_exact_format(GLint internalFormat, GLenum format, GLenum type)
2050 {
2051    uint i;
2052    const struct exact_format_mapping* tbl;
2053
2054    if (format == GL_NONE || type == GL_NONE)
2055       return PIPE_FORMAT_NONE;
2056
2057    switch (internalFormat) {
2058    case 4:
2059    case GL_RGBA:
2060       tbl = rgba8888_tbl;
2061       break;
2062    case 3:
2063    case GL_RGB:
2064       tbl = rgbx8888_tbl;
2065       break;
2066    default:
2067       return PIPE_FORMAT_NONE;
2068    }
2069
2070    for (i = 0; tbl[i].format; i++)
2071       if (tbl[i].format == format && tbl[i].type == type)
2072          return tbl[i].pformat;
2073
2074    return PIPE_FORMAT_NONE;
2075 }
2076
2077 /**
2078  * Given an OpenGL internalFormat value for a texture or surface, return
2079  * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
2080  * This is called during glTexImage2D, for example.
2081  *
2082  * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus
2083  * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if
2084  * we want render-to-texture ability.
2085  *
2086  * \param internalFormat  the user value passed to glTexImage2D
2087  * \param target  one of PIPE_TEXTURE_x
2088  * \param bindings  bitmask of PIPE_BIND_x flags.
2089  * \param allow_dxt  indicates whether it's OK to return a DXT format.  This
2090  *                   only matters when internalFormat names a generic or
2091  *                   specific compressed format.  And that should only happen
2092  *                   when we're getting called from gl[Copy]TexImage().
2093  */
2094 enum pipe_format
2095 st_choose_format(struct st_context *st, GLenum internalFormat,
2096                  GLenum format, GLenum type,
2097                  enum pipe_texture_target target, unsigned sample_count,
2098                  unsigned bindings, boolean allow_dxt)
2099 {
2100    struct pipe_screen *screen = st->pipe->screen;
2101    unsigned i;
2102    int j;
2103    enum pipe_format pf;
2104
2105 #ifdef DEBUG
2106    {
2107       static boolean firstCall = TRUE;
2108       if (firstCall) {
2109          test_format_conversion(st);
2110          firstCall = FALSE;
2111       }
2112    }
2113 #else
2114    (void) test_format_conversion;
2115 #endif
2116
2117    /* can't render to compressed formats at this time */
2118    if (_mesa_is_compressed_format(st->ctx, internalFormat)
2119        && (bindings & ~PIPE_BIND_SAMPLER_VIEW)) {
2120       return PIPE_FORMAT_NONE;
2121    }
2122
2123    /* search for exact matches */
2124    pf = find_exact_format(internalFormat, format, type);
2125    if (pf != PIPE_FORMAT_NONE &&
2126        screen->is_format_supported(screen, pf,
2127                                    target, sample_count, bindings))
2128       return pf;
2129
2130    /* search table for internalFormat */
2131    for (i = 0; i < ARRAY_SIZE(format_map); i++) {
2132       const struct format_mapping *mapping = &format_map[i];
2133       for (j = 0; mapping->glFormats[j]; j++) {
2134          if (mapping->glFormats[j] == internalFormat) {
2135             /* Found the desired internal format.  Find first pipe format
2136              * which is supported by the driver.
2137              */
2138             return find_supported_format(screen, mapping->pipeFormats,
2139                                          target, sample_count, bindings,
2140                                          allow_dxt);
2141          }
2142       }
2143    }
2144
2145    _mesa_problem(NULL, "unhandled format!\n");
2146    return PIPE_FORMAT_NONE;
2147 }
2148
2149
2150 /**
2151  * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
2152  */
2153 enum pipe_format
2154 st_choose_renderbuffer_format(struct st_context *st,
2155                               GLenum internalFormat, unsigned sample_count)
2156 {
2157    uint usage;
2158    if (_mesa_is_depth_or_stencil_format(internalFormat))
2159       usage = PIPE_BIND_DEPTH_STENCIL;
2160    else
2161       usage = PIPE_BIND_RENDER_TARGET;
2162    return st_choose_format(st, internalFormat, GL_NONE, GL_NONE,
2163                            PIPE_TEXTURE_2D, sample_count, usage, FALSE);
2164 }
2165
2166
2167 /**
2168  * Given an OpenGL user-requested format and type, and swapBytes state,
2169  * return the format which exactly matches those parameters, so that
2170  * a memcpy-based transfer can be done.
2171  *
2172  * If no format is supported, return PIPE_FORMAT_NONE.
2173  */
2174 enum pipe_format
2175 st_choose_matching_format(struct st_context *st, unsigned bind,
2176                           GLenum format, GLenum type, GLboolean swapBytes)
2177 {
2178    struct pipe_screen *screen = st->pipe->screen;
2179    mesa_format mesa_format;
2180
2181    for (mesa_format = 1; mesa_format < MESA_FORMAT_COUNT; mesa_format++) {
2182       if (_mesa_get_format_color_encoding(mesa_format) == GL_SRGB) {
2183          continue;
2184       }
2185       if (_mesa_get_format_bits(mesa_format, GL_TEXTURE_INTENSITY_SIZE) > 0) {
2186          /* If `format` is GL_RED/GL_RED_INTEGER, then we might match some
2187           * intensity formats, which we don't want.
2188           */
2189          continue;
2190       }
2191
2192       if (_mesa_format_matches_format_and_type(mesa_format, format, type,
2193                                                swapBytes, NULL)) {
2194          enum pipe_format format =
2195             st_mesa_format_to_pipe_format(st, mesa_format);
2196
2197          if (format &&
2198              screen->is_format_supported(screen, format, PIPE_TEXTURE_2D, 0,
2199                                          bind)) {
2200             return format;
2201          }
2202          /* It's unlikely to find 2 matching Mesa formats. */
2203          break;
2204       }
2205    }
2206    return PIPE_FORMAT_NONE;
2207 }
2208
2209
2210 /**
2211  * Called via ctx->Driver.ChooseTextureFormat().
2212  */
2213 mesa_format
2214 st_ChooseTextureFormat(struct gl_context *ctx, GLenum target,
2215                        GLint internalFormat,
2216                        GLenum format, GLenum type)
2217 {
2218    struct st_context *st = st_context(ctx);
2219    enum pipe_format pFormat;
2220    mesa_format mFormat;
2221    unsigned bindings;
2222    bool is_renderbuffer = false;
2223    enum pipe_texture_target pTarget;
2224
2225    if (target == GL_RENDERBUFFER) {
2226       pTarget = PIPE_TEXTURE_2D;
2227       is_renderbuffer = true;
2228    } else {
2229       pTarget = gl_target_to_pipe(target);
2230    }
2231
2232    if (target == GL_TEXTURE_1D || target == GL_TEXTURE_1D_ARRAY) {
2233       /* We don't do compression for these texture targets because of
2234        * difficulty with sub-texture updates on non-block boundaries, etc.
2235        * So change the internal format request to an uncompressed format.
2236        */
2237       internalFormat =
2238         _mesa_generic_compressed_format_to_uncompressed_format(internalFormat);
2239    }
2240
2241    /* GL textures may wind up being render targets, but we don't know
2242     * that in advance.  Specify potential render target flags now for formats
2243     * that we know should always be renderable.
2244     */
2245    bindings = PIPE_BIND_SAMPLER_VIEW;
2246    if (_mesa_is_depth_or_stencil_format(internalFormat))
2247       bindings |= PIPE_BIND_DEPTH_STENCIL;
2248    else if (is_renderbuffer || internalFormat == 3 || internalFormat == 4 ||
2249             internalFormat == GL_RGB || internalFormat == GL_RGBA ||
2250             internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||
2251             internalFormat == GL_BGRA ||
2252             internalFormat == GL_RGB16F ||
2253             internalFormat == GL_RGBA16F ||
2254             internalFormat == GL_RGB32F ||
2255             internalFormat == GL_RGBA32F)
2256          bindings |= PIPE_BIND_RENDER_TARGET;
2257
2258    /* GLES allows the driver to choose any format which matches
2259     * the format+type combo, because GLES only supports unsized internal
2260     * formats and expects the driver to choose whatever suits it.
2261     */
2262    if (_mesa_is_gles(ctx)) {
2263       GLenum baseFormat = _mesa_base_tex_format(ctx, internalFormat);
2264       GLenum basePackFormat = _mesa_base_pack_format(format);
2265       GLenum iformat = internalFormat;
2266
2267       /* Treat GL_BGRA as GL_RGBA. */
2268       if (iformat == GL_BGRA)
2269          iformat = GL_RGBA;
2270
2271       /* Check if the internalformat is unsized and compatible
2272        * with the "format".
2273        */
2274       if (iformat == baseFormat && iformat == basePackFormat) {
2275          pFormat = st_choose_matching_format(st, bindings, format, type,
2276                                              ctx->Unpack.SwapBytes);
2277
2278          if (pFormat != PIPE_FORMAT_NONE)
2279             return st_pipe_format_to_mesa_format(pFormat);
2280
2281          if (!is_renderbuffer) {
2282             /* try choosing format again, this time without render target bindings */
2283             pFormat = st_choose_matching_format(st, PIPE_BIND_SAMPLER_VIEW,
2284                                                 format, type,
2285                                                 ctx->Unpack.SwapBytes);
2286             if (pFormat != PIPE_FORMAT_NONE)
2287                return st_pipe_format_to_mesa_format(pFormat);
2288          }
2289       }
2290    }
2291
2292    pFormat = st_choose_format(st, internalFormat, format, type,
2293                               pTarget, 0, bindings, GL_TRUE);
2294
2295    if (pFormat == PIPE_FORMAT_NONE && !is_renderbuffer) {
2296       /* try choosing format again, this time without render target bindings */
2297       pFormat = st_choose_format(st, internalFormat, format, type,
2298                                  pTarget, 0, PIPE_BIND_SAMPLER_VIEW,
2299                                  GL_TRUE);
2300    }
2301
2302    if (pFormat == PIPE_FORMAT_NONE) {
2303       /* lie about using etc1/etc2 natively if we do decoding tricks */
2304       mFormat = _mesa_glenum_to_compressed_format(internalFormat);
2305       if ((mFormat == MESA_FORMAT_ETC1_RGB8 && !st->has_etc1) ||
2306           (_mesa_is_format_etc2(mFormat) && !st->has_etc2))
2307           return mFormat;
2308
2309       /* no luck at all */
2310       return MESA_FORMAT_NONE;
2311    }
2312
2313    mFormat = st_pipe_format_to_mesa_format(pFormat);
2314
2315    /* Debugging aid */
2316    if (0) {
2317       debug_printf("%s(intFormat=%s, format=%s, type=%s) -> %s, %s\n",
2318                    __func__,
2319                    _mesa_enum_to_string(internalFormat),
2320                    _mesa_enum_to_string(format),
2321                    _mesa_enum_to_string(type),
2322                    util_format_name(pFormat),
2323                    _mesa_get_format_name(mFormat));
2324    }
2325
2326    return mFormat;
2327 }
2328
2329
2330 /**
2331  * Called via ctx->Driver.QueryInternalFormat().
2332  */
2333 static size_t
2334 st_QuerySamplesForFormat(struct gl_context *ctx, GLenum target,
2335                          GLenum internalFormat, int samples[16])
2336 {
2337    struct st_context *st = st_context(ctx);
2338    enum pipe_format format;
2339    unsigned i, bind, num_sample_counts = 0;
2340
2341    (void) target;
2342
2343    if (_mesa_is_depth_or_stencil_format(internalFormat))
2344       bind = PIPE_BIND_DEPTH_STENCIL;
2345    else
2346       bind = PIPE_BIND_RENDER_TARGET;
2347
2348    /* If an sRGB framebuffer is unsupported, sRGB formats behave like linear
2349     * formats.
2350     */
2351    if (!ctx->Extensions.EXT_framebuffer_sRGB) {
2352       internalFormat = _mesa_get_linear_internalformat(internalFormat);
2353    }
2354
2355    /* Set sample counts in descending order. */
2356    for (i = 16; i > 1; i--) {
2357       format = st_choose_format(st, internalFormat, GL_NONE, GL_NONE,
2358                                 PIPE_TEXTURE_2D, i, bind, FALSE);
2359
2360       if (format != PIPE_FORMAT_NONE) {
2361          samples[num_sample_counts++] = i;
2362       }
2363    }
2364
2365    if (!num_sample_counts) {
2366       samples[num_sample_counts++] = 1;
2367    }
2368
2369    return num_sample_counts;
2370 }
2371
2372 /**
2373  * ARB_internalformat_query2 driver hook.
2374  */
2375 void
2376 st_QueryInternalFormat(struct gl_context *ctx, GLenum target,
2377                        GLenum internalFormat, GLenum pname, GLint *params)
2378 {
2379    struct st_context *st = st_context(ctx);
2380    /* The API entry-point gives us a temporary params buffer that is non-NULL
2381     * and guaranteed to have at least 16 elements.
2382     */
2383    assert(params != NULL);
2384
2385    switch (pname) {
2386    case GL_SAMPLES:
2387       st_QuerySamplesForFormat(ctx, target, internalFormat, params);
2388       break;
2389
2390    case GL_NUM_SAMPLE_COUNTS: {
2391       int samples[16];
2392       size_t num_samples;
2393       num_samples = st_QuerySamplesForFormat(ctx, target, internalFormat,
2394                                              samples);
2395       params[0] = (GLint) num_samples;
2396       break;
2397    }
2398    case GL_INTERNALFORMAT_PREFERRED: {
2399       params[0] = GL_NONE;
2400
2401       /* We need to resolve an internal format that is compatible with
2402        * the passed internal format, and optimal to the driver. By now,
2403        * we just validate that the passed internal format is supported by
2404        * the driver, and if so return the same internal format, otherwise
2405        * return GL_NONE.
2406        */
2407       uint usage;
2408       if (_mesa_is_depth_or_stencil_format(internalFormat))
2409          usage = PIPE_BIND_DEPTH_STENCIL;
2410       else
2411          usage = PIPE_BIND_RENDER_TARGET;
2412       enum pipe_format pformat = st_choose_format(st,
2413                                                   internalFormat,
2414                                                   GL_NONE,
2415                                                   GL_NONE,
2416                                                   PIPE_TEXTURE_2D, 1,
2417                                                   usage, FALSE);
2418       if (pformat)
2419          params[0] = internalFormat;
2420       break;
2421    }
2422    default:
2423       /* For the rest of the pnames, we call back the Mesa's default
2424        * function for drivers that don't implement ARB_internalformat_query2.
2425        */
2426       _mesa_query_internal_format_default(ctx, target, internalFormat, pname,
2427                                           params);
2428    }
2429 }
2430
2431 /**
2432  * This is used for translating texture border color and the clear
2433  * color.  For example, the clear color is interpreted according to
2434  * the renderbuffer's base format.  For example, if clearing a
2435  * GL_LUMINANCE buffer, we'll return colorOut[0] = colorOut[1] =
2436  * colorOut[2] = colorIn[0].
2437  * Similarly for texture border colors.
2438  */
2439 void
2440 st_translate_color(const union gl_color_union *colorIn,
2441                    union pipe_color_union *colorOut,
2442                    GLenum baseFormat, GLboolean is_integer)
2443 {
2444    if (is_integer) {
2445       const int *in = colorIn->i;
2446       int *out = colorOut->i;
2447
2448       switch (baseFormat) {
2449       case GL_RED:
2450          out[0] = in[0];
2451          out[1] = 0;
2452          out[2] = 0;
2453          out[3] = 1;
2454          break;
2455       case GL_RG:
2456          out[0] = in[0];
2457          out[1] = in[1];
2458          out[2] = 0;
2459          out[3] = 1;
2460          break;
2461       case GL_RGB:
2462          out[0] = in[0];
2463          out[1] = in[1];
2464          out[2] = in[2];
2465          out[3] = 1;
2466          break;
2467       case GL_ALPHA:
2468          out[0] = out[1] = out[2] = 0;
2469          out[3] = in[3];
2470          break;
2471       case GL_LUMINANCE:
2472          out[0] = out[1] = out[2] = in[0];
2473          out[3] = 1;
2474          break;
2475       case GL_LUMINANCE_ALPHA:
2476          out[0] = out[1] = out[2] = in[0];
2477          out[3] = in[3];
2478          break;
2479       case GL_INTENSITY:
2480          out[0] = out[1] = out[2] = out[3] = in[0];
2481          break;
2482       default:
2483          COPY_4V(out, in);
2484       }
2485    }
2486    else {
2487       const float *in = colorIn->f;
2488       float *out = colorOut->f;
2489
2490       switch (baseFormat) {
2491       case GL_RED:
2492          out[0] = in[0];
2493          out[1] = 0.0F;
2494          out[2] = 0.0F;
2495          out[3] = 1.0F;
2496          break;
2497       case GL_RG:
2498          out[0] = in[0];
2499          out[1] = in[1];
2500          out[2] = 0.0F;
2501          out[3] = 1.0F;
2502          break;
2503       case GL_RGB:
2504          out[0] = in[0];
2505          out[1] = in[1];
2506          out[2] = in[2];
2507          out[3] = 1.0F;
2508          break;
2509       case GL_ALPHA:
2510          out[0] = out[1] = out[2] = 0.0F;
2511          out[3] = in[3];
2512          break;
2513       case GL_LUMINANCE:
2514          out[0] = out[1] = out[2] = in[0];
2515          out[3] = 1.0F;
2516          break;
2517       case GL_LUMINANCE_ALPHA:
2518          out[0] = out[1] = out[2] = in[0];
2519          out[3] = in[3];
2520          break;
2521       case GL_INTENSITY:
2522          out[0] = out[1] = out[2] = out[3] = in[0];
2523          break;
2524       default:
2525          COPY_4V(out, in);
2526       }
2527    }
2528 }