src/mesa/state_tracker/st_format.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS 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/glformats.h"
  38 #include "main/texstore.h"
  39 #include "main/image.h"
  40 #include "main/macros.h"
  41 #include "main/mfeatures.h"
  42
  43 #include "pipe/p_context.h"
  44 #include "pipe/p_defines.h"
  45 #include "pipe/p_screen.h"
  46 #include "util/u_format.h"
  47 #include "st_context.h"
  48 #include "st_format.h"
  49
  50
  51 /**
  52  * Translate Mesa format to Gallium format.
  53  */
  54 enum pipe_format
  55 st_mesa_format_to_pipe_format(gl_format mesaFormat)
  56 {
  57    switch (mesaFormat) {
  58    case MESA_FORMAT_RGBA8888:
  59       return PIPE_FORMAT_A8B8G8R8_UNORM;
  60    case MESA_FORMAT_RGBA8888_REV:
  61       return PIPE_FORMAT_R8G8B8A8_UNORM;
  62    case MESA_FORMAT_ARGB8888:
  63       return PIPE_FORMAT_B8G8R8A8_UNORM;
  64    case MESA_FORMAT_ARGB8888_REV:
  65       return PIPE_FORMAT_A8R8G8B8_UNORM;
  66    case MESA_FORMAT_RGBX8888:
  67       return PIPE_FORMAT_X8B8G8R8_UNORM;
  68    case MESA_FORMAT_RGBX8888_REV:
  69       return PIPE_FORMAT_R8G8B8X8_UNORM;
  70    case MESA_FORMAT_XRGB8888:
  71       return PIPE_FORMAT_B8G8R8X8_UNORM;
  72    case MESA_FORMAT_XRGB8888_REV:
  73       return PIPE_FORMAT_X8R8G8B8_UNORM;
  74    case MESA_FORMAT_ARGB1555:
  75       return PIPE_FORMAT_B5G5R5A1_UNORM;
  76    case MESA_FORMAT_ARGB4444:
  77       return PIPE_FORMAT_B4G4R4A4_UNORM;
  78    case MESA_FORMAT_RGB565:
  79       return PIPE_FORMAT_B5G6R5_UNORM;
  80    case MESA_FORMAT_RGB332:
  81       return PIPE_FORMAT_B2G3R3_UNORM;
  82    case MESA_FORMAT_ARGB2101010:
  83       return PIPE_FORMAT_B10G10R10A2_UNORM;
  84    case MESA_FORMAT_AL44:
  85       return PIPE_FORMAT_L4A4_UNORM;
  86    case MESA_FORMAT_AL88:
  87       return PIPE_FORMAT_L8A8_UNORM;
  88    case MESA_FORMAT_AL1616:
  89       return PIPE_FORMAT_L16A16_UNORM;
  90    case MESA_FORMAT_A8:
  91       return PIPE_FORMAT_A8_UNORM;
  92    case MESA_FORMAT_A16:
  93       return PIPE_FORMAT_A16_UNORM;
  94    case MESA_FORMAT_L8:
  95       return PIPE_FORMAT_L8_UNORM;
  96    case MESA_FORMAT_L16:
  97       return PIPE_FORMAT_L16_UNORM;
  98    case MESA_FORMAT_I8:
  99       return PIPE_FORMAT_I8_UNORM;
 100    case MESA_FORMAT_I16:
 101       return PIPE_FORMAT_I16_UNORM;
 102    case MESA_FORMAT_Z16:
 103       return PIPE_FORMAT_Z16_UNORM;
 104    case MESA_FORMAT_Z32:
 105       return PIPE_FORMAT_Z32_UNORM;
 106    case MESA_FORMAT_Z24_S8:
 107       return PIPE_FORMAT_S8_UINT_Z24_UNORM;
 108    case MESA_FORMAT_S8_Z24:
 109       return PIPE_FORMAT_Z24_UNORM_S8_UINT;
 110    case MESA_FORMAT_Z24_X8:
 111       return PIPE_FORMAT_X8Z24_UNORM;
 112    case MESA_FORMAT_X8_Z24:
 113       return PIPE_FORMAT_Z24X8_UNORM;
 114    case MESA_FORMAT_S8:
 115       return PIPE_FORMAT_S8_UINT;
 116    case MESA_FORMAT_Z32_FLOAT:
 117       return PIPE_FORMAT_Z32_FLOAT;
 118    case MESA_FORMAT_Z32_FLOAT_X24S8:
 119       return PIPE_FORMAT_Z32_FLOAT_S8X24_UINT;
 120    case MESA_FORMAT_YCBCR:
 121       return PIPE_FORMAT_UYVY;
 122    case MESA_FORMAT_RGB_DXT1:
 123       return PIPE_FORMAT_DXT1_RGB;
 124    case MESA_FORMAT_RGBA_DXT1:
 125       return PIPE_FORMAT_DXT1_RGBA;
 126    case MESA_FORMAT_RGBA_DXT3:
 127       return PIPE_FORMAT_DXT3_RGBA;
 128    case MESA_FORMAT_RGBA_DXT5:
 129       return PIPE_FORMAT_DXT5_RGBA;
 130    case MESA_FORMAT_SRGB_DXT1:
 131       return PIPE_FORMAT_DXT1_SRGB;
 132    case MESA_FORMAT_SRGBA_DXT1:
 133       return PIPE_FORMAT_DXT1_SRGBA;
 134    case MESA_FORMAT_SRGBA_DXT3:
 135       return PIPE_FORMAT_DXT3_SRGBA;
 136    case MESA_FORMAT_SRGBA_DXT5:
 137       return PIPE_FORMAT_DXT5_SRGBA;
 138    case MESA_FORMAT_SLA8:
 139       return PIPE_FORMAT_L8A8_SRGB;
 140    case MESA_FORMAT_SL8:
 141       return PIPE_FORMAT_L8_SRGB;
 142    case MESA_FORMAT_SRGB8:
 143       return PIPE_FORMAT_R8G8B8_SRGB;
 144    case MESA_FORMAT_SRGBA8:
 145       return PIPE_FORMAT_A8B8G8R8_SRGB;
 146    case MESA_FORMAT_SARGB8:
 147       return PIPE_FORMAT_B8G8R8A8_SRGB;
 148    case MESA_FORMAT_RGBA_FLOAT32:
 149       return PIPE_FORMAT_R32G32B32A32_FLOAT;
 150    case MESA_FORMAT_RGBA_FLOAT16:
 151       return PIPE_FORMAT_R16G16B16A16_FLOAT;
 152    case MESA_FORMAT_RGB_FLOAT32:
 153       return PIPE_FORMAT_R32G32B32_FLOAT;
 154    case MESA_FORMAT_RGB_FLOAT16:
 155       return PIPE_FORMAT_R16G16B16_FLOAT;
 156    case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
 157       return PIPE_FORMAT_L32A32_FLOAT;
 158    case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
 159       return PIPE_FORMAT_L16A16_FLOAT;
 160    case MESA_FORMAT_LUMINANCE_FLOAT32:
 161       return PIPE_FORMAT_L32_FLOAT;
 162    case MESA_FORMAT_LUMINANCE_FLOAT16:
 163       return PIPE_FORMAT_L16_FLOAT;
 164    case MESA_FORMAT_ALPHA_FLOAT32:
 165       return PIPE_FORMAT_A32_FLOAT;
 166    case MESA_FORMAT_ALPHA_FLOAT16:
 167       return PIPE_FORMAT_A16_FLOAT;
 168    case MESA_FORMAT_INTENSITY_FLOAT32:
 169       return PIPE_FORMAT_I32_FLOAT;
 170    case MESA_FORMAT_INTENSITY_FLOAT16:
 171       return PIPE_FORMAT_I16_FLOAT;
 172    case MESA_FORMAT_R_FLOAT32:
 173       return PIPE_FORMAT_R32_FLOAT;
 174    case MESA_FORMAT_R_FLOAT16:
 175       return PIPE_FORMAT_R16_FLOAT;
 176    case MESA_FORMAT_RG_FLOAT32:
 177       return PIPE_FORMAT_R32G32_FLOAT;
 178    case MESA_FORMAT_RG_FLOAT16:
 179       return PIPE_FORMAT_R16G16_FLOAT;
 180
 181    case MESA_FORMAT_R8:
 182       return PIPE_FORMAT_R8_UNORM;
 183    case MESA_FORMAT_R16:
 184       return PIPE_FORMAT_R16_UNORM;
 185    case MESA_FORMAT_GR88:
 186       return PIPE_FORMAT_R8G8_UNORM;
 187    case MESA_FORMAT_GR1616:
 188       return PIPE_FORMAT_R16G16_UNORM;
 189    case MESA_FORMAT_RGBA_16:
 190       return PIPE_FORMAT_R16G16B16A16_UNORM;
 191
 192    /* signed int formats */
 193    case MESA_FORMAT_ALPHA_UINT8:
 194       return PIPE_FORMAT_A8_UINT;
 195    case MESA_FORMAT_ALPHA_UINT16:
 196       return PIPE_FORMAT_A16_UINT;
 197    case MESA_FORMAT_ALPHA_UINT32:
 198       return PIPE_FORMAT_A32_UINT;
 199
 200    case MESA_FORMAT_ALPHA_INT8:
 201       return PIPE_FORMAT_A8_SINT;
 202    case MESA_FORMAT_ALPHA_INT16:
 203       return PIPE_FORMAT_A16_SINT;
 204    case MESA_FORMAT_ALPHA_INT32:
 205       return PIPE_FORMAT_A32_SINT;
 206
 207    case MESA_FORMAT_INTENSITY_UINT8:
 208       return PIPE_FORMAT_I8_UINT;
 209    case MESA_FORMAT_INTENSITY_UINT16:
 210       return PIPE_FORMAT_I16_UINT;
 211    case MESA_FORMAT_INTENSITY_UINT32:
 212       return PIPE_FORMAT_I32_UINT;
 213
 214    case MESA_FORMAT_INTENSITY_INT8:
 215       return PIPE_FORMAT_I8_SINT;
 216    case MESA_FORMAT_INTENSITY_INT16:
 217       return PIPE_FORMAT_I16_SINT;
 218    case MESA_FORMAT_INTENSITY_INT32:
 219       return PIPE_FORMAT_I32_SINT;
 220
 221    case MESA_FORMAT_LUMINANCE_UINT8:
 222       return PIPE_FORMAT_L8_UINT;
 223    case MESA_FORMAT_LUMINANCE_UINT16:
 224       return PIPE_FORMAT_L16_UINT;
 225    case MESA_FORMAT_LUMINANCE_UINT32:
 226       return PIPE_FORMAT_L32_UINT;
 227
 228    case MESA_FORMAT_LUMINANCE_INT8:
 229       return PIPE_FORMAT_L8_SINT;
 230    case MESA_FORMAT_LUMINANCE_INT16:
 231       return PIPE_FORMAT_L16_SINT;
 232    case MESA_FORMAT_LUMINANCE_INT32:
 233       return PIPE_FORMAT_L32_SINT;
 234
 235    case MESA_FORMAT_LUMINANCE_ALPHA_UINT8:
 236       return PIPE_FORMAT_L8A8_UINT;
 237    case MESA_FORMAT_LUMINANCE_ALPHA_UINT16:
 238       return PIPE_FORMAT_L16A16_UINT;
 239    case MESA_FORMAT_LUMINANCE_ALPHA_UINT32:
 240       return PIPE_FORMAT_L32A32_UINT;
 241
 242    case MESA_FORMAT_LUMINANCE_ALPHA_INT8:
 243       return PIPE_FORMAT_L8A8_SINT;
 244    case MESA_FORMAT_LUMINANCE_ALPHA_INT16:
 245       return PIPE_FORMAT_L16A16_SINT;
 246    case MESA_FORMAT_LUMINANCE_ALPHA_INT32:
 247       return PIPE_FORMAT_L32A32_SINT;
 248
 249    case MESA_FORMAT_R_INT8:
 250       return PIPE_FORMAT_R8_SINT;
 251    case MESA_FORMAT_RG_INT8:
 252       return PIPE_FORMAT_R8G8_SINT;
 253    case MESA_FORMAT_RGB_INT8:
 254       return PIPE_FORMAT_R8G8B8_SINT;
 255    case MESA_FORMAT_RGBA_INT8:
 256       return PIPE_FORMAT_R8G8B8A8_SINT;
 257    case MESA_FORMAT_R_INT16:
 258       return PIPE_FORMAT_R16_SINT;
 259    case MESA_FORMAT_RG_INT16:
 260       return PIPE_FORMAT_R16G16_SINT;
 261    case MESA_FORMAT_RGB_INT16:
 262       return PIPE_FORMAT_R16G16B16_SINT;
 263    case MESA_FORMAT_RGBA_INT16:
 264       return PIPE_FORMAT_R16G16B16A16_SINT;
 265    case MESA_FORMAT_R_INT32:
 266       return PIPE_FORMAT_R32_SINT;
 267    case MESA_FORMAT_RG_INT32:
 268       return PIPE_FORMAT_R32G32_SINT;
 269    case MESA_FORMAT_RGB_INT32:
 270       return PIPE_FORMAT_R32G32B32_SINT;
 271    case MESA_FORMAT_RGBA_INT32:
 272       return PIPE_FORMAT_R32G32B32A32_SINT;
 273
 274    /* unsigned int formats */
 275    case MESA_FORMAT_R_UINT8:
 276       return PIPE_FORMAT_R8_UINT;
 277    case MESA_FORMAT_RG_UINT8:
 278       return PIPE_FORMAT_R8G8_UINT;
 279    case MESA_FORMAT_RGB_UINT8:
 280       return PIPE_FORMAT_R8G8B8_UINT;
 281    case MESA_FORMAT_RGBA_UINT8:
 282       return PIPE_FORMAT_R8G8B8A8_UINT;
 283    case MESA_FORMAT_R_UINT16:
 284       return PIPE_FORMAT_R16_UINT;
 285    case MESA_FORMAT_RG_UINT16:
 286       return PIPE_FORMAT_R16G16_UINT;
 287    case MESA_FORMAT_RGB_UINT16:
 288       return PIPE_FORMAT_R16G16B16_UINT;
 289    case MESA_FORMAT_RGBA_UINT16:
 290       return PIPE_FORMAT_R16G16B16A16_UINT;
 291    case MESA_FORMAT_R_UINT32:
 292       return PIPE_FORMAT_R32_UINT;
 293    case MESA_FORMAT_RG_UINT32:
 294       return PIPE_FORMAT_R32G32_UINT;
 295    case MESA_FORMAT_RGB_UINT32:
 296       return PIPE_FORMAT_R32G32B32_UINT;
 297    case MESA_FORMAT_RGBA_UINT32:
 298       return PIPE_FORMAT_R32G32B32A32_UINT;
 299
 300    case MESA_FORMAT_RED_RGTC1:
 301       return PIPE_FORMAT_RGTC1_UNORM;
 302    case MESA_FORMAT_SIGNED_RED_RGTC1:
 303       return PIPE_FORMAT_RGTC1_SNORM;
 304    case MESA_FORMAT_RG_RGTC2:
 305       return PIPE_FORMAT_RGTC2_UNORM;
 306    case MESA_FORMAT_SIGNED_RG_RGTC2:
 307       return PIPE_FORMAT_RGTC2_SNORM;
 308
 309    case MESA_FORMAT_L_LATC1:
 310       return PIPE_FORMAT_LATC1_UNORM;
 311    case MESA_FORMAT_SIGNED_L_LATC1:
 312       return PIPE_FORMAT_LATC1_SNORM;
 313    case MESA_FORMAT_LA_LATC2:
 314       return PIPE_FORMAT_LATC2_UNORM;
 315    case MESA_FORMAT_SIGNED_LA_LATC2:
 316       return PIPE_FORMAT_LATC2_SNORM;
 317
 318    case MESA_FORMAT_ETC1_RGB8:
 319       return PIPE_FORMAT_ETC1_RGB8;
 320
 321    /* signed normalized formats */
 322    case MESA_FORMAT_SIGNED_R8:
 323       return PIPE_FORMAT_R8_SNORM;
 324    case MESA_FORMAT_SIGNED_RG88_REV:
 325       return PIPE_FORMAT_R8G8_SNORM;
 326    case MESA_FORMAT_SIGNED_RGBA8888_REV:
 327       return PIPE_FORMAT_R8G8B8A8_SNORM;
 328
 329    case MESA_FORMAT_SIGNED_A8:
 330       return PIPE_FORMAT_A8_SNORM;
 331    case MESA_FORMAT_SIGNED_L8:
 332       return PIPE_FORMAT_L8_SNORM;
 333    case MESA_FORMAT_SIGNED_AL88:
 334       return PIPE_FORMAT_L8A8_SNORM;
 335    case MESA_FORMAT_SIGNED_I8:
 336       return PIPE_FORMAT_I8_SNORM;
 337
 338    case MESA_FORMAT_SIGNED_R16:
 339       return PIPE_FORMAT_R16_SNORM;
 340    case MESA_FORMAT_SIGNED_GR1616:
 341       return PIPE_FORMAT_R16G16_SNORM;
 342    case MESA_FORMAT_SIGNED_RGBA_16:
 343       return PIPE_FORMAT_R16G16B16A16_SNORM;
 344
 345    case MESA_FORMAT_SIGNED_A16:
 346       return PIPE_FORMAT_A16_SNORM;
 347    case MESA_FORMAT_SIGNED_L16:
 348       return PIPE_FORMAT_L16_SNORM;
 349    case MESA_FORMAT_SIGNED_AL1616:
 350       return PIPE_FORMAT_L16A16_SNORM;
 351    case MESA_FORMAT_SIGNED_I16:
 352       return PIPE_FORMAT_I16_SNORM;
 353
 354    case MESA_FORMAT_RGB9_E5_FLOAT:
 355       return PIPE_FORMAT_R9G9B9E5_FLOAT;
 356    case MESA_FORMAT_R11_G11_B10_FLOAT:
 357       return PIPE_FORMAT_R11G11B10_FLOAT;
 358    case MESA_FORMAT_ARGB2101010_UINT:
 359       return PIPE_FORMAT_B10G10R10A2_UINT;
 360
 361    case MESA_FORMAT_XRGB4444_UNORM:
 362       return PIPE_FORMAT_B4G4R4X4_UNORM;
 363    case MESA_FORMAT_XRGB1555_UNORM:
 364       return PIPE_FORMAT_B5G5R5X1_UNORM;
 365    case MESA_FORMAT_XBGR8888_SNORM:
 366       return PIPE_FORMAT_R8G8B8X8_SNORM;
 367    case MESA_FORMAT_XBGR8888_SRGB:
 368       return PIPE_FORMAT_R8G8B8X8_SRGB;
 369    case MESA_FORMAT_XBGR8888_UINT:
 370       return PIPE_FORMAT_R8G8B8X8_UINT;
 371    case MESA_FORMAT_XBGR8888_SINT:
 372       return PIPE_FORMAT_R8G8B8X8_SINT;
 373    case MESA_FORMAT_XRGB2101010_UNORM:
 374       return PIPE_FORMAT_B10G10R10X2_UNORM;
 375    case MESA_FORMAT_XBGR16161616_UNORM:
 376       return PIPE_FORMAT_R16G16B16X16_UNORM;
 377    case MESA_FORMAT_XBGR16161616_SNORM:
 378       return PIPE_FORMAT_R16G16B16X16_SNORM;
 379    case MESA_FORMAT_XBGR16161616_FLOAT:
 380       return PIPE_FORMAT_R16G16B16X16_FLOAT;
 381    case MESA_FORMAT_XBGR16161616_UINT:
 382       return PIPE_FORMAT_R16G16B16X16_UINT;
 383    case MESA_FORMAT_XBGR16161616_SINT:
 384       return PIPE_FORMAT_R16G16B16X16_SINT;
 385    case MESA_FORMAT_XBGR32323232_FLOAT:
 386       return PIPE_FORMAT_R32G32B32X32_FLOAT;
 387    case MESA_FORMAT_XBGR32323232_UINT:
 388       return PIPE_FORMAT_R32G32B32X32_UINT;
 389    case MESA_FORMAT_XBGR32323232_SINT:
 390       return PIPE_FORMAT_R32G32B32X32_SINT;
 391
 392    default:
 393       return PIPE_FORMAT_NONE;
 394    }
 395 }
 396
 397
 398 /**
 399  * Translate Gallium format to Mesa format.
 400  */
 401 gl_format
 402 st_pipe_format_to_mesa_format(enum pipe_format format)
 403 {
 404    switch (format) {
 405    case PIPE_FORMAT_A8B8G8R8_UNORM:
 406       return MESA_FORMAT_RGBA8888;
 407    case PIPE_FORMAT_R8G8B8A8_UNORM:
 408       return MESA_FORMAT_RGBA8888_REV;
 409    case PIPE_FORMAT_B8G8R8A8_UNORM:
 410       return MESA_FORMAT_ARGB8888;
 411    case PIPE_FORMAT_A8R8G8B8_UNORM:
 412       return MESA_FORMAT_ARGB8888_REV;
 413    case PIPE_FORMAT_X8B8G8R8_UNORM:
 414       return MESA_FORMAT_RGBX8888;
 415    case PIPE_FORMAT_R8G8B8X8_UNORM:
 416       return MESA_FORMAT_RGBX8888_REV;
 417    case PIPE_FORMAT_B8G8R8X8_UNORM:
 418       return MESA_FORMAT_XRGB8888;
 419    case PIPE_FORMAT_X8R8G8B8_UNORM:
 420       return MESA_FORMAT_XRGB8888_REV;
 421    case PIPE_FORMAT_B5G5R5A1_UNORM:
 422       return MESA_FORMAT_ARGB1555;
 423    case PIPE_FORMAT_B4G4R4A4_UNORM:
 424       return MESA_FORMAT_ARGB4444;
 425    case PIPE_FORMAT_B5G6R5_UNORM:
 426       return MESA_FORMAT_RGB565;
 427    case PIPE_FORMAT_B2G3R3_UNORM:
 428       return MESA_FORMAT_RGB332;
 429    case PIPE_FORMAT_B10G10R10A2_UNORM:
 430       return MESA_FORMAT_ARGB2101010;
 431    case PIPE_FORMAT_L4A4_UNORM:
 432       return MESA_FORMAT_AL44;
 433    case PIPE_FORMAT_L8A8_UNORM:
 434       return MESA_FORMAT_AL88;
 435    case PIPE_FORMAT_L16A16_UNORM:
 436       return MESA_FORMAT_AL1616;
 437    case PIPE_FORMAT_A8_UNORM:
 438       return MESA_FORMAT_A8;
 439    case PIPE_FORMAT_A16_UNORM:
 440       return MESA_FORMAT_A16;
 441    case PIPE_FORMAT_L8_UNORM:
 442       return MESA_FORMAT_L8;
 443    case PIPE_FORMAT_L16_UNORM:
 444       return MESA_FORMAT_L16;
 445    case PIPE_FORMAT_I8_UNORM:
 446       return MESA_FORMAT_I8;
 447    case PIPE_FORMAT_I16_UNORM:
 448       return MESA_FORMAT_I16;
 449    case PIPE_FORMAT_S8_UINT:
 450       return MESA_FORMAT_S8;
 451
 452    case PIPE_FORMAT_R16G16B16A16_UNORM:
 453       return MESA_FORMAT_RGBA_16;
 454
 455    case PIPE_FORMAT_Z16_UNORM:
 456       return MESA_FORMAT_Z16;
 457    case PIPE_FORMAT_Z32_UNORM:
 458       return MESA_FORMAT_Z32;
 459    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 460       return MESA_FORMAT_Z24_S8;
 461    case PIPE_FORMAT_X8Z24_UNORM:
 462       return MESA_FORMAT_Z24_X8;
 463    case PIPE_FORMAT_Z24X8_UNORM:
 464       return MESA_FORMAT_X8_Z24;
 465    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 466       return MESA_FORMAT_S8_Z24;
 467    case PIPE_FORMAT_Z32_FLOAT:
 468       return MESA_FORMAT_Z32_FLOAT;
 469    case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
 470       return MESA_FORMAT_Z32_FLOAT_X24S8;
 471
 472    case PIPE_FORMAT_UYVY:
 473       return MESA_FORMAT_YCBCR;
 474    case PIPE_FORMAT_YUYV:
 475       return MESA_FORMAT_YCBCR_REV;
 476
 477    case PIPE_FORMAT_DXT1_RGB:
 478       return MESA_FORMAT_RGB_DXT1;
 479    case PIPE_FORMAT_DXT1_RGBA:
 480       return MESA_FORMAT_RGBA_DXT1;
 481    case PIPE_FORMAT_DXT3_RGBA:
 482       return MESA_FORMAT_RGBA_DXT3;
 483    case PIPE_FORMAT_DXT5_RGBA:
 484       return MESA_FORMAT_RGBA_DXT5;
 485    case PIPE_FORMAT_DXT1_SRGB:
 486       return MESA_FORMAT_SRGB_DXT1;
 487    case PIPE_FORMAT_DXT1_SRGBA:
 488       return MESA_FORMAT_SRGBA_DXT1;
 489    case PIPE_FORMAT_DXT3_SRGBA:
 490       return MESA_FORMAT_SRGBA_DXT3;
 491    case PIPE_FORMAT_DXT5_SRGBA:
 492       return MESA_FORMAT_SRGBA_DXT5;
 493    case PIPE_FORMAT_L8A8_SRGB:
 494       return MESA_FORMAT_SLA8;
 495    case PIPE_FORMAT_L8_SRGB:
 496       return MESA_FORMAT_SL8;
 497    case PIPE_FORMAT_R8G8B8_SRGB:
 498       return MESA_FORMAT_SRGB8;
 499    case PIPE_FORMAT_A8B8G8R8_SRGB:
 500       return MESA_FORMAT_SRGBA8;
 501    case PIPE_FORMAT_B8G8R8A8_SRGB:
 502       return MESA_FORMAT_SARGB8;
 503    case PIPE_FORMAT_R32G32B32A32_FLOAT:
 504       return MESA_FORMAT_RGBA_FLOAT32;
 505    case PIPE_FORMAT_R16G16B16A16_FLOAT:
 506       return MESA_FORMAT_RGBA_FLOAT16;
 507    case PIPE_FORMAT_R32G32B32_FLOAT:
 508       return MESA_FORMAT_RGB_FLOAT32;
 509    case PIPE_FORMAT_R16G16B16_FLOAT:
 510       return MESA_FORMAT_RGB_FLOAT16;
 511    case PIPE_FORMAT_L32A32_FLOAT:
 512       return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
 513    case PIPE_FORMAT_L16A16_FLOAT:
 514       return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
 515    case PIPE_FORMAT_L32_FLOAT:
 516       return MESA_FORMAT_LUMINANCE_FLOAT32;
 517    case PIPE_FORMAT_L16_FLOAT:
 518       return MESA_FORMAT_LUMINANCE_FLOAT16;
 519    case PIPE_FORMAT_A32_FLOAT:
 520       return MESA_FORMAT_ALPHA_FLOAT32;
 521    case PIPE_FORMAT_A16_FLOAT:
 522       return MESA_FORMAT_ALPHA_FLOAT16;
 523    case PIPE_FORMAT_I32_FLOAT:
 524       return MESA_FORMAT_INTENSITY_FLOAT32;
 525    case PIPE_FORMAT_I16_FLOAT:
 526       return MESA_FORMAT_INTENSITY_FLOAT16;
 527    case PIPE_FORMAT_R32_FLOAT:
 528       return MESA_FORMAT_R_FLOAT32;
 529    case PIPE_FORMAT_R16_FLOAT:
 530       return MESA_FORMAT_R_FLOAT16;
 531    case PIPE_FORMAT_R32G32_FLOAT:
 532       return MESA_FORMAT_RG_FLOAT32;
 533    case PIPE_FORMAT_R16G16_FLOAT:
 534       return MESA_FORMAT_RG_FLOAT16;
 535
 536    case PIPE_FORMAT_R8_UNORM:
 537       return MESA_FORMAT_R8;
 538    case PIPE_FORMAT_R16_UNORM:
 539       return MESA_FORMAT_R16;
 540    case PIPE_FORMAT_R8G8_UNORM:
 541       return MESA_FORMAT_GR88;
 542    case PIPE_FORMAT_R16G16_UNORM:
 543       return MESA_FORMAT_GR1616;
 544
 545    case PIPE_FORMAT_A8_UINT:
 546       return MESA_FORMAT_ALPHA_UINT8;
 547    case PIPE_FORMAT_A16_UINT:
 548       return MESA_FORMAT_ALPHA_UINT16;
 549    case PIPE_FORMAT_A32_UINT:
 550       return MESA_FORMAT_ALPHA_UINT32;
 551    case PIPE_FORMAT_A8_SINT:
 552       return MESA_FORMAT_ALPHA_INT8;
 553    case PIPE_FORMAT_A16_SINT:
 554       return MESA_FORMAT_ALPHA_INT16;
 555    case PIPE_FORMAT_A32_SINT:
 556       return MESA_FORMAT_ALPHA_INT32;
 557
 558    case PIPE_FORMAT_I8_UINT:
 559       return MESA_FORMAT_INTENSITY_UINT8;
 560    case PIPE_FORMAT_I16_UINT:
 561       return MESA_FORMAT_INTENSITY_UINT16;
 562    case PIPE_FORMAT_I32_UINT:
 563       return MESA_FORMAT_INTENSITY_UINT32;
 564    case PIPE_FORMAT_I8_SINT:
 565       return MESA_FORMAT_INTENSITY_INT8;
 566    case PIPE_FORMAT_I16_SINT:
 567       return MESA_FORMAT_INTENSITY_INT16;
 568    case PIPE_FORMAT_I32_SINT:
 569       return MESA_FORMAT_INTENSITY_INT32;
 570
 571   case PIPE_FORMAT_L8_UINT:
 572       return MESA_FORMAT_LUMINANCE_UINT8;
 573    case PIPE_FORMAT_L16_UINT:
 574       return MESA_FORMAT_LUMINANCE_UINT16;
 575    case PIPE_FORMAT_L32_UINT:
 576       return MESA_FORMAT_LUMINANCE_UINT32;
 577    case PIPE_FORMAT_L8_SINT:
 578       return MESA_FORMAT_LUMINANCE_INT8;
 579    case PIPE_FORMAT_L16_SINT:
 580       return MESA_FORMAT_LUMINANCE_INT16;
 581    case PIPE_FORMAT_L32_SINT:
 582       return MESA_FORMAT_LUMINANCE_INT32;
 583
 584    case PIPE_FORMAT_L8A8_UINT:
 585       return MESA_FORMAT_LUMINANCE_ALPHA_UINT8;
 586    case PIPE_FORMAT_L16A16_UINT:
 587       return MESA_FORMAT_LUMINANCE_ALPHA_UINT16;
 588    case PIPE_FORMAT_L32A32_UINT:
 589       return MESA_FORMAT_LUMINANCE_ALPHA_UINT32;
 590    case PIPE_FORMAT_L8A8_SINT:
 591       return MESA_FORMAT_LUMINANCE_ALPHA_INT8;
 592    case PIPE_FORMAT_L16A16_SINT:
 593       return MESA_FORMAT_LUMINANCE_ALPHA_INT16;
 594    case PIPE_FORMAT_L32A32_SINT:
 595       return MESA_FORMAT_LUMINANCE_ALPHA_INT32;
 596
 597    case PIPE_FORMAT_R8_SINT:
 598       return MESA_FORMAT_R_INT8;
 599    case PIPE_FORMAT_R8G8_SINT:
 600       return MESA_FORMAT_RG_INT8;
 601    case PIPE_FORMAT_R8G8B8_SINT:
 602       return MESA_FORMAT_RGB_INT8;
 603    case PIPE_FORMAT_R8G8B8A8_SINT:
 604       return MESA_FORMAT_RGBA_INT8;
 605
 606    case PIPE_FORMAT_R16_SINT:
 607       return MESA_FORMAT_R_INT16;
 608    case PIPE_FORMAT_R16G16_SINT:
 609       return MESA_FORMAT_RG_INT16;
 610    case PIPE_FORMAT_R16G16B16_SINT:
 611       return MESA_FORMAT_RGB_INT16;
 612    case PIPE_FORMAT_R16G16B16A16_SINT:
 613       return MESA_FORMAT_RGBA_INT16;
 614
 615    case PIPE_FORMAT_R32_SINT:
 616       return MESA_FORMAT_R_INT32;
 617    case PIPE_FORMAT_R32G32_SINT:
 618       return MESA_FORMAT_RG_INT32;
 619    case PIPE_FORMAT_R32G32B32_SINT:
 620       return MESA_FORMAT_RGB_INT32;
 621    case PIPE_FORMAT_R32G32B32A32_SINT:
 622       return MESA_FORMAT_RGBA_INT32;
 623
 624    /* unsigned int formats */
 625    case PIPE_FORMAT_R8_UINT:
 626       return MESA_FORMAT_R_UINT8;
 627    case PIPE_FORMAT_R8G8_UINT:
 628       return MESA_FORMAT_RG_UINT8;
 629    case PIPE_FORMAT_R8G8B8_UINT:
 630       return MESA_FORMAT_RGB_UINT8;
 631    case PIPE_FORMAT_R8G8B8A8_UINT:
 632       return MESA_FORMAT_RGBA_UINT8;
 633
 634    case PIPE_FORMAT_R16_UINT:
 635       return MESA_FORMAT_R_UINT16;
 636    case PIPE_FORMAT_R16G16_UINT:
 637       return MESA_FORMAT_RG_UINT16;
 638    case PIPE_FORMAT_R16G16B16_UINT:
 639       return MESA_FORMAT_RGB_UINT16;
 640    case PIPE_FORMAT_R16G16B16A16_UINT:
 641       return MESA_FORMAT_RGBA_UINT16;
 642
 643    case PIPE_FORMAT_R32_UINT:
 644       return MESA_FORMAT_R_UINT32;
 645    case PIPE_FORMAT_R32G32_UINT:
 646       return MESA_FORMAT_RG_UINT32;
 647    case PIPE_FORMAT_R32G32B32_UINT:
 648       return MESA_FORMAT_RGB_UINT32;
 649    case PIPE_FORMAT_R32G32B32A32_UINT:
 650       return MESA_FORMAT_RGBA_UINT32;
 651
 652    case PIPE_FORMAT_RGTC1_UNORM:
 653       return MESA_FORMAT_RED_RGTC1;
 654    case PIPE_FORMAT_RGTC1_SNORM:
 655       return MESA_FORMAT_SIGNED_RED_RGTC1;
 656    case PIPE_FORMAT_RGTC2_UNORM:
 657       return MESA_FORMAT_RG_RGTC2;
 658    case PIPE_FORMAT_RGTC2_SNORM:
 659       return MESA_FORMAT_SIGNED_RG_RGTC2;
 660
 661    case PIPE_FORMAT_LATC1_UNORM:
 662       return MESA_FORMAT_L_LATC1;
 663    case PIPE_FORMAT_LATC1_SNORM:
 664       return MESA_FORMAT_SIGNED_L_LATC1;
 665    case PIPE_FORMAT_LATC2_UNORM:
 666       return MESA_FORMAT_LA_LATC2;
 667    case PIPE_FORMAT_LATC2_SNORM:
 668       return MESA_FORMAT_SIGNED_LA_LATC2;
 669
 670    case PIPE_FORMAT_ETC1_RGB8:
 671       return MESA_FORMAT_ETC1_RGB8;
 672
 673    /* signed normalized formats */
 674    case PIPE_FORMAT_R8_SNORM:
 675       return MESA_FORMAT_SIGNED_R8;
 676    case PIPE_FORMAT_R8G8_SNORM:
 677       return MESA_FORMAT_SIGNED_RG88_REV;
 678    case PIPE_FORMAT_R8G8B8A8_SNORM:
 679       return MESA_FORMAT_SIGNED_RGBA8888_REV;
 680
 681    case PIPE_FORMAT_A8_SNORM:
 682       return MESA_FORMAT_SIGNED_A8;
 683    case PIPE_FORMAT_L8_SNORM:
 684       return MESA_FORMAT_SIGNED_L8;
 685    case PIPE_FORMAT_L8A8_SNORM:
 686       return MESA_FORMAT_SIGNED_AL88;
 687    case PIPE_FORMAT_I8_SNORM:
 688       return MESA_FORMAT_SIGNED_I8;
 689
 690    case PIPE_FORMAT_R16_SNORM:
 691       return MESA_FORMAT_SIGNED_R16;
 692    case PIPE_FORMAT_R16G16_SNORM:
 693       return MESA_FORMAT_SIGNED_GR1616;
 694    case PIPE_FORMAT_R16G16B16A16_SNORM:
 695       return MESA_FORMAT_SIGNED_RGBA_16;
 696
 697    case PIPE_FORMAT_A16_SNORM:
 698       return MESA_FORMAT_SIGNED_A16;
 699    case PIPE_FORMAT_L16_SNORM:
 700       return MESA_FORMAT_SIGNED_L16;
 701    case PIPE_FORMAT_L16A16_SNORM:
 702       return MESA_FORMAT_SIGNED_AL1616;
 703    case PIPE_FORMAT_I16_SNORM:
 704       return MESA_FORMAT_SIGNED_I16;
 705
 706    case PIPE_FORMAT_R9G9B9E5_FLOAT:
 707       return MESA_FORMAT_RGB9_E5_FLOAT;
 708    case PIPE_FORMAT_R11G11B10_FLOAT:
 709       return MESA_FORMAT_R11_G11_B10_FLOAT;
 710
 711    case PIPE_FORMAT_B10G10R10A2_UINT:
 712       return MESA_FORMAT_ARGB2101010_UINT;
 713
 714    case PIPE_FORMAT_B4G4R4X4_UNORM:
 715       return MESA_FORMAT_XRGB4444_UNORM;
 716    case PIPE_FORMAT_B5G5R5X1_UNORM:
 717       return MESA_FORMAT_XRGB1555_UNORM;
 718    case PIPE_FORMAT_R8G8B8X8_SNORM:
 719       return MESA_FORMAT_XBGR8888_SNORM;
 720    case PIPE_FORMAT_R8G8B8X8_SRGB:
 721       return MESA_FORMAT_XBGR8888_SRGB;
 722    case PIPE_FORMAT_R8G8B8X8_UINT:
 723       return MESA_FORMAT_XBGR8888_UINT;
 724    case PIPE_FORMAT_R8G8B8X8_SINT:
 725       return MESA_FORMAT_XBGR8888_SINT;
 726    case PIPE_FORMAT_B10G10R10X2_UNORM:
 727       return MESA_FORMAT_XRGB2101010_UNORM;
 728    case PIPE_FORMAT_R16G16B16X16_UNORM:
 729       return MESA_FORMAT_XBGR16161616_UNORM;
 730    case PIPE_FORMAT_R16G16B16X16_SNORM:
 731       return MESA_FORMAT_XBGR16161616_SNORM;
 732    case PIPE_FORMAT_R16G16B16X16_FLOAT:
 733       return MESA_FORMAT_XBGR16161616_FLOAT;
 734    case PIPE_FORMAT_R16G16B16X16_UINT:
 735       return MESA_FORMAT_XBGR16161616_UINT;
 736    case PIPE_FORMAT_R16G16B16X16_SINT:
 737       return MESA_FORMAT_XBGR16161616_SINT;
 738    case PIPE_FORMAT_R32G32B32X32_FLOAT:
 739       return MESA_FORMAT_XBGR32323232_FLOAT;
 740    case PIPE_FORMAT_R32G32B32X32_UINT:
 741       return MESA_FORMAT_XBGR32323232_UINT;
 742    case PIPE_FORMAT_R32G32B32X32_SINT:
 743       return MESA_FORMAT_XBGR32323232_SINT;
 744
 745    default:
 746       assert(0);
 747       return MESA_FORMAT_NONE;
 748    }
 749 }
 750
 751
 752 /**
 753  * Map GL texture formats to Gallium pipe formats.
 754  */
 755 struct format_mapping
 756 {
 757    GLenum glFormats[18];       /**< list of GLenum formats, 0-terminated */
 758    enum pipe_format pipeFormats[13]; /**< list of pipe formats, 0-terminated */
 759 };
 760
 761
 762 #define DEFAULT_RGBA_FORMATS \
 763       PIPE_FORMAT_B8G8R8A8_UNORM, \
 764       PIPE_FORMAT_R8G8B8A8_UNORM, \
 765       PIPE_FORMAT_A8R8G8B8_UNORM, \
 766       PIPE_FORMAT_A8B8G8R8_UNORM, \
 767       0
 768
 769 #define DEFAULT_RGB_FORMATS \
 770       PIPE_FORMAT_B8G8R8X8_UNORM, \
 771       PIPE_FORMAT_R8G8B8X8_UNORM, \
 772       PIPE_FORMAT_X8R8G8B8_UNORM, \
 773       PIPE_FORMAT_X8B8G8R8_UNORM, \
 774       PIPE_FORMAT_B5G6R5_UNORM, \
 775       DEFAULT_RGBA_FORMATS
 776
 777 #define DEFAULT_SRGBA_FORMATS \
 778       PIPE_FORMAT_B8G8R8A8_SRGB, \
 779       PIPE_FORMAT_A8R8G8B8_SRGB, \
 780       PIPE_FORMAT_A8B8G8R8_SRGB, \
 781       0
 782
 783 #define DEFAULT_DEPTH_FORMATS \
 784       PIPE_FORMAT_Z24X8_UNORM, \
 785       PIPE_FORMAT_X8Z24_UNORM, \
 786       PIPE_FORMAT_Z16_UNORM, \
 787       PIPE_FORMAT_Z24_UNORM_S8_UINT, \
 788       PIPE_FORMAT_S8_UINT_Z24_UNORM, \
 789       0
 790
 791 #define DEFAULT_SNORM8_RGBA_FORMATS \
 792       PIPE_FORMAT_R8G8B8A8_SNORM, \
 793       0
 794
 795 #define DEFAULT_UNORM16_RGBA_FORMATS \
 796       PIPE_FORMAT_R16G16B16A16_UNORM, \
 797       DEFAULT_RGBA_FORMATS
 798
 799
 800 /**
 801  * This table maps OpenGL texture format enums to Gallium pipe_format enums.
 802  * Multiple GL enums might map to multiple pipe_formats.
 803  * The first pipe format in the list that's supported is the one that's chosen.
 804  */
 805 static const struct format_mapping format_map[] = {
 806    /* Basic RGB, RGBA formats */
 807    {
 808       { GL_RGB10, 0 },
 809       { PIPE_FORMAT_B10G10R10X2_UNORM, PIPE_FORMAT_B10G10R10A2_UNORM,
 810         DEFAULT_RGB_FORMATS }
 811    },
 812    {
 813       { GL_RGB10_A2, 0 },
 814       { PIPE_FORMAT_B10G10R10A2_UNORM, DEFAULT_RGBA_FORMATS }
 815    },
 816    {
 817       { 4, GL_RGBA, GL_RGBA8, 0 },
 818       { PIPE_FORMAT_R8G8B8A8_UNORM, DEFAULT_RGBA_FORMATS }
 819    },
 820    {
 821       { GL_BGRA, 0 },
 822       { PIPE_FORMAT_B8G8R8A8_UNORM, DEFAULT_RGBA_FORMATS }
 823    },
 824    {
 825       { 3, GL_RGB, GL_RGB8, 0 },
 826       { DEFAULT_RGB_FORMATS }
 827    },
 828    {
 829       { GL_RGB12, GL_RGB16, 0 },
 830       { PIPE_FORMAT_R16G16B16X16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
 831         DEFAULT_RGB_FORMATS }
 832    },
 833    {
 834       { GL_RGBA12, GL_RGBA16, 0 },
 835       { PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGBA_FORMATS }
 836    },
 837    {
 838       { GL_RGBA4, GL_RGBA2, 0 },
 839       { PIPE_FORMAT_B4G4R4A4_UNORM, DEFAULT_RGBA_FORMATS }
 840    },
 841    {
 842       { GL_RGB5_A1, 0 },
 843       { PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }
 844    },
 845    {
 846       { GL_R3_G3_B2, 0 },
 847       { PIPE_FORMAT_B2G3R3_UNORM, PIPE_FORMAT_B5G6R5_UNORM,
 848         PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGB_FORMATS }
 849    },
 850    {
 851       { GL_RGB4 },
 852       { PIPE_FORMAT_B4G4R4X4_UNORM, PIPE_FORMAT_B4G4R4A4_UNORM,
 853         DEFAULT_RGB_FORMATS }
 854    },
 855    {
 856       { GL_RGB5 },
 857       { PIPE_FORMAT_B5G5R5X1_UNORM, PIPE_FORMAT_B5G5R5A1_UNORM,
 858         DEFAULT_RGB_FORMATS }
 859    },
 860    {
 861       { GL_RGB565 },
 862       { PIPE_FORMAT_B5G6R5_UNORM, DEFAULT_RGB_FORMATS }
 863    },
 864
 865    /* basic Alpha formats */
 866    {
 867       { GL_ALPHA12, GL_ALPHA16, 0 },
 868       { PIPE_FORMAT_A16_UNORM, PIPE_FORMAT_A8_UNORM,
 869         DEFAULT_RGBA_FORMATS }
 870    },
 871    {
 872       { GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_COMPRESSED_ALPHA, 0 },
 873       { PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
 874    },
 875
 876    /* basic Luminance formats */
 877    {
 878       { GL_LUMINANCE12, GL_LUMINANCE16, 0 },
 879       { PIPE_FORMAT_L16_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
 880    },
 881    {
 882       { 1, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8, 0 },
 883       { PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
 884    },
 885
 886    /* basic Luminance/Alpha formats */
 887    {
 888       { GL_LUMINANCE12_ALPHA4, GL_LUMINANCE12_ALPHA12,
 889         GL_LUMINANCE16_ALPHA16, 0},
 890       { PIPE_FORMAT_L16A16_UNORM, PIPE_FORMAT_L8A8_UNORM,
 891         DEFAULT_RGBA_FORMATS }
 892    },
 893    {
 894       { 2, GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, GL_LUMINANCE8_ALPHA8, 0 },
 895       { PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
 896    },
 897    {
 898       { GL_LUMINANCE4_ALPHA4, 0 },
 899       { PIPE_FORMAT_L4A4_UNORM, PIPE_FORMAT_L8A8_UNORM,
 900         DEFAULT_RGBA_FORMATS }
 901    },
 902
 903    /* basic Intensity formats */
 904    {
 905       { GL_INTENSITY12, GL_INTENSITY16, 0 },
 906       { PIPE_FORMAT_I16_UNORM, PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
 907    },
 908    {
 909       { GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8,
 910         GL_COMPRESSED_INTENSITY, 0 },
 911       { PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
 912    },
 913
 914    /* YCbCr */
 915    {
 916       { GL_YCBCR_MESA, 0 },
 917       { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV, 0 }
 918    },
 919
 920    /* compressed formats */ /* XXX PIPE_BIND_SAMPLER_VIEW only */
 921    {
 922       { GL_COMPRESSED_RGB, 0 },
 923       { PIPE_FORMAT_DXT1_RGB, DEFAULT_RGB_FORMATS }
 924    },
 925    {
 926       { GL_COMPRESSED_RGBA, 0 },
 927       { PIPE_FORMAT_DXT5_RGBA, DEFAULT_RGBA_FORMATS }
 928    },
 929    {
 930       { GL_RGB_S3TC, GL_RGB4_S3TC, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0 },
 931       { PIPE_FORMAT_DXT1_RGB, 0 }
 932    },
 933    {
 934       { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0 },
 935       { PIPE_FORMAT_DXT1_RGBA, 0 }
 936    },
 937    {
 938       { GL_RGBA_S3TC, GL_RGBA4_S3TC, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0 },
 939       { PIPE_FORMAT_DXT3_RGBA, 0 }
 940    },
 941    {
 942       { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0 },
 943       { PIPE_FORMAT_DXT5_RGBA, 0 }
 944    },
 945
 946 #if 0
 947    {
 948       { GL_COMPRESSED_RGB_FXT1_3DFX, 0 },
 949       { PIPE_FORMAT_RGB_FXT1, 0 }
 950    },
 951    {
 952       { GL_COMPRESSED_RGBA_FXT1_3DFX, 0 },
 953       { PIPE_FORMAT_RGBA_FXT1, 0 }
 954    },
 955 #endif
 956
 957    /* Depth formats */
 958    {
 959       { GL_DEPTH_COMPONENT16, 0 },
 960       { PIPE_FORMAT_Z16_UNORM, DEFAULT_DEPTH_FORMATS }
 961    },
 962    {
 963       { GL_DEPTH_COMPONENT24, 0 },
 964       { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
 965         DEFAULT_DEPTH_FORMATS }
 966    },
 967    {
 968       { GL_DEPTH_COMPONENT32, 0 },
 969       { PIPE_FORMAT_Z32_UNORM, DEFAULT_DEPTH_FORMATS }
 970    },
 971    {
 972       { GL_DEPTH_COMPONENT, 0 },
 973       { DEFAULT_DEPTH_FORMATS }
 974    },
 975    {
 976       { GL_DEPTH_COMPONENT32F, 0 },
 977       { PIPE_FORMAT_Z32_FLOAT, 0 }
 978    },
 979
 980    /* stencil formats */
 981    {
 982       { GL_STENCIL_INDEX, GL_STENCIL_INDEX1_EXT, GL_STENCIL_INDEX4_EXT,
 983         GL_STENCIL_INDEX8_EXT, GL_STENCIL_INDEX16_EXT, 0 },
 984       {
 985          PIPE_FORMAT_S8_UINT, PIPE_FORMAT_Z24_UNORM_S8_UINT,
 986          PIPE_FORMAT_S8_UINT_Z24_UNORM, 0
 987       }
 988    },
 989
 990    /* Depth / Stencil formats */
 991    {
 992       { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 },
 993       { PIPE_FORMAT_Z24_UNORM_S8_UINT, PIPE_FORMAT_S8_UINT_Z24_UNORM, 0 }
 994    },
 995    {
 996       { GL_DEPTH32F_STENCIL8, 0 },
 997       { PIPE_FORMAT_Z32_FLOAT_S8X24_UINT, 0 }
 998    },
 999
1000    /* sRGB formats */
1001    {
1002       { GL_SRGB_EXT, GL_SRGB8_EXT, 0 },
1003       { PIPE_FORMAT_R8G8B8X8_SRGB, DEFAULT_SRGBA_FORMATS }
1004    },
1005    {
1006       { GL_SRGB_ALPHA_EXT, GL_SRGB8_ALPHA8_EXT, 0 },
1007       { DEFAULT_SRGBA_FORMATS }
1008    },
1009    {
1010       { GL_COMPRESSED_SRGB_EXT, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 0 },
1011       { PIPE_FORMAT_DXT1_SRGB, PIPE_FORMAT_R8G8B8X8_SRGB,
1012         DEFAULT_SRGBA_FORMATS }
1013    },
1014    {
1015       { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 0 },
1016       { PIPE_FORMAT_DXT1_SRGBA, 0 }
1017    },
1018    {
1019       { GL_COMPRESSED_SRGB_ALPHA_EXT,
1020         GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 0 },
1021       { PIPE_FORMAT_DXT3_SRGBA, DEFAULT_SRGBA_FORMATS }
1022    },
1023    {
1024       { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 0 },
1025       { PIPE_FORMAT_DXT5_SRGBA, 0 }
1026    },
1027    {
1028       { GL_SLUMINANCE_ALPHA_EXT, GL_SLUMINANCE8_ALPHA8_EXT,
1029         GL_COMPRESSED_SLUMINANCE_ALPHA_EXT, 0 },
1030       { PIPE_FORMAT_L8A8_SRGB, DEFAULT_SRGBA_FORMATS }
1031    },
1032    {
1033       { GL_SLUMINANCE_EXT, GL_SLUMINANCE8_EXT, GL_COMPRESSED_SLUMINANCE_EXT,
1034         0 },
1035       { PIPE_FORMAT_L8_SRGB, DEFAULT_SRGBA_FORMATS }
1036    },
1037
1038    /* 16-bit float formats */
1039    {
1040       { GL_RGBA16F_ARB, 0 },
1041       { PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1042    },
1043    {
1044       { GL_RGB16F_ARB, 0 },
1045       { PIPE_FORMAT_R16G16B16_FLOAT, PIPE_FORMAT_R16G16B16X16_FLOAT,
1046         PIPE_FORMAT_R16G16B16A16_FLOAT,
1047         PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1048    },
1049    {
1050       { GL_LUMINANCE_ALPHA16F_ARB, 0 },
1051       { PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1052         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1053    },
1054    {
1055       { GL_ALPHA16F_ARB, 0 },
1056       { PIPE_FORMAT_A16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1057         PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1058         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1059    },
1060    {
1061       { GL_INTENSITY16F_ARB, 0 },
1062       { PIPE_FORMAT_I16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1063         PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1064         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1065    },
1066    {
1067       { GL_LUMINANCE16F_ARB, 0 },
1068       { PIPE_FORMAT_L16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1069         PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1070         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1071    },
1072    {
1073       { GL_R16F, 0 },
1074       { PIPE_FORMAT_R16_FLOAT, PIPE_FORMAT_R16G16_FLOAT,
1075         PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1076         PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1077    },
1078    {
1079       { GL_RG16F, 0 },
1080       { PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1081         PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1082    },
1083
1084    /* 32-bit float formats */
1085    {
1086       { GL_RGBA32F_ARB, 0 },
1087       { PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1088    },
1089    {
1090       { GL_RGB32F_ARB, 0 },
1091       { PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32X32_FLOAT,
1092         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1093    },
1094    {
1095       { GL_LUMINANCE_ALPHA32F_ARB, 0 },
1096       { PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1097         PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1098    },
1099    {
1100       { GL_ALPHA32F_ARB, 0 },
1101       { PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1102         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_A16_FLOAT,
1103         PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1104    },
1105    {
1106       { GL_INTENSITY32F_ARB, 0 },
1107       { PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1108         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_I16_FLOAT,
1109         PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1110    },
1111    {
1112       { GL_LUMINANCE32F_ARB, 0 },
1113       { PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1114         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_L16_FLOAT,
1115         PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1116    },
1117    {
1118       { GL_R32F, 0 },
1119       { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT,
1120         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16_FLOAT,
1121         PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1122    },
1123    {
1124       { GL_RG32F, 0 },
1125       { PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1126         PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1127    },
1128
1129    /* R, RG formats */
1130    {
1131       { GL_RED, GL_R8, 0 },
1132       { PIPE_FORMAT_R8_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1133    },
1134    {
1135       { GL_RG, GL_RG8, 0 },
1136       { PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1137    },
1138    {
1139       { GL_R16, 0 },
1140       { PIPE_FORMAT_R16_UNORM, PIPE_FORMAT_R16G16_UNORM,
1141         DEFAULT_UNORM16_RGBA_FORMATS }
1142    },
1143    {
1144       { GL_RG16, 0 },
1145       { PIPE_FORMAT_R16G16_UNORM, DEFAULT_UNORM16_RGBA_FORMATS }
1146    },
1147
1148    /* compressed R, RG formats */
1149    {
1150       { GL_COMPRESSED_RED, GL_COMPRESSED_RED_RGTC1, 0 },
1151       { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_R8_UNORM, DEFAULT_RGBA_FORMATS }
1152    },
1153    {
1154       { GL_COMPRESSED_SIGNED_RED_RGTC1, 0 },
1155       { PIPE_FORMAT_RGTC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1156    },
1157    {
1158       { GL_COMPRESSED_RG, GL_COMPRESSED_RG_RGTC2, 0 },
1159       { PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1160    },
1161    {
1162       { GL_COMPRESSED_SIGNED_RG_RGTC2, 0 },
1163       { PIPE_FORMAT_RGTC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1164    },
1165    {
1166       { GL_COMPRESSED_LUMINANCE, GL_COMPRESSED_LUMINANCE_LATC1_EXT, 0 },
1167       { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGBA_FORMATS }
1168    },
1169    {
1170       { GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT, 0 },
1171       { PIPE_FORMAT_LATC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1172    },
1173    {
1174       { GL_COMPRESSED_LUMINANCE_ALPHA, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT,
1175         GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI, 0 },
1176       { PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
1177    },
1178    {
1179       { GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT, 0 },
1180       { PIPE_FORMAT_LATC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1181    },
1182
1183    /* ETC1 */
1184    {
1185       { GL_ETC1_RGB8_OES, 0 },
1186       { PIPE_FORMAT_ETC1_RGB8, 0 }
1187    },
1188
1189    /* signed/unsigned integer formats.
1190     */
1191    {
1192       { GL_RGBA_INTEGER_EXT,
1193         GL_BGRA_INTEGER_EXT,
1194         GL_RGBA8I_EXT, 0 },
1195       { PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1196    },
1197    {
1198       { GL_RGB_INTEGER_EXT,
1199         GL_BGR_INTEGER_EXT,
1200         GL_RGB8I_EXT,
1201         GL_BLUE_INTEGER_EXT, 0 },
1202       { PIPE_FORMAT_R8G8B8_SINT, PIPE_FORMAT_R8G8B8X8_SINT,
1203         PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1204    },
1205    {
1206       { GL_ALPHA_INTEGER_EXT,
1207         GL_ALPHA8I_EXT, 0 },
1208       { PIPE_FORMAT_A8_SINT, 0 }
1209    },
1210    {
1211       { GL_ALPHA16I_EXT, 0 },
1212       { PIPE_FORMAT_A16_SINT, 0 }
1213    },
1214    {
1215       { GL_ALPHA32I_EXT, 0 },
1216       { PIPE_FORMAT_A32_SINT, 0 }
1217    },
1218    {
1219       { GL_ALPHA8UI_EXT, 0 },
1220       { PIPE_FORMAT_A8_UINT, 0 }
1221    },
1222    {
1223       { GL_ALPHA16UI_EXT, 0 },
1224       { PIPE_FORMAT_A16_UINT, 0 }
1225    },
1226    {
1227       { GL_ALPHA32UI_EXT, 0 },
1228       { PIPE_FORMAT_A32_UINT, 0 }
1229    },
1230    {
1231       { GL_INTENSITY8I_EXT, 0 },
1232       { PIPE_FORMAT_I8_SINT, 0 }
1233    },
1234    {
1235       { GL_INTENSITY16I_EXT, 0 },
1236       { PIPE_FORMAT_I16_SINT, 0 }
1237    },
1238    {
1239       { GL_INTENSITY32I_EXT, 0 },
1240       { PIPE_FORMAT_I32_SINT, 0 }
1241    },
1242    {
1243       { GL_INTENSITY8UI_EXT, 0 },
1244       { PIPE_FORMAT_I8_UINT, 0 }
1245    },
1246    {
1247       { GL_INTENSITY16UI_EXT, 0 },
1248       { PIPE_FORMAT_I16_UINT, 0 }
1249    },
1250    {
1251       { GL_INTENSITY32UI_EXT, 0 },
1252       { PIPE_FORMAT_I32_UINT, 0 }
1253    },
1254    {
1255       { GL_LUMINANCE8I_EXT, 0 },
1256       { PIPE_FORMAT_L8_SINT, 0 }
1257    },
1258    {
1259       { GL_LUMINANCE16I_EXT, 0 },
1260       { PIPE_FORMAT_L16_SINT, 0 }
1261    },
1262    {
1263       { GL_LUMINANCE32I_EXT, 0 },
1264       { PIPE_FORMAT_L32_SINT, 0 }
1265    },
1266    {
1267       { GL_LUMINANCE_INTEGER_EXT,
1268         GL_LUMINANCE8UI_EXT, 0 },
1269       { PIPE_FORMAT_L8_UINT, 0 }
1270    },
1271    {
1272       { GL_LUMINANCE16UI_EXT, 0 },
1273       { PIPE_FORMAT_L16_UINT, 0 }
1274    },
1275    {
1276       { GL_LUMINANCE32UI_EXT, 0 },
1277       { PIPE_FORMAT_L32_UINT, 0 }
1278    },
1279    {
1280       { GL_LUMINANCE_ALPHA_INTEGER_EXT,
1281         GL_LUMINANCE_ALPHA8I_EXT, 0 },
1282       { PIPE_FORMAT_L8A8_SINT, 0 }
1283    },
1284    {
1285       { GL_LUMINANCE_ALPHA16I_EXT, 0 },
1286       { PIPE_FORMAT_L16A16_SINT, 0 }
1287    },
1288    {
1289       { GL_LUMINANCE_ALPHA32I_EXT, 0 },
1290       { PIPE_FORMAT_L32A32_SINT, 0 }
1291    },
1292    {
1293       { GL_LUMINANCE_ALPHA8UI_EXT, 0 },
1294       { PIPE_FORMAT_L8A8_UINT, 0 }
1295    },
1296    {
1297       { GL_LUMINANCE_ALPHA16UI_EXT, 0 },
1298       { PIPE_FORMAT_L16A16_UINT, 0 }
1299    },
1300    {
1301       { GL_LUMINANCE_ALPHA32UI_EXT, 0 },
1302       { PIPE_FORMAT_L32A32_UINT, 0 }
1303    },
1304    {
1305       { GL_RGB16I_EXT, 0 },
1306       { PIPE_FORMAT_R16G16B16_SINT, PIPE_FORMAT_R16G16B16X16_SINT,
1307         PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1308    },
1309    {
1310       { GL_RGBA16I_EXT, 0 },
1311       { PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1312    },
1313    {
1314       { GL_RGB32I_EXT, 0 },
1315       { PIPE_FORMAT_R32G32B32_SINT, PIPE_FORMAT_R32G32B32X32_SINT,
1316         PIPE_FORMAT_R32G32B32A32_SINT, 0 },
1317    },
1318    {
1319       { GL_RGBA32I_EXT, 0 },
1320       { PIPE_FORMAT_R32G32B32A32_SINT, 0 }
1321    },
1322    {
1323       { GL_RGBA8UI_EXT, 0 },
1324       { PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1325    },
1326    {
1327       { GL_RGB8UI_EXT, 0 },
1328       { PIPE_FORMAT_R8G8B8_UINT, PIPE_FORMAT_R8G8B8X8_UINT,
1329         PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1330    },
1331    {
1332       { GL_RGB16UI_EXT, 0 },
1333       { PIPE_FORMAT_R16G16B16_UINT, PIPE_FORMAT_R16G16B16X16_UINT,
1334         PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1335    },
1336    {
1337       { GL_RGBA16UI_EXT, 0 },
1338       { PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1339    },
1340    {
1341       { GL_RGB32UI_EXT, 0},
1342       { PIPE_FORMAT_R32G32B32_UINT, PIPE_FORMAT_R32G32B32X32_UINT,
1343         PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1344    },
1345    {
1346       { GL_RGBA32UI_EXT, 0},
1347       { PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1348    },
1349    {
1350      { GL_R8I, GL_RED_INTEGER_EXT, 0},
1351      { PIPE_FORMAT_R8_SINT, 0},
1352    },
1353    {
1354      { GL_R16I, 0},
1355      { PIPE_FORMAT_R16_SINT, 0},
1356    },
1357    {
1358      { GL_R32I, 0},
1359      { PIPE_FORMAT_R32_SINT, 0},
1360    },
1361   {
1362      { GL_R8UI, 0},
1363      { PIPE_FORMAT_R8_UINT, 0},
1364    },
1365    {
1366      { GL_R16UI, 0},
1367      { PIPE_FORMAT_R16_UINT, 0},
1368    },
1369    {
1370      { GL_R32UI, 0},
1371      { PIPE_FORMAT_R32_UINT, 0},
1372    },
1373    {
1374      { GL_RG8I, GL_GREEN_INTEGER_EXT, 0},
1375      { PIPE_FORMAT_R8G8_SINT, 0},
1376    },
1377    {
1378      { GL_RG16I, 0},
1379      { PIPE_FORMAT_R16G16_SINT, 0},
1380    },
1381    {
1382      { GL_RG32I, 0},
1383      { PIPE_FORMAT_R32G32_SINT, 0},
1384    },
1385   {
1386      { GL_RG8UI, 0},
1387      { PIPE_FORMAT_R8G8_UINT, 0},
1388    },
1389    {
1390      { GL_RG16UI, 0},
1391      { PIPE_FORMAT_R16G16_UINT, 0},
1392    },
1393    {
1394      { GL_RG32UI, 0},
1395      { PIPE_FORMAT_R32G32_UINT, 0},
1396    },
1397    /* signed normalized formats */
1398    {
1399       { GL_RED_SNORM, GL_R8_SNORM, 0 },
1400       { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM,
1401         PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1402    },
1403    {
1404       { GL_R16_SNORM, 0 },
1405       { PIPE_FORMAT_R16_SNORM,
1406         PIPE_FORMAT_R16G16_SNORM,
1407         PIPE_FORMAT_R16G16B16A16_SNORM,
1408         PIPE_FORMAT_R8_SNORM,
1409         PIPE_FORMAT_R8G8_SNORM,
1410         PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1411    },
1412    {
1413       { GL_RG_SNORM, GL_RG8_SNORM, 0 },
1414       { PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1415    },
1416    {
1417       { GL_RG16_SNORM, 0 },
1418       { PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1419         PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1420    },
1421    {
1422       { GL_RGB_SNORM, GL_RGB8_SNORM, 0 },
1423       { PIPE_FORMAT_R8G8B8X8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1424    },
1425    {
1426       { GL_RGBA_SNORM, GL_RGBA8_SNORM, 0 },
1427       { PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1428    },
1429    {
1430       { GL_RGB16_SNORM, 0 },
1431       { PIPE_FORMAT_R16G16B16X16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1432         PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1433    },
1434    {
1435       { GL_RGBA16_SNORM, 0 },
1436       { PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1437    },
1438    {
1439       { GL_ALPHA_SNORM, GL_ALPHA8_SNORM, 0 },
1440       { PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1441    },
1442    {
1443       { GL_ALPHA16_SNORM, 0 },
1444       { PIPE_FORMAT_A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1445         PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1446    },
1447    {
1448       { GL_LUMINANCE_SNORM, GL_LUMINANCE8_SNORM, 0 },
1449       { PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1450    },
1451    {
1452       { GL_LUMINANCE16_SNORM, 0 },
1453       { PIPE_FORMAT_L16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1454         PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1455    },
1456    {
1457       { GL_LUMINANCE_ALPHA_SNORM, GL_LUMINANCE8_ALPHA8_SNORM, 0 },
1458       { PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1459    },
1460    {
1461       { GL_LUMINANCE16_ALPHA16_SNORM, 0 },
1462       { PIPE_FORMAT_L16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1463         PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1464    },
1465    {
1466       { GL_INTENSITY_SNORM, GL_INTENSITY8_SNORM, 0 },
1467       { PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1468    },
1469    {
1470       { GL_INTENSITY16_SNORM, 0 },
1471       { PIPE_FORMAT_I16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1472         PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1473    },
1474    {
1475       { GL_RGB9_E5, 0 },
1476       { PIPE_FORMAT_R9G9B9E5_FLOAT, 0 }
1477    },
1478    {
1479       { GL_R11F_G11F_B10F, 0 },
1480       { PIPE_FORMAT_R11G11B10_FLOAT, 0 }
1481    },
1482    {
1483       { GL_RGB10_A2UI, 0 },
1484       { PIPE_FORMAT_B10G10R10A2_UINT, 0 }
1485    },
1486 };
1487
1488
1489 /**
1490  * Return first supported format from the given list.
1491  * \param allow_dxt  indicates whether it's OK to return a DXT format.
1492  */
1493 static enum pipe_format
1494 find_supported_format(struct pipe_screen *screen,
1495                       const enum pipe_format formats[],
1496                       enum pipe_texture_target target,
1497                       unsigned sample_count,
1498                       unsigned tex_usage,
1499                       boolean allow_dxt)
1500 {
1501    uint i;
1502    for (i = 0; formats[i]; i++) {
1503       if (screen->is_format_supported(screen, formats[i], target,
1504                                       sample_count, tex_usage)) {
1505          if (!allow_dxt && util_format_is_s3tc(formats[i])) {
1506             /* we can't return a dxt format, continue searching */
1507             continue;
1508          }
1509
1510          return formats[i];
1511       }
1512    }
1513    return PIPE_FORMAT_NONE;
1514 }
1515
1516 struct exact_format_mapping
1517 {
1518    GLenum format;
1519    GLenum type;
1520    enum pipe_format pformat;
1521 };
1522
1523 static const struct exact_format_mapping rgba8888_tbl[] =
1524 {
1525    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_A8B8G8R8_UNORM },
1526    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_A8B8G8R8_UNORM },
1527    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_R8G8B8A8_UNORM },
1528    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_R8G8B8A8_UNORM },
1529    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_A8R8G8B8_UNORM },
1530    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_B8G8R8A8_UNORM },
1531    { GL_RGBA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_R8G8B8A8_UNORM },
1532    { GL_ABGR_EXT, GL_UNSIGNED_BYTE,               PIPE_FORMAT_A8B8G8R8_UNORM },
1533    { GL_BGRA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_B8G8R8A8_UNORM },
1534    { 0,           0,                              0                          }
1535 };
1536
1537 static const struct exact_format_mapping rgbx8888_tbl[] =
1538 {
1539    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_X8R8G8B8_UNORM },
1540    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_B8G8R8X8_UNORM },
1541    { GL_BGRA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_B8G8R8X8_UNORM },
1542    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_X8B8G8R8_UNORM },
1543    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_X8B8G8R8_UNORM },
1544    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_R8G8B8X8_UNORM },
1545    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_R8G8B8X8_UNORM },
1546    { GL_RGBA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_R8G8B8X8_UNORM },
1547    { GL_ABGR_EXT, GL_UNSIGNED_BYTE,               PIPE_FORMAT_X8B8G8R8_UNORM },
1548    { 0,           0,                              0                          }
1549 };
1550
1551 static const struct exact_format_mapping rgba1010102_tbl[] =
1552 {
1553    { GL_BGRA,     GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_B10G10R10A2_UNORM },
1554    /* No Mesa formats for these Gallium formats:
1555    { GL_RGBA,     GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_R10G10B10A2_UNORM },
1556    { GL_ABGR_EXT, GL_UNSIGNED_INT_10_10_10_2,     PIPE_FORMAT_R10G10B10A2_UNORM },
1557    { GL_ABGR_EXT, GL_UNSIGNED_INT,                PIPE_FORMAT_R10G10B10A2_UNORM },
1558    */
1559    { 0,           0,                              0                             }
1560 };
1561
1562 /**
1563  * If there is an exact pipe_format match for {internalFormat, format, type}
1564  * return that, otherwise return PIPE_FORMAT_NONE so we can do fuzzy matching.
1565  */
1566 static enum pipe_format
1567 find_exact_format(GLint internalFormat, GLenum format, GLenum type)
1568 {
1569    uint i;
1570    const struct exact_format_mapping* tbl;
1571
1572    if (format == GL_NONE || type == GL_NONE)
1573       return PIPE_FORMAT_NONE;
1574
1575    switch (internalFormat) {
1576    case 4:
1577    case GL_RGBA:
1578    case GL_RGBA8:
1579       tbl = rgba8888_tbl;
1580       break;
1581    case 3:
1582    case GL_RGB:
1583    case GL_RGB8:
1584       tbl = rgbx8888_tbl;
1585       break;
1586    case GL_RGB10_A2:
1587       tbl = rgba1010102_tbl;
1588       break;
1589    default:
1590       return PIPE_FORMAT_NONE;
1591    }
1592
1593    for (i = 0; tbl[i].format; i++)
1594       if (tbl[i].format == format && tbl[i].type == type)
1595          return tbl[i].pformat;
1596
1597    return PIPE_FORMAT_NONE;
1598 }
1599
1600 /**
1601  * Given an OpenGL internalFormat value for a texture or surface, return
1602  * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
1603  * This is called during glTexImage2D, for example.
1604  *
1605  * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus
1606  * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if
1607  * we want render-to-texture ability.
1608  *
1609  * \param internalFormat  the user value passed to glTexImage2D
1610  * \param target  one of PIPE_TEXTURE_x
1611  * \param bindings  bitmask of PIPE_BIND_x flags.
1612  * \param allow_dxt  indicates whether it's OK to return a DXT format.  This
1613  *                   only matters when internalFormat names a generic or
1614  *                   specific compressed format.  And that should only happen
1615  *                   when we're getting called from gl[Copy]TexImage().
1616  */
1617 enum pipe_format
1618 st_choose_format(struct st_context *st, GLenum internalFormat,
1619                  GLenum format, GLenum type,
1620                  enum pipe_texture_target target, unsigned sample_count,
1621                  unsigned bindings, boolean allow_dxt)
1622 {
1623    struct pipe_screen *screen = st->pipe->screen;
1624    int i, j;
1625    enum pipe_format pf;
1626
1627    /* can't render to compressed formats at this time */
1628    if (_mesa_is_compressed_format(st->ctx, internalFormat)
1629        && (bindings & ~PIPE_BIND_SAMPLER_VIEW)) {
1630       return PIPE_FORMAT_NONE;
1631    }
1632
1633    /* search for exact matches */
1634    pf = find_exact_format(internalFormat, format, type);
1635    if (pf != PIPE_FORMAT_NONE &&
1636        screen->is_format_supported(screen, pf,
1637                                    target, sample_count, bindings))
1638       return pf;
1639
1640    /* search table for internalFormat */
1641    for (i = 0; i < Elements(format_map); i++) {
1642       const struct format_mapping *mapping = &format_map[i];
1643       for (j = 0; mapping->glFormats[j]; j++) {
1644          if (mapping->glFormats[j] == internalFormat) {
1645             /* Found the desired internal format.  Find first pipe format
1646              * which is supported by the driver.
1647              */
1648             return find_supported_format(screen, mapping->pipeFormats,
1649                                          target, sample_count, bindings,
1650                                          allow_dxt);
1651          }
1652       }
1653    }
1654
1655    _mesa_problem(NULL, "unhandled format!\n");
1656    return PIPE_FORMAT_NONE;
1657 }
1658
1659
1660 /**
1661  * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
1662  */
1663 enum pipe_format
1664 st_choose_renderbuffer_format(struct st_context *st,
1665                               GLenum internalFormat, unsigned sample_count)
1666 {
1667    uint usage;
1668    if (_mesa_is_depth_or_stencil_format(internalFormat))
1669       usage = PIPE_BIND_DEPTH_STENCIL;
1670    else
1671       usage = PIPE_BIND_RENDER_TARGET;
1672    return st_choose_format(st, internalFormat, GL_NONE, GL_NONE,
1673                            PIPE_TEXTURE_2D, sample_count, usage, FALSE);
1674 }
1675
1676
1677 /**
1678  * Called via ctx->Driver.ChooseTextureFormat().
1679  */
1680 gl_format
1681 st_ChooseTextureFormat(struct gl_context *ctx, GLenum target,
1682                        GLint internalFormat,
1683                        GLenum format, GLenum type)
1684 {
1685    const boolean want_renderable =
1686       internalFormat == 3 || internalFormat == 4 ||
1687       internalFormat == GL_RGB || internalFormat == GL_RGBA ||
1688       internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||
1689       internalFormat == GL_BGRA;
1690    struct st_context *st = st_context(ctx);
1691    enum pipe_format pFormat;
1692    unsigned bindings;
1693
1694    if (target == GL_TEXTURE_1D || target == GL_TEXTURE_1D_ARRAY) {
1695       /* We don't do compression for these texture targets because of
1696        * difficulty with sub-texture updates on non-block boundaries, etc.
1697        * So change the internal format request to an uncompressed format.
1698        */
1699       internalFormat =
1700         _mesa_generic_compressed_format_to_uncompressed_format(internalFormat);
1701    }
1702
1703    /* GL textures may wind up being render targets, but we don't know
1704     * that in advance.  Specify potential render target flags now.
1705     */
1706    bindings = PIPE_BIND_SAMPLER_VIEW;
1707    if (want_renderable) {
1708       if (_mesa_is_depth_or_stencil_format(internalFormat))
1709          bindings |= PIPE_BIND_DEPTH_STENCIL;
1710       else
1711          bindings |= PIPE_BIND_RENDER_TARGET;
1712    }
1713
1714    pFormat = st_choose_format(st, internalFormat, format, type,
1715                               PIPE_TEXTURE_2D, 0, bindings, ctx->Mesa_DXTn);
1716
1717    if (pFormat == PIPE_FORMAT_NONE) {
1718       /* try choosing format again, this time without render target bindings */
1719       pFormat = st_choose_format(st, internalFormat, format, type,
1720                                  PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW,
1721                                  ctx->Mesa_DXTn);
1722    }
1723
1724    if (pFormat == PIPE_FORMAT_NONE) {
1725       /* no luck at all */
1726       return MESA_FORMAT_NONE;
1727    }
1728
1729    return st_pipe_format_to_mesa_format(pFormat);
1730 }
1731
1732
1733 /**
1734  * Called via ctx->Driver.ChooseTextureFormat().
1735  */
1736 size_t
1737 st_QuerySamplesForFormat(struct gl_context *ctx, GLenum internalFormat,
1738                          int samples[16])
1739 {
1740    struct st_context *st = st_context(ctx);
1741    enum pipe_format format;
1742    unsigned i, bind, num_sample_counts = 0;
1743
1744    if (_mesa_is_depth_or_stencil_format(internalFormat))
1745       bind = PIPE_BIND_DEPTH_STENCIL;
1746    else
1747       bind = PIPE_BIND_RENDER_TARGET;
1748
1749    /* Set sample counts in descending order. */
1750    for (i = 16; i > 1; i--) {
1751       format = st_choose_format(st, internalFormat, GL_NONE, GL_NONE,
1752                                 PIPE_TEXTURE_2D, i, bind, FALSE);
1753
1754       if (format != PIPE_FORMAT_NONE) {
1755          samples[num_sample_counts++] = i;
1756       }
1757    }
1758
1759    if (!num_sample_counts) {
1760       samples[num_sample_counts++] = 1;
1761    }
1762
1763    return num_sample_counts;
1764 }
1765
1766
1767 GLboolean
1768 st_sampler_compat_formats(enum pipe_format format1, enum pipe_format format2)
1769 {
1770    if (format1 == format2)
1771       return GL_TRUE;
1772
1773    if (format1 == PIPE_FORMAT_B8G8R8A8_UNORM &&
1774        format2 == PIPE_FORMAT_B8G8R8X8_UNORM)
1775       return GL_TRUE;
1776
1777    if (format1 == PIPE_FORMAT_B8G8R8X8_UNORM &&
1778        format2 == PIPE_FORMAT_B8G8R8A8_UNORM)
1779       return GL_TRUE;
1780
1781    if (format1 == PIPE_FORMAT_A8B8G8R8_UNORM &&
1782        format2 == PIPE_FORMAT_X8B8G8R8_UNORM)
1783       return GL_TRUE;
1784
1785    if (format1 == PIPE_FORMAT_X8B8G8R8_UNORM &&
1786        format2 == PIPE_FORMAT_A8B8G8R8_UNORM)
1787       return GL_TRUE;
1788
1789    if (format1 == PIPE_FORMAT_A8R8G8B8_UNORM &&
1790        format2 == PIPE_FORMAT_X8R8G8B8_UNORM)
1791       return GL_TRUE;
1792
1793    if (format1 == PIPE_FORMAT_X8R8G8B8_UNORM &&
1794        format2 == PIPE_FORMAT_A8R8G8B8_UNORM)
1795       return GL_TRUE;
1796
1797    return GL_FALSE;
1798 }
1799
1800
1801
1802 /**
1803  * This is used for translating texture border color and the clear
1804  * color.  For example, the clear color is interpreted according to
1805  * the renderbuffer's base format.  For example, if clearing a
1806  * GL_LUMINANCE buffer, we'll return colorOut[0] = colorOut[1] =
1807  * colorOut[2] = colorIn[0].
1808  * Similarly for texture border colors.
1809  */
1810 void
1811 st_translate_color(union gl_color_union *colorIn,
1812                    union pipe_color_union *colorOut,
1813                    GLenum baseFormat, GLboolean is_integer)
1814 {
1815    if (is_integer) {
1816       int *in = colorIn->i;
1817       int *out = colorOut->i;
1818
1819       switch (baseFormat) {
1820       case GL_RED:
1821          out[0] = in[0];
1822          out[1] = 0;
1823          out[2] = 0;
1824          out[3] = 1;
1825          break;
1826       case GL_RG:
1827          out[0] = in[0];
1828          out[1] = in[1];
1829          out[2] = 0;
1830          out[3] = 1;
1831          break;
1832       case GL_RGB:
1833          out[0] = in[0];
1834          out[1] = in[1];
1835          out[2] = in[2];
1836          out[3] = 1;
1837          break;
1838       case GL_ALPHA:
1839          out[0] = out[1] = out[2] = 0;
1840          out[3] = in[3];
1841          break;
1842       case GL_LUMINANCE:
1843          out[0] = out[1] = out[2] = in[0];
1844          out[3] = 1;
1845          break;
1846       case GL_LUMINANCE_ALPHA:
1847          out[0] = out[1] = out[2] = in[0];
1848          out[3] = in[3];
1849          break;
1850       case GL_INTENSITY:
1851          out[0] = out[1] = out[2] = out[3] = in[0];
1852          break;
1853       default:
1854          COPY_4V(out, in);
1855       }
1856    }
1857    else {
1858       float *in = colorIn->f;
1859       float *out = colorOut->f;
1860
1861       switch (baseFormat) {
1862       case GL_RED:
1863          out[0] = in[0];
1864          out[1] = 0.0F;
1865          out[2] = 0.0F;
1866          out[3] = 1.0F;
1867          break;
1868       case GL_RG:
1869          out[0] = in[0];
1870          out[1] = in[1];
1871          out[2] = 0.0F;
1872          out[3] = 1.0F;
1873          break;
1874       case GL_RGB:
1875          out[0] = in[0];
1876          out[1] = in[1];
1877          out[2] = in[2];
1878          out[3] = 1.0F;
1879          break;
1880       case GL_ALPHA:
1881          out[0] = out[1] = out[2] = 0.0F;
1882          out[3] = in[3];
1883          break;
1884       case GL_LUMINANCE:
1885          out[0] = out[1] = out[2] = in[0];
1886          out[3] = 1.0F;
1887          break;
1888       case GL_LUMINANCE_ALPHA:
1889          out[0] = out[1] = out[2] = in[0];
1890          out[3] = in[3];
1891          break;
1892       case GL_INTENSITY:
1893          out[0] = out[1] = out[2] = out[3] = in[0];
1894          break;
1895       default:
1896          COPY_4V(out, in);
1897       }
1898    }
1899 }