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/texstore.h"
  38 #include "main/image.h"
  39 #include "main/macros.h"
  40 #include "main/mfeatures.h"
  41
  42 #include "pipe/p_context.h"
  43 #include "pipe/p_defines.h"
  44 #include "pipe/p_screen.h"
  45 #include "util/u_format.h"
  46 #include "st_context.h"
  47 #include "st_format.h"
  48
  49
  50 /**
  51  * Translate Mesa format to Gallium format.
  52  */
  53 enum pipe_format
  54 st_mesa_format_to_pipe_format(gl_format mesaFormat)
  55 {
  56    switch (mesaFormat) {
  57    case MESA_FORMAT_RGBA8888:
  58       return PIPE_FORMAT_A8B8G8R8_UNORM;
  59    case MESA_FORMAT_RGBA8888_REV:
  60       return PIPE_FORMAT_R8G8B8A8_UNORM;
  61    case MESA_FORMAT_ARGB8888:
  62       return PIPE_FORMAT_B8G8R8A8_UNORM;
  63    case MESA_FORMAT_ARGB8888_REV:
  64       return PIPE_FORMAT_A8R8G8B8_UNORM;
  65    case MESA_FORMAT_RGBX8888:
  66       return PIPE_FORMAT_X8B8G8R8_UNORM;
  67    case MESA_FORMAT_RGBX8888_REV:
  68       return PIPE_FORMAT_R8G8B8X8_UNORM;
  69    case MESA_FORMAT_XRGB8888:
  70       return PIPE_FORMAT_B8G8R8X8_UNORM;
  71    case MESA_FORMAT_XRGB8888_REV:
  72       return PIPE_FORMAT_X8R8G8B8_UNORM;
  73    case MESA_FORMAT_ARGB1555:
  74       return PIPE_FORMAT_B5G5R5A1_UNORM;
  75    case MESA_FORMAT_ARGB4444:
  76       return PIPE_FORMAT_B4G4R4A4_UNORM;
  77    case MESA_FORMAT_RGB565:
  78       return PIPE_FORMAT_B5G6R5_UNORM;
  79    case MESA_FORMAT_RGB332:
  80       return PIPE_FORMAT_B2G3R3_UNORM;
  81    case MESA_FORMAT_ARGB2101010:
  82       return PIPE_FORMAT_B10G10R10A2_UNORM;
  83    case MESA_FORMAT_AL44:
  84       return PIPE_FORMAT_L4A4_UNORM;
  85    case MESA_FORMAT_AL88:
  86       return PIPE_FORMAT_L8A8_UNORM;
  87    case MESA_FORMAT_AL1616:
  88       return PIPE_FORMAT_L16A16_UNORM;
  89    case MESA_FORMAT_A8:
  90       return PIPE_FORMAT_A8_UNORM;
  91    case MESA_FORMAT_A16:
  92       return PIPE_FORMAT_A16_UNORM;
  93    case MESA_FORMAT_L8:
  94       return PIPE_FORMAT_L8_UNORM;
  95    case MESA_FORMAT_L16:
  96       return PIPE_FORMAT_L16_UNORM;
  97    case MESA_FORMAT_I8:
  98       return PIPE_FORMAT_I8_UNORM;
  99    case MESA_FORMAT_I16:
 100       return PIPE_FORMAT_I16_UNORM;
 101    case MESA_FORMAT_Z16:
 102       return PIPE_FORMAT_Z16_UNORM;
 103    case MESA_FORMAT_Z32:
 104       return PIPE_FORMAT_Z32_UNORM;
 105    case MESA_FORMAT_Z24_S8:
 106       return PIPE_FORMAT_S8_UINT_Z24_UNORM;
 107    case MESA_FORMAT_S8_Z24:
 108       return PIPE_FORMAT_Z24_UNORM_S8_UINT;
 109    case MESA_FORMAT_Z24_X8:
 110       return PIPE_FORMAT_X8Z24_UNORM;
 111    case MESA_FORMAT_X8_Z24:
 112       return PIPE_FORMAT_Z24X8_UNORM;
 113    case MESA_FORMAT_S8:
 114       return PIPE_FORMAT_S8_UINT;
 115    case MESA_FORMAT_Z32_FLOAT:
 116       return PIPE_FORMAT_Z32_FLOAT;
 117    case MESA_FORMAT_Z32_FLOAT_X24S8:
 118       return PIPE_FORMAT_Z32_FLOAT_S8X24_UINT;
 119    case MESA_FORMAT_YCBCR:
 120       return PIPE_FORMAT_UYVY;
 121 #if FEATURE_texture_s3tc
 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 #if FEATURE_EXT_texture_sRGB
 131    case MESA_FORMAT_SRGB_DXT1:
 132       return PIPE_FORMAT_DXT1_SRGB;
 133    case MESA_FORMAT_SRGBA_DXT1:
 134       return PIPE_FORMAT_DXT1_SRGBA;
 135    case MESA_FORMAT_SRGBA_DXT3:
 136       return PIPE_FORMAT_DXT3_SRGBA;
 137    case MESA_FORMAT_SRGBA_DXT5:
 138       return PIPE_FORMAT_DXT5_SRGBA;
 139 #endif
 140 #endif
 141 #if FEATURE_EXT_texture_sRGB
 142    case MESA_FORMAT_SLA8:
 143       return PIPE_FORMAT_L8A8_SRGB;
 144    case MESA_FORMAT_SL8:
 145       return PIPE_FORMAT_L8_SRGB;
 146    case MESA_FORMAT_SRGB8:
 147       return PIPE_FORMAT_R8G8B8_SRGB;
 148    case MESA_FORMAT_SRGBA8:
 149       return PIPE_FORMAT_A8B8G8R8_SRGB;
 150    case MESA_FORMAT_SARGB8:
 151       return PIPE_FORMAT_B8G8R8A8_SRGB;
 152 #endif
 153    case MESA_FORMAT_RGBA_FLOAT32:
 154       return PIPE_FORMAT_R32G32B32A32_FLOAT;
 155    case MESA_FORMAT_RGBA_FLOAT16:
 156       return PIPE_FORMAT_R16G16B16A16_FLOAT;
 157    case MESA_FORMAT_RGB_FLOAT32:
 158       return PIPE_FORMAT_R32G32B32_FLOAT;
 159    case MESA_FORMAT_RGB_FLOAT16:
 160       return PIPE_FORMAT_R16G16B16_FLOAT;
 161    case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
 162       return PIPE_FORMAT_L32A32_FLOAT;
 163    case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
 164       return PIPE_FORMAT_L16A16_FLOAT;
 165    case MESA_FORMAT_LUMINANCE_FLOAT32:
 166       return PIPE_FORMAT_L32_FLOAT;
 167    case MESA_FORMAT_LUMINANCE_FLOAT16:
 168       return PIPE_FORMAT_L16_FLOAT;
 169    case MESA_FORMAT_ALPHA_FLOAT32:
 170       return PIPE_FORMAT_A32_FLOAT;
 171    case MESA_FORMAT_ALPHA_FLOAT16:
 172       return PIPE_FORMAT_A16_FLOAT;
 173    case MESA_FORMAT_INTENSITY_FLOAT32:
 174       return PIPE_FORMAT_I32_FLOAT;
 175    case MESA_FORMAT_INTENSITY_FLOAT16:
 176       return PIPE_FORMAT_I16_FLOAT;
 177    case MESA_FORMAT_R_FLOAT32:
 178       return PIPE_FORMAT_R32_FLOAT;
 179    case MESA_FORMAT_R_FLOAT16:
 180       return PIPE_FORMAT_R16_FLOAT;
 181    case MESA_FORMAT_RG_FLOAT32:
 182       return PIPE_FORMAT_R32G32_FLOAT;
 183    case MESA_FORMAT_RG_FLOAT16:
 184       return PIPE_FORMAT_R16G16_FLOAT;
 185
 186    case MESA_FORMAT_R8:
 187       return PIPE_FORMAT_R8_UNORM;
 188    case MESA_FORMAT_R16:
 189       return PIPE_FORMAT_R16_UNORM;
 190    case MESA_FORMAT_GR88:
 191       return PIPE_FORMAT_R8G8_UNORM;
 192    case MESA_FORMAT_RG1616:
 193       return PIPE_FORMAT_R16G16_UNORM;
 194    case MESA_FORMAT_RGBA_16:
 195       return PIPE_FORMAT_R16G16B16A16_UNORM;
 196
 197    /* signed int formats */
 198    case MESA_FORMAT_ALPHA_UINT8:
 199       return PIPE_FORMAT_A8_UINT;
 200    case MESA_FORMAT_ALPHA_UINT16:
 201       return PIPE_FORMAT_A16_UINT;
 202    case MESA_FORMAT_ALPHA_UINT32:
 203       return PIPE_FORMAT_A32_UINT;
 204
 205    case MESA_FORMAT_ALPHA_INT8:
 206       return PIPE_FORMAT_A8_SINT;
 207    case MESA_FORMAT_ALPHA_INT16:
 208       return PIPE_FORMAT_A16_SINT;
 209    case MESA_FORMAT_ALPHA_INT32:
 210       return PIPE_FORMAT_A32_SINT;
 211
 212    case MESA_FORMAT_INTENSITY_UINT8:
 213       return PIPE_FORMAT_I8_UINT;
 214    case MESA_FORMAT_INTENSITY_UINT16:
 215       return PIPE_FORMAT_I16_UINT;
 216    case MESA_FORMAT_INTENSITY_UINT32:
 217       return PIPE_FORMAT_I32_UINT;
 218
 219    case MESA_FORMAT_INTENSITY_INT8:
 220       return PIPE_FORMAT_I8_SINT;
 221    case MESA_FORMAT_INTENSITY_INT16:
 222       return PIPE_FORMAT_I16_SINT;
 223    case MESA_FORMAT_INTENSITY_INT32:
 224       return PIPE_FORMAT_I32_SINT;
 225
 226    case MESA_FORMAT_LUMINANCE_UINT8:
 227       return PIPE_FORMAT_L8_UINT;
 228    case MESA_FORMAT_LUMINANCE_UINT16:
 229       return PIPE_FORMAT_L16_UINT;
 230    case MESA_FORMAT_LUMINANCE_UINT32:
 231       return PIPE_FORMAT_L32_UINT;
 232
 233    case MESA_FORMAT_LUMINANCE_INT8:
 234       return PIPE_FORMAT_L8_SINT;
 235    case MESA_FORMAT_LUMINANCE_INT16:
 236       return PIPE_FORMAT_L16_SINT;
 237    case MESA_FORMAT_LUMINANCE_INT32:
 238       return PIPE_FORMAT_L32_SINT;
 239
 240    case MESA_FORMAT_LUMINANCE_ALPHA_UINT8:
 241       return PIPE_FORMAT_L8A8_UINT;
 242    case MESA_FORMAT_LUMINANCE_ALPHA_UINT16:
 243       return PIPE_FORMAT_L16A16_UINT;
 244    case MESA_FORMAT_LUMINANCE_ALPHA_UINT32:
 245       return PIPE_FORMAT_L32A32_UINT;
 246
 247    case MESA_FORMAT_LUMINANCE_ALPHA_INT8:
 248       return PIPE_FORMAT_L8A8_SINT;
 249    case MESA_FORMAT_LUMINANCE_ALPHA_INT16:
 250       return PIPE_FORMAT_L16A16_SINT;
 251    case MESA_FORMAT_LUMINANCE_ALPHA_INT32:
 252       return PIPE_FORMAT_L32A32_SINT;
 253
 254    case MESA_FORMAT_R_INT8:
 255       return PIPE_FORMAT_R8_SINT;
 256    case MESA_FORMAT_RG_INT8:
 257       return PIPE_FORMAT_R8G8_SINT;
 258    case MESA_FORMAT_RGB_INT8:
 259       return PIPE_FORMAT_R8G8B8_SINT;
 260    case MESA_FORMAT_RGBA_INT8:
 261       return PIPE_FORMAT_R8G8B8A8_SINT;
 262    case MESA_FORMAT_R_INT16:
 263       return PIPE_FORMAT_R16_SINT;
 264    case MESA_FORMAT_RG_INT16:
 265       return PIPE_FORMAT_R16G16_SINT;
 266    case MESA_FORMAT_RGB_INT16:
 267       return PIPE_FORMAT_R16G16B16_SINT;
 268    case MESA_FORMAT_RGBA_INT16:
 269       return PIPE_FORMAT_R16G16B16A16_SINT;
 270    case MESA_FORMAT_R_INT32:
 271       return PIPE_FORMAT_R32_SINT;
 272    case MESA_FORMAT_RG_INT32:
 273       return PIPE_FORMAT_R32G32_SINT;
 274    case MESA_FORMAT_RGB_INT32:
 275       return PIPE_FORMAT_R32G32B32_SINT;
 276    case MESA_FORMAT_RGBA_INT32:
 277       return PIPE_FORMAT_R32G32B32A32_SINT;
 278
 279    /* unsigned int formats */
 280    case MESA_FORMAT_R_UINT8:
 281       return PIPE_FORMAT_R8_UINT;
 282    case MESA_FORMAT_RG_UINT8:
 283       return PIPE_FORMAT_R8G8_UINT;
 284    case MESA_FORMAT_RGB_UINT8:
 285       return PIPE_FORMAT_R8G8B8_UINT;
 286    case MESA_FORMAT_RGBA_UINT8:
 287       return PIPE_FORMAT_R8G8B8A8_UINT;
 288    case MESA_FORMAT_R_UINT16:
 289       return PIPE_FORMAT_R16_UINT;
 290    case MESA_FORMAT_RG_UINT16:
 291       return PIPE_FORMAT_R16G16_UINT;
 292    case MESA_FORMAT_RGB_UINT16:
 293       return PIPE_FORMAT_R16G16B16_UINT;
 294    case MESA_FORMAT_RGBA_UINT16:
 295       return PIPE_FORMAT_R16G16B16A16_UINT;
 296    case MESA_FORMAT_R_UINT32:
 297       return PIPE_FORMAT_R32_UINT;
 298    case MESA_FORMAT_RG_UINT32:
 299       return PIPE_FORMAT_R32G32_UINT;
 300    case MESA_FORMAT_RGB_UINT32:
 301       return PIPE_FORMAT_R32G32B32_UINT;
 302    case MESA_FORMAT_RGBA_UINT32:
 303       return PIPE_FORMAT_R32G32B32A32_UINT;
 304
 305    case MESA_FORMAT_RED_RGTC1:
 306       return PIPE_FORMAT_RGTC1_UNORM;
 307    case MESA_FORMAT_SIGNED_RED_RGTC1:
 308       return PIPE_FORMAT_RGTC1_SNORM;
 309    case MESA_FORMAT_RG_RGTC2:
 310       return PIPE_FORMAT_RGTC2_UNORM;
 311    case MESA_FORMAT_SIGNED_RG_RGTC2:
 312       return PIPE_FORMAT_RGTC2_SNORM;
 313
 314    case MESA_FORMAT_L_LATC1:
 315       return PIPE_FORMAT_LATC1_UNORM;
 316    case MESA_FORMAT_SIGNED_L_LATC1:
 317       return PIPE_FORMAT_LATC1_SNORM;
 318    case MESA_FORMAT_LA_LATC2:
 319       return PIPE_FORMAT_LATC2_UNORM;
 320    case MESA_FORMAT_SIGNED_LA_LATC2:
 321       return PIPE_FORMAT_LATC2_SNORM;
 322
 323    case MESA_FORMAT_ETC1_RGB8:
 324       return PIPE_FORMAT_ETC1_RGB8;
 325
 326    /* signed normalized formats */
 327    case MESA_FORMAT_SIGNED_R8:
 328       return PIPE_FORMAT_R8_SNORM;
 329    case MESA_FORMAT_SIGNED_RG88_REV:
 330       return PIPE_FORMAT_R8G8_SNORM;
 331    case MESA_FORMAT_SIGNED_RGBA8888_REV:
 332       return PIPE_FORMAT_R8G8B8A8_SNORM;
 333
 334    case MESA_FORMAT_SIGNED_A8:
 335       return PIPE_FORMAT_A8_SNORM;
 336    case MESA_FORMAT_SIGNED_L8:
 337       return PIPE_FORMAT_L8_SNORM;
 338    case MESA_FORMAT_SIGNED_AL88:
 339       return PIPE_FORMAT_L8A8_SNORM;
 340    case MESA_FORMAT_SIGNED_I8:
 341       return PIPE_FORMAT_I8_SNORM;
 342
 343    case MESA_FORMAT_SIGNED_R16:
 344       return PIPE_FORMAT_R16_SNORM;
 345    case MESA_FORMAT_SIGNED_GR1616:
 346       return PIPE_FORMAT_R16G16_SNORM;
 347    case MESA_FORMAT_SIGNED_RGBA_16:
 348       return PIPE_FORMAT_R16G16B16A16_SNORM;
 349
 350    case MESA_FORMAT_SIGNED_A16:
 351       return PIPE_FORMAT_A16_SNORM;
 352    case MESA_FORMAT_SIGNED_L16:
 353       return PIPE_FORMAT_L16_SNORM;
 354    case MESA_FORMAT_SIGNED_AL1616:
 355       return PIPE_FORMAT_L16A16_SNORM;
 356    case MESA_FORMAT_SIGNED_I16:
 357       return PIPE_FORMAT_I16_SNORM;
 358
 359    case MESA_FORMAT_RGB9_E5_FLOAT:
 360       return PIPE_FORMAT_R9G9B9E5_FLOAT;
 361    case MESA_FORMAT_R11_G11_B10_FLOAT:
 362       return PIPE_FORMAT_R11G11B10_FLOAT;
 363    case MESA_FORMAT_ARGB2101010_UINT:
 364       return PIPE_FORMAT_B10G10R10A2_UINT;
 365    default:
 366       assert(0);
 367       return PIPE_FORMAT_NONE;
 368    }
 369 }
 370
 371
 372 /**
 373  * Translate Gallium format to Mesa format.
 374  */
 375 gl_format
 376 st_pipe_format_to_mesa_format(enum pipe_format format)
 377 {
 378    switch (format) {
 379    case PIPE_FORMAT_A8B8G8R8_UNORM:
 380       return MESA_FORMAT_RGBA8888;
 381    case PIPE_FORMAT_R8G8B8A8_UNORM:
 382       return MESA_FORMAT_RGBA8888_REV;
 383    case PIPE_FORMAT_B8G8R8A8_UNORM:
 384       return MESA_FORMAT_ARGB8888;
 385    case PIPE_FORMAT_A8R8G8B8_UNORM:
 386       return MESA_FORMAT_ARGB8888_REV;
 387    case PIPE_FORMAT_X8B8G8R8_UNORM:
 388       return MESA_FORMAT_RGBX8888;
 389    case PIPE_FORMAT_R8G8B8X8_UNORM:
 390       return MESA_FORMAT_RGBX8888_REV;
 391    case PIPE_FORMAT_B8G8R8X8_UNORM:
 392       return MESA_FORMAT_XRGB8888;
 393    case PIPE_FORMAT_X8R8G8B8_UNORM:
 394       return MESA_FORMAT_XRGB8888_REV;
 395    case PIPE_FORMAT_B5G5R5A1_UNORM:
 396       return MESA_FORMAT_ARGB1555;
 397    case PIPE_FORMAT_B4G4R4A4_UNORM:
 398       return MESA_FORMAT_ARGB4444;
 399    case PIPE_FORMAT_B5G6R5_UNORM:
 400       return MESA_FORMAT_RGB565;
 401    case PIPE_FORMAT_B2G3R3_UNORM:
 402       return MESA_FORMAT_RGB332;
 403    case PIPE_FORMAT_B10G10R10A2_UNORM:
 404       return MESA_FORMAT_ARGB2101010;
 405    case PIPE_FORMAT_L4A4_UNORM:
 406       return MESA_FORMAT_AL44;
 407    case PIPE_FORMAT_L8A8_UNORM:
 408       return MESA_FORMAT_AL88;
 409    case PIPE_FORMAT_L16A16_UNORM:
 410       return MESA_FORMAT_AL1616;
 411    case PIPE_FORMAT_A8_UNORM:
 412       return MESA_FORMAT_A8;
 413    case PIPE_FORMAT_A16_UNORM:
 414       return MESA_FORMAT_A16;
 415    case PIPE_FORMAT_L8_UNORM:
 416       return MESA_FORMAT_L8;
 417    case PIPE_FORMAT_L16_UNORM:
 418       return MESA_FORMAT_L16;
 419    case PIPE_FORMAT_I8_UNORM:
 420       return MESA_FORMAT_I8;
 421    case PIPE_FORMAT_I16_UNORM:
 422       return MESA_FORMAT_I16;
 423    case PIPE_FORMAT_S8_UINT:
 424       return MESA_FORMAT_S8;
 425
 426    case PIPE_FORMAT_R16G16B16A16_UNORM:
 427       return MESA_FORMAT_RGBA_16;
 428
 429    case PIPE_FORMAT_Z16_UNORM:
 430       return MESA_FORMAT_Z16;
 431    case PIPE_FORMAT_Z32_UNORM:
 432       return MESA_FORMAT_Z32;
 433    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 434       return MESA_FORMAT_Z24_S8;
 435    case PIPE_FORMAT_X8Z24_UNORM:
 436       return MESA_FORMAT_Z24_X8;
 437    case PIPE_FORMAT_Z24X8_UNORM:
 438       return MESA_FORMAT_X8_Z24;
 439    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 440       return MESA_FORMAT_S8_Z24;
 441    case PIPE_FORMAT_Z32_FLOAT:
 442       return MESA_FORMAT_Z32_FLOAT;
 443    case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
 444       return MESA_FORMAT_Z32_FLOAT_X24S8;
 445
 446    case PIPE_FORMAT_UYVY:
 447       return MESA_FORMAT_YCBCR;
 448    case PIPE_FORMAT_YUYV:
 449       return MESA_FORMAT_YCBCR_REV;
 450
 451 #if FEATURE_texture_s3tc
 452    case PIPE_FORMAT_DXT1_RGB:
 453       return MESA_FORMAT_RGB_DXT1;
 454    case PIPE_FORMAT_DXT1_RGBA:
 455       return MESA_FORMAT_RGBA_DXT1;
 456    case PIPE_FORMAT_DXT3_RGBA:
 457       return MESA_FORMAT_RGBA_DXT3;
 458    case PIPE_FORMAT_DXT5_RGBA:
 459       return MESA_FORMAT_RGBA_DXT5;
 460 #if FEATURE_EXT_texture_sRGB
 461    case PIPE_FORMAT_DXT1_SRGB:
 462       return MESA_FORMAT_SRGB_DXT1;
 463    case PIPE_FORMAT_DXT1_SRGBA:
 464       return MESA_FORMAT_SRGBA_DXT1;
 465    case PIPE_FORMAT_DXT3_SRGBA:
 466       return MESA_FORMAT_SRGBA_DXT3;
 467    case PIPE_FORMAT_DXT5_SRGBA:
 468       return MESA_FORMAT_SRGBA_DXT5;
 469 #endif
 470 #endif
 471
 472 #if FEATURE_EXT_texture_sRGB
 473    case PIPE_FORMAT_L8A8_SRGB:
 474       return MESA_FORMAT_SLA8;
 475    case PIPE_FORMAT_L8_SRGB:
 476       return MESA_FORMAT_SL8;
 477    case PIPE_FORMAT_R8G8B8_SRGB:
 478       return MESA_FORMAT_SRGB8;
 479    case PIPE_FORMAT_A8B8G8R8_SRGB:
 480       return MESA_FORMAT_SRGBA8;
 481    case PIPE_FORMAT_B8G8R8A8_SRGB:
 482       return MESA_FORMAT_SARGB8;
 483 #endif
 484    case PIPE_FORMAT_R32G32B32A32_FLOAT:
 485       return MESA_FORMAT_RGBA_FLOAT32;
 486    case PIPE_FORMAT_R16G16B16A16_FLOAT:
 487       return MESA_FORMAT_RGBA_FLOAT16;
 488    case PIPE_FORMAT_R32G32B32_FLOAT:
 489       return MESA_FORMAT_RGB_FLOAT32;
 490    case PIPE_FORMAT_R16G16B16_FLOAT:
 491       return MESA_FORMAT_RGB_FLOAT16;
 492    case PIPE_FORMAT_L32A32_FLOAT:
 493       return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
 494    case PIPE_FORMAT_L16A16_FLOAT:
 495       return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
 496    case PIPE_FORMAT_L32_FLOAT:
 497       return MESA_FORMAT_LUMINANCE_FLOAT32;
 498    case PIPE_FORMAT_L16_FLOAT:
 499       return MESA_FORMAT_LUMINANCE_FLOAT16;
 500    case PIPE_FORMAT_A32_FLOAT:
 501       return MESA_FORMAT_ALPHA_FLOAT32;
 502    case PIPE_FORMAT_A16_FLOAT:
 503       return MESA_FORMAT_ALPHA_FLOAT16;
 504    case PIPE_FORMAT_I32_FLOAT:
 505       return MESA_FORMAT_INTENSITY_FLOAT32;
 506    case PIPE_FORMAT_I16_FLOAT:
 507       return MESA_FORMAT_INTENSITY_FLOAT16;
 508    case PIPE_FORMAT_R32_FLOAT:
 509       return MESA_FORMAT_R_FLOAT32;
 510    case PIPE_FORMAT_R16_FLOAT:
 511       return MESA_FORMAT_R_FLOAT16;
 512    case PIPE_FORMAT_R32G32_FLOAT:
 513       return MESA_FORMAT_RG_FLOAT32;
 514    case PIPE_FORMAT_R16G16_FLOAT:
 515       return MESA_FORMAT_RG_FLOAT16;
 516
 517    case PIPE_FORMAT_R8_UNORM:
 518       return MESA_FORMAT_R8;
 519    case PIPE_FORMAT_R16_UNORM:
 520       return MESA_FORMAT_R16;
 521    case PIPE_FORMAT_R8G8_UNORM:
 522       return MESA_FORMAT_GR88;
 523    case PIPE_FORMAT_R16G16_UNORM:
 524       return MESA_FORMAT_RG1616;
 525
 526    case PIPE_FORMAT_A8_UINT:
 527       return MESA_FORMAT_ALPHA_UINT8;
 528    case PIPE_FORMAT_A16_UINT:
 529       return MESA_FORMAT_ALPHA_UINT16;
 530    case PIPE_FORMAT_A32_UINT:
 531       return MESA_FORMAT_ALPHA_UINT32;
 532    case PIPE_FORMAT_A8_SINT:
 533       return MESA_FORMAT_ALPHA_INT8;
 534    case PIPE_FORMAT_A16_SINT:
 535       return MESA_FORMAT_ALPHA_INT16;
 536    case PIPE_FORMAT_A32_SINT:
 537       return MESA_FORMAT_ALPHA_INT32;
 538
 539    case PIPE_FORMAT_I8_UINT:
 540       return MESA_FORMAT_INTENSITY_UINT8;
 541    case PIPE_FORMAT_I16_UINT:
 542       return MESA_FORMAT_INTENSITY_UINT16;
 543    case PIPE_FORMAT_I32_UINT:
 544       return MESA_FORMAT_INTENSITY_UINT32;
 545    case PIPE_FORMAT_I8_SINT:
 546       return MESA_FORMAT_INTENSITY_INT8;
 547    case PIPE_FORMAT_I16_SINT:
 548       return MESA_FORMAT_INTENSITY_INT16;
 549    case PIPE_FORMAT_I32_SINT:
 550       return MESA_FORMAT_INTENSITY_INT32;
 551
 552   case PIPE_FORMAT_L8_UINT:
 553       return MESA_FORMAT_LUMINANCE_UINT8;
 554    case PIPE_FORMAT_L16_UINT:
 555       return MESA_FORMAT_LUMINANCE_UINT16;
 556    case PIPE_FORMAT_L32_UINT:
 557       return MESA_FORMAT_LUMINANCE_UINT32;
 558    case PIPE_FORMAT_L8_SINT:
 559       return MESA_FORMAT_LUMINANCE_INT8;
 560    case PIPE_FORMAT_L16_SINT:
 561       return MESA_FORMAT_LUMINANCE_INT16;
 562    case PIPE_FORMAT_L32_SINT:
 563       return MESA_FORMAT_LUMINANCE_INT32;
 564
 565    case PIPE_FORMAT_L8A8_UINT:
 566       return MESA_FORMAT_LUMINANCE_ALPHA_UINT8;
 567    case PIPE_FORMAT_L16A16_UINT:
 568       return MESA_FORMAT_LUMINANCE_ALPHA_UINT16;
 569    case PIPE_FORMAT_L32A32_UINT:
 570       return MESA_FORMAT_LUMINANCE_ALPHA_UINT32;
 571    case PIPE_FORMAT_L8A8_SINT:
 572       return MESA_FORMAT_LUMINANCE_ALPHA_INT8;
 573    case PIPE_FORMAT_L16A16_SINT:
 574       return MESA_FORMAT_LUMINANCE_ALPHA_INT16;
 575    case PIPE_FORMAT_L32A32_SINT:
 576       return MESA_FORMAT_LUMINANCE_ALPHA_INT32;
 577
 578    case PIPE_FORMAT_R8_SINT:
 579       return MESA_FORMAT_R_INT8;
 580    case PIPE_FORMAT_R8G8_SINT:
 581       return MESA_FORMAT_RG_INT8;
 582    case PIPE_FORMAT_R8G8B8_SINT:
 583       return MESA_FORMAT_RGB_INT8;
 584    case PIPE_FORMAT_R8G8B8A8_SINT:
 585       return MESA_FORMAT_RGBA_INT8;
 586
 587    case PIPE_FORMAT_R16_SINT:
 588       return MESA_FORMAT_R_INT16;
 589    case PIPE_FORMAT_R16G16_SINT:
 590       return MESA_FORMAT_RG_INT16;
 591    case PIPE_FORMAT_R16G16B16_SINT:
 592       return MESA_FORMAT_RGB_INT16;
 593    case PIPE_FORMAT_R16G16B16A16_SINT:
 594       return MESA_FORMAT_RGBA_INT16;
 595
 596    case PIPE_FORMAT_R32_SINT:
 597       return MESA_FORMAT_R_INT32;
 598    case PIPE_FORMAT_R32G32_SINT:
 599       return MESA_FORMAT_RG_INT32;
 600    case PIPE_FORMAT_R32G32B32_SINT:
 601       return MESA_FORMAT_RGB_INT32;
 602    case PIPE_FORMAT_R32G32B32A32_SINT:
 603       return MESA_FORMAT_RGBA_INT32;
 604
 605    /* unsigned int formats */
 606    case PIPE_FORMAT_R8_UINT:
 607       return MESA_FORMAT_R_UINT8;
 608    case PIPE_FORMAT_R8G8_UINT:
 609       return MESA_FORMAT_RG_UINT8;
 610    case PIPE_FORMAT_R8G8B8_UINT:
 611       return MESA_FORMAT_RGB_UINT8;
 612    case PIPE_FORMAT_R8G8B8A8_UINT:
 613       return MESA_FORMAT_RGBA_UINT8;
 614
 615    case PIPE_FORMAT_R16_UINT:
 616       return MESA_FORMAT_R_UINT16;
 617    case PIPE_FORMAT_R16G16_UINT:
 618       return MESA_FORMAT_RG_UINT16;
 619    case PIPE_FORMAT_R16G16B16_UINT:
 620       return MESA_FORMAT_RGB_UINT16;
 621    case PIPE_FORMAT_R16G16B16A16_UINT:
 622       return MESA_FORMAT_RGBA_UINT16;
 623
 624    case PIPE_FORMAT_R32_UINT:
 625       return MESA_FORMAT_R_UINT32;
 626    case PIPE_FORMAT_R32G32_UINT:
 627       return MESA_FORMAT_RG_UINT32;
 628    case PIPE_FORMAT_R32G32B32_UINT:
 629       return MESA_FORMAT_RGB_UINT32;
 630    case PIPE_FORMAT_R32G32B32A32_UINT:
 631       return MESA_FORMAT_RGBA_UINT32;
 632
 633    case PIPE_FORMAT_RGTC1_UNORM:
 634       return MESA_FORMAT_RED_RGTC1;
 635    case PIPE_FORMAT_RGTC1_SNORM:
 636       return MESA_FORMAT_SIGNED_RED_RGTC1;
 637    case PIPE_FORMAT_RGTC2_UNORM:
 638       return MESA_FORMAT_RG_RGTC2;
 639    case PIPE_FORMAT_RGTC2_SNORM:
 640       return MESA_FORMAT_SIGNED_RG_RGTC2;
 641
 642    case PIPE_FORMAT_LATC1_UNORM:
 643       return MESA_FORMAT_L_LATC1;
 644    case PIPE_FORMAT_LATC1_SNORM:
 645       return MESA_FORMAT_SIGNED_L_LATC1;
 646    case PIPE_FORMAT_LATC2_UNORM:
 647       return MESA_FORMAT_LA_LATC2;
 648    case PIPE_FORMAT_LATC2_SNORM:
 649       return MESA_FORMAT_SIGNED_LA_LATC2;
 650
 651    case PIPE_FORMAT_ETC1_RGB8:
 652       return MESA_FORMAT_ETC1_RGB8;
 653
 654    /* signed normalized formats */
 655    case PIPE_FORMAT_R8_SNORM:
 656       return MESA_FORMAT_SIGNED_R8;
 657    case PIPE_FORMAT_R8G8_SNORM:
 658       return MESA_FORMAT_SIGNED_RG88_REV;
 659    case PIPE_FORMAT_R8G8B8A8_SNORM:
 660       return MESA_FORMAT_SIGNED_RGBA8888_REV;
 661
 662    case PIPE_FORMAT_A8_SNORM:
 663       return MESA_FORMAT_SIGNED_A8;
 664    case PIPE_FORMAT_L8_SNORM:
 665       return MESA_FORMAT_SIGNED_L8;
 666    case PIPE_FORMAT_L8A8_SNORM:
 667       return MESA_FORMAT_SIGNED_AL88;
 668    case PIPE_FORMAT_I8_SNORM:
 669       return MESA_FORMAT_SIGNED_I8;
 670
 671    case PIPE_FORMAT_R16_SNORM:
 672       return MESA_FORMAT_SIGNED_R16;
 673    case PIPE_FORMAT_R16G16_SNORM:
 674       return MESA_FORMAT_SIGNED_GR1616;
 675    case PIPE_FORMAT_R16G16B16A16_SNORM:
 676       return MESA_FORMAT_SIGNED_RGBA_16;
 677
 678    case PIPE_FORMAT_A16_SNORM:
 679       return MESA_FORMAT_SIGNED_A16;
 680    case PIPE_FORMAT_L16_SNORM:
 681       return MESA_FORMAT_SIGNED_L16;
 682    case PIPE_FORMAT_L16A16_SNORM:
 683       return MESA_FORMAT_SIGNED_AL1616;
 684    case PIPE_FORMAT_I16_SNORM:
 685       return MESA_FORMAT_SIGNED_I16;
 686
 687    case PIPE_FORMAT_R9G9B9E5_FLOAT:
 688       return MESA_FORMAT_RGB9_E5_FLOAT;
 689    case PIPE_FORMAT_R11G11B10_FLOAT:
 690       return MESA_FORMAT_R11_G11_B10_FLOAT;
 691
 692    case PIPE_FORMAT_B10G10R10A2_UINT:
 693       return MESA_FORMAT_ARGB2101010_UINT;
 694    default:
 695       assert(0);
 696       return MESA_FORMAT_NONE;
 697    }
 698 }
 699
 700
 701 /**
 702  * Map GL texture formats to Gallium pipe formats.
 703  */
 704 struct format_mapping
 705 {
 706    GLenum glFormats[18];       /**< list of GLenum formats, 0-terminated */
 707    enum pipe_format pipeFormats[10]; /**< list of pipe formats, 0-terminated */
 708 };
 709
 710
 711 #define DEFAULT_RGBA_FORMATS \
 712       PIPE_FORMAT_B8G8R8A8_UNORM, \
 713       PIPE_FORMAT_A8R8G8B8_UNORM, \
 714       PIPE_FORMAT_A8B8G8R8_UNORM, \
 715       PIPE_FORMAT_B5G6R5_UNORM, \
 716       0
 717
 718 #define DEFAULT_RGB_FORMATS \
 719       PIPE_FORMAT_B8G8R8X8_UNORM, \
 720       PIPE_FORMAT_X8R8G8B8_UNORM, \
 721       PIPE_FORMAT_X8B8G8R8_UNORM, \
 722       PIPE_FORMAT_B8G8R8A8_UNORM, \
 723       PIPE_FORMAT_A8R8G8B8_UNORM, \
 724       PIPE_FORMAT_A8B8G8R8_UNORM, \
 725       PIPE_FORMAT_B5G6R5_UNORM, \
 726       0
 727
 728 #define DEFAULT_SRGBA_FORMATS \
 729       PIPE_FORMAT_B8G8R8A8_SRGB, \
 730       PIPE_FORMAT_A8R8G8B8_SRGB, \
 731       PIPE_FORMAT_A8B8G8R8_SRGB, \
 732       0
 733
 734 #define DEFAULT_DEPTH_FORMATS \
 735       PIPE_FORMAT_Z24X8_UNORM, \
 736       PIPE_FORMAT_X8Z24_UNORM, \
 737       PIPE_FORMAT_Z16_UNORM, \
 738       PIPE_FORMAT_Z24_UNORM_S8_UINT, \
 739       PIPE_FORMAT_S8_UINT_Z24_UNORM, \
 740       0
 741
 742 #define DEFAULT_SNORM8_RGBA_FORMATS \
 743       PIPE_FORMAT_R8G8B8A8_SNORM, \
 744       0
 745
 746 #define DEFAULT_UNORM16_RGBA_FORMATS \
 747       PIPE_FORMAT_R16G16B16A16_UNORM, \
 748       DEFAULT_RGBA_FORMATS
 749
 750
 751 /**
 752  * This table maps OpenGL texture format enums to Gallium pipe_format enums.
 753  * Multiple GL enums might map to multiple pipe_formats.
 754  * The first pipe format in the list that's supported is the one that's chosen.
 755  */
 756 static const struct format_mapping format_map[] = {
 757    /* Basic RGB, RGBA formats */
 758    {
 759       { GL_RGB10, GL_RGB10_A2, 0 },
 760       { PIPE_FORMAT_B10G10R10A2_UNORM, DEFAULT_RGBA_FORMATS }
 761    },
 762    {
 763       { 4, GL_RGBA, GL_RGBA8, 0 },
 764       { PIPE_FORMAT_R8G8B8A8_UNORM, DEFAULT_RGBA_FORMATS }
 765    },
 766    {
 767       { GL_BGRA, 0 },
 768       { PIPE_FORMAT_B8G8R8A8_UNORM, DEFAULT_RGBA_FORMATS }
 769    },
 770    {
 771       { 3, GL_RGB, GL_RGB8, 0 },
 772       { DEFAULT_RGB_FORMATS }
 773    },
 774    {
 775       { GL_RGB12, GL_RGB16, GL_RGBA12, GL_RGBA16, 0 },
 776       { PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGBA_FORMATS }
 777    },
 778    {
 779       { GL_RGBA4, GL_RGBA2, 0 },
 780       { PIPE_FORMAT_B4G4R4A4_UNORM, DEFAULT_RGBA_FORMATS }
 781    },
 782    {
 783       { GL_RGB5_A1, 0 },
 784       { PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }
 785    },
 786    {
 787       { GL_R3_G3_B2, 0 },
 788       { PIPE_FORMAT_B2G3R3_UNORM, PIPE_FORMAT_B5G6R5_UNORM,
 789         PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }
 790    },
 791    {
 792       { GL_RGB5, GL_RGB4 },
 793       { PIPE_FORMAT_B5G6R5_UNORM, PIPE_FORMAT_B5G5R5A1_UNORM,
 794         DEFAULT_RGBA_FORMATS }
 795    },
 796
 797    /* basic Alpha formats */
 798    {
 799       { GL_ALPHA12, GL_ALPHA16, 0 },
 800       { PIPE_FORMAT_A16_UNORM, PIPE_FORMAT_A8_UNORM,
 801         DEFAULT_RGBA_FORMATS }
 802    },
 803    {
 804       { GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_COMPRESSED_ALPHA, 0 },
 805       { PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
 806    },
 807
 808    /* basic Luminance formats */
 809    {
 810       { GL_LUMINANCE12, GL_LUMINANCE16, 0 },
 811       { PIPE_FORMAT_L16_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
 812    },
 813    {
 814       { 1, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8, 0 },
 815       { PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
 816    },
 817
 818    /* basic Luminance/Alpha formats */
 819    {
 820       { GL_LUMINANCE12_ALPHA4, GL_LUMINANCE12_ALPHA12,
 821         GL_LUMINANCE16_ALPHA16, 0},
 822       { PIPE_FORMAT_L16A16_UNORM, PIPE_FORMAT_L8A8_UNORM,
 823         DEFAULT_RGBA_FORMATS }
 824    },
 825    {
 826       { 2, GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, GL_LUMINANCE8_ALPHA8, 0 },
 827       { PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
 828    },
 829    {
 830       { GL_LUMINANCE4_ALPHA4, 0 },
 831       { PIPE_FORMAT_L4A4_UNORM, PIPE_FORMAT_L8A8_UNORM,
 832         DEFAULT_RGBA_FORMATS }
 833    },
 834
 835    /* basic Intensity formats */
 836    {
 837       { GL_INTENSITY12, GL_INTENSITY16, 0 },
 838       { PIPE_FORMAT_I16_UNORM, PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
 839    },
 840    {
 841       { GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8,
 842         GL_COMPRESSED_INTENSITY, 0 },
 843       { PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
 844    },
 845
 846    /* YCbCr */
 847    {
 848       { GL_YCBCR_MESA, 0 },
 849       { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV, 0 }
 850    },
 851
 852    /* compressed formats */ /* XXX PIPE_BIND_SAMPLER_VIEW only */
 853    {
 854       { GL_COMPRESSED_RGB, 0 },
 855       { PIPE_FORMAT_DXT1_RGB, DEFAULT_RGB_FORMATS }
 856    },
 857    {
 858       { GL_COMPRESSED_RGBA, 0 },
 859       { PIPE_FORMAT_DXT5_RGBA, DEFAULT_RGBA_FORMATS }
 860    },
 861    {
 862       { GL_RGB_S3TC, GL_RGB4_S3TC, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0 },
 863       { PIPE_FORMAT_DXT1_RGB, 0 }
 864    },
 865    {
 866       { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0 },
 867       { PIPE_FORMAT_DXT1_RGBA, 0 }
 868    },
 869    {
 870       { GL_RGBA_S3TC, GL_RGBA4_S3TC, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0 },
 871       { PIPE_FORMAT_DXT3_RGBA, 0 }
 872    },
 873    {
 874       { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0 },
 875       { PIPE_FORMAT_DXT5_RGBA, 0 }
 876    },
 877
 878 #if 0
 879    {
 880       { GL_COMPRESSED_RGB_FXT1_3DFX, 0 },
 881       { PIPE_FORMAT_RGB_FXT1, 0 }
 882    },
 883    {
 884       { GL_COMPRESSED_RGBA_FXT1_3DFX, 0 },
 885       { PIPE_FORMAT_RGBA_FXT1, 0 }
 886    },
 887 #endif
 888
 889    /* Depth formats */
 890    {
 891       { GL_DEPTH_COMPONENT16, 0 },
 892       { PIPE_FORMAT_Z16_UNORM, DEFAULT_DEPTH_FORMATS }
 893    },
 894    {
 895       { GL_DEPTH_COMPONENT24, 0 },
 896       { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
 897         DEFAULT_DEPTH_FORMATS }
 898    },
 899    {
 900       { GL_DEPTH_COMPONENT32, 0 },
 901       { PIPE_FORMAT_Z32_UNORM, DEFAULT_DEPTH_FORMATS }
 902    },
 903    {
 904       { GL_DEPTH_COMPONENT, 0 },
 905       { DEFAULT_DEPTH_FORMATS }
 906    },
 907    {
 908       { GL_DEPTH_COMPONENT32F, 0 },
 909       { PIPE_FORMAT_Z32_FLOAT, 0 }
 910    },
 911
 912    /* stencil formats */
 913    {
 914       { GL_STENCIL_INDEX, GL_STENCIL_INDEX1_EXT, GL_STENCIL_INDEX4_EXT,
 915         GL_STENCIL_INDEX8_EXT, GL_STENCIL_INDEX16_EXT, 0 },
 916       {
 917          PIPE_FORMAT_S8_UINT, PIPE_FORMAT_Z24_UNORM_S8_UINT,
 918          PIPE_FORMAT_S8_UINT_Z24_UNORM, 0
 919       }
 920    },
 921
 922    /* Depth / Stencil formats */
 923    {
 924       { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 },
 925       { PIPE_FORMAT_Z24_UNORM_S8_UINT, PIPE_FORMAT_S8_UINT_Z24_UNORM, 0 }
 926    },
 927    {
 928       { GL_DEPTH32F_STENCIL8, 0 },
 929       { PIPE_FORMAT_Z32_FLOAT_S8X24_UINT, 0 }
 930    },
 931
 932    /* sRGB formats */
 933    {
 934       { GL_SRGB_EXT, GL_SRGB8_EXT, GL_SRGB_ALPHA_EXT, GL_SRGB8_ALPHA8_EXT, 0 },
 935       { DEFAULT_SRGBA_FORMATS }
 936    },
 937    {
 938       { GL_COMPRESSED_SRGB_EXT, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 0 },
 939       { PIPE_FORMAT_DXT1_SRGB, DEFAULT_SRGBA_FORMATS }
 940    },
 941    {
 942       { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 0 },
 943       { PIPE_FORMAT_DXT1_SRGBA, 0 }
 944    },
 945    {
 946       { GL_COMPRESSED_SRGB_ALPHA_EXT,
 947         GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 0 },
 948       { PIPE_FORMAT_DXT3_SRGBA, DEFAULT_SRGBA_FORMATS }
 949    },
 950    {
 951       { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 0 },
 952       { PIPE_FORMAT_DXT5_SRGBA, 0 }
 953    },
 954    {
 955       { GL_SLUMINANCE_ALPHA_EXT, GL_SLUMINANCE8_ALPHA8_EXT,
 956         GL_COMPRESSED_SLUMINANCE_EXT, GL_COMPRESSED_SLUMINANCE_ALPHA_EXT, 0 },
 957       { PIPE_FORMAT_L8A8_SRGB, DEFAULT_SRGBA_FORMATS }
 958    },
 959    {
 960       { GL_SLUMINANCE_EXT, GL_SLUMINANCE8_EXT, 0 },
 961       { PIPE_FORMAT_L8_SRGB, DEFAULT_SRGBA_FORMATS }
 962    },
 963
 964    /* 16-bit float formats */
 965    {
 966       { GL_RGBA16F_ARB, 0 },
 967       { PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
 968    },
 969    {
 970       { GL_RGB16F_ARB, 0 },
 971       { PIPE_FORMAT_R16G16B16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
 972         PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
 973    },
 974    {
 975       { GL_LUMINANCE_ALPHA16F_ARB, 0 },
 976       { PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
 977         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
 978    },
 979    {
 980       { GL_ALPHA16F_ARB, 0 },
 981       { PIPE_FORMAT_A16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
 982         PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
 983         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
 984    },
 985    {
 986       { GL_INTENSITY16F_ARB, 0 },
 987       { PIPE_FORMAT_I16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
 988         PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
 989         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
 990    },
 991    {
 992       { GL_LUMINANCE16F_ARB, 0 },
 993       { PIPE_FORMAT_L16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
 994         PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
 995         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
 996    },
 997    {
 998       { GL_R16F, 0 },
 999       { PIPE_FORMAT_R16_FLOAT, PIPE_FORMAT_R16G16_FLOAT,
1000         PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1001         PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1002    },
1003    {
1004       { GL_RG16F, 0 },
1005       { PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1006         PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1007    },
1008
1009    /* 32-bit float formats */
1010    {
1011       { GL_RGBA32F_ARB, 0 },
1012       { PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1013    },
1014    {
1015       { GL_RGB32F_ARB, 0 },
1016       { PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1017         PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1018    },
1019    {
1020       { GL_LUMINANCE_ALPHA32F_ARB, 0 },
1021       { PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1022         PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1023    },
1024    {
1025       { GL_ALPHA32F_ARB, 0 },
1026       { PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1027         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_A16_FLOAT,
1028         PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1029    },
1030    {
1031       { GL_INTENSITY32F_ARB, 0 },
1032       { PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1033         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_I16_FLOAT,
1034         PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1035    },
1036    {
1037       { GL_LUMINANCE32F_ARB, 0 },
1038       { PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1039         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_L16_FLOAT,
1040         PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1041    },
1042    {
1043       { GL_R32F, 0 },
1044       { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT,
1045         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16_FLOAT,
1046         PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1047    },
1048    {
1049       { GL_RG32F, 0 },
1050       { PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1051         PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1052    },
1053
1054    /* R, RG formats */
1055    {
1056       { GL_RED, GL_R8, 0 },
1057       { PIPE_FORMAT_R8_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1058    },
1059    {
1060       { GL_RG, GL_RG8, 0 },
1061       { PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1062    },
1063    {
1064       { GL_R16, 0 },
1065       { PIPE_FORMAT_R16_UNORM, PIPE_FORMAT_R16G16_UNORM,
1066         DEFAULT_UNORM16_RGBA_FORMATS }
1067    },
1068    {
1069       { GL_RG16, 0 },
1070       { PIPE_FORMAT_R16G16_UNORM, DEFAULT_UNORM16_RGBA_FORMATS }
1071    },
1072
1073    /* compressed R, RG formats */
1074    {
1075       { GL_COMPRESSED_RED, GL_COMPRESSED_RED_RGTC1, 0 },
1076       { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_R8_UNORM, DEFAULT_RGBA_FORMATS }
1077    },
1078    {
1079       { GL_COMPRESSED_SIGNED_RED_RGTC1, 0 },
1080       { PIPE_FORMAT_RGTC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1081    },
1082    {
1083       { GL_COMPRESSED_RG, GL_COMPRESSED_RG_RGTC2, 0 },
1084       { PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1085    },
1086    {
1087       { GL_COMPRESSED_SIGNED_RG_RGTC2, 0 },
1088       { PIPE_FORMAT_RGTC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1089    },
1090    {
1091       { GL_COMPRESSED_LUMINANCE, GL_COMPRESSED_LUMINANCE_LATC1_EXT, 0 },
1092       { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGBA_FORMATS }
1093    },
1094    {
1095       { GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT, 0 },
1096       { PIPE_FORMAT_LATC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1097    },
1098    {
1099       { GL_COMPRESSED_LUMINANCE_ALPHA, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT,
1100         GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI, 0 },
1101       { PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
1102    },
1103    {
1104       { GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT, 0 },
1105       { PIPE_FORMAT_LATC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1106    },
1107
1108    /* ETC1 */
1109    {
1110       { GL_ETC1_RGB8_OES, 0 },
1111       { PIPE_FORMAT_ETC1_RGB8, 0 }
1112    },
1113
1114    /* signed/unsigned integer formats.
1115     */
1116    {
1117       { GL_RED_INTEGER_EXT,
1118         GL_GREEN_INTEGER_EXT,
1119         GL_BLUE_INTEGER_EXT,
1120         GL_RGBA_INTEGER_EXT,
1121         GL_BGRA_INTEGER_EXT,
1122         GL_RGBA8I_EXT, 0 },
1123       { PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1124    },
1125    {
1126       { GL_RGB_INTEGER_EXT,
1127         GL_BGR_INTEGER_EXT,
1128         GL_RGB8I_EXT, 0 },
1129       { PIPE_FORMAT_R8G8B8_SINT,
1130         PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1131    },
1132    {
1133       { GL_ALPHA_INTEGER_EXT,
1134         GL_ALPHA8I_EXT, 0 },
1135       { PIPE_FORMAT_A8_SINT, 0 }
1136    },
1137    {
1138       { GL_ALPHA16I_EXT, 0 },
1139       { PIPE_FORMAT_A16_SINT, 0 }
1140    },
1141    {
1142       { GL_ALPHA32I_EXT, 0 },
1143       { PIPE_FORMAT_A32_SINT, 0 }
1144    },
1145    {
1146       { GL_ALPHA8UI_EXT, 0 },
1147       { PIPE_FORMAT_A8_UINT, 0 }
1148    },
1149    {
1150       { GL_ALPHA16UI_EXT, 0 },
1151       { PIPE_FORMAT_A16_UINT, 0 }
1152    },
1153    {
1154       { GL_ALPHA32UI_EXT, 0 },
1155       { PIPE_FORMAT_A32_UINT, 0 }
1156    },
1157    {
1158       { GL_INTENSITY8I_EXT, 0 },
1159       { PIPE_FORMAT_I8_SINT, 0 }
1160    },
1161    {
1162       { GL_INTENSITY16I_EXT, 0 },
1163       { PIPE_FORMAT_I16_SINT, 0 }
1164    },
1165    {
1166       { GL_INTENSITY32I_EXT, 0 },
1167       { PIPE_FORMAT_I32_SINT, 0 }
1168    },
1169    {
1170       { GL_INTENSITY8UI_EXT, 0 },
1171       { PIPE_FORMAT_I8_UINT, 0 }
1172    },
1173    {
1174       { GL_INTENSITY16UI_EXT, 0 },
1175       { PIPE_FORMAT_I16_UINT, 0 }
1176    },
1177    {
1178       { GL_INTENSITY32UI_EXT, 0 },
1179       { PIPE_FORMAT_I32_UINT, 0 }
1180    },
1181    {
1182       { GL_LUMINANCE8I_EXT, 0 },
1183       { PIPE_FORMAT_L8_SINT, 0 }
1184    },
1185    {
1186       { GL_LUMINANCE16I_EXT, 0 },
1187       { PIPE_FORMAT_L16_SINT, 0 }
1188    },
1189    {
1190       { GL_LUMINANCE32I_EXT, 0 },
1191       { PIPE_FORMAT_L32_SINT, 0 }
1192    },
1193    {
1194       { GL_LUMINANCE_INTEGER_EXT,
1195         GL_LUMINANCE8UI_EXT, 0 },
1196       { PIPE_FORMAT_L8_UINT, 0 }
1197    },
1198    {
1199       { GL_LUMINANCE16UI_EXT, 0 },
1200       { PIPE_FORMAT_L16_UINT, 0 }
1201    },
1202    {
1203       { GL_LUMINANCE32UI_EXT, 0 },
1204       { PIPE_FORMAT_L32_UINT, 0 }
1205    },
1206    {
1207       { GL_LUMINANCE_ALPHA_INTEGER_EXT,
1208         GL_LUMINANCE_ALPHA8I_EXT, 0 },
1209       { PIPE_FORMAT_L8A8_SINT, 0 }
1210    },
1211    {
1212       { GL_LUMINANCE_ALPHA16I_EXT, 0 },
1213       { PIPE_FORMAT_L16A16_SINT, 0 }
1214    },
1215    {
1216       { GL_LUMINANCE_ALPHA32I_EXT, 0 },
1217       { PIPE_FORMAT_L32A32_SINT, 0 }
1218    },
1219    {
1220       { GL_LUMINANCE_ALPHA8UI_EXT, 0 },
1221       { PIPE_FORMAT_L8A8_UINT, 0 }
1222    },
1223    {
1224       { GL_LUMINANCE_ALPHA16UI_EXT, 0 },
1225       { PIPE_FORMAT_L16A16_UINT, 0 }
1226    },
1227    {
1228       { GL_LUMINANCE_ALPHA32UI_EXT, 0 },
1229       { PIPE_FORMAT_L32A32_UINT, 0 }
1230    },
1231    {
1232       { GL_RGB16I_EXT, 0 },
1233       { PIPE_FORMAT_R16G16B16_SINT,
1234         PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1235    },
1236    {
1237       { GL_RGBA16I_EXT, 0 },
1238       { PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1239    },
1240    {
1241       { GL_RGB32I_EXT, 0 },
1242       { PIPE_FORMAT_R32G32B32_SINT,
1243         PIPE_FORMAT_R32G32B32A32_SINT, 0 },
1244    },
1245    {
1246       { GL_RGBA32I_EXT, 0 },
1247       { PIPE_FORMAT_R32G32B32A32_SINT, 0 }
1248    },
1249    {
1250       { GL_RGBA8UI_EXT, 0 },
1251       { PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1252    },
1253    {
1254       { GL_RGB8UI_EXT, 0 },
1255       { PIPE_FORMAT_R8G8B8_UINT,
1256         PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1257    },
1258    {
1259       { GL_RGB16UI_EXT, 0 },
1260       { PIPE_FORMAT_R16G16B16_UINT,
1261         PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1262    },
1263    {
1264       { GL_RGBA16UI_EXT, 0 },
1265       { PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1266    },
1267    {
1268       { GL_RGB32UI_EXT, 0},
1269       { PIPE_FORMAT_R32G32B32_UINT,
1270         PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1271    },
1272    {
1273       { GL_RGBA32UI_EXT, 0},
1274       { PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1275    },
1276    {
1277      { GL_R8I, 0},
1278      { PIPE_FORMAT_R8_SINT, 0},
1279    },
1280    {
1281      { GL_R16I, 0},
1282      { PIPE_FORMAT_R16_SINT, 0},
1283    },
1284    {
1285      { GL_R32I, 0},
1286      { PIPE_FORMAT_R32_SINT, 0},
1287    },
1288   {
1289      { GL_R8UI, 0},
1290      { PIPE_FORMAT_R8_UINT, 0},
1291    },
1292    {
1293      { GL_R16UI, 0},
1294      { PIPE_FORMAT_R16_UINT, 0},
1295    },
1296    {
1297      { GL_R32UI, 0},
1298      { PIPE_FORMAT_R32_UINT, 0},
1299    },
1300    {
1301      { GL_RG8I, 0},
1302      { PIPE_FORMAT_R8G8_SINT, 0},
1303    },
1304    {
1305      { GL_RG16I, 0},
1306      { PIPE_FORMAT_R16G16_SINT, 0},
1307    },
1308    {
1309      { GL_RG32I, 0},
1310      { PIPE_FORMAT_R32G32_SINT, 0},
1311    },
1312   {
1313      { GL_RG8UI, 0},
1314      { PIPE_FORMAT_R8G8_UINT, 0},
1315    },
1316    {
1317      { GL_RG16UI, 0},
1318      { PIPE_FORMAT_R16G16_UINT, 0},
1319    },
1320    {
1321      { GL_RG32UI, 0},
1322      { PIPE_FORMAT_R32G32_UINT, 0},
1323    },
1324    /* signed normalized formats */
1325    {
1326       { GL_RED_SNORM, GL_R8_SNORM, 0 },
1327       { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM,
1328         PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1329    },
1330    {
1331       { GL_R16_SNORM, 0 },
1332       { PIPE_FORMAT_R16_SNORM,
1333         PIPE_FORMAT_R16G16_SNORM,
1334         PIPE_FORMAT_R16G16B16A16_SNORM,
1335         PIPE_FORMAT_R8_SNORM,
1336         PIPE_FORMAT_R8G8_SNORM,
1337         PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1338    },
1339    {
1340       { GL_RG_SNORM, GL_RG8_SNORM, 0 },
1341       { PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1342    },
1343    {
1344       { GL_RG16_SNORM, 0 },
1345       { PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1346         PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1347    },
1348    {
1349       { GL_RGB_SNORM, GL_RGB8_SNORM, GL_RGBA_SNORM, GL_RGBA8_SNORM, 0 },
1350       { PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1351    },
1352    {
1353       { GL_RGB16_SNORM, GL_RGBA16_SNORM, 0 },
1354       { PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1355    },
1356    {
1357       { GL_ALPHA_SNORM, GL_ALPHA8_SNORM, 0 },
1358       { PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1359    },
1360    {
1361       { GL_ALPHA16_SNORM, 0 },
1362       { PIPE_FORMAT_A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1363         PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1364    },
1365    {
1366       { GL_LUMINANCE_SNORM, GL_LUMINANCE8_SNORM, 0 },
1367       { PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1368    },
1369    {
1370       { GL_LUMINANCE16_SNORM, 0 },
1371       { PIPE_FORMAT_L16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1372         PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1373    },
1374    {
1375       { GL_LUMINANCE_ALPHA_SNORM, GL_LUMINANCE8_ALPHA8_SNORM, 0 },
1376       { PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1377    },
1378    {
1379       { GL_LUMINANCE16_ALPHA16_SNORM, 0 },
1380       { PIPE_FORMAT_L16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1381         PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1382    },
1383    {
1384       { GL_INTENSITY_SNORM, GL_INTENSITY8_SNORM, 0 },
1385       { PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1386    },
1387    {
1388       { GL_INTENSITY16_SNORM, 0 },
1389       { PIPE_FORMAT_I16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1390         PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1391    },
1392    {
1393       { GL_RGB9_E5, 0 },
1394       { PIPE_FORMAT_R9G9B9E5_FLOAT, 0 }
1395    },
1396    {
1397       { GL_R11F_G11F_B10F, 0 },
1398       { PIPE_FORMAT_R11G11B10_FLOAT, 0 }
1399    },
1400    {
1401       { GL_RGB10_A2UI, 0 },
1402       { PIPE_FORMAT_B10G10R10A2_UINT, 0 }
1403    },
1404 };
1405
1406
1407 /**
1408  * Return first supported format from the given list.
1409  */
1410 static enum pipe_format
1411 find_supported_format(struct pipe_screen *screen,
1412                       const enum pipe_format formats[],
1413                       enum pipe_texture_target target,
1414                       unsigned sample_count,
1415                       unsigned tex_usage)
1416 {
1417    uint i;
1418    for (i = 0; formats[i]; i++) {
1419       if (screen->is_format_supported(screen, formats[i], target,
1420                                       sample_count, tex_usage)) {
1421          return formats[i];
1422       }
1423    }
1424    return PIPE_FORMAT_NONE;
1425 }
1426
1427 struct exact_format_mapping
1428 {
1429    GLenum format;
1430    GLenum type;
1431    enum pipe_format pformat;
1432 };
1433
1434 static const struct exact_format_mapping rgba8888_tbl[] =
1435 {
1436    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_A8B8G8R8_UNORM },
1437    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_A8B8G8R8_UNORM },
1438    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_R8G8B8A8_UNORM },
1439    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_R8G8B8A8_UNORM },
1440    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_A8R8G8B8_UNORM },
1441    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_B8G8R8A8_UNORM },
1442    { GL_RGBA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_R8G8B8A8_UNORM },
1443    { GL_ABGR_EXT, GL_UNSIGNED_BYTE,               PIPE_FORMAT_A8B8G8R8_UNORM },
1444    { GL_BGRA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_B8G8R8A8_UNORM },
1445    { 0,           0,                              0                          }
1446 };
1447
1448 static const struct exact_format_mapping rgbx8888_tbl[] =
1449 {
1450    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_X8R8G8B8_UNORM },
1451    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_B8G8R8X8_UNORM },
1452    { GL_BGRA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_B8G8R8X8_UNORM },
1453    /* No Mesa formats for these Gallium formats:
1454    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_X8B8G8R8_UNORM },
1455    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_X8B8G8R8_UNORM },
1456    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_R8G8B8X8_UNORM },
1457    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_R8G8B8X8_UNORM },
1458    { GL_RGBA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_R8G8B8X8_UNORM },
1459    { GL_ABGR_EXT, GL_UNSIGNED_BYTE,               PIPE_FORMAT_X8B8G8R8_UNORM },
1460    */
1461    { 0,           0,                              0                          }
1462 };
1463
1464 static const struct exact_format_mapping rgba1010102_tbl[] =
1465 {
1466    { GL_BGRA,     GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_B10G10R10A2_UNORM },
1467    /* No Mesa formats for these Gallium formats:
1468    { GL_RGBA,     GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_R10G10B10A2_UNORM },
1469    { GL_ABGR_EXT, GL_UNSIGNED_INT_10_10_10_2,     PIPE_FORMAT_R10G10B10A2_UNORM },
1470    { GL_ABGR_EXT, GL_UNSIGNED_INT,                PIPE_FORMAT_R10G10B10A2_UNORM },
1471    */
1472    { 0,           0,                              0                             }
1473 };
1474
1475 /**
1476  * If there is an exact pipe_format match for {internalFormat, format, type}
1477  * return that, otherwise return PIPE_FORMAT_NONE so we can do fuzzy matching.
1478  */
1479 static enum pipe_format
1480 find_exact_format(GLint internalFormat, GLenum format, GLenum type)
1481 {
1482    uint i;
1483    const struct exact_format_mapping* tbl;
1484
1485    if (format == GL_NONE || type == GL_NONE)
1486       return PIPE_FORMAT_NONE;
1487
1488    switch (internalFormat) {
1489    case 4:
1490    case GL_RGBA:
1491    case GL_RGBA8:
1492       tbl = rgba8888_tbl;
1493       break;
1494    case 3:
1495    case GL_RGB:
1496    case GL_RGB8:
1497       tbl = rgbx8888_tbl;
1498       break;
1499    case GL_RGB10_A2:
1500       tbl = rgba1010102_tbl;
1501       break;
1502    default:
1503       return PIPE_FORMAT_NONE;
1504    }
1505
1506    for (i = 0; tbl[i].format; i++)
1507       if (tbl[i].format == format && tbl[i].type == type)
1508          return tbl[i].pformat;
1509
1510    return PIPE_FORMAT_NONE;
1511 }
1512
1513 /**
1514  * Given an OpenGL internalFormat value for a texture or surface, return
1515  * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
1516  * This is called during glTexImage2D, for example.
1517  *
1518  * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus
1519  * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if
1520  * we want render-to-texture ability.
1521  *
1522  * \param internalFormat  the user value passed to glTexImage2D
1523  * \param target  one of PIPE_TEXTURE_x
1524  * \param bindings  bitmask of PIPE_BIND_x flags.
1525  */
1526 enum pipe_format
1527 st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
1528                  GLenum format, GLenum type,
1529                  enum pipe_texture_target target, unsigned sample_count,
1530                  unsigned bindings)
1531 {
1532    GET_CURRENT_CONTEXT(ctx); /* XXX this should be a function parameter */
1533    int i, j;
1534    enum pipe_format pf;
1535
1536    /* can't render to compressed formats at this time */
1537    if (_mesa_is_compressed_format(ctx, internalFormat)
1538        && (bindings & ~PIPE_BIND_SAMPLER_VIEW)) {
1539       return PIPE_FORMAT_NONE;
1540    }
1541
1542    /* search for exact matches */
1543    pf = find_exact_format(internalFormat, format, type);
1544    if (pf != PIPE_FORMAT_NONE &&
1545        screen->is_format_supported(screen, pf,
1546                                    target, sample_count, bindings))
1547       return pf;
1548
1549    /* search table for internalFormat */
1550    for (i = 0; i < Elements(format_map); i++) {
1551       const struct format_mapping *mapping = &format_map[i];
1552       for (j = 0; mapping->glFormats[j]; j++) {
1553          if (mapping->glFormats[j] == internalFormat) {
1554             /* Found the desired internal format.  Find first pipe format
1555              * which is supported by the driver.
1556              */
1557             return find_supported_format(screen, mapping->pipeFormats,
1558                                          target, sample_count, bindings);
1559          }
1560       }
1561    }
1562
1563    _mesa_problem(NULL, "unhandled format!\n");
1564    return PIPE_FORMAT_NONE;
1565 }
1566
1567
1568 /**
1569  * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
1570  */
1571 enum pipe_format
1572 st_choose_renderbuffer_format(struct pipe_screen *screen,
1573                               GLenum internalFormat, unsigned sample_count)
1574 {
1575    uint usage;
1576    if (_mesa_is_depth_or_stencil_format(internalFormat))
1577       usage = PIPE_BIND_DEPTH_STENCIL;
1578    else
1579       usage = PIPE_BIND_RENDER_TARGET;
1580    return st_choose_format(screen, internalFormat, GL_NONE, GL_NONE, PIPE_TEXTURE_2D,
1581                            sample_count, usage);
1582 }
1583
1584
1585 gl_format
1586 st_ChooseTextureFormat_renderable(struct gl_context *ctx, GLint internalFormat,
1587                                   GLenum format, GLenum type, GLboolean renderable)
1588 {
1589    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
1590    enum pipe_format pFormat;
1591    uint bindings;
1592
1593    (void) format;
1594    (void) type;
1595
1596    /* GL textures may wind up being render targets, but we don't know
1597     * that in advance.  Specify potential render target flags now.
1598     */
1599    bindings = PIPE_BIND_SAMPLER_VIEW;
1600    if (renderable) {
1601       if (_mesa_is_depth_or_stencil_format(internalFormat))
1602          bindings |= PIPE_BIND_DEPTH_STENCIL;
1603       else
1604          bindings |= PIPE_BIND_RENDER_TARGET;
1605    }
1606
1607    pFormat = st_choose_format(screen, internalFormat, format, type,
1608                               PIPE_TEXTURE_2D, 0, bindings);
1609
1610    if (pFormat == PIPE_FORMAT_NONE) {
1611       /* try choosing format again, this time without render target bindings */
1612       pFormat = st_choose_format(screen, internalFormat, format, type,
1613                                  PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);
1614    }
1615
1616    if (pFormat == PIPE_FORMAT_NONE) {
1617       /* no luck at all */
1618       return MESA_FORMAT_NONE;
1619    }
1620
1621    return st_pipe_format_to_mesa_format(pFormat);
1622 }
1623
1624
1625 /**
1626  * Called via ctx->Driver.ChooseTextureFormat().
1627  */
1628 gl_format
1629 st_ChooseTextureFormat(struct gl_context *ctx, GLint internalFormat,
1630                        GLenum format, GLenum type)
1631 {
1632    boolean want_renderable =
1633       internalFormat == 3 || internalFormat == 4 ||
1634       internalFormat == GL_RGB || internalFormat == GL_RGBA ||
1635       internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||
1636       internalFormat == GL_BGRA;
1637
1638    return st_ChooseTextureFormat_renderable(ctx, internalFormat,
1639                                             format, type, want_renderable);
1640 }
1641
1642
1643 GLboolean
1644 st_sampler_compat_formats(enum pipe_format format1, enum pipe_format format2)
1645 {
1646    if (format1 == format2)
1647       return GL_TRUE;
1648
1649    if (format1 == PIPE_FORMAT_B8G8R8A8_UNORM &&
1650        format2 == PIPE_FORMAT_B8G8R8X8_UNORM)
1651       return GL_TRUE;
1652
1653    if (format1 == PIPE_FORMAT_B8G8R8X8_UNORM &&
1654        format2 == PIPE_FORMAT_B8G8R8A8_UNORM)
1655       return GL_TRUE;
1656
1657    if (format1 == PIPE_FORMAT_A8B8G8R8_UNORM &&
1658        format2 == PIPE_FORMAT_X8B8G8R8_UNORM)
1659       return GL_TRUE;
1660
1661    if (format1 == PIPE_FORMAT_X8B8G8R8_UNORM &&
1662        format2 == PIPE_FORMAT_A8B8G8R8_UNORM)
1663       return GL_TRUE;
1664
1665    if (format1 == PIPE_FORMAT_A8R8G8B8_UNORM &&
1666        format2 == PIPE_FORMAT_X8R8G8B8_UNORM)
1667       return GL_TRUE;
1668
1669    if (format1 == PIPE_FORMAT_X8R8G8B8_UNORM &&
1670        format2 == PIPE_FORMAT_A8R8G8B8_UNORM)
1671       return GL_TRUE;
1672
1673    return GL_FALSE;
1674 }
1675
1676
1677
1678 /**
1679  * This is used for translating texture border color and the clear
1680  * color.  For example, the clear color is interpreted according to
1681  * the renderbuffer's base format.  For example, if clearing a
1682  * GL_LUMINANCE buffer, we'll return colorOut[0] = colorOut[1] =
1683  * colorOut[2] = colorIn[0].
1684  * Similarly for texture border colors.
1685  */
1686 void
1687 st_translate_color(const GLfloat colorIn[4], GLenum baseFormat,
1688                    GLfloat colorOut[4])
1689 {
1690    switch (baseFormat) {
1691    case GL_RED:
1692       colorOut[0] = colorIn[0];
1693       colorOut[1] = 0.0F;
1694       colorOut[2] = 0.0F;
1695       colorOut[3] = 1.0F;
1696       break;
1697    case GL_RG:
1698       colorOut[0] = colorIn[0];
1699       colorOut[1] = colorIn[1];
1700       colorOut[2] = 0.0F;
1701       colorOut[3] = 1.0F;
1702       break;
1703    case GL_RGB:
1704       colorOut[0] = colorIn[0];
1705       colorOut[1] = colorIn[1];
1706       colorOut[2] = colorIn[2];
1707       colorOut[3] = 1.0F;
1708       break;
1709    case GL_ALPHA:
1710       colorOut[0] = colorOut[1] = colorOut[2] = 0.0;
1711       colorOut[3] = colorIn[3];
1712       break;
1713    case GL_LUMINANCE:
1714       colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
1715       colorOut[3] = 1.0;
1716       break;
1717    case GL_LUMINANCE_ALPHA:
1718       colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
1719       colorOut[3] = colorIn[3];
1720       break;
1721    case GL_INTENSITY:
1722       colorOut[0] = colorOut[1] = colorOut[2] = colorOut[3] = colorIn[0];
1723       break;
1724    default:
1725       COPY_4V(colorOut, colorIn);
1726    }
1727 }