src/mesa/main/texformat.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   5  * Copyright (c) 2008-2009 VMware, Inc.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26
  27 /**
  28  * \file texformat.c
  29  * Texture formats.
  30  *
  31  * \author Gareth Hughes
  32  * \author Brian Paul
  33  */
  34
  35
  36 #include "context.h"
  37 #include "enums.h"
  38 #include "mtypes.h"
  39 #include "texcompress.h"
  40 #include "texformat.h"
  41
  42 #define RETURN_IF_SUPPORTED(f) do {             \
  43    if (ctx->TextureFormatSupported[f])          \
  44       return f;                                 \
  45 } while (0)
  46
  47 /**
  48  * Choose an appropriate texture format given the format, type and
  49  * internalFormat parameters passed to glTexImage().
  50  *
  51  * \param ctx  the GL context.
  52  * \param target  a texture target (GL_TEXTURE_x)
  53  * \param internalFormat  user's prefered internal texture format.
  54  * \param format  incoming image pixel format.
  55  * \param type  incoming image data type.
  56  *
  57  * \return the closest mesa_format for the given format/type arguments
  58  *
  59  * This is called via dd_function_table::ChooseTextureFormat.  Hardware
  60  * drivers may override this function with a specialized version.
  61  */
  62 mesa_format
  63 _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
  64                         GLint internalFormat, GLenum format, GLenum type)
  65 {
  66    (void) format;
  67
  68    switch (internalFormat) {
  69    /* shallow RGBA formats */
  70    case 4:
  71    case GL_RGBA:
  72       if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
  73          RETURN_IF_SUPPORTED(MESA_FORMAT_B4G4R4A4_UNORM);
  74       } else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
  75          RETURN_IF_SUPPORTED(MESA_FORMAT_B5G5R5A1_UNORM);
  76       } else if (type == GL_UNSIGNED_INT_2_10_10_10_REV) {
  77          RETURN_IF_SUPPORTED(MESA_FORMAT_B10G10R10A2_UNORM);
  78       }
  79       /* fallthrough */
  80
  81    case GL_RGBA8:
  82       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_UNORM);
  83       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_UNORM);
  84       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
  85       break;
  86    case GL_RGB5_A1:
  87       RETURN_IF_SUPPORTED(MESA_FORMAT_B5G5R5A1_UNORM);
  88       break;
  89    case GL_RGBA2:
  90       RETURN_IF_SUPPORTED(MESA_FORMAT_A4R4G4B4_UNORM); /* just to test another format*/
  91       RETURN_IF_SUPPORTED(MESA_FORMAT_B4G4R4A4_UNORM);
  92       break;
  93    case GL_RGBA4:
  94       RETURN_IF_SUPPORTED(MESA_FORMAT_B4G4R4A4_UNORM);
  95       break;
  96
  97    /* deep RGBA formats */
  98    case GL_RGB10_A2:
  99       RETURN_IF_SUPPORTED(MESA_FORMAT_R10G10B10A2_UNORM);
 100       RETURN_IF_SUPPORTED(MESA_FORMAT_B10G10R10A2_UNORM);
 101       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
 102       break;
 103    case GL_RGBA12:
 104    case GL_RGBA16:
 105       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UNORM16);
 106       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UNORM16);
 107       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_UNORM);
 108       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
 109       break;
 110
 111    /* shallow RGB formats */
 112    case 3:
 113    case GL_RGB:
 114       if (type == GL_UNSIGNED_INT_2_10_10_10_REV) {
 115          RETURN_IF_SUPPORTED(MESA_FORMAT_B10G10R10A2_UNORM);
 116       }
 117       /* fallthrough */
 118    case GL_RGB8:
 119       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UNORM8);
 120       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8X8_UNORM);
 121       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_UNORM);
 122
 123       RETURN_IF_SUPPORTED(MESA_FORMAT_BGR_UNORM8);
 124       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8X8_UNORM);
 125       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
 126       break;
 127    case GL_R3_G3_B2:
 128       RETURN_IF_SUPPORTED(MESA_FORMAT_B2G3R3_UNORM);
 129       RETURN_IF_SUPPORTED(MESA_FORMAT_B5G6R5_UNORM);
 130       RETURN_IF_SUPPORTED(MESA_FORMAT_R5G6B5_UNORM);
 131       RETURN_IF_SUPPORTED(MESA_FORMAT_BGR_UNORM8);
 132       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8X8_UNORM);
 133       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
 134       break;
 135    case GL_RGB4:
 136       RETURN_IF_SUPPORTED(MESA_FORMAT_R5G6B5_UNORM); /* just to test another format */
 137       RETURN_IF_SUPPORTED(MESA_FORMAT_B5G6R5_UNORM);
 138       break;
 139    case GL_RGB5:
 140       RETURN_IF_SUPPORTED(MESA_FORMAT_B5G6R5_UNORM);
 141       break;
 142
 143    /* deep RGB formats */
 144    case GL_RGB10:
 145    case GL_RGB12:
 146    case GL_RGB16:
 147       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_UNORM16);
 148       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UNORM16);
 149       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8X8_UNORM);
 150       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
 151       break;
 152
 153    /* Alpha formats */
 154    case GL_ALPHA:
 155    case GL_ALPHA4:
 156    case GL_ALPHA8:
 157       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM8);
 158       break;
 159
 160    case GL_ALPHA12:
 161    case GL_ALPHA16:
 162       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM16);
 163       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM8);
 164       break;
 165
 166    /* Luminance formats */
 167    case 1:
 168    case GL_LUMINANCE:
 169    case GL_LUMINANCE4:
 170    case GL_LUMINANCE8:
 171       RETURN_IF_SUPPORTED(MESA_FORMAT_L_UNORM8);
 172       break;
 173
 174    case GL_LUMINANCE12:
 175    case GL_LUMINANCE16:
 176       RETURN_IF_SUPPORTED(MESA_FORMAT_L_UNORM16);
 177       RETURN_IF_SUPPORTED(MESA_FORMAT_L_UNORM8);
 178       break;
 179
 180       /* Luminance/Alpha formats */
 181    case GL_LUMINANCE4_ALPHA4:
 182       RETURN_IF_SUPPORTED(MESA_FORMAT_L4A4_UNORM);
 183       RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM);
 184       break;
 185
 186    case 2:
 187    case GL_LUMINANCE_ALPHA:
 188    case GL_LUMINANCE6_ALPHA2:
 189    case GL_LUMINANCE8_ALPHA8:
 190       RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM);
 191       break;
 192
 193    case GL_LUMINANCE12_ALPHA4:
 194    case GL_LUMINANCE12_ALPHA12:
 195    case GL_LUMINANCE16_ALPHA16:
 196       RETURN_IF_SUPPORTED(MESA_FORMAT_L16A16_UNORM);
 197       RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM);
 198       break;
 199
 200    case GL_INTENSITY:
 201    case GL_INTENSITY4:
 202    case GL_INTENSITY8:
 203       RETURN_IF_SUPPORTED(MESA_FORMAT_I_UNORM8);
 204       break;
 205
 206    case GL_INTENSITY12:
 207    case GL_INTENSITY16:
 208       RETURN_IF_SUPPORTED(MESA_FORMAT_I_UNORM16);
 209       RETURN_IF_SUPPORTED(MESA_FORMAT_I_UNORM8);
 210       break;
 211
 212    case GL_DEPTH_COMPONENT:
 213    case GL_DEPTH_COMPONENT24:
 214    case GL_DEPTH_COMPONENT32:
 215       RETURN_IF_SUPPORTED(MESA_FORMAT_Z_UNORM32);
 216       RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_UNORM_X8_UINT);
 217       RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_UNORM_S8_UINT);
 218       break;
 219    case GL_DEPTH_COMPONENT16:
 220       RETURN_IF_SUPPORTED(MESA_FORMAT_Z_UNORM16);
 221       RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_UNORM_X8_UINT);
 222       RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_UNORM_S8_UINT);
 223       break;
 224
 225    case GL_COMPRESSED_ALPHA_ARB:
 226       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM8);
 227       break;
 228    case GL_COMPRESSED_LUMINANCE_ARB:
 229       RETURN_IF_SUPPORTED(MESA_FORMAT_L_UNORM8);
 230       break;
 231    case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
 232       RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM);
 233       break;
 234    case GL_COMPRESSED_INTENSITY_ARB:
 235       RETURN_IF_SUPPORTED(MESA_FORMAT_I_UNORM8);
 236       break;
 237    case GL_COMPRESSED_RGB_ARB:
 238       /* We don't use texture compression for 1D and 1D array textures.
 239        * For 1D textures, compressions doesn't buy us much.
 240        * For 1D ARRAY textures, there's complicated issues with updating
 241        * sub-regions on non-block boundaries with glCopyTexSubImage, among
 242        * other issues.  FWIW, the GL_EXT_texture_array extension prohibits
 243        * 1D ARRAY textures in S3TC format.
 244        */
 245       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) {
 246          if (ctx->Mesa_DXTn)
 247             RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
 248          RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
 249       }
 250       RETURN_IF_SUPPORTED(MESA_FORMAT_BGR_UNORM8);
 251       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8X8_UNORM);
 252       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
 253       break;
 254    case GL_COMPRESSED_RGBA_ARB:
 255       /* We don't use texture compression for 1D and 1D array textures. */
 256       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) {
 257          if (ctx->Mesa_DXTn)
 258             RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3); /* Not rgba_dxt1, see spec */
 259          RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
 260       }
 261       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_UNORM);
 262       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
 263       break;
 264
 265    case GL_RGB565:
 266       RETURN_IF_SUPPORTED(MESA_FORMAT_B5G6R5_UNORM);
 267       break;
 268
 269    case GL_YCBCR_MESA:
 270       if (type == GL_UNSIGNED_SHORT_8_8_MESA)
 271          RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR);
 272       else
 273          RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR_REV);
 274       break;
 275
 276    /* For non-generic compressed format we assert two things:
 277     *
 278     * 1. The format has already been validated against the set of available
 279     *    extensions.
 280     *
 281     * 2. The driver only enables the extension if it supports all of the
 282     *    formats that are part of that extension.
 283     */
 284    case GL_COMPRESSED_RGB_FXT1_3DFX:
 285       return MESA_FORMAT_RGB_FXT1;
 286    case GL_COMPRESSED_RGBA_FXT1_3DFX:
 287       return MESA_FORMAT_RGBA_FXT1;
 288    case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
 289    case GL_RGB_S3TC:
 290    case GL_RGB4_S3TC:
 291       return MESA_FORMAT_RGB_DXT1;
 292    case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
 293       return MESA_FORMAT_RGBA_DXT1;
 294    case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
 295    case GL_RGBA_S3TC:
 296    case GL_RGBA4_S3TC:
 297       return MESA_FORMAT_RGBA_DXT3;
 298    case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
 299       return MESA_FORMAT_RGBA_DXT5;
 300    case GL_COMPRESSED_RED_RGTC1:
 301       return MESA_FORMAT_R_RGTC1_UNORM;
 302    case GL_COMPRESSED_SIGNED_RED_RGTC1:
 303       return MESA_FORMAT_R_RGTC1_SNORM;
 304    case GL_COMPRESSED_RG_RGTC2:
 305       return MESA_FORMAT_RG_RGTC2_UNORM;
 306    case GL_COMPRESSED_SIGNED_RG_RGTC2:
 307       return MESA_FORMAT_RG_RGTC2_SNORM;
 308    case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
 309       return MESA_FORMAT_L_LATC1_UNORM;
 310    case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
 311       return MESA_FORMAT_L_LATC1_SNORM;
 312    case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
 313       return MESA_FORMAT_LA_LATC2_UNORM;
 314    case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
 315       return MESA_FORMAT_LA_LATC2_SNORM;
 316    case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
 317       return MESA_FORMAT_LA_LATC2_UNORM;
 318    case GL_ETC1_RGB8_OES:
 319       return MESA_FORMAT_ETC1_RGB8;
 320    case GL_COMPRESSED_RGB8_ETC2:
 321       return MESA_FORMAT_ETC2_RGB8;
 322    case GL_COMPRESSED_SRGB8_ETC2:
 323       return MESA_FORMAT_ETC2_SRGB8;
 324    case GL_COMPRESSED_RGBA8_ETC2_EAC:
 325       return MESA_FORMAT_ETC2_RGBA8_EAC;
 326    case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
 327       return MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC;
 328    case GL_COMPRESSED_R11_EAC:
 329       return MESA_FORMAT_ETC2_R11_EAC;
 330    case GL_COMPRESSED_RG11_EAC:
 331       return MESA_FORMAT_ETC2_RG11_EAC;
 332    case GL_COMPRESSED_SIGNED_R11_EAC:
 333       return MESA_FORMAT_ETC2_SIGNED_R11_EAC;
 334    case GL_COMPRESSED_SIGNED_RG11_EAC:
 335       return MESA_FORMAT_ETC2_SIGNED_RG11_EAC;
 336    case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
 337       return MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1;
 338    case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
 339       return MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1;
 340    case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
 341       return MESA_FORMAT_SRGB_DXT1;
 342    case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
 343       return MESA_FORMAT_SRGBA_DXT1;
 344    case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
 345       return MESA_FORMAT_SRGBA_DXT3;
 346    case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
 347       return MESA_FORMAT_SRGBA_DXT5;
 348    case GL_COMPRESSED_RGBA_BPTC_UNORM:
 349       return MESA_FORMAT_BPTC_RGBA_UNORM;
 350    case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
 351       return MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM;
 352    case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT:
 353       return MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT;
 354    case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
 355       return MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT;
 356
 357    case GL_ALPHA16F_ARB:
 358       RETURN_IF_SUPPORTED(MESA_FORMAT_A_FLOAT16);
 359       RETURN_IF_SUPPORTED(MESA_FORMAT_A_FLOAT32);
 360       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 361       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 362       break;
 363    case GL_ALPHA32F_ARB:
 364       RETURN_IF_SUPPORTED(MESA_FORMAT_A_FLOAT32);
 365       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 366       RETURN_IF_SUPPORTED(MESA_FORMAT_A_FLOAT16);
 367       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 368       break;
 369    case GL_LUMINANCE16F_ARB:
 370       RETURN_IF_SUPPORTED(MESA_FORMAT_L_FLOAT16);
 371       RETURN_IF_SUPPORTED(MESA_FORMAT_L_FLOAT32);
 372       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 373       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 374       break;
 375    case GL_LUMINANCE32F_ARB:
 376       RETURN_IF_SUPPORTED(MESA_FORMAT_L_FLOAT32);
 377       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 378       RETURN_IF_SUPPORTED(MESA_FORMAT_L_FLOAT16);
 379       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 380       break;
 381    case GL_LUMINANCE_ALPHA16F_ARB:
 382       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_FLOAT16);
 383       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_FLOAT32);
 384       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 385       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 386       break;
 387    case GL_LUMINANCE_ALPHA32F_ARB:
 388       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_FLOAT32);
 389       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 390       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_FLOAT16);
 391       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 392       break;
 393    case GL_INTENSITY16F_ARB:
 394       RETURN_IF_SUPPORTED(MESA_FORMAT_I_FLOAT16);
 395       RETURN_IF_SUPPORTED(MESA_FORMAT_I_FLOAT32);
 396       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 397       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 398       break;
 399    case GL_INTENSITY32F_ARB:
 400       RETURN_IF_SUPPORTED(MESA_FORMAT_I_FLOAT32);
 401       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 402       RETURN_IF_SUPPORTED(MESA_FORMAT_I_FLOAT16);
 403       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 404       break;
 405    case GL_RGB16F_ARB:
 406       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
 407       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_FLOAT16);
 408       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 409       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
 410       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 411       break;
 412    case GL_RGB32F_ARB:
 413       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
 414       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_FLOAT32);
 415       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 416       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
 417       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 418       break;
 419    case GL_RGBA16F_ARB:
 420       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 421       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 422       break;
 423    case GL_RGBA32F_ARB:
 424       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 425       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 426       break;
 427
 428    case GL_RGB9_E5:
 429       /* GL_EXT_texture_shared_exponent -- just one format to support */
 430       ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R9G9B9E5_FLOAT]);
 431       return MESA_FORMAT_R9G9B9E5_FLOAT;
 432
 433    case GL_R11F_G11F_B10F:
 434       /* GL_EXT_texture_packed_float -- just one format to support */
 435       ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R11G11B10_FLOAT]);
 436       return MESA_FORMAT_R11G11B10_FLOAT;
 437
 438    case GL_DEPTH_STENCIL_EXT:
 439    case GL_DEPTH24_STENCIL8_EXT:
 440       RETURN_IF_SUPPORTED(MESA_FORMAT_S8_UINT_Z24_UNORM);
 441       RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_UNORM_S8_UINT);
 442       break;
 443
 444    case GL_DEPTH_COMPONENT32F:
 445       ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z_FLOAT32]);
 446       return MESA_FORMAT_Z_FLOAT32;
 447    case GL_DEPTH32F_STENCIL8:
 448       ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_S8X24_UINT]);
 449       return MESA_FORMAT_Z32_FLOAT_S8X24_UINT;
 450
 451    case GL_RED_SNORM:
 452    case GL_R8_SNORM:
 453       RETURN_IF_SUPPORTED(MESA_FORMAT_R_SNORM8);
 454       break;
 455    case GL_RG_SNORM:
 456    case GL_RG8_SNORM:
 457       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8_SNORM);
 458       break;
 459    case GL_RGB_SNORM:
 460    case GL_RGB8_SNORM:
 461       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8X8_SNORM);
 462       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 463       RETURN_IF_SUPPORTED(MESA_FORMAT_X8B8G8R8_SNORM);
 464       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 465       break;
 466    case GL_RGBA_SNORM:
 467    case GL_RGBA8_SNORM:
 468       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 469       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 470       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 471       break;
 472    case GL_ALPHA_SNORM:
 473    case GL_ALPHA8_SNORM:
 474       RETURN_IF_SUPPORTED(MESA_FORMAT_A_SNORM8);
 475       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 476       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 477       break;
 478    case GL_LUMINANCE_SNORM:
 479    case GL_LUMINANCE8_SNORM:
 480       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SNORM8);
 481       RETURN_IF_SUPPORTED(MESA_FORMAT_X8B8G8R8_SNORM);
 482       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 483       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 484       break;
 485    case GL_LUMINANCE_ALPHA_SNORM:
 486    case GL_LUMINANCE8_ALPHA8_SNORM:
 487       RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_SNORM);
 488       RETURN_IF_SUPPORTED(MESA_FORMAT_A8L8_SNORM);
 489       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 490       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 491       break;
 492    case GL_INTENSITY_SNORM:
 493    case GL_INTENSITY8_SNORM:
 494       RETURN_IF_SUPPORTED(MESA_FORMAT_I_SNORM8);
 495       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 496       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 497       break;
 498    case GL_R16_SNORM:
 499       RETURN_IF_SUPPORTED(MESA_FORMAT_R_SNORM16);
 500       break;
 501    case GL_RG16_SNORM:
 502       RETURN_IF_SUPPORTED(MESA_FORMAT_R16G16_SNORM);
 503       break;
 504    case GL_RGB16_SNORM:
 505       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_SNORM16);
 506       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_SNORM16);
 507       /* FALLTHROUGH */
 508    case GL_RGBA16_SNORM:
 509       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SNORM16);
 510       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 511       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 512       break;
 513    case GL_ALPHA16_SNORM:
 514       RETURN_IF_SUPPORTED(MESA_FORMAT_A_SNORM16);
 515       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SNORM16);
 516       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 517       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 518       break;
 519    case GL_LUMINANCE16_SNORM:
 520       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SNORM16);
 521       /* FALLTHROUGH */
 522    case GL_LUMINANCE16_ALPHA16_SNORM:
 523       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_SNORM16);
 524       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SNORM16);
 525       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 526       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 527       break;
 528    case GL_INTENSITY16_SNORM:
 529       RETURN_IF_SUPPORTED(MESA_FORMAT_I_SNORM16);
 530       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SNORM16);
 531       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 532       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 533       break;
 534
 535    case GL_SRGB_EXT:
 536    case GL_SRGB8_EXT:
 537       /* there is no MESA_FORMAT_RGB_SRGB8 */
 538       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8X8_SRGB);
 539       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SRGB);
 540
 541       RETURN_IF_SUPPORTED(MESA_FORMAT_BGR_SRGB8);
 542       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 543       break;
 544    case GL_SRGB_ALPHA_EXT:
 545    case GL_SRGB8_ALPHA8_EXT:
 546       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SRGB);
 547
 548       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SRGB);
 549       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 550       break;
 551    case GL_SLUMINANCE_EXT:
 552    case GL_SLUMINANCE8_EXT:
 553       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SRGB8);
 554       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 555       break;
 556    case GL_SLUMINANCE_ALPHA_EXT:
 557    case GL_SLUMINANCE8_ALPHA8_EXT:
 558       RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_SRGB);
 559       RETURN_IF_SUPPORTED(MESA_FORMAT_A8L8_SRGB);
 560       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 561       break;
 562    case GL_COMPRESSED_SLUMINANCE_EXT:
 563       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SRGB8);
 564       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 565       break;
 566    case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
 567       RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_SRGB);
 568       RETURN_IF_SUPPORTED(MESA_FORMAT_A8L8_SRGB);
 569       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 570       break;
 571    case GL_COMPRESSED_SRGB_EXT:
 572       if (ctx->Mesa_DXTn)
 573          RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
 574       RETURN_IF_SUPPORTED(MESA_FORMAT_BGR_SRGB8);
 575       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 576       break;
 577    case GL_COMPRESSED_SRGB_ALPHA_EXT:
 578       if (ctx->Mesa_DXTn)
 579          RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3); /* Not srgba_dxt1, see spec */
 580       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SRGB);
 581       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 582       break;
 583
 584    case GL_ALPHA8UI_EXT:
 585       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UINT8);
 586       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 587       break;
 588    case GL_ALPHA16UI_EXT:
 589       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UINT16);
 590       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 591       break;
 592    case GL_ALPHA32UI_EXT:
 593       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UINT32);
 594       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 595       break;
 596    case GL_ALPHA8I_EXT:
 597       RETURN_IF_SUPPORTED(MESA_FORMAT_A_SINT8);
 598       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT8);
 599       break;
 600    case GL_ALPHA16I_EXT:
 601       RETURN_IF_SUPPORTED(MESA_FORMAT_A_SINT16);
 602       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT16);
 603       break;
 604    case GL_ALPHA32I_EXT:
 605       RETURN_IF_SUPPORTED(MESA_FORMAT_A_SINT32);
 606       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT32);
 607       break;
 608    case GL_LUMINANCE8UI_EXT:
 609       RETURN_IF_SUPPORTED(MESA_FORMAT_L_UINT8);
 610       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 611       break;
 612    case GL_LUMINANCE16UI_EXT:
 613       RETURN_IF_SUPPORTED(MESA_FORMAT_L_UINT16);
 614       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 615       break;
 616    case GL_LUMINANCE32UI_EXT:
 617       RETURN_IF_SUPPORTED(MESA_FORMAT_L_UINT32);
 618       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 619       break;
 620    case GL_LUMINANCE8I_EXT:
 621       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SINT8);
 622       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT8);
 623       break;
 624    case GL_LUMINANCE16I_EXT:
 625       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SINT16);
 626       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT16);
 627       break;
 628    case GL_LUMINANCE32I_EXT:
 629       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SINT32);
 630       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT32);
 631       break;
 632    case GL_LUMINANCE_ALPHA8UI_EXT:
 633       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UINT8);
 634       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 635       break;
 636    case GL_LUMINANCE_ALPHA16UI_EXT:
 637       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UINT16);
 638       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 639       break;
 640    case GL_LUMINANCE_ALPHA32UI_EXT:
 641       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UINT32);
 642       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 643       break;
 644    case GL_LUMINANCE_ALPHA8I_EXT:
 645       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_SINT8);
 646       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT8);
 647       break;
 648    case GL_LUMINANCE_ALPHA16I_EXT:
 649       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_SINT16);
 650       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT16);
 651       break;
 652    case GL_LUMINANCE_ALPHA32I_EXT:
 653       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_SINT32);
 654       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT32);
 655       break;
 656    case GL_INTENSITY8UI_EXT:
 657       RETURN_IF_SUPPORTED(MESA_FORMAT_I_UINT8);
 658       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 659       break;
 660    case GL_INTENSITY16UI_EXT:
 661       RETURN_IF_SUPPORTED(MESA_FORMAT_I_UINT16);
 662       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 663       break;
 664    case GL_INTENSITY32UI_EXT:
 665       RETURN_IF_SUPPORTED(MESA_FORMAT_I_UINT32);
 666       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 667       break;
 668    case GL_INTENSITY8I_EXT:
 669       RETURN_IF_SUPPORTED(MESA_FORMAT_I_SINT8);
 670       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT8);
 671       break;
 672    case GL_INTENSITY16I_EXT:
 673       RETURN_IF_SUPPORTED(MESA_FORMAT_I_SINT16);
 674       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT16);
 675       break;
 676    case GL_INTENSITY32I_EXT:
 677       RETURN_IF_SUPPORTED(MESA_FORMAT_I_SINT32);
 678       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT32);
 679       break;
 680
 681    case GL_RGB8UI_EXT:
 682       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT8);
 683       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_UINT8);
 684       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 685       break;
 686    case GL_RGB16UI_EXT:
 687       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT16);
 688       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_UINT16);
 689       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 690       break;
 691    case GL_RGB32UI_EXT:
 692       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT32);
 693       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_UINT32);
 694       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 695       break;
 696    case GL_RGB8I_EXT:
 697       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_SINT8);
 698       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_SINT8);
 699       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT8);
 700       break;
 701    case GL_RGB16I_EXT:
 702       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_SINT16);
 703       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_SINT16);
 704       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT16);
 705       break;
 706    case GL_RGB32I_EXT:
 707       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_SINT32);
 708       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_SINT32);
 709       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT32);
 710       break;
 711    case GL_RGBA8UI_EXT:
 712       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 713       break;
 714    case GL_RGBA16UI_EXT:
 715       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 716       break;
 717    case GL_RGBA32UI_EXT:
 718       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 719       break;
 720    case GL_RGBA8I_EXT:
 721       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT8);
 722       break;
 723    case GL_RGBA16I_EXT:
 724       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT16);
 725       break;
 726    case GL_RGBA32I_EXT:
 727       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT32);
 728       break;
 729
 730    case GL_R8:
 731    case GL_RED:
 732       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UNORM8);
 733       break;
 734
 735    case GL_COMPRESSED_RED:
 736       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
 737          RETURN_IF_SUPPORTED(MESA_FORMAT_R_RGTC1_UNORM);
 738       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UNORM8);
 739       break;
 740
 741    case GL_R16:
 742       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UNORM16);
 743       break;
 744
 745    case GL_RG:
 746    case GL_RG8:
 747       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8_UNORM);
 748       break;
 749
 750    case GL_COMPRESSED_RG:
 751       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
 752          RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2_UNORM);
 753       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8_UNORM);
 754       break;
 755
 756    case GL_RG16:
 757       RETURN_IF_SUPPORTED(MESA_FORMAT_R16G16_UNORM);
 758       break;
 759
 760    case GL_R16F:
 761       RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
 762       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
 763       RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
 764       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
 765       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 766       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 767       break;
 768    case GL_R32F:
 769       RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
 770       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
 771       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 772       RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
 773       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
 774       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 775       break;
 776    case GL_RG16F:
 777       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
 778       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
 779       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 780       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 781       break;
 782    case GL_RG32F:
 783       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
 784       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 785       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
 786       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 787       break;
 788
 789    case GL_R8UI:
 790       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT8);
 791       break;
 792    case GL_RG8UI:
 793       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT8);
 794       break;
 795    case GL_R16UI:
 796       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT16);
 797       break;
 798    case GL_RG16UI:
 799       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT16);
 800       break;
 801    case GL_R32UI:
 802       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT32);
 803       break;
 804    case GL_RG32UI:
 805       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT32);
 806       break;
 807    case GL_R8I:
 808       RETURN_IF_SUPPORTED(MESA_FORMAT_R_SINT8);
 809       break;
 810    case GL_RG8I:
 811       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_SINT8);
 812       break;
 813    case GL_R16I:
 814       RETURN_IF_SUPPORTED(MESA_FORMAT_R_SINT16);
 815       break;
 816    case GL_RG16I:
 817       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_SINT16);
 818       break;
 819    case GL_R32I:
 820       RETURN_IF_SUPPORTED(MESA_FORMAT_R_SINT32);
 821       break;
 822    case GL_RG32I:
 823       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_SINT32);
 824       break;
 825
 826    case GL_RGB10_A2UI:
 827       RETURN_IF_SUPPORTED(MESA_FORMAT_B10G10R10A2_UINT);
 828       RETURN_IF_SUPPORTED(MESA_FORMAT_R10G10B10A2_UINT);
 829       break;
 830
 831    case GL_BGRA:
 832       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
 833       break;
 834    }
 835
 836    _mesa_problem(ctx, "unexpected format %s in _mesa_choose_tex_format()",
 837                  _mesa_lookup_enum_by_nr(internalFormat));
 838    return MESA_FORMAT_NONE;
 839 }
 840
 841 GLboolean
 842 _mesa_tex_target_is_array(GLenum target)
 843 {
 844    switch (target) {
 845    case GL_TEXTURE_1D_ARRAY_EXT:
 846    case GL_TEXTURE_2D_ARRAY_EXT:
 847    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 848    case GL_TEXTURE_CUBE_MAP_ARRAY:
 849       return GL_TRUE;
 850    default:
 851       return GL_FALSE;
 852    }
 853 }