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
 349    case GL_ALPHA16F_ARB:
 350       RETURN_IF_SUPPORTED(MESA_FORMAT_A_FLOAT16);
 351       RETURN_IF_SUPPORTED(MESA_FORMAT_A_FLOAT32);
 352       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 353       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 354       break;
 355    case GL_ALPHA32F_ARB:
 356       RETURN_IF_SUPPORTED(MESA_FORMAT_A_FLOAT32);
 357       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 358       RETURN_IF_SUPPORTED(MESA_FORMAT_A_FLOAT16);
 359       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 360       break;
 361    case GL_LUMINANCE16F_ARB:
 362       RETURN_IF_SUPPORTED(MESA_FORMAT_L_FLOAT16);
 363       RETURN_IF_SUPPORTED(MESA_FORMAT_L_FLOAT32);
 364       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 365       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 366       break;
 367    case GL_LUMINANCE32F_ARB:
 368       RETURN_IF_SUPPORTED(MESA_FORMAT_L_FLOAT32);
 369       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 370       RETURN_IF_SUPPORTED(MESA_FORMAT_L_FLOAT16);
 371       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 372       break;
 373    case GL_LUMINANCE_ALPHA16F_ARB:
 374       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_FLOAT16);
 375       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_FLOAT32);
 376       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 377       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 378       break;
 379    case GL_LUMINANCE_ALPHA32F_ARB:
 380       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_FLOAT32);
 381       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 382       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_FLOAT16);
 383       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 384       break;
 385    case GL_INTENSITY16F_ARB:
 386       RETURN_IF_SUPPORTED(MESA_FORMAT_I_FLOAT16);
 387       RETURN_IF_SUPPORTED(MESA_FORMAT_I_FLOAT32);
 388       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 389       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 390       break;
 391    case GL_INTENSITY32F_ARB:
 392       RETURN_IF_SUPPORTED(MESA_FORMAT_I_FLOAT32);
 393       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 394       RETURN_IF_SUPPORTED(MESA_FORMAT_I_FLOAT16);
 395       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 396       break;
 397    case GL_RGB16F_ARB:
 398       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
 399       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_FLOAT16);
 400       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 401       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
 402       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 403       break;
 404    case GL_RGB32F_ARB:
 405       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
 406       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_FLOAT32);
 407       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 408       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
 409       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 410       break;
 411    case GL_RGBA16F_ARB:
 412       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 413       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 414       break;
 415    case GL_RGBA32F_ARB:
 416       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 417       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 418       break;
 419
 420    case GL_RGB9_E5:
 421       /* GL_EXT_texture_shared_exponent -- just one format to support */
 422       ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R9G9B9E5_FLOAT]);
 423       return MESA_FORMAT_R9G9B9E5_FLOAT;
 424
 425    case GL_R11F_G11F_B10F:
 426       /* GL_EXT_texture_packed_float -- just one format to support */
 427       ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R11G11B10_FLOAT]);
 428       return MESA_FORMAT_R11G11B10_FLOAT;
 429
 430    case GL_DEPTH_STENCIL_EXT:
 431    case GL_DEPTH24_STENCIL8_EXT:
 432       RETURN_IF_SUPPORTED(MESA_FORMAT_S8_UINT_Z24_UNORM);
 433       RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_UNORM_S8_UINT);
 434       break;
 435
 436    case GL_DEPTH_COMPONENT32F:
 437       ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z_FLOAT32]);
 438       return MESA_FORMAT_Z_FLOAT32;
 439    case GL_DEPTH32F_STENCIL8:
 440       ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_S8X24_UINT]);
 441       return MESA_FORMAT_Z32_FLOAT_S8X24_UINT;
 442
 443    case GL_DUDV_ATI:
 444    case GL_DU8DV8_ATI:
 445       RETURN_IF_SUPPORTED(MESA_FORMAT_DUDV8);
 446       break;
 447
 448    case GL_RED_SNORM:
 449    case GL_R8_SNORM:
 450       RETURN_IF_SUPPORTED(MESA_FORMAT_R_SNORM8);
 451       break;
 452    case GL_RG_SNORM:
 453    case GL_RG8_SNORM:
 454       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8_SNORM);
 455       break;
 456    case GL_RGB_SNORM:
 457    case GL_RGB8_SNORM:
 458       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8X8_SNORM);
 459       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 460       RETURN_IF_SUPPORTED(MESA_FORMAT_X8B8G8R8_SNORM);
 461       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 462       break;
 463    case GL_RGBA_SNORM:
 464    case GL_RGBA8_SNORM:
 465       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 466       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 467       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 468       break;
 469    case GL_ALPHA_SNORM:
 470    case GL_ALPHA8_SNORM:
 471       RETURN_IF_SUPPORTED(MESA_FORMAT_A_SNORM8);
 472       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 473       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 474       break;
 475    case GL_LUMINANCE_SNORM:
 476    case GL_LUMINANCE8_SNORM:
 477       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SNORM8);
 478       RETURN_IF_SUPPORTED(MESA_FORMAT_X8B8G8R8_SNORM);
 479       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 480       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 481       break;
 482    case GL_LUMINANCE_ALPHA_SNORM:
 483    case GL_LUMINANCE8_ALPHA8_SNORM:
 484       RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_SNORM);
 485       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 486       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 487       break;
 488    case GL_INTENSITY_SNORM:
 489    case GL_INTENSITY8_SNORM:
 490       RETURN_IF_SUPPORTED(MESA_FORMAT_I_SNORM8);
 491       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 492       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 493       break;
 494    case GL_R16_SNORM:
 495       RETURN_IF_SUPPORTED(MESA_FORMAT_R_SNORM16);
 496       break;
 497    case GL_RG16_SNORM:
 498       RETURN_IF_SUPPORTED(MESA_FORMAT_R16G16_SNORM);
 499       break;
 500    case GL_RGB16_SNORM:
 501       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_SNORM16);
 502       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_SNORM16);
 503       /* FALLTHROUGH */
 504    case GL_RGBA16_SNORM:
 505       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SNORM16);
 506       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 507       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 508       break;
 509    case GL_ALPHA16_SNORM:
 510       RETURN_IF_SUPPORTED(MESA_FORMAT_A_SNORM16);
 511       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SNORM16);
 512       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 513       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 514       break;
 515    case GL_LUMINANCE16_SNORM:
 516       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SNORM16);
 517       /* FALLTHROUGH */
 518    case GL_LUMINANCE16_ALPHA16_SNORM:
 519       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_SNORM16);
 520       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SNORM16);
 521       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 522       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 523       break;
 524    case GL_INTENSITY16_SNORM:
 525       RETURN_IF_SUPPORTED(MESA_FORMAT_I_SNORM16);
 526       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SNORM16);
 527       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
 528       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
 529       break;
 530
 531    case GL_SRGB_EXT:
 532    case GL_SRGB8_EXT:
 533       /* there is no MESA_FORMAT_RGB_SRGB8 */
 534       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8X8_SRGB);
 535       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SRGB);
 536
 537       RETURN_IF_SUPPORTED(MESA_FORMAT_BGR_SRGB8);
 538       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 539       break;
 540    case GL_SRGB_ALPHA_EXT:
 541    case GL_SRGB8_ALPHA8_EXT:
 542       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SRGB);
 543
 544       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SRGB);
 545       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 546       break;
 547    case GL_SLUMINANCE_EXT:
 548    case GL_SLUMINANCE8_EXT:
 549       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SRGB8);
 550       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 551       break;
 552    case GL_SLUMINANCE_ALPHA_EXT:
 553    case GL_SLUMINANCE8_ALPHA8_EXT:
 554       RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_SRGB);
 555       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 556       break;
 557    case GL_COMPRESSED_SLUMINANCE_EXT:
 558       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SRGB8);
 559       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 560       break;
 561    case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
 562       RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_SRGB);
 563       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 564       break;
 565    case GL_COMPRESSED_SRGB_EXT:
 566       if (ctx->Mesa_DXTn)
 567          RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
 568       RETURN_IF_SUPPORTED(MESA_FORMAT_BGR_SRGB8);
 569       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 570       break;
 571    case GL_COMPRESSED_SRGB_ALPHA_EXT:
 572       if (ctx->Mesa_DXTn)
 573          RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3); /* Not srgba_dxt1, see spec */
 574       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SRGB);
 575       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
 576       break;
 577
 578    case GL_ALPHA8UI_EXT:
 579       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UINT8);
 580       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 581       break;
 582    case GL_ALPHA16UI_EXT:
 583       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UINT16);
 584       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 585       break;
 586    case GL_ALPHA32UI_EXT:
 587       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UINT32);
 588       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 589       break;
 590    case GL_ALPHA8I_EXT:
 591       RETURN_IF_SUPPORTED(MESA_FORMAT_A_SINT8);
 592       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT8);
 593       break;
 594    case GL_ALPHA16I_EXT:
 595       RETURN_IF_SUPPORTED(MESA_FORMAT_A_SINT16);
 596       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT16);
 597       break;
 598    case GL_ALPHA32I_EXT:
 599       RETURN_IF_SUPPORTED(MESA_FORMAT_A_SINT32);
 600       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT32);
 601       break;
 602    case GL_LUMINANCE8UI_EXT:
 603       RETURN_IF_SUPPORTED(MESA_FORMAT_L_UINT8);
 604       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 605       break;
 606    case GL_LUMINANCE16UI_EXT:
 607       RETURN_IF_SUPPORTED(MESA_FORMAT_L_UINT16);
 608       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 609       break;
 610    case GL_LUMINANCE32UI_EXT:
 611       RETURN_IF_SUPPORTED(MESA_FORMAT_L_UINT32);
 612       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 613       break;
 614    case GL_LUMINANCE8I_EXT:
 615       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SINT8);
 616       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT8);
 617       break;
 618    case GL_LUMINANCE16I_EXT:
 619       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SINT16);
 620       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT16);
 621       break;
 622    case GL_LUMINANCE32I_EXT:
 623       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SINT32);
 624       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT32);
 625       break;
 626    case GL_LUMINANCE_ALPHA8UI_EXT:
 627       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UINT8);
 628       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 629       break;
 630    case GL_LUMINANCE_ALPHA16UI_EXT:
 631       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UINT16);
 632       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 633       break;
 634    case GL_LUMINANCE_ALPHA32UI_EXT:
 635       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UINT32);
 636       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 637       break;
 638    case GL_LUMINANCE_ALPHA8I_EXT:
 639       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_SINT8);
 640       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT8);
 641       break;
 642    case GL_LUMINANCE_ALPHA16I_EXT:
 643       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_SINT16);
 644       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT16);
 645       break;
 646    case GL_LUMINANCE_ALPHA32I_EXT:
 647       RETURN_IF_SUPPORTED(MESA_FORMAT_LA_SINT32);
 648       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT32);
 649       break;
 650    case GL_INTENSITY8UI_EXT:
 651       RETURN_IF_SUPPORTED(MESA_FORMAT_I_UINT8);
 652       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 653       break;
 654    case GL_INTENSITY16UI_EXT:
 655       RETURN_IF_SUPPORTED(MESA_FORMAT_I_UINT16);
 656       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 657       break;
 658    case GL_INTENSITY32UI_EXT:
 659       RETURN_IF_SUPPORTED(MESA_FORMAT_I_UINT32);
 660       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 661       break;
 662    case GL_INTENSITY8I_EXT:
 663       RETURN_IF_SUPPORTED(MESA_FORMAT_I_SINT8);
 664       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT8);
 665       break;
 666    case GL_INTENSITY16I_EXT:
 667       RETURN_IF_SUPPORTED(MESA_FORMAT_I_SINT16);
 668       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT16);
 669       break;
 670    case GL_INTENSITY32I_EXT:
 671       RETURN_IF_SUPPORTED(MESA_FORMAT_I_SINT32);
 672       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT32);
 673       break;
 674
 675    case GL_RGB8UI_EXT:
 676       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT8);
 677       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_UINT8);
 678       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 679       break;
 680    case GL_RGB16UI_EXT:
 681       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT16);
 682       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_UINT16);
 683       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 684       break;
 685    case GL_RGB32UI_EXT:
 686       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT32);
 687       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_UINT32);
 688       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 689       break;
 690    case GL_RGB8I_EXT:
 691       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_SINT8);
 692       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_SINT8);
 693       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT8);
 694       break;
 695    case GL_RGB16I_EXT:
 696       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_SINT16);
 697       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_SINT16);
 698       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT16);
 699       break;
 700    case GL_RGB32I_EXT:
 701       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_SINT32);
 702       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBX_SINT32);
 703       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT32);
 704       break;
 705    case GL_RGBA8UI_EXT:
 706       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 707       break;
 708    case GL_RGBA16UI_EXT:
 709       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 710       break;
 711    case GL_RGBA32UI_EXT:
 712       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 713       break;
 714    case GL_RGBA8I_EXT:
 715       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT8);
 716       break;
 717    case GL_RGBA16I_EXT:
 718       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT16);
 719       break;
 720    case GL_RGBA32I_EXT:
 721       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_SINT32);
 722       break;
 723
 724    case GL_R8:
 725    case GL_RED:
 726       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UNORM8);
 727       break;
 728
 729    case GL_COMPRESSED_RED:
 730       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
 731          RETURN_IF_SUPPORTED(MESA_FORMAT_R_RGTC1_UNORM);
 732       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UNORM8);
 733       break;
 734
 735    case GL_R16:
 736       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UNORM16);
 737       break;
 738
 739    case GL_RG:
 740    case GL_RG8:
 741       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8_UNORM);
 742       break;
 743
 744    case GL_COMPRESSED_RG:
 745       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
 746          RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2_UNORM);
 747       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8_UNORM);
 748       break;
 749
 750    case GL_RG16:
 751       RETURN_IF_SUPPORTED(MESA_FORMAT_R16G16_UNORM);
 752       break;
 753
 754    case GL_R16F:
 755       RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
 756       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
 757       RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
 758       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
 759       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 760       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 761       break;
 762    case GL_R32F:
 763       RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
 764       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
 765       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 766       RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
 767       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
 768       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 769       break;
 770    case GL_RG16F:
 771       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
 772       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
 773       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 774       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 775       break;
 776    case GL_RG32F:
 777       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
 778       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 779       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
 780       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 781       break;
 782
 783    case GL_R8UI:
 784       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT8);
 785       break;
 786    case GL_RG8UI:
 787       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT8);
 788       break;
 789    case GL_R16UI:
 790       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT16);
 791       break;
 792    case GL_RG16UI:
 793       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT16);
 794       break;
 795    case GL_R32UI:
 796       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT32);
 797       break;
 798    case GL_RG32UI:
 799       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT32);
 800       break;
 801    case GL_R8I:
 802       RETURN_IF_SUPPORTED(MESA_FORMAT_R_SINT8);
 803       break;
 804    case GL_RG8I:
 805       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_SINT8);
 806       break;
 807    case GL_R16I:
 808       RETURN_IF_SUPPORTED(MESA_FORMAT_R_SINT16);
 809       break;
 810    case GL_RG16I:
 811       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_SINT16);
 812       break;
 813    case GL_R32I:
 814       RETURN_IF_SUPPORTED(MESA_FORMAT_R_SINT32);
 815       break;
 816    case GL_RG32I:
 817       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_SINT32);
 818       break;
 819
 820    case GL_RGB10_A2UI:
 821       RETURN_IF_SUPPORTED(MESA_FORMAT_B10G10R10A2_UINT);
 822       RETURN_IF_SUPPORTED(MESA_FORMAT_R10G10B10A2_UINT);
 823       break;
 824
 825    case GL_BGRA:
 826       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
 827       break;
 828    }
 829
 830    _mesa_problem(ctx, "unexpected format %s in _mesa_choose_tex_format()",
 831                  _mesa_lookup_enum_by_nr(internalFormat));
 832    return MESA_FORMAT_NONE;
 833 }
 834
 835 GLboolean
 836 _mesa_tex_target_is_array(GLenum target)
 837 {
 838    switch (target) {
 839    case GL_TEXTURE_1D_ARRAY_EXT:
 840    case GL_TEXTURE_2D_ARRAY_EXT:
 841    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 842    case GL_TEXTURE_CUBE_MAP_ARRAY:
 843       return GL_TRUE;
 844    default:
 845       return GL_FALSE;
 846    }
 847 }