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 gl_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 gl_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_ARGB4444);
  74       } else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
  75          RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
  76       } else if (type == GL_UNSIGNED_INT_2_10_10_10_REV) {
  77          RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010);
  78       }
  79       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
  80       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
  81       break;
  82
  83    case GL_RGBA8:
  84       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
  85       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
  86       break;
  87    case GL_RGB5_A1:
  88       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
  89       break;
  90    case GL_RGBA2:
  91       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444_REV); /* just to test another format*/
  92       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
  93       break;
  94    case GL_RGBA4:
  95       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
  96       break;
  97
  98    /* deep RGBA formats */
  99    case GL_RGB10_A2:
 100       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010);
 101       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
 102       break;
 103    case GL_RGBA12:
 104    case GL_RGBA16:
 105       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
 106       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
 107       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
 108       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
 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_ARGB2101010);
 116       }
 117       /* fallthrough */
 118    case GL_RGB8:
 119       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
 120       RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
 121       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
 122       break;
 123    case GL_R3_G3_B2:
 124       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB332);
 125       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
 126       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565_REV);
 127       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
 128       RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
 129       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
 130       break;
 131    case GL_RGB4:
 132       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565_REV); /* just to test another format */
 133       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
 134       break;
 135    case GL_RGB5:
 136       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
 137       break;
 138
 139    /* deep RGB formats */
 140    case GL_RGB10:
 141    case GL_RGB12:
 142    case GL_RGB16:
 143       RETURN_IF_SUPPORTED(MESA_FORMAT_XBGR16161616_UNORM);
 144       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
 145       RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
 146       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
 147       break;
 148
 149    /* Alpha formats */
 150    case GL_ALPHA:
 151    case GL_ALPHA4:
 152    case GL_ALPHA8:
 153       RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
 154       break;
 155
 156    case GL_ALPHA12:
 157    case GL_ALPHA16:
 158       RETURN_IF_SUPPORTED(MESA_FORMAT_A16);
 159       RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
 160       break;
 161
 162    /* Luminance formats */
 163    case 1:
 164    case GL_LUMINANCE:
 165    case GL_LUMINANCE4:
 166    case GL_LUMINANCE8:
 167       RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
 168       break;
 169
 170    case GL_LUMINANCE12:
 171    case GL_LUMINANCE16:
 172       RETURN_IF_SUPPORTED(MESA_FORMAT_L16);
 173       RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
 174       break;
 175
 176       /* Luminance/Alpha formats */
 177    case GL_LUMINANCE4_ALPHA4:
 178       RETURN_IF_SUPPORTED(MESA_FORMAT_AL44);
 179       RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
 180       break;
 181
 182    case 2:
 183    case GL_LUMINANCE_ALPHA:
 184    case GL_LUMINANCE6_ALPHA2:
 185    case GL_LUMINANCE8_ALPHA8:
 186       RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
 187       break;
 188
 189    case GL_LUMINANCE12_ALPHA4:
 190    case GL_LUMINANCE12_ALPHA12:
 191    case GL_LUMINANCE16_ALPHA16:
 192       RETURN_IF_SUPPORTED(MESA_FORMAT_AL1616);
 193       RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
 194       break;
 195
 196    case GL_INTENSITY:
 197    case GL_INTENSITY4:
 198    case GL_INTENSITY8:
 199       RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
 200       break;
 201
 202    case GL_INTENSITY12:
 203    case GL_INTENSITY16:
 204       RETURN_IF_SUPPORTED(MESA_FORMAT_I16);
 205       RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
 206       break;
 207
 208    case GL_DEPTH_COMPONENT:
 209    case GL_DEPTH_COMPONENT24:
 210    case GL_DEPTH_COMPONENT32:
 211       RETURN_IF_SUPPORTED(MESA_FORMAT_Z32);
 212       RETURN_IF_SUPPORTED(MESA_FORMAT_X8_Z24);
 213       RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
 214       break;
 215    case GL_DEPTH_COMPONENT16:
 216       RETURN_IF_SUPPORTED(MESA_FORMAT_Z16);
 217       RETURN_IF_SUPPORTED(MESA_FORMAT_X8_Z24);
 218       RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
 219       break;
 220
 221    case GL_COMPRESSED_ALPHA_ARB:
 222       RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
 223       break;
 224    case GL_COMPRESSED_LUMINANCE_ARB:
 225       RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
 226       break;
 227    case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
 228       RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
 229       break;
 230    case GL_COMPRESSED_INTENSITY_ARB:
 231       RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
 232       break;
 233    case GL_COMPRESSED_RGB_ARB:
 234       /* We don't use texture compression for 1D and 1D array textures.
 235        * For 1D textures, compressions doesn't buy us much.
 236        * For 1D ARRAY textures, there's complicated issues with updating
 237        * sub-regions on non-block boundaries with glCopyTexSubImage, among
 238        * other issues.  FWIW, the GL_EXT_texture_array extension prohibits
 239        * 1D ARRAY textures in S3TC format.
 240        */
 241       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) {
 242          RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
 243          RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
 244       }
 245       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
 246       RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
 247       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
 248       break;
 249    case GL_COMPRESSED_RGBA_ARB:
 250       /* We don't use texture compression for 1D and 1D array textures. */
 251       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) {
 252          RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3); /* Not rgba_dxt1, see spec */
 253          RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
 254       }
 255       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
 256       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
 257       break;
 258
 259    case GL_RGB565:
 260       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
 261       break;
 262
 263    case GL_YCBCR_MESA:
 264       if (type == GL_UNSIGNED_SHORT_8_8_MESA)
 265          RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR);
 266       else
 267          RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR_REV);
 268       break;
 269
 270    /* For non-generic compressed format we assert two things:
 271     *
 272     * 1. The format has already been validated against the set of available
 273     *    extensions.
 274     *
 275     * 2. The driver only enables the extension if it supports all of the
 276     *    formats that are part of that extension.
 277     */
 278    case GL_COMPRESSED_RGB_FXT1_3DFX:
 279       return MESA_FORMAT_RGB_FXT1;
 280    case GL_COMPRESSED_RGBA_FXT1_3DFX:
 281       return MESA_FORMAT_RGBA_FXT1;
 282    case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
 283    case GL_RGB_S3TC:
 284    case GL_RGB4_S3TC:
 285       return MESA_FORMAT_RGB_DXT1;
 286    case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
 287       return MESA_FORMAT_RGBA_DXT1;
 288    case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
 289    case GL_RGBA_S3TC:
 290    case GL_RGBA4_S3TC:
 291       return MESA_FORMAT_RGBA_DXT3;
 292    case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
 293       return MESA_FORMAT_RGBA_DXT5;
 294    case GL_COMPRESSED_RED_RGTC1:
 295       return MESA_FORMAT_RED_RGTC1;
 296    case GL_COMPRESSED_SIGNED_RED_RGTC1:
 297       return MESA_FORMAT_SIGNED_RED_RGTC1;
 298    case GL_COMPRESSED_RG_RGTC2:
 299       return MESA_FORMAT_RG_RGTC2;
 300    case GL_COMPRESSED_SIGNED_RG_RGTC2:
 301       return MESA_FORMAT_SIGNED_RG_RGTC2;
 302    case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
 303       return MESA_FORMAT_L_LATC1;
 304    case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
 305       return MESA_FORMAT_SIGNED_L_LATC1;
 306    case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
 307       return MESA_FORMAT_LA_LATC2;
 308    case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
 309       return MESA_FORMAT_SIGNED_LA_LATC2;
 310    case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
 311       return MESA_FORMAT_LA_LATC2;
 312    case GL_ETC1_RGB8_OES:
 313       return MESA_FORMAT_ETC1_RGB8;
 314    case GL_COMPRESSED_RGB8_ETC2:
 315       return MESA_FORMAT_ETC2_RGB8;
 316    case GL_COMPRESSED_SRGB8_ETC2:
 317       return MESA_FORMAT_ETC2_SRGB8;
 318    case GL_COMPRESSED_RGBA8_ETC2_EAC:
 319       return MESA_FORMAT_ETC2_RGBA8_EAC;
 320    case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
 321       return MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC;
 322    case GL_COMPRESSED_R11_EAC:
 323       return MESA_FORMAT_ETC2_R11_EAC;
 324    case GL_COMPRESSED_RG11_EAC:
 325       return MESA_FORMAT_ETC2_RG11_EAC;
 326    case GL_COMPRESSED_SIGNED_R11_EAC:
 327       return MESA_FORMAT_ETC2_SIGNED_R11_EAC;
 328    case GL_COMPRESSED_SIGNED_RG11_EAC:
 329       return MESA_FORMAT_ETC2_SIGNED_RG11_EAC;
 330    case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
 331       return MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1;
 332    case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
 333       return MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1;
 334    case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
 335       return MESA_FORMAT_SRGB_DXT1;
 336    case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
 337       return MESA_FORMAT_SRGBA_DXT1;
 338    case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
 339       return MESA_FORMAT_SRGBA_DXT3;
 340    case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
 341       return MESA_FORMAT_SRGBA_DXT5;
 342
 343    case GL_ALPHA16F_ARB:
 344       RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
 345       RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
 346       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 347       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 348       break;
 349    case GL_ALPHA32F_ARB:
 350       RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
 351       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 352       RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
 353       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 354       break;
 355    case GL_LUMINANCE16F_ARB:
 356       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
 357       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
 358       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 359       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 360       break;
 361    case GL_LUMINANCE32F_ARB:
 362       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
 363       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 364       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
 365       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 366       break;
 367    case GL_LUMINANCE_ALPHA16F_ARB:
 368       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
 369       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
 370       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 371       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 372       break;
 373    case GL_LUMINANCE_ALPHA32F_ARB:
 374       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
 375       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 376       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
 377       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 378       break;
 379    case GL_INTENSITY16F_ARB:
 380       RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
 381       RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
 382       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 383       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 384       break;
 385    case GL_INTENSITY32F_ARB:
 386       RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
 387       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 388       RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
 389       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 390       break;
 391    case GL_RGB16F_ARB:
 392       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
 393       RETURN_IF_SUPPORTED(MESA_FORMAT_XBGR16161616_FLOAT);
 394       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 395       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
 396       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 397       break;
 398    case GL_RGB32F_ARB:
 399       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
 400       RETURN_IF_SUPPORTED(MESA_FORMAT_XBGR32323232_FLOAT);
 401       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 402       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
 403       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 404       break;
 405    case GL_RGBA16F_ARB:
 406       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 407       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 408       break;
 409    case GL_RGBA32F_ARB:
 410       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 411       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 412       break;
 413
 414    case GL_RGB9_E5:
 415       /* GL_EXT_texture_shared_exponent -- just one format to support */
 416       ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_RGB9_E5_FLOAT]);
 417       return MESA_FORMAT_RGB9_E5_FLOAT;
 418
 419    case GL_R11F_G11F_B10F:
 420       /* GL_EXT_texture_packed_float -- just one format to support */
 421       ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R11_G11_B10_FLOAT]);
 422       return MESA_FORMAT_R11_G11_B10_FLOAT;
 423
 424    case GL_DEPTH_STENCIL_EXT:
 425    case GL_DEPTH24_STENCIL8_EXT:
 426       RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_S8);
 427       RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
 428       break;
 429
 430    case GL_DEPTH_COMPONENT32F:
 431       ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT]);
 432       return MESA_FORMAT_Z32_FLOAT;
 433    case GL_DEPTH32F_STENCIL8:
 434       ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_X24S8]);
 435       return MESA_FORMAT_Z32_FLOAT_X24S8;
 436
 437    case GL_DUDV_ATI:
 438    case GL_DU8DV8_ATI:
 439       RETURN_IF_SUPPORTED(MESA_FORMAT_DUDV8);
 440       break;
 441
 442    case GL_RED_SNORM:
 443    case GL_R8_SNORM:
 444       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R8);
 445       break;
 446    case GL_RG_SNORM:
 447    case GL_RG8_SNORM:
 448       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG88_REV);
 449       break;
 450    case GL_RGB_SNORM:
 451    case GL_RGB8_SNORM:
 452       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
 453       /* FALLTHROUGH */
 454    case GL_RGBA_SNORM:
 455    case GL_RGBA8_SNORM:
 456       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
 457       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
 458       break;
 459    case GL_ALPHA_SNORM:
 460    case GL_ALPHA8_SNORM:
 461       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A8);
 462       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
 463       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
 464       break;
 465    case GL_LUMINANCE_SNORM:
 466    case GL_LUMINANCE8_SNORM:
 467       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L8);
 468       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
 469       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
 470       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
 471       break;
 472    case GL_LUMINANCE_ALPHA_SNORM:
 473    case GL_LUMINANCE8_ALPHA8_SNORM:
 474       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL88);
 475       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
 476       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
 477       break;
 478    case GL_INTENSITY_SNORM:
 479    case GL_INTENSITY8_SNORM:
 480       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I8);
 481       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
 482       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
 483       break;
 484    case GL_R16_SNORM:
 485       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R16);
 486       break;
 487    case GL_RG16_SNORM:
 488       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_GR1616);
 489       break;
 490    case GL_RGB16_SNORM:
 491       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGB_16);
 492       RETURN_IF_SUPPORTED(MESA_FORMAT_XBGR16161616_SNORM);
 493       /* FALLTHROUGH */
 494    case GL_RGBA16_SNORM:
 495       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
 496       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
 497       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
 498       break;
 499    case GL_ALPHA16_SNORM:
 500       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A16);
 501       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
 502       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
 503       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
 504       break;
 505    case GL_LUMINANCE16_SNORM:
 506       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L16);
 507       /* FALLTHROUGH */
 508    case GL_LUMINANCE16_ALPHA16_SNORM:
 509       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL1616);
 510       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
 511       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
 512       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
 513       break;
 514    case GL_INTENSITY16_SNORM:
 515       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I16);
 516       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
 517       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
 518       RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
 519       break;
 520
 521    case GL_SRGB_EXT:
 522    case GL_SRGB8_EXT:
 523       RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
 524       RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
 525       break;
 526    case GL_SRGB_ALPHA_EXT:
 527    case GL_SRGB8_ALPHA8_EXT:
 528       RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
 529       RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
 530       break;
 531    case GL_SLUMINANCE_EXT:
 532    case GL_SLUMINANCE8_EXT:
 533       RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
 534       RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
 535       break;
 536    case GL_SLUMINANCE_ALPHA_EXT:
 537    case GL_SLUMINANCE8_ALPHA8_EXT:
 538       RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
 539       RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
 540       break;
 541    case GL_COMPRESSED_SLUMINANCE_EXT:
 542       RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
 543       RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
 544       break;
 545    case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
 546       RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
 547       RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
 548       break;
 549    case GL_COMPRESSED_SRGB_EXT:
 550       RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
 551       RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
 552       RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
 553       break;
 554    case GL_COMPRESSED_SRGB_ALPHA_EXT:
 555       RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3); /* Not srgba_dxt1, see spec */
 556       RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
 557       RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
 558       break;
 559
 560    case GL_ALPHA8UI_EXT:
 561       RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT8);
 562       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 563       break;
 564    case GL_ALPHA16UI_EXT:
 565       RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT16);
 566       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 567       break;
 568    case GL_ALPHA32UI_EXT:
 569       RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT32);
 570       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 571       break;
 572    case GL_ALPHA8I_EXT:
 573       RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT8);
 574       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
 575       break;
 576    case GL_ALPHA16I_EXT:
 577       RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT16);
 578       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
 579       break;
 580    case GL_ALPHA32I_EXT:
 581       RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT32);
 582       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
 583       break;
 584    case GL_LUMINANCE8UI_EXT:
 585       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT8);
 586       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 587       break;
 588    case GL_LUMINANCE16UI_EXT:
 589       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT16);
 590       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 591       break;
 592    case GL_LUMINANCE32UI_EXT:
 593       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT32);
 594       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 595       break;
 596    case GL_LUMINANCE8I_EXT:
 597       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT8);
 598       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
 599       break;
 600    case GL_LUMINANCE16I_EXT:
 601       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT16);
 602       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
 603       break;
 604    case GL_LUMINANCE32I_EXT:
 605       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT32);
 606       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
 607       break;
 608    case GL_LUMINANCE_ALPHA8UI_EXT:
 609       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT8);
 610       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 611       break;
 612    case GL_LUMINANCE_ALPHA16UI_EXT:
 613       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT16);
 614       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 615       break;
 616    case GL_LUMINANCE_ALPHA32UI_EXT:
 617       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT32);
 618       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 619       break;
 620    case GL_LUMINANCE_ALPHA8I_EXT:
 621       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT8);
 622       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
 623       break;
 624    case GL_LUMINANCE_ALPHA16I_EXT:
 625       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT16);
 626       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
 627       break;
 628    case GL_LUMINANCE_ALPHA32I_EXT:
 629       RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT32);
 630       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
 631       break;
 632    case GL_INTENSITY8UI_EXT:
 633       RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT8);
 634       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 635       break;
 636    case GL_INTENSITY16UI_EXT:
 637       RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT16);
 638       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 639       break;
 640    case GL_INTENSITY32UI_EXT:
 641       RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT32);
 642       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 643       break;
 644    case GL_INTENSITY8I_EXT:
 645       RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT8);
 646       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
 647       break;
 648    case GL_INTENSITY16I_EXT:
 649       RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT16);
 650       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
 651       break;
 652    case GL_INTENSITY32I_EXT:
 653       RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT32);
 654       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
 655       break;
 656
 657    case GL_RGB8UI_EXT:
 658       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT8);
 659       RETURN_IF_SUPPORTED(MESA_FORMAT_XBGR8888_UINT);
 660       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 661       break;
 662    case GL_RGB16UI_EXT:
 663       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT16);
 664       RETURN_IF_SUPPORTED(MESA_FORMAT_XBGR16161616_UINT);
 665       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 666       break;
 667    case GL_RGB32UI_EXT:
 668       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT32);
 669       RETURN_IF_SUPPORTED(MESA_FORMAT_XBGR32323232_UINT);
 670       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 671       break;
 672    case GL_RGB8I_EXT:
 673       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT8);
 674       RETURN_IF_SUPPORTED(MESA_FORMAT_XBGR8888_SINT);
 675       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
 676       break;
 677    case GL_RGB16I_EXT:
 678       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT16);
 679       RETURN_IF_SUPPORTED(MESA_FORMAT_XBGR16161616_SINT);
 680       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
 681       break;
 682    case GL_RGB32I_EXT:
 683       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT32);
 684       RETURN_IF_SUPPORTED(MESA_FORMAT_XBGR32323232_SINT);
 685       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
 686       break;
 687    case GL_RGBA8UI_EXT:
 688       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
 689       break;
 690    case GL_RGBA16UI_EXT:
 691       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
 692       break;
 693    case GL_RGBA32UI_EXT:
 694       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
 695       break;
 696    case GL_RGBA8I_EXT:
 697       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
 698       break;
 699    case GL_RGBA16I_EXT:
 700       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
 701       break;
 702    case GL_RGBA32I_EXT:
 703       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
 704       break;
 705
 706    case GL_R8:
 707    case GL_RED:
 708       RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
 709       break;
 710
 711    case GL_COMPRESSED_RED:
 712       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
 713          RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
 714       RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
 715       break;
 716
 717    case GL_R16:
 718       RETURN_IF_SUPPORTED(MESA_FORMAT_R16);
 719       break;
 720
 721    case GL_RG:
 722    case GL_RG8:
 723       RETURN_IF_SUPPORTED(MESA_FORMAT_GR88);
 724       break;
 725
 726    case GL_COMPRESSED_RG:
 727       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
 728          RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
 729       RETURN_IF_SUPPORTED(MESA_FORMAT_GR88);
 730       break;
 731
 732    case GL_RG16:
 733       RETURN_IF_SUPPORTED(MESA_FORMAT_GR1616);
 734       break;
 735
 736    case GL_R16F:
 737       RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
 738       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
 739       RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
 740       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
 741       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 742       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 743       break;
 744    case GL_R32F:
 745       RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
 746       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
 747       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 748       RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
 749       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
 750       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 751       break;
 752    case GL_RG16F:
 753       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
 754       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
 755       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 756       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 757       break;
 758    case GL_RG32F:
 759       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
 760       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 761       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
 762       RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 763       break;
 764
 765    case GL_R8UI:
 766       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT8);
 767       break;
 768    case GL_RG8UI:
 769       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT8);
 770       break;
 771    case GL_R16UI:
 772       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT16);
 773       break;
 774    case GL_RG16UI:
 775       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT16);
 776       break;
 777    case GL_R32UI:
 778       RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT32);
 779       break;
 780    case GL_RG32UI:
 781       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT32);
 782       break;
 783    case GL_R8I:
 784       RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT8);
 785       break;
 786    case GL_RG8I:
 787       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT8);
 788       break;
 789    case GL_R16I:
 790       RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT16);
 791       break;
 792    case GL_RG16I:
 793       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT16);
 794       break;
 795    case GL_R32I:
 796       RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT32);
 797       break;
 798    case GL_RG32I:
 799       RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT32);
 800       break;
 801
 802    case GL_RGB10_A2UI:
 803       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010_UINT);
 804       RETURN_IF_SUPPORTED(MESA_FORMAT_ABGR2101010_UINT);
 805       break;
 806
 807    case GL_BGRA:
 808       RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
 809       break;
 810    }
 811
 812    _mesa_problem(ctx, "unexpected format %s in _mesa_choose_tex_format()",
 813                  _mesa_lookup_enum_by_nr(internalFormat));
 814    return MESA_FORMAT_NONE;
 815 }
 816
 817 GLboolean
 818 _mesa_tex_target_is_array(GLenum target)
 819 {
 820    switch (target) {
 821    case GL_TEXTURE_1D_ARRAY_EXT:
 822    case GL_TEXTURE_2D_ARRAY_EXT:
 823    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 824    case GL_TEXTURE_CUBE_MAP_ARRAY:
 825       return GL_TRUE;
 826    default:
 827       return GL_FALSE;
 828    }
 829 }