src/mesa/state_tracker/st_format.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * Copyright (c) 2008-2010 VMware, Inc.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29
  30 /**
  31  * Mesa / Gallium format conversion and format selection code.
  32  * \author Brian Paul
  33  */
  34
  35 #include "main/imports.h"
  36 #include "main/context.h"
  37 #include "main/texstore.h"
  38 #include "main/image.h"
  39 #include "main/macros.h"
  40 #include "main/mfeatures.h"
  41
  42 #include "pipe/p_context.h"
  43 #include "pipe/p_defines.h"
  44 #include "pipe/p_screen.h"
  45 #include "util/u_format.h"
  46 #include "st_context.h"
  47 #include "st_format.h"
  48
  49
  50 static GLuint
  51 format_max_bits(enum pipe_format format)
  52 {
  53    GLuint size = util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 0);
  54
  55    size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 1));
  56    size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 2));
  57    size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 3));
  58    size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 0));
  59    size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1));
  60    return size;
  61 }
  62
  63
  64 /**
  65  * Return basic GL datatype for the given gallium format.
  66  */
  67 GLenum
  68 st_format_datatype(enum pipe_format format)
  69 {
  70    const struct util_format_description *desc;
  71    int i;
  72
  73    desc = util_format_description(format);
  74    assert(desc);
  75
  76    /* Find the first non-VOID channel. */
  77    for (i = 0; i < 4; i++) {
  78        if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
  79            break;
  80        }
  81    }
  82
  83    if (desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) {
  84       if (format == PIPE_FORMAT_B5G5R5A1_UNORM ||
  85           format == PIPE_FORMAT_B5G6R5_UNORM) {
  86          return GL_UNSIGNED_SHORT;
  87       }
  88       else if (format == PIPE_FORMAT_R11G11B10_FLOAT ||
  89                format == PIPE_FORMAT_R9G9B9E5_FLOAT) {
  90          return GL_FLOAT;
  91       }
  92       else if (format == PIPE_FORMAT_Z24_UNORM_S8_UINT ||
  93                format == PIPE_FORMAT_S8_UINT_Z24_UNORM ||
  94                format == PIPE_FORMAT_Z24X8_UNORM ||
  95                format == PIPE_FORMAT_X8Z24_UNORM) {
  96          return GL_UNSIGNED_INT_24_8;
  97       }
  98       else if (format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT) {
  99          return GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
 100       }
 101       else {
 102          const GLuint size = format_max_bits(format);
 103
 104          assert(i < 4);
 105          if (i == 4)
 106             return GL_NONE;
 107
 108          if (size == 8) {
 109             if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
 110                return GL_UNSIGNED_BYTE;
 111             else
 112                return GL_BYTE;
 113          }
 114          else if (size == 16) {
 115             if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT)
 116                return GL_HALF_FLOAT;
 117             if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
 118                return GL_UNSIGNED_SHORT;
 119             else
 120                return GL_SHORT;
 121          }
 122          else if (size <= 32) {
 123             if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT)
 124                return GL_FLOAT;
 125             if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
 126                return GL_UNSIGNED_INT;
 127             else
 128                return GL_INT;
 129          }
 130          else {
 131             assert(size == 64);
 132             assert(desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT);
 133             return GL_DOUBLE;
 134          }
 135       }
 136    }
 137    else if (format == PIPE_FORMAT_UYVY) {
 138       return GL_UNSIGNED_SHORT;
 139    }
 140    else if (format == PIPE_FORMAT_YUYV) {
 141       return GL_UNSIGNED_SHORT;
 142    }
 143    else {
 144       /* probably a compressed format, unsupported anyway */
 145       return GL_NONE;
 146    }
 147 }
 148
 149
 150 /**
 151  * Translate Mesa format to Gallium format.
 152  */
 153 enum pipe_format
 154 st_mesa_format_to_pipe_format(gl_format mesaFormat)
 155 {
 156    switch (mesaFormat) {
 157    case MESA_FORMAT_RGBA8888:
 158       return PIPE_FORMAT_A8B8G8R8_UNORM;
 159    case MESA_FORMAT_RGBA8888_REV:
 160       return PIPE_FORMAT_R8G8B8A8_UNORM;
 161    case MESA_FORMAT_ARGB8888:
 162       return PIPE_FORMAT_B8G8R8A8_UNORM;
 163    case MESA_FORMAT_ARGB8888_REV:
 164       return PIPE_FORMAT_A8R8G8B8_UNORM;
 165    case MESA_FORMAT_XRGB8888:
 166       return PIPE_FORMAT_B8G8R8X8_UNORM;
 167    case MESA_FORMAT_XRGB8888_REV:
 168       return PIPE_FORMAT_X8R8G8B8_UNORM;
 169    case MESA_FORMAT_ARGB1555:
 170       return PIPE_FORMAT_B5G5R5A1_UNORM;
 171    case MESA_FORMAT_ARGB4444:
 172       return PIPE_FORMAT_B4G4R4A4_UNORM;
 173    case MESA_FORMAT_RGB565:
 174       return PIPE_FORMAT_B5G6R5_UNORM;
 175    case MESA_FORMAT_RGB332:
 176       return PIPE_FORMAT_B2G3R3_UNORM;
 177    case MESA_FORMAT_ARGB2101010:
 178       return PIPE_FORMAT_B10G10R10A2_UNORM;
 179    case MESA_FORMAT_AL44:
 180       return PIPE_FORMAT_L4A4_UNORM;
 181    case MESA_FORMAT_AL88:
 182       return PIPE_FORMAT_L8A8_UNORM;
 183    case MESA_FORMAT_AL1616:
 184       return PIPE_FORMAT_L16A16_UNORM;
 185    case MESA_FORMAT_A8:
 186       return PIPE_FORMAT_A8_UNORM;
 187    case MESA_FORMAT_A16:
 188       return PIPE_FORMAT_A16_UNORM;
 189    case MESA_FORMAT_L8:
 190       return PIPE_FORMAT_L8_UNORM;
 191    case MESA_FORMAT_L16:
 192       return PIPE_FORMAT_L16_UNORM;
 193    case MESA_FORMAT_I8:
 194       return PIPE_FORMAT_I8_UNORM;
 195    case MESA_FORMAT_I16:
 196       return PIPE_FORMAT_I16_UNORM;
 197    case MESA_FORMAT_Z16:
 198       return PIPE_FORMAT_Z16_UNORM;
 199    case MESA_FORMAT_Z32:
 200       return PIPE_FORMAT_Z32_UNORM;
 201    case MESA_FORMAT_Z24_S8:
 202       return PIPE_FORMAT_S8_UINT_Z24_UNORM;
 203    case MESA_FORMAT_S8_Z24:
 204       return PIPE_FORMAT_Z24_UNORM_S8_UINT;
 205    case MESA_FORMAT_Z24_X8:
 206       return PIPE_FORMAT_X8Z24_UNORM;
 207    case MESA_FORMAT_X8_Z24:
 208       return PIPE_FORMAT_Z24X8_UNORM;
 209    case MESA_FORMAT_S8:
 210       return PIPE_FORMAT_S8_UINT;
 211    case MESA_FORMAT_Z32_FLOAT:
 212       return PIPE_FORMAT_Z32_FLOAT;
 213    case MESA_FORMAT_Z32_FLOAT_X24S8:
 214       return PIPE_FORMAT_Z32_FLOAT_S8X24_UINT;
 215    case MESA_FORMAT_YCBCR:
 216       return PIPE_FORMAT_UYVY;
 217 #if FEATURE_texture_s3tc
 218    case MESA_FORMAT_RGB_DXT1:
 219       return PIPE_FORMAT_DXT1_RGB;
 220    case MESA_FORMAT_RGBA_DXT1:
 221       return PIPE_FORMAT_DXT1_RGBA;
 222    case MESA_FORMAT_RGBA_DXT3:
 223       return PIPE_FORMAT_DXT3_RGBA;
 224    case MESA_FORMAT_RGBA_DXT5:
 225       return PIPE_FORMAT_DXT5_RGBA;
 226 #if FEATURE_EXT_texture_sRGB
 227    case MESA_FORMAT_SRGB_DXT1:
 228       return PIPE_FORMAT_DXT1_SRGB;
 229    case MESA_FORMAT_SRGBA_DXT1:
 230       return PIPE_FORMAT_DXT1_SRGBA;
 231    case MESA_FORMAT_SRGBA_DXT3:
 232       return PIPE_FORMAT_DXT3_SRGBA;
 233    case MESA_FORMAT_SRGBA_DXT5:
 234       return PIPE_FORMAT_DXT5_SRGBA;
 235 #endif
 236 #endif
 237 #if FEATURE_EXT_texture_sRGB
 238    case MESA_FORMAT_SLA8:
 239       return PIPE_FORMAT_L8A8_SRGB;
 240    case MESA_FORMAT_SL8:
 241       return PIPE_FORMAT_L8_SRGB;
 242    case MESA_FORMAT_SRGB8:
 243       return PIPE_FORMAT_R8G8B8_SRGB;
 244    case MESA_FORMAT_SRGBA8:
 245       return PIPE_FORMAT_A8B8G8R8_SRGB;
 246    case MESA_FORMAT_SARGB8:
 247       return PIPE_FORMAT_B8G8R8A8_SRGB;
 248 #endif
 249    case MESA_FORMAT_RGBA_FLOAT32:
 250       return PIPE_FORMAT_R32G32B32A32_FLOAT;
 251    case MESA_FORMAT_RGBA_FLOAT16:
 252       return PIPE_FORMAT_R16G16B16A16_FLOAT;
 253    case MESA_FORMAT_RGB_FLOAT32:
 254       return PIPE_FORMAT_R32G32B32_FLOAT;
 255    case MESA_FORMAT_RGB_FLOAT16:
 256       return PIPE_FORMAT_R16G16B16_FLOAT;
 257    case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
 258       return PIPE_FORMAT_L32A32_FLOAT;
 259    case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
 260       return PIPE_FORMAT_L16A16_FLOAT;
 261    case MESA_FORMAT_LUMINANCE_FLOAT32:
 262       return PIPE_FORMAT_L32_FLOAT;
 263    case MESA_FORMAT_LUMINANCE_FLOAT16:
 264       return PIPE_FORMAT_L16_FLOAT;
 265    case MESA_FORMAT_ALPHA_FLOAT32:
 266       return PIPE_FORMAT_A32_FLOAT;
 267    case MESA_FORMAT_ALPHA_FLOAT16:
 268       return PIPE_FORMAT_A16_FLOAT;
 269    case MESA_FORMAT_INTENSITY_FLOAT32:
 270       return PIPE_FORMAT_I32_FLOAT;
 271    case MESA_FORMAT_INTENSITY_FLOAT16:
 272       return PIPE_FORMAT_I16_FLOAT;
 273    case MESA_FORMAT_R_FLOAT32:
 274       return PIPE_FORMAT_R32_FLOAT;
 275    case MESA_FORMAT_R_FLOAT16:
 276       return PIPE_FORMAT_R16_FLOAT;
 277    case MESA_FORMAT_RG_FLOAT32:
 278       return PIPE_FORMAT_R32G32_FLOAT;
 279    case MESA_FORMAT_RG_FLOAT16:
 280       return PIPE_FORMAT_R16G16_FLOAT;
 281
 282    case MESA_FORMAT_R8:
 283       return PIPE_FORMAT_R8_UNORM;
 284    case MESA_FORMAT_R16:
 285       return PIPE_FORMAT_R16_UNORM;
 286    case MESA_FORMAT_RG88:
 287       return PIPE_FORMAT_R8G8_UNORM;
 288    case MESA_FORMAT_RG1616:
 289       return PIPE_FORMAT_R16G16_UNORM;
 290    case MESA_FORMAT_RGBA_16:
 291       return PIPE_FORMAT_R16G16B16A16_UNORM;
 292
 293    /* signed int formats */
 294    case MESA_FORMAT_ALPHA_UINT8:
 295       return PIPE_FORMAT_A8_UINT;
 296    case MESA_FORMAT_ALPHA_UINT16:
 297       return PIPE_FORMAT_A16_UINT;
 298    case MESA_FORMAT_ALPHA_UINT32:
 299       return PIPE_FORMAT_A32_UINT;
 300
 301    case MESA_FORMAT_ALPHA_INT8:
 302       return PIPE_FORMAT_A8_SINT;
 303    case MESA_FORMAT_ALPHA_INT16:
 304       return PIPE_FORMAT_A16_SINT;
 305    case MESA_FORMAT_ALPHA_INT32:
 306       return PIPE_FORMAT_A32_SINT;
 307
 308    case MESA_FORMAT_INTENSITY_UINT8:
 309       return PIPE_FORMAT_I8_UINT;
 310    case MESA_FORMAT_INTENSITY_UINT16:
 311       return PIPE_FORMAT_I16_UINT;
 312    case MESA_FORMAT_INTENSITY_UINT32:
 313       return PIPE_FORMAT_I32_UINT;
 314
 315    case MESA_FORMAT_INTENSITY_INT8:
 316       return PIPE_FORMAT_I8_SINT;
 317    case MESA_FORMAT_INTENSITY_INT16:
 318       return PIPE_FORMAT_I16_SINT;
 319    case MESA_FORMAT_INTENSITY_INT32:
 320       return PIPE_FORMAT_I32_SINT;
 321
 322    case MESA_FORMAT_LUMINANCE_UINT8:
 323       return PIPE_FORMAT_L8_UINT;
 324    case MESA_FORMAT_LUMINANCE_UINT16:
 325       return PIPE_FORMAT_L16_UINT;
 326    case MESA_FORMAT_LUMINANCE_UINT32:
 327       return PIPE_FORMAT_L32_UINT;
 328
 329    case MESA_FORMAT_LUMINANCE_INT8:
 330       return PIPE_FORMAT_L8_SINT;
 331    case MESA_FORMAT_LUMINANCE_INT16:
 332       return PIPE_FORMAT_L16_SINT;
 333    case MESA_FORMAT_LUMINANCE_INT32:
 334       return PIPE_FORMAT_L32_SINT;
 335
 336    case MESA_FORMAT_LUMINANCE_ALPHA_UINT8:
 337       return PIPE_FORMAT_L8A8_UINT;
 338    case MESA_FORMAT_LUMINANCE_ALPHA_UINT16:
 339       return PIPE_FORMAT_L16A16_UINT;
 340    case MESA_FORMAT_LUMINANCE_ALPHA_UINT32:
 341       return PIPE_FORMAT_L32A32_UINT;
 342
 343    case MESA_FORMAT_LUMINANCE_ALPHA_INT8:
 344       return PIPE_FORMAT_L8A8_SINT;
 345    case MESA_FORMAT_LUMINANCE_ALPHA_INT16:
 346       return PIPE_FORMAT_L16A16_SINT;
 347    case MESA_FORMAT_LUMINANCE_ALPHA_INT32:
 348       return PIPE_FORMAT_L32A32_SINT;
 349
 350    case MESA_FORMAT_R_INT8:
 351       return PIPE_FORMAT_R8_SINT;
 352    case MESA_FORMAT_RG_INT8:
 353       return PIPE_FORMAT_R8G8_SINT;
 354    case MESA_FORMAT_RGB_INT8:
 355       return PIPE_FORMAT_R8G8B8_SINT;
 356    case MESA_FORMAT_RGBA_INT8:
 357       return PIPE_FORMAT_R8G8B8A8_SINT;
 358    case MESA_FORMAT_R_INT16:
 359       return PIPE_FORMAT_R16_SINT;
 360    case MESA_FORMAT_RG_INT16:
 361       return PIPE_FORMAT_R16G16_SINT;
 362    case MESA_FORMAT_RGB_INT16:
 363       return PIPE_FORMAT_R16G16B16_SINT;
 364    case MESA_FORMAT_RGBA_INT16:
 365       return PIPE_FORMAT_R16G16B16A16_SINT;
 366    case MESA_FORMAT_R_INT32:
 367       return PIPE_FORMAT_R32_SINT;
 368    case MESA_FORMAT_RG_INT32:
 369       return PIPE_FORMAT_R32G32_SINT;
 370    case MESA_FORMAT_RGB_INT32:
 371       return PIPE_FORMAT_R32G32B32_SINT;
 372    case MESA_FORMAT_RGBA_INT32:
 373       return PIPE_FORMAT_R32G32B32A32_SINT;
 374
 375    /* unsigned int formats */
 376    case MESA_FORMAT_R_UINT8:
 377       return PIPE_FORMAT_R8_UINT;
 378    case MESA_FORMAT_RG_UINT8:
 379       return PIPE_FORMAT_R8G8_UINT;
 380    case MESA_FORMAT_RGB_UINT8:
 381       return PIPE_FORMAT_R8G8B8_UINT;
 382    case MESA_FORMAT_RGBA_UINT8:
 383       return PIPE_FORMAT_R8G8B8A8_UINT;
 384    case MESA_FORMAT_R_UINT16:
 385       return PIPE_FORMAT_R16_UINT;
 386    case MESA_FORMAT_RG_UINT16:
 387       return PIPE_FORMAT_R16G16_UINT;
 388    case MESA_FORMAT_RGB_UINT16:
 389       return PIPE_FORMAT_R16G16B16_UINT;
 390    case MESA_FORMAT_RGBA_UINT16:
 391       return PIPE_FORMAT_R16G16B16A16_UINT;
 392    case MESA_FORMAT_R_UINT32:
 393       return PIPE_FORMAT_R32_UINT;
 394    case MESA_FORMAT_RG_UINT32:
 395       return PIPE_FORMAT_R32G32_UINT;
 396    case MESA_FORMAT_RGB_UINT32:
 397       return PIPE_FORMAT_R32G32B32_UINT;
 398    case MESA_FORMAT_RGBA_UINT32:
 399       return PIPE_FORMAT_R32G32B32A32_UINT;
 400
 401    case MESA_FORMAT_RED_RGTC1:
 402       return PIPE_FORMAT_RGTC1_UNORM;
 403    case MESA_FORMAT_SIGNED_RED_RGTC1:
 404       return PIPE_FORMAT_RGTC1_SNORM;
 405    case MESA_FORMAT_RG_RGTC2:
 406       return PIPE_FORMAT_RGTC2_UNORM;
 407    case MESA_FORMAT_SIGNED_RG_RGTC2:
 408       return PIPE_FORMAT_RGTC2_SNORM;
 409
 410    case MESA_FORMAT_L_LATC1:
 411       return PIPE_FORMAT_LATC1_UNORM;
 412    case MESA_FORMAT_SIGNED_L_LATC1:
 413       return PIPE_FORMAT_LATC1_SNORM;
 414    case MESA_FORMAT_LA_LATC2:
 415       return PIPE_FORMAT_LATC2_UNORM;
 416    case MESA_FORMAT_SIGNED_LA_LATC2:
 417       return PIPE_FORMAT_LATC2_SNORM;
 418
 419    /* signed normalized formats */
 420    case MESA_FORMAT_SIGNED_R8:
 421       return PIPE_FORMAT_R8_SNORM;
 422    case MESA_FORMAT_SIGNED_RG88_REV:
 423       return PIPE_FORMAT_R8G8_SNORM;
 424    case MESA_FORMAT_SIGNED_RGBA8888_REV:
 425       return PIPE_FORMAT_R8G8B8A8_SNORM;
 426
 427    case MESA_FORMAT_SIGNED_A8:
 428       return PIPE_FORMAT_A8_SNORM;
 429    case MESA_FORMAT_SIGNED_L8:
 430       return PIPE_FORMAT_L8_SNORM;
 431    case MESA_FORMAT_SIGNED_AL88:
 432       return PIPE_FORMAT_L8A8_SNORM;
 433    case MESA_FORMAT_SIGNED_I8:
 434       return PIPE_FORMAT_I8_SNORM;
 435
 436    case MESA_FORMAT_SIGNED_R16:
 437       return PIPE_FORMAT_R16_SNORM;
 438    case MESA_FORMAT_SIGNED_GR1616:
 439       return PIPE_FORMAT_R16G16_SNORM;
 440    case MESA_FORMAT_SIGNED_RGBA_16:
 441       return PIPE_FORMAT_R16G16B16A16_SNORM;
 442
 443    case MESA_FORMAT_SIGNED_A16:
 444       return PIPE_FORMAT_A16_SNORM;
 445    case MESA_FORMAT_SIGNED_L16:
 446       return PIPE_FORMAT_L16_SNORM;
 447    case MESA_FORMAT_SIGNED_AL1616:
 448       return PIPE_FORMAT_L16A16_SNORM;
 449    case MESA_FORMAT_SIGNED_I16:
 450       return PIPE_FORMAT_I16_SNORM;
 451
 452    case MESA_FORMAT_RGB9_E5_FLOAT:
 453       return PIPE_FORMAT_R9G9B9E5_FLOAT;
 454    case MESA_FORMAT_R11_G11_B10_FLOAT:
 455       return PIPE_FORMAT_R11G11B10_FLOAT;
 456
 457    default:
 458       assert(0);
 459       return PIPE_FORMAT_NONE;
 460    }
 461 }
 462
 463
 464 /**
 465  * Translate Gallium format to Mesa format.
 466  */
 467 gl_format
 468 st_pipe_format_to_mesa_format(enum pipe_format format)
 469 {
 470    switch (format) {
 471    case PIPE_FORMAT_A8B8G8R8_UNORM:
 472       return MESA_FORMAT_RGBA8888;
 473    case PIPE_FORMAT_R8G8B8A8_UNORM:
 474       return MESA_FORMAT_RGBA8888_REV;
 475    case PIPE_FORMAT_B8G8R8A8_UNORM:
 476       return MESA_FORMAT_ARGB8888;
 477    case PIPE_FORMAT_A8R8G8B8_UNORM:
 478       return MESA_FORMAT_ARGB8888_REV;
 479    case PIPE_FORMAT_B8G8R8X8_UNORM:
 480       return MESA_FORMAT_XRGB8888;
 481    case PIPE_FORMAT_X8R8G8B8_UNORM:
 482       return MESA_FORMAT_XRGB8888_REV;
 483    case PIPE_FORMAT_B5G5R5A1_UNORM:
 484       return MESA_FORMAT_ARGB1555;
 485    case PIPE_FORMAT_B4G4R4A4_UNORM:
 486       return MESA_FORMAT_ARGB4444;
 487    case PIPE_FORMAT_B5G6R5_UNORM:
 488       return MESA_FORMAT_RGB565;
 489    case PIPE_FORMAT_B2G3R3_UNORM:
 490       return MESA_FORMAT_RGB332;
 491    case PIPE_FORMAT_B10G10R10A2_UNORM:
 492       return MESA_FORMAT_ARGB2101010;
 493    case PIPE_FORMAT_L4A4_UNORM:
 494       return MESA_FORMAT_AL44;
 495    case PIPE_FORMAT_L8A8_UNORM:
 496       return MESA_FORMAT_AL88;
 497    case PIPE_FORMAT_L16A16_UNORM:
 498       return MESA_FORMAT_AL1616;
 499    case PIPE_FORMAT_A8_UNORM:
 500       return MESA_FORMAT_A8;
 501    case PIPE_FORMAT_A16_UNORM:
 502       return MESA_FORMAT_A16;
 503    case PIPE_FORMAT_L8_UNORM:
 504       return MESA_FORMAT_L8;
 505    case PIPE_FORMAT_L16_UNORM:
 506       return MESA_FORMAT_L16;
 507    case PIPE_FORMAT_I8_UNORM:
 508       return MESA_FORMAT_I8;
 509    case PIPE_FORMAT_I16_UNORM:
 510       return MESA_FORMAT_I16;
 511    case PIPE_FORMAT_S8_UINT:
 512       return MESA_FORMAT_S8;
 513
 514    case PIPE_FORMAT_R16G16B16A16_UNORM:
 515       return MESA_FORMAT_RGBA_16;
 516
 517    case PIPE_FORMAT_Z16_UNORM:
 518       return MESA_FORMAT_Z16;
 519    case PIPE_FORMAT_Z32_UNORM:
 520       return MESA_FORMAT_Z32;
 521    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 522       return MESA_FORMAT_Z24_S8;
 523    case PIPE_FORMAT_X8Z24_UNORM:
 524       return MESA_FORMAT_Z24_X8;
 525    case PIPE_FORMAT_Z24X8_UNORM:
 526       return MESA_FORMAT_X8_Z24;
 527    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 528       return MESA_FORMAT_S8_Z24;
 529    case PIPE_FORMAT_Z32_FLOAT:
 530       return MESA_FORMAT_Z32_FLOAT;
 531    case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
 532       return MESA_FORMAT_Z32_FLOAT_X24S8;
 533
 534    case PIPE_FORMAT_UYVY:
 535       return MESA_FORMAT_YCBCR;
 536    case PIPE_FORMAT_YUYV:
 537       return MESA_FORMAT_YCBCR_REV;
 538
 539 #if FEATURE_texture_s3tc
 540    case PIPE_FORMAT_DXT1_RGB:
 541       return MESA_FORMAT_RGB_DXT1;
 542    case PIPE_FORMAT_DXT1_RGBA:
 543       return MESA_FORMAT_RGBA_DXT1;
 544    case PIPE_FORMAT_DXT3_RGBA:
 545       return MESA_FORMAT_RGBA_DXT3;
 546    case PIPE_FORMAT_DXT5_RGBA:
 547       return MESA_FORMAT_RGBA_DXT5;
 548 #if FEATURE_EXT_texture_sRGB
 549    case PIPE_FORMAT_DXT1_SRGB:
 550       return MESA_FORMAT_SRGB_DXT1;
 551    case PIPE_FORMAT_DXT1_SRGBA:
 552       return MESA_FORMAT_SRGBA_DXT1;
 553    case PIPE_FORMAT_DXT3_SRGBA:
 554       return MESA_FORMAT_SRGBA_DXT3;
 555    case PIPE_FORMAT_DXT5_SRGBA:
 556       return MESA_FORMAT_SRGBA_DXT5;
 557 #endif
 558 #endif
 559
 560 #if FEATURE_EXT_texture_sRGB
 561    case PIPE_FORMAT_L8A8_SRGB:
 562       return MESA_FORMAT_SLA8;
 563    case PIPE_FORMAT_L8_SRGB:
 564       return MESA_FORMAT_SL8;
 565    case PIPE_FORMAT_R8G8B8_SRGB:
 566       return MESA_FORMAT_SRGB8;
 567    case PIPE_FORMAT_A8B8G8R8_SRGB:
 568       return MESA_FORMAT_SRGBA8;
 569    case PIPE_FORMAT_B8G8R8A8_SRGB:
 570       return MESA_FORMAT_SARGB8;
 571 #endif
 572    case PIPE_FORMAT_R32G32B32A32_FLOAT:
 573       return MESA_FORMAT_RGBA_FLOAT32;
 574    case PIPE_FORMAT_R16G16B16A16_FLOAT:
 575       return MESA_FORMAT_RGBA_FLOAT16;
 576    case PIPE_FORMAT_R32G32B32_FLOAT:
 577       return MESA_FORMAT_RGB_FLOAT32;
 578    case PIPE_FORMAT_R16G16B16_FLOAT:
 579       return MESA_FORMAT_RGB_FLOAT16;
 580    case PIPE_FORMAT_L32A32_FLOAT:
 581       return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
 582    case PIPE_FORMAT_L16A16_FLOAT:
 583       return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
 584    case PIPE_FORMAT_L32_FLOAT:
 585       return MESA_FORMAT_LUMINANCE_FLOAT32;
 586    case PIPE_FORMAT_L16_FLOAT:
 587       return MESA_FORMAT_LUMINANCE_FLOAT16;
 588    case PIPE_FORMAT_A32_FLOAT:
 589       return MESA_FORMAT_ALPHA_FLOAT32;
 590    case PIPE_FORMAT_A16_FLOAT:
 591       return MESA_FORMAT_ALPHA_FLOAT16;
 592    case PIPE_FORMAT_I32_FLOAT:
 593       return MESA_FORMAT_INTENSITY_FLOAT32;
 594    case PIPE_FORMAT_I16_FLOAT:
 595       return MESA_FORMAT_INTENSITY_FLOAT16;
 596    case PIPE_FORMAT_R32_FLOAT:
 597       return MESA_FORMAT_R_FLOAT32;
 598    case PIPE_FORMAT_R16_FLOAT:
 599       return MESA_FORMAT_R_FLOAT16;
 600    case PIPE_FORMAT_R32G32_FLOAT:
 601       return MESA_FORMAT_RG_FLOAT32;
 602    case PIPE_FORMAT_R16G16_FLOAT:
 603       return MESA_FORMAT_RG_FLOAT16;
 604
 605    case PIPE_FORMAT_R8_UNORM:
 606       return MESA_FORMAT_R8;
 607    case PIPE_FORMAT_R16_UNORM:
 608       return MESA_FORMAT_R16;
 609    case PIPE_FORMAT_R8G8_UNORM:
 610       return MESA_FORMAT_RG88;
 611    case PIPE_FORMAT_R16G16_UNORM:
 612       return MESA_FORMAT_RG1616;
 613
 614    case PIPE_FORMAT_A8_UINT:
 615       return MESA_FORMAT_ALPHA_UINT8;
 616    case PIPE_FORMAT_A16_UINT:
 617       return MESA_FORMAT_ALPHA_UINT16;
 618    case PIPE_FORMAT_A32_UINT:
 619       return MESA_FORMAT_ALPHA_UINT32;
 620    case PIPE_FORMAT_A8_SINT:
 621       return MESA_FORMAT_ALPHA_INT8;
 622    case PIPE_FORMAT_A16_SINT:
 623       return MESA_FORMAT_ALPHA_INT16;
 624    case PIPE_FORMAT_A32_SINT:
 625       return MESA_FORMAT_ALPHA_INT32;
 626
 627    case PIPE_FORMAT_I8_UINT:
 628       return MESA_FORMAT_INTENSITY_UINT8;
 629    case PIPE_FORMAT_I16_UINT:
 630       return MESA_FORMAT_INTENSITY_UINT16;
 631    case PIPE_FORMAT_I32_UINT:
 632       return MESA_FORMAT_INTENSITY_UINT32;
 633    case PIPE_FORMAT_I8_SINT:
 634       return MESA_FORMAT_INTENSITY_INT8;
 635    case PIPE_FORMAT_I16_SINT:
 636       return MESA_FORMAT_INTENSITY_INT16;
 637    case PIPE_FORMAT_I32_SINT:
 638       return MESA_FORMAT_INTENSITY_INT32;
 639
 640   case PIPE_FORMAT_L8_UINT:
 641       return MESA_FORMAT_LUMINANCE_UINT8;
 642    case PIPE_FORMAT_L16_UINT:
 643       return MESA_FORMAT_LUMINANCE_UINT16;
 644    case PIPE_FORMAT_L32_UINT:
 645       return MESA_FORMAT_LUMINANCE_UINT32;
 646    case PIPE_FORMAT_L8_SINT:
 647       return MESA_FORMAT_LUMINANCE_INT8;
 648    case PIPE_FORMAT_L16_SINT:
 649       return MESA_FORMAT_LUMINANCE_INT16;
 650    case PIPE_FORMAT_L32_SINT:
 651       return MESA_FORMAT_LUMINANCE_INT32;
 652
 653    case PIPE_FORMAT_L8A8_UINT:
 654       return MESA_FORMAT_LUMINANCE_ALPHA_UINT8;
 655    case PIPE_FORMAT_L16A16_UINT:
 656       return MESA_FORMAT_LUMINANCE_ALPHA_UINT16;
 657    case PIPE_FORMAT_L32A32_UINT:
 658       return MESA_FORMAT_LUMINANCE_ALPHA_UINT32;
 659    case PIPE_FORMAT_L8A8_SINT:
 660       return MESA_FORMAT_LUMINANCE_ALPHA_INT8;
 661    case PIPE_FORMAT_L16A16_SINT:
 662       return MESA_FORMAT_LUMINANCE_ALPHA_INT16;
 663    case PIPE_FORMAT_L32A32_SINT:
 664       return MESA_FORMAT_LUMINANCE_ALPHA_INT32;
 665
 666    case PIPE_FORMAT_R8_SINT:
 667       return MESA_FORMAT_R_INT8;
 668    case PIPE_FORMAT_R8G8_SINT:
 669       return MESA_FORMAT_RG_INT8;
 670    case PIPE_FORMAT_R8G8B8_SINT:
 671       return MESA_FORMAT_RGB_INT8;
 672    case PIPE_FORMAT_R8G8B8A8_SINT:
 673       return MESA_FORMAT_RGBA_INT8;
 674
 675    case PIPE_FORMAT_R16_SINT:
 676       return MESA_FORMAT_R_INT16;
 677    case PIPE_FORMAT_R16G16_SINT:
 678       return MESA_FORMAT_RG_INT16;
 679    case PIPE_FORMAT_R16G16B16_SINT:
 680       return MESA_FORMAT_RGB_INT16;
 681    case PIPE_FORMAT_R16G16B16A16_SINT:
 682       return MESA_FORMAT_RGBA_INT16;
 683
 684    case PIPE_FORMAT_R32_SINT:
 685       return MESA_FORMAT_R_INT32;
 686    case PIPE_FORMAT_R32G32_SINT:
 687       return MESA_FORMAT_RG_INT32;
 688    case PIPE_FORMAT_R32G32B32_SINT:
 689       return MESA_FORMAT_RGB_INT32;
 690    case PIPE_FORMAT_R32G32B32A32_SINT:
 691       return MESA_FORMAT_RGBA_INT32;
 692
 693    /* unsigned int formats */
 694    case PIPE_FORMAT_R8_UINT:
 695       return MESA_FORMAT_R_UINT8;
 696    case PIPE_FORMAT_R8G8_UINT:
 697       return MESA_FORMAT_RG_UINT8;
 698    case PIPE_FORMAT_R8G8B8_UINT:
 699       return MESA_FORMAT_RGB_UINT8;
 700    case PIPE_FORMAT_R8G8B8A8_UINT:
 701       return MESA_FORMAT_RGBA_UINT8;
 702
 703    case PIPE_FORMAT_R16_UINT:
 704       return MESA_FORMAT_R_UINT16;
 705    case PIPE_FORMAT_R16G16_UINT:
 706       return MESA_FORMAT_RG_UINT16;
 707    case PIPE_FORMAT_R16G16B16_UINT:
 708       return MESA_FORMAT_RGB_UINT16;
 709    case PIPE_FORMAT_R16G16B16A16_UINT:
 710       return MESA_FORMAT_RGBA_UINT16;
 711
 712    case PIPE_FORMAT_R32_UINT:
 713       return MESA_FORMAT_R_UINT32;
 714    case PIPE_FORMAT_R32G32_UINT:
 715       return MESA_FORMAT_RG_UINT32;
 716    case PIPE_FORMAT_R32G32B32_UINT:
 717       return MESA_FORMAT_RGB_UINT32;
 718    case PIPE_FORMAT_R32G32B32A32_UINT:
 719       return MESA_FORMAT_RGBA_UINT32;
 720
 721    case PIPE_FORMAT_RGTC1_UNORM:
 722       return MESA_FORMAT_RED_RGTC1;
 723    case PIPE_FORMAT_RGTC1_SNORM:
 724       return MESA_FORMAT_SIGNED_RED_RGTC1;
 725    case PIPE_FORMAT_RGTC2_UNORM:
 726       return MESA_FORMAT_RG_RGTC2;
 727    case PIPE_FORMAT_RGTC2_SNORM:
 728       return MESA_FORMAT_SIGNED_RG_RGTC2;
 729
 730    case PIPE_FORMAT_LATC1_UNORM:
 731       return MESA_FORMAT_L_LATC1;
 732    case PIPE_FORMAT_LATC1_SNORM:
 733       return MESA_FORMAT_SIGNED_L_LATC1;
 734    case PIPE_FORMAT_LATC2_UNORM:
 735       return MESA_FORMAT_LA_LATC2;
 736    case PIPE_FORMAT_LATC2_SNORM:
 737       return MESA_FORMAT_SIGNED_LA_LATC2;
 738
 739    /* signed normalized formats */
 740    case PIPE_FORMAT_R8_SNORM:
 741       return MESA_FORMAT_SIGNED_R8;
 742    case PIPE_FORMAT_R8G8_SNORM:
 743       return MESA_FORMAT_SIGNED_RG88_REV;
 744    case PIPE_FORMAT_R8G8B8A8_SNORM:
 745       return MESA_FORMAT_SIGNED_RGBA8888_REV;
 746
 747    case PIPE_FORMAT_A8_SNORM:
 748       return MESA_FORMAT_SIGNED_A8;
 749    case PIPE_FORMAT_L8_SNORM:
 750       return MESA_FORMAT_SIGNED_L8;
 751    case PIPE_FORMAT_L8A8_SNORM:
 752       return MESA_FORMAT_SIGNED_AL88;
 753    case PIPE_FORMAT_I8_SNORM:
 754       return MESA_FORMAT_SIGNED_I8;
 755
 756    case PIPE_FORMAT_R16_SNORM:
 757       return MESA_FORMAT_SIGNED_R16;
 758    case PIPE_FORMAT_R16G16_SNORM:
 759       return MESA_FORMAT_SIGNED_GR1616;
 760    case PIPE_FORMAT_R16G16B16A16_SNORM:
 761       return MESA_FORMAT_SIGNED_RGBA_16;
 762
 763    case PIPE_FORMAT_A16_SNORM:
 764       return MESA_FORMAT_SIGNED_A16;
 765    case PIPE_FORMAT_L16_SNORM:
 766       return MESA_FORMAT_SIGNED_L16;
 767    case PIPE_FORMAT_L16A16_SNORM:
 768       return MESA_FORMAT_SIGNED_AL1616;
 769    case PIPE_FORMAT_I16_SNORM:
 770       return MESA_FORMAT_SIGNED_I16;
 771
 772    case PIPE_FORMAT_R9G9B9E5_FLOAT:
 773       return MESA_FORMAT_RGB9_E5_FLOAT;
 774    case PIPE_FORMAT_R11G11B10_FLOAT:
 775       return MESA_FORMAT_R11_G11_B10_FLOAT;
 776
 777    default:
 778       assert(0);
 779       return MESA_FORMAT_NONE;
 780    }
 781 }
 782
 783
 784 /**
 785  * Map GL texture formats to Gallium pipe formats.
 786  */
 787 struct format_mapping
 788 {
 789    GLenum glFormats[18];       /**< list of GLenum formats, 0-terminated */
 790    enum pipe_format pipeFormats[10]; /**< list of pipe formats, 0-terminated */
 791 };
 792
 793
 794 #define DEFAULT_RGBA_FORMATS \
 795       PIPE_FORMAT_B8G8R8A8_UNORM, \
 796       PIPE_FORMAT_A8R8G8B8_UNORM, \
 797       PIPE_FORMAT_A8B8G8R8_UNORM, \
 798       PIPE_FORMAT_B5G6R5_UNORM, \
 799       0
 800
 801 #define DEFAULT_RGB_FORMATS \
 802       PIPE_FORMAT_B8G8R8X8_UNORM, \
 803       PIPE_FORMAT_X8R8G8B8_UNORM, \
 804       PIPE_FORMAT_X8B8G8R8_UNORM, \
 805       PIPE_FORMAT_B8G8R8A8_UNORM, \
 806       PIPE_FORMAT_A8R8G8B8_UNORM, \
 807       PIPE_FORMAT_A8B8G8R8_UNORM, \
 808       PIPE_FORMAT_B5G6R5_UNORM, \
 809       0
 810
 811 #define DEFAULT_SRGBA_FORMATS \
 812       PIPE_FORMAT_B8G8R8A8_SRGB, \
 813       PIPE_FORMAT_A8R8G8B8_SRGB, \
 814       PIPE_FORMAT_A8B8G8R8_SRGB, \
 815       0
 816
 817 #define DEFAULT_DEPTH_FORMATS \
 818       PIPE_FORMAT_Z24X8_UNORM, \
 819       PIPE_FORMAT_X8Z24_UNORM, \
 820       PIPE_FORMAT_Z16_UNORM, \
 821       PIPE_FORMAT_Z24_UNORM_S8_UINT, \
 822       PIPE_FORMAT_S8_UINT_Z24_UNORM, \
 823       0
 824
 825 /**
 826  * This table maps OpenGL texture format enums to Gallium pipe_format enums.
 827  * Multiple GL enums might map to multiple pipe_formats.
 828  * The first pipe format in the list that's supported is the one that's chosen.
 829  */
 830 static const struct format_mapping format_map[] = {
 831    /* Basic RGB, RGBA formats */
 832    {
 833       { GL_RGB10, GL_RGB10_A2, 0 },
 834       { PIPE_FORMAT_B10G10R10A2_UNORM, DEFAULT_RGBA_FORMATS }
 835    },
 836    {
 837       { 4, GL_RGBA, GL_RGBA8, 0 },
 838       { PIPE_FORMAT_R8G8B8A8_UNORM, DEFAULT_RGBA_FORMATS }
 839    },
 840    {
 841       { GL_BGRA, 0 },
 842       { PIPE_FORMAT_B8G8R8A8_UNORM, DEFAULT_RGBA_FORMATS }
 843    },
 844    {
 845       { 3, GL_RGB, GL_RGB8, 0 },
 846       { DEFAULT_RGB_FORMATS }
 847    },
 848    {
 849       { GL_RGB12, GL_RGB16, GL_RGBA12, GL_RGBA16, 0 },
 850       { PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGBA_FORMATS }
 851    },
 852    {
 853       { GL_RGBA4, GL_RGBA2, 0 },
 854       { PIPE_FORMAT_B4G4R4A4_UNORM, DEFAULT_RGBA_FORMATS }
 855    },
 856    {
 857       { GL_RGB5_A1, 0 },
 858       { PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }
 859    },
 860    {
 861       { GL_R3_G3_B2, 0 },
 862       { PIPE_FORMAT_B2G3R3_UNORM, PIPE_FORMAT_B5G6R5_UNORM,
 863         PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }
 864    },
 865    {
 866       { GL_RGB5, GL_RGB4 },
 867       { PIPE_FORMAT_B5G6R5_UNORM, PIPE_FORMAT_B5G5R5A1_UNORM,
 868         DEFAULT_RGBA_FORMATS }
 869    },
 870
 871    /* basic Alpha formats */
 872    {
 873       { GL_ALPHA12, GL_ALPHA16, 0 },
 874       { PIPE_FORMAT_A16_UNORM, PIPE_FORMAT_A8_UNORM,
 875         DEFAULT_RGBA_FORMATS }
 876    },
 877    {
 878       { GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_COMPRESSED_ALPHA, 0 },
 879       { PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
 880    },
 881
 882    /* basic Luminance formats */
 883    {
 884       { GL_LUMINANCE12, GL_LUMINANCE16, 0 },
 885       { PIPE_FORMAT_L16_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
 886    },
 887    {
 888       { 1, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8, 0 },
 889       { PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
 890    },
 891
 892    /* basic Luminance/Alpha formats */
 893    {
 894       { GL_LUMINANCE12_ALPHA4, GL_LUMINANCE12_ALPHA12,
 895         GL_LUMINANCE16_ALPHA16, 0},
 896       { PIPE_FORMAT_L16A16_UNORM, PIPE_FORMAT_L8A8_UNORM,
 897         DEFAULT_RGBA_FORMATS }
 898    },
 899    {
 900       { 2, GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, GL_LUMINANCE8_ALPHA8, 0 },
 901       { PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
 902    },
 903    {
 904       { GL_LUMINANCE4_ALPHA4, 0 },
 905       { PIPE_FORMAT_L4A4_UNORM, PIPE_FORMAT_L8A8_UNORM,
 906         DEFAULT_RGBA_FORMATS }
 907    },
 908
 909    /* basic Intensity formats */
 910    {
 911       { GL_INTENSITY12, GL_INTENSITY16, 0 },
 912       { PIPE_FORMAT_I16_UNORM, PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
 913    },
 914    {
 915       { GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8,
 916         GL_COMPRESSED_INTENSITY, 0 },
 917       { PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
 918    },
 919
 920    /* YCbCr */
 921    {
 922       { GL_YCBCR_MESA, 0 },
 923       { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV, 0 }
 924    },
 925
 926    /* compressed formats */ /* XXX PIPE_BIND_SAMPLER_VIEW only */
 927    {
 928       { GL_COMPRESSED_RGB, 0 },
 929       { PIPE_FORMAT_DXT1_RGB, DEFAULT_RGB_FORMATS }
 930    },
 931    {
 932       { GL_COMPRESSED_RGBA, 0 },
 933       { PIPE_FORMAT_DXT5_RGBA, DEFAULT_RGBA_FORMATS }
 934    },
 935    {
 936       { GL_RGB_S3TC, GL_RGB4_S3TC, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0 },
 937       { PIPE_FORMAT_DXT1_RGB, 0 }
 938    },
 939    {
 940       { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0 },
 941       { PIPE_FORMAT_DXT1_RGBA, 0 }
 942    },
 943    {
 944       { GL_RGBA_S3TC, GL_RGBA4_S3TC, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0 },
 945       { PIPE_FORMAT_DXT3_RGBA, 0 }
 946    },
 947    {
 948       { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0 },
 949       { PIPE_FORMAT_DXT5_RGBA, 0 }
 950    },
 951
 952 #if 0
 953    {
 954       { GL_COMPRESSED_RGB_FXT1_3DFX, 0 },
 955       { PIPE_FORMAT_RGB_FXT1, 0 }
 956    },
 957    {
 958       { GL_COMPRESSED_RGBA_FXT1_3DFX, 0 },
 959       { PIPE_FORMAT_RGBA_FXT1, 0 }
 960    },
 961 #endif
 962
 963    /* Depth formats */
 964    {
 965       { GL_DEPTH_COMPONENT16, 0 },
 966       { PIPE_FORMAT_Z16_UNORM, DEFAULT_DEPTH_FORMATS }
 967    },
 968    {
 969       { GL_DEPTH_COMPONENT24, 0 },
 970       { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
 971         DEFAULT_DEPTH_FORMATS }
 972    },
 973    {
 974       { GL_DEPTH_COMPONENT32, 0 },
 975       { PIPE_FORMAT_Z32_UNORM, DEFAULT_DEPTH_FORMATS }
 976    },
 977    {
 978       { GL_DEPTH_COMPONENT, 0 },
 979       { DEFAULT_DEPTH_FORMATS }
 980    },
 981    {
 982       { GL_DEPTH_COMPONENT32F, 0 },
 983       { PIPE_FORMAT_Z32_FLOAT, 0 }
 984    },
 985
 986    /* stencil formats */
 987    {
 988       { GL_STENCIL_INDEX, GL_STENCIL_INDEX1_EXT, GL_STENCIL_INDEX4_EXT,
 989         GL_STENCIL_INDEX8_EXT, GL_STENCIL_INDEX16_EXT, 0 },
 990       {
 991          PIPE_FORMAT_S8_UINT, PIPE_FORMAT_Z24_UNORM_S8_UINT,
 992          PIPE_FORMAT_S8_UINT_Z24_UNORM, 0
 993       }
 994    },
 995
 996    /* Depth / Stencil formats */
 997    {
 998       { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 },
 999       { PIPE_FORMAT_Z24_UNORM_S8_UINT, PIPE_FORMAT_S8_UINT_Z24_UNORM, 0 }
1000    },
1001    {
1002       { GL_DEPTH32F_STENCIL8, 0 },
1003       { PIPE_FORMAT_Z32_FLOAT_S8X24_UINT, 0 }
1004    },
1005
1006    /* sRGB formats */
1007    {
1008       { GL_SRGB_EXT, GL_SRGB8_EXT, GL_SRGB_ALPHA_EXT, GL_SRGB8_ALPHA8_EXT, 0 },
1009       { DEFAULT_SRGBA_FORMATS }
1010    },
1011    {
1012       { GL_COMPRESSED_SRGB_EXT, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 0 },
1013       { PIPE_FORMAT_DXT1_SRGB, DEFAULT_SRGBA_FORMATS }
1014    },
1015    {
1016       { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 0 },
1017       { PIPE_FORMAT_DXT1_SRGBA, 0 }
1018    },
1019    {
1020       { GL_COMPRESSED_SRGB_ALPHA_EXT,
1021         GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 0 },
1022       { PIPE_FORMAT_DXT3_SRGBA, DEFAULT_SRGBA_FORMATS }
1023    },
1024    {
1025       { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 0 },
1026       { PIPE_FORMAT_DXT5_SRGBA, 0 }
1027    },
1028    {
1029       { GL_SLUMINANCE_ALPHA_EXT, GL_SLUMINANCE8_ALPHA8_EXT,
1030         GL_COMPRESSED_SLUMINANCE_EXT, GL_COMPRESSED_SLUMINANCE_ALPHA_EXT, 0 },
1031       { PIPE_FORMAT_L8A8_SRGB, DEFAULT_SRGBA_FORMATS }
1032    },
1033    {
1034       { GL_SLUMINANCE_EXT, GL_SLUMINANCE8_EXT, 0 },
1035       { PIPE_FORMAT_L8_SRGB, DEFAULT_SRGBA_FORMATS }
1036    },
1037
1038    /* 16-bit float formats */
1039    {
1040       { GL_RGBA16F_ARB, 0 },
1041       { PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1042    },
1043    {
1044       { GL_RGB16F_ARB, 0 },
1045       { PIPE_FORMAT_R16G16B16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1046         PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1047    },
1048    {
1049       { GL_LUMINANCE_ALPHA16F_ARB, 0 },
1050       { PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1051         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1052    },
1053    {
1054       { GL_ALPHA16F_ARB, 0 },
1055       { PIPE_FORMAT_A16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1056         PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1057         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1058    },
1059    {
1060       { GL_INTENSITY16F_ARB, 0 },
1061       { PIPE_FORMAT_I16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1062         PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1063         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1064    },
1065    {
1066       { GL_LUMINANCE16F_ARB, 0 },
1067       { PIPE_FORMAT_L16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1068         PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1069         PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1070    },
1071    {
1072       { GL_R16F, 0 },
1073       { PIPE_FORMAT_R16_FLOAT, PIPE_FORMAT_R16G16_FLOAT,
1074         PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1075         PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1076    },
1077    {
1078       { GL_RG16F, 0 },
1079       { PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1080         PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1081    },
1082
1083    /* 32-bit float formats */
1084    {
1085       { GL_RGBA32F_ARB, 0 },
1086       { PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1087    },
1088    {
1089       { GL_RGB32F_ARB, 0 },
1090       { PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1091         PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1092    },
1093    {
1094       { GL_LUMINANCE_ALPHA32F_ARB, 0 },
1095       { PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1096         PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1097    },
1098    {
1099       { GL_ALPHA32F_ARB, 0 },
1100       { PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1101         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_A16_FLOAT,
1102         PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1103    },
1104    {
1105       { GL_INTENSITY32F_ARB, 0 },
1106       { PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1107         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_I16_FLOAT,
1108         PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1109    },
1110    {
1111       { GL_LUMINANCE32F_ARB, 0 },
1112       { PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1113         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_L16_FLOAT,
1114         PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1115    },
1116    {
1117       { GL_R32F, 0 },
1118       { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT,
1119         PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16_FLOAT,
1120         PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1121    },
1122    {
1123       { GL_RG32F, 0 },
1124       { PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1125         PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1126    },
1127
1128    /* R, RG formats */
1129    {
1130       { GL_RED, GL_R8, 0 },
1131       { PIPE_FORMAT_R8_UNORM, 0 }
1132    },
1133    {
1134       { GL_RG, GL_RG8, 0 },
1135       { PIPE_FORMAT_R8G8_UNORM, 0 }
1136    },
1137    {
1138       { GL_R16, 0 },
1139       { PIPE_FORMAT_R16_UNORM, 0 }
1140    },
1141    {
1142       { GL_RG16, 0 },
1143       { PIPE_FORMAT_R16G16_UNORM, 0 }
1144    },
1145
1146    /* compressed R, RG formats */
1147    {
1148       { GL_COMPRESSED_RED, GL_COMPRESSED_RED_RGTC1, 0 },
1149       { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_R8_UNORM, 0 }
1150    },
1151    {
1152       { GL_COMPRESSED_SIGNED_RED_RGTC1, 0 },
1153       { PIPE_FORMAT_RGTC1_SNORM, 0 }
1154    },
1155    {
1156       { GL_COMPRESSED_RG, GL_COMPRESSED_RG_RGTC2, 0 },
1157       { PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_R8G8_UNORM, 0 }
1158    },
1159    {
1160       { GL_COMPRESSED_SIGNED_RG_RGTC2, 0 },
1161       { PIPE_FORMAT_RGTC2_SNORM, 0 }
1162    },
1163    {
1164       { GL_COMPRESSED_LUMINANCE, GL_COMPRESSED_LUMINANCE_LATC1_EXT, 0 },
1165       { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_L8_UNORM, 0 }
1166    },
1167    {
1168       { GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT, 0 },
1169       { PIPE_FORMAT_LATC1_SNORM, 0 }
1170    },
1171    {
1172       { GL_COMPRESSED_LUMINANCE_ALPHA, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT,
1173         GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI, 0 },
1174       { PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_L8A8_UNORM, 0 }
1175    },
1176    {
1177       { GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT, 0 },
1178       { PIPE_FORMAT_LATC2_SNORM, 0 }
1179    },
1180
1181    /* signed/unsigned integer formats.
1182     */
1183    {
1184       { GL_RED_INTEGER_EXT,
1185         GL_GREEN_INTEGER_EXT,
1186         GL_BLUE_INTEGER_EXT,
1187         GL_RGBA_INTEGER_EXT,
1188         GL_BGRA_INTEGER_EXT,
1189         GL_RGBA8I_EXT, 0 },
1190       { PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1191    },
1192    {
1193       { GL_RGB_INTEGER_EXT,
1194         GL_BGR_INTEGER_EXT,
1195         GL_RGB8I_EXT, 0 },
1196       { PIPE_FORMAT_R8G8B8_SINT,
1197         PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1198    },
1199    {
1200       { GL_ALPHA_INTEGER_EXT,
1201         GL_ALPHA8I_EXT, 0 },
1202       { PIPE_FORMAT_A8_SINT, 0 }
1203    },
1204    {
1205       { GL_ALPHA16I_EXT, 0 },
1206       { PIPE_FORMAT_A16_SINT, 0 }
1207    },
1208    {
1209       { GL_ALPHA32I_EXT, 0 },
1210       { PIPE_FORMAT_A32_SINT, 0 }
1211    },
1212    {
1213       { GL_ALPHA8UI_EXT, 0 },
1214       { PIPE_FORMAT_A8_UINT, 0 }
1215    },
1216    {
1217       { GL_ALPHA16UI_EXT, 0 },
1218       { PIPE_FORMAT_A16_UINT, 0 }
1219    },
1220    {
1221       { GL_ALPHA32UI_EXT, 0 },
1222       { PIPE_FORMAT_A32_UINT, 0 }
1223    },
1224    {
1225       { GL_INTENSITY8I_EXT, 0 },
1226       { PIPE_FORMAT_I8_SINT, 0 }
1227    },
1228    {
1229       { GL_INTENSITY16I_EXT, 0 },
1230       { PIPE_FORMAT_I16_SINT, 0 }
1231    },
1232    {
1233       { GL_INTENSITY32I_EXT, 0 },
1234       { PIPE_FORMAT_I32_SINT, 0 }
1235    },
1236    {
1237       { GL_INTENSITY8UI_EXT, 0 },
1238       { PIPE_FORMAT_I8_UINT, 0 }
1239    },
1240    {
1241       { GL_INTENSITY16UI_EXT, 0 },
1242       { PIPE_FORMAT_I16_UINT, 0 }
1243    },
1244    {
1245       { GL_INTENSITY32UI_EXT, 0 },
1246       { PIPE_FORMAT_I32_UINT, 0 }
1247    },
1248    {
1249       { GL_LUMINANCE8I_EXT, 0 },
1250       { PIPE_FORMAT_L8_SINT, 0 }
1251    },
1252    {
1253       { GL_LUMINANCE16I_EXT, 0 },
1254       { PIPE_FORMAT_L16_SINT, 0 }
1255    },
1256    {
1257       { GL_LUMINANCE32I_EXT, 0 },
1258       { PIPE_FORMAT_L32_SINT, 0 }
1259    },
1260    {
1261       { GL_LUMINANCE_INTEGER_EXT,
1262         GL_LUMINANCE8UI_EXT, 0 },
1263       { PIPE_FORMAT_L8_UINT, 0 }
1264    },
1265    {
1266       { GL_LUMINANCE16UI_EXT, 0 },
1267       { PIPE_FORMAT_L16_UINT, 0 }
1268    },
1269    {
1270       { GL_LUMINANCE32UI_EXT, 0 },
1271       { PIPE_FORMAT_L32_UINT, 0 }
1272    },
1273    {
1274       { GL_LUMINANCE_ALPHA_INTEGER_EXT,
1275         GL_LUMINANCE_ALPHA8I_EXT, 0 },
1276       { PIPE_FORMAT_L8A8_SINT, 0 }
1277    },
1278    {
1279       { GL_LUMINANCE_ALPHA16I_EXT, 0 },
1280       { PIPE_FORMAT_L16A16_SINT, 0 }
1281    },
1282    {
1283       { GL_LUMINANCE_ALPHA32I_EXT, 0 },
1284       { PIPE_FORMAT_L32A32_SINT, 0 }
1285    },
1286    {
1287       { GL_LUMINANCE_ALPHA8UI_EXT, 0 },
1288       { PIPE_FORMAT_L8A8_UINT, 0 }
1289    },
1290    {
1291       { GL_LUMINANCE_ALPHA16UI_EXT, 0 },
1292       { PIPE_FORMAT_L16A16_UINT, 0 }
1293    },
1294    {
1295       { GL_LUMINANCE_ALPHA32UI_EXT, 0 },
1296       { PIPE_FORMAT_L32A32_UINT, 0 }
1297    },
1298    {
1299       { GL_RGB16I_EXT, 0 },
1300       { PIPE_FORMAT_R16G16B16_SINT,
1301         PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1302    },
1303    {
1304       { GL_RGBA16I_EXT, 0 },
1305       { PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1306    },
1307    {
1308       { GL_RGB32I_EXT, 0 },
1309       { PIPE_FORMAT_R32G32B32_SINT,
1310         PIPE_FORMAT_R32G32B32A32_SINT, 0 },
1311    },
1312    {
1313       { GL_RGBA32I_EXT, 0 },
1314       { PIPE_FORMAT_R32G32B32A32_SINT, 0 }
1315    },
1316    {
1317       { GL_RGBA8UI_EXT, 0 },
1318       { PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1319    },
1320    {
1321       { GL_RGB8UI_EXT, 0 },
1322       { PIPE_FORMAT_R8G8B8_UINT,
1323         PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1324    },
1325    {
1326       { GL_RGB16UI_EXT, 0 },
1327       { PIPE_FORMAT_R16G16B16_UINT,
1328         PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1329    },
1330    {
1331       { GL_RGBA16UI_EXT, 0 },
1332       { PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1333    },
1334    {
1335       { GL_RGB32UI_EXT, 0},
1336       { PIPE_FORMAT_R32G32B32_UINT,
1337         PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1338    },
1339    {
1340       { GL_RGBA32UI_EXT, 0},
1341       { PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1342    },
1343    {
1344      { GL_R8I, 0},
1345      { PIPE_FORMAT_R8_SINT, 0},
1346    },
1347    {
1348      { GL_R16I, 0},
1349      { PIPE_FORMAT_R16_SINT, 0},
1350    },
1351    {
1352      { GL_R32I, 0},
1353      { PIPE_FORMAT_R32_SINT, 0},
1354    },
1355   {
1356      { GL_R8UI, 0},
1357      { PIPE_FORMAT_R8_UINT, 0},
1358    },
1359    {
1360      { GL_R16UI, 0},
1361      { PIPE_FORMAT_R16_UINT, 0},
1362    },
1363    {
1364      { GL_R32UI, 0},
1365      { PIPE_FORMAT_R32_UINT, 0},
1366    },
1367    {
1368      { GL_RG8I, 0},
1369      { PIPE_FORMAT_R8G8_SINT, 0},
1370    },
1371    {
1372      { GL_RG16I, 0},
1373      { PIPE_FORMAT_R16G16_SINT, 0},
1374    },
1375    {
1376      { GL_RG32I, 0},
1377      { PIPE_FORMAT_R32G32_SINT, 0},
1378    },
1379   {
1380      { GL_RG8UI, 0},
1381      { PIPE_FORMAT_R8G8_UINT, 0},
1382    },
1383    {
1384      { GL_RG16UI, 0},
1385      { PIPE_FORMAT_R16G16_UINT, 0},
1386    },
1387    {
1388      { GL_RG32UI, 0},
1389      { PIPE_FORMAT_R32G32_UINT, 0},
1390    },
1391    /* signed normalized formats */
1392    {
1393       { GL_RED_SNORM, GL_R8_SNORM, 0 },
1394       { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM,
1395         PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1396    },
1397    {
1398       { GL_R16_SNORM, 0 },
1399       { PIPE_FORMAT_R16_SNORM,
1400         PIPE_FORMAT_R16G16_SNORM,
1401         PIPE_FORMAT_R16G16B16A16_SNORM,
1402         PIPE_FORMAT_R8_SNORM,
1403         PIPE_FORMAT_R8G8_SNORM,
1404         PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1405    },
1406    {
1407       { GL_RG_SNORM, GL_RG8_SNORM, 0 },
1408       { PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1409    },
1410    {
1411       { GL_RG16_SNORM, 0 },
1412       { PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1413         PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1414    },
1415    {
1416       { GL_RGB_SNORM, GL_RGB8_SNORM, GL_RGBA_SNORM, GL_RGBA8_SNORM, 0 },
1417       { PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1418    },
1419    {
1420       { GL_RGB16_SNORM, GL_RGBA16_SNORM, 0 },
1421       { PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1422    },
1423    {
1424       { GL_ALPHA_SNORM, GL_ALPHA8_SNORM, 0 },
1425       { PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1426    },
1427    {
1428       { GL_ALPHA16_SNORM, 0 },
1429       { PIPE_FORMAT_A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1430         PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1431    },
1432    {
1433       { GL_LUMINANCE_SNORM, GL_LUMINANCE8_SNORM, 0 },
1434       { PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1435    },
1436    {
1437       { GL_LUMINANCE16_SNORM, 0 },
1438       { PIPE_FORMAT_L16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1439         PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1440    },
1441    {
1442       { GL_LUMINANCE_ALPHA_SNORM, GL_LUMINANCE8_ALPHA8_SNORM, 0 },
1443       { PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1444    },
1445    {
1446       { GL_LUMINANCE16_ALPHA16_SNORM, 0 },
1447       { PIPE_FORMAT_L16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1448         PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1449    },
1450    {
1451       { GL_INTENSITY_SNORM, GL_INTENSITY8_SNORM, 0 },
1452       { PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1453    },
1454    {
1455       { GL_INTENSITY16_SNORM, 0 },
1456       { PIPE_FORMAT_I16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1457         PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1458    },
1459    {
1460       { GL_RGB9_E5, 0 },
1461       { PIPE_FORMAT_R9G9B9E5_FLOAT, 0 }
1462    },
1463    {
1464       { GL_R11F_G11F_B10F, 0 },
1465       { PIPE_FORMAT_R11G11B10_FLOAT, 0 }
1466    }
1467 };
1468
1469
1470 /**
1471  * Return first supported format from the given list.
1472  */
1473 static enum pipe_format
1474 find_supported_format(struct pipe_screen *screen,
1475                       const enum pipe_format formats[],
1476                       enum pipe_texture_target target,
1477                       unsigned sample_count,
1478                       unsigned tex_usage)
1479 {
1480    uint i;
1481    for (i = 0; formats[i]; i++) {
1482       if (screen->is_format_supported(screen, formats[i], target,
1483                                       sample_count, tex_usage)) {
1484          return formats[i];
1485       }
1486    }
1487    return PIPE_FORMAT_NONE;
1488 }
1489
1490 struct exact_format_mapping
1491 {
1492    GLenum format;
1493    GLenum type;
1494    enum pipe_format pformat;
1495 };
1496
1497 static const struct exact_format_mapping rgba8888_tbl[] =
1498 {
1499    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_A8B8G8R8_UNORM },
1500    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_A8B8G8R8_UNORM },
1501    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_R8G8B8A8_UNORM },
1502    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_R8G8B8A8_UNORM },
1503    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_A8R8G8B8_UNORM },
1504    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_B8G8R8A8_UNORM },
1505    { GL_RGBA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_R8G8B8A8_UNORM },
1506    { GL_ABGR_EXT, GL_UNSIGNED_BYTE,               PIPE_FORMAT_A8B8G8R8_UNORM },
1507    { GL_BGRA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_B8G8R8A8_UNORM },
1508    { 0,           0,                              0                          }
1509 };
1510
1511 static const struct exact_format_mapping rgbx8888_tbl[] =
1512 {
1513    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_X8R8G8B8_UNORM },
1514    { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_B8G8R8X8_UNORM },
1515    { GL_BGRA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_B8G8R8X8_UNORM },
1516    /* No Mesa formats for these Gallium formats:
1517    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_X8B8G8R8_UNORM },
1518    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_X8B8G8R8_UNORM },
1519    { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_R8G8B8X8_UNORM },
1520    { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_R8G8B8X8_UNORM },
1521    { GL_RGBA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_R8G8B8X8_UNORM },
1522    { GL_ABGR_EXT, GL_UNSIGNED_BYTE,               PIPE_FORMAT_X8B8G8R8_UNORM },
1523    */
1524    { 0,           0,                              0                          }
1525 };
1526
1527 static const struct exact_format_mapping rgba1010102_tbl[] =
1528 {
1529    { GL_BGRA,     GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_B10G10R10A2_UNORM },
1530    /* No Mesa formats for these Gallium formats:
1531    { GL_RGBA,     GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_R10G10B10A2_UNORM },
1532    { GL_ABGR_EXT, GL_UNSIGNED_INT_10_10_10_2,     PIPE_FORMAT_R10G10B10A2_UNORM },
1533    { GL_ABGR_EXT, GL_UNSIGNED_INT,                PIPE_FORMAT_R10G10B10A2_UNORM },
1534    */
1535    { 0,           0,                              0                             }
1536 };
1537
1538 /**
1539  * If there is an exact pipe_format match for {internalFormat, format, type}
1540  * return that, otherwise return PIPE_FORMAT_NONE so we can do fuzzy matching.
1541  */
1542 static enum pipe_format
1543 find_exact_format(GLint internalFormat, GLenum format, GLenum type)
1544 {
1545    uint i;
1546    const struct exact_format_mapping* tbl;
1547
1548    if (format == GL_NONE || type == GL_NONE)
1549       return PIPE_FORMAT_NONE;
1550
1551    switch (internalFormat) {
1552    case 4:
1553    case GL_RGBA:
1554    case GL_RGBA8:
1555       tbl = rgba8888_tbl;
1556       break;
1557    case 3:
1558    case GL_RGB:
1559    case GL_RGB8:
1560       tbl = rgbx8888_tbl;
1561       break;
1562    case GL_RGB10_A2:
1563       tbl = rgba1010102_tbl;
1564       break;
1565    default:
1566       return PIPE_FORMAT_NONE;
1567    }
1568
1569    for (i = 0; tbl[i].format; i++)
1570       if (tbl[i].format == format && tbl[i].type == type)
1571          return tbl[i].pformat;
1572
1573    return PIPE_FORMAT_NONE;
1574 }
1575
1576 /**
1577  * Given an OpenGL internalFormat value for a texture or surface, return
1578  * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
1579  * This is called during glTexImage2D, for example.
1580  *
1581  * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus
1582  * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if
1583  * we want render-to-texture ability.
1584  *
1585  * \param internalFormat  the user value passed to glTexImage2D
1586  * \param target  one of PIPE_TEXTURE_x
1587  * \param bindings  bitmask of PIPE_BIND_x flags.
1588  */
1589 enum pipe_format
1590 st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
1591                  GLenum format, GLenum type,
1592                  enum pipe_texture_target target, unsigned sample_count,
1593                  unsigned bindings)
1594 {
1595    GET_CURRENT_CONTEXT(ctx); /* XXX this should be a function parameter */
1596    int i, j;
1597    enum pipe_format pf;
1598
1599    /* can't render to compressed formats at this time */
1600    if (_mesa_is_compressed_format(ctx, internalFormat)
1601        && (bindings & ~PIPE_BIND_SAMPLER_VIEW)) {
1602       return PIPE_FORMAT_NONE;
1603    }
1604
1605    /* search for exact matches */
1606    pf = find_exact_format(internalFormat, format, type);
1607    if (pf != PIPE_FORMAT_NONE &&
1608        screen->is_format_supported(screen, pf,
1609                                    target, sample_count, bindings))
1610       return pf;
1611
1612    /* search table for internalFormat */
1613    for (i = 0; i < Elements(format_map); i++) {
1614       const struct format_mapping *mapping = &format_map[i];
1615       for (j = 0; mapping->glFormats[j]; j++) {
1616          if (mapping->glFormats[j] == internalFormat) {
1617             /* Found the desired internal format.  Find first pipe format
1618              * which is supported by the driver.
1619              */
1620             return find_supported_format(screen, mapping->pipeFormats,
1621                                          target, sample_count, bindings);
1622          }
1623       }
1624    }
1625
1626    _mesa_problem(NULL, "unhandled format!\n");
1627    return PIPE_FORMAT_NONE;
1628 }
1629
1630
1631 /**
1632  * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
1633  */
1634 enum pipe_format
1635 st_choose_renderbuffer_format(struct pipe_screen *screen,
1636                               GLenum internalFormat, unsigned sample_count)
1637 {
1638    uint usage;
1639    if (_mesa_is_depth_or_stencil_format(internalFormat))
1640       usage = PIPE_BIND_DEPTH_STENCIL;
1641    else
1642       usage = PIPE_BIND_RENDER_TARGET;
1643    return st_choose_format(screen, internalFormat, GL_NONE, GL_NONE, PIPE_TEXTURE_2D,
1644                            sample_count, usage);
1645 }
1646
1647
1648 gl_format
1649 st_ChooseTextureFormat_renderable(struct gl_context *ctx, GLint internalFormat,
1650                                   GLenum format, GLenum type, GLboolean renderable)
1651 {
1652    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
1653    enum pipe_format pFormat;
1654    uint bindings;
1655
1656    (void) format;
1657    (void) type;
1658
1659    /* GL textures may wind up being render targets, but we don't know
1660     * that in advance.  Specify potential render target flags now.
1661     */
1662    bindings = PIPE_BIND_SAMPLER_VIEW;
1663    if (renderable) {
1664       if (_mesa_is_depth_or_stencil_format(internalFormat))
1665          bindings |= PIPE_BIND_DEPTH_STENCIL;
1666       else
1667          bindings |= PIPE_BIND_RENDER_TARGET;
1668    }
1669
1670    pFormat = st_choose_format(screen, internalFormat, format, type,
1671                               PIPE_TEXTURE_2D, 0, bindings);
1672
1673    if (pFormat == PIPE_FORMAT_NONE) {
1674       /* try choosing format again, this time without render target bindings */
1675       pFormat = st_choose_format(screen, internalFormat, format, type,
1676                                  PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);
1677    }
1678
1679    if (pFormat == PIPE_FORMAT_NONE) {
1680       /* no luck at all */
1681       return MESA_FORMAT_NONE;
1682    }
1683
1684    return st_pipe_format_to_mesa_format(pFormat);
1685 }
1686
1687
1688 /**
1689  * Called via ctx->Driver.ChooseTextureFormat().
1690  */
1691 gl_format
1692 st_ChooseTextureFormat(struct gl_context *ctx, GLint internalFormat,
1693                        GLenum format, GLenum type)
1694 {
1695    boolean want_renderable =
1696       internalFormat == 3 || internalFormat == 4 ||
1697       internalFormat == GL_RGB || internalFormat == GL_RGBA ||
1698       internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||
1699       internalFormat == GL_BGRA;
1700
1701    return st_ChooseTextureFormat_renderable(ctx, internalFormat,
1702                                             format, type, want_renderable);
1703 }
1704
1705 /**
1706  * Test if a gallium format is equivalent to a GL format/type.
1707  */
1708 GLboolean
1709 st_equal_formats(enum pipe_format pFormat, GLenum format, GLenum type)
1710 {
1711    switch (pFormat) {
1712    case PIPE_FORMAT_A8B8G8R8_UNORM:
1713       return format == GL_RGBA && type == GL_UNSIGNED_BYTE;
1714    case PIPE_FORMAT_A8R8G8B8_UNORM:
1715       return format == GL_BGRA && type == GL_UNSIGNED_BYTE;
1716    case PIPE_FORMAT_B5G6R5_UNORM:
1717       return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5;
1718    /* XXX more combos... */
1719    default:
1720       return GL_FALSE;
1721    }
1722 }
1723
1724 GLboolean
1725 st_sampler_compat_formats(enum pipe_format format1, enum pipe_format format2)
1726 {
1727    if (format1 == format2)
1728       return GL_TRUE;
1729
1730    if (format1 == PIPE_FORMAT_B8G8R8A8_UNORM &&
1731        format2 == PIPE_FORMAT_B8G8R8X8_UNORM)
1732       return GL_TRUE;
1733
1734    if (format1 == PIPE_FORMAT_B8G8R8X8_UNORM &&
1735        format2 == PIPE_FORMAT_B8G8R8A8_UNORM)
1736       return GL_TRUE;
1737
1738    if (format1 == PIPE_FORMAT_A8B8G8R8_UNORM &&
1739        format2 == PIPE_FORMAT_X8B8G8R8_UNORM)
1740       return GL_TRUE;
1741
1742    if (format1 == PIPE_FORMAT_X8B8G8R8_UNORM &&
1743        format2 == PIPE_FORMAT_A8B8G8R8_UNORM)
1744       return GL_TRUE;
1745
1746    if (format1 == PIPE_FORMAT_A8R8G8B8_UNORM &&
1747        format2 == PIPE_FORMAT_X8R8G8B8_UNORM)
1748       return GL_TRUE;
1749
1750    if (format1 == PIPE_FORMAT_X8R8G8B8_UNORM &&
1751        format2 == PIPE_FORMAT_A8R8G8B8_UNORM)
1752       return GL_TRUE;
1753
1754    return GL_FALSE;
1755 }
1756
1757
1758
1759 /**
1760  * This is used for translating texture border color and the clear
1761  * color.  For example, the clear color is interpreted according to
1762  * the renderbuffer's base format.  For example, if clearing a
1763  * GL_LUMINANCE buffer, we'll return colorOut[0] = colorOut[1] =
1764  * colorOut[2] = colorIn[0].
1765  * Similarly for texture border colors.
1766  */
1767 void
1768 st_translate_color(const GLfloat colorIn[4], GLenum baseFormat,
1769                    GLfloat colorOut[4])
1770 {
1771    switch (baseFormat) {
1772    case GL_RED:
1773       colorOut[0] = colorIn[0];
1774       colorOut[1] = 0.0F;
1775       colorOut[2] = 0.0F;
1776       colorOut[3] = 1.0F;
1777       break;
1778    case GL_RG:
1779       colorOut[0] = colorIn[0];
1780       colorOut[1] = colorIn[1];
1781       colorOut[2] = 0.0F;
1782       colorOut[3] = 1.0F;
1783       break;
1784    case GL_RGB:
1785       colorOut[0] = colorIn[0];
1786       colorOut[1] = colorIn[1];
1787       colorOut[2] = colorIn[2];
1788       colorOut[3] = 1.0F;
1789       break;
1790    case GL_ALPHA:
1791       colorOut[0] = colorOut[1] = colorOut[2] = 0.0;
1792       colorOut[3] = colorIn[3];
1793       break;
1794    case GL_LUMINANCE:
1795       colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
1796       colorOut[3] = 1.0;
1797       break;
1798    case GL_LUMINANCE_ALPHA:
1799       colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
1800       colorOut[3] = colorIn[3];
1801       break;
1802    case GL_INTENSITY:
1803       colorOut[0] = colorOut[1] = colorOut[2] = colorOut[3] = colorIn[0];
1804       break;
1805    default:
1806       COPY_4V(colorOut, colorIn);
1807    }
1808 }