simgear/screen/extensions.hxx

   1 /*
   2  *
   3  * Copyright (c) 2001 César Blecua Udías    All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included
  13  * in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  18  * CESAR BLECUA UDIAS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  19  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  20  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  */
  24 #ifndef __SG_EXTENSIONS_HXX
  25 #define __SG_EXTENSIONS_HXX 1
  26
  27 #if defined(__CYGWIN__) && !defined(WIN32) /* && !defined(USING_X) */
  28 #define WIN32
  29 #endif
  30
  31 #if defined(WIN32)  /* MINGW and MSC predefine WIN32 */
  32 # include <windows.h>
  33 #endif
  34
  35 #if !defined(WIN32)
  36 # include <dlfcn.h>
  37 #endif
  38
  39 #include <simgear/compiler.h>
  40
  41 #include SG_GL_H
  42
  43
  44 #if defined(__cplusplus)
  45 extern "C" {
  46 #endif
  47
  48 #ifndef APIENTRY
  49 #define APIENTRY
  50 #endif
  51
  52     // static bool SGSearchExtensionsString(char *extString, char *extName);
  53 bool SGIsOpenGLExtensionSupported(char *extName);
  54
  55 #ifdef __APPLE__
  56   // don't use an inline function for symbol lookup, since it is too big
  57   void* macosxGetGLProcAddress(const char *func);
  58
  59 #elif !defined( WIN32 )
  60
  61   void *SGGetGLProcAddress(const char *func);
  62
  63 #endif
  64
  65 inline void (*SGLookupFunction(const char *func))()
  66 {
  67 #if defined( WIN32 )
  68     return (void (*)()) wglGetProcAddress(func);
  69
  70 #elif defined( __APPLE__ )
  71     return (void (*)()) macosxGetGLProcAddress(func);
  72
  73 #else // UNIX
  74
  75     return (void (*)()) SGGetGLProcAddress(func);
  76 #endif
  77 }
  78
  79 /*
  80  * OpenGL 1.2 and 1.3 enumerants
  81  */
  82
  83 #ifndef GL_VERSION_1_2
  84 #define GL_CLAMP_TO_EDGE                                        0x812F
  85 #define GL_TEXTURE_WRAP_R                                       0x8072
  86 #define GL_BLEND_EQUATION                                       0x8009
  87 #define GL_MIN                                                  0x8007
  88 #define GL_MAX                                                  0x8008
  89 #define GL_FUNC_ADD                                             0x8006
  90 #define GL_FUNC_SUBTRACT                                        0x800A
  91 #define GL_FUNC_REVERSE_SUBTRACT                                0x800B
  92 #define GL_BLEND_COLOR                                          0x8005
  93 #define GL_CONSTANT_COLOR                                       0x8001
  94 #define GL_ONE_MINUS_CONSTANT_COLOR                             0x8002
  95 #define GL_CONSTANT_ALPHA                                       0x8003
  96 #define GL_ONE_MINUS_CONSTANT_ALPHA                             0x8004
  97 #endif
  98
  99 typedef void (APIENTRY * glBlendEquationProc) (GLenum mode );
 100 typedef void (APIENTRY * glBlendColorProc) (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha );
 101
 102
 103 /* OpenGL extension declarations */
 104
 105 /*
 106  * glPointParameterf and glPointParameterfv
 107  */
 108 #ifndef GL_EXT_point_parameters
 109 #define GL_EXT_point_parameters 1
 110 #define GL_POINT_SIZE_MIN_EXT                                   0x8126
 111 #define GL_DISTANCE_ATTENUATION_EXT                             0x8129
 112 #endif
 113
 114 #ifndef GL_ARB_point_parameters
 115 #define GL_ARB_point_parameters 1
 116 #define GL_POINT_SIZE_MIN_ARB                                   0x8126
 117 #define GL_DISTANCE_ATTENUATION_ARB                             0x8129
 118 #endif
 119
 120 typedef void (APIENTRY * glPointParameterfProc)(GLenum pname, GLfloat param);
 121 typedef void (APIENTRY * glPointParameterfvProc)(GLenum pname, const GLfloat *params);
 122
 123 /*
 124  * glActiveTextureARB
 125  */
 126
 127 #ifndef GL_ARB_multitexture
 128 #define GL_ARB_multitexture 1
 129 #define GL_TEXTURE0_ARB                                         0x84C0
 130 #define GL_TEXTURE1_ARB                                         0x84C1
 131 #define GL_TEXTURE2_ARB                                         0x84C2
 132 #define GL_TEXTURE3_ARB                                         0x84C3
 133 #define GL_TEXTURE4_ARB                                         0x84C4
 134 #define GL_TEXTURE5_ARB                                         0x84C5
 135 #define GL_TEXTURE6_ARB                                         0x84C6
 136 #define GL_TEXTURE7_ARB                                         0x84C7
 137 #define GL_TEXTURE8_ARB                                         0x84C8
 138 #define GL_TEXTURE9_ARB                                         0x84C9
 139 #define GL_TEXTURE10_ARB                                        0x84CA
 140 #define GL_TEXTURE11_ARB                                        0x84CB
 141 #define GL_TEXTURE12_ARB                                        0x84CC
 142 #define GL_TEXTURE13_ARB                                        0x84CD
 143 #define GL_TEXTURE14_ARB                                        0x84CE
 144 #define GL_TEXTURE15_ARB                                        0x84CF
 145 #define GL_TEXTURE16_ARB                                        0x84D0
 146 #define GL_TEXTURE17_ARB                                        0x84D1
 147 #define GL_TEXTURE18_ARB                                        0x84D2
 148 #define GL_TEXTURE19_ARB                                        0x84D3
 149 #define GL_TEXTURE20_ARB                                        0x84D4
 150 #define GL_TEXTURE21_ARB                                        0x84D5
 151 #define GL_TEXTURE22_ARB                                        0x84D6
 152 #define GL_TEXTURE23_ARB                                        0x84D7
 153 #define GL_TEXTURE24_ARB                                        0x84D8
 154 #define GL_TEXTURE25_ARB                                        0x84D9
 155 #define GL_TEXTURE26_ARB                                        0x84DA
 156 #define GL_TEXTURE27_ARB                                        0x84DB
 157 #define GL_TEXTURE28_ARB                                        0x84DC
 158 #define GL_TEXTURE29_ARB                                        0x84DD
 159 #define GL_TEXTURE30_ARB                                        0x84DE
 160 #define GL_TEXTURE31_ARB                                        0x84DF
 161 #define GL_ACTIVE_TEXTURE_ARB                                   0x84E0
 162 #define GL_CLIENT_ACTIVE_TEXTURE_ARB                            0x84E1
 163 #define GL_MAX_TEXTURE_UNITS_ARB                                0x84E2
 164 #endif
 165
 166 typedef void (APIENTRY * glActiveTextureProc)(GLenum texture);
 167 typedef void (APIENTRY * glClientActiveTextureProc)(GLenum texture);
 168
 169 /*
 170  * GL_EXT_separate_specular_color
 171  */
 172
 173 #ifndef GL_LIGHT_MODEL_COLOR_CONTROL
 174 #define GL_LIGHT_MODEL_COLOR_CONTROL                            0x81F8
 175 #define GL_SINGLE_COLOR                                         0x81F9
 176 #define GL_SEPARATE_SPECULAR_COLOR                              0x81FA
 177 #endif
 178
 179 /*
 180  * GL_ARB_texture_cube_map
 181  */
 182
 183 #ifndef GL_ARB_texture_cube_map
 184 #define GL_ARB_texture_cube_map 1
 185 #define GL_NORMAL_MAP_ARB                                       0x8511
 186 #define GL_REFLECTION_MAP_ARB                                   0x8512
 187 #define GL_TEXTURE_CUBE_MAP_ARB                                 0x8513
 188 #define GL_TEXTURE_BINDING_CUBE_MAP_ARB                         0x8514
 189 #define GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB                      0x8515
 190 #define GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB                      0x8516
 191 #define GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB                      0x8517
 192 #define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB                      0x8518
 193 #define GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB                      0x8519
 194 #define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB                      0x851A
 195 #define GL_PROXY_TEXTURE_CUBE_MAP_ARB                           0x851B
 196 #define GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB                        0x851C
 197 #endif
 198
 199 /*
 200  * GL_ARB_texture_env_combine
 201  */
 202
 203 #ifndef GL_ARB_texture_env_combine
 204 #define GL_ARB_texture_env_combine 1
 205 #define GL_COMBINE_ARB                                          0x8570
 206 #define GL_COMBINE_RGB_ARB                                      0x8571
 207 #define GL_COMBINE_ALPHA_ARB                                    0x8572
 208 #define GL_RGB_SCALE_ARB                                        0x8573
 209 #define GL_ADD_SIGNED_ARB                                       0x8574
 210 #define GL_INTERPOLATE_ARB                                      0x8575
 211 #define GL_CONSTANT_ARB                                         0x8576
 212 #define GL_PRIMARY_COLOR_ARB                                    0x8577
 213 #define GL_PREVIOUS_ARB                                         0x8578
 214 #define GL_SOURCE0_RGB_ARB                                      0x8580
 215 #define GL_SOURCE1_RGB_ARB                                      0x8581
 216 #define GL_SOURCE2_RGB_ARB                                      0x8582
 217 #define GL_SOURCE0_ALPHA_ARB                                    0x8588
 218 #define GL_SOURCE1_ALPHA_ARB                                    0x8589
 219 #define GL_SOURCE2_ALPHA_ARB                                    0x858A
 220 #define GL_OPERAND0_RGB_ARB                                     0x8590
 221 #define GL_OPERAND1_RGB_ARB                                     0x8591
 222 #define GL_OPERAND2_RGB_ARB                                     0x8592
 223 #define GL_OPERAND0_ALPHA_ARB                                   0x8598
 224 #define GL_OPERAND1_ALPHA_ARB                                   0x8599
 225 #define GL_OPERAND2_ALPHA_ARB                                   0x859A
 226 #endif
 227
 228 /*
 229  * GL_ARB_texture_env_dot3
 230  */
 231
 232 #ifndef GL_ARB_texture_env_dot3
 233 #define GL_ARB_texture_env_dot3 1
 234 #define GL_DOT3_RGB_ARB                                         0x86AE
 235 #define GL_DOT3_RGBA_ARB                                        0x86AF
 236 #endif
 237
 238 /*
 239  * ARB_depth_texture
 240  */
 241 #ifndef GL_ARB_depth_texture
 242 #define GL_ARB_depth_texture 1
 243 #define GL_DEPTH_COMPONENT16_ARB                                0x81A5
 244 #define GL_DEPTH_COMPONENT24_ARB                                0x81A6
 245 #define GL_DEPTH_COMPONENT32_ARB                                0x81A7
 246 #define GL_TEXTURE_DEPTH_SIZE_ARB                               0x884A
 247 #define GL_DEPTH_TEXTURE_MODE_ARB                               0x884B
 248 #endif
 249
 250 /*
 251  * ARB_multisample
 252  */
 253 #ifndef GL_ARB_multisample
 254 #define GL_ARB_multisample 1
 255 #define GL_MULTISAMPLE_ARB                                      0x809D
 256 #define GL_SAMPLE_ALPHA_TO_COVERAGE_ARB                         0x809E
 257 #define GL_SAMPLE_ALPHA_TO_ONE_ARB                              0x809F
 258 #define GL_SAMPLE_COVERAGE_ARB                                  0x80A0
 259 #define GL_SAMPLE_BUFFERS_ARB                                   0x80A8
 260 #define GL_SAMPLES_ARB                                          0x80A9
 261 #define GL_SAMPLE_COVERAGE_VALUE_ARB                            0x80AA
 262 #define GL_SAMPLE_COVERAGE_INVERT_ARB                           0x80AB
 263 #define GL_MULTISAMPLE_BIT_ARB                                  0x20000000
 264 #define WGL_SAMPLE_BUFFERS_ARB                                  0x2041
 265 #define WGL_SAMPLES_ARB                                         0x2042
 266
 267 #endif
 268
 269
 270
 271 /* WGL spcific OpenGL extenstions */
 272 #ifdef WIN32
 273
 274 /*
 275  * ARB_pbuffer
 276  */
 277 #ifndef WGL_ARB_pbuffer
 278 #define WGL_ARB_pbuffer 1
 279 #define WGL_DRAW_TO_PBUFFER_ARB                                 0x202D
 280 #define WGL_MAX_PBUFFER_PIXELS_ARB                              0x202E
 281 #define WGL_MAX_PBUFFER_WIDTH_ARB                               0x202F
 282 #define WGL_MAX_PBUFFER_HEIGHT_ARB                              0x2030
 283 #define WGL_PBUFFER_LARGEST_ARB                                 0x2033
 284 #define WGL_PBUFFER_WIDTH_ARB                                   0x2034
 285 #define WGL_PBUFFER_HEIGHT_ARB                                  0x2035
 286 #define WGL_PBUFFER_LOST_ARB                                    0x2036
 287 DECLARE_HANDLE(HPBUFFERARB);
 288 typedef HPBUFFERARB (APIENTRY * wglCreatePbufferARBProc) (HDC hDC, int iPixelFormat, int iWidth, int iHeight, const int *piAttribList);
 289 typedef HDC (APIENTRY * wglGetPbufferDCARBProc) (HPBUFFERARB hPbuffer);
 290 typedef int (APIENTRY * wglReleasePbufferDCARBProc) (HPBUFFERARB hPbuffer, HDC hDC);
 291 typedef BOOL (APIENTRY * wglDestroyPbufferARBProc) (HPBUFFERARB hPbuffer);
 292 typedef BOOL (APIENTRY * wglQueryPbufferARBProc) (HPBUFFERARB hPbuffer, int iAttribute, int *piValue);
 293 #endif
 294
 295
 296 /*
 297  * ARB_pixel_format
 298  */
 299 #ifndef WGL_ARB_pixel_format
 300 #define WGL_ARB_pixel_format 1
 301 #define WGL_NUMBER_PIXEL_FORMATS_ARB                            0x2000
 302 #define WGL_DRAW_TO_WINDOW_ARB                                  0x2001
 303 #define WGL_DRAW_TO_BITMAP_ARB                                  0x2002
 304 #define WGL_ACCELERATION_ARB                                    0x2003
 305 #define WGL_NEED_PALETTE_ARB                                    0x2004
 306 #define WGL_NEED_SYSTEM_PALETTE_ARB                             0x2005
 307 #define WGL_SWAP_LAYER_BUFFERS_ARB                              0x2006
 308 #define WGL_SWAP_METHOD_ARB                                     0x2007
 309 #define WGL_NUMBER_OVERLAYS_ARB                                 0x2008
 310 #define WGL_NUMBER_UNDERLAYS_ARB                                0x2009
 311 #define WGL_TRANSPARENT_ARB                                     0x200A
 312 #define WGL_SHARE_DEPTH_ARB                                     0x200C
 313 #define WGL_SHARE_STENCIL_ARB                                   0x200D
 314 #define WGL_SHARE_ACCUM_ARB                                     0x200E
 315 #define WGL_SUPPORT_GDI_ARB                                     0x200F
 316 #define WGL_SUPPORT_OPENGL_ARB                                  0x2010
 317 #define WGL_DOUBLE_BUFFER_ARB                                   0x2011
 318 #define WGL_STEREO_ARB                                          0x2012
 319 #define WGL_PIXEL_TYPE_ARB                                      0x2013
 320 #define WGL_COLOR_BITS_ARB                                      0x2014
 321 #define WGL_RED_BITS_ARB                                        0x2015
 322 #define WGL_RED_SHIFT_ARB                                       0x2016
 323 #define WGL_GREEN_BITS_ARB                                      0x2017
 324 #define WGL_GREEN_SHIFT_ARB                                     0x2018
 325 #define WGL_BLUE_BITS_ARB                                       0x2019
 326 #define WGL_BLUE_SHIFT_ARB                                      0x201A
 327 #define WGL_ALPHA_BITS_ARB                                      0x201B
 328 #define WGL_ALPHA_SHIFT_ARB                                     0x201C
 329 #define WGL_ACCUM_BITS_ARB                                      0x201D
 330 #define WGL_ACCUM_RED_BITS_ARB                                  0x201E
 331 #define WGL_ACCUM_GREEN_BITS_ARB                                0x201F
 332 #define WGL_ACCUM_BLUE_BITS_ARB                                 0x2020
 333 #define WGL_ACCUM_ALPHA_BITS_ARB                                0x2021
 334 #define WGL_DEPTH_BITS_ARB                                      0x2022
 335 #define WGL_STENCIL_BITS_ARB                                    0x2023
 336 #define WGL_AUX_BUFFERS_ARB                                     0x2024
 337 #define WGL_NO_ACCELERATION_ARB                                 0x2025
 338 #define WGL_GENERIC_ACCELERATION_ARB                            0x2026
 339 #define WGL_FULL_ACCELERATION_ARB                               0x2027
 340 #define WGL_SWAP_EXCHANGE_ARB                                   0x2028
 341 #define WGL_SWAP_COPY_ARB                                       0x2029
 342 #define WGL_SWAP_UNDEFINED_ARB                                  0x202A
 343 #define WGL_TYPE_RGBA_ARB                                       0x202B
 344 #define WGL_TYPE_COLORINDEX_ARB                                 0x202C
 345 #define WGL_TRANSPARENT_RED_VALUE_ARB                           0x2037
 346 #define WGL_TRANSPARENT_GREEN_VALUE_ARB                         0x2038
 347 #define WGL_TRANSPARENT_BLUE_VALUE_ARB                          0x2039
 348 #define WGL_TRANSPARENT_ALPHA_VALUE_ARB                         0x203A
 349 #define WGL_TRANSPARENT_INDEX_VALUE_ARB                         0x203B
 350 typedef BOOL (APIENTRY * wglGetPixelFormatAttribivARBProc) (HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, int *piValues);
 351 typedef BOOL (APIENTRY * wglGetPixelFormatAttribfvARBProc) (HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, FLOAT *pfValues);
 352 typedef BOOL (APIENTRY * wglChoosePixelFormatARBProc) (HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats);
 353 #endif
 354
 355 /*
 356  * ARB_render_texture
 357  */
 358 #ifndef WGL_ARB_render_texture
 359 #define WGL_ARB_render_texture 1
 360
 361 #define WGL_BIND_TO_TEXTURE_RGB_ARB                             0x2070
 362 #define WGL_BIND_TO_TEXTURE_RGBA_ARB                            0x2071
 363 #define WGL_TEXTURE_FORMAT_ARB                                  0x2072
 364 #define WGL_TEXTURE_TARGET_ARB                                  0x2073
 365 #define WGL_MIPMAP_TEXTURE_ARB                                  0x2074
 366 #define WGL_TEXTURE_RGB_ARB                                     0x2075
 367 #define WGL_TEXTURE_RGBA_ARB                                    0x2076
 368 #define WGL_NO_TEXTURE_ARB                                      0x2077
 369 #define WGL_TEXTURE_CUBE_MAP_ARB                                0x2078
 370 #define WGL_TEXTURE_1D_ARB                                      0x2079
 371 #define WGL_TEXTURE_2D_ARB                                      0x207A
 372 #define WGL_NO_TEXTURE_ARB                                      0x2077
 373 #define WGL_MIPMAP_LEVEL_ARB                                    0x207B
 374 #define WGL_CUBE_MAP_FACE_ARB                                   0x207C
 375 #define WGL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB                     0x207D
 376 #define WGL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB                     0x207E
 377 #define WGL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB                     0x207F
 378 #define WGL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB                     0x2080
 379 #define WGL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB                     0x2081
 380 #define WGL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB                     0x2082
 381 #define WGL_FRONT_LEFT_ARB                                      0x2083
 382 #define WGL_FRONT_RIGHT_ARB                                     0x2084
 383 #define WGL_BACK_LEFT_ARB                                       0x2085
 384 #define WGL_BACK_RIGHT_ARB                                      0x2086
 385 #define WGL_AUX0_ARB                                            0x2087
 386 #define WGL_AUX1_ARB                                            0x2088
 387 #define WGL_AUX2_ARB                                            0x2089
 388 #define WGL_AUX3_ARB                                            0x208A
 389 #define WGL_AUX4_ARB                                            0x208B
 390 #define WGL_AUX5_ARB                                            0x208C
 391 #define WGL_AUX6_ARB                                            0x208D
 392 #define WGL_AUX7_ARB                                            0x208E
 393 #define WGL_AUX8_ARB                                            0x208F
 394 #define WGL_AUX9_ARB                                            0x2090
 395 typedef BOOL (APIENTRY * wglBindTexImageARBProc) (HPBUFFERARB hPbuffer, int iBuffer);
 396 typedef BOOL (APIENTRY * wglReleaseTexImageARBProc) (HPBUFFERARB hPbuffer, int iBuffer);
 397 typedef BOOL (APIENTRY * wglSetPbufferAttribARBProc) (HPBUFFERARB hPbuffer, const int *piAttribList);
 398 #endif
 399
 400 #endif /* WIN32 */
 401
 402
 403 /* NVIDIA specific extension */
 404
 405 /*
 406  * NV_texture_rectangle
 407  */
 408
 409 #ifndef GL_NV_texture_rectangle
 410 #define GL_NV_texture_rectangle 1
 411 #define GL_TEXTURE_RECTANGLE_NV                                 0x84F5
 412 #define GL_TEXTURE_BINDING_RECTANGLE_NV                         0x84F6
 413 #define GL_PROXY_TEXTURE_RECTANGLE_NV                           0x84F7
 414 #define GL_MAX_RECTANGLE_TEXTURE_SIZE_NV                        0x84F8
 415 #endif
 416
 417 /*
 418  * WGL_NV_texture_rectangle
 419  */
 420
 421 #ifndef WGL_NV_texture_rectangle
 422 #define WGL_NV_texture_rectangle 1
 423 #define WGL_BIND_TO_TEXTURE_RECTANGLE_RGB_NV                    0x20A0
 424 #define WGL_BIND_TO_TEXTURE_RECTANGLE_RGBA_NV                   0x20A1
 425 #define WGL_TEXTURE_RECTANGLE_NV                                0x20A2
 426 #endif
 427
 428 /*
 429  * NV_render_depth_texture
 430  */
 431
 432 #ifndef WGL_NV_render_depth_texture
 433 #define WGL_NV_render_depth_texture 1
 434 #define WGL_NO_TEXTURE_ARB                                      0x2077
 435 #define WGL_BIND_TO_TEXTURE_DEPTH_NV                            0x20A3
 436 #define WGL_BIND_TO_TEXTURE_RECTANGLE_DEPTH_NV                  0x20A4
 437 #define WGL_DEPTH_TEXTURE_FORMAT_NV                             0x20A5
 438 #define WGL_TEXTURE_DEPTH_COMPONENT_NV                          0x20A6
 439 #define WGL_DEPTH_COMPONENT_NV                                  0x20A7
 440 #endif
 441
 442 /*
 443  * NV_float_buffer
 444  */
 445 #ifndef GL_NV_float_buffer
 446 #define GL_NV_float_buffer 1
 447 #define GL_FLOAT_R_NV                                           0x8880
 448 #define GL_FLOAT_RG_NV                                          0x8881
 449 #define GL_FLOAT_RGB_NV                                         0x8882
 450 #define GL_FLOAT_RGBA_NV                                        0x8883
 451 #define GL_FLOAT_R16_NV                                         0x8884
 452 #define GL_FLOAT_R32_NV                                         0x8885
 453 #define GL_FLOAT_RG16_NV                                        0x8886
 454 #define GL_FLOAT_RG32_NV                                        0x8887
 455 #define GL_FLOAT_RGB16_NV                                       0x8888
 456 #define GL_FLOAT_RGB32_NV                                       0x8889
 457 #define GL_FLOAT_RGBA16_NV                                      0x888A
 458 #define GL_FLOAT_RGBA32_NV                                      0x888B
 459 #define GL_TEXTURE_FLOAT_COMPONENTS_NV                          0x888C
 460 #define GL_FLOAT_CLEAR_COLOR_VALUE_NV                           0x888D
 461 #define GL_FLOAT_RGBA_MODE_NV                                   0x888E
 462 #endif
 463 #ifndef GLX_NV_float_buffer
 464 #define GLX_NV_float_buffer 1
 465 #define GLX_FLOAT_COMPONENTS_NV                                 0x20B0
 466 #define GLX_BIND_TO_TEXTURE_RECTANGLE_FLOAT_R_NV                0x20B1
 467 #define GLX_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RG_NV               0x20B2
 468 #define GLX_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGB_NV              0x20B3
 469 #define GLX_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGBA_NV             0x20B4
 470 #define GLX_TEXTURE_FLOAT_R_NV                                  0x20B5
 471 #define GLX_TEXTURE_FLOAT_RG_NV                                 0x20B6
 472 #define GLX_TEXTURE_FLOAT_RGB_NV                                0x20B7
 473 #define GLX_TEXTURE_FLOAT_RGBA_NV                               0x20B8
 474 #endif
 475 #ifndef WGL_NV_float_buffer
 476 #define WGL_NV_float_buffer 1
 477 #define WGL_FLOAT_COMPONENTS_NV                                 0x20B0
 478 #define WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_R_NV                0x20B1
 479 #define WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RG_NV               0x20B2
 480 #define WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGB_NV              0x20B3
 481 #define WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGBA_NV             0x20B4
 482 #define WGL_TEXTURE_FLOAT_R_NV                                  0x20B5
 483 #define WGL_TEXTURE_FLOAT_RG_NV                                 0x20B6
 484 #define WGL_TEXTURE_FLOAT_RGB_NV                                0x20B7
 485 #define WGL_TEXTURE_FLOAT_RGBA_NV                               0x20B8
 486 #endif
 487
 488
 489 /* ATI specific extension */
 490
 491 /*
 492  * ATI_pixel_format_float
 493  */
 494 #ifndef WGL_ATI_pixel_format_float
 495 #define WGL_ATI_pixel_format_float 1
 496 #define WGL_TYPE_RGBA_FLOAT_ATI                                 0x21A0
 497 #define GL_RGBA_FLOAT_MODE_ATI                                  0x8820
 498 #define GL_COLOR_CLEAR_UNCLAMPED_VALUE_ATI                      0x8835
 499 #endif
 500
 501 /*
 502  * ATI_texture_float
 503  */
 504 #ifndef GL_ATI_texture_float
 505 #define GL_ATI_texture_float 1
 506 #define GL_RGBA_FLOAT32_ATI                                     0x8814
 507 #define GL_RGB_FLOAT32_ATI                                      0x8815
 508 #define GL_ALPHA_FLOAT32_ATI                                    0x8816
 509 #define GL_INTENSITY_FLOAT32_ATI                                0x8817
 510 #define GL_LUMINANCE_FLOAT32_ATI                                0x8818
 511 #define GL_LUMINANCE_ALPHA_FLOAT32_ATI                          0x8819
 512 #define GL_RGBA_FLOAT16_ATI                                     0x881A
 513 #define GL_RGB_FLOAT16_ATI                                      0x881B
 514 #define GL_ALPHA_FLOAT16_ATI                                    0x881C
 515 #define GL_INTENSITY_FLOAT16_ATI                                0x881D
 516 #define GL_LUMINANCE_FLOAT16_ATI                                0x881E
 517 #define GL_LUMINANCE_ALPHA_FLOAT16_ATI                          0x881F
 518 #endif
 519
 520
 521 #if defined(__cplusplus)
 522 }
 523 #endif
 524
 525 #endif // !__SG_EXTENSIONS_HXX
 526