#ifndef __SG_EXTENSIONS_HXX
#define __SG_EXTENSIONS_HXX 1
-#if defined(__CYGWIN__) && !defined(WIN32) /* && !defined(USING_X) */
-#define WIN32
-#endif
-
-#if defined(WIN32) /* MINGW and MSC predefine WIN32 */
-# include <windows.h>
-#endif
-
-#if !defined(WIN32)
-# include <dlfcn.h>
-#endif
#include <simgear/compiler.h>
-#include SG_GL_H
-
-
-#if defined(__cplusplus)
-extern "C" {
-#endif
-
-#ifndef APIENTRY
-#define APIENTRY
-#endif
-
bool SGSearchExtensionsString(const char *extString, const char *extName);
-bool SGIsOpenGLExtensionSupported(char *extName);
-
-#ifdef __APPLE__
- // don't use an inline function for symbol lookup, since it is too big
- void* macosxGetGLProcAddress(const char *func);
-
-#elif !defined( WIN32 )
-
- void *SGGetGLProcAddress(const char *func);
-
-#endif
-
-inline void (*SGLookupFunction(const char *func))()
-{
-#if defined( WIN32 )
- return (void (*)()) wglGetProcAddress(func);
-
-#elif defined( __APPLE__ )
- return (void (*)()) macosxGetGLProcAddress(func);
-
-#else // UNIX
-
- return (void (*)()) SGGetGLProcAddress(func);
-#endif
-}
-
-/*
- * OpenGL 1.2 and 1.3 enumerants
- */
-
-#ifndef GL_VERSION_1_2
-#define GL_CLAMP_TO_EDGE 0x812F
-#define GL_TEXTURE_WRAP_R 0x8072
-#define GL_BLEND_EQUATION 0x8009
-#define GL_MIN 0x8007
-#define GL_MAX 0x8008
-#define GL_FUNC_ADD 0x8006
-#define GL_FUNC_SUBTRACT 0x800A
-#define GL_FUNC_REVERSE_SUBTRACT 0x800B
-#define GL_BLEND_COLOR 0x8005
-#define GL_CONSTANT_COLOR 0x8001
-#define GL_ONE_MINUS_CONSTANT_COLOR 0x8002
-#define GL_CONSTANT_ALPHA 0x8003
-#define GL_ONE_MINUS_CONSTANT_ALPHA 0x8004
-#endif
-
-typedef void (APIENTRY * glBlendEquationProc) (GLenum mode );
-typedef void (APIENTRY * glBlendColorProc) (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha );
-
-
-/* OpenGL extension declarations */
-
-/*
- * glPointParameterf and glPointParameterfv
- */
-#ifndef GL_EXT_point_parameters
-#define GL_EXT_point_parameters 1
-#define GL_POINT_SIZE_MIN_EXT 0x8126
-#define GL_DISTANCE_ATTENUATION_EXT 0x8129
-#endif
-
-#ifndef GL_ARB_point_parameters
-#define GL_ARB_point_parameters 1
-#define GL_POINT_SIZE_MIN_ARB 0x8126
-#define GL_DISTANCE_ATTENUATION_ARB 0x8129
-#endif
-
-typedef void (APIENTRY * glPointParameterfProc)(GLenum pname, GLfloat param);
-typedef void (APIENTRY * glPointParameterfvProc)(GLenum pname, const GLfloat *params);
-
-/*
- * glActiveTextureARB
- */
-
-#ifndef GL_ARB_multitexture
-#define GL_ARB_multitexture 1
-#define GL_TEXTURE0_ARB 0x84C0
-#define GL_TEXTURE1_ARB 0x84C1
-#define GL_TEXTURE2_ARB 0x84C2
-#define GL_TEXTURE3_ARB 0x84C3
-#define GL_TEXTURE4_ARB 0x84C4
-#define GL_TEXTURE5_ARB 0x84C5
-#define GL_TEXTURE6_ARB 0x84C6
-#define GL_TEXTURE7_ARB 0x84C7
-#define GL_TEXTURE8_ARB 0x84C8
-#define GL_TEXTURE9_ARB 0x84C9
-#define GL_TEXTURE10_ARB 0x84CA
-#define GL_TEXTURE11_ARB 0x84CB
-#define GL_TEXTURE12_ARB 0x84CC
-#define GL_TEXTURE13_ARB 0x84CD
-#define GL_TEXTURE14_ARB 0x84CE
-#define GL_TEXTURE15_ARB 0x84CF
-#define GL_TEXTURE16_ARB 0x84D0
-#define GL_TEXTURE17_ARB 0x84D1
-#define GL_TEXTURE18_ARB 0x84D2
-#define GL_TEXTURE19_ARB 0x84D3
-#define GL_TEXTURE20_ARB 0x84D4
-#define GL_TEXTURE21_ARB 0x84D5
-#define GL_TEXTURE22_ARB 0x84D6
-#define GL_TEXTURE23_ARB 0x84D7
-#define GL_TEXTURE24_ARB 0x84D8
-#define GL_TEXTURE25_ARB 0x84D9
-#define GL_TEXTURE26_ARB 0x84DA
-#define GL_TEXTURE27_ARB 0x84DB
-#define GL_TEXTURE28_ARB 0x84DC
-#define GL_TEXTURE29_ARB 0x84DD
-#define GL_TEXTURE30_ARB 0x84DE
-#define GL_TEXTURE31_ARB 0x84DF
-#define GL_ACTIVE_TEXTURE_ARB 0x84E0
-#define GL_CLIENT_ACTIVE_TEXTURE_ARB 0x84E1
-#define GL_MAX_TEXTURE_UNITS_ARB 0x84E2
-#endif
-
-typedef void (APIENTRY * glActiveTextureProc)(GLenum texture);
-typedef void (APIENTRY * glClientActiveTextureProc)(GLenum texture);
-
-/*
- * GL_EXT_separate_specular_color
- */
-
-#ifndef GL_LIGHT_MODEL_COLOR_CONTROL
-#define GL_LIGHT_MODEL_COLOR_CONTROL 0x81F8
-#define GL_SINGLE_COLOR 0x81F9
-#define GL_SEPARATE_SPECULAR_COLOR 0x81FA
-#endif
-
-/*
- * GL_ARB_texture_cube_map
- */
-
-#ifndef GL_ARB_texture_cube_map
-#define GL_ARB_texture_cube_map 1
-#define GL_NORMAL_MAP_ARB 0x8511
-#define GL_REFLECTION_MAP_ARB 0x8512
-#define GL_TEXTURE_CUBE_MAP_ARB 0x8513
-#define GL_TEXTURE_BINDING_CUBE_MAP_ARB 0x8514
-#define GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB 0x8515
-#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB 0x8516
-#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB 0x8517
-#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB 0x8518
-#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB 0x8519
-#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB 0x851A
-#define GL_PROXY_TEXTURE_CUBE_MAP_ARB 0x851B
-#define GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB 0x851C
-#endif
-
-/*
- * GL_ARB_texture_env_combine
- */
-
-#ifndef GL_ARB_texture_env_combine
-#define GL_ARB_texture_env_combine 1
-#define GL_COMBINE_ARB 0x8570
-#define GL_COMBINE_RGB_ARB 0x8571
-#define GL_COMBINE_ALPHA_ARB 0x8572
-#define GL_RGB_SCALE_ARB 0x8573
-#define GL_ADD_SIGNED_ARB 0x8574
-#define GL_INTERPOLATE_ARB 0x8575
-#define GL_CONSTANT_ARB 0x8576
-#define GL_PRIMARY_COLOR_ARB 0x8577
-#define GL_PREVIOUS_ARB 0x8578
-#define GL_SOURCE0_RGB_ARB 0x8580
-#define GL_SOURCE1_RGB_ARB 0x8581
-#define GL_SOURCE2_RGB_ARB 0x8582
-#define GL_SOURCE0_ALPHA_ARB 0x8588
-#define GL_SOURCE1_ALPHA_ARB 0x8589
-#define GL_SOURCE2_ALPHA_ARB 0x858A
-#define GL_OPERAND0_RGB_ARB 0x8590
-#define GL_OPERAND1_RGB_ARB 0x8591
-#define GL_OPERAND2_RGB_ARB 0x8592
-#define GL_OPERAND0_ALPHA_ARB 0x8598
-#define GL_OPERAND1_ALPHA_ARB 0x8599
-#define GL_OPERAND2_ALPHA_ARB 0x859A
-#endif
-
-/*
- * GL_ARB_texture_env_dot3
- */
-
-#ifndef GL_ARB_texture_env_dot3
-#define GL_ARB_texture_env_dot3 1
-#define GL_DOT3_RGB_ARB 0x86AE
-#define GL_DOT3_RGBA_ARB 0x86AF
-#endif
-
-/*
- * ARB_depth_texture
- */
-#ifndef GL_ARB_depth_texture
-#define GL_ARB_depth_texture 1
-#define GL_DEPTH_COMPONENT16_ARB 0x81A5
-#define GL_DEPTH_COMPONENT24_ARB 0x81A6
-#define GL_DEPTH_COMPONENT32_ARB 0x81A7
-#define GL_TEXTURE_DEPTH_SIZE_ARB 0x884A
-#define GL_DEPTH_TEXTURE_MODE_ARB 0x884B
-#endif
-
-/*
- * ARB_multisample
- */
-#ifndef GL_ARB_multisample
-#define GL_ARB_multisample 1
-#define GL_MULTISAMPLE_ARB 0x809D
-#define GL_SAMPLE_ALPHA_TO_COVERAGE_ARB 0x809E
-#define GL_SAMPLE_ALPHA_TO_ONE_ARB 0x809F
-#define GL_SAMPLE_COVERAGE_ARB 0x80A0
-#define GL_SAMPLE_BUFFERS_ARB 0x80A8
-#define GL_SAMPLES_ARB 0x80A9
-#define GL_SAMPLE_COVERAGE_VALUE_ARB 0x80AA
-#define GL_SAMPLE_COVERAGE_INVERT_ARB 0x80AB
-#define GL_MULTISAMPLE_BIT_ARB 0x20000000
-#define WGL_SAMPLE_BUFFERS_ARB 0x2041
-#define WGL_SAMPLES_ARB 0x2042
-
-#endif
-
-#ifndef GL_SGIS_generate_mipmap
-#define GL_SGIS_generate_mipmap 1
-#define GL_GENERATE_MIPMAP_SGIS 0x8191
-#define GL_GENERATE_MIPMAP_HINT_SGIS 0x8192
-#endif
-
-/* WGL spcific OpenGL extenstions */
-#ifdef WIN32
-
-/*
- * WGL_ARB_extensions_string
- */
-#ifndef WGL_ARB_extensions_string
-#define WGL_ARB_extensions_string 1
-typedef const char * (APIENTRY * wglGetExtensionsStringARBProc) (HDC hDC);
-#endif
-
-/*
- * WGL_ARB_pbuffer
- */
-#ifndef WGL_ARB_pbuffer
-#define WGL_ARB_pbuffer 1
-#define WGL_DRAW_TO_PBUFFER_ARB 0x202D
-#define WGL_MAX_PBUFFER_PIXELS_ARB 0x202E
-#define WGL_MAX_PBUFFER_WIDTH_ARB 0x202F
-#define WGL_MAX_PBUFFER_HEIGHT_ARB 0x2030
-#define WGL_PBUFFER_LARGEST_ARB 0x2033
-#define WGL_PBUFFER_WIDTH_ARB 0x2034
-#define WGL_PBUFFER_HEIGHT_ARB 0x2035
-#define WGL_PBUFFER_LOST_ARB 0x2036
-DECLARE_HANDLE(HPBUFFERARB);
-typedef HPBUFFERARB (APIENTRY * wglCreatePbufferARBProc) (HDC hDC, int iPixelFormat, int iWidth, int iHeight, const int *piAttribList);
-typedef HDC (APIENTRY * wglGetPbufferDCARBProc) (HPBUFFERARB hPbuffer);
-typedef int (APIENTRY * wglReleasePbufferDCARBProc) (HPBUFFERARB hPbuffer, HDC hDC);
-typedef BOOL (APIENTRY * wglDestroyPbufferARBProc) (HPBUFFERARB hPbuffer);
-typedef BOOL (APIENTRY * wglQueryPbufferARBProc) (HPBUFFERARB hPbuffer, int iAttribute, int *piValue);
-#endif
-
-
-/*
- * ARB_pixel_format
- */
-#ifndef WGL_ARB_pixel_format
-#define WGL_ARB_pixel_format 1
-#define WGL_NUMBER_PIXEL_FORMATS_ARB 0x2000
-#define WGL_DRAW_TO_WINDOW_ARB 0x2001
-#define WGL_DRAW_TO_BITMAP_ARB 0x2002
-#define WGL_ACCELERATION_ARB 0x2003
-#define WGL_NEED_PALETTE_ARB 0x2004
-#define WGL_NEED_SYSTEM_PALETTE_ARB 0x2005
-#define WGL_SWAP_LAYER_BUFFERS_ARB 0x2006
-#define WGL_SWAP_METHOD_ARB 0x2007
-#define WGL_NUMBER_OVERLAYS_ARB 0x2008
-#define WGL_NUMBER_UNDERLAYS_ARB 0x2009
-#define WGL_TRANSPARENT_ARB 0x200A
-#define WGL_SHARE_DEPTH_ARB 0x200C
-#define WGL_SHARE_STENCIL_ARB 0x200D
-#define WGL_SHARE_ACCUM_ARB 0x200E
-#define WGL_SUPPORT_GDI_ARB 0x200F
-#define WGL_SUPPORT_OPENGL_ARB 0x2010
-#define WGL_DOUBLE_BUFFER_ARB 0x2011
-#define WGL_STEREO_ARB 0x2012
-#define WGL_PIXEL_TYPE_ARB 0x2013
-#define WGL_COLOR_BITS_ARB 0x2014
-#define WGL_RED_BITS_ARB 0x2015
-#define WGL_RED_SHIFT_ARB 0x2016
-#define WGL_GREEN_BITS_ARB 0x2017
-#define WGL_GREEN_SHIFT_ARB 0x2018
-#define WGL_BLUE_BITS_ARB 0x2019
-#define WGL_BLUE_SHIFT_ARB 0x201A
-#define WGL_ALPHA_BITS_ARB 0x201B
-#define WGL_ALPHA_SHIFT_ARB 0x201C
-#define WGL_ACCUM_BITS_ARB 0x201D
-#define WGL_ACCUM_RED_BITS_ARB 0x201E
-#define WGL_ACCUM_GREEN_BITS_ARB 0x201F
-#define WGL_ACCUM_BLUE_BITS_ARB 0x2020
-#define WGL_ACCUM_ALPHA_BITS_ARB 0x2021
-#define WGL_DEPTH_BITS_ARB 0x2022
-#define WGL_STENCIL_BITS_ARB 0x2023
-#define WGL_AUX_BUFFERS_ARB 0x2024
-#define WGL_NO_ACCELERATION_ARB 0x2025
-#define WGL_GENERIC_ACCELERATION_ARB 0x2026
-#define WGL_FULL_ACCELERATION_ARB 0x2027
-#define WGL_SWAP_EXCHANGE_ARB 0x2028
-#define WGL_SWAP_COPY_ARB 0x2029
-#define WGL_SWAP_UNDEFINED_ARB 0x202A
-#define WGL_TYPE_RGBA_ARB 0x202B
-#define WGL_TYPE_COLORINDEX_ARB 0x202C
-#define WGL_TRANSPARENT_RED_VALUE_ARB 0x2037
-#define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038
-#define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039
-#define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A
-#define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B
-typedef BOOL (APIENTRY * wglGetPixelFormatAttribivARBProc) (HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, int *piValues);
-typedef BOOL (APIENTRY * wglGetPixelFormatAttribfvARBProc) (HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, FLOAT *pfValues);
-typedef BOOL (APIENTRY * wglChoosePixelFormatARBProc) (HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats);
-#endif
-
-/*
- * ARB_render_texture
- */
-#ifndef WGL_ARB_render_texture
-#define WGL_ARB_render_texture 1
-
-#define WGL_BIND_TO_TEXTURE_RGB_ARB 0x2070
-#define WGL_BIND_TO_TEXTURE_RGBA_ARB 0x2071
-#define WGL_TEXTURE_FORMAT_ARB 0x2072
-#define WGL_TEXTURE_TARGET_ARB 0x2073
-#define WGL_MIPMAP_TEXTURE_ARB 0x2074
-#define WGL_TEXTURE_RGB_ARB 0x2075
-#define WGL_TEXTURE_RGBA_ARB 0x2076
-#define WGL_NO_TEXTURE_ARB 0x2077
-#define WGL_TEXTURE_CUBE_MAP_ARB 0x2078
-#define WGL_TEXTURE_1D_ARB 0x2079
-#define WGL_TEXTURE_2D_ARB 0x207A
-#define WGL_NO_TEXTURE_ARB 0x2077
-#define WGL_MIPMAP_LEVEL_ARB 0x207B
-#define WGL_CUBE_MAP_FACE_ARB 0x207C
-#define WGL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB 0x207D
-#define WGL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB 0x207E
-#define WGL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB 0x207F
-#define WGL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB 0x2080
-#define WGL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB 0x2081
-#define WGL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB 0x2082
-#define WGL_FRONT_LEFT_ARB 0x2083
-#define WGL_FRONT_RIGHT_ARB 0x2084
-#define WGL_BACK_LEFT_ARB 0x2085
-#define WGL_BACK_RIGHT_ARB 0x2086
-#define WGL_AUX0_ARB 0x2087
-#define WGL_AUX1_ARB 0x2088
-#define WGL_AUX2_ARB 0x2089
-#define WGL_AUX3_ARB 0x208A
-#define WGL_AUX4_ARB 0x208B
-#define WGL_AUX5_ARB 0x208C
-#define WGL_AUX6_ARB 0x208D
-#define WGL_AUX7_ARB 0x208E
-#define WGL_AUX8_ARB 0x208F
-#define WGL_AUX9_ARB 0x2090
-typedef BOOL (APIENTRY * wglBindTexImageARBProc) (HPBUFFERARB hPbuffer, int iBuffer);
-typedef BOOL (APIENTRY * wglReleaseTexImageARBProc) (HPBUFFERARB hPbuffer, int iBuffer);
-typedef BOOL (APIENTRY * wglSetPbufferAttribARBProc) (HPBUFFERARB hPbuffer, const int *piAttribList);
-#endif
-
-#endif /* WIN32 */
-
-
-/* NVIDIA specific extension */
-
-/*
- * NV_texture_rectangle
- */
-
-#ifndef GL_NV_texture_rectangle
-#define GL_NV_texture_rectangle 1
-#define GL_TEXTURE_RECTANGLE_NV 0x84F5
-#define GL_TEXTURE_BINDING_RECTANGLE_NV 0x84F6
-#define GL_PROXY_TEXTURE_RECTANGLE_NV 0x84F7
-#define GL_MAX_RECTANGLE_TEXTURE_SIZE_NV 0x84F8
-#endif
-
-/*
- * WGL_NV_texture_rectangle
- */
-
-#ifndef WGL_NV_texture_rectangle
-#define WGL_NV_texture_rectangle 1
-#define WGL_BIND_TO_TEXTURE_RECTANGLE_RGB_NV 0x20A0
-#define WGL_BIND_TO_TEXTURE_RECTANGLE_RGBA_NV 0x20A1
-#define WGL_TEXTURE_RECTANGLE_NV 0x20A2
-#endif
-
-/*
- * NV_render_depth_texture
- */
-
-#ifndef WGL_NV_render_depth_texture
-#define WGL_NV_render_depth_texture 1
-#define WGL_NO_TEXTURE_ARB 0x2077
-#define WGL_BIND_TO_TEXTURE_DEPTH_NV 0x20A3
-#define WGL_BIND_TO_TEXTURE_RECTANGLE_DEPTH_NV 0x20A4
-#define WGL_DEPTH_TEXTURE_FORMAT_NV 0x20A5
-#define WGL_TEXTURE_DEPTH_COMPONENT_NV 0x20A6
-#define WGL_DEPTH_COMPONENT_NV 0x20A7
-#endif
-
-/*
- * NV_float_buffer
- */
-#ifndef GL_NV_float_buffer
-#define GL_NV_float_buffer 1
-#define GL_FLOAT_R_NV 0x8880
-#define GL_FLOAT_RG_NV 0x8881
-#define GL_FLOAT_RGB_NV 0x8882
-#define GL_FLOAT_RGBA_NV 0x8883
-#define GL_FLOAT_R16_NV 0x8884
-#define GL_FLOAT_R32_NV 0x8885
-#define GL_FLOAT_RG16_NV 0x8886
-#define GL_FLOAT_RG32_NV 0x8887
-#define GL_FLOAT_RGB16_NV 0x8888
-#define GL_FLOAT_RGB32_NV 0x8889
-#define GL_FLOAT_RGBA16_NV 0x888A
-#define GL_FLOAT_RGBA32_NV 0x888B
-#define GL_TEXTURE_FLOAT_COMPONENTS_NV 0x888C
-#define GL_FLOAT_CLEAR_COLOR_VALUE_NV 0x888D
-#define GL_FLOAT_RGBA_MODE_NV 0x888E
-#endif
-#ifndef GLX_NV_float_buffer
-#define GLX_NV_float_buffer 1
-#define GLX_FLOAT_COMPONENTS_NV 0x20B0
-#define GLX_BIND_TO_TEXTURE_RECTANGLE_FLOAT_R_NV 0x20B1
-#define GLX_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RG_NV 0x20B2
-#define GLX_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGB_NV 0x20B3
-#define GLX_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGBA_NV 0x20B4
-#define GLX_TEXTURE_FLOAT_R_NV 0x20B5
-#define GLX_TEXTURE_FLOAT_RG_NV 0x20B6
-#define GLX_TEXTURE_FLOAT_RGB_NV 0x20B7
-#define GLX_TEXTURE_FLOAT_RGBA_NV 0x20B8
-#endif
-#ifndef WGL_NV_float_buffer
-#define WGL_NV_float_buffer 1
-#define WGL_FLOAT_COMPONENTS_NV 0x20B0
-#define WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_R_NV 0x20B1
-#define WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RG_NV 0x20B2
-#define WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGB_NV 0x20B3
-#define WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGBA_NV 0x20B4
-#define WGL_TEXTURE_FLOAT_R_NV 0x20B5
-#define WGL_TEXTURE_FLOAT_RG_NV 0x20B6
-#define WGL_TEXTURE_FLOAT_RGB_NV 0x20B7
-#define WGL_TEXTURE_FLOAT_RGBA_NV 0x20B8
-#endif
-
-
-/* ATI specific extension */
-
-/*
- * ATI_pixel_format_float
- */
-#ifndef WGL_ATI_pixel_format_float
-#define WGL_ATI_pixel_format_float 1
-#define WGL_TYPE_RGBA_FLOAT_ATI 0x21A0
-#define GL_RGBA_FLOAT_MODE_ATI 0x8820
-#define GL_COLOR_CLEAR_UNCLAMPED_VALUE_ATI 0x8835
-#endif
-
-/*
- * ATI_texture_float
- */
-#ifndef GL_ATI_texture_float
-#define GL_ATI_texture_float 1
-#define GL_RGBA_FLOAT32_ATI 0x8814
-#define GL_RGB_FLOAT32_ATI 0x8815
-#define GL_ALPHA_FLOAT32_ATI 0x8816
-#define GL_INTENSITY_FLOAT32_ATI 0x8817
-#define GL_LUMINANCE_FLOAT32_ATI 0x8818
-#define GL_LUMINANCE_ALPHA_FLOAT32_ATI 0x8819
-#define GL_RGBA_FLOAT16_ATI 0x881A
-#define GL_RGB_FLOAT16_ATI 0x881B
-#define GL_ALPHA_FLOAT16_ATI 0x881C
-#define GL_INTENSITY_FLOAT16_ATI 0x881D
-#define GL_LUMINANCE_FLOAT16_ATI 0x881E
-#define GL_LUMINANCE_ALPHA_FLOAT16_ATI 0x881F
-#endif
-
-
-#if defined(__cplusplus)
-}
-#endif
+bool SGIsOpenGLExtensionSupported(const char *extName);
#endif // !__SG_EXTENSIONS_HXX
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