/* Copyright (c) 2008-2025 the MRtrix3 contributors.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * Covered Software is provided under this License on an "as is"
 * basis, without warranty of any kind, either expressed, implied, or
 * statutory, including, without limitation, warranties that the
 * Covered Software is free of defects, merchantable, fit for a
 * particular purpose or non-infringing.
 * See the Mozilla Public License v. 2.0 for more details.
 *
 * For more details, see http://www.mrtrix.org/.
 */

#ifndef OPENGL_NOLOAD_STYLE_HPP
#define OPENGL_NOLOAD_STYLE_HPP
/*
#if defined(__glew_h__) || defined(__GLEW_H__)
#error Attempt to include auto-generated header after including glew.h
#endif
#if defined(__gl_h_) || defined(__GL_H__)
#error Attempt to include auto-generated header after including gl.h
#endif
#if defined(__glext_h_) || defined(__GLEXT_H_)
#error Attempt to include auto-generated header after including glext.h
#endif
#if defined(__gltypes_h_)
#error Attempt to include auto-generated header after gltypes.h
#endif
#if defined(__gl_ATI_h_)
#error Attempt to include auto-generated header after including glATI.h
#endif
*/
#define __glew_h__
#define __GLEW_H__
#define __gl_h_
#define __GL_H__
#ifndef __glext_h_
# define __glext_h_
#endif
#define __GLEXT_H_
#define __gltypes_h_
#define __gl_ATI_h_

#ifndef APIENTRY
# if defined(__MINGW32__)
#  ifndef WIN32_LEAN_AND_MEAN
#   define WIN32_LEAN_AND_MEAN 1
#  endif
#  ifndef NOMINMAX
#   define NOMINMAX
#  endif
#  include <windows.h>
# elif (_MSC_VER >= 800) || defined(_STDCALL_SUPPORTED) || defined(__BORLANDC__)
#  ifndef WIN32_LEAN_AND_MEAN
#   define WIN32_LEAN_AND_MEAN 1
#  endif
#  ifndef NOMINMAX
#   define NOMINMAX
#  endif
#  include <windows.h>
# else
#  define APIENTRY
# endif
#endif /*APIENTRY*/

#ifndef CODEGEN_FUNCPTR
# define CODEGEN_REMOVE_FUNCPTR
# if defined(_WIN32)
#  define CODEGEN_FUNCPTR APIENTRY
# else
#  define CODEGEN_FUNCPTR
# endif
#endif /*CODEGEN_FUNCPTR*/

#ifndef GLAPI
# define GLAPI extern
#endif


#ifndef GL_LOAD_GEN_BASIC_OPENGL_TYPEDEFS
# define GL_LOAD_GEN_BASIC_OPENGL_TYPEDEFS
#endif /*GL_LOAD_GEN_BASIC_OPENGL_TYPEDEFS*/

#include <cstddef>
#include <cstdint>

using GLenum = unsigned int;
using GLboolean = unsigned char;
using GLbitfield = unsigned int;
using GLvoid = void;
using GLbyte = signed char;
using GLshort = short;
using GLint = int;
using GLubyte = unsigned char;
using GLushort = unsigned short;
using GLuint = unsigned int;
using GLsizei = int;
using GLfloat = float;
using GLclampf = float;
using GLdouble = double;
using GLclampd = double;
using GLchar = char;
using GLcharARB = char;

#ifdef _WIN64
using GLintptr = signed long long int;
#else
using GLintptr = signed long int;
#endif
using GLsizeiptr = GLintptr;

#ifdef __APPLE__
using GLhandleARB = void *;
#else
using GLhandleARB = unsigned int;
#endif

using GLhalfARB = unsigned short;
using GLhalf = unsigned short;
using GLfixed = GLint;
using GLint64 = int64_t;
using GLuint64 = uint64_t;
using GLintptrARB = ptrdiff_t;
using GLsizeiptrARB = ptrdiff_t;
using GLint64EXT = int64_t;
using GLuint64EXT = uint64_t;
using GLsync = struct __GLsync *;

struct _cl_context;
struct _cl_event;
//using GLDEBUGPROC = void (APIENTRY *)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
//using GLDEBUGPROCARB = void (APIENTRY *)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
//using GLDEBUGPROCAMD = void (APIENTRY *)(GLuint id,GLenum category,GLenum severity,GLsizei length,const GLchar *message,void *userParam);
using GLhalfNV = unsigned short;
using GLvdpauSurfaceNV = GLintptr;

namespace gl
{
  enum
  {
    // Version: 1.1
    ALPHA                            = 0x1906,
    ALWAYS                           = 0x0207,
    AND                              = 0x1501,
    AND_INVERTED                     = 0x1504,
    AND_REVERSE                      = 0x1502,
    BACK                             = 0x0405,
    BACK_LEFT                        = 0x0402,
    BACK_RIGHT                       = 0x0403,
    BLEND                            = 0x0BE2,
    BLEND_DST                        = 0x0BE0,
    BLEND_SRC                        = 0x0BE1,
    BLUE                             = 0x1905,
    BYTE                             = 0x1400,
    CCW                              = 0x0901,
    CLEAR                            = 0x1500,
    COLOR                            = 0x1800,
    COLOR_BUFFER_BIT                 = 0x00004000,
    COLOR_CLEAR_VALUE                = 0x0C22,
    COLOR_LOGIC_OP                   = 0x0BF2,
    COLOR_WRITEMASK                  = 0x0C23,
    COPY                             = 0x1503,
    COPY_INVERTED                    = 0x150C,
    CULL_FACE                        = 0x0B44,
    CULL_FACE_MODE                   = 0x0B45,
    CW                               = 0x0900,
    DECR                             = 0x1E03,
    DEPTH                            = 0x1801,
    DEPTH_BUFFER_BIT                 = 0x00000100,
    DEPTH_CLEAR_VALUE                = 0x0B73,
    DEPTH_COMPONENT                  = 0x1902,
    DEPTH_FUNC                       = 0x0B74,
    DEPTH_RANGE                      = 0x0B70,
    DEPTH_TEST                       = 0x0B71,
    DEPTH_WRITEMASK                  = 0x0B72,
    DITHER                           = 0x0BD0,
    DONT_CARE                        = 0x1100,
    DOUBLE                           = 0x140A,
    DOUBLEBUFFER                     = 0x0C32,
    DRAW_BUFFER                      = 0x0C01,
    DST_ALPHA                        = 0x0304,
    DST_COLOR                        = 0x0306,
    EQUAL                            = 0x0202,
    EQUIV                            = 0x1509,
    EXTENSIONS                       = 0x1F03,
    FALSE_                           = 0,
    FASTEST                          = 0x1101,
    FILL                             = 0x1B02,
    FLOAT                            = 0x1406,
    FRONT                            = 0x0404,
    FRONT_AND_BACK                   = 0x0408,
    FRONT_FACE                       = 0x0B46,
    FRONT_LEFT                       = 0x0400,
    FRONT_RIGHT                      = 0x0401,
    GEQUAL                           = 0x0206,
    GREATER                          = 0x0204,
    GREEN                            = 0x1904,
    INCR                             = 0x1E02,
    INT                              = 0x1404,
    INVALID_ENUM                     = 0x0500,
    INVALID_OPERATION                = 0x0502,
    INVALID_VALUE                    = 0x0501,
    INVERT                           = 0x150A,
    KEEP                             = 0x1E00,
    LEFT                             = 0x0406,
    LEQUAL                           = 0x0203,
    LESS                             = 0x0201,
    LINE                             = 0x1B01,
    LINEAR                           = 0x2601,
    LINEAR_MIPMAP_LINEAR             = 0x2703,
    LINEAR_MIPMAP_NEAREST            = 0x2701,
    LINES                            = 0x0001,
    LINE_LOOP                        = 0x0002,
    LINE_SMOOTH                      = 0x0B20,
    LINE_SMOOTH_HINT                 = 0x0C52,
    LINE_STRIP                       = 0x0003,
    LINE_WIDTH                       = 0x0B21,
    LINE_WIDTH_GRANULARITY           = 0x0B23,
    LINE_WIDTH_RANGE                 = 0x0B22,
    LOGIC_OP_MODE                    = 0x0BF0,
    MAX_TEXTURE_SIZE                 = 0x0D33,
    MAX_VIEWPORT_DIMS                = 0x0D3A,
    NAND                             = 0x150E,
    NEAREST                          = 0x2600,
    NEAREST_MIPMAP_LINEAR            = 0x2702,
    NEAREST_MIPMAP_NEAREST           = 0x2700,
    NEVER                            = 0x0200,
    NICEST                           = 0x1102,
    NONE                             = 0,
    NOOP                             = 0x1505,
    NOR                              = 0x1508,
    NOTEQUAL                         = 0x0205,
    NO_ERROR_                        = 0,
    ONE                              = 1,
    ONE_MINUS_DST_ALPHA              = 0x0305,
    ONE_MINUS_DST_COLOR              = 0x0307,
    ONE_MINUS_SRC_ALPHA              = 0x0303,
    ONE_MINUS_SRC_COLOR              = 0x0301,
    OR                               = 0x1507,
    OR_INVERTED                      = 0x150D,
    OR_REVERSE                       = 0x150B,
    OUT_OF_MEMORY                    = 0x0505,
    PACK_ALIGNMENT                   = 0x0D05,
    PACK_LSB_FIRST                   = 0x0D01,
    PACK_ROW_LENGTH                  = 0x0D02,
    PACK_SKIP_PIXELS                 = 0x0D04,
    PACK_SKIP_ROWS                   = 0x0D03,
    PACK_SWAP_BYTES                  = 0x0D00,
    POINT                            = 0x1B00,
    POINTS                           = 0x0000,
    POINT_SIZE                       = 0x0B11,
    POINT_SIZE_GRANULARITY           = 0x0B13,
    POINT_SIZE_RANGE                 = 0x0B12,
    POLYGON_MODE                     = 0x0B40,
    POLYGON_OFFSET_FACTOR            = 0x8038,
    POLYGON_OFFSET_FILL              = 0x8037,
    POLYGON_OFFSET_LINE              = 0x2A02,
    POLYGON_OFFSET_POINT             = 0x2A01,
    POLYGON_OFFSET_UNITS             = 0x2A00,
    POLYGON_SMOOTH                   = 0x0B41,
    POLYGON_SMOOTH_HINT              = 0x0C53,
    PROXY_TEXTURE_1D                 = 0x8063,
    PROXY_TEXTURE_2D                 = 0x8064,
    QUADS                            = 0x0007,
    R3_G3_B2                         = 0x2A10,
    READ_BUFFER                      = 0x0C02,
    RED                              = 0x1903,
    RENDERER                         = 0x1F01,
    REPEAT                           = 0x2901,
    REPLACE                          = 0x1E01,
    RGB                              = 0x1907,
    RGB10                            = 0x8052,
    RGB10_A2                         = 0x8059,
    RGB12                            = 0x8053,
    RGB16                            = 0x8054,
    RGB4                             = 0x804F,
    RGB5                             = 0x8050,
    RGB5_A1                          = 0x8057,
    RGB8                             = 0x8051,
    RGBA                             = 0x1908,
    RGBA12                           = 0x805A,
    RGBA16                           = 0x805B,
    RGBA2                            = 0x8055,
    RGBA4                            = 0x8056,
    RGBA8                            = 0x8058,
    RIGHT                            = 0x0407,
    SCISSOR_BOX                      = 0x0C10,
    SCISSOR_TEST                     = 0x0C11,
    SET                              = 0x150F,
    SHORT                            = 0x1402,
    SRC_ALPHA                        = 0x0302,
    SRC_ALPHA_SATURATE               = 0x0308,
    SRC_COLOR                        = 0x0300,
    STENCIL                          = 0x1802,
    STENCIL_BUFFER_BIT               = 0x00000400,
    STENCIL_CLEAR_VALUE              = 0x0B91,
    STENCIL_FAIL                     = 0x0B94,
    STENCIL_FUNC                     = 0x0B92,
    STENCIL_INDEX                    = 0x1901,
    STENCIL_PASS_DEPTH_FAIL          = 0x0B95,
    STENCIL_PASS_DEPTH_PASS          = 0x0B96,
    STENCIL_REF                      = 0x0B97,
    STENCIL_TEST                     = 0x0B90,
    STENCIL_VALUE_MASK               = 0x0B93,
    STENCIL_WRITEMASK                = 0x0B98,
    STEREO                           = 0x0C33,
    SUBPIXEL_BITS                    = 0x0D50,
    TEXTURE                          = 0x1702,
    TEXTURE_1D                       = 0x0DE0,
    TEXTURE_2D                       = 0x0DE1,
    TEXTURE_ALPHA_SIZE               = 0x805F,
    TEXTURE_BINDING_1D               = 0x8068,
    TEXTURE_BINDING_2D               = 0x8069,
    TEXTURE_BLUE_SIZE                = 0x805E,
    TEXTURE_BORDER_COLOR             = 0x1004,
    TEXTURE_GREEN_SIZE               = 0x805D,
    TEXTURE_HEIGHT                   = 0x1001,
    TEXTURE_INTERNAL_FORMAT          = 0x1003,
    TEXTURE_MAG_FILTER               = 0x2800,
    TEXTURE_MIN_FILTER               = 0x2801,
    TEXTURE_RED_SIZE                 = 0x805C,
    TEXTURE_WIDTH                    = 0x1000,
    TEXTURE_WRAP_S                   = 0x2802,
    TEXTURE_WRAP_T                   = 0x2803,
    TRIANGLES                        = 0x0004,
    TRIANGLE_FAN                     = 0x0006,
    TRIANGLE_STRIP                   = 0x0005,
    TRUE_                            = 1,
    UNPACK_ALIGNMENT                 = 0x0CF5,
    UNPACK_LSB_FIRST                 = 0x0CF1,
    UNPACK_ROW_LENGTH                = 0x0CF2,
    UNPACK_SKIP_PIXELS               = 0x0CF4,
    UNPACK_SKIP_ROWS                 = 0x0CF3,
    UNPACK_SWAP_BYTES                = 0x0CF0,
    UNSIGNED_BYTE                    = 0x1401,
    UNSIGNED_INT                     = 0x1405,
    UNSIGNED_SHORT                   = 0x1403,
    VENDOR                           = 0x1F00,
    VERSION                          = 0x1F02,
    VIEWPORT                         = 0x0BA2,
    XOR                              = 0x1506,
    ZERO                             = 0,

    // Version: 1.2
    ALIASED_LINE_WIDTH_RANGE         = 0x846E,
    BGR                              = 0x80E0,
    BGRA                             = 0x80E1,
    CLAMP_TO_EDGE                    = 0x812F,
    MAX_3D_TEXTURE_SIZE              = 0x8073,
    MAX_ELEMENTS_INDICES             = 0x80E9,
    MAX_ELEMENTS_VERTICES            = 0x80E8,
    PACK_IMAGE_HEIGHT                = 0x806C,
    PACK_SKIP_IMAGES                 = 0x806B,
    PROXY_TEXTURE_3D                 = 0x8070,
    SMOOTH_LINE_WIDTH_GRANULARITY    = 0x0B23,
    SMOOTH_LINE_WIDTH_RANGE          = 0x0B22,
    SMOOTH_POINT_SIZE_GRANULARITY    = 0x0B13,
    SMOOTH_POINT_SIZE_RANGE          = 0x0B12,
    TEXTURE_3D                       = 0x806F,
    TEXTURE_BASE_LEVEL               = 0x813C,
    TEXTURE_BINDING_3D               = 0x806A,
    TEXTURE_DEPTH                    = 0x8071,
    TEXTURE_MAX_LEVEL                = 0x813D,
    TEXTURE_MAX_LOD                  = 0x813B,
    TEXTURE_MIN_LOD                  = 0x813A,
    TEXTURE_WRAP_R                   = 0x8072,
    UNPACK_IMAGE_HEIGHT              = 0x806E,
    UNPACK_SKIP_IMAGES               = 0x806D,
    UNSIGNED_BYTE_2_3_3_REV          = 0x8362,
    UNSIGNED_BYTE_3_3_2              = 0x8032,
    UNSIGNED_INT_10_10_10_2          = 0x8036,
    UNSIGNED_INT_2_10_10_10_REV      = 0x8368,
    UNSIGNED_INT_8_8_8_8             = 0x8035,
    UNSIGNED_INT_8_8_8_8_REV         = 0x8367,
    UNSIGNED_SHORT_1_5_5_5_REV       = 0x8366,
    UNSIGNED_SHORT_4_4_4_4           = 0x8033,
    UNSIGNED_SHORT_4_4_4_4_REV       = 0x8365,
    UNSIGNED_SHORT_5_5_5_1           = 0x8034,
    UNSIGNED_SHORT_5_6_5             = 0x8363,
    UNSIGNED_SHORT_5_6_5_REV         = 0x8364,

    // Version: 1.3
    ACTIVE_TEXTURE                   = 0x84E0,
    CLAMP_TO_BORDER                  = 0x812D,
    COMPRESSED_RGB                   = 0x84ED,
    COMPRESSED_RGBA                  = 0x84EE,
    COMPRESSED_TEXTURE_FORMATS       = 0x86A3,
    MAX_CUBE_MAP_TEXTURE_SIZE        = 0x851C,
    MULTISAMPLE                      = 0x809D,
    NUM_COMPRESSED_TEXTURE_FORMATS   = 0x86A2,
    PROXY_TEXTURE_CUBE_MAP           = 0x851B,
    SAMPLES                          = 0x80A9,
    SAMPLE_ALPHA_TO_COVERAGE         = 0x809E,
    SAMPLE_ALPHA_TO_ONE              = 0x809F,
    SAMPLE_BUFFERS                   = 0x80A8,
    SAMPLE_COVERAGE                  = 0x80A0,
    SAMPLE_COVERAGE_INVERT           = 0x80AB,
    SAMPLE_COVERAGE_VALUE            = 0x80AA,
    TEXTURE0                         = 0x84C0,
    TEXTURE1                         = 0x84C1,
    TEXTURE10                        = 0x84CA,
    TEXTURE11                        = 0x84CB,
    TEXTURE12                        = 0x84CC,
    TEXTURE13                        = 0x84CD,
    TEXTURE14                        = 0x84CE,
    TEXTURE15                        = 0x84CF,
    TEXTURE16                        = 0x84D0,
    TEXTURE17                        = 0x84D1,
    TEXTURE18                        = 0x84D2,
    TEXTURE19                        = 0x84D3,
    TEXTURE2                         = 0x84C2,
    TEXTURE20                        = 0x84D4,
    TEXTURE21                        = 0x84D5,
    TEXTURE22                        = 0x84D6,
    TEXTURE23                        = 0x84D7,
    TEXTURE24                        = 0x84D8,
    TEXTURE25                        = 0x84D9,
    TEXTURE26                        = 0x84DA,
    TEXTURE27                        = 0x84DB,
    TEXTURE28                        = 0x84DC,
    TEXTURE29                        = 0x84DD,
    TEXTURE3                         = 0x84C3,
    TEXTURE30                        = 0x84DE,
    TEXTURE31                        = 0x84DF,
    TEXTURE4                         = 0x84C4,
    TEXTURE5                         = 0x84C5,
    TEXTURE6                         = 0x84C6,
    TEXTURE7                         = 0x84C7,
    TEXTURE8                         = 0x84C8,
    TEXTURE9                         = 0x84C9,
    TEXTURE_BINDING_CUBE_MAP         = 0x8514,
    TEXTURE_COMPRESSED               = 0x86A1,
    TEXTURE_COMPRESSED_IMAGE_SIZE    = 0x86A0,
    TEXTURE_COMPRESSION_HINT         = 0x84EF,
    TEXTURE_CUBE_MAP                 = 0x8513,
    TEXTURE_CUBE_MAP_NEGATIVE_X      = 0x8516,
    TEXTURE_CUBE_MAP_NEGATIVE_Y      = 0x8518,
    TEXTURE_CUBE_MAP_NEGATIVE_Z      = 0x851A,
    TEXTURE_CUBE_MAP_POSITIVE_X      = 0x8515,
    TEXTURE_CUBE_MAP_POSITIVE_Y      = 0x8517,
    TEXTURE_CUBE_MAP_POSITIVE_Z      = 0x8519,

    // Version: 1.4
    BLEND_COLOR                      = 0x8005,
    BLEND_DST_ALPHA                  = 0x80CA,
    BLEND_DST_RGB                    = 0x80C8,
    BLEND_EQUATION                   = 0x8009,
    BLEND_SRC_ALPHA                  = 0x80CB,
    BLEND_SRC_RGB                    = 0x80C9,
    CONSTANT_ALPHA                   = 0x8003,
    CONSTANT_COLOR                   = 0x8001,
    DECR_WRAP                        = 0x8508,
    DEPTH_COMPONENT16                = 0x81A5,
    DEPTH_COMPONENT24                = 0x81A6,
    DEPTH_COMPONENT32                = 0x81A7,
    FUNC_ADD                         = 0x8006,
    FUNC_REVERSE_SUBTRACT            = 0x800B,
    FUNC_SUBTRACT                    = 0x800A,
    INCR_WRAP                        = 0x8507,
    MAX                              = 0x8008,
    MAX_TEXTURE_LOD_BIAS             = 0x84FD,
    MIN                              = 0x8007,
    MIRRORED_REPEAT                  = 0x8370,
    ONE_MINUS_CONSTANT_ALPHA         = 0x8004,
    ONE_MINUS_CONSTANT_COLOR         = 0x8002,
    POINT_FADE_THRESHOLD_SIZE        = 0x8128,
    TEXTURE_COMPARE_FUNC             = 0x884D,
    TEXTURE_COMPARE_MODE             = 0x884C,
    TEXTURE_DEPTH_SIZE               = 0x884A,
    TEXTURE_LOD_BIAS                 = 0x8501,

    // Version: 1.5
    ARRAY_BUFFER                     = 0x8892,
    ARRAY_BUFFER_BINDING             = 0x8894,
    BUFFER_ACCESS                    = 0x88BB,
    BUFFER_MAPPED                    = 0x88BC,
    BUFFER_MAP_POINTER               = 0x88BD,
    BUFFER_SIZE                      = 0x8764,
    BUFFER_USAGE                     = 0x8765,
    CURRENT_QUERY                    = 0x8865,
    DYNAMIC_COPY                     = 0x88EA,
    DYNAMIC_DRAW                     = 0x88E8,
    DYNAMIC_READ                     = 0x88E9,
    ELEMENT_ARRAY_BUFFER             = 0x8893,
    ELEMENT_ARRAY_BUFFER_BINDING     = 0x8895,
    QUERY_COUNTER_BITS               = 0x8864,
    QUERY_RESULT                     = 0x8866,
    QUERY_RESULT_AVAILABLE           = 0x8867,
    READ_ONLY                        = 0x88B8,
    READ_WRITE                       = 0x88BA,
    SAMPLES_PASSED                   = 0x8914,
    SRC1_ALPHA                       = 0x8589,
    STATIC_COPY                      = 0x88E6,
    STATIC_DRAW                      = 0x88E4,
    STATIC_READ                      = 0x88E5,
    STREAM_COPY                      = 0x88E2,
    STREAM_DRAW                      = 0x88E0,
    STREAM_READ                      = 0x88E1,
    VERTEX_ATTRIB_ARRAY_BUFFER_BINDING = 0x889F,
    WRITE_ONLY                       = 0x88B9,

    // Version: 2.0
    ACTIVE_ATTRIBUTES                = 0x8B89,
    ACTIVE_ATTRIBUTE_MAX_LENGTH      = 0x8B8A,
    ACTIVE_UNIFORMS                  = 0x8B86,
    ACTIVE_UNIFORM_MAX_LENGTH        = 0x8B87,
    ATTACHED_SHADERS                 = 0x8B85,
    BLEND_EQUATION_ALPHA             = 0x883D,
    BLEND_EQUATION_RGB               = 0x8009,
    BOOL                             = 0x8B56,
    BOOL_VEC2                        = 0x8B57,
    BOOL_VEC3                        = 0x8B58,
    BOOL_VEC4                        = 0x8B59,
    COMPILE_STATUS                   = 0x8B81,
    CURRENT_PROGRAM                  = 0x8B8D,
    CURRENT_VERTEX_ATTRIB            = 0x8626,
    DELETE_STATUS                    = 0x8B80,
    DRAW_BUFFER0                     = 0x8825,
    DRAW_BUFFER1                     = 0x8826,
    DRAW_BUFFER10                    = 0x882F,
    DRAW_BUFFER11                    = 0x8830,
    DRAW_BUFFER12                    = 0x8831,
    DRAW_BUFFER13                    = 0x8832,
    DRAW_BUFFER14                    = 0x8833,
    DRAW_BUFFER15                    = 0x8834,
    DRAW_BUFFER2                     = 0x8827,
    DRAW_BUFFER3                     = 0x8828,
    DRAW_BUFFER4                     = 0x8829,
    DRAW_BUFFER5                     = 0x882A,
    DRAW_BUFFER6                     = 0x882B,
    DRAW_BUFFER7                     = 0x882C,
    DRAW_BUFFER8                     = 0x882D,
    DRAW_BUFFER9                     = 0x882E,
    FLOAT_MAT2                       = 0x8B5A,
    FLOAT_MAT3                       = 0x8B5B,
    FLOAT_MAT4                       = 0x8B5C,
    FLOAT_VEC2                       = 0x8B50,
    FLOAT_VEC3                       = 0x8B51,
    FLOAT_VEC4                       = 0x8B52,
    FRAGMENT_SHADER                  = 0x8B30,
    FRAGMENT_SHADER_DERIVATIVE_HINT  = 0x8B8B,
    INFO_LOG_LENGTH                  = 0x8B84,
    INT_VEC2                         = 0x8B53,
    INT_VEC3                         = 0x8B54,
    INT_VEC4                         = 0x8B55,
    LINK_STATUS                      = 0x8B82,
    LOWER_LEFT                       = 0x8CA1,
    MAX_COMBINED_TEXTURE_IMAGE_UNITS = 0x8B4D,
    MAX_DRAW_BUFFERS                 = 0x8824,
    MAX_FRAGMENT_UNIFORM_COMPONENTS  = 0x8B49,
    MAX_TEXTURE_IMAGE_UNITS          = 0x8872,
    MAX_VARYING_FLOATS               = 0x8B4B,
    MAX_VERTEX_ATTRIBS               = 0x8869,
    MAX_VERTEX_TEXTURE_IMAGE_UNITS   = 0x8B4C,
    MAX_VERTEX_UNIFORM_COMPONENTS    = 0x8B4A,
    POINT_SPRITE_COORD_ORIGIN        = 0x8CA0,
    SAMPLER_1D                       = 0x8B5D,
    SAMPLER_1D_SHADOW                = 0x8B61,
    SAMPLER_2D                       = 0x8B5E,
    SAMPLER_2D_SHADOW                = 0x8B62,
    SAMPLER_3D                       = 0x8B5F,
    SAMPLER_CUBE                     = 0x8B60,
    SHADER_SOURCE_LENGTH             = 0x8B88,
    SHADER_TYPE                      = 0x8B4F,
    SHADING_LANGUAGE_VERSION         = 0x8B8C,
    STENCIL_BACK_FAIL                = 0x8801,
    STENCIL_BACK_FUNC                = 0x8800,
    STENCIL_BACK_PASS_DEPTH_FAIL     = 0x8802,
    STENCIL_BACK_PASS_DEPTH_PASS     = 0x8803,
    STENCIL_BACK_REF                 = 0x8CA3,
    STENCIL_BACK_VALUE_MASK          = 0x8CA4,
    STENCIL_BACK_WRITEMASK           = 0x8CA5,
    UPPER_LEFT                       = 0x8CA2,
    VALIDATE_STATUS                  = 0x8B83,
    VERTEX_ATTRIB_ARRAY_ENABLED      = 0x8622,
    VERTEX_ATTRIB_ARRAY_NORMALIZED   = 0x886A,
    VERTEX_ATTRIB_ARRAY_POINTER      = 0x8645,
    VERTEX_ATTRIB_ARRAY_SIZE         = 0x8623,
    VERTEX_ATTRIB_ARRAY_STRIDE       = 0x8624,
    VERTEX_ATTRIB_ARRAY_TYPE         = 0x8625,
    VERTEX_PROGRAM_POINT_SIZE        = 0x8642,
    VERTEX_SHADER                    = 0x8B31,

    // Version: 2.1
    COMPRESSED_SRGB                  = 0x8C48,
    COMPRESSED_SRGB_ALPHA            = 0x8C49,
    FLOAT_MAT2x3                     = 0x8B65,
    FLOAT_MAT2x4                     = 0x8B66,
    FLOAT_MAT3x2                     = 0x8B67,
    FLOAT_MAT3x4                     = 0x8B68,
    FLOAT_MAT4x2                     = 0x8B69,
    FLOAT_MAT4x3                     = 0x8B6A,
    PIXEL_PACK_BUFFER                = 0x88EB,
    PIXEL_PACK_BUFFER_BINDING        = 0x88ED,
    PIXEL_UNPACK_BUFFER              = 0x88EC,
    PIXEL_UNPACK_BUFFER_BINDING      = 0x88EF,
    SRGB                             = 0x8C40,
    SRGB8                            = 0x8C41,
    SRGB8_ALPHA8                     = 0x8C43,
    SRGB_ALPHA                       = 0x8C42,

    // Version: 3.0
    BGRA_INTEGER                     = 0x8D9B,
    BGR_INTEGER                      = 0x8D9A,
    BLUE_INTEGER                     = 0x8D96,
    BUFFER_ACCESS_FLAGS              = 0x911F,
    BUFFER_MAP_LENGTH                = 0x9120,
    BUFFER_MAP_OFFSET                = 0x9121,
    CLAMP_READ_COLOR                 = 0x891C,
    CLIP_DISTANCE0                   = 0x3000,
    CLIP_DISTANCE1                   = 0x3001,
    CLIP_DISTANCE2                   = 0x3002,
    CLIP_DISTANCE3                   = 0x3003,
    CLIP_DISTANCE4                   = 0x3004,
    CLIP_DISTANCE5                   = 0x3005,
    CLIP_DISTANCE6                   = 0x3006,
    CLIP_DISTANCE7                   = 0x3007,
    COLOR_ATTACHMENT0                = 0x8CE0,
    COLOR_ATTACHMENT1                = 0x8CE1,
    COLOR_ATTACHMENT10               = 0x8CEA,
    COLOR_ATTACHMENT11               = 0x8CEB,
    COLOR_ATTACHMENT12               = 0x8CEC,
    COLOR_ATTACHMENT13               = 0x8CED,
    COLOR_ATTACHMENT14               = 0x8CEE,
    COLOR_ATTACHMENT15               = 0x8CEF,
    COLOR_ATTACHMENT2                = 0x8CE2,
    COLOR_ATTACHMENT3                = 0x8CE3,
    COLOR_ATTACHMENT4                = 0x8CE4,
    COLOR_ATTACHMENT5                = 0x8CE5,
    COLOR_ATTACHMENT6                = 0x8CE6,
    COLOR_ATTACHMENT7                = 0x8CE7,
    COLOR_ATTACHMENT8                = 0x8CE8,
    COLOR_ATTACHMENT9                = 0x8CE9,
    COMPARE_REF_TO_TEXTURE           = 0x884E,
    COMPRESSED_RED                   = 0x8225,
    COMPRESSED_RED_RGTC1             = 0x8DBB,
    COMPRESSED_RG                    = 0x8226,
    COMPRESSED_RG_RGTC2              = 0x8DBD,
    COMPRESSED_SIGNED_RED_RGTC1      = 0x8DBC,
    COMPRESSED_SIGNED_RG_RGTC2       = 0x8DBE,
    CONTEXT_FLAGS                    = 0x821E,
    CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT = 0x00000001,
    DEPTH24_STENCIL8                 = 0x88F0,
    DEPTH32F_STENCIL8                = 0x8CAD,
    DEPTH_ATTACHMENT                 = 0x8D00,
    DEPTH_COMPONENT32F               = 0x8CAC,
    DEPTH_STENCIL                    = 0x84F9,
    DEPTH_STENCIL_ATTACHMENT         = 0x821A,
    DRAW_FRAMEBUFFER                 = 0x8CA9,
    DRAW_FRAMEBUFFER_BINDING         = 0x8CA6,
    FIXED_ONLY                       = 0x891D,
    FLOAT_32_UNSIGNED_INT_24_8_REV   = 0x8DAD,
    FRAMEBUFFER                      = 0x8D40,
    FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE = 0x8215,
    FRAMEBUFFER_ATTACHMENT_BLUE_SIZE = 0x8214,
    FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING = 0x8210,
    FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE = 0x8211,
    FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE = 0x8216,
    FRAMEBUFFER_ATTACHMENT_GREEN_SIZE = 0x8213,
    FRAMEBUFFER_ATTACHMENT_OBJECT_NAME = 0x8CD1,
    FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE = 0x8CD0,
    FRAMEBUFFER_ATTACHMENT_RED_SIZE  = 0x8212,
    FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE = 0x8217,
    FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE = 0x8CD3,
    FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER = 0x8CD4,
    FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL = 0x8CD2,
    FRAMEBUFFER_BINDING              = 0x8CA6,
    FRAMEBUFFER_COMPLETE             = 0x8CD5,
    FRAMEBUFFER_DEFAULT              = 0x8218,
    FRAMEBUFFER_INCOMPLETE_ATTACHMENT = 0x8CD6,
    FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER = 0x8CDB,
    FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = 0x8CD7,
    FRAMEBUFFER_INCOMPLETE_MULTISAMPLE = 0x8D56,
    FRAMEBUFFER_INCOMPLETE_READ_BUFFER = 0x8CDC,
    FRAMEBUFFER_SRGB                 = 0x8DB9,
    FRAMEBUFFER_UNDEFINED            = 0x8219,
    FRAMEBUFFER_UNSUPPORTED          = 0x8CDD,
    GREEN_INTEGER                    = 0x8D95,
    HALF_FLOAT                       = 0x140B,
    INTERLEAVED_ATTRIBS              = 0x8C8C,
    INT_SAMPLER_1D                   = 0x8DC9,
    INT_SAMPLER_1D_ARRAY             = 0x8DCE,
    INT_SAMPLER_2D                   = 0x8DCA,
    INT_SAMPLER_2D_ARRAY             = 0x8DCF,
    INT_SAMPLER_3D                   = 0x8DCB,
    INT_SAMPLER_CUBE                 = 0x8DCC,
    INVALID_FRAMEBUFFER_OPERATION    = 0x0506,
    MAJOR_VERSION                    = 0x821B,
    MAP_FLUSH_EXPLICIT_BIT           = 0x0010,
    MAP_INVALIDATE_BUFFER_BIT        = 0x0008,
    MAP_INVALIDATE_RANGE_BIT         = 0x0004,
    MAP_READ_BIT                     = 0x0001,
    MAP_UNSYNCHRONIZED_BIT           = 0x0020,
    MAP_WRITE_BIT                    = 0x0002,
    MAX_ARRAY_TEXTURE_LAYERS         = 0x88FF,
    MAX_CLIP_DISTANCES               = 0x0D32,
    MAX_COLOR_ATTACHMENTS            = 0x8CDF,
    MAX_PROGRAM_TEXEL_OFFSET         = 0x8905,
    MAX_RENDERBUFFER_SIZE            = 0x84E8,
    MAX_SAMPLES                      = 0x8D57,
    MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS = 0x8C8A,
    MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS = 0x8C8B,
    MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS = 0x8C80,
    MAX_VARYING_COMPONENTS           = 0x8B4B,
    MINOR_VERSION                    = 0x821C,
    MIN_PROGRAM_TEXEL_OFFSET         = 0x8904,
    NUM_EXTENSIONS                   = 0x821D,
    PRIMITIVES_GENERATED             = 0x8C87,
    PROXY_TEXTURE_1D_ARRAY           = 0x8C19,
    PROXY_TEXTURE_2D_ARRAY           = 0x8C1B,
    QUERY_BY_REGION_NO_WAIT          = 0x8E16,
    QUERY_BY_REGION_WAIT             = 0x8E15,
    QUERY_NO_WAIT                    = 0x8E14,
    QUERY_WAIT                       = 0x8E13,
    R11F_G11F_B10F                   = 0x8C3A,
    R16                              = 0x822A,
    R16F                             = 0x822D,
    R16I                             = 0x8233,
    R16UI                            = 0x8234,
    R32F                             = 0x822E,
    R32I                             = 0x8235,
    R32UI                            = 0x8236,
    R8                               = 0x8229,
    R8I                              = 0x8231,
    R8UI                             = 0x8232,
    RASTERIZER_DISCARD               = 0x8C89,
    READ_FRAMEBUFFER                 = 0x8CA8,
    READ_FRAMEBUFFER_BINDING         = 0x8CAA,
    RED_INTEGER                      = 0x8D94,
    RENDERBUFFER                     = 0x8D41,
    RENDERBUFFER_ALPHA_SIZE          = 0x8D53,
    RENDERBUFFER_BINDING             = 0x8CA7,
    RENDERBUFFER_BLUE_SIZE           = 0x8D52,
    RENDERBUFFER_DEPTH_SIZE          = 0x8D54,
    RENDERBUFFER_GREEN_SIZE          = 0x8D51,
    RENDERBUFFER_HEIGHT              = 0x8D43,
    RENDERBUFFER_INTERNAL_FORMAT     = 0x8D44,
    RENDERBUFFER_RED_SIZE            = 0x8D50,
    RENDERBUFFER_SAMPLES             = 0x8CAB,
    RENDERBUFFER_STENCIL_SIZE        = 0x8D55,
    RENDERBUFFER_WIDTH               = 0x8D42,
    RG                               = 0x8227,
    RG16                             = 0x822C,
    RG16F                            = 0x822F,
    RG16I                            = 0x8239,
    RG16UI                           = 0x823A,
    RG32F                            = 0x8230,
    RG32I                            = 0x823B,
    RG32UI                           = 0x823C,
    RG8                              = 0x822B,
    RG8I                             = 0x8237,
    RG8UI                            = 0x8238,
    RGB16F                           = 0x881B,
    RGB16I                           = 0x8D89,
    RGB16UI                          = 0x8D77,
    RGB32F                           = 0x8815,
    RGB32I                           = 0x8D83,
    RGB32UI                          = 0x8D71,
    RGB8I                            = 0x8D8F,
    RGB8UI                           = 0x8D7D,
    RGB9_E5                          = 0x8C3D,
    RGBA16F                          = 0x881A,
    RGBA16I                          = 0x8D88,
    RGBA16UI                         = 0x8D76,
    RGBA32F                          = 0x8814,
    RGBA32I                          = 0x8D82,
    RGBA32UI                         = 0x8D70,
    RGBA8I                           = 0x8D8E,
    RGBA8UI                          = 0x8D7C,
    RGBA_INTEGER                     = 0x8D99,
    RGB_INTEGER                      = 0x8D98,
    RG_INTEGER                       = 0x8228,
    SAMPLER_1D_ARRAY                 = 0x8DC0,
    SAMPLER_1D_ARRAY_SHADOW          = 0x8DC3,
    SAMPLER_2D_ARRAY                 = 0x8DC1,
    SAMPLER_2D_ARRAY_SHADOW          = 0x8DC4,
    SAMPLER_CUBE_SHADOW              = 0x8DC5,
    SEPARATE_ATTRIBS                 = 0x8C8D,
    STENCIL_ATTACHMENT               = 0x8D20,
    STENCIL_INDEX1                   = 0x8D46,
    STENCIL_INDEX16                  = 0x8D49,
    STENCIL_INDEX4                   = 0x8D47,
    STENCIL_INDEX8                   = 0x8D48,
    TEXTURE_1D_ARRAY                 = 0x8C18,
    TEXTURE_2D_ARRAY                 = 0x8C1A,
    TEXTURE_ALPHA_TYPE               = 0x8C13,
    TEXTURE_BINDING_1D_ARRAY         = 0x8C1C,
    TEXTURE_BINDING_2D_ARRAY         = 0x8C1D,
    TEXTURE_BLUE_TYPE                = 0x8C12,
    TEXTURE_DEPTH_TYPE               = 0x8C16,
    TEXTURE_GREEN_TYPE               = 0x8C11,
    TEXTURE_RED_TYPE                 = 0x8C10,
    TEXTURE_SHARED_SIZE              = 0x8C3F,
    TEXTURE_STENCIL_SIZE             = 0x88F1,
    TRANSFORM_FEEDBACK_BUFFER        = 0x8C8E,
    TRANSFORM_FEEDBACK_BUFFER_BINDING = 0x8C8F,
    TRANSFORM_FEEDBACK_BUFFER_MODE   = 0x8C7F,
    TRANSFORM_FEEDBACK_BUFFER_SIZE   = 0x8C85,
    TRANSFORM_FEEDBACK_BUFFER_START  = 0x8C84,
    TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN = 0x8C88,
    TRANSFORM_FEEDBACK_VARYINGS      = 0x8C83,
    TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH = 0x8C76,
    UNSIGNED_INT_10F_11F_11F_REV     = 0x8C3B,
    UNSIGNED_INT_24_8                = 0x84FA,
    UNSIGNED_INT_5_9_9_9_REV         = 0x8C3E,
    UNSIGNED_INT_SAMPLER_1D          = 0x8DD1,
    UNSIGNED_INT_SAMPLER_1D_ARRAY    = 0x8DD6,
    UNSIGNED_INT_SAMPLER_2D          = 0x8DD2,
    UNSIGNED_INT_SAMPLER_2D_ARRAY    = 0x8DD7,
    UNSIGNED_INT_SAMPLER_3D          = 0x8DD3,
    UNSIGNED_INT_SAMPLER_CUBE        = 0x8DD4,
    UNSIGNED_INT_VEC2                = 0x8DC6,
    UNSIGNED_INT_VEC3                = 0x8DC7,
    UNSIGNED_INT_VEC4                = 0x8DC8,
    UNSIGNED_NORMALIZED              = 0x8C17,
    VERTEX_ARRAY_BINDING             = 0x85B5,
    VERTEX_ATTRIB_ARRAY_INTEGER      = 0x88FD,

    // Version: 3.1
    ACTIVE_UNIFORM_BLOCKS            = 0x8A36,
    ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH = 0x8A35,
    COPY_READ_BUFFER                 = 0x8F36,
    COPY_WRITE_BUFFER                = 0x8F37,
    INT_SAMPLER_2D_RECT              = 0x8DCD,
    INT_SAMPLER_BUFFER               = 0x8DD0,
    INVALID_INDEX                    = 0xFFFFFFFF,
    MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS = 0x8A33,
    MAX_COMBINED_UNIFORM_BLOCKS      = 0x8A2E,
    MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS = 0x8A31,
    MAX_FRAGMENT_UNIFORM_BLOCKS      = 0x8A2D,
    MAX_RECTANGLE_TEXTURE_SIZE       = 0x84F8,
    MAX_TEXTURE_BUFFER_SIZE          = 0x8C2B,
    MAX_UNIFORM_BLOCK_SIZE           = 0x8A30,
    MAX_UNIFORM_BUFFER_BINDINGS      = 0x8A2F,
    MAX_VERTEX_UNIFORM_BLOCKS        = 0x8A2B,
    PRIMITIVE_RESTART                = 0x8F9D,
    PRIMITIVE_RESTART_INDEX          = 0x8F9E,
    PROXY_TEXTURE_RECTANGLE          = 0x84F7,
    R16_SNORM                        = 0x8F98,
    R8_SNORM                         = 0x8F94,
    RG16_SNORM                       = 0x8F99,
    RG8_SNORM                        = 0x8F95,
    RGB16_SNORM                      = 0x8F9A,
    RGB8_SNORM                       = 0x8F96,
    RGBA16_SNORM                     = 0x8F9B,
    RGBA8_SNORM                      = 0x8F97,
    SAMPLER_2D_RECT                  = 0x8B63,
    SAMPLER_2D_RECT_SHADOW           = 0x8B64,
    SAMPLER_BUFFER                   = 0x8DC2,
    SIGNED_NORMALIZED                = 0x8F9C,
    TEXTURE_BINDING_BUFFER           = 0x8C2C,
    TEXTURE_BINDING_RECTANGLE        = 0x84F6,
    TEXTURE_BUFFER                   = 0x8C2A,
    TEXTURE_BUFFER_DATA_STORE_BINDING = 0x8C2D,
    TEXTURE_RECTANGLE                = 0x84F5,
    UNIFORM_ARRAY_STRIDE             = 0x8A3C,
    UNIFORM_BLOCK_ACTIVE_UNIFORMS    = 0x8A42,
    UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES = 0x8A43,
    UNIFORM_BLOCK_BINDING            = 0x8A3F,
    UNIFORM_BLOCK_DATA_SIZE          = 0x8A40,
    UNIFORM_BLOCK_INDEX              = 0x8A3A,
    UNIFORM_BLOCK_NAME_LENGTH        = 0x8A41,
    UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER = 0x8A46,
    UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER = 0x8A44,
    UNIFORM_BUFFER                   = 0x8A11,
    UNIFORM_BUFFER_BINDING           = 0x8A28,
    UNIFORM_BUFFER_OFFSET_ALIGNMENT  = 0x8A34,
    UNIFORM_BUFFER_SIZE              = 0x8A2A,
    UNIFORM_BUFFER_START             = 0x8A29,
    UNIFORM_IS_ROW_MAJOR             = 0x8A3E,
    UNIFORM_MATRIX_STRIDE            = 0x8A3D,
    UNIFORM_NAME_LENGTH              = 0x8A39,
    UNIFORM_OFFSET                   = 0x8A3B,
    UNIFORM_SIZE                     = 0x8A38,
    UNIFORM_TYPE                     = 0x8A37,
    UNSIGNED_INT_SAMPLER_2D_RECT     = 0x8DD5,
    UNSIGNED_INT_SAMPLER_BUFFER      = 0x8DD8,

    // Version: 3.2
    ALREADY_SIGNALED                 = 0x911A,
    CONDITION_SATISFIED              = 0x911C,
    CONTEXT_COMPATIBILITY_PROFILE_BIT = 0x00000002,
    CONTEXT_CORE_PROFILE_BIT         = 0x00000001,
    CONTEXT_PROFILE_MASK             = 0x9126,
    DEPTH_CLAMP                      = 0x864F,
    FIRST_VERTEX_CONVENTION          = 0x8E4D,
    FRAMEBUFFER_ATTACHMENT_LAYERED   = 0x8DA7,
    FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS = 0x8DA8,
    GEOMETRY_INPUT_TYPE              = 0x8917,
    GEOMETRY_OUTPUT_TYPE             = 0x8918,
    GEOMETRY_SHADER                  = 0x8DD9,
    GEOMETRY_VERTICES_OUT            = 0x8916,
    INT_SAMPLER_2D_MULTISAMPLE       = 0x9109,
    INT_SAMPLER_2D_MULTISAMPLE_ARRAY = 0x910C,
    LAST_VERTEX_CONVENTION           = 0x8E4E,
    LINES_ADJACENCY                  = 0x000A,
    LINE_STRIP_ADJACENCY             = 0x000B,
    MAX_COLOR_TEXTURE_SAMPLES        = 0x910E,
    MAX_DEPTH_TEXTURE_SAMPLES        = 0x910F,
    MAX_FRAGMENT_INPUT_COMPONENTS    = 0x9125,
    MAX_GEOMETRY_INPUT_COMPONENTS    = 0x9123,
    MAX_GEOMETRY_OUTPUT_COMPONENTS   = 0x9124,
    MAX_GEOMETRY_OUTPUT_VERTICES     = 0x8DE0,
    MAX_GEOMETRY_TEXTURE_IMAGE_UNITS = 0x8C29,
    MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS = 0x8DE1,
    MAX_GEOMETRY_UNIFORM_COMPONENTS  = 0x8DDF,
    MAX_INTEGER_SAMPLES              = 0x9110,
    MAX_SAMPLE_MASK_WORDS            = 0x8E59,
    MAX_SERVER_WAIT_TIMEOUT          = 0x9111,
    MAX_VERTEX_OUTPUT_COMPONENTS     = 0x9122,
    OBJECT_TYPE                      = 0x9112,
    PROGRAM_POINT_SIZE               = 0x8642,
    PROVOKING_VERTEX                 = 0x8E4F,
    PROXY_TEXTURE_2D_MULTISAMPLE     = 0x9101,
    PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY = 0x9103,
    QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION = 0x8E4C,
    SAMPLER_2D_MULTISAMPLE           = 0x9108,
    SAMPLER_2D_MULTISAMPLE_ARRAY     = 0x910B,
    SAMPLE_MASK                      = 0x8E51,
    SAMPLE_MASK_VALUE                = 0x8E52,
    SAMPLE_POSITION                  = 0x8E50,
    SIGNALED                         = 0x9119,
    SYNC_CONDITION                   = 0x9113,
    SYNC_FENCE                       = 0x9116,
    SYNC_FLAGS                       = 0x9115,
    SYNC_FLUSH_COMMANDS_BIT          = 0x00000001,
    SYNC_GPU_COMMANDS_COMPLETE       = 0x9117,
    SYNC_STATUS                      = 0x9114,
    TEXTURE_2D_MULTISAMPLE           = 0x9100,
    TEXTURE_2D_MULTISAMPLE_ARRAY     = 0x9102,
    TEXTURE_BINDING_2D_MULTISAMPLE   = 0x9104,
    TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY = 0x9105,
    TEXTURE_CUBE_MAP_SEAMLESS        = 0x884F,
    TEXTURE_FIXED_SAMPLE_LOCATIONS   = 0x9107,
    TEXTURE_SAMPLES                  = 0x9106,
    TIMEOUT_EXPIRED                  = 0x911B,
    TIMEOUT_IGNORED                  = 0xFFFFFFFFFFFFFFFF,
    TRIANGLES_ADJACENCY              = 0x000C,
    TRIANGLE_STRIP_ADJACENCY         = 0x000D,
    UNSIGNALED                       = 0x9118,
    UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE = 0x910A,
    UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY = 0x910D,
    WAIT_FAILED_                     = 0x911D,

    // Version: 3.3
    ANY_SAMPLES_PASSED               = 0x8C2F,
    INT_2_10_10_10_REV               = 0x8D9F,
    MAX_DUAL_SOURCE_DRAW_BUFFERS     = 0x88FC,
    ONE_MINUS_SRC1_ALPHA             = 0x88FB,
    ONE_MINUS_SRC1_COLOR             = 0x88FA,
    RGB10_A2UI                       = 0x906F,
    SAMPLER_BINDING                  = 0x8919,
    SRC1_COLOR                       = 0x88F9,
    TEXTURE_SWIZZLE_A                = 0x8E45,
    TEXTURE_SWIZZLE_B                = 0x8E44,
    TEXTURE_SWIZZLE_G                = 0x8E43,
    TEXTURE_SWIZZLE_R                = 0x8E42,
    TEXTURE_SWIZZLE_RGBA             = 0x8E46,
    TIMESTAMP                        = 0x8E28,
    TIME_ELAPSED                     = 0x88BF,
    VERTEX_ATTRIB_ARRAY_DIVISOR      = 0x88FE,

  };

  // Extension: 1.0
  extern void (CODEGEN_FUNCPTR *BlendFunc)(GLenum sfactor, GLenum dfactor);
  extern void (CODEGEN_FUNCPTR *Clear)(GLbitfield mask);
  extern void (CODEGEN_FUNCPTR *ClearColor)(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
  extern void (CODEGEN_FUNCPTR *ClearDepth)(GLdouble depth);
  extern void (CODEGEN_FUNCPTR *ClearStencil)(GLint s);
  extern void (CODEGEN_FUNCPTR *ColorMask)(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
  extern void (CODEGEN_FUNCPTR *CullFace)(GLenum mode);
  extern void (CODEGEN_FUNCPTR *DepthFunc)(GLenum func);
  extern void (CODEGEN_FUNCPTR *DepthMask)(GLboolean flag);
  extern void (CODEGEN_FUNCPTR *DepthRange)(GLdouble ren_near, GLdouble ren_far);
  extern void (CODEGEN_FUNCPTR *Disable)(GLenum cap);
  extern void (CODEGEN_FUNCPTR *DrawBuffer)(GLenum mode);
  extern void (CODEGEN_FUNCPTR *Enable)(GLenum cap);
  extern void (CODEGEN_FUNCPTR *Finish)();
  extern void (CODEGEN_FUNCPTR *Flush)();
  extern void (CODEGEN_FUNCPTR *FrontFace)(GLenum mode);
  extern void (CODEGEN_FUNCPTR *GetBooleanv)(GLenum pname, GLboolean * params);
  extern void (CODEGEN_FUNCPTR *GetDoublev)(GLenum pname, GLdouble * params);
  extern GLenum (CODEGEN_FUNCPTR *GetError)();
  extern void (CODEGEN_FUNCPTR *GetFloatv)(GLenum pname, GLfloat * params);
  extern void (CODEGEN_FUNCPTR *GetIntegerv)(GLenum pname, GLint * params);
  extern const GLubyte * (CODEGEN_FUNCPTR *GetString)(GLenum name);
  extern void (CODEGEN_FUNCPTR *GetTexImage)(GLenum target, GLint level, GLenum format, GLenum type, GLvoid * pixels);
  extern void (CODEGEN_FUNCPTR *GetTexLevelParameterfv)(GLenum target, GLint level, GLenum pname, GLfloat * params);
  extern void (CODEGEN_FUNCPTR *GetTexLevelParameteriv)(GLenum target, GLint level, GLenum pname, GLint * params);
  extern void (CODEGEN_FUNCPTR *GetTexParameterfv)(GLenum target, GLenum pname, GLfloat * params);
  extern void (CODEGEN_FUNCPTR *GetTexParameteriv)(GLenum target, GLenum pname, GLint * params);
  extern void (CODEGEN_FUNCPTR *Hint)(GLenum target, GLenum mode);
  extern GLboolean (CODEGEN_FUNCPTR *IsEnabled)(GLenum cap);
  extern void (CODEGEN_FUNCPTR *LineWidth)(GLfloat width);
  extern void (CODEGEN_FUNCPTR *LogicOp)(GLenum opcode);
  extern void (CODEGEN_FUNCPTR *PixelStoref)(GLenum pname, GLfloat param);
  extern void (CODEGEN_FUNCPTR *PixelStorei)(GLenum pname, GLint param);
  extern void (CODEGEN_FUNCPTR *PointSize)(GLfloat size);
  extern void (CODEGEN_FUNCPTR *PolygonMode)(GLenum face, GLenum mode);
  extern void (CODEGEN_FUNCPTR *ReadBuffer)(GLenum mode);
  extern void (CODEGEN_FUNCPTR *ReadPixels)(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid * pixels);
  extern void (CODEGEN_FUNCPTR *Scissor)(GLint x, GLint y, GLsizei width, GLsizei height);
  extern void (CODEGEN_FUNCPTR *StencilFunc)(GLenum func, GLint ref, GLuint mask);
  extern void (CODEGEN_FUNCPTR *StencilMask)(GLuint mask);
  extern void (CODEGEN_FUNCPTR *StencilOp)(GLenum fail, GLenum zfail, GLenum zpass);
  extern void (CODEGEN_FUNCPTR *TexImage1D)(GLenum target, GLint level, GLint internalformat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid * pixels);
  extern void (CODEGEN_FUNCPTR *TexImage2D)(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid * pixels);
  extern void (CODEGEN_FUNCPTR *TexParameterf)(GLenum target, GLenum pname, GLfloat param);
  extern void (CODEGEN_FUNCPTR *TexParameterfv)(GLenum target, GLenum pname, const GLfloat * params);
  extern void (CODEGEN_FUNCPTR *TexParameteri)(GLenum target, GLenum pname, GLint param);
  extern void (CODEGEN_FUNCPTR *TexParameteriv)(GLenum target, GLenum pname, const GLint * params);
  extern void (CODEGEN_FUNCPTR *Viewport)(GLint x, GLint y, GLsizei width, GLsizei height);

  // Extension: 1.1
  extern void (CODEGEN_FUNCPTR *BindTexture)(GLenum target, GLuint texture);
  extern void (CODEGEN_FUNCPTR *CopyTexImage1D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLint border);
  extern void (CODEGEN_FUNCPTR *CopyTexImage2D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
  extern void (CODEGEN_FUNCPTR *CopyTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
  extern void (CODEGEN_FUNCPTR *CopyTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
  extern void (CODEGEN_FUNCPTR *DeleteTextures)(GLsizei n, const GLuint * textures);
  extern void (CODEGEN_FUNCPTR *DrawArrays)(GLenum mode, GLint first, GLsizei count);
  extern void (CODEGEN_FUNCPTR *DrawElements)(GLenum mode, GLsizei count, GLenum type, const GLvoid * indices);
  extern void (CODEGEN_FUNCPTR *GenTextures)(GLsizei n, GLuint * textures);
  extern GLboolean (CODEGEN_FUNCPTR *IsTexture)(GLuint texture);
  extern void (CODEGEN_FUNCPTR *PolygonOffset)(GLfloat factor, GLfloat units);
  extern void (CODEGEN_FUNCPTR *TexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const GLvoid * pixels);
  extern void (CODEGEN_FUNCPTR *TexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid * pixels);

  // Extension: 1.2
  extern void (CODEGEN_FUNCPTR *BlendColor)(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
  extern void (CODEGEN_FUNCPTR *BlendEquation)(GLenum mode);
  extern void (CODEGEN_FUNCPTR *CopyTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
  extern void (CODEGEN_FUNCPTR *DrawRangeElements)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid * indices);
  extern void (CODEGEN_FUNCPTR *TexImage3D)(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid * pixels);
  extern void (CODEGEN_FUNCPTR *TexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid * pixels);

  // Extension: 1.3
  extern void (CODEGEN_FUNCPTR *ActiveTexture)(GLenum texture);
  extern void (CODEGEN_FUNCPTR *CompressedTexImage1D)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLint border, GLsizei imageSize, const GLvoid * data);
  extern void (CODEGEN_FUNCPTR *CompressedTexImage2D)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid * data);
  extern void (CODEGEN_FUNCPTR *CompressedTexImage3D)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const GLvoid * data);
  extern void (CODEGEN_FUNCPTR *CompressedTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLsizei imageSize, const GLvoid * data);
  extern void (CODEGEN_FUNCPTR *CompressedTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const GLvoid * data);
  extern void (CODEGEN_FUNCPTR *CompressedTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const GLvoid * data);
  extern void (CODEGEN_FUNCPTR *GetCompressedTexImage)(GLenum target, GLint level, GLvoid * img);
  extern void (CODEGEN_FUNCPTR *SampleCoverage)(GLfloat value, GLboolean invert);

  // Extension: 1.4
  extern void (CODEGEN_FUNCPTR *BlendFuncSeparate)(GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
  extern void (CODEGEN_FUNCPTR *MultiDrawArrays)(GLenum mode, const GLint * first, const GLsizei * count, GLsizei drawcount);
  extern void (CODEGEN_FUNCPTR *MultiDrawElements)(GLenum mode, const GLsizei * count, GLenum type, const GLvoid *const* indices, GLsizei drawcount);
  extern void (CODEGEN_FUNCPTR *PointParameterf)(GLenum pname, GLfloat param);
  extern void (CODEGEN_FUNCPTR *PointParameterfv)(GLenum pname, const GLfloat * params);
  extern void (CODEGEN_FUNCPTR *PointParameteri)(GLenum pname, GLint param);
  extern void (CODEGEN_FUNCPTR *PointParameteriv)(GLenum pname, const GLint * params);

  // Extension: 1.5
  extern void (CODEGEN_FUNCPTR *BeginQuery)(GLenum target, GLuint id);
  extern void (CODEGEN_FUNCPTR *BindBuffer)(GLenum target, GLuint buffer);
  extern void (CODEGEN_FUNCPTR *BufferData)(GLenum target, GLsizeiptr size, const GLvoid * data, GLenum usage);
  extern void (CODEGEN_FUNCPTR *BufferSubData)(GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid * data);
  extern void (CODEGEN_FUNCPTR *DeleteBuffers)(GLsizei n, const GLuint * buffers);
  extern void (CODEGEN_FUNCPTR *DeleteQueries)(GLsizei n, const GLuint * ids);
  extern void (CODEGEN_FUNCPTR *EndQuery)(GLenum target);
  extern void (CODEGEN_FUNCPTR *GenBuffers)(GLsizei n, GLuint * buffers);
  extern void (CODEGEN_FUNCPTR *GenQueries)(GLsizei n, GLuint * ids);
  extern void (CODEGEN_FUNCPTR *GetBufferParameteriv)(GLenum target, GLenum pname, GLint * params);
  extern void (CODEGEN_FUNCPTR *GetBufferPointerv)(GLenum target, GLenum pname, GLvoid ** params);
  extern void (CODEGEN_FUNCPTR *GetBufferSubData)(GLenum target, GLintptr offset, GLsizeiptr size, GLvoid * data);
  extern void (CODEGEN_FUNCPTR *GetQueryObjectiv)(GLuint id, GLenum pname, GLint * params);
  extern void (CODEGEN_FUNCPTR *GetQueryObjectuiv)(GLuint id, GLenum pname, GLuint * params);
  extern void (CODEGEN_FUNCPTR *GetQueryiv)(GLenum target, GLenum pname, GLint * params);
  extern GLboolean (CODEGEN_FUNCPTR *IsBuffer)(GLuint buffer);
  extern GLboolean (CODEGEN_FUNCPTR *IsQuery)(GLuint id);
  extern void * (CODEGEN_FUNCPTR *MapBuffer)(GLenum target, GLenum access);
  extern GLboolean (CODEGEN_FUNCPTR *UnmapBuffer)(GLenum target);

  // Extension: 2.0
  extern void (CODEGEN_FUNCPTR *AttachShader)(GLuint program, GLuint shader);
  extern void (CODEGEN_FUNCPTR *BindAttribLocation)(GLuint program, GLuint index, const GLchar * name);
  extern void (CODEGEN_FUNCPTR *BlendEquationSeparate)(GLenum modeRGB, GLenum modeAlpha);
  extern void (CODEGEN_FUNCPTR *CompileShader)(GLuint shader);
  extern GLuint (CODEGEN_FUNCPTR *CreateProgram)();
  extern GLuint (CODEGEN_FUNCPTR *CreateShader)(GLenum type);
  extern void (CODEGEN_FUNCPTR *DeleteProgram)(GLuint program);
  extern void (CODEGEN_FUNCPTR *DeleteShader)(GLuint shader);
  extern void (CODEGEN_FUNCPTR *DetachShader)(GLuint program, GLuint shader);
  extern void (CODEGEN_FUNCPTR *DisableVertexAttribArray)(GLuint index);
  extern void (CODEGEN_FUNCPTR *DrawBuffers)(GLsizei n, const GLenum * bufs);
  extern void (CODEGEN_FUNCPTR *EnableVertexAttribArray)(GLuint index);
  extern void (CODEGEN_FUNCPTR *GetActiveAttrib)(GLuint program, GLuint index, GLsizei bufSize, GLsizei * length, GLint * size, GLenum * type, GLchar * name);
  extern void (CODEGEN_FUNCPTR *GetActiveUniform)(GLuint program, GLuint index, GLsizei bufSize, GLsizei * length, GLint * size, GLenum * type, GLchar * name);
  extern void (CODEGEN_FUNCPTR *GetAttachedShaders)(GLuint program, GLsizei maxCount, GLsizei * count, GLuint * shaders);
  extern GLint (CODEGEN_FUNCPTR *GetAttribLocation)(GLuint program, const GLchar * name);
  extern void (CODEGEN_FUNCPTR *GetProgramInfoLog)(GLuint program, GLsizei bufSize, GLsizei * length, GLchar * infoLog);
  extern void (CODEGEN_FUNCPTR *GetProgramiv)(GLuint program, GLenum pname, GLint * params);
  extern void (CODEGEN_FUNCPTR *GetShaderInfoLog)(GLuint shader, GLsizei bufSize, GLsizei * length, GLchar * infoLog);
  extern void (CODEGEN_FUNCPTR *GetShaderSource)(GLuint shader, GLsizei bufSize, GLsizei * length, GLchar * source);
  extern void (CODEGEN_FUNCPTR *GetShaderiv)(GLuint shader, GLenum pname, GLint * params);
  extern GLint (CODEGEN_FUNCPTR *GetUniformLocation)(GLuint program, const GLchar * name);
  extern void (CODEGEN_FUNCPTR *GetUniformfv)(GLuint program, GLint location, GLfloat * params);
  extern void (CODEGEN_FUNCPTR *GetUniformiv)(GLuint program, GLint location, GLint * params);
  extern void (CODEGEN_FUNCPTR *GetVertexAttribPointerv)(GLuint index, GLenum pname, GLvoid ** pointer);
  extern void (CODEGEN_FUNCPTR *GetVertexAttribdv)(GLuint index, GLenum pname, GLdouble * params);
  extern void (CODEGEN_FUNCPTR *GetVertexAttribfv)(GLuint index, GLenum pname, GLfloat * params);
  extern void (CODEGEN_FUNCPTR *GetVertexAttribiv)(GLuint index, GLenum pname, GLint * params);
  extern GLboolean (CODEGEN_FUNCPTR *IsProgram)(GLuint program);
  extern GLboolean (CODEGEN_FUNCPTR *IsShader)(GLuint shader);
  extern void (CODEGEN_FUNCPTR *LinkProgram)(GLuint program);
  extern void (CODEGEN_FUNCPTR *ShaderSource)(GLuint shader, GLsizei count, const GLchar *const* string, const GLint * length);
  extern void (CODEGEN_FUNCPTR *StencilFuncSeparate)(GLenum face, GLenum func, GLint ref, GLuint mask);
  extern void (CODEGEN_FUNCPTR *StencilMaskSeparate)(GLenum face, GLuint mask);
  extern void (CODEGEN_FUNCPTR *StencilOpSeparate)(GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass);
  extern void (CODEGEN_FUNCPTR *Uniform1f)(GLint location, GLfloat v0);
  extern void (CODEGEN_FUNCPTR *Uniform1fv)(GLint location, GLsizei count, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *Uniform1i)(GLint location, GLint v0);
  extern void (CODEGEN_FUNCPTR *Uniform1iv)(GLint location, GLsizei count, const GLint * value);
  extern void (CODEGEN_FUNCPTR *Uniform2f)(GLint location, GLfloat v0, GLfloat v1);
  extern void (CODEGEN_FUNCPTR *Uniform2fv)(GLint location, GLsizei count, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *Uniform2i)(GLint location, GLint v0, GLint v1);
  extern void (CODEGEN_FUNCPTR *Uniform2iv)(GLint location, GLsizei count, const GLint * value);
  extern void (CODEGEN_FUNCPTR *Uniform3f)(GLint location, GLfloat v0, GLfloat v1, GLfloat v2);
  extern void (CODEGEN_FUNCPTR *Uniform3fv)(GLint location, GLsizei count, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *Uniform3i)(GLint location, GLint v0, GLint v1, GLint v2);
  extern void (CODEGEN_FUNCPTR *Uniform3iv)(GLint location, GLsizei count, const GLint * value);
  extern void (CODEGEN_FUNCPTR *Uniform4f)(GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
  extern void (CODEGEN_FUNCPTR *Uniform4fv)(GLint location, GLsizei count, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *Uniform4i)(GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
  extern void (CODEGEN_FUNCPTR *Uniform4iv)(GLint location, GLsizei count, const GLint * value);
  extern void (CODEGEN_FUNCPTR *UniformMatrix2fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *UniformMatrix3fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *UniformMatrix4fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *UseProgram)(GLuint program);
  extern void (CODEGEN_FUNCPTR *ValidateProgram)(GLuint program);
  extern void (CODEGEN_FUNCPTR *VertexAttrib1d)(GLuint index, GLdouble x);
  extern void (CODEGEN_FUNCPTR *VertexAttrib1dv)(GLuint index, const GLdouble * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib1f)(GLuint index, GLfloat x);
  extern void (CODEGEN_FUNCPTR *VertexAttrib1fv)(GLuint index, const GLfloat * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib1s)(GLuint index, GLshort x);
  extern void (CODEGEN_FUNCPTR *VertexAttrib1sv)(GLuint index, const GLshort * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib2d)(GLuint index, GLdouble x, GLdouble y);
  extern void (CODEGEN_FUNCPTR *VertexAttrib2dv)(GLuint index, const GLdouble * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib2f)(GLuint index, GLfloat x, GLfloat y);
  extern void (CODEGEN_FUNCPTR *VertexAttrib2fv)(GLuint index, const GLfloat * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib2s)(GLuint index, GLshort x, GLshort y);
  extern void (CODEGEN_FUNCPTR *VertexAttrib2sv)(GLuint index, const GLshort * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib3d)(GLuint index, GLdouble x, GLdouble y, GLdouble z);
  extern void (CODEGEN_FUNCPTR *VertexAttrib3dv)(GLuint index, const GLdouble * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib3f)(GLuint index, GLfloat x, GLfloat y, GLfloat z);
  extern void (CODEGEN_FUNCPTR *VertexAttrib3fv)(GLuint index, const GLfloat * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib3s)(GLuint index, GLshort x, GLshort y, GLshort z);
  extern void (CODEGEN_FUNCPTR *VertexAttrib3sv)(GLuint index, const GLshort * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4Nbv)(GLuint index, const GLbyte * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4Niv)(GLuint index, const GLint * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4Nsv)(GLuint index, const GLshort * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4Nub)(GLuint index, GLubyte x, GLubyte y, GLubyte z, GLubyte w);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4Nubv)(GLuint index, const GLubyte * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4Nuiv)(GLuint index, const GLuint * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4Nusv)(GLuint index, const GLushort * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4bv)(GLuint index, const GLbyte * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4d)(GLuint index, GLdouble x, GLdouble y, GLdouble z, GLdouble w);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4dv)(GLuint index, const GLdouble * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4f)(GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4fv)(GLuint index, const GLfloat * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4iv)(GLuint index, const GLint * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4s)(GLuint index, GLshort x, GLshort y, GLshort z, GLshort w);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4sv)(GLuint index, const GLshort * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4ubv)(GLuint index, const GLubyte * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4uiv)(GLuint index, const GLuint * v);
  extern void (CODEGEN_FUNCPTR *VertexAttrib4usv)(GLuint index, const GLushort * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribPointer)(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid * pointer);

  // Extension: 2.1
  extern void (CODEGEN_FUNCPTR *UniformMatrix2x3fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *UniformMatrix2x4fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *UniformMatrix3x2fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *UniformMatrix3x4fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *UniformMatrix4x2fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *UniformMatrix4x3fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);

  // Extension: 3.0
  extern void (CODEGEN_FUNCPTR *BeginConditionalRender)(GLuint id, GLenum mode);
  extern void (CODEGEN_FUNCPTR *BeginTransformFeedback)(GLenum primitiveMode);
  extern void (CODEGEN_FUNCPTR *BindBufferBase)(GLenum target, GLuint index, GLuint buffer);
  extern void (CODEGEN_FUNCPTR *BindBufferRange)(GLenum target, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size);
  extern void (CODEGEN_FUNCPTR *BindFragDataLocation)(GLuint program, GLuint color, const GLchar * name);
  extern void (CODEGEN_FUNCPTR *BindFramebuffer)(GLenum target, GLuint framebuffer);
  extern void (CODEGEN_FUNCPTR *BindRenderbuffer)(GLenum target, GLuint renderbuffer);
  extern void (CODEGEN_FUNCPTR *BindVertexArray)(GLuint ren_array);
  extern void (CODEGEN_FUNCPTR *BlitFramebuffer)(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
  extern GLenum (CODEGEN_FUNCPTR *CheckFramebufferStatus)(GLenum target);
  extern void (CODEGEN_FUNCPTR *ClampColor)(GLenum target, GLenum clamp);
  extern void (CODEGEN_FUNCPTR *ClearBufferfi)(GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
  extern void (CODEGEN_FUNCPTR *ClearBufferfv)(GLenum buffer, GLint drawbuffer, const GLfloat * value);
  extern void (CODEGEN_FUNCPTR *ClearBufferiv)(GLenum buffer, GLint drawbuffer, const GLint * value);
  extern void (CODEGEN_FUNCPTR *ClearBufferuiv)(GLenum buffer, GLint drawbuffer, const GLuint * value);
  extern void (CODEGEN_FUNCPTR *ColorMaski)(GLuint index, GLboolean r, GLboolean g, GLboolean b, GLboolean a);
  extern void (CODEGEN_FUNCPTR *DeleteFramebuffers)(GLsizei n, const GLuint * framebuffers);
  extern void (CODEGEN_FUNCPTR *DeleteRenderbuffers)(GLsizei n, const GLuint * renderbuffers);
  extern void (CODEGEN_FUNCPTR *DeleteVertexArrays)(GLsizei n, const GLuint * arrays);
  extern void (CODEGEN_FUNCPTR *Disablei)(GLenum target, GLuint index);
  extern void (CODEGEN_FUNCPTR *Enablei)(GLenum target, GLuint index);
  extern void (CODEGEN_FUNCPTR *EndConditionalRender)();
  extern void (CODEGEN_FUNCPTR *EndTransformFeedback)();
  extern void (CODEGEN_FUNCPTR *FlushMappedBufferRange)(GLenum target, GLintptr offset, GLsizeiptr length);
  extern void (CODEGEN_FUNCPTR *FramebufferRenderbuffer)(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
  extern void (CODEGEN_FUNCPTR *FramebufferTexture1D)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
  extern void (CODEGEN_FUNCPTR *FramebufferTexture2D)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
  extern void (CODEGEN_FUNCPTR *FramebufferTexture3D)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset);
  extern void (CODEGEN_FUNCPTR *FramebufferTextureLayer)(GLenum target, GLenum attachment, GLuint texture, GLint level, GLint layer);
  extern void (CODEGEN_FUNCPTR *GenFramebuffers)(GLsizei n, GLuint * framebuffers);
  extern void (CODEGEN_FUNCPTR *GenRenderbuffers)(GLsizei n, GLuint * renderbuffers);
  extern void (CODEGEN_FUNCPTR *GenVertexArrays)(GLsizei n, GLuint * arrays);
  extern void (CODEGEN_FUNCPTR *GenerateMipmap)(GLenum target);
  extern void (CODEGEN_FUNCPTR *GetBooleani_v)(GLenum target, GLuint index, GLboolean * data);
  extern GLint (CODEGEN_FUNCPTR *GetFragDataLocation)(GLuint program, const GLchar * name);
  extern void (CODEGEN_FUNCPTR *GetFramebufferAttachmentParameteriv)(GLenum target, GLenum attachment, GLenum pname, GLint * params);
  extern void (CODEGEN_FUNCPTR *GetIntegeri_v)(GLenum target, GLuint index, GLint * data);
  extern void (CODEGEN_FUNCPTR *GetRenderbufferParameteriv)(GLenum target, GLenum pname, GLint * params);
  extern const GLubyte * (CODEGEN_FUNCPTR *GetStringi)(GLenum name, GLuint index);
  extern void (CODEGEN_FUNCPTR *GetTexParameterIiv)(GLenum target, GLenum pname, GLint * params);
  extern void (CODEGEN_FUNCPTR *GetTexParameterIuiv)(GLenum target, GLenum pname, GLuint * params);
  extern void (CODEGEN_FUNCPTR *GetTransformFeedbackVarying)(GLuint program, GLuint index, GLsizei bufSize, GLsizei * length, GLsizei * size, GLenum * type, GLchar * name);
  extern void (CODEGEN_FUNCPTR *GetUniformuiv)(GLuint program, GLint location, GLuint * params);
  extern void (CODEGEN_FUNCPTR *GetVertexAttribIiv)(GLuint index, GLenum pname, GLint * params);
  extern void (CODEGEN_FUNCPTR *GetVertexAttribIuiv)(GLuint index, GLenum pname, GLuint * params);
  extern GLboolean (CODEGEN_FUNCPTR *IsEnabledi)(GLenum target, GLuint index);
  extern GLboolean (CODEGEN_FUNCPTR *IsFramebuffer)(GLuint framebuffer);
  extern GLboolean (CODEGEN_FUNCPTR *IsRenderbuffer)(GLuint renderbuffer);
  extern GLboolean (CODEGEN_FUNCPTR *IsVertexArray)(GLuint ren_array);
  extern void * (CODEGEN_FUNCPTR *MapBufferRange)(GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access);
  extern void (CODEGEN_FUNCPTR *RenderbufferStorage)(GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
  extern void (CODEGEN_FUNCPTR *RenderbufferStorageMultisample)(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
  extern void (CODEGEN_FUNCPTR *TexParameterIiv)(GLenum target, GLenum pname, const GLint * params);
  extern void (CODEGEN_FUNCPTR *TexParameterIuiv)(GLenum target, GLenum pname, const GLuint * params);
  extern void (CODEGEN_FUNCPTR *TransformFeedbackVaryings)(GLuint program, GLsizei count, const GLchar *const* varyings, GLenum bufferMode);
  extern void (CODEGEN_FUNCPTR *Uniform1ui)(GLint location, GLuint v0);
  extern void (CODEGEN_FUNCPTR *Uniform1uiv)(GLint location, GLsizei count, const GLuint * value);
  extern void (CODEGEN_FUNCPTR *Uniform2ui)(GLint location, GLuint v0, GLuint v1);
  extern void (CODEGEN_FUNCPTR *Uniform2uiv)(GLint location, GLsizei count, const GLuint * value);
  extern void (CODEGEN_FUNCPTR *Uniform3ui)(GLint location, GLuint v0, GLuint v1, GLuint v2);
  extern void (CODEGEN_FUNCPTR *Uniform3uiv)(GLint location, GLsizei count, const GLuint * value);
  extern void (CODEGEN_FUNCPTR *Uniform4ui)(GLint location, GLuint v0, GLuint v1, GLuint v2, GLuint v3);
  extern void (CODEGEN_FUNCPTR *Uniform4uiv)(GLint location, GLsizei count, const GLuint * value);
  extern void (CODEGEN_FUNCPTR *VertexAttribI1i)(GLuint index, GLint x);
  extern void (CODEGEN_FUNCPTR *VertexAttribI1iv)(GLuint index, const GLint * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribI1ui)(GLuint index, GLuint x);
  extern void (CODEGEN_FUNCPTR *VertexAttribI1uiv)(GLuint index, const GLuint * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribI2i)(GLuint index, GLint x, GLint y);
  extern void (CODEGEN_FUNCPTR *VertexAttribI2iv)(GLuint index, const GLint * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribI2ui)(GLuint index, GLuint x, GLuint y);
  extern void (CODEGEN_FUNCPTR *VertexAttribI2uiv)(GLuint index, const GLuint * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribI3i)(GLuint index, GLint x, GLint y, GLint z);
  extern void (CODEGEN_FUNCPTR *VertexAttribI3iv)(GLuint index, const GLint * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribI3ui)(GLuint index, GLuint x, GLuint y, GLuint z);
  extern void (CODEGEN_FUNCPTR *VertexAttribI3uiv)(GLuint index, const GLuint * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribI4bv)(GLuint index, const GLbyte * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribI4i)(GLuint index, GLint x, GLint y, GLint z, GLint w);
  extern void (CODEGEN_FUNCPTR *VertexAttribI4iv)(GLuint index, const GLint * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribI4sv)(GLuint index, const GLshort * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribI4ubv)(GLuint index, const GLubyte * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribI4ui)(GLuint index, GLuint x, GLuint y, GLuint z, GLuint w);
  extern void (CODEGEN_FUNCPTR *VertexAttribI4uiv)(GLuint index, const GLuint * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribI4usv)(GLuint index, const GLushort * v);
  extern void (CODEGEN_FUNCPTR *VertexAttribIPointer)(GLuint index, GLint size, GLenum type, GLsizei stride, const GLvoid * pointer);

  // Extension: 3.1
  extern void (CODEGEN_FUNCPTR *CopyBufferSubData)(GLenum readTarget, GLenum writeTarget, GLintptr readOffset, GLintptr writeOffset, GLsizeiptr size);
  extern void (CODEGEN_FUNCPTR *DrawArraysInstanced)(GLenum mode, GLint first, GLsizei count, GLsizei instancecount);
  extern void (CODEGEN_FUNCPTR *DrawElementsInstanced)(GLenum mode, GLsizei count, GLenum type, const GLvoid * indices, GLsizei instancecount);
  extern void (CODEGEN_FUNCPTR *GetActiveUniformBlockName)(GLuint program, GLuint uniformBlockIndex, GLsizei bufSize, GLsizei * length, GLchar * uniformBlockName);
  extern void (CODEGEN_FUNCPTR *GetActiveUniformBlockiv)(GLuint program, GLuint uniformBlockIndex, GLenum pname, GLint * params);
  extern void (CODEGEN_FUNCPTR *GetActiveUniformName)(GLuint program, GLuint uniformIndex, GLsizei bufSize, GLsizei * length, GLchar * uniformName);
  extern void (CODEGEN_FUNCPTR *GetActiveUniformsiv)(GLuint program, GLsizei uniformCount, const GLuint * uniformIndices, GLenum pname, GLint * params);
  extern GLuint (CODEGEN_FUNCPTR *GetUniformBlockIndex)(GLuint program, const GLchar * uniformBlockName);
  extern void (CODEGEN_FUNCPTR *GetUniformIndices)(GLuint program, GLsizei uniformCount, const GLchar *const* uniformNames, GLuint * uniformIndices);
  extern void (CODEGEN_FUNCPTR *PrimitiveRestartIndex)(GLuint index);
  extern void (CODEGEN_FUNCPTR *TexBuffer)(GLenum target, GLenum internalformat, GLuint buffer);
  extern void (CODEGEN_FUNCPTR *UniformBlockBinding)(GLuint program, GLuint uniformBlockIndex, GLuint uniformBlockBinding);

  // Extension: 3.2
  extern GLenum (CODEGEN_FUNCPTR *ClientWaitSync)(GLsync sync, GLbitfield flags, GLuint64 timeout);
  extern void (CODEGEN_FUNCPTR *DeleteSync)(GLsync sync);
  extern void (CODEGEN_FUNCPTR *DrawElementsBaseVertex)(GLenum mode, GLsizei count, GLenum type, const GLvoid * indices, GLint basevertex);
  extern void (CODEGEN_FUNCPTR *DrawElementsInstancedBaseVertex)(GLenum mode, GLsizei count, GLenum type, const GLvoid * indices, GLsizei instancecount, GLint basevertex);
  extern void (CODEGEN_FUNCPTR *DrawRangeElementsBaseVertex)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid * indices, GLint basevertex);
  extern GLsync (CODEGEN_FUNCPTR *FenceSync)(GLenum condition, GLbitfield flags);
  extern void (CODEGEN_FUNCPTR *FramebufferTexture)(GLenum target, GLenum attachment, GLuint texture, GLint level);
  extern void (CODEGEN_FUNCPTR *GetBufferParameteri64v)(GLenum target, GLenum pname, GLint64 * params);
  extern void (CODEGEN_FUNCPTR *GetInteger64i_v)(GLenum target, GLuint index, GLint64 * data);
  extern void (CODEGEN_FUNCPTR *GetInteger64v)(GLenum pname, GLint64 * params);
  extern void (CODEGEN_FUNCPTR *GetMultisamplefv)(GLenum pname, GLuint index, GLfloat * val);
  extern void (CODEGEN_FUNCPTR *GetSynciv)(GLsync sync, GLenum pname, GLsizei bufSize, GLsizei * length, GLint * values);
  extern GLboolean (CODEGEN_FUNCPTR *IsSync)(GLsync sync);
  extern void (CODEGEN_FUNCPTR *MultiDrawElementsBaseVertex)(GLenum mode, const GLsizei * count, GLenum type, const GLvoid *const* indices, GLsizei drawcount, const GLint * basevertex);
  extern void (CODEGEN_FUNCPTR *ProvokingVertex)(GLenum mode);
  extern void (CODEGEN_FUNCPTR *SampleMaski)(GLuint index, GLbitfield mask);
  extern void (CODEGEN_FUNCPTR *TexImage2DMultisample)(GLenum target, GLsizei samples, GLint internalformat, GLsizei width, GLsizei height, GLboolean fixedsamplelocations);
  extern void (CODEGEN_FUNCPTR *TexImage3DMultisample)(GLenum target, GLsizei samples, GLint internalformat, GLsizei width, GLsizei height, GLsizei depth, GLboolean fixedsamplelocations);
  extern void (CODEGEN_FUNCPTR *WaitSync)(GLsync sync, GLbitfield flags, GLuint64 timeout);

  // Extension: 3.3
  extern void (CODEGEN_FUNCPTR *BindFragDataLocationIndexed)(GLuint program, GLuint colorNumber, GLuint index, const GLchar * name);
  extern void (CODEGEN_FUNCPTR *BindSampler)(GLuint unit, GLuint sampler);
  extern void (CODEGEN_FUNCPTR *DeleteSamplers)(GLsizei count, const GLuint * samplers);
  extern void (CODEGEN_FUNCPTR *GenSamplers)(GLsizei count, GLuint * samplers);
  extern GLint (CODEGEN_FUNCPTR *GetFragDataIndex)(GLuint program, const GLchar * name);
  extern void (CODEGEN_FUNCPTR *GetQueryObjecti64v)(GLuint id, GLenum pname, GLint64 * params);
  extern void (CODEGEN_FUNCPTR *GetQueryObjectui64v)(GLuint id, GLenum pname, GLuint64 * params);
  extern void (CODEGEN_FUNCPTR *GetSamplerParameterIiv)(GLuint sampler, GLenum pname, GLint * params);
  extern void (CODEGEN_FUNCPTR *GetSamplerParameterIuiv)(GLuint sampler, GLenum pname, GLuint * params);
  extern void (CODEGEN_FUNCPTR *GetSamplerParameterfv)(GLuint sampler, GLenum pname, GLfloat * params);
  extern void (CODEGEN_FUNCPTR *GetSamplerParameteriv)(GLuint sampler, GLenum pname, GLint * params);
  extern GLboolean (CODEGEN_FUNCPTR *IsSampler)(GLuint sampler);
  extern void (CODEGEN_FUNCPTR *QueryCounter)(GLuint id, GLenum target);
  extern void (CODEGEN_FUNCPTR *SamplerParameterIiv)(GLuint sampler, GLenum pname, const GLint * param);
  extern void (CODEGEN_FUNCPTR *SamplerParameterIuiv)(GLuint sampler, GLenum pname, const GLuint * param);
  extern void (CODEGEN_FUNCPTR *SamplerParameterf)(GLuint sampler, GLenum pname, GLfloat param);
  extern void (CODEGEN_FUNCPTR *SamplerParameterfv)(GLuint sampler, GLenum pname, const GLfloat * param);
  extern void (CODEGEN_FUNCPTR *SamplerParameteri)(GLuint sampler, GLenum pname, GLint param);
  extern void (CODEGEN_FUNCPTR *SamplerParameteriv)(GLuint sampler, GLenum pname, const GLint * param);
  extern void (CODEGEN_FUNCPTR *VertexAttribDivisor)(GLuint index, GLuint divisor);
  extern void (CODEGEN_FUNCPTR *VertexAttribP1ui)(GLuint index, GLenum type, GLboolean normalized, GLuint value);
  extern void (CODEGEN_FUNCPTR *VertexAttribP1uiv)(GLuint index, GLenum type, GLboolean normalized, const GLuint * value);
  extern void (CODEGEN_FUNCPTR *VertexAttribP2ui)(GLuint index, GLenum type, GLboolean normalized, GLuint value);
  extern void (CODEGEN_FUNCPTR *VertexAttribP2uiv)(GLuint index, GLenum type, GLboolean normalized, const GLuint * value);
  extern void (CODEGEN_FUNCPTR *VertexAttribP3ui)(GLuint index, GLenum type, GLboolean normalized, GLuint value);
  extern void (CODEGEN_FUNCPTR *VertexAttribP3uiv)(GLuint index, GLenum type, GLboolean normalized, const GLuint * value);
  extern void (CODEGEN_FUNCPTR *VertexAttribP4ui)(GLuint index, GLenum type, GLboolean normalized, GLuint value);
  extern void (CODEGEN_FUNCPTR *VertexAttribP4uiv)(GLuint index, GLenum type, GLboolean normalized, const GLuint * value);

  namespace sys
  {
    void CheckExtensions();
  }

}
#endif //OPENGL_NOLOAD_STYLE_HPP
