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    #ifndef __glext_h_
    #define __glext_h_ 1
    
    #ifdef __cplusplus
    extern "C" {
    #endif
    
    /*
    ** Copyright (c) 2013-2014 The Khronos Group Inc.
    **
    ** Permission is hereby granted, free of charge, to any person obtaining a
    ** copy of this software and/or associated documentation files (the
    ** "Materials"), to deal in the Materials without restriction, including
    ** without limitation the rights to use, copy, modify, merge, publish,
    ** distribute, sublicense, and/or sell copies of the Materials, and to
    ** permit persons to whom the Materials are furnished to do so, subject to
    ** the following conditions:
    **
    ** The above copyright notice and this permission notice shall be included
    ** in all copies or substantial portions of the Materials.
    **
    ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
    ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
    ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
    ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
    ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
    */
    /*
    ** This header is generated from the Khronos OpenGL / OpenGL ES XML
    ** API Registry. The current version of the Registry, generator scripts
    ** used to make the header, and the header can be found at
    **   http://www.opengl.org/registry/
    **
    ** Khronos $Revision: 27684 $ on $Date: 2014-08-11 01:21:35 -0700 (Mon, 11 Aug 2014) $
    */
    
    #if defined(_WIN32) && !defined(APIENTRY) && !defined(__CYGWIN__) && !defined(__SCITECH_SNAP__)
    #ifndef WIN32_LEAN_AND_MEAN
    #define WIN32_LEAN_AND_MEAN 1
    #endif
    #include <windows.h>
    #endif
    
    #ifndef APIENTRY
    #define APIENTRY
    #endif
    #ifndef APIENTRYP
    #define APIENTRYP APIENTRY *
    #endif
    #ifndef GLAPI
    #define GLAPI extern
    #endif
    
    #define GL_GLEXT_VERSION 20140810
    
    /* Generated C header for:
     * API: gl
     * Profile: compatibility
     * Versions considered: .*
     * Versions emitted: 1\.[2-9]|[234]\.[0-9]
     * Default extensions included: gl
     * Additional extensions included: _nomatch_^
     * Extensions removed: _nomatch_^
     */
    
    #ifndef GL_VERSION_1_2
    #define GL_VERSION_1_2 1
    #define GL_UNSIGNED_BYTE_3_3_2            0x8032
    #define GL_UNSIGNED_SHORT_4_4_4_4         0x8033
    #define GL_UNSIGNED_SHORT_5_5_5_1         0x8034
    #define GL_UNSIGNED_INT_8_8_8_8           0x8035
    #define GL_UNSIGNED_INT_10_10_10_2        0x8036
    #define GL_TEXTURE_BINDING_3D             0x806A
    #define GL_PACK_SKIP_IMAGES               0x806B
    #define GL_PACK_IMAGE_HEIGHT              0x806C
    #define GL_UNPACK_SKIP_IMAGES             0x806D
    #define GL_UNPACK_IMAGE_HEIGHT            0x806E
    #define GL_TEXTURE_3D                     0x806F
    #define GL_PROXY_TEXTURE_3D               0x8070
    #define GL_TEXTURE_DEPTH                  0x8071
    #define GL_TEXTURE_WRAP_R                 0x8072
    #define GL_MAX_3D_TEXTURE_SIZE            0x8073
    #define GL_UNSIGNED_BYTE_2_3_3_REV        0x8362
    #define GL_UNSIGNED_SHORT_5_6_5           0x8363
    #define GL_UNSIGNED_SHORT_5_6_5_REV       0x8364
    #define GL_UNSIGNED_SHORT_4_4_4_4_REV     0x8365
    #define GL_UNSIGNED_SHORT_1_5_5_5_REV     0x8366
    #define GL_UNSIGNED_INT_8_8_8_8_REV       0x8367
    #define GL_UNSIGNED_INT_2_10_10_10_REV    0x8368
    #define GL_BGR                            0x80E0
    #define GL_BGRA                           0x80E1
    #define GL_MAX_ELEMENTS_VERTICES          0x80E8
    #define GL_MAX_ELEMENTS_INDICES           0x80E9
    #define GL_CLAMP_TO_EDGE                  0x812F
    #define GL_TEXTURE_MIN_LOD                0x813A
    #define GL_TEXTURE_MAX_LOD                0x813B
    #define GL_TEXTURE_BASE_LEVEL             0x813C
    #define GL_TEXTURE_MAX_LEVEL              0x813D
    #define GL_SMOOTH_POINT_SIZE_RANGE        0x0B12
    #define GL_SMOOTH_POINT_SIZE_GRANULARITY  0x0B13
    #define GL_SMOOTH_LINE_WIDTH_RANGE        0x0B22
    #define GL_SMOOTH_LINE_WIDTH_GRANULARITY  0x0B23
    #define GL_ALIASED_LINE_WIDTH_RANGE       0x846E
    #define GL_RESCALE_NORMAL                 0x803A
    #define GL_LIGHT_MODEL_COLOR_CONTROL      0x81F8
    #define GL_SINGLE_COLOR                   0x81F9
    #define GL_SEPARATE_SPECULAR_COLOR        0x81FA
    #define GL_ALIASED_POINT_SIZE_RANGE       0x846D
    typedef void (APIENTRYP PFNGLDRAWRANGEELEMENTSPROC) (GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const void *indices);
    typedef void (APIENTRYP PFNGLTEXIMAGE3DPROC) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const void *pixels);
    typedef void (APIENTRYP PFNGLTEXSUBIMAGE3DPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const void *pixels);
    typedef void (APIENTRYP PFNGLCOPYTEXSUBIMAGE3DPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
    #ifdef GL_GLEXT_PROTOTYPES
    GLAPI void APIENTRY glDrawRangeElements (GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const void *indices);
    GLAPI void APIENTRY glTexImage3D (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const void *pixels);
    GLAPI void APIENTRY glTexSubImage3D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const void *pixels);
    GLAPI void APIENTRY glCopyTexSubImage3D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
    #endif
    #endif /* GL_VERSION_1_2 */
    
    #ifndef GL_VERSION_1_3
    #define GL_VERSION_1_3 1
    #define GL_TEXTURE0                       0x84C0
    #define GL_TEXTURE1                       0x84C1
    #define GL_TEXTURE2                       0x84C2
    #define GL_TEXTURE3                       0x84C3
    #define GL_TEXTURE4                       0x84C4
    #define GL_TEXTURE5                       0x84C5
    #define GL_TEXTURE6                       0x84C6
    #define GL_TEXTURE7                       0x84C7
    #define GL_TEXTURE8                       0x84C8
    #define GL_TEXTURE9                       0x84C9
    #define GL_TEXTURE10                      0x84CA
    #define GL_TEXTURE11                      0x84CB
    #define GL_TEXTURE12                      0x84CC
    #define GL_TEXTURE13                      0x84CD
    #define GL_TEXTURE14                      0x84CE
    #define GL_TEXTURE15                      0x84CF
    #define GL_TEXTURE16                      0x84D0
    #define GL_TEXTURE17                      0x84D1
    #define GL_TEXTURE18                      0x84D2
    #define GL_TEXTURE19                      0x84D3
    #define GL_TEXTURE20                      0x84D4
    #define GL_TEXTURE21                      0x84D5
    #define GL_TEXTURE22                      0x84D6
    #define GL_TEXTURE23                      0x84D7
    #define GL_TEXTURE24                      0x84D8
    #define GL_TEXTURE25                      0x84D9
    #define GL_TEXTURE26                      0x84DA
    #define GL_TEXTURE27                      0x84DB
    #define GL_TEXTURE28                      0x84DC
    #define GL_TEXTURE29                      0x84DD
    #define GL_TEXTURE30                      0x84DE
    #define GL_TEXTURE31                      0x84DF
    #define GL_ACTIVE_TEXTURE                 0x84E0
    #define GL_MULTISAMPLE                    0x809D
    #define GL_SAMPLE_ALPHA_TO_COVERAGE       0x809E
    #define GL_SAMPLE_ALPHA_TO_ONE            0x809F
    #define GL_SAMPLE_COVERAGE                0x80A0
    #define GL_SAMPLE_BUFFERS                 0x80A8
    #define GL_SAMPLES                        0x80A9
    #define GL_SAMPLE_COVERAGE_VALUE          0x80AA
    #define GL_SAMPLE_COVERAGE_INVERT         0x80AB
    #define GL_TEXTURE_CUBE_MAP               0x8513
    #define GL_TEXTURE_BINDING_CUBE_MAP       0x8514
    #define GL_TEXTURE_CUBE_MAP_POSITIVE_X    0x8515
    #define GL_TEXTURE_CUBE_MAP_NEGATIVE_X    0x8516
    #define GL_TEXTURE_CUBE_MAP_POSITIVE_Y    0x8517
    #define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y    0x8518
    #define GL_TEXTURE_CUBE_MAP_POSITIVE_Z    0x8519
    #define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z    0x851A
    #define GL_PROXY_TEXTURE_CUBE_MAP         0x851B
    #define GL_MAX_CUBE_MAP_TEXTURE_SIZE      0x851C
    #define GL_COMPRESSED_RGB                 0x84ED
    #define GL_COMPRESSED_RGBA                0x84EE
    #define GL_TEXTURE_COMPRESSION_HINT       0x84EF
    #define GL_TEXTURE_COMPRESSED_IMAGE_SIZE  0x86A0
    #define GL_TEXTURE_COMPRESSED             0x86A1
    #define GL_NUM_COMPRESSED_TEXTURE_FORMATS 0x86A2
    #define GL_COMPRESSED_TEXTURE_FORMATS     0x86A3
    #define GL_CLAMP_TO_BORDER                0x812D
    #define GL_CLIENT_ACTIVE_TEXTURE          0x84E1
    #define GL_MAX_TEXTURE_UNITS              0x84E2
    #define GL_TRANSPOSE_MODELVIEW_MATRIX     0x84E3
    #define GL_TRANSPOSE_PROJECTION_MATRIX    0x84E4
    #define GL_TRANSPOSE_TEXTURE_MATRIX       0x84E5
    #define GL_TRANSPOSE_COLOR_MATRIX         0x84E6
    #define GL_MULTISAMPLE_BIT                0x20000000
    #define GL_NORMAL_MAP                     0x8511
    #define GL_REFLECTION_MAP                 0x8512
    #define GL_COMPRESSED_ALPHA               0x84E9
    #define GL_COMPRESSED_LUMINANCE           0x84EA
    #define GL_COMPRESSED_LUMINANCE_ALPHA     0x84EB
    #define GL_COMPRESSED_INTENSITY           0x84EC
    #define GL_COMBINE                        0x8570
    #define GL_COMBINE_RGB                    0x8571
    #define GL_COMBINE_ALPHA                  0x8572
    #define GL_SOURCE0_RGB                    0x8580
    #define GL_SOURCE1_RGB                    0x8581
    #define GL_SOURCE2_RGB                    0x8582
    #define GL_SOURCE0_ALPHA                  0x8588
    #define GL_SOURCE1_ALPHA                  0x8589
    #define GL_SOURCE2_ALPHA                  0x858A
    #define GL_OPERAND0_RGB                   0x8590
    #define GL_OPERAND1_RGB                   0x8591
    #define GL_OPERAND2_RGB                   0x8592
    #define GL_OPERAND0_ALPHA                 0x8598
    #define GL_OPERAND1_ALPHA                 0x8599
    #define GL_OPERAND2_ALPHA                 0x859A
    #define GL_RGB_SCALE                      0x8573
    #define GL_ADD_SIGNED                     0x8574
    #define GL_INTERPOLATE                    0x8575
    #define GL_SUBTRACT                       0x84E7
    #define GL_CONSTANT                       0x8576
    #define GL_PRIMARY_COLOR                  0x8577
    #define GL_PREVIOUS                       0x8578
    #define GL_DOT3_RGB                       0x86AE
    #define GL_DOT3_RGBA                      0x86AF
    typedef void (APIENTRYP PFNGLACTIVETEXTUREPROC) (GLenum texture);
    typedef void (APIENTRYP PFNGLSAMPLECOVERAGEPROC) (GLfloat value, GLboolean invert);
    typedef void (APIENTRYP PFNGLCOMPRESSEDTEXIMAGE3DPROC) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const void *data);
    typedef void (APIENTRYP PFNGLCOMPRESSEDTEXIMAGE2DPROC) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void *data);
    typedef void (APIENTRYP PFNGLCOMPRESSEDTEXIMAGE1DPROC) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLint border, GLsizei imageSize, const void *data);
    typedef void (APIENTRYP PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const void *data);
    typedef void (APIENTRYP PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *data);
    typedef void (APIENTRYP PFNGLCOMPRESSEDTEXSUBIMAGE1DPROC) (GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLsizei imageSize, const void *data);
    typedef void (APIENTRYP PFNGLGETCOMPRESSEDTEXIMAGEPROC) (GLenum target, GLint level, void *img);
    typedef void (APIENTRYP PFNGLCLIENTACTIVETEXTUREPROC) (GLenum texture);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD1DPROC) (GLenum target, GLdouble s);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD1DVPROC) (GLenum target, const GLdouble *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD1FPROC) (GLenum target, GLfloat s);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD1FVPROC) (GLenum target, const GLfloat *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD1IPROC) (GLenum target, GLint s);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD1IVPROC) (GLenum target, const GLint *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD1SPROC) (GLenum target, GLshort s);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD1SVPROC) (GLenum target, const GLshort *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD2DPROC) (GLenum target, GLdouble s, GLdouble t);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD2DVPROC) (GLenum target, const GLdouble *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD2FPROC) (GLenum target, GLfloat s, GLfloat t);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD2FVPROC) (GLenum target, const GLfloat *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD2IPROC) (GLenum target, GLint s, GLint t);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD2IVPROC) (GLenum target, const GLint *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD2SPROC) (GLenum target, GLshort s, GLshort t);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD2SVPROC) (GLenum target, const GLshort *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD3DPROC) (GLenum target, GLdouble s, GLdouble t, GLdouble r);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD3DVPROC) (GLenum target, const GLdouble *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD3FPROC) (GLenum target, GLfloat s, GLfloat t, GLfloat r);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD3FVPROC) (GLenum target, const GLfloat *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD3IPROC) (GLenum target, GLint s, GLint t, GLint r);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD3IVPROC) (GLenum target, const GLint *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD3SPROC) (GLenum target, GLshort s, GLshort t, GLshort r);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD3SVPROC) (GLenum target, const GLshort *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD4DPROC) (GLenum target, GLdouble s, GLdouble t, GLdouble r, GLdouble q);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD4DVPROC) (GLenum target, const GLdouble *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD4FPROC) (GLenum target, GLfloat s, GLfloat t, GLfloat r, GLfloat q);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD4FVPROC) (GLenum target, const GLfloat *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD4IPROC) (GLenum target, GLint s, GLint t, GLint r, GLint q);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD4IVPROC) (GLenum target, const GLint *v);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD4SPROC) (GLenum target, GLshort s, GLshort t, GLshort r, GLshort q);
    typedef void (APIENTRYP PFNGLMULTITEXCOORD4SVPROC) (GLenum target, const GLshort *v);
    typedef void (APIENTRYP PFNGLLOADTRANSPOSEMATRIXFPROC) (const GLfloat *m);
    typedef void (APIENTRYP PFNGLLOADTRANSPOSEMATRIXDPROC) (const GLdouble *m);
    typedef void (APIENTRYP PFNGLMULTTRANSPOSEMATRIXFPROC) (const GLfloat *m);
    typedef void (APIENTRYP PFNGLMULTTRANSPOSEMATRIXDPROC) (const GLdouble *m);
    #ifdef GL_GLEXT_PROTOTYPES
    GLAPI void APIENTRY glActiveTexture (GLenum texture);
    GLAPI void APIENTRY glSampleCoverage (GLfloat value, GLboolean invert);
    GLAPI void APIENTRY glCompressedTexImage3D (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const void *data);
    GLAPI void APIENTRY glCompressedTexImage2D (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void *data);
    GLAPI void APIENTRY glCompressedTexImage1D (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLint border, GLsizei imageSize, const void *data);
    GLAPI void APIENTRY glCompressedTexSubImage3D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const void *data);
    GLAPI void APIENTRY glCompressedTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *data);
    GLAPI void APIENTRY glCompressedTexSubImage1D (GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLsizei imageSize, const void *data);
    GLAPI void APIENTRY glGetCompressedTexImage (GLenum target, GLint level, void *img);
    GLAPI void APIENTRY glClientActiveTexture (GLenum texture);
    GLAPI void APIENTRY glMultiTexCoord1d (GLenum target, GLdouble s);
    GLAPI void APIENTRY glMultiTexCoord1dv (GLenum target, const GLdouble *v);
    GLAPI void APIENTRY glMultiTexCoord1f (GLenum target, GLfloat s);
    GLAPI void APIENTRY glMultiTexCoord1fv (GLenum target, const GLfloat *v);
    GLAPI void APIENTRY glMultiTexCoord1i (GLenum target, GLint s);
    GLAPI void APIENTRY glMultiTexCoord1iv (GLenum target, const GLint *v);
    GLAPI void APIENTRY glMultiTexCoord1s (GLenum target, GLshort s);
    GLAPI void APIENTRY glMultiTexCoord1sv (GLenum target, const GLshort *v);
    GLAPI void APIENTRY glMultiTexCoord2d (GLenum target, GLdouble s, GLdouble t);
    GLAPI void APIENTRY glMultiTexCoord2dv (GLenum target, const GLdouble *v);
    GLAPI void APIENTRY glMultiTexCoord2f (GLenum target, GLfloat s, GLfloat t);
    GLAPI void APIENTRY glMultiTexCoord2fv (GLenum target, const GLfloat *v);
    GLAPI void APIENTRY glMultiTexCoord2i (GLenum target, GLint s, GLint t);
    GLAPI void APIENTRY glMultiTexCoord2iv (GLenum target, const GLint *v);
    GLAPI void APIENTRY glMultiTexCoord2s (GLenum target, GLshort s, GLshort t);
    GLAPI void APIENTRY glMultiTexCoord2sv (GLenum target, const GLshort *v);
    GLAPI void APIENTRY glMultiTexCoord3d (GLenum target, GLdouble s, GLdouble t, GLdouble r);
    GLAPI void APIENTRY glMultiTexCoord3dv (GLenum target, const GLdouble *v);
    GLAPI void APIENTRY glMultiTexCoord3f (GLenum target, GLfloat s, GLfloat t, GLfloat r);
    GLAPI void APIENTRY glMultiTexCoord3fv (GLenum target, const GLfloat *v);
    GLAPI void APIENTRY glMultiTexCoord3i (GLenum target, GLint s, GLint t, GLint r);
    GLAPI void APIENTRY glMultiTexCoord3iv (GLenum target, const GLint *v);
    GLAPI void APIENTRY glMultiTexCoord3s (GLenum target, GLshort s, GLshort t, GLshort r);
    GLAPI void APIENTRY glMultiTexCoord3sv (GLenum target, const GLshort *v);
    GLAPI void APIENTRY glMultiTexCoord4d (GLenum target, GLdouble s, GLdouble t, GLdouble r, GLdouble q);
    GLAPI void APIENTRY glMultiTexCoord4dv (GLenum target, const GLdouble *v);
    GLAPI void APIENTRY glMultiTexCoord4f (GLenum target, GLfloat s, GLfloat t, GLfloat r, GLfloat q);
    GLAPI void APIENTRY glMultiTexCoord4fv (GLenum target, const GLfloat *v);
    GLAPI void APIENTRY glMultiTexCoord4i (GLenum target, GLint s, GLint t, GLint r, GLint q);
    GLAPI void APIENTRY glMultiTexCoord4iv (GLenum target, const GLint *v);
    GLAPI void APIENTRY glMultiTexCoord4s (GLenum target, GLshort s, GLshort t, GLshort r, GLshort q);
    GLAPI void APIENTRY glMultiTexCoord4sv (GLenum target, const GLshort *v);
    GLAPI void APIENTRY glLoadTransposeMatrixf (const GLfloat *m);
    GLAPI void APIENTRY glLoadTransposeMatrixd (const GLdouble *m);
    GLAPI void APIENTRY glMultTransposeMatrixf (const GLfloat *m);
    GLAPI void APIENTRY glMultTransposeMatrixd (const GLdouble *m);
    #endif
    #endif /* GL_VERSION_1_3 */
    
    #ifndef GL_VERSION_1_4
    #define GL_VERSION_1_4 1
    #define GL_BLEND_DST_RGB                  0x80C8
    #define GL_BLEND_SRC_RGB                  0x80C9
    #define GL_BLEND_DST_ALPHA                0x80CA
    #define GL_BLEND_SRC_ALPHA                0x80CB
    #define GL_POINT_FADE_THRESHOLD_SIZE      0x8128
    #define GL_DEPTH_COMPONENT16              0x81A5
    #define GL_DEPTH_COMPONENT24              0x81A6
    #define GL_DEPTH_COMPONENT32              0x81A7
    #define GL_MIRRORED_REPEAT                0x8370
    #define GL_MAX_TEXTURE_LOD_BIAS           0x84FD
    #define GL_TEXTURE_LOD_BIAS               0x8501
    #define GL_INCR_WRAP                      0x8507
    #define GL_DECR_WRAP                      0x8508
    #define GL_TEXTURE_DEPTH_SIZE             0x884A
    #define GL_TEXTURE_COMPARE_MODE           0x884C
    #define GL_TEXTURE_COMPARE_FUNC           0x884D
    #define GL_POINT_SIZE_MIN                 0x8126
    #define GL_POINT_SIZE_MAX                 0x8127
    #define GL_POINT_DISTANCE_ATTENUATION     0x8129
    #define GL_GENERATE_MIPMAP                0x8191
    #define GL_GENERATE_MIPMAP_HINT           0x8192
    #define GL_FOG_COORDINATE_SOURCE          0x8450
    #define GL_FOG_COORDINATE                 0x8451
    #define GL_FRAGMENT_DEPTH                 0x8452
    #define GL_CURRENT_FOG_COORDINATE         0x8453
    #define GL_FOG_COORDINATE_ARRAY_TYPE      0x8454
    #define GL_FOG_COORDINATE_ARRAY_STRIDE    0x8455
    #define GL_FOG_COORDINATE_ARRAY_POINTER   0x8456
    #define GL_FOG_COORDINATE_ARRAY           0x8457
    #define GL_COLOR_SUM                      0x8458
    #define GL_CURRENT_SECONDARY_COLOR        0x8459
    #define GL_SECONDARY_COLOR_ARRAY_SIZE     0x845A
    #define GL_SECONDARY_COLOR_ARRAY_TYPE     0x845B
    #define GL_SECONDARY_COLOR_ARRAY_STRIDE   0x845C
    #define GL_SECONDARY_COLOR_ARRAY_POINTER  0x845D
    #define GL_SECONDARY_COLOR_ARRAY          0x845E
    #define GL_TEXTURE_FILTER_CONTROL         0x8500
    #define GL_DEPTH_TEXTURE_MODE             0x884B
    #define GL_COMPARE_R_TO_TEXTURE           0x884E
    #define GL_FUNC_ADD                       0x8006
    #define GL_FUNC_SUBTRACT                  0x800A
    #define GL_FUNC_REVERSE_SUBTRACT          0x800B
    #define GL_MIN                            0x8007
    #define GL_MAX                            0x8008
    #define GL_CONSTANT_COLOR                 0x8001
    #define GL_ONE_MINUS_CONSTANT_COLOR       0x8002
    #define GL_CONSTANT_ALPHA                 0x8003
    #define GL_ONE_MINUS_CONSTANT_ALPHA       0x8004
    typedef void (APIENTRYP PFNGLBLENDFUNCSEPARATEPROC) (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
    typedef void (APIENTRYP PFNGLMULTIDRAWARRAYSPROC) (GLenum mode, const GLint *first, const GLsizei *count, GLsizei drawcount);
    typedef void (APIENTRYP PFNGLMULTIDRAWELEMENTSPROC) (GLenum mode, const GLsizei *count, GLenum type, const void *const*indices, GLsizei drawcount);
    typedef void (APIENTRYP PFNGLPOINTPARAMETERFPROC) (GLenum pname, GLfloat param);
    typedef void (APIENTRYP PFNGLPOINTPARAMETERFVPROC) (GLenum pname, const GLfloat *params);
    typedef void (APIENTRYP PFNGLPOINTPARAMETERIPROC) (GLenum pname, GLint param);
    typedef void (APIENTRYP PFNGLPOINTPARAMETERIVPROC) (GLenum pname, const GLint *params);
    typedef void (APIENTRYP PFNGLFOGCOORDFPROC) (GLfloat coord);
    typedef void (APIENTRYP PFNGLFOGCOORDFVPROC) (const GLfloat *coord);
    typedef void (APIENTRYP PFNGLFOGCOORDDPROC) (GLdouble coord);
    typedef void (APIENTRYP PFNGLFOGCOORDDVPROC) (const GLdouble *coord);
    typedef void (APIENTRYP PFNGLFOGCOORDPOINTERPROC) (GLenum type, GLsizei stride, const void *pointer);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3BPROC) (GLbyte red, GLbyte green, GLbyte blue);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3BVPROC) (const GLbyte *v);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3DPROC) (GLdouble red, GLdouble green, GLdouble blue);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3DVPROC) (const GLdouble *v);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3FPROC) (GLfloat red, GLfloat green, GLfloat blue);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3FVPROC) (const GLfloat *v);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3IPROC) (GLint red, GLint green, GLint blue);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3IVPROC) (const GLint *v);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3SPROC) (GLshort red, GLshort green, GLshort blue);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3SVPROC) (const GLshort *v);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3UBPROC) (GLubyte red, GLubyte green, GLubyte blue);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3UBVPROC) (const GLubyte *v);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3UIPROC) (GLuint red, GLuint green, GLuint blue);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3UIVPROC) (const GLuint *v);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3USPROC) (GLushort red, GLushort green, GLushort blue);
    typedef void (APIENTRYP PFNGLSECONDARYCOLOR3USVPROC) (const GLushort *v);
    typedef void (APIENTRYP PFNGLSECONDARYCOLORPOINTERPROC) (GLint size, GLenum type, GLsizei stride, const void *pointer);
    typedef void (APIENTRYP PFNGLWINDOWPOS2DPROC) (GLdouble x, GLdouble y);
    typedef void (APIENTRYP PFNGLWINDOWPOS2DVPROC) (const GLdouble *v);
    typedef void (APIENTRYP PFNGLWINDOWPOS2FPROC) (GLfloat x, GLfloat y);
    typedef void (APIENTRYP PFNGLWINDOWPOS2FVPROC) (const GLfloat *v);
    typedef void (APIENTRYP PFNGLWINDOWPOS2IPROC) (GLint x, GLint y);
    typedef void (APIENTRYP PFNGLWINDOWPOS2IVPROC) (const GLint *v);
    typedef void (APIENTRYP PFNGLWINDOWPOS2SPROC) (GLshort x, GLshort y);
    typedef void (APIENTRYP PFNGLWINDOWPOS2SVPROC) (const GLshort *v);
    typedef void (APIENTRYP PFNGLWINDOWPOS3DPROC) (GLdouble x, GLdouble y, GLdouble z);
    typedef void (APIENTRYP PFNGLWINDOWPOS3DVPROC) (const GLdouble *v);
    typedef void (APIENTRYP PFNGLWINDOWPOS3FPROC) (GLfloat x, GLfloat y, GLfloat z);
    typedef void (APIENTRYP PFNGLWINDOWPOS3FVPROC) (const GLfloat *v);
    typedef void (APIENTRYP PFNGLWINDOWPOS3IPROC) (GLint x, GLint y, GLint z);
    typedef void (APIENTRYP PFNGLWINDOWPOS3IVPROC) (const GLint *v);
    typedef void (APIENTRYP PFNGLWINDOWPOS3SPROC) (GLshort x, GLshort y, GLshort z);
    typedef void (APIENTRYP PFNGLWINDOWPOS3SVPROC) (const GLshort *v);
    typedef void (APIENTRYP PFNGLBLENDCOLORPROC) (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
    typedef void (APIENTRYP PFNGLBLENDEQUATIONPROC) (GLenum mode);
    #ifdef GL_GLEXT_PROTOTYPES
    GLAPI void APIENTRY glBlendFuncSeparate (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
    GLAPI void APIENTRY glMultiDrawArrays (GLenum mode, const GLint *first, const GLsizei *count, GLsizei drawcount);
    GLAPI void APIENTRY glMultiDrawElements (GLenum mode, const GLsizei *count, GLenum type, const void *const*indices, GLsizei drawcount);
    GLAPI void APIENTRY glPointParameterf (GLenum pname, GLfloat param);
    GLAPI void APIENTRY glPointParameterfv (GLenum pname, const GLfloat *params);
    GLAPI void APIENTRY glPointParameteri (GLenum pname, GLint param);
    GLAPI void APIENTRY glPointParameteriv (GLenum pname, const GLint *params);
    GLAPI void APIENTRY glFogCoordf (GLfloat coord);
    GLAPI void APIENTRY glFogCoordfv (const GLfloat *coord);
    GLAPI void APIENTRY glFogCoordd (GLdouble coord);
    GLAPI void APIENTRY glFogCoorddv (const GLdouble *coord);
    GLAPI void APIENTRY glFogCoordPointer (GLenum type, GLsizei stride, const void *pointer);
    GLAPI void APIENTRY glSecondaryColor3b (GLbyte red, GLbyte green, GLbyte blue);
    GLAPI void APIENTRY glSecondaryColor3bv (const GLbyte *v);
    GLAPI void APIENTRY glSecondaryColor3d (GLdouble red, GLdouble green, GLdouble blue);
    GLAPI void APIENTRY glSecondaryColor3dv (const GLdouble *v);
    GLAPI void APIENTRY glSecondaryColor3f (GLfloat red, GLfloat green, GLfloat blue);
    GLAPI void APIENTRY glSecondaryColor3fv (const GLfloat *v);
    GLAPI void APIENTRY glSecondaryColor3i (GLint red, GLint green, GLint blue);
    GLAPI void APIENTRY glSecondaryColor3iv (const GLint *v);
    GLAPI void APIENTRY glSecondaryColor3s (GLshort red, GLshort green, GLshort blue);
    GLAPI void APIENTRY glSecondaryColor3sv (const GLshort *v);
    GLAPI void APIENTRY glSecondaryColor3ub (GLubyte red, GLubyte green, GLubyte blue);
    GLAPI void APIENTRY glSecondaryColor3ubv (const GLubyte *v);
    GLAPI void APIENTRY glSecondaryColor3ui (GLuint red, GLuint green, GLuint blue);
    GLAPI void APIENTRY glSecondaryColor3uiv (const GLuint *v);
    GLAPI void APIENTRY glSecondaryColor3us (GLushort red, GLushort green, GLushort blue);
    GLAPI void APIENTRY glSecondaryColor3usv (const GLushort *v);
    GLAPI void APIENTRY glSecondaryColorPointer (GLint size, GLenum type, GLsizei stride, const void *pointer);
    GLAPI void APIENTRY glWindowPos2d (GLdouble x, GLdouble y);
    GLAPI void APIENTRY glWindowPos2dv (const GLdouble *v);
    GLAPI void APIENTRY glWindowPos2f (GLfloat x, GLfloat y);
    GLAPI void APIENTRY glWindowPos2fv (const GLfloat *v);
    GLAPI void APIENTRY glWindowPos2i (GLint x, GLint y);
    GLAPI void APIENTRY glWindowPos2iv (const GLint *v);
    GLAPI void APIENTRY glWindowPos2s (GLshort x, GLshort y);
    GLAPI void APIENTRY glWindowPos2sv (const GLshort *v);
    GLAPI void APIENTRY glWindowPos3d (GLdouble x, GLdouble y, GLdouble z);
    GLAPI void APIENTRY glWindowPos3dv (const GLdouble *v);
    GLAPI void APIENTRY glWindowPos3f (GLfloat x, GLfloat y, GLfloat z);
    GLAPI void APIENTRY glWindowPos3fv (const GLfloat *v);
    GLAPI void APIENTRY glWindowPos3i (GLint x, GLint y, GLint z);
    GLAPI void APIENTRY glWindowPos3iv (const GLint *v);
    GLAPI void APIENTRY glWindowPos3s (GLshort x, GLshort y, GLshort z);
    GLAPI void APIENTRY glWindowPos3sv (const GLshort *v);
    GLAPI void APIENTRY glBlendColor (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
    GLAPI void APIENTRY glBlendEquation (GLenum mode);
    #endif
    #endif /* GL_VERSION_1_4 */
    
    #ifndef GL_VERSION_1_5
    #define GL_VERSION_1_5 1
    #include <stddef.h>
    typedef ptrdiff_t GLsizeiptr;
    typedef ptrdiff_t GLintptr;
    #define GL_BUFFER_SIZE                    0x8764
    #define GL_BUFFER_USAGE                   0x8765
    #define GL_QUERY_COUNTER_BITS             0x8864
    #define GL_CURRENT_QUERY                  0x8865
    #define GL_QUERY_RESULT                   0x8866
    #define GL_QUERY_RESULT_AVAILABLE         0x8867
    #define GL_ARRAY_BUFFER                   0x8892
    #define GL_ELEMENT_ARRAY_BUFFER           0x8893
    #define GL_ARRAY_BUFFER_BINDING           0x8894
    #define GL_ELEMENT_ARRAY_BUFFER_BINDING   0x8895
    #define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING 0x889F
    #define GL_READ_ONLY                      0x88B8
    #define GL_WRITE_ONLY                     0x88B9
    #define GL_READ_WRITE                     0x88BA
    #define GL_BUFFER_ACCESS                  0x88BB
    #define GL_BUFFER_MAPPED                  0x88BC
    #define GL_BUFFER_MAP_POINTER             0x88BD
    #define GL_STREAM_DRAW                    0x88E0
    #define GL_STREAM_READ                    0x88E1
    #define GL_STREAM_COPY                    0x88E2
    #define GL_STATIC_DRAW                    0x88E4
    #define GL_STATIC_READ                    0x88E5
    #define GL_STATIC_COPY                    0x88E6
    #define GL_DYNAMIC_DRAW                   0x88E8
    #define GL_DYNAMIC_READ                   0x88E9
    #define GL_DYNAMIC_COPY                   0x88EA
    #define GL_SAMPLES_PASSED                 0x8914
    #define GL_SRC1_ALPHA                     0x8589
    #define GL_VERTEX_ARRAY_BUFFER_BINDING    0x8896
    #define GL_NORMAL_ARRAY_BUFFER_BINDING    0x8897
    #define GL_COLOR_ARRAY_BUFFER_BINDING     0x8898
    #define GL_INDEX_ARRAY_BUFFER_BINDING     0x8899
    #define GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING 0x889A
    #define GL_EDGE_FLAG_ARRAY_BUFFER_BINDING 0x889B
    #define GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING 0x889C
    #define GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING 0x889D
    #define GL_WEIGHT_ARRAY_BUFFER_BINDING    0x889E
    #define GL_FOG_COORD_SRC                  0x8450
    #define GL_FOG_COORD                      0x8451
    #define GL_CURRENT_FOG_COORD              0x8453
    #define GL_FOG_COORD_ARRAY_TYPE           0x8454
    #define GL_FOG_COORD_ARRAY_STRIDE         0x8455
    #define GL_FOG_COORD_ARRAY_POINTER        0x8456
    #define GL_FOG_COORD_ARRAY                0x8457
    #define GL_FOG_COORD_ARRAY_BUFFER_BINDING 0x889D
    #define GL_SRC0_RGB                       0x8580
    #define GL_SRC1_RGB                       0x8581
    #define GL_SRC2_RGB                       0x8582
    #define GL_SRC0_ALPHA                     0x8588
    #define GL_SRC2_ALPHA                     0x858A
    typedef void (APIENTRYP PFNGLGENQUERIESPROC) (GLsizei n, GLuint *ids);
    typedef void (APIENTRYP PFNGLDELETEQUERIESPROC) (GLsizei n, const GLuint *ids);
    typedef GLboolean (APIENTRYP PFNGLISQUERYPROC) (GLuint id);
    typedef void (APIENTRYP PFNGLBEGINQUERYPROC) (GLenum target, GLuint id);
    typedef void (APIENTRYP PFNGLENDQUERYPROC) (GLenum target);
    typedef void (APIENTRYP PFNGLGETQUERYIVPROC) (GLenum target, GLenum pname, GLint *params);
    typedef void (APIENTRYP PFNGLGETQUERYOBJECTIVPROC) (GLuint id, GLenum pname, GLint *params);
    typedef void (APIENTRYP PFNGLGETQUERYOBJECTUIVPROC) (GLuint id, GLenum pname, GLuint *params);
    typedef void (APIENTRYP PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer);
    typedef void (APIENTRYP PFNGLDELETEBUFFERSPROC) (GLsizei n, const GLuint *buffers);
    typedef void (APIENTRYP PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers);
    typedef GLboolean (APIENTRYP PFNGLISBUFFERPROC) (GLuint buffer);
    typedef void (APIENTRYP PFNGLBUFFERDATAPROC) (GLenum target, GLsizeiptr size, const void *data, GLenum usage);
    typedef void (APIENTRYP PFNGLBUFFERSUBDATAPROC) (GLenum target, GLintptr offset, GLsizeiptr size, const void *data);
    typedef void (APIENTRYP PFNGLGETBUFFERSUBDATAPROC) (GLenum target, GLintptr offset, GLsizeiptr size, void *data);
    typedef void *(APIENTRYP PFNGLMAPBUFFERPROC) (GLenum target, GLenum access);
    typedef GLboolean (APIENTRYP PFNGLUNMAPBUFFERPROC) (GLenum target);
    typedef void (APIENTRYP PFNGLGETBUFFERPARAMETERIVPROC) (GLenum target, GLenum pname, GLint *params);
    typedef void (APIENTRYP PFNGLGETBUFFERPOINTERVPROC) (GLenum target, GLenum pname, void **params);
    #ifdef GL_GLEXT_PROTOTYPES
    GLAPI void APIENTRY glGenQueries (GLsizei n, GLuint *ids);
    GLAPI void APIENTRY glDeleteQueries (GLsizei n, const GLuint *ids);
    GLAPI GLboolean APIENTRY glIsQuery (GLuint id);
    GLAPI void APIENTRY glBeginQuery (GLenum target, GLuint id);
    GLAPI void APIENTRY glEndQuery (GLenum target);
    GLAPI void APIENTRY glGetQueryiv (GLenum target, GLenum pname, GLint *params);
    GLAPI void APIENTRY glGetQueryObjectiv (GLuint id, GLenum pname, GLint *params);
    GLAPI void APIENTRY glGetQueryObjectuiv (GLuint id, GLenum pname, GLuint *params);
    GLAPI void APIENTRY glBindBuffer (GLenum target, GLuint buffer);
    GLAPI void APIENTRY glDeleteBuffers (GLsizei n, const GLuint *buffers);
    GLAPI void APIENTRY glGenBuffers (GLsizei n, GLuint *buffers);
    GLAPI GLboolean APIENTRY glIsBuffer (GLuint buffer);
    GLAPI void APIENTRY glBufferData (GLenum target, GLsizeiptr size, const void *data, GLenum usage);
    GLAPI void APIENTRY glBufferSubData (GLenum target, GLintptr offset, GLsizeiptr size, const void *data);
    GLAPI void APIENTRY glGetBufferSubData (GLenum target, GLintptr offset, GLsizeiptr size, void *data);
    GLAPI void *APIENTRY glMapBuffer (GLenum target, GLenum access);
    GLAPI GLboolean APIENTRY glUnmapBuffer (GLenum target);
    GLAPI void APIENTRY glGetBufferParameteriv (GLenum target, GLenum pname, GLint *params);
    GLAPI void APIENTRY glGetBufferPointerv (GLenum target, GLenum pname, void **params);
    #endif
    #endif /* GL_VERSION_1_5 */
    
    #ifndef GL_VERSION_2_0
    #define GL_VERSION_2_0 1
    typedef char GLchar;
    #define GL_BLEND_EQUATION_RGB             0x8009
    #define GL_VERTEX_ATTRIB_ARRAY_ENABLED    0x8622
    #define GL_VERTEX_ATTRIB_ARRAY_SIZE       0x8623
    #define GL_VERTEX_ATTRIB_ARRAY_STRIDE     0x8624
    #define GL_VERTEX_ATTRIB_ARRAY_TYPE       0x8625
    #define GL_CURRENT_VERTEX_ATTRIB          0x8626
    #define GL_VERTEX_PROGRAM_POINT_SIZE      0x8642
    #define GL_VERTEX_ATTRIB_ARRAY_POINTER    0x8645
    #define GL_STENCIL_BACK_FUNC              0x8800
    #define GL_STENCIL_BACK_FAIL              0x8801
    #define GL_STENCIL_BACK_PASS_DEPTH_FAIL   0x8802
    #define GL_STENCIL_BACK_PASS_DEPTH_PASS   0x8803
    #define GL_MAX_DRAW_BUFFERS               0x8824
    #define GL_DRAW_BUFFER0                   0x8825
    #define GL_DRAW_BUFFER1                   0x8826
    #define GL_DRAW_BUFFER2                   0x8827
    #define GL_DRAW_BUFFER3                   0x8828
    #define GL_DRAW_BUFFER4                   0x8829
    #define GL_DRAW_BUFFER5                   0x882A
    #define GL_DRAW_BUFFER6                   0x882B
    #define GL_DRAW_BUFFER7                   0x882C
    #define GL_DRAW_BUFFER8                   0x882D
    #define GL_DRAW_BUFFER9                   0x882E
    #define GL_DRAW_BUFFER10                  0x882F
    #define GL_DRAW_BUFFER11                  0x8830
    #define GL_DRAW_BUFFER12                  0x8831
    #define GL_DRAW_BUFFER13                  0x8832
    #define GL_DRAW_BUFFER14                  0x8833
    #define GL_DRAW_BUFFER15                  0x8834
    #define GL_BLEND_EQUATION_ALPHA           0x883D
    #define GL_MAX_VERTEX_ATTRIBS             0x8869
    #define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED 0x886A
    #define GL_MAX_TEXTURE_IMAGE_UNITS        0x8872
    #define GL_FRAGMENT_SHADER                0x8B30
    #define GL_VERTEX_SHADER                  0x8B31
    #define GL_MAX_FRAGMENT_UNIFORM_COMPONENTS 0x8B49
    #define GL_MAX_VERTEX_UNIFORM_COMPONENTS  0x8B4A
    #define GL_MAX_VARYING_FLOATS             0x8B4B
    #define GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS 0x8B4C
    #define GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS 0x8B4D
    #define GL_SHADER_TYPE                    0x8B4F
    #define GL_FLOAT_VEC2                     0x8B50
    #define GL_FLOAT_VEC3                     0x8B51
    #define GL_FLOAT_VEC4                     0x8B52
    #define GL_INT_VEC2                       0x8B53
    #define GL_INT_VEC3                       0x8B54
    #define GL_INT_VEC4                       0x8B55
    #define GL_BOOL                           0x8B56
    #define GL_BOOL_VEC2                      0x8B57
    #define GL_BOOL_VEC3                      0x8B58
    #define GL_BOOL_VEC4                      0x8B59
    #define GL_FLOAT_MAT2                     0x8B5A
    #define GL_FLOAT_MAT3                     0x8B5B
    #define GL_FLOAT_MAT4                     0x8B5C
    #define GL_SAMPLER_1D                     0x8B5D
    #define GL_SAMPLER_2D                     0x8B5E
    #define GL_SAMPLER_3D                     0x8B5F
    #define GL_SAMPLER_CUBE                   0x8B60
    #define GL_SAMPLER_1D_SHADOW              0x8B61
    #define GL_SAMPLER_2D_SHADOW              0x8B62
    #define GL_DELETE_STATUS                  0x8B80
    #define GL_COMPILE_STATUS                 0x8B81
    #define GL_LINK_STATUS                    0x8B82
    #define GL_VALIDATE_STATUS                0x8B83
    #define GL_INFO_LOG_LENGTH                0x8B84
    #define GL_ATTACHED_SHADERS               0x8B85
    #define GL_ACTIVE_UNIFORMS                0x8B86
    #define GL_ACTIVE_UNIFORM_MAX_LENGTH      0x8B87
    #define GL_SHADER_SOURCE_LENGTH           0x8B88
    #define GL_ACTIVE_ATTRIBUTES              0x8B89
    #define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH    0x8B8A
    #define GL_FRAGMENT_SHADER_DERIVATIVE_HINT 0x8B8B
    #define GL_SHADING_LANGUAGE_VERSION       0x8B8C
    #define GL_CURRENT_PROGRAM                0x8B8D
    #define GL_POINT_SPRITE_COORD_ORIGIN      0x8CA0
    #define GL_LOWER_LEFT                     0x8CA1
    #define GL_UPPER_LEFT                     0x8CA2
    #define GL_STENCIL_BACK_REF               0x8CA3
    #define GL_STENCIL_BACK_VALUE_MASK        0x8CA4
    #define GL_STENCIL_BACK_WRITEMASK         0x8CA5
    #define GL_VERTEX_PROGRAM_TWO_SIDE        0x8643
    #define GL_POINT_SPRITE                   0x8861
    #define GL_COORD_REPLACE                  0x8862
    #define GL_MAX_TEXTURE_COORDS             0x8871
    typedef void (APIENTRYP PFNGLBLENDEQUATIONSEPARATEPROC) (GLenum modeRGB, GLenum modeAlpha);
    typedef void (APIENTRYP PFNGLDRAWBUFFERSPROC) (GLsizei n, const GLenum *bufs);
    typedef void (APIENTRYP PFNGLSTENCILOPSEPARATEPROC) (GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass);
    typedef void (APIENTRYP PFNGLSTENCILFUNCSEPARATEPROC) (GLenum face, GLenum func, GLint ref, GLuint mask);
    typedef void (APIENTRYP PFNGLSTENCILMASKSEPARATEPROC) (GLenum face, GLuint mask);
    typedef void (APIENTRYP PFNGLATTACHSHADERPROC) (GLuint program, GLuint shader);
    typedef void (APIENTRYP PFNGLBINDATTRIBLOCATIONPROC) (GLuint program, GLuint index, const GLchar *name);
    typedef void (APIENTRYP PFNGLCOMPILESHADERPROC) (GLuint shader);
    typedef GLuint (APIENTRYP PFNGLCREATEPROGRAMPROC) (void);
    typedef GLuint (APIENTRYP PFNGLCREATESHADERPROC) (GLenum type);
    typedef void (APIENTRYP PFNGLDELETEPROGRAMPROC) (GLuint program);
    typedef void (APIENTRYP PFNGLDELETESHADERPROC) (GLuint shader);
    typedef void (APIENTRYP PFNGLDETACHSHADERPROC) (GLuint program, GLuint shader);
    typedef void (APIENTRYP PFNGLDISABLEVERTEXATTRIBARRAYPROC) (GLuint index);
    typedef void (APIENTRYP PFNGLENABLEVERTEXATTRIBARRAYPROC) (GLuint index);
    typedef void (APIENTRYP PFNGLGETACTIVEATTRIBPROC) (GLuint program, GLuint index, GLsizei bufSize, GLsizei *length, GLint *size, GLenum *type, GLchar *name);
    typedef void (APIENTRYP PFNGLGETACTIVEUNIFORMPROC) (GLuint program, GLuint index, GLsizei bufSize, GLsizei *length, GLint *size, GLenum *type, GLchar *name);
    typedef void (APIENTRYP PFNGLGETATTACHEDSHADERSPROC) (GLuint program, GLsizei maxCount, GLsizei *count, GLuint *shaders);
    typedef GLint (APIENTRYP PFNGLGETATTRIBLOCATIONPROC) (GLuint program, const GLchar *name);
    typedef void (APIENTRYP PFNGLGETPROGRAMIVPROC) (GLuint program, GLenum pname, GLint *params);
    typedef void (APIENTRYP PFNGLGETPROGRAMINFOLOGPROC) (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
    typedef void (APIENTRYP PFNGLGETSHADERIVPROC) (GLuint shader, GLenum pname, GLint *params);
    typedef void (APIENTRYP PFNGLGETSHADERINFOLOGPROC) (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
    typedef void (APIENTRYP PFNGLGETSHADERSOURCEPROC) (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *source);
    typedef GLint (APIENTRYP PFNGLGETUNIFORMLOCATIONPROC) (GLuint program, const GLchar *name);
    typedef void (APIENTRYP PFNGLGETUNIFORMFVPROC) (GLuint program, GLint location, GLfloat *params);
    typedef void (APIENTRYP PFNGLGETUNIFORMIVPROC) (GLuint program, GLint location, GLint *params);
    typedef void (APIENTRYP PFNGLGETVERTEXATTRIBDVPROC) (GLuint index, GLenum pname, GLdouble *params);
    typedef void (APIENTRYP PFNGLGETVERTEXATTRIBFVPROC) (GLuint index, GLenum pname, GLfloat *params);
    typedef void (APIENTRYP PFNGLGETVERTEXATTRIBIVPROC) (GLuint index, GLenum pname, GLint *params);
    typedef void (APIENTRYP PFNGLGETVERTEXATTRIBPOINTERVPROC) (GLuint index, GLenum pname, void **pointer);
    typedef GLboolean (APIENTRYP PFNGLISPROGRAMPROC) (GLuint program);
    typedef GLboolean (APIENTRYP PFNGLISSHADERPROC) (GLuint shader);
    typedef void (APIENTRYP PFNGLLINKPROGRAMPROC) (GLuint program);
    typedef void (APIENTRYP PFNGLSHADERSOURCEPROC) (GLuint shader, GLsizei count, const GLchar *const*string, const GLint *length);
    typedef void (APIENTRYP PFNGLUSEPROGRAMPROC) (GLuint program);
    typedef void (APIENTRYP PFNGLUNIFORM1FPROC) (GLint location, GLfloat v0);
    typedef void (APIENTRYP PFNGLUNIFORM2FPROC) (GLint location, GLfloat v0, GLfloat v1);
    typedef void (APIENTRYP PFNGLUNIFORM3FPROC) (GLint location, GLfloat v0, GLfloat v1, GLfloat v2);
    typedef void (APIENTRYP PFNGLUNIFORM4FPROC) (GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
    typedef void (APIENTRYP PFNGLUNIFORM1IPROC) (GLint location, GLint v0);
    typedef void (APIENTRYP PFNGLUNIFORM2IPROC) (GLint location, GLint v0, GLint v1);
    typedef void (APIENTRYP PFNGLUNIFORM3IPROC) (GLint location, GLint v0, GLint v1, GLint v2);
    typedef void (APIENTRYP PFNGLUNIFORM4IPROC) (GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
    typedef void (APIENTRYP PFNGLUNIFORM1FVPROC) (GLint location, GLsizei count, const GLfloat *value);
    typedef void (APIENTRYP PFNGLUNIFORM2FVPROC) (GLint location, GLsizei count, const GLfloat *value);
    typedef void (APIENTRYP PFNGLUNIFORM3FVPROC) (GLint location, GLsizei count, const GLfloat *value);
    typedef void (APIENTRYP PFNGLUNIFORM4FVPROC) (GLint location, GLsizei count, const GLfloat *value);
    typedef void (APIENTRYP PFNGLUNIFORM1IVPROC) (GLint location, GLsizei count, const GLint *value);
    typedef void (APIENTRYP PFNGLUNIFORM2IVPROC) (GLint location, GLsizei count, const GLint *value);
    typedef void (APIENTRYP PFNGLUNIFORM3IVPROC) (GLint location, GLsizei count, const GLint *value);
    typedef void (APIENTRYP PFNGLUNIFORM4IVPROC) (GLint location, GLsizei count, const GLint *value);
    typedef void (APIENTRYP PFNGLUNIFORMMATRIX2FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    typedef void (APIENTRYP PFNGLUNIFORMMATRIX3FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    typedef void (APIENTRYP PFNGLUNIFORMMATRIX4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    typedef void (APIENTRYP PFNGLVALIDATEPROGRAMPROC) (GLuint program);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB1DPROC) (GLuint index, GLdouble x);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB1DVPROC) (GLuint index, const GLdouble *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB1FPROC) (GLuint index, GLfloat x);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB1FVPROC) (GLuint index, const GLfloat *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB1SPROC) (GLuint index, GLshort x);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB1SVPROC) (GLuint index, const GLshort *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB2DPROC) (GLuint index, GLdouble x, GLdouble y);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB2DVPROC) (GLuint index, const GLdouble *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB2FPROC) (GLuint index, GLfloat x, GLfloat y);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB2FVPROC) (GLuint index, const GLfloat *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB2SPROC) (GLuint index, GLshort x, GLshort y);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB2SVPROC) (GLuint index, const GLshort *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB3DPROC) (GLuint index, GLdouble x, GLdouble y, GLdouble z);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB3DVPROC) (GLuint index, const GLdouble *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB3FPROC) (GLuint index, GLfloat x, GLfloat y, GLfloat z);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB3FVPROC) (GLuint index, const GLfloat *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB3SPROC) (GLuint index, GLshort x, GLshort y, GLshort z);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB3SVPROC) (GLuint index, const GLshort *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4NBVPROC) (GLuint index, const GLbyte *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4NIVPROC) (GLuint index, const GLint *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4NSVPROC) (GLuint index, const GLshort *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4NUBPROC) (GLuint index, GLubyte x, GLubyte y, GLubyte z, GLubyte w);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4NUBVPROC) (GLuint index, const GLubyte *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4NUIVPROC) (GLuint index, const GLuint *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4NUSVPROC) (GLuint index, const GLushort *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4BVPROC) (GLuint index, const GLbyte *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4DPROC) (GLuint index, GLdouble x, GLdouble y, GLdouble z, GLdouble w);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4DVPROC) (GLuint index, const GLdouble *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4FPROC) (GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4FVPROC) (GLuint index, const GLfloat *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4IVPROC) (GLuint index, const GLint *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4SPROC) (GLuint index, GLshort x, GLshort y, GLshort z, GLshort w);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4SVPROC) (GLuint index, const GLshort *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4UBVPROC) (GLuint index, const GLubyte *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4UIVPROC) (GLuint index, const GLuint *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIB4USVPROC) (GLuint index, const GLushort *v);
    typedef void (APIENTRYP PFNGLVERTEXATTRIBPOINTERPROC) (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer);
    #ifdef GL_GLEXT_PROTOTYPES
    GLAPI void APIENTRY glBlendEquationSeparate (GLenum modeRGB, GLenum modeAlpha);
    GLAPI void APIENTRY glDrawBuffers (GLsizei n, const GLenum *bufs);
    GLAPI void APIENTRY glStencilOpSeparate (GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass);
    GLAPI void APIENTRY glStencilFuncSeparate (GLenum face, GLenum func, GLint ref, GLuint mask);
    GLAPI void APIENTRY glStencilMaskSeparate (GLenum face, GLuint mask);
    GLAPI void APIENTRY glAttachShader (GLuint program, GLuint shader);
    GLAPI void APIENTRY glBindAttribLocation (GLuint program, GLuint index, const GLchar *name);
    GLAPI void APIENTRY glCompileShader (GLuint shader);
    GLAPI GLuint APIENTRY glCreateProgram (void);
    GLAPI GLuint APIENTRY glCreateShader (GLenum type);
    GLAPI void APIENTRY glDeleteProgram (GLuint program);
    GLAPI void APIENTRY glDeleteShader (GLuint shader);
    GLAPI void APIENTRY glDetachShader (GLuint program, GLuint shader);
    GLAPI void APIENTRY glDisableVertexAttribArray (GLuint index);
    GLAPI void APIENTRY glEnableVertexAttribArray (GLuint index);
    GLAPI void APIENTRY glGetActiveAttrib (GLuint program, GLuint index, GLsizei bufSize, GLsizei *length, GLint *size, GLenum *type, GLchar *name);
    GLAPI void APIENTRY glGetActiveUniform (GLuint program, GLuint index, GLsizei bufSize, GLsizei *length, GLint *size, GLenum *type, GLchar *name);
    GLAPI void APIENTRY glGetAttachedShaders (GLuint program, GLsizei maxCount, GLsizei *count, GLuint *shaders);
    GLAPI GLint APIENTRY glGetAttribLocation (GLuint program, const GLchar *name);
    GLAPI void APIENTRY glGetProgramiv (GLuint program, GLenum pname, GLint *params);
    GLAPI void APIENTRY glGetProgramInfoLog (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
    GLAPI void APIENTRY glGetShaderiv (GLuint shader, GLenum pname, GLint *params);
    GLAPI void APIENTRY glGetShaderInfoLog (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
    GLAPI void APIENTRY glGetShaderSource (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *source);
    GLAPI GLint APIENTRY glGetUniformLocation (GLuint program, const GLchar *name);
    GLAPI void APIENTRY glGetUniformfv (GLuint program, GLint location, GLfloat *params);
    GLAPI void APIENTRY glGetUniformiv (GLuint program, GLint location, GLint *params);
    GLAPI void APIENTRY glGetVertexAttribdv (GLuint index, GLenum pname, GLdouble *params);
    GLAPI void APIENTRY glGetVertexAttribfv (GLuint index, GLenum pname, GLfloat *params);
    GLAPI void APIENTRY glGetVertexAttribiv (GLuint index, GLenum pname, GLint *params);
    GLAPI void APIENTRY glGetVertexAttribPointerv (GLuint index, GLenum pname, void **pointer);
    GLAPI GLboolean APIENTRY glIsProgram (GLuint program);
    GLAPI GLboolean APIENTRY glIsShader (GLuint shader);
    GLAPI void APIENTRY glLinkProgram (GLuint program);
    GLAPI void APIENTRY glShaderSource (GLuint shader, GLsizei count, const GLchar *const*string, const GLint *length);
    GLAPI void APIENTRY glUseProgram (GLuint program);
    GLAPI void APIENTRY glUniform1f (GLint location, GLfloat v0);
    GLAPI void APIENTRY glUniform2f (GLint location, GLfloat v0, GLfloat v1);
    GLAPI void APIENTRY glUniform3f (GLint location, GLfloat v0, GLfloat v1, GLfloat v2);
    GLAPI void APIENTRY glUniform4f (GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
    GLAPI void APIENTRY glUniform1i (GLint location, GLint v0);
    GLAPI void APIENTRY glUniform2i (GLint location, GLint v0, GLint v1);
    GLAPI void APIENTRY glUniform3i (GLint location, GLint v0, GLint v1, GLint v2);
    GLAPI void APIENTRY glUniform4i (GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
    GLAPI void APIENTRY glUniform1fv (GLint location, GLsizei count, const GLfloat *value);
    GLAPI void APIENTRY glUniform2fv (GLint location, GLsizei count, const GLfloat *value);
    GLAPI void APIENTRY glUniform3fv (GLint location, GLsizei count, const GLfloat *value);
    GLAPI void APIENTRY glUniform4fv (GLint location, GLsizei count, const GLfloat *value);
    GLAPI void APIENTRY glUniform1iv (GLint location, GLsizei count, const GLint *value);
    GLAPI void APIENTRY glUniform2iv (GLint location, GLsizei count, const GLint *value);
    GLAPI void APIENTRY glUniform3iv (GLint location, GLsizei count, const GLint *value);
    GLAPI void APIENTRY glUniform4iv (GLint location, GLsizei count, const GLint *value);
    GLAPI void APIENTRY glUniformMatrix2fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    GLAPI void APIENTRY glUniformMatrix3fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    GLAPI void APIENTRY glUniformMatrix4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    GLAPI void APIENTRY glValidateProgram (GLuint program);
    GLAPI void APIENTRY glVertexAttrib1d (GLuint index, GLdouble x);
    GLAPI void APIENTRY glVertexAttrib1dv (GLuint index, const GLdouble *v);
    GLAPI void APIENTRY glVertexAttrib1f (GLuint index, GLfloat x);
    GLAPI void APIENTRY glVertexAttrib1fv (GLuint index, const GLfloat *v);
    GLAPI void APIENTRY glVertexAttrib1s (GLuint index, GLshort x);
    GLAPI void APIENTRY glVertexAttrib1sv (GLuint index, const GLshort *v);
    GLAPI void APIENTRY glVertexAttrib2d (GLuint index, GLdouble x, GLdouble y);
    GLAPI void APIENTRY glVertexAttrib2dv (GLuint index, const GLdouble *v);
    GLAPI void APIENTRY glVertexAttrib2f (GLuint index, GLfloat x, GLfloat y);
    GLAPI void APIENTRY glVertexAttrib2fv (GLuint index, const GLfloat *v);
    GLAPI void APIENTRY glVertexAttrib2s (GLuint index, GLshort x, GLshort y);
    GLAPI void APIENTRY glVertexAttrib2sv (GLuint index, const GLshort *v);
    GLAPI void APIENTRY glVertexAttrib3d (GLuint index, GLdouble x, GLdouble y, GLdouble z);
    GLAPI void APIENTRY glVertexAttrib3dv (GLuint index, const GLdouble *v);
    GLAPI void APIENTRY glVertexAttrib3f (GLuint index, GLfloat x, GLfloat y, GLfloat z);
    GLAPI void APIENTRY glVertexAttrib3fv (GLuint index, const GLfloat *v);
    GLAPI void APIENTRY glVertexAttrib3s (GLuint index, GLshort x, GLshort y, GLshort z);
    GLAPI void APIENTRY glVertexAttrib3sv (GLuint index, const GLshort *v);
    GLAPI void APIENTRY glVertexAttrib4Nbv (GLuint index, const GLbyte *v);
    GLAPI void APIENTRY glVertexAttrib4Niv (GLuint index, const GLint *v);
    GLAPI void APIENTRY glVertexAttrib4Nsv (GLuint index, const GLshort *v);
    GLAPI void APIENTRY glVertexAttrib4Nub (GLuint index, GLubyte x, GLubyte y, GLubyte z, GLubyte w);
    GLAPI void APIENTRY glVertexAttrib4Nubv (GLuint index, const GLubyte *v);
    GLAPI void APIENTRY glVertexAttrib4Nuiv (GLuint index, const GLuint *v);
    GLAPI void APIENTRY glVertexAttrib4Nusv (GLuint index, const GLushort *v);
    GLAPI void APIENTRY glVertexAttrib4bv (GLuint index, const GLbyte *v);
    GLAPI void APIENTRY glVertexAttrib4d (GLuint index, GLdouble x, GLdouble y, GLdouble z, GLdouble w);
    GLAPI void APIENTRY glVertexAttrib4dv (GLuint index, const GLdouble *v);
    GLAPI void APIENTRY glVertexAttrib4f (GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
    GLAPI void APIENTRY glVertexAttrib4fv (GLuint index, const GLfloat *v);
    GLAPI void APIENTRY glVertexAttrib4iv (GLuint index, const GLint *v);
    GLAPI void APIENTRY glVertexAttrib4s (GLuint index, GLshort x, GLshort y, GLshort z, GLshort w);
    GLAPI void APIENTRY glVertexAttrib4sv (GLuint index, const GLshort *v);
    GLAPI void APIENTRY glVertexAttrib4ubv (GLuint index, const GLubyte *v);
    GLAPI void APIENTRY glVertexAttrib4uiv (GLuint index, const GLuint *v);
    GLAPI void APIENTRY glVertexAttrib4usv (GLuint index, const GLushort *v);
    GLAPI void APIENTRY glVertexAttribPointer (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer);
    #endif
    #endif /* GL_VERSION_2_0 */
    
    #ifndef GL_VERSION_2_1
    #define GL_VERSION_2_1 1
    #define GL_PIXEL_PACK_BUFFER              0x88EB
    #define GL_PIXEL_UNPACK_BUFFER            0x88EC
    #define GL_PIXEL_PACK_BUFFER_BINDING      0x88ED
    #define GL_PIXEL_UNPACK_BUFFER_BINDING    0x88EF
    #define GL_FLOAT_MAT2x3                   0x8B65
    #define GL_FLOAT_MAT2x4                   0x8B66
    #define GL_FLOAT_MAT3x2                   0x8B67
    #define GL_FLOAT_MAT3x4                   0x8B68
    #define GL_FLOAT_MAT4x2                   0x8B69
    #define GL_FLOAT_MAT4x3                   0x8B6A
    #define GL_SRGB                           0x8C40
    #define GL_SRGB8                          0x8C41
    #define GL_SRGB_ALPHA                     0x8C42
    #define GL_SRGB8_ALPHA8                   0x8C43
    #define GL_COMPRESSED_SRGB                0x8C48
    #define GL_COMPRESSED_SRGB_ALPHA          0x8C49
    #define GL_CURRENT_RASTER_SECONDARY_COLOR 0x845F
    #define GL_SLUMINANCE_ALPHA               0x8C44
    #define GL_SLUMINANCE8_ALPHA8             0x8C45
    #define GL_SLUMINANCE                     0x8C46
    #define GL_SLUMINANCE8                    0x8C47
    #define GL_COMPRESSED_SLUMINANCE          0x8C4A
    #define GL_COMPRESSED_SLUMINANCE_ALPHA    0x8C4B
    typedef void (APIENTRYP PFNGLUNIFORMMATRIX2X3FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    typedef void (APIENTRYP PFNGLUNIFORMMATRIX3X2FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    typedef void (APIENTRYP PFNGLUNIFORMMATRIX2X4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    typedef void (APIENTRYP PFNGLUNIFORMMATRIX4X2FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    typedef void (APIENTRYP PFNGLUNIFORMMATRIX3X4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    typedef void (APIENTRYP PFNGLUNIFORMMATRIX4X3FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    #ifdef GL_GLEXT_PROTOTYPES
    GLAPI void APIENTRY glUniformMatrix2x3fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    GLAPI void APIENTRY glUniformMatrix3x2fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    GLAPI void APIENTRY glUniformMatrix2x4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    GLAPI void APIENTRY glUniformMatrix4x2fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    GLAPI void APIENTRY glUniformMatrix3x4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    GLAPI void APIENTRY glUniformMatrix4x3fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
    #endif
    #endif /* GL_VERSION_2_1 */
    
    #ifndef GL_VERSION_3_0
    #define GL_VERSION_3_0 1
    typedef unsigned short GLhalf;
    #define GL_COMPARE_REF_TO_TEXTURE         0x884E
    #define GL_CLIP_DISTANCE0                 0x3000
    #define GL_CLIP_DISTANCE1                 0x3001
    #define GL_CLIP_DISTANCE2                 0x3002
    #define GL_CLIP_DISTANCE3                 0x3003
    #define GL_CLIP_DISTANCE4                 0x3004
    #define GL_CLIP_DISTANCE5                 0x3005
    #define GL_CLIP_DISTANCE6                 0x3006
    #define GL_CLIP_DISTANCE7                 0x3007
    #define GL_MAX_CLIP_DISTANCES             0x0D32
    #define GL_MAJOR_VERSION                  0x821B
    #define GL_MINOR_VERSION                  0x821C
    #define GL_NUM_EXTENSIONS                 0x821D
    #define GL_CONTEXT_FLAGS                  0x821E
    #define GL_COMPRESSED_RED                 0x8225
    #define GL_COMPRESSED_RG                  0x8226
    #define GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT 0x00000001
    #define GL_RGBA32F                        0x8814
    #define GL_RGB32F                         0x8815
    #define GL_RGBA16F                        0x881A
    #define GL_RGB16F                         0x881B
    #define GL_VERTEX_ATTRIB_ARRAY_INTEGER    0x88FD
    #define GL_MAX_ARRAY_TEXTURE_LAYERS       0x88FF
    #define GL_MIN_PROGRAM_TEXEL_OFFSET       0x8904
    #define GL_MAX_PROGRAM_TEXEL_OFFSET       0x8905
    #define GL_CLAMP_READ_COLOR               0x891C
    #define GL_FIXED_ONLY                     0x891D
    #define GL_MAX_VARYING_COMPONENTS         0x8B4B
    #define GL_TEXTURE_1D_ARRAY               0x8C18
    #define GL_PROXY_TEXTURE_1D_ARRAY         0x8C19
    #define GL_TEXTURE_2D_ARRAY               0x8C1A
    #define GL_PROXY_TEXTURE_2D_ARRAY         0x8C1B
    #define GL_TEXTURE_BINDING_1D_ARRAY       0x8C1C
    #define GL_TEXTURE_BINDING_2D_ARRAY       0x8C1D
    #define GL_R11F_G11F_B10F                 0x8C3A
    #define GL_UNSIGNED_INT_10F_11F_11F_REV   0x8C3B
    #define GL_RGB9_E5                        0x8C3D
    #define GL_UNSIGNED_INT_5_9_9_9_REV       0x8C3E
    #define GL_TEXTURE_SHARED_SIZE            0x8C3F
    #define GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH 0x8C76
    #define GL_TRANSFORM_FEEDBACK_BUFFER_MODE 0x8C7F
    #define GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS 0x8C80
    #define GL_TRANSFORM_FEEDBACK_VARYINGS    0x8C83
    #define GL_TRANSFORM_FEEDBACK_BUFFER_START 0x8C84
    #define GL_TRANSFORM_FEEDBACK_BUFFER_SIZE 0x8C85
    #define GL_PRIMITIVES_GENERATED           0x8C87
    #define GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN 0x8C88
    #define GL_RASTERIZER_DISCARD             0x8C89
    #define GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS 0x8C8A
    #define GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS 0x8C8B
    #define GL_INTERLEAVED_ATTRIBS            0x8C8C
    #define GL_SEPARATE_ATTRIBS               0x8C8D
    #define GL_TRANSFORM_FEEDBACK_BUFFER      0x8C8E
    #define GL_TRANSFORM_FEEDBACK_BUFFER_BINDING 0x8C8F
    #define GL_RGBA32UI                       0x8D70
    #define GL_RGB32UI                        0x8D71
    #define GL_RGBA16UI                       0x8D76
    #define GL_RGB16UI                        0x8D77
    #define GL_RGBA8UI                        0x8D7C
    #define GL_RGB8UI                         0x8D7D
    #define GL_RGBA32I                        0x8D82
    #define GL_RGB32I                         0x8D83
    #define GL_RGBA16I                        0x8D88
    #define GL_RGB16I                         0x8D89
    #define GL_RGBA8I                         0x8D8E
    #define GL_RGB8I                          0x8D8F
    #define GL_RED_INTEGER                    0x8D94
    #define GL_GREEN_INTEGER                  0x8D95
    #define GL_BLUE_INTEGER                   0x8D96
    #define GL_RGB_INTEGER                    0x8D98
    #define GL_RGBA_INTEGER                   0x8D99
    #define GL_BGR_INTEGER                    0x8D9A
    #define GL_BGRA_INTEGER                   0x8D9B
    #define GL_SAMPLER_1D_ARRAY               0x8DC0
    #define GL_SAMPLER_2D_ARRAY               0x8DC1
    #define GL_SAMPLER_1D_ARRAY_SHADOW        0x8DC3
    #define GL_SAMPLER_2D_ARRAY_SHADOW        0x8DC4
    #define GL_SAMPLER_CUBE_SHADOW            0x8DC5
    #define GL_UNSIGNED_INT_VEC2              0x8DC6
    #define GL_UNSIGNED_INT_VEC3              0x8DC7
    #define GL_UNSIGNED_INT_VEC4              0x8DC8
    #define GL_INT_SAMPLER_1D                 0x8DC9
    #define GL_INT_SAMPLER_2D                 0x8DCA
    #define GL_INT_SAMPLER_3D                 0x8DCB
    #define GL_INT_SAMPLER_CUBE               0x8DCC
    #define GL_INT_SAMPLER_1D_ARRAY           0x8DCE
    #define GL_INT_SAMPLER_2D_ARRAY           0x8DCF
    #define GL_UNSIGNED_INT_SAMPLER_1D        0x8DD1
    #define GL_UNSIGNED_INT_SAMPLER_2D        0x8DD2
    #define GL_UNSIGNED_INT_SAMPLER_3D        0x8DD3
    #define GL_UNSIGNED_INT_SAMPLER_CUBE      0x8DD4
    #define GL_UNSIGNED_INT_SAMPLER_1D_ARRAY  0x8DD6
    #define GL_UNSIGNED_INT_SAMPLER_2D_ARRAY  0x8DD7
    #define GL_QUERY_WAIT                     0x8E13
    #define GL_QUERY_NO_WAIT                  0x8E14
    #define GL_QUERY_BY_REGION_WAIT           0x8E15
    #define GL_QUERY_BY_REGION_NO_WAIT        0x8E16
    #define GL_BUFFER_ACCESS_FLAGS            0x911F
    #define GL_BUFFER_MAP_LENGTH              0x9120
    #define GL_BUFFER_MAP_OFFSET              0x9121
    #define GL_DEPTH_COMPONENT32F             0x8CAC
    #define GL_DEPTH32F_STENCIL8              0x8CAD
    #define GL_FLOAT_32_UNSIGNED_INT_24_8_REV 0x8DAD
    #define GL_INVALID_FRAMEBUFFER_OPERATION  0x0506
    #define GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING 0x8210
    #define GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE 0x8211
    #define GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE 0x8212
    #define GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE 0x8213
    #define GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE 0x8214
    #define GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE 0x8215
    #define GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE 0x8216
    #define GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE 0x8217
    #define GL_FRAMEBUFFER_DEFAULT            0x8218
    #define GL_FRAMEBUFFER_UNDEFINED          0x8219
    #define GL_DEPTH_STENCIL_ATTACHMENT       0x821A
    #define GL_MAX_RENDERBUFFER_SIZE          0x84E8
    #define GL_DEPTH_STENCIL                  0x84F9
    #define GL_UNSIGNED_INT_24_8              0x84FA