text: /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:
  
    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.
  */
  
  /**
   *  \file SDL_opengles.h
   *
   *  This is a simple file to encapsulate the OpenGL ES 2.0 API headers.
   */
  #ifndef _MSC_VER
  #ifdef __IPHONEOS__
      #include <OpenGLES/ES2/gl.h>
      #include <OpenGLES/ES2/glext.h>
  #else
      #include <GLES2/gl2.h>
      #include <GLES2/gl2ext.h>
  #endif
  
  #else /* _MSC_VER */
  
  /* OpenGL ES2 headers for Visual Studio */
  
  #ifndef __khrplatform_h_
  #define __khrplatform_h_
  
  /*
  ** Copyright (c) 2008-2009 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.
  */
  
  /* Khronos platform-specific types and definitions.
  *
  * $Revision: 23298 $ on $Date: 2013-09-30 17:07:13 -0700 (Mon, 30 Sep 2013) $
  *
  * Adopters may modify this file to suit their platform. Adopters are
  * encouraged to submit platform specific modifications to the Khronos
  * group so that they can be included in future versions of this file.
  * Please submit changes by sending them to the public Khronos Bugzilla
  * (http://khronos.org/bugzilla) by filing a bug against product
  * "Khronos (general)" component "Registry".
  *
  * A predefined template which fills in some of the bug fields can be
  * reached using http://tinyurl.com/khrplatform-h-bugreport, but you
  * must create a Bugzilla login first.
  *
  *
  * See the Implementer's Guidelines for information about where this file
  * should be located on your system and for more details of its use:
  *    http://www.khronos.org/registry/implementers_guide.pdf
  *
  * This file should be included as
  *        #include <KHR/khrplatform.h>
  * by Khronos client API header files that use its types and defines.
  *
  * The types in khrplatform.h should only be used to define API-specific types.
  *
  * Types defined in khrplatform.h:
  *    khronos_int8_t              signed   8  bit
  *    khronos_uint8_t             unsigned 8  bit
  *    khronos_int16_t             signed   16 bit
  *    khronos_uint16_t            unsigned 16 bit
  *    khronos_int32_t             signed   32 bit
  *    khronos_uint32_t            unsigned 32 bit
  *    khronos_int64_t             signed   64 bit
  *    khronos_uint64_t            unsigned 64 bit
  *    khronos_intptr_t            signed   same number of bits as a pointer
  *    khronos_uintptr_t           unsigned same number of bits as a pointer
  *    khronos_ssize_t             signed   size
  *    khronos_usize_t             unsigned size
  *    khronos_float_t             signed   32 bit floating point
  *    khronos_time_ns_t           unsigned 64 bit time in nanoseconds
  *    khronos_utime_nanoseconds_t unsigned time interval or absolute time in
  *                                         nanoseconds
  *    khronos_stime_nanoseconds_t signed time interval in nanoseconds
  *    khronos_boolean_enum_t      enumerated boolean type. This should
  *      only be used as a base type when a client API's boolean type is
  *      an enum. Client APIs which use an integer or other type for
  *      booleans cannot use this as the base type for their boolean.
  *
  * Tokens defined in khrplatform.h:
  *
  *    KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
  *
  *    KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
  *    KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
  *
  * Calling convention macros defined in this file:
  *    KHRONOS_APICALL
  *    KHRONOS_APIENTRY
  *    KHRONOS_APIATTRIBUTES
  *
  * These may be used in function prototypes as:
  *
  *      KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
  *                                  int arg1,
  *                                  int arg2) KHRONOS_APIATTRIBUTES;
  */
  
  /*-------------------------------------------------------------------------
  * Definition of KHRONOS_APICALL
  *-------------------------------------------------------------------------
  * This precedes the return type of the function in the function prototype.
  */
  #if defined(_WIN32) && !defined(__SCITECH_SNAP__)
      #define KHRONOS_APICALL __declspec(dllimport)
  #elif defined (__SYMBIAN32__)
      #define KHRONOS_APICALL IMPORT_C
  #else
      #define KHRONOS_APICALL
  #endif
  
  /*-------------------------------------------------------------------------
  * Definition of KHRONOS_APIENTRY
  *-------------------------------------------------------------------------
  * This follows the return type of the function  and precedes the function
  * name in the function prototype.
  */
  #if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
      /* Win32 but not WinCE */
      #define KHRONOS_APIENTRY __stdcall
  #else
      #define KHRONOS_APIENTRY
  #endif
  
  /*-------------------------------------------------------------------------
  * Definition of KHRONOS_APIATTRIBUTES
  *-------------------------------------------------------------------------
  * This follows the closing parenthesis of the function prototype arguments.
  */
  #if defined (__ARMCC_2__)
      #define KHRONOS_APIATTRIBUTES __softfp
  #else
      #define KHRONOS_APIATTRIBUTES
  #endif
  
  /*-------------------------------------------------------------------------
  * basic type definitions
  *-----------------------------------------------------------------------*/
  #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
  
  
      /*
      * Using <stdint.h>
      */
      #include <stdint.h>
      typedef int32_t                 khronos_int32_t;
      typedef uint32_t                khronos_uint32_t;
      typedef int64_t                 khronos_int64_t;
      typedef uint64_t                khronos_uint64_t;
      #define KHRONOS_SUPPORT_INT64   1
      #define KHRONOS_SUPPORT_FLOAT   1
  
  #elif defined(__VMS ) || defined(__sgi)
  
      /*
      * Using <inttypes.h>
      */
      #include <inttypes.h>
      typedef int32_t                 khronos_int32_t;
      typedef uint32_t                khronos_uint32_t;
      typedef int64_t                 khronos_int64_t;
      typedef uint64_t                khronos_uint64_t;
      #define KHRONOS_SUPPORT_INT64   1
      #define KHRONOS_SUPPORT_FLOAT   1
  
  #elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
  
      /*
      * Win32
      */
      typedef __int32                 khronos_int32_t;
      typedef unsigned __int32        khronos_uint32_t;
      typedef __int64                 khronos_int64_t;
      typedef unsigned __int64        khronos_uint64_t;
      #define KHRONOS_SUPPORT_INT64   1
      #define KHRONOS_SUPPORT_FLOAT   1
  
  #elif defined(__sun__) || defined(__digital__)
  
      /*
      * Sun or Digital
      */
      typedef int                     khronos_int32_t;
      typedef unsigned int            khronos_uint32_t;
      #if defined(__arch64__) || defined(_LP64)
          typedef long int                khronos_int64_t;
          typedef unsigned long int       khronos_uint64_t;
      #else
          typedef long long int           khronos_int64_t;
          typedef unsigned long long int  khronos_uint64_t;
      #endif /* __arch64__ */
      #define KHRONOS_SUPPORT_INT64   1
      #define KHRONOS_SUPPORT_FLOAT   1
  
  #elif 0
  
      /*
      * Hypothetical platform with no float or int64 support
      */
      typedef int                     khronos_int32_t;
      typedef unsigned int            khronos_uint32_t;
      #define KHRONOS_SUPPORT_INT64   0
      #define KHRONOS_SUPPORT_FLOAT   0
  
  #else
  
      /*
      * Generic fallback
      */
      #include <stdint.h>
      typedef int32_t                 khronos_int32_t;
      typedef uint32_t                khronos_uint32_t;
      typedef int64_t                 khronos_int64_t;
      typedef uint64_t                khronos_uint64_t;
      #define KHRONOS_SUPPORT_INT64   1
      #define KHRONOS_SUPPORT_FLOAT   1
  
  #endif
  
  
  /*
  * Types that are (so far) the same on all platforms
  */
  typedef signed   char          khronos_int8_t;
  typedef unsigned char          khronos_uint8_t;
  typedef signed   short int     khronos_int16_t;
  typedef unsigned short int     khronos_uint16_t;
  
  /*
  * Types that differ between LLP64 and LP64 architectures - in LLP64,
  * pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
  * to be the only LLP64 architecture in current use.
  */
  #ifdef _WIN64
      typedef signed   long long int khronos_intptr_t;
      typedef unsigned long long int khronos_uintptr_t;
      typedef signed   long long int khronos_ssize_t;
      typedef unsigned long long int khronos_usize_t;
  #else
      typedef signed   long  int     khronos_intptr_t;
      typedef unsigned long  int     khronos_uintptr_t;
      typedef signed   long  int     khronos_ssize_t;
      typedef unsigned long  int     khronos_usize_t;
  #endif
  
  #if KHRONOS_SUPPORT_FLOAT
      /*
      * Float type
      */
      typedef          float         khronos_float_t;
  #endif
  
  #if KHRONOS_SUPPORT_INT64
      /* Time types
      *
      * These types can be used to represent a time interval in nanoseconds or
      * an absolute Unadjusted System Time.  Unadjusted System Time is the number
      * of nanoseconds since some arbitrary system event (e.g. since the last
      * time the system booted).  The Unadjusted System Time is an unsigned
      * 64 bit value that wraps back to 0 every 584 years.  Time intervals
      * may be either signed or unsigned.
      */
      typedef khronos_uint64_t       khronos_utime_nanoseconds_t;
      typedef khronos_int64_t        khronos_stime_nanoseconds_t;
  #endif
  
  /*
  * Dummy value used to pad enum types to 32 bits.
  */
  #ifndef KHRONOS_MAX_ENUM
      #define KHRONOS_MAX_ENUM 0x7FFFFFFF
  #endif
  
  /*
  * Enumerated boolean type
  *
  * Values other than zero should be considered to be true.  Therefore
  * comparisons should not be made against KHRONOS_TRUE.
  */
  typedef enum {
      KHRONOS_FALSE = 0,
      KHRONOS_TRUE = 1,
      KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
  } khronos_boolean_enum_t;
  
  #endif /* __khrplatform_h_ */
  
  
  #ifndef __gl2platform_h_
      #define __gl2platform_h_
  
      /* $Revision: 10602 $ on $Date:: 2010-03-04 22:35:34 -0800 #$ */
  
      /*
      * This document is licensed under the SGI Free Software B License Version
      * 2.0. For details, see http://oss.sgi.com/projects/FreeB/ .
      */
  
      /* Platform-specific types and definitions for OpenGL ES 2.X  gl2.h
      *
      * Adopters may modify khrplatform.h and this file to suit their platform.
      * You are encouraged to submit all modifications to the Khronos group so that
      * they can be included in future versions of this file.  Please submit changes
      * by sending them to the public Khronos Bugzilla (http://khronos.org/bugzilla)
      * by filing a bug against product "OpenGL-ES" component "Registry".
      */
  
      /*#include <KHR/khrplatform.h>*/
  
      #ifndef GL_APICALL
          #define GL_APICALL  KHRONOS_APICALL
      #endif
  
      #ifndef GL_APIENTRY
          #define GL_APIENTRY KHRONOS_APIENTRY
      #endif
  
  #endif /* __gl2platform_h_ */
  
  #ifndef __gl2_h_
  #define __gl2_h_
  
  /* $Revision: 16803 $ on $Date:: 2012-02-02 09:49:18 -0800 #$ */
  
  /*#include <GLES2/gl2platform.h>*/
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /*
   * This document is licensed under the SGI Free Software B License Version
   * 2.0. For details, see http://oss.sgi.com/projects/FreeB/ .
   */
  
  /*-------------------------------------------------------------------------
   * Data type definitions
   *-----------------------------------------------------------------------*/
  
  typedef void             GLvoid;
  typedef char             GLchar;
  typedef unsigned int     GLenum;
  typedef unsigned char    GLboolean;
  typedef unsigned int     GLbitfield;
  typedef khronos_int8_t   GLbyte;
  typedef short            GLshort;
  typedef int              GLint;
  typedef int              GLsizei;
  typedef khronos_uint8_t  GLubyte;
  typedef unsigned short   GLushort;
  typedef unsigned int     GLuint;
  typedef khronos_float_t  GLfloat;
  typedef khronos_float_t  GLclampf;
  typedef khronos_int32_t  GLfixed;
  
  /* GL types for handling large vertex buffer objects */
  typedef khronos_intptr_t GLintptr;
  typedef khronos_ssize_t  GLsizeiptr;
  
  /* OpenGL ES core versions */
  #define GL_ES_VERSION_2_0                 1
  
  /* ClearBufferMask */
  #define GL_DEPTH_BUFFER_BIT               0x00000100
  #define GL_STENCIL_BUFFER_BIT             0x00000400
  #define GL_COLOR_BUFFER_BIT               0x00004000
  
  /* Boolean */
  #define GL_FALSE                          0
  #define GL_TRUE                           1
  
  /* BeginMode */
  #define GL_POINTS                         0x0000
  #define GL_LINES                          0x0001
  #define GL_LINE_LOOP                      0x0002
  #define GL_LINE_STRIP                     0x0003
  #define GL_TRIANGLES                      0x0004
  #define GL_TRIANGLE_STRIP                 0x0005
  #define GL_TRIANGLE_FAN                   0x0006
  
  /* AlphaFunction (not supported in ES20) */
  /*      GL_NEVER */
  /*      GL_LESS */
  /*      GL_EQUAL */
  /*      GL_LEQUAL */
  /*      GL_GREATER */
  /*      GL_NOTEQUAL */
  /*      GL_GEQUAL */
  /*      GL_ALWAYS */
  
  /* BlendingFactorDest */
  #define GL_ZERO                           0
  #define GL_ONE                            1
  #define GL_SRC_COLOR                      0x0300
  #define GL_ONE_MINUS_SRC_COLOR            0x0301
  #define GL_SRC_ALPHA                      0x0302
  #define GL_ONE_MINUS_SRC_ALPHA            0x0303
  #define GL_DST_ALPHA                      0x0304
  #define GL_ONE_MINUS_DST_ALPHA            0x0305
  
  /* BlendingFactorSrc */
  /*      GL_ZERO */
  /*      GL_ONE */
  #define GL_DST_COLOR                      0x0306
  #define GL_ONE_MINUS_DST_COLOR            0x0307
  #define GL_SRC_ALPHA_SATURATE             0x0308
  /*      GL_SRC_ALPHA */
  /*      GL_ONE_MINUS_SRC_ALPHA */
  /*      GL_DST_ALPHA */
  /*      GL_ONE_MINUS_DST_ALPHA */
  
  /* BlendEquationSeparate */
  #define GL_FUNC_ADD                       0x8006
  #define GL_BLEND_EQUATION                 0x8009
  #define GL_BLEND_EQUATION_RGB             0x8009    /* same as BLEND_EQUATION */
  #define GL_BLEND_EQUATION_ALPHA           0x883D
  
  /* BlendSubtract */
  #define GL_FUNC_SUBTRACT                  0x800A
  #define GL_FUNC_REVERSE_SUBTRACT          0x800B
  
  /* Separate Blend Functions */
  #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_CONSTANT_COLOR                 0x8001
  #define GL_ONE_MINUS_CONSTANT_COLOR       0x8002
  #define GL_CONSTANT_ALPHA                 0x8003
  #define GL_ONE_MINUS_CONSTANT_ALPHA       0x8004
  #define GL_BLEND_COLOR                    0x8005
  
  /* Buffer Objects */
  #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_STREAM_DRAW                    0x88E0
  #define GL_STATIC_DRAW                    0x88E4
  #define GL_DYNAMIC_DRAW                   0x88E8
  
  #define GL_BUFFER_SIZE                    0x8764
  #define GL_BUFFER_USAGE                   0x8765
  
  #define GL_CURRENT_VERTEX_ATTRIB          0x8626
  
  /* CullFaceMode */
  #define GL_FRONT                          0x0404
  #define GL_BACK                           0x0405
  #define GL_FRONT_AND_BACK                 0x0408
  
  /* DepthFunction */
  /*      GL_NEVER */
  /*      GL_LESS */
  /*      GL_EQUAL */
  /*      GL_LEQUAL */
  /*      GL_GREATER */
  /*      GL_NOTEQUAL */
  /*      GL_GEQUAL */
  /*      GL_ALWAYS */
  
  /* EnableCap */
  #define GL_TEXTURE_2D                     0x0DE1
  #define GL_CULL_FACE                      0x0B44
  #define GL_BLEND                          0x0BE2
  #define GL_DITHER                         0x0BD0
  #define GL_STENCIL_TEST                   0x0B90
  #define GL_DEPTH_TEST                     0x0B71
  #define GL_SCISSOR_TEST                   0x0C11
  #define GL_POLYGON_OFFSET_FILL            0x8037
  #define GL_SAMPLE_ALPHA_TO_COVERAGE       0x809E
  #define GL_SAMPLE_COVERAGE                0x80A0
  
  /* ErrorCode */
  #define GL_NO_ERROR                       0
  #define GL_INVALID_ENUM                   0x0500
  #define GL_INVALID_VALUE                  0x0501
  #define GL_INVALID_OPERATION              0x0502
  #define GL_OUT_OF_MEMORY                  0x0505
  
  /* FrontFaceDirection */
  #define GL_CW                             0x0900
  #define GL_CCW                            0x0901
  
  /* GetPName */
  #define GL_LINE_WIDTH                     0x0B21
  #define GL_ALIASED_POINT_SIZE_RANGE       0x846D
  #define GL_ALIASED_LINE_WIDTH_RANGE       0x846E
  #define GL_CULL_FACE_MODE                 0x0B45
  #define GL_FRONT_FACE                     0x0B46
  #define GL_DEPTH_RANGE                    0x0B70
  #define GL_DEPTH_WRITEMASK                0x0B72
  #define GL_DEPTH_CLEAR_VALUE              0x0B73
  #define GL_DEPTH_FUNC                     0x0B74
  #define GL_STENCIL_CLEAR_VALUE            0x0B91
  #define GL_STENCIL_FUNC                   0x0B92
  #define GL_STENCIL_FAIL                   0x0B94
  #define GL_STENCIL_PASS_DEPTH_FAIL        0x0B95
  #define GL_STENCIL_PASS_DEPTH_PASS        0x0B96
  #define GL_STENCIL_REF                    0x0B97
  #define GL_STENCIL_VALUE_MASK             0x0B93
  #define GL_STENCIL_WRITEMASK              0x0B98
  #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_STENCIL_BACK_REF               0x8CA3
  #define GL_STENCIL_BACK_VALUE_MASK        0x8CA4
  #define GL_STENCIL_BACK_WRITEMASK         0x8CA5
  #define GL_VIEWPORT                       0x0BA2
  #define GL_SCISSOR_BOX                    0x0C10
  /*      GL_SCISSOR_TEST */
  #define GL_COLOR_CLEAR_VALUE              0x0C22
  #define GL_COLOR_WRITEMASK                0x0C23
  #define GL_UNPACK_ALIGNMENT               0x0CF5
  #define GL_PACK_ALIGNMENT                 0x0D05
  #define GL_MAX_TEXTURE_SIZE               0x0D33
  #define GL_MAX_VIEWPORT_DIMS              0x0D3A
  #define GL_SUBPIXEL_BITS                  0x0D50
  #define GL_RED_BITS                       0x0D52
  #define GL_GREEN_BITS                     0x0D53
  #define GL_BLUE_BITS                      0x0D54
  #define GL_ALPHA_BITS                     0x0D55
  #define GL_DEPTH_BITS                     0x0D56
  #define GL_STENCIL_BITS                   0x0D57
  #define GL_POLYGON_OFFSET_UNITS           0x2A00
  /*      GL_POLYGON_OFFSET_FILL */
  #define GL_POLYGON_OFFSET_FACTOR          0x8038
  #define GL_TEXTURE_BINDING_2D             0x8069
  #define GL_SAMPLE_BUFFERS                 0x80A8
  #define GL_SAMPLES                        0x80A9
  #define GL_SAMPLE_COVERAGE_VALUE          0x80AA
  #define GL_SAMPLE_COVERAGE_INVERT         0x80AB
  
  /* GetTextureParameter */
  /*      GL_TEXTURE_MAG_FILTER */
  /*      GL_TEXTURE_MIN_FILTER */
  /*      GL_TEXTURE_WRAP_S */
  /*      GL_TEXTURE_WRAP_T */
  
  #define GL_NUM_COMPRESSED_TEXTURE_FORMATS 0x86A2
  #define GL_COMPRESSED_TEXTURE_FORMATS     0x86A3
  
  /* HintMode */
  #define GL_DONT_CARE                      0x1100
  #define GL_FASTEST                        0x1101
  #define GL_NICEST                         0x1102
  
  /* HintTarget */
  #define GL_GENERATE_MIPMAP_HINT            0x8192
  
  /* DataType */
  #define GL_BYTE                           0x1400
  #define GL_UNSIGNED_BYTE                  0x1401
  #define GL_SHORT                          0x1402
  #define GL_UNSIGNED_SHORT                 0x1403
  #define GL_INT                            0x1404
  #define GL_UNSIGNED_INT                   0x1405
  #define GL_FLOAT                          0x1406
  #define GL_FIXED                          0x140C
  
  /* PixelFormat */
  #define GL_DEPTH_COMPONENT                0x1902
  #define GL_ALPHA                          0x1906
  #define GL_RGB                            0x1907
  #define GL_RGBA                           0x1908
  #define GL_LUMINANCE                      0x1909
  #define GL_LUMINANCE_ALPHA                0x190A
  
  /* PixelType */
  /*      GL_UNSIGNED_BYTE */
  #define GL_UNSIGNED_SHORT_4_4_4_4         0x8033
  #define GL_UNSIGNED_SHORT_5_5_5_1         0x8034
  #define GL_UNSIGNED_SHORT_5_6_5           0x8363
  
  /* Shaders */
  #define GL_FRAGMENT_SHADER                  0x8B30
  #define GL_VERTEX_SHADER                    0x8B31
  #define GL_MAX_VERTEX_ATTRIBS               0x8869
  #define GL_MAX_VERTEX_UNIFORM_VECTORS       0x8DFB
  #define GL_MAX_VARYING_VECTORS              0x8DFC
  #define GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS 0x8B4D
  #define GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS   0x8B4C
  #define GL_MAX_TEXTURE_IMAGE_UNITS          0x8872
  #define GL_MAX_FRAGMENT_UNIFORM_VECTORS     0x8DFD
  #define GL_SHADER_TYPE                      0x8B4F
  #define GL_DELETE_STATUS                    0x8B80
  #define GL_LINK_STATUS                      0x8B82
  #define GL_VALIDATE_STATUS                  0x8B83
  #define GL_ATTACHED_SHADERS                 0x8B85
  #define GL_ACTIVE_UNIFORMS                  0x8B86
  #define GL_ACTIVE_UNIFORM_MAX_LENGTH        0x8B87
  #define GL_ACTIVE_ATTRIBUTES                0x8B89
  #define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH      0x8B8A
  #define GL_SHADING_LANGUAGE_VERSION         0x8B8C
  #define GL_CURRENT_PROGRAM                  0x8B8D
  
  /* StencilFunction */
  #define GL_NEVER                          0x0200
  #define GL_LESS                           0x0201
  #define GL_EQUAL                          0x0202
  #define GL_LEQUAL                         0x0203
  #define GL_GREATER                        0x0204
  #define GL_NOTEQUAL                       0x0205
  #define GL_GEQUAL                         0x0206
  #define GL_ALWAYS                         0x0207
  
  /* StencilOp */
  /*      GL_ZERO */
  #define GL_KEEP                           0x1E00
  #define GL_REPLACE                        0x1E01
  #define GL_INCR                           0x1E02
  #define GL_DECR                           0x1E03
  #define GL_INVERT                         0x150A
  #define GL_INCR_WRAP                      0x8507
  #define GL_DECR_WRAP                      0x8508
  
  /* StringName */
  #define GL_VENDOR                         0x1F00
  #define GL_RENDERER                       0x1F01
  #define GL_VERSION                        0x1F02
  #define GL_EXTENSIONS                     0x1F03
  
  /* TextureMagFilter */
  #define GL_NEAREST                        0x2600
  #define GL_LINEAR                         0x2601
  
  /* TextureMinFilter */
  /*      GL_NEAREST */
  /*      GL_LINEAR */
  #define GL_NEAREST_MIPMAP_NEAREST         0x2700
  #define GL_LINEAR_MIPMAP_NEAREST          0x2701
  #define GL_NEAREST_MIPMAP_LINEAR          0x2702
  #define GL_LINEAR_MIPMAP_LINEAR           0x2703
  
  /* TextureParameterName */
  #define GL_TEXTURE_MAG_FILTER             0x2800
  #define GL_TEXTURE_MIN_FILTER             0x2801
  #define GL_TEXTURE_WRAP_S                 0x2802
  #define GL_TEXTURE_WRAP_T                 0x2803
  
  /* TextureTarget */
  /*      GL_TEXTURE_2D */
  #define GL_TEXTURE                        0x1702
  
  #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_MAX_CUBE_MAP_TEXTURE_SIZE      0x851C
  
  /* TextureUnit */
  #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
  
  /* TextureWrapMode */
  #define GL_REPEAT                         0x2901
  #define GL_CLAMP_TO_EDGE                  0x812F
  #define GL_MIRRORED_REPEAT                0x8370
  
  /* Uniform Types */
  #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_2D                     0x8B5E
  #define GL_SAMPLER_CUBE                   0x8B60
  
  /* Vertex Arrays */
  #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_VERTEX_ATTRIB_ARRAY_NORMALIZED     0x886A
  #define GL_VERTEX_ATTRIB_ARRAY_POINTER        0x8645
  #define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING 0x889F
  
  /* Read Format */
  #define GL_IMPLEMENTATION_COLOR_READ_TYPE   0x8B9A
  #define GL_IMPLEMENTATION_COLOR_READ_FORMAT 0x8B9B
  
  /* Shader Source */
  #define GL_COMPILE_STATUS                 0x8B81
  #define GL_INFO_LOG_LENGTH                0x8B84
  #define GL_SHADER_SOURCE_LENGTH           0x8B88
  #define GL_SHADER_COMPILER                0x8DFA
  
  /* Shader Binary */
  #define GL_SHADER_BINARY_FORMATS          0x8DF8
  #define GL_NUM_SHADER_BINARY_FORMATS      0x8DF9
  
  /* Shader Precision-Specified Types */
  #define GL_LOW_FLOAT                      0x8DF0
  #define GL_MEDIUM_FLOAT                   0x8DF1
  #define GL_HIGH_FLOAT                     0x8DF2
  #define GL_LOW_INT                        0x8DF3
  #define GL_MEDIUM_INT                     0x8DF4
  #define GL_HIGH_INT                       0x8DF5
  
  /* Framebuffer Object. */
  #define GL_FRAMEBUFFER                    0x8D40
  #define GL_RENDERBUFFER                   0x8D41
  
  #define GL_RGBA4                          0x8056
  #define GL_RGB5_A1                        0x8057
  #define GL_RGB565                         0x8D62
  #define GL_DEPTH_COMPONENT16              0x81A5
  #define GL_STENCIL_INDEX8                 0x8D48
  
  #define GL_RENDERBUFFER_WIDTH             0x8D42
  #define GL_RENDERBUFFER_HEIGHT            0x8D43
  #define GL_RENDERBUFFER_INTERNAL_FORMAT   0x8D44
  #define GL_RENDERBUFFER_RED_SIZE          0x8D50
  #define GL_RENDERBUFFER_GREEN_SIZE        0x8D51
  #define GL_RENDERBUFFER_BLUE_SIZE         0x8D52
  #define GL_RENDERBUFFER_ALPHA_SIZE        0x8D53
  #define GL_RENDERBUFFER_DEPTH_SIZE        0x8D54
  #define GL_RENDERBUFFER_STENCIL_SIZE      0x8D55
  
  #define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE           0x8CD0
  #define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME           0x8CD1
  #define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL         0x8CD2
  #define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE 0x8CD3
  
  #define GL_COLOR_ATTACHMENT0              0x8CE0
  #define GL_DEPTH_ATTACHMENT               0x8D00
  #define GL_STENCIL_ATTACHMENT             0x8D20
  
  #define GL_NONE                           0
  
  #define GL_FRAMEBUFFER_COMPLETE                      0x8CD5
  #define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT         0x8CD6
  #define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7
  #define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS         0x8CD9
  #define GL_FRAMEBUFFER_UNSUPPORTED                   0x8CDD
  
  #define GL_FRAMEBUFFER_BINDING            0x8CA6
  #define GL_RENDERBUFFER_BINDING           0x8CA7
  #define GL_MAX_RENDERBUFFER_SIZE          0x84E8
  
  #define GL_INVALID_FRAMEBUFFER_OPERATION  0x0506
  
  /*-------------------------------------------------------------------------
   * GL core functions.
   *-----------------------------------------------------------------------*/
  
  GL_APICALL void         GL_APIENTRY glActiveTexture (GLenum texture);
  GL_APICALL void         GL_APIENTRY glAttachShader (GLuint program,
          GLuint shader);
  GL_APICALL void         GL_APIENTRY glBindAttribLocation (GLuint program,
          GLuint index, const GLchar* name);
  GL_APICALL void         GL_APIENTRY glBindBuffer (GLenum target, GLuint buffer);
  GL_APICALL void         GL_APIENTRY glBindFramebuffer (GLenum target,
          GLuint framebuffer);
  GL_APICALL void         GL_APIENTRY glBindRenderbuffer (GLenum target,
          GLuint renderbuffer);
  GL_APICALL void         GL_APIENTRY glBindTexture (GLenum target,
          GLuint texture);
  GL_APICALL void         GL_APIENTRY glBlendColor (GLclampf red, GLclampf green,
                                                    GLclampf blue, GLclampf alpha);
  GL_APICALL void         GL_APIENTRY glBlendEquation ( GLenum mode );
  GL_APICALL void         GL_APIENTRY glBlendEquationSeparate (GLenum modeRGB,
          GLenum modeAlpha);
  GL_APICALL void         GL_APIENTRY glBlendFunc (GLenum sfactor,
                                                   GLenum dfactor);
  GL_APICALL void         GL_APIENTRY glBlendFuncSeparate (GLenum srcRGB,
          GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
  GL_APICALL void         GL_APIENTRY glBufferData (GLenum target,
                                                    GLsizeiptr size, const GLvoid* data, GLenum usage);
  GL_APICALL void         GL_APIENTRY glBufferSubData (GLenum target,
          GLintptr offset, GLsizeiptr size, const GLvoid* data);
  GL_APICALL GLenum       GL_APIENTRY glCheckFramebufferStatus (GLenum target);
  GL_APICALL void         GL_APIENTRY glClear (GLbitfield mask);
  GL_APICALL void         GL_APIENTRY glClearColor (GLclampf red, GLclampf green,
                                                    GLclampf blue, GLclampf alpha);
  GL_APICALL void         GL_APIENTRY glClearDepthf (GLclampf depth);
  GL_APICALL void         GL_APIENTRY glClearStencil (GLint s);
  GL_APICALL void         GL_APIENTRY glColorMask (GLboolean red, GLboolean green,
                                                   GLboolean blue, GLboolean alpha);
  GL_APICALL void         GL_APIENTRY glCompileShader (GLuint shader);
  GL_APICALL void         GL_APIENTRY glCompressedTexImage2D (GLenum target,
          GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border,
          GLsizei imageSize, const GLvoid* data);
  GL_APICALL void         GL_APIENTRY glCompressedTexSubImage2D (GLenum target,
          GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
          GLenum format, GLsizei imageSize, const GLvoid* data);
  GL_APICALL void         GL_APIENTRY glCopyTexImage2D (GLenum target,
          GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width,
          GLsizei height, GLint border);
  GL_APICALL void         GL_APIENTRY glCopyTexSubImage2D (GLenum target,
          GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width,
          GLsizei height);
  GL_APICALL GLuint       GL_APIENTRY glCreateProgram (void);
  GL_APICALL GLuint       GL_APIENTRY glCreateShader (GLenum type);
  GL_APICALL void         GL_APIENTRY glCullFace (GLenum mode);
  GL_APICALL void         GL_APIENTRY glDeleteBuffers (GLsizei n,
          const GLuint* buffers);
  GL_APICALL void         GL_APIENTRY glDeleteFramebuffers (GLsizei n,
          const GLuint* framebuffers);
  GL_APICALL void         GL_APIENTRY glDeleteProgram (GLuint program);
  GL_APICALL void         GL_APIENTRY glDeleteRenderbuffers (GLsizei n,
          const GLuint* renderbuffers);
  GL_APICALL void         GL_APIENTRY glDeleteShader (GLuint shader);
  GL_APICALL void         GL_APIENTRY glDeleteTextures (GLsizei n,
          const GLuint* textures);
  GL_APICALL void         GL_APIENTRY glDepthFunc (GLenum func);
  GL_APICALL void         GL_APIENTRY glDepthMask (GLboolean flag);
  GL_APICALL void         GL_APIENTRY glDepthRangef (GLclampf zNear,
          GLclampf zFar);
  GL_APICALL void         GL_APIENTRY glDetachShader (GLuint program,
          GLuint shader);
  GL_APICALL void         GL_APIENTRY glDisable (GLenum cap);
  GL_APICALL void         GL_APIENTRY glDisableVertexAttribArray (GLuint index);
  GL_APICALL void         GL_APIENTRY glDrawArrays (GLenum mode, GLint first,
                                                    GLsizei count);
  GL_APICALL void         GL_APIENTRY glDrawElements (GLenum mode, GLsizei count,
          GLenum type, const GLvoid* indices);
  GL_APICALL void         GL_APIENTRY glEnable (GLenum cap);
  GL_APICALL void         GL_APIENTRY glEnableVertexAttribArray (GLuint index);
  GL_APICALL void         GL_APIENTRY glFinish (void);
  GL_APICALL void         GL_APIENTRY glFlush (void);
  GL_APICALL void         GL_APIENTRY glFramebufferRenderbuffer (GLenum target,
          GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
  GL_APICALL void         GL_APIENTRY glFramebufferTexture2D (GLenum target,
          GLenum attachment, GLenum textarget, GLuint texture, GLint level);
  GL_APICALL void         GL_APIENTRY glFrontFace (GLenum mode);
  GL_APICALL void         GL_APIENTRY glGenBuffers (GLsizei n, GLuint* buffers);
  GL_APICALL void         GL_APIENTRY glGenerateMipmap (GLenum target);
  GL_APICALL void         GL_APIENTRY glGenFramebuffers (GLsizei n,
          GLuint* framebuffers);
  GL_APICALL void         GL_APIENTRY glGenRenderbuffers (GLsizei n,
          GLuint* renderbuffers);
  GL_APICALL void         GL_APIENTRY glGenTextures (GLsizei n, GLuint* textures);
  GL_APICALL void         GL_APIENTRY glGetActiveAttrib (GLuint program,
          GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type,
          GLchar* name);
  GL_APICALL void         GL_APIENTRY glGetActiveUniform (GLuint program,
          GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type,
          GLchar* name);
  GL_APICALL void         GL_APIENTRY glGetAttachedShaders (GLuint program,
          GLsizei maxcount, GLsizei* count, GLuint* shaders);
  GL_APICALL int          GL_APIENTRY glGetAttribLocation (GLuint program,
          const GLchar* name);
  GL_APICALL void         GL_APIENTRY glGetBooleanv (GLenum pname,
          GLboolean* params);
  GL_APICALL void         GL_APIENTRY glGetBufferParameteriv (GLenum target,
          GLenum pname, GLint* params);
  GL_APICALL GLenum       GL_APIENTRY glGetError (void);
  GL_APICALL void         GL_APIENTRY glGetFloatv (GLenum pname, GLfloat* params);
  GL_APICALL void         GL_APIENTRY glGetFramebufferAttachmentParameteriv (
      GLenum target, GLenum attachment, GLenum pname, GLint* params);
  GL_APICALL void         GL_APIENTRY glGetIntegerv (GLenum pname, GLint* params);
  GL_APICALL void         GL_APIENTRY glGetProgramiv (GLuint program,
          GLenum pname, GLint* params);
  GL_APICALL void         GL_APIENTRY glGetProgramInfoLog (GLuint program,
          GLsizei bufsize, GLsizei* length, GLchar* infolog);
  GL_APICALL void         GL_APIENTRY glGetRenderbufferParameteriv (GLenum target,
          GLenum pname, GLint* params);
  GL_APICALL void         GL_APIENTRY glGetShaderiv (GLuint shader, GLenum pname,
          GLint* params);
  GL_APICALL void         GL_APIENTRY glGetShaderInfoLog (GLuint shader,
          GLsizei bufsize, GLsizei* length, GLchar* infolog);
  GL_APICALL void         GL_APIENTRY glGetShaderPrecisionFormat (
      GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision);
  GL_APICALL void         GL_APIENTRY glGetShaderSource (GLuint shader,
          GLsizei bufsize, GLsizei* length, GLchar* source);
  GL_APICALL const GLubyte* GL_APIENTRY glGetString (GLenum name);
  GL_APICALL void         GL_APIENTRY glGetTexParameterfv (GLenum target,
          GLenum pname, GLfloat* params);
  GL_APICALL void         GL_APIENTRY glGetTexParameteriv (GLenum target,
          GLenum pname, GLint* params);
  GL_APICALL void         GL_APIENTRY glGetUniformfv (GLuint program,
          GLint location, GLfloat* params);
  GL_APICALL void         GL_APIENTRY glGetUniformiv (GLuint program,
          GLint location, GLint* params);
  GL_APICALL int          GL_APIENTRY glGetUniformLocation (GLuint program,
          const GLchar* name);
  GL_APICALL void         GL_APIENTRY glGetVertexAttribfv (GLuint index,
          GLenum pname, GLfloat* params);
  GL_APICALL void         GL_APIENTRY glGetVertexAttribiv (GLuint index,
          GLenum pname, GLint* params);
  GL_APICALL void         GL_APIENTRY glGetVertexAttribPointerv (GLuint index,
          GLenum pname, GLvoid** pointer);
  GL_APICALL void         GL_APIENTRY glHint (GLenum target, GLenum mode);
  GL_APICALL GLboolean    GL_APIENTRY glIsBuffer (GLuint buffer);
  GL_APICALL GLboolean    GL_APIENTRY glIsEnabled (GLenum cap);
  GL_APICALL GLboolean    GL_APIENTRY glIsFramebuffer (GLuint framebuffer);
  GL_APICALL GLboolean    GL_APIENTRY glIsProgram (GLuint program);
  GL_APICALL GLboolean    GL_APIENTRY glIsRenderbuffer (GLuint renderbuffer);
  GL_APICALL GLboolean    GL_APIENTRY glIsShader (GLuint shader);
  GL_APICALL GLboolean    GL_APIENTRY glIsTexture (GLuint texture);
  GL_APICALL void         GL_APIENTRY glLineWidth (GLfloat width);
  GL_APICALL void         GL_APIENTRY glLinkProgram (GLuint program);
  GL_APICALL void         GL_APIENTRY glPixelStorei (GLenum pname, GLint param);
  GL_APICALL void         GL_APIENTRY glPolygonOffset (GLfloat factor,
          GLfloat units);
  GL_APICALL void         GL_APIENTRY glReadPixels (GLint x, GLint y,
                                                    GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid* pixels);
  GL_APICALL void         GL_APIENTRY glReleaseShaderCompiler (void);
  GL_APICALL void         GL_APIENTRY glRenderbufferStorage (GLenum target,
          GLenum internalformat, GLsizei width, GLsizei height);
  GL_APICALL void         GL_APIENTRY glSampleCoverage (GLclampf value,
          GLboolean invert);
  GL_APICALL void         GL_APIENTRY glScissor (GLint x, GLint y, GLsizei width,
                                                 GLsizei height);
  GL_APICALL void         GL_APIENTRY glShaderBinary (GLsizei n,
          const GLuint* shaders, GLenum binaryformat, const GLvoid* binary,
          GLsizei length);
  GL_APICALL void         GL_APIENTRY glShaderSource (GLuint shader,
          GLsizei count, const GLchar* const* string, const GLint* length);
  GL_APICALL void         GL_APIENTRY glStencilFunc (GLenum func, GLint ref,
          GLuint mask);
  GL_APICALL void         GL_APIENTRY glStencilFuncSeparate (GLenum face,
          GLenum func, GLint ref, GLuint mask);
  GL_APICALL void         GL_APIENTRY glStencilMask (GLuint mask);
  GL_APICALL void         GL_APIENTRY glStencilMaskSeparate (GLenum face,
          GLuint mask);
  GL_APICALL void         GL_APIENTRY glStencilOp (GLenum fail, GLenum zfail,
                                                   GLenum zpass);
  GL_APICALL void         GL_APIENTRY glStencilOpSeparate (GLenum face,
          GLenum fail, GLenum zfail, GLenum zpass);
  GL_APICALL void         GL_APIENTRY glTexImage2D (GLenum target, GLint level,
                                                    GLint internalformat, GLsizei width, GLsizei height, GLint border,
                                                    GLenum format, GLenum type, const GLvoid* pixels);
  GL_APICALL void         GL_APIENTRY glTexParameterf (GLenum target,
          GLenum pname, GLfloat param);
  GL_APICALL void         GL_APIENTRY glTexParameterfv (GLenum target,
          GLenum pname, const GLfloat* params);
  GL_APICALL void         GL_APIENTRY glTexParameteri (GLenum target,
          GLenum pname, GLint param);
  GL_APICALL void         GL_APIENTRY glTexParameteriv (GLenum target,
          GLenum pname, const GLint* params);
  GL_APICALL void         GL_APIENTRY glTexSubImage2D (GLenum target, GLint level,
          GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format,
          GLenum type, const GLvoid* pixels);
  GL_APICALL void         GL_APIENTRY glUniform1f (GLint location, GLfloat x);
  GL_APICALL void         GL_APIENTRY glUniform1fv (GLint location, GLsizei count,
                                                    const GLfloat* v);
  GL_APICALL void         GL_APIENTRY glUniform1i (GLint location, GLint x);
  GL_APICALL void         GL_APIENTRY glUniform1iv (GLint location, GLsizei count,
                                                    const GLint* v);
  GL_APICALL void         GL_APIENTRY glUniform2f (GLint location, GLfloat x,
                                                   GLfloat y);
  GL_APICALL void         GL_APIENTRY glUniform2fv (GLint location, GLsizei count,
                                                    const GLfloat* v);
  GL_APICALL void         GL_APIENTRY glUniform2i (GLint location, GLint x,
                                                   GLint y);
  GL_APICALL void         GL_APIENTRY glUniform2iv (GLint location, GLsizei count,
                                                    const GLint* v);
  GL_APICALL void         GL_APIENTRY glUniform3f (GLint location, GLfloat x,
                                                   GLfloat y, GLfloat z);
  GL_APICALL void         GL_APIENTRY glUniform3fv (GLint location, GLsizei count,
                                                    const GLfloat* v);
  GL_APICALL void         GL_APIENTRY glUniform3i (GLint location, GLint x,
                                                   GLint y, GLint z);
  GL_APICALL void         GL_APIENTRY glUniform3iv (GLint location, GLsizei count,
                                                    const GLint* v);
  GL_APICALL void         GL_APIENTRY glUniform4f (GLint location, GLfloat x,
                                                   GLfloat y, GLfloat z, GLfloat w);
  GL_APICALL void         GL_APIENTRY glUniform4fv (GLint location, GLsizei count,
                                                    const GLfloat* v);
  GL_APICALL void         GL_APIENTRY glUniform4i (GLint location, GLint x,
                                                   GLint y, GLint z, GLint w);
  GL_APICALL void         GL_APIENTRY glUniform4iv (GLint location, GLsizei count,
                                                    const GLint* v);
  GL_APICALL void         GL_APIENTRY glUniformMatrix2fv (GLint location,
          GLsizei count, GLboolean transpose, const GLfloat* value);
  GL_APICALL void         GL_APIENTRY glUniformMatrix3fv (GLint location,
          GLsizei count, GLboolean transpose, const GLfloat* value);
  GL_APICALL void         GL_APIENTRY glUniformMatrix4fv (GLint location,
          GLsizei count, GLboolean transpose, const GLfloat* value);
  GL_APICALL void         GL_APIENTRY glUseProgram (GLuint program);
  GL_APICALL void         GL_APIENTRY glValidateProgram (GLuint program);
  GL_APICALL void         GL_APIENTRY glVertexAttrib1f (GLuint indx, GLfloat x);
  GL_APICALL void         GL_APIENTRY glVertexAttrib1fv (GLuint indx,
          const GLfloat* values);
  GL_APICALL void         GL_APIENTRY glVertexAttrib2f (GLuint indx, GLfloat x,
          GLfloat y);
  GL_APICALL void         GL_APIENTRY glVertexAttrib2fv (GLuint indx,
          const GLfloat* values);
  GL_APICALL void         GL_APIENTRY glVertexAttrib3f (GLuint indx, GLfloat x,
          GLfloat y, GLfloat z);
  GL_APICALL void         GL_APIENTRY glVertexAttrib3fv (GLuint indx,
          const GLfloat* values);
  GL_APICALL void         GL_APIENTRY glVertexAttrib4f (GLuint indx, GLfloat x,
          GLfloat y, GLfloat z, GLfloat w);
  GL_APICALL void         GL_APIENTRY glVertexAttrib4fv (GLuint indx,
          const GLfloat* values);
  GL_APICALL void         GL_APIENTRY glVertexAttribPointer (GLuint indx,
          GLint size, GLenum type, GLboolean normalized, GLsizei stride,
          const GLvoid* ptr);
  GL_APICALL void         GL_APIENTRY glViewport (GLint x, GLint y, GLsizei width,
                                                  GLsizei height);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* __gl2_h_ */
  
  
  #ifndef __gl2ext_h_
  #define __gl2ext_h_
  
  /* $Revision: 19436 $ on $Date:: 2012-10-10 10:37:04 -0700 #$ */
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /*
   * This document is licensed under the SGI Free Software B License Version
   * 2.0. For details, see http://oss.sgi.com/projects/FreeB/ .
   */
  
  #ifndef GL_APIENTRYP
  #   define GL_APIENTRYP GL_APIENTRY*
  #endif
  
  /*------------------------------------------------------------------------*
   * OES extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_OES_compressed_ETC1_RGB8_texture */
  #ifndef GL_OES_compressed_ETC1_RGB8_texture
  #define GL_ETC1_RGB8_OES                                        0x8D64
  #endif
  
  /* GL_OES_compressed_paletted_texture */
  #ifndef GL_OES_compressed_paletted_texture
  #define GL_PALETTE4_RGB8_OES                                    0x8B90
  #define GL_PALETTE4_RGBA8_OES                                   0x8B91
  #define GL_PALETTE4_R5_G6_B5_OES                                0x8B92
  #define GL_PALETTE4_RGBA4_OES                                   0x8B93
  #define GL_PALETTE4_RGB5_A1_OES                                 0x8B94
  #define GL_PALETTE8_RGB8_OES                                    0x8B95
  #define GL_PALETTE8_RGBA8_OES                                   0x8B96
  #define GL_PALETTE8_R5_G6_B5_OES                                0x8B97
  #define GL_PALETTE8_RGBA4_OES                                   0x8B98
  #define GL_PALETTE8_RGB5_A1_OES                                 0x8B99
  #endif
  
  /* GL_OES_depth24 */
  #ifndef GL_OES_depth24
  #define GL_DEPTH_COMPONENT24_OES                                0x81A6
  #endif
  
  /* GL_OES_depth32 */
  #ifndef GL_OES_depth32
  #define GL_DEPTH_COMPONENT32_OES                                0x81A7
  #endif
  
  /* GL_OES_depth_texture */
  /* No new tokens introduced by this extension. */
  
  /* GL_OES_EGL_image */
  #ifndef GL_OES_EGL_image
  typedef void* GLeglImageOES;
  #endif
  
  /* GL_OES_EGL_image_external */
  #ifndef GL_OES_EGL_image_external
  /* GLeglImageOES defined in GL_OES_EGL_image already. */
  #define GL_TEXTURE_EXTERNAL_OES                                 0x8D65
  #define GL_SAMPLER_EXTERNAL_OES                                 0x8D66
  #define GL_TEXTURE_BINDING_EXTERNAL_OES                         0x8D67
  #define GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES                     0x8D68
  #endif
  
  /* GL_OES_element_index_uint */
  #ifndef GL_OES_element_index_uint
  #define GL_UNSIGNED_INT                                         0x1405
  #endif
  
  /* GL_OES_get_program_binary */
  #ifndef GL_OES_get_program_binary
  #define GL_PROGRAM_BINARY_LENGTH_OES                            0x8741
  #define GL_NUM_PROGRAM_BINARY_FORMATS_OES                       0x87FE
  #define GL_PROGRAM_BINARY_FORMATS_OES                           0x87FF
  #endif
  
  /* GL_OES_mapbuffer */
  #ifndef GL_OES_mapbuffer
  #define GL_WRITE_ONLY_OES                                       0x88B9
  #define GL_BUFFER_ACCESS_OES                                    0x88BB
  #define GL_BUFFER_MAPPED_OES                                    0x88BC
  #define GL_BUFFER_MAP_POINTER_OES                               0x88BD
  #endif
  
  /* GL_OES_packed_depth_stencil */
  #ifndef GL_OES_packed_depth_stencil
  #define GL_DEPTH_STENCIL_OES                                    0x84F9
  #define GL_UNSIGNED_INT_24_8_OES                                0x84FA
  #define GL_DEPTH24_STENCIL8_OES                                 0x88F0
  #endif
  
  /* GL_OES_required_internalformat */
  #ifndef GL_OES_required_internalformat
  #define GL_ALPHA8_OES                                           0x803C
  #define GL_DEPTH_COMPONENT16_OES                                0x81A5
  /* reuse GL_DEPTH_COMPONENT24_OES */
  /* reuse GL_DEPTH24_STENCIL8_OES */
  /* reuse GL_DEPTH_COMPONENT32_OES */
  #define GL_LUMINANCE4_ALPHA4_OES                                0x8043
  #define GL_LUMINANCE8_ALPHA8_OES                                0x8045
  #define GL_LUMINANCE8_OES                                       0x8040
  #define GL_RGBA4_OES                                            0x8056
  #define GL_RGB5_A1_OES                                          0x8057
  #define GL_RGB565_OES                                           0x8D62
  /* reuse GL_RGB8_OES */
  /* reuse GL_RGBA8_OES */
  /* reuse GL_RGB10_EXT */
  /* reuse GL_RGB10_A2_EXT */
  #endif
  
  /* GL_OES_rgb8_rgba8 */
  #ifndef GL_OES_rgb8_rgba8
  #define GL_RGB8_OES                                             0x8051
  #define GL_RGBA8_OES                                            0x8058
  #endif
  
  /* GL_OES_standard_derivatives */
  #ifndef GL_OES_standard_derivatives
  #define GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES                  0x8B8B
  #endif
  
  /* GL_OES_stencil1 */
  #ifndef GL_OES_stencil1
  #define GL_STENCIL_INDEX1_OES                                   0x8D46
  #endif
  
  /* GL_OES_stencil4 */
  #ifndef GL_OES_stencil4
  #define GL_STENCIL_INDEX4_OES                                   0x8D47
  #endif
  
  #ifndef GL_OES_surfaceless_context
  #define GL_FRAMEBUFFER_UNDEFINED_OES                            0x8219
  #endif
  
  /* GL_OES_texture_3D */
  #ifndef GL_OES_texture_3D
  #define GL_TEXTURE_WRAP_R_OES                                   0x8072
  #define GL_TEXTURE_3D_OES                                       0x806F
  #define GL_TEXTURE_BINDING_3D_OES                               0x806A
  #define GL_MAX_3D_TEXTURE_SIZE_OES                              0x8073
  #define GL_SAMPLER_3D_OES                                       0x8B5F
  #define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_OES        0x8CD4
  #endif
  
  /* GL_OES_texture_float */
  /* No new tokens introduced by this extension. */
  
  /* GL_OES_texture_float_linear */
  /* No new tokens introduced by this extension. */
  
  /* GL_OES_texture_half_float */
  #ifndef GL_OES_texture_half_float
  #define GL_HALF_FLOAT_OES                                       0x8D61
  #endif
  
  /* GL_OES_texture_half_float_linear */
  /* No new tokens introduced by this extension. */
  
  /* GL_OES_texture_npot */
  /* No new tokens introduced by this extension. */
  
  /* GL_OES_vertex_array_object */
  #ifndef GL_OES_vertex_array_object
  #define GL_VERTEX_ARRAY_BINDING_OES                             0x85B5
  #endif
  
  /* GL_OES_vertex_half_float */
  /* GL_HALF_FLOAT_OES defined in GL_OES_texture_half_float already. */
  
  /* GL_OES_vertex_type_10_10_10_2 */
  #ifndef GL_OES_vertex_type_10_10_10_2
  #define GL_UNSIGNED_INT_10_10_10_2_OES                          0x8DF6
  #define GL_INT_10_10_10_2_OES                                   0x8DF7
  #endif
  
  /*------------------------------------------------------------------------*
   * KHR extension tokens
   *------------------------------------------------------------------------*/
  
  #ifndef GL_KHR_debug
  typedef void (GL_APIENTRYP GLDEBUGPROC) (GLenum source, GLenum type, GLuint id,
                                           GLenum severity, GLsizei length, const GLchar* message, GLvoid* userParam);
  #define GL_DEBUG_OUTPUT_SYNCHRONOUS                             0x8242
  #define GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH                     0x8243
  #define GL_DEBUG_CALLBACK_FUNCTION                              0x8244
  #define GL_DEBUG_CALLBACK_USER_PARAM                            0x8245
  #define GL_DEBUG_SOURCE_API                                     0x8246
  #define GL_DEBUG_SOURCE_WINDOW_SYSTEM                           0x8247
  #define GL_DEBUG_SOURCE_SHADER_COMPILER                         0x8248
  #define GL_DEBUG_SOURCE_THIRD_PARTY                             0x8249
  #define GL_DEBUG_SOURCE_APPLICATION                             0x824A
  #define GL_DEBUG_SOURCE_OTHER                                   0x824B
  #define GL_DEBUG_TYPE_ERROR                                     0x824C
  #define GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR                       0x824D
  #define GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR                        0x824E
  #define GL_DEBUG_TYPE_PORTABILITY                               0x824F
  #define GL_DEBUG_TYPE_PERFORMANCE                               0x8250
  #define GL_DEBUG_TYPE_OTHER                                     0x8251
  #define GL_DEBUG_TYPE_MARKER                                    0x8268
  #define GL_DEBUG_TYPE_PUSH_GROUP                                0x8269
  #define GL_DEBUG_TYPE_POP_GROUP                                 0x826A
  #define GL_DEBUG_SEVERITY_NOTIFICATION                          0x826B
  #define GL_MAX_DEBUG_GROUP_STACK_DEPTH                          0x826C
  #define GL_DEBUG_GROUP_STACK_DEPTH                              0x826D
  #define GL_BUFFER                                               0x82E0
  #define GL_SHADER                                               0x82E1
  #define GL_PROGRAM                                              0x82E2
  #define GL_QUERY                                                0x82E3
  /* PROGRAM_PIPELINE only in GL */
  #define GL_SAMPLER                                              0x82E6
  /* DISPLAY_LIST only in GL */
  #define GL_MAX_LABEL_LENGTH                                     0x82E8
  #define GL_MAX_DEBUG_MESSAGE_LENGTH                             0x9143
  #define GL_MAX_DEBUG_LOGGED_MESSAGES                            0x9144
  #define GL_DEBUG_LOGGED_MESSAGES                                0x9145
  #define GL_DEBUG_SEVERITY_HIGH                                  0x9146
  #define GL_DEBUG_SEVERITY_MEDIUM                                0x9147
  #define GL_DEBUG_SEVERITY_LOW                                   0x9148
  #define GL_DEBUG_OUTPUT                                         0x92E0
  #define GL_CONTEXT_FLAG_DEBUG_BIT                               0x00000002
  #define GL_STACK_OVERFLOW                                       0x0503
  #define GL_STACK_UNDERFLOW                                      0x0504
  #endif
  
  #ifndef GL_KHR_texture_compression_astc_ldr
  #define GL_COMPRESSED_RGBA_ASTC_4x4_KHR                         0x93B0
  #define GL_COMPRESSED_RGBA_ASTC_5x4_KHR                         0x93B1
  #define GL_COMPRESSED_RGBA_ASTC_5x5_KHR                         0x93B2
  #define GL_COMPRESSED_RGBA_ASTC_6x5_KHR                         0x93B3
  #define GL_COMPRESSED_RGBA_ASTC_6x6_KHR                         0x93B4
  #define GL_COMPRESSED_RGBA_ASTC_8x5_KHR                         0x93B5
  #define GL_COMPRESSED_RGBA_ASTC_8x6_KHR                         0x93B6
  #define GL_COMPRESSED_RGBA_ASTC_8x8_KHR                         0x93B7
  #define GL_COMPRESSED_RGBA_ASTC_10x5_KHR                        0x93B8
  #define GL_COMPRESSED_RGBA_ASTC_10x6_KHR                        0x93B9
  #define GL_COMPRESSED_RGBA_ASTC_10x8_KHR                        0x93BA
  #define GL_COMPRESSED_RGBA_ASTC_10x10_KHR                       0x93BB
  #define GL_COMPRESSED_RGBA_ASTC_12x10_KHR                       0x93BC
  #define GL_COMPRESSED_RGBA_ASTC_12x12_KHR                       0x93BD
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR                 0x93D0
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR                 0x93D1
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR                 0x93D2
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR                 0x93D3
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR                 0x93D4
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR                 0x93D5
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR                 0x93D6
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR                 0x93D7
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR                0x93D8
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR                0x93D9
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR                0x93DA
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR               0x93DB
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR               0x93DC
  #define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR               0x93DD
  #endif
  
  /*------------------------------------------------------------------------*
   * AMD extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_AMD_compressed_3DC_texture */
  #ifndef GL_AMD_compressed_3DC_texture
  #define GL_3DC_X_AMD                                            0x87F9
  #define GL_3DC_XY_AMD                                           0x87FA
  #endif
  
  /* GL_AMD_compressed_ATC_texture */
  #ifndef GL_AMD_compressed_ATC_texture
  #define GL_ATC_RGB_AMD                                          0x8C92
  #define GL_ATC_RGBA_EXPLICIT_ALPHA_AMD                          0x8C93
  #define GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD                      0x87EE
  #endif
  
  /* GL_AMD_performance_monitor */
  #ifndef GL_AMD_performance_monitor
  #define GL_COUNTER_TYPE_AMD                                     0x8BC0
  #define GL_COUNTER_RANGE_AMD                                    0x8BC1
  #define GL_UNSIGNED_INT64_AMD                                   0x8BC2
  #define GL_PERCENTAGE_AMD                                       0x8BC3
  #define GL_PERFMON_RESULT_AVAILABLE_AMD                         0x8BC4
  #define GL_PERFMON_RESULT_SIZE_AMD                              0x8BC5
  #define GL_PERFMON_RESULT_AMD                                   0x8BC6
  #endif
  
  /* GL_AMD_program_binary_Z400 */
  #ifndef GL_AMD_program_binary_Z400
  #define GL_Z400_BINARY_AMD                                      0x8740
  #endif
  
  /*------------------------------------------------------------------------*
   * ANGLE extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_ANGLE_framebuffer_blit */
  #ifndef GL_ANGLE_framebuffer_blit
  #define GL_READ_FRAMEBUFFER_ANGLE                               0x8CA8
  #define GL_DRAW_FRAMEBUFFER_ANGLE                               0x8CA9
  #define GL_DRAW_FRAMEBUFFER_BINDING_ANGLE                       0x8CA6
  #define GL_READ_FRAMEBUFFER_BINDING_ANGLE                       0x8CAA
  #endif
  
  /* GL_ANGLE_framebuffer_multisample */
  #ifndef GL_ANGLE_framebuffer_multisample
  #define GL_RENDERBUFFER_SAMPLES_ANGLE                           0x8CAB
  #define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_ANGLE             0x8D56
  #define GL_MAX_SAMPLES_ANGLE                                    0x8D57
  #endif
  
  /* GL_ANGLE_instanced_arrays */
  #ifndef GL_ANGLE_instanced_arrays
  #define GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE                    0x88FE
  #endif
  
  /* GL_ANGLE_pack_reverse_row_order */
  #ifndef GL_ANGLE_pack_reverse_row_order
  #define GL_PACK_REVERSE_ROW_ORDER_ANGLE                         0x93A4
  #endif
  
  /* GL_ANGLE_texture_compression_dxt3 */
  #ifndef GL_ANGLE_texture_compression_dxt3
  #define GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE                      0x83F2
  #endif
  
  /* GL_ANGLE_texture_compression_dxt5 */
  #ifndef GL_ANGLE_texture_compression_dxt5
  #define GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE                      0x83F3
  #endif
  
  /* GL_ANGLE_texture_usage */
  #ifndef GL_ANGLE_texture_usage
  #define GL_TEXTURE_USAGE_ANGLE                                  0x93A2
  #define GL_FRAMEBUFFER_ATTACHMENT_ANGLE                         0x93A3
  #endif
  
  /* GL_ANGLE_translated_shader_source */
  #ifndef GL_ANGLE_translated_shader_source
  #define GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE                0x93A0
  #endif
  
  /*------------------------------------------------------------------------*
   * APPLE extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_APPLE_copy_texture_levels */
  /* No new tokens introduced by this extension. */
  
  /* GL_APPLE_framebuffer_multisample */
  #ifndef GL_APPLE_framebuffer_multisample
  #define GL_RENDERBUFFER_SAMPLES_APPLE                           0x8CAB
  #define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_APPLE             0x8D56
  #define GL_MAX_SAMPLES_APPLE                                    0x8D57
  #define GL_READ_FRAMEBUFFER_APPLE                               0x8CA8
  #define GL_DRAW_FRAMEBUFFER_APPLE                               0x8CA9
  #define GL_DRAW_FRAMEBUFFER_BINDING_APPLE                       0x8CA6
  #define GL_READ_FRAMEBUFFER_BINDING_APPLE                       0x8CAA
  #endif
  
  /* GL_APPLE_rgb_422 */
  #ifndef GL_APPLE_rgb_422
  #define GL_RGB_422_APPLE                                        0x8A1F
  #define GL_UNSIGNED_SHORT_8_8_APPLE                             0x85BA
  #define GL_UNSIGNED_SHORT_8_8_REV_APPLE                         0x85BB
  #endif
  
  /* GL_APPLE_sync */
  #ifndef GL_APPLE_sync
  
  #ifndef __gl3_h_
  /* These types are defined with reference to <inttypes.h>
   * in the Apple extension spec, but here we use the Khronos
   * portable types in khrplatform.h, and assume those types
   * are always defined.
   * If any other extensions using these types are defined,
   * the typedefs must move out of this block and be shared.
   */
  typedef khronos_int64_t GLint64;
  typedef khronos_uint64_t GLuint64;
  typedef struct __GLsync* GLsync;
  #endif
  
  #define GL_SYNC_OBJECT_APPLE                                    0x8A53
  #define GL_MAX_SERVER_WAIT_TIMEOUT_APPLE                        0x9111
  #define GL_OBJECT_TYPE_APPLE                                    0x9112
  #define GL_SYNC_CONDITION_APPLE                                 0x9113
  #define GL_SYNC_STATUS_APPLE                                    0x9114
  #define GL_SYNC_FLAGS_APPLE                                     0x9115
  #define GL_SYNC_FENCE_APPLE                                     0x9116
  #define GL_SYNC_GPU_COMMANDS_COMPLETE_APPLE                     0x9117
  #define GL_UNSIGNALED_APPLE                                     0x9118
  #define GL_SIGNALED_APPLE                                       0x9119
  #define GL_ALREADY_SIGNALED_APPLE                               0x911A
  #define GL_TIMEOUT_EXPIRED_APPLE                                0x911B
  #define GL_CONDITION_SATISFIED_APPLE                            0x911C
  #define GL_WAIT_FAILED_APPLE                                    0x911D
  #define GL_SYNC_FLUSH_COMMANDS_BIT_APPLE                        0x00000001
  #define GL_TIMEOUT_IGNORED_APPLE                                0xFFFFFFFFFFFFFFFFull
  #endif
  
  /* GL_APPLE_texture_format_BGRA8888 */
  #ifndef GL_APPLE_texture_format_BGRA8888
  #define GL_BGRA_EXT                                             0x80E1
  #endif
  
  /* GL_APPLE_texture_max_level */
  #ifndef GL_APPLE_texture_max_level
  #define GL_TEXTURE_MAX_LEVEL_APPLE                              0x813D
  #endif
  
  /*------------------------------------------------------------------------*
   * ARM extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_ARM_mali_program_binary */
  #ifndef GL_ARM_mali_program_binary
  #define GL_MALI_PROGRAM_BINARY_ARM                              0x8F61
  #endif
  
  /* GL_ARM_mali_shader_binary */
  #ifndef GL_ARM_mali_shader_binary
  #define GL_MALI_SHADER_BINARY_ARM                               0x8F60
  #endif
  
  /* GL_ARM_rgba8 */
  /* No new tokens introduced by this extension. */
  
  /*------------------------------------------------------------------------*
   * EXT extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_EXT_blend_minmax */
  #ifndef GL_EXT_blend_minmax
  #define GL_MIN_EXT                                              0x8007
  #define GL_MAX_EXT                                              0x8008
  #endif
  
  /* GL_EXT_color_buffer_half_float */
  #ifndef GL_EXT_color_buffer_half_float
  #define GL_RGBA16F_EXT                                          0x881A
  #define GL_RGB16F_EXT                                           0x881B
  #define GL_RG16F_EXT                                            0x822F
  #define GL_R16F_EXT                                             0x822D
  #define GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT            0x8211
  #define GL_UNSIGNED_NORMALIZED_EXT                              0x8C17
  #endif
  
  /* GL_EXT_debug_label */
  #ifndef GL_EXT_debug_label
  #define GL_PROGRAM_PIPELINE_OBJECT_EXT                          0x8A4F
  #define GL_PROGRAM_OBJECT_EXT                                   0x8B40
  #define GL_SHADER_OBJECT_EXT                                    0x8B48
  #define GL_BUFFER_OBJECT_EXT                                    0x9151
  #define GL_QUERY_OBJECT_EXT                                     0x9153
  #define GL_VERTEX_ARRAY_OBJECT_EXT                              0x9154
  #endif
  
  /* GL_EXT_debug_marker */
  /* No new tokens introduced by this extension. */
  
  /* GL_EXT_discard_framebuffer */
  #ifndef GL_EXT_discard_framebuffer
  #define GL_COLOR_EXT                                            0x1800
  #define GL_DEPTH_EXT                                            0x1801
  #define GL_STENCIL_EXT                                          0x1802
  #endif
  
  /* GL_EXT_map_buffer_range */
  #ifndef GL_EXT_map_buffer_range
  #define GL_MAP_READ_BIT_EXT                                     0x0001
  #define GL_MAP_WRITE_BIT_EXT                                    0x0002
  #define GL_MAP_INVALIDATE_RANGE_BIT_EXT                         0x0004
  #define GL_MAP_INVALIDATE_BUFFER_BIT_EXT                        0x0008
  #define GL_MAP_FLUSH_EXPLICIT_BIT_EXT                           0x0010
  #define GL_MAP_UNSYNCHRONIZED_BIT_EXT                           0x0020
  #endif
  
  /* GL_EXT_multisampled_render_to_texture */
  #ifndef GL_EXT_multisampled_render_to_texture
  #define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_SAMPLES_EXT           0x8D6C
  /* reuse values from GL_EXT_framebuffer_multisample (desktop extension) */
  #define GL_RENDERBUFFER_SAMPLES_EXT                             0x8CAB
  #define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT               0x8D56
  #define GL_MAX_SAMPLES_EXT                                      0x8D57
  #endif
  
  /* GL_EXT_multiview_draw_buffers */
  #ifndef GL_EXT_multiview_draw_buffers
  #define GL_COLOR_ATTACHMENT_EXT                                 0x90F0
  #define GL_MULTIVIEW_EXT                                        0x90F1
  #define GL_DRAW_BUFFER_EXT                                      0x0C01
  #define GL_READ_BUFFER_EXT                                      0x0C02
  #define GL_MAX_MULTIVIEW_BUFFERS_EXT                            0x90F2
  #endif
  
  /* GL_EXT_multi_draw_arrays */
  /* No new tokens introduced by this extension. */
  
  /* GL_EXT_occlusion_query_boolean */
  #ifndef GL_EXT_occlusion_query_boolean
  #define GL_ANY_SAMPLES_PASSED_EXT                               0x8C2F
  #define GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT                  0x8D6A
  #define GL_CURRENT_QUERY_EXT                                    0x8865
  #define GL_QUERY_RESULT_EXT                                     0x8866
  #define GL_QUERY_RESULT_AVAILABLE_EXT                           0x8867
  #endif
  
  /* GL_EXT_read_format_bgra */
  #ifndef GL_EXT_read_format_bgra
  #define GL_BGRA_EXT                                             0x80E1
  #define GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT                       0x8365
  #define GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT                       0x8366
  #endif
  
  /* GL_EXT_robustness */
  #ifndef GL_EXT_robustness
  /* reuse GL_NO_ERROR */
  #define GL_GUILTY_CONTEXT_RESET_EXT                             0x8253
  #define GL_INNOCENT_CONTEXT_RESET_EXT                           0x8254
  #define GL_UNKNOWN_CONTEXT_RESET_EXT                            0x8255
  #define GL_CONTEXT_ROBUST_ACCESS_EXT                            0x90F3
  #define GL_RESET_NOTIFICATION_STRATEGY_EXT                      0x8256
  #define GL_LOSE_CONTEXT_ON_RESET_EXT                            0x8252
  #define GL_NO_RESET_NOTIFICATION_EXT                            0x8261
  #endif
  
  /* GL_EXT_separate_shader_objects */
  #ifndef GL_EXT_separate_shader_objects
  #define GL_VERTEX_SHADER_BIT_EXT                                0x00000001
  #define GL_FRAGMENT_SHADER_BIT_EXT                              0x00000002
  #define GL_ALL_SHADER_BITS_EXT                                  0xFFFFFFFF
  #define GL_PROGRAM_SEPARABLE_EXT                                0x8258
  #define GL_ACTIVE_PROGRAM_EXT                                   0x8259
  #define GL_PROGRAM_PIPELINE_BINDING_EXT                         0x825A
  #endif
  
  /* GL_EXT_shader_framebuffer_fetch */
  #ifndef GL_EXT_shader_framebuffer_fetch
  #define GL_FRAGMENT_SHADER_DISCARDS_SAMPLES_EXT                 0x8A52
  #endif
  
  /* GL_EXT_shader_texture_lod */
  /* No new tokens introduced by this extension. */
  
  /* GL_EXT_shadow_samplers */
  #ifndef GL_EXT_shadow_samplers
  #define GL_TEXTURE_COMPARE_MODE_EXT                             0x884C
  #define GL_TEXTURE_COMPARE_FUNC_EXT                             0x884D
  #define GL_COMPARE_REF_TO_TEXTURE_EXT                           0x884E
  #define GL_SAMPLER_2D_SHADOW_EXT                                0x8B62
  #endif
  
  /* GL_EXT_sRGB */
  #ifndef GL_EXT_sRGB
  #define GL_SRGB_EXT                                             0x8C40
  #define GL_SRGB_ALPHA_EXT                                       0x8C42
  #define GL_SRGB8_ALPHA8_EXT                                     0x8C43
  #define GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT            0x8210
  #endif
  
  /* GL_EXT_texture_compression_dxt1 */
  #ifndef GL_EXT_texture_compression_dxt1
  #define GL_COMPRESSED_RGB_S3TC_DXT1_EXT                         0x83F0
  #define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT                        0x83F1
  #endif
  
  /* GL_EXT_texture_filter_anisotropic */
  #ifndef GL_EXT_texture_filter_anisotropic
  #define GL_TEXTURE_MAX_ANISOTROPY_EXT                           0x84FE
  #define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT                       0x84FF
  #endif
  
  /* GL_EXT_texture_format_BGRA8888 */
  #ifndef GL_EXT_texture_format_BGRA8888
  #define GL_BGRA_EXT                                             0x80E1
  #endif
  
  /* GL_EXT_texture_rg */
  #ifndef GL_EXT_texture_rg
  #define GL_RED_EXT                                              0x1903
  #define GL_RG_EXT                                               0x8227
  #define GL_R8_EXT                                               0x8229
  #define GL_RG8_EXT                                              0x822B
  #endif
  
  /* GL_EXT_texture_storage */
  #ifndef GL_EXT_texture_storage
  #define GL_TEXTURE_IMMUTABLE_FORMAT_EXT                         0x912F
  #define GL_ALPHA8_EXT                                           0x803C
  #define GL_LUMINANCE8_EXT                                       0x8040
  #define GL_LUMINANCE8_ALPHA8_EXT                                0x8045
  #define GL_RGBA32F_EXT                                          0x8814
  #define GL_RGB32F_EXT                                           0x8815
  #define GL_ALPHA32F_EXT                                         0x8816
  #define GL_LUMINANCE32F_EXT                                     0x8818
  #define GL_LUMINANCE_ALPHA32F_EXT                               0x8819
  /* reuse GL_RGBA16F_EXT */
  /* reuse GL_RGB16F_EXT */
  #define GL_ALPHA16F_EXT                                         0x881C
  #define GL_LUMINANCE16F_EXT                                     0x881E
  #define GL_LUMINANCE_ALPHA16F_EXT                               0x881F
  #define GL_RGB10_A2_EXT                                         0x8059
  #define GL_RGB10_EXT                                            0x8052
  #define GL_BGRA8_EXT                                            0x93A1
  #define GL_R8_EXT                                               0x8229
  #define GL_RG8_EXT                                              0x822B
  #define GL_R32F_EXT                                             0x822E
  #define GL_RG32F_EXT                                            0x8230
  #define GL_R16F_EXT                                             0x822D
  #define GL_RG16F_EXT                                            0x822F
  #endif
  
  /* GL_EXT_texture_type_2_10_10_10_REV */
  #ifndef GL_EXT_texture_type_2_10_10_10_REV
  #define GL_UNSIGNED_INT_2_10_10_10_REV_EXT                      0x8368
  #endif
  
  /* GL_EXT_unpack_subimage */
  #ifndef GL_EXT_unpack_subimage
  #define GL_UNPACK_ROW_LENGTH                                    0x0CF2
  #define GL_UNPACK_SKIP_ROWS                                     0x0CF3
  #define GL_UNPACK_SKIP_PIXELS                                   0x0CF4
  #endif
  
  /*------------------------------------------------------------------------*
   * DMP extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_DMP_shader_binary */
  #ifndef GL_DMP_shader_binary
  #define GL_SHADER_BINARY_DMP                                    0x9250
  #endif
  
  /*------------------------------------------------------------------------*
   * FJ extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_FJ_shader_binary_GCCSO */
  #ifndef GL_FJ_shader_binary_GCCSO
  #define GCCSO_SHADER_BINARY_FJ                                  0x9260
  #endif
  
  /*------------------------------------------------------------------------*
   * IMG extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_IMG_program_binary */
  #ifndef GL_IMG_program_binary
  #define GL_SGX_PROGRAM_BINARY_IMG                               0x9130
  #endif
  
  /* GL_IMG_read_format */
  #ifndef GL_IMG_read_format
  #define GL_BGRA_IMG                                             0x80E1
  #define GL_UNSIGNED_SHORT_4_4_4_4_REV_IMG                       0x8365
  #endif
  
  /* GL_IMG_shader_binary */
  #ifndef GL_IMG_shader_binary
  #define GL_SGX_BINARY_IMG                                       0x8C0A
  #endif
  
  /* GL_IMG_texture_compression_pvrtc */
  #ifndef GL_IMG_texture_compression_pvrtc
  #define GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG                      0x8C00
  #define GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG                      0x8C01
  #define GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG                     0x8C02
  #define GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG                     0x8C03
  #endif
  
  /* GL_IMG_multisampled_render_to_texture */
  #ifndef GL_IMG_multisampled_render_to_texture
  #define GL_RENDERBUFFER_SAMPLES_IMG                             0x9133
  #define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_IMG               0x9134
  #define GL_MAX_SAMPLES_IMG                                      0x9135
  #define GL_TEXTURE_SAMPLES_IMG                                  0x9136
  #endif
  
  /*------------------------------------------------------------------------*
   * NV extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_NV_coverage_sample */
  #ifndef GL_NV_coverage_sample
  #define GL_COVERAGE_COMPONENT_NV                                0x8ED0
  #define GL_COVERAGE_COMPONENT4_NV                               0x8ED1
  #define GL_COVERAGE_ATTACHMENT_NV                               0x8ED2
  #define GL_COVERAGE_BUFFERS_NV                                  0x8ED3
  #define GL_COVERAGE_SAMPLES_NV                                  0x8ED4
  #define GL_COVERAGE_ALL_FRAGMENTS_NV                            0x8ED5
  #define GL_COVERAGE_EDGE_FRAGMENTS_NV                           0x8ED6
  #define GL_COVERAGE_AUTOMATIC_NV                                0x8ED7
  #define GL_COVERAGE_BUFFER_BIT_NV                               0x8000
  #endif
  
  /* GL_NV_depth_nonlinear */
  #ifndef GL_NV_depth_nonlinear
  #define GL_DEPTH_COMPONENT16_NONLINEAR_NV                       0x8E2C
  #endif
  
  /* GL_NV_draw_buffers */
  #ifndef GL_NV_draw_buffers
  #define GL_MAX_DRAW_BUFFERS_NV                                  0x8824
  #define GL_DRAW_BUFFER0_NV                                      0x8825
  #define GL_DRAW_BUFFER1_NV                                      0x8826
  #define GL_DRAW_BUFFER2_NV                                      0x8827
  #define GL_DRAW_BUFFER3_NV                                      0x8828
  #define GL_DRAW_BUFFER4_NV                                      0x8829
  #define GL_DRAW_BUFFER5_NV                                      0x882A
  #define GL_DRAW_BUFFER6_NV                                      0x882B
  #define GL_DRAW_BUFFER7_NV                                      0x882C
  #define GL_DRAW_BUFFER8_NV                                      0x882D
  #define GL_DRAW_BUFFER9_NV                                      0x882E
  #define GL_DRAW_BUFFER10_NV                                     0x882F
  #define GL_DRAW_BUFFER11_NV                                     0x8830
  #define GL_DRAW_BUFFER12_NV                                     0x8831
  #define GL_DRAW_BUFFER13_NV                                     0x8832
  #define GL_DRAW_BUFFER14_NV                                     0x8833
  #define GL_DRAW_BUFFER15_NV                                     0x8834
  #define GL_COLOR_ATTACHMENT0_NV                                 0x8CE0
  #define GL_COLOR_ATTACHMENT1_NV                                 0x8CE1
  #define GL_COLOR_ATTACHMENT2_NV                                 0x8CE2
  #define GL_COLOR_ATTACHMENT3_NV                                 0x8CE3
  #define GL_COLOR_ATTACHMENT4_NV                                 0x8CE4
  #define GL_COLOR_ATTACHMENT5_NV                                 0x8CE5
  #define GL_COLOR_ATTACHMENT6_NV                                 0x8CE6
  #define GL_COLOR_ATTACHMENT7_NV                                 0x8CE7
  #define GL_COLOR_ATTACHMENT8_NV                                 0x8CE8
  #define GL_COLOR_ATTACHMENT9_NV                                 0x8CE9
  #define GL_COLOR_ATTACHMENT10_NV                                0x8CEA
  #define GL_COLOR_ATTACHMENT11_NV                                0x8CEB
  #define GL_COLOR_ATTACHMENT12_NV                                0x8CEC
  #define GL_COLOR_ATTACHMENT13_NV                                0x8CED
  #define GL_COLOR_ATTACHMENT14_NV                                0x8CEE
  #define GL_COLOR_ATTACHMENT15_NV                                0x8CEF
  #endif
  
  /* GL_NV_fbo_color_attachments */
  #ifndef GL_NV_fbo_color_attachments
  #define GL_MAX_COLOR_ATTACHMENTS_NV                             0x8CDF
  /* GL_COLOR_ATTACHMENT{0-15}_NV defined in GL_NV_draw_buffers already. */
  #endif
  
  /* GL_NV_fence */
  #ifndef GL_NV_fence
  #define GL_ALL_COMPLETED_NV                                     0x84F2
  #define GL_FENCE_STATUS_NV                                      0x84F3
  #define GL_FENCE_CONDITION_NV                                   0x84F4
  #endif
  
  /* GL_NV_read_buffer */
  #ifndef GL_NV_read_buffer
  #define GL_READ_BUFFER_NV                                       0x0C02
  #endif
  
  /* GL_NV_read_buffer_front */
  /* No new tokens introduced by this extension. */
  
  /* GL_NV_read_depth */
  /* No new tokens introduced by this extension. */
  
  /* GL_NV_read_depth_stencil */
  /* No new tokens introduced by this extension. */
  
  /* GL_NV_read_stencil */
  /* No new tokens introduced by this extension. */
  
  /* GL_NV_texture_compression_s3tc_update */
  /* No new tokens introduced by this extension. */
  
  /* GL_NV_texture_npot_2D_mipmap */
  /* No new tokens introduced by this extension. */
  
  /*------------------------------------------------------------------------*
   * QCOM extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_QCOM_alpha_test */
  #ifndef GL_QCOM_alpha_test
  #define GL_ALPHA_TEST_QCOM                                      0x0BC0
  #define GL_ALPHA_TEST_FUNC_QCOM                                 0x0BC1
  #define GL_ALPHA_TEST_REF_QCOM                                  0x0BC2
  #endif
  
  /* GL_QCOM_binning_control */
  #ifndef GL_QCOM_binning_control
  #define GL_BINNING_CONTROL_HINT_QCOM                            0x8FB0
  #define GL_CPU_OPTIMIZED_QCOM                                   0x8FB1
  #define GL_GPU_OPTIMIZED_QCOM                                   0x8FB2
  #define GL_RENDER_DIRECT_TO_FRAMEBUFFER_QCOM                    0x8FB3
  #endif
  
  /* GL_QCOM_driver_control */
  /* No new tokens introduced by this extension. */
  
  /* GL_QCOM_extended_get */
  #ifndef GL_QCOM_extended_get
  #define GL_TEXTURE_WIDTH_QCOM                                   0x8BD2
  #define GL_TEXTURE_HEIGHT_QCOM                                  0x8BD3
  #define GL_TEXTURE_DEPTH_QCOM                                   0x8BD4
  #define GL_TEXTURE_INTERNAL_FORMAT_QCOM                         0x8BD5
  #define GL_TEXTURE_FORMAT_QCOM                                  0x8BD6
  #define GL_TEXTURE_TYPE_QCOM                                    0x8BD7
  #define GL_TEXTURE_IMAGE_VALID_QCOM                             0x8BD8
  #define GL_TEXTURE_NUM_LEVELS_QCOM                              0x8BD9
  #define GL_TEXTURE_TARGET_QCOM                                  0x8BDA
  #define GL_TEXTURE_OBJECT_VALID_QCOM                            0x8BDB
  #define GL_STATE_RESTORE                                        0x8BDC
  #endif
  
  /* GL_QCOM_extended_get2 */
  /* No new tokens introduced by this extension. */
  
  /* GL_QCOM_perfmon_global_mode */
  #ifndef GL_QCOM_perfmon_global_mode
  #define GL_PERFMON_GLOBAL_MODE_QCOM                             0x8FA0
  #endif
  
  /* GL_QCOM_writeonly_rendering */
  #ifndef GL_QCOM_writeonly_rendering
  #define GL_WRITEONLY_RENDERING_QCOM                             0x8823
  #endif
  
  /* GL_QCOM_tiled_rendering */
  #ifndef GL_QCOM_tiled_rendering
  #define GL_COLOR_BUFFER_BIT0_QCOM                               0x00000001
  #define GL_COLOR_BUFFER_BIT1_QCOM                               0x00000002
  #define GL_COLOR_BUFFER_BIT2_QCOM                               0x00000004
  #define GL_COLOR_BUFFER_BIT3_QCOM                               0x00000008
  #define GL_COLOR_BUFFER_BIT4_QCOM                               0x00000010
  #define GL_COLOR_BUFFER_BIT5_QCOM                               0x00000020
  #define GL_COLOR_BUFFER_BIT6_QCOM                               0x00000040
  #define GL_COLOR_BUFFER_BIT7_QCOM                               0x00000080
  #define GL_DEPTH_BUFFER_BIT0_QCOM                               0x00000100
  #define GL_DEPTH_BUFFER_BIT1_QCOM                               0x00000200
  #define GL_DEPTH_BUFFER_BIT2_QCOM                               0x00000400
  #define GL_DEPTH_BUFFER_BIT3_QCOM                               0x00000800
  #define GL_DEPTH_BUFFER_BIT4_QCOM                               0x00001000
  #define GL_DEPTH_BUFFER_BIT5_QCOM                               0x00002000
  #define GL_DEPTH_BUFFER_BIT6_QCOM                               0x00004000
  #define GL_DEPTH_BUFFER_BIT7_QCOM                               0x00008000
  #define GL_STENCIL_BUFFER_BIT0_QCOM                             0x00010000
  #define GL_STENCIL_BUFFER_BIT1_QCOM                             0x00020000
  #define GL_STENCIL_BUFFER_BIT2_QCOM                             0x00040000
  #define GL_STENCIL_BUFFER_BIT3_QCOM                             0x00080000
  #define GL_STENCIL_BUFFER_BIT4_QCOM                             0x00100000
  #define GL_STENCIL_BUFFER_BIT5_QCOM                             0x00200000
  #define GL_STENCIL_BUFFER_BIT6_QCOM                             0x00400000
  #define GL_STENCIL_BUFFER_BIT7_QCOM                             0x00800000
  #define GL_MULTISAMPLE_BUFFER_BIT0_QCOM                         0x01000000
  #define GL_MULTISAMPLE_BUFFER_BIT1_QCOM                         0x02000000
  #define GL_MULTISAMPLE_BUFFER_BIT2_QCOM                         0x04000000
  #define GL_MULTISAMPLE_BUFFER_BIT3_QCOM                         0x08000000
  #define GL_MULTISAMPLE_BUFFER_BIT4_QCOM                         0x10000000
  #define GL_MULTISAMPLE_BUFFER_BIT5_QCOM                         0x20000000
  #define GL_MULTISAMPLE_BUFFER_BIT6_QCOM                         0x40000000
  #define GL_MULTISAMPLE_BUFFER_BIT7_QCOM                         0x80000000
  #endif
  
  /*------------------------------------------------------------------------*
   * VIV extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_VIV_shader_binary */
  #ifndef GL_VIV_shader_binary
  #define GL_SHADER_BINARY_VIV                                    0x8FC4
  #endif
  
  /*------------------------------------------------------------------------*
   * End of extension tokens, start of corresponding extension functions
   *------------------------------------------------------------------------*/
  
  /*------------------------------------------------------------------------*
   * OES extension functions
   *------------------------------------------------------------------------*/
  
  /* GL_OES_compressed_ETC1_RGB8_texture */
  #ifndef GL_OES_compressed_ETC1_RGB8_texture
  #define GL_OES_compressed_ETC1_RGB8_texture 1
  #endif
  
  /* GL_OES_compressed_paletted_texture */
  #ifndef GL_OES_compressed_paletted_texture
  #define GL_OES_compressed_paletted_texture 1
  #endif
  
  /* GL_OES_depth24 */
  #ifndef GL_OES_depth24
  #define GL_OES_depth24 1
  #endif
  
  /* GL_OES_depth32 */
  #ifndef GL_OES_depth32
  #define GL_OES_depth32 1
  #endif
  
  /* GL_OES_depth_texture */
  #ifndef GL_OES_depth_texture
  #define GL_OES_depth_texture 1
  #endif
  
  /* GL_OES_EGL_image */
  #ifndef GL_OES_EGL_image
  #define GL_OES_EGL_image 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glEGLImageTargetTexture2DOES (GLenum target,
          GLeglImageOES image);
  GL_APICALL void GL_APIENTRY glEGLImageTargetRenderbufferStorageOES (
      GLenum target, GLeglImageOES image);
  #endif
  typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETTEXTURE2DOESPROC) (GLenum target,
          GLeglImageOES image);
  typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC) (
      GLenum target, GLeglImageOES image);
  #endif
  
  /* GL_OES_EGL_image_external */
  #ifndef GL_OES_EGL_image_external
  #define GL_OES_EGL_image_external 1
  /* glEGLImageTargetTexture2DOES defined in GL_OES_EGL_image already. */
  #endif
  
  /* GL_OES_element_index_uint */
  #ifndef GL_OES_element_index_uint
  #define GL_OES_element_index_uint 1
  #endif
  
  /* GL_OES_fbo_render_mipmap */
  #ifndef GL_OES_fbo_render_mipmap
  #define GL_OES_fbo_render_mipmap 1
  #endif
  
  /* GL_OES_fragment_precision_high */
  #ifndef GL_OES_fragment_precision_high
  #define GL_OES_fragment_precision_high 1
  #endif
  
  /* GL_OES_get_program_binary */
  #ifndef GL_OES_get_program_binary
  #define GL_OES_get_program_binary 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glGetProgramBinaryOES (GLuint program,
          GLsizei bufSize, GLsizei* length, GLenum* binaryFormat, GLvoid* binary);
  GL_APICALL void GL_APIENTRY glProgramBinaryOES (GLuint program,
                                                  GLenum binaryFormat, const GLvoid* binary, GLint length);
  #endif
  typedef void (GL_APIENTRYP PFNGLGETPROGRAMBINARYOESPROC) (GLuint program,
          GLsizei bufSize, GLsizei* length, GLenum* binaryFormat, GLvoid* binary);
  typedef void (GL_APIENTRYP PFNGLPROGRAMBINARYOESPROC) (GLuint program,
          GLenum binaryFormat, const GLvoid* binary, GLint length);
  #endif
  
  /* GL_OES_mapbuffer */
  #ifndef GL_OES_mapbuffer
  #define GL_OES_mapbuffer 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void* GL_APIENTRY glMapBufferOES (GLenum target, GLenum access);
  GL_APICALL GLboolean GL_APIENTRY glUnmapBufferOES (GLenum target);
  GL_APICALL void GL_APIENTRY glGetBufferPointervOES (GLenum target, GLenum pname,
          GLvoid** params);
  #endif
  typedef void* (GL_APIENTRYP PFNGLMAPBUFFEROESPROC) (GLenum target,
          GLenum access);
  typedef GLboolean (GL_APIENTRYP PFNGLUNMAPBUFFEROESPROC) (GLenum target);
  typedef void (GL_APIENTRYP PFNGLGETBUFFERPOINTERVOESPROC) (GLenum target,
          GLenum pname, GLvoid** params);
  #endif
  
  /* GL_OES_packed_depth_stencil */
  #ifndef GL_OES_packed_depth_stencil
  #define GL_OES_packed_depth_stencil 1
  #endif
  
  /* GL_OES_required_internalformat */
  #ifndef GL_OES_required_internalformat
  #define GL_OES_required_internalformat 1
  #endif
  
  /* GL_OES_rgb8_rgba8 */
  #ifndef GL_OES_rgb8_rgba8
  #define GL_OES_rgb8_rgba8 1
  #endif
  
  /* GL_OES_standard_derivatives */
  #ifndef GL_OES_standard_derivatives
  #define GL_OES_standard_derivatives 1
  #endif
  
  /* GL_OES_stencil1 */
  #ifndef GL_OES_stencil1
  #define GL_OES_stencil1 1
  #endif
  
  /* GL_OES_stencil4 */
  #ifndef GL_OES_stencil4
  #define GL_OES_stencil4 1
  #endif
  
  #ifndef GL_OES_surfaceless_context
  #define GL_OES_surfaceless_context 1
  #endif
  
  /* GL_OES_texture_3D */
  #ifndef GL_OES_texture_3D
  #define GL_OES_texture_3D 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glTexImage3DOES (GLenum target, GLint level,
                                               GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth,
                                               GLint border, GLenum format, GLenum type, const GLvoid* pixels);
  GL_APICALL void GL_APIENTRY glTexSubImage3DOES (GLenum target, GLint level,
                                                  GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height,
                                                  GLsizei depth, GLenum format, GLenum type, const GLvoid* pixels);
  GL_APICALL void GL_APIENTRY glCopyTexSubImage3DOES (GLenum target, GLint level,
          GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width,
          GLsizei height);
  GL_APICALL void GL_APIENTRY glCompressedTexImage3DOES (GLenum target,
          GLint level, GLenum internalformat, GLsizei width, GLsizei height,
          GLsizei depth, GLint border, GLsizei imageSize, const GLvoid* data);
  GL_APICALL void GL_APIENTRY glCompressedTexSubImage3DOES (GLenum target,
          GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width,
          GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize,
          const GLvoid* data);
  GL_APICALL void GL_APIENTRY glFramebufferTexture3DOES (GLenum target,
          GLenum attachment, GLenum textarget, GLuint texture, GLint level,
          GLint zoffset);
  #endif
  typedef void (GL_APIENTRYP PFNGLTEXIMAGE3DOESPROC) (GLenum target, GLint level,
          GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth,
          GLint border, GLenum format, GLenum type, const GLvoid* pixels);
  typedef void (GL_APIENTRYP PFNGLTEXSUBIMAGE3DOESPROC) (GLenum target,
          GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width,
          GLsizei height, GLsizei depth, GLenum format, GLenum type,
          const GLvoid* pixels);
  typedef void (GL_APIENTRYP PFNGLCOPYTEXSUBIMAGE3DOESPROC) (GLenum target,
          GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y,
          GLsizei width, GLsizei height);
  typedef void (GL_APIENTRYP PFNGLCOMPRESSEDTEXIMAGE3DOESPROC) (GLenum target,
          GLint level, GLenum internalformat, GLsizei width, GLsizei height,
          GLsizei depth, GLint border, GLsizei imageSize, const GLvoid* data);
  typedef void (GL_APIENTRYP PFNGLCOMPRESSEDTEXSUBIMAGE3DOESPROC) (GLenum target,
          GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width,
          GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize,
          const GLvoid* data);
  typedef void (GL_APIENTRYP PFNGLFRAMEBUFFERTEXTURE3DOES) (GLenum target,
          GLenum attachment, GLenum textarget, GLuint texture, GLint level,
          GLint zoffset);
  #endif
  
  /* GL_OES_texture_float */
  #ifndef GL_OES_texture_float
  #define GL_OES_texture_float 1
  #endif
  
  /* GL_OES_texture_float_linear */
  #ifndef GL_OES_texture_float_linear
  #define GL_OES_texture_float_linear 1
  #endif
  
  /* GL_OES_texture_half_float */
  #ifndef GL_OES_texture_half_float
  #define GL_OES_texture_half_float 1
  #endif
  
  /* GL_OES_texture_half_float_linear */
  #ifndef GL_OES_texture_half_float_linear
  #define GL_OES_texture_half_float_linear 1
  #endif
  
  /* GL_OES_texture_npot */
  #ifndef GL_OES_texture_npot
  #define GL_OES_texture_npot 1
  #endif
  
  /* GL_OES_vertex_array_object */
  #ifndef GL_OES_vertex_array_object
  #define GL_OES_vertex_array_object 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glBindVertexArrayOES (GLuint array);
  GL_APICALL void GL_APIENTRY glDeleteVertexArraysOES (GLsizei n,
          const GLuint* arrays);
  GL_APICALL void GL_APIENTRY glGenVertexArraysOES (GLsizei n, GLuint* arrays);
  GL_APICALL GLboolean GL_APIENTRY glIsVertexArrayOES (GLuint array);
  #endif
  typedef void (GL_APIENTRYP PFNGLBINDVERTEXARRAYOESPROC) (GLuint array);
  typedef void (GL_APIENTRYP PFNGLDELETEVERTEXARRAYSOESPROC) (GLsizei n,
          const GLuint* arrays);
  typedef void (GL_APIENTRYP PFNGLGENVERTEXARRAYSOESPROC) (GLsizei n,
          GLuint* arrays);
  typedef GLboolean (GL_APIENTRYP PFNGLISVERTEXARRAYOESPROC) (GLuint array);
  #endif
  
  /* GL_OES_vertex_half_float */
  #ifndef GL_OES_vertex_half_float
  #define GL_OES_vertex_half_float 1
  #endif
  
  /* GL_OES_vertex_type_10_10_10_2 */
  #ifndef GL_OES_vertex_type_10_10_10_2
  #define GL_OES_vertex_type_10_10_10_2 1
  #endif
  
  /*------------------------------------------------------------------------*
   * KHR extension functions
   *------------------------------------------------------------------------*/
  
  #ifndef GL_KHR_debug
  #define GL_KHR_debug 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glDebugMessageControl (GLenum source, GLenum type,
          GLenum severity, GLsizei count, const GLuint* ids, GLboolean enabled);
  GL_APICALL void GL_APIENTRY glDebugMessageInsert (GLenum source, GLenum type,
                                                    GLuint id, GLenum severity, GLsizei length, const GLchar* buf);
  GL_APICALL void GL_APIENTRY glDebugMessageCallback (GLDEBUGPROC callback,
          const void* userParam);
  GL_APICALL GLuint GL_APIENTRY glGetDebugMessageLog (GLuint count,
          GLsizei bufsize, GLenum* sources, GLenum* types, GLuint* ids,
          GLenum* severities, GLsizei* lengths, GLchar* messageLog);
  GL_APICALL void GL_APIENTRY glPushDebugGroup (GLenum source, GLuint id,
                                                GLsizei length, const GLchar* message);
  GL_APICALL void GL_APIENTRY glPopDebugGroup (void);
  GL_APICALL void GL_APIENTRY glObjectLabel (GLenum identifier, GLuint name,
                                             GLsizei length, const GLchar* label);
  GL_APICALL void GL_APIENTRY glGetObjectLabel (GLenum identifier, GLuint name,
                                                GLsizei bufSize, GLsizei* length, GLchar* label);
  GL_APICALL void GL_APIENTRY glObjectPtrLabel (const void* ptr, GLsizei length,
                                                const GLchar* label);
  GL_APICALL void GL_APIENTRY glGetObjectPtrLabel (const void* ptr,
                                                   GLsizei bufSize, GLsizei* length, GLchar* label);
  GL_APICALL void GL_APIENTRY glGetPointerv (GLenum pname, void** params);
  #endif
  typedef void (GL_APIENTRYP PFNGLDEBUGMESSAGECONTROLPROC) (GLenum source,
          GLenum type, GLenum severity, GLsizei count, const GLuint* ids,
          GLboolean enabled);
  typedef void (GL_APIENTRYP PFNGLDEBUGMESSAGEINSERTPROC) (GLenum source,
          GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* buf);
  typedef void (GL_APIENTRYP PFNGLDEBUGMESSAGECALLBACKPROC) (GLDEBUGPROC callback,
          const void* userParam);
  typedef GLuint (GL_APIENTRYP PFNGLGETDEBUGMESSAGELOGPROC) (GLuint count,
          GLsizei bufsize, GLenum* sources, GLenum* types, GLuint* ids,
          GLenum* severities, GLsizei* lengths, GLchar* messageLog);
  typedef void (GL_APIENTRYP PFNGLPUSHDEBUGGROUPPROC) (GLenum source, GLuint id,
          GLsizei length, const GLchar* message);
  typedef void (GL_APIENTRYP PFNGLPOPDEBUGGROUPPROC) (void);
  typedef void (GL_APIENTRYP PFNGLOBJECTLABELPROC) (GLenum identifier,
                                                    GLuint name, GLsizei length, const GLchar* label);
  typedef void (GL_APIENTRYP PFNGLGETOBJECTLABELPROC) (GLenum identifier,
          GLuint name, GLsizei bufSize, GLsizei* length, GLchar* label);
  typedef void (GL_APIENTRYP PFNGLOBJECTPTRLABELPROC) (const void* ptr,
          GLsizei length, const GLchar* label);
  typedef void (GL_APIENTRYP PFNGLGETOBJECTPTRLABELPROC) (const void* ptr,
          GLsizei bufSize, GLsizei* length, GLchar* label);
  typedef void (GL_APIENTRYP PFNGLGETPOINTERVPROC) (GLenum pname, void** params);
  #endif
  
  #ifndef GL_KHR_texture_compression_astc_ldr
  #define GL_KHR_texture_compression_astc_ldr 1
  #endif
  
  
  /*------------------------------------------------------------------------*
   * AMD extension functions
   *------------------------------------------------------------------------*/
  
  /* GL_AMD_compressed_3DC_texture */
  #ifndef GL_AMD_compressed_3DC_texture
  #define GL_AMD_compressed_3DC_texture 1
  #endif
  
  /* GL_AMD_compressed_ATC_texture */
  #ifndef GL_AMD_compressed_ATC_texture
  #define GL_AMD_compressed_ATC_texture 1
  #endif
  
  /* AMD_performance_monitor */
  #ifndef GL_AMD_performance_monitor
  #define GL_AMD_performance_monitor 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glGetPerfMonitorGroupsAMD (GLint* numGroups,
          GLsizei groupsSize, GLuint* groups);
  GL_APICALL void GL_APIENTRY glGetPerfMonitorCountersAMD (GLuint group,
          GLint* numCounters, GLint* maxActiveCounters, GLsizei counterSize,
          GLuint* counters);
  GL_APICALL void GL_APIENTRY glGetPerfMonitorGroupStringAMD (GLuint group,
          GLsizei bufSize, GLsizei* length, GLchar* groupString);
  GL_APICALL void GL_APIENTRY glGetPerfMonitorCounterStringAMD (GLuint group,
          GLuint counter, GLsizei bufSize, GLsizei* length, GLchar* counterString);
  GL_APICALL void GL_APIENTRY glGetPerfMonitorCounterInfoAMD (GLuint group,
          GLuint counter, GLenum pname, GLvoid* data);
  GL_APICALL void GL_APIENTRY glGenPerfMonitorsAMD (GLsizei n, GLuint* monitors);
  GL_APICALL void GL_APIENTRY glDeletePerfMonitorsAMD (GLsizei n,
          GLuint* monitors);
  GL_APICALL void GL_APIENTRY glSelectPerfMonitorCountersAMD (GLuint monitor,
          GLboolean enable, GLuint group, GLint numCounters, GLuint* countersList);
  GL_APICALL void GL_APIENTRY glBeginPerfMonitorAMD (GLuint monitor);
  GL_APICALL void GL_APIENTRY glEndPerfMonitorAMD (GLuint monitor);
  GL_APICALL void GL_APIENTRY glGetPerfMonitorCounterDataAMD (GLuint monitor,
          GLenum pname, GLsizei dataSize, GLuint* data, GLint* bytesWritten);
  #endif
  typedef void (GL_APIENTRYP PFNGLGETPERFMONITORGROUPSAMDPROC) (GLint* numGroups,
          GLsizei groupsSize, GLuint* groups);
  typedef void (GL_APIENTRYP PFNGLGETPERFMONITORCOUNTERSAMDPROC) (GLuint group,
          GLint* numCounters, GLint* maxActiveCounters, GLsizei counterSize,
          GLuint* counters);
  typedef void (GL_APIENTRYP PFNGLGETPERFMONITORGROUPSTRINGAMDPROC) (GLuint group,
          GLsizei bufSize, GLsizei* length, GLchar* groupString);
  typedef void (GL_APIENTRYP PFNGLGETPERFMONITORCOUNTERSTRINGAMDPROC) (
      GLuint group, GLuint counter, GLsizei bufSize, GLsizei* length,
      GLchar* counterString);
  typedef void (GL_APIENTRYP PFNGLGETPERFMONITORCOUNTERINFOAMDPROC) (GLuint group,
          GLuint counter, GLenum pname, GLvoid* data);
  typedef void (GL_APIENTRYP PFNGLGENPERFMONITORSAMDPROC) (GLsizei n,
          GLuint* monitors);
  typedef void (GL_APIENTRYP PFNGLDELETEPERFMONITORSAMDPROC) (GLsizei n,
          GLuint* monitors);
  typedef void (GL_APIENTRYP PFNGLSELECTPERFMONITORCOUNTERSAMDPROC) (
      GLuint monitor, GLboolean enable, GLuint group, GLint numCounters,
      GLuint* countersList);
  typedef void (GL_APIENTRYP PFNGLBEGINPERFMONITORAMDPROC) (GLuint monitor);
  typedef void (GL_APIENTRYP PFNGLENDPERFMONITORAMDPROC) (GLuint monitor);
  typedef void (GL_APIENTRYP PFNGLGETPERFMONITORCOUNTERDATAAMDPROC) (
      GLuint monitor, GLenum pname, GLsizei dataSize, GLuint* data,
      GLint* bytesWritten);
  #endif
  
  /* GL_AMD_program_binary_Z400 */
  #ifndef GL_AMD_program_binary_Z400
  #define GL_AMD_program_binary_Z400 1
  #endif
  
  /*------------------------------------------------------------------------*
   * ANGLE extension functions
   *------------------------------------------------------------------------*/
  
  /* GL_ANGLE_framebuffer_blit */
  #ifndef GL_ANGLE_framebuffer_blit
  #define GL_ANGLE_framebuffer_blit 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glBlitFramebufferANGLE (GLint srcX0, GLint srcY0,
          GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
          GLbitfield mask, GLenum filter);
  #endif
  typedef void (GL_APIENTRYP PFNGLBLITFRAMEBUFFERANGLEPROC) (GLint srcX0,
          GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1,
          GLint dstY1, GLbitfield mask, GLenum filter);
  #endif
  
  /* GL_ANGLE_framebuffer_multisample */
  #ifndef GL_ANGLE_framebuffer_multisample
  #define GL_ANGLE_framebuffer_multisample 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleANGLE (
      GLenum target, GLsizei samples, GLenum internalformat, GLsizei width,
      GLsizei height);
  #endif
  typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEANGLEPROC) (
      GLenum target, GLsizei samples, GLenum internalformat, GLsizei width,
      GLsizei height);
  #endif
  
  #ifndef GL_ANGLE_instanced_arrays
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glDrawArraysInstancedANGLE (GLenum mode,
          GLint first, GLsizei count, GLsizei primcount);
  GL_APICALL void GL_APIENTRY glDrawElementsInstancedANGLE (GLenum mode,
          GLsizei count, GLenum type, const void* indices, GLsizei primcount);
  GL_APICALL void GL_APIENTRY glVertexAttribDivisorANGLE (GLuint index,
          GLuint divisor);
  #endif
  typedef void (GL_APIENTRYP PFLGLDRAWARRAYSINSTANCEDANGLEPROC) (GLenum mode,
          GLint first, GLsizei count, GLsizei primcount);
  typedef void (GL_APIENTRYP PFLGLDRAWELEMENTSINSTANCEDANGLEPROC) (GLenum mode,
          GLsizei count, GLenum type, const void* indices, GLsizei primcount);
  typedef void (GL_APIENTRYP PFLGLVERTEXATTRIBDIVISORANGLEPROC) (GLuint index,
          GLuint divisor);
  #endif
  
  /* GL_ANGLE_pack_reverse_row_order */
  #ifndef GL_ANGLE_pack_reverse_row_order
  #define GL_ANGLE_pack_reverse_row_order 1
  #endif
  
  /* GL_ANGLE_texture_compression_dxt3 */
  #ifndef GL_ANGLE_texture_compression_dxt3
  #define GL_ANGLE_texture_compression_dxt3 1
  #endif
  
  /* GL_ANGLE_texture_compression_dxt5 */
  #ifndef GL_ANGLE_texture_compression_dxt5
  #define GL_ANGLE_texture_compression_dxt5 1
  #endif
  
  /* GL_ANGLE_texture_usage */
  #ifndef GL_ANGLE_texture_usage
  #define GL_ANGLE_texture_usage 1
  #endif
  
  #ifndef GL_ANGLE_translated_shader_source
  #define GL_ANGLE_translated_shader_source 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glGetTranslatedShaderSourceANGLE (GLuint shader,
          GLsizei bufsize, GLsizei* length, GLchar* source);
  #endif
  typedef void (GL_APIENTRYP PFLGLGETTRANSLATEDSHADERSOURCEANGLEPROC) (
      GLuint shader, GLsizei bufsize, GLsizei* length, GLchar* source);
  #endif
  
  /*------------------------------------------------------------------------*
   * APPLE extension functions
   *------------------------------------------------------------------------*/
  
  /* GL_APPLE_copy_texture_levels */
  #ifndef GL_APPLE_copy_texture_levels
  #define GL_APPLE_copy_texture_levels 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glCopyTextureLevelsAPPLE (GLuint destinationTexture,
          GLuint sourceTexture, GLint sourceBaseLevel, GLsizei sourceLevelCount);
  #endif
  typedef void (GL_APIENTRYP PFNGLCOPYTEXTURELEVELSAPPLEPROC) (
      GLuint destinationTexture, GLuint sourceTexture, GLint sourceBaseLevel,
      GLsizei sourceLevelCount);
  #endif
  
  /* GL_APPLE_framebuffer_multisample */
  #ifndef GL_APPLE_framebuffer_multisample
  #define GL_APPLE_framebuffer_multisample 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleAPPLE (GLenum,
          GLsizei, GLenum, GLsizei, GLsizei);
  GL_APICALL void GL_APIENTRY glResolveMultisampleFramebufferAPPLE (void);
  #endif /* GL_GLEXT_PROTOTYPES */
  typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEAPPLEPROC) (
      GLenum target, GLsizei samples, GLenum internalformat, GLsizei width,
      GLsizei height);
  typedef void (GL_APIENTRYP PFNGLRESOLVEMULTISAMPLEFRAMEBUFFERAPPLEPROC) (void);
  #endif
  
  /* GL_APPLE_rgb_422 */
  #ifndef GL_APPLE_rgb_422
  #define GL_APPLE_rgb_422 1
  #endif
  
  /* GL_APPLE_sync */
  #ifndef GL_APPLE_sync
  #define GL_APPLE_sync 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL GLsync GL_APIENTRY glFenceSyncAPPLE (GLenum condition,
                                                  GLbitfield flags);
  GL_APICALL GLboolean GL_APIENTRY glIsSyncAPPLE (GLsync sync);
  GL_APICALL void GL_APIENTRY glDeleteSyncAPPLE (GLsync sync);
  GL_APICALL GLenum GL_APIENTRY glClientWaitSyncAPPLE (GLsync sync,
          GLbitfield flags, GLuint64 timeout);
  GL_APICALL void GL_APIENTRY glWaitSyncAPPLE (GLsync sync, GLbitfield flags,
                                               GLuint64 timeout);
  GL_APICALL void GL_APIENTRY glGetInteger64vAPPLE (GLenum pname,
                                                    GLint64* params);
  GL_APICALL void GL_APIENTRY glGetSyncivAPPLE (GLsync sync, GLenum pname,
                                                GLsizei bufSize, GLsizei* length, GLint* values);
  #endif
  typedef GLsync (GL_APIENTRYP PFNGLFENCESYNCAPPLEPROC) (GLenum condition,
          GLbitfield flags);
  typedef GLboolean (GL_APIENTRYP PFNGLISSYNCAPPLEPROC) (GLsync sync);
  typedef void (GL_APIENTRYP PFNGLDELETESYNCAPPLEPROC) (GLsync sync);
  typedef GLenum (GL_APIENTRYP PFNGLCLIENTWAITSYNCAPPLEPROC) (GLsync sync,
          GLbitfield flags, GLuint64 timeout);
  typedef void (GL_APIENTRYP PFNGLWAITSYNCAPPLEPROC) (GLsync sync,
          GLbitfield flags, GLuint64 timeout);
  typedef void (GL_APIENTRYP PFNGLGETINTEGER64VAPPLEPROC) (GLenum pname,
          GLint64* params);
  typedef void (GL_APIENTRYP PFNGLGETSYNCIVAPPLEPROC) (GLsync sync, GLenum pname,
          GLsizei bufSize, GLsizei* length, GLint* values);
  #endif
  
  /* GL_APPLE_texture_format_BGRA8888 */
  #ifndef GL_APPLE_texture_format_BGRA8888
  #define GL_APPLE_texture_format_BGRA8888 1
  #endif
  
  /* GL_APPLE_texture_max_level */
  #ifndef GL_APPLE_texture_max_level
  #define GL_APPLE_texture_max_level 1
  #endif
  
  /*------------------------------------------------------------------------*
   * ARM extension functions
   *------------------------------------------------------------------------*/
  
  /* GL_ARM_mali_program_binary */
  #ifndef GL_ARM_mali_program_binary
  #define GL_ARM_mali_program_binary 1
  #endif
  
  /* GL_ARM_mali_shader_binary */
  #ifndef GL_ARM_mali_shader_binary
  #define GL_ARM_mali_shader_binary 1
  #endif
  
  /* GL_ARM_rgba8 */
  #ifndef GL_ARM_rgba8
  #define GL_ARM_rgba8 1
  #endif
  
  /*------------------------------------------------------------------------*
   * EXT extension functions
   *------------------------------------------------------------------------*/
  
  /* GL_EXT_blend_minmax */
  #ifndef GL_EXT_blend_minmax
  #define GL_EXT_blend_minmax 1
  #endif
  
  /* GL_EXT_color_buffer_half_float */
  #ifndef GL_EXT_color_buffer_half_float
  #define GL_EXT_color_buffer_half_float 1
  #endif
  
  /* GL_EXT_debug_label */
  #ifndef GL_EXT_debug_label
  #define GL_EXT_debug_label 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glLabelObjectEXT (GLenum type, GLuint object,
                                                GLsizei length, const GLchar* label);
  GL_APICALL void GL_APIENTRY glGetObjectLabelEXT (GLenum type, GLuint object,
                                                   GLsizei bufSize, GLsizei* length, GLchar* label);
  #endif
  typedef void (GL_APIENTRYP PFNGLLABELOBJECTEXTPROC) (GLenum type, GLuint object,
          GLsizei length, const GLchar* label);
  typedef void (GL_APIENTRYP PFNGLGETOBJECTLABELEXTPROC) (GLenum type,
          GLuint object, GLsizei bufSize, GLsizei* length, GLchar* label);
  #endif
  
  /* GL_EXT_debug_marker */
  #ifndef GL_EXT_debug_marker
  #define GL_EXT_debug_marker 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glInsertEventMarkerEXT (GLsizei length,
          const GLchar* marker);
  GL_APICALL void GL_APIENTRY glPushGroupMarkerEXT (GLsizei length,
                                                    const GLchar* marker);
  GL_APICALL void GL_APIENTRY glPopGroupMarkerEXT (void);
  #endif
  typedef void (GL_APIENTRYP PFNGLINSERTEVENTMARKEREXTPROC) (GLsizei length,
          const GLchar* marker);
  typedef void (GL_APIENTRYP PFNGLPUSHGROUPMARKEREXTPROC) (GLsizei length,
          const GLchar* marker);
  typedef void (GL_APIENTRYP PFNGLPOPGROUPMARKEREXTPROC) (void);
  #endif
  
  /* GL_EXT_discard_framebuffer */
  #ifndef GL_EXT_discard_framebuffer
  #define GL_EXT_discard_framebuffer 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glDiscardFramebufferEXT (GLenum target,
          GLsizei numAttachments, const GLenum* attachments);
  #endif
  typedef void (GL_APIENTRYP PFNGLDISCARDFRAMEBUFFEREXTPROC) (GLenum target,
          GLsizei numAttachments, const GLenum* attachments);
  #endif
  
  /* GL_EXT_map_buffer_range */
  #ifndef GL_EXT_map_buffer_range
  #define GL_EXT_map_buffer_range 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void* GL_APIENTRY glMapBufferRangeEXT (GLenum target,
                                                    GLintptr offset, GLsizeiptr length, GLbitfield access);
  GL_APICALL void GL_APIENTRY glFlushMappedBufferRangeEXT (GLenum target,
          GLintptr offset, GLsizeiptr length);
  #endif
  typedef void* (GL_APIENTRYP PFNGLMAPBUFFERRANGEEXTPROC) (GLenum target,
          GLintptr offset, GLsizeiptr length, GLbitfield access);
  typedef void (GL_APIENTRYP PFNGLFLUSHMAPPEDBUFFERRANGEEXTPROC) (GLenum target,
          GLintptr offset, GLsizeiptr length);
  #endif
  
  /* GL_EXT_multisampled_render_to_texture */
  #ifndef GL_EXT_multisampled_render_to_texture
  #define GL_EXT_multisampled_render_to_texture 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleEXT (GLenum,
          GLsizei, GLenum, GLsizei, GLsizei);
  GL_APICALL void GL_APIENTRY glFramebufferTexture2DMultisampleEXT (GLenum,
          GLenum, GLenum, GLuint, GLint, GLsizei);
  #endif
  typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC) (
      GLenum target, GLsizei samples, GLenum internalformat, GLsizei width,
      GLsizei height);
  typedef void (GL_APIENTRYP PFNGLFRAMEBUFFERTEXTURE2DMULTISAMPLEEXTPROC) (
      GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level,
      GLsizei samples);
  #endif
  
  /* GL_EXT_multiview_draw_buffers */
  #ifndef GL_EXT_multiview_draw_buffers
  #define GL_EXT_multiview_draw_buffers 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glReadBufferIndexedEXT (GLenum src, GLint index);
  GL_APICALL void GL_APIENTRY glDrawBuffersIndexedEXT (GLint n,
          const GLenum* location, const GLint* indices);
  GL_APICALL void GL_APIENTRY glGetIntegeri_vEXT (GLenum target, GLuint index,
                                                  GLint* data);
  #endif
  typedef void (GL_APIENTRYP PFNGLREADBUFFERINDEXEDEXTPROC) (GLenum src,
          GLint index);
  typedef void (GL_APIENTRYP PFNGLDRAWBUFFERSINDEXEDEXTPROC) (GLint n,
          const GLenum* location, const GLint* indices);
  typedef void (GL_APIENTRYP PFNGLGETINTEGERI_VEXTPROC) (GLenum target,
          GLuint index, GLint* data);
  #endif
  
  #ifndef GL_EXT_multi_draw_arrays
  #define GL_EXT_multi_draw_arrays 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glMultiDrawArraysEXT (GLenum, GLint*, GLsizei*,
                                                    GLsizei);
  GL_APICALL void GL_APIENTRY glMultiDrawElementsEXT (GLenum, const GLsizei*,
          GLenum, const GLvoid**, GLsizei);
  #endif /* GL_GLEXT_PROTOTYPES */
  typedef void (GL_APIENTRYP PFNGLMULTIDRAWARRAYSEXTPROC) (GLenum mode,
          GLint* first, GLsizei* count, GLsizei primcount);
  typedef void (GL_APIENTRYP PFNGLMULTIDRAWELEMENTSEXTPROC) (GLenum mode,
          const GLsizei* count, GLenum type, const GLvoid** indices, GLsizei primcount);
  #endif
  
  /* GL_EXT_occlusion_query_boolean */
  #ifndef GL_EXT_occlusion_query_boolean
  #define GL_EXT_occlusion_query_boolean 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glGenQueriesEXT (GLsizei n, GLuint* ids);
  GL_APICALL void GL_APIENTRY glDeleteQueriesEXT (GLsizei n, const GLuint* ids);
  GL_APICALL GLboolean GL_APIENTRY glIsQueryEXT (GLuint id);
  GL_APICALL void GL_APIENTRY glBeginQueryEXT (GLenum target, GLuint id);
  GL_APICALL void GL_APIENTRY glEndQueryEXT (GLenum target);
  GL_APICALL void GL_APIENTRY glGetQueryivEXT (GLenum target, GLenum pname,
                                               GLint* params);
  GL_APICALL void GL_APIENTRY glGetQueryObjectuivEXT (GLuint id, GLenum pname,
          GLuint* params);
  #endif
  typedef void (GL_APIENTRYP PFNGLGENQUERIESEXTPROC) (GLsizei n, GLuint* ids);
  typedef void (GL_APIENTRYP PFNGLDELETEQUERIESEXTPROC) (GLsizei n,
          const GLuint* ids);
  typedef GLboolean (GL_APIENTRYP PFNGLISQUERYEXTPROC) (GLuint id);
  typedef void (GL_APIENTRYP PFNGLBEGINQUERYEXTPROC) (GLenum target, GLuint id);
  typedef void (GL_APIENTRYP PFNGLENDQUERYEXTPROC) (GLenum target);
  typedef void (GL_APIENTRYP PFNGLGETQUERYIVEXTPROC) (GLenum target, GLenum pname,
          GLint* params);
  typedef void (GL_APIENTRYP PFNGLGETQUERYOBJECTUIVEXTPROC) (GLuint id,
          GLenum pname, GLuint* params);
  #endif
  
  /* GL_EXT_read_format_bgra */
  #ifndef GL_EXT_read_format_bgra
  #define GL_EXT_read_format_bgra 1
  #endif
  
  /* GL_EXT_robustness */
  #ifndef GL_EXT_robustness
  #define GL_EXT_robustness 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL GLenum GL_APIENTRY glGetGraphicsResetStatusEXT (void);
  GL_APICALL void GL_APIENTRY glReadnPixelsEXT (GLint x, GLint y, GLsizei width,
                                                GLsizei height, GLenum format, GLenum type, GLsizei bufSize, void* data);
  GL_APICALL void GL_APIENTRY glGetnUniformfvEXT (GLuint program, GLint location,
                                                  GLsizei bufSize, float* params);
  GL_APICALL void GL_APIENTRY glGetnUniformivEXT (GLuint program, GLint location,
                                                  GLsizei bufSize, GLint* params);
  #endif
  typedef GLenum (GL_APIENTRYP PFNGLGETGRAPHICSRESETSTATUSEXTPROC) (void);
  typedef void (GL_APIENTRYP PFNGLREADNPIXELSEXTPROC) (GLint x, GLint y,
          GLsizei width, GLsizei height, GLenum format, GLenum type, GLsizei bufSize,
          void* data);
  typedef void (GL_APIENTRYP PFNGLGETNUNIFORMFVEXTPROC) (GLuint program,
          GLint location, GLsizei bufSize, float* params);
  typedef void (GL_APIENTRYP PFNGLGETNUNIFORMIVEXTPROC) (GLuint program,
          GLint location, GLsizei bufSize, GLint* params);
  #endif
  
  /* GL_EXT_separate_shader_objects */
  #ifndef GL_EXT_separate_shader_objects
  #define GL_EXT_separate_shader_objects 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glUseProgramStagesEXT (GLuint pipeline,
          GLbitfield stages, GLuint program);
  GL_APICALL void GL_APIENTRY glActiveShaderProgramEXT (GLuint pipeline,
          GLuint program);
  GL_APICALL GLuint GL_APIENTRY glCreateShaderProgramvEXT (GLenum type,
          GLsizei count, const GLchar** strings);
  GL_APICALL void GL_APIENTRY glBindProgramPipelineEXT (GLuint pipeline);
  GL_APICALL void GL_APIENTRY glDeleteProgramPipelinesEXT (GLsizei n,
          const GLuint* pipelines);
  GL_APICALL void GL_APIENTRY glGenProgramPipelinesEXT (GLsizei n,
          GLuint* pipelines);
  GL_APICALL GLboolean GL_APIENTRY glIsProgramPipelineEXT (GLuint pipeline);
  GL_APICALL void GL_APIENTRY glProgramParameteriEXT (GLuint program,
          GLenum pname, GLint value);
  GL_APICALL void GL_APIENTRY glGetProgramPipelineivEXT (GLuint pipeline,
          GLenum pname, GLint* params);
  GL_APICALL void GL_APIENTRY glProgramUniform1iEXT (GLuint program,
          GLint location, GLint x);
  GL_APICALL void GL_APIENTRY glProgramUniform2iEXT (GLuint program,
          GLint location, GLint x, GLint y);
  GL_APICALL void GL_APIENTRY glProgramUniform3iEXT (GLuint program,
          GLint location, GLint x, GLint y, GLint z);
  GL_APICALL void GL_APIENTRY glProgramUniform4iEXT (GLuint program,
          GLint location, GLint x, GLint y, GLint z, GLint w);
  GL_APICALL void GL_APIENTRY glProgramUniform1fEXT (GLuint program,
          GLint location, GLfloat x);
  GL_APICALL void GL_APIENTRY glProgramUniform2fEXT (GLuint program,
          GLint location, GLfloat x, GLfloat y);
  GL_APICALL void GL_APIENTRY glProgramUniform3fEXT (GLuint program,
          GLint location, GLfloat x, GLfloat y, GLfloat z);
  GL_APICALL void GL_APIENTRY glProgramUniform4fEXT (GLuint program,
          GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
  GL_APICALL void GL_APIENTRY glProgramUniform1ivEXT (GLuint program,
          GLint location, GLsizei count, const GLint* value);
  GL_APICALL void GL_APIENTRY glProgramUniform2ivEXT (GLuint program,
          GLint location, GLsizei count, const GLint* value);
  GL_APICALL void GL_APIENTRY glProgramUniform3ivEXT (GLuint program,
          GLint location, GLsizei count, const GLint* value);
  GL_APICALL void GL_APIENTRY glProgramUniform4ivEXT (GLuint program,
          GLint location, GLsizei count, const GLint* value);
  GL_APICALL void GL_APIENTRY glProgramUniform1fvEXT (GLuint program,
          GLint location, GLsizei count, const GLfloat* value);
  GL_APICALL void GL_APIENTRY glProgramUniform2fvEXT (GLuint program,
          GLint location, GLsizei count, const GLfloat* value);
  GL_APICALL void GL_APIENTRY glProgramUniform3fvEXT (GLuint program,
          GLint location, GLsizei count, const GLfloat* value);
  GL_APICALL void GL_APIENTRY glProgramUniform4fvEXT (GLuint program,
          GLint location, GLsizei count, const GLfloat* value);
  GL_APICALL void GL_APIENTRY glProgramUniformMatrix2fvEXT (GLuint program,
          GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
  GL_APICALL void GL_APIENTRY glProgramUniformMatrix3fvEXT (GLuint program,
          GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
  GL_APICALL void GL_APIENTRY glProgramUniformMatrix4fvEXT (GLuint program,
          GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
  GL_APICALL void GL_APIENTRY glValidateProgramPipelineEXT (GLuint pipeline);
  GL_APICALL void GL_APIENTRY glGetProgramPipelineInfoLogEXT (GLuint pipeline,
          GLsizei bufSize, GLsizei* length, GLchar* infoLog);
  #endif
  typedef void (GL_APIENTRYP PFNGLUSEPROGRAMSTAGESEXTPROC) (GLuint pipeline,
          GLbitfield stages, GLuint program);
  typedef void (GL_APIENTRYP PFNGLACTIVESHADERPROGRAMEXTPROC) (GLuint pipeline,
          GLuint program);
  typedef GLuint (GL_APIENTRYP PFNGLCREATESHADERPROGRAMVEXTPROC) (GLenum type,
          GLsizei count, const GLchar** strings);
  typedef void (GL_APIENTRYP PFNGLBINDPROGRAMPIPELINEEXTPROC) (GLuint pipeline);
  typedef void (GL_APIENTRYP PFNGLDELETEPROGRAMPIPELINESEXTPROC) (GLsizei n,
          const GLuint* pipelines);
  typedef void (GL_APIENTRYP PFNGLGENPROGRAMPIPELINESEXTPROC) (GLsizei n,
          GLuint* pipelines);
  typedef GLboolean (GL_APIENTRYP PFNGLISPROGRAMPIPELINEEXTPROC) (
      GLuint pipeline);
  typedef void (GL_APIENTRYP PFNGLPROGRAMPARAMETERIEXTPROC) (GLuint program,
          GLenum pname, GLint value);
  typedef void (GL_APIENTRYP PFNGLGETPROGRAMPIPELINEIVEXTPROC) (GLuint pipeline,
          GLenum pname, GLint* params);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM1IEXTPROC) (GLuint program,
          GLint location, GLint x);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM2IEXTPROC) (GLuint program,
          GLint location, GLint x, GLint y);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM3IEXTPROC) (GLuint program,
          GLint location, GLint x, GLint y, GLint z);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM4IEXTPROC) (GLuint program,
          GLint location, GLint x, GLint y, GLint z, GLint w);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM1FEXTPROC) (GLuint program,
          GLint location, GLfloat x);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM2FEXTPROC) (GLuint program,
          GLint location, GLfloat x, GLfloat y);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM3FEXTPROC) (GLuint program,
          GLint location, GLfloat x, GLfloat y, GLfloat z);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM4FEXTPROC) (GLuint program,
          GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM1IVEXTPROC) (GLuint program,
          GLint location, GLsizei count, const GLint* value);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM2IVEXTPROC) (GLuint program,
          GLint location, GLsizei count, const GLint* value);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM3IVEXTPROC) (GLuint program,
          GLint location, GLsizei count, const GLint* value);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM4IVEXTPROC) (GLuint program,
          GLint location, GLsizei count, const GLint* value);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM1FVEXTPROC) (GLuint program,
          GLint location, GLsizei count, const GLfloat* value);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM2FVEXTPROC) (GLuint program,
          GLint location, GLsizei count, const GLfloat* value);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM3FVEXTPROC) (GLuint program,
          GLint location, GLsizei count, const GLfloat* value);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM4FVEXTPROC) (GLuint program,
          GLint location, GLsizei count, const GLfloat* value);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORMMATRIX2FVEXTPROC) (GLuint program,
          GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORMMATRIX3FVEXTPROC) (GLuint program,
          GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
  typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORMMATRIX4FVEXTPROC) (GLuint program,
          GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
  typedef void (GL_APIENTRYP PFNGLVALIDATEPROGRAMPIPELINEEXTPROC) (
      GLuint pipeline);
  typedef void (GL_APIENTRYP PFNGLGETPROGRAMPIPELINEINFOLOGEXTPROC) (
      GLuint pipeline, GLsizei bufSize, GLsizei* length, GLchar* infoLog);
  #endif
  
  /* GL_EXT_shader_framebuffer_fetch */
  #ifndef GL_EXT_shader_framebuffer_fetch
  #define GL_EXT_shader_framebuffer_fetch 1
  #endif
  
  /* GL_EXT_shader_texture_lod */
  #ifndef GL_EXT_shader_texture_lod
  #define GL_EXT_shader_texture_lod 1
  #endif
  
  /* GL_EXT_shadow_samplers */
  #ifndef GL_EXT_shadow_samplers
  #define GL_EXT_shadow_samplers 1
  #endif
  
  /* GL_EXT_sRGB */
  #ifndef GL_EXT_sRGB
  #define GL_EXT_sRGB 1
  #endif
  
  /* GL_EXT_texture_compression_dxt1 */
  #ifndef GL_EXT_texture_compression_dxt1
  #define GL_EXT_texture_compression_dxt1 1
  #endif
  
  /* GL_EXT_texture_filter_anisotropic */
  #ifndef GL_EXT_texture_filter_anisotropic
  #define GL_EXT_texture_filter_anisotropic 1
  #endif
  
  /* GL_EXT_texture_format_BGRA8888 */
  #ifndef GL_EXT_texture_format_BGRA8888
  #define GL_EXT_texture_format_BGRA8888 1
  #endif
  
  /* GL_EXT_texture_rg */
  #ifndef GL_EXT_texture_rg
  #define GL_EXT_texture_rg 1
  #endif
  
  /* GL_EXT_texture_storage */
  #ifndef GL_EXT_texture_storage
  #define GL_EXT_texture_storage 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glTexStorage1DEXT (GLenum target, GLsizei levels,
                                                 GLenum internalformat, GLsizei width);
  GL_APICALL void GL_APIENTRY glTexStorage2DEXT (GLenum target, GLsizei levels,
                                                 GLenum internalformat, GLsizei width, GLsizei height);
  GL_APICALL void GL_APIENTRY glTexStorage3DEXT (GLenum target, GLsizei levels,
                                                 GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth);
  GL_APICALL void GL_APIENTRY glTextureStorage1DEXT (GLuint texture,
          GLenum target, GLsizei levels, GLenum internalformat, GLsizei width);
  GL_APICALL void GL_APIENTRY glTextureStorage2DEXT (GLuint texture,
          GLenum target, GLsizei levels, GLenum internalformat, GLsizei width,
          GLsizei height);
  GL_APICALL void GL_APIENTRY glTextureStorage3DEXT (GLuint texture,
          GLenum target, GLsizei levels, GLenum internalformat, GLsizei width,
          GLsizei height, GLsizei depth);
  #endif
  typedef void (GL_APIENTRYP PFNGLTEXSTORAGE1DEXTPROC) (GLenum target,
          GLsizei levels, GLenum internalformat, GLsizei width);
  typedef void (GL_APIENTRYP PFNGLTEXSTORAGE2DEXTPROC) (GLenum target,
          GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height);
  typedef void (GL_APIENTRYP PFNGLTEXSTORAGE3DEXTPROC) (GLenum target,
          GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height,
          GLsizei depth);
  typedef void (GL_APIENTRYP PFNGLTEXTURESTORAGE1DEXTPROC) (GLuint texture,
          GLenum target, GLsizei levels, GLenum internalformat, GLsizei width);
  typedef void (GL_APIENTRYP PFNGLTEXTURESTORAGE2DEXTPROC) (GLuint texture,
          GLenum target, GLsizei levels, GLenum internalformat, GLsizei width,
          GLsizei height);
  typedef void (GL_APIENTRYP PFNGLTEXTURESTORAGE3DEXTPROC) (GLuint texture,
          GLenum target, GLsizei levels, GLenum internalformat, GLsizei width,
          GLsizei height, GLsizei depth);
  #endif
  
  /* GL_EXT_texture_type_2_10_10_10_REV */
  #ifndef GL_EXT_texture_type_2_10_10_10_REV
  #define GL_EXT_texture_type_2_10_10_10_REV 1
  #endif
  
  /* GL_EXT_unpack_subimage */
  #ifndef GL_EXT_unpack_subimage
  #define GL_EXT_unpack_subimage 1
  #endif
  
  /*------------------------------------------------------------------------*
   * DMP extension functions
   *------------------------------------------------------------------------*/
  
  /* GL_DMP_shader_binary */
  #ifndef GL_DMP_shader_binary
  #define GL_DMP_shader_binary 1
  #endif
  
  /*------------------------------------------------------------------------*
   * FJ extension functions
   *------------------------------------------------------------------------*/
  
  /* GL_FJ_shader_binary_GCCSO */
  #ifndef GL_FJ_shader_binary_GCCSO
  #define GL_FJ_shader_binary_GCCSO 1
  #endif
  
  /*------------------------------------------------------------------------*
   * IMG extension functions
   *------------------------------------------------------------------------*/
  
  /* GL_IMG_program_binary */
  #ifndef GL_IMG_program_binary
  #define GL_IMG_program_binary 1
  #endif
  
  /* GL_IMG_read_format */
  #ifndef GL_IMG_read_format
  #define GL_IMG_read_format 1
  #endif
  
  /* GL_IMG_shader_binary */
  #ifndef GL_IMG_shader_binary
  #define GL_IMG_shader_binary 1
  #endif
  
  /* GL_IMG_texture_compression_pvrtc */
  #ifndef GL_IMG_texture_compression_pvrtc
  #define GL_IMG_texture_compression_pvrtc 1
  #endif
  
  /* GL_IMG_multisampled_render_to_texture */
  #ifndef GL_IMG_multisampled_render_to_texture
  #define GL_IMG_multisampled_render_to_texture 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleIMG (GLenum,
          GLsizei, GLenum, GLsizei, GLsizei);
  GL_APICALL void GL_APIENTRY glFramebufferTexture2DMultisampleIMG (GLenum,
          GLenum, GLenum, GLuint, GLint, GLsizei);
  #endif
  typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEIMGPROC) (
      GLenum target, GLsizei samples, GLenum internalformat, GLsizei width,
      GLsizei height);
  typedef void (GL_APIENTRYP PFNGLFRAMEBUFFERTEXTURE2DMULTISAMPLEIMGPROC) (
      GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level,
      GLsizei samples);
  #endif
  
  /*------------------------------------------------------------------------*
   * NV extension functions
   *------------------------------------------------------------------------*/
  
  /* GL_NV_coverage_sample */
  #ifndef GL_NV_coverage_sample
  #define GL_NV_coverage_sample 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glCoverageMaskNV (GLboolean mask);
  GL_APICALL void GL_APIENTRY glCoverageOperationNV (GLenum operation);
  #endif
  typedef void (GL_APIENTRYP PFNGLCOVERAGEMASKNVPROC) (GLboolean mask);
  typedef void (GL_APIENTRYP PFNGLCOVERAGEOPERATIONNVPROC) (GLenum operation);
  #endif
  
  /* GL_NV_depth_nonlinear */
  #ifndef GL_NV_depth_nonlinear
  #define GL_NV_depth_nonlinear 1
  #endif
  
  /* GL_NV_draw_buffers */
  #ifndef GL_NV_draw_buffers
  #define GL_NV_draw_buffers 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glDrawBuffersNV (GLsizei n, const GLenum* bufs);
  #endif
  typedef void (GL_APIENTRYP PFNGLDRAWBUFFERSNVPROC) (GLsizei n,
          const GLenum* bufs);
  #endif
  
  /* GL_NV_fbo_color_attachments */
  #ifndef GL_NV_fbo_color_attachments
  #define GL_NV_fbo_color_attachments 1
  #endif
  
  /* GL_NV_fence */
  #ifndef GL_NV_fence
  #define GL_NV_fence 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glDeleteFencesNV (GLsizei, const GLuint*);
  GL_APICALL void GL_APIENTRY glGenFencesNV (GLsizei, GLuint*);
  GL_APICALL GLboolean GL_APIENTRY glIsFenceNV (GLuint);
  GL_APICALL GLboolean GL_APIENTRY glTestFenceNV (GLuint);
  GL_APICALL void GL_APIENTRY glGetFenceivNV (GLuint, GLenum, GLint*);
  GL_APICALL void GL_APIENTRY glFinishFenceNV (GLuint);
  GL_APICALL void GL_APIENTRY glSetFenceNV (GLuint, GLenum);
  #endif
  typedef void (GL_APIENTRYP PFNGLDELETEFENCESNVPROC) (GLsizei n,
          const GLuint* fences);
  typedef void (GL_APIENTRYP PFNGLGENFENCESNVPROC) (GLsizei n, GLuint* fences);
  typedef GLboolean (GL_APIENTRYP PFNGLISFENCENVPROC) (GLuint fence);
  typedef GLboolean (GL_APIENTRYP PFNGLTESTFENCENVPROC) (GLuint fence);
  typedef void (GL_APIENTRYP PFNGLGETFENCEIVNVPROC) (GLuint fence, GLenum pname,
          GLint* params);
  typedef void (GL_APIENTRYP PFNGLFINISHFENCENVPROC) (GLuint fence);
  typedef void (GL_APIENTRYP PFNGLSETFENCENVPROC) (GLuint fence,
                                                   GLenum condition);
  #endif
  
  /* GL_NV_read_buffer */
  #ifndef GL_NV_read_buffer
  #define GL_NV_read_buffer 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glReadBufferNV (GLenum mode);
  #endif
  typedef void (GL_APIENTRYP PFNGLREADBUFFERNVPROC) (GLenum mode);
  #endif
  
  /* GL_NV_read_buffer_front */
  #ifndef GL_NV_read_buffer_front
  #define GL_NV_read_buffer_front 1
  #endif
  
  /* GL_NV_read_depth */
  #ifndef GL_NV_read_depth
  #define GL_NV_read_depth 1
  #endif
  
  /* GL_NV_read_depth_stencil */
  #ifndef GL_NV_read_depth_stencil
  #define GL_NV_read_depth_stencil 1
  #endif
  
  /* GL_NV_read_stencil */
  #ifndef GL_NV_read_stencil
  #define GL_NV_read_stencil 1
  #endif
  
  /* GL_NV_texture_compression_s3tc_update */
  #ifndef GL_NV_texture_compression_s3tc_update
  #define GL_NV_texture_compression_s3tc_update 1
  #endif
  
  /* GL_NV_texture_npot_2D_mipmap */
  #ifndef GL_NV_texture_npot_2D_mipmap
  #define GL_NV_texture_npot_2D_mipmap 1
  #endif
  
  /*------------------------------------------------------------------------*
   * QCOM extension functions
   *------------------------------------------------------------------------*/
  
  /* GL_QCOM_alpha_test */
  #ifndef GL_QCOM_alpha_test
  #define GL_QCOM_alpha_test 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glAlphaFuncQCOM (GLenum func, GLclampf ref);
  #endif
  typedef void (GL_APIENTRYP PFNGLALPHAFUNCQCOMPROC) (GLenum func, GLclampf ref);
  #endif
  
  /* GL_QCOM_binning_control */
  #ifndef GL_QCOM_binning_control
  #define GL_QCOM_binning_control 1
  #endif
  
  /* GL_QCOM_driver_control */
  #ifndef GL_QCOM_driver_control
  #define GL_QCOM_driver_control 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glGetDriverControlsQCOM (GLint* num, GLsizei size,
          GLuint* driverControls);
  GL_APICALL void GL_APIENTRY glGetDriverControlStringQCOM (GLuint driverControl,
          GLsizei bufSize, GLsizei* length, GLchar* driverControlString);
  GL_APICALL void GL_APIENTRY glEnableDriverControlQCOM (GLuint driverControl);
  GL_APICALL void GL_APIENTRY glDisableDriverControlQCOM (GLuint driverControl);
  #endif
  typedef void (GL_APIENTRYP PFNGLGETDRIVERCONTROLSQCOMPROC) (GLint* num,
          GLsizei size, GLuint* driverControls);
  typedef void (GL_APIENTRYP PFNGLGETDRIVERCONTROLSTRINGQCOMPROC) (
      GLuint driverControl, GLsizei bufSize, GLsizei* length,
      GLchar* driverControlString);
  typedef void (GL_APIENTRYP PFNGLENABLEDRIVERCONTROLQCOMPROC) (
      GLuint driverControl);
  typedef void (GL_APIENTRYP PFNGLDISABLEDRIVERCONTROLQCOMPROC) (
      GLuint driverControl);
  #endif
  
  /* GL_QCOM_extended_get */
  #ifndef GL_QCOM_extended_get
  #define GL_QCOM_extended_get 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glExtGetTexturesQCOM (GLuint* textures,
                                                    GLint maxTextures, GLint* numTextures);
  GL_APICALL void GL_APIENTRY glExtGetBuffersQCOM (GLuint* buffers,
                                                   GLint maxBuffers, GLint* numBuffers);
  GL_APICALL void GL_APIENTRY glExtGetRenderbuffersQCOM (GLuint* renderbuffers,
          GLint maxRenderbuffers, GLint* numRenderbuffers);
  GL_APICALL void GL_APIENTRY glExtGetFramebuffersQCOM (GLuint* framebuffers,
          GLint maxFramebuffers, GLint* numFramebuffers);
  GL_APICALL void GL_APIENTRY glExtGetTexLevelParameterivQCOM (GLuint texture,
          GLenum face, GLint level, GLenum pname, GLint* params);
  GL_APICALL void GL_APIENTRY glExtTexObjectStateOverrideiQCOM (GLenum target,
          GLenum pname, GLint param);
  GL_APICALL void GL_APIENTRY glExtGetTexSubImageQCOM (GLenum target, GLint level,
          GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height,
          GLsizei depth, GLenum format, GLenum type, GLvoid* texels);
  GL_APICALL void GL_APIENTRY glExtGetBufferPointervQCOM (GLenum target,
          GLvoid** params);
  #endif
  typedef void (GL_APIENTRYP PFNGLEXTGETTEXTURESQCOMPROC) (GLuint* textures,
          GLint maxTextures, GLint* numTextures);
  typedef void (GL_APIENTRYP PFNGLEXTGETBUFFERSQCOMPROC) (GLuint* buffers,
          GLint maxBuffers, GLint* numBuffers);
  typedef void (GL_APIENTRYP PFNGLEXTGETRENDERBUFFERSQCOMPROC) (
      GLuint* renderbuffers, GLint maxRenderbuffers, GLint* numRenderbuffers);
  typedef void (GL_APIENTRYP PFNGLEXTGETFRAMEBUFFERSQCOMPROC) (
      GLuint* framebuffers, GLint maxFramebuffers, GLint* numFramebuffers);
  typedef void (GL_APIENTRYP PFNGLEXTGETTEXLEVELPARAMETERIVQCOMPROC) (
      GLuint texture, GLenum face, GLint level, GLenum pname, GLint* params);
  typedef void (GL_APIENTRYP PFNGLEXTTEXOBJECTSTATEOVERRIDEIQCOMPROC) (
      GLenum target, GLenum pname, GLint param);
  typedef void (GL_APIENTRYP PFNGLEXTGETTEXSUBIMAGEQCOMPROC) (GLenum target,
          GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width,
          GLsizei height, GLsizei depth, GLenum format, GLenum type, GLvoid* texels);
  typedef void (GL_APIENTRYP PFNGLEXTGETBUFFERPOINTERVQCOMPROC) (GLenum target,
          GLvoid** params);
  #endif
  
  /* GL_QCOM_extended_get2 */
  #ifndef GL_QCOM_extended_get2
  #define GL_QCOM_extended_get2 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glExtGetShadersQCOM (GLuint* shaders,
                                                   GLint maxShaders, GLint* numShaders);
  GL_APICALL void GL_APIENTRY glExtGetProgramsQCOM (GLuint* programs,
                                                    GLint maxPrograms, GLint* numPrograms);
  GL_APICALL GLboolean GL_APIENTRY glExtIsProgramBinaryQCOM (GLuint program);
  GL_APICALL void GL_APIENTRY glExtGetProgramBinarySourceQCOM (GLuint program,
          GLenum shadertype, GLchar* source, GLint* length);
  #endif
  typedef void (GL_APIENTRYP PFNGLEXTGETSHADERSQCOMPROC) (GLuint* shaders,
          GLint maxShaders, GLint* numShaders);
  typedef void (GL_APIENTRYP PFNGLEXTGETPROGRAMSQCOMPROC) (GLuint* programs,
          GLint maxPrograms, GLint* numPrograms);
  typedef GLboolean (GL_APIENTRYP PFNGLEXTISPROGRAMBINARYQCOMPROC) (
      GLuint program);
  typedef void (GL_APIENTRYP PFNGLEXTGETPROGRAMBINARYSOURCEQCOMPROC) (
      GLuint program, GLenum shadertype, GLchar* source, GLint* length);
  #endif
  
  /* GL_QCOM_perfmon_global_mode */
  #ifndef GL_QCOM_perfmon_global_mode
  #define GL_QCOM_perfmon_global_mode 1
  #endif
  
  /* GL_QCOM_writeonly_rendering */
  #ifndef GL_QCOM_writeonly_rendering
  #define GL_QCOM_writeonly_rendering 1
  #endif
  
  /* GL_QCOM_tiled_rendering */
  #ifndef GL_QCOM_tiled_rendering
  #define GL_QCOM_tiled_rendering 1
  #ifdef GL_GLEXT_PROTOTYPES
  GL_APICALL void GL_APIENTRY glStartTilingQCOM (GLuint x, GLuint y, GLuint width,
                                                 GLuint height, GLbitfield preserveMask);
  GL_APICALL void GL_APIENTRY glEndTilingQCOM (GLbitfield preserveMask);
  #endif
  typedef void (GL_APIENTRYP PFNGLSTARTTILINGQCOMPROC) (GLuint x, GLuint y,
          GLuint width, GLuint height, GLbitfield preserveMask);
  typedef void (GL_APIENTRYP PFNGLENDTILINGQCOMPROC) (GLbitfield preserveMask);
  #endif
  
  /*------------------------------------------------------------------------*
   * VIV extension tokens
   *------------------------------------------------------------------------*/
  
  /* GL_VIV_shader_binary */
  #ifndef GL_VIV_shader_binary
  #define GL_VIV_shader_binary 1
  #endif
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* __gl2ext_h_ */
  
  #endif /* _MSC_VER */
  
  #ifndef APIENTRY
      #define APIENTRY GL_APIENTRY
  #endif
  