Draft of luajit/ffi binding for opengl 3 core api

gl3.lua

local ffi = require 'ffi'

local gl = {
  GL_DEPTH_BUFFER_BIT =               0x00000100,
  GL_STENCIL_BUFFER_BIT =             0x00000400,
  GL_COLOR_BUFFER_BIT =               0x00004000,
  GL_FALSE =                          0,
  GL_TRUE =                           1,
  GL_POINTS =                         0x0000,
  GL_LINES =                          0x0001,
  GL_LINE_LOOP =                      0x0002,
  GL_LINE_STRIP =                     0x0003,
  GL_TRIANGLES =                      0x0004,
  GL_TRIANGLE_STRIP =                 0x0005,
  GL_TRIANGLE_FAN =                   0x0006,
  GL_NEVER =                          0x0200,
  GL_LESS =                           0x0201,
  GL_EQUAL =                          0x0202,
  GL_LEQUAL =                         0x0203,
  GL_GREATER =                        0x0204,
  GL_NOTEQUAL =                       0x0205,
  GL_GEQUAL =                         0x0206,
  GL_ALWAYS =                         0x0207,
  GL_ZERO =                           0,
  GL_ONE =                            1,
  GL_SRC_COLOR =                      0x0300,
  GL_ONE_MINUS_SRC_COLOR =            0x0301,
  GL_SRC_ALPHA =                      0x0302,
  GL_ONE_MINUS_SRC_ALPHA =            0x0303,
  GL_DST_ALPHA =                      0x0304,
  GL_ONE_MINUS_DST_ALPHA =            0x0305,
  GL_DST_COLOR =                      0x0306,
  GL_ONE_MINUS_DST_COLOR =            0x0307,
  GL_SRC_ALPHA_SATURATE =             0x0308,
  GL_NONE =                           0,
  GL_FRONT_LEFT =                     0x0400,
  GL_FRONT_RIGHT =                    0x0401,
  GL_BACK_LEFT =                      0x0402,
  GL_BACK_RIGHT =                     0x0403,
  GL_FRONT =                          0x0404,
  GL_BACK =                           0x0405,
  GL_LEFT =                           0x0406,
  GL_RIGHT =                          0x0407,
  GL_FRONT_AND_BACK =                 0x0408,
  GL_NO_ERROR =                       0,
  GL_INVALID_ENUM =                   0x0500,
  GL_INVALID_VALUE =                  0x0501,
  GL_INVALID_OPERATION =              0x0502,
  GL_OUT_OF_MEMORY =                  0x0505,
  GL_CW =                             0x0900,
  GL_CCW =                            0x0901,
  GL_POINT_SIZE =                     0x0B11,
  GL_POINT_SIZE_RANGE =               0x0B12,
  GL_POINT_SIZE_GRANULARITY =         0x0B13,
  GL_LINE_SMOOTH =                    0x0B20,
  GL_LINE_WIDTH =                     0x0B21,
  GL_LINE_WIDTH_RANGE =               0x0B22,
  GL_LINE_WIDTH_GRANULARITY =         0x0B23,
  GL_POLYGON_SMOOTH =                 0x0B41,
  GL_CULL_FACE =                      0x0B44,
  GL_CULL_FACE_MODE =                 0x0B45,
  GL_FRONT_FACE =                     0x0B46,
  GL_DEPTH_RANGE =                    0x0B70,
  GL_DEPTH_TEST =                     0x0B71,
  GL_DEPTH_WRITEMASK =                0x0B72,
  GL_DEPTH_CLEAR_VALUE =              0x0B73,
  GL_DEPTH_FUNC =                     0x0B74,
  GL_STENCIL_TEST =                   0x0B90,
  GL_STENCIL_CLEAR_VALUE =            0x0B91,
  GL_STENCIL_FUNC =                   0x0B92,
  GL_STENCIL_VALUE_MASK =             0x0B93,
  GL_STENCIL_FAIL =                   0x0B94,
  GL_STENCIL_PASS_DEPTH_FAIL =        0x0B95,
  GL_STENCIL_PASS_DEPTH_PASS =        0x0B96,
  GL_STENCIL_REF =                    0x0B97,
  GL_STENCIL_WRITEMASK =              0x0B98,
  GL_VIEWPORT =                       0x0BA2,
  GL_DITHER =                         0x0BD0,
  GL_BLEND_DST =                      0x0BE0,
  GL_BLEND_SRC =                      0x0BE1,
  GL_BLEND =                          0x0BE2,
  GL_LOGIC_OP_MODE =                  0x0BF0,
  GL_COLOR_LOGIC_OP =                 0x0BF2,
  GL_DRAW_BUFFER =                    0x0C01,
  GL_READ_BUFFER =                    0x0C02,
  GL_SCISSOR_BOX =                    0x0C10,
  GL_SCISSOR_TEST =                   0x0C11,
  GL_COLOR_CLEAR_VALUE =              0x0C22,
  GL_COLOR_WRITEMASK =                0x0C23,
  GL_DOUBLEBUFFER =                   0x0C32,
  GL_STEREO =                         0x0C33,
  GL_LINE_SMOOTH_HINT =               0x0C52,
  GL_POLYGON_SMOOTH_HINT =            0x0C53,
  GL_UNPACK_SWAP_BYTES =              0x0CF0,
  GL_UNPACK_LSB_FIRST =               0x0CF1,
  GL_UNPACK_ROW_LENGTH =              0x0CF2,
  GL_UNPACK_SKIP_ROWS =               0x0CF3,
  GL_UNPACK_SKIP_PIXELS =             0x0CF4,
  GL_UNPACK_ALIGNMENT =               0x0CF5,
  GL_PACK_SWAP_BYTES =                0x0D00,
  GL_PACK_LSB_FIRST =                 0x0D01,
  GL_PACK_ROW_LENGTH =                0x0D02,
  GL_PACK_SKIP_ROWS =                 0x0D03,
  GL_PACK_SKIP_PIXELS =               0x0D04,
  GL_PACK_ALIGNMENT =                 0x0D05,
  GL_MAX_TEXTURE_SIZE =               0x0D33,
  GL_MAX_VIEWPORT_DIMS =              0x0D3A,
  GL_SUBPIXEL_BITS =                  0x0D50,
  GL_TEXTURE_1D =                     0x0DE0,
  GL_TEXTURE_2D =                     0x0DE1,
  GL_POLYGON_OFFSET_UNITS =           0x2A00,
  GL_POLYGON_OFFSET_POINT =           0x2A01,
  GL_POLYGON_OFFSET_LINE =            0x2A02,
  GL_POLYGON_OFFSET_FILL =            0x8037,
  GL_POLYGON_OFFSET_FACTOR =          0x8038,
  GL_TEXTURE_BINDING_1D =             0x8068,
  GL_TEXTURE_BINDING_2D =             0x8069,
  GL_TEXTURE_WIDTH =                  0x1000,
  GL_TEXTURE_HEIGHT =                 0x1001,
  GL_TEXTURE_INTERNAL_FORMAT =        0x1003,
  GL_TEXTURE_BORDER_COLOR =           0x1004,
  GL_TEXTURE_RED_SIZE =               0x805C,
  GL_TEXTURE_GREEN_SIZE =             0x805D,
  GL_TEXTURE_BLUE_SIZE =              0x805E,
  GL_TEXTURE_ALPHA_SIZE =             0x805F,
  GL_DONT_CARE =                      0x1100,
  GL_FASTEST =                        0x1101,
  GL_NICEST =                         0x1102,
  GL_BYTE =                           0x1400,
  GL_UNSIGNED_BYTE =                  0x1401,
  GL_SHORT =                          0x1402,
  GL_UNSIGNED_SHORT =                 0x1403,
  GL_INT =                            0x1404,
  GL_UNSIGNED_INT =                   0x1405,
  GL_FLOAT =                          0x1406,
  GL_DOUBLE =                         0x140A,
  GL_CLEAR =                          0x1500,
  GL_AND =                            0x1501,
  GL_AND_REVERSE =                    0x1502,
  GL_COPY =                           0x1503,
  GL_AND_INVERTED =                   0x1504,
  GL_NOOP =                           0x1505,
  GL_XOR =                            0x1506,
  GL_OR =                             0x1507,
  GL_NOR =                            0x1508,
  GL_EQUIV =                          0x1509,
  GL_INVERT =                         0x150A,
  GL_OR_REVERSE =                     0x150B,
  GL_COPY_INVERTED =                  0x150C,
  GL_OR_INVERTED =                    0x150D,
  GL_NAND =                           0x150E,
  GL_SET =                            0x150F,
  GL_TEXTURE =                        0x1702,
  GL_COLOR =                          0x1800,
  GL_DEPTH =                          0x1801,
  GL_STENCIL =                        0x1802,
  GL_STENCIL_INDEX =                  0x1901,
  GL_DEPTH_COMPONENT =                0x1902,
  GL_RED =                            0x1903,
  GL_GREEN =                          0x1904,
  GL_BLUE =                           0x1905,
  GL_ALPHA =                          0x1906,
  GL_RGB =                            0x1907,
  GL_RGBA =                           0x1908,
  GL_POINT =                          0x1B00,
  GL_LINE =                           0x1B01,
  GL_FILL =                           0x1B02,
  GL_KEEP =                           0x1E00,
  GL_REPLACE =                        0x1E01,
  GL_INCR =                           0x1E02,
  GL_DECR =                           0x1E03,
  GL_VENDOR =                         0x1F00,
  GL_RENDERER =                       0x1F01,
  GL_VERSION =                        0x1F02,
  GL_EXTENSIONS =                     0x1F03,
  GL_NEAREST =                        0x2600,
  GL_LINEAR =                         0x2601,
  GL_NEAREST_MIPMAP_NEAREST =         0x2700,
  GL_LINEAR_MIPMAP_NEAREST =          0x2701,
  GL_NEAREST_MIPMAP_LINEAR =          0x2702,
  GL_LINEAR_MIPMAP_LINEAR =           0x2703,
  GL_TEXTURE_MAG_FILTER =             0x2800,
  GL_TEXTURE_MIN_FILTER =             0x2801,
  GL_TEXTURE_WRAP_S =                 0x2802,
  GL_TEXTURE_WRAP_T =                 0x2803,
  GL_PROXY_TEXTURE_1D =               0x8063,
  GL_PROXY_TEXTURE_2D =               0x8064,
  GL_REPEAT =                         0x2901,
  GL_R3_G3_B2 =                       0x2A10,
  GL_RGB4 =                           0x804F,
  GL_RGB5 =                           0x8050,
  GL_RGB8 =                           0x8051,
  GL_RGB10 =                          0x8052,
  GL_RGB12 =                          0x8053,
  GL_RGB16 =                          0x8054,
  GL_RGBA2 =                          0x8055,
  GL_RGBA4 =                          0x8056,
  GL_RGB5_A1 =                        0x8057,
  GL_RGBA8 =                          0x8058,
  GL_RGB10_A2 =                       0x8059,
  GL_RGBA12 =                         0x805A,
  GL_RGBA16 =                         0x805B,
  GL_UNSIGNED_BYTE_3_3_2 =            0x8032,
  GL_UNSIGNED_SHORT_4_4_4_4 =         0x8033,
  GL_UNSIGNED_SHORT_5_5_5_1 =         0x8034,
  GL_UNSIGNED_INT_8_8_8_8 =           0x8035,
  GL_UNSIGNED_INT_10_10_10_2 =        0x8036,
  GL_TEXTURE_BINDING_3D =             0x806A,
  GL_PACK_SKIP_IMAGES =               0x806B,
  GL_PACK_IMAGE_HEIGHT =              0x806C,
  GL_UNPACK_SKIP_IMAGES =             0x806D,
  GL_UNPACK_IMAGE_HEIGHT =            0x806E,
  GL_TEXTURE_3D =                     0x806F,
  GL_PROXY_TEXTURE_3D =               0x8070,
  GL_TEXTURE_DEPTH =                  0x8071,
  GL_TEXTURE_WRAP_R =                 0x8072,
  GL_MAX_3D_TEXTURE_SIZE =            0x8073,
  GL_UNSIGNED_BYTE_2_3_3_REV =        0x8362,
  GL_UNSIGNED_SHORT_5_6_5 =           0x8363,
  GL_UNSIGNED_SHORT_5_6_5_REV =       0x8364,
  GL_UNSIGNED_SHORT_4_4_4_4_REV =     0x8365,
  GL_UNSIGNED_SHORT_1_5_5_5_REV =     0x8366,
  GL_UNSIGNED_INT_8_8_8_8_REV =       0x8367,
  GL_UNSIGNED_INT_2_10_10_10_REV =    0x8368,
  GL_BGR =                            0x80E0,
  GL_BGRA =                           0x80E1,
  GL_MAX_ELEMENTS_VERTICES =          0x80E8,
  GL_MAX_ELEMENTS_INDICES =           0x80E9,
  GL_CLAMP_TO_EDGE =                  0x812F,
  GL_TEXTURE_MIN_LOD =                0x813A,
  GL_TEXTURE_MAX_LOD =                0x813B,
  GL_TEXTURE_BASE_LEVEL =             0x813C,
  GL_TEXTURE_MAX_LEVEL =              0x813D,
  GL_SMOOTH_POINT_SIZE_RANGE =        0x0B12,
  GL_SMOOTH_POINT_SIZE_GRANULARITY =  0x0B13,
  GL_SMOOTH_LINE_WIDTH_RANGE =        0x0B22,
  GL_SMOOTH_LINE_WIDTH_GRANULARITY =  0x0B23,
  GL_ALIASED_LINE_WIDTH_RANGE =       0x846E,
  GL_CONSTANT_COLOR =                 0x8001,
  GL_ONE_MINUS_CONSTANT_COLOR =       0x8002,
  GL_CONSTANT_ALPHA =                 0x8003,
  GL_ONE_MINUS_CONSTANT_ALPHA =       0x8004,
  GL_BLEND_COLOR =                    0x8005,
  GL_FUNC_ADD =                       0x8006,
  GL_MIN =                            0x8007,
  GL_MAX =                            0x8008,
  GL_BLEND_EQUATION =                 0x8009,
  GL_FUNC_SUBTRACT =                  0x800A,
  GL_FUNC_REVERSE_SUBTRACT =          0x800B,
  GL_TEXTURE0 =                       0x84C0,
  GL_TEXTURE1 =                       0x84C1,
  GL_TEXTURE2 =                       0x84C2,
  GL_TEXTURE3 =                       0x84C3,
  GL_TEXTURE4 =                       0x84C4,
  GL_TEXTURE5 =                       0x84C5,
  GL_TEXTURE6 =                       0x84C6,
  GL_TEXTURE7 =                       0x84C7,
  GL_TEXTURE8 =                       0x84C8,
  GL_TEXTURE9 =                       0x84C9,
  GL_TEXTURE10 =                      0x84CA,
  GL_TEXTURE11 =                      0x84CB,
  GL_TEXTURE12 =                      0x84CC,
  GL_TEXTURE13 =                      0x84CD,
  GL_TEXTURE14 =                      0x84CE,
  GL_TEXTURE15 =                      0x84CF,
  GL_TEXTURE16 =                      0x84D0,
  GL_TEXTURE17 =                      0x84D1,
  GL_TEXTURE18 =                      0x84D2,
  GL_TEXTURE19 =                      0x84D3,
  GL_TEXTURE20 =                      0x84D4,
  GL_TEXTURE21 =                      0x84D5,
  GL_TEXTURE22 =                      0x84D6,
  GL_TEXTURE23 =                      0x84D7,
  GL_TEXTURE24 =                      0x84D8,
  GL_TEXTURE25 =                      0x84D9,
  GL_TEXTURE26 =                      0x84DA,
  GL_TEXTURE27 =                      0x84DB,
  GL_TEXTURE28 =                      0x84DC,
  GL_TEXTURE29 =                      0x84DD,
  GL_TEXTURE30 =                      0x84DE,
  GL_TEXTURE31 =                      0x84DF,
  GL_ACTIVE_TEXTURE =                 0x84E0,
  GL_MULTISAMPLE =                    0x809D,
  GL_SAMPLE_ALPHA_TO_COVERAGE =       0x809E,
  GL_SAMPLE_ALPHA_TO_ONE =            0x809F,
  GL_SAMPLE_COVERAGE =                0x80A0,
  GL_SAMPLE_BUFFERS =                 0x80A8,
  GL_SAMPLES =                        0x80A9,
  GL_SAMPLE_COVERAGE_VALUE =          0x80AA,
  GL_SAMPLE_COVERAGE_INVERT =         0x80AB,
  GL_TEXTURE_CUBE_MAP =               0x8513,
  GL_TEXTURE_BINDING_CUBE_MAP =       0x8514,
  GL_TEXTURE_CUBE_MAP_POSITIVE_X =    0x8515,
  GL_TEXTURE_CUBE_MAP_NEGATIVE_X =    0x8516,
  GL_TEXTURE_CUBE_MAP_POSITIVE_Y =    0x8517,
  GL_TEXTURE_CUBE_MAP_NEGATIVE_Y =    0x8518,
  GL_TEXTURE_CUBE_MAP_POSITIVE_Z =    0x8519,
  GL_TEXTURE_CUBE_MAP_NEGATIVE_Z =    0x851A,
  GL_PROXY_TEXTURE_CUBE_MAP =         0x851B,
  GL_MAX_CUBE_MAP_TEXTURE_SIZE =      0x851C,
  GL_COMPRESSED_RGB =                 0x84ED,
  GL_COMPRESSED_RGBA =                0x84EE,
  GL_TEXTURE_COMPRESSION_HINT =       0x84EF,
  GL_TEXTURE_COMPRESSED_IMAGE_SIZE =  0x86A0,
  GL_TEXTURE_COMPRESSED =             0x86A1,
  GL_NUM_COMPRESSED_TEXTURE_FORMATS = 0x86A2,
  GL_COMPRESSED_TEXTURE_FORMATS =     0x86A3,
  GL_CLAMP_TO_BORDER =                0x812D,
  GL_BLEND_DST_RGB =                  0x80C8,
  GL_BLEND_SRC_RGB =                  0x80C9,
  GL_BLEND_DST_ALPHA =                0x80CA,
  GL_BLEND_SRC_ALPHA =                0x80CB,
  GL_POINT_FADE_THRESHOLD_SIZE =      0x8128,
  GL_DEPTH_COMPONENT16 =              0x81A5,
  GL_DEPTH_COMPONENT24 =              0x81A6,
  GL_DEPTH_COMPONENT32 =              0x81A7,
  GL_MIRRORED_REPEAT =                0x8370,
  GL_MAX_TEXTURE_LOD_BIAS =           0x84FD,
  GL_TEXTURE_LOD_BIAS =               0x8501,
  GL_INCR_WRAP =                      0x8507,
  GL_DECR_WRAP =                      0x8508,
  GL_TEXTURE_DEPTH_SIZE =             0x884A,
  GL_TEXTURE_COMPARE_MODE =           0x884C,
  GL_TEXTURE_COMPARE_FUNC =           0x884D,
  GL_BUFFER_SIZE =                    0x8764,
  GL_BUFFER_USAGE =                   0x8765,
  GL_QUERY_COUNTER_BITS =             0x8864,
  GL_CURRENT_QUERY =                  0x8865,
  GL_QUERY_RESULT =                   0x8866,
  GL_QUERY_RESULT_AVAILABLE =         0x8867,
  GL_ARRAY_BUFFER =                   0x8892,
  GL_ELEMENT_ARRAY_BUFFER =           0x8893,
  GL_ARRAY_BUFFER_BINDING =           0x8894,
  GL_ELEMENT_ARRAY_BUFFER_BINDING =   0x8895,
  GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING = 0x889F,
  GL_READ_ONLY =                      0x88B8,
  GL_WRITE_ONLY =                     0x88B9,
  GL_READ_WRITE =                     0x88BA,
  GL_BUFFER_ACCESS =                  0x88BB,
  GL_BUFFER_MAPPED =                  0x88BC,
  GL_BUFFER_MAP_POINTER =             0x88BD,
  GL_STREAM_DRAW =                    0x88E0,
  GL_STREAM_READ =                    0x88E1,
  GL_STREAM_COPY =                    0x88E2,
  GL_STATIC_DRAW =                    0x88E4,
  GL_STATIC_READ =                    0x88E5,
  GL_STATIC_COPY =                    0x88E6,
  GL_DYNAMIC_DRAW =                   0x88E8,
  GL_DYNAMIC_READ =                   0x88E9,
  GL_DYNAMIC_COPY =                   0x88EA,
  GL_SAMPLES_PASSED =                 0x8914,
  GL_BLEND_EQUATION_RGB =             0x8009,
  GL_VERTEX_ATTRIB_ARRAY_ENABLED =    0x8622,
  GL_VERTEX_ATTRIB_ARRAY_SIZE =       0x8623,
  GL_VERTEX_ATTRIB_ARRAY_STRIDE =     0x8624,
  GL_VERTEX_ATTRIB_ARRAY_TYPE =       0x8625,
  GL_CURRENT_VERTEX_ATTRIB =          0x8626,
  GL_VERTEX_PROGRAM_POINT_SIZE =      0x8642,
  GL_VERTEX_ATTRIB_ARRAY_POINTER =    0x8645,
  GL_STENCIL_BACK_FUNC =              0x8800,
  GL_STENCIL_BACK_FAIL =              0x8801,
  GL_STENCIL_BACK_PASS_DEPTH_FAIL =   0x8802,
  GL_STENCIL_BACK_PASS_DEPTH_PASS =   0x8803,
  GL_MAX_DRAW_BUFFERS =               0x8824,
  GL_DRAW_BUFFER0 =                   0x8825,
  GL_DRAW_BUFFER1 =                   0x8826,
  GL_DRAW_BUFFER2 =                   0x8827,
  GL_DRAW_BUFFER3 =                   0x8828,
  GL_DRAW_BUFFER4 =                   0x8829,
  GL_DRAW_BUFFER5 =                   0x882A,
  GL_DRAW_BUFFER6 =                   0x882B,
  GL_DRAW_BUFFER7 =                   0x882C,
  GL_DRAW_BUFFER8 =                   0x882D,
  GL_DRAW_BUFFER9 =                   0x882E,
  GL_DRAW_BUFFER10 =                  0x882F,
  GL_DRAW_BUFFER11 =                  0x8830,
  GL_DRAW_BUFFER12 =                  0x8831,
  GL_DRAW_BUFFER13 =                  0x8832,
  GL_DRAW_BUFFER14 =                  0x8833,
  GL_DRAW_BUFFER15 =                  0x8834,
  GL_BLEND_EQUATION_ALPHA =           0x883D,
  GL_MAX_VERTEX_ATTRIBS =             0x8869,
  GL_VERTEX_ATTRIB_ARRAY_NORMALIZED = 0x886A,
  GL_MAX_TEXTURE_IMAGE_UNITS =        0x8872,
  GL_FRAGMENT_SHADER =                0x8B30,
  GL_VERTEX_SHADER =                  0x8B31,
  GL_MAX_FRAGMENT_UNIFORM_COMPONENTS = 0x8B49,
  GL_MAX_VERTEX_UNIFORM_COMPONENTS =  0x8B4A,
  GL_MAX_VARYING_FLOATS =             0x8B4B,
  GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS = 0x8B4C,
  GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS = 0x8B4D,
  GL_SHADER_TYPE =                    0x8B4F,
  GL_FLOAT_VEC2 =                     0x8B50,
  GL_FLOAT_VEC3 =                     0x8B51,
  GL_FLOAT_VEC4 =                     0x8B52,
  GL_INT_VEC2 =                       0x8B53,
  GL_INT_VEC3 =                       0x8B54,
  GL_INT_VEC4 =                       0x8B55,
  GL_BOOL =                           0x8B56,
  GL_BOOL_VEC2 =                      0x8B57,
  GL_BOOL_VEC3 =                      0x8B58,
  GL_BOOL_VEC4 =                      0x8B59,
  GL_FLOAT_MAT2 =                     0x8B5A,
  GL_FLOAT_MAT3 =                     0x8B5B,
  GL_FLOAT_MAT4 =                     0x8B5C,
  GL_SAMPLER_1D =                     0x8B5D,
  GL_SAMPLER_2D =                     0x8B5E,
  GL_SAMPLER_3D =                     0x8B5F,
  GL_SAMPLER_CUBE =                   0x8B60,
  GL_SAMPLER_1D_SHADOW =              0x8B61,
  GL_SAMPLER_2D_SHADOW =              0x8B62,
  GL_DELETE_STATUS =                  0x8B80,
  GL_COMPILE_STATUS =                 0x8B81,
  GL_LINK_STATUS =                    0x8B82,
  GL_VALIDATE_STATUS =                0x8B83,
  GL_INFO_LOG_LENGTH =                0x8B84,
  GL_ATTACHED_SHADERS =               0x8B85,
  GL_ACTIVE_UNIFORMS =                0x8B86,
  GL_ACTIVE_UNIFORM_MAX_LENGTH =      0x8B87,
  GL_SHADER_SOURCE_LENGTH =           0x8B88,
  GL_ACTIVE_ATTRIBUTES =              0x8B89,
  GL_ACTIVE_ATTRIBUTE_MAX_LENGTH =    0x8B8A,
  GL_FRAGMENT_SHADER_DERIVATIVE_HINT = 0x8B8B,
  GL_SHADING_LANGUAGE_VERSION =       0x8B8C,
  GL_CURRENT_PROGRAM =                0x8B8D,
  GL_POINT_SPRITE_COORD_ORIGIN =      0x8CA0,
  GL_LOWER_LEFT =                     0x8CA1,
  GL_UPPER_LEFT =                     0x8CA2,
  GL_STENCIL_BACK_REF =               0x8CA3,
  GL_STENCIL_BACK_VALUE_MASK =        0x8CA4,
  GL_STENCIL_BACK_WRITEMASK =         0x8CA5,
  GL_PIXEL_PACK_BUFFER =              0x88EB,
  GL_PIXEL_UNPACK_BUFFER =            0x88EC,
  GL_PIXEL_PACK_BUFFER_BINDING =      0x88ED,
  GL_PIXEL_UNPACK_BUFFER_BINDING =    0x88EF,
  GL_FLOAT_MAT2x3 =                   0x8B65,
  GL_FLOAT_MAT2x4 =                   0x8B66,
  GL_FLOAT_MAT3x2 =                   0x8B67,
  GL_FLOAT_MAT3x4 =                   0x8B68,
  GL_FLOAT_MAT4x2 =                   0x8B69,
  GL_FLOAT_MAT4x3 =                   0x8B6A,
  GL_SRGB =                           0x8C40,
  GL_SRGB8 =                          0x8C41,
  GL_SRGB_ALPHA =                     0x8C42,
  GL_SRGB8_ALPHA8 =                   0x8C43,
  GL_COMPRESSED_SRGB =                0x8C48,
  GL_COMPRESSED_SRGB_ALPHA =          0x8C49,
  GL_COMPARE_REF_TO_TEXTURE =         0x884E,
  GL_CLIP_DISTANCE0 =                 0x3000,
  GL_CLIP_DISTANCE1 =                 0x3001,
  GL_CLIP_DISTANCE2 =                 0x3002,
  GL_CLIP_DISTANCE3 =                 0x3003,
  GL_CLIP_DISTANCE4 =                 0x3004,
  GL_CLIP_DISTANCE5 =                 0x3005,
  GL_CLIP_DISTANCE6 =                 0x3006,
  GL_CLIP_DISTANCE7 =                 0x3007,
  GL_MAX_CLIP_DISTANCES =             0x0D32,
  GL_MAJOR_VERSION =                  0x821B,
  GL_MINOR_VERSION =                  0x821C,
  GL_NUM_EXTENSIONS =                 0x821D,
  GL_CONTEXT_FLAGS =                  0x821E,
  GL_COMPRESSED_RED =                 0x8225,
  GL_COMPRESSED_RG =                  0x8226,
  GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT = 0x0001,
  GL_RGBA32F =                        0x8814,
  GL_RGB32F =                         0x8815,
  GL_RGBA16F =                        0x881A,
  GL_RGB16F =                         0x881B,
  GL_VERTEX_ATTRIB_ARRAY_INTEGER =    0x88FD,
  GL_MAX_ARRAY_TEXTURE_LAYERS =       0x88FF,
  GL_MIN_PROGRAM_TEXEL_OFFSET =       0x8904,
  GL_MAX_PROGRAM_TEXEL_OFFSET =       0x8905,
  GL_CLAMP_READ_COLOR =               0x891C,
  GL_FIXED_ONLY =                     0x891D,
  GL_MAX_VARYING_COMPONENTS =         0x8B4B,
  GL_TEXTURE_1D_ARRAY =               0x8C18,
  GL_PROXY_TEXTURE_1D_ARRAY =         0x8C19,
  GL_TEXTURE_2D_ARRAY =               0x8C1A,
  GL_PROXY_TEXTURE_2D_ARRAY =         0x8C1B,
  GL_TEXTURE_BINDING_1D_ARRAY =       0x8C1C,
  GL_TEXTURE_BINDING_2D_ARRAY =       0x8C1D,
  GL_R11F_G11F_B10F =                 0x8C3A,
  GL_UNSIGNED_INT_10F_11F_11F_REV =   0x8C3B,
  GL_RGB9_E5 =                        0x8C3D,
  GL_UNSIGNED_INT_5_9_9_9_REV =       0x8C3E,
  GL_TEXTURE_SHARED_SIZE =            0x8C3F,
  GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH = 0x8C76,
  GL_TRANSFORM_FEEDBACK_BUFFER_MODE = 0x8C7F,
  GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS = 0x8C80,
  GL_TRANSFORM_FEEDBACK_VARYINGS =    0x8C83,
  GL_TRANSFORM_FEEDBACK_BUFFER_START = 0x8C84,
  GL_TRANSFORM_FEEDBACK_BUFFER_SIZE = 0x8C85,
  GL_PRIMITIVES_GENERATED =           0x8C87,
  GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN = 0x8C88,
  GL_RASTERIZER_DISCARD =             0x8C89,
  GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS = 0x8C8A,
  GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS = 0x8C8B,
  GL_INTERLEAVED_ATTRIBS =            0x8C8C,
  GL_SEPARATE_ATTRIBS =               0x8C8D,
  GL_TRANSFORM_FEEDBACK_BUFFER =      0x8C8E,
  GL_TRANSFORM_FEEDBACK_BUFFER_BINDING = 0x8C8F,
  GL_RGBA32UI =                       0x8D70,
  GL_RGB32UI =                        0x8D71,
  GL_RGBA16UI =                       0x8D76,
  GL_RGB16UI =                        0x8D77,
  GL_RGBA8UI =                        0x8D7C,
  GL_RGB8UI =                         0x8D7D,
  GL_RGBA32I =                        0x8D82,
  GL_RGB32I =                         0x8D83,
  GL_RGBA16I =                        0x8D88,
  GL_RGB16I =                         0x8D89,
  GL_RGBA8I =                         0x8D8E,
  GL_RGB8I =                          0x8D8F,
  GL_RED_INTEGER =                    0x8D94,
  GL_GREEN_INTEGER =                  0x8D95,
  GL_BLUE_INTEGER =                   0x8D96,
  GL_RGB_INTEGER =                    0x8D98,
  GL_RGBA_INTEGER =                   0x8D99,
  GL_BGR_INTEGER =                    0x8D9A,
  GL_BGRA_INTEGER =                   0x8D9B,
  GL_SAMPLER_1D_ARRAY =               0x8DC0,
  GL_SAMPLER_2D_ARRAY =               0x8DC1,
  GL_SAMPLER_1D_ARRAY_SHADOW =        0x8DC3,
  GL_SAMPLER_2D_ARRAY_SHADOW =        0x8DC4,
  GL_SAMPLER_CUBE_SHADOW =            0x8DC5,
  GL_UNSIGNED_INT_VEC2 =              0x8DC6,
  GL_UNSIGNED_INT_VEC3 =              0x8DC7,
  GL_UNSIGNED_INT_VEC4 =              0x8DC8,
  GL_INT_SAMPLER_1D =                 0x8DC9,
  GL_INT_SAMPLER_2D =                 0x8DCA,
  GL_INT_SAMPLER_3D =                 0x8DCB,
  GL_INT_SAMPLER_CUBE =               0x8DCC,
  GL_INT_SAMPLER_1D_ARRAY =           0x8DCE,
  GL_INT_SAMPLER_2D_ARRAY =           0x8DCF,
  GL_UNSIGNED_INT_SAMPLER_1D =        0x8DD1,
  GL_UNSIGNED_INT_SAMPLER_2D =        0x8DD2,
  GL_UNSIGNED_INT_SAMPLER_3D =        0x8DD3,
  GL_UNSIGNED_INT_SAMPLER_CUBE =      0x8DD4,
  GL_UNSIGNED_INT_SAMPLER_1D_ARRAY =  0x8DD6,
  GL_UNSIGNED_INT_SAMPLER_2D_ARRAY =  0x8DD7,
  GL_QUERY_WAIT =                     0x8E13,
  GL_QUERY_NO_WAIT =                  0x8E14,
  GL_QUERY_BY_REGION_WAIT =           0x8E15,
  GL_QUERY_BY_REGION_NO_WAIT =        0x8E16,
  GL_BUFFER_ACCESS_FLAGS =            0x911F,
  GL_BUFFER_MAP_LENGTH =              0x9120,
  GL_BUFFER_MAP_OFFSET =              0x9121,
  GL_SAMPLER_2D_RECT =                0x8B63,
  GL_SAMPLER_2D_RECT_SHADOW =         0x8B64,
  GL_SAMPLER_BUFFER =                 0x8DC2,
  GL_INT_SAMPLER_2D_RECT =            0x8DCD,
  GL_INT_SAMPLER_BUFFER =             0x8DD0,
  GL_UNSIGNED_INT_SAMPLER_2D_RECT =   0x8DD5,
  GL_UNSIGNED_INT_SAMPLER_BUFFER =    0x8DD8,
  GL_TEXTURE_BUFFER =                 0x8C2A,
  GL_MAX_TEXTURE_BUFFER_SIZE =        0x8C2B,
  GL_TEXTURE_BINDING_BUFFER =         0x8C2C,
  GL_TEXTURE_BUFFER_DATA_STORE_BINDING = 0x8C2D,
  GL_TEXTURE_BUFFER_FORMAT =          0x8C2E,
  GL_TEXTURE_RECTANGLE =              0x84F5,
  GL_TEXTURE_BINDING_RECTANGLE =      0x84F6,
  GL_PROXY_TEXTURE_RECTANGLE =        0x84F7,
  GL_MAX_RECTANGLE_TEXTURE_SIZE =     0x84F8,
  GL_RED_SNORM =                      0x8F90,
  GL_RG_SNORM =                       0x8F91,
  GL_RGB_SNORM =                      0x8F92,
  GL_RGBA_SNORM =                     0x8F93,
  GL_R8_SNORM =                       0x8F94,
  GL_RG8_SNORM =                      0x8F95,
  GL_RGB8_SNORM =                     0x8F96,
  GL_RGBA8_SNORM =                    0x8F97,
  GL_R16_SNORM =                      0x8F98,
  GL_RG16_SNORM =                     0x8F99,
  GL_RGB16_SNORM =                    0x8F9A,
  GL_RGBA16_SNORM =                   0x8F9B,
  GL_SIGNED_NORMALIZED =              0x8F9C,
  GL_PRIMITIVE_RESTART =              0x8F9D,
  GL_PRIMITIVE_RESTART_INDEX =        0x8F9E,
  GL_CONTEXT_CORE_PROFILE_BIT =       0x00000001,
  GL_CONTEXT_COMPATIBILITY_PROFILE_BIT = 0x00000002,
  GL_LINES_ADJACENCY =                0x000A,
  GL_LINE_STRIP_ADJACENCY =           0x000B,
  GL_TRIANGLES_ADJACENCY =            0x000C,
  GL_TRIANGLE_STRIP_ADJACENCY =       0x000D,
  GL_PROGRAM_POINT_SIZE =             0x8642,
  GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS = 0x8C29,
  GL_FRAMEBUFFER_ATTACHMENT_LAYERED = 0x8DA7,
  GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS = 0x8DA8,
  GL_GEOMETRY_SHADER =                0x8DD9,
  GL_GEOMETRY_VERTICES_OUT =          0x8916,
  GL_GEOMETRY_INPUT_TYPE =            0x8917,
  GL_GEOMETRY_OUTPUT_TYPE =           0x8918,
  GL_MAX_GEOMETRY_UNIFORM_COMPONENTS = 0x8DDF,
  GL_MAX_GEOMETRY_OUTPUT_VERTICES =   0x8DE0,
  GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS = 0x8DE1,
  GL_MAX_VERTEX_OUTPUT_COMPONENTS =   0x9122,
  GL_MAX_GEOMETRY_INPUT_COMPONENTS =  0x9123,
  GL_MAX_GEOMETRY_OUTPUT_COMPONENTS = 0x9124,
  GL_MAX_FRAGMENT_INPUT_COMPONENTS =  0x9125,
  GL_CONTEXT_PROFILE_MASK =           0x9126,
  GL_VERTEX_ATTRIB_ARRAY_DIVISOR =    0x88FE,
  GL_SAMPLE_SHADING =                 0x8C36,
  GL_MIN_SAMPLE_SHADING_VALUE =       0x8C37,
  GL_MIN_PROGRAM_TEXTURE_GATHER_OFFSET = 0x8E5E,
  GL_MAX_PROGRAM_TEXTURE_GATHER_OFFSET = 0x8E5F,
  GL_TEXTURE_CUBE_MAP_ARRAY =         0x9009,
  GL_TEXTURE_BINDING_CUBE_MAP_ARRAY = 0x900A,
  GL_PROXY_TEXTURE_CUBE_MAP_ARRAY =   0x900B,
  GL_SAMPLER_CUBE_MAP_ARRAY =         0x900C,
  GL_SAMPLER_CUBE_MAP_ARRAY_SHADOW =  0x900D,
  GL_INT_SAMPLER_CUBE_MAP_ARRAY =     0x900E,
  GL_UNSIGNED_INT_SAMPLER_CUBE_MAP_ARRAY = 0x900F,
  GL_DEPTH_COMPONENT32F =             0x8CAC,
  GL_DEPTH32F_STENCIL8 =              0x8CAD,
  GL_FLOAT_32_UNSIGNED_INT_24_8_REV = 0x8DAD,
  GL_INVALID_FRAMEBUFFER_OPERATION =  0x0506,
  GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING = 0x8210,
  GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE = 0x8211,
  GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE = 0x8212,
  GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE = 0x8213,
  GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE = 0x8214,
  GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE = 0x8215,
  GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE = 0x8216,
  GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE = 0x8217,
  GL_FRAMEBUFFER_DEFAULT =            0x8218,
  GL_FRAMEBUFFER_UNDEFINED =          0x8219,
  GL_DEPTH_STENCIL_ATTACHMENT =       0x821A,
  GL_MAX_RENDERBUFFER_SIZE =          0x84E8,
  GL_DEPTH_STENCIL =                  0x84F9,
  GL_UNSIGNED_INT_24_8 =              0x84FA,
  GL_DEPTH24_STENCIL8 =               0x88F0,
  GL_TEXTURE_STENCIL_SIZE =           0x88F1,
  GL_TEXTURE_RED_TYPE =               0x8C10,
  GL_TEXTURE_GREEN_TYPE =             0x8C11,
  GL_TEXTURE_BLUE_TYPE =              0x8C12,
  GL_TEXTURE_ALPHA_TYPE =             0x8C13,
  GL_TEXTURE_DEPTH_TYPE =             0x8C16,
  GL_UNSIGNED_NORMALIZED =            0x8C17,
  GL_FRAMEBUFFER_BINDING =            0x8CA6,
  GL_DRAW_FRAMEBUFFER_BINDING =       0x8CA6,
  GL_RENDERBUFFER_BINDING =           0x8CA7,
  GL_READ_FRAMEBUFFER =               0x8CA8,
  GL_DRAW_FRAMEBUFFER =               0x8CA9,
  GL_READ_FRAMEBUFFER_BINDING =       0x8CAA,
  GL_RENDERBUFFER_SAMPLES =           0x8CAB,
  GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE = 0x8CD0,
  GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME = 0x8CD1,
  GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL = 0x8CD2,
  GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE = 0x8CD3,
  GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER = 0x8CD4,
  GL_FRAMEBUFFER_COMPLETE =           0x8CD5,
  GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT = 0x8CD6,
  GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = 0x8CD7,
  GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER = 0x8CDB,
  GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER = 0x8CDC,
  GL_FRAMEBUFFER_UNSUPPORTED =        0x8CDD,
  GL_MAX_COLOR_ATTACHMENTS =          0x8CDF,
  GL_COLOR_ATTACHMENT0 =              0x8CE0,
  GL_COLOR_ATTACHMENT1 =              0x8CE1,
  GL_COLOR_ATTACHMENT2 =              0x8CE2,
  GL_COLOR_ATTACHMENT3 =              0x8CE3,
  GL_COLOR_ATTACHMENT4 =              0x8CE4,
  GL_COLOR_ATTACHMENT5 =              0x8CE5,
  GL_COLOR_ATTACHMENT6 =              0x8CE6,
  GL_COLOR_ATTACHMENT7 =              0x8CE7,
  GL_COLOR_ATTACHMENT8 =              0x8CE8,
  GL_COLOR_ATTACHMENT9 =              0x8CE9,
  GL_COLOR_ATTACHMENT10 =             0x8CEA,
  GL_COLOR_ATTACHMENT11 =             0x8CEB,
  GL_COLOR_ATTACHMENT12 =             0x8CEC,
  GL_COLOR_ATTACHMENT13 =             0x8CED,
  GL_COLOR_ATTACHMENT14 =             0x8CEE,
  GL_COLOR_ATTACHMENT15 =             0x8CEF,
  GL_DEPTH_ATTACHMENT =               0x8D00,
  GL_STENCIL_ATTACHMENT =             0x8D20,
  GL_FRAMEBUFFER =                    0x8D40,
  GL_RENDERBUFFER =                   0x8D41,
  GL_RENDERBUFFER_WIDTH =             0x8D42,
  GL_RENDERBUFFER_HEIGHT =            0x8D43,
  GL_RENDERBUFFER_INTERNAL_FORMAT =   0x8D44,
  GL_STENCIL_INDEX1 =                 0x8D46,
  GL_STENCIL_INDEX4 =                 0x8D47,
  GL_STENCIL_INDEX8 =                 0x8D48,
  GL_STENCIL_INDEX16 =                0x8D49,
  GL_RENDERBUFFER_RED_SIZE =          0x8D50,
  GL_RENDERBUFFER_GREEN_SIZE =        0x8D51,
  GL_RENDERBUFFER_BLUE_SIZE =         0x8D52,
  GL_RENDERBUFFER_ALPHA_SIZE =        0x8D53,
  GL_RENDERBUFFER_DEPTH_SIZE =        0x8D54,
  GL_RENDERBUFFER_STENCIL_SIZE =      0x8D55,
  GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE = 0x8D56,
  GL_MAX_SAMPLES =                    0x8D57,
  GL_FRAMEBUFFER_SRGB =               0x8DB9,
  GL_HALF_FLOAT =                     0x140B,
  GL_MAP_READ_BIT =                   0x0001,
  GL_MAP_WRITE_BIT =                  0x0002,
  GL_MAP_INVALIDATE_RANGE_BIT =       0x0004,
  GL_MAP_INVALIDATE_BUFFER_BIT =      0x0008,
  GL_MAP_FLUSH_EXPLICIT_BIT =         0x0010,
  GL_MAP_UNSYNCHRONIZED_BIT =         0x0020,
  GL_COMPRESSED_RED_RGTC1 =           0x8DBB,
  GL_COMPRESSED_SIGNED_RED_RGTC1 =    0x8DBC,
  GL_COMPRESSED_RG_RGTC2 =            0x8DBD,
  GL_COMPRESSED_SIGNED_RG_RGTC2 =     0x8DBE,
  GL_RG =                             0x8227,
  GL_RG_INTEGER =                     0x8228,
  GL_R8 =                             0x8229,
  GL_R16 =                            0x822A,
  GL_RG8 =                            0x822B,
  GL_RG16 =                           0x822C,
  GL_R16F =                           0x822D,
  GL_R32F =                           0x822E,
  GL_RG16F =                          0x822F,
  GL_RG32F =                          0x8230,
  GL_R8I =                            0x8231,
  GL_R8UI =                           0x8232,
  GL_R16I =                           0x8233,
  GL_R16UI =                          0x8234,
  GL_R32I =                           0x8235,
  GL_R32UI =                          0x8236,
  GL_RG8I =                           0x8237,
  GL_RG8UI =                          0x8238,
  GL_RG16I =                          0x8239,
  GL_RG16UI =                         0x823A,
  GL_RG32I =                          0x823B,
  GL_RG32UI =                         0x823C,
  GL_VERTEX_ARRAY_BINDING =           0x85B5,
  GL_UNIFORM_BUFFER =                 0x8A11,
  GL_UNIFORM_BUFFER_BINDING =         0x8A28,
  GL_UNIFORM_BUFFER_START =           0x8A29,
  GL_UNIFORM_BUFFER_SIZE =            0x8A2A,
  GL_MAX_VERTEX_UNIFORM_BLOCKS =      0x8A2B,
  GL_MAX_GEOMETRY_UNIFORM_BLOCKS =    0x8A2C,
  GL_MAX_FRAGMENT_UNIFORM_BLOCKS =    0x8A2D,
  GL_MAX_COMBINED_UNIFORM_BLOCKS =    0x8A2E,
  GL_MAX_UNIFORM_BUFFER_BINDINGS =    0x8A2F,
  GL_MAX_UNIFORM_BLOCK_SIZE =         0x8A30,
  GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS = 0x8A31,
  GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS = 0x8A32,
  GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS = 0x8A33,
  GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT = 0x8A34,
  GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH = 0x8A35,
  GL_ACTIVE_UNIFORM_BLOCKS =          0x8A36,
  GL_UNIFORM_TYPE =                   0x8A37,
  GL_UNIFORM_SIZE =                   0x8A38,
  GL_UNIFORM_NAME_LENGTH =            0x8A39,
  GL_UNIFORM_BLOCK_INDEX =            0x8A3A,
  GL_UNIFORM_OFFSET =                 0x8A3B,
  GL_UNIFORM_ARRAY_STRIDE =           0x8A3C,
  GL_UNIFORM_MATRIX_STRIDE =          0x8A3D,
  GL_UNIFORM_IS_ROW_MAJOR =           0x8A3E,
  GL_UNIFORM_BLOCK_BINDING =          0x8A3F,
  GL_UNIFORM_BLOCK_DATA_SIZE =        0x8A40,
  GL_UNIFORM_BLOCK_NAME_LENGTH =      0x8A41,
  GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS =  0x8A42,
  GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES = 0x8A43,
  GL_UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER = 0x8A44,
  GL_UNIFORM_BLOCK_REFERENCED_BY_GEOMETRY_SHADER = 0x8A45,
  GL_UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER = 0x8A46,
  GL_INVALID_INDEX =                  0xFFFFFFFF,
  GL_COPY_READ_BUFFER =               0x8F36,
  GL_COPY_WRITE_BUFFER =              0x8F37,
  GL_DEPTH_CLAMP =                    0x864F,
  GL_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION = 0x8E4C,
  GL_FIRST_VERTEX_CONVENTION =        0x8E4D,
  GL_LAST_VERTEX_CONVENTION =         0x8E4E,
  GL_PROVOKING_VERTEX =               0x8E4F,
  GL_TEXTURE_CUBE_MAP_SEAMLESS =      0x884F,
  GL_MAX_SERVER_WAIT_TIMEOUT =        0x9111,
  GL_OBJECT_TYPE =                    0x9112,
  GL_SYNC_CONDITION =                 0x9113,
  GL_SYNC_STATUS =                    0x9114,
  GL_SYNC_FLAGS =                     0x9115,
  GL_SYNC_FENCE =                     0x9116,
  GL_SYNC_GPU_COMMANDS_COMPLETE =     0x9117,
  GL_UNSIGNALED =                     0x9118,
  GL_SIGNALED =                       0x9119,
  GL_ALREADY_SIGNALED =               0x911A,
  GL_TIMEOUT_EXPIRED =                0x911B,
  GL_CONDITION_SATISFIED =            0x911C,
  GL_WAIT_FAILED =                    0x911D,
  GL_SYNC_FLUSH_COMMANDS_BIT =        0x00000001,
  --GLuint GL_TIMEOUT_IGNORED =              0xFFFFFFFFFFFFFFFFull,
  GL_SAMPLE_POSITION =                0x8E50,
  GL_SAMPLE_MASK =                    0x8E51,
  GL_SAMPLE_MASK_VALUE =              0x8E52,
  GL_MAX_SAMPLE_MASK_WORDS =          0x8E59,
  GL_TEXTURE_2D_MULTISAMPLE =         0x9100,
  GL_PROXY_TEXTURE_2D_MULTISAMPLE =   0x9101,
  GL_TEXTURE_2D_MULTISAMPLE_ARRAY =   0x9102,
  GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY = 0x9103,
  GL_TEXTURE_BINDING_2D_MULTISAMPLE = 0x9104,
  GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY = 0x9105,
  GL_TEXTURE_SAMPLES =                0x9106,
  GL_TEXTURE_FIXED_SAMPLE_LOCATIONS = 0x9107,
  GL_SAMPLER_2D_MULTISAMPLE =         0x9108,
  GL_INT_SAMPLER_2D_MULTISAMPLE =     0x9109,
  GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE = 0x910A,
  GL_SAMPLER_2D_MULTISAMPLE_ARRAY =   0x910B,
  GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY = 0x910C,
  GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY = 0x910D,
  GL_MAX_COLOR_TEXTURE_SAMPLES =      0x910E,
  GL_MAX_DEPTH_TEXTURE_SAMPLES =      0x910F,
  GL_MAX_INTEGER_SAMPLES =            0x9110,
  GL_SAMPLE_SHADING_ARB =             0x8C36,
  GL_MIN_SAMPLE_SHADING_VALUE_ARB =   0x8C37,
  GL_TEXTURE_CUBE_MAP_ARRAY_ARB =     0x9009,
  GL_TEXTURE_BINDING_CUBE_MAP_ARRAY_ARB = 0x900A,
  GL_PROXY_TEXTURE_CUBE_MAP_ARRAY_ARB = 0x900B,
  GL_SAMPLER_CUBE_MAP_ARRAY_ARB =     0x900C,
  GL_SAMPLER_CUBE_MAP_ARRAY_SHADOW_ARB = 0x900D,
  GL_INT_SAMPLER_CUBE_MAP_ARRAY_ARB = 0x900E,
  GL_UNSIGNED_INT_SAMPLER_CUBE_MAP_ARRAY_ARB = 0x900F,
  GL_MIN_PROGRAM_TEXTURE_GATHER_OFFSET_ARB = 0x8E5E,
  GL_MAX_PROGRAM_TEXTURE_GATHER_OFFSET_ARB = 0x8E5F,
  GL_SHADER_INCLUDE_ARB =             0x8DAE,
  GL_NAMED_STRING_LENGTH_ARB =        0x8DE9,
  GL_NAMED_STRING_TYPE_ARB =          0x8DEA,
  GL_COMPRESSED_RGBA_BPTC_UNORM_ARB = 0x8E8C,
  GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB = 0x8E8D,
  GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB = 0x8E8E,
  GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB = 0x8E8F,
  GL_SRC1_COLOR =                     0x88F9,
  GL_ONE_MINUS_SRC1_COLOR =           0x88FA,
  GL_ONE_MINUS_SRC1_ALPHA =           0x88FB,
  GL_MAX_DUAL_SOURCE_DRAW_BUFFERS =   0x88FC,
  GL_ANY_SAMPLES_PASSED =             0x8C2F,
  GL_SAMPLER_BINDING =                0x8919,
  GL_RGB10_A2UI =                     0x906F,
  GL_TEXTURE_SWIZZLE_R =              0x8E42,
  GL_TEXTURE_SWIZZLE_G =              0x8E43,
  GL_TEXTURE_SWIZZLE_B =              0x8E44,
  GL_TEXTURE_SWIZZLE_A =              0x8E45,
  GL_TEXTURE_SWIZZLE_RGBA =           0x8E46,
  GL_TIME_ELAPSED =                   0x88BF,
  GL_TIMESTAMP =                      0x8E28,
  GL_INT_2_10_10_10_REV =             0x8D9F,
  GL_DRAW_INDIRECT_BUFFER =           0x8F3F,
  GL_DRAW_INDIRECT_BUFFER_BINDING =   0x8F43,
  GL_GEOMETRY_SHADER_INVOCATIONS =    0x887F,
  GL_MAX_GEOMETRY_SHADER_INVOCATIONS = 0x8E5A,
  GL_MIN_FRAGMENT_INTERPOLATION_OFFSET = 0x8E5B,
  GL_MAX_FRAGMENT_INTERPOLATION_OFFSET = 0x8E5C,
  GL_FRAGMENT_INTERPOLATION_OFFSET_BITS = 0x8E5D,
  GL_DOUBLE_VEC2 =                    0x8FFC,
  GL_DOUBLE_VEC3 =                    0x8FFD,
  GL_DOUBLE_VEC4 =                    0x8FFE,
  GL_DOUBLE_MAT2 =                    0x8F46,
  GL_DOUBLE_MAT3 =                    0x8F47,
  GL_DOUBLE_MAT4 =                    0x8F48,
  GL_DOUBLE_MAT2x3 =                  0x8F49,
  GL_DOUBLE_MAT2x4 =                  0x8F4A,
  GL_DOUBLE_MAT3x2 =                  0x8F4B,
  GL_DOUBLE_MAT3x4 =                  0x8F4C,
  GL_DOUBLE_MAT4x2 =                  0x8F4D,
  GL_DOUBLE_MAT4x3 =                  0x8F4E,
  GL_ACTIVE_SUBROUTINES =             0x8DE5,
  GL_ACTIVE_SUBROUTINE_UNIFORMS =     0x8DE6,
  GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS = 0x8E47,
  GL_ACTIVE_SUBROUTINE_MAX_LENGTH =   0x8E48,
  GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH = 0x8E49,
  GL_MAX_SUBROUTINES =                0x8DE7,
  GL_MAX_SUBROUTINE_UNIFORM_LOCATIONS = 0x8DE8,
  GL_NUM_COMPATIBLE_SUBROUTINES =     0x8E4A,
  GL_COMPATIBLE_SUBROUTINES =         0x8E4B,
  GL_PATCHES =                        0x000E,
  GL_PATCH_VERTICES =                 0x8E72,
  GL_PATCH_DEFAULT_INNER_LEVEL =      0x8E73,
  GL_PATCH_DEFAULT_OUTER_LEVEL =      0x8E74,
  GL_TESS_CONTROL_OUTPUT_VERTICES =   0x8E75,
  GL_TESS_GEN_MODE =                  0x8E76,
  GL_TESS_GEN_SPACING =               0x8E77,
  GL_TESS_GEN_VERTEX_ORDER =          0x8E78,
  GL_TESS_GEN_POINT_MODE =            0x8E79,
  GL_ISOLINES =                       0x8E7A,
  GL_FRACTIONAL_ODD =                 0x8E7B,
  GL_FRACTIONAL_EVEN =                0x8E7C,
  GL_MAX_PATCH_VERTICES =             0x8E7D,
  GL_MAX_TESS_GEN_LEVEL =             0x8E7E,
  GL_MAX_TESS_CONTROL_UNIFORM_COMPONENTS = 0x8E7F,
  GL_MAX_TESS_EVALUATION_UNIFORM_COMPONENTS = 0x8E80,
  GL_MAX_TESS_CONTROL_TEXTURE_IMAGE_UNITS = 0x8E81,
  GL_MAX_TESS_EVALUATION_TEXTURE_IMAGE_UNITS = 0x8E82,
  GL_MAX_TESS_CONTROL_OUTPUT_COMPONENTS = 0x8E83,
  GL_MAX_TESS_PATCH_COMPONENTS =      0x8E84,
  GL_MAX_TESS_CONTROL_TOTAL_OUTPUT_COMPONENTS = 0x8E85,
  GL_MAX_TESS_EVALUATION_OUTPUT_COMPONENTS = 0x8E86,
  GL_MAX_TESS_CONTROL_UNIFORM_BLOCKS = 0x8E89,
  GL_MAX_TESS_EVALUATION_UNIFORM_BLOCKS = 0x8E8A,
  GL_MAX_TESS_CONTROL_INPUT_COMPONENTS = 0x886C,
  GL_MAX_TESS_EVALUATION_INPUT_COMPONENTS = 0x886D,
  GL_MAX_COMBINED_TESS_CONTROL_UNIFORM_COMPONENTS = 0x8E1E,
  GL_MAX_COMBINED_TESS_EVALUATION_UNIFORM_COMPONENTS = 0x8E1F,
  GL_UNIFORM_BLOCK_REFERENCED_BY_TESS_CONTROL_SHADER = 0x84F0,
  GL_UNIFORM_BLOCK_REFERENCED_BY_TESS_EVALUATION_SHADER = 0x84F1,
  GL_TESS_EVALUATION_SHADER =         0x8E87,
  GL_TESS_CONTROL_SHADER =            0x8E88,
  GL_TRANSFORM_FEEDBACK =             0x8E22,
  GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED = 0x8E23,
  GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE = 0x8E24,
  GL_TRANSFORM_FEEDBACK_BINDING =     0x8E25,
  GL_MAX_TRANSFORM_FEEDBACK_BUFFERS = 0x8E70,
  GL_MAX_VERTEX_STREAMS =             0x8E71,
  GL_FIXED =                          0x140C,
  GL_IMPLEMENTATION_COLOR_READ_TYPE = 0x8B9A,
  GL_IMPLEMENTATION_COLOR_READ_FORMAT = 0x8B9B,
  GL_LOW_FLOAT =                      0x8DF0,
  GL_MEDIUM_FLOAT =                   0x8DF1,
  GL_HIGH_FLOAT =                     0x8DF2,
  GL_LOW_INT =                        0x8DF3,
  GL_MEDIUM_INT =                     0x8DF4,
  GL_HIGH_INT =                       0x8DF5,
  GL_SHADER_COMPILER =                0x8DFA,
  GL_NUM_SHADER_BINARY_FORMATS =      0x8DF9,
  GL_MAX_VERTEX_UNIFORM_VECTORS =     0x8DFB,
  GL_MAX_VARYING_VECTORS =            0x8DFC,
  GL_MAX_FRAGMENT_UNIFORM_VECTORS =   0x8DFD,
  GL_PROGRAM_BINARY_RETRIEVABLE_HINT = 0x8257,
  GL_PROGRAM_BINARY_LENGTH =          0x8741,
  GL_NUM_PROGRAM_BINARY_FORMATS =     0x87FE,
  GL_PROGRAM_BINARY_FORMATS =         0x87FF,
  GL_VERTEX_SHADER_BIT =              0x00000001,
  GL_FRAGMENT_SHADER_BIT =            0x00000002,
  GL_GEOMETRY_SHADER_BIT =            0x00000004,
  GL_TESS_CONTROL_SHADER_BIT =        0x00000008,
  GL_TESS_EVALUATION_SHADER_BIT =     0x00000010,
  GL_ALL_SHADER_BITS =                0xFFFFFFFF,
  GL_PROGRAM_SEPARABLE =              0x8258,
  GL_ACTIVE_PROGRAM =                 0x8259,
  GL_PROGRAM_PIPELINE_BINDING =       0x825A,
  GL_MAX_VIEWPORTS =                  0x825B,
  GL_VIEWPORT_SUBPIXEL_BITS =         0x825C,
  GL_VIEWPORT_BOUNDS_RANGE =          0x825D,
  GL_LAYER_PROVOKING_VERTEX =         0x825E,
  GL_VIEWPORT_INDEX_PROVOKING_VERTEX = 0x825F,
  GL_UNDEFINED_VERTEX =               0x8260,
  GL_SYNC_CL_EVENT_ARB =              0x8240,
  GL_SYNC_CL_EVENT_COMPLETE_ARB =     0x8241,
  GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB =   0x8242,
  GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_ARB = 0x8243,
  GL_DEBUG_CALLBACK_FUNCTION_ARB =    0x8244,
  GL_DEBUG_CALLBACK_USER_PARAM_ARB =  0x8245,
  GL_DEBUG_SOURCE_API_ARB =           0x8246,
  GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB = 0x8247,
  GL_DEBUG_SOURCE_SHADER_COMPILER_ARB = 0x8248,
  GL_DEBUG_SOURCE_THIRD_PARTY_ARB =   0x8249,
  GL_DEBUG_SOURCE_APPLICATION_ARB =   0x824A,
  GL_DEBUG_SOURCE_OTHER_ARB =         0x824B,
  GL_DEBUG_TYPE_ERROR_ARB =           0x824C,
  GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB = 0x824D,
  GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB = 0x824E,
  GL_DEBUG_TYPE_PORTABILITY_ARB =     0x824F,
  GL_DEBUG_TYPE_PERFORMANCE_ARB =     0x8250,
  GL_DEBUG_TYPE_OTHER_ARB =           0x8251,
  GL_MAX_DEBUG_MESSAGE_LENGTH_ARB =   0x9143,
  GL_MAX_DEBUG_LOGGED_MESSAGES_ARB =  0x9144,
  GL_DEBUG_LOGGED_MESSAGES_ARB =      0x9145,
  GL_DEBUG_SEVERITY_HIGH_ARB =        0x9146,
  GL_DEBUG_SEVERITY_MEDIUM_ARB =      0x9147,
  GL_DEBUG_SEVERITY_LOW_ARB =         0x9148,
  GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB = 0x00000004,
  GL_LOSE_CONTEXT_ON_RESET_ARB =      0x8252,
  GL_GUILTY_CONTEXT_RESET_ARB =       0x8253,
  GL_INNOCENT_CONTEXT_RESET_ARB =     0x8254,
  GL_UNKNOWN_CONTEXT_RESET_ARB =      0x8255,
  GL_RESET_NOTIFICATION_STRATEGY_ARB = 0x8256,
  GL_NO_RESET_NOTIFICATION_ARB =      0x8261,
  GL_UNPACK_COMPRESSED_BLOCK_WIDTH =  0x9127,
  GL_UNPACK_COMPRESSED_BLOCK_HEIGHT = 0x9128,
  GL_UNPACK_COMPRESSED_BLOCK_DEPTH =  0x9129,
  GL_UNPACK_COMPRESSED_BLOCK_SIZE =   0x912A,
  GL_PACK_COMPRESSED_BLOCK_WIDTH =    0x912B,
  GL_PACK_COMPRESSED_BLOCK_HEIGHT =   0x912C,
  GL_PACK_COMPRESSED_BLOCK_DEPTH =    0x912D,
  GL_PACK_COMPRESSED_BLOCK_SIZE =     0x912E,
  GL_NUM_SAMPLE_COUNTS =              0x9380,
  GL_MIN_MAP_BUFFER_ALIGNMENT =       0x90BC,
  GL_ATOMIC_COUNTER_BUFFER =          0x92C0,
  GL_ATOMIC_COUNTER_BUFFER_BINDING =  0x92C1,
  GL_ATOMIC_COUNTER_BUFFER_START =    0x92C2,
  GL_ATOMIC_COUNTER_BUFFER_SIZE =     0x92C3,
  GL_ATOMIC_COUNTER_BUFFER_DATA_SIZE = 0x92C4,
  GL_ATOMIC_COUNTER_BUFFER_ACTIVE_ATOMIC_COUNTERS = 0x92C5,
  GL_ATOMIC_COUNTER_BUFFER_ACTIVE_ATOMIC_COUNTER_INDICES = 0x92C6,
  GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_VERTEX_SHADER = 0x92C7,
  GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_TESS_CONTROL_SHADER = 0x92C8,
  GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_TESS_EVALUATION_SHADER = 0x92C9,
  GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_GEOMETRY_SHADER = 0x92CA,
  GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_FRAGMENT_SHADER = 0x92CB,
  GL_MAX_VERTEX_ATOMIC_COUNTER_BUFFERS = 0x92CC,
  GL_MAX_TESS_CONTROL_ATOMIC_COUNTER_BUFFERS = 0x92CD,
  GL_MAX_TESS_EVALUATION_ATOMIC_COUNTER_BUFFERS = 0x92CE,
  GL_MAX_GEOMETRY_ATOMIC_COUNTER_BUFFERS = 0x92CF,
  GL_MAX_FRAGMENT_ATOMIC_COUNTER_BUFFERS = 0x92D0,
  GL_MAX_COMBINED_ATOMIC_COUNTER_BUFFERS = 0x92D1,
  GL_MAX_VERTEX_ATOMIC_COUNTERS =     0x92D2,
  GL_MAX_TESS_CONTROL_ATOMIC_COUNTERS = 0x92D3,
  GL_MAX_TESS_EVALUATION_ATOMIC_COUNTERS = 0x92D4,
  GL_MAX_GEOMETRY_ATOMIC_COUNTERS =   0x92D5,
  GL_MAX_FRAGMENT_ATOMIC_COUNTERS =   0x92D6,
  GL_MAX_COMBINED_ATOMIC_COUNTERS =   0x92D7,
  GL_MAX_ATOMIC_COUNTER_BUFFER_SIZE = 0x92D8,
  GL_MAX_ATOMIC_COUNTER_BUFFER_BINDINGS = 0x92DC,
  GL_ACTIVE_ATOMIC_COUNTER_BUFFERS =  0x92D9,
  GL_UNIFORM_ATOMIC_COUNTER_BUFFER_INDEX = 0x92DA,
  GL_UNSIGNED_INT_ATOMIC_COUNTER =    0x92DB,
  GL_VERTEX_ATTRIB_ARRAY_BARRIER_BIT = 0x00000001,
  GL_ELEMENT_ARRAY_BARRIER_BIT =      0x00000002,
  GL_UNIFORM_BARRIER_BIT =            0x00000004,
  GL_TEXTURE_FETCH_BARRIER_BIT =      0x00000008,
  GL_SHADER_IMAGE_ACCESS_BARRIER_BIT = 0x00000020,
  GL_COMMAND_BARRIER_BIT =            0x00000040,
  GL_PIXEL_BUFFER_BARRIER_BIT =       0x00000080,
  GL_TEXTURE_UPDATE_BARRIER_BIT =     0x00000100,
  GL_BUFFER_UPDATE_BARRIER_BIT =      0x00000200,
  GL_FRAMEBUFFER_BARRIER_BIT =        0x00000400,
  GL_TRANSFORM_FEEDBACK_BARRIER_BIT = 0x00000800,
  GL_ATOMIC_COUNTER_BARRIER_BIT =     0x00001000,
  GL_ALL_BARRIER_BITS =               0xFFFFFFFF,
  GL_MAX_IMAGE_UNITS =                0x8F38,
  GL_MAX_COMBINED_IMAGE_UNITS_AND_FRAGMENT_OUTPUTS = 0x8F39,
  GL_IMAGE_BINDING_NAME =             0x8F3A,
  GL_IMAGE_BINDING_LEVEL =            0x8F3B,
  GL_IMAGE_BINDING_LAYERED =          0x8F3C,
  GL_IMAGE_BINDING_LAYER =            0x8F3D,
  GL_IMAGE_BINDING_ACCESS =           0x8F3E,
  GL_IMAGE_1D =                       0x904C,
  GL_IMAGE_2D =                       0x904D,
  GL_IMAGE_3D =                       0x904E,
  GL_IMAGE_2D_RECT =                  0x904F,
  GL_IMAGE_CUBE =                     0x9050,
  GL_IMAGE_BUFFER =                   0x9051,
  GL_IMAGE_1D_ARRAY =                 0x9052,
  GL_IMAGE_2D_ARRAY =                 0x9053,
  GL_IMAGE_CUBE_MAP_ARRAY =           0x9054,
  GL_IMAGE_2D_MULTISAMPLE =           0x9055,
  GL_IMAGE_2D_MULTISAMPLE_ARRAY =     0x9056,
  GL_INT_IMAGE_1D =                   0x9057,
  GL_INT_IMAGE_2D =                   0x9058,
  GL_INT_IMAGE_3D =                   0x9059,
  GL_INT_IMAGE_2D_RECT =              0x905A,
  GL_INT_IMAGE_CUBE =                 0x905B,
  GL_INT_IMAGE_BUFFER =               0x905C,
  GL_INT_IMAGE_1D_ARRAY =             0x905D,
  GL_INT_IMAGE_2D_ARRAY =             0x905E,
  GL_INT_IMAGE_CUBE_MAP_ARRAY =       0x905F,
  GL_INT_IMAGE_2D_MULTISAMPLE =       0x9060,
  GL_INT_IMAGE_2D_MULTISAMPLE_ARRAY = 0x9061,
  GL_UNSIGNED_INT_IMAGE_1D =          0x9062,
  GL_UNSIGNED_INT_IMAGE_2D =          0x9063,
  GL_UNSIGNED_INT_IMAGE_3D =          0x9064,
  GL_UNSIGNED_INT_IMAGE_2D_RECT =     0x9065,
  GL_UNSIGNED_INT_IMAGE_CUBE =        0x9066,
  GL_UNSIGNED_INT_IMAGE_BUFFER =      0x9067,
  GL_UNSIGNED_INT_IMAGE_1D_ARRAY =    0x9068,
  GL_UNSIGNED_INT_IMAGE_2D_ARRAY =    0x9069,
  GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY = 0x906A,
  GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE = 0x906B,
  GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE_ARRAY = 0x906C,
  GL_MAX_IMAGE_SAMPLES =              0x906D,
  GL_IMAGE_BINDING_FORMAT =           0x906E,
  GL_IMAGE_FORMAT_COMPATIBILITY_TYPE = 0x90C7,
  GL_IMAGE_FORMAT_COMPATIBILITY_BY_SIZE = 0x90C8,
  GL_IMAGE_FORMAT_COMPATIBILITY_BY_CLASS = 0x90C9,
  GL_MAX_VERTEX_IMAGE_UNIFORMS =      0x90CA,
  GL_MAX_TESS_CONTROL_IMAGE_UNIFORMS = 0x90CB,
  GL_MAX_TESS_EVALUATION_IMAGE_UNIFORMS = 0x90CC,
  GL_MAX_GEOMETRY_IMAGE_UNIFORMS =    0x90CD,
  GL_MAX_FRAGMENT_IMAGE_UNIFORMS =    0x90CE,
  GL_MAX_COMBINED_IMAGE_UNIFORMS =    0x90CF,
  GL_TEXTURE_IMMUTABLE_FORMAT =       0x912F,
}

local libgl = ffi.load('libGL.so.1')

ffi.cdef[[

typedef unsigned int GLenum;
typedef unsigned char GLboolean;
typedef unsigned int GLbitfield;
typedef signed char GLbyte;
typedef short GLshort;
typedef int GLint;
typedef int GLsizei;
typedef unsigned char GLubyte;
typedef unsigned short GLushort;
typedef unsigned int GLuint;
typedef unsigned short GLhalf;
typedef float GLfloat;
typedef float GLclampf;
typedef double GLdouble;
typedef double GLclampd;
typedef void GLvoid;
typedef char GLchar;
typedef ptrdiff_t GLintptr;
typedef ptrdiff_t GLsizeiptr;
typedef ptrdiff_t GLintptrARB;
typedef ptrdiff_t GLsizeiptrARB;
typedef char GLcharARB;
typedef unsigned int GLhandleARB;
typedef unsigned short GLhalfARB;
typedef unsigned short GLhalfNV;
typedef long int int64_t;
typedef unsigned long int uint64_t;
typedef long long int int64_t;
typedef unsigned long long int uint64_t;
typedef long int int32_t;
typedef long long int int64_t;
typedef unsigned long long int uint64_t;
typedef __int32 int32_t;
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
typedef int64_t GLint64EXT;
typedef uint64_t GLuint64EXT;
typedef int64_t GLint64;
typedef uint64_t GLuint64;
typedef struct __GLsync *GLsync;

typedef void (*GLDEBUGPROCARB)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,GLvoid *userParam);
typedef void (*GLDEBUGPROCAMD)(GLuint id,GLenum category,GLenum severity,GLsizei length,const GLchar *message,GLvoid *userParam);
typedef GLintptr GLvdpauSurfaceNV;
typedef void (*PFNGLCULLFACEPROC) (GLenum mode);
typedef void (*PFNGLFRONTFACEPROC) (GLenum mode);
typedef void (*PFNGLHINTPROC) (GLenum target, GLenum mode);
typedef void (*PFNGLLINEWIDTHPROC) (GLfloat width);
typedef void (*PFNGLPOINTSIZEPROC) (GLfloat size);
typedef void (*PFNGLPOLYGONMODEPROC) (GLenum face, GLenum mode);
typedef void (*PFNGLSCISSORPROC) (GLint x, GLint y, GLsizei width, GLsizei height);
typedef void (*PFNGLTEXPARAMETERFPROC) (GLenum target, GLenum pname, GLfloat param);
typedef void (*PFNGLTEXPARAMETERFVPROC) (GLenum target, GLenum pname, const GLfloat *params);
typedef void (*PFNGLTEXPARAMETERIPROC) (GLenum target, GLenum pname, GLint param);
typedef void (*PFNGLTEXPARAMETERIVPROC) (GLenum target, GLenum pname, const GLint *params);
typedef void (*PFNGLTEXIMAGE1DPROC) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
typedef void (*PFNGLTEXIMAGE2DPROC) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
typedef void (*PFNGLDRAWBUFFERPROC) (GLenum mode);
typedef void (*PFNGLCLEARPROC) (GLbitfield mask);
typedef void (*PFNGLCLEARCOLORPROC) (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
typedef void (*PFNGLCLEARSTENCILPROC) (GLint s);
typedef void (*PFNGLCLEARDEPTHPROC) (GLclampd depth);
typedef void (*PFNGLSTENCILMASKPROC) (GLuint mask);
typedef void (*PFNGLCOLORMASKPROC) (GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
typedef void (*PFNGLDEPTHMASKPROC) (GLboolean flag);
typedef void (*PFNGLDISABLEPROC) (GLenum cap);
typedef void (*PFNGLENABLEPROC) (GLenum cap);
typedef void (*PFNGLFINISHPROC) (void);
typedef void (*PFNGLFLUSHPROC) (void);
typedef void (*PFNGLBLENDFUNCPROC) (GLenum sfactor, GLenum dfactor);
typedef void (*PFNGLLOGICOPPROC) (GLenum opcode);
typedef void (*PFNGLSTENCILFUNCPROC) (GLenum func, GLint ref, GLuint mask);
typedef void (*PFNGLSTENCILOPPROC) (GLenum fail, GLenum zfail, GLenum zpass);
typedef void (*PFNGLDEPTHFUNCPROC) (GLenum func);
typedef void (*PFNGLPIXELSTOREFPROC) (GLenum pname, GLfloat param);
typedef void (*PFNGLPIXELSTOREIPROC) (GLenum pname, GLint param);
typedef void (*PFNGLREADBUFFERPROC) (GLenum mode);
typedef void (*PFNGLREADPIXELSPROC) (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid *pixels);
typedef void (*PFNGLGETBOOLEANVPROC) (GLenum pname, GLboolean *params);
typedef void (*PFNGLGETDOUBLEVPROC) (GLenum pname, GLdouble *params);
typedef GLenum (*PFNGLGETERRORPROC) (void);
typedef void (*PFNGLGETFLOATVPROC) (GLenum pname, GLfloat *params);
typedef void (*PFNGLGETINTEGERVPROC) (GLenum pname, GLint *params);
typedef const GLubyte * (*PFNGLGETSTRINGPROC) (GLenum name);
typedef void (*PFNGLGETTEXIMAGEPROC) (GLenum target, GLint level, GLenum format, GLenum type, GLvoid *pixels);
typedef void (*PFNGLGETTEXPARAMETERFVPROC) (GLenum target, GLenum pname, GLfloat *params);
typedef void (*PFNGLGETTEXPARAMETERIVPROC) (GLenum target, GLenum pname, GLint *params);
typedef void (*PFNGLGETTEXLEVELPARAMETERFVPROC) (GLenum target, GLint level, GLenum pname, GLfloat *params);
typedef void (*PFNGLGETTEXLEVELPARAMETERIVPROC) (GLenum target, GLint level, GLenum pname, GLint *params);
typedef GLboolean (*PFNGLISENABLEDPROC) (GLenum cap);
typedef void (*PFNGLDEPTHRANGEPROC) (GLclampd near, GLclampd far);
typedef void (*PFNGLVIEWPORTPROC) (GLint x, GLint y, GLsizei width, GLsizei height);
typedef void (*PFNGLDRAWARRAYSPROC) (GLenum mode, GLint first, GLsizei count);
typedef void (*PFNGLDRAWELEMENTSPROC) (GLenum mode, GLsizei count, GLenum type, const GLvoid *indices);
typedef void (*PFNGLGETPOINTERVPROC) (GLenum pname, GLvoid* *params);
typedef void (*PFNGLPOLYGONOFFSETPROC) (GLfloat factor, GLfloat units);
typedef void (*PFNGLCOPYTEXIMAGE1DPROC) (GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLint border);
typedef void (*PFNGLCOPYTEXIMAGE2DPROC) (GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
typedef void (*PFNGLCOPYTEXSUBIMAGE1DPROC) (GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
typedef void (*PFNGLCOPYTEXSUBIMAGE2DPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
typedef void (*PFNGLTEXSUBIMAGE1DPROC) (GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const GLvoid *pixels);
typedef void (*PFNGLTEXSUBIMAGE2DPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
typedef void (*PFNGLBINDTEXTUREPROC) (GLenum target, GLuint texture);
typedef void (*PFNGLDELETETEXTURESPROC) (GLsizei n, const GLuint *textures);
typedef void (*PFNGLGENTEXTURESPROC) (GLsizei n, GLuint *textures);
typedef GLboolean (*PFNGLISTEXTUREPROC) (GLuint texture);
typedef void (*PFNGLBLENDCOLORPROC) (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
typedef void (*PFNGLBLENDEQUATIONPROC) (GLenum mode);
typedef void (*PFNGLDRAWRANGEELEMENTSPROC) (GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
typedef void (*PFNGLTEXIMAGE3DPROC) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
typedef void (*PFNGLTEXSUBIMAGE3DPROC) (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 (*PFNGLCOPYTEXSUBIMAGE3DPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
typedef void (*PFNGLACTIVETEXTUREPROC) (GLenum texture);
typedef void (*PFNGLSAMPLECOVERAGEPROC) (GLclampf value, GLboolean invert);
typedef void (*PFNGLCOMPRESSEDTEXIMAGE3DPROC) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const GLvoid *data);
typedef void (*PFNGLCOMPRESSEDTEXIMAGE2DPROC) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid *data);
typedef void (*PFNGLCOMPRESSEDTEXIMAGE1DPROC) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLint border, GLsizei imageSize, const GLvoid *data);
typedef void (*PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC) (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 (*PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const GLvoid *data);
typedef void (*PFNGLCOMPRESSEDTEXSUBIMAGE1DPROC) (GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLsizei imageSize, const GLvoid *data);
typedef void (*PFNGLGETCOMPRESSEDTEXIMAGEPROC) (GLenum target, GLint level, GLvoid *img);
typedef void (*PFNGLBLENDFUNCSEPARATEPROC) (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
typedef void (*PFNGLMULTIDRAWARRAYSPROC) (GLenum mode, const GLint *first, const GLsizei *count, GLsizei primcount);
typedef void (*PFNGLMULTIDRAWELEMENTSPROC) (GLenum mode, const GLsizei *count, GLenum type, const GLvoid* *indices, GLsizei primcount);
typedef void (*PFNGLPOINTPARAMETERFPROC) (GLenum pname, GLfloat param);
typedef void (*PFNGLPOINTPARAMETERFVPROC) (GLenum pname, const GLfloat *params);
typedef void (*PFNGLPOINTPARAMETERIPROC) (GLenum pname, GLint param);
typedef void (*PFNGLPOINTPARAMETERIVPROC) (GLenum pname, const GLint *params);
typedef void (*PFNGLGENQUERIESPROC) (GLsizei n, GLuint *ids);
typedef void (*PFNGLDELETEQUERIESPROC) (GLsizei n, const GLuint *ids);
typedef GLboolean (*PFNGLISQUERYPROC) (GLuint id);
typedef void (*PFNGLBEGINQUERYPROC) (GLenum target, GLuint id);
typedef void (*PFNGLENDQUERYPROC) (GLenum target);
typedef void (*PFNGLGETQUERYIVPROC) (GLenum target, GLenum pname, GLint *params);
typedef void (*PFNGLGETQUERYOBJECTIVPROC) (GLuint id, GLenum pname, GLint *params);
typedef void (*PFNGLGETQUERYOBJECTUIVPROC) (GLuint id, GLenum pname, GLuint *params);
typedef void (*PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer);
typedef void (*PFNGLDELETEBUFFERSPROC) (GLsizei n, const GLuint *buffers);
typedef void (*PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers);
typedef GLboolean (*PFNGLISBUFFERPROC) (GLuint buffer);
typedef void (*PFNGLBUFFERDATAPROC) (GLenum target, GLsizeiptr size, const GLvoid *data, GLenum usage);
typedef void (*PFNGLBUFFERSUBDATAPROC) (GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid *data);
typedef void (*PFNGLGETBUFFERSUBDATAPROC) (GLenum target, GLintptr offset, GLsizeiptr size, GLvoid *data);
typedef GLvoid* (*PFNGLMAPBUFFERPROC) (GLenum target, GLenum access);
typedef GLboolean (*PFNGLUNMAPBUFFERPROC) (GLenum target);
typedef void (*PFNGLGETBUFFERPARAMETERIVPROC) (GLenum target, GLenum pname, GLint *params);
typedef void (*PFNGLGETBUFFERPOINTERVPROC) (GLenum target, GLenum pname, GLvoid* *params);
typedef void (*PFNGLBLENDEQUATIONSEPARATEPROC) (GLenum modeRGB, GLenum modeAlpha);
typedef void (*PFNGLDRAWBUFFERSPROC) (GLsizei n, const GLenum *bufs);
typedef void (*PFNGLSTENCILOPSEPARATEPROC) (GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass);
typedef void (*PFNGLSTENCILFUNCSEPARATEPROC) (GLenum face, GLenum func, GLint ref, GLuint mask);
typedef void (*PFNGLSTENCILMASKSEPARATEPROC) (GLenum face, GLuint mask);
typedef void (*PFNGLATTACHSHADERPROC) (GLuint program, GLuint shader);
typedef void (*PFNGLBINDATTRIBLOCATIONPROC) (GLuint program, GLuint index, const GLchar *name);
typedef void (*PFNGLCOMPILESHADERPROC) (GLuint shader);
typedef GLuint (*PFNGLCREATEPROGRAMPROC) (void);
typedef GLuint (*PFNGLCREATESHADERPROC) (GLenum type);
typedef void (*PFNGLDELETEPROGRAMPROC) (GLuint program);
typedef void (*PFNGLDELETESHADERPROC) (GLuint shader);
typedef void (*PFNGLDETACHSHADERPROC) (GLuint program, GLuint shader);
typedef void (*PFNGLDISABLEVERTEXATTRIBARRAYPROC) (GLuint index);
typedef void (*PFNGLENABLEVERTEXATTRIBARRAYPROC) (GLuint index);
typedef void (*PFNGLGETACTIVEATTRIBPROC) (GLuint program, GLuint index, GLsizei bufSize, GLsizei *length, GLint *size, GLenum *type, GLchar *name);
typedef void (*PFNGLGETACTIVEUNIFORMPROC) (GLuint program, GLuint index, GLsizei bufSize, GLsizei *length, GLint *size, GLenum *type, GLchar *name);
typedef void (*PFNGLGETATTACHEDSHADERSPROC) (GLuint program, GLsizei maxCount, GLsizei *count, GLuint *obj);
typedef GLint (*PFNGLGETATTRIBLOCATIONPROC) (GLuint program, const GLchar *name);
typedef void (*PFNGLGETPROGRAMIVPROC) (GLuint program, GLenum pname, GLint *params);
typedef void (*PFNGLGETPROGRAMINFOLOGPROC) (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
typedef void (*PFNGLGETSHADERIVPROC) (GLuint shader, GLenum pname, GLint *params);
typedef void (*PFNGLGETSHADERINFOLOGPROC) (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
typedef void (*PFNGLGETSHADERSOURCEPROC) (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *source);
typedef GLint (*PFNGLGETUNIFORMLOCATIONPROC) (GLuint program, const GLchar *name);
typedef void (*PFNGLGETUNIFORMFVPROC) (GLuint program, GLint location, GLfloat *params);
typedef void (*PFNGLGETUNIFORMIVPROC) (GLuint program, GLint location, GLint *params);
typedef void (*PFNGLGETVERTEXATTRIBDVPROC) (GLuint index, GLenum pname, GLdouble *params);
typedef void (*PFNGLGETVERTEXATTRIBFVPROC) (GLuint index, GLenum pname, GLfloat *params);
typedef void (*PFNGLGETVERTEXATTRIBIVPROC) (GLuint index, GLenum pname, GLint *params);
typedef void (*PFNGLGETVERTEXATTRIBPOINTERVPROC) (GLuint index, GLenum pname, GLvoid* *pointer);
typedef GLboolean (*PFNGLISPROGRAMPROC) (GLuint program);
typedef GLboolean (*PFNGLISSHADERPROC) (GLuint shader);
typedef void (*PFNGLLINKPROGRAMPROC) (GLuint program);
typedef void (*PFNGLSHADERSOURCEPROC) (GLuint shader, GLsizei count, const GLchar* *string, const GLint *length);
typedef void (*PFNGLUSEPROGRAMPROC) (GLuint program);
typedef void (*PFNGLUNIFORM1FPROC) (GLint location, GLfloat v0);
typedef void (*PFNGLUNIFORM2FPROC) (GLint location, GLfloat v0, GLfloat v1);
typedef void (*PFNGLUNIFORM3FPROC) (GLint location, GLfloat v0, GLfloat v1, GLfloat v2);
typedef void (*PFNGLUNIFORM4FPROC) (GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
typedef void (*PFNGLUNIFORM1IPROC) (GLint location, GLint v0);
typedef void (*PFNGLUNIFORM2IPROC) (GLint location, GLint v0, GLint v1);
typedef void (*PFNGLUNIFORM3IPROC) (GLint location, GLint v0, GLint v1, GLint v2);
typedef void (*PFNGLUNIFORM4IPROC) (GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
typedef void (*PFNGLUNIFORM1FVPROC) (GLint location, GLsizei count, const GLfloat *value);
typedef void (*PFNGLUNIFORM2FVPROC) (GLint location, GLsizei count, const GLfloat *value);
typedef void (*PFNGLUNIFORM3FVPROC) (GLint location, GLsizei count, const GLfloat *value);
typedef void (*PFNGLUNIFORM4FVPROC) (GLint location, GLsizei count, const GLfloat *value);
typedef void (*PFNGLUNIFORM1IVPROC) (GLint location, GLsizei count, const GLint *value);
typedef void (*PFNGLUNIFORM2IVPROC) (GLint location, GLsizei count, const GLint *value);
typedef void (*PFNGLUNIFORM3IVPROC) (GLint location, GLsizei count, const GLint *value);
typedef void (*PFNGLUNIFORM4IVPROC) (GLint location, GLsizei count, const GLint *value);
typedef void (*PFNGLUNIFORMMATRIX2FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLUNIFORMMATRIX3FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLUNIFORMMATRIX4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLVALIDATEPROGRAMPROC) (GLuint program);
typedef void (*PFNGLVERTEXATTRIB1DPROC) (GLuint index, GLdouble x);
typedef void (*PFNGLVERTEXATTRIB1DVPROC) (GLuint index, const GLdouble *v);
typedef void (*PFNGLVERTEXATTRIB1FPROC) (GLuint index, GLfloat x);
typedef void (*PFNGLVERTEXATTRIB1FVPROC) (GLuint index, const GLfloat *v);
typedef void (*PFNGLVERTEXATTRIB1SPROC) (GLuint index, GLshort x);
typedef void (*PFNGLVERTEXATTRIB1SVPROC) (GLuint index, const GLshort *v);
typedef void (*PFNGLVERTEXATTRIB2DPROC) (GLuint index, GLdouble x, GLdouble y);
typedef void (*PFNGLVERTEXATTRIB2DVPROC) (GLuint index, const GLdouble *v);
typedef void (*PFNGLVERTEXATTRIB2FPROC) (GLuint index, GLfloat x, GLfloat y);
typedef void (*PFNGLVERTEXATTRIB2FVPROC) (GLuint index, const GLfloat *v);
typedef void (*PFNGLVERTEXATTRIB2SPROC) (GLuint index, GLshort x, GLshort y);
typedef void (*PFNGLVERTEXATTRIB2SVPROC) (GLuint index, const GLshort *v);
typedef void (*PFNGLVERTEXATTRIB3DPROC) (GLuint index, GLdouble x, GLdouble y, GLdouble z);
typedef void (*PFNGLVERTEXATTRIB3DVPROC) (GLuint index, const GLdouble *v);
typedef void (*PFNGLVERTEXATTRIB3FPROC) (GLuint index, GLfloat x, GLfloat y, GLfloat z);
typedef void (*PFNGLVERTEXATTRIB3FVPROC) (GLuint index, const GLfloat *v);
typedef void (*PFNGLVERTEXATTRIB3SPROC) (GLuint index, GLshort x, GLshort y, GLshort z);
typedef void (*PFNGLVERTEXATTRIB3SVPROC) (GLuint index, const GLshort *v);
typedef void (*PFNGLVERTEXATTRIB4NBVPROC) (GLuint index, const GLbyte *v);
typedef void (*PFNGLVERTEXATTRIB4NIVPROC) (GLuint index, const GLint *v);
typedef void (*PFNGLVERTEXATTRIB4NSVPROC) (GLuint index, const GLshort *v);
typedef void (*PFNGLVERTEXATTRIB4NUBPROC) (GLuint index, GLubyte x, GLubyte y, GLubyte z, GLubyte w);
typedef void (*PFNGLVERTEXATTRIB4NUBVPROC) (GLuint index, const GLubyte *v);
typedef void (*PFNGLVERTEXATTRIB4NUIVPROC) (GLuint index, const GLuint *v);
typedef void (*PFNGLVERTEXATTRIB4NUSVPROC) (GLuint index, const GLushort *v);
typedef void (*PFNGLVERTEXATTRIB4BVPROC) (GLuint index, const GLbyte *v);
typedef void (*PFNGLVERTEXATTRIB4DPROC) (GLuint index, GLdouble x, GLdouble y, GLdouble z, GLdouble w);
typedef void (*PFNGLVERTEXATTRIB4DVPROC) (GLuint index, const GLdouble *v);
typedef void (*PFNGLVERTEXATTRIB4FPROC) (GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
typedef void (*PFNGLVERTEXATTRIB4FVPROC) (GLuint index, const GLfloat *v);
typedef void (*PFNGLVERTEXATTRIB4IVPROC) (GLuint index, const GLint *v);
typedef void (*PFNGLVERTEXATTRIB4SPROC) (GLuint index, GLshort x, GLshort y, GLshort z, GLshort w);
typedef void (*PFNGLVERTEXATTRIB4SVPROC) (GLuint index, const GLshort *v);
typedef void (*PFNGLVERTEXATTRIB4UBVPROC) (GLuint index, const GLubyte *v);
typedef void (*PFNGLVERTEXATTRIB4UIVPROC) (GLuint index, const GLuint *v);
typedef void (*PFNGLVERTEXATTRIB4USVPROC) (GLuint index, const GLushort *v);
typedef void (*PFNGLVERTEXATTRIBPOINTERPROC) (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid *pointer);
typedef void (*PFNGLUNIFORMMATRIX2X3FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLUNIFORMMATRIX3X2FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLUNIFORMMATRIX2X4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLUNIFORMMATRIX4X2FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLUNIFORMMATRIX3X4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLUNIFORMMATRIX4X3FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLCOLORMASKIPROC) (GLuint index, GLboolean r, GLboolean g, GLboolean b, GLboolean a);
typedef void (*PFNGLGETBOOLEANI_VPROC) (GLenum target, GLuint index, GLboolean *data);
typedef void (*PFNGLGETINTEGERI_VPROC) (GLenum target, GLuint index, GLint *data);
typedef void (*PFNGLENABLEIPROC) (GLenum target, GLuint index);
typedef void (*PFNGLDISABLEIPROC) (GLenum target, GLuint index);
typedef GLboolean (*PFNGLISENABLEDIPROC) (GLenum target, GLuint index);
typedef void (*PFNGLBEGINTRANSFORMFEEDBACKPROC) (GLenum primitiveMode);
typedef void (*PFNGLENDTRANSFORMFEEDBACKPROC) (void);
typedef void (*PFNGLBINDBUFFERRANGEPROC) (GLenum target, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size);
typedef void (*PFNGLBINDBUFFERBASEPROC) (GLenum target, GLuint index, GLuint buffer);
typedef void (*PFNGLTRANSFORMFEEDBACKVARYINGSPROC) (GLuint program, GLsizei count, const GLchar* *varyings, GLenum bufferMode);
typedef void (*PFNGLGETTRANSFORMFEEDBACKVARYINGPROC) (GLuint program, GLuint index, GLsizei bufSize, GLsizei *length, GLsizei *size, GLenum *type, GLchar *name);
typedef void (*PFNGLCLAMPCOLORPROC) (GLenum target, GLenum clamp);
typedef void (*PFNGLBEGINCONDITIONALRENDERPROC) (GLuint id, GLenum mode);
typedef void (*PFNGLENDCONDITIONALRENDERPROC) (void);
typedef void (*PFNGLVERTEXATTRIBIPOINTERPROC) (GLuint index, GLint size, GLenum type, GLsizei stride, const GLvoid *pointer);
typedef void (*PFNGLGETVERTEXATTRIBIIVPROC) (GLuint index, GLenum pname, GLint *params);
typedef void (*PFNGLGETVERTEXATTRIBIUIVPROC) (GLuint index, GLenum pname, GLuint *params);
typedef void (*PFNGLVERTEXATTRIBI1IPROC) (GLuint index, GLint x);
typedef void (*PFNGLVERTEXATTRIBI2IPROC) (GLuint index, GLint x, GLint y);
typedef void (*PFNGLVERTEXATTRIBI3IPROC) (GLuint index, GLint x, GLint y, GLint z);
typedef void (*PFNGLVERTEXATTRIBI4IPROC) (GLuint index, GLint x, GLint y, GLint z, GLint w);
typedef void (*PFNGLVERTEXATTRIBI1UIPROC) (GLuint index, GLuint x);
typedef void (*PFNGLVERTEXATTRIBI2UIPROC) (GLuint index, GLuint x, GLuint y);
typedef void (*PFNGLVERTEXATTRIBI3UIPROC) (GLuint index, GLuint x, GLuint y, GLuint z);
typedef void (*PFNGLVERTEXATTRIBI4UIPROC) (GLuint index, GLuint x, GLuint y, GLuint z, GLuint w);
typedef void (*PFNGLVERTEXATTRIBI1IVPROC) (GLuint index, const GLint *v);
typedef void (*PFNGLVERTEXATTRIBI2IVPROC) (GLuint index, const GLint *v);
typedef void (*PFNGLVERTEXATTRIBI3IVPROC) (GLuint index, const GLint *v);
typedef void (*PFNGLVERTEXATTRIBI4IVPROC) (GLuint index, const GLint *v);
typedef void (*PFNGLVERTEXATTRIBI1UIVPROC) (GLuint index, const GLuint *v);
typedef void (*PFNGLVERTEXATTRIBI2UIVPROC) (GLuint index, const GLuint *v);
typedef void (*PFNGLVERTEXATTRIBI3UIVPROC) (GLuint index, const GLuint *v);
typedef void (*PFNGLVERTEXATTRIBI4UIVPROC) (GLuint index, const GLuint *v);
typedef void (*PFNGLVERTEXATTRIBI4BVPROC) (GLuint index, const GLbyte *v);
typedef void (*PFNGLVERTEXATTRIBI4SVPROC) (GLuint index, const GLshort *v);
typedef void (*PFNGLVERTEXATTRIBI4UBVPROC) (GLuint index, const GLubyte *v);
typedef void (*PFNGLVERTEXATTRIBI4USVPROC) (GLuint index, const GLushort *v);
typedef void (*PFNGLGETUNIFORMUIVPROC) (GLuint program, GLint location, GLuint *params);
typedef void (*PFNGLBINDFRAGDATALOCATIONPROC) (GLuint program, GLuint color, const GLchar *name);
typedef GLint (*PFNGLGETFRAGDATALOCATIONPROC) (GLuint program, const GLchar *name);
typedef void (*PFNGLUNIFORM1UIPROC) (GLint location, GLuint v0);
typedef void (*PFNGLUNIFORM2UIPROC) (GLint location, GLuint v0, GLuint v1);
typedef void (*PFNGLUNIFORM3UIPROC) (GLint location, GLuint v0, GLuint v1, GLuint v2);
typedef void (*PFNGLUNIFORM4UIPROC) (GLint location, GLuint v0, GLuint v1, GLuint v2, GLuint v3);
typedef void (*PFNGLUNIFORM1UIVPROC) (GLint location, GLsizei count, const GLuint *value);
typedef void (*PFNGLUNIFORM2UIVPROC) (GLint location, GLsizei count, const GLuint *value);
typedef void (*PFNGLUNIFORM3UIVPROC) (GLint location, GLsizei count, const GLuint *value);
typedef void (*PFNGLUNIFORM4UIVPROC) (GLint location, GLsizei count, const GLuint *value);
typedef void (*PFNGLTEXPARAMETERIIVPROC) (GLenum target, GLenum pname, const GLint *params);
typedef void (*PFNGLTEXPARAMETERIUIVPROC) (GLenum target, GLenum pname, const GLuint *params);
typedef void (*PFNGLGETTEXPARAMETERIIVPROC) (GLenum target, GLenum pname, GLint *params);
typedef void (*PFNGLGETTEXPARAMETERIUIVPROC) (GLenum target, GLenum pname, GLuint *params);
typedef void (*PFNGLCLEARBUFFERIVPROC) (GLenum buffer, GLint drawbuffer, const GLint *value);
typedef void (*PFNGLCLEARBUFFERUIVPROC) (GLenum buffer, GLint drawbuffer, const GLuint *value);
typedef void (*PFNGLCLEARBUFFERFVPROC) (GLenum buffer, GLint drawbuffer, const GLfloat *value);
typedef void (*PFNGLCLEARBUFFERFIPROC) (GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
typedef const GLubyte * (*PFNGLGETSTRINGIPROC) (GLenum name, GLuint index);
typedef void (*PFNGLDRAWARRAYSINSTANCEDPROC) (GLenum mode, GLint first, GLsizei count, GLsizei primcount);
typedef void (*PFNGLDRAWELEMENTSINSTANCEDPROC) (GLenum mode, GLsizei count, GLenum type, const GLvoid *indices, GLsizei primcount);
typedef void (*PFNGLTEXBUFFERPROC) (GLenum target, GLenum internalformat, GLuint buffer);
typedef void (*PFNGLPRIMITIVERESTARTINDEXPROC) (GLuint index);
typedef void (*PFNGLGETINTEGER64I_VPROC) (GLenum target, GLuint index, GLint64 *data);
typedef void (*PFNGLGETBUFFERPARAMETERI64VPROC) (GLenum target, GLenum pname, GLint64 *params);
typedef void (*PFNGLFRAMEBUFFERTEXTUREPROC) (GLenum target, GLenum attachment, GLuint texture, GLint level);
typedef void (*PFNGLVERTEXATTRIBDIVISORPROC) (GLuint index, GLuint divisor);
typedef void (*PFNGLMINSAMPLESHADINGPROC) (GLclampf value);
typedef void (*PFNGLBLENDEQUATIONIPROC) (GLuint buf, GLenum mode);
typedef void (*PFNGLBLENDEQUATIONSEPARATEIPROC) (GLuint buf, GLenum modeRGB, GLenum modeAlpha);
typedef void (*PFNGLBLENDFUNCIPROC) (GLuint buf, GLenum src, GLenum dst);
typedef void (*PFNGLBLENDFUNCSEPARATEIPROC) (GLuint buf, GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
typedef GLboolean (*PFNGLISRENDERBUFFERPROC) (GLuint renderbuffer);
typedef void (*PFNGLBINDRENDERBUFFERPROC) (GLenum target, GLuint renderbuffer);
typedef void (*PFNGLDELETERENDERBUFFERSPROC) (GLsizei n, const GLuint *renderbuffers);
typedef void (*PFNGLGENRENDERBUFFERSPROC) (GLsizei n, GLuint *renderbuffers);
typedef void (*PFNGLRENDERBUFFERSTORAGEPROC) (GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
typedef void (*PFNGLGETRENDERBUFFERPARAMETERIVPROC) (GLenum target, GLenum pname, GLint *params);
typedef GLboolean (*PFNGLISFRAMEBUFFERPROC) (GLuint framebuffer);
typedef void (*PFNGLBINDFRAMEBUFFERPROC) (GLenum target, GLuint framebuffer);
typedef void (*PFNGLDELETEFRAMEBUFFERSPROC) (GLsizei n, const GLuint *framebuffers);
typedef void (*PFNGLGENFRAMEBUFFERSPROC) (GLsizei n, GLuint *framebuffers);
typedef GLenum (*PFNGLCHECKFRAMEBUFFERSTATUSPROC) (GLenum target);
typedef void (*PFNGLFRAMEBUFFERTEXTURE1DPROC) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
typedef void (*PFNGLFRAMEBUFFERTEXTURE2DPROC) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
typedef void (*PFNGLFRAMEBUFFERTEXTURE3DPROC) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset);
typedef void (*PFNGLFRAMEBUFFERRENDERBUFFERPROC) (GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
typedef void (*PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC) (GLenum target, GLenum attachment, GLenum pname, GLint *params);
typedef void (*PFNGLGENERATEMIPMAPPROC) (GLenum target);
typedef void (*PFNGLBLITFRAMEBUFFERPROC) (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
typedef void (*PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC) (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
typedef void (*PFNGLFRAMEBUFFERTEXTURELAYERPROC) (GLenum target, GLenum attachment, GLuint texture, GLint level, GLint layer);
typedef GLvoid* (*PFNGLMAPBUFFERRANGEPROC) (GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access);
typedef void (*PFNGLFLUSHMAPPEDBUFFERRANGEPROC) (GLenum target, GLintptr offset, GLsizeiptr length);
typedef void (*PFNGLBINDVERTEXARRAYPROC) (GLuint array);
typedef void (*PFNGLDELETEVERTEXARRAYSPROC) (GLsizei n, const GLuint *arrays);
typedef void (*PFNGLGENVERTEXARRAYSPROC) (GLsizei n, GLuint *arrays);
typedef GLboolean (*PFNGLISVERTEXARRAYPROC) (GLuint array);
typedef void (*PFNGLGETUNIFORMINDICESPROC) (GLuint program, GLsizei uniformCount, const GLchar* *uniformNames, GLuint *uniformIndices);
typedef void (*PFNGLGETACTIVEUNIFORMSIVPROC) (GLuint program, GLsizei uniformCount, const GLuint *uniformIndices, GLenum pname, GLint *params);
typedef void (*PFNGLGETACTIVEUNIFORMNAMEPROC) (GLuint program, GLuint uniformIndex, GLsizei bufSize, GLsizei *length, GLchar *uniformName);
typedef GLuint (*PFNGLGETUNIFORMBLOCKINDEXPROC) (GLuint program, const GLchar *uniformBlockName);
typedef void (*PFNGLGETACTIVEUNIFORMBLOCKIVPROC) (GLuint program, GLuint uniformBlockIndex, GLenum pname, GLint *params);
typedef void (*PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC) (GLuint program, GLuint uniformBlockIndex, GLsizei bufSize, GLsizei *length, GLchar *uniformBlockName);
typedef void (*PFNGLUNIFORMBLOCKBINDINGPROC) (GLuint program, GLuint uniformBlockIndex, GLuint uniformBlockBinding);
typedef void (*PFNGLCOPYBUFFERSUBDATAPROC) (GLenum readTarget, GLenum writeTarget, GLintptr readOffset, GLintptr writeOffset, GLsizeiptr size);
typedef void (*PFNGLDRAWELEMENTSBASEVERTEXPROC) (GLenum mode, GLsizei count, GLenum type, const GLvoid *indices, GLint basevertex);
typedef void (*PFNGLDRAWRANGEELEMENTSBASEVERTEXPROC) (GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices, GLint basevertex);
typedef void (*PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC) (GLenum mode, GLsizei count, GLenum type, const GLvoid *indices, GLsizei primcount, GLint basevertex);
typedef void (*PFNGLMULTIDRAWELEMENTSBASEVERTEXPROC) (GLenum mode, const GLsizei *count, GLenum type, const GLvoid* *indices, GLsizei primcount, const GLint *basevertex);
typedef void (*PFNGLPROVOKINGVERTEXPROC) (GLenum mode);
typedef GLsync (*PFNGLFENCESYNCPROC) (GLenum condition, GLbitfield flags);
typedef GLboolean (*PFNGLISSYNCPROC) (GLsync sync);
typedef void (*PFNGLDELETESYNCPROC) (GLsync sync);
typedef GLenum (*PFNGLCLIENTWAITSYNCPROC) (GLsync sync, GLbitfield flags, GLuint64 timeout);
typedef void (*PFNGLWAITSYNCPROC) (GLsync sync, GLbitfield flags, GLuint64 timeout);
typedef void (*PFNGLGETINTEGER64VPROC) (GLenum pname, GLint64 *params);
typedef void (*PFNGLGETSYNCIVPROC) (GLsync sync, GLenum pname, GLsizei bufSize, GLsizei *length, GLint *values);
typedef void (*PFNGLTEXIMAGE2DMULTISAMPLEPROC) (GLenum target, GLsizei samples, GLint internalformat, GLsizei width, GLsizei height, GLboolean fixedsamplelocations);
typedef void (*PFNGLTEXIMAGE3DMULTISAMPLEPROC) (GLenum target, GLsizei samples, GLint internalformat, GLsizei width, GLsizei height, GLsizei depth, GLboolean fixedsamplelocations);
typedef void (*PFNGLGETMULTISAMPLEFVPROC) (GLenum pname, GLuint index, GLfloat *val);
typedef void (*PFNGLSAMPLEMASKIPROC) (GLuint index, GLbitfield mask);
typedef void (*PFNGLBLENDEQUATIONIARBPROC) (GLuint buf, GLenum mode);
typedef void (*PFNGLBLENDEQUATIONSEPARATEIARBPROC) (GLuint buf, GLenum modeRGB, GLenum modeAlpha);
typedef void (*PFNGLBLENDFUNCIARBPROC) (GLuint buf, GLenum src, GLenum dst);
typedef void (*PFNGLBLENDFUNCSEPARATEIARBPROC) (GLuint buf, GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
typedef void (*PFNGLMINSAMPLESHADINGARBPROC) (GLclampf value);
typedef void (*PFNGLNAMEDSTRINGARBPROC) (GLenum type, GLint namelen, const GLchar *name, GLint stringlen, const GLchar *string);
typedef void (*PFNGLDELETENAMEDSTRINGARBPROC) (GLint namelen, const GLchar *name);
typedef void (*PFNGLCOMPILESHADERINCLUDEARBPROC) (GLuint shader, GLsizei count, const GLchar* *path, const GLint *length);
typedef GLboolean (*PFNGLISNAMEDSTRINGARBPROC) (GLint namelen, const GLchar *name);
typedef void (*PFNGLGETNAMEDSTRINGARBPROC) (GLint namelen, const GLchar *name, GLsizei bufSize, GLint *stringlen, GLchar *string);
typedef void (*PFNGLGETNAMEDSTRINGIVARBPROC) (GLint namelen, const GLchar *name, GLenum pname, GLint *params);
typedef void (*PFNGLBINDFRAGDATALOCATIONINDEXEDPROC) (GLuint program, GLuint colorNumber, GLuint index, const GLchar *name);
typedef GLint (*PFNGLGETFRAGDATAINDEXPROC) (GLuint program, const GLchar *name);
typedef void (*PFNGLGENSAMPLERSPROC) (GLsizei count, GLuint *samplers);
typedef void (*PFNGLDELETESAMPLERSPROC) (GLsizei count, const GLuint *samplers);
typedef GLboolean (*PFNGLISSAMPLERPROC) (GLuint sampler);
typedef void (*PFNGLBINDSAMPLERPROC) (GLuint unit, GLuint sampler);
typedef void (*PFNGLSAMPLERPARAMETERIPROC) (GLuint sampler, GLenum pname, GLint param);
typedef void (*PFNGLSAMPLERPARAMETERIVPROC) (GLuint sampler, GLenum pname, const GLint *param);
typedef void (*PFNGLSAMPLERPARAMETERFPROC) (GLuint sampler, GLenum pname, GLfloat param);
typedef void (*PFNGLSAMPLERPARAMETERFVPROC) (GLuint sampler, GLenum pname, const GLfloat *param);
typedef void (*PFNGLSAMPLERPARAMETERIIVPROC) (GLuint sampler, GLenum pname, const GLint *param);
typedef void (*PFNGLSAMPLERPARAMETERIUIVPROC) (GLuint sampler, GLenum pname, const GLuint *param);
typedef void (*PFNGLGETSAMPLERPARAMETERIVPROC) (GLuint sampler, GLenum pname, GLint *params);
typedef void (*PFNGLGETSAMPLERPARAMETERIIVPROC) (GLuint sampler, GLenum pname, GLint *params);
typedef void (*PFNGLGETSAMPLERPARAMETERFVPROC) (GLuint sampler, GLenum pname, GLfloat *params);
typedef void (*PFNGLGETSAMPLERPARAMETERIUIVPROC) (GLuint sampler, GLenum pname, GLuint *params);
typedef void (*PFNGLQUERYCOUNTERPROC) (GLuint id, GLenum target);
typedef void (*PFNGLGETQUERYOBJECTI64VPROC) (GLuint id, GLenum pname, GLint64 *params);
typedef void (*PFNGLGETQUERYOBJECTUI64VPROC) (GLuint id, GLenum pname, GLuint64 *params);
typedef void (*PFNGLVERTEXP2UIPROC) (GLenum type, GLuint value);
typedef void (*PFNGLVERTEXP2UIVPROC) (GLenum type, const GLuint *value);
typedef void (*PFNGLVERTEXP3UIPROC) (GLenum type, GLuint value);
typedef void (*PFNGLVERTEXP3UIVPROC) (GLenum type, const GLuint *value);
typedef void (*PFNGLVERTEXP4UIPROC) (GLenum type, GLuint value);
typedef void (*PFNGLVERTEXP4UIVPROC) (GLenum type, const GLuint *value);
typedef void (*PFNGLTEXCOORDP1UIPROC) (GLenum type, GLuint coords);
typedef void (*PFNGLTEXCOORDP1UIVPROC) (GLenum type, const GLuint *coords);
typedef void (*PFNGLTEXCOORDP2UIPROC) (GLenum type, GLuint coords);
typedef void (*PFNGLTEXCOORDP2UIVPROC) (GLenum type, const GLuint *coords);
typedef void (*PFNGLTEXCOORDP3UIPROC) (GLenum type, GLuint coords);
typedef void (*PFNGLTEXCOORDP3UIVPROC) (GLenum type, const GLuint *coords);
typedef void (*PFNGLTEXCOORDP4UIPROC) (GLenum type, GLuint coords);
typedef void (*PFNGLTEXCOORDP4UIVPROC) (GLenum type, const GLuint *coords);
typedef void (*PFNGLMULTITEXCOORDP1UIPROC) (GLenum texture, GLenum type, GLuint coords);
typedef void (*PFNGLMULTITEXCOORDP1UIVPROC) (GLenum texture, GLenum type, const GLuint *coords);
typedef void (*PFNGLMULTITEXCOORDP2UIPROC) (GLenum texture, GLenum type, GLuint coords);
typedef void (*PFNGLMULTITEXCOORDP2UIVPROC) (GLenum texture, GLenum type, const GLuint *coords);
typedef void (*PFNGLMULTITEXCOORDP3UIPROC) (GLenum texture, GLenum type, GLuint coords);
typedef void (*PFNGLMULTITEXCOORDP3UIVPROC) (GLenum texture, GLenum type, const GLuint *coords);
typedef void (*PFNGLMULTITEXCOORDP4UIPROC) (GLenum texture, GLenum type, GLuint coords);
typedef void (*PFNGLMULTITEXCOORDP4UIVPROC) (GLenum texture, GLenum type, const GLuint *coords);
typedef void (*PFNGLNORMALP3UIPROC) (GLenum type, GLuint coords);
typedef void (*PFNGLNORMALP3UIVPROC) (GLenum type, const GLuint *coords);
typedef void (*PFNGLCOLORP3UIPROC) (GLenum type, GLuint color);
typedef void (*PFNGLCOLORP3UIVPROC) (GLenum type, const GLuint *color);
typedef void (*PFNGLCOLORP4UIPROC) (GLenum type, GLuint color);
typedef void (*PFNGLCOLORP4UIVPROC) (GLenum type, const GLuint *color);
typedef void (*PFNGLSECONDARYCOLORP3UIPROC) (GLenum type, GLuint color);
typedef void (*PFNGLSECONDARYCOLORP3UIVPROC) (GLenum type, const GLuint *color);
typedef void (*PFNGLVERTEXATTRIBP1UIPROC) (GLuint index, GLenum type, GLboolean normalized, GLuint value);
typedef void (*PFNGLVERTEXATTRIBP1UIVPROC) (GLuint index, GLenum type, GLboolean normalized, const GLuint *value);
typedef void (*PFNGLVERTEXATTRIBP2UIPROC) (GLuint index, GLenum type, GLboolean normalized, GLuint value);
typedef void (*PFNGLVERTEXATTRIBP2UIVPROC) (GLuint index, GLenum type, GLboolean normalized, const GLuint *value);
typedef void (*PFNGLVERTEXATTRIBP3UIPROC) (GLuint index, GLenum type, GLboolean normalized, GLuint value);
typedef void (*PFNGLVERTEXATTRIBP3UIVPROC) (GLuint index, GLenum type, GLboolean normalized, const GLuint *value);
typedef void (*PFNGLVERTEXATTRIBP4UIPROC) (GLuint index, GLenum type, GLboolean normalized, GLuint value);
typedef void (*PFNGLVERTEXATTRIBP4UIVPROC) (GLuint index, GLenum type, GLboolean normalized, const GLuint *value);
typedef void (*PFNGLDRAWARRAYSINDIRECTPROC) (GLenum mode, const GLvoid *indirect);
typedef void (*PFNGLDRAWELEMENTSINDIRECTPROC) (GLenum mode, GLenum type, const GLvoid *indirect);
typedef void (*PFNGLUNIFORM1DPROC) (GLint location, GLdouble x);
typedef void (*PFNGLUNIFORM2DPROC) (GLint location, GLdouble x, GLdouble y);
typedef void (*PFNGLUNIFORM3DPROC) (GLint location, GLdouble x, GLdouble y, GLdouble z);
typedef void (*PFNGLUNIFORM4DPROC) (GLint location, GLdouble x, GLdouble y, GLdouble z, GLdouble w);
typedef void (*PFNGLUNIFORM1DVPROC) (GLint location, GLsizei count, const GLdouble *value);
typedef void (*PFNGLUNIFORM2DVPROC) (GLint location, GLsizei count, const GLdouble *value);
typedef void (*PFNGLUNIFORM3DVPROC) (GLint location, GLsizei count, const GLdouble *value);
typedef void (*PFNGLUNIFORM4DVPROC) (GLint location, GLsizei count, const GLdouble *value);
typedef void (*PFNGLUNIFORMMATRIX2DVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLUNIFORMMATRIX3DVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLUNIFORMMATRIX4DVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLUNIFORMMATRIX2X3DVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLUNIFORMMATRIX2X4DVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLUNIFORMMATRIX3X2DVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLUNIFORMMATRIX3X4DVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLUNIFORMMATRIX4X2DVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLUNIFORMMATRIX4X3DVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLGETUNIFORMDVPROC) (GLuint program, GLint location, GLdouble *params);
typedef GLint (*PFNGLGETSUBROUTINEUNIFORMLOCATIONPROC) (GLuint program, GLenum shadertype, const GLchar *name);
typedef GLuint (*PFNGLGETSUBROUTINEINDEXPROC) (GLuint program, GLenum shadertype, const GLchar *name);
typedef void (*PFNGLGETACTIVESUBROUTINEUNIFORMIVPROC) (GLuint program, GLenum shadertype, GLuint index, GLenum pname, GLint *values);
typedef void (*PFNGLGETACTIVESUBROUTINEUNIFORMNAMEPROC) (GLuint program, GLenum shadertype, GLuint index, GLsizei bufsize, GLsizei *length, GLchar *name);
typedef void (*PFNGLGETACTIVESUBROUTINENAMEPROC) (GLuint program, GLenum shadertype, GLuint index, GLsizei bufsize, GLsizei *length, GLchar *name);
typedef void (*PFNGLUNIFORMSUBROUTINESUIVPROC) (GLenum shadertype, GLsizei count, const GLuint *indices);
typedef void (*PFNGLGETUNIFORMSUBROUTINEUIVPROC) (GLenum shadertype, GLint location, GLuint *params);
typedef void (*PFNGLGETPROGRAMSTAGEIVPROC) (GLuint program, GLenum shadertype, GLenum pname, GLint *values);
typedef void (*PFNGLPATCHPARAMETERIPROC) (GLenum pname, GLint value);
typedef void (*PFNGLPATCHPARAMETERFVPROC) (GLenum pname, const GLfloat *values);
typedef void (*PFNGLBINDTRANSFORMFEEDBACKPROC) (GLenum target, GLuint id);
typedef void (*PFNGLDELETETRANSFORMFEEDBACKSPROC) (GLsizei n, const GLuint *ids);
typedef void (*PFNGLGENTRANSFORMFEEDBACKSPROC) (GLsizei n, GLuint *ids);
typedef GLboolean (*PFNGLISTRANSFORMFEEDBACKPROC) (GLuint id);
typedef void (*PFNGLPAUSETRANSFORMFEEDBACKPROC) (void);
typedef void (*PFNGLRESUMETRANSFORMFEEDBACKPROC) (void);
typedef void (*PFNGLDRAWTRANSFORMFEEDBACKPROC) (GLenum mode, GLuint id);
typedef void (*PFNGLDRAWTRANSFORMFEEDBACKSTREAMPROC) (GLenum mode, GLuint id, GLuint stream);
typedef void (*PFNGLBEGINQUERYINDEXEDPROC) (GLenum target, GLuint index, GLuint id);
typedef void (*PFNGLENDQUERYINDEXEDPROC) (GLenum target, GLuint index);
typedef void (*PFNGLGETQUERYINDEXEDIVPROC) (GLenum target, GLuint index, GLenum pname, GLint *params);
typedef void (*PFNGLRELEASESHADERCOMPILERPROC) (void);
typedef void (*PFNGLSHADERBINARYPROC) (GLsizei count, const GLuint *shaders, GLenum binaryformat, const GLvoid *binary, GLsizei length);
typedef void (*PFNGLGETSHADERPRECISIONFORMATPROC) (GLenum shadertype, GLenum precisiontype, GLint *range, GLint *precision);
typedef void (*PFNGLDEPTHRANGEFPROC) (GLclampf n, GLclampf f);
typedef void (*PFNGLCLEARDEPTHFPROC) (GLclampf d);
typedef void (*PFNGLGETPROGRAMBINARYPROC) (GLuint program, GLsizei bufSize, GLsizei *length, GLenum *binaryFormat, GLvoid *binary);
typedef void (*PFNGLPROGRAMBINARYPROC) (GLuint program, GLenum binaryFormat, const GLvoid *binary, GLsizei length);
typedef void (*PFNGLPROGRAMPARAMETERIPROC) (GLuint program, GLenum pname, GLint value);
typedef void (*PFNGLUSEPROGRAMSTAGESPROC) (GLuint pipeline, GLbitfield stages, GLuint program);
typedef void (*PFNGLACTIVESHADERPROGRAMPROC) (GLuint pipeline, GLuint program);
typedef GLuint (*PFNGLCREATESHADERPROGRAMVPROC) (GLenum type, GLsizei count, const GLchar* *strings);
typedef void (*PFNGLBINDPROGRAMPIPELINEPROC) (GLuint pipeline);
typedef void (*PFNGLDELETEPROGRAMPIPELINESPROC) (GLsizei n, const GLuint *pipelines);
typedef void (*PFNGLGENPROGRAMPIPELINESPROC) (GLsizei n, GLuint *pipelines);
typedef GLboolean (*PFNGLISPROGRAMPIPELINEPROC) (GLuint pipeline);
typedef void (*PFNGLGETPROGRAMPIPELINEIVPROC) (GLuint pipeline, GLenum pname, GLint *params);
typedef void (*PFNGLPROGRAMUNIFORM1IPROC) (GLuint program, GLint location, GLint v0);
typedef void (*PFNGLPROGRAMUNIFORM1IVPROC) (GLuint program, GLint location, GLsizei count, const GLint *value);
typedef void (*PFNGLPROGRAMUNIFORM1FPROC) (GLuint program, GLint location, GLfloat v0);
typedef void (*PFNGLPROGRAMUNIFORM1FVPROC) (GLuint program, GLint location, GLsizei count, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORM1DPROC) (GLuint program, GLint location, GLdouble v0);
typedef void (*PFNGLPROGRAMUNIFORM1DVPROC) (GLuint program, GLint location, GLsizei count, const GLdouble *value);
typedef void (*PFNGLPROGRAMUNIFORM1UIPROC) (GLuint program, GLint location, GLuint v0);
typedef void (*PFNGLPROGRAMUNIFORM1UIVPROC) (GLuint program, GLint location, GLsizei count, const GLuint *value);
typedef void (*PFNGLPROGRAMUNIFORM2IPROC) (GLuint program, GLint location, GLint v0, GLint v1);
typedef void (*PFNGLPROGRAMUNIFORM2IVPROC) (GLuint program, GLint location, GLsizei count, const GLint *value);
typedef void (*PFNGLPROGRAMUNIFORM2FPROC) (GLuint program, GLint location, GLfloat v0, GLfloat v1);
typedef void (*PFNGLPROGRAMUNIFORM2FVPROC) (GLuint program, GLint location, GLsizei count, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORM2DPROC) (GLuint program, GLint location, GLdouble v0, GLdouble v1);
typedef void (*PFNGLPROGRAMUNIFORM2DVPROC) (GLuint program, GLint location, GLsizei count, const GLdouble *value);
typedef void (*PFNGLPROGRAMUNIFORM2UIPROC) (GLuint program, GLint location, GLuint v0, GLuint v1);
typedef void (*PFNGLPROGRAMUNIFORM2UIVPROC) (GLuint program, GLint location, GLsizei count, const GLuint *value);
typedef void (*PFNGLPROGRAMUNIFORM3IPROC) (GLuint program, GLint location, GLint v0, GLint v1, GLint v2);
typedef void (*PFNGLPROGRAMUNIFORM3IVPROC) (GLuint program, GLint location, GLsizei count, const GLint *value);
typedef void (*PFNGLPROGRAMUNIFORM3FPROC) (GLuint program, GLint location, GLfloat v0, GLfloat v1, GLfloat v2);
typedef void (*PFNGLPROGRAMUNIFORM3FVPROC) (GLuint program, GLint location, GLsizei count, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORM3DPROC) (GLuint program, GLint location, GLdouble v0, GLdouble v1, GLdouble v2);
typedef void (*PFNGLPROGRAMUNIFORM3DVPROC) (GLuint program, GLint location, GLsizei count, const GLdouble *value);
typedef void (*PFNGLPROGRAMUNIFORM3UIPROC) (GLuint program, GLint location, GLuint v0, GLuint v1, GLuint v2);
typedef void (*PFNGLPROGRAMUNIFORM3UIVPROC) (GLuint program, GLint location, GLsizei count, const GLuint *value);
typedef void (*PFNGLPROGRAMUNIFORM4IPROC) (GLuint program, GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
typedef void (*PFNGLPROGRAMUNIFORM4IVPROC) (GLuint program, GLint location, GLsizei count, const GLint *value);
typedef void (*PFNGLPROGRAMUNIFORM4FPROC) (GLuint program, GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
typedef void (*PFNGLPROGRAMUNIFORM4FVPROC) (GLuint program, GLint location, GLsizei count, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORM4DPROC) (GLuint program, GLint location, GLdouble v0, GLdouble v1, GLdouble v2, GLdouble v3);
typedef void (*PFNGLPROGRAMUNIFORM4DVPROC) (GLuint program, GLint location, GLsizei count, const GLdouble *value);
typedef void (*PFNGLPROGRAMUNIFORM4UIPROC) (GLuint program, GLint location, GLuint v0, GLuint v1, GLuint v2, GLuint v3);
typedef void (*PFNGLPROGRAMUNIFORM4UIVPROC) (GLuint program, GLint location, GLsizei count, const GLuint *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX2FVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX3FVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX4FVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX2DVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX3DVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX4DVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX2X3FVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX3X2FVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX2X4FVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX4X2FVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX3X4FVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX4X3FVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX2X3DVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX3X2DVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX2X4DVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX4X2DVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX3X4DVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLPROGRAMUNIFORMMATRIX4X3DVPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble *value);
typedef void (*PFNGLVALIDATEPROGRAMPIPELINEPROC) (GLuint pipeline);
typedef void (*PFNGLGETPROGRAMPIPELINEINFOLOGPROC) (GLuint pipeline, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
typedef void (*PFNGLVERTEXATTRIBL1DPROC) (GLuint index, GLdouble x);
typedef void (*PFNGLVERTEXATTRIBL2DPROC) (GLuint index, GLdouble x, GLdouble y);
typedef void (*PFNGLVERTEXATTRIBL3DPROC) (GLuint index, GLdouble x, GLdouble y, GLdouble z);
typedef void (*PFNGLVERTEXATTRIBL4DPROC) (GLuint index, GLdouble x, GLdouble y, GLdouble z, GLdouble w);
typedef void (*PFNGLVERTEXATTRIBL1DVPROC) (GLuint index, const GLdouble *v);
typedef void (*PFNGLVERTEXATTRIBL2DVPROC) (GLuint index, const GLdouble *v);
typedef void (*PFNGLVERTEXATTRIBL3DVPROC) (GLuint index, const GLdouble *v);
typedef void (*PFNGLVERTEXATTRIBL4DVPROC) (GLuint index, const GLdouble *v);
typedef void (*PFNGLVERTEXATTRIBLPOINTERPROC) (GLuint index, GLint size, GLenum type, GLsizei stride, const GLvoid *pointer);
typedef void (*PFNGLGETVERTEXATTRIBLDVPROC) (GLuint index, GLenum pname, GLdouble *params);
typedef void (*PFNGLVIEWPORTARRAYVPROC) (GLuint first, GLsizei count, const GLfloat *v);
typedef void (*PFNGLVIEWPORTINDEXEDFPROC) (GLuint index, GLfloat x, GLfloat y, GLfloat w, GLfloat h);
typedef void (*PFNGLVIEWPORTINDEXEDFVPROC) (GLuint index, const GLfloat *v);
typedef void (*PFNGLSCISSORARRAYVPROC) (GLuint first, GLsizei count, const GLint *v);
typedef void (*PFNGLSCISSORINDEXEDPROC) (GLuint index, GLint left, GLint bottom, GLsizei width, GLsizei height);
typedef void (*PFNGLSCISSORINDEXEDVPROC) (GLuint index, const GLint *v);
typedef void (*PFNGLDEPTHRANGEARRAYVPROC) (GLuint first, GLsizei count, const GLclampd *v);
typedef void (*PFNGLDEPTHRANGEINDEXEDPROC) (GLuint index, GLclampd n, GLclampd f);
typedef void (*PFNGLGETFLOATI_VPROC) (GLenum target, GLuint index, GLfloat *data);
typedef void (*PFNGLGETDOUBLEI_VPROC) (GLenum target, GLuint index, GLdouble *data);
typedef GLsync (*PFNGLCREATESYNCFROMCLEVENTARBPROC) (struct _cl_context * context, struct _cl_event * event, GLbitfield flags);
typedef void (*PFNGLDEBUGMESSAGECONTROLARBPROC) (GLenum source, GLenum type, GLenum severity, GLsizei count, const GLuint *ids, GLboolean enabled);
typedef void (*PFNGLDEBUGMESSAGEINSERTARBPROC) (GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *buf);
typedef void (*PFNGLDEBUGMESSAGECALLBACKARBPROC) (GLDEBUGPROCARB callback, const GLvoid *userParam);
typedef GLuint (*PFNGLGETDEBUGMESSAGELOGARBPROC) (GLuint count, GLsizei bufsize, GLenum *sources, GLenum *types, GLuint *ids, GLenum *severities, GLsizei *lengths, GLchar *messageLog);
typedef GLenum (*PFNGLGETGRAPHICSRESETSTATUSARBPROC) (void);
typedef void (*PFNGLGETNMAPDVARBPROC) (GLenum target, GLenum query, GLsizei bufSize, GLdouble *v);
typedef void (*PFNGLGETNMAPFVARBPROC) (GLenum target, GLenum query, GLsizei bufSize, GLfloat *v);
typedef void (*PFNGLGETNMAPIVARBPROC) (GLenum target, GLenum query, GLsizei bufSize, GLint *v);
typedef void (*PFNGLGETNPIXELMAPFVARBPROC) (GLenum map, GLsizei bufSize, GLfloat *values);
typedef void (*PFNGLGETNPIXELMAPUIVARBPROC) (GLenum map, GLsizei bufSize, GLuint *values);
typedef void (*PFNGLGETNPIXELMAPUSVARBPROC) (GLenum map, GLsizei bufSize, GLushort *values);
typedef void (*PFNGLGETNPOLYGONSTIPPLEARBPROC) (GLsizei bufSize, GLubyte *pattern);
typedef void (*PFNGLGETNCOLORTABLEARBPROC) (GLenum target, GLenum format, GLenum type, GLsizei bufSize, GLvoid *table);
typedef void (*PFNGLGETNCONVOLUTIONFILTERARBPROC) (GLenum target, GLenum format, GLenum type, GLsizei bufSize, GLvoid *image);
typedef void (*PFNGLGETNSEPARABLEFILTERARBPROC) (GLenum target, GLenum format, GLenum type, GLsizei rowBufSize, GLvoid *row, GLsizei columnBufSize, GLvoid *column, GLvoid *span);
typedef void (*PFNGLGETNHISTOGRAMARBPROC) (GLenum target, GLboolean reset, GLenum format, GLenum type, GLsizei bufSize, GLvoid *values);
typedef void (*PFNGLGETNMINMAXARBPROC) (GLenum target, GLboolean reset, GLenum format, GLenum type, GLsizei bufSize, GLvoid *values);
typedef void (*PFNGLGETNTEXIMAGEARBPROC) (GLenum target, GLint level, GLenum format, GLenum type, GLsizei bufSize, GLvoid *img);
typedef void (*PFNGLREADNPIXELSARBPROC) (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLsizei bufSize, GLvoid *data);
typedef void (*PFNGLGETNCOMPRESSEDTEXIMAGEARBPROC) (GLenum target, GLint lod, GLsizei bufSize, GLvoid *img);
typedef void (*PFNGLGETNUNIFORMFVARBPROC) (GLuint program, GLint location, GLsizei bufSize, GLfloat *params);
typedef void (*PFNGLGETNUNIFORMIVARBPROC) (GLuint program, GLint location, GLsizei bufSize, GLint *params);
typedef void (*PFNGLGETNUNIFORMUIVARBPROC) (GLuint program, GLint location, GLsizei bufSize, GLuint *params);
typedef void (*PFNGLGETNUNIFORMDVARBPROC) (GLuint program, GLint location, GLsizei bufSize, GLdouble *params);
typedef void (*PFNGLDRAWARRAYSINSTANCEDBASEINSTANCEPROC) (GLenum mode, GLint first, GLsizei count, GLsizei primcount, GLuint baseinstance);
typedef void (*PFNGLDRAWELEMENTSINSTANCEDBASEINSTANCEPROC) (GLenum mode, GLsizei count, GLenum type, const void *indices, GLsizei primcount, GLuint baseinstance);
typedef void (*PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXBASEINSTANCEPROC) (GLenum mode, GLsizei count, GLenum type, const void *indices, GLsizei primcount, GLint basevertex, GLuint baseinstance);
typedef void (*PFNGLDRAWTRANSFORMFEEDBACKINSTANCEDPROC) (GLenum mode, GLuint id, GLsizei primcount);
typedef void (*PFNGLDRAWTRANSFORMFEEDBACKSTREAMINSTANCEDPROC) (GLenum mode, GLuint id, GLuint stream, GLsizei primcount);
typedef void (*PFNGLGETINTERNALFORMATIVPROC) (GLenum target, GLenum internalformat, GLenum pname, GLsizei bufSize, GLint *params);
typedef void (*PFNGLGETACTIVEATOMICCOUNTERBUFFERIVPROC) (GLuint program, GLuint bufferIndex, GLenum pname, GLint *params);
typedef void (*PFNGLBINDIMAGETEXTUREPROC) (GLuint unit, GLuint texture, GLint level, GLboolean layered, GLint layer, GLenum access, GLenum format);
typedef void (*PFNGLMEMORYBARRIERPROC) (GLbitfield barriers);
typedef void (*PFNGLTEXSTORAGE1DPROC) (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width);
typedef void (*PFNGLTEXSTORAGE2DPROC) (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height);
typedef void (*PFNGLTEXSTORAGE3DPROC) (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth);
typedef void (*PFNGLTEXTURESTORAGE1DEXTPROC) (GLuint texture, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width);
typedef void (*PFNGLTEXTURESTORAGE2DEXTPROC) (GLuint texture, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height);
typedef void (*PFNGLTEXTURESTORAGE3DEXTPROC) (GLuint texture, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth);
]]

ffi.cdef[[
extern void (*glXGetProcAddress(const GLubyte *procname))( void );
]]

local debugging = true

setmetatable(gl, {
  __index = function (t, k)
    local fn = libgl.glXGetProcAddress(k)
    if fn ~= nil then
      t[k] = ffi.cast('PFN' .. k:upper() .. 'PROC', fn)

      if debugging and k ~= 'glGetError' then
        local fn = t[k]
        t[k] = function (...)
          local ret = fn(...)
          local err = gl.glGetError()
          if err ~= gl.GL_NO_ERROR then
            error('gl error ' .. err)
          end
          return ret
        end
      end

      return t[k]
    else
      return nil
    end
  end
})

return gl