text: 
  #pragma once
  
  
  #include <glbinding/nogl.h>
  
  #include <glbinding/gl/enum.h>
  
  
  namespace gl41
  {
  
  
  // import enums to namespace
  using gl::GL_ACTIVE_ATTRIBUTE_MAX_LENGTH;
  using gl::GL_ACTIVE_ATTRIBUTES;
  using gl::GL_ACTIVE_PROGRAM;
  using gl::GL_ACTIVE_SUBROUTINE_MAX_LENGTH;
  using gl::GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS;
  using gl::GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH;
  using gl::GL_ACTIVE_SUBROUTINE_UNIFORMS;
  using gl::GL_ACTIVE_SUBROUTINES;
  using gl::GL_ACTIVE_TEXTURE;
  using gl::GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH;
  using gl::GL_ACTIVE_UNIFORM_BLOCKS;
  using gl::GL_ACTIVE_UNIFORM_MAX_LENGTH;
  using gl::GL_ACTIVE_UNIFORMS;
  using gl::GL_ALIASED_LINE_WIDTH_RANGE;
  using gl::GL_ALPHA;
  using gl::GL_ALREADY_SIGNALED;
  using gl::GL_ALWAYS;
  using gl::GL_AND;
  using gl::GL_AND_INVERTED;
  using gl::GL_AND_REVERSE;
  using gl::GL_ANY_SAMPLES_PASSED;
  using gl::GL_ARRAY_BUFFER;
  using gl::GL_ARRAY_BUFFER_BINDING;
  using gl::GL_ATTACHED_SHADERS;
  using gl::GL_BACK;
  using gl::GL_BACK_LEFT;
  using gl::GL_BACK_RIGHT;
  using gl::GL_BGR;
  using gl::GL_BGR_INTEGER;
  using gl::GL_BGRA;
  using gl::GL_BGRA_INTEGER;
  using gl::GL_BLEND;
  using gl::GL_BLEND_COLOR;
  using gl::GL_BLEND_DST;
  using gl::GL_BLEND_DST_ALPHA;
  using gl::GL_BLEND_DST_RGB;
  using gl::GL_BLEND_EQUATION;
  using gl::GL_BLEND_EQUATION_ALPHA;
  using gl::GL_BLEND_EQUATION_RGB;
  using gl::GL_BLEND_SRC;
  using gl::GL_BLEND_SRC_ALPHA;
  using gl::GL_BLEND_SRC_RGB;
  using gl::GL_BLUE;
  using gl::GL_BLUE_INTEGER;
  using gl::GL_BOOL;
  using gl::GL_BOOL_VEC2;
  using gl::GL_BOOL_VEC3;
  using gl::GL_BOOL_VEC4;
  using gl::GL_BUFFER_ACCESS;
  using gl::GL_BUFFER_ACCESS_FLAGS;
  using gl::GL_BUFFER_MAP_LENGTH;
  using gl::GL_BUFFER_MAP_OFFSET;
  using gl::GL_BUFFER_MAP_POINTER;
  using gl::GL_BUFFER_MAPPED;
  using gl::GL_BUFFER_SIZE;
  using gl::GL_BUFFER_USAGE;
  using gl::GL_BYTE;
  using gl::GL_CCW;
  using gl::GL_CLAMP_READ_COLOR;
  using gl::GL_CLAMP_TO_BORDER;
  using gl::GL_CLAMP_TO_EDGE;
  using gl::GL_CLEAR;
  using gl::GL_CLIP_DISTANCE0;
  using gl::GL_CLIP_DISTANCE1;
  using gl::GL_CLIP_DISTANCE2;
  using gl::GL_CLIP_DISTANCE3;
  using gl::GL_CLIP_DISTANCE4;
  using gl::GL_CLIP_DISTANCE5;
  using gl::GL_CLIP_DISTANCE6;
  using gl::GL_CLIP_DISTANCE7;
  using gl::GL_COLOR;
  using gl::GL_COLOR_ATTACHMENT0;
  using gl::GL_COLOR_ATTACHMENT1;
  using gl::GL_COLOR_ATTACHMENT10;
  using gl::GL_COLOR_ATTACHMENT11;
  using gl::GL_COLOR_ATTACHMENT12;
  using gl::GL_COLOR_ATTACHMENT13;
  using gl::GL_COLOR_ATTACHMENT14;
  using gl::GL_COLOR_ATTACHMENT15;
  using gl::GL_COLOR_ATTACHMENT16;
  using gl::GL_COLOR_ATTACHMENT17;
  using gl::GL_COLOR_ATTACHMENT18;
  using gl::GL_COLOR_ATTACHMENT19;
  using gl::GL_COLOR_ATTACHMENT2;
  using gl::GL_COLOR_ATTACHMENT20;
  using gl::GL_COLOR_ATTACHMENT21;
  using gl::GL_COLOR_ATTACHMENT22;
  using gl::GL_COLOR_ATTACHMENT23;
  using gl::GL_COLOR_ATTACHMENT24;
  using gl::GL_COLOR_ATTACHMENT25;
  using gl::GL_COLOR_ATTACHMENT26;
  using gl::GL_COLOR_ATTACHMENT27;
  using gl::GL_COLOR_ATTACHMENT28;
  using gl::GL_COLOR_ATTACHMENT29;
  using gl::GL_COLOR_ATTACHMENT3;
  using gl::GL_COLOR_ATTACHMENT30;
  using gl::GL_COLOR_ATTACHMENT31;
  using gl::GL_COLOR_ATTACHMENT4;
  using gl::GL_COLOR_ATTACHMENT5;
  using gl::GL_COLOR_ATTACHMENT6;
  using gl::GL_COLOR_ATTACHMENT7;
  using gl::GL_COLOR_ATTACHMENT8;
  using gl::GL_COLOR_ATTACHMENT9;
  using gl::GL_COLOR_CLEAR_VALUE;
  using gl::GL_COLOR_LOGIC_OP;
  using gl::GL_COLOR_WRITEMASK;
  using gl::GL_COMPARE_REF_TO_TEXTURE;
  using gl::GL_COMPATIBLE_SUBROUTINES;
  using gl::GL_COMPILE_STATUS;
  using gl::GL_COMPRESSED_RED;
  using gl::GL_COMPRESSED_RED_RGTC1;
  using gl::GL_COMPRESSED_RG;
  using gl::GL_COMPRESSED_RG_RGTC2;
  using gl::GL_COMPRESSED_RGB;
  using gl::GL_COMPRESSED_RGBA;
  using gl::GL_COMPRESSED_SIGNED_RED_RGTC1;
  using gl::GL_COMPRESSED_SIGNED_RG_RGTC2;
  using gl::GL_COMPRESSED_SRGB;
  using gl::GL_COMPRESSED_SRGB_ALPHA;
  using gl::GL_COMPRESSED_TEXTURE_FORMATS;
  using gl::GL_CONDITION_SATISFIED;
  using gl::GL_CONSTANT_ALPHA;
  using gl::GL_CONSTANT_COLOR;
  using gl::GL_CONTEXT_FLAGS;
  using gl::GL_CONTEXT_PROFILE_MASK;
  using gl::GL_COPY;
  using gl::GL_COPY_INVERTED;
  using gl::GL_COPY_READ_BUFFER;
  using gl::GL_COPY_WRITE_BUFFER;
  using gl::GL_CULL_FACE;
  using gl::GL_CULL_FACE_MODE;
  using gl::GL_CURRENT_PROGRAM;
  using gl::GL_CURRENT_QUERY;
  using gl::GL_CURRENT_VERTEX_ATTRIB;
  using gl::GL_CW;
  using gl::GL_DECR;
  using gl::GL_DECR_WRAP;
  using gl::GL_DELETE_STATUS;
  using gl::GL_DEPTH;
  using gl::GL_DEPTH24_STENCIL8;
  using gl::GL_DEPTH32F_STENCIL8;
  using gl::GL_DEPTH_ATTACHMENT;
  using gl::GL_DEPTH_CLAMP;
  using gl::GL_DEPTH_CLEAR_VALUE;
  using gl::GL_DEPTH_COMPONENT;
  using gl::GL_DEPTH_COMPONENT16;
  using gl::GL_DEPTH_COMPONENT24;
  using gl::GL_DEPTH_COMPONENT32;
  using gl::GL_DEPTH_COMPONENT32F;
  using gl::GL_DEPTH_FUNC;
  using gl::GL_DEPTH_RANGE;
  using gl::GL_DEPTH_STENCIL;
  using gl::GL_DEPTH_STENCIL_ATTACHMENT;
  using gl::GL_DEPTH_TEST;
  using gl::GL_DEPTH_WRITEMASK;
  using gl::GL_DITHER;
  using gl::GL_DONT_CARE;
  using gl::GL_DOUBLE;
  using gl::GL_DOUBLE_MAT2;
  using gl::GL_DOUBLE_MAT2x3;
  using gl::GL_DOUBLE_MAT2x4;
  using gl::GL_DOUBLE_MAT3;
  using gl::GL_DOUBLE_MAT3x2;
  using gl::GL_DOUBLE_MAT3x4;
  using gl::GL_DOUBLE_MAT4;
  using gl::GL_DOUBLE_MAT4x2;
  using gl::GL_DOUBLE_MAT4x3;
  using gl::GL_DOUBLE_VEC2;
  using gl::GL_DOUBLE_VEC3;
  using gl::GL_DOUBLE_VEC4;
  using gl::GL_DOUBLEBUFFER;
  using gl::GL_DRAW_BUFFER;
  using gl::GL_DRAW_BUFFER0;
  using gl::GL_DRAW_BUFFER1;
  using gl::GL_DRAW_BUFFER10;
  using gl::GL_DRAW_BUFFER11;
  using gl::GL_DRAW_BUFFER12;
  using gl::GL_DRAW_BUFFER13;
  using gl::GL_DRAW_BUFFER14;
  using gl::GL_DRAW_BUFFER15;
  using gl::GL_DRAW_BUFFER2;
  using gl::GL_DRAW_BUFFER3;
  using gl::GL_DRAW_BUFFER4;
  using gl::GL_DRAW_BUFFER5;
  using gl::GL_DRAW_BUFFER6;
  using gl::GL_DRAW_BUFFER7;
  using gl::GL_DRAW_BUFFER8;
  using gl::GL_DRAW_BUFFER9;
  using gl::GL_DRAW_FRAMEBUFFER;
  using gl::GL_DRAW_FRAMEBUFFER_BINDING;
  using gl::GL_DRAW_INDIRECT_BUFFER;
  using gl::GL_DRAW_INDIRECT_BUFFER_BINDING;
  using gl::GL_DST_ALPHA;
  using gl::GL_DST_COLOR;
  using gl::GL_DYNAMIC_COPY;
  using gl::GL_DYNAMIC_DRAW;
  using gl::GL_DYNAMIC_READ;
  using gl::GL_ELEMENT_ARRAY_BUFFER;
  using gl::GL_ELEMENT_ARRAY_BUFFER_BINDING;
  using gl::GL_EQUAL;
  using gl::GL_EQUIV;
  using gl::GL_EXTENSIONS;
  using gl::GL_FASTEST;
  using gl::GL_FILL;
  using gl::GL_FIRST_VERTEX_CONVENTION;
  using gl::GL_FIXED;
  using gl::GL_FIXED_ONLY;
  using gl::GL_FLOAT;
  using gl::GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
  using gl::GL_FLOAT_MAT2;
  using gl::GL_FLOAT_MAT2x3;
  using gl::GL_FLOAT_MAT2x4;
  using gl::GL_FLOAT_MAT3;
  using gl::GL_FLOAT_MAT3x2;
  using gl::GL_FLOAT_MAT3x4;
  using gl::GL_FLOAT_MAT4;
  using gl::GL_FLOAT_MAT4x2;
  using gl::GL_FLOAT_MAT4x3;
  using gl::GL_FLOAT_VEC2;
  using gl::GL_FLOAT_VEC3;
  using gl::GL_FLOAT_VEC4;
  using gl::GL_FRACTIONAL_EVEN;
  using gl::GL_FRACTIONAL_ODD;
  using gl::GL_FRAGMENT_INTERPOLATION_OFFSET_BITS;
  using gl::GL_FRAGMENT_SHADER;
  using gl::GL_FRAGMENT_SHADER_DERIVATIVE_HINT;
  using gl::GL_FRAMEBUFFER;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_LAYERED;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER;
  using gl::GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL;
  using gl::GL_FRAMEBUFFER_BINDING;
  using gl::GL_FRAMEBUFFER_COMPLETE;
  using gl::GL_FRAMEBUFFER_DEFAULT;
  using gl::GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
  using gl::GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER;
  using gl::GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS;
  using gl::GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT;
  using gl::GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;
  using gl::GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER;
  using gl::GL_FRAMEBUFFER_SRGB;
  using gl::GL_FRAMEBUFFER_UNDEFINED;
  using gl::GL_FRAMEBUFFER_UNSUPPORTED;
  using gl::GL_FRONT;
  using gl::GL_FRONT_AND_BACK;
  using gl::GL_FRONT_FACE;
  using gl::GL_FRONT_LEFT;
  using gl::GL_FRONT_RIGHT;
  using gl::GL_FUNC_ADD;
  using gl::GL_FUNC_REVERSE_SUBTRACT;
  using gl::GL_FUNC_SUBTRACT;
  using gl::GL_GEOMETRY_INPUT_TYPE;
  using gl::GL_GEOMETRY_OUTPUT_TYPE;
  using gl::GL_GEOMETRY_SHADER;
  using gl::GL_GEOMETRY_SHADER_INVOCATIONS;
  using gl::GL_GEOMETRY_VERTICES_OUT;
  using gl::GL_GEQUAL;
  using gl::GL_GREATER;
  using gl::GL_GREEN;
  using gl::GL_GREEN_INTEGER;
  using gl::GL_HALF_FLOAT;
  using gl::GL_HIGH_FLOAT;
  using gl::GL_HIGH_INT;
  using gl::GL_IMPLEMENTATION_COLOR_READ_FORMAT;
  using gl::GL_IMPLEMENTATION_COLOR_READ_TYPE;
  using gl::GL_INCR;
  using gl::GL_INCR_WRAP;
  using gl::GL_INFO_LOG_LENGTH;
  using gl::GL_INT;
  using gl::GL_INT_2_10_10_10_REV;
  using gl::GL_INT_SAMPLER_1D;
  using gl::GL_INT_SAMPLER_1D_ARRAY;
  using gl::GL_INT_SAMPLER_2D;
  using gl::GL_INT_SAMPLER_2D_ARRAY;
  using gl::GL_INT_SAMPLER_2D_MULTISAMPLE;
  using gl::GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY;
  using gl::GL_INT_SAMPLER_2D_RECT;
  using gl::GL_INT_SAMPLER_3D;
  using gl::GL_INT_SAMPLER_BUFFER;
  using gl::GL_INT_SAMPLER_CUBE;
  using gl::GL_INT_SAMPLER_CUBE_MAP_ARRAY;
  using gl::GL_INT_VEC2;
  using gl::GL_INT_VEC3;
  using gl::GL_INT_VEC4;
  using gl::GL_INTERLEAVED_ATTRIBS;
  using gl::GL_INVALID_ENUM;
  using gl::GL_INVALID_FRAMEBUFFER_OPERATION;
  using gl::GL_INVALID_OPERATION;
  using gl::GL_INVALID_VALUE;
  using gl::GL_INVERT;
  using gl::GL_ISOLINES;
  using gl::GL_KEEP;
  using gl::GL_LAST_VERTEX_CONVENTION;
  using gl::GL_LAYER_PROVOKING_VERTEX;
  using gl::GL_LEFT;
  using gl::GL_LEQUAL;
  using gl::GL_LESS;
  using gl::GL_LINE;
  using gl::GL_LINE_LOOP;
  using gl::GL_LINE_SMOOTH;
  using gl::GL_LINE_SMOOTH_HINT;
  using gl::GL_LINE_STRIP;
  using gl::GL_LINE_STRIP_ADJACENCY;
  using gl::GL_LINE_WIDTH;
  using gl::GL_LINE_WIDTH_GRANULARITY;
  using gl::GL_LINE_WIDTH_RANGE;
  using gl::GL_LINEAR;
  using gl::GL_LINEAR_MIPMAP_LINEAR;
  using gl::GL_LINEAR_MIPMAP_NEAREST;
  using gl::GL_LINES;
  using gl::GL_LINES_ADJACENCY;
  using gl::GL_LINK_STATUS;
  using gl::GL_LOGIC_OP_MODE;
  using gl::GL_LOW_FLOAT;
  using gl::GL_LOW_INT;
  using gl::GL_LOWER_LEFT;
  using gl::GL_MAJOR_VERSION;
  using gl::GL_MAX;
  using gl::GL_MAX_3D_TEXTURE_SIZE;
  using gl::GL_MAX_ARRAY_TEXTURE_LAYERS;
  using gl::GL_MAX_CLIP_DISTANCES;
  using gl::GL_MAX_COLOR_ATTACHMENTS;
  using gl::GL_MAX_COLOR_TEXTURE_SAMPLES;
  using gl::GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS;
  using gl::GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS;
  using gl::GL_MAX_COMBINED_TESS_CONTROL_UNIFORM_COMPONENTS;
  using gl::GL_MAX_COMBINED_TESS_EVALUATION_UNIFORM_COMPONENTS;
  using gl::GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS;
  using gl::GL_MAX_COMBINED_UNIFORM_BLOCKS;
  using gl::GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS;
  using gl::GL_MAX_CUBE_MAP_TEXTURE_SIZE;
  using gl::GL_MAX_DEPTH_TEXTURE_SAMPLES;
  using gl::GL_MAX_DRAW_BUFFERS;
  using gl::GL_MAX_DUAL_SOURCE_DRAW_BUFFERS;
  using gl::GL_MAX_ELEMENTS_INDICES;
  using gl::GL_MAX_ELEMENTS_VERTICES;
  using gl::GL_MAX_FRAGMENT_INPUT_COMPONENTS;
  using gl::GL_MAX_FRAGMENT_INTERPOLATION_OFFSET;
  using gl::GL_MAX_FRAGMENT_UNIFORM_BLOCKS;
  using gl::GL_MAX_FRAGMENT_UNIFORM_COMPONENTS;
  using gl::GL_MAX_FRAGMENT_UNIFORM_VECTORS;
  using gl::GL_MAX_GEOMETRY_INPUT_COMPONENTS;
  using gl::GL_MAX_GEOMETRY_OUTPUT_COMPONENTS;
  using gl::GL_MAX_GEOMETRY_OUTPUT_VERTICES;
  using gl::GL_MAX_GEOMETRY_SHADER_INVOCATIONS;
  using gl::GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS;
  using gl::GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS;
  using gl::GL_MAX_GEOMETRY_UNIFORM_BLOCKS;
  using gl::GL_MAX_GEOMETRY_UNIFORM_COMPONENTS;
  using gl::GL_MAX_INTEGER_SAMPLES;
  using gl::GL_MAX_PATCH_VERTICES;
  using gl::GL_MAX_PROGRAM_TEXEL_OFFSET;
  using gl::GL_MAX_PROGRAM_TEXTURE_GATHER_OFFSET;
  using gl::GL_MAX_RECTANGLE_TEXTURE_SIZE;
  using gl::GL_MAX_RENDERBUFFER_SIZE;
  using gl::GL_MAX_SAMPLE_MASK_WORDS;
  using gl::GL_MAX_SAMPLES;
  using gl::GL_MAX_SERVER_WAIT_TIMEOUT;
  using gl::GL_MAX_SUBROUTINE_UNIFORM_LOCATIONS;
  using gl::GL_MAX_SUBROUTINES;
  using gl::GL_MAX_TESS_CONTROL_INPUT_COMPONENTS;
  using gl::GL_MAX_TESS_CONTROL_OUTPUT_COMPONENTS;
  using gl::GL_MAX_TESS_CONTROL_TEXTURE_IMAGE_UNITS;
  using gl::GL_MAX_TESS_CONTROL_TOTAL_OUTPUT_COMPONENTS;
  using gl::GL_MAX_TESS_CONTROL_UNIFORM_BLOCKS;
  using gl::GL_MAX_TESS_CONTROL_UNIFORM_COMPONENTS;
  using gl::GL_MAX_TESS_EVALUATION_INPUT_COMPONENTS;
  using gl::GL_MAX_TESS_EVALUATION_OUTPUT_COMPONENTS;
  using gl::GL_MAX_TESS_EVALUATION_TEXTURE_IMAGE_UNITS;
  using gl::GL_MAX_TESS_EVALUATION_UNIFORM_BLOCKS;
  using gl::GL_MAX_TESS_EVALUATION_UNIFORM_COMPONENTS;
  using gl::GL_MAX_TESS_GEN_LEVEL;
  using gl::GL_MAX_TESS_PATCH_COMPONENTS;
  using gl::GL_MAX_TEXTURE_BUFFER_SIZE;
  using gl::GL_MAX_TEXTURE_IMAGE_UNITS;
  using gl::GL_MAX_TEXTURE_LOD_BIAS;
  using gl::GL_MAX_TEXTURE_SIZE;
  using gl::GL_MAX_TRANSFORM_FEEDBACK_BUFFERS;
  using gl::GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS;
  using gl::GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS;
  using gl::GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS;
  using gl::GL_MAX_UNIFORM_BLOCK_SIZE;
  using gl::GL_MAX_UNIFORM_BUFFER_BINDINGS;
  using gl::GL_MAX_VARYING_COMPONENTS;
  using gl::GL_MAX_VARYING_FLOATS;
  using gl::GL_MAX_VARYING_VECTORS;
  using gl::GL_MAX_VERTEX_ATTRIBS;
  using gl::GL_MAX_VERTEX_OUTPUT_COMPONENTS;
  using gl::GL_MAX_VERTEX_STREAMS;
  using gl::GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS;
  using gl::GL_MAX_VERTEX_UNIFORM_BLOCKS;
  using gl::GL_MAX_VERTEX_UNIFORM_COMPONENTS;
  using gl::GL_MAX_VERTEX_UNIFORM_VECTORS;
  using gl::GL_MAX_VIEWPORT_DIMS;
  using gl::GL_MAX_VIEWPORTS;
  using gl::GL_MEDIUM_FLOAT;
  using gl::GL_MEDIUM_INT;
  using gl::GL_MIN;
  using gl::GL_MIN_FRAGMENT_INTERPOLATION_OFFSET;
  using gl::GL_MIN_PROGRAM_TEXEL_OFFSET;
  using gl::GL_MIN_PROGRAM_TEXTURE_GATHER_OFFSET;
  using gl::GL_MIN_SAMPLE_SHADING_VALUE;
  using gl::GL_MINOR_VERSION;
  using gl::GL_MIRRORED_REPEAT;
  using gl::GL_MULTISAMPLE;
  using gl::GL_NAND;
  using gl::GL_NEAREST;
  using gl::GL_NEAREST_MIPMAP_LINEAR;
  using gl::GL_NEAREST_MIPMAP_NEAREST;
  using gl::GL_NEVER;
  using gl::GL_NICEST;
  using gl::GL_NO_ERROR;
  using gl::GL_NONE;
  using gl::GL_NOOP;
  using gl::GL_NOR;
  using gl::GL_NOTEQUAL;
  using gl::GL_NUM_COMPATIBLE_SUBROUTINES;
  using gl::GL_NUM_COMPRESSED_TEXTURE_FORMATS;
  using gl::GL_NUM_EXTENSIONS;
  using gl::GL_NUM_PROGRAM_BINARY_FORMATS;
  using gl::GL_NUM_SHADER_BINARY_FORMATS;
  using gl::GL_OBJECT_TYPE;
  using gl::GL_ONE;
  using gl::GL_ONE_MINUS_CONSTANT_ALPHA;
  using gl::GL_ONE_MINUS_CONSTANT_COLOR;
  using gl::GL_ONE_MINUS_DST_ALPHA;
  using gl::GL_ONE_MINUS_DST_COLOR;
  using gl::GL_ONE_MINUS_SRC1_ALPHA;
  using gl::GL_ONE_MINUS_SRC1_COLOR;
  using gl::GL_ONE_MINUS_SRC_ALPHA;
  using gl::GL_ONE_MINUS_SRC_COLOR;
  using gl::GL_OR;
  using gl::GL_OR_INVERTED;
  using gl::GL_OR_REVERSE;
  using gl::GL_OUT_OF_MEMORY;
  using gl::GL_PACK_ALIGNMENT;
  using gl::GL_PACK_IMAGE_HEIGHT;
  using gl::GL_PACK_LSB_FIRST;
  using gl::GL_PACK_ROW_LENGTH;
  using gl::GL_PACK_SKIP_IMAGES;
  using gl::GL_PACK_SKIP_PIXELS;
  using gl::GL_PACK_SKIP_ROWS;
  using gl::GL_PACK_SWAP_BYTES;
  using gl::GL_PATCH_DEFAULT_INNER_LEVEL;
  using gl::GL_PATCH_DEFAULT_OUTER_LEVEL;
  using gl::GL_PATCH_VERTICES;
  using gl::GL_PATCHES;
  using gl::GL_PIXEL_PACK_BUFFER;
  using gl::GL_PIXEL_PACK_BUFFER_BINDING;
  using gl::GL_PIXEL_UNPACK_BUFFER;
  using gl::GL_PIXEL_UNPACK_BUFFER_BINDING;
  using gl::GL_POINT;
  using gl::GL_POINT_FADE_THRESHOLD_SIZE;
  using gl::GL_POINT_SIZE;
  using gl::GL_POINT_SIZE_GRANULARITY;
  using gl::GL_POINT_SIZE_RANGE;
  using gl::GL_POINT_SPRITE_COORD_ORIGIN;
  using gl::GL_POINTS;
  using gl::GL_POLYGON_MODE;
  using gl::GL_POLYGON_OFFSET_FACTOR;
  using gl::GL_POLYGON_OFFSET_FILL;
  using gl::GL_POLYGON_OFFSET_LINE;
  using gl::GL_POLYGON_OFFSET_POINT;
  using gl::GL_POLYGON_OFFSET_UNITS;
  using gl::GL_POLYGON_SMOOTH;
  using gl::GL_POLYGON_SMOOTH_HINT;
  using gl::GL_PRIMITIVE_RESTART;
  using gl::GL_PRIMITIVE_RESTART_INDEX;
  using gl::GL_PRIMITIVES_GENERATED;
  using gl::GL_PROGRAM_BINARY_FORMATS;
  using gl::GL_PROGRAM_BINARY_LENGTH;
  using gl::GL_PROGRAM_BINARY_RETRIEVABLE_HINT;
  using gl::GL_PROGRAM_PIPELINE_BINDING;
  using gl::GL_PROGRAM_POINT_SIZE;
  using gl::GL_PROGRAM_SEPARABLE;
  using gl::GL_PROVOKING_VERTEX;
  using gl::GL_PROXY_TEXTURE_1D;
  using gl::GL_PROXY_TEXTURE_1D_ARRAY;
  using gl::GL_PROXY_TEXTURE_2D;
  using gl::GL_PROXY_TEXTURE_2D_ARRAY;
  using gl::GL_PROXY_TEXTURE_2D_MULTISAMPLE;
  using gl::GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY;
  using gl::GL_PROXY_TEXTURE_3D;
  using gl::GL_PROXY_TEXTURE_CUBE_MAP;
  using gl::GL_PROXY_TEXTURE_CUBE_MAP_ARRAY;
  using gl::GL_PROXY_TEXTURE_RECTANGLE;
  using gl::GL_QUADS;
  using gl::GL_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION;
  using gl::GL_QUERY_BY_REGION_NO_WAIT;
  using gl::GL_QUERY_BY_REGION_WAIT;
  using gl::GL_QUERY_COUNTER_BITS;
  using gl::GL_QUERY_NO_WAIT;
  using gl::GL_QUERY_RESULT;
  using gl::GL_QUERY_RESULT_AVAILABLE;
  using gl::GL_QUERY_WAIT;
  using gl::GL_R11F_G11F_B10F;
  using gl::GL_R16;
  using gl::GL_R16_SNORM;
  using gl::GL_R16F;
  using gl::GL_R16I;
  using gl::GL_R16UI;
  using gl::GL_R32F;
  using gl::GL_R32I;
  using gl::GL_R32UI;
  using gl::GL_R3_G3_B2;
  using gl::GL_R8;
  using gl::GL_R8_SNORM;
  using gl::GL_R8I;
  using gl::GL_R8UI;
  using gl::GL_RASTERIZER_DISCARD;
  using gl::GL_READ_BUFFER;
  using gl::GL_READ_FRAMEBUFFER;
  using gl::GL_READ_FRAMEBUFFER_BINDING;
  using gl::GL_READ_ONLY;
  using gl::GL_READ_WRITE;
  using gl::GL_RED;
  using gl::GL_RED_INTEGER;
  using gl::GL_RENDERBUFFER;
  using gl::GL_RENDERBUFFER_ALPHA_SIZE;
  using gl::GL_RENDERBUFFER_BINDING;
  using gl::GL_RENDERBUFFER_BLUE_SIZE;
  using gl::GL_RENDERBUFFER_DEPTH_SIZE;
  using gl::GL_RENDERBUFFER_GREEN_SIZE;
  using gl::GL_RENDERBUFFER_HEIGHT;
  using gl::GL_RENDERBUFFER_INTERNAL_FORMAT;
  using gl::GL_RENDERBUFFER_RED_SIZE;
  using gl::GL_RENDERBUFFER_SAMPLES;
  using gl::GL_RENDERBUFFER_STENCIL_SIZE;
  using gl::GL_RENDERBUFFER_WIDTH;
  using gl::GL_RENDERER;
  using gl::GL_REPEAT;
  using gl::GL_REPLACE;
  using gl::GL_RG;
  using gl::GL_RG16;
  using gl::GL_RG16_SNORM;
  using gl::GL_RG16F;
  using gl::GL_RG16I;
  using gl::GL_RG16UI;
  using gl::GL_RG32F;
  using gl::GL_RG32I;
  using gl::GL_RG32UI;
  using gl::GL_RG8;
  using gl::GL_RG8_SNORM;
  using gl::GL_RG8I;
  using gl::GL_RG8UI;
  using gl::GL_RG_INTEGER;
  using gl::GL_RGB;
  using gl::GL_RGB10;
  using gl::GL_RGB10_A2;
  using gl::GL_RGB10_A2UI;
  using gl::GL_RGB12;
  using gl::GL_RGB16;
  using gl::GL_RGB16_SNORM;
  using gl::GL_RGB16F;
  using gl::GL_RGB16I;
  using gl::GL_RGB16UI;
  using gl::GL_RGB32F;
  using gl::GL_RGB32I;
  using gl::GL_RGB32UI;
  using gl::GL_RGB4;
  using gl::GL_RGB5;
  using gl::GL_RGB565;
  using gl::GL_RGB5_A1;
  using gl::GL_RGB8;
  using gl::GL_RGB8_SNORM;
  using gl::GL_RGB8I;
  using gl::GL_RGB8UI;
  using gl::GL_RGB9_E5;
  using gl::GL_RGB_INTEGER;
  using gl::GL_RGBA;
  using gl::GL_RGBA12;
  using gl::GL_RGBA16;
  using gl::GL_RGBA16_SNORM;
  using gl::GL_RGBA16F;
  using gl::GL_RGBA16I;
  using gl::GL_RGBA16UI;
  using gl::GL_RGBA2;
  using gl::GL_RGBA32F;
  using gl::GL_RGBA32I;
  using gl::GL_RGBA32UI;
  using gl::GL_RGBA4;
  using gl::GL_RGBA8;
  using gl::GL_RGBA8_SNORM;
  using gl::GL_RGBA8I;
  using gl::GL_RGBA8UI;
  using gl::GL_RGBA_INTEGER;
  using gl::GL_RIGHT;
  using gl::GL_SAMPLE_ALPHA_TO_COVERAGE;
  using gl::GL_SAMPLE_ALPHA_TO_ONE;
  using gl::GL_SAMPLE_BUFFERS;
  using gl::GL_SAMPLE_COVERAGE;
  using gl::GL_SAMPLE_COVERAGE_INVERT;
  using gl::GL_SAMPLE_COVERAGE_VALUE;
  using gl::GL_SAMPLE_MASK;
  using gl::GL_SAMPLE_MASK_VALUE;
  using gl::GL_SAMPLE_POSITION;
  using gl::GL_SAMPLE_SHADING;
  using gl::GL_SAMPLER_1D;
  using gl::GL_SAMPLER_1D_ARRAY;
  using gl::GL_SAMPLER_1D_ARRAY_SHADOW;
  using gl::GL_SAMPLER_1D_SHADOW;
  using gl::GL_SAMPLER_2D;
  using gl::GL_SAMPLER_2D_ARRAY;
  using gl::GL_SAMPLER_2D_ARRAY_SHADOW;
  using gl::GL_SAMPLER_2D_MULTISAMPLE;
  using gl::GL_SAMPLER_2D_MULTISAMPLE_ARRAY;
  using gl::GL_SAMPLER_2D_RECT;
  using gl::GL_SAMPLER_2D_RECT_SHADOW;
  using gl::GL_SAMPLER_2D_SHADOW;
  using gl::GL_SAMPLER_3D;
  using gl::GL_SAMPLER_BINDING;
  using gl::GL_SAMPLER_BUFFER;
  using gl::GL_SAMPLER_CUBE;
  using gl::GL_SAMPLER_CUBE_MAP_ARRAY;
  using gl::GL_SAMPLER_CUBE_MAP_ARRAY_SHADOW;
  using gl::GL_SAMPLER_CUBE_SHADOW;
  using gl::GL_SAMPLES;
  using gl::GL_SAMPLES_PASSED;
  using gl::GL_SCISSOR_BOX;
  using gl::GL_SCISSOR_TEST;
  using gl::GL_SEPARATE_ATTRIBS;
  using gl::GL_SET;
  using gl::GL_SHADER_BINARY_FORMATS;
  using gl::GL_SHADER_COMPILER;
  using gl::GL_SHADER_SOURCE_LENGTH;
  using gl::GL_SHADER_TYPE;
  using gl::GL_SHADING_LANGUAGE_VERSION;
  using gl::GL_SHORT;
  using gl::GL_SIGNALED;
  using gl::GL_SIGNED_NORMALIZED;
  using gl::GL_SMOOTH_LINE_WIDTH_GRANULARITY;
  using gl::GL_SMOOTH_LINE_WIDTH_RANGE;
  using gl::GL_SMOOTH_POINT_SIZE_GRANULARITY;
  using gl::GL_SMOOTH_POINT_SIZE_RANGE;
  using gl::GL_SRC1_ALPHA;
  using gl::GL_SRC1_COLOR;
  using gl::GL_SRC_ALPHA;
  using gl::GL_SRC_ALPHA_SATURATE;
  using gl::GL_SRC_COLOR;
  using gl::GL_SRGB;
  using gl::GL_SRGB8;
  using gl::GL_SRGB8_ALPHA8;
  using gl::GL_SRGB_ALPHA;
  using gl::GL_STATIC_COPY;
  using gl::GL_STATIC_DRAW;
  using gl::GL_STATIC_READ;
  using gl::GL_STENCIL;
  using gl::GL_STENCIL_ATTACHMENT;
  using gl::GL_STENCIL_BACK_FAIL;
  using gl::GL_STENCIL_BACK_FUNC;
  using gl::GL_STENCIL_BACK_PASS_DEPTH_FAIL;
  using gl::GL_STENCIL_BACK_PASS_DEPTH_PASS;
  using gl::GL_STENCIL_BACK_REF;
  using gl::GL_STENCIL_BACK_VALUE_MASK;
  using gl::GL_STENCIL_BACK_WRITEMASK;
  using gl::GL_STENCIL_CLEAR_VALUE;
  using gl::GL_STENCIL_FAIL;
  using gl::GL_STENCIL_FUNC;
  using gl::GL_STENCIL_INDEX;
  using gl::GL_STENCIL_INDEX1;
  using gl::GL_STENCIL_INDEX16;
  using gl::GL_STENCIL_INDEX4;
  using gl::GL_STENCIL_INDEX8;
  using gl::GL_STENCIL_PASS_DEPTH_FAIL;
  using gl::GL_STENCIL_PASS_DEPTH_PASS;
  using gl::GL_STENCIL_REF;
  using gl::GL_STENCIL_TEST;
  using gl::GL_STENCIL_VALUE_MASK;
  using gl::GL_STENCIL_WRITEMASK;
  using gl::GL_STEREO;
  using gl::GL_STREAM_COPY;
  using gl::GL_STREAM_DRAW;
  using gl::GL_STREAM_READ;
  using gl::GL_SUBPIXEL_BITS;
  using gl::GL_SYNC_CONDITION;
  using gl::GL_SYNC_FENCE;
  using gl::GL_SYNC_FLAGS;
  using gl::GL_SYNC_GPU_COMMANDS_COMPLETE;
  using gl::GL_SYNC_STATUS;
  using gl::GL_TESS_CONTROL_OUTPUT_VERTICES;
  using gl::GL_TESS_CONTROL_SHADER;
  using gl::GL_TESS_EVALUATION_SHADER;
  using gl::GL_TESS_GEN_MODE;
  using gl::GL_TESS_GEN_POINT_MODE;
  using gl::GL_TESS_GEN_SPACING;
  using gl::GL_TESS_GEN_VERTEX_ORDER;
  using gl::GL_TEXTURE;
  using gl::GL_TEXTURE0;
  using gl::GL_TEXTURE1;
  using gl::GL_TEXTURE10;
  using gl::GL_TEXTURE11;
  using gl::GL_TEXTURE12;
  using gl::GL_TEXTURE13;
  using gl::GL_TEXTURE14;
  using gl::GL_TEXTURE15;
  using gl::GL_TEXTURE16;
  using gl::GL_TEXTURE17;
  using gl::GL_TEXTURE18;
  using gl::GL_TEXTURE19;
  using gl::GL_TEXTURE2;
  using gl::GL_TEXTURE20;
  using gl::GL_TEXTURE21;
  using gl::GL_TEXTURE22;
  using gl::GL_TEXTURE23;
  using gl::GL_TEXTURE24;
  using gl::GL_TEXTURE25;
  using gl::GL_TEXTURE26;
  using gl::GL_TEXTURE27;
  using gl::GL_TEXTURE28;
  using gl::GL_TEXTURE29;
  using gl::GL_TEXTURE3;
  using gl::GL_TEXTURE30;
  using gl::GL_TEXTURE31;
  using gl::GL_TEXTURE4;
  using gl::GL_TEXTURE5;
  using gl::GL_TEXTURE6;
  using gl::GL_TEXTURE7;
  using gl::GL_TEXTURE8;
  using gl::GL_TEXTURE9;
  using gl::GL_TEXTURE_1D;
  using gl::GL_TEXTURE_1D_ARRAY;
  using gl::GL_TEXTURE_2D;
  using gl::GL_TEXTURE_2D_ARRAY;
  using gl::GL_TEXTURE_2D_MULTISAMPLE;
  using gl::GL_TEXTURE_2D_MULTISAMPLE_ARRAY;
  using gl::GL_TEXTURE_3D;
  using gl::GL_TEXTURE_ALPHA_SIZE;
  using gl::GL_TEXTURE_ALPHA_TYPE;
  using gl::GL_TEXTURE_BASE_LEVEL;
  using gl::GL_TEXTURE_BINDING_1D;
  using gl::GL_TEXTURE_BINDING_1D_ARRAY;
  using gl::GL_TEXTURE_BINDING_2D;
  using gl::GL_TEXTURE_BINDING_2D_ARRAY;
  using gl::GL_TEXTURE_BINDING_2D_MULTISAMPLE;
  using gl::GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY;
  using gl::GL_TEXTURE_BINDING_3D;
  using gl::GL_TEXTURE_BINDING_BUFFER;
  using gl::GL_TEXTURE_BINDING_CUBE_MAP;
  using gl::GL_TEXTURE_BINDING_CUBE_MAP_ARRAY;
  using gl::GL_TEXTURE_BINDING_RECTANGLE;
  using gl::GL_TEXTURE_BLUE_SIZE;
  using gl::GL_TEXTURE_BLUE_TYPE;
  using gl::GL_TEXTURE_BORDER_COLOR;
  using gl::GL_TEXTURE_BUFFER;
  using gl::GL_TEXTURE_BUFFER_DATA_STORE_BINDING;
  using gl::GL_TEXTURE_COMPARE_FUNC;
  using gl::GL_TEXTURE_COMPARE_MODE;
  using gl::GL_TEXTURE_COMPRESSED;
  using gl::GL_TEXTURE_COMPRESSED_IMAGE_SIZE;
  using gl::GL_TEXTURE_COMPRESSION_HINT;
  using gl::GL_TEXTURE_CUBE_MAP;
  using gl::GL_TEXTURE_CUBE_MAP_ARRAY;
  using gl::GL_TEXTURE_CUBE_MAP_NEGATIVE_X;
  using gl::GL_TEXTURE_CUBE_MAP_NEGATIVE_Y;
  using gl::GL_TEXTURE_CUBE_MAP_NEGATIVE_Z;
  using gl::GL_TEXTURE_CUBE_MAP_POSITIVE_X;
  using gl::GL_TEXTURE_CUBE_MAP_POSITIVE_Y;
  using gl::GL_TEXTURE_CUBE_MAP_POSITIVE_Z;
  using gl::GL_TEXTURE_CUBE_MAP_SEAMLESS;
  using gl::GL_TEXTURE_DEPTH;
  using gl::GL_TEXTURE_DEPTH_SIZE;
  using gl::GL_TEXTURE_DEPTH_TYPE;
  using gl::GL_TEXTURE_FIXED_SAMPLE_LOCATIONS;
  using gl::GL_TEXTURE_GREEN_SIZE;
  using gl::GL_TEXTURE_GREEN_TYPE;
  using gl::GL_TEXTURE_HEIGHT;
  using gl::GL_TEXTURE_INTERNAL_FORMAT;
  using gl::GL_TEXTURE_LOD_BIAS;
  using gl::GL_TEXTURE_MAG_FILTER;
  using gl::GL_TEXTURE_MAX_LEVEL;
  using gl::GL_TEXTURE_MAX_LOD;
  using gl::GL_TEXTURE_MIN_FILTER;
  using gl::GL_TEXTURE_MIN_LOD;
  using gl::GL_TEXTURE_RECTANGLE;
  using gl::GL_TEXTURE_RED_SIZE;
  using gl::GL_TEXTURE_RED_TYPE;
  using gl::GL_TEXTURE_SAMPLES;
  using gl::GL_TEXTURE_SHARED_SIZE;
  using gl::GL_TEXTURE_STENCIL_SIZE;
  using gl::GL_TEXTURE_SWIZZLE_A;
  using gl::GL_TEXTURE_SWIZZLE_B;
  using gl::GL_TEXTURE_SWIZZLE_G;
  using gl::GL_TEXTURE_SWIZZLE_R;
  using gl::GL_TEXTURE_SWIZZLE_RGBA;
  using gl::GL_TEXTURE_WIDTH;
  using gl::GL_TEXTURE_WRAP_R;
  using gl::GL_TEXTURE_WRAP_S;
  using gl::GL_TEXTURE_WRAP_T;
  using gl::GL_TIME_ELAPSED;
  using gl::GL_TIMEOUT_EXPIRED;
  using gl::GL_TIMESTAMP;
  using gl::GL_TRANSFORM_FEEDBACK;
  using gl::GL_TRANSFORM_FEEDBACK_BINDING;
  using gl::GL_TRANSFORM_FEEDBACK_BUFFER;
  using gl::GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE;
  using gl::GL_TRANSFORM_FEEDBACK_BUFFER_BINDING;
  using gl::GL_TRANSFORM_FEEDBACK_BUFFER_MODE;
  using gl::GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED;
  using gl::GL_TRANSFORM_FEEDBACK_BUFFER_SIZE;
  using gl::GL_TRANSFORM_FEEDBACK_BUFFER_START;
  using gl::GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN;
  using gl::GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH;
  using gl::GL_TRANSFORM_FEEDBACK_VARYINGS;
  using gl::GL_TRIANGLE_FAN;
  using gl::GL_TRIANGLE_STRIP;
  using gl::GL_TRIANGLE_STRIP_ADJACENCY;
  using gl::GL_TRIANGLES;
  using gl::GL_TRIANGLES_ADJACENCY;
  using gl::GL_UNDEFINED_VERTEX;
  using gl::GL_UNIFORM_ARRAY_STRIDE;
  using gl::GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES;
  using gl::GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS;
  using gl::GL_UNIFORM_BLOCK_BINDING;
  using gl::GL_UNIFORM_BLOCK_DATA_SIZE;
  using gl::GL_UNIFORM_BLOCK_INDEX;
  using gl::GL_UNIFORM_BLOCK_NAME_LENGTH;
  using gl::GL_UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER;
  using gl::GL_UNIFORM_BLOCK_REFERENCED_BY_GEOMETRY_SHADER;
  using gl::GL_UNIFORM_BLOCK_REFERENCED_BY_TESS_CONTROL_SHADER;
  using gl::GL_UNIFORM_BLOCK_REFERENCED_BY_TESS_EVALUATION_SHADER;
  using gl::GL_UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER;
  using gl::GL_UNIFORM_BUFFER;
  using gl::GL_UNIFORM_BUFFER_BINDING;
  using gl::GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT;
  using gl::GL_UNIFORM_BUFFER_SIZE;
  using gl::GL_UNIFORM_BUFFER_START;
  using gl::GL_UNIFORM_IS_ROW_MAJOR;
  using gl::GL_UNIFORM_MATRIX_STRIDE;
  using gl::GL_UNIFORM_NAME_LENGTH;
  using gl::GL_UNIFORM_OFFSET;
  using gl::GL_UNIFORM_SIZE;
  using gl::GL_UNIFORM_TYPE;
  using gl::GL_UNPACK_ALIGNMENT;
  using gl::GL_UNPACK_IMAGE_HEIGHT;
  using gl::GL_UNPACK_LSB_FIRST;
  using gl::GL_UNPACK_ROW_LENGTH;
  using gl::GL_UNPACK_SKIP_IMAGES;
  using gl::GL_UNPACK_SKIP_PIXELS;
  using gl::GL_UNPACK_SKIP_ROWS;
  using gl::GL_UNPACK_SWAP_BYTES;
  using gl::GL_UNSIGNALED;
  using gl::GL_UNSIGNED_BYTE;
  using gl::GL_UNSIGNED_BYTE_2_3_3_REV;
  using gl::GL_UNSIGNED_BYTE_3_3_2;
  using gl::GL_UNSIGNED_INT;
  using gl::GL_UNSIGNED_INT_10_10_10_2;
  using gl::GL_UNSIGNED_INT_10F_11F_11F_REV;
  using gl::GL_UNSIGNED_INT_24_8;
  using gl::GL_UNSIGNED_INT_2_10_10_10_REV;
  using gl::GL_UNSIGNED_INT_5_9_9_9_REV;
  using gl::GL_UNSIGNED_INT_8_8_8_8;
  using gl::GL_UNSIGNED_INT_8_8_8_8_REV;
  using gl::GL_UNSIGNED_INT_SAMPLER_1D;
  using gl::GL_UNSIGNED_INT_SAMPLER_1D_ARRAY;
  using gl::GL_UNSIGNED_INT_SAMPLER_2D;
  using gl::GL_UNSIGNED_INT_SAMPLER_2D_ARRAY;
  using gl::GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE;
  using gl::GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY;
  using gl::GL_UNSIGNED_INT_SAMPLER_2D_RECT;
  using gl::GL_UNSIGNED_INT_SAMPLER_3D;
  using gl::GL_UNSIGNED_INT_SAMPLER_BUFFER;
  using gl::GL_UNSIGNED_INT_SAMPLER_CUBE;
  using gl::GL_UNSIGNED_INT_SAMPLER_CUBE_MAP_ARRAY;
  using gl::GL_UNSIGNED_INT_VEC2;
  using gl::GL_UNSIGNED_INT_VEC3;
  using gl::GL_UNSIGNED_INT_VEC4;
  using gl::GL_UNSIGNED_NORMALIZED;
  using gl::GL_UNSIGNED_SHORT;
  using gl::GL_UNSIGNED_SHORT_1_5_5_5_REV;
  using gl::GL_UNSIGNED_SHORT_4_4_4_4;
  using gl::GL_UNSIGNED_SHORT_4_4_4_4_REV;
  using gl::GL_UNSIGNED_SHORT_5_5_5_1;
  using gl::GL_UNSIGNED_SHORT_5_6_5;
  using gl::GL_UNSIGNED_SHORT_5_6_5_REV;
  using gl::GL_UPPER_LEFT;
  using gl::GL_VALIDATE_STATUS;
  using gl::GL_VENDOR;
  using gl::GL_VERSION;
  using gl::GL_VERTEX_ARRAY_BINDING;
  using gl::GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING;
  using gl::GL_VERTEX_ATTRIB_ARRAY_DIVISOR;
  using gl::GL_VERTEX_ATTRIB_ARRAY_ENABLED;
  using gl::GL_VERTEX_ATTRIB_ARRAY_INTEGER;
  using gl::GL_VERTEX_ATTRIB_ARRAY_NORMALIZED;
  using gl::GL_VERTEX_ATTRIB_ARRAY_POINTER;
  using gl::GL_VERTEX_ATTRIB_ARRAY_SIZE;
  using gl::GL_VERTEX_ATTRIB_ARRAY_STRIDE;
  using gl::GL_VERTEX_ATTRIB_ARRAY_TYPE;
  using gl::GL_VERTEX_PROGRAM_POINT_SIZE;
  using gl::GL_VERTEX_SHADER;
  using gl::GL_VIEWPORT;
  using gl::GL_VIEWPORT_BOUNDS_RANGE;
  using gl::GL_VIEWPORT_INDEX_PROVOKING_VERTEX;
  using gl::GL_VIEWPORT_SUBPIXEL_BITS;
  using gl::GL_WAIT_FAILED;
  using gl::GL_WRITE_ONLY;
  using gl::GL_XOR;
  using gl::GL_ZERO;
  
  
  } // namespace gl41