#define GL_RGB5_EXT                       0x8050
#define GL_RGB8_EXT                       0x8051
#define GL_RGB10_EXT                      0x8052
#define GL_RGB12_EXT                      0x8053
#define GL_RGB16_EXT                      0x8054
#define GL_RGBA2_EXT                      0x8055
#define GL_RGBA4_EXT                      0x8056
#define GL_RGB5_A1_EXT                    0x8057
#define GL_RGBA8_EXT                      0x8058
#define GL_RGB10_A2_EXT                   0x8059
#define GL_RGBA12_EXT                     0x805A
#define GL_RGBA16_EXT                     0x805B
#define GL_TEXTURE_RED_SIZE_EXT           0x805C
#define GL_TEXTURE_GREEN_SIZE_EXT         0x805D
#define GL_TEXTURE_BLUE_SIZE_EXT          0x805E
#define GL_TEXTURE_ALPHA_SIZE_EXT         0x805F
#define GL_TEXTURE_LUMINANCE_SIZE_EXT     0x8060
#define GL_TEXTURE_INTENSITY_SIZE_EXT     0x8061
#define GL_REPLACE_EXT                    0x8062
#define GL_PROXY_TEXTURE_1D_EXT           0x8063
#define GL_PROXY_TEXTURE_2D_EXT           0x8064
#define GL_TEXTURE_TOO_LARGE_EXT          0x8065
#endif

#ifndef GL_EXT_texture3D
#define GL_PACK_SKIP_IMAGES               0x806B
#define GL_PACK_SKIP_IMAGES_EXT           0x806B
#define GL_PACK_IMAGE_HEIGHT              0x806C
#define GL_PACK_IMAGE_HEIGHT_EXT          0x806C
#define GL_UNPACK_SKIP_IMAGES             0x806D
#define GL_UNPACK_SKIP_IMAGES_EXT         0x806D
#define GL_UNPACK_IMAGE_HEIGHT            0x806E
#define GL_UNPACK_IMAGE_HEIGHT_EXT        0x806E
#define GL_TEXTURE_3D                     0x806F
#define GL_TEXTURE_3D_EXT                 0x806F
#define GL_PROXY_TEXTURE_3D               0x8070
#define GL_PROXY_TEXTURE_3D_EXT           0x8070
#define GL_TEXTURE_DEPTH                  0x8071
#define GL_TEXTURE_DEPTH_EXT              0x8071
#define GL_TEXTURE_WRAP_R                 0x8072
#define GL_TEXTURE_WRAP_R_EXT             0x8072
#define GL_MAX_3D_TEXTURE_SIZE            0x8073
#define GL_MAX_3D_TEXTURE_SIZE_EXT        0x8073
#endif

#ifndef GL_SGIS_texture_filter4
#define GL_FILTER4_SGIS                   0x8146
#define GL_TEXTURE_FILTER4_SIZE_SGIS      0x8147
#endif

#ifndef GL_EXT_subtexture
#endif

#ifndef GL_EXT_copy_texture
#endif

#ifndef GL_EXT_histogram
#define GL_HISTOGRAM_EXT                  0x8024
#define GL_PROXY_HISTOGRAM_EXT            0x8025
#define GL_HISTOGRAM_WIDTH_EXT            0x8026
#define GL_HISTOGRAM_FORMAT_EXT           0x8027
#define GL_HISTOGRAM_RED_SIZE_EXT         0x8028
#define GL_HISTOGRAM_GREEN_SIZE_EXT       0x8029
#define GL_HISTOGRAM_BLUE_SIZE_EXT        0x802A
#define GL_HISTOGRAM_ALPHA_SIZE_EXT       0x802B
#define GL_HISTOGRAM_LUMINANCE_SIZE_EXT   0x802C
#define GL_HISTOGRAM_SINK_EXT             0x802D
#define GL_MINMAX_EXT                     0x802E
#define GL_MINMAX_FORMAT_EXT              0x802F
#define GL_MINMAX_SINK_EXT                0x8030
#define GL_TABLE_TOO_LARGE_EXT            0x8031
#endif

#ifndef GL_EXT_convolution
#define GL_CONVOLUTION_1D_EXT             0x8010
#define GL_CONVOLUTION_2D_EXT             0x8011
#define GL_SEPARABLE_2D_EXT               0x8012
#define GL_CONVOLUTION_BORDER_MODE_EXT    0x8013
#define GL_CONVOLUTION_FILTER_SCALE_EXT   0x8014
#define GL_CONVOLUTION_FILTER_BIAS_EXT    0x8015
#define GL_REDUCE_EXT                     0x8016
#define GL_CONVOLUTION_FORMAT_EXT         0x8017
#define GL_CONVOLUTION_WIDTH_EXT          0x8018
#define GL_CONVOLUTION_HEIGHT_EXT         0x8019
#define GL_MAX_CONVOLUTION_WIDTH_EXT      0x801A
#define GL_MAX_CONVOLUTION_HEIGHT_EXT     0x801B
#define GL_POST_CONVOLUTION_RED_SCALE_EXT 0x801C
#define GL_POST_CONVOLUTION_GREEN_SCALE_EXT 0x801D
#define GL_POST_CONVOLUTION_BLUE_SCALE_EXT 0x801E
#define GL_POST_CONVOLUTION_ALPHA_SCALE_EXT 0x801F
#define GL_POST_CONVOLUTION_RED_BIAS_EXT  0x8020
#define GL_POST_CONVOLUTION_GREEN_BIAS_EXT 0x8021
#define GL_POST_CONVOLUTION_BLUE_BIAS_EXT 0x8022
#define GL_POST_CONVOLUTION_ALPHA_BIAS_EXT 0x8023
#endif

#ifndef GL_SGI_color_matrix
#define GL_COLOR_MATRIX_SGI               0x80B1
#define GL_COLOR_MATRIX_STACK_DEPTH_SGI   0x80B2
#define GL_MAX_COLOR_MATRIX_STACK_DEPTH_SGI 0x80B3
#define GL_POST_COLOR_MATRIX_RED_SCALE_SGI 0x80B4
#define GL_POST_COLOR_MATRIX_GREEN_SCALE_SGI 0x80B5
#define GL_POST_COLOR_MATRIX_BLUE_SCALE_SGI 0x80B6
#define GL_POST_COLOR_MATRIX_ALPHA_SCALE_SGI 0x80B7
#define GL_POST_COLOR_MATRIX_RED_BIAS_SGI 0x80B8
#define GL_POST_COLOR_MATRIX_GREEN_BIAS_SGI 0x80B9
#define GL_POST_COLOR_MATRIX_BLUE_BIAS_SGI 0x80BA
#define GL_POST_COLOR_MATRIX_ALPHA_BIAS_SGI 0x80BB
#endif

#ifndef GL_SGI_color_table
#define GL_COLOR_TABLE_SGI                0x80D0
#define GL_POST_CONVOLUTION_COLOR_TABLE_SGI 0x80D1
#define GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI 0x80D2
#define GL_PROXY_COLOR_TABLE_SGI          0x80D3
#define GL_PROXY_POST_CONVOLUTION_COLOR_TABLE_SGI 0x80D4
#define GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE_SGI 0x80D5
#define GL_COLOR_TABLE_SCALE_SGI          0x80D6
#define GL_COLOR_TABLE_BIAS_SGI           0x80D7
#define GL_COLOR_TABLE_FORMAT_SGI         0x80D8
#define GL_COLOR_TABLE_WIDTH_SGI          0x80D9
#define GL_COLOR_TABLE_RED_SIZE_SGI       0x80DA
#define GL_COLOR_TABLE_GREEN_SIZE_SGI     0x80DB
#define GL_COLOR_TABLE_BLUE_SIZE_SGI      0x80DC
#define GL_COLOR_TABLE_ALPHA_SIZE_SGI     0x80DD
#define GL_COLOR_TABLE_LUMINANCE_SIZE_SGI 0x80DE
#define GL_COLOR_TABLE_INTENSITY_SIZE_SGI 0x80DF
#endif

#ifndef GL_SGIS_pixel_texture
#define GL_PIXEL_TEXTURE_SGIS             0x8353
#define GL_PIXEL_FRAGMENT_RGB_SOURCE_SGIS 0x8354
#define GL_PIXEL_FRAGMENT_ALPHA_SOURCE_SGIS 0x8355
#define GL_PIXEL_GROUP_COLOR_SGIS         0x8356
#endif

#ifndef GL_SGIX_pixel_texture
#define GL_PIXEL_TEX_GEN_SGIX             0x8139
#define GL_PIXEL_TEX_GEN_MODE_SGIX        0x832B
#endif

#ifndef GL_SGIS_texture4D
#define GL_PACK_SKIP_VOLUMES_SGIS         0x8130
#define GL_PACK_IMAGE_DEPTH_SGIS          0x8131
#define GL_UNPACK_SKIP_VOLUMES_SGIS       0x8132
#define GL_UNPACK_IMAGE_DEPTH_SGIS        0x8133
#define GL_TEXTURE_4D_SGIS                0x8134
#define GL_PROXY_TEXTURE_4D_SGIS          0x8135
#define GL_TEXTURE_4DSIZE_SGIS            0x8136
#define GL_TEXTURE_WRAP_Q_SGIS            0x8137
#define GL_MAX_4D_TEXTURE_SIZE_SGIS       0x8138
#define GL_TEXTURE_4D_BINDING_SGIS        0x814F
#endif

#ifndef GL_SGI_texture_color_table
#define GL_TEXTURE_COLOR_TABLE_SGI        0x80BC
#define GL_PROXY_TEXTURE_COLOR_TABLE_SGI  0x80BD
#endif

#ifndef GL_EXT_cmyka
#define GL_CMYK_EXT                       0x800C
#define GL_CMYKA_EXT                      0x800D
#define GL_PACK_CMYK_HINT_EXT             0x800E
#define GL_UNPACK_CMYK_HINT_EXT           0x800F
#endif

#ifndef GL_EXT_texture_object
#define GL_TEXTURE_PRIORITY_EXT           0x8066
#define GL_TEXTURE_RESIDENT_EXT           0x8067
#define GL_TEXTURE_1D_BINDING_EXT         0x8068
#define GL_TEXTURE_2D_BINDING_EXT         0x8069
#define GL_TEXTURE_3D_BINDING_EXT         0x806A
#endif

#ifndef GL_SGIS_detail_texture
#define GL_DETAIL_TEXTURE_2D_SGIS         0x8095
#define GL_DETAIL_TEXTURE_2D_BINDING_SGIS 0x8096
#define GL_LINEAR_DETAIL_SGIS             0x8097
#define GL_LINEAR_DETAIL_ALPHA_SGIS       0x8098
#define GL_LINEAR_DETAIL_COLOR_SGIS       0x8099
#define GL_DETAIL_TEXTURE_LEVEL_SGIS      0x809A
#define GL_DETAIL_TEXTURE_MODE_SGIS       0x809B
#define GL_DETAIL_TEXTURE_FUNC_POINTS_SGIS 0x809C
#endif

#ifndef GL_SGIS_sharpen_texture
#define GL_LINEAR_SHARPEN_SGIS            0x80AD
#define GL_LINEAR_SHARPEN_ALPHA_SGIS      0x80AE
#define GL_LINEAR_SHARPEN_COLOR_SGIS      0x80AF
#define GL_SHARPEN_TEXTURE_FUNC_POINTS_SGIS 0x80B0
#endif

#ifndef GL_EXT_packed_pixels
#define GL_UNSIGNED_BYTE_3_3_2_EXT        0x8032
#define GL_UNSIGNED_SHORT_4_4_4_4_EXT     0x8033
#define GL_UNSIGNED_SHORT_5_5_5_1_EXT     0x8034
#define GL_UNSIGNED_INT_8_8_8_8_EXT       0x8035
#define GL_UNSIGNED_INT_10_10_10_2_EXT    0x8036
#endif

#ifndef GL_SGIS_texture_lod
#define GL_TEXTURE_MIN_LOD_SGIS           0x813A
#define GL_TEXTURE_MAX_LOD_SGIS           0x813B
#define GL_TEXTURE_BASE_LEVEL_SGIS        0x813C
#define GL_TEXTURE_MAX_LEVEL_SGIS         0x813D
#endif

#ifndef GL_SGIS_multisample
#define GL_MULTISAMPLE_SGIS               0x809D
#define GL_SAMPLE_ALPHA_TO_MASK_SGIS      0x809E
#define GL_SAMPLE_ALPHA_TO_ONE_SGIS       0x809F
#define GL_SAMPLE_MASK_SGIS               0x80A0
#define GL_1PASS_SGIS                     0x80A1
#define GL_2PASS_0_SGIS                   0x80A2
#define GL_2PASS_1_SGIS                   0x80A3
#define GL_4PASS_0_SGIS                   0x80A4
#define GL_4PASS_1_SGIS                   0x80A5
#define GL_4PASS_2_SGIS                   0x80A6
#define GL_4PASS_3_SGIS                   0x80A7
#define GL_SAMPLE_BUFFERS_SGIS            0x80A8
#define GL_SAMPLES_SGIS                   0x80A9
#define GL_SAMPLE_MASK_VALUE_SGIS         0x80AA
#define GL_SAMPLE_MASK_INVERT_SGIS        0x80AB
#define GL_SAMPLE_PATTERN_SGIS            0x80AC
#endif

#ifndef GL_EXT_rescale_normal
#define GL_RESCALE_NORMAL_EXT             0x803A
#endif

#ifndef GL_EXT_vertex_array
#define GL_VERTEX_ARRAY_EXT               0x8074
#define GL_NORMAL_ARRAY_EXT               0x8075
#define GL_COLOR_ARRAY_EXT                0x8076
#define GL_INDEX_ARRAY_EXT                0x8077
#define GL_TEXTURE_COORD_ARRAY_EXT        0x8078
#define GL_EDGE_FLAG_ARRAY_EXT            0x8079
#define GL_VERTEX_ARRAY_SIZE_EXT          0x807A
#define GL_VERTEX_ARRAY_TYPE_EXT          0x807B
#define GL_VERTEX_ARRAY_STRIDE_EXT        0x807C
#define GL_VERTEX_ARRAY_COUNT_EXT         0x807D
#define GL_NORMAL_ARRAY_TYPE_EXT          0x807E
#define GL_NORMAL_ARRAY_STRIDE_EXT        0x807F
#define GL_NORMAL_ARRAY_COUNT_EXT         0x8080
#define GL_COLOR_ARRAY_SIZE_EXT           0x8081
#define GL_COLOR_ARRAY_TYPE_EXT           0x8082
#define GL_COLOR_ARRAY_STRIDE_EXT         0x8083
#define GL_COLOR_ARRAY_COUNT_EXT          0x8084
#define GL_INDEX_ARRAY_TYPE_EXT           0x8085
#define GL_INDEX_ARRAY_STRIDE_EXT         0x8086
#define GL_INDEX_ARRAY_COUNT_EXT          0x8087
#define GL_TEXTURE_COORD_ARRAY_SIZE_EXT   0x8088
#define GL_TEXTURE_COORD_ARRAY_TYPE_EXT   0x8089
#define GL_TEXTURE_COORD_ARRAY_STRIDE_EXT 0x808A
#define GL_TEXTURE_COORD_ARRAY_COUNT_EXT  0x808B
#define GL_EDGE_FLAG_ARRAY_STRIDE_EXT     0x808C
#define GL_EDGE_FLAG_ARRAY_COUNT_EXT      0x808D
#define GL_VERTEX_ARRAY_POINTER_EXT       0x808E
#define GL_NORMAL_ARRAY_POINTER_EXT       0x808F
#define GL_COLOR_ARRAY_POINTER_EXT        0x8090
#define GL_INDEX_ARRAY_POINTER_EXT        0x8091
#define GL_TEXTURE_COORD_ARRAY_POINTER_EXT 0x8092
#define GL_EDGE_FLAG_ARRAY_POINTER_EXT    0x8093
#endif

#ifndef GL_EXT_misc_attribute
#endif

#ifndef GL_SGIS_generate_mipmap
#define GL_GENERATE_MIPMAP_SGIS           0x8191
#define GL_GENERATE_MIPMAP_HINT_SGIS      0x8192
#endif

#ifndef GL_SGIX_clipmap
#define GL_LINEAR_CLIPMAP_LINEAR_SGIX     0x8170
#define GL_TEXTURE_CLIPMAP_CENTER_SGIX    0x8171
#define GL_TEXTURE_CLIPMAP_FRAME_SGIX     0x8172
#define GL_TEXTURE_CLIPMAP_OFFSET_SGIX    0x8173
#define GL_TEXTURE_CLIPMAP_VIRTUAL_DEPTH_SGIX 0x8174
#define GL_TEXTURE_CLIPMAP_LOD_OFFSET_SGIX 0x8175
#define GL_TEXTURE_CLIPMAP_DEPTH_SGIX     0x8176
#define GL_MAX_CLIPMAP_DEPTH_SGIX         0x8177
#define GL_MAX_CLIPMAP_VIRTUAL_DEPTH_SGIX 0x8178
#define GL_NEAREST_CLIPMAP_NEAREST_SGIX   0x844D
#define GL_NEAREST_CLIPMAP_LINEAR_SGIX    0x844E
#define GL_LINEAR_CLIPMAP_NEAREST_SGIX    0x844F
#endif

#ifndef GL_SGIX_shadow
#define GL_TEXTURE_COMPARE_SGIX           0x819A
#define GL_TEXTURE_COMPARE_OPERATOR_SGIX  0x819B
#define GL_TEXTURE_LEQUAL_R_SGIX          0x819C
#define GL_TEXTURE_GEQUAL_R_SGIX          0x819D
#endif

#ifndef GL_SGIS_texture_edge_clamp
#define GL_CLAMP_TO_EDGE_SGIS             0x812F
#endif

#ifndef GL_SGIS_texture_border_clamp
#define GL_CLAMP_TO_BORDER_SGIS           0x812D
#endif

#ifndef GL_EXT_blend_minmax
#define GL_FUNC_ADD_EXT                   0x8006
#define GL_MIN_EXT                        0x8007
#define GL_MAX_EXT                        0x8008
#define GL_BLEND_EQUATION_EXT             0x8009
#endif

#ifndef GL_EXT_blend_subtract
#define GL_FUNC_SUBTRACT_EXT              0x800A
#define GL_FUNC_REVERSE_SUBTRACT_EXT      0x800B
#endif

#ifndef GL_EXT_blend_logic_op