1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
use crate::webgl::webgl_common::*;

impl WebGLRenderingContext
{
    pub const ACTIVE_ATTRIBUTES: GLenum = 35721;
    pub const ACTIVE_TEXTURE: GLenum = 34016;
    pub const ACTIVE_UNIFORMS: GLenum = 35718;
    pub const ACTIVE_UNIFORM_BLOCKS: GLenum = 35382;
    pub const ALIASED_LINE_WIDTH_RANGE: GLenum = 33902;
    pub const ALIASED_POINT_SIZE_RANGE: GLenum = 33901;
    pub const ALPHA: GLenum = 6406;
    pub const ALPHA_BITS: GLenum = 3413;
    pub const ALREADY_SIGNALED: GLenum = 37146;
    pub const ALWAYS: GLenum = 519;
    pub const ANY_SAMPLES_PASSED: GLenum = 35887;
    pub const ANY_SAMPLES_PASSED_CONSERVATIVE: GLenum = 36202;
    pub const ARRAY_BUFFER: GLenum = 34962;
    pub const ARRAY_BUFFER_BINDING: GLenum = 34964;
    pub const ATTACHED_SHADERS: GLenum = 35717;
    pub const BACK: GLenum = 1029;
    pub const BLEND: GLenum = 3042;
    pub const BLEND_COLOR: GLenum = 32773;
    pub const BLEND_DST_ALPHA: GLenum = 32970;
    pub const BLEND_DST_RGB: GLenum = 32968;
    pub const BLEND_EQUATION: GLenum = 32777;
    pub const BLEND_EQUATION_ALPHA: GLenum = 34877;
    pub const BLEND_EQUATION_RGB: GLenum = 32777;
    pub const BLEND_SRC_ALPHA: GLenum = 32971;
    pub const BLEND_SRC_RGB: GLenum = 32969;
    pub const BLUE_BITS: GLenum = 3412;
    pub const BOOL: GLenum = 35670;
    pub const BOOL_VEC2: GLenum = 35671;
    pub const BOOL_VEC3: GLenum = 35672;
    pub const BOOL_VEC4: GLenum = 35673;
    pub const BROWSER_DEFAULT_WEBGL: GLenum = 37444;
    pub const BUFFER_SIZE: GLenum = 34660;
    pub const BUFFER_USAGE: GLenum = 34661;
    pub const BYTE: GLenum = 5120;
    pub const CCW: GLenum = 2305;
    pub const CLAMP_TO_EDGE: GLenum = 33071;
    pub const COLOR: GLenum = 6144;
    pub const COLOR_ATTACHMENT0: GLenum = 36064;
    pub const COLOR_ATTACHMENT1: GLenum = 36065;
    pub const COLOR_ATTACHMENT10: GLenum = 36074;
    pub const COLOR_ATTACHMENT11: GLenum = 36075;
    pub const COLOR_ATTACHMENT12: GLenum = 36076;
    pub const COLOR_ATTACHMENT13: GLenum = 36077;
    pub const COLOR_ATTACHMENT14: GLenum = 36078;
    pub const COLOR_ATTACHMENT15: GLenum = 36079;
    pub const COLOR_ATTACHMENT2: GLenum = 36066;
    pub const COLOR_ATTACHMENT3: GLenum = 36067;
    pub const COLOR_ATTACHMENT4: GLenum = 36068;
    pub const COLOR_ATTACHMENT5: GLenum = 36069;
    pub const COLOR_ATTACHMENT6: GLenum = 36070;
    pub const COLOR_ATTACHMENT7: GLenum = 36071;
    pub const COLOR_ATTACHMENT8: GLenum = 36072;
    pub const COLOR_ATTACHMENT9: GLenum = 36073;
    pub const COLOR_BUFFER_BIT: GLenum = 16384;
    pub const COLOR_CLEAR_VALUE: GLenum = 3106;
    pub const COLOR_WRITEMASK: GLenum = 3107;
    pub const COMPARE_REF_TO_TEXTURE: GLenum = 34894;
    pub const COMPILE_STATUS: GLenum = 35713;
    pub const COMPRESSED_TEXTURE_FORMATS: GLenum = 34467;
    pub const CONDITION_SATISFIED: GLenum = 37148;
    pub const CONSTANT_ALPHA: GLenum = 32771;
    pub const CONSTANT_COLOR: GLenum = 32769;
    pub const CONTEXT_LOST_WEBGL: GLenum = 37442;
    pub const COPY_READ_BUFFER: GLenum = 36662;
    pub const COPY_READ_BUFFER_BINDING: GLenum = 36662;
    pub const COPY_WRITE_BUFFER: GLenum = 36663;
    pub const COPY_WRITE_BUFFER_BINDING: GLenum = 36663;
    pub const CULL_FACE: GLenum = 2884;
    pub const CULL_FACE_MODE: GLenum = 2885;
    pub const CURRENT_PROGRAM: GLenum = 35725;
    pub const CURRENT_QUERY: GLenum = 34917;
    pub const CURRENT_VERTEX_ATTRIB: GLenum = 34342;
    pub const CW: GLenum = 2304;
    pub const DECR: GLenum = 7683;
    pub const DECR_WRAP: GLenum = 34056;
    pub const DELETE_STATUS: GLenum = 35712;
    pub const DEPTH: GLenum = 6145;
    pub const DEPTH24_STENCIL8: GLenum = 35056;
    pub const DEPTH32F_STENCIL8: GLenum = 36013;
    pub const DEPTH_ATTACHMENT: GLenum = 36096;
    pub const DEPTH_BITS: GLenum = 3414;
    pub const DEPTH_BUFFER_BIT: GLenum = 256;
    pub const DEPTH_CLEAR_VALUE: GLenum = 2931;
    pub const DEPTH_COMPONENT: GLenum = 6402;
    pub const DEPTH_COMPONENT16: GLenum = 33189;
    pub const DEPTH_COMPONENT24: GLenum = 33190;
    pub const DEPTH_COMPONENT32F: GLenum = 36012;
    pub const DEPTH_FUNC: GLenum = 2932;
    pub const DEPTH_RANGE: GLenum = 2928;
    pub const DEPTH_STENCIL: GLenum = 34041;
    pub const DEPTH_STENCIL_ATTACHMENT: GLenum = 33306;
    pub const DEPTH_TEST: GLenum = 2929;
    pub const DEPTH_WRITEMASK: GLenum = 2930;
    pub const DITHER: GLenum = 3024;
    pub const DONT_CARE: GLenum = 4352;
    pub const DRAW_BUFFER0: GLenum = 34853;
    pub const DRAW_BUFFER1: GLenum = 34854;
    pub const DRAW_BUFFER10: GLenum = 34863;
    pub const DRAW_BUFFER11: GLenum = 34864;
    pub const DRAW_BUFFER12: GLenum = 34865;
    pub const DRAW_BUFFER13: GLenum = 34866;
    pub const DRAW_BUFFER14: GLenum = 34867;
    pub const DRAW_BUFFER15: GLenum = 34868;
    pub const DRAW_BUFFER2: GLenum = 34855;
    pub const DRAW_BUFFER3: GLenum = 34856;
    pub const DRAW_BUFFER4: GLenum = 34857;
    pub const DRAW_BUFFER5: GLenum = 34858;
    pub const DRAW_BUFFER6: GLenum = 34859;
    pub const DRAW_BUFFER7: GLenum = 34860;
    pub const DRAW_BUFFER8: GLenum = 34861;
    pub const DRAW_BUFFER9: GLenum = 34862;
    pub const DRAW_FRAMEBUFFER: GLenum = 36009;
    pub const DRAW_FRAMEBUFFER_BINDING: GLenum = 36006;
    pub const DST_ALPHA: GLenum = 772;
    pub const DST_COLOR: GLenum = 774;
    pub const DYNAMIC_COPY: GLenum = 35050;
    pub const DYNAMIC_DRAW: GLenum = 35048;
    pub const DYNAMIC_READ: GLenum = 35049;
    pub const ELEMENT_ARRAY_BUFFER: GLenum = 34963;
    pub const ELEMENT_ARRAY_BUFFER_BINDING: GLenum = 34965;
    pub const EQUAL: GLenum = 514;
    pub const FASTEST: GLenum = 4353;
    pub const FLOAT: GLenum = 5126;
    pub const FLOAT_32_UNSIGNED_INT_24_8_REV: GLenum = 36269;
    pub const FLOAT_MAT2: GLenum = 35674;
    pub const FLOAT_MAT2X3: GLenum = 35685;
    pub const FLOAT_MAT2X4: GLenum = 35686;
    pub const FLOAT_MAT3: GLenum = 35675;
    pub const FLOAT_MAT3X2: GLenum = 35687;
    pub const FLOAT_MAT3X4: GLenum = 35688;
    pub const FLOAT_MAT4: GLenum = 35676;
    pub const FLOAT_MAT4X2: GLenum = 35689;
    pub const FLOAT_MAT4X3: GLenum = 35690;
    pub const FLOAT_VEC2: GLenum = 35664;
    pub const FLOAT_VEC3: GLenum = 35665;
    pub const FLOAT_VEC4: GLenum = 35666;
    pub const FRAGMENT_SHADER: GLenum = 35632;
    pub const FRAGMENT_SHADER_DERIVATIVE_HINT: GLenum = 35723;
    pub const FRAMEBUFFER: GLenum = 36160;
    pub const FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: GLenum = 33301;
    pub const FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: GLenum = 33300;
    pub const FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING: GLenum = 33296;
    pub const FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE: GLenum = 33297;
    pub const FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: GLenum = 33302;
    pub const FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: GLenum = 33299;
    pub const FRAMEBUFFER_ATTACHMENT_OBJECT_NAME: GLenum = 36049;
    pub const FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE: GLenum = 36048;
    pub const FRAMEBUFFER_ATTACHMENT_RED_SIZE: GLenum = 33298;
    pub const FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: GLenum = 33303;
    pub const FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE: GLenum = 36051;
    pub const FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER: GLenum = 36052;
    pub const FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL: GLenum = 36050;
    pub const FRAMEBUFFER_BINDING: GLenum = 36006;
    pub const FRAMEBUFFER_COMPLETE: GLenum = 36053;
    pub const FRAMEBUFFER_DEFAULT: GLenum = 33304;
    pub const FRAMEBUFFER_INCOMPLETE_ATTACHMENT: GLenum = 36054;
    pub const FRAMEBUFFER_INCOMPLETE_DIMENSIONS: GLenum = 36057;
    pub const FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: GLenum = 36055;
    pub const FRAMEBUFFER_INCOMPLETE_MULTISAMPLE: GLenum = 36182;
    pub const FRAMEBUFFER_UNSUPPORTED: GLenum = 36061;
    pub const FRONT: GLenum = 1028;
    pub const FRONT_AND_BACK: GLenum = 1032;
    pub const FRONT_FACE: GLenum = 2886;
    pub const FUNC_ADD: GLenum = 32774;
    pub const FUNC_REVERSE_SUBTRACT: GLenum = 32779;
    pub const FUNC_SUBTRACT: GLenum = 32778;
    pub const GENERATE_MIPMAP_HINT: GLenum = 33170;
    pub const GEQUAL: GLenum = 518;
    pub const GREATER: GLenum = 516;
    pub const GREEN_BITS: GLenum = 3411;
    pub const HALF_FLOAT: GLenum = 5131;
    pub const HIGH_FLOAT: GLenum = 36338;
    pub const HIGH_INT: GLenum = 36341;
    pub const IMPLEMENTATION_COLOR_READ_FORMAT: GLenum = 35739;
    pub const IMPLEMENTATION_COLOR_READ_TYPE: GLenum = 35738;
    pub const INCR: GLenum = 7682;
    pub const INCR_WRAP: GLenum = 34055;
    pub const INFO_LOG_LENGTH: GLenum = 35716;
    pub const INT: GLenum = 5124;
    pub const INTERLEAVED_ATTRIBS: GLenum = 35980;
    pub const INT_2_10_10_10_REV: GLenum = 36255;
    pub const INT_SAMPLER_2D: GLenum = 36298;
    pub const INT_SAMPLER_2D_ARRAY: GLenum = 36303;
    pub const INT_SAMPLER_3D: GLenum = 36299;
    pub const INT_SAMPLER_CUBE: GLenum = 36300;
    pub const INT_VEC2: GLenum = 35667;
    pub const INT_VEC3: GLenum = 35668;
    pub const INT_VEC4: GLenum = 35669;
    pub const INVALID_ENUM: GLenum = 1280;
    pub const INVALID_FRAMEBUFFER_OPERATION: GLenum = 1286;
    pub const INVALID_INDEX: GLenum = 4294967295;
    pub const INVALID_OPERATION: GLenum = 1282;
    pub const INVALID_VALUE: GLenum = 1281;
    pub const INVERT: GLenum = 5386;
    pub const KEEP: GLenum = 7680;
    pub const LEQUAL: GLenum = 515;
    pub const LESS: GLenum = 513;
    pub const LINEAR: GLenum = 9729;
    pub const LINEAR_MIPMAP_LINEAR: GLenum = 9987;
    pub const LINEAR_MIPMAP_NEAREST: GLenum = 9985;
    pub const LINES: GLenum = 1;
    pub const LINE_LOOP: GLenum = 2;
    pub const LINE_STRIP: GLenum = 3;
    pub const LINE_WIDTH: GLenum = 2849;
    pub const LINK_STATUS: GLenum = 35714;
    pub const LOW_FLOAT: GLenum = 36336;
    pub const LOW_INT: GLenum = 36339;
    pub const LUMINANCE: GLenum = 6409;
    pub const LUMINANCE_ALPHA: GLenum = 6410;
    pub const MAX: GLenum = 32776;
    pub const MAX_3D_TEXTURE_SIZE: GLenum = 32883;
    pub const MAX_ARRAY_TEXTURE_LAYERS: GLenum = 35071;
    pub const MAX_CLIENT_WAIT_TIMEOUT_WEBGL: GLenum = 37447;
    pub const MAX_COLOR_ATTACHMENTS: GLenum = 36063;
    pub const MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS: GLenum = 35379;
    pub const MAX_COMBINED_TEXTURE_IMAGE_UNITS: GLenum = 35661;
    pub const MAX_COMBINED_UNIFORM_BLOCKS: GLenum = 35374;
    pub const MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS: GLenum = 35377;
    pub const MAX_CUBE_MAP_TEXTURE_SIZE: GLenum = 34076;
    pub const MAX_DRAW_BUFFERS: GLenum = 34852;
    pub const MAX_ELEMENTS_INDICES: GLenum = 33001;
    pub const MAX_ELEMENTS_VERTICES: GLenum = 33000;
    pub const MAX_ELEMENT_INDEX: GLenum = 36203;
    pub const MAX_FRAGMENT_INPUT_COMPONENTS: GLenum = 37157;
    pub const MAX_FRAGMENT_UNIFORM_BLOCKS: GLenum = 35373;
    pub const MAX_FRAGMENT_UNIFORM_COMPONENTS: GLenum = 35657;
    pub const MAX_FRAGMENT_UNIFORM_VECTORS: GLenum = 36349;
    pub const MAX_PROGRAM_TEXEL_OFFSET: GLenum = 35077;
    pub const MAX_RENDERBUFFER_SIZE: GLenum = 34024;
    pub const MAX_SAMPLES: GLenum = 36183;
    pub const MAX_SERVER_WAIT_TIMEOUT: GLenum = 37137;
    pub const MAX_TEXTURE_IMAGE_UNITS: GLenum = 34930;
    pub const MAX_TEXTURE_LOD_BIAS: GLenum = 34045;
    pub const MAX_TEXTURE_SIZE: GLenum = 3379;
    pub const MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS: GLenum = 35978;
    pub const MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS: GLenum = 35979;
    pub const MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS: GLenum = 35968;
    pub const MAX_UNIFORM_BLOCK_SIZE: GLenum = 35376;
    pub const MAX_UNIFORM_BUFFER_BINDINGS: GLenum = 35375;
    pub const MAX_VARYING_COMPONENTS: GLenum = 35659;
    pub const MAX_VARYING_VECTORS: GLenum = 36348;
    pub const MAX_VERTEX_ATTRIBS: GLenum = 34921;
    pub const MAX_VERTEX_OUTPUT_COMPONENTS: GLenum = 37154;
    pub const MAX_VERTEX_TEXTURE_IMAGE_UNITS: GLenum = 35660;
    pub const MAX_VERTEX_UNIFORM_BLOCKS: GLenum = 35371;
    pub const MAX_VERTEX_UNIFORM_COMPONENTS: GLenum = 35658;
    pub const MAX_VERTEX_UNIFORM_VECTORS: GLenum = 36347;
    pub const MAX_VIEWPORT_DIMS: GLenum = 3386;
    pub const MEDIUM_FLOAT: GLenum = 36337;
    pub const MEDIUM_INT: GLenum = 36340;
    pub const MIN: GLenum = 32775;
    pub const MIN_PROGRAM_TEXEL_OFFSET: GLenum = 35076;
    pub const MIRRORED_REPEAT: GLenum = 33648;
    pub const NEAREST: GLenum = 9728;
    pub const NEAREST_MIPMAP_LINEAR: GLenum = 9986;
    pub const NEAREST_MIPMAP_NEAREST: GLenum = 9984;
    pub const NEVER: GLenum = 512;
    pub const NICEST: GLenum = 4354;
    pub const NONE: GLenum = 0;
    pub const NOTEQUAL: GLenum = 517;
    pub const NO_ERROR: GLenum = 0;
    pub const OBJECT_TYPE: GLenum = 37138;
    pub const ONE: GLenum = 1;
    pub const ONE_MINUS_CONSTANT_ALPHA: GLenum = 32772;
    pub const ONE_MINUS_CONSTANT_COLOR: GLenum = 32770;
    pub const ONE_MINUS_DST_ALPHA: GLenum = 773;
    pub const ONE_MINUS_DST_COLOR: GLenum = 775;
    pub const ONE_MINUS_SRC_ALPHA: GLenum = 771;
    pub const ONE_MINUS_SRC_COLOR: GLenum = 769;
    pub const OUT_OF_MEMORY: GLenum = 1285;
    pub const PACK_ALIGNMENT: GLenum = 3333;
    pub const PACK_ROW_LENGTH: GLenum = 3330;
    pub const PACK_SKIP_PIXELS: GLenum = 3332;
    pub const PACK_SKIP_ROWS: GLenum = 3331;
    pub const PIXEL_PACK_BUFFER: GLenum = 35051;
    pub const PIXEL_PACK_BUFFER_BINDING: GLenum = 35053;
    pub const PIXEL_UNPACK_BUFFER: GLenum = 35052;
    pub const PIXEL_UNPACK_BUFFER_BINDING: GLenum = 35055;
    pub const POINTS: GLenum = 0;
    pub const POLYGON_OFFSET_FACTOR: GLenum = 32824;
    pub const POLYGON_OFFSET_FILL: GLenum = 32823;
    pub const POLYGON_OFFSET_UNITS: GLenum = 10752;
    pub const QUERY_RESULT: GLenum = 34918;
    pub const QUERY_RESULT_AVAILABLE: GLenum = 34919;
    pub const R11F_G11F_B10F: GLenum = 35898;
    pub const R16F: GLenum = 33325;
    pub const R16I: GLenum = 33331;
    pub const R16UI: GLenum = 33332;
    pub const R32F: GLenum = 33326;
    pub const R32I: GLenum = 33333;
    pub const R32UI: GLenum = 33334;
    pub const R8: GLenum = 33321;
    pub const R8I: GLenum = 33329;
    pub const R8UI: GLenum = 33330;
    pub const R8_SNORM: GLenum = 36756;
    pub const RASTERIZER_DISCARD: GLenum = 35977;
    pub const READ_BUFFER: GLenum = 3074;
    pub const READ_FRAMEBUFFER: GLenum = 36008;
    pub const READ_FRAMEBUFFER_BINDING: GLenum = 36010;
    pub const RED: GLenum = 6403;
    pub const RED_BITS: GLenum = 3410;
    pub const RED_INTEGER: GLenum = 36244;
    pub const RENDERBUFFER: GLenum = 36161;
    pub const RENDERBUFFER_ALPHA_SIZE: GLenum = 36179;
    pub const RENDERBUFFER_BINDING: GLenum = 36007;
    pub const RENDERBUFFER_BLUE_SIZE: GLenum = 36178;
    pub const RENDERBUFFER_DEPTH_SIZE: GLenum = 36180;
    pub const RENDERBUFFER_GREEN_SIZE: GLenum = 36177;
    pub const RENDERBUFFER_HEIGHT: GLenum = 36163;
    pub const RENDERBUFFER_INTERNAL_FORMAT: GLenum = 36164;
    pub const RENDERBUFFER_RED_SIZE: GLenum = 36176;
    pub const RENDERBUFFER_SAMPLES: GLenum = 36011;
    pub const RENDERBUFFER_STENCIL_SIZE: GLenum = 36181;
    pub const RENDERBUFFER_WIDTH: GLenum = 36162;
    pub const RENDERER: GLenum = 7937;
    pub const REPEAT: GLenum = 10497;
    pub const REPLACE: GLenum = 7681;
    pub const RG: GLenum = 33319;
    pub const RG16F: GLenum = 33327;
    pub const RG16I: GLenum = 33337;
    pub const RG16UI: GLenum = 33338;
    pub const RG32F: GLenum = 33328;
    pub const RG32I: GLenum = 33339;
    pub const RG32UI: GLenum = 33340;
    pub const RG8: GLenum = 33323;
    pub const RG8I: GLenum = 33335;
    pub const RG8UI: GLenum = 33336;
    pub const RG8_SNORM: GLenum = 36757;
    pub const RGB: GLenum = 6407;
    pub const RGB10_A2: GLenum = 32857;
    pub const RGB10_A2UI: GLenum = 36975;
    pub const RGB16F: GLenum = 34843;
    pub const RGB16I: GLenum = 36233;
    pub const RGB16UI: GLenum = 36215;
    pub const RGB32F: GLenum = 34837;
    pub const RGB32I: GLenum = 36227;
    pub const RGB32UI: GLenum = 36209;
    pub const RGB565: GLenum = 36194;
    pub const RGB5_A1: GLenum = 32855;
    pub const RGB8: GLenum = 32849;
    pub const RGB8I: GLenum = 36239;
    pub const RGB8UI: GLenum = 36221;
    pub const RGB8_SNORM: GLenum = 36758;
    pub const RGB9_E5: GLenum = 35901;
    pub const RGBA: GLenum = 6408;
    pub const RGBA16F: GLenum = 34842;
    pub const RGBA16I: GLenum = 36232;
    pub const RGBA16UI: GLenum = 36214;
    pub const RGBA32F: GLenum = 34836;
    pub const RGBA32I: GLenum = 36226;
    pub const RGBA32UI: GLenum = 36208;
    pub const RGBA4: GLenum = 32854;
    pub const RGBA8: GLenum = 32856;
    pub const RGBA8I: GLenum = 36238;
    pub const RGBA8UI: GLenum = 36220;
    pub const RGBA8_SNORM: GLenum = 36759;
    pub const RGBA_INTEGER: GLenum = 36249;
    pub const RGB_INTEGER: GLenum = 36248;
    pub const RG_INTEGER: GLenum = 33320;
    pub const SAMPLER_2D: GLenum = 35678;
    pub const SAMPLER_2D_ARRAY: GLenum = 36289;
    pub const SAMPLER_2D_ARRAY_SHADOW: GLenum = 36292;
    pub const SAMPLER_2D_SHADOW: GLenum = 35682;
    pub const SAMPLER_3D: GLenum = 35679;
    pub const SAMPLER_BINDING: GLenum = 35097;
    pub const SAMPLER_CUBE: GLenum = 35680;
    pub const SAMPLER_CUBE_SHADOW: GLenum = 36293;
    pub const SAMPLES: GLenum = 32937;
    pub const SAMPLE_ALPHA_TO_COVERAGE: GLenum = 32926;
    pub const SAMPLE_BUFFERS: GLenum = 32936;
    pub const SAMPLE_COVERAGE: GLenum = 32928;
    pub const SAMPLE_COVERAGE_INVERT: GLenum = 32939;
    pub const SAMPLE_COVERAGE_VALUE: GLenum = 32938;
    pub const SCISSOR_BOX: GLenum = 3088;
    pub const SCISSOR_TEST: GLenum = 3089;
    pub const SEPARATE_ATTRIBS: GLenum = 35981;
    pub const SHADER_TYPE: GLenum = 35663;
    pub const SHADING_LANGUAGE_VERSION: GLenum = 35724;
    pub const SHORT: GLenum = 5122;
    pub const SIGNALED: GLenum = 37145;
    pub const SIGNED_NORMALIZED: GLenum = 36764;
    pub const SRC_ALPHA: GLenum = 770;
    pub const SRC_ALPHA_SATURATE: GLenum = 776;
    pub const SRC_COLOR: GLenum = 768;
    pub const SRGB: GLenum = 35904;
    pub const SRGB8: GLenum = 35905;
    pub const SRGB8_ALPHA8: GLenum = 35907;
    pub const STATIC_COPY: GLenum = 35046;
    pub const STATIC_DRAW: GLenum = 35044;
    pub const STATIC_READ: GLenum = 35045;
    pub const STENCIL: GLenum = 6146;
    pub const STENCIL_ATTACHMENT: GLenum = 36128;
    pub const STENCIL_BACK_FAIL: GLenum = 34817;
    pub const STENCIL_BACK_FUNC: GLenum = 34816;
    pub const STENCIL_BACK_PASS_DEPTH_FAIL: GLenum = 34818;
    pub const STENCIL_BACK_PASS_DEPTH_PASS: GLenum = 34819;
    pub const STENCIL_BACK_REF: GLenum = 36003;
    pub const STENCIL_BACK_VALUE_MASK: GLenum = 36004;
    pub const STENCIL_BACK_WRITEMASK: GLenum = 36005;
    pub const STENCIL_BITS: GLenum = 3415;
    pub const STENCIL_BUFFER_BIT: GLenum = 1024;
    pub const STENCIL_CLEAR_VALUE: GLenum = 2961;
    pub const STENCIL_FAIL: GLenum = 2964;
    pub const STENCIL_FUNC: GLenum = 2962;
    pub const STENCIL_INDEX8: GLenum = 36168;
    pub const STENCIL_PASS_DEPTH_FAIL: GLenum = 2965;
    pub const STENCIL_PASS_DEPTH_PASS: GLenum = 2966;
    pub const STENCIL_REF: GLenum = 2967;
    pub const STENCIL_TEST: GLenum = 2960;
    pub const STENCIL_VALUE_MASK: GLenum = 2963;
    pub const STENCIL_WRITEMASK: GLenum = 2968;
    pub const STREAM_COPY: GLenum = 35042;
    pub const STREAM_DRAW: GLenum = 35040;
    pub const STREAM_READ: GLenum = 35041;
    pub const SUBPIXEL_BITS: GLenum = 3408;
    pub const SYNC_CONDITION: GLenum = 37139;
    pub const SYNC_FENCE: GLenum = 37142;
    pub const SYNC_FLAGS: GLenum = 37141;
    pub const SYNC_FLUSH_COMMANDS_BIT: GLenum = 1;
    pub const SYNC_GPU_COMMANDS_COMPLETE: GLenum = 37143;
    pub const SYNC_STATUS: GLenum = 37140;
    pub const TEXTURE: GLenum = 5890;
    pub const TEXTURE0: GLenum = 33984;
    pub const TEXTURE1: GLenum = 33985;
    pub const TEXTURE10: GLenum = 33994;
    pub const TEXTURE11: GLenum = 33995;
    pub const TEXTURE12: GLenum = 33996;
    pub const TEXTURE13: GLenum = 33997;
    pub const TEXTURE14: GLenum = 33998;
    pub const TEXTURE15: GLenum = 33999;
    pub const TEXTURE16: GLenum = 34000;
    pub const TEXTURE17: GLenum = 34001;
    pub const TEXTURE18: GLenum = 34002;
    pub const TEXTURE19: GLenum = 34003;
    pub const TEXTURE2: GLenum = 33986;
    pub const TEXTURE20: GLenum = 34004;
    pub const TEXTURE21: GLenum = 34005;
    pub const TEXTURE22: GLenum = 34006;
    pub const TEXTURE23: GLenum = 34007;
    pub const TEXTURE24: GLenum = 34008;
    pub const TEXTURE25: GLenum = 34009;
    pub const TEXTURE26: GLenum = 34010;
    pub const TEXTURE27: GLenum = 34011;
    pub const TEXTURE28: GLenum = 34012;
    pub const TEXTURE29: GLenum = 34013;
    pub const TEXTURE3: GLenum = 33987;
    pub const TEXTURE30: GLenum = 34014;
    pub const TEXTURE31: GLenum = 34015;
    pub const TEXTURE4: GLenum = 33988;
    pub const TEXTURE5: GLenum = 33989;
    pub const TEXTURE6: GLenum = 33990;
    pub const TEXTURE7: GLenum = 33991;
    pub const TEXTURE8: GLenum = 33992;
    pub const TEXTURE9: GLenum = 33993;
    pub const TEXTURE_2D: GLenum = 3553;
    pub const TEXTURE_2D_ARRAY: GLenum = 35866;
    pub const TEXTURE_3D: GLenum = 32879;
    pub const TEXTURE_BASE_LEVEL: GLenum = 33084;
    pub const TEXTURE_BINDING_2D: GLenum = 32873;
    pub const TEXTURE_BINDING_2D_ARRAY: GLenum = 35869;
    pub const TEXTURE_BINDING_3D: GLenum = 32874;
    pub const TEXTURE_BINDING_CUBE_MAP: GLenum = 34068;
    pub const TEXTURE_COMPARE_FUNC: GLenum = 34893;
    pub const TEXTURE_COMPARE_MODE: GLenum = 34892;
    pub const TEXTURE_CUBE_MAP: GLenum = 34067;
    pub const TEXTURE_CUBE_MAP_NEGATIVE_X: GLenum = 34070;
    pub const TEXTURE_CUBE_MAP_NEGATIVE_Y: GLenum = 34072;
    pub const TEXTURE_CUBE_MAP_NEGATIVE_Z: GLenum = 34074;
    pub const TEXTURE_CUBE_MAP_POSITIVE_X: GLenum = 34069;
    pub const TEXTURE_CUBE_MAP_POSITIVE_Y: GLenum = 34071;
    pub const TEXTURE_CUBE_MAP_POSITIVE_Z: GLenum = 34073;
    pub const TEXTURE_IMMUTABLE_FORMAT: GLenum = 37167;
    pub const TEXTURE_IMMUTABLE_LEVELS: GLenum = 33503;
    pub const TEXTURE_MAG_FILTER: GLenum = 10240;
    pub const TEXTURE_MAX_LEVEL: GLenum = 33085;
    pub const TEXTURE_MAX_LOD: GLenum = 33083;
    pub const TEXTURE_MIN_FILTER: GLenum = 10241;
    pub const TEXTURE_MIN_LOD: GLenum = 33082;
    pub const TEXTURE_WRAP_R: GLenum = 32882;
    pub const TEXTURE_WRAP_S: GLenum = 10242;
    pub const TEXTURE_WRAP_T: GLenum = 10243;
    pub const TIMEOUT_EXPIRED: GLenum = 37147;
    pub const TIMEOUT_IGNORED: GLint64 = -1;
    pub const TRANSFORM_FEEDBACK: GLenum = 36386;
    pub const TRANSFORM_FEEDBACK_ACTIVE: GLenum = 36388;
    pub const TRANSFORM_FEEDBACK_BINDING: GLenum = 36389;
    pub const TRANSFORM_FEEDBACK_BUFFER: GLenum = 35982;
    pub const TRANSFORM_FEEDBACK_BUFFER_BINDING: GLenum = 35983;
    pub const TRANSFORM_FEEDBACK_BUFFER_MODE: GLenum = 35967;
    pub const TRANSFORM_FEEDBACK_BUFFER_SIZE: GLenum = 35973;
    pub const TRANSFORM_FEEDBACK_BUFFER_START: GLenum = 35972;
    pub const TRANSFORM_FEEDBACK_PAUSED: GLenum = 36387;
    pub const TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: GLenum = 35976;
    pub const TRANSFORM_FEEDBACK_VARYINGS: GLenum = 35971;
    pub const TRIANGLES: GLenum = 4;
    pub const TRIANGLE_FAN: GLenum = 6;
    pub const TRIANGLE_STRIP: GLenum = 5;
    pub const UNIFORM_ARRAY_STRIDE: GLenum = 35388;
    pub const UNIFORM_BLOCK_ACTIVE_UNIFORMS: GLenum = 35394;
    pub const UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES: GLenum = 35395;
    pub const UNIFORM_BLOCK_BINDING: GLenum = 35391;
    pub const UNIFORM_BLOCK_DATA_SIZE: GLenum = 35392;
    pub const UNIFORM_BLOCK_INDEX: GLenum = 35386;
    pub const UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER: GLenum = 35398;
    pub const UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER: GLenum = 35396;
    pub const UNIFORM_BUFFER: GLenum = 35345;
    pub const UNIFORM_BUFFER_BINDING: GLenum = 35368;
    pub const UNIFORM_BUFFER_OFFSET_ALIGNMENT: GLenum = 35380;
    pub const UNIFORM_BUFFER_SIZE: GLenum = 35370;
    pub const UNIFORM_BUFFER_START: GLenum = 35369;
    pub const UNIFORM_IS_ROW_MAJOR: GLenum = 35390;
    pub const UNIFORM_MATRIX_STRIDE: GLenum = 35389;
    pub const UNIFORM_OFFSET: GLenum = 35387;
    pub const UNIFORM_SIZE: GLenum = 35384;
    pub const UNIFORM_TYPE: GLenum = 35383;
    pub const UNPACK_ALIGNMENT: GLenum = 3317;
    pub const UNPACK_COLORSPACE_CONVERSION_WEBGL: GLenum = 37443;
    pub const UNPACK_FLIP_Y_WEBGL: GLenum = 37440;
    pub const UNPACK_IMAGE_HEIGHT: GLenum = 32878;
    pub const UNPACK_PREMULTIPLY_ALPHA_WEBGL: GLenum = 37441;
    pub const UNPACK_ROW_LENGTH: GLenum = 3314;
    pub const UNPACK_SKIP_IMAGES: GLenum = 32877;
    pub const UNPACK_SKIP_PIXELS: GLenum = 3316;
    pub const UNPACK_SKIP_ROWS: GLenum = 3315;
    pub const UNSIGNALED: GLenum = 37144;
    pub const UNSIGNED_BYTE: GLenum = 5121;
    pub const UNSIGNED_INT: GLenum = 5125;
    pub const UNSIGNED_INT_10F_11F_11F_REV: GLenum = 35899;
    pub const UNSIGNED_INT_24_8: GLenum = 34042;
    pub const UNSIGNED_INT_2_10_10_10_REV: GLenum = 33640;
    pub const UNSIGNED_INT_5_9_9_9_REV: GLenum = 35902;
    pub const UNSIGNED_INT_SAMPLER_2D: GLenum = 36306;
    pub const UNSIGNED_INT_SAMPLER_2D_ARRAY: GLenum = 36311;
    pub const UNSIGNED_INT_SAMPLER_3D: GLenum = 36307;
    pub const UNSIGNED_INT_SAMPLER_CUBE: GLenum = 36308;
    pub const UNSIGNED_INT_VEC2: GLenum = 36294;
    pub const UNSIGNED_INT_VEC3: GLenum = 36295;
    pub const UNSIGNED_INT_VEC4: GLenum = 36296;
    pub const UNSIGNED_NORMALIZED: GLenum = 35863;
    pub const UNSIGNED_SHORT: GLenum = 5123;
    pub const UNSIGNED_SHORT_4_4_4_4: GLenum = 32819;
    pub const UNSIGNED_SHORT_5_5_5_1: GLenum = 32820;
    pub const UNSIGNED_SHORT_5_6_5: GLenum = 33635;
    pub const VALIDATE_STATUS: GLenum = 35715;
    pub const VENDOR: GLenum = 7936;
    pub const VERSION: GLenum = 7938;
    pub const VERTEX_ARRAY_BINDING: GLenum = 34229;
    pub const VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: GLenum = 34975;
    pub const VERTEX_ATTRIB_ARRAY_DIVISOR: GLenum = 35070;
    pub const VERTEX_ATTRIB_ARRAY_ENABLED: GLenum = 34338;
    pub const VERTEX_ATTRIB_ARRAY_INTEGER: GLenum = 35069;
    pub const VERTEX_ATTRIB_ARRAY_NORMALIZED: GLenum = 34922;
    pub const VERTEX_ATTRIB_ARRAY_POINTER: GLenum = 34373;
    pub const VERTEX_ATTRIB_ARRAY_SIZE: GLenum = 34339;
    pub const VERTEX_ATTRIB_ARRAY_STRIDE: GLenum = 34340;
    pub const VERTEX_ATTRIB_ARRAY_TYPE: GLenum = 34341;
    pub const VERTEX_SHADER: GLenum = 35633;
    pub const VIEWPORT: GLenum = 2978;
    pub const WAIT_FAILED: GLenum = 37149;
    pub const ZERO: GLenum = 0;

    pub fn new<F>(loadfn: F) -> WebGLRenderingContext where F: FnMut(&str) -> *const std::os::raw::c_void
    {
        WebGLRenderingContext 
        {
            common: GLContext::new(loadfn),
        }
    }
}

impl WebGL2RenderingContext
{
    pub const ACTIVE_ATTRIBUTES: GLenum = 35721;
    pub const ACTIVE_TEXTURE: GLenum = 34016;
    pub const ACTIVE_UNIFORMS: GLenum = 35718;
    pub const ACTIVE_UNIFORM_BLOCKS: GLenum = 35382;
    pub const ALIASED_LINE_WIDTH_RANGE: GLenum = 33902;
    pub const ALIASED_POINT_SIZE_RANGE: GLenum = 33901;
    pub const ALPHA: GLenum = 6406;
    pub const ALPHA_BITS: GLenum = 3413;
    pub const ALREADY_SIGNALED: GLenum = 37146;
    pub const ALWAYS: GLenum = 519;
    pub const ANY_SAMPLES_PASSED: GLenum = 35887;
    pub const ANY_SAMPLES_PASSED_CONSERVATIVE: GLenum = 36202;
    pub const ARRAY_BUFFER: GLenum = 34962;
    pub const ARRAY_BUFFER_BINDING: GLenum = 34964;
    pub const ATTACHED_SHADERS: GLenum = 35717;
    pub const BACK: GLenum = 1029;
    pub const BLEND: GLenum = 3042;
    pub const BLEND_COLOR: GLenum = 32773;
    pub const BLEND_DST_ALPHA: GLenum = 32970;
    pub const BLEND_DST_RGB: GLenum = 32968;
    pub const BLEND_EQUATION: GLenum = 32777;
    pub const BLEND_EQUATION_ALPHA: GLenum = 34877;
    pub const BLEND_EQUATION_RGB: GLenum = 32777;
    pub const BLEND_SRC_ALPHA: GLenum = 32971;
    pub const BLEND_SRC_RGB: GLenum = 32969;
    pub const BLUE_BITS: GLenum = 3412;
    pub const BOOL: GLenum = 35670;
    pub const BOOL_VEC2: GLenum = 35671;
    pub const BOOL_VEC3: GLenum = 35672;
    pub const BOOL_VEC4: GLenum = 35673;
    pub const BROWSER_DEFAULT_WEBGL: GLenum = 37444;
    pub const BUFFER_SIZE: GLenum = 34660;
    pub const BUFFER_USAGE: GLenum = 34661;
    pub const BYTE: GLenum = 5120;
    pub const CCW: GLenum = 2305;
    pub const CLAMP_TO_EDGE: GLenum = 33071;
    pub const COLOR: GLenum = 6144;
    pub const COLOR_ATTACHMENT0: GLenum = 36064;
    pub const COLOR_ATTACHMENT1: GLenum = 36065;
    pub const COLOR_ATTACHMENT10: GLenum = 36074;
    pub const COLOR_ATTACHMENT11: GLenum = 36075;
    pub const COLOR_ATTACHMENT12: GLenum = 36076;
    pub const COLOR_ATTACHMENT13: GLenum = 36077;
    pub const COLOR_ATTACHMENT14: GLenum = 36078;
    pub const COLOR_ATTACHMENT15: GLenum = 36079;
    pub const COLOR_ATTACHMENT2: GLenum = 36066;
    pub const COLOR_ATTACHMENT3: GLenum = 36067;
    pub const COLOR_ATTACHMENT4: GLenum = 36068;
    pub const COLOR_ATTACHMENT5: GLenum = 36069;
    pub const COLOR_ATTACHMENT6: GLenum = 36070;
    pub const COLOR_ATTACHMENT7: GLenum = 36071;
    pub const COLOR_ATTACHMENT8: GLenum = 36072;
    pub const COLOR_ATTACHMENT9: GLenum = 36073;
    pub const COLOR_BUFFER_BIT: GLenum = 16384;
    pub const COLOR_CLEAR_VALUE: GLenum = 3106;
    pub const COLOR_WRITEMASK: GLenum = 3107;
    pub const COMPARE_REF_TO_TEXTURE: GLenum = 34894;
    pub const COMPILE_STATUS: GLenum = 35713;
    pub const COMPRESSED_TEXTURE_FORMATS: GLenum = 34467;
    pub const CONDITION_SATISFIED: GLenum = 37148;
    pub const CONSTANT_ALPHA: GLenum = 32771;
    pub const CONSTANT_COLOR: GLenum = 32769;
    pub const CONTEXT_LOST_WEBGL: GLenum = 37442;
    pub const COPY_READ_BUFFER: GLenum = 36662;
    pub const COPY_READ_BUFFER_BINDING: GLenum = 36662;
    pub const COPY_WRITE_BUFFER: GLenum = 36663;
    pub const COPY_WRITE_BUFFER_BINDING: GLenum = 36663;
    pub const CULL_FACE: GLenum = 2884;
    pub const CULL_FACE_MODE: GLenum = 2885;
    pub const CURRENT_PROGRAM: GLenum = 35725;
    pub const CURRENT_QUERY: GLenum = 34917;
    pub const CURRENT_VERTEX_ATTRIB: GLenum = 34342;
    pub const CW: GLenum = 2304;
    pub const DECR: GLenum = 7683;
    pub const DECR_WRAP: GLenum = 34056;
    pub const DELETE_STATUS: GLenum = 35712;
    pub const DEPTH: GLenum = 6145;
    pub const DEPTH24_STENCIL8: GLenum = 35056;
    pub const DEPTH32F_STENCIL8: GLenum = 36013;
    pub const DEPTH_ATTACHMENT: GLenum = 36096;
    pub const DEPTH_BITS: GLenum = 3414;
    pub const DEPTH_BUFFER_BIT: GLenum = 256;
    pub const DEPTH_CLEAR_VALUE: GLenum = 2931;
    pub const DEPTH_COMPONENT: GLenum = 6402;
    pub const DEPTH_COMPONENT16: GLenum = 33189;
    pub const DEPTH_COMPONENT24: GLenum = 33190;
    pub const DEPTH_COMPONENT32F: GLenum = 36012;
    pub const DEPTH_FUNC: GLenum = 2932;
    pub const DEPTH_RANGE: GLenum = 2928;
    pub const DEPTH_STENCIL: GLenum = 34041;
    pub const DEPTH_STENCIL_ATTACHMENT: GLenum = 33306;
    pub const DEPTH_TEST: GLenum = 2929;
    pub const DEPTH_WRITEMASK: GLenum = 2930;
    pub const DITHER: GLenum = 3024;
    pub const DONT_CARE: GLenum = 4352;
    pub const DRAW_BUFFER0: GLenum = 34853;
    pub const DRAW_BUFFER1: GLenum = 34854;
    pub const DRAW_BUFFER10: GLenum = 34863;
    pub const DRAW_BUFFER11: GLenum = 34864;
    pub const DRAW_BUFFER12: GLenum = 34865;
    pub const DRAW_BUFFER13: GLenum = 34866;
    pub const DRAW_BUFFER14: GLenum = 34867;
    pub const DRAW_BUFFER15: GLenum = 34868;
    pub const DRAW_BUFFER2: GLenum = 34855;
    pub const DRAW_BUFFER3: GLenum = 34856;
    pub const DRAW_BUFFER4: GLenum = 34857;
    pub const DRAW_BUFFER5: GLenum = 34858;
    pub const DRAW_BUFFER6: GLenum = 34859;
    pub const DRAW_BUFFER7: GLenum = 34860;
    pub const DRAW_BUFFER8: GLenum = 34861;
    pub const DRAW_BUFFER9: GLenum = 34862;
    pub const DRAW_FRAMEBUFFER: GLenum = 36009;
    pub const DRAW_FRAMEBUFFER_BINDING: GLenum = 36006;
    pub const DST_ALPHA: GLenum = 772;
    pub const DST_COLOR: GLenum = 774;
    pub const DYNAMIC_COPY: GLenum = 35050;
    pub const DYNAMIC_DRAW: GLenum = 35048;
    pub const DYNAMIC_READ: GLenum = 35049;
    pub const ELEMENT_ARRAY_BUFFER: GLenum = 34963;
    pub const ELEMENT_ARRAY_BUFFER_BINDING: GLenum = 34965;
    pub const EQUAL: GLenum = 514;
    pub const FASTEST: GLenum = 4353;
    pub const FLOAT: GLenum = 5126;
    pub const FLOAT_32_UNSIGNED_INT_24_8_REV: GLenum = 36269;
    pub const FLOAT_MAT2: GLenum = 35674;
    pub const FLOAT_MAT2X3: GLenum = 35685;
    pub const FLOAT_MAT2X4: GLenum = 35686;
    pub const FLOAT_MAT3: GLenum = 35675;
    pub const FLOAT_MAT3X2: GLenum = 35687;
    pub const FLOAT_MAT3X4: GLenum = 35688;
    pub const FLOAT_MAT4: GLenum = 35676;
    pub const FLOAT_MAT4X2: GLenum = 35689;
    pub const FLOAT_MAT4X3: GLenum = 35690;
    pub const FLOAT_VEC2: GLenum = 35664;
    pub const FLOAT_VEC3: GLenum = 35665;
    pub const FLOAT_VEC4: GLenum = 35666;
    pub const FRAGMENT_SHADER: GLenum = 35632;
    pub const FRAGMENT_SHADER_DERIVATIVE_HINT: GLenum = 35723;
    pub const FRAMEBUFFER: GLenum = 36160;
    pub const FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: GLenum = 33301;
    pub const FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: GLenum = 33300;
    pub const FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING: GLenum = 33296;
    pub const FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE: GLenum = 33297;
    pub const FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: GLenum = 33302;
    pub const FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: GLenum = 33299;
    pub const FRAMEBUFFER_ATTACHMENT_OBJECT_NAME: GLenum = 36049;
    pub const FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE: GLenum = 36048;
    pub const FRAMEBUFFER_ATTACHMENT_RED_SIZE: GLenum = 33298;
    pub const FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: GLenum = 33303;
    pub const FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE: GLenum = 36051;
    pub const FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER: GLenum = 36052;
    pub const FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL: GLenum = 36050;
    pub const FRAMEBUFFER_BINDING: GLenum = 36006;
    pub const FRAMEBUFFER_COMPLETE: GLenum = 36053;
    pub const FRAMEBUFFER_DEFAULT: GLenum = 33304;
    pub const FRAMEBUFFER_INCOMPLETE_ATTACHMENT: GLenum = 36054;
    pub const FRAMEBUFFER_INCOMPLETE_DIMENSIONS: GLenum = 36057;
    pub const FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: GLenum = 36055;
    pub const FRAMEBUFFER_INCOMPLETE_MULTISAMPLE: GLenum = 36182;
    pub const FRAMEBUFFER_UNSUPPORTED: GLenum = 36061;
    pub const FRONT: GLenum = 1028;
    pub const FRONT_AND_BACK: GLenum = 1032;
    pub const FRONT_FACE: GLenum = 2886;
    pub const FUNC_ADD: GLenum = 32774;
    pub const FUNC_REVERSE_SUBTRACT: GLenum = 32779;
    pub const FUNC_SUBTRACT: GLenum = 32778;
    pub const GENERATE_MIPMAP_HINT: GLenum = 33170;
    pub const GEQUAL: GLenum = 518;
    pub const GREATER: GLenum = 516;
    pub const GREEN_BITS: GLenum = 3411;
    pub const HALF_FLOAT: GLenum = 5131;
    pub const HIGH_FLOAT: GLenum = 36338;
    pub const HIGH_INT: GLenum = 36341;
    pub const IMPLEMENTATION_COLOR_READ_FORMAT: GLenum = 35739;
    pub const IMPLEMENTATION_COLOR_READ_TYPE: GLenum = 35738;
    pub const INFO_LOG_LENGTH: GLenum = 35716;
    pub const INCR: GLenum = 7682;
    pub const INCR_WRAP: GLenum = 34055;
    pub const INT: GLenum = 5124;
    pub const INTERLEAVED_ATTRIBS: GLenum = 35980;
    pub const INT_2_10_10_10_REV: GLenum = 36255;
    pub const INT_SAMPLER_2D: GLenum = 36298;
    pub const INT_SAMPLER_2D_ARRAY: GLenum = 36303;
    pub const INT_SAMPLER_3D: GLenum = 36299;
    pub const INT_SAMPLER_CUBE: GLenum = 36300;
    pub const INT_VEC2: GLenum = 35667;
    pub const INT_VEC3: GLenum = 35668;
    pub const INT_VEC4: GLenum = 35669;
    pub const INVALID_ENUM: GLenum = 1280;
    pub const INVALID_FRAMEBUFFER_OPERATION: GLenum = 1286;
    pub const INVALID_INDEX: GLenum = 4294967295;
    pub const INVALID_OPERATION: GLenum = 1282;
    pub const INVALID_VALUE: GLenum = 1281;
    pub const INVERT: GLenum = 5386;
    pub const KEEP: GLenum = 7680;
    pub const LEQUAL: GLenum = 515;
    pub const LESS: GLenum = 513;
    pub const LINEAR: GLenum = 9729;
    pub const LINEAR_MIPMAP_LINEAR: GLenum = 9987;
    pub const LINEAR_MIPMAP_NEAREST: GLenum = 9985;
    pub const LINES: GLenum = 1;
    pub const LINE_LOOP: GLenum = 2;
    pub const LINE_STRIP: GLenum = 3;
    pub const LINE_WIDTH: GLenum = 2849;
    pub const LINK_STATUS: GLenum = 35714;
    pub const LOW_FLOAT: GLenum = 36336;
    pub const LOW_INT: GLenum = 36339;
    pub const LUMINANCE: GLenum = 6409;
    pub const LUMINANCE_ALPHA: GLenum = 6410;
    pub const MAX: GLenum = 32776;
    pub const MAX_3D_TEXTURE_SIZE: GLenum = 32883;
    pub const MAX_ARRAY_TEXTURE_LAYERS: GLenum = 35071;
    pub const MAX_CLIENT_WAIT_TIMEOUT_WEBGL: GLenum = 37447;
    pub const MAX_COLOR_ATTACHMENTS: GLenum = 36063;
    pub const MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS: GLenum = 35379;
    pub const MAX_COMBINED_TEXTURE_IMAGE_UNITS: GLenum = 35661;
    pub const MAX_COMBINED_UNIFORM_BLOCKS: GLenum = 35374;
    pub const MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS: GLenum = 35377;
    pub const MAX_CUBE_MAP_TEXTURE_SIZE: GLenum = 34076;
    pub const MAX_DRAW_BUFFERS: GLenum = 34852;
    pub const MAX_ELEMENTS_INDICES: GLenum = 33001;
    pub const MAX_ELEMENTS_VERTICES: GLenum = 33000;
    pub const MAX_ELEMENT_INDEX: GLenum = 36203;
    pub const MAX_FRAGMENT_INPUT_COMPONENTS: GLenum = 37157;
    pub const MAX_FRAGMENT_UNIFORM_BLOCKS: GLenum = 35373;
    pub const MAX_FRAGMENT_UNIFORM_COMPONENTS: GLenum = 35657;
    pub const MAX_FRAGMENT_UNIFORM_VECTORS: GLenum = 36349;
    pub const MAX_PROGRAM_TEXEL_OFFSET: GLenum = 35077;
    pub const MAX_RENDERBUFFER_SIZE: GLenum = 34024;
    pub const MAX_SAMPLES: GLenum = 36183;
    pub const MAX_SERVER_WAIT_TIMEOUT: GLenum = 37137;
    pub const MAX_TEXTURE_IMAGE_UNITS: GLenum = 34930;
    pub const MAX_TEXTURE_LOD_BIAS: GLenum = 34045;
    pub const MAX_TEXTURE_SIZE: GLenum = 3379;
    pub const MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS: GLenum = 35978;
    pub const MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS: GLenum = 35979;
    pub const MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS: GLenum = 35968;
    pub const MAX_UNIFORM_BLOCK_SIZE: GLenum = 35376;
    pub const MAX_UNIFORM_BUFFER_BINDINGS: GLenum = 35375;
    pub const MAX_VARYING_COMPONENTS: GLenum = 35659;
    pub const MAX_VARYING_VECTORS: GLenum = 36348;
    pub const MAX_VERTEX_ATTRIBS: GLenum = 34921;
    pub const MAX_VERTEX_OUTPUT_COMPONENTS: GLenum = 37154;
    pub const MAX_VERTEX_TEXTURE_IMAGE_UNITS: GLenum = 35660;
    pub const MAX_VERTEX_UNIFORM_BLOCKS: GLenum = 35371;
    pub const MAX_VERTEX_UNIFORM_COMPONENTS: GLenum = 35658;
    pub const MAX_VERTEX_UNIFORM_VECTORS: GLenum = 36347;
    pub const MAX_VIEWPORT_DIMS: GLenum = 3386;
    pub const MEDIUM_FLOAT: GLenum = 36337;
    pub const MEDIUM_INT: GLenum = 36340;
    pub const MIN: GLenum = 32775;
    pub const MIN_PROGRAM_TEXEL_OFFSET: GLenum = 35076;
    pub const MIRRORED_REPEAT: GLenum = 33648;
    pub const NEAREST: GLenum = 9728;
    pub const NEAREST_MIPMAP_LINEAR: GLenum = 9986;
    pub const NEAREST_MIPMAP_NEAREST: GLenum = 9984;
    pub const NEVER: GLenum = 512;
    pub const NICEST: GLenum = 4354;
    pub const NONE: GLenum = 0;
    pub const NOTEQUAL: GLenum = 517;
    pub const NO_ERROR: GLenum = 0;
    pub const OBJECT_TYPE: GLenum = 37138;
    pub const ONE: GLenum = 1;
    pub const ONE_MINUS_CONSTANT_ALPHA: GLenum = 32772;
    pub const ONE_MINUS_CONSTANT_COLOR: GLenum = 32770;
    pub const ONE_MINUS_DST_ALPHA: GLenum = 773;
    pub const ONE_MINUS_DST_COLOR: GLenum = 775;
    pub const ONE_MINUS_SRC_ALPHA: GLenum = 771;
    pub const ONE_MINUS_SRC_COLOR: GLenum = 769;
    pub const OUT_OF_MEMORY: GLenum = 1285;
    pub const PACK_ALIGNMENT: GLenum = 3333;
    pub const PACK_ROW_LENGTH: GLenum = 3330;
    pub const PACK_SKIP_PIXELS: GLenum = 3332;
    pub const PACK_SKIP_ROWS: GLenum = 3331;
    pub const PIXEL_PACK_BUFFER: GLenum = 35051;
    pub const PIXEL_PACK_BUFFER_BINDING: GLenum = 35053;
    pub const PIXEL_UNPACK_BUFFER: GLenum = 35052;
    pub const PIXEL_UNPACK_BUFFER_BINDING: GLenum = 35055;
    pub const POINTS: GLenum = 0;
    pub const POLYGON_OFFSET_FACTOR: GLenum = 32824;
    pub const POLYGON_OFFSET_FILL: GLenum = 32823;
    pub const POLYGON_OFFSET_UNITS: GLenum = 10752;
    pub const QUERY_RESULT: GLenum = 34918;
    pub const QUERY_RESULT_AVAILABLE: GLenum = 34919;
    pub const R11F_G11F_B10F: GLenum = 35898;
    pub const R16F: GLenum = 33325;
    pub const R16I: GLenum = 33331;
    pub const R16UI: GLenum = 33332;
    pub const R32F: GLenum = 33326;
    pub const R32I: GLenum = 33333;
    pub const R32UI: GLenum = 33334;
    pub const R8: GLenum = 33321;
    pub const R8I: GLenum = 33329;
    pub const R8UI: GLenum = 33330;
    pub const R8_SNORM: GLenum = 36756;
    pub const RASTERIZER_DISCARD: GLenum = 35977;
    pub const READ_BUFFER: GLenum = 3074;
    pub const READ_FRAMEBUFFER: GLenum = 36008;
    pub const READ_FRAMEBUFFER_BINDING: GLenum = 36010;
    pub const RED: GLenum = 6403;
    pub const RED_BITS: GLenum = 3410;
    pub const RED_INTEGER: GLenum = 36244;
    pub const RENDERBUFFER: GLenum = 36161;
    pub const RENDERBUFFER_ALPHA_SIZE: GLenum = 36179;
    pub const RENDERBUFFER_BINDING: GLenum = 36007;
    pub const RENDERBUFFER_BLUE_SIZE: GLenum = 36178;
    pub const RENDERBUFFER_DEPTH_SIZE: GLenum = 36180;
    pub const RENDERBUFFER_GREEN_SIZE: GLenum = 36177;
    pub const RENDERBUFFER_HEIGHT: GLenum = 36163;
    pub const RENDERBUFFER_INTERNAL_FORMAT: GLenum = 36164;
    pub const RENDERBUFFER_RED_SIZE: GLenum = 36176;
    pub const RENDERBUFFER_SAMPLES: GLenum = 36011;
    pub const RENDERBUFFER_STENCIL_SIZE: GLenum = 36181;
    pub const RENDERBUFFER_WIDTH: GLenum = 36162;
    pub const RENDERER: GLenum = 7937;
    pub const REPEAT: GLenum = 10497;
    pub const REPLACE: GLenum = 7681;
    pub const RG: GLenum = 33319;
    pub const RG16F: GLenum = 33327;
    pub const RG16I: GLenum = 33337;
    pub const RG16UI: GLenum = 33338;
    pub const RG32F: GLenum = 33328;
    pub const RG32I: GLenum = 33339;
    pub const RG32UI: GLenum = 33340;
    pub const RG8: GLenum = 33323;
    pub const RG8I: GLenum = 33335;
    pub const RG8UI: GLenum = 33336;
    pub const RG8_SNORM: GLenum = 36757;
    pub const RGB: GLenum = 6407;
    pub const RGB10_A2: GLenum = 32857;
    pub const RGB10_A2UI: GLenum = 36975;
    pub const RGB16F: GLenum = 34843;
    pub const RGB16I: GLenum = 36233;
    pub const RGB16UI: GLenum = 36215;
    pub const RGB32F: GLenum = 34837;
    pub const RGB32I: GLenum = 36227;
    pub const RGB32UI: GLenum = 36209;
    pub const RGB565: GLenum = 36194;
    pub const RGB5_A1: GLenum = 32855;
    pub const RGB8: GLenum = 32849;
    pub const RGB8I: GLenum = 36239;
    pub const RGB8UI: GLenum = 36221;
    pub const RGB8_SNORM: GLenum = 36758;
    pub const RGB9_E5: GLenum = 35901;
    pub const RGBA: GLenum = 6408;
    pub const RGBA16F: GLenum = 34842;
    pub const RGBA16I: GLenum = 36232;
    pub const RGBA16UI: GLenum = 36214;
    pub const RGBA32F: GLenum = 34836;
    pub const RGBA32I: GLenum = 36226;
    pub const RGBA32UI: GLenum = 36208;
    pub const RGBA4: GLenum = 32854;
    pub const RGBA8: GLenum = 32856;
    pub const RGBA8I: GLenum = 36238;
    pub const RGBA8UI: GLenum = 36220;
    pub const RGBA8_SNORM: GLenum = 36759;
    pub const RGBA_INTEGER: GLenum = 36249;
    pub const RGB_INTEGER: GLenum = 36248;
    pub const RG_INTEGER: GLenum = 33320;
    pub const SAMPLER_2D: GLenum = 35678;
    pub const SAMPLER_2D_ARRAY: GLenum = 36289;
    pub const SAMPLER_2D_ARRAY_SHADOW: GLenum = 36292;
    pub const SAMPLER_2D_SHADOW: GLenum = 35682;
    pub const SAMPLER_3D: GLenum = 35679;
    pub const SAMPLER_BINDING: GLenum = 35097;
    pub const SAMPLER_CUBE: GLenum = 35680;
    pub const SAMPLER_CUBE_SHADOW: GLenum = 36293;
    pub const SAMPLES: GLenum = 32937;
    pub const SAMPLE_ALPHA_TO_COVERAGE: GLenum = 32926;
    pub const SAMPLE_BUFFERS: GLenum = 32936;
    pub const SAMPLE_COVERAGE: GLenum = 32928;
    pub const SAMPLE_COVERAGE_INVERT: GLenum = 32939;
    pub const SAMPLE_COVERAGE_VALUE: GLenum = 32938;
    pub const SCISSOR_BOX: GLenum = 3088;
    pub const SCISSOR_TEST: GLenum = 3089;
    pub const SEPARATE_ATTRIBS: GLenum = 35981;
    pub const SHADER_TYPE: GLenum = 35663;
    pub const SHADING_LANGUAGE_VERSION: GLenum = 35724;
    pub const SHORT: GLenum = 5122;
    pub const SIGNALED: GLenum = 37145;
    pub const SIGNED_NORMALIZED: GLenum = 36764;
    pub const SRC_ALPHA: GLenum = 770;
    pub const SRC_ALPHA_SATURATE: GLenum = 776;
    pub const SRC_COLOR: GLenum = 768;
    pub const SRGB: GLenum = 35904;
    pub const SRGB8: GLenum = 35905;
    pub const SRGB8_ALPHA8: GLenum = 35907;
    pub const STATIC_COPY: GLenum = 35046;
    pub const STATIC_DRAW: GLenum = 35044;
    pub const STATIC_READ: GLenum = 35045;
    pub const STENCIL: GLenum = 6146;
    pub const STENCIL_ATTACHMENT: GLenum = 36128;
    pub const STENCIL_BACK_FAIL: GLenum = 34817;
    pub const STENCIL_BACK_FUNC: GLenum = 34816;
    pub const STENCIL_BACK_PASS_DEPTH_FAIL: GLenum = 34818;
    pub const STENCIL_BACK_PASS_DEPTH_PASS: GLenum = 34819;
    pub const STENCIL_BACK_REF: GLenum = 36003;
    pub const STENCIL_BACK_VALUE_MASK: GLenum = 36004;
    pub const STENCIL_BACK_WRITEMASK: GLenum = 36005;
    pub const STENCIL_BITS: GLenum = 3415;
    pub const STENCIL_BUFFER_BIT: GLenum = 1024;
    pub const STENCIL_CLEAR_VALUE: GLenum = 2961;
    pub const STENCIL_FAIL: GLenum = 2964;
    pub const STENCIL_FUNC: GLenum = 2962;
    pub const STENCIL_INDEX8: GLenum = 36168;
    pub const STENCIL_PASS_DEPTH_FAIL: GLenum = 2965;
    pub const STENCIL_PASS_DEPTH_PASS: GLenum = 2966;
    pub const STENCIL_REF: GLenum = 2967;
    pub const STENCIL_TEST: GLenum = 2960;
    pub const STENCIL_VALUE_MASK: GLenum = 2963;
    pub const STENCIL_WRITEMASK: GLenum = 2968;
    pub const STREAM_COPY: GLenum = 35042;
    pub const STREAM_DRAW: GLenum = 35040;
    pub const STREAM_READ: GLenum = 35041;
    pub const SUBPIXEL_BITS: GLenum = 3408;
    pub const SYNC_CONDITION: GLenum = 37139;
    pub const SYNC_FENCE: GLenum = 37142;
    pub const SYNC_FLAGS: GLenum = 37141;
    pub const SYNC_FLUSH_COMMANDS_BIT: GLenum = 1;
    pub const SYNC_GPU_COMMANDS_COMPLETE: GLenum = 37143;
    pub const SYNC_STATUS: GLenum = 37140;
    pub const TEXTURE: GLenum = 5890;
    pub const TEXTURE0: GLenum = 33984;
    pub const TEXTURE1: GLenum = 33985;
    pub const TEXTURE10: GLenum = 33994;
    pub const TEXTURE11: GLenum = 33995;
    pub const TEXTURE12: GLenum = 33996;
    pub const TEXTURE13: GLenum = 33997;
    pub const TEXTURE14: GLenum = 33998;
    pub const TEXTURE15: GLenum = 33999;
    pub const TEXTURE16: GLenum = 34000;
    pub const TEXTURE17: GLenum = 34001;
    pub const TEXTURE18: GLenum = 34002;
    pub const TEXTURE19: GLenum = 34003;
    pub const TEXTURE2: GLenum = 33986;
    pub const TEXTURE20: GLenum = 34004;
    pub const TEXTURE21: GLenum = 34005;
    pub const TEXTURE22: GLenum = 34006;
    pub const TEXTURE23: GLenum = 34007;
    pub const TEXTURE24: GLenum = 34008;
    pub const TEXTURE25: GLenum = 34009;
    pub const TEXTURE26: GLenum = 34010;
    pub const TEXTURE27: GLenum = 34011;
    pub const TEXTURE28: GLenum = 34012;
    pub const TEXTURE29: GLenum = 34013;
    pub const TEXTURE3: GLenum = 33987;
    pub const TEXTURE30: GLenum = 34014;
    pub const TEXTURE31: GLenum = 34015;
    pub const TEXTURE4: GLenum = 33988;
    pub const TEXTURE5: GLenum = 33989;
    pub const TEXTURE6: GLenum = 33990;
    pub const TEXTURE7: GLenum = 33991;
    pub const TEXTURE8: GLenum = 33992;
    pub const TEXTURE9: GLenum = 33993;
    pub const TEXTURE_2D: GLenum = 3553;
    pub const TEXTURE_2D_ARRAY: GLenum = 35866;
    pub const TEXTURE_3D: GLenum = 32879;
    pub const TEXTURE_BASE_LEVEL: GLenum = 33084;
    pub const TEXTURE_BINDING_2D: GLenum = 32873;
    pub const TEXTURE_BINDING_2D_ARRAY: GLenum = 35869;
    pub const TEXTURE_BINDING_3D: GLenum = 32874;
    pub const TEXTURE_BINDING_CUBE_MAP: GLenum = 34068;
    pub const TEXTURE_COMPARE_FUNC: GLenum = 34893;
    pub const TEXTURE_COMPARE_MODE: GLenum = 34892;
    pub const TEXTURE_CUBE_MAP: GLenum = 34067;
    pub const TEXTURE_CUBE_MAP_NEGATIVE_X: GLenum = 34070;
    pub const TEXTURE_CUBE_MAP_NEGATIVE_Y: GLenum = 34072;
    pub const TEXTURE_CUBE_MAP_NEGATIVE_Z: GLenum = 34074;
    pub const TEXTURE_CUBE_MAP_POSITIVE_X: GLenum = 34069;
    pub const TEXTURE_CUBE_MAP_POSITIVE_Y: GLenum = 34071;
    pub const TEXTURE_CUBE_MAP_POSITIVE_Z: GLenum = 34073;
    pub const TEXTURE_IMMUTABLE_FORMAT: GLenum = 37167;
    pub const TEXTURE_IMMUTABLE_LEVELS: GLenum = 33503;
    pub const TEXTURE_MAG_FILTER: GLenum = 10240;
    pub const TEXTURE_MAX_LEVEL: GLenum = 33085;
    pub const TEXTURE_MAX_LOD: GLenum = 33083;
    pub const TEXTURE_MIN_FILTER: GLenum = 10241;
    pub const TEXTURE_MIN_LOD: GLenum = 33082;
    pub const TEXTURE_WRAP_R: GLenum = 32882;
    pub const TEXTURE_WRAP_S: GLenum = 10242;
    pub const TEXTURE_WRAP_T: GLenum = 10243;
    pub const TIMEOUT_EXPIRED: GLenum = 37147;
    pub const TIMEOUT_IGNORED: GLint64 = -1;
    pub const TRANSFORM_FEEDBACK: GLenum = 36386;
    pub const TRANSFORM_FEEDBACK_ACTIVE: GLenum = 36388;
    pub const TRANSFORM_FEEDBACK_BINDING: GLenum = 36389;
    pub const TRANSFORM_FEEDBACK_BUFFER: GLenum = 35982;
    pub const TRANSFORM_FEEDBACK_BUFFER_BINDING: GLenum = 35983;
    pub const TRANSFORM_FEEDBACK_BUFFER_MODE: GLenum = 35967;
    pub const TRANSFORM_FEEDBACK_BUFFER_SIZE: GLenum = 35973;
    pub const TRANSFORM_FEEDBACK_BUFFER_START: GLenum = 35972;
    pub const TRANSFORM_FEEDBACK_PAUSED: GLenum = 36387;
    pub const TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: GLenum = 35976;
    pub const TRANSFORM_FEEDBACK_VARYINGS: GLenum = 35971;
    pub const TRIANGLES: GLenum = 4;
    pub const TRIANGLE_FAN: GLenum = 6;
    pub const TRIANGLE_STRIP: GLenum = 5;
    pub const UNIFORM_ARRAY_STRIDE: GLenum = 35388;
    pub const UNIFORM_BLOCK_ACTIVE_UNIFORMS: GLenum = 35394;
    pub const UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES: GLenum = 35395;
    pub const UNIFORM_BLOCK_BINDING: GLenum = 35391;
    pub const UNIFORM_BLOCK_DATA_SIZE: GLenum = 35392;
    pub const UNIFORM_BLOCK_INDEX: GLenum = 35386;
    pub const UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER: GLenum = 35398;
    pub const UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER: GLenum = 35396;
    pub const UNIFORM_BUFFER: GLenum = 35345;
    pub const UNIFORM_BUFFER_BINDING: GLenum = 35368;
    pub const UNIFORM_BUFFER_OFFSET_ALIGNMENT: GLenum = 35380;
    pub const UNIFORM_BUFFER_SIZE: GLenum = 35370;
    pub const UNIFORM_BUFFER_START: GLenum = 35369;
    pub const UNIFORM_IS_ROW_MAJOR: GLenum = 35390;
    pub const UNIFORM_MATRIX_STRIDE: GLenum = 35389;
    pub const UNIFORM_OFFSET: GLenum = 35387;
    pub const UNIFORM_SIZE: GLenum = 35384;
    pub const UNIFORM_TYPE: GLenum = 35383;
    pub const UNPACK_ALIGNMENT: GLenum = 3317;
    pub const UNPACK_COLORSPACE_CONVERSION_WEBGL: GLenum = 37443;
    pub const UNPACK_FLIP_Y_WEBGL: GLenum = 37440;
    pub const UNPACK_IMAGE_HEIGHT: GLenum = 32878;
    pub const UNPACK_PREMULTIPLY_ALPHA_WEBGL: GLenum = 37441;
    pub const UNPACK_ROW_LENGTH: GLenum = 3314;
    pub const UNPACK_SKIP_IMAGES: GLenum = 32877;
    pub const UNPACK_SKIP_PIXELS: GLenum = 3316;
    pub const UNPACK_SKIP_ROWS: GLenum = 3315;
    pub const UNSIGNALED: GLenum = 37144;
    pub const UNSIGNED_BYTE: GLenum = 5121;
    pub const UNSIGNED_INT: GLenum = 5125;
    pub const UNSIGNED_INT_10F_11F_11F_REV: GLenum = 35899;
    pub const UNSIGNED_INT_24_8: GLenum = 34042;
    pub const UNSIGNED_INT_2_10_10_10_REV: GLenum = 33640;
    pub const UNSIGNED_INT_5_9_9_9_REV: GLenum = 35902;
    pub const UNSIGNED_INT_SAMPLER_2D: GLenum = 36306;
    pub const UNSIGNED_INT_SAMPLER_2D_ARRAY: GLenum = 36311;
    pub const UNSIGNED_INT_SAMPLER_3D: GLenum = 36307;
    pub const UNSIGNED_INT_SAMPLER_CUBE: GLenum = 36308;
    pub const UNSIGNED_INT_VEC2: GLenum = 36294;
    pub const UNSIGNED_INT_VEC3: GLenum = 36295;
    pub const UNSIGNED_INT_VEC4: GLenum = 36296;
    pub const UNSIGNED_NORMALIZED: GLenum = 35863;
    pub const UNSIGNED_SHORT: GLenum = 5123;
    pub const UNSIGNED_SHORT_4_4_4_4: GLenum = 32819;
    pub const UNSIGNED_SHORT_5_5_5_1: GLenum = 32820;
    pub const UNSIGNED_SHORT_5_6_5: GLenum = 33635;
    pub const VALIDATE_STATUS: GLenum = 35715;
    pub const VENDOR: GLenum = 7936;
    pub const VERSION: GLenum = 7938;
    pub const VERTEX_ARRAY_BINDING: GLenum = 34229;
    pub const VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: GLenum = 34975;
    pub const VERTEX_ATTRIB_ARRAY_DIVISOR: GLenum = 35070;
    pub const VERTEX_ATTRIB_ARRAY_ENABLED: GLenum = 34338;
    pub const VERTEX_ATTRIB_ARRAY_INTEGER: GLenum = 35069;
    pub const VERTEX_ATTRIB_ARRAY_NORMALIZED: GLenum = 34922;
    pub const VERTEX_ATTRIB_ARRAY_POINTER: GLenum = 34373;
    pub const VERTEX_ATTRIB_ARRAY_SIZE: GLenum = 34339;
    pub const VERTEX_ATTRIB_ARRAY_STRIDE: GLenum = 34340;
    pub const VERTEX_ATTRIB_ARRAY_TYPE: GLenum = 34341;
    pub const VERTEX_SHADER: GLenum = 35633;
    pub const VIEWPORT: GLenum = 2978;
    pub const WAIT_FAILED: GLenum = 37149;
    pub const ZERO: GLenum = 0;

    pub fn new<F>(loadfn: F) -> WebGL2RenderingContext where F: FnMut(&str) -> *const std::os::raw::c_void
    {
        WebGL2RenderingContext 
        {
            common: GLContext::new(loadfn),
        }
    }
}