summaryrefslogtreecommitdiff
path: root/src/lib/ector/ector_gl_internal.h
blob: eca1aeb02fc4b26b250889efaa99bc78bce3b62b (plain) (blame)
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
#ifndef ECTOR_GL_INTERNAL_H
# define ECTOR_GL_INTERNAL_H

typedef struct _Ector_GL_API Ector_GL_API;

extern Ector_GL_API GL;

// ignore everything below this point
// --------------------------------------------------

/*
Some of the remainder of this file is lifted from Khronos' public
EGL/glext headers.  The copyright notice from a recent version of the
headers is reproduced here.

Much of it is from Mesa, so their copyright is included as well.
*/

/*
** Copyright (c) 2013-2016 The Khronos Group Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and/or associated documentation files (the
** "Materials"), to deal in the Materials without restriction, including
** without limitation the rights to use, copy, modify, merge, publish,
** distribute, sublicense, and/or sell copies of the Materials, and to
** permit persons to whom the Materials are furnished to do so, subject to
** the following conditions:
**
** The above copyright notice and this permission notice shall be included
** in all copies or substantial portions of the Materials.
**
** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
*/
/*
 * Mesa 3-D graphics library
 *
 * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
 * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */



#ifdef GL_GLES
typedef intptr_t EGLAttrib;
typedef unsigned int EGLenum;
typedef void *EGLDisplay;
typedef void *EGLContext;
typedef void *EGLClientBuffer;
#define CLOWNBOAT UTTERLY
#endif

#define GL_DEPTH_BUFFER_BIT               0x00000100
#define GL_STENCIL_BUFFER_BIT             0x00000400
#define GL_COLOR_BUFFER_BIT               0x00004000

/* Boolean */
#define GL_FALSE                          0
#define GL_TRUE                           1

/* BeginMode */
#define GL_POINTS                         0x0000
#define GL_LINES                          0x0001
#define GL_LINE_LOOP                      0x0002
#define GL_LINE_STRIP                     0x0003
#define GL_TRIANGLES                      0x0004
#define GL_TRIANGLE_STRIP                 0x0005
#define GL_TRIANGLE_FAN                   0x0006

/* AlphaFunction (not supported in ES20) */
/*      GL_NEVER */
/*      GL_LESS */
/*      GL_EQUAL */
/*      GL_LEQUAL */
/*      GL_GREATER */
/*      GL_NOTEQUAL */
/*      GL_GEQUAL */
/*      GL_ALWAYS */

/* BlendingFactorDest */
#define GL_ZERO                           0
#define GL_ONE                            1
#define GL_SRC_COLOR                      0x0300
#define GL_ONE_MINUS_SRC_COLOR            0x0301
#define GL_SRC_ALPHA                      0x0302
#define GL_ONE_MINUS_SRC_ALPHA            0x0303
#define GL_DST_ALPHA                      0x0304
#define GL_ONE_MINUS_DST_ALPHA            0x0305

/* BlendingFactorSrc */
/*      GL_ZERO */
/*      GL_ONE */
#define GL_DST_COLOR                      0x0306
#define GL_ONE_MINUS_DST_COLOR            0x0307
#define GL_SRC_ALPHA_SATURATE             0x0308
/*      GL_SRC_ALPHA */
/*      GL_ONE_MINUS_SRC_ALPHA */
/*      GL_DST_ALPHA */
/*      GL_ONE_MINUS_DST_ALPHA */

/* BlendEquationSeparate */
#define GL_FUNC_ADD                       0x8006
#define GL_BLEND_EQUATION                 0x8009
#define GL_BLEND_EQUATION_RGB             0x8009    /* same as BLEND_EQUATION */
#define GL_BLEND_EQUATION_ALPHA           0x883D

/* BlendSubtract */
#define GL_FUNC_SUBTRACT                  0x800A
#define GL_FUNC_REVERSE_SUBTRACT          0x800B

/* Separate Blend Functions */
#define GL_BLEND_DST_RGB                  0x80C8
#define GL_BLEND_SRC_RGB                  0x80C9
#define GL_BLEND_DST_ALPHA                0x80CA
#define GL_BLEND_SRC_ALPHA                0x80CB
#define GL_CONSTANT_COLOR                 0x8001
#define GL_ONE_MINUS_CONSTANT_COLOR       0x8002
#define GL_CONSTANT_ALPHA                 0x8003
#define GL_ONE_MINUS_CONSTANT_ALPHA       0x8004
#define GL_BLEND_COLOR                    0x8005

/* Buffer Objects */
#define GL_ARRAY_BUFFER                   0x8892
#define GL_ELEMENT_ARRAY_BUFFER           0x8893
#define GL_ARRAY_BUFFER_BINDING           0x8894
#define GL_ELEMENT_ARRAY_BUFFER_BINDING   0x8895

#define GL_STREAM_DRAW                    0x88E0
#define GL_STATIC_DRAW                    0x88E4
#define GL_DYNAMIC_DRAW                   0x88E8

#define GL_BUFFER_SIZE                    0x8764
#define GL_BUFFER_USAGE                   0x8765

#define GL_CURRENT_VERTEX_ATTRIB          0x8626

/* CullFaceMode */
#define GL_FRONT                          0x0404
#define GL_BACK                           0x0405
#define GL_FRONT_AND_BACK                 0x0408

/* DepthFunction */
/*      GL_NEVER */
/*      GL_LESS */
/*      GL_EQUAL */
/*      GL_LEQUAL */
/*      GL_GREATER */
/*      GL_NOTEQUAL */
/*      GL_GEQUAL */
/*      GL_ALWAYS */

/* EnableCap */
#define GL_TEXTURE_2D                     0x0DE1
#define GL_CULL_FACE                      0x0B44
#define GL_BLEND                          0x0BE2
#define GL_DITHER                         0x0BD0
#define GL_STENCIL_TEST                   0x0B90
#define GL_DEPTH_TEST                     0x0B71
#define GL_SCISSOR_TEST                   0x0C11
#define GL_POLYGON_OFFSET_FILL            0x8037
#define GL_SAMPLE_ALPHA_TO_COVERAGE       0x809E
#define GL_SAMPLE_COVERAGE                0x80A0

/* ErrorCode */
#define GL_NO_ERROR                       0
#define GL_INVALID_ENUM                   0x0500
#define GL_INVALID_VALUE                  0x0501
#define GL_INVALID_OPERATION              0x0502
#define GL_OUT_OF_MEMORY                  0x0505

/* FrontFaceDirection */
#define GL_CW                             0x0900
#define GL_CCW                            0x0901

/* GetPName */
#define GL_LINE_WIDTH                     0x0B21
#define GL_ALIASED_POINT_SIZE_RANGE       0x846D
#define GL_ALIASED_LINE_WIDTH_RANGE       0x846E
#define GL_CULL_FACE_MODE                 0x0B45
#define GL_FRONT_FACE                     0x0B46
#define GL_DEPTH_RANGE                    0x0B70
#define GL_DEPTH_WRITEMASK                0x0B72
#define GL_DEPTH_CLEAR_VALUE              0x0B73
#define GL_DEPTH_FUNC                     0x0B74
#define GL_STENCIL_CLEAR_VALUE            0x0B91
#define GL_STENCIL_FUNC                   0x0B92
#define GL_STENCIL_FAIL                   0x0B94
#define GL_STENCIL_PASS_DEPTH_FAIL        0x0B95
#define GL_STENCIL_PASS_DEPTH_PASS        0x0B96
#define GL_STENCIL_REF                    0x0B97
#define GL_STENCIL_VALUE_MASK             0x0B93
#define GL_STENCIL_WRITEMASK              0x0B98
#define GL_STENCIL_BACK_FUNC              0x8800
#define GL_STENCIL_BACK_FAIL              0x8801
#define GL_STENCIL_BACK_PASS_DEPTH_FAIL   0x8802
#define GL_STENCIL_BACK_PASS_DEPTH_PASS   0x8803
#define GL_STENCIL_BACK_REF               0x8CA3
#define GL_STENCIL_BACK_VALUE_MASK        0x8CA4
#define GL_STENCIL_BACK_WRITEMASK         0x8CA5
#define GL_VIEWPORT                       0x0BA2
#define GL_SCISSOR_BOX                    0x0C10
/*      GL_SCISSOR_TEST */
#define GL_COLOR_CLEAR_VALUE              0x0C22
#define GL_COLOR_WRITEMASK                0x0C23
#define GL_UNPACK_ALIGNMENT               0x0CF5
#define GL_PACK_ALIGNMENT                 0x0D05
#define GL_MAX_TEXTURE_SIZE               0x0D33
#define GL_MAX_VIEWPORT_DIMS              0x0D3A
#define GL_SUBPIXEL_BITS                  0x0D50
#define GL_RED_BITS                       0x0D52
#define GL_GREEN_BITS                     0x0D53
#define GL_BLUE_BITS                      0x0D54
#define GL_ALPHA_BITS                     0x0D55
#define GL_DEPTH_BITS                     0x0D56
#define GL_STENCIL_BITS                   0x0D57
#define GL_POLYGON_OFFSET_UNITS           0x2A00
/*      GL_POLYGON_OFFSET_FILL */
#define GL_POLYGON_OFFSET_FACTOR          0x8038
#define GL_TEXTURE_BINDING_2D             0x8069
#define GL_SAMPLE_BUFFERS                 0x80A8
#define GL_SAMPLES                        0x80A9
#define GL_SAMPLE_COVERAGE_VALUE          0x80AA
#define GL_SAMPLE_COVERAGE_INVERT         0x80AB

/* GetTextureParameter */
/*      GL_TEXTURE_MAG_FILTER */
/*      GL_TEXTURE_MIN_FILTER */
/*      GL_TEXTURE_WRAP_S */
/*      GL_TEXTURE_WRAP_T */

#define GL_NUM_COMPRESSED_TEXTURE_FORMATS 0x86A2
#define GL_COMPRESSED_TEXTURE_FORMATS     0x86A3

/* HintMode */
#define GL_DONT_CARE                      0x1100
#define GL_FASTEST                        0x1101
#define GL_NICEST                         0x1102

/* HintTarget */
#define GL_GENERATE_MIPMAP_HINT            0x8192

/* DataType */
#define GL_BYTE                           0x1400
#define GL_UNSIGNED_BYTE                  0x1401
#define GL_SHORT                          0x1402
#define GL_UNSIGNED_SHORT                 0x1403
#define GL_INT                            0x1404
#define GL_UNSIGNED_INT                   0x1405
#define GL_FLOAT                          0x1406
#define GL_FIXED                          0x140C

/* PixelFormat */
#define GL_DEPTH_COMPONENT                0x1902
#define GL_ALPHA                          0x1906
#define GL_RGB                            0x1907
#define GL_RGBA                           0x1908
#define GL_LUMINANCE                      0x1909
#define GL_LUMINANCE_ALPHA                0x190A

/* PixelType */
/*      GL_UNSIGNED_BYTE */
#define GL_UNSIGNED_SHORT_4_4_4_4         0x8033
#define GL_UNSIGNED_SHORT_5_5_5_1         0x8034
#define GL_UNSIGNED_SHORT_5_6_5           0x8363

/* Shaders */
#define GL_FRAGMENT_SHADER                  0x8B30
#define GL_VERTEX_SHADER                    0x8B31
#define GL_MAX_VERTEX_ATTRIBS               0x8869
#define GL_MAX_VERTEX_UNIFORM_VECTORS       0x8DFB
#define GL_MAX_VARYING_VECTORS              0x8DFC
#define GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS 0x8B4D
#define GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS   0x8B4C
#define GL_MAX_TEXTURE_IMAGE_UNITS          0x8872
#define GL_MAX_FRAGMENT_UNIFORM_VECTORS     0x8DFD
#define GL_SHADER_TYPE                      0x8B4F
#define GL_DELETE_STATUS                    0x8B80
#define GL_LINK_STATUS                      0x8B82
#define GL_VALIDATE_STATUS                  0x8B83
#define GL_ATTACHED_SHADERS                 0x8B85
#define GL_ACTIVE_UNIFORMS                  0x8B86
#define GL_ACTIVE_UNIFORM_MAX_LENGTH        0x8B87
#define GL_ACTIVE_ATTRIBUTES                0x8B89
#define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH      0x8B8A
#define GL_SHADING_LANGUAGE_VERSION         0x8B8C
#define GL_CURRENT_PROGRAM                  0x8B8D

/* StencilFunction */
#define GL_NEVER                          0x0200
#define GL_LESS                           0x0201
#define GL_EQUAL                          0x0202
#define GL_LEQUAL                         0x0203
#define GL_GREATER                        0x0204
#define GL_NOTEQUAL                       0x0205
#define GL_GEQUAL                         0x0206
#define GL_ALWAYS                         0x0207

/* StencilOp */
/*      GL_ZERO */
#define GL_KEEP                           0x1E00
#define GL_REPLACE                        0x1E01
#define GL_INCR                           0x1E02
#define GL_DECR                           0x1E03
#define GL_INVERT                         0x150A
#define GL_INCR_WRAP                      0x8507
#define GL_DECR_WRAP                      0x8508

/* StringName */
#define GL_VENDOR                         0x1F00
#define GL_RENDERER                       0x1F01
#define GL_VERSION                        0x1F02
#define GL_EXTENSIONS                     0x1F03

/* TextureMagFilter */
#define GL_NEAREST                        0x2600
#define GL_LINEAR                         0x2601

/* TextureMinFilter */
/*      GL_NEAREST */
/*      GL_LINEAR */
#define GL_NEAREST_MIPMAP_NEAREST         0x2700
#define GL_LINEAR_MIPMAP_NEAREST          0x2701
#define GL_NEAREST_MIPMAP_LINEAR          0x2702
#define GL_LINEAR_MIPMAP_LINEAR           0x2703

/* TextureParameterName */
#define GL_TEXTURE_MAG_FILTER             0x2800
#define GL_TEXTURE_MIN_FILTER             0x2801
#define GL_TEXTURE_WRAP_S                 0x2802
#define GL_TEXTURE_WRAP_T                 0x2803

/* TextureTarget */
/*      GL_TEXTURE_2D */
#define GL_TEXTURE                        0x1702

#define GL_TEXTURE_CUBE_MAP               0x8513
#define GL_TEXTURE_BINDING_CUBE_MAP       0x8514
#define GL_TEXTURE_CUBE_MAP_POSITIVE_X    0x8515
#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X    0x8516
#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y    0x8517
#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y    0x8518
#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z    0x8519
#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z    0x851A
#define GL_MAX_CUBE_MAP_TEXTURE_SIZE      0x851C

/* TextureUnit */
#define GL_TEXTURE0                       0x84C0
#define GL_TEXTURE1                       0x84C1
#define GL_TEXTURE2                       0x84C2
#define GL_TEXTURE3                       0x84C3
#define GL_TEXTURE4                       0x84C4
#define GL_TEXTURE5                       0x84C5
#define GL_TEXTURE6                       0x84C6
#define GL_TEXTURE7                       0x84C7
#define GL_TEXTURE8                       0x84C8
#define GL_TEXTURE9                       0x84C9
#define GL_TEXTURE10                      0x84CA
#define GL_TEXTURE11                      0x84CB
#define GL_TEXTURE12                      0x84CC
#define GL_TEXTURE13                      0x84CD
#define GL_TEXTURE14                      0x84CE
#define GL_TEXTURE15                      0x84CF
#define GL_TEXTURE16                      0x84D0
#define GL_TEXTURE17                      0x84D1
#define GL_TEXTURE18                      0x84D2
#define GL_TEXTURE19                      0x84D3
#define GL_TEXTURE20                      0x84D4
#define GL_TEXTURE21                      0x84D5
#define GL_TEXTURE22                      0x84D6
#define GL_TEXTURE23                      0x84D7
#define GL_TEXTURE24                      0x84D8
#define GL_TEXTURE25                      0x84D9
#define GL_TEXTURE26                      0x84DA
#define GL_TEXTURE27                      0x84DB
#define GL_TEXTURE28                      0x84DC
#define GL_TEXTURE29                      0x84DD
#define GL_TEXTURE30                      0x84DE
#define GL_TEXTURE31                      0x84DF
#define GL_ACTIVE_TEXTURE                 0x84E0

/* TextureWrapMode */
#define GL_REPEAT                         0x2901
#define GL_CLAMP_TO_EDGE                  0x812F
#define GL_MIRRORED_REPEAT                0x8370

/* Uniform Types */
#define GL_FLOAT_VEC2                     0x8B50
#define GL_FLOAT_VEC3                     0x8B51
#define GL_FLOAT_VEC4                     0x8B52
#define GL_INT_VEC2                       0x8B53
#define GL_INT_VEC3                       0x8B54
#define GL_INT_VEC4                       0x8B55
#define GL_BOOL                           0x8B56
#define GL_BOOL_VEC2                      0x8B57
#define GL_BOOL_VEC3                      0x8B58
#define GL_BOOL_VEC4                      0x8B59
#define GL_FLOAT_MAT2                     0x8B5A
#define GL_FLOAT_MAT3                     0x8B5B
#define GL_FLOAT_MAT4                     0x8B5C
#define GL_SAMPLER_2D                     0x8B5E
#define GL_SAMPLER_CUBE                   0x8B60

/* Vertex Arrays */
#define GL_VERTEX_ATTRIB_ARRAY_ENABLED        0x8622
#define GL_VERTEX_ATTRIB_ARRAY_SIZE           0x8623
#define GL_VERTEX_ATTRIB_ARRAY_STRIDE         0x8624
#define GL_VERTEX_ATTRIB_ARRAY_TYPE           0x8625
#define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED     0x886A
#define GL_VERTEX_ATTRIB_ARRAY_POINTER        0x8645
#define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING 0x889F

/* Read Format */
#define GL_IMPLEMENTATION_COLOR_READ_TYPE   0x8B9A
#define GL_IMPLEMENTATION_COLOR_READ_FORMAT 0x8B9B

/* Shader Source */
#define GL_COMPILE_STATUS                 0x8B81
#define GL_INFO_LOG_LENGTH                0x8B84
#define GL_SHADER_SOURCE_LENGTH           0x8B88
#define GL_SHADER_COMPILER                0x8DFA

/* Shader Binary */
#define GL_SHADER_BINARY_FORMATS          0x8DF8
#define GL_NUM_SHADER_BINARY_FORMATS      0x8DF9

/* Shader Precision-Specified Types */
#define GL_LOW_FLOAT                      0x8DF0
#define GL_MEDIUM_FLOAT                   0x8DF1
#define GL_HIGH_FLOAT                     0x8DF2
#define GL_LOW_INT                        0x8DF3
#define GL_MEDIUM_INT                     0x8DF4
#define GL_HIGH_INT                       0x8DF5

/* Framebuffer Object. */
#define GL_FRAMEBUFFER                    0x8D40
#define GL_RENDERBUFFER                   0x8D41

#define GL_RGBA4                          0x8056
#define GL_RGB5_A1                        0x8057
#define GL_RGB565                         0x8D62
#define GL_DEPTH_COMPONENT16              0x81A5
#define GL_STENCIL_INDEX                  0x1901
#define GL_STENCIL_INDEX8                 0x8D48

#define GL_RENDERBUFFER_WIDTH             0x8D42
#define GL_RENDERBUFFER_HEIGHT            0x8D43
#define GL_RENDERBUFFER_INTERNAL_FORMAT   0x8D44
#define GL_RENDERBUFFER_RED_SIZE          0x8D50
#define GL_RENDERBUFFER_GREEN_SIZE        0x8D51
#define GL_RENDERBUFFER_BLUE_SIZE         0x8D52
#define GL_RENDERBUFFER_ALPHA_SIZE        0x8D53
#define GL_RENDERBUFFER_DEPTH_SIZE        0x8D54
#define GL_RENDERBUFFER_STENCIL_SIZE      0x8D55

#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE           0x8CD0
#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME           0x8CD1
#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL         0x8CD2
#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE 0x8CD3

#define GL_COLOR_ATTACHMENT0              0x8CE0
#define GL_DEPTH_ATTACHMENT               0x8D00
#define GL_STENCIL_ATTACHMENT             0x8D20

#define GL_NONE                           0

#define GL_FRAMEBUFFER_COMPLETE                      0x8CD5
#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT         0x8CD6
#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7
#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS         0x8CD9
#define GL_FRAMEBUFFER_UNSUPPORTED                   0x8CDD

#define GL_FRAMEBUFFER_BINDING            0x8CA6
#define GL_RENDERBUFFER_BINDING           0x8CA7
#define GL_MAX_RENDERBUFFER_SIZE          0x84E8

#define GL_INVALID_FRAMEBUFFER_OPERATION  0x0506

#define GL_BGRA_EXT                       0x80E1

#ifndef GL_OES_get_program_binary
#define GL_OES_get_program_binary 1
#define GL_PROGRAM_BINARY_LENGTH_OES      0x8741
#define GL_NUM_PROGRAM_BINARY_FORMATS_OES 0x87FE
#define GL_PROGRAM_BINARY_FORMATS_OES     0x87FF
#endif /* GL_OES_get_program_binary */

/* OpenGLES 3.0 */
#ifndef __gl3_h_
# define __gl3_h_ 1


#define GL_READ_BUFFER                    0x0C02
#define GL_UNPACK_ROW_LENGTH              0x0CF2
#define GL_UNPACK_SKIP_ROWS               0x0CF3
#define GL_UNPACK_SKIP_PIXELS             0x0CF4
#define GL_PACK_ROW_LENGTH                0x0D02
#define GL_PACK_SKIP_ROWS                 0x0D03
#define GL_PACK_SKIP_PIXELS               0x0D04
#define GL_COLOR                          0x1800
#define GL_DEPTH                          0x1801
#define GL_STENCIL                        0x1802
#define GL_RED                            0x1903
#define GL_RGB8                           0x8051
#define GL_RGBA8                          0x8058
#define GL_RGB10_A2                       0x8059
#define GL_TEXTURE_BINDING_3D             0x806A
#define GL_UNPACK_SKIP_IMAGES             0x806D
#define GL_UNPACK_IMAGE_HEIGHT            0x806E
#define GL_TEXTURE_3D                     0x806F
#define GL_TEXTURE_WRAP_R                 0x8072
#define GL_MAX_3D_TEXTURE_SIZE            0x8073
#define GL_UNSIGNED_INT_2_10_10_10_REV    0x8368
#define GL_MAX_ELEMENTS_VERTICES          0x80E8
#define GL_MAX_ELEMENTS_INDICES           0x80E9
#define GL_TEXTURE_MIN_LOD                0x813A
#define GL_TEXTURE_MAX_LOD                0x813B
#define GL_TEXTURE_BASE_LEVEL             0x813C
#define GL_TEXTURE_MAX_LEVEL              0x813D
#define GL_MIN                            0x8007
#define GL_MAX                            0x8008
#define GL_DEPTH_COMPONENT24              0x81A6
#define GL_MAX_TEXTURE_LOD_BIAS           0x84FD
#define GL_TEXTURE_COMPARE_MODE           0x884C
#define GL_TEXTURE_COMPARE_FUNC           0x884D
#define GL_CURRENT_QUERY                  0x8865
#define GL_QUERY_RESULT                   0x8866
#define GL_QUERY_RESULT_AVAILABLE         0x8867
#define GL_BUFFER_MAPPED                  0x88BC
#define GL_BUFFER_MAP_POINTER             0x88BD
#define GL_STREAM_READ                    0x88E1
#define GL_STREAM_COPY                    0x88E2
#define GL_STATIC_READ                    0x88E5
#define GL_STATIC_COPY                    0x88E6
#define GL_DYNAMIC_READ                   0x88E9
#define GL_DYNAMIC_COPY                   0x88EA
#define GL_MAX_DRAW_BUFFERS               0x8824
#define GL_DRAW_BUFFER0                   0x8825
#define GL_DRAW_BUFFER1                   0x8826
#define GL_DRAW_BUFFER2                   0x8827
#define GL_DRAW_BUFFER3                   0x8828
#define GL_DRAW_BUFFER4                   0x8829
#define GL_DRAW_BUFFER5                   0x882A
#define GL_DRAW_BUFFER6                   0x882B
#define GL_DRAW_BUFFER7                   0x882C
#define GL_DRAW_BUFFER8                   0x882D
#define GL_DRAW_BUFFER9                   0x882E
#define GL_DRAW_BUFFER10                  0x882F
#define GL_DRAW_BUFFER11                  0x8830
#define GL_DRAW_BUFFER12                  0x8831
#define GL_DRAW_BUFFER13                  0x8832
#define GL_DRAW_BUFFER14                  0x8833
#define GL_DRAW_BUFFER15                  0x8834
#define GL_MAX_FRAGMENT_UNIFORM_COMPONENTS 0x8B49
#define GL_MAX_VERTEX_UNIFORM_COMPONENTS  0x8B4A
#define GL_SAMPLER_3D                     0x8B5F
#define GL_SAMPLER_2D_SHADOW              0x8B62
#define GL_FRAGMENT_SHADER_DERIVATIVE_HINT 0x8B8B
#define GL_PIXEL_PACK_BUFFER              0x88EB
#define GL_PIXEL_UNPACK_BUFFER            0x88EC
#define GL_PIXEL_PACK_BUFFER_BINDING      0x88ED
#define GL_PIXEL_UNPACK_BUFFER_BINDING    0x88EF
#define GL_FLOAT_MAT2x3                   0x8B65
#define GL_FLOAT_MAT2x4                   0x8B66
#define GL_FLOAT_MAT3x2                   0x8B67
#define GL_FLOAT_MAT3x4                   0x8B68
#define GL_FLOAT_MAT4x2                   0x8B69
#define GL_FLOAT_MAT4x3                   0x8B6A
#define GL_SRGB                           0x8C40
#define GL_SRGB8                          0x8C41
#define GL_SRGB8_ALPHA8                   0x8C43
#define GL_COMPARE_REF_TO_TEXTURE         0x884E
#define GL_MAJOR_VERSION                  0x821B
#define GL_MINOR_VERSION                  0x821C
#define GL_NUM_EXTENSIONS                 0x821D
#define GL_RGBA32F                        0x8814
#define GL_RGB32F                         0x8815
#define GL_RGBA16F                        0x881A
#define GL_RGB16F                         0x881B
#define GL_VERTEX_ATTRIB_ARRAY_INTEGER    0x88FD
#define GL_MAX_ARRAY_TEXTURE_LAYERS       0x88FF
#define GL_MIN_PROGRAM_TEXEL_OFFSET       0x8904
#define GL_MAX_PROGRAM_TEXEL_OFFSET       0x8905
#define GL_MAX_VARYING_COMPONENTS         0x8B4B
#define GL_TEXTURE_2D_ARRAY               0x8C1A
#define GL_TEXTURE_BINDING_2D_ARRAY       0x8C1D
#define GL_R11F_G11F_B10F                 0x8C3A
#define GL_UNSIGNED_INT_10F_11F_11F_REV   0x8C3B
#define GL_RGB9_E5                        0x8C3D
#define GL_UNSIGNED_INT_5_9_9_9_REV       0x8C3E
#define GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH 0x8C76
#define GL_TRANSFORM_FEEDBACK_BUFFER_MODE 0x8C7F
#define GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS 0x8C80
#define GL_TRANSFORM_FEEDBACK_VARYINGS    0x8C83
#define GL_TRANSFORM_FEEDBACK_BUFFER_START 0x8C84
#define GL_TRANSFORM_FEEDBACK_BUFFER_SIZE 0x8C85
#define GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN 0x8C88
#define GL_RASTERIZER_DISCARD             0x8C89
#define GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS 0x8C8A
#define GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS 0x8C8B
#define GL_INTERLEAVED_ATTRIBS            0x8C8C
#define GL_SEPARATE_ATTRIBS               0x8C8D
#define GL_TRANSFORM_FEEDBACK_BUFFER      0x8C8E
#define GL_TRANSFORM_FEEDBACK_BUFFER_BINDING 0x8C8F
#define GL_RGBA32UI                       0x8D70
#define GL_RGB32UI                        0x8D71
#define GL_RGBA16UI                       0x8D76
#define GL_RGB16UI                        0x8D77
#define GL_RGBA8UI                        0x8D7C
#define GL_RGB8UI                         0x8D7D
#define GL_RGBA32I                        0x8D82
#define GL_RGB32I                         0x8D83
#define GL_RGBA16I                        0x8D88
#define GL_RGB16I                         0x8D89
#define GL_RGBA8I                         0x8D8E
#define GL_RGB8I                          0x8D8F
#define GL_RED_INTEGER                    0x8D94
#define GL_RGB_INTEGER                    0x8D98
#define GL_RGBA_INTEGER                   0x8D99
#define GL_SAMPLER_2D_ARRAY               0x8DC1
#define GL_SAMPLER_2D_ARRAY_SHADOW        0x8DC4
#define GL_SAMPLER_CUBE_SHADOW            0x8DC5
#define GL_UNSIGNED_INT_VEC2              0x8DC6
#define GL_UNSIGNED_INT_VEC3              0x8DC7
#define GL_UNSIGNED_INT_VEC4              0x8DC8
#define GL_INT_SAMPLER_2D                 0x8DCA
#define GL_INT_SAMPLER_3D                 0x8DCB
#define GL_INT_SAMPLER_CUBE               0x8DCC
#define GL_INT_SAMPLER_2D_ARRAY           0x8DCF
#define GL_UNSIGNED_INT_SAMPLER_2D        0x8DD2
#define GL_UNSIGNED_INT_SAMPLER_3D        0x8DD3
#define GL_UNSIGNED_INT_SAMPLER_CUBE      0x8DD4
#define GL_UNSIGNED_INT_SAMPLER_2D_ARRAY  0x8DD7
#define GL_BUFFER_ACCESS_FLAGS            0x911F
#define GL_BUFFER_MAP_LENGTH              0x9120
#define GL_BUFFER_MAP_OFFSET              0x9121
#define GL_DEPTH_COMPONENT32F             0x8CAC
#define GL_DEPTH32F_STENCIL8              0x8CAD
#define GL_FLOAT_32_UNSIGNED_INT_24_8_REV 0x8DAD
#define GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING 0x8210
#define GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE 0x8211
#define GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE 0x8212
#define GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE 0x8213
#define GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE 0x8214
#define GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE 0x8215
#define GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE 0x8216
#define GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE 0x8217
#define GL_FRAMEBUFFER_DEFAULT            0x8218
#define GL_FRAMEBUFFER_UNDEFINED          0x8219
#define GL_DEPTH_STENCIL_ATTACHMENT       0x821A
#define GL_DEPTH_STENCIL                  0x84F9
#define GL_UNSIGNED_INT_24_8              0x84FA
#define GL_DEPTH24_STENCIL8               0x88F0
#define GL_UNSIGNED_NORMALIZED            0x8C17
#define GL_DRAW_FRAMEBUFFER_BINDING       0x8CA6
#define GL_READ_FRAMEBUFFER               0x8CA8
#define GL_DRAW_FRAMEBUFFER               0x8CA9
#define GL_READ_FRAMEBUFFER_BINDING       0x8CAA
#define GL_RENDERBUFFER_SAMPLES           0x8CAB
#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER 0x8CD4
#define GL_MAX_COLOR_ATTACHMENTS          0x8CDF
#define GL_COLOR_ATTACHMENT1              0x8CE1
#define GL_COLOR_ATTACHMENT2              0x8CE2
#define GL_COLOR_ATTACHMENT3              0x8CE3
#define GL_COLOR_ATTACHMENT4              0x8CE4
#define GL_COLOR_ATTACHMENT5              0x8CE5
#define GL_COLOR_ATTACHMENT6              0x8CE6
#define GL_COLOR_ATTACHMENT7              0x8CE7
#define GL_COLOR_ATTACHMENT8              0x8CE8
#define GL_COLOR_ATTACHMENT9              0x8CE9
#define GL_COLOR_ATTACHMENT10             0x8CEA
#define GL_COLOR_ATTACHMENT11             0x8CEB
#define GL_COLOR_ATTACHMENT12             0x8CEC
#define GL_COLOR_ATTACHMENT13             0x8CED
#define GL_COLOR_ATTACHMENT14             0x8CEE
#define GL_COLOR_ATTACHMENT15             0x8CEF
#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE 0x8D56
#define GL_MAX_SAMPLES                    0x8D57
#define GL_HALF_FLOAT                     0x140B
#define GL_MAP_READ_BIT                   0x0001
#define GL_MAP_WRITE_BIT                  0x0002
#define GL_MAP_INVALIDATE_RANGE_BIT       0x0004
#define GL_MAP_INVALIDATE_BUFFER_BIT      0x0008
#define GL_MAP_FLUSH_EXPLICIT_BIT         0x0010
#define GL_MAP_UNSYNCHRONIZED_BIT         0x0020
#define GL_RG                             0x8227
#define GL_RG_INTEGER                     0x8228
#define GL_R8                             0x8229
#define GL_RG8                            0x822B
#define GL_R16F                           0x822D
#define GL_R32F                           0x822E
#define GL_RG16F                          0x822F
#define GL_RG32F                          0x8230
#define GL_R8I                            0x8231
#define GL_R8UI                           0x8232
#define GL_R16I                           0x8233
#define GL_R16UI                          0x8234
#define GL_R32I                           0x8235
#define GL_R32UI                          0x8236
#define GL_RG8I                           0x8237
#define GL_RG8UI                          0x8238
#define GL_RG16I                          0x8239
#define GL_RG16UI                         0x823A
#define GL_RG32I                          0x823B
#define GL_RG32UI                         0x823C
#define GL_VERTEX_ARRAY_BINDING           0x85B5
#define GL_R8_SNORM                       0x8F94
#define GL_RG8_SNORM                      0x8F95
#define GL_RGB8_SNORM                     0x8F96
#define GL_RGBA8_SNORM                    0x8F97
#define GL_SIGNED_NORMALIZED              0x8F9C
#define GL_PRIMITIVE_RESTART_FIXED_INDEX  0x8D69
#define GL_COPY_READ_BUFFER               0x8F36
#define GL_COPY_WRITE_BUFFER              0x8F37
#define GL_COPY_READ_BUFFER_BINDING       0x8F36
#define GL_COPY_WRITE_BUFFER_BINDING      0x8F37
#define GL_UNIFORM_BUFFER                 0x8A11
#define GL_UNIFORM_BUFFER_BINDING         0x8A28
#define GL_UNIFORM_BUFFER_START           0x8A29
#define GL_UNIFORM_BUFFER_SIZE            0x8A2A
#define GL_MAX_VERTEX_UNIFORM_BLOCKS      0x8A2B
#define GL_MAX_FRAGMENT_UNIFORM_BLOCKS    0x8A2D
#define GL_MAX_COMBINED_UNIFORM_BLOCKS    0x8A2E
#define GL_MAX_UNIFORM_BUFFER_BINDINGS    0x8A2F
#define GL_MAX_UNIFORM_BLOCK_SIZE         0x8A30
#define GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS 0x8A31
#define GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS 0x8A33
#define GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT 0x8A34
#define GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH 0x8A35
#define GL_ACTIVE_UNIFORM_BLOCKS          0x8A36
#define GL_UNIFORM_TYPE                   0x8A37
#define GL_UNIFORM_SIZE                   0x8A38
#define GL_UNIFORM_NAME_LENGTH            0x8A39
#define GL_UNIFORM_BLOCK_INDEX            0x8A3A
#define GL_UNIFORM_OFFSET                 0x8A3B
#define GL_UNIFORM_ARRAY_STRIDE           0x8A3C
#define GL_UNIFORM_MATRIX_STRIDE          0x8A3D
#define GL_UNIFORM_IS_ROW_MAJOR           0x8A3E
#define GL_UNIFORM_BLOCK_BINDING          0x8A3F
#define GL_UNIFORM_BLOCK_DATA_SIZE        0x8A40
#define GL_UNIFORM_BLOCK_NAME_LENGTH      0x8A41
#define GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS  0x8A42
#define GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES 0x8A43
#define GL_UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER 0x8A44
#define GL_UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER 0x8A46
#define GL_INVALID_INDEX                  0xFFFFFFFFu
#define GL_MAX_VERTEX_OUTPUT_COMPONENTS   0x9122
#define GL_MAX_FRAGMENT_INPUT_COMPONENTS  0x9125
#define GL_MAX_SERVER_WAIT_TIMEOUT        0x9111
#define GL_OBJECT_TYPE                    0x9112
#define GL_SYNC_CONDITION                 0x9113
#define GL_SYNC_STATUS                    0x9114
#define GL_SYNC_FLAGS                     0x9115
#define GL_SYNC_FENCE                     0x9116
#define GL_SYNC_GPU_COMMANDS_COMPLETE     0x9117
#define GL_UNSIGNALED                     0x9118
#define GL_SIGNALED                       0x9119
#define GL_ALREADY_SIGNALED               0x911A
#define GL_TIMEOUT_EXPIRED                0x911B
#define GL_CONDITION_SATISFIED            0x911C
#define GL_WAIT_FAILED                    0x911D
#define GL_SYNC_FLUSH_COMMANDS_BIT        0x00000001
#define GL_TIMEOUT_IGNORED                0xFFFFFFFFFFFFFFFFull
#define GL_VERTEX_ATTRIB_ARRAY_DIVISOR    0x88FE
#define GL_ANY_SAMPLES_PASSED             0x8C2F
#define GL_ANY_SAMPLES_PASSED_CONSERVATIVE 0x8D6A
#define GL_SAMPLER_BINDING                0x8919
#define GL_RGB10_A2UI                     0x906F
#define GL_TEXTURE_SWIZZLE_R              0x8E42
#define GL_TEXTURE_SWIZZLE_G              0x8E43
#define GL_TEXTURE_SWIZZLE_B              0x8E44
#define GL_TEXTURE_SWIZZLE_A              0x8E45
#define GL_GREEN                          0x1904
#define GL_BLUE                           0x1905
#define GL_INT_2_10_10_10_REV             0x8D9F
#define GL_TRANSFORM_FEEDBACK             0x8E22
#define GL_TRANSFORM_FEEDBACK_PAUSED      0x8E23
#define GL_TRANSFORM_FEEDBACK_ACTIVE      0x8E24
#define GL_TRANSFORM_FEEDBACK_BINDING     0x8E25
#define GL_PROGRAM_BINARY_RETRIEVABLE_HINT 0x8257
#define GL_PROGRAM_BINARY_LENGTH          0x8741
#define GL_NUM_PROGRAM_BINARY_FORMATS     0x87FE
#define GL_PROGRAM_BINARY_FORMATS         0x87FF
#define GL_COMPRESSED_R11_EAC             0x9270
#define GL_COMPRESSED_SIGNED_R11_EAC      0x9271
#define GL_COMPRESSED_RG11_EAC            0x9272
#define GL_COMPRESSED_SIGNED_RG11_EAC     0x9273
#define GL_COMPRESSED_RGB8_ETC2           0x9274
#define GL_COMPRESSED_SRGB8_ETC2          0x9275
#define GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 0x9276
#define GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 0x9277
#define GL_COMPRESSED_RGBA8_ETC2_EAC      0x9278
#define GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC 0x9279
#define GL_TEXTURE_IMMUTABLE_FORMAT       0x912F
#define GL_MAX_ELEMENT_INDEX              0x8D6B
#define GL_NUM_SAMPLE_COUNTS              0x9380
#define GL_TEXTURE_IMMUTABLE_LEVELS       0x82DF

#endif

#include <stddef.h>

typedef ptrdiff_t GLintptr;     // Changed khronos_intptr_t
typedef ptrdiff_t GLsizeiptr;   // Changed khronos_ssize_t

typedef void             GLvoid;
typedef char             GLchar;
typedef unsigned int     GLenum;
typedef unsigned char    GLboolean;
typedef unsigned int     GLbitfield;
typedef signed char      GLbyte;       // Changed khronos_int8_t
typedef short            GLshort;
typedef int              GLint;
typedef int              GLsizei;
typedef unsigned char    GLubyte;      // Changed khronos_uint8_t
typedef unsigned short   GLushort;
typedef unsigned int     GLuint;
typedef float            GLfloat;      // Changed khronos_float_t
typedef float            GLclampf;     // Changed khronos_float_t
typedef signed int       GLfixed;      // Changed khronos_int32_t

struct _Ector_GL_API {
   // Struct is same as Evas_GL_API version 1 without extensions

   int            init;

   void         (*glActiveTexture) (GLenum texture);
   void         (*glAttachShader) (GLuint program, GLuint shader);
   void         (*glBindAttribLocation) (GLuint program, GLuint index, const char* name);
   void         (*glBindBuffer) (GLenum target, GLuint buffer);
   void         (*glBindFramebuffer) (GLenum target, GLuint framebuffer);
   void         (*glBindRenderbuffer) (GLenum target, GLuint renderbuffer);
   void         (*glBindTexture) (GLenum target, GLuint texture);
   void         (*glBlendColor) (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
   void         (*glBlendEquation) ( GLenum mode );
   void         (*glBlendEquationSeparate) (GLenum modeRGB, GLenum modeAlpha);
   void         (*glBlendFunc) (GLenum sfactor, GLenum dfactor);
   void         (*glBlendFuncSeparate) (GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
   void         (*glBufferData) (GLenum target, GLsizeiptr size, const void* data, GLenum usage);
   void         (*glBufferSubData) (GLenum target, GLintptr offset, GLsizeiptr size, const void* data);
   GLenum       (*glCheckFramebufferStatus) (GLenum target);
   void         (*glClear) (GLbitfield mask);
   void         (*glClearColor) (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
   void         (*glClearDepthf) (GLclampf depth);
   void         (*glClearStencil) (GLint s);
   void         (*glColorMask) (GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
   void         (*glCompileShader) (GLuint shader);
   void         (*glCompressedTexImage2D) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void* data);
   void         (*glCompressedTexSubImage2D) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void* data);
   void         (*glCopyTexImage2D) (GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
   void         (*glCopyTexSubImage2D) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
   GLuint       (*glCreateProgram) (void);
   GLuint       (*glCreateShader) (GLenum type);
   void         (*glCullFace) (GLenum mode);
   void         (*glDeleteBuffers) (GLsizei n, const GLuint* buffers);
   void         (*glDeleteFramebuffers) (GLsizei n, const GLuint* framebuffers);
   void         (*glDeleteProgram) (GLuint program);
   void         (*glDeleteRenderbuffers) (GLsizei n, const GLuint* renderbuffers);
   void         (*glDeleteShader) (GLuint shader);
   void         (*glDeleteTextures) (GLsizei n, const GLuint* textures);
   void         (*glDepthFunc) (GLenum func);
   void         (*glDepthMask) (GLboolean flag);
   void         (*glDepthRangef) (GLclampf zNear, GLclampf zFar);
   void         (*glDetachShader) (GLuint program, GLuint shader);
   void         (*glDisable) (GLenum cap);
   void         (*glDisableVertexAttribArray) (GLuint index);
   void         (*glDrawArrays) (GLenum mode, GLint first, GLsizei count);
   void         (*glDrawElements) (GLenum mode, GLsizei count, GLenum type, const void* indices);
   void         (*glEnable) (GLenum cap);
   void         (*glEnableVertexAttribArray) (GLuint index);
   void         (*glFinish) (void);
   void         (*glFlush) (void);
   void         (*glFramebufferRenderbuffer) (GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
   void         (*glFramebufferTexture2D) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
   void         (*glFrontFace) (GLenum mode);
   void         (*glGenBuffers) (GLsizei n, GLuint* buffers);
   void         (*glGenerateMipmap) (GLenum target);
   void         (*glGenFramebuffers) (GLsizei n, GLuint* framebuffers);
   void         (*glGenRenderbuffers) (GLsizei n, GLuint* renderbuffers);
   void         (*glGenTextures) (GLsizei n, GLuint* textures);
   void         (*glGetActiveAttrib) (GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name);
   void         (*glGetActiveUniform) (GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name);
   void         (*glGetAttachedShaders) (GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders);
   int          (*glGetAttribLocation) (GLuint program, const char* name);
   void         (*glGetBooleanv) (GLenum pname, GLboolean* params);
   void         (*glGetBufferParameteriv) (GLenum target, GLenum pname, GLint* params);
   GLenum       (*glGetError) (void);
   void         (*glGetFloatv) (GLenum pname, GLfloat* params);
   void         (*glGetFramebufferAttachmentParameteriv) (GLenum target, GLenum attachment, GLenum pname, GLint* params);
   void         (*glGetIntegerv) (GLenum pname, GLint* params);
   void         (*glGetProgramiv) (GLuint program, GLenum pname, GLint* params);
   void         (*glGetProgramInfoLog) (GLuint program, GLsizei bufsize, GLsizei* length, char* infolog);
   void         (*glGetProgramBinary) (GLuint program, GLsizei bufsize, GLsizei *length, GLenum *binaryFormat, void *binary);
   void         (*glGetRenderbufferParameteriv) (GLenum target, GLenum pname, GLint* params);
   void         (*glGetShaderiv) (GLuint shader, GLenum pname, GLint* params);
   void         (*glGetShaderInfoLog) (GLuint shader, GLsizei bufsize, GLsizei* length, char* infolog);
   void         (*glGetShaderPrecisionFormat) (GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision);
   void         (*glGetShaderSource) (GLuint shader, GLsizei bufsize, GLsizei* length, char* source);
   const GLubyte* (*glGetString) (GLenum name);
   void         (*glGetTexParameterfv) (GLenum target, GLenum pname, GLfloat* params);
   void         (*glGetTexParameteriv) (GLenum target, GLenum pname, GLint* params);
   void         (*glGetUniformfv) (GLuint program, GLint location, GLfloat* params);
   void         (*glGetUniformiv) (GLuint program, GLint location, GLint* params);
   int          (*glGetUniformLocation) (GLuint program, const char* name);
   void         (*glGetVertexAttribfv) (GLuint index, GLenum pname, GLfloat* params);
   void         (*glGetVertexAttribiv) (GLuint index, GLenum pname, GLint* params);
   void         (*glGetVertexAttribPointerv) (GLuint index, GLenum pname, void** pointer);
   void         (*glHint) (GLenum target, GLenum mode);
   GLboolean    (*glIsBuffer) (GLuint buffer);
   GLboolean    (*glIsEnabled) (GLenum cap);
   GLboolean    (*glIsFramebuffer) (GLuint framebuffer);
   GLboolean    (*glIsProgram) (GLuint program);
   GLboolean    (*glIsRenderbuffer) (GLuint renderbuffer);
   GLboolean    (*glIsShader) (GLuint shader);
   GLboolean    (*glIsTexture) (GLuint texture);
   void         (*glLineWidth) (GLfloat width);
   void         (*glLinkProgram) (GLuint program);
   void         (*glPixelStorei) (GLenum pname, GLint param);
   void         (*glPolygonOffset) (GLfloat factor, GLfloat units);
   void         (*glProgramBinary) (GLuint program, GLenum binaryFormat, const void *binary, GLsizei length);
   void         (*glProgramParameteri) (GLuint program, GLenum pname, GLint value);
   void         (*glReadPixels) (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void* pixels);
   void         (*glReleaseShaderCompiler) (void);
   void         (*glRenderbufferStorage) (GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
   void         (*glSampleCoverage) (GLclampf value, GLboolean invert);
   void         (*glScissor) (GLint x, GLint y, GLsizei width, GLsizei height);
   void         (*glShaderBinary) (GLsizei n, const GLuint* shaders, GLenum binaryformat, const void* binary, GLsizei length);
   void         (*glShaderSource) (GLuint shader, GLsizei count, const char* const * string, const GLint* length);
   void         (*glStencilFunc) (GLenum func, GLint ref, GLuint mask);
   void         (*glStencilFuncSeparate) (GLenum face, GLenum func, GLint ref, GLuint mask);
   void         (*glStencilMask) (GLuint mask);
   void         (*glStencilMaskSeparate) (GLenum face, GLuint mask);
   void         (*glStencilOp) (GLenum fail, GLenum zfail, GLenum zpass);
   void         (*glStencilOpSeparate) (GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
   void         (*glTexImage2D) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void* pixels);
   void         (*glTexParameterf) (GLenum target, GLenum pname, GLfloat param);
   void         (*glTexParameterfv) (GLenum target, GLenum pname, const GLfloat* params);
   void         (*glTexParameteri) (GLenum target, GLenum pname, GLint param);
   void         (*glTexParameteriv) (GLenum target, GLenum pname, const GLint* params);
   void         (*glTexSubImage2D) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const void* pixels);
   void         (*glUniform1f) (GLint location, GLfloat x);
   void         (*glUniform1fv) (GLint location, GLsizei count, const GLfloat* v);
   void         (*glUniform1i) (GLint location, GLint x);
   void         (*glUniform1iv) (GLint location, GLsizei count, const GLint* v);
   void         (*glUniform2f) (GLint location, GLfloat x, GLfloat y);
   void         (*glUniform2fv) (GLint location, GLsizei count, const GLfloat* v);
   void         (*glUniform2i) (GLint location, GLint x, GLint y);
   void         (*glUniform2iv) (GLint location, GLsizei count, const GLint* v);
   void         (*glUniform3f) (GLint location, GLfloat x, GLfloat y, GLfloat z);
   void         (*glUniform3fv) (GLint location, GLsizei count, const GLfloat* v);
   void         (*glUniform3i) (GLint location, GLint x, GLint y, GLint z);
   void         (*glUniform3iv) (GLint location, GLsizei count, const GLint* v);
   void         (*glUniform4f) (GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
   void         (*glUniform4fv) (GLint location, GLsizei count, const GLfloat* v);
   void         (*glUniform4i) (GLint location, GLint x, GLint y, GLint z, GLint w);
   void         (*glUniform4iv) (GLint location, GLsizei count, const GLint* v);
   void         (*glUniformMatrix2fv) (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
   void         (*glUniformMatrix3fv) (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
   void         (*glUniformMatrix4fv) (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
   void         (*glUseProgram) (GLuint program);
   void         (*glValidateProgram) (GLuint program);
   void         (*glVertexAttrib1f) (GLuint indx, GLfloat x);
   void         (*glVertexAttrib1fv) (GLuint indx, const GLfloat* values);
   void         (*glVertexAttrib2f) (GLuint indx, GLfloat x, GLfloat y);
   void         (*glVertexAttrib2fv) (GLuint indx, const GLfloat* values);
   void         (*glVertexAttrib3f) (GLuint indx, GLfloat x, GLfloat y, GLfloat z);
   void         (*glVertexAttrib3fv) (GLuint indx, const GLfloat* values);
   void         (*glVertexAttrib4f) (GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
   void         (*glVertexAttrib4fv) (GLuint indx, const GLfloat* values);
   void         (*glVertexAttribPointer) (GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* ptr);
   void         (*glViewport) (GLint x, GLint y, GLsizei width, GLsizei height);
};

#endif