forked from danbrough/mobile
-
Notifications
You must be signed in to change notification settings - Fork 0
/
interface.go
889 lines (734 loc) · 31 KB
/
interface.go
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
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package gl
// Context is an OpenGL ES context.
//
// A Context has a method for every GL function supported by ES 2 or later.
// In a program compiled with ES 3 support, a Context is also a Context3.
// For example, a program can:
//
// func f(glctx gl.Context) {
// glctx.(gl.Context3).BlitFramebuffer(...)
// }
//
// Calls are not safe for concurrent use. However calls can be made from
// any goroutine, the gl package removes the notion of thread-local
// context.
//
// Contexts are independent. Two contexts can be used concurrently.
type Context interface {
// ActiveTexture sets the active texture unit.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glActiveTexture.xhtml
ActiveTexture(texture Enum)
// AttachShader attaches a shader to a program.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glAttachShader.xhtml
AttachShader(p Program, s Shader)
// BindAttribLocation binds a vertex attribute index with a named
// variable.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBindAttribLocation.xhtml
BindAttribLocation(p Program, a Attrib, name string)
// BindBuffer binds a buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBindBuffer.xhtml
BindBuffer(target Enum, b Buffer)
// BindFramebuffer binds a framebuffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBindFramebuffer.xhtml
BindFramebuffer(target Enum, fb Framebuffer)
// BindRenderbuffer binds a render buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBindRenderbuffer.xhtml
BindRenderbuffer(target Enum, rb Renderbuffer)
// BindTexture binds a texture.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBindTexture.xhtml
BindTexture(target Enum, t Texture)
// BindVertexArray binds a vertex array.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBindVertexArray.xhtml
BindVertexArray(rb VertexArray)
// BlendColor sets the blend color.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBlendColor.xhtml
BlendColor(red, green, blue, alpha float32)
// BlendEquation sets both RGB and alpha blend equations.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBlendEquation.xhtml
BlendEquation(mode Enum)
// BlendEquationSeparate sets RGB and alpha blend equations separately.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBlendEquationSeparate.xhtml
BlendEquationSeparate(modeRGB, modeAlpha Enum)
// BlendFunc sets the pixel blending factors.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBlendFunc.xhtml
BlendFunc(sfactor, dfactor Enum)
// BlendFunc sets the pixel RGB and alpha blending factors separately.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBlendFuncSeparate.xhtml
BlendFuncSeparate(sfactorRGB, dfactorRGB, sfactorAlpha, dfactorAlpha Enum)
// BufferData creates a new data store for the bound buffer object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBufferData.xhtml
BufferData(target Enum, src []byte, usage Enum)
// BufferInit creates a new uninitialized data store for the bound buffer object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBufferData.xhtml
BufferInit(target Enum, size int, usage Enum)
// BufferSubData sets some of data in the bound buffer object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glBufferSubData.xhtml
BufferSubData(target Enum, offset int, data []byte)
// CheckFramebufferStatus reports the completeness status of the
// active framebuffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glCheckFramebufferStatus.xhtml
CheckFramebufferStatus(target Enum) Enum
// Clear clears the window.
//
// The behavior of Clear is influenced by the pixel ownership test,
// the scissor test, dithering, and the buffer writemasks.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glClear.xhtml
Clear(mask Enum)
// ClearColor specifies the RGBA values used to clear color buffers.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glClearColor.xhtml
ClearColor(red, green, blue, alpha float32)
// ClearDepthf sets the depth value used to clear the depth buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glClearDepthf.xhtml
ClearDepthf(d float32)
// ClearStencil sets the index used to clear the stencil buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glClearStencil.xhtml
ClearStencil(s int)
// ColorMask specifies whether color components in the framebuffer
// can be written.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glColorMask.xhtml
ColorMask(red, green, blue, alpha bool)
// CompileShader compiles the source code of s.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glCompileShader.xhtml
CompileShader(s Shader)
// CompressedTexImage2D writes a compressed 2D texture.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glCompressedTexImage2D.xhtml
CompressedTexImage2D(target Enum, level int, internalformat Enum, width, height, border int, data []byte)
// CompressedTexSubImage2D writes a subregion of a compressed 2D texture.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glCompressedTexSubImage2D.xhtml
CompressedTexSubImage2D(target Enum, level, xoffset, yoffset, width, height int, format Enum, data []byte)
// CopyTexImage2D writes a 2D texture from the current framebuffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glCopyTexImage2D.xhtml
CopyTexImage2D(target Enum, level int, internalformat Enum, x, y, width, height, border int)
// CopyTexSubImage2D writes a 2D texture subregion from the
// current framebuffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glCopyTexSubImage2D.xhtml
CopyTexSubImage2D(target Enum, level, xoffset, yoffset, x, y, width, height int)
// CreateBuffer creates a buffer object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGenBuffers.xhtml
CreateBuffer() Buffer
// CreateFramebuffer creates a framebuffer object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGenFramebuffers.xhtml
CreateFramebuffer() Framebuffer
// CreateProgram creates a new empty program object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glCreateProgram.xhtml
CreateProgram() Program
// CreateRenderbuffer create a renderbuffer object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGenRenderbuffers.xhtml
CreateRenderbuffer() Renderbuffer
// CreateShader creates a new empty shader object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glCreateShader.xhtml
CreateShader(ty Enum) Shader
// CreateTexture creates a texture object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGenTextures.xhtml
CreateTexture() Texture
// CreateTVertexArray creates a vertex array.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGenVertexArrays.xhtml
CreateVertexArray() VertexArray
// CullFace specifies which polygons are candidates for culling.
//
// Valid modes: FRONT, BACK, FRONT_AND_BACK.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glCullFace.xhtml
CullFace(mode Enum)
// DeleteBuffer deletes the given buffer object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteBuffers.xhtml
DeleteBuffer(v Buffer)
// DeleteFramebuffer deletes the given framebuffer object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteFramebuffers.xhtml
DeleteFramebuffer(v Framebuffer)
// DeleteProgram deletes the given program object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteProgram.xhtml
DeleteProgram(p Program)
// DeleteRenderbuffer deletes the given render buffer object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteRenderbuffers.xhtml
DeleteRenderbuffer(v Renderbuffer)
// DeleteShader deletes shader s.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteShader.xhtml
DeleteShader(s Shader)
// DeleteTexture deletes the given texture object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteTextures.xhtml
DeleteTexture(v Texture)
// DeleteVertexArray deletes the given render buffer object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteVertexArrays.xhtml
DeleteVertexArray(v VertexArray)
// DepthFunc sets the function used for depth buffer comparisons.
//
// Valid fn values:
// NEVER
// LESS
// EQUAL
// LEQUAL
// GREATER
// NOTEQUAL
// GEQUAL
// ALWAYS
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDepthFunc.xhtml
DepthFunc(fn Enum)
// DepthMask sets the depth buffer enabled for writing.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDepthMask.xhtml
DepthMask(flag bool)
// DepthRangef sets the mapping from normalized device coordinates to
// window coordinates.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDepthRangef.xhtml
DepthRangef(n, f float32)
// DetachShader detaches the shader s from the program p.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDetachShader.xhtml
DetachShader(p Program, s Shader)
// Disable disables various GL capabilities.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDisable.xhtml
Disable(cap Enum)
// DisableVertexAttribArray disables a vertex attribute array.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDisableVertexAttribArray.xhtml
DisableVertexAttribArray(a Attrib)
// DrawArrays renders geometric primitives from the bound data.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDrawArrays.xhtml
DrawArrays(mode Enum, first, count int)
// DrawElements renders primitives from a bound buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glDrawElements.xhtml
DrawElements(mode Enum, count int, ty Enum, offset int)
// TODO(crawshaw): consider DrawElements8 / DrawElements16 / DrawElements32
// Enable enables various GL capabilities.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glEnable.xhtml
Enable(cap Enum)
// EnableVertexAttribArray enables a vertex attribute array.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glEnableVertexAttribArray.xhtml
EnableVertexAttribArray(a Attrib)
// Finish blocks until the effects of all previously called GL
// commands are complete.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glFinish.xhtml
Finish()
// Flush empties all buffers. It does not block.
//
// An OpenGL implementation may buffer network communication,
// the command stream, or data inside the graphics accelerator.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glFlush.xhtml
Flush()
// FramebufferRenderbuffer attaches rb to the current frame buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glFramebufferRenderbuffer.xhtml
FramebufferRenderbuffer(target, attachment, rbTarget Enum, rb Renderbuffer)
// FramebufferTexture2D attaches the t to the current frame buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glFramebufferTexture2D.xhtml
FramebufferTexture2D(target, attachment, texTarget Enum, t Texture, level int)
// FrontFace defines which polygons are front-facing.
//
// Valid modes: CW, CCW.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glFrontFace.xhtml
FrontFace(mode Enum)
// GenerateMipmap generates mipmaps for the current texture.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGenerateMipmap.xhtml
GenerateMipmap(target Enum)
// GetActiveAttrib returns details about an active attribute variable.
// A value of 0 for index selects the first active attribute variable.
// Permissible values for index range from 0 to the number of active
// attribute variables minus 1.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetActiveAttrib.xhtml
GetActiveAttrib(p Program, index uint32) (name string, size int, ty Enum)
// GetActiveUniform returns details about an active uniform variable.
// A value of 0 for index selects the first active uniform variable.
// Permissible values for index range from 0 to the number of active
// uniform variables minus 1.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetActiveUniform.xhtml
GetActiveUniform(p Program, index uint32) (name string, size int, ty Enum)
// GetAttachedShaders returns the shader objects attached to program p.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetAttachedShaders.xhtml
GetAttachedShaders(p Program) []Shader
// GetAttribLocation returns the location of an attribute variable.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetAttribLocation.xhtml
GetAttribLocation(p Program, name string) Attrib
// GetBooleanv returns the boolean values of parameter pname.
//
// Many boolean parameters can be queried more easily using IsEnabled.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGet.xhtml
GetBooleanv(dst []bool, pname Enum)
// GetFloatv returns the float values of parameter pname.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGet.xhtml
GetFloatv(dst []float32, pname Enum)
// GetIntegerv returns the int values of parameter pname.
//
// Single values may be queried more easily using GetInteger.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGet.xhtml
GetIntegerv(dst []int32, pname Enum)
// GetInteger returns the int value of parameter pname.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGet.xhtml
GetInteger(pname Enum) int
// GetBufferParameteri returns a parameter for the active buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetBufferParameter.xhtml
GetBufferParameteri(target, value Enum) int
// GetError returns the next error.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetError.xhtml
GetError() Enum
// GetFramebufferAttachmentParameteri returns attachment parameters
// for the active framebuffer object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetFramebufferAttachmentParameteriv.xhtml
GetFramebufferAttachmentParameteri(target, attachment, pname Enum) int
// GetProgrami returns a parameter value for a program.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetProgramiv.xhtml
GetProgrami(p Program, pname Enum) int
// GetProgramInfoLog returns the information log for a program.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetProgramInfoLog.xhtml
GetProgramInfoLog(p Program) string
// GetRenderbufferParameteri returns a parameter value for a render buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetRenderbufferParameteriv.xhtml
GetRenderbufferParameteri(target, pname Enum) int
// GetShaderi returns a parameter value for a shader.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetShaderiv.xhtml
GetShaderi(s Shader, pname Enum) int
// GetShaderInfoLog returns the information log for a shader.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetShaderInfoLog.xhtml
GetShaderInfoLog(s Shader) string
// GetShaderPrecisionFormat returns range and precision limits for
// shader types.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetShaderPrecisionFormat.xhtml
GetShaderPrecisionFormat(shadertype, precisiontype Enum) (rangeLow, rangeHigh, precision int)
// GetShaderSource returns source code of shader s.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetShaderSource.xhtml
GetShaderSource(s Shader) string
// GetString reports current GL state.
//
// Valid name values:
// EXTENSIONS
// RENDERER
// SHADING_LANGUAGE_VERSION
// VENDOR
// VERSION
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetString.xhtml
GetString(pname Enum) string
// GetTexParameterfv returns the float values of a texture parameter.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetTexParameter.xhtml
GetTexParameterfv(dst []float32, target, pname Enum)
// GetTexParameteriv returns the int values of a texture parameter.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetTexParameter.xhtml
GetTexParameteriv(dst []int32, target, pname Enum)
// GetUniformfv returns the float values of a uniform variable.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetUniform.xhtml
GetUniformfv(dst []float32, src Uniform, p Program)
// GetUniformiv returns the float values of a uniform variable.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetUniform.xhtml
GetUniformiv(dst []int32, src Uniform, p Program)
// GetUniformLocation returns the location of a uniform variable.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetUniformLocation.xhtml
GetUniformLocation(p Program, name string) Uniform
// GetVertexAttribf reads the float value of a vertex attribute.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetVertexAttrib.xhtml
GetVertexAttribf(src Attrib, pname Enum) float32
// GetVertexAttribfv reads float values of a vertex attribute.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetVertexAttrib.xhtml
GetVertexAttribfv(dst []float32, src Attrib, pname Enum)
// GetVertexAttribi reads the int value of a vertex attribute.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetVertexAttrib.xhtml
GetVertexAttribi(src Attrib, pname Enum) int32
// GetVertexAttribiv reads int values of a vertex attribute.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetVertexAttrib.xhtml
GetVertexAttribiv(dst []int32, src Attrib, pname Enum)
// TODO(crawshaw): glGetVertexAttribPointerv
// Hint sets implementation-specific modes.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glHint.xhtml
Hint(target, mode Enum)
// IsBuffer reports if b is a valid buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsBuffer.xhtml
IsBuffer(b Buffer) bool
// IsEnabled reports if cap is an enabled capability.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsEnabled.xhtml
IsEnabled(cap Enum) bool
// IsFramebuffer reports if fb is a valid frame buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsFramebuffer.xhtml
IsFramebuffer(fb Framebuffer) bool
// IsProgram reports if p is a valid program object.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsProgram.xhtml
IsProgram(p Program) bool
// IsRenderbuffer reports if rb is a valid render buffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsRenderbuffer.xhtml
IsRenderbuffer(rb Renderbuffer) bool
// IsShader reports if s is valid shader.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsShader.xhtml
IsShader(s Shader) bool
// IsTexture reports if t is a valid texture.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsTexture.xhtml
IsTexture(t Texture) bool
// LineWidth specifies the width of lines.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glLineWidth.xhtml
LineWidth(width float32)
// LinkProgram links the specified program.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glLinkProgram.xhtml
LinkProgram(p Program)
// PixelStorei sets pixel storage parameters.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glPixelStorei.xhtml
PixelStorei(pname Enum, param int32)
// PolygonOffset sets the scaling factors for depth offsets.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glPolygonOffset.xhtml
PolygonOffset(factor, units float32)
// ReadPixels returns pixel data from a buffer.
//
// In GLES 3, the source buffer is controlled with ReadBuffer.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glReadPixels.xhtml
ReadPixels(dst []byte, x, y, width, height int, format, ty Enum)
// ReleaseShaderCompiler frees resources allocated by the shader compiler.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glReleaseShaderCompiler.xhtml
ReleaseShaderCompiler()
// RenderbufferStorage establishes the data storage, format, and
// dimensions of a renderbuffer object's image.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glRenderbufferStorage.xhtml
RenderbufferStorage(target, internalFormat Enum, width, height int)
// SampleCoverage sets multisample coverage parameters.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glSampleCoverage.xhtml
SampleCoverage(value float32, invert bool)
// Scissor defines the scissor box rectangle, in window coordinates.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glScissor.xhtml
Scissor(x, y, width, height int32)
// TODO(crawshaw): ShaderBinary
// ShaderSource sets the source code of s to the given source code.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glShaderSource.xhtml
ShaderSource(s Shader, src string)
// StencilFunc sets the front and back stencil test reference value.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glStencilFunc.xhtml
StencilFunc(fn Enum, ref int, mask uint32)
// StencilFunc sets the front or back stencil test reference value.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glStencilFuncSeparate.xhtml
StencilFuncSeparate(face, fn Enum, ref int, mask uint32)
// StencilMask controls the writing of bits in the stencil planes.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glStencilMask.xhtml
StencilMask(mask uint32)
// StencilMaskSeparate controls the writing of bits in the stencil planes.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glStencilMaskSeparate.xhtml
StencilMaskSeparate(face Enum, mask uint32)
// StencilOp sets front and back stencil test actions.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glStencilOp.xhtml
StencilOp(fail, zfail, zpass Enum)
// StencilOpSeparate sets front or back stencil tests.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glStencilOpSeparate.xhtml
StencilOpSeparate(face, sfail, dpfail, dppass Enum)
// TexImage2D writes a 2D texture image.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexImage2D.xhtml
TexImage2D(target Enum, level int, internalFormat int, width, height int, format Enum, ty Enum, data []byte)
// TexSubImage2D writes a subregion of a 2D texture image.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexSubImage2D.xhtml
TexSubImage2D(target Enum, level int, x, y, width, height int, format, ty Enum, data []byte)
// TexParameterf sets a float texture parameter.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexParameter.xhtml
TexParameterf(target, pname Enum, param float32)
// TexParameterfv sets a float texture parameter array.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexParameter.xhtml
TexParameterfv(target, pname Enum, params []float32)
// TexParameteri sets an integer texture parameter.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexParameter.xhtml
TexParameteri(target, pname Enum, param int)
// TexParameteriv sets an integer texture parameter array.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexParameter.xhtml
TexParameteriv(target, pname Enum, params []int32)
// Uniform1f writes a float uniform variable.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform1f(dst Uniform, v float32)
// Uniform1fv writes a [len(src)]float uniform array.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform1fv(dst Uniform, src []float32)
// Uniform1i writes an int uniform variable.
//
// Uniform1i and Uniform1iv are the only two functions that may be used
// to load uniform variables defined as sampler types. Loading samplers
// with any other function will result in a INVALID_OPERATION error.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform1i(dst Uniform, v int)
// Uniform1iv writes a int uniform array of len(src) elements.
//
// Uniform1i and Uniform1iv are the only two functions that may be used
// to load uniform variables defined as sampler types. Loading samplers
// with any other function will result in a INVALID_OPERATION error.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform1iv(dst Uniform, src []int32)
// Uniform2f writes a vec2 uniform variable.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform2f(dst Uniform, v0, v1 float32)
// Uniform2fv writes a vec2 uniform array of len(src)/2 elements.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform2fv(dst Uniform, src []float32)
// Uniform2i writes an ivec2 uniform variable.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform2i(dst Uniform, v0, v1 int)
// Uniform2iv writes an ivec2 uniform array of len(src)/2 elements.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform2iv(dst Uniform, src []int32)
// Uniform3f writes a vec3 uniform variable.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform3f(dst Uniform, v0, v1, v2 float32)
// Uniform3fv writes a vec3 uniform array of len(src)/3 elements.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform3fv(dst Uniform, src []float32)
// Uniform3i writes an ivec3 uniform variable.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform3i(dst Uniform, v0, v1, v2 int32)
// Uniform3iv writes an ivec3 uniform array of len(src)/3 elements.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform3iv(dst Uniform, src []int32)
// Uniform4f writes a vec4 uniform variable.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform4f(dst Uniform, v0, v1, v2, v3 float32)
// Uniform4fv writes a vec4 uniform array of len(src)/4 elements.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform4fv(dst Uniform, src []float32)
// Uniform4i writes an ivec4 uniform variable.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform4i(dst Uniform, v0, v1, v2, v3 int32)
// Uniform4i writes an ivec4 uniform array of len(src)/4 elements.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
Uniform4iv(dst Uniform, src []int32)
// UniformMatrix2fv writes 2x2 matrices. Each matrix uses four
// float32 values, so the number of matrices written is len(src)/4.
//
// Each matrix must be supplied in column major order.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
UniformMatrix2fv(dst Uniform, src []float32)
// UniformMatrix3fv writes 3x3 matrices. Each matrix uses nine
// float32 values, so the number of matrices written is len(src)/9.
//
// Each matrix must be supplied in column major order.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
UniformMatrix3fv(dst Uniform, src []float32)
// UniformMatrix4fv writes 4x4 matrices. Each matrix uses 16
// float32 values, so the number of matrices written is len(src)/16.
//
// Each matrix must be supplied in column major order.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
UniformMatrix4fv(dst Uniform, src []float32)
// UseProgram sets the active program.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glUseProgram.xhtml
UseProgram(p Program)
// ValidateProgram checks to see whether the executables contained in
// program can execute given the current OpenGL state.
//
// Typically only used for debugging.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glValidateProgram.xhtml
ValidateProgram(p Program)
// VertexAttrib1f writes a float vertex attribute.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
VertexAttrib1f(dst Attrib, x float32)
// VertexAttrib1fv writes a float vertex attribute.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
VertexAttrib1fv(dst Attrib, src []float32)
// VertexAttrib2f writes a vec2 vertex attribute.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
VertexAttrib2f(dst Attrib, x, y float32)
// VertexAttrib2fv writes a vec2 vertex attribute.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
VertexAttrib2fv(dst Attrib, src []float32)
// VertexAttrib3f writes a vec3 vertex attribute.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
VertexAttrib3f(dst Attrib, x, y, z float32)
// VertexAttrib3fv writes a vec3 vertex attribute.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
VertexAttrib3fv(dst Attrib, src []float32)
// VertexAttrib4f writes a vec4 vertex attribute.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
VertexAttrib4f(dst Attrib, x, y, z, w float32)
// VertexAttrib4fv writes a vec4 vertex attribute.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
VertexAttrib4fv(dst Attrib, src []float32)
// VertexAttribPointer uses a bound buffer to define vertex attribute data.
//
// Direct use of VertexAttribPointer to load data into OpenGL is not
// supported via the Go bindings. Instead, use BindBuffer with an
// ARRAY_BUFFER and then fill it using BufferData.
//
// The size argument specifies the number of components per attribute,
// between 1-4. The stride argument specifies the byte offset between
// consecutive vertex attributes.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttribPointer.xhtml
VertexAttribPointer(dst Attrib, size int, ty Enum, normalized bool, stride, offset int)
// Viewport sets the viewport, an affine transformation that
// normalizes device coordinates to window coordinates.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glViewport.xhtml
Viewport(x, y, width, height int)
}
// Context3 is an OpenGL ES 3 context.
//
// When the gl package is compiled with GL ES 3 support, the produced
// Context object also implements the Context3 interface.
type Context3 interface {
Context
// BlitFramebuffer copies a block of pixels between framebuffers.
//
// https://www.khronos.org/opengles/sdk/docs/man3/html/glBlitFramebuffer.xhtml
BlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1 int, mask uint, filter Enum)
}
// Worker is used by display driver code to execute OpenGL calls.
//
// Typically display driver code creates a gl.Context for an application,
// and along with it establishes a locked OS thread to execute the cgo
// calls:
//
// go func() {
// runtime.LockOSThread()
// // ... platform-specific cgo call to bind a C OpenGL context
// // into thread-local storage.
//
// glctx, worker := gl.NewContext()
// workAvailable := worker.WorkAvailable()
// go userAppCode(glctx)
// for {
// select {
// case <-workAvailable:
// worker.DoWork()
// case <-drawEvent:
// // ... platform-specific cgo call to draw screen
// }
// }
// }()
//
// This interface is an internal implementation detail and should only be used
// by the package responsible for managing the screen, such as
// github.com/tougee/jvm/app.
type Worker interface {
// WorkAvailable returns a channel that communicates when DoWork should be
// called.
WorkAvailable() <-chan struct{}
// DoWork performs any pending OpenGL calls.
DoWork()
}