summaryrefslogtreecommitdiff
path: root/gfx/gl/GLLibraryEGL.h
blob: 99c8414af55781ad42fc0c2e7c3ba4a9db536cf2 (plain)
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
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef GLLIBRARYEGL_H_
#define GLLIBRARYEGL_H_

#if defined(MOZ_X11)
#include "mozilla/X11Util.h"
#endif

#include "GLLibraryLoader.h"
#include "mozilla/StaticMutex.h"
#include "mozilla/ThreadLocal.h"
#include "nsIFile.h"
#include "GeckoProfiler.h"

#include <bitset>
#include <vector>

#ifdef XP_WIN
    #ifndef WIN32_LEAN_AND_MEAN
        #define WIN32_LEAN_AND_MEAN 1
    #endif

    #include <windows.h>

    typedef HDC EGLNativeDisplayType;
    typedef HBITMAP EGLNativePixmapType;
    typedef HWND EGLNativeWindowType;
#else
    typedef void* EGLNativeDisplayType;
    typedef void* EGLNativePixmapType;
    typedef void* EGLNativeWindowType;

    #ifdef ANDROID
        // We only need to explicitly dlopen egltrace
        // on android as we can use LD_PRELOAD or other tricks
        // on other platforms. We look for it in /data/local
        // as that's writeable by all users
        //
        // This should really go in GLLibraryEGL.cpp but we currently reference
        // APITRACE_LIB in GLContextProviderEGL.cpp. Further refactoring
        // will come in subsequent patches on Bug 732865
        #define APITRACE_LIB "/data/local/tmp/egltrace.so"
    #endif
#endif

#if defined(MOZ_X11)
#define EGL_DEFAULT_DISPLAY  ((EGLNativeDisplayType)mozilla::DefaultXDisplay())
#else
#define EGL_DEFAULT_DISPLAY  ((EGLNativeDisplayType)0)
#endif

namespace angle {
class Platform;
}

namespace mozilla {

namespace gfx {
class DataSourceSurface;
}

namespace gl {

#undef BEFORE_GL_CALL
#undef AFTER_GL_CALL

#ifdef DEBUG

#ifndef MOZ_FUNCTION_NAME
# ifdef __GNUC__
#  define MOZ_FUNCTION_NAME __PRETTY_FUNCTION__
# elif defined(_MSC_VER)
#  define MOZ_FUNCTION_NAME __FUNCTION__
# else
#  define MOZ_FUNCTION_NAME __func__  // defined in C99, supported in various C++ compilers. Just raw function name.
# endif
#endif

#ifdef MOZ_WIDGET_ANDROID
// Record the name of the GL call for better hang stacks on Android.
#define BEFORE_GL_CALL                      \
    PROFILER_LABEL_FUNC(                    \
      js::ProfileEntry::Category::GRAPHICS);\
    BeforeGLCall(MOZ_FUNCTION_NAME)
#else
#define BEFORE_GL_CALL do {          \
    BeforeGLCall(MOZ_FUNCTION_NAME); \
} while (0)
#endif

#define AFTER_GL_CALL do {           \
    AfterGLCall(MOZ_FUNCTION_NAME);  \
} while (0)
#else
#ifdef MOZ_WIDGET_ANDROID
// Record the name of the GL call for better hang stacks on Android.
#define BEFORE_GL_CALL PROFILER_LABEL_FUNC(js::ProfileEntry::Category::GRAPHICS)
#else
#define BEFORE_GL_CALL
#endif
#define AFTER_GL_CALL
#endif

class GLContext;

class GLLibraryEGL
{
public:
    GLLibraryEGL()
        : mInitialized(false),
          mEGLLibrary(nullptr),
          mEGLDisplay(EGL_NO_DISPLAY),
          mIsANGLE(false),
          mIsWARP(false)
    {
        ClearSymbols();
    }

    void ClearSymbols() {
        mSymbols.fGetDisplay = nullptr;
        mSymbols.fGetPlatformDisplayEXT = nullptr;
        mSymbols.fTerminate = nullptr;
        mSymbols.fGetCurrentSurface = nullptr;
        mSymbols.fGetCurrentContext = nullptr;
        mSymbols.fMakeCurrent = nullptr;
        mSymbols.fDestroyContext = nullptr;
        mSymbols.fCreateContext = nullptr;
        mSymbols.fDestroySurface = nullptr;
        mSymbols.fCreateWindowSurface = nullptr;
        mSymbols.fCreatePbufferSurface = nullptr;
        mSymbols.fCreatePixmapSurface = nullptr;
        mSymbols.fBindAPI = nullptr;
        mSymbols.fInitialize = nullptr;
        mSymbols.fChooseConfig = nullptr;
        mSymbols.fGetError = nullptr;
        mSymbols.fGetConfigAttrib = nullptr;
        mSymbols.fGetConfigs = nullptr;
        mSymbols.fWaitNative = nullptr;
        mSymbols.fGetProcAddress = nullptr;
        mSymbols.fSwapBuffers = nullptr;
        mSymbols.fCopyBuffers = nullptr;
        mSymbols.fQueryString = nullptr;
        mSymbols.fQueryStringImplementationANDROID = nullptr;
        mSymbols.fQueryContext = nullptr;
        mSymbols.fBindTexImage = nullptr;
        mSymbols.fReleaseTexImage = nullptr;
        mSymbols.fCreateImage = nullptr;
        mSymbols.fDestroyImage = nullptr;
        mSymbols.fLockSurface = nullptr;
        mSymbols.fUnlockSurface = nullptr;
        mSymbols.fQuerySurface = nullptr;
        mSymbols.fQuerySurfacePointerANGLE = nullptr;
        mSymbols.fCreateSync = nullptr;
        mSymbols.fDestroySync = nullptr;
        mSymbols.fClientWaitSync = nullptr;
        mSymbols.fGetSyncAttrib = nullptr;
        mSymbols.fDupNativeFenceFDANDROID = nullptr;
    }

    void InitClientExtensions();
    void InitDisplayExtensions();

    /**
     * Known GL extensions that can be queried by
     * IsExtensionSupported.  The results of this are cached, and as
     * such it's safe to use this even in performance critical code.
     * If you add to this array, remember to add to the string names
     * in GLContext.cpp.
     */
    enum EGLExtensions {
        KHR_image_base,
        KHR_image_pixmap,
        KHR_gl_texture_2D_image,
        KHR_lock_surface,
        ANGLE_surface_d3d_texture_2d_share_handle,
        EXT_create_context_robustness,
        KHR_image,
        KHR_fence_sync,
        ANDROID_native_fence_sync,
        EGL_ANDROID_image_crop,
        ANGLE_platform_angle,
        ANGLE_platform_angle_d3d,
        Extensions_Max
    };

    bool IsExtensionSupported(EGLExtensions aKnownExtension) const {
        return mAvailableExtensions[aKnownExtension];
    }

    void MarkExtensionUnsupported(EGLExtensions aKnownExtension) {
        mAvailableExtensions[aKnownExtension] = false;
    }

protected:
    std::bitset<Extensions_Max> mAvailableExtensions;

public:

    EGLDisplay fGetDisplay(void* display_id)
    {
        BEFORE_GL_CALL;
        EGLDisplay disp = mSymbols.fGetDisplay(display_id);
        AFTER_GL_CALL;
        return disp;
    }

    EGLDisplay fGetPlatformDisplayEXT(EGLenum platform, void* native_display, const EGLint* attrib_list)
    {
        BEFORE_GL_CALL;
        EGLDisplay disp = mSymbols.fGetPlatformDisplayEXT(platform, native_display, attrib_list);
        AFTER_GL_CALL;
        return disp;
    }

    EGLBoolean fTerminate(EGLDisplay display)
    {
        BEFORE_GL_CALL;
        EGLBoolean ret = mSymbols.fTerminate(display);
        AFTER_GL_CALL;
        return ret;
    }

    EGLSurface fGetCurrentSurface(EGLint id)
    {
        BEFORE_GL_CALL;
        EGLSurface surf = mSymbols.fGetCurrentSurface(id);
        AFTER_GL_CALL;
        return surf;
    }

    EGLContext fGetCurrentContext()
    {
        BEFORE_GL_CALL;
        EGLContext context = mSymbols.fGetCurrentContext();
        AFTER_GL_CALL;
        return context;
    }

    EGLBoolean fMakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fMakeCurrent(dpy, draw, read, ctx);
        AFTER_GL_CALL;
        return b;
    }

    EGLBoolean fDestroyContext(EGLDisplay dpy, EGLContext ctx)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fDestroyContext(dpy, ctx);
        AFTER_GL_CALL;
        return b;
    }

    EGLContext fCreateContext(EGLDisplay dpy, EGLConfig config, EGLContext share_context, const EGLint* attrib_list)
    {
        BEFORE_GL_CALL;
        EGLContext ctx = mSymbols.fCreateContext(dpy, config, share_context, attrib_list);
        AFTER_GL_CALL;
        return ctx;
    }

    EGLBoolean fDestroySurface(EGLDisplay dpy, EGLSurface surface)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fDestroySurface(dpy, surface);
        AFTER_GL_CALL;
        return b;
    }

    EGLSurface fCreateWindowSurface(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint* attrib_list)
    {
        BEFORE_GL_CALL;
        EGLSurface surf = mSymbols.fCreateWindowSurface(dpy, config, win, attrib_list);
        AFTER_GL_CALL;
        return surf;
    }

    EGLSurface fCreatePbufferSurface(EGLDisplay dpy, EGLConfig config, const EGLint* attrib_list)
    {
        BEFORE_GL_CALL;
        EGLSurface surf = mSymbols.fCreatePbufferSurface(dpy, config, attrib_list);
        AFTER_GL_CALL;
        return surf;
    }

    EGLSurface fCreatePixmapSurface(EGLDisplay dpy, EGLConfig config, EGLNativePixmapType pixmap, const EGLint* attrib_list)
    {
        BEFORE_GL_CALL;
        EGLSurface surf = mSymbols.fCreatePixmapSurface(dpy, config, pixmap, attrib_list);
        AFTER_GL_CALL;
        return surf;
    }

    EGLBoolean fBindAPI(EGLenum api)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fBindAPI(api);
        AFTER_GL_CALL;
        return b;
    }

    EGLBoolean fInitialize(EGLDisplay dpy, EGLint* major, EGLint* minor)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fInitialize(dpy, major, minor);
        AFTER_GL_CALL;
        return b;
    }

    EGLBoolean fChooseConfig(EGLDisplay dpy, const EGLint* attrib_list, EGLConfig* configs, EGLint config_size, EGLint* num_config)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fChooseConfig(dpy, attrib_list, configs, config_size, num_config);
        AFTER_GL_CALL;
        return b;
    }

    EGLint fGetError()
    {
        BEFORE_GL_CALL;
        EGLint i = mSymbols.fGetError();
        AFTER_GL_CALL;
        return i;
    }

    EGLBoolean fGetConfigAttrib(EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint* value)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fGetConfigAttrib(dpy, config, attribute, value);
        AFTER_GL_CALL;
        return b;
    }

    EGLBoolean fGetConfigs(EGLDisplay dpy, EGLConfig* configs, EGLint config_size, EGLint* num_config)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fGetConfigs(dpy, configs, config_size, num_config);
        AFTER_GL_CALL;
        return b;
    }

    EGLBoolean fWaitNative(EGLint engine)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fWaitNative(engine);
        AFTER_GL_CALL;
        return b;
    }

    EGLCastToRelevantPtr fGetProcAddress(const char* procname)
    {
        BEFORE_GL_CALL;
        EGLCastToRelevantPtr p = mSymbols.fGetProcAddress(procname);
        AFTER_GL_CALL;
        return p;
    }

    EGLBoolean fSwapBuffers(EGLDisplay dpy, EGLSurface surface)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fSwapBuffers(dpy, surface);
        AFTER_GL_CALL;
        return b;
    }

    EGLBoolean fCopyBuffers(EGLDisplay dpy, EGLSurface surface, EGLNativePixmapType target)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fCopyBuffers(dpy, surface, target);
        AFTER_GL_CALL;
        return b;
    }

    const GLubyte* fQueryString(EGLDisplay dpy, EGLint name)
    {
        BEFORE_GL_CALL;
        const GLubyte* b;
        if (mSymbols.fQueryStringImplementationANDROID) {
          b = mSymbols.fQueryStringImplementationANDROID(dpy, name);
        } else {
          b = mSymbols.fQueryString(dpy, name);
        }
        AFTER_GL_CALL;
        return b;
    }

    EGLBoolean fQueryContext(EGLDisplay dpy, EGLContext ctx, EGLint attribute, EGLint* value)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fQueryContext(dpy, ctx, attribute, value);
        AFTER_GL_CALL;
        return b;
    }

    EGLBoolean fBindTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fBindTexImage(dpy, surface, buffer);
        AFTER_GL_CALL;
        return b;
    }

    EGLBoolean fReleaseTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fReleaseTexImage(dpy, surface, buffer);
        AFTER_GL_CALL;
        return b;
    }

    EGLImage fCreateImage(EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, const EGLint* attrib_list)
    {
         BEFORE_GL_CALL;
         EGLImage i = mSymbols.fCreateImage(dpy, ctx, target, buffer, attrib_list);
         AFTER_GL_CALL;
         return i;
    }

    EGLBoolean fDestroyImage(EGLDisplay dpy, EGLImage image)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fDestroyImage(dpy, image);
        AFTER_GL_CALL;
        return b;
    }

    // New extension which allow us to lock texture and get raw image pointer
    EGLBoolean fLockSurface(EGLDisplay dpy, EGLSurface surface, const EGLint* attrib_list)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fLockSurface(dpy, surface, attrib_list);
        AFTER_GL_CALL;
        return b;
    }

    EGLBoolean fUnlockSurface(EGLDisplay dpy, EGLSurface surface)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fUnlockSurface(dpy, surface);
        AFTER_GL_CALL;
        return b;
    }

    EGLBoolean fQuerySurface(EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint* value)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fQuerySurface(dpy, surface, attribute, value);
        AFTER_GL_CALL;
        return b;
    }

    EGLBoolean fQuerySurfacePointerANGLE(EGLDisplay dpy, EGLSurface surface, EGLint attribute, void** value)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fQuerySurfacePointerANGLE(dpy, surface, attribute, value);
        AFTER_GL_CALL;
        return b;
    }

    EGLSync fCreateSync(EGLDisplay dpy, EGLenum type, const EGLint* attrib_list)
    {
        BEFORE_GL_CALL;
        EGLSync ret = mSymbols.fCreateSync(dpy, type, attrib_list);
        AFTER_GL_CALL;
        return ret;
    }

    EGLBoolean fDestroySync(EGLDisplay dpy, EGLSync sync)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fDestroySync(dpy, sync);
        AFTER_GL_CALL;
        return b;
    }

    EGLint fClientWaitSync(EGLDisplay dpy, EGLSync sync, EGLint flags, EGLTime timeout)
    {
        BEFORE_GL_CALL;
        EGLint ret = mSymbols.fClientWaitSync(dpy, sync, flags, timeout);
        AFTER_GL_CALL;
        return ret;
    }

    EGLBoolean fGetSyncAttrib(EGLDisplay dpy, EGLSync sync, EGLint attribute, EGLint* value)
    {
        BEFORE_GL_CALL;
        EGLBoolean b = mSymbols.fGetSyncAttrib(dpy, sync, attribute, value);
        AFTER_GL_CALL;
        return b;
    }

    EGLint fDupNativeFenceFDANDROID(EGLDisplay dpy, EGLSync sync)
    {
        MOZ_ASSERT(mSymbols.fDupNativeFenceFDANDROID);
        BEFORE_GL_CALL;
        EGLint ret = mSymbols.fDupNativeFenceFDANDROID(dpy, sync);
        AFTER_GL_CALL;
        return ret;
    }

    EGLDisplay Display() {
        MOZ_ASSERT(mInitialized);
        return mEGLDisplay;
    }

    bool IsANGLE() const {
        MOZ_ASSERT(mInitialized);
        return mIsANGLE;
    }

    bool IsWARP() const {
        MOZ_ASSERT(mInitialized);
        return mIsWARP;
    }

    bool HasKHRImageBase() {
        return IsExtensionSupported(KHR_image) || IsExtensionSupported(KHR_image_base);
    }

    bool HasKHRImagePixmap() {
        return IsExtensionSupported(KHR_image) || IsExtensionSupported(KHR_image_pixmap);
    }

    bool HasKHRImageTexture2D() {
        return IsExtensionSupported(KHR_gl_texture_2D_image);
    }

    bool HasANGLESurfaceD3DTexture2DShareHandle() {
        return IsExtensionSupported(ANGLE_surface_d3d_texture_2d_share_handle);
    }

    bool HasRobustness() const {
        return IsExtensionSupported(EXT_create_context_robustness);
    }

    bool ReadbackEGLImage(EGLImage image, gfx::DataSourceSurface* out_surface);

    bool EnsureInitialized(bool forceAccel, nsACString* const out_failureId);

    void DumpEGLConfig(EGLConfig cfg);
    void DumpEGLConfigs();

    struct {
        typedef EGLDisplay (GLAPIENTRY * pfnGetDisplay)(void* display_id);
        pfnGetDisplay fGetDisplay;
        typedef EGLDisplay(GLAPIENTRY * pfnGetPlatformDisplayEXT)(EGLenum platform, void* native_display, const EGLint* attrib_list);
        pfnGetPlatformDisplayEXT fGetPlatformDisplayEXT;
        typedef EGLBoolean (GLAPIENTRY * pfnTerminate)(EGLDisplay dpy);
        pfnTerminate fTerminate;
        typedef EGLSurface (GLAPIENTRY * pfnGetCurrentSurface)(EGLint);
        pfnGetCurrentSurface fGetCurrentSurface;
        typedef EGLContext (GLAPIENTRY * pfnGetCurrentContext)(void);
        pfnGetCurrentContext fGetCurrentContext;
        typedef EGLBoolean (GLAPIENTRY * pfnMakeCurrent)(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx);
        pfnMakeCurrent fMakeCurrent;
        typedef EGLBoolean (GLAPIENTRY * pfnDestroyContext)(EGLDisplay dpy, EGLContext ctx);
        pfnDestroyContext fDestroyContext;
        typedef EGLContext (GLAPIENTRY * pfnCreateContext)(EGLDisplay dpy, EGLConfig config, EGLContext share_context, const EGLint* attrib_list);
        pfnCreateContext fCreateContext;
        typedef EGLBoolean (GLAPIENTRY * pfnDestroySurface)(EGLDisplay dpy, EGLSurface surface);
        pfnDestroySurface fDestroySurface;
        typedef EGLSurface (GLAPIENTRY * pfnCreateWindowSurface)(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint* attrib_list);
        pfnCreateWindowSurface fCreateWindowSurface;
        typedef EGLSurface (GLAPIENTRY * pfnCreatePbufferSurface)(EGLDisplay dpy, EGLConfig config, const EGLint* attrib_list);
        pfnCreatePbufferSurface fCreatePbufferSurface;
        typedef EGLSurface (GLAPIENTRY * pfnCreatePixmapSurface)(EGLDisplay dpy, EGLConfig config, EGLNativePixmapType pixmap, const EGLint* attrib_list);
        pfnCreatePixmapSurface fCreatePixmapSurface;
        typedef EGLBoolean (GLAPIENTRY * pfnBindAPI)(EGLenum api);
        pfnBindAPI fBindAPI;
        typedef EGLBoolean (GLAPIENTRY * pfnInitialize)(EGLDisplay dpy, EGLint* major, EGLint* minor);
        pfnInitialize fInitialize;
        typedef EGLBoolean (GLAPIENTRY * pfnChooseConfig)(EGLDisplay dpy, const EGLint* attrib_list, EGLConfig* configs, EGLint config_size, EGLint* num_config);
        pfnChooseConfig fChooseConfig;
        typedef EGLint (GLAPIENTRY * pfnGetError)(void);
        pfnGetError fGetError;
        typedef EGLBoolean (GLAPIENTRY * pfnGetConfigAttrib)(EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint* value);
        pfnGetConfigAttrib fGetConfigAttrib;
        typedef EGLBoolean (GLAPIENTRY * pfnGetConfigs)(EGLDisplay dpy, EGLConfig* configs, EGLint config_size, EGLint* num_config);
        pfnGetConfigs fGetConfigs;
        typedef EGLBoolean (GLAPIENTRY * pfnWaitNative)(EGLint engine);
        pfnWaitNative fWaitNative;
        typedef EGLCastToRelevantPtr (GLAPIENTRY * pfnGetProcAddress)(const char* procname);
        pfnGetProcAddress fGetProcAddress;
        typedef EGLBoolean (GLAPIENTRY * pfnSwapBuffers)(EGLDisplay dpy, EGLSurface surface);
        pfnSwapBuffers fSwapBuffers;
        typedef EGLBoolean (GLAPIENTRY * pfnCopyBuffers)(EGLDisplay dpy, EGLSurface surface,
                                                         EGLNativePixmapType target);
        pfnCopyBuffers fCopyBuffers;
        typedef const GLubyte* (GLAPIENTRY * pfnQueryString)(EGLDisplay, EGLint name);
        pfnQueryString fQueryString;
        pfnQueryString fQueryStringImplementationANDROID;
        typedef EGLBoolean (GLAPIENTRY * pfnQueryContext)(EGLDisplay dpy, EGLContext ctx,
                                                          EGLint attribute, EGLint* value);
        pfnQueryContext fQueryContext;
        typedef EGLBoolean (GLAPIENTRY * pfnBindTexImage)(EGLDisplay, EGLSurface surface, EGLint buffer);
        pfnBindTexImage fBindTexImage;
        typedef EGLBoolean (GLAPIENTRY * pfnReleaseTexImage)(EGLDisplay, EGLSurface surface, EGLint buffer);
        pfnReleaseTexImage fReleaseTexImage;
        typedef EGLImage (GLAPIENTRY * pfnCreateImage)(EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, const EGLint* attrib_list);
        pfnCreateImage fCreateImage;
        typedef EGLBoolean (GLAPIENTRY * pfnDestroyImage)(EGLDisplay dpy, EGLImage image);
        pfnDestroyImage fDestroyImage;

        // New extension which allow us to lock texture and get raw image pointer
        typedef EGLBoolean (GLAPIENTRY * pfnLockSurface)(EGLDisplay dpy, EGLSurface surface, const EGLint* attrib_list);
        pfnLockSurface fLockSurface;
        typedef EGLBoolean (GLAPIENTRY * pfnUnlockSurface)(EGLDisplay dpy, EGLSurface surface);
        pfnUnlockSurface fUnlockSurface;
        typedef EGLBoolean (GLAPIENTRY * pfnQuerySurface)(EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint* value);
        pfnQuerySurface fQuerySurface;

        typedef EGLBoolean (GLAPIENTRY * pfnQuerySurfacePointerANGLE)(EGLDisplay dpy, EGLSurface surface, EGLint attribute, void** value);
        pfnQuerySurfacePointerANGLE fQuerySurfacePointerANGLE;

        typedef EGLSync (GLAPIENTRY * pfnCreateSync)(EGLDisplay dpy, EGLenum type, const EGLint* attrib_list);
        pfnCreateSync fCreateSync;
        typedef EGLBoolean (GLAPIENTRY * pfnDestroySync)(EGLDisplay dpy, EGLSync sync);
        pfnDestroySync fDestroySync;
        typedef EGLint (GLAPIENTRY * pfnClientWaitSync)(EGLDisplay dpy, EGLSync sync, EGLint flags, EGLTime timeout);
        pfnClientWaitSync fClientWaitSync;
        typedef EGLBoolean (GLAPIENTRY * pfnGetSyncAttrib)(EGLDisplay dpy, EGLSync sync, EGLint attribute, EGLint* value);
        pfnGetSyncAttrib fGetSyncAttrib;
        typedef EGLint (GLAPIENTRY * pfnDupNativeFenceFDANDROID)(EGLDisplay dpy, EGLSync sync);
        pfnDupNativeFenceFDANDROID fDupNativeFenceFDANDROID;

    } mSymbols;

#ifdef DEBUG
    static void BeforeGLCall(const char* glFunction);
    static void AfterGLCall(const char* glFunction);
#endif

    EGLContext CachedCurrentContext() {
        return nullptr;
    }
    void UnsetCachedCurrentContext() {}
    void SetCachedCurrentContext(EGLContext aCtx) { }
    bool CachedCurrentContextMatches() { return true; }

private:
    bool mInitialized;
    PRLibrary* mEGLLibrary;
    EGLDisplay mEGLDisplay;
    RefPtr<GLContext> mReadbackGL;

    bool mIsANGLE;
    bool mIsWARP;
    static StaticMutex sMutex;
};

extern GLLibraryEGL sEGLLibrary;
#define EGL_DISPLAY()        sEGLLibrary.Display()

} /* namespace gl */
} /* namespace mozilla */

#endif /* GLLIBRARYEGL_H_ */