1GL_APPLE_sync
2https://www.khronos.org/registry/OpenGL/extensions/APPLE/APPLE_sync.txt
3GL_APPLE_sync
4
5	GL_TIMEOUT_IGNORED_APPLE 0xFFFFFFFFFFFFFFFFull
6	GL_SYNC_FLUSH_COMMANDS_BIT_APPLE 0x00000001
7	GL_SYNC_OBJECT_APPLE 0x8A53
8	GL_MAX_SERVER_WAIT_TIMEOUT_APPLE 0x9111
9	GL_OBJECT_TYPE_APPLE 0x9112
10	GL_SYNC_CONDITION_APPLE 0x9113
11	GL_SYNC_STATUS_APPLE 0x9114
12	GL_SYNC_FLAGS_APPLE 0x9115
13	GL_SYNC_FENCE_APPLE 0x9116
14	GL_SYNC_GPU_COMMANDS_COMPLETE_APPLE 0x9117
15	GL_UNSIGNALED_APPLE 0x9118
16	GL_SIGNALED_APPLE 0x9119
17	GL_ALREADY_SIGNALED_APPLE 0x911A
18	GL_TIMEOUT_EXPIRED_APPLE 0x911B
19	GL_CONDITION_SATISFIED_APPLE 0x911C
20	GL_WAIT_FAILED_APPLE 0x911D
21	GLenum glClientWaitSyncAPPLE (GLsync GLsync, GLbitfield flags, GLuint64 timeout)
22	void glDeleteSyncAPPLE (GLsync GLsync)
23	GLsync glFenceSyncAPPLE (GLenum condition, GLbitfield flags)
24	void glGetInteger64vAPPLE (GLenum pname, GLint64* params)
25	void glGetSyncivAPPLE (GLsync GLsync, GLenum pname, GLsizei bufSize, GLsizei* length, GLint *values)
26	GLboolean glIsSyncAPPLE (GLsync GLsync)
27	void glWaitSyncAPPLE (GLsync GLsync, GLbitfield flags, GLuint64 timeout)
28