GL_REGAL_enable
https://github.com/p3/regal/tree/master/doc/extensions
GL_REGAL_enable
	GL_ERROR_REGAL 0x9322
	GL_DEBUG_REGAL 0x9323
	GL_LOG_REGAL 0x9324
	GL_EMULATION_REGAL 0x9325
	GL_DRIVER_REGAL 0x9326
	GL_MISSING_REGAL 0x9360
	GL_TRACE_REGAL 0x9361
	GL_CACHE_REGAL 0x9362
	GL_CODE_REGAL 0x9363
	GL_STATISTICS_REGAL 0x9364
