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