func DebugMessageCallback(callback unsafe.Pointer, userParam unsafe.Pointer) {
	syscall.Syscall(gpDebugMessageCallback, 2, syscall.NewCallback(callback), uintptr(userParam), 0)
}
func DebugMessageCallback(callback unsafe.Pointer, userParam unsafe.Pointer) {
	syscall.Syscall(gpDebugMessageCallback, 2, syscall.NewCallback(callback), uintptr(userParam), 0)
}
func DebugMessageCallback ( callback unsafe . Pointer , userParam unsafe . Pointer ) { syscall . Syscall ( gpDebugMessageCallback , 2 , syscall . NewCallback ( callback ) , uintptr ( userParam ) , 0 ) }
// specify a callback to receive debugging messages from the GL
// Parameter callback has type C.GLDEBUGPROC.
specify a callback to receive debugging messages from the GL Parameter callback has type C . GLDEBUGPROC .