func IsRenderbuffer(renderbuffer uint32) bool {
	ret, _, _ := syscall.Syscall(gpIsRenderbuffer, 1, uintptr(renderbuffer), 0, 0)
	return ret != 0
}
func IsRenderbuffer(renderbuffer uint32) bool {
	ret, _, _ := syscall.Syscall(gpIsRenderbuffer, 1, uintptr(renderbuffer), 0, 0)
	return ret != 0
}
func IsRenderbuffer ( renderbuffer uint32 ) bool { ret , _ , _ := syscall . Syscall ( gpIsRenderbuffer , 1 , uintptr ( renderbuffer ) , 0 , 0 ) return ret != 0 }
// determine if a name corresponds to a renderbuffer object
determine if a name corresponds to a renderbuffer object