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