func BindSampler(unit uint32, sampler uint32) {
	syscall.Syscall(gpBindSampler, 2, uintptr(unit), uintptr(sampler), 0)
}
func BindSampler(unit uint32, sampler uint32) {
	syscall.Syscall(gpBindSampler, 2, uintptr(unit), uintptr(sampler), 0)
}
func BindSampler ( unit uint32 , sampler uint32 ) { syscall . Syscall ( gpBindSampler , 2 , uintptr ( unit ) , uintptr ( sampler ) , 0 ) }
// bind a named sampler to a texturing target
bind a named sampler to a texturing target