func GenVertexArrays(n int32, arrays *uint32) {
	syscall.Syscall(gpGenVertexArrays, 2, uintptr(n), uintptr(unsafe.Pointer(arrays)), 0)
}
func GenVertexArrays(n int32, arrays *uint32) {
	syscall.Syscall(gpGenVertexArrays, 2, uintptr(n), uintptr(unsafe.Pointer(arrays)), 0)
}
// generate vertex array object names