func GetBufferPointerv(target uint32, pname uint32, params *unsafe.Pointer) {
	syscall.Syscall(gpGetBufferPointerv, 3, uintptr(target), uintptr(pname), uintptr(unsafe.Pointer(params)))
}
func GetBufferPointerv(target uint32, pname uint32, params *unsafe.Pointer) {
	syscall.Syscall(gpGetBufferPointerv, 3, uintptr(target), uintptr(pname), uintptr(unsafe.Pointer(params)))
}
// return the pointer to a mapped buffer object's data store