private extern static int ovr_freepie_read(out OculusVr6Dof output);
private extern static int ovr_freepie_read(out OculusVr6Dof output);
private extern static int ovr_freepie_read(out OculusVr6Dof output);
private extern static int ovr_freepie_read(out OculusVr6Dof output);