ID3D11DeviceChild similarly to a few other related interfaces offers methods including: ID3D11DeviceChild::GetPrivateData – Get application-defined data from a device child. ID3D11DeviceChild::SetPrivateData – Set application-defined data to a device child and associate that data with an application-defined GUID. ID3D11DeviceChild::SetPrivateDataInterface – Associate an IUnknown-derived interface with this device child and associate that interface with an application-defined GUID.…