flowchart TD
    App["application"] -->|"QueryInterface for<br/>the configuration IID"| C
    subgraph Device["one Device object"]
        C["ID3D12DeviceConfiguration1<br/>(second base)"]
        D["ID3D12Device15<br/>(primary base)"]
        R["one reference count"]
    end
    C -->|"AddRef, Release,<br/>QueryInterface"| D
    D --> R