# Why is there 2 viewport in D3D12Fullscreen sample? What is sceneviewport for?

In Microsoft's DX12 sample, there are 2 viewports (with 2 scissors, and 2 heap descriptors).

It seems that only the postviewport is used (at each resize, LoadSizeDependentResources() is called, which updates the postviewport).

So, in that case, what is the sceneviewport for?