https://learn.microsoft.com/en-us/windows/windows-app-sdk/api/winrt/microsoft.ui.composition.compositiongraphicsdevice.createvirtualdrawingsurface?view=windows-app-sdk-1.8
CompositionGraphicsDevice.CreateVirtualDrawingSurface Method (Microsoft.UI.Composition) - Windows...
Creates an instance of CompositionVirtualDrawingSurface.
methodmicrosoftuicompositionwindows