Qt Wayland Compositor Examples - Multi Output▲
Multi Output demonstrates how to display the same clients on different WaylandOutputs with different types of composition.
The example opens two different windows, one for each output. When a client connects, its WaylandSurface is displayed in a GridView on one of the outputs, while a ShellSurface associated with the WaylandSurface is displayed with desktop-style composition on the other output.