isn't that how Xorg remoting used to work as well? the display server and client are separate, so whether the pipe was local or remote didn't matter. In principle, Wayland could do it too, I think, if there were a way to synchronize texture handles (the Wayland protocol is also message-based, but IPCs GPU handles around instead of copying bitmaps.)
I guess one downfall is that that your pipe has to be lossless, and there's no way to recover from a broken pipe (unless you keep a shadow copy of the window state, and have a protocol for resynchronizing from that, and a way to ensure you don't get out of sync.)
I guess one downfall is that that your pipe has to be lossless, and there's no way to recover from a broken pipe (unless you keep a shadow copy of the window state, and have a protocol for resynchronizing from that, and a way to ensure you don't get out of sync.)