The compositor would have to talk to the virtual GPU driver to allocate additional surfaces on the host and make them available to the guest. The next best alt

The compositor would have to talk to the virtual GPU driver to allocate additional surfaces on the host and make them available to the guest. The next best alternative currently is looking glass[0]. Linux host with GPU1, Windows guest with GPU2 via pass-through and then copy the framebuffer from the guest to the host. [0] https://looking-glass.hostfission.com/ https://looking-glass.hostfission.com/