Not exactly consumer stuff, but Microsoft has had similar capability to support hot-pluggable GPUs and USB display adapters - Indirect Displays. https://github

Not exactly consumer stuff, but Microsoft has had similar capability to support hot-pluggable GPUs and USB display adapters - Indirect Displays. https://github.com/kfroe/IndirectDisplay https://github.com/kfroe/IndirectDisplay It basically allows you to create a D3D device that delegates it's rendering to another D3D device in the system, and then the output surface can be either dealt with in software (CPU acts as protocol encoder), in hardware (ie. videnc/dec block + PHY hooked over USB/PCIe) or just memory mapped to host OS.