Just to be clear, I have just now implemented the C++ code from the following link (https://wiki.unrealengine.com/Oculus_Rift_Separate_View) into my space-ship vehicle-based demo, and it works perfectly. Exactly as you would expect, the camera is free to look around the cockpit via the rift rotation, and that look “offset” is relative to the actual position of the ship, which is free to rotate in any direction, yaw, pitch, and roll. Works like a charm.