Handle display mode changing for the single monitor-single window case, allowing Duplicate mode Rift usage.
Refactor: extract function.
Extract the DrawScene function to tease it apart from the FBO bind.
Allow user to toggle post-process distortion with the F2 and F3 keys in the single window case.
Go ahead and display AntTweakBar over the Rift-formatted single window view. It's not that bad.
Use F keys starting with F1 to cycle through display modes of the corresponding monitor.
Default Rift monitor's window to stereo with distortion.
Determine usage of the distortion shader from display mode parameter.
Change first parameter of AppSkeleton's display to indicate control window status so we don't draw redundant tweakbars over secondary Rift displays.