Linear distribution of TexCoords may be expected for the null driver… have you tried plugging in your DK1 or DK2 & see if something else happens?
I believe an Application (E.g. VRApplication) will still be needed for handling of the guiNode(), at the very least.
What is going on with the red boxes?
Shouldn’t the 3D effect be generated by having 2 cameras, separated apart by the inter-pupillary distance value? Is each FrameBuffer not the output of each camera…?