NVIDIA GameWorks Integration

I think you’re using an old version of the VXGI integration which indeed overwrites scene color with AO in Ambient Occlusion Mode.

Regarding VXGI and UE 4.11: I started working on the port, but it’s not high priority now. And it looks like Epic made significant changes to the mesh rendering code, so it’s not going to be as easy as “git rebase”.