NVIDIA GameWorks Integration

[Mike.Skolones]

@Xerithas;302418

As far as I know there’s just about zero most of will be included in an official engine release, at least until a CPU/GPU vendor agnostic implementation is finished.
It’s not hard to compile these branches though and there are and will be merged branches with different mixes of GameWorks features.

HairWorks and VXGI are both implemented in, hence they are ‘vendor agnostic’; yet I don’t think they will find their way into mainline UE4 anytime soon.