GAME TOOLS | VOLUME SLICES TO TEXTURE FOR UE4
This video will show you how to use the Volume Texture ROP to write out a texture that can be used with Ryan Brucks' volume plugin in UE4.
Check out Epic's live stream of the plugin in action - Realtime Simulation and Volume Modelling Plugin | Live Training | Unreal Engine
You can download the plugin from the Epic Forum (needs an Epic account).
And remember you can grab our latest gamedev tools on GitHub.