[Unreal 4] Terrain Blending Tool (inspired by Star Wars: Battlefront) http://polycount.com/discussion/181140/unreal-4-terrain-blending-tool-inspired-by-star-wars-battlefront Result
Everything Procedural, skip to 60 minutes for an amazing talk, its all really cool though! https://youtu.be/hyhH0GKCW7A?t=3586 I guess its already done in Star Citizen but its interesting the way the technology is going, moving to a streaming version as he mentions in the talk. https://www.youtube.com/watch?v=pdCFTF8j7yI