ArtStation - Rock UE4 Game Engine Pipeline Tutorial
http://www.artstation.com/tsmith3d/store/o1yp/rock-ue4-game-engine-pipeline-tutorial

A full run through of creating a rock asset pipeline to use along a made from scratch material in UE4. Creating a series of tilling textures in Zbrush to drive different terrain effects for UE4 dynamic rock materials. The tutorial starts with creating tilling textures by hand using paint effects in Maya and sculpting in Zbrush. Then creating a master material in UE4 featuring vertex painting and dynamic Z up coverage. Concluding with creating grass cards and a large rock sculpture to integrate and bring together a pipeline for quick and easy rock environment creation.