Hi there,
There are a couple routes here, depending on what you want. But essentially, you need to create a material in UE4 and apply it to your landscape.
- Export a high res terrain texture from World Machine and apply that material to your terrain.
- Export weightmaps and use to choose between landscape materials.
Creating a landscape material for UE4 is an entire conversation to itself, mostly unrelated to World Machine. But essentially for #1 you can create a texturemap-based material just like you’d create for any other object. For #2, you’ll need to use the landscape material system. Here’s a workflow guide for doing so:
https://wiki.unrealengine.com/World_Machine_to_Unreal_Engine_4_-_In_Depth_Guide