Hey there, I am following this awesome tut showing how to use tiled terrain in Unreal, it's working great except for the material part. The instruction states to: [...] Create a Landscape Layer Weight node for each weightmap you exported from World Machine. [...] Connect the output of the layer you want on the bottom to…
The reason it wasn't showing in preview is because the default preview mesh does not have a landscape layer to it. To solve this, you just need to select LandscapeLayerWeight nodes and set the option "Preview Weight" in their parameter. Solved!