I was wondering how the lava in the UE4 Elemental Demo was achieved, so I opened it up to check. What I noticed was that the UVs of all the lava meshes (Lava River Mesh) were very unique (Lava River UVs), at least to me. Personally I’ve never seen an unwrap like this. I understand why unwrapping a lava river mesh like this creates flowing motion when panning a texture across, but an unwrap like that by hand would take me days.
Can someone shed some light on how to achieve this? I’d have no other approach than to unwrap it by hand, which would be extremely time-consuming compared to the actual shader work that I’d have to put in for the lava. Maybe there is a certain technique or unwrapping software which does this easily? If so, I’d be thankful for any pointers.