Actually when using an RVT material on landscape, the LOD generation tool (world composition landscape) is using RVT to generate texture maps for each LOD instead of the actual material, resulting in extra low mipmaps textures for LODs.
The only solution I’ve found is to add a static bool switch in the landscape material to turn off RVT before generating LODs and turn it on back when done. Obviously it means recompiling every shader after each operation (and there can be a lot while you alternate play test and landscape modifications).
We’ve passed this along to the team, Haoris. Thank you!
