If a map had many missing wall textures, it could take a very long time for the material fixer's algorithm to get through all of them. Pending a better solution, a missing top/bottom material now simply reverts at render time to the floor/ceiling texture.
Performance: Handling of missing materials
If a map had many missing wall textures, it could take a very long time for the material fixer's algorithm to get through all of them. Pending a better solution, a missing top/bottom material now simply reverts at render time to the floor/ceiling texture.