Hello,
Working on a map for a game, I was not happy with the vanilla roads LODs so I exported one and remade the LODs in Blender, taking care of not messing up the UV. Upon reimporting, I get the base material all correct, but the road lines from the custom material doesn’t follow and get deformated the same way I “extended” the triangles (if I only remove triangles from the Y axis, the lines will spread through the Y axis as well rather than saying the same like the base road material).
The consequence for this is simply lines disapearing from my road for each of my custom LODs, as soon as I do a modification to it in blender. If I only import and directly export a layer from blender, the lines work correctly.
Top half of the road is the original LOD0. Bottom left is slighly modified LOD0. Bottom right is the same as bottom left but with scaled up UV to see if it had any impact on the line (it doesnt). All of these are a single mesh as LOD1.
Here is the control of the lines in the material
Top left is a texture with the continuous, alternated and crossing lines. Other textures are paint and cracks. The texture with the lines is used as alpha to apply the paint texture to the material.
I can use that material for crossings, continuous and alternated lines meshes but I have no idea how it works, so whenever I try to make my lods all line would disapear. I also don’t see why the whole road stays put and clean while the lines go crazy