m_combinedLod in Road Textures - how is it generated?

[pestilenz]

I'm working on a road texture mod and I also wanted to replace the lod textures. I managed without effort to load the texture to the _MainTex of the according m_lodMaterial.
Unfortunaltely those textures never get shown, instead a file like the one attached is used by CS. It was found in the m_combinedLod. This texture seems to be automatically generated, it varies depending on which additional roads I have activated with NExt.

So my question is: what do I need to do to get custom LOD textures in CS to work?
I assume I need to load the lod textures in the m_lodMaterial, but what are the next steps to get a new atlas (?) generated?

 

[SamsamTS]

I don't know if that's what you need but you can take a look at that : https://github.com/SamsamTS/CS-FineRoadTool/blob/master/FineRoadTool/ResourceLoader.cs
Especially the line #31 where I instantiate a new material.

Hopefully you'll find something useful.
Good luck with your mod.