@pleopard :
I’ve quickly tested Freeworld and it’s very good tool. I think we will buy it to have better terrain but it won’t help in this case.
The road are build at runtime by some road-builders thus we need to implement our own road-rendering scheme.
( By the way, a linux version would be nice (we work on linux) although i know it could be a lot of work. There are very few good terrain editor on linux )
In fact in think I have found the solution, i don’t know if it’s doable in Panda.
the key word : clipping. The idea is to clip the part of terrain the road is on, get the trianglles resulting from the clip, copy them and then texture the copy)
I will ask if it is possible in another thread.
An alternative would be to set a pixel shader. but i must admit I am completely newby when it comes to shader (except the general principle).