Quote: ""yes it is, put down some stock segments(the ones that came in the ww2 or scifi themes) and look at it in game, every few segments there is something added to the texture""
this is correct.
If you look at the segments fpe,you will find that it references the texture in the texturebank.
For example,the 'bunker fighting area low' refs 'texturebank-ww2-floors-concrete-f_e_
01_d2.tga'.
There are other very similar but different textures, f_e_
02_d2.tga', f_e_
03_d2.tga'.
I believe the engine itself randomises these textures but only the first one need be called.