Yess, guys, Aiwyn is here with a brand new tecnical question for you!
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In Oblivion's data, there are several n-suffixed textures with the same name of normal textures (as rope.dds and rope_n.dds). These textures looks as bump/displacement maps to me (as I have seen loads of bump maps in my modeling experience) or perhaps light related maps (I have seen a few of them, but I'm quite new on using them, mostly in poser/Daz Studio), but I didn't see any reference to them in the nif models, nor as bump maps nor as other kind of additional/effect maps. So, what are they? How they are used? I have to set up something in the NIF for using them as far as you know?
Plus I wonder about the "_n" thing... underscores "seems to confuse the engine" (I quote Lady Nerevar on a previous topic), so why they have the underscore in the name? Or it's because this kind of maps have an undercored filename the engine gets "confused" when you use it on a normal mesh/texture filename?
Or, last minute thought, are they alternate map for the nighteye vision? If they were bumps the should have been named as "_b" not "_n"...
Anyone knows?