Super Smash Bros. 4 Model Project

[Tiberious]

To be specific, the middle is indeed for bumpmaps, but the alpha channel for that is the "shading" map. You'll want to separate that into two different textures.

So how exactly is this "shading map" used? Like, what does it control during rendering?

This question's been asked by a couple different people, but no reply has come yet. RTB, if you can enlighten us, that would be really helpful.