[CONFIG] .mat still not appearing in the file!

[Acies]

I use CrazyBump for creating my nmaps and spec maps. It works pretty good. It doesn't just generate it right away, it lets you edit the strength and other settings.

By the way, what is the use of a green specular map? I have seen quite a few different colors, but most seem to be greytones.

Yes, crazybump is one of those softwares. One of the errors which occurs in the normal by generating from a photo is that the software reads 'black/dark' parts of the image as 'deep' (cavities) and white parts as heights. So, each seam between each tile is dark - that is read as a depth. All good. However it reads the black tiles as 'depths' and the white tiles as 'heights' when we know that both black and white tiles are heights (of equal size).

The same thing happens in the generated specular. It reads the white tiles as reflective and the dark tiles as not-reflective, when we know that they are of the same material: have the same reflectiveness.

What follows is how I have interpreted the maps (might be wrong). As Traggey pointed out: Red channel = Specular map. Green channel = Gloss map. The specular map defines how much light is reflected (the more white the more reflection). The gloss map defines how the light spreads across the surface (the more white the more focused highlights). Different materials have a different combination of specular intensity and gloss intensity. One would want to have colored speculars.. That is not supported in HPL2 though.