How might I go about generating a normal map from a lighting profile(light map)? I saw "Sprite Lamp" however, if possible, if there is some sort of math I can do myself to convert a lighting profile to a normal map, how might I go about doing that? Or convert multiple lighting profiles to one normal map, how would I do that?
I don't have $35 to shell out currently, so I'd like to generate the normal maps myself. If you don't know what Sprite Lamp is, check out this link: http://steamcommunity.com/sharedfiles/filedetails/?id=193335844