In many Materials within Resonite, a process/technique called Channel Packing is used. Channel Packing is a way of using the color data within images to represent information which Resonite Materials can use. Each Pixel within these images is used as a value for a particular part of a Material.
For example in this image: File:BlackWhiteGradient.jpg
The Black parts could represent a value of 0 and the white parts represent a value of 1.
TODO: I'm working on this over the next few days - Prime
TODO: Apparently not! - User:Zandario 2 years later