The Toon Ramp texture works in conjunction with a Toon material. You can connect it to a Toon material's DiffuseAmount of diffusion, or the reflection of light photons at different angles from an uneven or granular surface. Used for dull, non-reflecting materials or mesh emitters. Ramp and SpecularAmount of specular reflection, or the mirror-like reflection of light photons at the same angle. Used for transparent materials such as glass and water. Ramp. It allows color variations across the surface of the toon-shaded model.
Figure 1: The Toon Ramp texture connected to the Diffuse Ramp attribute of a Toon MaterialThe representation of the surface or volume properties of an object.