Dot mapping (or dot gradient mapping) is used as a fast skin shading approximation solution, that is cheap resource-wise.
Asset requirements
dot gradient map texture which is used as a lookup table and describes how the light behaves on a curved surface (it tints the diffuse component).
| Note |
|---|
Note! |
...
The texture sampling needs to be set to Clamped. The U Axis in texture space is computed from the dot product of the surface normal and the incoming light direction. |
a skin texture RGBA (GBA not used) where Red channel is used to control the V axis in texture space of the dot map texture.
dot map texture is provided with the Animaze Editor
...