The Dirt texture generator produces a Dirt Texture Node which is typically used to control the appearance of dirt, dust particles, or worn out effects overlaid on a material.
The Dirt texture parameters are:
Strength
This is the value/lightness (0.1 to 10) of the overlaying material spread across the map.
Details
This is the density (1 to 100) of the overlaying material at certain angles as tiny specs of it are closely distributed across the constrained areas along the surface of the normal.
Radius
The relative size of the map set against the surface directly visible to the viewer. 100 will lead to almost complete coverage by the overlaying material.
Tolerance
This setting can be used to avoid black edges on roughly tesselated meshes.
Invert Normal
An added option to invert the normal and overlaying material.
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