NEW IN R20
By manipulating object surface Normals, the surface shading can be modified. Minor irregularities such as scratches or pores or wood grain can be simulated without affecting the object’s geometry. Since this is merely a shading effect, the shape of the object will not change. The Bump channel uses grayscales to affect the Normals. Brighter areas will be raised and darker areas sunken.
Here you can link a texture or Material Node. Only the brightness values will be used. Therefore grayscale or monochrome structures can be used.
This setting defines the intensity of the Bump effect. Negative values can be used to invert the brightness defined by the Value setting.
These settings reflect those of the material’s Bump Map in the Diffuse channel’s Normal Mode (see here).