Menu Normal attributes

Normal section in the material Attribute Editor
Rounded Corner
Rounded corners are a procedural bump mapping effect which alters the normal near geometric edges to create a rounded corners look. Optionally, the effect can be applied to corners that intersect different materials.
Sets the radius of the round corner effect in world space units.
Determines how round the edge will look. The valid range is between 0.0 and 1.0. A value of 0.0 chamfers the edge and a value of 1.0 gives a rounded edge
Blend With other Materials
Applies the round corner effect to intersection areas of different materials.
Adds a bump map which effects the overall material.