Menu Surface attributes

Surface section of the ifmDielectric material
Thin walled
Turns the thin-walled attribute on or off. When selected, refracted light is treated as directly leaving the material again. When unselected, objects need to be closed to have correct refractions.
Refraction Index
Light that goes through an object is bent. The value set for refraction describes this effect. The shader uses Fresnel's formulas for dielectric interfaces to achieve this.
Reflection Color
Sets the reflected color. This attribute also influences the color of the reflected caustic effects.
Sets the roughness of the material surface. A value of 0 describes a clear, transparent surface; a value of 1 sets a rough surface. Roughness does not appear inside the material; it is an effect that appears on the surface.
Bump Map
Adds a bump map to the material.