9.5.2

Table Of Contents
884 CHAPTER 18
THE SHADERS 885
Lights
Use this setting to dene which light sources should be included or excluded for ChamLum
calculations. This setting applies to ChamLum only. Normal lighting and shadow casting will not be
affected by this setting!
Backlight
Backlight allows you to gather illumination from the back face of an object. This gives the ability to
create translucency effects with backlighting, such as rice paper or a thin leaf lit from the opposite
side complete with shadowing.
The most likely place to use Backlight is in the Luminance channel.
Color
This is the diffuse color of the backlit surface.
Algorithm
This is the illumination algorithm to be used. Internal is the CINEMA 4D internal illumination model,
Oren-Nayar is an alternative illumination model that is meant to look more like a rough surface.
Illumination
Maximum illumination intensity.
Roughness
Only applies to the Oren-Nayar illumination algorithm. The higher the value the rougher the surface
appears.