Refraction
Refraction refers to the bending of light as it passes through a transparent surface in a Ray Trace renderer such as IRender nXt .
![](http://wiki.renderplus.com/images/5/50/Refraction-skp.jpg)
This model is rendered in SketchUp, with no refraction from the transparent glass.
![](http://wiki.renderplus.com/images/7/70/Blurry.jpg)
This is the same model run through
IRender
. Notice how the stone wall is refracted as it passes through the thick glass.
The Index of Refraction is set in the Material Wizard