Changes in version 3.5

The following changes were made in version 3.5 of the shaders. Please note that this list may be incomplete:

The base and physics shaders now use the light lists specified in the geometry instance for illumination if no lights are passed as shader parameters, and/or the illumination mode is set accordingly. (Instance light lists are introduced in version 3.5 of mental ray in order to simplify the setup of illumination.)
The absorbtion in the mib_dielectric shader has been corrected. Formerly, it incorrectly took the distance to the camera instead of the distance traveled through the material into account. This may result in a quite different appearence of the absorbtion.