Xgen Hair in mental ray
Part of building a better user experience for mental ray in Maya is providing information on how to use features in Autodesk Maya 2015 like Xgen hair.
Sandra and Julia at NVIDIA ARC have written a quick tutorial on using Xgen hair with custom shaders and expressions to control hair rendering in mental ray.
Take a look at their post here. There’s also a comments section if you have a question on the tutorial.