Here is a small demonstration of the implementation of LuxRays renderer into Softimage.
This aims to present the code I provided on si-community (http://www.si-community.com/community/viewtopic.php?f=27&t=3205&p=26994#p26994) in the “Resourcedump” thread”.
I want to warn you that this is an old version of LuxRays and an old version of the softimage plugin (2 years ago).
I stop development of this plugin 2 years ago. However luxrays has since become much more efficient today (http://www.luxrender.net/wiki/LuxRays).