Written by Wayne Robson and Zap Andersson this shader is aimed specifically at Mudbox vector displacement maps. It currently supports OpenEXR World and Object Space Mudbox Vector Displacement maps. This shader will work on any Mental Ray or Max / Maya material (in Max in the MR slots). More at PsychoCore.com. Also of note, Wayne Robson has posted more information on his upcoming ReDucto polygon reduction application.