This is pretty cool. The technique reminds me of a similar rendering trick outlined in this Nvidia presentation (http://developer.download.nvidia.com/presentat

This is pretty cool. The technique reminds me of a similar rendering trick outlined in this Nvidia presentation (http://developer.download.nvidia.com/presentations/2010/gdc/Direct3D_Effects.pdf http://developer.download.nvidia.com/presentations/2010/gdc/...)