As part of an ongoing research project we decided to see how far we could push real-time volume rendering using only GLSL shaders. The video shown here demonstrates some of the supported features such as: Multiple iso-surface shading Density plotting Arbitrary oriented contour planes Arbitrary oriented cutting plane The shown video is running on an explicit dataset 256^3 4x16bit floating data on a Nvidia GTX470 graphics card.   [vimeo]http://vimeo.com/44234825[/vimeo]