Voreen is an open source volume rendering engine which allows interactive visualization of volumetric data sets with high flexibility when integrating new visualization techniques. It is implemented as a multi-platform (Windows, Linux, Mac) C++ library using OpenGL and GLSL for GPU-based rendering.
You can grab binaries and source code HERE.
Quick test of the fancy.vws project
Their render engine is really slow I don’t understand why because it shouldn’t.
>Their render engine is really slow I
>don’t understand why because it
>shouldn’t.
Voreen is the fastest GPU volumetric ray-casting engine; it’s best (GPU based) if you need high quality interactive VR. For interactive low quality you may find better VR engine based on old fashion Texture Mapping volume rendering technique.