This is the WinOSi reference rendering of the Illum2.vmd test scene. It shows full global illumination with an area light casting soft shadows with penumbra, caustics, specular reflection and refraction, diffuse indirect illumination with color bleeding, texture mapping and non-polygonal primitives with perfect anti-aliasing.
Rendering time was about 40 hours on a 1.7 GHz Pentium 4 for the 800x600 Image.

I am very curious what other global illumination renderers are doing with this test case. I would be very pleased if someone could render it with Mental Ray, Brazil, etc. and send me the results. Visit the Download Section and get the scene file in various formats for importing it into your favourite renderer.

Another comparison with this test scene can be found at www.buildart.com/render_comparison.htm.
Currently it shows renderings of Truespace, Bryce, Art*lantis and Archicad with AV-Works.