This is yet another test render with Overcaster and Refgen. Refgen was used to render an environment image of the scene, which was used as the Overcaster global illumination map. The Roof, walls and floor are a separate object with shadow casting off, allowing the surrounding overcaster to illuminate the interior.
In addition to the raytraced overcaster, a multitude of spotlights were added, including one set of shadowmapped overcaster lights.
The render time was unbearable at a little over seven hours - maybe even slower than real radiosity ;-)
The scene could naturally be optimized to a little more bearable times... (I used enhanced extreme anti-aliasing with dithered motion bur and raytraced shadows, reflection etc.)
Some color correction and grain were added in photoshop, here's the plain vanilla render.
This was inspired by CoolColJ, who posted a "Radiosity Room With Balls" to the Lightwave binaries newsgroup.
Here's some more tests with OC Innercaster:
In the above pic, only the outmost wall doesn't cast shadows
- this way the extrusions on the walls (or what the heck those pylons should
be called? ;-) also donate subtle shadowing to the walls and ceiling.
The Innercaster rig can be completely removed from the scene
by deleting the Reference box object and it's descendants.
