Here is the image referred to by my above reply:
 http://news.povray.org/povray.binaries.images/thread/%3C418129b4%40news.povray.org%3E/?ttop=203630&toff=100
>
> He means the image I posted, using one of Tim Nikias' scenes. For an
> experiment I was doing, I modified POV-Ray so that it would calculate
> radiosity for every pixel (first bounce), and then essentially do path
> tracing for subsquent bounces.
>
> Disabling the irradiance caching feature prevented fine details in the
> "caustics" from getting smoothed out and lost, at the expense of longer
> rendering times, and graininess. (However, It also made it much easier to
> parallelize a radiosity render!)
>
>
> George
> http://www.gammaburst.net

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