Am 10.05.2010 12:31, schrieb Dave Blandston:

> Here's a complete but simple scene demonstrating the situation. Version 3.7 will
> eventually render the scene, but when the object is used in a more complex scene
> the radiosity step goes on seemingly forever. There is one more object I've come
> across that causes the same phenomenon, which I can post as well if you wish.

Hm... is the other a sphere_sweep object as well?

At present I'm pretty much inclined to think that this is not an issue 
of radiosity /per se/, but rather a general performance issue with 3.7's 
implementation of sphere sweeps, which is only emphasized by the numer 
of rays shot for radiosity.

As far as this particular object goes, I suggest you try using a set of 
half-tori instead of the sphere_sweep.

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