George Pantazopoulos wrote:
> 
> Later when this sample is a candidate for reuse, these statistics are used
> to calculate the effective radius of the sample to see how reusable it is.
> The optimized sample set used by default has fewer rays as the angle to the
> normal gets larger. This means that low-lying objects near a sample point
> can get missed by the gather rays. The effect of this would be a too-large
> radius of reuse, resulting in artefacts.

The non-uniform density of samples is not specific to the precomputed 
sample set, you would also use that when using random directions.  I 
don't think the effect you describe is a common source of artefacts but 
if you have an example for it i'd be interested.

Christoph

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