"Felix Wiemann" <Fel### [at] gmxnet> wrote in message
news:3c6ac756@news.povray.org...
> > Why is this such a surprise?
> It isn't. I wrote it only to show the difference between +A0.0 and
+A0.001,
> because the doc says that there isn't a difference.

Why isn't there a difference?  IIRC, 1/1000 is the bounding threshold, which
means that anything ~less than~ 0.001 would have no difference.

<does some quick renders>

In fact, it appears that ~any~ number is enough to put a non-zero value in
for the threshold; that is, no matter what you put for the threshold (unless
it is zero), identical pixels will not be supersampled.

...Chambers

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