Hi Martin.
My problem with path is resolved.
Glad to hear it. 
You could perhaps show us what happens in this project or another. 
Please can you explain me the real difference between multipass and bucket except pre-defined antialiasing? ... And what is the pre-defined AA in multipass?
Hmm, good question. I have not found this info even in the source code of Sunflow .And the last question...If you can tell- what's your favourite filter?
My favorite filter is Mitchell. I found that some filters use a blur more or less pronounced compared to others.Here is a ranking based on the visual differences:
1_ blackman-harris, bspline
2_ gaussian
3_ mitchell
4_ triangle
5_ catmull-rom
6_ sinc
7_ lanczos
8_ box (anti-aliasing ignored)
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EnkoNyito
