Bill Pragnell nous apporta ses lumieres en ce 02/10/2006 15:55:
> It's a tricky one, this. I'm also having this problem with emissive media.
> However, these white artifacts are occurring on container objects which do
> not overlap, and even in reflections of the media in other objects.
> Furthermore, the artifacts are different with every render, even when
> nothing is changed in between. Antialiasing etc does not help. Since my
> container objects are meshes, I originally thought that maybe polygon edges
> were behaving like coincident surfaces or something, but I'm not so sure any
> more.
> 
> I was going to deal with the problem by rendering the image at least double
> the size necessary and then scaling it down in the GIMP, effectively
> antialiasing them out externally, but the single spots I get on reflective
> surfaces will not be ironed out so easily. My problem is that this is for
> an IRTC entry, so editing the artifacts out individually (trivially easy)
> is against the rules...
> 
> I am playing with media settings to see what I can do.
> 
> Bill
> 
> 
Any jitter anywhere? jitter changes randomly from render to render. Try adding 
"jitter 0" in the media deffinition, it may help, at least, the problem pixels 
won't change.
You can also try changing the method used from the default (method 3).
Try increasing the number of samples. If using the default, keep intervals to 1, 
the default value.

-- 
Alain
-------------------------------------------------
Please hassle me, I thrive on stress.

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