POV-Ray : Newsgroups : povray.binaries.images : Bad antialiasing? Lower values problem [tiny jpeg] : Re: Bad antialiasing? [tiny png] Server Time
3 Aug 2024 02:20:14 EDT (-0400)
  Re: Bad antialiasing? [tiny png]  
From: Mike Raiford
Date: 15 Jul 2004 08:31:52
Message: <40f67938$1@news.povray.org>
Hughes, B. wrote:

> "Slime" <fak### [at] emailaddress> wrote in message
> news:40f5dfc1@news.povray.org...
> 
>>8---8<
>>Have you posted screenshots of the display window or the actual output?
> 
> 
> Rendered image files, which were pasted together into a single picture.
> 
> Here's a png of the simpler example, marked in red showing where the
> blockiness appears always toward bottom right directions. AA options were
> +a0.05 +am1 +j1.0 used. Contrast enhanced to make it show up better. And
> yes, Ross is right, AA method 2 seems to be okay.
> The original rendered file attached, also. All these images began as PNG, I
> hadn't tried other formats until just now and see that it doesn't change the
> artifact.
> 
> Bob H.

Confirmed. It doesn't appear in 3.5, but does in 3.6, In fact.. when I 
changed assumed gamma to 2.2, I could still see vestiges of the artifact.

I have to wonder if it has something to do with the change to do the 
clipping after antialiasing ...

-- 
~Mike


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