POV-Ray : Newsgroups : povray.newusers : Amount of AA : Re: Amount of AA Server Time
29 Jul 2024 12:14:46 EDT (-0400)
  Re: Amount of AA  
From: JYR
Date: 10 Nov 2005 10:30:00
Message: <web.43736737bd0b3341e8d525f60@news.povray.org>
"the_ajj" <nomail@nomail> wrote:
> Hi,
>
> What is the maximum level of AA that can be used when rendering?  The
> standard in the .ini file is 0.3 but can it be higher?
>
> Thanks.

The value is a threshold, expressed as a ratio ranging from 0 to 1. The
lower the value, the higher the "level" of AA. With a value of 0, each and
every pixel in the scene is antialiased, whatever its contrast against its
neighbouring pixels. With a value of 1, only a perfectly black pixel
against a perfectly white one (or the opposite) would be antialiased.
If you have a strong pattern in your scene, such as wood, you might want to
soften moire artifacts by using jitter_amount greater than 1. Basically it
tells antialiasing to work not on one pixel at a time but to an area
slightly larger, thus "blurring" somewhat possible artefacts.
Just to be clear, please note that AA is not at all a post-process blurring
or softening process a la Photoshop. It actually makes Pov Ray compute more
information to avoid jagginess.

Hoping this helps!

JYR


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