POV-Ray : Newsgroups : povray.newusers : mipmapping : Re: mipmapping Server Time
30 Jul 2024 00:21:07 EDT (-0400)
  Re: mipmapping  
From: Tim Nikias
Date: 11 May 2005 15:15:38
Message: <428259da@news.povray.org>
>   Antialiasing doesn't help too much when there are dozens of imagemap
> pixels in one result image pixel. It helps a bit, but does not give
> such a good result as trilinear interpolation.

Trilinear between what? The four corners of the pixel? You'll lose some
information then (just imagine: 4 black pixels on the texture with white in
between! *gosh* :-)

But seriously, what would you want to interpolate amongst? I guess,
depending on the detail of the texture and how much information you'd want
to place on a single pixel, downsampling it before using it (a la
mipmapping) is the best way to go. Generally though, like when you're
working with procedural textures, antialiasing is really the only way out,
unless script/program something new. Especially when we're talking about a
newbie. :-)

Regards,
Tim

-- 
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>


Post a reply to this message

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.