POV-Ray : Newsgroups : povray.general : A good blurred reflection with bumps : A good blurred reflection with bumps Server Time
3 Aug 2024 16:18:53 EDT (-0400)
  A good blurred reflection with bumps  
From: Severi Salminen
Date: 4 Jan 2004 18:15:54
Message: <3ff89eaa$1@news.povray.org>
Nothing new, but:

In FAQ at 
http://tag.povray.org/povQandT/languageQandT.html#blurredreflection it 
is suggested that a good blurred reflection can be achieved using 
averaged textures. That is true, but they can also be achieved a lot 
faster using normals, for example:

finish {reflection 0.6}
normal {
    bumps 0.16    // This obviously controls the amount of blur
    scale 0.00001 // This must be small enough compared to scene scale
}

The key issue is to use good antialiasing with enough depth. Without AA 
it looks very, very bad no matter what values given above. With AA 
method 2 and depth=4 it starts to look very good. I think this should be 
added to FAQ?

Severi S.


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