Le 25.10.2007 23:04, Zeger Knaepen nous fit lire :
> "Grassblade" <nomail@nomail> wrote in message 
> news:web.471f9b31e04cdb41654d6f060@news.povray.org...
>> I used the SDL raytracer found in the help file
>> (http://www.povray.org/documentation/view/3.6.1/123/) to refine an idea
>> more or less suggested by Bruno Cabasson.
>> Top picture skips a ray if (square of) distance in colour-space is smaller
>> than an user supplied threshold.
>> Middle pic is the result of the unadulterated SDL raytracer.
>> Bottom pic is the difference of the two.
>> The supplied Skip-a-ray pic requires about 65-70% of the time to render.
> 
> 
> is this a similar technique as used here: 
> http://www.cip.physik.uni-muenchen.de/~wwieser/render/povray/patches/prt-patch/ ?

Looks interesting... good idea, wrong patching.
It should have been an additional quality trace level instead of
replacing antialiasing.
The Vista buffer is an issue too.

-- 
The superior man understands what is right;
the inferior man understands what will sell.
-- Confucius

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