POV-Ray : Newsgroups : povray.macintosh : Re: Wavelength to RGB converter? : Re: Wavelength to RGB converter? Server Time
28 Apr 2024 17:47:41 EDT (-0400)
  Re: Wavelength to RGB converter?  
From: Ian J  Burgmyer
Date: 6 Mar 2003 23:02:02
Message: <3e6819ba$1@news.povray.org>
Thorsten Froehlich's furious key-hammering produced this:
>> The problem isn't that rendering is slow, it's that POV-Ray is only eating up
>> a
>> fraction of CPU time (I did a check with no other active applications using
>> top
>> and it only seems to utilize a maximum of 25%).
> 
> Well, why do you worry about some incorrect display, that isn't even meant
> for what you are using it (not suitable at all), tell you?  The only thing
> of interest is the result, which is the render and parsing time, which does
> not depend on what some stupid display tells you!

That's the thing -- because of it only using a fraction of my CPU time it takes
the system a ridiculous amount of time to render a very simple scene.  I don't
remember specifics, but my Pentium III 750 system can render very basic lit
sphere scene (source below) in a second.  OTOH, my G4-733MHz (which actually
renders faster than the x86 when both platforms are using MegaPOV) took over
15 seconds to render it.

This is the scene I used.
light_source{<15,8,-25>rgb 1}sphere{z*5,1pigment{rgb 1}}

As I said, I haven't tried 3.5.1 (though I'm sure that one will work much
better), only 3.5.0 and MacMegaPOV.  I'll have to remind myself to give that a
try over the weekend...

-- 
/*^*/light_source{100*<-5,2,-5>2}#macro I(i,n)#while(strlen(i)>=n)#local A=asc(
substr(i,n,1));#local a=asc(substr(i,n+1,1));cylinder{<div(A,8)-12,mod(A,8)-4,4
><div(a,8)-12,mod(a,8)-4,4>,0.1pigment{rgb z}}#local n=n+2;#end#end I("ScUe[]"1
/*<*/)I("mkmtlttk"1)//@_$#!,:<"Thhis polysig brought to you by Ian Burgmyer :)"


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