POV-Ray : Newsgroups : povray.advanced-users : Weirdness with +UA : Re: Weirdness with +UA Server Time
4 Oct 2024 16:59:40 EDT (-0400)
  Re: Weirdness with +UA  
From: Alain
Date: 4 Mar 2007 10:13:56
Message: <45eae234$1@news.povray.org>
Orchid XP v3 nous apporta ses lumieres en ce 04-03-2007 06:42:
>> Please post a scene.  My specular highlights have always shown up when 
>> using +UA.

> Minimal:

> camera
> {
>   location <0, 0, -3>
> }

> light_source {<-3, +2, -5>, colour rgb 0.8}
> light_source {<+3, -2, -5>, colour rgb 0.5}

> // Background
> object
> {
>   sphere {0, 1}
>   scale <1.5, 1.5, 0.1>
>   translate +0.2*z
>   texture
>   {
>     pigment {colour rgb <1.0, 0.8, 0.5>}
>     finish
>     {
>       ambient 0
>       specular 0.8
>       metallic 1
>       reflection {0, 1 fresnel}
>     }
>   }
>   interior {ior 1.5}
> }

> If I render this without +UA, specular hilights show up. If I add +UA, 
> the highlights show up on all of the mosaic preview passes, then 
> suddenly vanish on the final pass. (Hilights also don't show up in the 
> produced PNG file.)
Just tested your scene. The highlights do appears hith and without +ua. The 
difference, is that I don't use mosaic preview. Try turning that OFF, anyway, 
it's not realy usefull and increase the rendering time. I only get the mosaic 
when doing radiosity during the pretrace steps.

-- 
Alain
-------------------------------------------------
If you're ever about to be mugged by a couple of clowns, don't hesitate - go for 
the juggler.


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