POV-Ray : Newsgroups : povray.general : Radiosity for rendering computer monitor? : Re: Radiosity for rendering computer monitor? Server Time
11 Aug 2024 21:21:33 EDT (-0400)
  Re: Radiosity for rendering computer monitor?  
From: Johnny Smith
Date: 2 May 1999 07:23:22
Message: <372C2819.9349D884@telebot.net>
Vahur Krouverk wrote:

> Hello!
>
> I'd like to know, whether someone has used radiosity for rendering scene
> with computer monitor in dark room? I want to create such scene and it
> seems just to ask for radiosity. But if I use radiosity, then image on
> computer screen gets smeared and patchy

    I haven't used Radiosity that much... but the first thing that came to
mind was the radiosity settings themselves.  The doc's plainly say that this
sorta thing can happen if the param's aren't set high enough.
May I suggest really CRANKING the settings?   (note,  this is SLOW,  REALLY
SLOW!)  Pay close attention,  as some of these will probably have to be
changed based on the distance/scale/units of your particular scene.


 radiosity {
               count 1990                // Ensure that we get good,
accurate samples
               error_bound 0.1          // And calculate lots of them.
(more important than count)
               gray_threshold 0.5
               distance_maximum 4         // Scene-dependant!
               low_error_factor 0.7        // force many extra samples to be
calculated...
               nearest_count 9               // so we can average them
together for smoothness
               minimum_reuse 0.001     // get quite tightly into corners
               brightness 3.3                // doesn't really matter.  Not
used in final output.
               recursion_limit 1           // Try this = 2, but drop the
count to maybe 300
            }


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