Andrew Coppin wrote:
>
> I'm having to use things like "ambient 10" to get enough
> light in my scene!

Let's say you have a light source simulating a diffuse patch
like in cornell.pov. To make an equivalent ambient source use the
color of the light source multiplied by 2*pi as the object color
with ambient 1 (diffuse 0). Or separate the color and put the
multiplier in ambient term. For the cornell scene that would be 44
so high ambient values are normal.

For a simple test scene these settings will produce roughly equal
quality. Basically use higher count and nearest_count for ambient
sources. These particular settings may not work for your scene.


  radiosity{
    pretrace_start 0.04
    pretrace_end 0.01
    error_bound 0.4
    #local RecursionLimit=2;
    #if(AMBIENT_SOURCE)
      count 1600
      nearest_count 3
      recursion_limit RecursionLimit+1
    #else // for equivalent light_source
      count 200
      nearest_count 1
      recursion_limit RecursionLimit
    #end
  }

_____________
Kari Kivisalo

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