Here is my 1st try with the simulation just to see if
it would benefit from tonal range modification. Maybe
later.

The white sources were replaced by realistic colors and
intensities for sun and sky. I used diffuse 0.6 for the
linearised sandstone texture maps and diffuse 0.8 for the
floor. Other textures were diffuse 0.6. I assumed the maps
to be sRGB.

http://www.pp.htv.fi/kkivisal/church1.jpg

Took 25 minutes on 1GHz AMD without the glass objects.

global_settings{
  assumed_gamma 1.0
  radiosity{
    pretrace_start 0.04
    pretrace_end 2/400
    count 200
    recursion_limit 2
    nearest_count 3
    error_bound 0.5
  }
}

_____________
Kari Kivisalo

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