I'm having the same problems with radiosity not working, with the exception
that mine works -some- of the time. I recall once that radiosity worked
after I removed one line, and that was the  -ambient_light Black - line.
Then I put it back and it rendered with radiosity fine. I've yet to find a
pattern to radiosity not working after having tried over 75 renderings on
the same scene with small modifications. I used the settings below, having
the scale of my scene approximately that shown, and it did not correct any
problems. Is there a bug I should know about that may be causing this?

-D.J. Brown
Nieminen Mika wrote in message <35d1958f.0@news.povray.org>...
>In povray.general Jon Berndt <jsb### [at] hal-pcorg> wrote:
>: Very nice, very helpful. I would be interested in seeing the values you
>: used.
>
>global_settings
>{ ambient_light <1,1,1>*4
>  radiosity
>  { brightness 8
>    count 400
>    distance_maximum 1
>    error_bound .2
>    gray_threshold .1
>    low_error_factor .5
>    minimum_reuse .001
>    nearest_count 6
>    recursion_limit 1
>  }
>}
>
>camera { location -z*17 look_at 0 }
>
>// Room
>difference
>{ box { <-12,-9,-19><12,9,12> }
>  box { <-11,-8,-18><11,8,11> }
>  pigment { rgb <1,1,.8> }
>}
>box
>{ <-11,-8,-18><-10.99,8,11>
>  pigment { rgb <1,.5,0> }
>}
>box
>{ <11,-8,-18><10.99,8,11>
>  pigment { rgb <0,.5,1> }
>}
>
>
>
>--
>                                                              - Warp. -

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