Bob Hughes wrote:
> 
> Isn't much changed, well that's a white lie.  The ambient is dropped to near
> zero for the radiosity images but that's a well known fact (I just tend to
> leave it non-zero though, very low).  And the lighting is changed somewhat
> as well as the sphere (not sky_sphere) for the sky because of the drastic
> differences when ambient is dropped.  In other words, ambient and diffuse
> for the sky is .6, .6  in radiosity and .67, .33 without.

Set the sky ambient to 1 and diffuse to 0.

> #if (Use_MP & Rad = yes)
>  ambient_light <.1,.05,.025>

Yeah, I'd kill that ambient. If you're doing this right, you really
shouldn't need it, it'll just wash out whatever deep shadows you DO end
up with.

> pretrace_start .08
> pretrace_end .01
>          media off
>          normal on
>          count 100 // or 50 // may be too low
>          nearest_count 5
>          error_bound .321
>          low_error_factor .321
>          gray_threshold .2
>          recursion_limit 2 // or 1
>          minimum_reuse .0167
>         // brightness 1.333

Unless hyper-accurate shadowing is a necessity, and I don't see why it
would be for this scene, error_bound will be just fine between 0.6 and
1. Count 50 is plenty; a high count is best when you have small, bright
objects, or a very "noisy" scene, but you have a relatively simple one
with an entire lit hemisphere. You could even go down to 30. Set the
low_error_factor to 1, you're not going to need it (in my testing, it's
pretty useless). Recursion_limit 1 is plenty, I wouldn't mess with the
minimum_reuse, and brightness could go as high as 1.667 or so.

You could even set pretrace_start to .01 if you want to shave an extra
several seconds off; I haven't found that multiple passes help, provided
that the one pass you DO use is fine enough.

Try that and see how it goes. :)

-Xplo

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