I'm against this code- I can't really understand what's the intention of this 
code is- destroying glossiness? 

I would like to see a change of the colors depending of the clouds setting- I 
think I can remember that the color changed with the weather settings in 
plib-versions. Example: less glossiness and more greyish colors on 
thunderstorm/ rainy day
Maybe possible?
Regards
HHS
 

>This change doesn't look right to me:

>  +    float av = thesky->get_visibility();
>  +    if (av > 45000.0) av = 45000.0;
  +    float visibility_norm = av/45000.0;

  -    float specular = _specular_tbl->interpolate( deg );
  +    float specular = _specular_tbl->interpolate( deg ) * visibility_norm;

So

  visibility 0m     ->  specular * 0
  visibility 22.5km ->  specular * 0.5
  visibility 45km   ->  specular * 1


Why would a visibility of 22 km only give me half the specularity
of a visibility of 45 km? On an object that stands a few meters
in front of me! That basically means, (almost) no more glossiness.

m.

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