On 19.12.2010 21:09, Warp wrote:
>    I don't remember if this has been discussed before, but the new gamma
> handling might cause headaches when using color maps and other interpolated
> maps.

It has been stated numerous times that assumed_gamma should not be used 
for artistic purpose. What you actually want is a non-linear gradient 
and there are quite a lot possibilities for this e.g.

pigment {
   spherical
   poly_wave 2
   color_map {
     [0 rgb 0]
     [1 rgb 1]
   }
}

or use a different wave function or write your own function or do 
whatever you like but it isn't  - and never was - a good idea to misuse 
assumed_gamma for such a purpose.
And you did read the message that assumed_gamma is deprecated?

>    I fear that most people will simply learn to always write the magical
> line "global_settings { assumed_gamma 2.2 }" at the beginning of every
> scene (or whatever will end up being the proper way in the final version),
> making the whole gamma correction thing rather moot.
>

And I'm well aware that a lot of POV-Ray users (among them some of the 
most well known) did in past 3.6 times always write
global_setting {assumed_gamma 1.0}
into the scene file. No trouble for them.

-Ive

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