"Bald Eagle" <cre### [at] netscapenet> wrote:
> "Bald Eagle" <cre### [at] netscapenet> wrote:
> > It seems to me that the color conversion code is in
> > source/base/image/colourspace.cpp
>
> This is what was in the source code, which seems to be exactly what you have.
> Maybe it has something to do with the way POV-Ray does math through SDL vs
> through compiled code (float vs double, etc)
>
> #declare SRGB_Encode = function (C) {
>  select (0.0031308-C, C*12.92, C*12.92, 1.055 * pow (C, 1/2.4) - 0.055)
> }
>
> #declare SRGB_Decode = function (C) {
>  select (0.04045-C, C/12.92, 1.055 * pow ((C+0.055)/1.055, 2.4))

Now, hearkening back to clipka's point,
http://news.povray.org/povray.advanced-users/message/%3C58cb2917%241%40news.povray.org%3E/#%3C58cb2917%241%40news.povra
y.org%3E

All we would need to do is include a multiplier m as a second argument, and
multiply the result by that.

The other issue that was brought up (somewhere, by someone) is trying to use
sRGB values in a color map - because the color_map will interpolate linearly,
whereas the sRGB color space is nonlinear.

I have no idea if we have control over color_map interpolation - a user_function
would be useful....  I have a real problem trying to search and find these
things....

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