clipka <ano### [at] anonymousorg> wrote:
>      http://bugs.povray.org/task/10

  I suppose something like that could work. One question is, however,
whether the gamma assumption will be done when reading the image file
(ie. the pixel colors will be changed immediately when reading them
from the file), or only when they are needed to calculate a color (ie.
when evaluating the pigment).

  I actually don't know if POV-Ray internally stores images in memory as
bytes (like in the input image itself) or as floats. If it stores them
as bytes then pre-correcting the values will potentially lose some
information. On the other hand, post-correcting them (ie. correcting
them on the fly only when they are required for color calculations) might
make the evaluation of the pigment slightly slower.

  You might also end up having a conflict of interest: If the exact same
image map is used to both create a heightfield and as a pigment, you may
want non-corrected pixels in the first case and corrected pixels in the
latter. (Of course this could be solved just by loading the image twice.)

-- 
                                                          - Warp

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