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If you render LDView’s POV output using the POV-Ray 3.7 beta release, you will
see that the colors all look washed out. This seems to be due to a difference
in the way that POV-Ray 3.7 handles gamma correction. There are two things that
you need to do to fix this:
- Add Display_Gamma=1 to your command line options (there’s a box in the toolbar in the Windows version for setting command line options). This should fix the colors in the preview window, but not the output file.
- Create an include file that contains the following line and set that include file as the top include in LDView’s POV export settings:
global_settings { assumed_gamma 2.2 }
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Note that you can just manually paste that into the top of your file, but that
gets old pretty fast. Also, if you already have a top include, just add the
above line to it.
I’m not sure what the long-term solution to this problem is. POV-Ray 3.7 gives
a warning that it doesn’t support the assumed_gamma setting, and yet the
setting still has the desired effect.
Thanks go to John Winning for info on the assumed_gamma setting.
--Travis Cobbs
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In lugnet.cad, Travis Cobbs wrote:
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If you render LDView’s POV output using the POV-Ray 3.7 beta release, you
will see that the colors all look washed out. This seems to be due to a
difference in the way that POV-Ray 3.7 handles gamma correction.
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I also discovered this a while back while working on LD4DStudio 1.1, it’s seems
weird at first. But the change is really logical when you think about it.
They basically moved the gamma correction to the ini/command line because it
only applies to the render target not the scene it self.
The color difference comes from the fact 3.6 used a correction of 2.2 by default
if you set the correction to the new default in 3.6 you get the exact same
colors.
2.2 is the Windows default by the way. This is why they don’t use this default
anymore (not everyone uses Windows).
Roland
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