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Reverting earlier commit made to attempt to fix bug 692235. While
this change does give the display device a much nicer palette
to work with in 8 bits, it will break with all code that currently
exists to interface to the display device, such as gsview, as the
palette is not exported with the data.
Due to the looming release and the questions remaining to be answered
on the bug, we pull the change for now.
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The display device uses an RGBK space for 8 bit rendering. Currently
this corresponds to a palette of 96 colors; 2 bits each for R,G,B,
supplemented by 16 greys.
This review alters it to use a 6x6x6 RGB cube, supplemented by 40 grey
levels.
In fact, this is slightly wasteful as we repeat the black and white
representations as color and as greyscale, but it's a huge improvement
on what we had before.
No cluster differences expected as we don't test the display device.
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device.
git-svn-id: http://svn.ghostscript.com/ghostscript/trunk@12041 a1074d23-0009-0410-80fe-cf8c14f379e6
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