Quoting j_mach_wust j_mach_wust <[EMAIL PROTECTED]>:
The PNG file format specification permits a similar
indexed encoding scheme as the GIF format;
Unlike an indexed GIF, an indexed PNG allows
semi-transparency. I thought I was able to produce
such semi-transparent indexed PNG with GIMP. I don't
know how I did it.
It appears that former versions of GIMP were not able
to produce semi-transparent indexed files at all (to
be saved as PNG). My question is: Is it now possible
to have semi-transparent indexed files (I thought it
were as I can remember I did it)? If it is possible,
then how to do it?
I misunderstood what you were asking before, sorry.
My understanding of the PNG indexed format is each color of the
palette can have a different transparency level assigned to it. If
this is true, there should be a way to duplicate the colors of your
palette with varying levels of opacity. For a B&W palette, you could
have 128 levels of opacity for each, for a 4-color palette, 64 levels,
I am unaware of the GIMP possessing such a capability but that is not
to say it doesn't exist. :)
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