[Poppler-bugs] [Bug 92381] Poppler doesn't display text in separation colorspace with alternate colorspace DeviceGray

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92381

--- Comment #6 from Thomas Freitag <Thomas.Freitag at alfa.de> ---
I run my new patch which I will upload in a few seconds now through a
regression test and encountered 42 unexpected failures. But all of them uses a
Separation colorspace with name Black, and only the gray values are slightly
different. See i.e. bug-poppler25404.pdf:

It uses 
[/Separation /Black /DeviceCMYK 12 0 R]
where the function converts it first to a CMYK value and then we use
GfxDeviceCMYKColorSpace::getRGB()
with a complex matrix multiplication to get it back to RGB
This of course results in different gray values than the new, much simpler gray
calculation!

So this is what I expected and can accept and is even closer to the spec.

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