[Poppler-bugs] [Bug 34053] Poppler ignores rendering intents and always uses INTENT_RELATIVE_COLORIMETRIC

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=34053

--- Comment #22 from Thomas Freitag <Thomas.Freitag at alfa.de> ---
(In reply to comment #21)
> ok, maybe something was wrong on my side, try to have a go at fixing the
> crash and once that's sorted we can go again at it and see if i can still
> reproduce the wrong coloring

You still will be able to reproduce the wrong coloring in
altona_visual_1v2a_x3.pdf. I digged into it and already encountered two
problems:
1. When the patch should completely support rendering intents, we need four
versions of XYZ2DisplayTransform, one for each renderíng intent and we must
support this in GfxCalGrayColorSpace, GfxCalRGBColorSpace and (which is
important for this PDF) GfxLabColorSpace!
2. Since You commited the usage of getRGBLine() today early morning, and the
output intent is here a CMYK profile, we need to support this in lineTransform
and getRGBLine(), too.
With other words, the patch becomes bigger and bigger, and we probably can
commit this only to master.

But I'm still not completely satisfied with my current solution, so please stop
any further investigation and wait until I upload a new patch which solves the
altona issues completely.

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