[Libreoffice-bugs] [Bug 135910] Transparent objects either possess outlines when none are defined or are completely opaque, depending on export PNG options

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=135910

--- Comment #13 from Mike Kaganski <mikekaganski at hotmail.com> ---
(In reply to Tomaz Vajngerl from comment #12)

Sure! But does this mean that we must re-implement the whole graphic stack to
work with pre-multiplied bitmaps? E.g., when I create a transparent buffer, and
use it as current vdev in a process() call, which would mean unknown number of
nested calls, and ultimately primitives drawing polylines or (possibly RGBA)
bitmaps on vdevs, so they all need to take care to work with pre-multiplied
colors IIUC. Or do I overcomplicate because of poor understanding the topic?

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