[Libreoffice-bugs] [Bug 104878] Impress works very slow with large sized GIF

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=104878

--- Comment #39 from Armin Le Grand <Armin.Le.Grand at me.com> ---
I tried on Win and Linux and both got significantly faster without skia. Indeed
the prob is aged, but me and caolan did a lot of opts in that area - so to get
the current state - an improvement over 2016 - at lest I had to switch away
from skia. Please note that in it‘s current state it does no bufferings (as
GDIplus and Cairo do), btw also not using transformations or direct line
dashing - but main reasons for bitmap based stuff to be slower again is
buffering of system-format bitmaps. Just my 2ct...
There is always room for improving the git stuff, of course, when you know
where we came from - it was just painted over timer-based without taking care
of Z-Order and overlapping objects at all...

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