[Libreoffice-bugs] [Bug 144214] enabling skia on macOS results in 75% of window painted in red on macOS

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=144214

--- Comment #18 from Thorsten Wagner <thorsten.wagner.4 at gmail.com> ---
Confirming that patch attached causes rendering in double size on retina
displays as desired (no red areas as without patch).

I did not investigate the code, but patch seems to be an upscaling to the
desired size causing blurry text again. Bitmaps are blurry too due to upscaling
(see LO logo for example).

For me the advantage of using Skia on macOS is not really obvious. I do not
face any performance issues with graphics using LO on macOS. To use Metal
graphics implementation of CALayers (not CGLayers as used by current
implementation) would be a way to continue using Apple's display technologies
(such as retina text). Otherwise sharp rendering of text and bitmaps has to be
implemented at least.

For a production release I recommend removing Skia options and buttons like
"Run Graphics Tests" unless implementation is fully functional on macOS (no
issue on master branch as long it is not included in a production release by
mistake).

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