https://bugs.kde.org/show_bug.cgi?id=409644

David Hurka <david.hu...@mailbox.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|unspecified                 |21.04.3
          Component|PDF backend                 |general

--- Comment #5 from David Hurka <david.hu...@mailbox.org> ---
Thanks.

The most relevant source is probably part/pageview.cpp and
part/pagepainter.cpp. PageView::paint() might (indirectly) tell Wayland wrong
stuff so it does more than necessary. PagePainter paints the document (this is
usually the only painting done in PageView::paint()), and has a fast and a slow
code path. Maybe the fast path doesn’t work on your system.

The repository is at https://invent.kde.org/graphics/okular.

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