[okular] [Bug 423360] Viewport blinks (flashes, disappears) while scrolling or dragging at moderate or high zoom levels

[David Hurka]

https://bugs.kde.org/show_bug.cgi?id=423360

David Hurka <david.hurka at mailbox.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |oliver.sander at tu-dresden.de

--- Comment #4 from David Hurka <david.hurka at mailbox.org> ---
I took some time and made a git bisect for this bug. The result is surprising,
because it gives commits from 18.04 already, which means that the problem was
not discovered by us for a long time. I think the problem requires a modern
Poppler version to appear. Maybe we all used Poppler <0.63?

@Oliver: You wrote
https://invent.kde.org/graphics/okular/-/merge_requests/134#note_110955 . Do
you remember whether you recently updated across Poppler 0.63?

This appears to be the first commit which has the problem in unrotated view:

> commit 2d8b2c7e95927db1633ecb871ed4100c3e7e3833
> Author: Albert Astals Cid <albert.astals.cid at kdab.com>
> Date:   Thu Feb 1 19:42:37 2018 +0100
> 
>     Add support for cancellable image rendering and text extraction
>     
>     Summary:
>     Only supported by the pdf backend if using poppler >= 0.63
> [...]
>     Differential Revision: https://phabricator.kde.org/D9328

For rotated view, the problem existed longer. v16.12.0 is the first which I can
compile, and it has this problem.

-- 
You are receiving this mail because:
You are the assignee for the bug.