[Okular-devel] [Bug 209630] New: White page rendered when zooming

[Benoît Jacob]

https://bugs.kde.org/show_bug.cgi?id=209630

           Summary: White page rendered when zooming
           Product: okular
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: okular-devel at kde.org
        ReportedBy: jacob.benoit.1 at gmail.com


Version:            (using Devel)
OS:                Linux
Installed from:    Compiled sources

At high zoom levels, when adjusting the zoom level, Okular first draws a
white page, "erasing" the previously rendered page, before rendering the actual
result. This seems useless, and distracting.

This is very strange:
I'm at 200% zoom level.
I zoom up   to 250%. Good: no white page rendered.
I zoom up   to 300%. Good: no white page rendered.
I zoom up   to 350%. BAD:  WHITE PAGE RENDERED
I zoom down to 300%. BAD:  WHITE PAGE RENDERED
I zoom down to 250%. BAD:  WHITE PAGE RENDERED
I zoom down to 200%. Good: no white page rendered.

Just a wild guess, does this per chance happen whenever Okular has to
re-allocate a buffer?

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