[okular] [Bug 412616] GUI hangs with big pdf

[Tobias Deiminger]

https://bugs.kde.org/show_bug.cgi?id=412616

Tobias Deiminger <haxtibal at posteo.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aacid at kde.org

--- Comment #3 from Tobias Deiminger <haxtibal at posteo.de> ---
For whatever reason the document contains 166152 radial shading fills, each
using a 3-samples, linear-interpolating color function. Poppler spends ~80% of
overall processing time there. IOW, the document requests heavy processing and
gets it. 

Try the document in other readers, e.g. PDF.js/Firefox, performance is same or
worse than with Okular/poppler. Only Adobe renders the document considerably
faster, seemingly they have some optimization.

Albert, CCed you because I think you're familiar with the shading stuff in
poppler, how would you suggest to continue here?

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