[Okular-devel] [okular] [Bug 320486] New: display defects in some zoom levels

[Marco T.]

https://bugs.kde.org/show_bug.cgi?id=320486

            Bug ID: 320486
           Summary: display defects in some zoom levels
    Classification: Unclassified
           Product: okular
           Version: 0.16.2
          Platform: Ubuntu Packages
               URL: http://tinypic.com/view.php?pic=15kile&s=5
                OS: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: nazgul17 at gmail.com

If I compile LaTeX formulas in a pdf such as

\begin{equation}
\operatorname{util} = \overbrace{\alpha A + \beta B}^{\mbox{gains}}
\overbrace{- \gamma C - \delta D}^{\mbox{costs}} \overbrace{- \epsilon E - \eta
F}^{\mbox{penalties}}
\end{equation} 


\begin{equation}
d = \sqrt{\frac{123}{abc}} \cdot l
\end{equation}


there are imperfections visible or invisible, depending on the level of zoom.
If I open the same file with Adobe Reader this does not happen.


In the image I attached, you can see at the attachment of the "pieces" of the
horizontal curly brackets there are imperfections, and the same holds for the
square root symbol.

I know this is a minor problem, but just to let you aware of it...

Reproducible: Always

Steps to Reproduce:
1. compile the pdf file with pdflatex
2. open it
3. zoom in and out to see the imperfections appear and disappear
Actual Results:  
imperfections due to zooming interpolation (I guess) appear

Expected Results:  
Perfect symbols

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