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List:       kde-bugs-dist
Subject:    [Bug 198468] New: Amarok's main window repaints/resizes slowly
From:       Clemens Eisserer <linuxhippy () gmail ! com>
Date:       2009-06-30 21:48:59
Message-ID: bug-198468-17878 () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=198468

           Summary: Amarok's main window repaints/resizes slowly
           Product: amarok
           Version: unspecified
          Platform: Fedora RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: general
        AssignedTo: amarok-bugs-dist@kde.org
        ReportedBy: linuxhippy@gmail.com


Version:            (using KDE 4.2.90)
OS:                Linux
Installed from:    Fedora RPMs

Amarok's main window as well as its panels repaint & resize quite slow.

Amarok uses Gradients for its table backgrounds, however currently no X11
driver is able to accelerate gradients in hardware.
This means every time Amarok draws a gradient, the drivers are forced to
fallback to softrware rendering which involves expensive copy operations
between system-memory and video-memory.

Furthermore it seems that all the svg re-rendering is done in a synchronous
way, so the UI waits until the svg content is ready and then re-paints, instead
of triggering re-rendering in background and paint the svg when its ready.

This means:
- Resizing main window is horrible slow
- Resizing panels is slow

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