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List:       kwin
Subject:    [Bug 160948] New: Shadows faster than windows !
From:       aldo-public () laposte ! net
Date:       2008-04-17 17:38:13
Message-ID: 20080417193812.160948.aldo-public () laposte ! net
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http://bugs.kde.org/show_bug.cgi?id=160948         
           Summary: Shadows faster than windows !
           Product: kwin
           Version: unspecified
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kwin kde org
        ReportedBy: aldo-public laposte net


Version:            (using KDE 4.0.3)
Installed from:    Ubuntu Packages

Not a big problem, but it makes the desktop look "unfinished".
Steps for reproducing: take a computer with a not so fast GPU (like Intel 945GM), and \
open a new Window. Then if you really look, and if you haven't enabled any particular \
effect in kwin, you will see that the shadow of the new window appears some time \
before the window itself. The other way around, when you close a window, the shadow \
disappears a fraction of second after the window. Try with the K-menu, or with \
krunner for instance, as kwin does not apply effects to their windows.

In my opinion, waiting for a quarter of second for the krunner window to appear is \
not an issue, but for its shadow not to be synchronized looks unpolished. Wouldn't it \
be possible to synchronize it ? (make it wait for the window)

Technically, are the window and its shadow rendered into the same opengl picture ? If \
so, then wouldn't it be possible to show the texture only when the window is ready ? \
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