<AWT Dev> NSOpenGLLayer animation issue under VNC
Mike Swingler
swingler at apple.com
Wed Feb 6 09:29:37 PST 2013
On Feb 1, 2013, at 7:37 AM, Alexander Scherbatiy <alexandr.scherbatiy at oracle.com> wrote:
>
> Hello Mike,
>
> There is the issue 8005668 security control panel got greyed out when access Mac machine remotely using VNC
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8005668
>
> After a little investigation we have found that an animation does not work for the NSOpenGLLayer if a user uses VNC connection
> and the MAC OS X does not have connected monitors.
>
> Here are steps to reproduce which use only Cocoa application:
> - Connect to an Mac OS X with VNC
> - Detach all monitors from the Mac OS X (I used a Mac mini)
> - Run the code below
> The animation does not work
>
> The output shows that the drawInCGLContext method has been invoked only once or twice:
> ------------------------------------------------------------------
> 2013-02-01 19:21:27.488 OpenGLLayerSample[1731:707] invalid drawable
> 2013-02-01 19:21:27.489 OpenGLLayerSample[1731:707] drawInCGLContext
> 2013-02-01 19:21:27.513 OpenGLLayerSample[1731:707] drawInCGLContext
> ------------------------------------------------------------------
>
> Connection a monitor to the Mac OS X makes the animation work.
>
> It seems that it can have a relation to the issue 8005668 so the first time there is nothing to draw and next time nothing is drawn on a Java app.
> Is it a known issue and could it have a workaround?
This does appear to be a bug in the OS - you should see some an animation when you are screen-shared into the machine. Please file a bug at <http://bugreporter.apple.com>, and let me know what the bug ID is so I can ensure that it gets to the correct team.
Thanks,
Mike Swingler
Apple Inc.
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