NSOpenGLLayer animation issue under VNC (original) (raw)

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/viewbug.do?bugid=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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