Re: Heavy flickering on Retina Macs with Yosemite & NSVisualEffectView & overlay windows
Re: Heavy flickering on Retina Macs with Yosemite & NSVisualEffectView & overlay windows
- Subject: Re: Heavy flickering on Retina Macs with Yosemite & NSVisualEffectView & overlay windows
- From: Kyle Sluder <email@hidden>
- Date: Wed, 17 Sep 2014 08:32:57 -0700
Your video won’t play on my phone. But honestly, if you’re not doing anything particularly advanced (as in the OpenGL or CGDirectDisplay level), then the symptoms you describe should not appear and you ought to file a bug.
You might consider simply attaching your current project (along with screenshots and/or a version of your movie you know to work) before bothering to make a demo app. Be sure to include your system configuration—this is one case where it really matters, and you don’t want to burn time waiting for a bug screener’s “please attach a system configuration” reply.
--Kyle Sluder
> On Sep 17, 2014, at 5:19 AM, Markus Spoettl <email@hidden> wrote:
>
> Hello,
>
>> On 16/09/14 16:28, Markus Spoettl wrote:
>> using Yosemite DP8 (first tested and observed with DP7), we get very heavy
>> flickering when animating a popup overlay window over a window whose content
>> consists of views sitting on NSVisualEffectViews
>> (NSVisualEffectBlendingModeWithinWindow) and with a transparent window title bar
>> and toolbar.
>>
>> What happens is that the area behind the popup window that is being animated
>> into view (animating window frame and alpha) briefly blacks out with a opaque
>> completely black fill. Sometimes it resembles the shape of the popup window,
>> sometimes it doesn't, sometimes areas not covered by the popup window flicker.
>
> I made a short demo video illustrating the problem:
>
> http://www.shiftoption.com/images/flickering.mov
>
> Anyone any idea what might cause this? Maybe a overwhelmed graphics unit? A driver bug? It also sometimes happens when the window becomes active or inactive, for example when tabbing through apps. Then larger areas of the window briefly get blacked out. It only happens on the Retina MacBook (Mid 2012), I don't have any other retina display hardware here to try other machines.
>
> Any pointers would be highly appreciated!
>
> Thanks
> Markus
> --
> __________________________________________
> Markus Spoettl
> _______________________________________________
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