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: Markus Spoettl <email@hidden>
- Date: Wed, 17 Sep 2014 14:19:24 +0200
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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