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On 02/11/2009, at 5:44 PM, David Duncan wrote:
I am using LCD panels. I have also tried Plasma panels. The refresh rate is 60hz as that is all that is offered when connecting the displays. The displays are configured as a video wall with HDMI splitters. However I have also observed the problem when connecting one LCD panel to my MacBook Pro.
I shall go forth and investigate fill rate and memory bottlenecks - though some clues here would be good! Are these things curable? ;-)
On 02/11/2009, at 7:41 AM, vade wrote:
How much vram do you have on your system, and are you running your second display on a high resolution?I don't *think* vram is an issue. I've tried various cards and hardware with similar results. For example my MacBook Pro: NVIDIA GeForce 9400M, 256 MB.
My airport video wall consists of two virtual displays: one of 1280x720 and the other at 1920x1080.
Try it with mirroring on, and see if its still smooth,Interesting idea. I am unable to try that right now, but the previous configuration of my displays was to two LCD panels each mirroring the display. Performance was smooth. However I was using 10.5 and I wasn't using CA - I used NSOpenGLView.
or try reducing the resolution on the second display, to see if its a fill rate, or vram 'thrashing' issue. I dont know the details of the implementation, and these are shots in the dark, but may help deduce the causes.I appreciate the thoughts. There's that fill rate word again. :-)
OK. Good idea.
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|>Re: Core Animation OpenGL Layer performance jitters (From: David Duncan <email@hidden>)|
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