Re: Fast transition between two graphics
Re: Fast transition between two graphics
- Subject: Re: Fast transition between two graphics
- From: Rob Keniger <email@hidden>
- Date: Wed, 30 Sep 2009 11:03:57 +1000
On 30/09/2009, at 10:33 AM, Chilton Webb wrote:
I will take a shot at this. My concern is that I've seen CoreImage
transitions bog down initially, I guess in their loading phase or
something. I have an early model G5 that I use for testing the low
end of the Leopard range (and it still looks strange to say G5 and
Low End in the same sentence). On that machine, apps that use
CoreImage tend to have a visual stutter initially, and I'm not sure
if that's a CI thing or an app specific thing. Is there a 'push'
effect for CI though?
Hmm, actually I don't think there is. There is one if you want to use
the private CoreGraphics filters:
http://lipidity.com/apple/core-graphics-meet-core-image-demo-app
http://lipidity.com/apple/the-ultimate-core-graphics-resource
However, it's probably not a good idea for a shipping app.
CoreImage uses the GPU, so if the GPU is a bit feeble or you are using
really large images then it may have frame rate issues, however Core
Animation can have these issues too.
--
Rob Keniger
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