If a filter cannot run on the give GPU, CoreImage will resort to  
rendering in software. There is now way for you to determine, if a  
filter cannot be run on a GPU beside the general distinction of  
CoreImage capable graphics hardware (fragment programmable).

Frank

On Dec 12, 2005, at 3:15 PM, Kevin Ballard wrote:

> I'm trying to programmatically determine whether a given CIFilter  
> is usable on the current graphics hardware, but I can't find any  
> definitive answer on how to do this. In Quartz Composer I can check  
> for given OpenGL extensions and hardware acceleration, which I  
> imagine is how I'm supposed to do this, except I'm not using Quartz  
> Composer and I don't know what combination of extensions/
> acceleration is necessary for my filter. Is there any good way to  
> figure this out, or am I going to have to try and find computers  
> with different graphics cards to test with? And even if I do the  
> testing, how am I supposed to detect the extensions/acceleration  
> availability?
>
> Thank you,
> Kevin Ballard
>
> --
> Kevin Ballard
> Yahoo! Mac Engineer
> ballard@yaho...
> Phone: (408) 349-6693
> Cell: (408) 660-5028
> Yahoo! ID: k_r_ballard
>
>
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