I started questioning myself if maybe I need something else, but clearly I have no idea which other options I have. Maybe using OpenGL (ES)? The ultimate aim is of course to renderer the result of all the manipulation, at the moment this happens in a UIView.drawRect.
Cheers, chr On Wed, Oct 8, 2008 at 4:25 PM, Jean-Daniel Dupas <[EMAIL PROTECTED]> wrote: > CGImage does not provide an efficient way to update , but maybe CGImage is > not what you want. > Where your image come from, why do you need a CGImageRef and what are you > trying to do with it ? > > > Le 8 oct. 08 à 17:01, Christian Giordano a écrit : > >> I'm modifying frequently the pixels of the images, the way I found is >> creating a copy of the data >> (CGDataProviderCopyData(CGImageGetDataProvider(image));) modify the >> pixels and then create a new one. I'm facing performance issues and I >> fear that all this allocating and deallocating is not helping. Is >> there a way I could have access and modify the pixels of a CGImage >> without copying them? >> >> Thanks, chr >> _______________________________________________ >> >> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >> >> Please do not post admin requests or moderator comments to the list. >> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >> >> Help/Unsubscribe/Update your Subscription: >> http://lists.apple.com/mailman/options/cocoa-dev/devlists%40shadowlab.org >> >> This email sent to [EMAIL PROTECTED] >> > > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
