On 27 Sep 2009, at 07:50, Graham Cox wrote:
One possibility is to use OpenGL. It has a "history buffer" mode (may not be called that - I forget exactly) that stores the previous image at a diminished brightness and that can be stacked for a series of frames, giving a fade or trail effect.
I think you're referring to the accumulation buffer, which can be used for this kind of thing.
That's probably the best way to implement this, to be honest. Failing that, you could use Core Image (assuming that's an option for you).
Kind regards, Alastair. -- http://alastairs-place.net _______________________________________________ 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 arch...@mail-archive.com
