> If you've created a bitmap context, then you should already own the backing > bitmap data buffer. You can just manipulate it directly without making a > copy (via a CGImage).
How could I access its buffer? Cheers, chr On Wed, Oct 8, 2008 at 5:21 PM, Ken Thomases <[EMAIL PROTECTED]> wrote: > On Oct 8, 2008, at 11:02 AM, Christian Giordano wrote: > >> After drawing the shapes, I do pixel operations, of course. > > Are these pixel operations not something which can be accomplished by > changing the way you draw, for example using compositing modes? > Alternatively, do you have access to Core Image and does it do what you > need? Another thing to look at might be vImage. > >> For this >> reason I create a bitmap context and after the drawing I get the >> CGImageRef generated, I copy the pixels, I modify the pixels and then >> I create a new image > > > Cheers, > Ken > > _______________________________________________ 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]
