I stand corrected as I have learned a lot more about this. They are premultiplied. Even though I got my feature working using libTiff, I like Jens idea of just walking thru the alpha data and manually setting the values. This would save having yet another lib linked in and seems to be a cleaner path.
Todd On Jan 27, 2012, at 9:28 AM, Fritz Anderson wrote: > Are the pixels "not there," or are they premultiplied? > > <http://en.wikipedia.org/wiki/Alpha_compositing> > > — F > > On 26 Jan 2012, at 8:21 PM, Todd Freese wrote: > >> The issue is that it only loads the pixels that are allowed by the alpha. >> Almost no graphic program does this. It should load "all" the pixels and >> give you the option of using the alpha if needed. Another words, there is no >> way to just get the full image. > > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud service. > For more information please visit http://www.symanteccloud.com > ______________________________________________________________________ > ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
