Is it not expected that the Sprite in the attached composition would "disappear", when the Constant Color patch is set to pure Alpha blackYeah, that's always been a real pain. I think it is the actual CIFilter that causes the problem (i.e. I have had similar issues using the CIFilter directly independent of QC).
I did some testing -- Constant Color produces no output image when the input is 0,0,0,0. so the cropper produces nothing, and hands off nothing to the sprite, who then operates as if no image is attached at all -> default white sprite.
So Andrew's correct, it's the Constant Color / CIFilter that's broken, not the sprite. (bug still stands though, just clarifying where it lives)
Andrew, do you have a sample app that demonstrates the bug outside of QC? if so, that's a CoreImage bug.
-- [ christopher wright ] [email protected] http://kineme.net/
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