Document Revision History

This table describes the changes to vImage Alpha Compositing Reference.

2011-10-12Added to iOS Developer Library and updated for iOS 5.0.
2011-06-06Added additional constants for OS X v10.7.
2007-07-12New document that describes the programming interface for high-performance alpha compositing operations.

The content in this document was formerly part of Optimizing Image Processing With vImage.


Added vImageClipToAlpha_Planar8, vImageAlphaBlend_ARGBFFFF, vImageClipToAlpha_PlanarF, and vImageClipToAlpha_ARGBFFFF.