color channels getting swapped with asset catalogs and vImageBuffer_InitWithCGImage

Originator:kenferry
Number:rdar://15964857 Date Originated:2/1/2014
Status:Duplicate of closed bug, rdar://problem/14834615. Resolved:Yes
Product: Product Version:
Classification: Reproducible:YES
 
Summary:
I'm seeing incorrect drawing (swapped channels) with
(1) Images from asset catalog .car files
(2) That are read (only read from, not modified!) with vImageBuffer_InitWithCGImage before they are drawn.

Or vice versa. Drawn first, then read with vImage also gets incorrect data, with swapped color channels.

See test app at https://www.dropbox.com/s/9xun5bu1psrz10c/AssetCatalogWoes.zip

It looks to me like there's a cache invalidation problem in a CoreUI asset catalog image provide. Once the cache gets created for use with vImage, it gets incorrectly used for drawing or vice versa.

Comments


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