How to render a CALayer with a different blending mode, like screen or multiply?

Question

I have a UIImageView and want it to be displayed with a specific blend mode. I know the iPhone has different blend modes, and it's probably possible to do it with a lot of CG code...but maybe there's a nice way with the CALayer of UIImageView?

Answer 1

see here: http://stackoverflow.com/questions/1658751/composite-colors-calayer-and-blend-mode-on-iphone/3241164#3241164