I'd like to apply a ColorMatrixFilter to one rectangular area of a DisplayObject, leaving the rest untouched. To solve this problem, I've seen suggestions of cropping a bitmap snapshot of the DisplayObject and overlaying it on the original, but that hack won't work for me.
You'd think this would be either a generally useful enhancement of filters, or else a small tweak to the behaviour of ColorMatrixFilter. Am I missing something obvious? Maurice
