ActionScript 3.0 :: Optimizing Multiply Layers With Blendmodes In Flex / Flash?
Nov 23, 2009
I'm working on some photo manipulation stuff and have multiple images loading and displaying ontop of each other, each with various blendmodes set e.g. overlay, multiply etc.
The problem is it is sooooo slow! I thought I might be able to optimise it by drawing the resultant image to a new bitmap using BitmapData.draw (so sort of pre-baking the effects). The problem is (as I understand it) blendmodes are not draw when not on screen, so I can't use this approach until I've added the images to the screen at which point it has already slooowed down.
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Code:
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