We've been banging our heads in here for a while on problem with aft files in iOS. We have here a nice alpha fade around buttons and other UI elements, just as our designers have drawn, and it looks great in ATF format in Android but looks miserably if we convert them to iOS format.
We've already tried everything we could think of but it still looks miserable. We tried to set png2atf property -q to "0" or event "pvrtcbest" and nothing. We tried to set "premultiply alpha" property in texturePacker and no luck. Then we checked if "Reduce border artifacts", as some forums posts suggested, would be of any help, and still failed. We also tried to compile atfs in two steps first use PVRTexTool and only then pvr2atf and, well guess what - output looks like far from what we would expect.
Could someone please tell me what is a default solution to this problem, if there is any?
From looking to other AIR mobile games it seems that other companies tend to avoid usage of alpha channel to solve this. Some suggest to apply PS noise filter to sprite sheets, which also seem to create more problems than it could solve.
Thanks in advance!