cocoa touch - MKAnnotationView not drawing transparent PNGs properly -


i having trouble getting custom mkannotationview render proper alpha blending on edges. can see following screenshot, red , green dots have ugly black edge not blend background, system-supplied user location (the blue dot, barely visible) not.

enter image description here

the image transparent png , have confirmed it's not image's fault renders elsewhere.

i have set opaque = no on mkannotationview had no effect.

am missing something?

ha, went away on own. i'm not sure did wasn't worrying it, changing other stuff around , of sudden renders now.

*shrug*


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