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@howlingblast
Created July 10, 2013 13:25
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iOS: device pixel ratio / retina
if ([[UIScreen mainScreen] respondsToSelector:@selector(displayLinkWithTarget:selector:)] && [[UIScreen mainScreen] scale] == 2.0) {
_devicePixelRatio = 2.0; // retina display
}
else {
_devicePixelRatio = 1.0; // non-retina display
}
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