cocoa - CALayer is not clear when drawing -


enter image description here

i use calayer make tab bar. sometimes, drawing not clear can see 'index.pgiu'. if see on retina display, more worse usual screen. (see difference between 'index.pgiu' , 'flow' label )

how can fix it? cannot find keyword google.

answer.

[[nsscreen mainscreen] backingscalefactor]


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