I am creating a drawing application that looks like here: https://www.raywenderlich.com/87899/make-simple-drawing-app-uikit-swift
but when I set the line drawing alpha <1, when 2 lines overlap, the overlapping parts become darker, how can I make sure that the overlapping part does not become darker?
Please check the image here - when the two drawing lines overlap, the color gets darker, how can I make it keep the same
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