Hi All, I hope this is a known problem but just in case it's not.
Trying to make an app drawing something on JPanel I noticed some annoying inaccuracies. The attached piece of code is supposed to draw a series of lines one below the other (swapping colors are to demonstrate what's happening). The result is presented in the following picture: [cid:image003.jpg@01D4985D.2FD2C670] That means that some pixels are unreachable. I tested it on several jdk releases. Results are: OpenJDK Runtime Environment (build 1.8.0_40-b25): Works correctly OpenJDK Runtime Environment (build 9+181): Wrong behavior OpenJDK Runtime Environment 18.3 (build 10.0.2+13): Wrong behavior OpenJDK Runtime Environment 18.9 (build 11.0.1+13): Wrong behavior The same inaccuracies are observable when using drawRect() or fillRect(). I wanted to report is a bug but I do not know how to do it. Thank you for looking at it. Best regards Michał Błaszak Section Manager, Research & Development
test.java
Description: test.java
