RFR: 8276058: Some swing test fails on specific CI macos system [v2]

[Sergey Bylokhov]

On Fri, 29 Oct 2021 05:49:34 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

> We have same test failure in macos-aarch64 in JDK-8266245 and I guess tolerance level of 5 should not be an issue. I was told earlier tolerance level of upto 15 should be acceptable..

I do not like the tolerance approaches in general until we do not recognize the root cause of the wrong color. There were many cases in the past when the people said the issue was caused by the "broken driver"/"some non-default configuration"/ etc...etc. But in reality, the problem was caused by our code when we use the wrong color composite/ the wrong color profile/etc.

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PR: https://git.openjdk.java.net/jdk/pull/6140