[OpenJDK 2D-Dev] RFR: 8266079: Lanai: AlphaComposite shows differences on Metal compared to OpenGL [v3]

[Sergey Bylokhov]

On Thu, 12 Aug 2021 18:58:59 GMT, Alexey Ushakov <avu at openjdk.org> wrote:

>> Interesting, now I'm also able to reproduce this problem with the latest version of the fix. Actually, looks like the problem exists even without the fix. We get invalid background with the same scenario. It's not so visible because of default L&F (light). Nevertheless, the color of the background is not exact the same. If we provide apple.awt.application.appearance=NSAppearanceNameDarkAqua  VM option, the problem became visible with metal and not reproducible with OGL.
>
> I've filed a separate CR for this problem JDK-8272392

Then you can roll back this change to the default opaque layer?

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PR: https://git.openjdk.java.net/jdk/pull/4946