RFR: 8322619: Parts of SG no longer update during rendering - overlapping - culling - dirty [v3]

[eduardsdv]

On Wed, 3 Jul 2024 15:05:50 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> tests/system/src/test/java/test/com/sun/prism/impl/NGNodeDirtyFlagTest.java line 68:
>> 
>>> 66:             root = new StackPane();
>>> 67:             primaryStage.setScene(new Scene(root, 500, 400));
>>> 68: 
>> 
>> Please add `primaryStage.setAlwaysOnTop(true);` call here, without it the test can fail fail intermittently if the test window gets behind any other window.
>
> Also, we generally recommend an undecorated stage for any tests that do a screen capture.

The test now extends the ``VisualTestBase`` and therefore the stage is now alwaysOnTop and undecorated.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1451#discussion_r1664467625