RFR: 8303904: [macos]Transparent Windows Paint Wrong (Opaque, Pixelated) w/o Volatile Buffering [v2]

[Jeremy Wood]

On Thu, 23 Oct 2025 15:06:18 GMT, Anass Baya <abaya at openjdk.org> wrote:

>> What is the fate of auto-closed PRs?
>> 
>> That is: as long as I don't delete this branch in my repo will this be available for future reference if anyone dusts off this ticket in the future?
>
> Hey @mickleness,
> the fix is causing a regression.
> the test javax/swing/JTable/8236907/LastVisibleRow.java is failing with the fix
> I'm investigation that
> BR,

@anass-baya can you elaborate on what failure you're seeing?

I merged master into this branch and ran these tests on my Mac without any failures:

jeremy at mac jdk % /Users/jeremy/IdeaProjects/jtreg/build/images/jtreg/bin/jtreg -jdk:/Users/jeremy/IdeaProjects/jdk/build/macosx-aarch64-server-release/jdk /Users/jeremy/IdeaProjects/jdk/test/jdk/javax/swing/RepaintManager/8303904
Directory "JTwork" not found: creating
Test results: passed: 2
Report written to /Users/jeremy/IdeaProjects/jdk/JTreport/html/report.html
Results written to /Users/jeremy/IdeaProjects/jdk/JTwork
jeremy at mac jdk % /Users/jeremy/IdeaProjects/jtreg/build/images/jtreg/bin/jtreg -jdk:/Users/jeremy/IdeaProjects/jdk/build/macosx-aarch64-server-release/jdk /Users/jeremy/IdeaProjects/jdk/test/jdk/javax/swing/JTable/8236907/       
Test results: passed: 1
Report written to /Users/jeremy/IdeaProjects/jdk/JTreport/html/report.html
Results written to /Users/jeremy/IdeaProjects/jdk/JTwork


[JTwork.zip](https://github.com/user-attachments/files/23763851/JTwork.zip)

If I can reproduce the failure(s) I can try resolving them.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/13196#issuecomment-3579663410