This test would fail with Xrender. But it did odd things like sleep in the paint method. When I fixed that it started to pass every time. It also had a problem listing for macOS supposedly for edge pixels. I didn't see that myself but I changed it to not sample the edges.
------------- Commit messages: - 8221451 Changes: https://git.openjdk.org/jdk/pull/27400/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27400&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8221451 Stats: 100 lines in 3 files changed: 36 ins; 53 del; 11 mod Patch: https://git.openjdk.org/jdk/pull/27400.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27400/head:pull/27400 PR: https://git.openjdk.org/jdk/pull/27400
