RFR: 8326027: Comparing buffered images of white background frame fails in Mac

[Tejesh R]

On Thu, 29 Aug 2024 23:14:29 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

> Have you checked what is the root cause? Are the pixels drawn incorrectly in the frame, or is the robot distorting the colors when it grabs the pixels?

The issue occurs intermittently/might be even host specific. It occurs when Robot.createMultiResolutionScreenCapture is used to capture HiDPI image and comparing them. I believe it's related to Robot capture, rather than pixel drawn incorrectly since we haven't observed such case in headless test which actually compares colors using Graphics paint to buffered image.

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

PR Comment: https://git.openjdk.org/jdk/pull/20760#issuecomment-2320054912