[jdk17u-dev] RFR: 8313697: [XWayland][Screencast] consequent getPixelColor calls are slow

[Matthias Baesken]

8313697: [XWayland][Screencast] consequent getPixelColor calls are slow

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Commit messages:
 - Backport 2f04bc5f934887029d8bcc13cf722d8498a35120

Changes: https://git.openjdk.org/jdk17u-dev/pull/2717/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2717&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8313697
  Stats: 171 lines in 7 files changed: 121 ins; 23 del; 27 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2717.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2717/head:pull/2717

PR: https://git.openjdk.org/jdk17u-dev/pull/2717