RFR: JDK-8323695 RenderPerf (2D) enhancements (23.12) [v3]

[Laurent Bourgès]

> - new executor modes (buffer & volatile)
> - support parallel rendering on several frames and / or screens
> - added robot calibration + optionally use rounded duration to min frame latency (120Hz)
> - give more statistics in verbose (-v)
> - added new command-line arguments
> - added version + help information

Laurent Bourgès has updated the pull request incrementally with one additional commit since the last revision:

  JDK-8323695: updated help to describe new command-line arguments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/17408/files
  - new: https://git.openjdk.org/jdk/pull/17408/files/8a016e81..84aabd1b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17408&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17408&range=01-02

  Stats: 52 lines in 1 file changed: 16 ins; 4 del; 32 mod
  Patch: https://git.openjdk.org/jdk/pull/17408.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17408/head:pull/17408

PR: https://git.openjdk.org/jdk/pull/17408