<AWT Dev> [jdk17] RFR: 8266079: Lanai: AlphaComposite shows differences on Metal compared to OpenGL [v3]

[Alexey Ushakov]

> Implemented blit via compute kernel

Alexey Ushakov has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  8266079: Lanai: AlphaComposite shows differences on Metal compared to OpenGL
  
  Keep MTLLayer opacity in sync with window content view

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Changes:
  - all: https://git.openjdk.java.net/jdk17/pull/62/files
  - new: https://git.openjdk.java.net/jdk17/pull/62/files/3eef431e..361407b1

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk17&pr=62&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk17&pr=62&range=01-02

  Stats: 34 lines in 6 files changed: 28 ins; 5 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk17/pull/62.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/62/head:pull/62

PR: https://git.openjdk.java.net/jdk17/pull/62