[OpenJDK 2D-Dev] RFR: 8264143 Lanai: RenderPerfTest.BgrSwBlitImage has artefacts on apple M1 [v3]

[Denis Konoplev]

> There was no code to check num of work items in compute shader.
> Also, I've replaced four similar shaders.

Denis Konoplev has updated the pull request incrementally with one additional commit since the last revision:

  8264143: Change uint8_t to unsigned char

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3368/files
  - new: https://git.openjdk.java.net/jdk/pull/3368/files/51eaa139..8cc9463d

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3368&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3368&range=01-02

  Stats: 3 lines in 1 file changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3368.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3368/head:pull/3368

PR: https://git.openjdk.java.net/jdk/pull/3368