Integrated: 8252880: Image operations are not working with metal

[Alexey Ushakov]

Passed isOpaque src property into image ops shaders

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Commit messages:
 - 8252880: Image operations are not working with metal

Changes: https://git.openjdk.java.net/lanai/pull/94/files
 Webrev: https://webrevs.openjdk.java.net/?repo=lanai&pr=94&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8252880
  Stats: 9 lines in 3 files changed: 2 ins; 0 del; 7 mod
  Patch: https://git.openjdk.java.net/lanai/pull/94.diff
  Fetch: git fetch https://git.openjdk.java.net/lanai pull/94/head:pull/94

PR: https://git.openjdk.java.net/lanai/pull/94