[OpenJDK 2D-Dev] RFR: 8262751: RenderPipelineState assertion error in J2DDemo

[Alexey Ushakov]

Provide correct pipeline state for MTLPaint after reset

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Commit messages:
 - 8262751: RenderPipelineState assertion error in J2DDemo

Changes: https://git.openjdk.java.net/jdk/pull/5227/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5227&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8262751
  Stats: 61 lines in 2 files changed: 51 ins; 2 del; 8 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5227.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5227/head:pull/5227

PR: https://git.openjdk.java.net/jdk/pull/5227