This PR provides at least some basic information when a pipeline can't be used. There are a number of reasons why a candidate pipeline can't be used, and this PR makes it clear at which point the pipeline fails.
The changes are only applied in case `prism.verbose` is already set to `true`, so there is no unwanted logging. ------------- Commit messages: - In case prism.verbose=true, this patch provide some basic information Changes: https://git.openjdk.java.net/jfx/pull/693/files Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=693&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8278595 Stats: 14 lines in 2 files changed: 12 ins; 2 del; 0 mod Patch: https://git.openjdk.java.net/jfx/pull/693.diff Fetch: git fetch https://git.openjdk.java.net/jfx pull/693/head:pull/693 PR: https://git.openjdk.java.net/jfx/pull/693
