The original write-up contains two complaints: 1. The window is opaque, so pixels that should be transparent are black. 2. The window is the wrong resolution. On a 200% resolution monitor it renders as if it were 100% (so it looks pixelated).
I recommend splitting this up into separate tickets. This PR addresses the first (probably most offensive) issue: the window is now transparent. I experimented with a change that resolves the second issue (image resolution) here: https://github.com/openjdk/jdk/commit/90735b7c01c66268776998c1b6aedc3250427002 ... that works, but IMO that looks riskier and should be part of a separate discussion. I only have a Mac configured right now to test against, so I've confirmed the MTLGraphicsConfig and CGLGraphicsConfig changes. The other GraphicsConfig changes are identical, but I haven't confirmed that this new test passes in those environments. (I did confirm that those GraphicsConfig files appear to support getColorModel(Transparency.TRANSLUCENT), so I'm optimistic they'll be OK. ------------- Commit messages: - 8303904: fixing compiler `cannot find symbol` errors - 8303904: cleaning up comment - 8303904: apply same solution to other GraphicsConfigurations - 8303904: resolve failing bug8308904_OGL test on Mac - 8303904: adding failing unit test for OpenGL on Mac - 8303904: updating instruction text to reflect narrowed focus of this branch - 8303904: rolling back prev createAcceleratedImage commit - 8303904: change createAcceleratedImage to return a potentially high-res image - 8303904: use Transparency.TRANSLUCENT for non-opaque windows - 8303904: Add failing unit test - ... and 4 more: https://git.openjdk.org/jdk/compare/98a7a60f...4284d4cd Changes: https://git.openjdk.org/jdk/pull/13196/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13196&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8303904 Stats: 225 lines in 7 files changed: 220 ins; 0 del; 5 mod Patch: https://git.openjdk.org/jdk/pull/13196.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/13196/head:pull/13196 PR: https://git.openjdk.org/jdk/pull/13196
