I've never seen and don't see it slowing down other applications (I'm on a MacBook Pro 13'') but I reported the DropShadow slow down and documented the solution [1].
Tom [1] https://openjfx-dev.openjdk.java.narkive.com/I8NIK0db/bad-dropshadow-performance On 04.11.18 20:22, Nir Lisker wrote: >> >> I don't have access to the OpenJDK bug tracker so I can't file a bug >> report for this >> > > You can do it at https://bugreport.java.com/bugreport/ > > On Sun, Nov 4, 2018 at 9:18 PM Mike Hearn <m...@plan99.net> wrote: > >> I'm on macOS High Sierra with a very new and very high end MacBook Pro. >> >> I have a pretty basic GUI that uses translucency fairly aggressively. I >> added a DropShadow effect to some nodes, which looks great, but to my great >> surprise this one line of code kills the UI performance not of my app, but >> other apps on the same machine, specifically: >> >> - I can see the frame rate of the dock's zoom animation is lower >> - Chrome becomes nearly unusable. Opening a new tab goes from nearly >> instant to sluggish, this is very noticeable if you watch the tab in the >> tab strip itself expand. It goes from smooth and fast to being able to >> see >> the individual frames. >> >> Stopping my app immediately restores the other apps to full framerate. So >> presumably, the DropShadow shader is triggering some slow path not only in >> JavaFX but the GPU or driver itself. I've experimenting with caching and >> that speeds up scrolling of nodes with drop shadows in my own app, but the >> OS-wide slowdown remains. >> >> Has anyone seen anything like this before? I'm suspecting that I'll need to >> render my own drop shadow effect using static bitmaps to work around it. >> >> I don't have access to the OpenJDK bug tracker so I can't file a bug report >> for this and I'm not sure how to reproduce it reliably. It's the first time >> I noticed it. >> -- Tom Schindl, CTO BestSolution.at EDV Systemhaus GmbH Eduard-Bodem-Gasse 5-7. A-6020 Innsbruck Reg. Nr. FN 222302s am Firmenbuchgericht Innsbruck
