On Wednesday, February 17, 2016 at 10:35:10 AM UTC-8, Benoit Girard wrote: > Currently APZ does not cause scrollbar initiated scrolling to be async. > I've been working in fixing this and I'd like some help testing it out > before enabling it on Nightly. If you're interested please flip > 'apz.drag.enabled' to true and restart. If you find any issue please make > it block https://bugzilla.mozilla.org/show_bug.cgi?id=1211610. > > I've got a test page here to confirm that it's turned on properly: > http://people.mozilla.org/~bgirard/scroll_no_paint.html > > Scrolling on this page is slow in FF because it hits a performance bugs in > layer construction code. However with APZ the scrolling is smooth and a bit > checkerboard-y instead. If you have 'layers.acceleration.draw-fps' set you > should notice the left most FPS counter at 60 FPS while the middle counter > will be much lower. This is APZ handling the scroll. > > Happy Testing, > Benoit
I've been seeing some rather weird middle-click scrolling behavior in recent nightlies, and your test page seems to be a good way to reproduce it (see https://gfycat.com/FarflungCoarseBoutu for a video). Is this a known issue, or should I file it? _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
