Hi everyone, APZ autoscrolling (bug 1390247) is now enabled by default on the Nightly channel.
For those not familiar with autoscrolling, it's a scrolling mechanism activated by middle-clicking the mouse, which causes an "anchor" to appear on the screen, and moving the mouse away from the anchor. (It's enabled by default on Windows, and can be enabled on Mac and Linux by checking "Enable autoscrolling" in about:preferences). Until now, autoscrolling was driven by the content process main thread, which meant it was susceptible to jank on pages that are slow to paint or run heavy script. APZ autoscrolling fixes that by driving it from the compositor, allowing it to be smoother. (At the same time, like other async scrolling methods, APZ autoscrolling can trigger checkerboarding if you scroll sufficiently fast on a sufficiently long page.) If you notice any regressions related to autoscrolling on the Nightly channel, please file bugs blocking bug 1390247. Thanks! Botond _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
