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23acb623c8
This change has two parts which depend on each other: 1. An early exit in the layout process, which allows for skipping display list construction entirely when nothing would change. 2. A simplification and unification of the way that "fake" animation frames are triggered. Now this happens on an entire ScriptThread at once and is based on whether or not any Pipeline triggered a display list update. Animations are never canceled in the compositor when the Pipeline isn't updating, instead the fake animation frame is triggered far enough in the future that an unexpected compositor tick will cancel it. This could happen, for instance, if some other Pipeline in some other ScriptThread produced a new display list for a tick. This makes everything simpler about these ticks. The goal is that in a future change the ScriptThread-based animation ticks will be made more generic so that they can throttle the number of "update the rendering" calls triggered by script. This should make Servo do a lot less work when moving the cursor over a page. Before it would constantly produce new display lists. Fixes: #17029. Testing: This should not cause any web observable changes. The fact that all WPT tests keep passing is the test for this change. Signed-off-by: Martin Robinson <mrobinson@igalia.com> Co-authored-by: Oriol Brufau <obrufau@igalia.com> |
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| Cargo.toml | ||
| lib.rs | ||
| wrapper_traits.rs | ||