Bug 228120
| Summary: | Layer tree unfreezing and rendering update scheduling need to work together | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Simon Fraser (smfr) <simon.fraser> |
| Component: | Layout and Rendering | Assignee: | Nobody <webkit-unassigned> |
| Status: | NEW | ||
| Severity: | Normal | CC: | bfulgham, sam, simon.fraser, webkit-bug-importer, zalan |
| Priority: | P2 | Keywords: | InRadar |
| Version: | Safari Technology Preview | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| See Also: | https://bugs.webkit.org/show_bug.cgi?id=228121 | ||
Simon Fraser (smfr)
We currently rely on timers to trigger style updates/render tree updates, and this is necessary to trigger unfreezing the layer tree (via visually empty threshold). Ideally the style system would not have any of its own timers; it would just schedule rendering updates. However, TiledCoreAnimationDrawingArea::triggerRenderingUpdate() just bails if the layer tree is frozen.
We need to somehow harmonize layer tree freezing with rendering updates.
| Attachments | ||
|---|---|---|
| Add attachment proposed patch, testcase, etc. |
Simon Fraser (smfr)
See rdar://75362363 and http://trac.webkit.org/changeset/272300/webkit
Sam Weinig
(In reply to Simon Fraser (smfr) from comment #1)
> See rdar://75362363 and http://trac.webkit.org/changeset/272300/webkit
... and https://trac.webkit.org/changeset/280112/webkit
Radar WebKit Bug Importer
<rdar://problem/81176458>