[Webkit-unassigned] [Bug 252413] WebKit is too conservative in its first paint threshold

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Feb 20 12:25:33 PST 2023


https://bugs.webkit.org/show_bug.cgi?id=252413

--- Comment #3 from Ben Nham <nham at apple.com> ---
It would be better for someone on the rendering team to chime in on this. But the visually non empty heuristic (FrameView::checkAndDispatchDidReachVisuallyNonEmptyState) is indeed there to try and prevent flashes of white when navigating between pages, and also to save resources on paints that will be quickly replaced by other paints. The thresholds are already pretty low so I'm not sure that we should be decreasing them even more for real webpages.

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