[Webkit-unassigned] [Bug 149060] [ThreadedCompositor] Scrolling artifacts on accelerated subframes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=149060

Carlos Garcia Campos <cgarcia at igalia.com> changed:

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--- Comment #14 from Carlos Garcia Campos <cgarcia at igalia.com> ---
Comment on attachment 288948
  --> https://bugs.webkit.org/attachment.cgi?id=288948
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=288948&action=review

> w/Source/WebKit2/WebProcess/WebPage/CoordinatedGraphics/ThreadedCoordinatedLayerTreeHost.cpp:82
> -    m_viewportController.didScroll(rect.location());
>      didChangeViewport();

This is not correct, it breaks fixed layout scrolling. Also, if we don't call didScroll, we shouldn't need to call didChangeViewport() either.

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