[Webkit-unassigned] [Bug 178749] When navigating back to a page, compositing layers may not use accelerated drawing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=178749

--- Comment #3 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
There are two things going on here. First, in GraphicsLayerCA::commitLayerChangesBeforeSublayers() we call updateTiles() before updateAcceleratesDrawing(), so it's possible for tiles to not get accelerated.

Second, we create GraphicsLayers under style resolution, which happens before RenderLayerCompositor::cacheAcceleratedCompositingFlags(), so m_acceleratedDrawingEnabled is still false there.

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