[Webkit-unassigned] [Bug 142345] REGRESSION(r180924): ASSERTION FAILED: !from.isEmpty() in WebCore::TransformationMatrix::rectToRect

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=142345

--- Comment #4 from Martin Robinson <mrobinson at webkit.org> ---
Comment on attachment 247954
  --> https://bugs.webkit.org/attachment.cgi?id=247954
Patch

Okay. This is my suggestion for how to make this order independent:

1. In LayerTreeHostGtk::initialize, exit early if there is no contextID yet, but set a new boolean m_needsLazyInitialization to true.
2. In LayerTreeHostGtk::setNativeSurfaceHandleForCompositing, if m_needsLazyInitialization is true, call ::initialize.
3. Keep the rest of the code in the same position.

Hopefully, the issue with LayerTreeHostGtk::compositeLayersToContext will disappear because the first call to scheduleLayerFlush won't happen until ::initialize doesn't return early.

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