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Trim the render work done after a scene build #2936

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wants to merge 3 commits into from
Closed

Trim the render work done after a scene build #2936

wants to merge 3 commits into from
+83 −31

Commits on Jul 30, 2018

  1. Introduce a ClipRenderContext. 

    This groups together rendering-related arguments passed to the clip tree
update codepath.
    @staktrace
    staktrace committed Jul 30, 2018
    562ecfd

  2. Make the ClipRenderContext optional. 

    This allows us to update the clip scroll tree but outside the context of
a render. It just skips the steps that are specific to rendering.
    @staktrace
    staktrace committed Jul 30, 2018
    c0dd26e

  3. Add a mechanism to rebuild the hit tester without a full render. 

    This path just updates the clip scroll tree and hit-tester, without
doing all the extra render work needed for a full frame render. When we
do an async scene swap, we can use this instead of doing a full render
to get the hit-test information in sync with Gecko.

Fixes #2807
    @staktrace
    staktrace committed Jul 30, 2018
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