commit 215ae65e0c42972ad3fea4b24022316d793882e4
author Mason Freed <masonfreed@chromium.org> Thu Feb 07 02:07:35 2019
committer Commit Bot <commit-bot@chromium.org> Thu Feb 07 02:07:35 2019
tree 4626d36a42dae119daf5063c5a59b86d7934d8f3
parent 762d7248c097a67e161a5f3aee4ef4437555ecc5

Fix BGPT backdrop-filter with opacity<1 parent

Previous to this CL, a layer with opacity<1 that contained a single compositing
child with backdrop-filter would not be properly rendered, due to an
optimization that removed the render surface for the opacity<1 layer. That
would cause the backdrop-filter to filter elements higher up the tree than it
should, due to the lack of isolation imposed by the opacity<1 layer. With this
CL, this situation is properly detected and a render surface is assigned to the
opacity<1 layer.

As part of this CL, backdrop-filter was moved from the Filter node to the
Effect node. This is required, because a single element with both opacity
and backdrop-filter need to be contained in the same node, so that the
render surface created for the backdrop filter also sees the opacity.

Bug: 497522, 836885
Change-Id: Ie6ad38231ddfda02fae8d574ca8f30d075c673e5
Reviewed-on: https://chromium-review.googlesource.com/c/1399467
Commit-Queue: Mason Freed <masonfreed@chromium.org>
Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#629835}