commit a70e91c90e0e88f7e36ccb47725b6109d6bb2c99
author Robert Carr <racarr@google.com> Fri Jun 11 13:59:52 2021 -0700
committer Robert Carr <racarr@google.com> Mon Jun 21 21:58:09 2021 -0700
tree 4533986d86881a2fe556bf02d91c58b5da824f8a
parent b552ff5e4262640cbaefa0031e8b7b61e4864268

Protect committing child list behind visible regions changed

This can be further optimized but as a first pass checking for
visible regions will improve the buffer update path. In Layer.cpp,
we need to be sure updating Z-order sets the mVisibleRegionsChanged
flag directly rather than relying on doTransaction (as this now occurs
too late after being coalesced in to handlePageFlip).

Test: Existing tests pass. simpleperf
Bug: 186200583
Change-Id: I24be38594f13e774d20a2a32ad12676a4e3c3052