commit 67dd7126b52bf8ab25d89470392b887bccf0ad6f
author Tianhao Yao <tianhaoy@google.com> Tue Feb 22 17:48:33 2022 +0000
committer chaviw <chaviw@google.com> Wed May 04 11:46:47 2022 -0500
tree c5afc1ef4838d1de70df6195fb25948e17a770a1
parent ff4b9b8d6c4e059b4ad6eefdb5d418fae45cf897

Enable drawing layers' borders in SurfaceFlinger.

Provide an API on SurfaceComposerClient::Transaction for enabling
a border to be drawn for a specified hierarchy. The caller requests a
border to be drawn at a certain Layer and all its children will be
included when computing the visible region. The border will draw around
the union of all the layers' visible regions, starting from the
requested layer.

Test: go/wm-smoke
Test: LayerBorder_test
Bug: 225977175

Change-Id: I7760b51b68cdf01bb9146ec91a270a9d63927995