commit 8226051f627aa976700885cda28c26c5a5b8bc7b
author Fabien Sanglard <sanglardf@google.com> Fri Mar 03 14:58:52 2017 -0800
committer Fabien Sanglard <sanglardf@google.com> Fri Mar 03 17:06:37 2017 -0800
tree c143bcebcd67c172522650d04300b9c32858f15f
parent 1ed3d7936e1d45aff12461bd981d4f50df7ff0ba

[SurfaceFlinger] Comment SurfaceFlinger HWC2

Document decision to clear SurfaceFlinger HWC2 state upon sleep and
awake.

Test: This is just a comment.
Change-Id: I0034d8d79e6e0d5b6287579d23f941e291c89bc0

services/surfaceflinger/SurfaceFlinger.cpp

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index daeac27..2f354bb 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1595,6 +1595,9 @@
                                     nullptr);
                         }
                     } else {
+                        // WM changes displayDevice->layerStack upon sleep/awake.
+                        // Here we make sure we delete the HWC layers even if
+                        // WM changed their layer stack.
                         layer->setHwcLayer(displayDevice->getHwcDisplayId(),
                                 nullptr);
                     }