commit aa19456411ccb945c696b9d935c00992df534724
author Valerie Hau <vhau@google.com> Tue Feb 05 16:21:38 2019 -0800
committer Valerie Hau <vhau@google.com> Thu Feb 07 15:03:57 2019 -0800
tree fc2739daf6bb5e9287695619b378bfdab2500a95
parent e34aa6162e5f3eceefec489b4a048aa5d1e02e45

Background modifications trigger callbacks (BufferStateLayer)

Bug: 123875604
Test: build, boot, SurfaceFlinger_test

Change-Id: I00f254bb2d6ae9bbd9f623c75fbdc10b848b4b56

services/surfaceflinger/Layer.cpp

diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 2de169d..e76cbd3 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -1241,7 +1241,12 @@
 bool Layer::setBackgroundColor(const half3& color, float alpha, ui::Dataspace dataspace) {
     if (!mCurrentState.bgColorLayer && alpha == 0) {
         return false;
-    } else if (!mCurrentState.bgColorLayer && alpha != 0) {
+    }
+    mCurrentState.sequence++;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+
+    if (!mCurrentState.bgColorLayer && alpha != 0) {
         // create background color layer if one does not yet exist
         uint32_t flags = ISurfaceComposerClient::eFXSurfaceColor;
         const String8& name = mName + "BackgroundColorLayer";