commit ddf9b5c4248c40dccff5b55c47a5125709f1109c
author Vishnu Nair <vishnun@google.com> Mon Mar 29 18:53:41 2021 -0700
committer Vishnu Nair <vishnun@google.com> Tue Mar 30 14:32:19 2021 -0700
tree c08aecbe6a41d2b5ebcc8f431ba53575702c2f72
parent 345c3c1be16ebfe3f1d0e823f5ddf1f1a7c35c70

Check for buffer changes explicitly instead of relying on acquire fence changes

Bug: 183997574
Test: atest ASurfaceControlTest
Change-Id: I4eabec13faa09b3d1f61d62e637b83baa720797d

libs/gui/LayerState.cpp

diff --git a/libs/gui/LayerState.cpp b/libs/gui/LayerState.cpp
index d653ae7..467dcda 100644
--- a/libs/gui/LayerState.cpp
+++ b/libs/gui/LayerState.cpp
@@ -563,6 +563,10 @@
     }
 }
 
+bool layer_state_t::hasBufferChanges() const {
+    return (what & layer_state_t::eBufferChanged) || (what & layer_state_t::eCachedBufferChanged);
+}
+
 status_t layer_state_t::matrix22_t::write(Parcel& output) const {
     SAFE_PARCEL(output.writeFloat, dsdx);
     SAFE_PARCEL(output.writeFloat, dtdx);