commit a2f4e56fec0fb36c4a370eb23d6e9dc57f250b59
author Mathias Agopian <mathias@google.com> Sun Apr 15 23:34:59 2012 -0700
committer Mathias Agopian <mathias@google.com> Mon Apr 16 03:19:15 2012 -0700
tree ac9fd3893af5eb8547619f3116139006c3758154
parent 172a62a224967beee9e35e02a5b2fb2705dd2cc0

get rid off preserve backbuffer optimization in SF

this optimization didn't improve performance and in fact
seemed to hurt more than anything else. it also made
things a lot more complex as it introduced edges cases
when switching to/from h/w composer.

Change-Id: Iaafc235e175f5740cd98bff914d706e02ab88bb8

services/surfaceflinger/LayerBase.cpp

diff --git a/services/surfaceflinger/LayerBase.cpp b/services/surfaceflinger/LayerBase.cpp
index e764001..416fc93 100644
--- a/services/surfaceflinger/LayerBase.cpp
+++ b/services/surfaceflinger/LayerBase.cpp
@@ -43,7 +43,7 @@
     : dpy(display), contentDirty(false),
       sequence(uint32_t(android_atomic_inc(&sSequence))),
       mFlinger(flinger), mFiltering(false),
-      mNeedsFiltering(false), mInOverlay(false),
+      mNeedsFiltering(false),
       mOrientation(0),
       mPlaneOrientation(0),
       mTransactionFlags(0),
@@ -333,14 +333,6 @@
     hwcl->handle = NULL;
 }
 
-void LayerBase::setOverlay(bool inOverlay) {
-    mInOverlay = inOverlay;
-}
-
-bool LayerBase::isOverlay() const {
-    return mInOverlay;
-}
-
 void LayerBase::setFiltering(bool filtering)
 {
     mFiltering = filtering;