commit 063121849890da78b1ad7fb96c54c795de5d1fd6
author Pablo Ceballos <pceballos@google.com> Wed Oct 07 16:32:12 2015 -0700
committer Pablo Ceballos <pceballos@google.com> Tue Nov 03 12:04:10 2015 -0800
tree 47e2449faae2ae494528edecb4ba5cdb55fdda85
parent ccdfd60d79a8b7f1ed6401d0f2e8e29166a10584

SF: Force refresh when in single buffer mode

- Add a boolean to BufferItem to track whether single buffer mode is
  enabled. When it is, force SurfaceFlinger to acquire a new buffer
  and refresh on every vsync.

Bug 24940410

Change-Id: Iea67330c416b6fb14500865f98c67f1c12f23197

services/surfaceflinger/Layer.h

diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 4ff9006..9e3c4db 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -306,7 +306,8 @@
     /*
      * Returns if a frame is queued.
      */
-    bool hasQueuedFrame() const { return mQueuedFrames > 0 || mSidebandStreamChanged; }
+    bool hasQueuedFrame() const { return mQueuedFrames > 0 ||
+            mSidebandStreamChanged || mSingleBufferMode; }
 
     // -----------------------------------------------------------------------
 
@@ -489,6 +490,8 @@
     Vector<BufferItem> mQueueItems;
     uint64_t mLastFrameNumberReceived;
     bool mUpdateTexImageFailed; // This is only modified from the main thread
+
+    bool mSingleBufferMode;
 };
 
 // ---------------------------------------------------------------------------