1 files changed, 12 insertions, 0 deletions
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index 799a406..fc7bf0e 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -999,6 +999,17 @@ public final class ViewRootImpl implements ViewParent,
         }
     }
 
+    /**
+     * Notifies the HardwareRenderer that a new frame will be coming soon.
+     * Currently only {@link ThreadedRenderer} cares about this, and uses
+     * this knowledge to adjust the scheduling of off-thread animations
+     */
+    void notifyRendererOfFramePending() {
+        if (mAttachInfo.mHardwareRenderer != null) {
+            mAttachInfo.mHardwareRenderer.notifyFramePending();
+        }
+    }
+
     void scheduleTraversals() {
         if (!mTraversalScheduled) {
             mTraversalScheduled = true;
@@ -1006,6 +1017,7 @@ public final class ViewRootImpl implements ViewParent,
             mChoreographer.postCallback(
                     Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null);
             scheduleConsumeBatchedInput();
+            notifyRendererOfFramePending();
         }
     }