Have an actual fallback if the surface is lost

Bug: 17516789

This will force a relayout/reinitialize pass if the Surface
is lost mid-render instead of crashing on the next frame

Change-Id: If08bfa16f740728fa7c05904fa11e26f07b81e2e

1 files changed, 6 insertions, 0 deletions

diff --git a/libs/hwui/renderthread/DrawFrameTask.cpp b/libs/hwui/renderthread/DrawFrameTask.cpp
index dd34e095738d..97b31a95f278 100644
--- a/libs/hwui/renderthread/DrawFrameTask.cpp
+++ b/libs/hwui/renderthread/DrawFrameTask.cpp
@@ -132,6 +132,12 @@ bool DrawFrameTask::syncFrameState(TreeInfo& info) {
     mLayers.clear();
     mContext->prepareTree(info);
 
+    // This is after the prepareTree so that any pending operations
+    // (RenderNode tree state, prefetched layers, etc...) will be flushed.
+    if (CC_UNLIKELY(!mContext->hasSurface())) {
+        mSyncResult |= kSync_LostSurfaceRewardIfFound;
+    }
+
     if (info.out.hasAnimations) {
         if (info.out.requiresUiRedraw) {
             mSyncResult |= kSync_UIRedrawRequired;