1 files changed, 26 insertions, 8 deletions

diff --git a/msm8996/sdm/libs/hwc2/hwc_layers.cpp b/msm8996/sdm/libs/hwc2/hwc_layers.cpp
index 935845e73..c3cab1ad1 100644
--- a/msm8996/sdm/libs/hwc2/hwc_layers.cpp
+++ b/msm8996/sdm/libs/hwc2/hwc_layers.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2017, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2017, 2019, The Linux Foundation. All rights reserved.
  * Not a Contribution.
  *
  * Copyright 2015 The Android Open Source Project
@@ -128,7 +128,21 @@ HWC2::Error HWCLayer::SetLayerBuffer(buffer_handle_t buffer, int32_t acquire_fen
 }
 
 HWC2::Error HWCLayer::SetLayerSurfaceDamage(hwc_region_t damage) {
-  // Check if there is an update in SurfaceDamage rects
+  surface_updated_ = true;
+  if ((damage.numRects == 1) && (damage.rects[0].bottom == 0) && (damage.rects[0].right == 0)) {
+    surface_updated_ = false;
+  }
+
+  if (!layer_->flags.updating && surface_updated_) {
+    needs_validate_ = true;
+  }
+
+  if (!partial_update_enabled_) {
+    SetDirtyRegions(damage);
+    return HWC2::Error::None;
+  }
+
+  // Check if there is an update in SurfaceDamage rects.
   if (layer_->dirty_regions.size() != damage.numRects) {
     needs_validate_ = true;
   } else {
@@ -142,12 +156,7 @@ HWC2::Error HWCLayer::SetLayerSurfaceDamage(hwc_region_t damage) {
     }
   }
 
-  layer_->dirty_regions.clear();
-  for (uint32_t i = 0; i < damage.numRects; i++) {
-    LayerRect rect;
-    SetRect(damage.rects[i], &rect);
-    layer_->dirty_regions.push_back(rect);
-  }
+  SetDirtyRegions(damage);
   return HWC2::Error::None;
 }
 
@@ -628,4 +637,13 @@ int32_t HWCLayer::PopReleaseFence(void) {
   return fence;
 }
 
+void HWCLayer::SetDirtyRegions(hwc_region_t surface_damage) {
+  layer_->dirty_regions.clear();
+  for (uint32_t i = 0; i < surface_damage.numRects; i++) {
+    LayerRect rect;
+    SetRect(surface_damage.rects[i], &rect);
+    layer_->dirty_regions.push_back(rect);
+  }
+}
+
 }  // namespace sdm