From 32e9a43a6a6623fc02129a9e6f9e3ec7533036be Mon Sep 17 00:00:00 2001
From: Kalyan Kondapally <kalyan.kondapally@intel.com>
Date: Tue, 13 Feb 2018 02:39:53 -0800
Subject: [PATCH] Partial revert of "ff92a05232c5c56c63b99865dd149c4c9bcf59de"

Jira: None.
Test: "Rendering Layer outside Damaged Region" warnings are not seen
       when compositor trace is enabled.

Signed-off-by: Kalyan Kondapally <kalyan.kondapally@intel.com>
---
 common/compositor/compositor.cpp    |  3 ++-
 common/compositor/nativesurface.cpp | 17 +++++++++++++++++
 common/compositor/nativesurface.h   |  5 +++++
 3 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/common/compositor/compositor.cpp b/common/compositor/compositor.cpp
index 92632bf..a4b518c 100644
--- a/common/compositor/compositor.cpp
+++ b/common/compositor/compositor.cpp
@@ -98,7 +98,8 @@ bool Compositor::Draw(DisplayPlaneStateList &comp_planes,
       bool regions_empty = comp_regions.empty();
       NativeSurface *surface = plane.GetOffScreenTarget();
       if (!regions_empty &&
-          (surface->ClearSurface() || surface->IsPartialClear())) {
+          (surface->ClearSurface() || surface->IsPartialClear() ||
+           surface->IsSurfaceDamageChanged())) {
         plane.ResetCompositionRegion();
         regions_empty = true;
       }
diff --git a/common/compositor/nativesurface.cpp b/common/compositor/nativesurface.cpp
index 3914bcf..47bfbb1 100644
--- a/common/compositor/nativesurface.cpp
+++ b/common/compositor/nativesurface.cpp
@@ -72,6 +72,9 @@ void NativeSurface::SetNativeFence(int32_t fd) {
 void NativeSurface::SetClearSurface(ClearType clear_surface) {
   if (clear_surface_ != clear_surface) {
     clear_surface_ = clear_surface;
+    if (clear_surface_ == kFullClear) {
+      damage_changed_ = true;
+    }
   }
 }
 
@@ -83,11 +86,16 @@ void NativeSurface::SetSurfaceAge(int value) {
   surface_age_ = value;
 }
 
+bool NativeSurface::IsSurfaceDamageChanged() const {
+  return damage_changed_;
+}
+
 void NativeSurface::SetPlaneTarget(const DisplayPlaneState &plane,
                                    uint32_t gpu_fd) {
   const HwcRect<int> &display_rect = plane.GetDisplayFrame();
   surface_damage_ = display_rect;
   clear_surface_ = kFullClear;
+  damage_changed_ = true;
   surface_age_ = 0;
   if (layer_.GetBuffer()->GetFb() == 0) {
     layer_.GetBuffer()->CreateFrameBuffer(gpu_fd);
@@ -106,6 +114,7 @@ void NativeSurface::UpdateSurfaceDamage(
     const HwcRect<int> &currentsurface_damage) {
   if (surface_damage_.empty()) {
     surface_damage_ = currentsurface_damage;
+    damage_changed_ = true;
     return;
   }
 
@@ -113,11 +122,19 @@ void NativeSurface::UpdateSurfaceDamage(
     return;
   }
 
+  HwcRect<int> temp = surface_damage_;
   CalculateRect(currentsurface_damage, surface_damage_);
+  if (!damage_changed_) {
+    damage_changed_ = true;
+    if (temp == surface_damage_) {
+      damage_changed_ = false;
+    }
+  }
 }
 
 void NativeSurface::ResetDamage() {
   surface_damage_ = HwcRect<int>(0, 0, 0, 0);
+  damage_changed_ = false;
 }
 
 void NativeSurface::InitializeLayer(HWCNativeHandle native_handle) {
diff --git a/common/compositor/nativesurface.h b/common/compositor/nativesurface.h
index 8e03598..7a1c63d 100644
--- a/common/compositor/nativesurface.h
+++ b/common/compositor/nativesurface.h
@@ -112,6 +112,10 @@ class NativeSurface {
   // Applies rotation transform to this surface.
   void SetTransform(uint32_t transform);
 
+  // Returns true in case damage of this surface has changed
+  // compared to previous frame.
+  bool IsSurfaceDamageChanged() const;
+
  protected:
   OverlayLayer layer_;
   ResourceManager* resource_manager_;
@@ -123,6 +127,7 @@ class NativeSurface {
   int height_;
   ClearType clear_surface_;
   int surface_age_;
+  bool damage_changed_ = true;
   HwcRect<int> surface_damage_;
 };
 
-- 
2.11.0