resolved conflicts for merge of a0f011ff to master

Change-Id: I4c17021fc269ce66c98cc345353600eda332f980

4 files changed, 18 insertions, 21 deletions

diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 15df888..fe4379d 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -58,7 +58,7 @@ Layer::Layer(SurfaceFlinger* flinger,
         mSecure(false),
         mTextureManager(),
         mBufferManager(mTextureManager),
-        mWidth(0), mHeight(0), mFixedSize(false)
+        mWidth(0), mHeight(0), mNeedsScaling(false), mFixedSize(false)
 {
 }
 
@@ -274,13 +274,10 @@ slowpath:
 
 void Layer::drawForSreenShot() const
 {
-    bool currentFixedSize = mFixedSize;
-    bool currentBlending = mNeedsBlending;
-    const_cast<Layer*>(this)->mFixedSize = false;
-    const_cast<Layer*>(this)->mFixedSize = true;
+    const bool currentFiltering = mNeedsFiltering;
+    const_cast<Layer*>(this)->mNeedsFiltering = true;
     LayerBase::drawForSreenShot();
-    const_cast<Layer*>(this)->mFixedSize = currentFixedSize;
-    const_cast<Layer*>(this)->mNeedsBlending = currentBlending;
+    const_cast<Layer*>(this)->mNeedsFiltering = currentFiltering;
 }
 
 void Layer::onDraw(const Region& clip) const
@@ -318,11 +315,10 @@ void Layer::onDraw(const Region& clip) const
 bool Layer::needsFiltering() const
 {
     if (!(mFlags & DisplayHardware::SLOW_CONFIG)) {
-        // NOTE: there is a race here, because mFixedSize is updated in a
-        // binder transaction. however, it doesn't really matter since it is
-        // evaluated each time we draw. To be perfectly correct, this flag
-        // would have to be associated with a buffer.
-        if (mFixedSize)
+        // if our buffer is not the same size than ourselves,
+        // we need filtering.
+        Mutex::Autolock _l(mLock);
+        if (mNeedsScaling)
             return true;
     }
     return LayerBase::needsFiltering();
@@ -396,6 +392,7 @@ sp<GraphicBuffer> Layer::requestBuffer(int index,
             mReqHeight = reqHeight;
             mReqFormat = reqFormat;
             mFixedSize = fixedSize;
+            mNeedsScaling = mWidth != mReqWidth || mHeight != mReqHeight;
 
             lcblk->reallocateAllExcept(index);
         }
@@ -519,6 +516,7 @@ void Layer::setBufferSize(uint32_t w, uint32_t h) {
     Mutex::Autolock _l(mLock);
     mWidth = w;
     mHeight = h;
+    mNeedsScaling = mWidth != mReqWidth || mHeight != mReqHeight;
 }
 
 bool Layer::isFixedSize() const {
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 07434cf..30021d3 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -233,6 +233,7 @@ private:
     uint32_t mReqWidth;
     uint32_t mReqHeight;
     uint32_t mReqFormat;
+    bool mNeedsScaling;
     bool mFixedSize;
 };
 
diff --git a/services/surfaceflinger/LayerBase.cpp b/services/surfaceflinger/LayerBase.cpp
index df6aa51..28b02c9 100644
--- a/services/surfaceflinger/LayerBase.cpp
+++ b/services/surfaceflinger/LayerBase.cpp
@@ -216,14 +216,10 @@ uint32_t LayerBase::doTransaction(uint32_t flags)
         flags |= eVisibleRegion;
         this->contentDirty = true;
 
-        mNeedsFiltering = false;
-        if (!(mFlags & DisplayHardware::SLOW_CONFIG)) {
-            // we may use linear filtering, if the matrix scales us
-            const uint8_t type = temp.transform.getType();
-            if (!temp.transform.preserveRects() || (type >= Transform::SCALE)) {
-                mNeedsFiltering = true;
-            }
-        }
+        // we may use linear filtering, if the matrix scales us
+        const uint8_t type = temp.transform.getType();
+        mNeedsFiltering = (!temp.transform.preserveRects() ||
+                (type >= Transform::SCALE));
     }
 
     // Commit the transaction
diff --git a/services/surfaceflinger/LayerBase.h b/services/surfaceflinger/LayerBase.h
index bdee05b..a4f1bb7 100644
--- a/services/surfaceflinger/LayerBase.h
+++ b/services/surfaceflinger/LayerBase.h
@@ -191,7 +191,9 @@ public:
     /**
      * needsLinearFiltering - true if this surface needs filtering
      */
-    virtual bool needsFiltering() const { return mNeedsFiltering; }
+    virtual bool needsFiltering() const {
+        return (!(mFlags & DisplayHardware::SLOW_CONFIG)) && mNeedsFiltering;
+    }
 
     /**
      * isSecure - true if this surface is secure, that is if it prevents