diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 539f2fe..953cdff 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -622,6 +622,8 @@
     snapshot->surfaceDamage = surfaceDamageRegion;
     snapshot->hasProtectedContent = isProtected();
     snapshot->dimmingEnabled = isDimmingEnabled();
+    snapshot->currentSdrHdrRatio = getCurrentSdrHdrRatio();
+    snapshot->desiredSdrHdrRatio = getDesiredSdrHdrRatio();
 
     const bool usesRoundedCorners = hasRoundedCorners();
 
@@ -3041,6 +3043,17 @@
     return true;
 }
 
+bool Layer::setExtendedRangeBrightness(float currentBufferRatio, float desiredRatio) {
+    if (mDrawingState.currentSdrHdrRatio == currentBufferRatio &&
+        mDrawingState.desiredSdrHdrRatio == desiredRatio)
+        return false;
+    mDrawingState.currentSdrHdrRatio = currentBufferRatio;
+    mDrawingState.desiredSdrHdrRatio = desiredRatio;
+    mDrawingState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
 bool Layer::setHdrMetadata(const HdrMetadata& hdrMetadata) {
     if (mDrawingState.hdrMetadata == hdrMetadata) return false;
     mDrawingState.hdrMetadata = hdrMetadata;
@@ -3272,7 +3285,11 @@
     auto lastDataspace = mBufferInfo.mDataspace;
     mBufferInfo.mDataspace = translateDataspace(mDrawingState.dataspace);
     if (lastDataspace != mBufferInfo.mDataspace) {
-        mFlinger->mSomeDataspaceChanged = true;
+        mFlinger->mHdrLayerInfoChanged = true;
+    }
+    if (mBufferInfo.mDesiredSdrHdrRatio != mDrawingState.desiredSdrHdrRatio) {
+        mBufferInfo.mDesiredSdrHdrRatio = mDrawingState.desiredSdrHdrRatio;
+        mFlinger->mHdrLayerInfoChanged = true;
     }
     mBufferInfo.mCrop = computeBufferCrop(mDrawingState);
     mBufferInfo.mScaleMode = NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW;
@@ -3563,6 +3580,14 @@
         }
     }
 
+    if (s.what & layer_state_t::eExtendedRangeBrightnessChanged) {
+        if (mDrawingState.currentSdrHdrRatio != s.currentSdrHdrRatio ||
+            mDrawingState.desiredSdrHdrRatio != s.desiredSdrHdrRatio) {
+            ALOGV("%s: false [eDimmingEnabledChanged changed]", __func__);
+            return false;
+        }
+    }
+
     ALOGV("%s: true", __func__);
     return true;
 }