diff --git a/core/java/android/view/HardwareRenderer.java b/core/java/android/view/HardwareRenderer.java
index 6632f39d0c42d..5e5825049ed2b 100644
--- a/core/java/android/view/HardwareRenderer.java
+++ b/core/java/android/view/HardwareRenderer.java
@@ -260,7 +260,7 @@ public abstract class HardwareRenderer {
 
     /**
      * Gets the current width of the surface. This is the width that the surface
-     * was last set to in a call to {@link #setup(int, int, Rect)}.
+     * was last set to in a call to {@link #setup(int, int, View.AttachInfo, Rect)}.
      *
      * @return the current width of the surface
      */
@@ -268,7 +268,7 @@ public abstract class HardwareRenderer {
 
     /**
      * Gets the current height of the surface. This is the height that the surface
-     * was last set to in a call to {@link #setup(int, int, Rect)}.
+     * was last set to in a call to {@link #setup(int, int, View.AttachInfo, Rect)}.
      *
      * @return the current width of the surface
      */
@@ -373,19 +373,20 @@ public abstract class HardwareRenderer {
      *
      * @param width The width of the drawing surface.
      * @param height The height of the drawing surface.
+     * @param attachInfo Information about the window.
      * @param surface The surface to hardware accelerate
      * @param surfaceInsets The drawing surface insets to apply
      *
      * @return true if the surface was initialized, false otherwise. Returning
      *         false might mean that the surface was already initialized.
      */
-    boolean initializeIfNeeded(int width, int height, Surface surface, Rect surfaceInsets)
-            throws OutOfResourcesException {
+    boolean initializeIfNeeded(int width, int height, View.AttachInfo attachInfo,
+            Surface surface, Rect surfaceInsets) throws OutOfResourcesException {
         if (isRequested()) {
             // We lost the gl context, so recreate it.
             if (!isEnabled()) {
                 if (initialize(surface)) {
-                    setup(width, height, surfaceInsets);
+                    setup(width, height, attachInfo, surfaceInsets);
                     return true;
                 }
             }
@@ -398,9 +399,17 @@ public abstract class HardwareRenderer {
      *
      * @param width The width of the drawing surface.
      * @param height The height of the drawing surface.
+     * @param attachInfo Information about the window.
      * @param surfaceInsets The drawing surface insets to apply
      */
-    abstract void setup(int width, int height, Rect surfaceInsets);
+    abstract void setup(int width, int height, View.AttachInfo attachInfo, Rect surfaceInsets);
+
+    /**
+     * Updates the light position based on the position of the window.
+     *
+     * @param attachInfo Information about the window.
+     */
+    abstract void setLightCenter(View.AttachInfo attachInfo);
 
     /**
      * Optional, sets the name of the renderer. Useful for debugging purposes.
diff --git a/core/java/android/view/ThreadedRenderer.java b/core/java/android/view/ThreadedRenderer.java
index 1fd7109736b2f..7f243d3425d88 100644
--- a/core/java/android/view/ThreadedRenderer.java
+++ b/core/java/android/view/ThreadedRenderer.java
@@ -19,11 +19,10 @@ package android.view;
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.content.Context;
-import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.graphics.Bitmap;
+import android.graphics.Point;
 import android.graphics.Rect;
-import android.graphics.drawable.Drawable;
 import android.os.Binder;
 import android.os.IBinder;
 import android.os.ParcelFileDescriptor;
@@ -31,7 +30,6 @@ import android.os.RemoteException;
 import android.os.ServiceManager;
 import android.os.Trace;
 import android.util.Log;
-import android.util.LongSparseArray;
 import android.view.Surface.OutOfResourcesException;
 import android.view.View.AttachInfo;
 
@@ -41,8 +39,6 @@ import java.io.FileDescriptor;
 import java.io.PrintWriter;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
-import java.util.ArrayList;
-import java.util.HashSet;
 
 /**
  * Hardware renderer that proxies the rendering to a render thread. Most calls
@@ -197,10 +193,10 @@ public class ThreadedRenderer extends HardwareRenderer {
     }
 
     @Override
-    void setup(int width, int height, Rect surfaceInsets) {
-        final float lightX = width / 2.0f;
+    void setup(int width, int height, AttachInfo attachInfo, Rect surfaceInsets) {
         mWidth = width;
         mHeight = height;
+
         if (surfaceInsets != null && (surfaceInsets.left != 0 || surfaceInsets.right != 0
                 || surfaceInsets.top != 0 || surfaceInsets.bottom != 0)) {
             mHasInsets = true;
@@ -218,10 +214,23 @@ public class ThreadedRenderer extends HardwareRenderer {
             mSurfaceWidth = width;
             mSurfaceHeight = height;
         }
+
         mRootNode.setLeftTopRightBottom(-mInsetLeft, -mInsetTop, mSurfaceWidth, mSurfaceHeight);
-        nSetup(mNativeProxy, mSurfaceWidth, mSurfaceHeight,
-                lightX, mLightY, mLightZ, mLightRadius,
+        nSetup(mNativeProxy, mSurfaceWidth, mSurfaceHeight, mLightRadius,
                 mAmbientShadowAlpha, mSpotShadowAlpha);
+
+        setLightCenter(attachInfo);
+    }
+
+    @Override
+    void setLightCenter(AttachInfo attachInfo) {
+        // Adjust light position for window offsets.
+        final Point displaySize = attachInfo.mPoint;
+        attachInfo.mDisplay.getRealSize(displaySize);
+        final float lightX = displaySize.x / 2f - attachInfo.mWindowLeft;
+        final float lightY = mLightY - attachInfo.mWindowTop;
+
+        nSetLightCenter(mNativeProxy, lightX, lightY, mLightZ);
     }
 
     @Override
@@ -500,8 +509,9 @@ public class ThreadedRenderer extends HardwareRenderer {
     private static native void nUpdateSurface(long nativeProxy, Surface window);
     private static native boolean nPauseSurface(long nativeProxy, Surface window);
     private static native void nSetup(long nativeProxy, int width, int height,
-            float lightX, float lightY, float lightZ, float lightRadius,
-            int ambientShadowAlpha, int spotShadowAlpha);
+            float lightRadius, int ambientShadowAlpha, int spotShadowAlpha);
+    private static native void nSetLightCenter(long nativeProxy,
+            float lightX, float lightY, float lightZ);
     private static native void nSetOpaque(long nativeProxy, boolean opaque);
     private static native int nSyncAndDrawFrame(long nativeProxy, long[] frameInfo, int size);
     private static native void nDestroy(long nativeProxy);
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index 4f2a3fabbbaae..06dddfb2af919 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -1813,15 +1813,15 @@ public final class ViewRootImpl implements ViewParent,
                 }
             }
 
-            if (mAttachInfo.mHardwareRenderer != null &&
-                    mAttachInfo.mHardwareRenderer.isEnabled()) {
-                if (hwInitialized ||
-                        mWidth != mAttachInfo.mHardwareRenderer.getWidth() ||
-                        mHeight != mAttachInfo.mHardwareRenderer.getHeight()) {
-                    mAttachInfo.mHardwareRenderer.setup(
-                            mWidth, mHeight, mWindowAttributes.surfaceInsets);
+            final HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer;
+            if (hardwareRenderer != null && hardwareRenderer.isEnabled()) {
+                if (hwInitialized
+                        || mWidth != hardwareRenderer.getWidth()
+                        || mHeight != hardwareRenderer.getHeight()) {
+                    hardwareRenderer.setup(mWidth, mHeight, mAttachInfo,
+                            mWindowAttributes.surfaceInsets);
                     if (!hwInitialized) {
-                        mAttachInfo.mHardwareRenderer.invalidate(mSurface);
+                        hardwareRenderer.invalidate(mSurface);
                         mFullRedrawNeeded = true;
                     }
                 }
@@ -1897,6 +1897,11 @@ public final class ViewRootImpl implements ViewParent,
                 }
                 mAttachInfo.mWindowLeft = frame.left;
                 mAttachInfo.mWindowTop = frame.top;
+
+                // Update the light position for the new window offsets.
+                if (mAttachInfo.mHardwareRenderer != null) {
+                    mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo);
+                }
             }
         }
 
@@ -2605,7 +2610,7 @@ public final class ViewRootImpl implements ViewParent,
 
                     try {
                         mAttachInfo.mHardwareRenderer.initializeIfNeeded(
-                                mWidth, mHeight, mSurface, surfaceInsets);
+                                mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets);
                     } catch (OutOfResourcesException e) {
                         handleOutOfResourcesException(e);
                         return;
@@ -3300,7 +3305,7 @@ public final class ViewRootImpl implements ViewParent,
                                 final WindowManager.LayoutParams lp = mWindowAttributes;
                                 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null;
                                 mAttachInfo.mHardwareRenderer.initializeIfNeeded(
-                                        mWidth, mHeight, mSurface, surfaceInsets);
+                                        mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets);
                             } catch (OutOfResourcesException e) {
                                 Log.e(TAG, "OutOfResourcesException locking surface", e);
                                 try {
diff --git a/core/jni/android_view_Surface.cpp b/core/jni/android_view_Surface.cpp
index c4cd7ff1f0f21..3fa92a870ca76 100644
--- a/core/jni/android_view_Surface.cpp
+++ b/core/jni/android_view_Surface.cpp
@@ -483,7 +483,8 @@ static jlong create(JNIEnv* env, jclass clazz, jlong rootNodePtr, jlong surfaceP
     proxy->initialize(surface);
     // Shadows can't be used via this interface, so just set the light source
     // to all 0s. (and width & height are unused, TODO remove them)
-    proxy->setup(0, 0, (Vector3){0, 0, 0}, 0, 0, 0);
+    proxy->setup(0, 0, 0, 0, 0);
+    proxy->setLightCenter((Vector3){0, 0, 0});
     return (jlong) proxy;
 }
 
diff --git a/core/jni/android_view_ThreadedRenderer.cpp b/core/jni/android_view_ThreadedRenderer.cpp
index 5d5465bf75337..47132f40be21b 100644
--- a/core/jni/android_view_ThreadedRenderer.cpp
+++ b/core/jni/android_view_ThreadedRenderer.cpp
@@ -290,12 +290,15 @@ static jboolean android_view_ThreadedRenderer_pauseSurface(JNIEnv* env, jobject
 }
 
 static void android_view_ThreadedRenderer_setup(JNIEnv* env, jobject clazz, jlong proxyPtr,
-        jint width, jint height,
-        jfloat lightX, jfloat lightY, jfloat lightZ, jfloat lightRadius,
-        jint ambientShadowAlpha, jint spotShadowAlpha, jfloat density) {
+        jint width, jint height, jfloat lightRadius, jint ambientShadowAlpha, jint spotShadowAlpha) {
     RenderProxy* proxy = reinterpret_cast<RenderProxy*>(proxyPtr);
-    proxy->setup(width, height, (Vector3){lightX, lightY, lightZ}, lightRadius,
-            ambientShadowAlpha, spotShadowAlpha);
+    proxy->setup(width, height, lightRadius, ambientShadowAlpha, spotShadowAlpha);
+}
+
+static void android_view_ThreadedRenderer_setLightCenter(JNIEnv* env, jobject clazz,
+        jlong proxyPtr, jfloat lightX, jfloat lightY, jfloat lightZ) {
+    RenderProxy* proxy = reinterpret_cast<RenderProxy*>(proxyPtr);
+    proxy->setLightCenter((Vector3){lightX, lightY, lightZ});
 }
 
 static void android_view_ThreadedRenderer_setOpaque(JNIEnv* env, jobject clazz,
@@ -461,7 +464,8 @@ static JNINativeMethod gMethods[] = {
     { "nInitialize", "(JLandroid/view/Surface;)Z", (void*) android_view_ThreadedRenderer_initialize },
     { "nUpdateSurface", "(JLandroid/view/Surface;)V", (void*) android_view_ThreadedRenderer_updateSurface },
     { "nPauseSurface", "(JLandroid/view/Surface;)Z", (void*) android_view_ThreadedRenderer_pauseSurface },
-    { "nSetup", "(JIIFFFFII)V", (void*) android_view_ThreadedRenderer_setup },
+    { "nSetup", "(JIIFII)V", (void*) android_view_ThreadedRenderer_setup },
+    { "nSetLightCenter", "(JFFF)V", (void*) android_view_ThreadedRenderer_setLightCenter },
     { "nSetOpaque", "(JZ)V", (void*) android_view_ThreadedRenderer_setOpaque },
     { "nSyncAndDrawFrame", "(J[JI)I", (void*) android_view_ThreadedRenderer_syncAndDrawFrame },
     { "nDestroy", "(J)V", (void*) android_view_ThreadedRenderer_destroy },
diff --git a/libs/hwui/Layer.cpp b/libs/hwui/Layer.cpp
index 458f35b6b49b5..e16865ede1600 100644
--- a/libs/hwui/Layer.cpp
+++ b/libs/hwui/Layer.cpp
@@ -90,8 +90,10 @@ void Layer::updateLightPosFromRenderer(const OpenGLRenderer& rootRenderer) {
         // re-init renderer's light position, based upon last cached location in window
         Vector3 lightPos = rootRenderer.getLightCenter();
         cachedInvTransformInWindow.mapPoint3d(lightPos);
-        renderer->initLight(lightPos, rootRenderer.getLightRadius(),
-                rootRenderer.getAmbientShadowAlpha(), rootRenderer.getSpotShadowAlpha());
+        renderer->initLight(rootRenderer.getLightRadius(),
+                rootRenderer.getAmbientShadowAlpha(),
+                rootRenderer.getSpotShadowAlpha());
+        renderer->setLightCenter(lightPos);
         rendererLightPosDirty = false;
     }
 }
diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index 09674f73ca602..54bcd7e43d1d5 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -94,14 +94,17 @@ void OpenGLRenderer::initProperties() {
     }
 }
 
-void OpenGLRenderer::initLight(const Vector3& lightCenter, float lightRadius,
-        uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha) {
-    mLightCenter = lightCenter;
+void OpenGLRenderer::initLight(float lightRadius, uint8_t ambientShadowAlpha,
+        uint8_t spotShadowAlpha) {
     mLightRadius = lightRadius;
     mAmbientShadowAlpha = ambientShadowAlpha;
     mSpotShadowAlpha = spotShadowAlpha;
 }
 
+void OpenGLRenderer::setLightCenter(const Vector3& lightCenter) {
+    mLightCenter = lightCenter;
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // Setup
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/libs/hwui/OpenGLRenderer.h b/libs/hwui/OpenGLRenderer.h
index c34eb2c61f015..218818d8e41df 100755
--- a/libs/hwui/OpenGLRenderer.h
+++ b/libs/hwui/OpenGLRenderer.h
@@ -127,8 +127,9 @@ public:
     void setViewport(int width, int height) { mState.setViewport(width, height); }
 
     void initProperties();
-    void initLight(const Vector3& lightCenter, float lightRadius,
-            uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha);
+    void initLight(float lightRadius, uint8_t ambientShadowAlpha,
+            uint8_t spotShadowAlpha);
+    void setLightCenter(const Vector3& lightCenter);
 
     /*
      * Prepares the renderer to draw a frame. This method must be invoked
diff --git a/libs/hwui/renderthread/CanvasContext.cpp b/libs/hwui/renderthread/CanvasContext.cpp
index 6d7dcf1e1bd35..8329cd49101d0 100644
--- a/libs/hwui/renderthread/CanvasContext.cpp
+++ b/libs/hwui/renderthread/CanvasContext.cpp
@@ -127,10 +127,15 @@ bool CanvasContext::pauseSurface(ANativeWindow* window) {
 }
 
 // TODO: don't pass viewport size, it's automatic via EGL
-void CanvasContext::setup(int width, int height, const Vector3& lightCenter, float lightRadius,
+void CanvasContext::setup(int width, int height, float lightRadius,
         uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha) {
     if (!mCanvas) return;
-    mCanvas->initLight(lightCenter, lightRadius, ambientShadowAlpha, spotShadowAlpha);
+    mCanvas->initLight(lightRadius, ambientShadowAlpha, spotShadowAlpha);
+}
+
+void CanvasContext::setLightCenter(const Vector3& lightCenter) {
+    if (!mCanvas) return;
+    mCanvas->setLightCenter(lightCenter);
 }
 
 void CanvasContext::setOpaque(bool opaque) {
diff --git a/libs/hwui/renderthread/CanvasContext.h b/libs/hwui/renderthread/CanvasContext.h
index 8d543044234b6..17917af9d373e 100644
--- a/libs/hwui/renderthread/CanvasContext.h
+++ b/libs/hwui/renderthread/CanvasContext.h
@@ -72,8 +72,9 @@ public:
     bool pauseSurface(ANativeWindow* window);
     bool hasSurface() { return mNativeWindow.get(); }
 
-    void setup(int width, int height, const Vector3& lightCenter, float lightRadius,
+    void setup(int width, int height, float lightRadius,
             uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha);
+    void setLightCenter(const Vector3& lightCenter);
     void setOpaque(bool opaque);
     void makeCurrent();
     void processLayerUpdate(DeferredLayerUpdater* layerUpdater);
diff --git a/libs/hwui/renderthread/RenderProxy.cpp b/libs/hwui/renderthread/RenderProxy.cpp
index 17e47b9b771f0..d8a9921c08541 100644
--- a/libs/hwui/renderthread/RenderProxy.cpp
+++ b/libs/hwui/renderthread/RenderProxy.cpp
@@ -172,27 +172,37 @@ bool RenderProxy::pauseSurface(const sp<ANativeWindow>& window) {
     return (bool) postAndWait(task);
 }
 
-CREATE_BRIDGE7(setup, CanvasContext* context, int width, int height,
-        Vector3 lightCenter, float lightRadius,
-        uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha) {
-    args->context->setup(args->width, args->height, args->lightCenter, args->lightRadius,
+CREATE_BRIDGE6(setup, CanvasContext* context, int width, int height,
+        float lightRadius, uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha) {
+    args->context->setup(args->width, args->height, args->lightRadius,
             args->ambientShadowAlpha, args->spotShadowAlpha);
     return nullptr;
 }
 
-void RenderProxy::setup(int width, int height, const Vector3& lightCenter, float lightRadius,
+void RenderProxy::setup(int width, int height, float lightRadius,
         uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha) {
     SETUP_TASK(setup);
     args->context = mContext;
     args->width = width;
     args->height = height;
-    args->lightCenter = lightCenter;
     args->lightRadius = lightRadius;
     args->ambientShadowAlpha = ambientShadowAlpha;
     args->spotShadowAlpha = spotShadowAlpha;
     post(task);
 }
 
+CREATE_BRIDGE2(setLightCenter, CanvasContext* context, Vector3 lightCenter) {
+    args->context->setLightCenter(args->lightCenter);
+    return nullptr;
+}
+
+void RenderProxy::setLightCenter(const Vector3& lightCenter) {
+    SETUP_TASK(setLightCenter);
+    args->context = mContext;
+    args->lightCenter = lightCenter;
+    post(task);
+}
+
 CREATE_BRIDGE2(setOpaque, CanvasContext* context, bool opaque) {
     args->context->setOpaque(args->opaque);
     return nullptr;
diff --git a/libs/hwui/renderthread/RenderProxy.h b/libs/hwui/renderthread/RenderProxy.h
index 31456cdd076cf..5febbe0ab26c5 100644
--- a/libs/hwui/renderthread/RenderProxy.h
+++ b/libs/hwui/renderthread/RenderProxy.h
@@ -70,8 +70,9 @@ public:
     ANDROID_API bool initialize(const sp<ANativeWindow>& window);
     ANDROID_API void updateSurface(const sp<ANativeWindow>& window);
     ANDROID_API bool pauseSurface(const sp<ANativeWindow>& window);
-    ANDROID_API void setup(int width, int height, const Vector3& lightCenter, float lightRadius,
+    ANDROID_API void setup(int width, int height, float lightRadius,
             uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha);
+    ANDROID_API void setLightCenter(const Vector3& lightCenter);
     ANDROID_API void setOpaque(bool opaque);
     ANDROID_API int64_t* frameInfo();
     ANDROID_API int syncAndDrawFrame();
diff --git a/libs/hwui/tests/main.cpp b/libs/hwui/tests/main.cpp
index 2f79c5875e374..ceee953ef7c26 100644
--- a/libs/hwui/tests/main.cpp
+++ b/libs/hwui/tests/main.cpp
@@ -92,8 +92,8 @@ public:
         proxy->loadSystemProperties();
         proxy->initialize(surface);
         float lightX = width / 2.0;
-        proxy->setup(width, height, (Vector3){lightX, dp(-200.0f), dp(800.0f)},
-                dp(800.0f), 255 * 0.075, 255 * 0.15);
+        proxy->setup(width, height, dp(800.0f), 255 * 0.075, 255 * 0.15);
+        proxy->setLightCenter((Vector3){lightX, dp(-200.0f), dp(800.0f)});
 
         android::uirenderer::Rect DUMMY;