diff --git a/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsImpl.java b/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsImpl.java
index 411e0f07f2be0..178a74cecc2ec 100644
--- a/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsImpl.java
@@ -95,9 +95,10 @@ public class GlobalActionsImpl implements GlobalActions, CommandQueue.Callbacks
 
         d.setOnShowListener(dialog -> {
             if (mBlurUtils.supportsBlursOnWindows()) {
-                background.setAlpha((int) (ScrimController.BUSY_SCRIM_ALPHA * 255));
+                int backgroundAlpha = (int) (ScrimController.BUSY_SCRIM_ALPHA * 255);
+                background.setAlpha(backgroundAlpha);
                 mBlurUtils.applyBlur(d.getWindow().getDecorView().getViewRootImpl(),
-                        mBlurUtils.blurRadiusOfRatio(1));
+                        mBlurUtils.blurRadiusOfRatio(1), backgroundAlpha == 255);
             } else {
                 float backgroundAlpha = mContext.getResources().getFloat(
                         com.android.systemui.R.dimen.shutdown_scrim_behind_alpha);
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/BlurUtils.kt b/packages/SystemUI/src/com/android/systemui/statusbar/BlurUtils.kt
index 9d52fe50a7d62..969877d5349cd 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/BlurUtils.kt
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/BlurUtils.kt
@@ -76,13 +76,14 @@ open class BlurUtils @Inject constructor(
      * @param viewRootImpl The window root.
      * @param radius blur radius in pixels.
      */
-    fun applyBlur(viewRootImpl: ViewRootImpl?, radius: Int) {
+    fun applyBlur(viewRootImpl: ViewRootImpl?, radius: Int, opaqueBackground: Boolean) {
         if (viewRootImpl == null || !viewRootImpl.surfaceControl.isValid ||
                 !supportsBlursOnWindows()) {
             return
         }
         createTransaction().use {
             it.setBackgroundBlurRadius(viewRootImpl.surfaceControl, radius)
+            it.setOpaque(viewRootImpl.surfaceControl, opaqueBackground)
             it.apply()
         }
     }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShadeDepthController.kt b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShadeDepthController.kt
index e8ce5f952b3bd..b7e8bfb3f2d1b 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShadeDepthController.kt
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShadeDepthController.kt
@@ -184,7 +184,7 @@ class NotificationShadeDepthController @Inject constructor(
             blur = 0
         }
 
-        blurUtils.applyBlur(blurRoot?.viewRootImpl ?: root.viewRootImpl, blur)
+        blurUtils.applyBlur(blurRoot?.viewRootImpl ?: root.viewRootImpl, blur, scrimsVisible)
         val zoomOut = blurUtils.ratioOfBlurRadius(blur)
         try {
             if (root.isAttachedToWindow && root.windowToken != null) {
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/BlurUtilsTest.kt b/packages/SystemUI/tests/src/com/android/systemui/statusbar/BlurUtilsTest.kt
index f48d693e3bb1c..7c7d2dc16c03e 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/BlurUtilsTest.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/BlurUtilsTest.kt
@@ -47,7 +47,7 @@ class BlurUtilsTest : SysuiTestCase() {
 
     @Test
     fun testApplyBlur_noViewRoot_doesntCrash() {
-        blurUtils.applyBlur(null /* viewRootImple */, 10 /* radius */)
+        blurUtils.applyBlur(null /* viewRootImple */, 10 /* radius */, false /* opaque */)
     }
 
     @Test
@@ -55,7 +55,7 @@ class BlurUtilsTest : SysuiTestCase() {
         val surfaceControl = mock(SurfaceControl::class.java)
         val viewRootImpl = mock(ViewRootImpl::class.java)
         `when`(viewRootImpl.surfaceControl).thenReturn(surfaceControl)
-        blurUtils.applyBlur(viewRootImpl, 10 /* radius */)
+        blurUtils.applyBlur(viewRootImpl, 10 /* radius */, false /* opaque */)
     }
 
     @Test
@@ -65,8 +65,9 @@ class BlurUtilsTest : SysuiTestCase() {
         val viewRootImpl = mock(ViewRootImpl::class.java)
         `when`(viewRootImpl.surfaceControl).thenReturn(surfaceControl)
         `when`(surfaceControl.isValid).thenReturn(true)
-        blurUtils.applyBlur(viewRootImpl, radius)
+        blurUtils.applyBlur(viewRootImpl, radius, true /* opaque */)
         verify(transaction).setBackgroundBlurRadius(eq(surfaceControl), eq(radius))
+        verify(transaction).setOpaque(eq(surfaceControl), eq(true))
         verify(transaction).apply()
     }
 
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/NotificationShadeDepthControllerTest.kt b/packages/SystemUI/tests/src/com/android/systemui/statusbar/NotificationShadeDepthControllerTest.kt
index a0c3ed9921151..4169cdd9eb126 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/NotificationShadeDepthControllerTest.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/NotificationShadeDepthControllerTest.kt
@@ -30,6 +30,7 @@ import com.android.systemui.plugins.statusbar.StatusBarStateController
 import com.android.systemui.statusbar.notification.ExpandAnimationParameters
 import com.android.systemui.statusbar.phone.BiometricUnlockController
 import com.android.systemui.statusbar.phone.DozeParameters
+import com.android.systemui.statusbar.phone.ScrimController
 import com.android.systemui.statusbar.policy.KeyguardStateController
 import com.android.systemui.util.mockito.eq
 import org.junit.Before
@@ -38,6 +39,7 @@ import org.junit.Test
 import org.junit.runner.RunWith
 import org.mockito.ArgumentCaptor
 import org.mockito.ArgumentMatchers.anyInt
+import org.mockito.Captor
 import org.mockito.Mock
 import org.mockito.Mockito.`when`
 import org.mockito.Mockito.any
@@ -49,6 +51,7 @@ import org.mockito.Mockito.never
 import org.mockito.Mockito.times
 import org.mockito.Mockito.verify
 import org.mockito.junit.MockitoJUnit
+import java.util.function.Consumer
 
 @RunWith(AndroidTestingRunner::class)
 @RunWithLooper
@@ -71,6 +74,7 @@ class NotificationShadeDepthControllerTest : SysuiTestCase() {
     @Mock private lateinit var globalActionsSpring: NotificationShadeDepthController.DepthAnimation
     @Mock private lateinit var listener: NotificationShadeDepthController.DepthListener
     @Mock private lateinit var dozeParameters: DozeParameters
+    @Captor private lateinit var scrimVisibilityCaptor: ArgumentCaptor<Consumer<Int>>
     @JvmField @Rule val mockitoRule = MockitoJUnit.rule()
 
     private lateinit var statusBarStateListener: StatusBarStateController.StateListener
@@ -102,6 +106,8 @@ class NotificationShadeDepthControllerTest : SysuiTestCase() {
         val captor = ArgumentCaptor.forClass(StatusBarStateController.StateListener::class.java)
         verify(statusBarStateController).addCallback(captor.capture())
         statusBarStateListener = captor.value
+        verify(notificationShadeWindowController)
+                .setScrimsVisibilityListener(scrimVisibilityCaptor.capture())
     }
 
     @Test
@@ -175,7 +181,7 @@ class NotificationShadeDepthControllerTest : SysuiTestCase() {
     fun setQsPanelExpansion_appliesBlur() {
         notificationShadeDepthController.qsPanelExpansion = 1f
         notificationShadeDepthController.updateBlurCallback.doFrame(0)
-        verify(blurUtils).applyBlur(any(), eq(maxBlur))
+        verify(blurUtils).applyBlur(any(), eq(maxBlur), eq(false))
     }
 
     @Test
@@ -188,7 +194,7 @@ class NotificationShadeDepthControllerTest : SysuiTestCase() {
     fun updateGlobalDialogVisibility_appliesBlur_withoutHomeControls() {
         `when`(globalActionsSpring.radius).thenReturn(maxBlur)
         notificationShadeDepthController.updateBlurCallback.doFrame(0)
-        verify(blurUtils).applyBlur(any(), eq(maxBlur))
+        verify(blurUtils).applyBlur(any(), eq(maxBlur), eq(false))
     }
 
     @Test
@@ -196,7 +202,7 @@ class NotificationShadeDepthControllerTest : SysuiTestCase() {
         notificationShadeDepthController.showingHomeControls = true
         `when`(globalActionsSpring.radius).thenReturn(maxBlur)
         notificationShadeDepthController.updateBlurCallback.doFrame(0)
-        verify(blurUtils).applyBlur(any(), eq(0))
+        verify(blurUtils).applyBlur(any(), eq(0), eq(false))
     }
 
     @Test
@@ -205,7 +211,14 @@ class NotificationShadeDepthControllerTest : SysuiTestCase() {
         notificationShadeDepthController.updateBlurCallback.doFrame(0)
         verify(wallpaperManager).setWallpaperZoomOut(any(), anyFloat())
         verify(listener).onWallpaperZoomOutChanged(anyFloat())
-        verify(blurUtils).applyBlur(any(), anyInt())
+        verify(blurUtils).applyBlur(any(), anyInt(), eq(false))
+    }
+
+    @Test
+    fun updateBlurCallback_setsOpaque_whenScrim() {
+        scrimVisibilityCaptor.value.accept(ScrimController.OPAQUE)
+        notificationShadeDepthController.updateBlurCallback.doFrame(0)
+        verify(blurUtils).applyBlur(any(), anyInt(), eq(true))
     }
 
     @Test
@@ -213,7 +226,7 @@ class NotificationShadeDepthControllerTest : SysuiTestCase() {
         `when`(shadeSpring.radius).thenReturn(maxBlur)
         `when`(shadeAnimation.radius).thenReturn(maxBlur)
         notificationShadeDepthController.updateBlurCallback.doFrame(0)
-        verify(blurUtils).applyBlur(any(), eq(maxBlur))
+        verify(blurUtils).applyBlur(any(), eq(maxBlur), eq(false))
     }
 
     @Test
@@ -224,7 +237,7 @@ class NotificationShadeDepthControllerTest : SysuiTestCase() {
         animProgress.linearProgress = 1f
         notificationShadeDepthController.notificationLaunchAnimationParams = animProgress
         notificationShadeDepthController.updateBlurCallback.doFrame(0)
-        verify(blurUtils).applyBlur(any(), eq(0))
+        verify(blurUtils).applyBlur(any(), eq(0), eq(false))
     }
 
     @Test