diff --git a/core/java/android/app/ActivityManager.java b/core/java/android/app/ActivityManager.java
index 2d73ce0..a18ba71 100644
--- a/core/java/android/app/ActivityManager.java
+++ b/core/java/android/app/ActivityManager.java
@@ -2101,15 +2101,17 @@
         private final int mOrientation;
         private final Rect mContentInsets;
         private final boolean mReducedResolution;
+        private final boolean mIsRealSnapshot;
         private final float mScale;
 
         public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets,
-                boolean reducedResolution, float scale) {
+                boolean reducedResolution, float scale, boolean isRealSnapshot) {
             mSnapshot = snapshot;
             mOrientation = orientation;
             mContentInsets = new Rect(contentInsets);
             mReducedResolution = reducedResolution;
             mScale = scale;
+            mIsRealSnapshot = isRealSnapshot;
         }
 
         private TaskSnapshot(Parcel source) {
@@ -2118,6 +2120,7 @@
             mContentInsets = source.readParcelable(null /* classLoader */);
             mReducedResolution = source.readBoolean();
             mScale = source.readFloat();
+            mIsRealSnapshot = source.readBoolean();
         }
 
         /**
@@ -2150,6 +2153,14 @@
         }
 
         /**
+         * @return Whether or not the snapshot is a real snapshot or an app-theme generated snapshot
+         * due to the task having a secure window or having previews disabled.
+         */
+        public boolean isRealSnapshot() {
+            return mIsRealSnapshot;
+        }
+
+        /**
          * @return The scale this snapshot was taken in.
          */
         public float getScale() {
@@ -2168,13 +2179,15 @@
             dest.writeParcelable(mContentInsets, 0);
             dest.writeBoolean(mReducedResolution);
             dest.writeFloat(mScale);
+            dest.writeBoolean(mIsRealSnapshot);
         }
 
         @Override
         public String toString() {
             return "TaskSnapshot{mSnapshot=" + mSnapshot + " mOrientation=" + mOrientation
                     + " mContentInsets=" + mContentInsets.toShortString()
-                    + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale;
+                    + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale
+                    + " mIsRealSnapshot=" + mIsRealSnapshot;
         }
 
         public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() {
diff --git a/packages/SystemUI/shared/src/com/android/systemui/shared/recents/model/ThumbnailData.java b/packages/SystemUI/shared/src/com/android/systemui/shared/recents/model/ThumbnailData.java
index dd1763b..924e85d 100644
--- a/packages/SystemUI/shared/src/com/android/systemui/shared/recents/model/ThumbnailData.java
+++ b/packages/SystemUI/shared/src/com/android/systemui/shared/recents/model/ThumbnailData.java
@@ -31,6 +31,7 @@
     public int orientation;
     public Rect insets;
     public boolean reducedResolution;
+    public boolean isRealSnapshot;
     public float scale;
 
     public ThumbnailData() {
@@ -39,6 +40,7 @@
         insets = new Rect();
         reducedResolution = false;
         scale = 1f;
+        isRealSnapshot = true;
     }
 
     public ThumbnailData(TaskSnapshot snapshot) {
@@ -47,5 +49,6 @@
         orientation = snapshot.getOrientation();
         reducedResolution = snapshot.isReducedResolution();
         scale = snapshot.getScale();
+        isRealSnapshot = snapshot.isRealSnapshot();
     }
 }
diff --git a/proto/src/task_snapshot.proto b/proto/src/task_snapshot.proto
index c9d5c27..490a59e 100644
--- a/proto/src/task_snapshot.proto
+++ b/proto/src/task_snapshot.proto
@@ -27,4 +27,5 @@
      int32 inset_top = 3;
      int32 inset_right = 4;
      int32 inset_bottom = 5;
+     bool is_real_snapshot = 6;
  }
\ No newline at end of file
diff --git a/services/core/java/com/android/server/wm/TaskSnapshotController.java b/services/core/java/com/android/server/wm/TaskSnapshotController.java
index a5a1ca5..9310dc4 100644
--- a/services/core/java/com/android/server/wm/TaskSnapshotController.java
+++ b/services/core/java/com/android/server/wm/TaskSnapshotController.java
@@ -273,7 +273,8 @@
         }
         return new TaskSnapshot(buffer, top.getConfiguration().orientation,
                 getInsetsFromTaskBounds(mainWindow, task),
-                isLowRamDevice /* reduced */, scaleFraction /* scale */);
+                isLowRamDevice /* reduced */, scaleFraction /* scale */,
+                true /* isRealSnapshot */);
     }
 
     private boolean shouldDisableSnapshots() {
@@ -369,7 +370,8 @@
         }
         return new TaskSnapshot(hwBitmap.createGraphicBufferHandle(),
                 topChild.getConfiguration().orientation, mainWindow.mStableInsets,
-                ActivityManager.isLowRamDeviceStatic() /* reduced */, 1.0f /* scale */);
+                ActivityManager.isLowRamDeviceStatic() /* reduced */, 1.0f /* scale */,
+                false /* isRealSnapshot */);
     }
 
     /**
diff --git a/services/core/java/com/android/server/wm/TaskSnapshotLoader.java b/services/core/java/com/android/server/wm/TaskSnapshotLoader.java
index 537f317..31da5f3 100644
--- a/services/core/java/com/android/server/wm/TaskSnapshotLoader.java
+++ b/services/core/java/com/android/server/wm/TaskSnapshotLoader.java
@@ -89,7 +89,8 @@
             }
             return new TaskSnapshot(buffer, proto.orientation,
                     new Rect(proto.insetLeft, proto.insetTop, proto.insetRight, proto.insetBottom),
-                    reducedResolution, reducedResolution ? REDUCED_SCALE : 1f);
+                    reducedResolution, reducedResolution ? REDUCED_SCALE : 1f,
+                    proto.isRealSnapshot);
         } catch (IOException e) {
             Slog.w(TAG, "Unable to load task snapshot data for taskId=" + taskId);
             return null;
diff --git a/services/core/java/com/android/server/wm/TaskSnapshotPersister.java b/services/core/java/com/android/server/wm/TaskSnapshotPersister.java
index 621bee7..086fffa 100644
--- a/services/core/java/com/android/server/wm/TaskSnapshotPersister.java
+++ b/services/core/java/com/android/server/wm/TaskSnapshotPersister.java
@@ -318,6 +318,7 @@
             proto.insetTop = mSnapshot.getContentInsets().top;
             proto.insetRight = mSnapshot.getContentInsets().right;
             proto.insetBottom = mSnapshot.getContentInsets().bottom;
+            proto.isRealSnapshot = mSnapshot.isRealSnapshot();
             final byte[] bytes = TaskSnapshotProto.toByteArray(proto);
             final File file = getProtoFile(mTaskId, mUserId);
             final AtomicFile atomicFile = new AtomicFile(file);
diff --git a/services/tests/servicestests/src/com/android/server/wm/TaskSnapshotPersisterLoaderTest.java b/services/tests/servicestests/src/com/android/server/wm/TaskSnapshotPersisterLoaderTest.java
index 96fbc14..80cbf2a 100644
--- a/services/tests/servicestests/src/com/android/server/wm/TaskSnapshotPersisterLoaderTest.java
+++ b/services/tests/servicestests/src/com/android/server/wm/TaskSnapshotPersisterLoaderTest.java
@@ -42,7 +42,7 @@
 /**
  * Test class for {@link TaskSnapshotPersister} and {@link TaskSnapshotLoader}
  *
- * runtest frameworks-services -c com.android.server.wm.TaskSnapshotPersisterLoaderTest
+ * atest FrameworksServicesTests:TaskSnapshotPersisterLoaderTest
  */
 @MediumTest
 @Presubmit
@@ -163,6 +163,23 @@
     }
 
     @Test
+    public void testIsRealSnapshotPersistAndLoadSnapshot() {
+        TaskSnapshot a = createSnapshot(1f /* scale */, true /* isRealSnapshot */);
+        TaskSnapshot b = createSnapshot(1f /* scale */, false /* isRealSnapshot */);
+        assertTrue(a.isRealSnapshot());
+        assertFalse(b.isRealSnapshot());
+        mPersister.persistSnapshot(1, mTestUserId, a);
+        mPersister.persistSnapshot(2, mTestUserId, b);
+        mPersister.waitForQueueEmpty();
+        final TaskSnapshot snapshotA = mLoader.loadTask(1, mTestUserId, false /* reduced */);
+        final TaskSnapshot snapshotB = mLoader.loadTask(2, mTestUserId, false /* reduced */);
+        assertNotNull(snapshotA);
+        assertNotNull(snapshotB);
+        assertTrue(snapshotA.isRealSnapshot());
+        assertFalse(snapshotB.isRealSnapshot());
+    }
+
+    @Test
     public void testRemoveObsoleteFiles() {
         mPersister.persistSnapshot(1, mTestUserId, createSnapshot());
         mPersister.persistSnapshot(2, mTestUserId, createSnapshot());
diff --git a/services/tests/servicestests/src/com/android/server/wm/TaskSnapshotPersisterTestBase.java b/services/tests/servicestests/src/com/android/server/wm/TaskSnapshotPersisterTestBase.java
index b49a0fd..2ad5bf4 100644
--- a/services/tests/servicestests/src/com/android/server/wm/TaskSnapshotPersisterTestBase.java
+++ b/services/tests/servicestests/src/com/android/server/wm/TaskSnapshotPersisterTestBase.java
@@ -84,12 +84,16 @@
     }
 
     TaskSnapshot createSnapshot(float scale) {
+        return createSnapshot(scale, true /* isRealSnapshot */);
+    }
+
+    TaskSnapshot createSnapshot(float scale, boolean isRealSnapshot) {
         final GraphicBuffer buffer = GraphicBuffer.create(100, 100, PixelFormat.RGBA_8888,
                 USAGE_HW_TEXTURE | USAGE_SW_READ_RARELY | USAGE_SW_READ_RARELY);
         Canvas c = buffer.lockCanvas();
         c.drawColor(Color.RED);
         buffer.unlockCanvasAndPost(c);
         return new TaskSnapshot(buffer, ORIENTATION_PORTRAIT, TEST_INSETS,
-                scale < 1f /* reducedResolution */, scale);
+                scale < 1f /* reducedResolution */, scale, isRealSnapshot);
     }
 }
diff --git a/services/tests/servicestests/src/com/android/server/wm/TaskSnapshotSurfaceTest.java b/services/tests/servicestests/src/com/android/server/wm/TaskSnapshotSurfaceTest.java
index 4288eac..d5334ba 100644
--- a/services/tests/servicestests/src/com/android/server/wm/TaskSnapshotSurfaceTest.java
+++ b/services/tests/servicestests/src/com/android/server/wm/TaskSnapshotSurfaceTest.java
@@ -60,7 +60,7 @@
         final GraphicBuffer buffer = GraphicBuffer.create(width, height, PixelFormat.RGBA_8888,
                 GraphicBuffer.USAGE_SW_READ_NEVER | GraphicBuffer.USAGE_SW_WRITE_NEVER);
         final TaskSnapshot snapshot = new TaskSnapshot(buffer,
-                ORIENTATION_PORTRAIT, contentInsets, false, 1.0f);
+                ORIENTATION_PORTRAIT, contentInsets, false, 1.0f, true /* isRealSnapshot */);
         mSurface = new TaskSnapshotSurface(sWm, new Window(), new Surface(), snapshot, "Test",
                 Color.WHITE, Color.RED, Color.BLUE, sysuiVis, windowFlags, 0, taskBounds,
                 ORIENTATION_PORTRAIT);