Replace SurfaceControl call points with Transaction calls (1/n)

Removed calls to SurfaceControl methods that use the sGlobalTransaction
and changed to use the Transaction methods. Removed from all classes
except from WindowSurfaceController and deleted all unused methods from
SurfaceControl.

Test: go/wm-smoke
Change-Id: I69228214bdece20ea481c6d8041321f8385a446a
Exempt-From-Owner-Approval: Santos already +1'ed
diff --git a/core/java/android/view/SurfaceControl.java b/core/java/android/view/SurfaceControl.java
index b685cf0..6637c5b0 100644
--- a/core/java/android/view/SurfaceControl.java
+++ b/core/java/android/view/SurfaceControl.java
@@ -181,7 +181,6 @@
     private static native void nativeSeverChildren(long transactionObj, long nativeObject);
     private static native void nativeSetOverrideScalingMode(long transactionObj, long nativeObject,
             int scalingMode);
-    private static native boolean nativeGetTransformToDisplayInverse(long nativeObject);
 
     private static native Display.HdrCapabilities nativeGetHdrCapabilities(IBinder displayToken);
 
@@ -303,8 +302,8 @@
     /**
      * Surface creation flag: Creates a Dim surface.
      * Everything behind this surface is dimmed by the amount specified
-     * in {@link #setAlpha}.  It is an error to lock a Dim surface, since it
-     * doesn't have a backing store.
+     * in {@link Transaction#setAlpha(SurfaceControl, float)}.  It is an error to lock a Dim
+     * surface, since it doesn't have a backing store.
      *
      * @hide
      */
@@ -740,20 +739,20 @@
      * <p>
      * Good practice is to first create the surface with the {@link #HIDDEN} flag
      * specified, open a transaction, set the surface layer, layer stack, alpha,
-     * and position, call {@link #show} if appropriate, and close the transaction.
+     * and position, call {@link Transaction#show(SurfaceControl)} if appropriate, and close the
+     * transaction.
      * <p>
      * Bounds of the surface is determined by its crop and its buffer size. If the
      * surface has no buffer or crop, the surface is boundless and only constrained
      * by the size of its parent bounds.
      *
-     * @param session The surface session, must not be null.
-     * @param name The surface name, must not be null.
-     * @param w The surface initial width.
-     * @param h The surface initial height.
-     * @param flags The surface creation flags.  Should always include {@link #HIDDEN}
-     * in the creation flags.
+     * @param session  The surface session, must not be null.
+     * @param name     The surface name, must not be null.
+     * @param w        The surface initial width.
+     * @param h        The surface initial height.
+     * @param flags    The surface creation flags.  Should always include {@link #HIDDEN}
+     *                 in the creation flags.
      * @param metadata Initial metadata.
-     *
      * @throws throws OutOfResourcesException If the SurfaceControl cannot be created.
      */
     private SurfaceControl(SurfaceSession session, String name, int w, int h, int format, int flags,
@@ -1014,15 +1013,6 @@
     /**
      * @hide
      */
-    public void deferTransactionUntil(Surface barrier, long frame) {
-        synchronized(SurfaceControl.class) {
-            sGlobalTransaction.deferTransactionUntilSurface(this, barrier, frame);
-        }
-    }
-
-    /**
-     * @hide
-     */
     public void reparentChildren(SurfaceControl newParent) {
         synchronized(SurfaceControl.class) {
             sGlobalTransaction.reparentChildren(this, newParent);
@@ -1032,15 +1022,6 @@
     /**
      * @hide
      */
-    public void reparent(SurfaceControl newParent) {
-        synchronized(SurfaceControl.class) {
-            sGlobalTransaction.reparent(this, newParent);
-        }
-    }
-
-    /**
-     * @hide
-     */
     public void detachChildren() {
         synchronized(SurfaceControl.class) {
             sGlobalTransaction.detachChildren(this);
@@ -1060,15 +1041,6 @@
     /**
      * @hide
      */
-    public static void setAnimationTransaction() {
-        synchronized (SurfaceControl.class) {
-            sGlobalTransaction.setAnimationTransaction();
-        }
-    }
-
-    /**
-     * @hide
-     */
     @UnsupportedAppUsage
     public void setLayer(int zorder) {
         checkNotReleased();
@@ -1080,16 +1052,6 @@
     /**
      * @hide
      */
-    public void setRelativeLayer(SurfaceControl relativeTo, int zorder) {
-        checkNotReleased();
-        synchronized(SurfaceControl.class) {
-            sGlobalTransaction.setRelativeLayer(this, relativeTo, zorder);
-        }
-    }
-
-    /**
-     * @hide
-     */
     @UnsupportedAppUsage
     public void setPosition(float x, float y) {
         checkNotReleased();
@@ -1183,16 +1145,6 @@
     /**
      * @hide
      */
-    public void setColor(@Size(3) float[] color) {
-        checkNotReleased();
-        synchronized (SurfaceControl.class) {
-            sGlobalTransaction.setColor(this, color);
-        }
-    }
-
-    /**
-     * @hide
-     */
     public void setMatrix(float dsdx, float dtdx, float dtdy, float dsdy) {
         checkNotReleased();
         synchronized(SurfaceControl.class) {
@@ -1201,36 +1153,6 @@
     }
 
     /**
-     * Sets the transform and position of a {@link SurfaceControl} from a 3x3 transformation matrix.
-     *
-     * @param matrix The matrix to apply.
-     * @param float9 An array of 9 floats to be used to extract the values from the matrix.
-     * @hide
-     */
-    public void setMatrix(Matrix matrix, float[] float9) {
-        checkNotReleased();
-        matrix.getValues(float9);
-        synchronized (SurfaceControl.class) {
-            sGlobalTransaction.setMatrix(this, float9[MSCALE_X], float9[MSKEW_Y],
-                    float9[MSKEW_X], float9[MSCALE_Y]);
-            sGlobalTransaction.setPosition(this, float9[MTRANS_X], float9[MTRANS_Y]);
-        }
-    }
-
-    /**
-     * Sets the color transform for the Surface.
-     * @param matrix A float array with 9 values represents a 3x3 transform matrix
-     * @param translation A float array with 3 values represents a translation vector
-     * @hide
-     */
-    public void setColorTransform(@Size(9) float[] matrix, @Size(3) float[] translation) {
-        checkNotReleased();
-        synchronized (SurfaceControl.class) {
-            sGlobalTransaction.setColorTransform(this, matrix, translation);
-        }
-    }
-
-    /**
      * Sets the Surface to be color space agnostic. If a surface is color space agnostic,
      * the color can be interpreted in any color space.
      * @param agnostic A boolean to indicate whether the surface is color space agnostic
@@ -1260,43 +1182,6 @@
     }
 
     /**
-     * Same as {@link SurfaceControl#setWindowCrop(Rect)} but sets the crop rect top left at 0, 0.
-     *
-     * @param width width of crop rect
-     * @param height height of crop rect
-     * @hide
-     */
-    public void setWindowCrop(int width, int height) {
-        checkNotReleased();
-        synchronized (SurfaceControl.class) {
-            sGlobalTransaction.setWindowCrop(this, width, height);
-        }
-    }
-
-    /**
-     * Sets the corner radius of a {@link SurfaceControl}.
-     *
-     * @param cornerRadius Corner radius in pixels.
-     * @hide
-     */
-    public void setCornerRadius(float cornerRadius) {
-        checkNotReleased();
-        synchronized (SurfaceControl.class) {
-            sGlobalTransaction.setCornerRadius(this, cornerRadius);
-        }
-    }
-
-    /**
-     * @hide
-     */
-    public void setLayerStack(int layerStack) {
-        checkNotReleased();
-        synchronized(SurfaceControl.class) {
-            sGlobalTransaction.setLayerStack(this, layerStack);
-        }
-    }
-
-    /**
      * @hide
      */
     public void setOpaque(boolean isOpaque) {
@@ -2302,6 +2187,12 @@
         }
 
         /**
+         * Sets the transform and position of a {@link SurfaceControl} from a 3x3 transformation
+         * matrix.
+         *
+         * @param sc     SurfaceControl to set matrix of
+         * @param matrix The matrix to apply.
+         * @param float9 An array of 9 floats to be used to extract the values from the matrix.
          * @hide
          */
         @UnsupportedAppUsage
@@ -2315,7 +2206,9 @@
 
         /**
          * Sets the color transform for the Surface.
-         * @param matrix A float array with 9 values represents a 3x3 transform matrix
+         *
+         * @param sc          SurfaceControl to set color transform of
+         * @param matrix      A float array with 9 values represents a 3x3 transform matrix
          * @param translation A float array with 3 values represents a translation vector
          * @hide
          */
@@ -2339,6 +2232,13 @@
         }
 
         /**
+         * Bounds the surface and its children to the bounds specified. Size of the surface will be
+         * ignored and only the crop and buffer size will be used to determine the bounds of the
+         * surface. If no crop is specified and the surface has no buffer, the surface bounds is
+         * only constrained by the size of its parent bounds.
+         *
+         * @param sc   SurfaceControl to set crop of.
+         * @param crop Bounds of the crop to apply.
          * @hide
          */
         @UnsupportedAppUsage
@@ -2355,6 +2255,12 @@
         }
 
         /**
+         * Same as {@link Transaction#setWindowCrop(SurfaceControl, Rect)} but sets the crop rect
+         * top left at 0, 0.
+         *
+         * @param sc     SurfaceControl to set crop of.
+         * @param width  width of crop rect
+         * @param height height of crop rect
          * @hide
          */
         public Transaction setWindowCrop(SurfaceControl sc, int width, int height) {
diff --git a/core/java/android/view/SurfaceView.java b/core/java/android/view/SurfaceView.java
index a858300..2f0a4eb 100644
--- a/core/java/android/view/SurfaceView.java
+++ b/core/java/android/view/SurfaceView.java
@@ -418,12 +418,7 @@
                     Log.d(TAG, System.identityHashCode(this)
                             + " updateSurfaceAlpha: set alpha=" + alpha);
                 }
-                SurfaceControl.openTransaction();
-                try {
-                    mSurfaceControl.setAlpha(alpha);
-                } finally {
-                    SurfaceControl.closeTransaction();
-                }
+                mTmpTransaction.setAlpha(mSurfaceControl, alpha).apply();
             }
             mSurfaceAlpha = alpha;
         }
@@ -701,17 +696,18 @@
         }
     }
 
-    private void updateBackgroundVisibilityInTransaction() {
+    private void updateBackgroundVisibility(Transaction t) {
         if (mBackgroundControl == null) {
             return;
         }
         if ((mSubLayer < 0) && ((mSurfaceFlags & SurfaceControl.OPAQUE) != 0)) {
-            mBackgroundControl.show();
+            t.show(mBackgroundControl);
         } else {
-            mBackgroundControl.hide();
+            t.hide(mBackgroundControl);
         }
     }
 
+
     private void releaseSurfaces() {
         mSurfaceAlpha = 1f;
 
@@ -853,60 +849,60 @@
                     if (DEBUG) Log.i(TAG, System.identityHashCode(this) + " "
                             + "Cur surface: " + mSurface);
 
-                    SurfaceControl.openTransaction();
-                    try {
-                        // If we are creating the surface control or the parent surface has not
-                        // changed, then set relative z. Otherwise allow the parent
-                        // SurfaceChangedCallback to update the relative z. This is needed so that
-                        // we do not change the relative z before the server is ready to swap the
-                        // parent surface.
-                        if (creating || (mParentSurfaceGenerationId
-                                == viewRoot.mSurface.getGenerationId())) {
-                            SurfaceControl.mergeToGlobalTransaction(updateRelativeZ());
-                        }
-                        mParentSurfaceGenerationId = viewRoot.mSurface.getGenerationId();
-
-                        if (mViewVisibility) {
-                            mSurfaceControl.show();
-                        } else {
-                            mSurfaceControl.hide();
-                        }
-                        updateBackgroundVisibilityInTransaction();
-                        if (mUseAlpha) {
-                            mSurfaceControl.setAlpha(alpha);
-                            mSurfaceAlpha = alpha;
-                        }
-
-                        // While creating the surface, we will set it's initial
-                        // geometry. Outside of that though, we should generally
-                        // leave it to the RenderThread.
-                        //
-                        // There is one more case when the buffer size changes we aren't yet
-                        // prepared to sync (as even following the transaction applying
-                        // we still need to latch a buffer).
-                        // b/28866173
-                        if (sizeChanged || creating || !mRtHandlingPositionUpdates) {
-                            mSurfaceControl.setPosition(mScreenRect.left, mScreenRect.top);
-                            mSurfaceControl.setMatrix(mScreenRect.width() / (float) mSurfaceWidth,
-                                    0.0f, 0.0f,
-                                    mScreenRect.height() / (float) mSurfaceHeight);
-                            // Set a window crop when creating the surface or changing its size to
-                            // crop the buffer to the surface size since the buffer producer may
-                            // use SCALING_MODE_SCALE and submit a larger size than the surface
-                            // size.
-                            if (mClipSurfaceToBounds && mClipBounds != null) {
-                                mSurfaceControl.setWindowCrop(mClipBounds);
-                            } else {
-                                mSurfaceControl.setWindowCrop(mSurfaceWidth, mSurfaceHeight);
-                            }
-                        }
-                        mSurfaceControl.setCornerRadius(mCornerRadius);
-                        if (sizeChanged && !creating) {
-                            mSurfaceControl.setBufferSize(mSurfaceWidth, mSurfaceHeight);
-                        }
-                    } finally {
-                        SurfaceControl.closeTransaction();
+                    // If we are creating the surface control or the parent surface has not
+                    // changed, then set relative z. Otherwise allow the parent
+                    // SurfaceChangedCallback to update the relative z. This is needed so that
+                    // we do not change the relative z before the server is ready to swap the
+                    // parent surface.
+                    if (creating || (mParentSurfaceGenerationId
+                            == viewRoot.mSurface.getGenerationId())) {
+                        updateRelativeZ(mTmpTransaction);
                     }
+                    mParentSurfaceGenerationId = viewRoot.mSurface.getGenerationId();
+
+                    if (mViewVisibility) {
+                        mTmpTransaction.show(mSurfaceControl);
+                    } else {
+                        mTmpTransaction.hide(mSurfaceControl);
+                    }
+                    updateBackgroundVisibility(mTmpTransaction);
+                    if (mUseAlpha) {
+                        mTmpTransaction.setAlpha(mSurfaceControl, alpha);
+                        mSurfaceAlpha = alpha;
+                    }
+
+                    // While creating the surface, we will set it's initial
+                    // geometry. Outside of that though, we should generally
+                    // leave it to the RenderThread.
+                    //
+                    // There is one more case when the buffer size changes we aren't yet
+                    // prepared to sync (as even following the transaction applying
+                    // we still need to latch a buffer).
+                    // b/28866173
+                    if (sizeChanged || creating || !mRtHandlingPositionUpdates) {
+                        mTmpTransaction.setPosition(mSurfaceControl, mScreenRect.left,
+                                mScreenRect.top);
+                        mTmpTransaction.setMatrix(mSurfaceControl,
+                                mScreenRect.width() / (float) mSurfaceWidth, 0.0f, 0.0f,
+                                mScreenRect.height() / (float) mSurfaceHeight);
+                        // Set a window crop when creating the surface or changing its size to
+                        // crop the buffer to the surface size since the buffer producer may
+                        // use SCALING_MODE_SCALE and submit a larger size than the surface
+                        // size.
+                        if (mClipSurfaceToBounds && mClipBounds != null) {
+                            mTmpTransaction.setWindowCrop(mSurfaceControl, mClipBounds);
+                        } else {
+                            mTmpTransaction.setWindowCrop(mSurfaceControl, mSurfaceWidth,
+                                    mSurfaceHeight);
+                        }
+                    }
+                    mTmpTransaction.setCornerRadius(mSurfaceControl, mCornerRadius);
+                    if (sizeChanged && !creating) {
+                        mTmpTransaction.setBufferSize(mSurfaceControl, mSurfaceWidth,
+                                mSurfaceHeight);
+                    }
+
+                    mTmpTransaction.apply();
 
                     if (sizeChanged || creating) {
                         redrawNeeded = true;
@@ -1260,12 +1256,7 @@
         final float[] colorComponents = new float[] { Color.red(bgColor) / 255.f,
                 Color.green(bgColor) / 255.f, Color.blue(bgColor) / 255.f };
 
-        SurfaceControl.openTransaction();
-        try {
-            mBackgroundControl.setColor(colorComponents);
-        } finally {
-            SurfaceControl.closeTransaction();
-        }
+        mTmpTransaction.setColor(mBackgroundControl, colorComponents).apply();
     }
 
     @UnsupportedAppUsage
@@ -1480,15 +1471,13 @@
     @Override
     public void surfaceReplaced(Transaction t) {
         if (mSurfaceControl != null && mBackgroundControl != null) {
-            t.merge(updateRelativeZ());
+            updateRelativeZ(t);
         }
     }
 
-    private Transaction updateRelativeZ() {
-        Transaction t = new Transaction();
+    private void updateRelativeZ(Transaction t) {
         SurfaceControl viewRoot = getViewRootImpl().getSurfaceControl();
         t.setRelativeLayer(mBackgroundControl, viewRoot, Integer.MIN_VALUE);
         t.setRelativeLayer(mSurfaceControl, viewRoot, mSubLayer);
-        return t;
     }
 }
diff --git a/services/core/java/com/android/server/display/ColorFade.java b/services/core/java/com/android/server/display/ColorFade.java
index c46fc20..29026e8 100644
--- a/services/core/java/com/android/server/display/ColorFade.java
+++ b/services/core/java/com/android/server/display/ColorFade.java
@@ -114,6 +114,8 @@
     private final FloatBuffer mVertexBuffer = createNativeFloatBuffer(8);
     private final FloatBuffer mTexCoordBuffer = createNativeFloatBuffer(8);
 
+    private final Transaction mTransaction = new Transaction();
+
     /**
      * Animates an color fade warming up.
      */
@@ -659,14 +661,10 @@
 
     private boolean showSurface(float alpha) {
         if (!mSurfaceVisible || mSurfaceAlpha != alpha) {
-            SurfaceControl.openTransaction();
-            try {
-                mSurfaceControl.setLayer(COLOR_FADE_LAYER);
-                mSurfaceControl.setAlpha(alpha);
-                mSurfaceControl.show();
-            } finally {
-                SurfaceControl.closeTransaction();
-            }
+            mTransaction.setLayer(mSurfaceControl, COLOR_FADE_LAYER)
+                    .setAlpha(mSurfaceControl, alpha)
+                    .show(mSurfaceControl)
+                    .apply();
             mSurfaceVisible = true;
             mSurfaceAlpha = alpha;
         }
diff --git a/services/core/java/com/android/server/wm/AccessibilityController.java b/services/core/java/com/android/server/wm/AccessibilityController.java
index 59f051b..10415f5 100644
--- a/services/core/java/com/android/server/wm/AccessibilityController.java
+++ b/services/core/java/com/android/server/wm/AccessibilityController.java
@@ -271,11 +271,11 @@
         }
     }
 
-    /** NOTE: This has to be called within a surface transaction. */
-    public void drawMagnifiedRegionBorderIfNeededLocked(int displayId) {
+    public void drawMagnifiedRegionBorderIfNeededLocked(int displayId,
+            SurfaceControl.Transaction t) {
         final DisplayMagnifier displayMagnifier = mDisplayMagnifiers.get(displayId);
         if (displayMagnifier != null) {
-            displayMagnifier.drawMagnifiedRegionBorderIfNeededLocked();
+            displayMagnifier.drawMagnifiedRegionBorderIfNeededLocked(t);
         }
         // Not relevant for the window observer.
     }
@@ -431,7 +431,7 @@
                 Slog.i(LOG_TAG, "Rotation: " + Surface.rotationToString(rotation)
                         + " displayId: " + displayContent.getDisplayId());
             }
-            mMagnifedViewport.onRotationChangedLocked();
+            mMagnifedViewport.onRotationChangedLocked(displayContent.getPendingTransaction());
             mHandler.sendEmptyMessage(MyHandler.MESSAGE_NOTIFY_ROTATION_CHANGED);
         }
 
@@ -536,9 +536,8 @@
                     .sendToTarget();
         }
 
-        /** NOTE: This has to be called within a surface transaction. */
-        public void drawMagnifiedRegionBorderIfNeededLocked() {
-            mMagnifedViewport.drawWindowIfNeededLocked();
+        public void drawMagnifiedRegionBorderIfNeededLocked(SurfaceControl.Transaction t) {
+            mMagnifedViewport.drawWindowIfNeededLocked(t);
         }
 
         private final class MagnifiedViewport {
@@ -744,7 +743,7 @@
                 return letterboxBounds;
             }
 
-            public void onRotationChangedLocked() {
+            public void onRotationChangedLocked(SurfaceControl.Transaction t) {
                 // If we are showing the magnification border, hide it immediately so
                 // the user does not see strange artifacts during rotation. The screenshot
                 // used for rotation already has the border. After the rotation is complete
@@ -758,7 +757,7 @@
                     mHandler.sendMessageDelayed(message, delay);
                 }
                 recomputeBoundsLocked();
-                mWindow.updateSize();
+                mWindow.updateSize(t);
             }
 
             public void setMagnifiedRegionBorderShownLocked(boolean shown, boolean animate) {
@@ -784,10 +783,9 @@
                 return mMagnificationSpec;
             }
 
-            /** NOTE: This has to be called within a surface transaction. */
-            public void drawWindowIfNeededLocked() {
+            public void drawWindowIfNeededLocked(SurfaceControl.Transaction t) {
                 recomputeBoundsLocked();
-                mWindow.drawIfNeeded();
+                mWindow.drawIfNeeded(t);
             }
 
             public void destroyWindow() {
@@ -837,10 +835,11 @@
                         /* ignore */
                     }
                     mSurfaceControl = surfaceControl;
-                    mSurfaceControl.setLayer(mService.mPolicy.getWindowLayerFromTypeLw(
-                            TYPE_MAGNIFICATION_OVERLAY)
-                            * WindowManagerService.TYPE_LAYER_MULTIPLIER);
-                    mSurfaceControl.setPosition(0, 0);
+                    mService.mTransactionFactory.get().setLayer(mSurfaceControl,
+                            mService.mPolicy.getWindowLayerFromTypeLw(TYPE_MAGNIFICATION_OVERLAY)
+                                    * WindowManagerService.TYPE_LAYER_MULTIPLIER)
+                            .setPosition(mSurfaceControl, 0, 0)
+                            .apply();
                     mSurface.copyFrom(mSurfaceControl);
 
                     mAnimationController = new AnimationController(context,
@@ -905,10 +904,10 @@
                     }
                 }
 
-                public void updateSize() {
+                public void updateSize(SurfaceControl.Transaction t) {
                     synchronized (mService.mGlobalLock) {
                         mWindowManager.getDefaultDisplay().getRealSize(mTempPoint);
-                        mSurfaceControl.setBufferSize(mTempPoint.x, mTempPoint.y);
+                        t.setBufferSize(mSurfaceControl, mTempPoint.x, mTempPoint.y);
                         invalidate(mDirtyRect);
                     }
                 }
@@ -923,8 +922,7 @@
                     mService.scheduleAnimationLocked();
                 }
 
-                /** NOTE: This has to be called within a surface transaction. */
-                public void drawIfNeeded() {
+                public void drawIfNeeded(SurfaceControl.Transaction t) {
                     synchronized (mService.mGlobalLock) {
                         if (!mInvalidated) {
                             return;
@@ -959,9 +957,9 @@
                             canvas.drawPath(path, mPaint);
 
                             mSurface.unlockCanvasAndPost(canvas);
-                            mSurfaceControl.show();
+                            t.show(mSurfaceControl);
                         } else {
-                            mSurfaceControl.hide();
+                            t.hide(mSurfaceControl);
                         }
                     }
                 }
diff --git a/services/core/java/com/android/server/wm/AppWindowToken.java b/services/core/java/com/android/server/wm/AppWindowToken.java
index 2668628..39b507b 100644
--- a/services/core/java/com/android/server/wm/AppWindowToken.java
+++ b/services/core/java/com/android/server/wm/AppWindowToken.java
@@ -2797,7 +2797,7 @@
             layer += Z_BOOST_BASE;
         }
         if (!mNeedsAnimationBoundsLayer) {
-            leash.setLayer(layer);
+            t.setLayer(leash, layer);
         }
 
         final DisplayContent dc = getDisplayContent();
diff --git a/services/core/java/com/android/server/wm/CircularDisplayMask.java b/services/core/java/com/android/server/wm/CircularDisplayMask.java
index c1ca816..b73b481 100644
--- a/services/core/java/com/android/server/wm/CircularDisplayMask.java
+++ b/services/core/java/com/android/server/wm/CircularDisplayMask.java
@@ -56,7 +56,7 @@
     private int mMaskThickness;
 
     CircularDisplayMask(Supplier<Surface> surfaceFactory, DisplayContent dc, int zOrder,
-            int screenOffset, int maskThickness) {
+            int screenOffset, int maskThickness, SurfaceControl.Transaction t) {
         final Display display = dc.getDisplay();
         mSurface = surfaceFactory.get();
         mScreenSize = new Point();
@@ -75,10 +75,10 @@
                     .setFormat(PixelFormat.TRANSLUCENT)
                     .build();
 
-            ctrl.setLayerStack(display.getLayerStack());
-            ctrl.setLayer(zOrder);
-            ctrl.setPosition(0, 0);
-            ctrl.show();
+            t.setLayerStack(ctrl, display.getLayerStack());
+            t.setLayer(ctrl, zOrder);
+            t.setPosition(ctrl, 0, 0);
+            t.show(ctrl);
             mSurface.copyFrom(ctrl);
         } catch (OutOfResourcesException e) {
         }
@@ -91,7 +91,7 @@
         mMaskThickness = maskThickness;
     }
 
-    private void drawIfNeeded() {
+    private void drawIfNeeded(SurfaceControl.Transaction t) {
         if (!mDrawNeeded || !mVisible || mDimensionsUnequal) {
             return;
         }
@@ -108,45 +108,46 @@
             return;
         }
         switch (mRotation) {
-        case Surface.ROTATION_0:
-        case Surface.ROTATION_90:
-            // chin bottom or right
-            mSurfaceControl.setPosition(0, 0);
-            break;
-        case Surface.ROTATION_180:
-            // chin top
-            mSurfaceControl.setPosition(0, -mScreenOffset);
-            break;
-        case Surface.ROTATION_270:
-            // chin left
-            mSurfaceControl.setPosition(-mScreenOffset, 0);
-            break;
+            case Surface.ROTATION_0:
+            case Surface.ROTATION_90:
+                // chin bottom or right
+                t.setPosition(mSurfaceControl, 0, 0);
+                break;
+            case Surface.ROTATION_180:
+                // chin top
+                t.setPosition(mSurfaceControl, 0, -mScreenOffset);
+                break;
+            case Surface.ROTATION_270:
+                // chin left
+                t.setPosition(mSurfaceControl, -mScreenOffset, 0);
+                break;
         }
 
         int circleRadius = mScreenSize.x / 2;
         c.drawColor(Color.BLACK);
 
-        // The radius is reduced by mMaskThickness to provide an anti aliasing effect on the display edges.
+        // The radius is reduced by mMaskThickness to provide an anti aliasing effect on the
+        // display edges.
         c.drawCircle(circleRadius, circleRadius, circleRadius - mMaskThickness, mPaint);
         mSurface.unlockCanvasAndPost(c);
     }
 
     // Note: caller responsible for being inside
     // Surface.openTransaction() / closeTransaction()
-    public void setVisibility(boolean on) {
+    public void setVisibility(boolean on, SurfaceControl.Transaction t) {
         if (mSurfaceControl == null) {
             return;
         }
         mVisible = on;
-        drawIfNeeded();
+        drawIfNeeded(t);
         if (on) {
-            mSurfaceControl.show();
+            t.show(mSurfaceControl);
         } else {
-            mSurfaceControl.hide();
+            t.hide(mSurfaceControl);
         }
     }
 
-    void positionSurface(int dw, int dh, int rotation) {
+    void positionSurface(int dw, int dh, int rotation, SurfaceControl.Transaction t) {
         if (mLastDW == dw && mLastDH == dh && mRotation == rotation) {
             return;
         }
@@ -154,7 +155,7 @@
         mLastDH = dh;
         mDrawNeeded = true;
         mRotation = rotation;
-        drawIfNeeded();
+        drawIfNeeded(t);
     }
 
 }
diff --git a/services/core/java/com/android/server/wm/DisplayContent.java b/services/core/java/com/android/server/wm/DisplayContent.java
index 6d9a008..8108c02 100644
--- a/services/core/java/com/android/server/wm/DisplayContent.java
+++ b/services/core/java/com/android/server/wm/DisplayContent.java
@@ -332,7 +332,7 @@
 
     /**
      * For default display it contains real metrics, empty for others.
-     * @see WindowManagerService#createWatermarkInTransaction()
+     * @see WindowManagerService#createWatermark()
      */
     final DisplayMetrics mRealDisplayMetrics = new DisplayMetrics();
 
diff --git a/services/core/java/com/android/server/wm/EmulatorDisplayOverlay.java b/services/core/java/com/android/server/wm/EmulatorDisplayOverlay.java
index f64592f..2165b0e 100644
--- a/services/core/java/com/android/server/wm/EmulatorDisplayOverlay.java
+++ b/services/core/java/com/android/server/wm/EmulatorDisplayOverlay.java
@@ -50,7 +50,7 @@
     private boolean mVisible;
 
     EmulatorDisplayOverlay(Supplier<Surface> surfaceFactory, Context context, DisplayContent dc,
-            int zOrder) {
+            int zOrder, SurfaceControl.Transaction t) {
         mSurface = surfaceFactory.get();
         final Display display = dc.getDisplay();
         mScreenSize = new Point();
@@ -63,9 +63,9 @@
                     .setBufferSize(mScreenSize.x, mScreenSize.y)
                     .setFormat(PixelFormat.TRANSLUCENT)
                     .build();
-            ctrl.setLayer(zOrder);
-            ctrl.setPosition(0, 0);
-            ctrl.show();
+            t.setLayer(ctrl, zOrder);
+            t.setPosition(ctrl, 0, 0);
+            t.show(ctrl);
             mSurface.copyFrom(ctrl);
         } catch (OutOfResourcesException e) {
         }
@@ -75,7 +75,7 @@
                 com.android.internal.R.drawable.emulator_circular_window_overlay);
     }
 
-    private void drawIfNeeded() {
+    private void drawIfNeeded(SurfaceControl.Transaction t) {
         if (!mDrawNeeded || !mVisible) {
             return;
         }
@@ -92,7 +92,7 @@
             return;
         }
         c.drawColor(Color.TRANSPARENT, PorterDuff.Mode.SRC);
-        mSurfaceControl.setPosition(0, 0);
+        t.setPosition(mSurfaceControl, 0, 0);
         // Always draw the overlay with square dimensions
         int size = Math.max(mScreenSize.x, mScreenSize.y);
         mOverlay.setBounds(0, 0, size, size);
@@ -102,20 +102,20 @@
 
     // Note: caller responsible for being inside
     // Surface.openTransaction() / closeTransaction()
-    public void setVisibility(boolean on) {
+    public void setVisibility(boolean on, SurfaceControl.Transaction t) {
         if (mSurfaceControl == null) {
             return;
         }
         mVisible = on;
-        drawIfNeeded();
+        drawIfNeeded(t);
         if (on) {
-            mSurfaceControl.show();
+            t.show(mSurfaceControl);
         } else {
-            mSurfaceControl.hide();
+            t.hide(mSurfaceControl);
         }
     }
 
-    void positionSurface(int dw, int dh, int rotation) {
+    void positionSurface(int dw, int dh, int rotation, SurfaceControl.Transaction t) {
         if (mLastDW == dw && mLastDH == dh && mRotation == rotation) {
             return;
         }
@@ -123,7 +123,7 @@
         mLastDH = dh;
         mDrawNeeded = true;
         mRotation = rotation;
-        drawIfNeeded();
+        drawIfNeeded(t);
     }
 
 }
diff --git a/services/core/java/com/android/server/wm/Letterbox.java b/services/core/java/com/android/server/wm/Letterbox.java
index 1bd2493..94d010e 100644
--- a/services/core/java/com/android/server/wm/Letterbox.java
+++ b/services/core/java/com/android/server/wm/Letterbox.java
@@ -247,12 +247,12 @@
             mLayoutFrameRelative.offset(-surfaceOrigin.x, -surfaceOrigin.y);
         }
 
-        private void createSurface() {
+        private void createSurface(SurfaceControl.Transaction t) {
             mSurface = mSurfaceControlFactory.get().setName("Letterbox - " + mType)
                     .setFlags(HIDDEN).setColorLayer().build();
-            mSurface.setLayer(-1);
-            mSurface.setColor(new float[]{0, 0, 0});
-            mSurface.setColorSpaceAgnostic(true);
+            t.setLayer(mSurface, -1)
+                    .setColor(mSurface, new float[]{0, 0, 0})
+                    .setColorSpaceAgnostic(mSurface, true);
         }
 
         void attachInput(WindowState win) {
@@ -300,7 +300,7 @@
             mSurfaceFrameRelative.set(mLayoutFrameRelative);
             if (!mSurfaceFrameRelative.isEmpty()) {
                 if (mSurface == null) {
-                    createSurface();
+                    createSurface(t);
                 }
                 t.setPosition(mSurface, mSurfaceFrameRelative.left, mSurfaceFrameRelative.top);
                 t.setWindowCrop(mSurface, mSurfaceFrameRelative.width(),
diff --git a/services/core/java/com/android/server/wm/RootWindowContainer.java b/services/core/java/com/android/server/wm/RootWindowContainer.java
index 78fcb37..9079895 100644
--- a/services/core/java/com/android/server/wm/RootWindowContainer.java
+++ b/services/core/java/com/android/server/wm/RootWindowContainer.java
@@ -813,18 +813,18 @@
         final int defaultDw = defaultInfo.logicalWidth;
         final int defaultDh = defaultInfo.logicalHeight;
         if (mWmService.mWatermark != null) {
-            mWmService.mWatermark.positionSurface(defaultDw, defaultDh);
+            mWmService.mWatermark.positionSurface(defaultDw, defaultDh, mDisplayTransaction);
         }
         if (mWmService.mStrictModeFlash != null) {
-            mWmService.mStrictModeFlash.positionSurface(defaultDw, defaultDh);
+            mWmService.mStrictModeFlash.positionSurface(defaultDw, defaultDh, mDisplayTransaction);
         }
         if (mWmService.mCircularDisplayMask != null) {
             mWmService.mCircularDisplayMask.positionSurface(defaultDw, defaultDh,
-                    mWmService.getDefaultDisplayRotation());
+                    mWmService.getDefaultDisplayRotation(), mDisplayTransaction);
         }
         if (mWmService.mEmulatorDisplayOverlay != null) {
             mWmService.mEmulatorDisplayOverlay.positionSurface(defaultDw, defaultDh,
-                    mWmService.getDefaultDisplayRotation());
+                    mWmService.getDefaultDisplayRotation(), mDisplayTransaction);
         }
 
         final int count = mChildren.size();
diff --git a/services/core/java/com/android/server/wm/SeamlessRotator.java b/services/core/java/com/android/server/wm/SeamlessRotator.java
index bcd90a1..ba31818 100644
--- a/services/core/java/com/android/server/wm/SeamlessRotator.java
+++ b/services/core/java/com/android/server/wm/SeamlessRotator.java
@@ -20,9 +20,10 @@
 import static android.view.Surface.ROTATION_90;
 
 import android.graphics.Matrix;
+import android.os.IBinder;
 import android.view.DisplayInfo;
-import android.view.Surface;
 import android.view.Surface.Rotation;
+import android.view.SurfaceControl;
 import android.view.SurfaceControl.Transaction;
 
 import com.android.server.wm.utils.CoordinateTransforms;
@@ -35,7 +36,7 @@
  *
  * Works by transforming the {@link WindowState} back into the old display rotation.
  *
- * Uses {@link android.view.SurfaceControl#deferTransactionUntil(Surface, long)} instead of
+ * Uses {@link Transaction#deferTransactionUntil(SurfaceControl, IBinder, long)} instead of
  * latching on the buffer size to allow for seamless 180 degree rotations.
  */
 public class SeamlessRotator {
diff --git a/services/core/java/com/android/server/wm/StrictModeFlash.java b/services/core/java/com/android/server/wm/StrictModeFlash.java
index 9e5d9ca..f537005 100644
--- a/services/core/java/com/android/server/wm/StrictModeFlash.java
+++ b/services/core/java/com/android/server/wm/StrictModeFlash.java
@@ -39,7 +39,8 @@
     private boolean mDrawNeeded;
     private final int mThickness = 20;
 
-    StrictModeFlash(Supplier<Surface> surfaceFactory, DisplayContent dc) {
+    StrictModeFlash(Supplier<Surface> surfaceFactory, DisplayContent dc,
+            SurfaceControl.Transaction t) {
         mSurface = surfaceFactory.get();
         SurfaceControl ctrl = null;
         try {
@@ -48,9 +49,11 @@
                     .setBufferSize(1, 1)
                     .setFormat(PixelFormat.TRANSLUCENT)
                     .build();
-            ctrl.setLayer(WindowManagerService.TYPE_LAYER_MULTIPLIER * 101);  // one more than Watermark? arbitrary.
-            ctrl.setPosition(0, 0);
-            ctrl.show();
+
+            // one more than Watermark? arbitrary.
+            t.setLayer(ctrl, WindowManagerService.TYPE_LAYER_MULTIPLIER * 101);
+            t.setPosition(ctrl, 0, 0);
+            t.show(ctrl);
             mSurface.copyFrom(ctrl);
         } catch (OutOfResourcesException e) {
         }
@@ -103,25 +106,25 @@
 
     // Note: caller responsible for being inside
     // Surface.openTransaction() / closeTransaction()
-    public void setVisibility(boolean on) {
+    public void setVisibility(boolean on, SurfaceControl.Transaction t) {
         if (mSurfaceControl == null) {
             return;
         }
         drawIfNeeded();
         if (on) {
-            mSurfaceControl.show();
+            t.show(mSurfaceControl);
         } else {
-            mSurfaceControl.hide();
+            t.hide(mSurfaceControl);
         }
     }
 
-    void positionSurface(int dw, int dh) {
+    void positionSurface(int dw, int dh, SurfaceControl.Transaction t) {
         if (mLastDW == dw && mLastDH == dh) {
             return;
         }
         mLastDW = dw;
         mLastDH = dh;
-        mSurfaceControl.setBufferSize(dw, dh);
+        t.setBufferSize(mSurfaceControl, dw, dh);
         mDrawNeeded = true;
     }
 
diff --git a/services/core/java/com/android/server/wm/TaskSnapshotSurface.java b/services/core/java/com/android/server/wm/TaskSnapshotSurface.java
index d070850..172ebce 100644
--- a/services/core/java/com/android/server/wm/TaskSnapshotSurface.java
+++ b/services/core/java/com/android/server/wm/TaskSnapshotSurface.java
@@ -134,6 +134,7 @@
     private final int mStatusBarColor;
     @VisibleForTesting final SystemBarBackgroundPainter mSystemBarBackgroundPainter;
     private final int mOrientationOnCreation;
+    private final SurfaceControl.Transaction mTransaction;
 
     static TaskSnapshotSurface create(WindowManagerService service, AppWindowToken token,
             TaskSnapshot snapshot) {
@@ -252,6 +253,7 @@
                 windowPrivateFlags, sysUiVis, taskDescription, 1f);
         mStatusBarColor = taskDescription.getStatusBarColor();
         mOrientationOnCreation = currentOrientation;
+        mTransaction = mService.mTransactionFactory.get();
     }
 
     @Override
@@ -336,27 +338,23 @@
         surface.copyFrom(mChildSurfaceControl);
 
         final Rect frame;
-        SurfaceControl.openTransaction();
-        try {
-            // We can just show the surface here as it will still be hidden as the parent is
-            // still hidden.
-            mChildSurfaceControl.show();
-            if (aspectRatioMismatch) {
-                // Clip off ugly navigation bar.
-                final Rect crop = calculateSnapshotCrop();
-                frame = calculateSnapshotFrame(crop);
-                mChildSurfaceControl.setWindowCrop(crop);
-                mChildSurfaceControl.setPosition(frame.left, frame.top);
-            } else {
-                frame = null;
-            }
-
-            // Scale the mismatch dimensions to fill the task bounds
-            final float scale = 1 / mSnapshot.getScale();
-            mChildSurfaceControl.setMatrix(scale, 0, 0, scale);
-        } finally {
-            SurfaceControl.closeTransaction();
+        // We can just show the surface here as it will still be hidden as the parent is
+        // still hidden.
+        mTransaction.show(mChildSurfaceControl);
+        if (aspectRatioMismatch) {
+            // Clip off ugly navigation bar.
+            final Rect crop = calculateSnapshotCrop();
+            frame = calculateSnapshotFrame(crop);
+            mTransaction.setWindowCrop(mChildSurfaceControl, crop);
+            mTransaction.setPosition(mChildSurfaceControl, frame.left, frame.top);
+        } else {
+            frame = null;
         }
+
+        // Scale the mismatch dimensions to fill the task bounds
+        final float scale = 1 / mSnapshot.getScale();
+        mTransaction.setMatrix(mChildSurfaceControl, scale, 0, 0, scale);
+        mTransaction.apply();
         surface.attachAndQueueBufferWithColorSpace(buffer, mSnapshot.getColorSpace());
         surface.release();
 
diff --git a/services/core/java/com/android/server/wm/Watermark.java b/services/core/java/com/android/server/wm/Watermark.java
index 729cfc0..725aaa48 100644
--- a/services/core/java/com/android/server/wm/Watermark.java
+++ b/services/core/java/com/android/server/wm/Watermark.java
@@ -55,7 +55,7 @@
     private boolean mDrawNeeded;
 
     Watermark(Supplier<Surface> surfaceFactory, DisplayContent dc, DisplayMetrics dm,
-            String[] tokens) {
+            String[] tokens, SurfaceControl.Transaction t) {
         if (false) {
             Log.i(TAG_WM, "*********************** WATERMARK");
             for (int i=0; i<tokens.length; i++) {
@@ -121,21 +121,21 @@
                     .setBufferSize(1, 1)
                     .setFormat(PixelFormat.TRANSLUCENT)
                     .build();
-            ctrl.setLayerStack(mDisplay.getLayerStack());
-            ctrl.setLayer(WindowManagerService.TYPE_LAYER_MULTIPLIER*100);
-            ctrl.setPosition(0, 0);
-            ctrl.show();
+            t.setLayerStack(ctrl, mDisplay.getLayerStack())
+                    .setLayer(ctrl, WindowManagerService.TYPE_LAYER_MULTIPLIER * 100)
+                    .setPosition(ctrl, 0, 0)
+                    .show(ctrl);
             mSurface.copyFrom(ctrl);
         } catch (OutOfResourcesException e) {
         }
         mSurfaceControl = ctrl;
     }
 
-    void positionSurface(int dw, int dh) {
+    void positionSurface(int dw, int dh, SurfaceControl.Transaction t) {
         if (mLastDW != dw || mLastDH != dh) {
             mLastDW = dw;
             mLastDH = dh;
-            mSurfaceControl.setBufferSize(dw, dh);
+            t.setBufferSize(mSurfaceControl, dw, dh);
             mDrawNeeded = true;
         }
     }
diff --git a/services/core/java/com/android/server/wm/WindowAnimator.java b/services/core/java/com/android/server/wm/WindowAnimator.java
index f437b28..3a1d6e0 100644
--- a/services/core/java/com/android/server/wm/WindowAnimator.java
+++ b/services/core/java/com/android/server/wm/WindowAnimator.java
@@ -161,7 +161,8 @@
                     dc.checkAppWindowsReadyToShow();
                     orAnimating(dc.getDockedDividerController().animate(mCurrentTime));
                     if (accessibilityController != null) {
-                        accessibilityController.drawMagnifiedRegionBorderIfNeededLocked(displayId);
+                        accessibilityController.drawMagnifiedRegionBorderIfNeededLocked(displayId,
+                                mTransaction);
                     }
                 }
 
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index 1f45cfb..3c432bc 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -1271,14 +1271,7 @@
 
         // Add ourself to the Watchdog monitors.
         Watchdog.getInstance().addMonitor(this);
-
-        openSurfaceTransaction();
-        try {
-            createWatermarkInTransaction();
-        } finally {
-            closeSurfaceTransaction("createWatermarkInTransaction");
-        }
-
+        createWatermark();
         showEmulatorDisplayOverlayIfNeeded();
     }
 
@@ -3437,60 +3430,45 @@
 
     public void showCircularMask(boolean visible) {
         synchronized (mGlobalLock) {
+            if (visible) {
+                // TODO(multi-display): support multiple displays
+                if (mCircularDisplayMask == null) {
+                    int screenOffset = mContext.getResources().getInteger(
+                            com.android.internal.R.integer.config_windowOutsetBottom);
+                    int maskThickness = mContext.getResources().getDimensionPixelSize(
+                            com.android.internal.R.dimen.circular_display_mask_thickness);
 
-            if (SHOW_LIGHT_TRANSACTIONS) Slog.i(TAG_WM,
-                    ">>> OPEN TRANSACTION showCircularMask(visible=" + visible + ")");
-            openSurfaceTransaction();
-            try {
-                if (visible) {
-                    // TODO(multi-display): support multiple displays
-                    if (mCircularDisplayMask == null) {
-                        int screenOffset = mContext.getResources().getInteger(
-                                com.android.internal.R.integer.config_windowOutsetBottom);
-                        int maskThickness = mContext.getResources().getDimensionPixelSize(
-                                com.android.internal.R.dimen.circular_display_mask_thickness);
 
-                        mCircularDisplayMask = new CircularDisplayMask(mSurfaceFactory,
-                                getDefaultDisplayContentLocked(),
-                                mPolicy.getWindowLayerFromTypeLw(
-                                        WindowManager.LayoutParams.TYPE_POINTER)
-                                        * TYPE_LAYER_MULTIPLIER + 10, screenOffset, maskThickness);
+                    if (SHOW_LIGHT_TRANSACTIONS) {
+                        Slog.i(TAG_WM,
+                                ">>> showCircularMask(visible=" + visible + ")");
                     }
-                    mCircularDisplayMask.setVisibility(true);
-                } else if (mCircularDisplayMask != null) {
-                    mCircularDisplayMask.setVisibility(false);
-                    mCircularDisplayMask = null;
+                    mCircularDisplayMask = new CircularDisplayMask(mSurfaceFactory,
+                            getDefaultDisplayContentLocked(), mPolicy.getWindowLayerFromTypeLw(
+                            WindowManager.LayoutParams.TYPE_POINTER) * TYPE_LAYER_MULTIPLIER
+                            + 10, screenOffset, maskThickness, mTransaction);
                 }
-            } finally {
-                closeSurfaceTransaction("showCircularMask");
-                if (SHOW_LIGHT_TRANSACTIONS) Slog.i(TAG_WM,
-                        "<<< CLOSE TRANSACTION showCircularMask(visible=" + visible + ")");
+                mCircularDisplayMask.setVisibility(true, mTransaction);
+            } else if (mCircularDisplayMask != null) {
+                mCircularDisplayMask.setVisibility(false, mTransaction);
+                mCircularDisplayMask = null;
             }
+            mTransaction.apply();
         }
     }
 
     public void showEmulatorDisplayOverlay() {
         synchronized (mGlobalLock) {
 
-            if (SHOW_LIGHT_TRANSACTIONS) Slog.i(TAG_WM,
-                    ">>> OPEN TRANSACTION showEmulatorDisplayOverlay");
-            openSurfaceTransaction();
-            try {
-                if (mEmulatorDisplayOverlay == null) {
-                    mEmulatorDisplayOverlay = new EmulatorDisplayOverlay(
-                            mSurfaceFactory,
-                            mContext,
-                            getDefaultDisplayContentLocked(),
-                            mPolicy.getWindowLayerFromTypeLw(
-                                    WindowManager.LayoutParams.TYPE_POINTER)
-                                    * TYPE_LAYER_MULTIPLIER + 10);
-                }
-                mEmulatorDisplayOverlay.setVisibility(true);
-            } finally {
-                closeSurfaceTransaction("showEmulatorDisplayOverlay");
-                if (SHOW_LIGHT_TRANSACTIONS) Slog.i(TAG_WM,
-                        "<<< CLOSE TRANSACTION showEmulatorDisplayOverlay");
+            if (SHOW_LIGHT_TRANSACTIONS) Slog.i(TAG_WM, ">>> showEmulatorDisplayOverlay");
+            if (mEmulatorDisplayOverlay == null) {
+                mEmulatorDisplayOverlay = new EmulatorDisplayOverlay(mSurfaceFactory, mContext,
+                        getDefaultDisplayContentLocked(),
+                        mPolicy.getWindowLayerFromTypeLw(WindowManager.LayoutParams.TYPE_POINTER)
+                                * TYPE_LAYER_MULTIPLIER + 10, mTransaction);
             }
+            mEmulatorDisplayOverlay.setVisibility(true, mTransaction);
+            mTransaction.apply();
         }
     }
 
@@ -3519,23 +3497,16 @@
                 return;
             }
 
-            if (SHOW_VERBOSE_TRANSACTIONS) Slog.i(TAG_WM,
-                    ">>> OPEN TRANSACTION showStrictModeViolation");
+            if (SHOW_VERBOSE_TRANSACTIONS) Slog.i(TAG_WM, ">>> showStrictModeViolation");
             // TODO: Modify this to use the surface trace once it is not going crazy.
             // b/31532461
-            SurfaceControl.openTransaction();
-            try {
-                // TODO(multi-display): support multiple displays
-                if (mStrictModeFlash == null) {
-                    mStrictModeFlash = new StrictModeFlash(mSurfaceFactory,
-                            getDefaultDisplayContentLocked());
-                }
-                mStrictModeFlash.setVisibility(on);
-            } finally {
-                SurfaceControl.closeTransaction();
-                if (SHOW_VERBOSE_TRANSACTIONS) Slog.i(TAG_WM,
-                        "<<< CLOSE TRANSACTION showStrictModeViolation");
+            // TODO(multi-display): support multiple displays
+            if (mStrictModeFlash == null) {
+                mStrictModeFlash = new StrictModeFlash(mSurfaceFactory,
+                        getDefaultDisplayContentLocked(), mTransaction);
             }
+            mStrictModeFlash.setVisibility(on, mTransaction);
+            mTransaction.apply();
         }
     }
 
@@ -5520,7 +5491,7 @@
         return val;
     }
 
-    void createWatermarkInTransaction() {
+    void createWatermark() {
         if (mWatermark != null) {
             return;
         }
@@ -5538,8 +5509,8 @@
                     // TODO(multi-display): Show watermarks on secondary displays.
                     final DisplayContent displayContent = getDefaultDisplayContentLocked();
                     mWatermark = new Watermark(mSurfaceFactory, displayContent,
-                            displayContent.mRealDisplayMetrics,
-                            toks);
+                            displayContent.mRealDisplayMetrics, toks, mTransaction);
+                    mTransaction.apply();
                 }
             }
         } catch (FileNotFoundException e) {
diff --git a/services/core/java/com/android/server/wm/WindowStateAnimator.java b/services/core/java/com/android/server/wm/WindowStateAnimator.java
index 3dcf6ec..1328273 100644
--- a/services/core/java/com/android/server/wm/WindowStateAnimator.java
+++ b/services/core/java/com/android/server/wm/WindowStateAnimator.java
@@ -506,9 +506,8 @@
                 flags |= SurfaceControl.OPAQUE;
             }
 
-            mSurfaceController = new WindowSurfaceController(mSession.mSurfaceSession,
-                    attrs.getTitle().toString(), width, height, format, flags, this,
-                    windowType, ownerUid);
+            mSurfaceController = new WindowSurfaceController(attrs.getTitle().toString(), width,
+                    height, format, flags, this, windowType, ownerUid);
             mSurfaceController.setColorSpaceAgnostic((attrs.privateFlags
                     & WindowManager.LayoutParams.PRIVATE_FLAG_COLOR_SPACE_AGNOSTIC) != 0);
 
diff --git a/services/core/java/com/android/server/wm/WindowSurfaceController.java b/services/core/java/com/android/server/wm/WindowSurfaceController.java
index 49f27a1..7f68c48 100644
--- a/services/core/java/com/android/server/wm/WindowSurfaceController.java
+++ b/services/core/java/com/android/server/wm/WindowSurfaceController.java
@@ -37,7 +37,6 @@
 import android.util.Slog;
 import android.util.proto.ProtoOutputStream;
 import android.view.SurfaceControl;
-import android.view.SurfaceSession;
 import android.view.WindowContentFrameStats;
 
 import com.android.server.protolog.common.ProtoLog;
@@ -85,7 +84,7 @@
 
     private final SurfaceControl.Transaction mTmpTransaction;
 
-    public WindowSurfaceController(SurfaceSession s, String name, int w, int h, int format,
+    WindowSurfaceController(String name, int w, int h, int format,
             int flags, WindowStateAnimator animator, int windowType, int ownerUid) {
         mAnimator = animator;
 
diff --git a/services/tests/wmtests/src/com/android/server/wm/DimmerTests.java b/services/tests/wmtests/src/com/android/server/wm/DimmerTests.java
index a98f79c..73420a0 100644
--- a/services/tests/wmtests/src/com/android/server/wm/DimmerTests.java
+++ b/services/tests/wmtests/src/com/android/server/wm/DimmerTests.java
@@ -46,7 +46,7 @@
 
     private static class TestWindowContainer extends WindowContainer<TestWindowContainer> {
         final SurfaceControl mControl = mock(SurfaceControl.class);
-        final SurfaceControl.Transaction mTransaction = mock(SurfaceControl.Transaction.class);
+        final SurfaceControl.Transaction mTransaction = spy(StubTransaction.class);
 
         TestWindowContainer(WindowManagerService wm) {
             super(wm);
@@ -66,7 +66,7 @@
     private static class MockSurfaceBuildingContainer extends WindowContainer<TestWindowContainer> {
         final SurfaceSession mSession = new SurfaceSession();
         final SurfaceControl mHostControl = mock(SurfaceControl.class);
-        final SurfaceControl.Transaction mHostTransaction = mock(SurfaceControl.Transaction.class);
+        final SurfaceControl.Transaction mHostTransaction = spy(StubTransaction.class);
 
         MockSurfaceBuildingContainer(WindowManagerService wm) {
             super(wm);
@@ -118,7 +118,7 @@
     public void setUp() throws Exception {
         mHost = new MockSurfaceBuildingContainer(mWm);
         mSurfaceAnimatorStarter = spy(new SurfaceAnimatorStarterImpl());
-        mTransaction = mock(SurfaceControl.Transaction.class);
+        mTransaction = spy(StubTransaction.class);
         mDimmer = new Dimmer(mHost, mSurfaceAnimatorStarter);
     }
 
diff --git a/services/tests/wmtests/src/com/android/server/wm/LetterboxTest.java b/services/tests/wmtests/src/com/android/server/wm/LetterboxTest.java
index 2d0416d..15417d7 100644
--- a/services/tests/wmtests/src/com/android/server/wm/LetterboxTest.java
+++ b/services/tests/wmtests/src/com/android/server/wm/LetterboxTest.java
@@ -21,6 +21,7 @@
 import static org.mockito.Mockito.clearInvocations;
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
@@ -48,8 +49,8 @@
     @Before
     public void setUp() throws Exception {
         mSurfaces = new SurfaceControlMocker();
-        mLetterbox = new Letterbox(mSurfaces, () -> mock(SurfaceControl.Transaction.class));
-        mTransaction = mock(SurfaceControl.Transaction.class);
+        mLetterbox = new Letterbox(mSurfaces, StubTransaction::new);
+        mTransaction = spy(StubTransaction.class);
     }
 
     @Test
diff --git a/services/tests/wmtests/src/com/android/server/wm/StubTransaction.java b/services/tests/wmtests/src/com/android/server/wm/StubTransaction.java
index 2ad40f2..f5d08dc 100644
--- a/services/tests/wmtests/src/com/android/server/wm/StubTransaction.java
+++ b/services/tests/wmtests/src/com/android/server/wm/StubTransaction.java
@@ -239,4 +239,15 @@
     public SurfaceControl.Transaction remove(SurfaceControl sc) {
         return this;
     }
+
+    @Override
+    public SurfaceControl.Transaction syncInputWindows() {
+        return this;
+    }
+
+    @Override
+    public SurfaceControl.Transaction setColorSpaceAgnostic(SurfaceControl sc, boolean agnostic) {
+        return this;
+    }
+
 }
diff --git a/services/tests/wmtests/src/com/android/server/wm/WindowAnimationSpecTest.java b/services/tests/wmtests/src/com/android/server/wm/WindowAnimationSpecTest.java
index 0330de8..bfc0741 100644
--- a/services/tests/wmtests/src/com/android/server/wm/WindowAnimationSpecTest.java
+++ b/services/tests/wmtests/src/com/android/server/wm/WindowAnimationSpecTest.java
@@ -27,6 +27,7 @@
 import static org.mockito.ArgumentMatchers.argThat;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.when;
 
 import android.graphics.Point;
@@ -50,7 +51,7 @@
 @Presubmit
 public class WindowAnimationSpecTest {
     private final SurfaceControl mSurfaceControl = mock(SurfaceControl.class);
-    private final SurfaceControl.Transaction mTransaction = mock(SurfaceControl.Transaction.class);
+    private final SurfaceControl.Transaction mTransaction = spy(StubTransaction.class);
     private final Animation mAnimation = mock(Animation.class);
     private final Rect mStackBounds = new Rect(0, 0, 10, 10);
 
diff --git a/services/tests/wmtests/src/com/android/server/wm/WindowStateTests.java b/services/tests/wmtests/src/com/android/server/wm/WindowStateTests.java
index 0503d74..f0fbc20 100644
--- a/services/tests/wmtests/src/com/android/server/wm/WindowStateTests.java
+++ b/services/tests/wmtests/src/com/android/server/wm/WindowStateTests.java
@@ -452,7 +452,7 @@
     @Test
     public void testSeamlesslyRotateWindow() {
         final WindowState app = createWindow(null, TYPE_APPLICATION, "app");
-        final SurfaceControl.Transaction t = mock(SurfaceControl.Transaction.class);
+        final SurfaceControl.Transaction t = spy(StubTransaction.class);
 
         app.mHasSurface = true;
         app.mSurfaceControl = mock(SurfaceControl.class);
@@ -536,7 +536,7 @@
 
         final float[] values = new float[9];
         final Matrix matrix = new Matrix();
-        final SurfaceControl.Transaction t = mock(SurfaceControl.Transaction.class);
+        final SurfaceControl.Transaction t = spy(StubTransaction.class);
         final WindowState win1 = createWindow(null, TYPE_APPLICATION, dc, "win1");
         win1.mHasSurface = true;
         win1.mSurfaceControl = mock(SurfaceControl.class);