Remove double display rotation for touchable region crop

inputBoundsInDisplaySpace is already in display space so remove the
second call to transform the rect by the display transform.

This causes a bug if the layer is using layer crop for touchable region
and the display is rotated since the bounds will get double transformed,
causing the touchable region to be offscreen.

Bug: 312984511
Test: LayerSnapshotTest#CanCropTouchableRegionWithDisplayTransform
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:1ba381e89fe7dfa20b0c8c1a880af59e2698925a)
Merged-In: I7d3eb9d5f129988573907658795e3a4349a5ece9
Change-Id: I7d3eb9d5f129988573907658795e3a4349a5ece9

2 files changed, 19 insertions, 2 deletions

diff --git a/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp b/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp
index ad5e42be37..bb32afa991 100644
--- a/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp
+++ b/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp
@@ -1217,8 +1217,8 @@ void LayerSnapshotBuilder::updateTouchableRegionCrop(const Args& args) {
             Rect inputBoundsInDisplaySpace =
                     getInputBoundsInDisplaySpace(*cropLayerSnapshot, inputBounds,
                                                  displayInfo.transform);
-            snapshot->inputInfo.touchableRegion = snapshot->inputInfo.touchableRegion.intersect(
-                    displayInfo.transform.transform(inputBoundsInDisplaySpace));
+            snapshot->inputInfo.touchableRegion =
+                    snapshot->inputInfo.touchableRegion.intersect(inputBoundsInDisplaySpace);
         }
 
         // If the layer is a clone, we need to crop the input region to cloned root to prevent
diff --git a/services/surfaceflinger/tests/unittests/LayerSnapshotTest.cpp b/services/surfaceflinger/tests/unittests/LayerSnapshotTest.cpp
index 50cd784725..f7492c32af 100644
--- a/services/surfaceflinger/tests/unittests/LayerSnapshotTest.cpp
+++ b/services/surfaceflinger/tests/unittests/LayerSnapshotTest.cpp
@@ -354,6 +354,23 @@ TEST_F(LayerSnapshotTest, CanCropTouchableRegion) {
     EXPECT_EQ(getSnapshot({.id = 111})->inputInfo.touchableRegion.bounds(), modifiedTouchCrop);
 }
 
+TEST_F(LayerSnapshotTest, CanCropTouchableRegionWithDisplayTransform) {
+    DisplayInfo displayInfo;
+    displayInfo.transform = ui::Transform(ui::Transform::RotationFlags::ROT_90, 1000, 1000);
+    mFrontEndDisplayInfos.emplace_or_replace(ui::LayerStack::fromValue(1), displayInfo);
+
+    Rect touchCrop{300, 300, 400, 500};
+    createRootLayer(3);
+    setCrop(3, touchCrop);
+    setLayerStack(3, 1);
+    Region touch{Rect{0, 0, 1000, 1000}};
+    setTouchableRegionCrop(3, touch, /*touchCropId=*/3, /*replaceTouchableRegionWithCrop=*/false);
+
+    UPDATE_AND_VERIFY(mSnapshotBuilder, {1, 11, 111, 12, 121, 122, 1221, 13, 2, 3});
+    Rect rotatedCrop = {500, 300, 700, 400};
+    EXPECT_EQ(getSnapshot({.id = 3})->inputInfo.touchableRegion.bounds(), rotatedCrop);
+}
+
 TEST_F(LayerSnapshotTest, blurUpdatesWhenAlphaChanges) {
     int blurRadius = 42;
     setBackgroundBlurRadius(1221, static_cast<uint32_t>(blurRadius));