diff --git a/cmds/installd/dexopt.cpp b/cmds/installd/dexopt.cpp
index b6f42ad..c796da6 100644
--- a/cmds/installd/dexopt.cpp
+++ b/cmds/installd/dexopt.cpp
@@ -244,7 +244,7 @@
 // The location is the profile name for primary apks or the dex path for secondary dex files.
 bool clear_primary_current_profiles(const std::string& package_name, const std::string& location) {
     bool success = true;
-    // For secondary dex files, we don't really need the user but we use it for sanity checks.
+    // For secondary dex files, we don't really need the user but we use it for validity checks.
     std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr);
     for (auto user : users) {
         success &= clear_current_profile(package_name, location, user, /*is_secondary_dex*/false);
@@ -468,7 +468,7 @@
     *reference_profile_fd = open_reference_profile(uid, package_name, location,
             /*read_write*/ true, is_secondary_dex);
 
-    // For secondary dex files, we don't really need the user but we use it for sanity checks.
+    // For secondary dex files, we don't really need the user but we use it for validity checks.
     // Note: the user owning the dex file should be the current user.
     std::vector<userid_t> users;
     if (is_secondary_dex){
diff --git a/cmds/installd/utils.cpp b/cmds/installd/utils.cpp
index c4ecd07..0f8a732 100644
--- a/cmds/installd/utils.cpp
+++ b/cmds/installd/utils.cpp
@@ -829,7 +829,7 @@
  * to top level directories (i.e. have "..").
  */
 static int validate_path(const std::string& dir, const std::string& path, int maxSubdirs) {
-    // Argument sanity checking
+    // Argument check
     if (dir.find('/') != 0 || dir.rfind('/') != dir.size() - 1
             || dir.find("..") != std::string::npos) {
         LOG(ERROR) << "Invalid directory " << dir;
diff --git a/include/android/performance_hint.h b/include/android/performance_hint.h
new file mode 100644
index 0000000..5fa47f6
--- /dev/null
+++ b/include/android/performance_hint.h
@@ -0,0 +1,164 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_NATIVE_PERFORMANCE_HINT_H
+#define ANDROID_NATIVE_PERFORMANCE_HINT_H
+
+#include <sys/cdefs.h>
+
+/******************************************************************
+ *
+ * IMPORTANT NOTICE:
+ *
+ *   This file is part of Android's set of stable system headers
+ *   exposed by the Android NDK (Native Development Kit).
+ *
+ *   Third-party source AND binary code relies on the definitions
+ *   here to be FROZEN ON ALL UPCOMING PLATFORM RELEASES.
+ *
+ *   - DO NOT MODIFY ENUMS (EXCEPT IF YOU ADD NEW 32-BIT VALUES)
+ *   - DO NOT MODIFY CONSTANTS OR FUNCTIONAL MACROS
+ *   - DO NOT CHANGE THE SIGNATURE OF FUNCTIONS IN ANY WAY
+ *   - DO NOT CHANGE THE LAYOUT OR SIZE OF STRUCTURES
+ */
+
+#include <android/api-level.h>
+#include <stdint.h>
+
+__BEGIN_DECLS
+
+struct APerformanceHintManager;
+struct APerformanceHintSession;
+
+/**
+ * An opaque type representing a handle to a performance hint manager.
+ * It must be released after use.
+ *
+ * <p>To use:<ul>
+ *    <li>Obtain the performance hint manager instance by calling
+ *        {@link APerformanceHint_getManager} function.</li>
+ *    <li>Create an {@link APerformanceHintSession} with
+ *        {@link APerformanceHint_createSession}.</li>
+ *    <li>Get the preferred update rate in nanoseconds with
+ *        {@link APerformanceHint_getPreferredUpdateRateNanos}.</li>
+ */
+typedef struct APerformanceHintManager APerformanceHintManager;
+
+/**
+ * An opaque type representing a handle to a performance hint session.
+ * A session can only be acquired from a {@link APerformanceHintManager}
+ * with {@link APerformanceHint_getPreferredUpdateRateNanos}. It must be
+ * freed with {@link APerformanceHint_closeSession} after use.
+ *
+ * A Session represents a group of threads with an inter-related workload such that hints for
+ * their performance should be considered as a unit. The threads in a given session should be
+ * long-life and not created or destroyed dynamically.
+ *
+ * <p>Each session is expected to have a periodic workload with a target duration for each
+ * cycle. The cycle duration is likely greater than the target work duration to allow other
+ * parts of the pipeline to run within the available budget. For example, a renderer thread may
+ * work at 60hz in order to produce frames at the display's frame but have a target work
+ * duration of only 6ms.</p>
+ *
+ * <p>After each cycle of work, the client is expected to use
+ * {@link APerformanceHint_reportActualWorkDuration} to report the actual time taken to
+ * complete.</p>
+ *
+ * <p>To use:<ul>
+ *    <li>Update a sessions target duration for each cycle of work
+ *        with  {@link APerformanceHint_updateTargetWorkDuration}.</li>
+ *    <li>Report the actual duration for the last cycle of work with
+ *        {@link APerformanceHint_reportActualWorkDuration}.</li>
+ *    <li>Release the session instance with
+ *        {@link APerformanceHint_closeSession}.</li></ul></p>
+ */
+typedef struct APerformanceHintSession APerformanceHintSession;
+
+/**
+  * Acquire an instance of the performance hint manager.
+  *
+  * @return manager instance on success, nullptr on failure.
+  */
+APerformanceHintManager* APerformanceHint_getManager() __INTRODUCED_IN(__ANDROID_API_T__);
+
+/**
+ * Creates a session for the given set of threads and sets their initial target work
+ * duration.
+ * @param manager The performance hint manager instance.
+ * @param threadIds The list of threads to be associated with this session. They must be part of
+ *     this app's thread group.
+ * @param size the size of threadIds.
+ * @param initialTargetWorkDurationNanos The desired duration in nanoseconds for the new session.
+ *     This must be positive.
+ * @return manager instance on success, nullptr on failure.
+ */
+APerformanceHintSession* APerformanceHint_createSession(
+        APerformanceHintManager* manager,
+        const int32_t* threadIds, size_t size,
+        int64_t initialTargetWorkDurationNanos) __INTRODUCED_IN(__ANDROID_API_T__);
+
+/**
+ * Get preferred update rate information for this device.
+ *
+ * @param manager The performance hint manager instance.
+ * @return the preferred update rate supported by device software.
+ */
+int64_t APerformanceHint_getPreferredUpdateRateNanos(
+        APerformanceHintManager* manager) __INTRODUCED_IN(__ANDROID_API_T__);
+
+/**
+ * Updates this session's target duration for each cycle of work.
+ *
+ * @param session The performance hint session instance to update.
+ * @param targetDurationNanos the new desired duration in nanoseconds. This must be positive.
+ * @return 0 on success
+ *         EINVAL if targetDurationNanos is not positive.
+ *         EPIPE if communication with the system service has failed.
+ */
+int APerformanceHint_updateTargetWorkDuration(
+        APerformanceHintSession* session,
+        int64_t targetDurationNanos) __INTRODUCED_IN(__ANDROID_API_T__);
+
+/**
+ * Reports the actual duration for the last cycle of work.
+ *
+ * <p>The system will attempt to adjust the core placement of the threads within the thread
+ * group and/or the frequency of the core on which they are run to bring the actual duration
+ * close to the target duration.</p>
+ *
+ * @param session The performance hint session instance to update.
+ * @param actualDurationNanos how long the thread group took to complete its last task in
+ *     nanoseconds. This must be positive.
+ * @return 0 on success
+ *         EINVAL if actualDurationNanos is not positive.
+ *         EPIPE if communication with the system service has failed.
+ */
+int APerformanceHint_reportActualWorkDuration(
+        APerformanceHintSession* session,
+        int64_t actualDurationNanos) __INTRODUCED_IN(__ANDROID_API_T__);
+
+/**
+ * Release the performance hint manager pointer acquired via
+ * {@link APerformanceHint_createSession}.
+ *
+ * @param session The performance hint session instance to release.
+ */
+void APerformanceHint_closeSession(
+        APerformanceHintSession* session) __INTRODUCED_IN(__ANDROID_API_T__);
+
+__END_DECLS
+
+#endif // ANDROID_NATIVE_PERFORMANCE_HINT_H
diff --git a/include/private/performance_hint_private.h b/include/private/performance_hint_private.h
index 5832bf4..f27f5f1 100644
--- a/include/private/performance_hint_private.h
+++ b/include/private/performance_hint_private.h
@@ -17,124 +17,8 @@
 #ifndef ANDROID_PRIVATE_NATIVE_PERFORMANCE_HINT_PRIVATE_H
 #define ANDROID_PRIVATE_NATIVE_PERFORMANCE_HINT_PRIVATE_H
 
-#include <stdint.h>
-
 __BEGIN_DECLS
 
-struct APerformanceHintManager;
-struct APerformanceHintSession;
-
-/**
- * An opaque type representing a handle to a performance hint manager.
- * It must be released after use.
- *
- * <p>To use:<ul>
- *    <li>Obtain the performance hint manager instance by calling
- *        {@link APerformanceHint_getManager} function.</li>
- *    <li>Create an {@link APerformanceHintSession} with
- *        {@link APerformanceHint_createSession}.</li>
- *    <li>Get the preferred update rate in nanoseconds with
- *        {@link APerformanceHint_getPreferredUpdateRateNanos}.</li>
- */
-typedef struct APerformanceHintManager APerformanceHintManager;
-
-/**
- * An opaque type representing a handle to a performance hint session.
- * A session can only be acquired from a {@link APerformanceHintManager}
- * with {@link APerformanceHint_getPreferredUpdateRateNanos}. It must be
- * freed with {@link APerformanceHint_closeSession} after use.
- *
- * A Session represents a group of threads with an inter-related workload such that hints for
- * their performance should be considered as a unit. The threads in a given session should be
- * long-life and not created or destroyed dynamically.
- *
- * <p>Each session is expected to have a periodic workload with a target duration for each
- * cycle. The cycle duration is likely greater than the target work duration to allow other
- * parts of the pipeline to run within the available budget. For example, a renderer thread may
- * work at 60hz in order to produce frames at the display's frame but have a target work
- * duration of only 6ms.</p>
- *
- * <p>After each cycle of work, the client is expected to use
- * {@link APerformanceHint_reportActualWorkDuration} to report the actual time taken to
- * complete.</p>
- *
- * <p>To use:<ul>
- *    <li>Update a sessions target duration for each cycle of work
- *        with  {@link APerformanceHint_updateTargetWorkDuration}.</li>
- *    <li>Report the actual duration for the last cycle of work with
- *        {@link APerformanceHint_reportActualWorkDuration}.</li>
- *    <li>Release the session instance with
- *        {@link APerformanceHint_closeSession}.</li></ul></p>
- */
-typedef struct APerformanceHintSession APerformanceHintSession;
-
-/**
-  * Acquire an instance of the performance hint manager.
-  *
-  * @return manager instance on success, nullptr on failure.
-  */
-APerformanceHintManager* APerformanceHint_getManager();
-
-/**
- * Creates a session for the given set of threads and sets their initial target work
- * duration.
- * @param manager The performance hint manager instance.
- * @param threadIds The list of threads to be associated with this session. They must be part of
- *     this app's thread group.
- * @param size the size of threadIds.
- * @param initialTargetWorkDurationNanos The desired duration in nanoseconds for the new session.
- *     This must be positive.
- * @return manager instance on success, nullptr on failure.
- */
-APerformanceHintSession* APerformanceHint_createSession(APerformanceHintManager* manager,
-                                                        const int32_t* threadIds, size_t size,
-                                                        int64_t initialTargetWorkDurationNanos);
-
-/**
- * Get preferred update rate information for this device.
- *
- * @param manager The performance hint manager instance.
- * @return the preferred update rate supported by device software.
- */
-int64_t APerformanceHint_getPreferredUpdateRateNanos(APerformanceHintManager* manager);
-
-/**
- * Updates this session's target duration for each cycle of work.
- *
- * @param session The performance hint session instance to update.
- * @param targetDurationNanos the new desired duration in nanoseconds. This must be positive.
- * @return 0 on success
- *         EINVAL if targetDurationNanos is not positive.
- *         EPIPE if communication with the system service has failed.
- */
-int APerformanceHint_updateTargetWorkDuration(APerformanceHintSession* session,
-                                               int64_t targetDurationNanos);
-
-/**
- * Reports the actual duration for the last cycle of work.
- *
- * <p>The system will attempt to adjust the core placement of the threads within the thread
- * group and/or the frequency of the core on which they are run to bring the actual duration
- * close to the target duration.</p>
- *
- * @param session The performance hint session instance to update.
- * @param actualDurationNanos how long the thread group took to complete its last task in
- *     nanoseconds. This must be positive.
- * @return 0 on success
- *         EINVAL if actualDurationNanos is not positive.
- *         EPIPE if communication with the system service has failed.
- */
-int APerformanceHint_reportActualWorkDuration(APerformanceHintSession* session,
-                                               int64_t actualDurationNanos);
-
-/**
- * Release the performance hint manager pointer acquired via
- * {@link APerformanceHint_createSession}.
- *
- * @param session The performance hint session instance to release.
- */
-void APerformanceHint_closeSession(APerformanceHintSession* session);
-
 /**
  * For testing only.
  */
diff --git a/libs/gui/WindowInfo.cpp b/libs/gui/WindowInfo.cpp
index 8d356aa..1c7b270 100644
--- a/libs/gui/WindowInfo.cpp
+++ b/libs/gui/WindowInfo.cpp
@@ -52,7 +52,8 @@
 }
 
 bool WindowInfo::overlaps(const WindowInfo* other) const {
-    return frameLeft < other->frameRight && frameRight > other->frameLeft &&
+    const bool nonEmpty = (frameRight - frameLeft > 0) || (frameBottom - frameTop > 0);
+    return nonEmpty && frameLeft < other->frameRight && frameRight > other->frameLeft &&
             frameTop < other->frameBottom && frameBottom > other->frameTop;
 }
 
diff --git a/libs/gui/tests/EndToEndNativeInputTest.cpp b/libs/gui/tests/EndToEndNativeInputTest.cpp
index 6f1263b..83e9858 100644
--- a/libs/gui/tests/EndToEndNativeInputTest.cpp
+++ b/libs/gui/tests/EndToEndNativeInputTest.cpp
@@ -987,6 +987,82 @@
     EXPECT_EQ(surface->consumeEvent(100), nullptr);
 }
 
+/**
+ * If a cropped layer's touchable region is replaced with a null crop, it should receive input in
+ * its own crop.
+ */
+TEST_F(InputSurfacesTest, cropped_container_replaces_touchable_region_with_null_crop) {
+    std::unique_ptr<InputSurface> parentContainer =
+            InputSurface::makeContainerInputSurface(mComposerClient, 0, 0);
+    std::unique_ptr<InputSurface> containerSurface =
+            InputSurface::makeContainerInputSurface(mComposerClient, 100, 100);
+    containerSurface->doTransaction(
+            [&](auto &t, auto &sc) { t.reparent(sc, parentContainer->mSurfaceControl); });
+    containerSurface->mInputInfo.replaceTouchableRegionWithCrop = true;
+    containerSurface->mInputInfo.touchableRegionCropHandle = nullptr;
+    parentContainer->showAt(10, 10, Rect(0, 0, 20, 20));
+    containerSurface->showAt(10, 10, Rect(0, 0, 5, 5));
+
+    // Receives events inside its own crop
+    injectTap(21, 21);
+    containerSurface->expectTap(1, 1); // Event is in layer space
+
+    // Does not receive events outside its crop
+    injectTap(26, 26);
+    EXPECT_EQ(containerSurface->consumeEvent(100), nullptr);
+}
+
+/**
+ * If an un-cropped layer's touchable region is replaced with a null crop, it should receive input
+ * in its parent's touchable region. The input events should be in the layer's coordinate space.
+ */
+TEST_F(InputSurfacesTest, uncropped_container_replaces_touchable_region_with_null_crop) {
+    std::unique_ptr<InputSurface> parentContainer =
+            InputSurface::makeContainerInputSurface(mComposerClient, 0, 0);
+    std::unique_ptr<InputSurface> containerSurface =
+            InputSurface::makeContainerInputSurface(mComposerClient, 100, 100);
+    containerSurface->doTransaction(
+            [&](auto &t, auto &sc) { t.reparent(sc, parentContainer->mSurfaceControl); });
+    containerSurface->mInputInfo.replaceTouchableRegionWithCrop = true;
+    containerSurface->mInputInfo.touchableRegionCropHandle = nullptr;
+    parentContainer->showAt(10, 10, Rect(0, 0, 20, 20));
+    containerSurface->showAt(10, 10, Rect::INVALID_RECT);
+
+    // Receives events inside parent bounds
+    injectTap(21, 21);
+    containerSurface->expectTap(1, 1); // Event is in layer space
+
+    // Does not receive events outside parent bounds
+    injectTap(31, 31);
+    EXPECT_EQ(containerSurface->consumeEvent(100), nullptr);
+}
+
+/**
+ * If a layer's touchable region is replaced with a layer crop, it should receive input in the crop
+ * layer's bounds. The input events should be in the layer's coordinate space.
+ */
+TEST_F(InputSurfacesTest, replace_touchable_region_with_crop) {
+    std::unique_ptr<InputSurface> cropLayer =
+            InputSurface::makeContainerInputSurface(mComposerClient, 0, 0);
+    cropLayer->showAt(50, 50, Rect(0, 0, 20, 20));
+
+    std::unique_ptr<InputSurface> containerSurface =
+            InputSurface::makeContainerInputSurface(mComposerClient, 100, 100);
+    containerSurface->mInputInfo.replaceTouchableRegionWithCrop = true;
+    containerSurface->mInputInfo.touchableRegionCropHandle =
+            cropLayer->mSurfaceControl->getHandle();
+    containerSurface->showAt(10, 10, Rect::INVALID_RECT);
+
+    // Receives events inside crop layer bounds
+    injectTap(51, 51);
+    containerSurface->expectTap(41, 41); // Event is in layer space
+
+    // Does not receive events outside crop layer bounds
+    injectTap(21, 21);
+    injectTap(71, 71);
+    EXPECT_EQ(containerSurface->consumeEvent(100), nullptr);
+}
+
 class MultiDisplayTests : public InputSurfacesTest {
 public:
     MultiDisplayTests() : InputSurfacesTest() { ProcessState::self()->startThreadPool(); }
diff --git a/services/inputflinger/reader/InputDevice.cpp b/services/inputflinger/reader/InputDevice.cpp
index 3e95fa9..a050963 100644
--- a/services/inputflinger/reader/InputDevice.cpp
+++ b/services/inputflinger/reader/InputDevice.cpp
@@ -309,15 +309,15 @@
                 const auto& displayPort = ports.find(inputPort);
                 if (displayPort != ports.end()) {
                     mAssociatedDisplayPort = std::make_optional(displayPort->second);
+                } else {
+                    const std::unordered_map<std::string, std::string>& displayUniqueIds =
+                            config->uniqueIdAssociations;
+                    const auto& displayUniqueId = displayUniqueIds.find(inputPort);
+                    if (displayUniqueId != displayUniqueIds.end()) {
+                        mAssociatedDisplayUniqueId = displayUniqueId->second;
+                    }
                 }
             }
-            const std::string& inputDeviceName = mIdentifier.name;
-            const std::unordered_map<std::string, std::string>& names =
-                    config->uniqueIdAssociations;
-            const auto& displayUniqueId = names.find(inputDeviceName);
-            if (displayUniqueId != names.end()) {
-                mAssociatedDisplayUniqueId = displayUniqueId->second;
-            }
 
             // If the device was explicitly disabled by the user, it would be present in the
             // "disabledDevices" list. If it is associated with a specific display, and it was not
@@ -338,7 +338,7 @@
                 if (!mAssociatedViewport) {
                     ALOGW("Input device %s should be associated with display %s but the "
                           "corresponding viewport cannot be found",
-                          inputDeviceName.c_str(), mAssociatedDisplayUniqueId->c_str());
+                          getName().c_str(), mAssociatedDisplayUniqueId->c_str());
                     enabled = false;
                 }
             }
diff --git a/services/inputflinger/reader/include/InputDevice.h b/services/inputflinger/reader/include/InputDevice.h
index 11c074a..694daa9 100644
--- a/services/inputflinger/reader/include/InputDevice.h
+++ b/services/inputflinger/reader/include/InputDevice.h
@@ -61,6 +61,9 @@
     inline std::optional<uint8_t> getAssociatedDisplayPort() const {
         return mAssociatedDisplayPort;
     }
+    inline std::optional<std::string> getAssociatedDisplayUniqueId() const {
+        return mAssociatedDisplayUniqueId;
+    }
     inline std::optional<DisplayViewport> getAssociatedViewport() const {
         return mAssociatedViewport;
     }
@@ -386,6 +389,9 @@
     inline std::optional<uint8_t> getAssociatedDisplayPort() const {
         return mDevice.getAssociatedDisplayPort();
     }
+    inline std::optional<std::string> getAssociatedDisplayUniqueId() const {
+        return mDevice.getAssociatedDisplayUniqueId();
+    }
     inline std::optional<DisplayViewport> getAssociatedViewport() const {
         return mDevice.getAssociatedViewport();
     }
diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.cpp b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
index 4772beb..f729ba9 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
@@ -565,6 +565,12 @@
             return getDeviceContext().getAssociatedViewport();
         }
 
+        const std::optional<std::string> associatedDisplayUniqueId =
+                getDeviceContext().getAssociatedDisplayUniqueId();
+        if (associatedDisplayUniqueId) {
+            return getDeviceContext().getAssociatedViewport();
+        }
+
         if (mDeviceMode == DeviceMode::POINTER) {
             std::optional<DisplayViewport> viewport =
                     mConfig.getDisplayViewportById(mConfig.defaultPointerDisplayId);
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index e2596f0..54cf15d 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -2862,7 +2862,7 @@
     // Device should be disabled because it is associated with a specific display, but the
     // corresponding display is not found.
     const std::string DISPLAY_UNIQUE_ID = "displayUniqueId";
-    mFakePolicy->addInputUniqueIdAssociation(DEVICE_NAME, DISPLAY_UNIQUE_ID);
+    mFakePolicy->addInputUniqueIdAssociation(DEVICE_LOCATION, DISPLAY_UNIQUE_ID);
     mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
                        InputReaderConfiguration::CHANGE_DISPLAY_INFO);
     ASSERT_FALSE(mDevice->isEnabled());
@@ -2887,6 +2887,21 @@
     ASSERT_FALSE(mDevice->isEnabled());
 }
 
+TEST_F(InputDeviceTest, Configure_UniqueId_CorrectlyMatches) {
+    mFakePolicy->clearViewports();
+    mDevice->addMapper<FakeInputMapper>(EVENTHUB_ID, AINPUT_SOURCE_KEYBOARD);
+    mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(), 0);
+
+    const std::string DISPLAY_UNIQUE_ID = "displayUniqueId";
+    mFakePolicy->addInputUniqueIdAssociation(DEVICE_LOCATION, DISPLAY_UNIQUE_ID);
+    mFakePolicy->addDisplayViewport(SECONDARY_DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
+                                    DISPLAY_ORIENTATION_0, /* isActive= */ true, DISPLAY_UNIQUE_ID,
+                                    NO_PORT, ViewportType::INTERNAL);
+    mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                       InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    ASSERT_EQ(DISPLAY_UNIQUE_ID, mDevice->getAssociatedDisplayUniqueId());
+}
+
 // --- InputMapperTest ---
 
 class InputMapperTest : public testing::Test {
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 7af1237..9fffd12 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -2161,25 +2161,15 @@
 }
 
 void Layer::fillInputFrameInfo(WindowInfo& info, const ui::Transform& displayTransform) {
-    // Transform layer size to screen space and inset it by surface insets.
-    // If this is a portal window, set the touchableRegion to the layerBounds.
-    Rect layerBounds = info.portalToDisplayId == ADISPLAY_ID_NONE
-            ? getInputBounds()
-            : info.touchableRegion.getBounds();
+    Rect layerBounds = getInputBounds();
     if (!layerBounds.isValid()) {
-        layerBounds = getInputBounds();
-    }
-
-    if (!layerBounds.isValid()) {
-        // If the layer bounds is empty, set the frame to empty and clear the transform
-        info.frameLeft = 0;
-        info.frameTop = 0;
-        info.frameRight = 0;
-        info.frameBottom = 0;
-        info.transform.reset();
-        info.touchableRegion = Region();
         info.flags = WindowInfo::Flag::NOT_TOUCH_MODAL | WindowInfo::Flag::NOT_FOCUSABLE;
-        return;
+        info.touchableRegion.clear();
+        // A layer could have invalid input bounds and still expect to receive touch input if it has
+        // replaceTouchableRegionWithCrop. For that case, the input transform needs to be calculated
+        // correctly to determine the coordinate space for input events. Use an empty rect so that
+        // the layer will receive input in its own layer space.
+        layerBounds = Rect::EMPTY_RECT;
     }
 
     const ui::Transform layerTransform = getInputTransform();
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 991256b..40fb946 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -959,6 +959,19 @@
     bool usingRelativeZ(LayerVector::StateSet) const;
 
     virtual ui::Transform getInputTransform() const;
+    /**
+     * Get the bounds in layer space within which this layer can receive input.
+     *
+     * These bounds are used to:
+     * - Determine the input frame for the layer to be used for occlusion detection; and
+     * - Determine the coordinate space within which the layer will receive input. The top-left of
+     *   this rect will be the origin of the coordinate space that the input events sent to the
+     *   layer will be in (prior to accounting for surface insets).
+     *
+     * The layer can still receive touch input if these bounds are invalid if
+     * "replaceTouchableRegionWithCrop" is specified. In this case, the layer will receive input
+     * in this layer's space, regardless of the specified crop layer.
+     */
     virtual Rect getInputBounds() const;
 
     // constant