Fix input when hardware renderer drawing is disabled.

When drawing is disabled the window's layer won't have a valid buffer. This
causes surfaceflinger to set the window's touchableRegion to zero.
This commit sets a window crop when drawing is disabled, so surfaceflinger
set touchableregion from crop instead of buffer.
And it modifies LetterboxUiController to not reset the crop.

Test: cts and perf tests as documented in go/android-slimulator-dev-env
Bug: 229870984
(cherry picked from commit 32dfc9838243cb1a20f2262864fb884b536eb58e)
Merged-In: I4d6ca513c3daf5818ded03eae00e551fc319ad69
Change-Id: Ic8e1b17af825951505d448509530edf3ea81af5b

1 files changed, 7 insertions, 0 deletions

diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index ec6b4acd6aff..96e910c8305a 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -8152,6 +8152,7 @@ public final class ViewRootImpl implements ViewParent,
                     mLastSyncSeqId, mTmpFrames, mPendingMergedConfiguration, mSurfaceControl,
                     mTempInsets, mTempControls, mRelayoutBundle);
             mRelayoutRequested = true;
+
             final int maybeSyncSeqId = mRelayoutBundle.getInt("seqid");
             if (maybeSyncSeqId > 0) {
                 mSyncSeqId = maybeSyncSeqId;
@@ -8191,6 +8192,12 @@ public final class ViewRootImpl implements ViewParent,
             }
         }
 
+        if (mSurfaceControl.isValid() && !HardwareRenderer.isDrawingEnabled()) {
+            // When drawing is disabled the window layer won't have a valid buffer.
+            // Set a window crop so input can get delivered to the window.
+            mTransaction.setWindowCrop(mSurfaceControl, mSurfaceSize.x, mSurfaceSize.y).apply();
+        }
+
         mLastTransformHint = transformHint;
       
         mSurfaceControl.setTransformHint(transformHint);