From 8e0fedbdb183bd9022f64232bb2515517c88e240 Mon Sep 17 00:00:00 2001
From: Arthur Hung <arthurhung@google.com>
Date: Thu, 10 Jun 2021 22:57:18 +0800
Subject: Update transform hint from relayout window (1/2)

The transform hint is used to prevent allocating a buffer of a different
size when a window is rotated. We return the fixed rotation transform
and pass it to BLASTBufferQueue so the producer can choose to consume
the hint and allocate the buffer with the same size.

Bug: 188893403
Bug: 177029197
Test: atest WmTests
Test: gfxbenchmark
Test: atest libsurfaceflinger_unittest SurfaceFlinger_test
Change-Id: If631984cf6b4b74ccdf19547fd6a63e759ed5732
---
 core/java/android/view/ViewRootImpl.java | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'core/java/android/view/ViewRootImpl.java')

diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index d42e0c367763..25baea51ca28 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -10353,4 +10353,8 @@ public final class ViewRootImpl implements ViewParent,
         });
         return true;
     }
+
+    int getSurfaceTransformHint() {
+        return mSurfaceControl.getTransformHint();
+    }
 }
-- 
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