commit 261725fdb2962271c222a049fcdf57bbdc8363c7
author Chris Craik <ccraik@google.com> Mon Feb 29 12:52:33 2016 -0800
committer Chris Craik <ccraik@google.com> Mon Feb 29 13:10:25 2016 -0800
tree 09f05cac5f998703e0766dc62d7f033b21b947d9
parent eefb17ac61698e1b1fe9ed9e6e4d3695d3100053

Fix matrix mapping of negative rects

bug:27381362

Also rejects ops with empty clip at record time, and short circuits clip
intersection, when one is empty.

Change-Id: I842612da14ad8fd9f1ba5e9e4fd027ba4e08d365

libs/hwui/Matrix.cpp

diff --git a/libs/hwui/Matrix.cpp b/libs/hwui/Matrix.cpp
index 73ebd1304..deab956 100644
--- a/libs/hwui/Matrix.cpp
+++ b/libs/hwui/Matrix.cpp
@@ -438,7 +438,7 @@
 }
 
 void Matrix4::mapRect(Rect& r) const {
-    if (isIdentity()) return;
+    if (isIdentity() || r.isEmpty()) return;
 
     if (isSimple()) {
         MUL_ADD_STORE(r.left, data[kScaleX], data[kTranslateX]);