Add TextureView support to new renderer/reorderer

bug:22480459

Change-Id: I2e4c0bc6b904706132f3f5087ededc9cac9b40fb
diff --git a/libs/hwui/Matrix.h b/libs/hwui/Matrix.h
index c017638..1c25f26 100644
--- a/libs/hwui/Matrix.h
+++ b/libs/hwui/Matrix.h
@@ -139,9 +139,11 @@
     }
 
     void multiply(const Matrix4& v) {
-        Matrix4 u;
-        u.loadMultiply(*this, v);
-        *this = u;
+        if (!v.isIdentity()) {
+            Matrix4 u;
+            u.loadMultiply(*this, v);
+            *this = u;
+        }
     }
 
     void multiply(float v);