From 31cd64e36244f56920ccb139ecda619cf6427167 Mon Sep 17 00:00:00 2001
From: TankorSmash <tankorsmash+github@gmail.com>
Date: Mon, 22 Jul 2019 20:56:26 -0400
Subject: [PATCH] Small performance boost in using Mat4::operator*= instead of
 operator*

This avoids creating a new temporary Mat4 transform in operator* https://github.com/cocos2d/cocos2d-x/blob/v3/cocos/math/Mat4.inl#L60
---
 cocos/2d/CCNode.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cocos/2d/CCNode.cpp b/cocos/2d/CCNode.cpp
index 8aea3820a4ad..11cceca7745a 100644
--- a/cocos/2d/CCNode.cpp
+++ b/cocos/2d/CCNode.cpp
@@ -1686,7 +1686,7 @@ Mat4 Node::getNodeToParentTransform(Node* ancestor) const
 
     for (Node *p = _parent;  p != nullptr && p != ancestor ; p = p->getParent())
     {
-        t = p->getNodeToParentTransform() * t;
+        t *= p->getNodeToParentTransform();
     }
 
     return t;