3.0alpha ClippingNode can not work on IOS5

cocos2d-x C++
#1

I use the cocos2d-x with 3.0alpha1 , the ClippingNode works ok on IOS6 and IOS7, but on the IOS5, it’s cant not work.

How to solve this?

The test device is ipad1 and ipad2

#2

anyone can help me