cc.Layer draw do not trigger in my test demo

cocos2d-x JavaScript
#1

Does Jsb suppot draw-primitives?But TestJavascript work well.
I am confused！

by then way: I trigger draw myself, and cc.renderContext is undefinded!

#2

Use CCDrawNode to draw primitives,

cc.renderContext is html5 stuff along with all canvas related API, avoid using them in JSB

#3

Hao Wu wrote:

Use CCDrawNode to draw primitives,
>
cc.renderContext is html5 stuff along with all canvas related API, avoid using them in JSB

Can I use cc.DrawingPrimitive? cc.DrawNode has not DrawCircle.

What scene use cc.DrawingPrimitive ?