[cocos2d-x_2.1.3]HelloWorld

AppDelegate.cpp

bool AppDelegate::applicationDidFinishLaunching() {
    // initialize director
    CCDirector* pDirector = CCDirector::sharedDirector();
    CCEGLView* pEGLView = CCEGLView::sharedOpenGLView();

    ...

}

将屏幕坐标转为OpenGL坐标