ios下图片偶尔出现模糊问题，过会儿重启侯又恢复正常

Cocos2d-x
#1

`代码如下，求解
bool AppDelegate::applicationDidFinishLaunching() {
auto director = Director::getInstance();
auto glview = director->getOpenGLView();
if (!glview) {
glview = GLViewImpl::createWithRect(“EwGame”, Rect(0, 0, 960, 540));
director->setOpenGLView(glview);
}

director->setContentScaleFactor(1.0f);
glview->setDesignResolutionSize(1280, 720, ResolutionPolicy::FIXED_WIDTH);

    director->setAnimationInterval(1.0f / 60);

auto scene = CLoginScene::createScene();
director->runWithScene(scene);

}`