js使用背景移动，会抖

Cocos2d-x JavaScript
#1

var bg1 = this._bgList;
var bg2 = this._bgList;

    var moveto1 = new cc.MoveTo(10,cc.p(g_winsize.width/2,-bg1.getContentSize().height/2));
    var moveto2 = new cc.MoveTo(10,cc.p(g_winsize.width/2,bg2.getContentSize().height/2));

    var t1 = cc.targetedAction(bg1, moveto1);
    var t2 = cc.targetedAction(bg2, moveto2);

    var callFuncbg1 = cc.callFunc(function () {
        bg1.setPosition(cc.p(g_winsize.width/2,bg1.getContentSize().height/2));
    }, this);

    var callFuncbg2 = cc.callFunc(function () {
        bg2.setPosition(cc.p(g_winsize.width/2,bg2.getContentSize().height * 1.5));
    }, this);

    var seq1 = cc.sequence(t1, callFuncbg1).repeatForever();
    var seq2 = cc.sequence(t2, callFuncbg2).repeatForever();

    this.runAction(seq1);
    this.runAction(seq2);

原来直接在update里面写，每次移动dt*固定距离，这样的方式也会抖

#2

不光js，我以前用－x也会抖动，不仅抖动，小图像图像还会有点花，就像ps里使用你迳向模糊一样