[LayaAirIDE 2.0]BloomEffect 没有效果啊

帮忙看看 为什么没有效果啊
let camera : Laya.Camera = this.owner.getChildByName("Main Camera") as Laya.Camera ;let postProcess:Laya.PostProcess = new Laya.PostProcess;
let bloom:Laya.BloomEffect = new Laya.BloomEffect();
// bloom.color = Laya.Color.RED;
bloom.intensity = 0.5;
bloom.clamp = 0.5;
bloom.fastMode = false;
bloom.diffusion = 10
bloom.anamorphicRatio = 10
bloom.dirtIntensity = 10
 
postProcess.addEffect(bloom);
camera.enableRender = true;
camera.enableHDR = true;
camera.postProcess = postProcess;
console.log(postProcess);