[LayaAir 2.0]3D粒子特效第一次卡顿最终解决方案

困扰了很久，又不想花时间看laya底层源码，但项目必须要解决，硬着头皮看了一天。
基本原理：lh预加载完成后，对材质进行检索，预编译shader。
private loadEffectComplete():void{
        var effect:Laya.Sprite3D = Laya.loader.getRes("res/effect/2/Conventional/bullet.lh");
        this.compileShader(effect);
        //===========放心使用吧=================
        var myeffect:Laya.Sprite3D = effect.clone();
    }
    private compileShader(model: any): void {
//如果是粒子特效
if (model instanceof Laya.ShuriKenParticle3D) {
            var shuriKenParticle3D: Laya.ShuriKenParticle3D = model as Laya.ShuriKenParticle3D;
            var render:Laya.ShurikenParticleRenderer = shuriKenParticle3D.particleRenderer
            var materials: Array<any> = render.materials;
            var spriteDefine:number=render._defineDatas.value;var publicDefine:number=0;var materialDefine:number=0;
for (var i: number = 0; i < materials.length; i++) {
                var mater: Laya.ShurikenParticleMaterial = materials[i] as Laya.ShurikenParticleMaterial;
             var marData:any = mater._defineDatas;
             publicDefine = (1 & (~mater._disablePublicDefineDatas.value));
             materialDefine = mater._defineDatas.value;
             if(mater._shader){
                Laya.Shader3D.compileShader(mater._shader._name,0,0,publicDefine,spriteDefine,materialDefine);
             }
             console.log(publicDefine,spriteDefine,materialDefine);
}
}
//递归获取子对象
if (model._children) {
for (var i: number = 0; i < model._children.length; i++) {
this.compileShader(model._children[i]);
}
}
}