//创建动态环境贴图
this.renderer.renderTarget
const dynamicEnvMapMaterial = new THREE.MeshPhongMaterial({
envMap: this.cubeRenderTarget.texture
})
//创建接受动态环境贴图的球体
const sphereGeometry = new THREE.SphereGeometry(10, 15, 15)
this.sphere = new THREE.Mesh(sphereGeometry, dynamicEnvMapMaterial)
this.scene.add(this.sphere)