three.js发光材料图

我目前正在试验一下three.js,我想使用一个发射性地图.我试过将纹理加载到phong材质的自发光属性中,但不幸的是它不能像那样工作.这是我的代码:

var params = {
    emissive: THREE.ImageUtils.loadTexture( emissive ),
    shininess: shininess,
    map: THREE.ImageUtils.loadTexture( map ),
    normalMap: THREE.ImageUtils.loadTexture( normalMap ),
    normalScale: new THREE.Vector2(0,-1),
    envMap: this.reflectionCube,
    combine: THREE.MixOperation,
    reflectivity: 0.05
};
var material = new THREE.MeshPhongMaterial(params);