Babylon.js/Viewer/src/loader/plugins/applyMaterialConfig.ts

import { ViewerModel } from '../../model/viewerModel';
import { ILoaderPlugin } from './loaderPlugin';
import { ISceneLoaderPlugin, ISceneLoaderPluginAsync } from 'babylonjs/Loading/sceneLoader';
import { Material } from 'babylonjs/Materials/material';

/**
 * Force-apply material configuration right after a material was loaded.
 */
export class ApplyMaterialConfigPlugin implements ILoaderPlugin {

    private _model: ViewerModel;

    public onInit(loader: ISceneLoaderPlugin | ISceneLoaderPluginAsync, model: ViewerModel) {
        this._model = model;
    }

    public onMaterialLoaded(material: Material) {
        this._model && this._model._applyModelMaterialConfiguration(material);
    }
}