silphius/app/react/components/pixi/extensions.js

import {ExtensionType} from '@pixi/core';
import {Stage as LayerStage} from '@pixi/layers';

import {
  AmbientLight,
  deferredLighting,
} from './lights.js';

export const ApplicationStageLayers = {
  type: ExtensionType.Application,
  priority: 100,
  ref: {
    destroy: function() {},
    init: function() {
      this.stage = new LayerStage();
    },
  },
};

export const ApplicationStageLights = {
  type: ExtensionType.Application,
  ref: {
    destroy: function() {},
    init: function() {
      const {stage} = this;
      deferredLighting.addToStage(stage);
      // const ambientLight = new AmbientLight(0x2244cc, 0.25);
      const ambientLight = new AmbientLight(0xffffff, 1);
      stage.addChild(ambientLight);
    },
  },
};