WXDemo/miniprogram/pages/gltf/scene-gltf-light-loading/index.wxml

<xr-demo-viewer
  title="多光源glTF案例"
  intro="组件和页面通信实现资源加载时覆盖加载界面，以及多个进行动画光源(红色spotLight、白色点光源、白色平行光)，于glTF光照测试场景中的渲染效果。"
  code="{{xmlCode}}"
>
  <xr-gltf-light-loading
    disable-scroll
    id="main-frame"
    width="{{renderWidth}}"
    height="{{renderHeight}}"
    style="width:{{width}}px;height:{{height}}px;top:{{top}}px;left:{{left}}px;display:block;"
    loaded="{{loaded}}"
    bind:assetsProgress="handleProgress"
    bind:assetsLoaded="handleLoaded"
  />

  <view wx:if="{{!loaded}}" style="position: absolute;display: flex; justify-content: center; align-items: center; left: 0;top: 0;width: {{width}}px;height: {{height}}px;background-color: #6aa; text-align: center;line-height: 24px;">
    <text style="color: white;font-size: 18px;">{{progressInfo}}</text>
  </view>
</xr-demo-viewer>