WXXR/miniprogram/components/template/xr-template-removeBlack/index.wxml

<xr-scene id="xr-scene" bind:ready="handleReady">
  <xr-assets bind:progress="handleAssetsProgress" bind:loaded="handleAssetsLoaded">
    <xr-asset-load
      type="video-texture" asset-id="test2"
      src="https://h5-project.oss-cn-shenzhen.aliyuncs.com/XR/test2.mp4" options="autoPlay:true,loop:true"
    />
    <xr-asset-material asset-id="removeBlack-mat" effect="removeBlack" />
  </xr-assets>
  <xr-node>
    <xr-node node-id="camera-target" position="0 0 0"></xr-node>
    <xr-node wx:if="{{loaded}}">
      <xr-mesh node-id="floor-plane" position="0 -1 0" rotation="0 0 0" scale="10 1 10" geometry="plane"
        uniforms="u_baseColorFactor:1 1 1 1"
      ></xr-mesh>
      <xr-mesh node-id="video-item" position="0 0 0" rotation="90 0 0" scale="2 2 2" geometry="plane"
        material="removeBlack-mat"
        uniforms="u_videoMap: video-test2"
        states="renderQueue:2500"
      ></xr-mesh>
    </xr-node>
    <xr-camera
      id="camera" node-id="camera" position="2 2 4" clear-color="0.925 0.925 0.925 1"
      target="camera-target"
      camera-orbit-control=""
    ></xr-camera>
  </xr-node>
  <xr-node node-id="lights">
    <xr-light type="ambient" color="1 1 1" intensity="1" />
    <xr-light type="directional" rotation="40 170 0" color="1 1 1" intensity="3" cast-shadow/>
  </xr-node>
</xr-scene>