克隆着色器材质three.js

Question

我遇到了另一个问题的解决方案问题，three.js webgl custom shader sharing texture with new offset ..

阅读后我得出结论我可能要使用克隆方法（）;很简单，但我确定我错过了一些东西，因为我在我的网格上得到了黑色渲染结果。

   originalM = new THREE.ShaderMaterial({
        uniforms: uniforms,
        vertexShader: document.getElementById( 'vShader' ).textContent,
        fragmentShader: document.getElementById( 'fShader' ).textContent,
        wireframe: true,
        side: THREE.FrontSide 
  }   );


  for ( j = 0; j < row; j ++ ) {
       var shader2 =  originalM.clone();
       shader2.uniforms = THREE.UniformsUtils.clone( originalM.uniforms );
       shader2.needsUpdate = true;
       shader2.uniforms.tX.value = 0.20 * t;
       shader2.uniforms.tY.value = 0.20 * j;
       for ( i = 0; i < geometry.length; i ++ ) {
             var mesh = new THREE.Mesh( geometry[ i ][ 0 ], shader2);
             group.add(mesh);
       }

  }