Three.js MaskPass with Glitch Pass

Question

嘿我试图将MaskPass示例与来自threejs.org/examples的GlitchPass示例结合起来但由于某种原因添加renderPass会破坏MaskPass。任何人都可以解释为什么会这样吗？

代码：                 `renderer = new THREE.WebGLRenderer（{antialias：false}）;                 renderer.setClearColor（0xe0e0e0）;                 renderer.setPixelRatio（window.devicePixelRatio）;                 renderer.setSize（window.innerWidth，window.innerHeight）;                 renderer.autoClear = false;                 document.body.appendChild（renderer.domElement）;

            //

            var clearPass = new THREE.ClearPass();

            var clearMaskPass = new THREE.ClearMaskPass();

            var maskPass1 = new THREE.MaskPass( scene1, camera );
            var maskPass2 = new THREE.MaskPass( scene2, camera );

            texture1 = new THREE.Texture(videoImage);
            texture2 = new THREE.Texture(videoImage);
            texture1.minFilter = THREE.LinearFilter;
            texture1.magFilter = THREE.LinearFilter;
            texture2.minFilter = THREE.LinearFilter;
            texture2.magFilter = THREE.LinearFilter;

            var texturePass1 = new THREE.TexturePass( texture1 );
            var texturePass2 = new THREE.TexturePass( texture2 );

            var outputPass = new THREE.ShaderPass( THREE.CopyShader );
            outputPass.renderToScreen = true;

            var parameters = {
                minFilter: THREE.LinearFilter,
                magFilter: THREE.LinearFilter,
                format: THREE.RGBFormat,
                stencilBuffer: true
            };

            var renderTarget = new THREE.WebGLRenderTarget( window.innerWidth, window.innerHeight, parameters );

            composer = new THREE.EffectComposer( renderer, renderTarget, 1 );

            composer.addPass( clearPass );
            composer.addPass( maskPass1 );
            composer.addPass( texturePass1 );
            composer.addPass( clearMaskPass );
            composer.addPass( maskPass2 );
            composer.addPass( texturePass2 );
            composer.addPass( clearMaskPass );
            composer.addPass( outputPass );
            // composer.addPass( new THREE.RenderPass( scene1, camera ) );
            // glitchPass = new THREE.GlitchPass();
            // glitchPass.renderToScreen = false;
            // composer.addPass( glitchPass );`