(function () {
  class ShaderPass extends THREE.Pass {
    constructor(shader, textureID) {
      super();
      this.textureID = textureID !== undefined ? textureID : "tDiffuse";

      if (shader instanceof THREE.ShaderMaterial) {
        this.uniforms = shader.uniforms;
        this.material = shader;
      } else if (shader) {
        this.uniforms = THREE.UniformsUtils.clone(shader.uniforms);
        this.material = new THREE.ShaderMaterial({
          defines: Object.assign({}, shader.defines),
          uniforms: this.uniforms,
          vertexShader: shader.vertexShader,
          fragmentShader: shader.fragmentShader
        });
      }

      this.fsQuad = new THREE.FullScreenQuad(this.material);
    }

    render(
      renderer,
      writeBuffer,
      readBuffer
      /*, deltaTime, maskActive */
    ) {
      if (this.uniforms[this.textureID]) {
        this.uniforms[this.textureID].value = readBuffer.texture;
      }

      this.fsQuad.material = this.material;

      if (this.renderToScreen) {
        renderer.setRenderTarget(null);
        this.fsQuad.render(renderer);
      } else {
        renderer.setRenderTarget(writeBuffer); // TODO: Avoid using autoClear properties, see https://github.com/mrdoob/three.js/pull/15571#issuecomment-465669600

        if (this.clear)
          renderer.clear(
            renderer.autoClearColor,
            renderer.autoClearDepth,
            renderer.autoClearStencil
          );
        this.fsQuad.render(renderer);
      }
    }
  }

  THREE.ShaderPass = ShaderPass;
})();