bytev-charts-beta/lib/plugin/three.js/examples/js/postprocessing/ShaderPass.js

基于echarts和JavaScript及ES6封装的一个可以直接调用的图表组件库，内置主题设计，简单快捷，且支持用户自定义配置； npm 安装方式: npm install bytev-charts 若启动提示还需额外install插件,则运行 npm install @babel/runtime-corejs2 即可;

import _Object$assign from "@babel/runtime-corejs2/core-js/object/assign";
import _Object$create from "@babel/runtime-corejs2/core-js/object/create";
console.warn("THREE.ShaderPass: As part of the transition to ES6 Modules, the files in 'examples/js' were deprecated in May 2020 (r117) and will be deleted in December 2020 (r124). You can find more information about developing using ES6 Modules in https://threejs.org/docs/#manual/en/introduction/Installation.");

THREE.ShaderPass = function (shader, textureID) {
  THREE.Pass.call(this);
  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.Pass.FullScreenQuad(this.material);
};

THREE.ShaderPass.prototype = _Object$assign(_Object$create(THREE.Pass.prototype), {
  constructor: THREE.ShaderPass,
  render: function 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);
    }
  }
});