kepler.gl/src/deckgl-layers/layer-utils/shader-utils.js

kepler.gl is a webgl based application to visualize large scale location data in the browser

// Copyright (c) 2018 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

import {console as Console} from 'global/window';

/*
 * Amendment to default layer vertex shader
 * @param {string} vs
 * @param {string} type
 * @param {string} originalText
 * @param {string} testToReplace
 * @return {string} output shader
 *
 */
export function editShader(vs, type, originalText, testToReplace) {

  if (!vs.includes(originalText)) {
    Console.warn(`Cannot edit ${type} layer shader`);
    return vs;
  }

  return vs.replace(originalText, testToReplace);
}