(function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(["exports"], factory);
  } else if (typeof exports !== "undefined") {
    factory(exports);
  } else {
    var mod = {
      exports: {}
    };
    factory(mod.exports);
    global.WebGL = mod.exports;
  }
})(typeof globalThis !== "undefined" ? globalThis : typeof self !== "undefined" ? self : this, function (_exports) {
  "use strict";

  Object.defineProperty(_exports, "__esModule", {
    value: true
  });
  _exports.WEBGL = void 0;

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

  function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }

  var WEBGL = /*#__PURE__*/function () {
    function WEBGL() {
      _classCallCheck(this, WEBGL);
    }

    _createClass(WEBGL, null, [{
      key: "isWebGLAvailable",
      value: function isWebGLAvailable() {
        try {
          var canvas = document.createElement('canvas');
          return !!(window.WebGLRenderingContext && (canvas.getContext('webgl') || canvas.getContext('experimental-webgl')));
        } catch (e) {
          return false;
        }
      }
    }, {
      key: "isWebGL2Available",
      value: function isWebGL2Available() {
        try {
          var canvas = document.createElement('canvas');
          return !!(window.WebGL2RenderingContext && canvas.getContext('webgl2'));
        } catch (e) {
          return false;
        }
      }
    }, {
      key: "getWebGLErrorMessage",
      value: function getWebGLErrorMessage() {
        return this.getErrorMessage(1);
      }
    }, {
      key: "getWebGL2ErrorMessage",
      value: function getWebGL2ErrorMessage() {
        return this.getErrorMessage(2);
      }
    }, {
      key: "getErrorMessage",
      value: function getErrorMessage(version) {
        var names = {
          1: 'WebGL',
          2: 'WebGL 2'
        };
        var contexts = {
          1: window.WebGLRenderingContext,
          2: window.WebGL2RenderingContext
        };
        var message = 'Your $0 does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation" style="color:#000">$1</a>';
        var element = document.createElement('div');
        element.id = 'webglmessage';
        element.style.fontFamily = 'monospace';
        element.style.fontSize = '13px';
        element.style.fontWeight = 'normal';
        element.style.textAlign = 'center';
        element.style.background = '#fff';
        element.style.color = '#000';
        element.style.padding = '1.5em';
        element.style.width = '400px';
        element.style.margin = '5em auto 0';

        if (contexts[version]) {
          message = message.replace('$0', 'graphics card');
        } else {
          message = message.replace('$0', 'browser');
        }

        message = message.replace('$1', names[version]);
        element.innerHTML = message;
        return element;
      }
    }]);

    return WEBGL;
  }();

  _exports.WEBGL = WEBGL;
});