Function createBrowserContext

docs/app/js/sanddance-app.js:60404–60423

(canvas, options)

    if (ext && "width" in options && "height" in options) ext.resize(options.width, options.height);
}
function createBrowserContext(canvas, options) {
    var onError = options.onError;
    var onCreateError = function onCreateError(error) {
        return onError("WebGL context: ".concat(error.statusMessage || "error"));
    };
    canvas.addEventListener("webglcontextcreationerror", onCreateError, false);
    var _options$webgl = options.webgl1, webgl1 = _options$webgl === void 0 ? true : _options$webgl, _options$webgl2 = options.webgl2, webgl2 = _options$webgl2 === void 0 ? true : _options$webgl2;
    var gl = null;
    if (webgl2) {
        gl = gl || canvas.getContext("webgl2", options);
        gl = gl || canvas.getContext("experimental-webgl2", options);
    }
    if (webgl1) {
        gl = gl || canvas.getContext("webgl", options);
        gl = gl || canvas.getContext("experimental-webgl", options);
    }
    canvas.removeEventListener("webglcontextcreationerror", onCreateError, false);
    if (!gl) return onError("Failed to create ".concat(webgl2 && !webgl1 ? "WebGL2" : "WebGL", " context"));
    return gl;
}
function getCanvas(_ref) {
    var canvas = _ref.canvas, _ref$width = _ref.width, width = _ref$width === void 0 ? 800 : _ref$width, _ref$height = _ref.height, height = _ref$height === void 0 ? 600 : _ref$height, onError = _ref.onError;
    var targetCanvas;