70 lines
2.1 KiB
JavaScript
70 lines
2.1 KiB
JavaScript
/**
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* @author alteredq / http://alteredqualia.com/
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* @author mr.doob / http://mrdoob.com/
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*/
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var Detector = {
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canvas: !!window.CanvasRenderingContext2D,
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webgl: (function () {
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try {
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var canvas = document.createElement("canvas");
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return !!(
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window.WebGLRenderingContext &&
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(canvas.getContext("webgl") || canvas.getContext("experimental-webgl"))
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);
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} catch (e) {
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return false;
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}
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})(),
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workers: !!window.Worker,
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fileapi: window.File && window.FileReader && window.FileList && window.Blob,
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getWebGLErrorMessage: function () {
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var element = document.createElement("div");
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element.id = "webgl-error-message";
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element.style.fontFamily = "monospace";
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element.style.fontSize = "13px";
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element.style.fontWeight = "normal";
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element.style.textAlign = "center";
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element.style.background = "#fff";
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element.style.color = "#000";
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element.style.padding = "1.5em";
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element.style.width = "400px";
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element.style.margin = "5em auto 0";
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if (!this.webgl) {
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element.innerHTML = window.WebGLRenderingContext
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? [
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'Your graphics card does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation" style="color:#000">WebGL</a>.<br />',
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'Find out how to get it <a href="http://get.webgl.org/" style="color:#000">here</a>.',
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].join("\n")
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: [
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'Your browser does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation" style="color:#000">WebGL</a>.<br/>',
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'Find out how to get it <a href="http://get.webgl.org/" style="color:#000">here</a>.',
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].join("\n");
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}
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return element;
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},
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addGetWebGLMessage: function (parameters) {
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var parent, id, element;
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parameters = parameters || {};
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parent =
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parameters.parent !== undefined ? parameters.parent : document.body;
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id = parameters.id !== undefined ? parameters.id : "oldie";
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element = Detector.getWebGLErrorMessage();
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element.id = id;
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parent.appendChild(element);
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},
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};
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// browserify support
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if (typeof module === "object") {
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module.exports = Detector;
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}
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