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js/threejs/Detector.js
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2016/09/22 - Copy...
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/**
* @author alteredq / http://alteredqualia.com/
* @author mr.doob / http://mrdoob.com/
*/
var Detector = {
canvas: !! window.CanvasRenderingContext2D,
webgl: ( function () {
try {
var canvas = document.createElement( 'canvas' ); return !! ( window.WebGLRenderingContext && ( canvas.getContext( 'webgl' ) || canvas.getContext( 'experimental-webgl' ) ) );
} catch ( e ) {
return false;
}
} )(),
workers: !! window.Worker,
fileapi: window.File && window.FileReader && window.FileList && window.Blob,
getWebGLErrorMessage: function () {
var element = document.createElement( 'div' );
element.id = 'webgl-error-message';
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 ( ! this.webgl ) {
element.innerHTML = window.WebGLRenderingContext ? [
'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 />',
'Find out how to get it <a href="http://get.webgl.org/" style="color:#000">here</a>.'
].join( '
' ) : [
'Your browser does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation" style="color:#000">WebGL</a>.<br/>',
'Find out how to get it <a href="http://get.webgl.org/" style="color:#000">here</a>.'
].join( '
' );
}
return element;
},
addGetWebGLMessage: function ( parameters ) {
var parent, id, element;
parameters = parameters || {};
parent = parameters.parent !== undefined ? parameters.parent : document.body;
id = parameters.id !== undefined ? parameters.id : 'oldie';
element = Detector.getWebGLErrorMessage();
element.id = id;
parent.appendChild( element );
}
};
// browserify support
if ( typeof module === 'object' ) {
module.exports = Detector;
}
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