Mercurial > hg-public > scubatools / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/Detector.js	Thu Apr 06 15:03:40 2017 +0200
@@ -0,0 +1,78 @@
+/**
+ * @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( '\n' ) : [
+				'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( '\n' );
+
+		}
+
+		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;
+
+}