WebVR: XR to VR. Handle white scenes.

examples/js/vr/WebVR.js

@@ -44,7 +44,7 @@ var WEBVR = {
 				session.addEventListener( 'end', onSessionEnded );
 
 				renderer.vr.setSession( session, options );
-				button.textContent = 'EXIT XR';
+				button.textContent = 'EXIT VR';
 
 				currentSession = session;
 
@@ -55,7 +55,7 @@ var WEBVR = {
 				currentSession.removeEventListener( 'end', onSessionEnded );
 
 				renderer.vr.setSession( null );
-				button.textContent = 'ENTER XR';
+				button.textContent = 'ENTER VR';
 
 				currentSession = null;
 
@@ -69,7 +69,7 @@ var WEBVR = {
 			button.style.left = 'calc(50% - 50px)';
 			button.style.width = '100px';
 
-			button.textContent = 'ENTER XR';
+			button.textContent = 'ENTER VR';
 
 			button.onmouseenter = function () { button.style.opacity = '1.0'; };
 			button.onmouseleave = function () { button.style.opacity = '0.5'; };
@@ -118,7 +118,7 @@ var WEBVR = {
 			element.style.padding = '12px 6px';
 			element.style.border = '1px solid #fff';
 			element.style.borderRadius = '4px';
-			element.style.background = 'transparent';
+			element.style.background = 'rgba(0,0,0,0.1)';
 			element.style.color = '#fff';
 			element.style.font = 'normal 13px sans-serif';
 			element.style.textAlign = 'center';