fix cors issue
diff --git a/public/data-gl/surface-leather.js b/public/data-gl/surface-leather.js
index 83c6801..10b0a68 100644
--- a/public/data-gl/surface-leather.js
+++ b/public/data-gl/surface-leather.js
@@ -8,6 +8,7 @@
 
 var heightImg = new Image();
 heightImg.onload = update;
+heightImg.crossOrigin = 'anonymous';
 heightImg.src = ROOT_PATH + '/data-gl/asset/leather/leather_height.jpg';
 
 function update() {