1 files changed, 3 insertions, 3 deletions
diff --git a/js/shader.js b/js/shader.js
index 2c30896..81a1ec5 100644
--- a/js/shader.js
+++ b/js/shader.js
@@ -20,9 +20,9 @@ var shader = (function(){
   }
   exports.run = function(canvas){
     var t = +new Date
-    var shader_canvas = selection.hidden ? canvas : selection.canvas;
-    var w = shader_canvas.w, h = shader_canvas.h
-    shader_canvas.forEach(function(lex, x, y){
+    shader.canvas = shader.canvas || canvas
+    var w = shader.canvas.w, h = shader.canvas.h
+    shader.canvas.forEach(function(lex, x, y){
       fn(lex, x, y, w, h, t)
       lex.build()
     })