diff --git a/index.html b/index.html
index 729a680..50090d5 100644
--- a/index.html
+++ b/index.html
@@ -138,9 +138,8 @@
 
 <script src="js/lex.js"></script>
 <script src="js/matrix.js"></script>
-<script src="js/blit.js"></script>
+<script src="js/gfx.js"></script>
 <script src="js/tool.js"></script>
-<script src="js/shader.js"></script>
 <script src="js/draw.js"></script>
 
 <script src="js/ui/brush.js"></script>
diff --git a/js/blit.js b/js/gfx.js
similarity index 63%
rename from js/blit.js
rename to js/gfx.js
index 2dce3e5..7efe45d 100644
--- a/js/blit.js
+++ b/js/gfx.js
@@ -1,3 +1,62 @@
+var shader = (function(){
+  var fn_str, fn, lex
+  var exports = {}
+  var animating = false
+  
+  exports.init = function(){
+    lex = new Lex (0, 0)
+    exports.build(demo_shader.innerHTML)
+  }
+  exports.build = function (fn_str){
+    try {
+      new_fn = new Function('lex', 'x', 'y', 'w', 'h', 't', fn_str)
+      new_fn(lex, 0, 0, 1, 1, 0)
+    }
+    catch (e) {
+      throw 'Shader execution error'
+    }
+    exports.fn = fn = new_fn
+    return fn
+  }
+  exports.run = function(canvas){
+    var t = +new Date
+    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()
+    })
+  }
+  exports.toggle = function(state){
+    animating = typeof state == "boolean" ? state : ! animating
+    shader_fps_el.classList.toggle('hidden')
+    return animating
+  }
+  exports.pause = function(){
+    animating = false
+    shader_fps_el.classList.add('hidden')
+    shader.fps_time = 0
+  }
+  exports.play = function(){
+    animating = true
+    shader_fps_el.classList.remove('hidden')
+  }
+  exports.animate = function (t){
+    requestAnimationFrame(exports.animate)
+    if (! animating) { return } 
+    if (shader.fps_time){
+      var ms = Date.now() - shader.fps_time
+      fps = 1000 / ms
+      shader_fps_el.innerHTML = (fps | 0) + ' fps'
+    }
+    shader.fps_time = Date.now()
+    exports.run(canvas)
+  }
+  
+  return exports
+
+})()
+
 var blit = (function(){
   var blit = {}
   blit.and = blit.atop = function(A, B, x, y){
diff --git a/js/shader.js b/js/shader.js
deleted file mode 100644
index f0ed548..0000000
--- a/js/shader.js
+++ /dev/null
@@ -1,58 +0,0 @@
-var shader = (function(){
-  var fn_str, fn, lex
-  var exports = {}
-  var animating = false
-  
-  exports.init = function(){
-    lex = new Lex (0, 0)
-    exports.build(demo_shader.innerHTML)
-  }
-  exports.build = function (fn_str){
-    try {
-      new_fn = new Function('lex', 'x', 'y', 'w', 'h', 't', fn_str)
-      new_fn(lex, 0, 0, 1, 1, 0)
-    }
-    catch (e) {
-      throw 'Shader execution error'
-    }
-    exports.fn = fn = new_fn
-    return fn
-  }
-  exports.run = function(canvas){
-    var t = +new Date
-    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()
-    })
-  }
-  exports.toggle = function(state){
-    animating = typeof state == "boolean" ? state : ! animating
-    shader_fps_el.classList.toggle('hidden')
-    return animating
-  }
-  exports.pause = function(){
-    animating = false
-    shader_fps_el.classList.add('hidden')
-    shader.fps_time = 0
-  }
-  exports.play = function(){
-    animating = true
-    shader_fps_el.classList.remove('hidden')
-  }
-  exports.animate = function (t){
-    requestAnimationFrame(exports.animate)
-    if (! animating) { return } 
-    if (shader.fps_time){
-      var ms = Date.now() - shader.fps_time
-      fps = 1000 / ms
-      shader_fps_el.innerHTML = (fps | 0) + ' fps'
-    }
-    shader.fps_time = Date.now()
-    exports.run(canvas)
-  }
-  
-  return exports
-
-})()