diff --git a/lib/init.lua b/lib/init.lua
index 33c3171..a2fa23e 100644
--- a/lib/init.lua
+++ b/lib/init.lua
@@ -105,6 +105,17 @@ function light_world:draw(cb)
   end)
   self.post_shader:drawWith(self.render_buffer, self.l, self.t, self.s)
 end
+ 
+function light_world:drawBlur(blendmode, blur, canvas, canvas2, l, t, w, h, s)
+  if blur <= 0 then
+    return
+  end
+  canvas2:clear()
+  self.blurv:send("steps", blur)
+  self.blurh:send("steps", blur)
+  util.drawCanvasToCanvas(canvas, canvas2, {shader = self.blurv, blendmode = blendmode})
+  util.drawCanvasToCanvas(canvas2, canvas, {shader = self.blurh, blendmode = blendmode})
+end
 
 -- draw normal shading
 function light_world:drawNormalShading(l,t,w,h,s)
@@ -144,6 +155,7 @@ function light_world:drawNormalShading(l,t,w,h,s)
     love.graphics.rectangle("fill", -l/s, -t/s, w/s,h/s)
   end)
 
+  light_world:drawBlur("alpha", self.blur, self.normal, self.normal2, l, t, w, h, s)
   util.drawCanvasToCanvas(self.normal, self.render_buffer, {blendmode = "multiplicative"})
 end
 
@@ -178,11 +190,7 @@ function light_world:drawGlow(l,t,w,h,s)
     end
   end)
 
-  self.glowMap2:clear()
-  self.blurv:send("steps", self.glowBlur)
-  self.blurh:send("steps", self.glowBlur)
-  util.drawCanvasToCanvas(self.glowMap, self.glowMap2, {shader = self.blurv, blendmode = "alpha"})
-  util.drawCanvasToCanvas(self.glowMap2, self.glowMap, {shader = self.blurh, blendmode = "alpha"})
+  light_world:drawBlur("alpha", self.glowBlur, self.glowMap, self.glowMap2, l, t, w, h, s)
   util.drawCanvasToCanvas(self.glowMap, self.render_buffer, {blendmode = "additive"})
 end
 -- draw refraction