diff --git a/com/danitheskunk/skunkworks/backends/gl/Filter.java b/com/danitheskunk/skunkworks/backends/gl/Filter.java
index 4d8cfe8..4998de1 100644
--- a/com/danitheskunk/skunkworks/backends/gl/Filter.java
+++ b/com/danitheskunk/skunkworks/backends/gl/Filter.java
@@ -23,7 +23,10 @@ public abstract class Filter {
 	}
 
 	public void apply() {
+		//shouldn't be calculating size ratio every frame,
+		//but getting all the callbacks right is hard
 		calcSizeRatio();
+
 		output.bind();
 		input.bindTexture();
 		program.use();