commit 472e51e122854e57a826c23b62eed3304c4b6fb4
Author: Leszek Koltunski <leszek@distoretedandroid.org>
Date:   Thu Apr 27 17:06:05 2017 +0100

    Minor.

diff --git a/src/main/java/org/distorted/library/DistortedEffectsPostprocess.java b/src/main/java/org/distorted/library/DistortedEffectsPostprocess.java
index 55705de..bfdb77b 100644
--- a/src/main/java/org/distorted/library/DistortedEffectsPostprocess.java
+++ b/src/main/java/org/distorted/library/DistortedEffectsPostprocess.java
@@ -299,7 +299,7 @@ public class DistortedEffectsPostprocess
     mP.mQualityLevel = level;
     mP.mQualityScale = 1.0f;
 
-    for(int i=0; i<level; i++) mP.mQualityScale*=0.5f;
+    for(int i=0; i<level; i++) mP.mQualityScale*=EffectQuality.MULTIPLIER;
     }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////   
diff --git a/src/main/java/org/distorted/library/DistortedOutputSurface.java b/src/main/java/org/distorted/library/DistortedOutputSurface.java
index c85ca8f..a4aa743 100644
--- a/src/main/java/org/distorted/library/DistortedOutputSurface.java
+++ b/src/main/java/org/distorted/library/DistortedOutputSurface.java
@@ -186,7 +186,7 @@ abstract class DistortedOutputSurface extends DistortedSurface implements Distor
             mBuffer2[j] = new DistortedFramebuffer(false                     , DistortedSurface.TYPE_SYST,
                                                     (int)(mWidth*mipmap), (int)(mHeight*mipmap) );
             mBuffer1[j].mMipmap = mipmap;
-            mipmap *= 0.5f;
+            mipmap *= EffectQuality.MULTIPLIER;
             }
           DistortedSurface.toDo();  // create immediately
           }
diff --git a/src/main/java/org/distorted/library/EffectQuality.java b/src/main/java/org/distorted/library/EffectQuality.java
index 093f90f..2279294 100644
--- a/src/main/java/org/distorted/library/EffectQuality.java
+++ b/src/main/java/org/distorted/library/EffectQuality.java
@@ -37,6 +37,7 @@ public enum EffectQuality
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
+  final static float MULTIPLIER = 0.5f;      // each next Quality level renders into 1/0.5 smaller buffers
   final static int LENGTH = values().length;
 
   final int level;