commit a3ddee5eaed1e7b67fc92f45c29b9b071bc40c30
Author: Leszek Koltunski <leszek@koltunski.pl>
Date:   Wed Jun 27 12:08:03 2018 +0100

    I am pretty sure this time the flashing issues on Mali T880 r12 driver are finally fixed.
    
    The fix: a queue of FBOs render to, just like before, but this time in DistortedScreen we blit not the current FBO, but the one computed several frames ago.
    
    This of course introduces a delay and uses more memory, but it appears to work and does not seem to have any effects on speed.

diff --git a/src/main/java/org/distorted/examples/check/CheckRenderer.java b/src/main/java/org/distorted/examples/check/CheckRenderer.java
index f6a2236..85179e7 100644
--- a/src/main/java/org/distorted/examples/check/CheckRenderer.java
+++ b/src/main/java/org/distorted/examples/check/CheckRenderer.java
@@ -27,7 +27,6 @@ import javax.microedition.khronos.opengles.GL10;
 
 import org.distorted.examples.R;
 
-import org.distorted.library.effect.EffectName;
 import org.distorted.library.effect.EffectType;
 import org.distorted.library.effect.FragmentEffectChroma;
 import org.distorted.library.effect.MatrixEffectMove;