commit d21254e865295a89fee47506ee3fba8997e48b76
Author: leszek <leszek@koltunski.pl>
Date:   Tue May 2 22:59:06 2017 +0100

    Minimize differences from master branch.

diff --git a/src/main/java/org/distorted/examples/feedback/FeedbackRenderer.java b/src/main/java/org/distorted/examples/feedback/FeedbackRenderer.java
index 43a9cb3..2b72af2 100644
--- a/src/main/java/org/distorted/examples/feedback/FeedbackRenderer.java
+++ b/src/main/java/org/distorted/examples/feedback/FeedbackRenderer.java
@@ -105,13 +105,13 @@ class FeedbackRenderer implements GLSurfaceView.Renderer
       final InputStream vertStream = resources.openRawResource(org.distorted.library.R.raw.feedback_vertex_shader);
       final InputStream fragStream = resources.openRawResource(org.distorted.library.R.raw.feedback_fragment_shader);
 
-      String vertHeader= Distorted.GLSL_VERSION;
-      String fragHeader= Distorted.GLSL_VERSION;
+      int glsl = 300;
+      String header= "#version 300 es\n";
       String[] feedback = { "outValue" };
 
       try
         {
-        mFeedbackProgram = new DistortedProgram(vertStream,fragStream, vertHeader, fragHeader, Distorted.GLSL, feedback );
+        mFeedbackProgram = new DistortedProgram(vertStream,fragStream, header, header, glsl, feedback );
         }
       catch(Exception ex)
         {