commit 3e2376c4b0c29c13ef0c09925d3b23cccfc32ad7
Author: Leszek Koltunski <leszek@distoretedandroid.org>
Date:   Tue May 9 11:31:35 2017 +0100

    Make the Feedback APP work again.

diff --git a/src/main/res/raw/feedback_fragment_shader.glsl b/src/main/res/raw/feedback_fragment_shader.glsl
index 2f068f6..39f27ad 100644
--- a/src/main/res/raw/feedback_fragment_shader.glsl
+++ b/src/main/res/raw/feedback_fragment_shader.glsl
@@ -19,16 +19,11 @@
 
 precision mediump float;
 
-#if __VERSION__ != 100
-out vec4 fragColor;           // The output color
-#define FRAG_COLOR fragColor
-#else
-#define FRAG_COLOR gl_FragColor
-#endif
+out vec4 fragColor;
 
 //////////////////////////////////////////////////////////////////////////////////////////////
 
 void main()                    		
   {
-  FRAG_COLOR = vec4(1.0,1.0,1.0,1.0);
+  fragColor = vec4(1.0,1.0,1.0,1.0);
   }
\ No newline at end of file
diff --git a/src/main/res/raw/feedback_vertex_shader.glsl b/src/main/res/raw/feedback_vertex_shader.glsl
index 8482e63..6a6d012 100644
--- a/src/main/res/raw/feedback_vertex_shader.glsl
+++ b/src/main/res/raw/feedback_vertex_shader.glsl
@@ -19,13 +19,8 @@
 
 precision lowp float;
 
-#if __VERSION__ != 100
-in float inValue;
-out float outValue;
-#else
-attribute float inValue;
-varying float outValue;
-#endif
+in vec3 inValue;
+out vec3 outValue;
 
 //////////////////////////////////////////////////////////////////////////////////////////////