commit da412a40a38684b2edd6e2e7362c67723fbac616
Author: Leszek Koltunski <leszek@koltunski.pl>
Date:   Sat May 23 21:37:39 2020 +0100

    Fix VertexEffectRotate.
    'MeshJoin' app now back it its functionality from 'master'

diff --git a/src/main/java/org/distorted/examples/meshjoin/MeshJoinRenderer.java b/src/main/java/org/distorted/examples/meshjoin/MeshJoinRenderer.java
index ffec0f3..0921e27 100644
--- a/src/main/java/org/distorted/examples/meshjoin/MeshJoinRenderer.java
+++ b/src/main/java/org/distorted/examples/meshjoin/MeshJoinRenderer.java
@@ -123,6 +123,7 @@ class MeshJoinRenderer implements GLSurfaceView.Renderer
       mScreen.attach(mTexture,mEffects,mMesh);
 
       DistortedLibrary.setMax(EffectType.VERTEX, 7);
+      VertexEffectSink.enable();
 
       try
         {
@@ -224,8 +225,8 @@ class MeshJoinRenderer implements GLSurfaceView.Renderer
       effect3.setMeshAssociation(15);  // apply to all 4 meshes
       effect4.setMeshAssociation(14);  // apply to mesh[1], [2] and [3]
       effect5.setMeshAssociation( 2);  // apply only to mesh[1]
-      effect6.setMeshAssociation( 0);  // apply onlt to mesh[2]
-      effect7.setMeshAssociation( 0);  // apply only to mesh[3]
+      effect6.setMeshAssociation( 4);  // apply onlt to mesh[2]
+      effect7.setMeshAssociation( 8);  // apply only to mesh[3]
 
       result.apply(effect1);
       result.apply(effect2);