diff --git a/engine/src/tools/jme3tools/optimize/GeometryBatchFactory.java b/engine/src/tools/jme3tools/optimize/GeometryBatchFactory.java
index cc8bd2834..a0573c2f8 100644
--- a/engine/src/tools/jme3tools/optimize/GeometryBatchFactory.java
+++ b/engine/src/tools/jme3tools/optimize/GeometryBatchFactory.java
@@ -15,12 +15,10 @@ import com.jme3.scene.mesh.IndexBuffer;
 import com.jme3.texture.Texture;
 import com.jme3.util.BufferUtils;
 import com.jme3.util.IntMap.Entry;
-import com.jme3.util.TangentBinormalGenerator;
 import java.nio.Buffer;
 import java.nio.FloatBuffer;
 import java.nio.ShortBuffer;
 import java.util.*;
-import java.util.logging.Level;
 import java.util.logging.Logger;
 import jme3tools.optimize.TextureAtlas.TextureAtlasTile;
 
@@ -358,6 +356,7 @@ public class GeometryBatchFactory {
         geom.setMesh(mesh);
 
         Material mat = new Material(mgr, "Common/MatDefs/Light/Lighting.j3md");
+        mat.getAdditionalRenderState().setAlphaTest(true);
         Texture diffuseMap = atlas.getAtlasTexture("DiffuseMap");
         Texture normalMap = atlas.getAtlasTexture("NormalMap");
         Texture specularMap = atlas.getAtlasTexture("SpecularMap");
diff --git a/engine/src/tools/jme3tools/optimize/TextureAtlas.java b/engine/src/tools/jme3tools/optimize/TextureAtlas.java
index 880c2ad34..6c3567235 100644
--- a/engine/src/tools/jme3tools/optimize/TextureAtlas.java
+++ b/engine/src/tools/jme3tools/optimize/TextureAtlas.java
@@ -183,13 +183,13 @@ public class TextureAtlas {
                     image[i + 3] = sourceData.get(j + 3); //r
                 } else if (source.getFormat() == Format.BGR8) {
                     int j = (xPos + yPos * width) * 3;
-                    image[i] = 0; //a
+                    image[i] = 1; //a
                     image[i + 1] = sourceData.get(j); //b
                     image[i + 2] = sourceData.get(j + 1); //g
                     image[i + 3] = sourceData.get(j + 2); //r
                 } else if (source.getFormat() == Format.RGB8) {
                     int j = (xPos + yPos * width) * 3;
-                    image[i] = 0; //a
+                    image[i] = 1; //a
                     image[i + 1] = sourceData.get(j + 2); //b
                     image[i + 2] = sourceData.get(j + 1); //g
                     image[i + 3] = sourceData.get(j); //r