Hey JME com!
What I try to do is creating a tree with alpha map leaves, export it to j3o, and then get the Material inside the game itself and change it to alpha.
This works on itself but when I add multiple leaves and do the follow settings:
Geometry helpMat = (Geometry) treeNode.getChild("Material.001");
Material matz = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
matz.setTexture("ColorMap", assetManager.loadTexture("/4bb8pU52180.png")); // with Unshaded.j3md
matz.getAdditionalRenderState().setBlendMode(BlendMode.Alpha);
matz.getAdditionalRenderState().setFaceCullMode(RenderState.FaceCullMode.Off);
helpMat.setMaterial(matz);
helpMat.setQueueBucket(Bucket.Transparent);
// treeNode.setShadowMode(RenderQueue.ShadowMode.Off);
y(left ingame image, right one Blender)
As you can see he cuts some part of the leaves.
When I turn FaceCullMode to Front it looks normal (ofc without the leaves you should normaly see).
I realy have no clue what to do, maybe because the leaves stick in each other and this parts cannot be rendered ?
Hope you can help, have a nice day!