Problem when using DirectionalLightShadowFilter inside a Post Filter

Troubleshooting graphics
1

Hello again JME3 community :slight_smile:

I’m working on a PoC, but having a problem when using DirectionalLightShadowFilter
In the SceneComposer, it does render normally, without any problems.

scene_composer
scene_composer1131×531 384 KB

But when I try to start the application

@Override
    public void simpleInitApp() {
        Node mainScene = new Node("Main Scene");
        
        Spatial stage1 = assetManager.loadModel("Scenes/demo.j3o");
        stage1.setShadowMode(RenderQueue.ShadowMode.CastAndReceive);
        mainScene.attachChild(stage1);
        
        
        AmbientLight al = new AmbientLight();
        al.setColor(ColorRGBA.DarkGray.multLocal(0.1F));
        mainScene.addLight(al);
        
        
        flyCam.setMoveSpeed(10);    
        cam.setFrustumPerspective(45f, (float) cam.getWidth() / cam.getHeight(), 0.001f, 1000f);
        
        int degree = 16;
        renderer.setDefaultAnisotropicFilter(degree);   

        FilterPostProcessor processor = (FilterPostProcessor) assetManager.loadAsset("Filters/DemoFilter.j3f");
        viewPort.addProcessor(processor);
        
        rootNode.attachChild(mainScene);
        
        
    }

It throws the following error:

java.lang.NullPointerException: Cannot invoke "com.jme3.material.Material.setTexture(String, com.jme3.texture.Texture)" because the return value of "com.jme3.post.Filter.getMaterial()" is null
	at com.jme3.post.Filter.setDepthTexture(Filter.java:310)
	at com.jme3.post.FilterPostProcessor.initFilter(FilterPostProcessor.java:190)
	at com.jme3.post.FilterPostProcessor.reshape(FilterPostProcessor.java:510)
	at com.jme3.post.FilterPostProcessor.initialize(FilterPostProcessor.java:169)
	at com.jme3.renderer.RenderManager.renderViewPort(RenderManager.java:1179)
	at com.jme3.renderer.RenderManager.render(RenderManager.java:1287)
	at com.jme3.app.SimpleApplication.update(SimpleApplication.java:278)
	at com.jme3.system.lwjgl.LwjglWindow.runLoop(LwjglWindow.java:628)
	at com.jme3.system.lwjgl.LwjglWindow.run(LwjglWindow.java:717)
	at java.base/java.lang.Thread.run(Thread.java:833)

It seems that some material that I’m using is causing the issue. But I checked each one of them, deleted and applied just one simple Lighting material with grey texture to the whole scene and the problem persists. I even updated the SDK and JME3 version and the problem persists.

I feel that is something very simple which I’m missing here.

Does anyone have a guess about what might be the cause?

Thanks in advance :slight_smile:

2

Is this a custom filter or?

If it’s a saved shadow filter then maybe the serialization is messed up.

My guess is that the filter’s getMaterial() method is returning null instead of creating a material.

2 Likes
3

Yes, it is a custom filter

filter_settings

filter

light_properties

What might be the reason that getMaterial() is returning null? If I remove the DirectionalLightShadowFilter, it works

4

Where is DirectionalLight ?

5

(Post can’t be empty.)