com.badlogic.gdx.graphics.g3d.Material Java Examples

public static void init() {
	list = new Array<>();
	ModelBuilder mb = new ModelBuilder();
	Vector3 norm = new Vector3(0f, 1f, 0f);
	Texture texture = Assets.manager.get("textures/shadow.png", Texture.class);
	Material material = new Material(TextureAttribute.createDiffuse(texture));
	material.set(new BlendingAttribute(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA, 0.7f));
	//material.set(new DepthTestAttribute(0)); // disable depth testing
	long attr = Usage.Position | Usage.TextureCoordinates;
	float s = 1f;
	model = mb.createRect(
			-s, 0f, -s,// bl
			-s, 0f, s, // tl
			s, 0f, s,  // tr
			s, 0f, -s,  // br
			norm.x, norm.y, norm.z,
			material,
			attr
	);
}
 

public static Model createAxes() {
    final float GRID_MIN = -10f;
    final float GRID_MAX = 10f;
    final float GRID_STEP = 1f;
    ModelBuilder modelBuilder = new ModelBuilder();
    modelBuilder.begin();
    MeshPartBuilder builder = modelBuilder.part("grid", GL20.GL_LINES,
            VertexAttributes.Usage.Position | VertexAttributes.Usage.ColorUnpacked, new Material());
    builder.setColor(Color.LIGHT_GRAY);
    for (float t = GRID_MIN; t <= GRID_MAX; t += GRID_STEP) {
        builder.line(t, 0, GRID_MIN, t, 0, GRID_MAX);
        builder.line(GRID_MIN, 0, t, GRID_MAX, 0, t);
    }
    builder = modelBuilder.part("axes", GL20.GL_LINES,
            VertexAttributes.Usage.Position | VertexAttributes.Usage.ColorUnpacked, new Material());
    builder.setColor(Color.RED);
    builder.line(0, 0, 0, 100, 0, 0);
    builder.setColor(Color.GREEN);
    builder.line(0, 0, 0, 0, 100, 0);
    builder.setColor(Color.BLUE);
    builder.line(0, 0, 0, 0, 0, 100);
    return modelBuilder.end();
}
 

public void createBillboardTest() {
	ModelBuilder mb = new ModelBuilder();
	mb.begin();

	long attr = Usage.TextureCoordinates | Usage.Position | Usage.Normal;
	TextureRegion region = Assets.getAtlas().findRegion("sprites/test-guy");
	Material mat = new Material(TextureAttribute.createDiffuse(region.getTexture()));
	boolean blended = true;
	float opacity = 1f;
	mat.set(new BlendingAttribute(blended, GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA, opacity));
	MeshPartBuilder mpb = mb.part("rect", GL20.GL_TRIANGLES, attr, mat);
	mpb.setUVRange(region);
	// the coordinates are offset so that we can easily set the center position to align with the entity's body
	float sz = 2f; // size
	float b = -sz/2; // base
	float max = sz/2; // max
	Vector3 bl = new Vector3(b, b, 0f);
	Vector3 br = new Vector3(b, max, 0f);
	Vector3 tr = new Vector3(max, max, 0f);
	Vector3 tl = new Vector3(max, b, 0f);
	Vector3 norm = new Vector3(0f, 0f, 1f);
	mpb.rect(bl, tl, tr, br, norm);
	billboardTestModel = mb.end();
}
 

/** players are represented by cubes, with another cube marking the direction it is facing */
public void createPlayerModel() {
	ModelBuilder mb = new ModelBuilder();
	ModelBuilder mb2 = new ModelBuilder();
	long attr = Usage.Position | Usage.Normal;
	float r = 0.5f;
	float g = 1f;
	float b = 0.75f;
	Material material = new Material(ColorAttribute.createDiffuse(new Color(r, g, b, 1f)));
	Material faceMaterial = new Material(ColorAttribute.createDiffuse(Color.BLUE));
	float w = 1f;
	float d = w;
	float h = 2f;
	mb.begin();
	//playerModel = mb.createBox(w, h, d, material, attr);
	Node node = mb.node("box", mb2.createBox(w, h, d, material, attr));
	// the face is just a box to show which direction the player is facing
	Node faceNode = mb.node("face", mb2.createBox(w/2, h/2, d/2, faceMaterial, attr));
	faceNode.translation.set(0f, 0f, d/2);
	playerModel = mb.end();
}
 

private Terrain(int vertexResolution) {
    this.transform = new Matrix4();
    this.attribs = MeshBuilder.createAttributes(VertexAttributes.Usage.Position | VertexAttributes.Usage.Normal
            | VertexAttributes.Usage.TextureCoordinates);
    this.posPos = attribs.getOffset(VertexAttributes.Usage.Position, -1);
    this.norPos = attribs.getOffset(VertexAttributes.Usage.Normal, -1);
    this.uvPos = attribs.getOffset(VertexAttributes.Usage.TextureCoordinates, -1);
    this.stride = attribs.vertexSize / 4;

    this.vertexResolution = vertexResolution;
    this.heightData = new float[vertexResolution * vertexResolution];

    this.terrainTexture = new TerrainTexture();
    this.terrainTexture.setTerrain(this);
    material = new Material();
    material.set(new TerrainTextureAttribute(TerrainTextureAttribute.ATTRIBUTE_SPLAT0, terrainTexture));
}
 

private static void createAxes() {
	ModelBuilder modelBuilder = new ModelBuilder();
	modelBuilder.begin();
	MeshPartBuilder builder = modelBuilder.part("grid", GL20.GL_LINES, Usage.Position | Usage.ColorUnpacked, new Material());
	builder.setColor(Color.LIGHT_GRAY);
	for (float t = GRID_MIN; t <= GRID_MAX; t+=GRID_STEP) {
		builder.line(t, 0, GRID_MIN, t, 0, GRID_MAX);
		builder.line(GRID_MIN, 0, t, GRID_MAX, 0, t);
	}
	builder = modelBuilder.part("axes", GL20.GL_LINES, Usage.Position | Usage.ColorUnpacked, new Material());
	builder.setColor(Color.RED);
	builder.line(0, 0, 0, 10, 0, 0);
	builder.setColor(Color.GREEN);
	builder.line(0, 0, 0, 0, 10, 0);
	builder.setColor(Color.BLUE);
	builder.line(0, 0, 0, 0, 0, 10);
	axesModel = modelBuilder.end();
	axesInstance = new ModelInstance(axesModel);
}
 

public static void createFloor() {

		ModelBuilder modelBuilder = new ModelBuilder();
		modelBuilder.begin();
		MeshPartBuilder mpb = modelBuilder.part("parts", GL20.GL_TRIANGLES,
				Usage.Position | Usage.Normal | Usage.ColorUnpacked, new Material(
						ColorAttribute.createDiffuse(Color.WHITE)));
		mpb.setColor(1f, 1f, 1f, 1f);
//		mpb.box(0, -0.1f, 0, 10, .2f, 10);
		mpb.rect(-10, 0, -10, 
				-10, 0, 10,
				10, 0, 10,
				10, 0, -10, 0, 1, 0);
		floorModel = modelBuilder.end();
		floorInstance = new ModelInstance(floorModel);
		
		// TODO Set only when FBO is active
		floorInstance.materials.get(0).set(new BlendingAttribute(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA));
	}
 

@Override
public void create() {
	assets = new AssetManager();
	String model = "Bambo_House.g3db";
	assets.load(model, Model.class);
	assets.finishLoading();
	modelInstance = new ModelInstance(assets.get(model, Model.class), new Matrix4().setToScaling(0.6f, 0.6f, 0.6f));

	DefaultShader.Config config = new Config();
	config.defaultCullFace = GL20.GL_NONE;
	ShaderProvider shaderProvider = new DefaultShaderProvider(config);
	modelBatch = new ModelBatch(shaderProvider);

	ModelBuilder builder = new ModelBuilder();
	float groundSize = 1000f;
	ground = new ModelInstance(builder.createRect(-groundSize, 0, groundSize, groundSize, 0, groundSize, groundSize, 0, -groundSize, -groundSize, 0, -groundSize, 0,
			1, 0, new Material(), Usage.Position | Usage.Normal), new Matrix4().setToTranslation(0, -0.01f, 0));
	environment = new Environment();
	environment.set(new ColorAttribute(ColorAttribute.AmbientLight, 0.4f, 0.4f, 0.4f, 1f));
	environment.add(new DirectionalLight().set(0.8f, 0.8f, 0.8f, -1f, -0.8f, -0.2f));

	VirtualReality.renderer.listeners.add(this);
	// VirtualReality.head.setCyclops(true);
}
 

public RotateHandle(int id, Color color) {
    super(id);
    model = UsefulMeshs.torus(new Material(ColorAttribute.createDiffuse(color)), 20, 1f, 50, 50);
    modelInstance = new ModelInstance(model);
    modelInstance.materials.first().set(getIdAttribute());
    switch (id) {
    case X_HANDLE_ID:
        this.getRotationEuler().y = 90;
        this.getScale().x = 0.9f;
        this.getScale().y = 0.9f;
        this.getScale().z = 0.9f;
        break;
    case Y_HANDLE_ID:
        this.getRotationEuler().x = 90;
        break;
    case Z_HANDLE_ID:
        this.getRotationEuler().z = 90;
        this.getScale().x = 1.1f;
        this.getScale().y = 1.1f;
        this.getScale().z = 1.1f;
        break;
    }
    // mi.transform.translate(0, 100, 0);
}
 

public ScaleTool(ProjectManager projectManager, GameObjectPicker goPicker, ToolHandlePicker handlePicker,
        ShapeRenderer shapeRenderer, ModelBatch batch, CommandHistory history) {
    super(projectManager, goPicker, handlePicker, batch, history);

    this.shapeRenderer = shapeRenderer;

    ModelBuilder modelBuilder = new ModelBuilder();
    Model xPlaneHandleModel = UsefulMeshs.createArrowStub(new Material(ColorAttribute.createDiffuse(COLOR_X)),
            Vector3.Zero, new Vector3(15, 0, 0));
    Model yPlaneHandleModel = UsefulMeshs.createArrowStub(new Material(ColorAttribute.createDiffuse(COLOR_Y)),
            Vector3.Zero, new Vector3(0, 15, 0));
    Model zPlaneHandleModel = UsefulMeshs.createArrowStub(new Material(ColorAttribute.createDiffuse(COLOR_Z)),
            Vector3.Zero, new Vector3(0, 0, 15));
    Model xyzPlaneHandleModel = modelBuilder.createBox(3, 3, 3,
            new Material(ColorAttribute.createDiffuse(COLOR_XYZ)),
            VertexAttributes.Usage.Position | VertexAttributes.Usage.Normal);

    xHandle = new ScaleHandle(X_HANDLE_ID, xPlaneHandleModel);
    yHandle = new ScaleHandle(Y_HANDLE_ID, yPlaneHandleModel);
    zHandle = new ScaleHandle(Z_HANDLE_ID, zPlaneHandleModel);
    xyzHandle = new ScaleHandle(XYZ_HANDLE_ID, xyzPlaneHandleModel);

    handles = new ScaleHandle[] { xHandle, yHandle, zHandle, xyzHandle };
}
 

public static Model buildPlaneModel(final float width,
									final float height, final Material material, final float u1,
									final float v1, final float u2, final float v2) {

	ModelBuilder modelBuilder = new ModelBuilder();
	modelBuilder.begin();
	MeshPartBuilder bPartBuilder = modelBuilder.part("rect", GL20.GL_TRIANGLES,
			VertexAttributes.Usage.Position
					| VertexAttributes.Usage.Normal
					| VertexAttributes.Usage.TextureCoordinates, material);
	bPartBuilder.setUVRange(u1, v1, u2, v2);
	bPartBuilder.rect(-(width * 0.5f), -(height * 0.5f), 0, (width * 0.5f),
			-(height * 0.5f), 0, (width * 0.5f), (height * 0.5f), 0,
			-(width * 0.5f), (height * 0.5f), 0, 0, 0, -1);

	return (modelBuilder.end());
}
 

@Override
public void create() {
	Material material = new Material();
	ModelBuilder mb = new ModelBuilder();
	MeshPartBuilder mpb;
	mb.begin();
	
	mpb = mb.part("part1", GL20.GL_TRIANGLES, Usage.Position, material);
	BoxShapeBuilder.build(mpb, 1, 1, 1);
	
	mpb = mb.part("part2", GL20.GL_TRIANGLES, Usage.Position, material);
	mpb.setVertexTransform(new Matrix4().setToTranslation(2, 0, 0));
	BoxShapeBuilder.build(mpb, 1, 1, 1);
	
	Model model = mb.end();
	new GLTFExporter().export(model, Gdx.files.absolute("/tmp/ExportSharedIndexBufferTest.gltf"));
	Gdx.app.exit();
}
 

public static Model buildCompassModel() {
	float compassScale = 5;
	ModelBuilder modelBuilder = new ModelBuilder();
	Model arrow = modelBuilder.createArrow(Vector3.Zero,
			Vector3.Y.cpy().scl(compassScale), null,
			VertexAttributes.Usage.Position | VertexAttributes.Usage.Normal);
	modelBuilder.begin();

	Mesh zArrow = arrow.meshes.first().copy(false);
	zArrow.transform(new Matrix4().rotate(Vector3.X, 90));
	modelBuilder.part("part1", zArrow, GL20.GL_TRIANGLES,
			new Material(ColorAttribute.createDiffuse(Color.BLUE)));

	modelBuilder.node();
	Mesh yArrow = arrow.meshes.first().copy(false);
	modelBuilder.part("part2", yArrow, GL20.GL_TRIANGLES,
			new Material(ColorAttribute.createDiffuse(Color.GREEN)));

	modelBuilder.node();
	Mesh xArrow = arrow.meshes.first().copy(false);
	xArrow.transform(new Matrix4().rotate(Vector3.Z, -90));
	modelBuilder.part("part3", xArrow, GL20.GL_TRIANGLES,
			new Material(ColorAttribute.createDiffuse(Color.RED)));

	arrow.dispose();
	return modelBuilder.end();
}
 

/**
 * Applies this material asset to the libGDX material.
 *
 * @param material
 * @return
 */
public Material applyToMaterial(Material material) {
    if (diffuseColor != null) {
        material.set(new ColorAttribute(ColorAttribute.Diffuse, diffuseColor));
    }
    if (diffuseTexture != null) {
        material.set(new TextureAttribute(TextureAttribute.Diffuse, diffuseTexture.getTexture()));
    } else {
        material.remove(TextureAttribute.Diffuse);
    }
    material.set(new FloatAttribute(FloatAttribute.Shininess, shininess));

    return material;
}
 

public static Model createArrowStub(Material mat, Vector3 from, Vector3 to) {
    ModelBuilder modelBuilder = new ModelBuilder();
    modelBuilder.begin();
    MeshPartBuilder meshBuilder;
    // line
    meshBuilder = modelBuilder.part("line", GL20.GL_LINES,
            VertexAttributes.Usage.Position | VertexAttributes.Usage.ColorUnpacked, mat);
    meshBuilder.line(from.x, from.y, from.z, to.x, to.y, to.z);
    // stub
    Node node = modelBuilder.node();
    node.translation.set(to.x, to.y, to.z);
    meshBuilder = modelBuilder.part("stub", GL20.GL_TRIANGLES, Usage.Position | Usage.Normal, mat);
    BoxShapeBuilder.build(meshBuilder, 2, 2, 2);
    return modelBuilder.end();
}
 

public TranslateTool(ProjectManager projectManager, GameObjectPicker goPicker, ToolHandlePicker handlePicker,
        ModelBatch batch, CommandHistory history) {

    super(projectManager, goPicker, handlePicker, batch, history);

    ModelBuilder modelBuilder = new ModelBuilder();

    Model xHandleModel = modelBuilder.createArrow(0, 0, 0, 1, 0, 0, ARROW_CAP_SIZE, ARROW_THIKNESS, ARROW_DIVISIONS,
            GL20.GL_TRIANGLES, new Material(ColorAttribute.createDiffuse(COLOR_X)),
            VertexAttributes.Usage.Position);
    Model yHandleModel = modelBuilder.createArrow(0, 0, 0, 0, 1, 0, ARROW_CAP_SIZE, ARROW_THIKNESS, ARROW_DIVISIONS,
            GL20.GL_TRIANGLES, new Material(ColorAttribute.createDiffuse(COLOR_Y)),
            VertexAttributes.Usage.Position);
    Model zHandleModel = modelBuilder.createArrow(0, 0, 0, 0, 0, 1, ARROW_CAP_SIZE, ARROW_THIKNESS, ARROW_DIVISIONS,
            GL20.GL_TRIANGLES, new Material(ColorAttribute.createDiffuse(COLOR_Z)),
            VertexAttributes.Usage.Position);
    Model xzPlaneHandleModel = modelBuilder.createSphere(1, 1, 1, 20, 20,
            new Material(ColorAttribute.createDiffuse(COLOR_XZ)), VertexAttributes.Usage.Position);

    xHandle = new TranslateHandle(X_HANDLE_ID, xHandleModel);
    yHandle = new TranslateHandle(Y_HANDLE_ID, yHandleModel);
    zHandle = new TranslateHandle(Z_HANDLE_ID, zHandleModel);
    xzPlaneHandle = new TranslateHandle(XZ_HANDLE_ID, xzPlaneHandleModel);
    handles = new TranslateHandle[] { xHandle, yHandle, zHandle, xzPlaneHandle };

    gameObjectModifiedEvent = new GameObjectModifiedEvent(null);
}
 

public static void createOutlineModel(Model model, Color outlineColor, float fattenAmount) {
	fatten(model, fattenAmount);
	for (Material m : model.materials) {
		m.clear();
		m.set(new IntAttribute(IntAttribute.CullFace, Gdx.gl.GL_FRONT));
		m.set(ColorAttribute.createDiffuse(outlineColor));
	}
}
 

public static Model buildBillboardModel(Texture texture, float width, float height) {
	TextureRegion textureRegion = new TextureRegion(texture, texture.getWidth(), texture.getHeight());
	Material material = new Material();
	material.set(new TextureAttribute(TextureAttribute.Diffuse, textureRegion));
	material.set(new ColorAttribute(ColorAttribute.AmbientLight, Color.WHITE));
	material.set(new BlendingAttribute());
	return ModelFactory.buildPlaneModel(width, height, material, 0, 0, 1, 1);
}
 

public void setColor (float r, float g, float b, float a) {
	color.set(r, g, b, a);
	if (modelInstance != null) {
		for (Material m : modelInstance.materials) {
			ColorAttribute ca = (ColorAttribute)m.get(ColorAttribute.Diffuse);
			if (ca != null) ca.color.set(r, g, b, a);
		}
	}
}
 

public FluidSimulatorGeneric(FluidSimulatorStarter fluidSimulatorStarter) {
		this.game = fluidSimulatorStarter;
		// LibGDX single batches cannot have a size more than 5460
		batch = new SpriteBatch(IS_DESKTOP ? 5460 : ANDROID_SIZE);
		font = new BitmapFont();
		camera = new OrthographicCamera(WORLD_WIDTH, WORLD_HEIGHT);
		camera.position.set(0, (WORLD_HEIGHT / 2) - 1, 0);
		immediateRenderer = new ImmediateModeRenderer20(SIZE*6, false, true, 0);
		irt = new Renderer20(SIZE*6, false, true, 1);
		irt2 = new ImmediateModeRenderer20(SIZE*11, false, true, 1);
		shapeRenderer = new ShapeRenderer(SIZE);
		renderer = new Box2DDebugRenderer(true, true, false, true, false, false);
		
		//3D
		camera3D = new PerspectiveCamera(67, WORLD_WIDTH, WORLD_HEIGHT);
		camera3D.position.set(0, 130f, 250f);
		camera3D.lookAt(0,150f,0);
		camera3D.near = 0.1f;
		camera3D.far = 500f;
		camera3D.update();
		ModelBuilder modelBuilder = new ModelBuilder();
//        model = modelBuilder.createSphere(5f, 5f, 5f, 4, 4, GL10.GL_TRIANGLES,
//                new Material(ColorAttribute.createDiffuse(Color.GREEN)),
//                Usage.Position | Usage.Normal);
        model = modelBuilder.createBox(5f, 5f, 5f,
            new Material(ColorAttribute.createDiffuse(Color.GREEN)),
            Usage.Position | Usage.Normal);
        instance = new ModelInstance(model);
        modelBatch = new ModelBatch();
        environment = new Environment();
        environment.set(new ColorAttribute(ColorAttribute.AmbientLight, 0.4f, 0.4f, 0.4f, 1f));
        environment.add(new DirectionalLight().set(0.8f, 0.8f, 0.8f, 0, -0.8f, -0.2f));
        camController = new Camera3DController(camera3D);
        camController.setFluidSimulator(this);
		
		world = new World(new Vector2(0, -9.8f), false);
		world.setContactListener(this);
	}
 

public void setColor(Color color){
	ColorAttribute ca = new ColorAttribute(ColorAttribute.Diffuse, color);
	if(getMaterial("Color") != null)
		getMaterial("Color").set(ca);
	else
		materials.add(new Material("Color", ca));
		model.materials.add(new Material("Color", ca));
}
 

public HeightMapModel(HeightMap hm) {
	this.heightMap = hm;
	String groundTexName = "textures/hm_paint.png";
	groundTexture = new Texture(Gdx.files.internal(groundTexName), true);
	groundTexture.setWrap(Texture.TextureWrap.Repeat, Texture.TextureWrap.Repeat);
	groundTexture.setFilter(Texture.TextureFilter.MipMapLinearNearest, Texture.TextureFilter.Linear);
	groundMat = new Material(TextureAttribute.createDiffuse(groundTexture)
			, ColorAttribute.createSpecular(specular)
	);
	createGround();
}
 

/** create some boxes to fill the level with some test geometry */
public static void createBoxes(int count) {
	ModelBuilder main = new ModelBuilder();
	ModelBuilder mb = new ModelBuilder();
	Material material = new Material();
	if (Main.isClient()) {
		material.set(TextureAttribute.createDiffuse(Assets.manager.get("textures/marble.jpg", Texture.class)));
	}
	main.begin();
	//float x = GameWorld.WORLD_WIDTH;
	//float y = GameWorld.WORLD_DEPTH;
	for (int i = 0; i < count; i++) {
		//float w = MathUtils.random(minW, maxW);
		float w = 8f;
		float d = 8f;
		float h = (i+1)*5f;
		tmp.set(10f + (w+2) * i, 0f, 10f + (d+2) * i);
		if (Main.isClient()) {
			mb.begin();
			MeshPartBuilder mpb = mb.part("part-" + i, GL20.GL_TRIANGLES, Usage.Position | Usage.Normal | Usage.TextureCoordinates, material);
			mpb.box(w, h, d);
			Model boxModel = mb.end();
			Node node = main.node("box-" + i, boxModel);
			node.translation.set(tmp);
			q.idt();
			node.rotation.set(q);
		}
		//node.translation.set(MathUtils.random(x), 0f, MathUtils.random(y));
		//q.set(Vector3.X, -90);
		mtx.set(q);
		mtx.setTranslation(tmp);
		btCollisionObject obj = Physics.inst.createBoxObject(tmp.set(w/2, h/2, d/2));
		obj.setWorldTransform(mtx);
		Physics.applyStaticGeometryCollisionFlags(obj);
		Physics.inst.addStaticGeometryToWorld(obj);
	}
	Model finalModel = main.end();
	instance = new ModelInstance(finalModel);
}
 

protected void setMaterial(String materialID) {
	materialTable.clearChildren();
	if(materialID == null || materialID.isEmpty()) return;
	
	final Material material = materialMap.get(materialID);
	
	// base color
	materialTable.add(new ColorAttributeUI(getSkin(), material.get(ColorAttribute.class, PBRColorAttribute.BaseColorFactor))).row();
	addMaterialTextureSwitch("Color Texture", material, PBRTextureAttribute.BaseColorTexture);

	// emissive
	materialTable.add(new ColorAttributeUI(getSkin(), material.get(ColorAttribute.class, PBRColorAttribute.Emissive))).row();
	addMaterialTextureSwitch("Emissive Texture", material, PBRTextureAttribute.EmissiveTexture);
	
	// metallic roughness
	materialTable.add(new FloatAttributeUI(getSkin(), material.get(PBRFloatAttribute.class, PBRFloatAttribute.Metallic))).row();
	materialTable.add(new FloatAttributeUI(getSkin(), material.get(PBRFloatAttribute.class, PBRFloatAttribute.Roughness))).row();
	addMaterialTextureSwitch("MR Texture", material, PBRTextureAttribute.MetallicRoughnessTexture);
	
	// normal
	materialTable.add(new FloatAttributeUI(getSkin(), material.get(PBRFloatAttribute.class, PBRFloatAttribute.NormalScale))).row();
	addMaterialTextureSwitch("Normal Texture", material, PBRTextureAttribute.NormalTexture);
	
	// occlusion
	materialTable.add(new FloatAttributeUI(getSkin(), material.get(PBRFloatAttribute.class, PBRFloatAttribute.OcclusionStrength))).row();
	addMaterialTextureSwitch("Occlusion Texture", material, PBRTextureAttribute.OcclusionTexture);
}
 

private Model createModel() {
    ModelBuilder modelBuilder = new ModelBuilder();
    Model model = modelBuilder.createBox(1, 1, 1,
            new Material(new CubemapAttribute(CubemapAttribute.EnvironmentMap, cubemap)),
            VertexAttributes.Usage.Position);
    return model;
}
 

private void addMaterialTextureSwitch(String name, final Material material, long type){
	final PBRTextureAttribute attribute = material.get(PBRTextureAttribute.class, type);
	if(attribute != null){
		final TextButton bt = new TextButton(name, getSkin(), "toggle");
		bt.setChecked(true);
		materialTable.add(bt);
		
		Image pict = new Image(attribute.textureDescription.texture);
		
		pict.setScaling(Scaling.fit);
		
		materialTable.add(pict).size(64);
		
		materialTable.row();
		
		bt.addListener(new ChangeListener() {
			@Override
			public void changed(ChangeEvent event, Actor actor) {
				if(bt.isChecked()){
					material.set(attribute);
				}else{
					material.remove(attribute.type);
				}
			}
		});
	}
	
}
 

public void setMaterials(Array<Material> materials) 
{
	materialMap.clear();
	
	Array<String> names = new Array<String>();
	names.add("");
	for(Material e : materials){
		names.add(e.id);
		materialMap.put(e.id, e);
	}
	materialSelector.setItems();
	materialSelector.setItems(names);
}
 

public SceneSkybox(Cubemap cubemap){
	super();
	
	// create shader provider
	Config shaderConfig = new Config();
	String basePathName = "net/mgsx/gltf/shaders/skybox";
	shaderConfig.vertexShader = Gdx.files.classpath(basePathName + ".vs.glsl").readString();
	shaderConfig.fragmentShader = Gdx.files.classpath(basePathName + ".fs.glsl").readString();
	shaderProvider =  new DefaultShaderProvider(shaderConfig);
	
	// create box
	float boxScale = (float)(1.0 / Math.sqrt(2.0));
	boxModel = new ModelBuilder().createBox(boxScale, boxScale, boxScale, new Material(), VertexAttributes.Usage.Position);
	box = boxModel.nodes.first().parts.first().setRenderable(new Renderable());
	
	// assign environment
	Environment env = new Environment();
	env.set(new CubemapAttribute(CubemapAttribute.EnvironmentMap, cubemap));
	env.set(new ColorAttribute(ColorAttribute.AmbientLight, Color.WHITE));
	box.environment = env;
	
	// set hint to render last but before transparent ones
	box.userData = SceneRenderableSorter.Hints.OPAQUE_LAST;
	
	// set material options : preserve background depth
	box.material = new Material(ColorAttribute.createDiffuse(Color.WHITE));
	box.material.set(new DepthTestAttribute(false));
	
	
	// assign shader
	box.shader = shaderProvider.getShader(box);
}
 

@Override
public void loadMaterials(Array<GLTFMaterial> glMaterials) {
	if(glMaterials != null){
		for(int i=0 ; i<glMaterials.size ; i++){
			GLTFMaterial glMaterial = glMaterials.get(i);
			Material material = loadMaterial(glMaterial);
			materials.add(material);
		}
	}
}
 

private GLTFOcclusionTextureInfo occlusionTexture(PBRTextureAttribute a, Material material) {
	GLTFOcclusionTextureInfo ti = new GLTFOcclusionTextureInfo();
	ti.strength = material.get(PBRFloatAttribute.class, PBRFloatAttribute.OcclusionStrength).value;
	ti.texCoord = a.uvIndex;
	ti.index = getTexture(a);
	return ti;
}