InputStream is = new FileInputStream("files/nu3a.png");
N3JDKImageLoader loader = new N3JDKImageLoader(is);
N3Texture2D texture = new N3Texture2D(scene, "textura1");
texture.genTexture(loader, render);
material.addTexture(texture);
material.setAmbientColor(new N3ColorRGBA(1, 1, 1));
material.setDiffuseColor(new N3ColorRGBA(1, 1, 1));
material.setSpecularColor(new N3ColorRGBA(0.2f, 0.2f, 0.2f), 0.5f);
material.applyMaterial(true);