Multiple Texture Maps
Add additional texture maps for detailed surface information:
// Add additional texture maps
material.bumpTexture = new BABYLON.Texture("textures/woodNormal.png", scene); // Normal map
material.ambientTexture = new BABYLON.Texture("textures/woodAO.jpg", scene); // Ambient occlusion
material.specularTexture = new BABYLON.Texture("textures/woodSpecular.jpg", scene); // Specular map
// Adjust normal map intensity
material.bumpTexture.level = 1.5; // Intensity of normal mapping