We have a scene that we've baked shadows / lighting into the textures, how do we create a "Self Illuminated" texture so that the babylon lights don't affect these textures?   I've created a StandardMaterial, set ambient and diffuse colors to white and that didn't create the effect I'm after: var mat = new BABYLON.StandardMaterial(meshes[i].name, this.scene);mat.diffuseTexture = new BABYLON.Texture("meshes/demoRoom/textures/Room_COLOR.png", this.scene);mat.specularColor = new BABYLON.Color3(0, 0,