switching texture dependens on props

[kyohei-23]

I want to switch textures based on props passed from the parent component, but it doesn't work!

const Loader = new TextureLoader()

const textures = [
    (()=>Loader.load('URL to texture source 01'))(),
    (()=>Loader.load('URL to texture source 02'))(),
    (()=>Loader.load('URL to texture source 03'))(),
]

export const Plane:FC<MeshProps & { index: number }> =  props =>{
    const { index } = props

    const textureRef = useRef<ShaderMaterial>(null!)

    const uniform = {
        u_time: { value: 0.0 },
        u_mouse: { value: new Vector2(0, 0) },
        u_dist: { value: 0.0 },
        u_texture: { value: textures.at(index) }
    }

    const size = useThree(({size})=>size)
    
    const center = {
        x: size.width / 2,
        y: size.height / 2
    }

    useEffect(()=>{
        window.addEventListener('mousemove', e=>{
            uniform.u_dist.value = e.movementY * .001
            const distX = ( e.clientX - center.x ) / center.x
            const distY = ( e.clientY - center.y ) * -1 / center.y
            uniform.u_mouse.value = new Vector2( distX, distY)           
        })
    },[])

    useEffect(()=>{
        textureRef.current.needsUpdate = true
    },[index])


    return (
        <mesh
            {...props}
        >
            <planeGeometry
                args={[1.618 * 3, 1 * 3, 16, 16]}
            />
            <shaderMaterial
                ref={ textureRef }
                uniforms={ uniform }
                vertexShader={ vertex }
                fragmentShader={ fragment }
            />
        </mesh>
    )
}

I cheked console.log(uniforms.u_texture.value) inside a useEffect which dependens on props , it displays swiched value. However, the actual texture on the screen was not switched.

And the following code confirms that switching textures works.

useEffect(()=>{
    let counter = 0
    setInterval(()=>{
        uniforms.u_texture.value = textures.at(++counter % 3)
    },1000)
},[])

What is the difference between these?