Texture2DArray from sequential images. script and shader

Tex2DArrayPlayer.shader

Shader "Unlit/Tex2DArrayPlayer"
{
    Properties
    {
		_Prop ("fps, Slices", Vector) = (84, 30, 0,0)
    }
    SubShader
    {
		Tags {"Queue" = "Overlay" "IgnoreProjector" = "True" "RenderType" = "Transparent"}
		LOD 100

		ZWrite Off
		Blend SrcAlpha OneMinusSrcAlpha

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag

            #include "UnityCG.cginc"

            struct appdata
            {
                float4 vertex : POSITION;
                float2 uv : TEXCOORD0;
            };

            struct v2f
            {
                float2 uv : TEXCOORD0;
                float4 vertex : SV_POSITION;
            };

			UNITY_DECLARE_TEX2DARRAY(_Tex);
			half4 _Prop;

            v2f vert (appdata v)
            {
                v2f o;
                o.vertex = UnityObjectToClipPos(v.vertex);
                o.uv = v.uv;
                return o;
            }

            half4 frag (v2f i) : SV_Target
            {

				int idx = (_Time.y * _Prop.x) % _Prop.y;
				half4 col = UNITY_SAMPLE_TEX2DARRAY(_Tex, float3(i.uv, idx));
                return col;
            }
            ENDCG
        }
    }
}

Texture2DArrayGenerator.cs

using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;

public class Texture2DArrayGenerator : MonoBehaviour
{
    public string tex2dsPath = "HitoGuidArray";
    public Texture2DArray tex2dArray;

    public Renderer[] targetRenderers;
    public string propName = "_MainTex";

    // Start is called before the first frame update
    void Start()
    {
        var tex2ds = Resources.LoadAll<Texture2D>(tex2dsPath);
        var w = tex2ds[0].width;
        var h = tex2ds[0].height;
        var d = tex2ds.Length;
        var format = tex2ds[0].format;
        tex2dArray = new Texture2DArray(w, h, d, format, 1 < tex2ds[0].mipmapCount);

        tex2ds = tex2ds.OrderBy(tex => tex.name).ToArray();
        for (var i = 0; i < d; i++)
            Graphics.CopyTexture(tex2ds[i], 0, tex2dArray, i);

        var mpb = new MaterialPropertyBlock();
        foreach(var r in targetRenderers)
        {
            r.GetPropertyBlock(mpb);
            mpb.SetTexture(propName, tex2dArray);
            r.SetPropertyBlock(mpb);
        }
    }
}