Shader "Custom/NativeTexture" {
Properties {
    _MainTex ("Base (RGB)", 2DArray) = "black" {}
_Index ("Index", float) = 1
}   
SubShader {
    Pass {
    CGPROGRAM
    #pragma target 5.0
    #pragma only_renderers d3d11

    #pragma vertex vert_img
    #pragma fragment frag

    #include "UnityCG.cginc"
    float _Index;
    Texture2DArray _MainTex;
    SamplerState sampler_MainTex;
    fixed4 frag(v2f_img i) : SV_Target {
    return _MainTex.Sample(sampler_MainTex,float3(i.uv,_Index));
}
ENDCG
}
}
}