UNLIT with Shadows

Shader "Custom/UNLITwithShadows" {
Properties {
        _Color ("Main Color", Color) = (1,1,1,1)
        _MainTex ("Base (RGB)", 2D) = "white" {}
    }
    SubShader {
        Tags {"Queue" = "Geometry" "RenderType" = "Opaque"}

        Pass {
            Tags {"LightMode" = "ForwardBase"}
            CGPROGRAM
                #pragma vertex vert
                #pragma fragment frag
                #pragma multi_compile_fwdbase
                #pragma fragmentoption ARB_fog_exp2
                #pragma fragmentoption ARB_precision_hint_fastest

                #include "UnityCG.cginc"
                #include "AutoLight.cginc"

                struct v2f
                {
                    float4  pos         : SV_POSITION;
                    float2  uv          : TEXCOORD0;
                    LIGHTING_COORDS(1,2)
                };

                v2f vert (appdata_tan v)
                {
                    v2f o;

                    o.pos = mul( UNITY_MATRIX_MVP, v.vertex);
                    o.uv = v.texcoord.xy;
                    TRANSFER_VERTEX_TO_FRAGMENT(o);
                    return o;
                }

                sampler2D _MainTex;

                fixed4 frag(v2f i) : COLOR
                {
                    fixed atten = LIGHT_ATTENUATION(i); // Light attenuation + shadows.
                    //fixed atten = SHADOW_ATTENUATION(i); // Shadows ONLY.
                    return tex2D(_MainTex, i.uv) * atten;
                }
            ENDCG
        }

        Pass {
            Tags {"LightMode" = "ForwardAdd"}
            Blend One One
            CGPROGRAM
                #pragma vertex vert
                #pragma fragment frag
                #pragma multi_compile_fwdadd_fullshadows
                #pragma fragmentoption ARB_fog_exp2
                #pragma fragmentoption ARB_precision_hint_fastest

                #include "UnityCG.cginc"
                #include "AutoLight.cginc"

                struct v2f
                {
                    float4  pos         : SV_POSITION;
                    float2  uv          : TEXCOORD0;
                    LIGHTING_COORDS(1,2)
                };

                v2f vert (appdata_tan v)
                {
                    v2f o;

                    o.pos = mul( UNITY_MATRIX_MVP, v.vertex);
                    o.uv = v.texcoord.xy;
                    TRANSFER_VERTEX_TO_FRAGMENT(o);
                    return o;
                }

                sampler2D _MainTex;

                fixed4 frag(v2f i) : COLOR
                {
                    fixed atten = LIGHT_ATTENUATION(i); // Light attenuation + shadows.
                    //fixed atten = SHADOW_ATTENUATION(i); // Shadows ONLY.
                    return tex2D(_MainTex, i.uv) * atten * SHADOW_ATTENUATION(i);
                }
            ENDCG
        }
    }
    FallBack "VertexLit"
}