Shadowed.shader

Shader "Unlit/Shadowed"
{
    SubShader
    {
        Pass
        {
            Tags { "LightMode"="Always" }
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #pragma shader_feature SHADOWS_SCREEN
            #include "UnityCG.cginc"
            #include "AutoLight.cginc"

            struct appdata
            {
                float4 vertex : POSITION;
            };

            struct v2f
            {
                float4 pos : SV_POSITION;
                SHADOW_COORDS(1)
            };

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

            fixed4 frag (v2f i) : SV_Target
            {
                return SHADOW_ATTENUATION(i);
            }
            ENDCG
        }

        // Must be present to receive shadows
        Pass
        {
            Tags {"LightMode" = "ShadowCaster"}
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #include "UnityCG.cginc"

            struct appdata {
                float4 vertex : POSITION;
                float3 normal : NORMAL;
            };

            struct v2f {
                float4 pos : SV_POSITION;
            };

            v2f vert (appdata v) {
                v2f o;
                TRANSFER_SHADOW_CASTER_NORMALOFFSET(o)
                return o;
            }

            float4 frag (v2f i) : SV_Target {
                return 0;
            }
            ENDCG
        }
    }
}