Shader "AlignedGames/ToonUnlit" 

{

    Properties {
        _TextureMap ("Texture", 2D) = "" {}
        _TileAmount ("Scale Multiplier", float) = 1
        _ShadowBrightness ("Shadow Brightness", Range(0, 1)) = 0
        _Color ("Main Color", Color) = (1, 1, 1, 1)
    }

    SubShader {
        Pass {
            Tags {"LightMode" = "ForwardBase"}
            CGPROGRAM
            #pragma vertex VSMain
            #pragma fragment PSMain
            #pragma multi_compile_fwdbase
#include "AutoLight.cginc"
         
sampler2D _TextureMap;
float _TileAmount;
float _ShadowBrightness;
fixed4 _Color;

struct SHADERDATA {
    float4 position : SV_POSITION;
    float2 uv : TEXCOORD0;
    float4 _ShadowCoord : TEXCOORD1;
};

float4 ComputeScreenPos(float4 p) {
    float4 o = p * 0.5;
    return float4(float2(o.x, o.y * _ProjectionParams.x) + o.w, p.zw);
}

SHADERDATA VSMain(float4 vertex : POSITION, float2 uv : TEXCOORD0) {
    SHADERDATA vs;
    vs.position = UnityObjectToClipPos(vertex);
    vs.uv = uv;
    vs._ShadowCoord = ComputeScreenPos(vs.position);
    return vs;
}

fixed4 PSMain(SHADERDATA ps) : SV_TARGET {
    fixed4 col = tex2D(_TextureMap, ps.uv * _TileAmount);
    return lerp(col * float4(_ShadowBrightness, _ShadowBrightness, _ShadowBrightness, 1), col, step(0.5, SHADOW_ATTENUATION(ps))) * _Color;
}
         
            ENDCG
        }
     
        Pass {
            Tags{ "LightMode" = "ShadowCaster" }
            CGPROGRAM
            #pragma vertex VSMain
            #pragma fragment PSMain

            float4 VSMain(float4 vertex : POSITION) : SV_POSITION {
                return UnityObjectToClipPos(vertex);
            }

            float4 PSMain(float4 vertex : SV_POSITION) : SV_TARGET {
                return 0;
            }
         
            ENDCG
        }
    }
}