Shader "Zhanyou/CharacterRenderLine" {
	Properties {
		_MainTex ("Base (RGB)", 2D) = "white" {}
		// 角色材质颜色，乘法运算
		_Color("Blend Color", Color) = (1, 1, 1, 1)
		_AddColor("Additive Color", Color) = (0, 0, 0, 1)
		_LightDir("Light Dir", Vector) = (0, 0, 1,0)
	    _LightColor("Light Color", Color) = (1, 1, 1, 1)
	}

	SubShader {
		Tags { "Queue" = "AlphaTest+10" "RenderType"="Opaque" }

		Pass {
			CGPROGRAM

			#include "UnityCG.cginc"
			#pragma vertex vert
			#pragma fragment frag
			
			struct v2f {
				float4 pos : SV_POSITION;
				float3 normal:NORMAL;
				float2 texcoord : TEXCOORD0;
			};
	
			sampler2D _MainTex;
			float4 _MainTex_ST;
			float4 _Color;
			float4 _AddColor;
			float4 _LightDir;
			float4 _LightColor;
			

			v2f vert (appdata_full v) 
			{
				v2f o;
				UNITY_INITIALIZE_OUTPUT(v2f, o);
				o.pos = UnityObjectToClipPos(v.vertex);
				o.texcoord = TRANSFORM_TEX(v.texcoord, _MainTex); 
				o.normal = normalize(v.normal);
				return o;
			}
	
			fixed4 frag(v2f i) : SV_TARGET
			{
				float3 lightDir = normalize(_LightDir.xyz);
				float d = dot(i.normal, lightDir);
				fixed4 col;
				col = tex2D(_MainTex, i.texcoord);
				col.rgb *= _Color.rgb;
				col.rgb += max(0, d)*_LightColor.rgb;
				half grow = Luminance(col.rgb);
				col = float4(grow, grow, grow, col.a);
				col.rgb += _AddColor;
				return col;
			}
			ENDCG
		}
	}
	Fallback "Unlit/Texture"
}