SepiaVF.shader

Shader "Custom/SepiaVF"{
	Properties{
		_MainTex("Main", 2D) = "black"{}
	}

	SubShader{
		Lighting Off

		Pass{
			CGPROGRAM
#pragma vertex vert_img
#pragma fragment frag
#include "UnityCG.cginc"

			sampler2D _MainTex;

			float4 frag(v2f_img i) :COLOR{
				float4 tex = tex2D(_MainTex, i.uv);
				float4 c;
				c.r = tex.r*0.393 + tex.g*0.769 + tex.b*0.189;
				c.g = tex.r*0.349 + tex.g*0.686 + tex.b*0.168;
				c.b = tex.r*0.272 + tex.g*0.534 + tex.b*0.131;
				return c;
			}
			ENDCG
		}
	}
}