Shader "Hidden/Griffin/UnlitChannelMask"
{
    Properties
    {
        _MainTex ("Texture", 2D) = "white" {}
		_Mask ("Mask", Vector) = (1,1,1,1)
    }
    SubShader
    {
        Tags { "RenderType"="Transparent" }
        LOD 100
		ZTest Always
		ZWrite Off

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag

            #include "UnityCG.cginc"

            struct appdata
            {
                float4 vertex : POSITION;
                float2 uv : TEXCOORD0;
            };

            struct v2f
            {
                float2 uv : TEXCOORD0;
                float4 vertex : SV_POSITION;
            };

            sampler2D _MainTex;
            float4 _MainTex_ST;
			float4 _Mask;

            v2f vert (appdata v)
            {
                v2f o;
                o.vertex = UnityObjectToClipPos(v.vertex);
                o.uv = TRANSFORM_TEX(v.uv, _MainTex);
                return o;
            }

            fixed4 frag (v2f i) : SV_Target
            {
                fixed4 col = tex2D(_MainTex, i.uv);
				col = float4(col.x*_Mask.x, col.y*_Mask.y, col.z*_Mask.z, col.w*_Mask.w);
                return col;
            }
            ENDCG
        }
    }
}