MinFt/Client/Assets/ABPackage/pkgShader/ImageGrayMask.shader

Shader "Game/ImageGreyMask"
{
    Properties
    {
        [PerRendererData] _MainTex("Sprite Texture", 2D) = "white" {}
        _Color("Tint", Color) = (1,1,1,1)

            //MASK SUPPORT ADD
            _StencilComp("Stencil Comparison", Float) = 8
            _Stencil("Stencil ID", Float) = 0
            _StencilOp("Stencil Operation", Float) = 0
            _StencilWriteMask("Stencil Write Mask", Float) = 255
            _StencilReadMask("Stencil Read Mask", Float) = 255
            _ColorMask("Color Mask", Float) = 15
            //MASK SUPPORT END

    }

        SubShader
        {
            Tags
         {
            "Queue" = "Transparent"
            "IgnoreProjector" = "True"
            "RenderType" = "Transparent"
            "PreviewType" = "Plane"
            "CanUseSpriteAtlas" = "True"
         }


            //MASK SUPPORT ADD
            Stencil
            {
                Ref[_Stencil]
                Comp[_StencilComp]
                Pass[_StencilOp]
                ReadMask[_StencilReadMask]
                WriteMask[_StencilWriteMask]
            }
            ColorMask[_ColorMask]
            //MASK SUPPORT END


         // Ô´rgba*Ô´a + ±³¾°rgba*(1-Ô´AÖµ)   
            Blend SrcAlpha OneMinusSrcAlpha


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

            struct appdata_t
        {
            float4 vertex   : POSITION;
            float4 color    : COLOR;
            float2 texcoord : TEXCOORD0;
        };

        struct v2f
        {
            float4 vertex   : SV_POSITION;
            fixed4 color : COLOR;
            half2 texcoord  : TEXCOORD0;
        };

        sampler2D _MainTex;
        fixed4 _Color;

        v2f vert(appdata_t IN)
        {
            v2f OUT;
            OUT.vertex = UnityObjectToClipPos(IN.vertex);
            OUT.texcoord = IN.texcoord;
    #ifdef UNITY_HALF_TEXEL_OFFSET     
            OUT.vertex.xy -= (_ScreenParams.zw - 1.0);
    #endif     
            OUT.color = IN.color * _Color;
            return OUT;
        }

        fixed4 frag(v2f IN) : SV_Target
        {
            half4 color = tex2D(_MainTex, IN.texcoord) * IN.color;
            float grey = dot(color.rgb, fixed3(0.22, 0.707, 0.071));
            return half4(grey,grey,grey,color.a);
        }
            ENDCG
        }
        }
}