Mask Shader

Hi Guys. Can somebody help me turn this into a Sprite Mask.

My Shader creates the black 8bit Dithering effect.

Code (CSharp):

1. //
2.  
3. Shader "Deon/8bitImage"
4. {
5.     Properties
6.     {
7.         _MainTex("", 2D) = "" {}
8.         _DitherTex("", 2D) = "" {}
9.         _Color0("Dark", Color) = (0, 0, 0)
10.         _Color1("Light", Color) = (1, 1, 1)
11.         [Gamma] _Opacity("", Range(0, 1)) = 1
12.         _Scale ("Scale", Range(0, 10)) = 4
13.        _Cutoff ("Alpha cutoff", Range(0,1)) = 0.5
14.     }
15.  
16.     CGINCLUDE
17.  
18.     #include "UnityCG.cginc"
19.  
20.     sampler2D _MainTex;
21.     float2 _MainTex_TexelSize;
22.  
23.     sampler2D _DitherTex;
24.     float2 _DitherTex_TexelSize;
25.     fixed _Cutoff;
26.     half _Scale;
27.     half3 _Color0;
28.     half3 _Color1;
29.     half _Opacity;
30.  
31.     half4 frag(v2f_img i) : SV_Target
32.     {
33.         half4 source = tex2D(_MainTex, i.uv);
34.  
35.         // Dither pattern sample
36.         float2 dither_uv = i.uv * _DitherTex_TexelSize;
37.         dither_uv /= _MainTex_TexelSize * _Scale;
38.         half dither = tex2D(_DitherTex, dither_uv).a + 0.5 / 256;
39.        
40.  
41.         // Relative luminance in linear RGB space
42.     #ifdef UNITY_COLORSPACE_GAMMA
43.         half rlum = LinearRgbToLuminance(GammaToLinearSpace(saturate(source.rgb)));
44.     #else
45.         half rlum = LinearRgbToLuminance(source.rgb);
46.     #endif
47.  
48.         // Blending
49.         half3 rgb = rlum < dither ? _Color0 : _Color1;
50.         return half4(lerp(source.rgb, rgb, _Opacity), source.a);
51.         clip(source.a - _Cutoff);
52.     }
53.  
54.     ENDCG
55.  
56.     SubShader
57.     {
58.         Pass
59.         {
60.             ZTest Always Cull Off ZWrite Off
61.             CGPROGRAM
62.             #pragma multi_compile _ UNITY_COLORSPACE_GAMMA
63.             #pragma vertex vert_img
64.             #pragma fragment frag
65.             ENDCG
66.         }
67.     }
68. }
69.