How do I add transparency in this shader??

hello

can anyone help me out on this shader, I would like to add transparency for this curve shader

Code (CSharp):

1. Shader "Custom/WorldCurve" {
2.     Properties {
3.       _MainTex("Base (RGB) Alpha (A)", 2D) = "white"
4.   }
5.     SubShader {
6.         Tags { "RenderType"="Opaque" }
7.         Pass
8.         {
9.             Lighting Off
10.  
11.             CGPROGRAM
12.             #pragma vertex vert
13.             #pragma fragment frag
14.             #include "UnityCG.cginc"
15.  
16.             sampler2D _MainTex;      
17.             float _CurvatureY;
18.             float _CurvatureX;
19.             float _Dist;
20.             uniform float4 _MainTex_ST;
21.            
22.             struct v2f {
23.                 float4 pos : SV_POSITION;
24.                 float2 uv : TEXCOORD0;
25.             };
26.  
27.             v2f vert (appdata_base v)
28.             {
29.                 v2f o;
30.                 float4 vPos = mul (UNITY_MATRIX_MV, v.vertex);
31.                 float zOff = vPos.z/_Dist;
32.                 vPos += float4( (zOff * zOff) * - _CurvatureX, (zOff * zOff) * - _CurvatureY, 0.0f, 0.0f );
33.                 o.pos = mul (UNITY_MATRIX_P, vPos);
34.                 o.uv = TRANSFORM_TEX(v.texcoord, _MainTex);
35.                 return o;
36.             }
37.  
38.             half4 frag (v2f i) : COLOR
39.             {
40.               return tex2D(_MainTex, i.uv);
41.             }
42.             ENDCG
43.         }
44.     }
45.     //FallBack "Mobil/Unlit"
46. }

Thank you.

 

https://docs.unity3d.com/Manual/SL-Blend.html

Add the type of transparent blending you want above your CGPROGRAM, and make sure you're setting your return color's alpha in the fragment program. And change your RenderType and Queue to Transparent (you'll see examples on that page)