Shader: please help me add transparency to this shader.

I got this shader by following a tutorial, and I can't for the life of me figure out how to add transparency. I am new to shaders and don't understand anything.yet. (heres the tutorial)

Code (CSharp):

1. Shader "Custom/Stencil/Diffuse EqualOne"
2. {
3.  
4. Properties
5. {
6.     _Color ("Main Color", Color) = (1,1,1,1)
7.     _MainTex ("Base (RGB)", 2D) = "white" {}
8. }
9.  
10. SubShader
11. {
12.     Tags { "RenderType"="Opaque" "Queue"="Geometry" }
13.     LOD 200
14.  
15.     Stencil
16.     {
17.         Ref 1
18.         Comp equal
19.         Pass keep
20.     }
21.  
22.     CGPROGRAM
23.     #pragma surface surf Lambert
24.  
25.     sampler2D _MainTex;
26.     fixed4 _Color;
27.  
28.     struct Input
29.     {
30.         float2 uv_MainTex;
31.     };
32.  
33.     void surf (Input IN, inout SurfaceOutput o)
34.     {
35.         fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
36.         o.Albedo = c.rgb;
37.         o.Alpha = c.a;
38.     }
39.    
40.     ENDCG
41. }
42.  
43. Fallback "VertexLit"
44. }
45.  

 

The alpha parameter, RenderType and Queue tags documentation is most likely what you're missing. Having set up these things properly, allows you to control the pixels' transparency using o.Alpha.

PS: A gentle introduction to shaders in Unity3D
http://www.alanzucconi.com/2015/06/10/a-gentle-introduction-to-shaders-in-unity3d/

 

Thank you very much. I will read through all this when i get home from work today.

 

Got it working, Thank you very much!