Colored alpha-blended shader, always drawn on top

Hello there. I hate to ask a newbie question, but I never worked with shaders before (I'm excellent with scripting, though). I'm using the EZ GUI library to create the GUI for our game, and I'm trying to create a shader similar to Angry Bot's Cursor shader: mobile-efficient, alpha-blended shader that's always drawn on top. The only difference is that the shader takes in a color.

I'm trying to use this for text, and well, I need color on the text for the shader to be useful.

Thanks in advance!

 

Well, through experimentation, I got this. It seems to work...

Code (csharp):

1. Shader "Mobile/GUI (Colored)" {
2.     Properties {
3.         _MainTex ("Base", 2D) = "white" {}
4.         _MainColor ("Color", Color) = (1.0, 1.0, 1.0, 1.0)
5.     }
6.    
7.     CGINCLUDE
8.  
9.         #include "UnityCG.cginc"
10.  
11.         sampler2D _MainTex;
12.         fixed4 _MainColor;
13.        
14.         half4 _MainTex_ST;
15.                        
16.         struct v2f {
17.             half4 pos : SV_POSITION;
18.             half2 uv : TEXCOORD0;
19.             fixed4 vertexColor : COLOR;
20.         };
21.  
22.         v2f vert(appdata_full v) {
23.             v2f o;
24.            
25.             o.pos = mul (UNITY_MATRIX_MVP, v.vertex);  
26.             o.uv.xy = TRANSFORM_TEX(v.texcoord, _MainTex);
27.             o.vertexColor = v.color * _MainColor;
28.                    
29.             return o;
30.         }
31.        
32.         fixed4 frag( v2f i ) : COLOR { 
33.             return tex2D (_MainTex, i.uv.xy) * i.vertexColor;
34.         }
35.    
36.     ENDCG
37.    
38.     SubShader {
39.         Tags { "RenderType" = "Transparent" "Queue" = "Transparent+100"}
40.         Cull Off
41.         Lighting Off
42.         ZWrite Off
43.         ZTest Always
44.         Fog { Mode Off }
45.         Blend SrcAlpha OneMinusSrcAlpha
46.        
47.     Pass {
48.    
49.         CGPROGRAM
50.        
51.         #pragma vertex vert
52.         #pragma fragment frag
53.         #pragma fragmentoption ARB_precision_hint_fastest
54.        
55.         ENDCG
56.          
57.         }
58.                
59.     }
60.     FallBack Off
61. }

 

This is what I was lookin for, thx alot.

 

Thank you so much for publishing this great shader!

Kindest Greetings from Hungary
Zsolt

 

By the way I use this shader in a VR app as the target cross:
https://play.google.com/store/apps/details?id=com.ancientc.fractalflowvr&hl=en