Surface Shader Unlit (Unity 5)

Hi,

I have this simple Unlit surface shader for Unity 5. You may ask ¿Why do you need a surface shader for an unlit shader? The answer is because I want a simple unlit/lightmap with texture but I need that the color texture is taken into account for light bounces.

Here is the shader:

Code (CSharp):

1. Shader "Unlit/Unlit Surface Shaders (Lightmap)" {
2. Properties {
3.  
4.     _MainTex ("Base (RGB)", 2D) = "white" {}
5.  
6.    
7. }
8.  
9. SubShader {
10.     Tags { "RenderType"="Opaque" "Queue" = "Geometry"}
11.    
12. CGPROGRAM
13.  
14.  
15. #pragma surface surf NoLighting  noambient
16.  
17.     sampler2D _MainTex;
18.  
19.     struct Input {
20.         half2 uv_MainTex;
21.    
22.     };
23.          
24.      fixed4 LightingNoLighting(SurfaceOutput s, fixed3 lightDir, fixed atten)
25.      {
26.          fixed4 c;
27.          c.rgb = s.Albedo;
28.          c.a = s.Alpha;
29.          return c;
30.      }
31.  
32.     void surf (Input IN, inout SurfaceOutput o)
33.     {  
34.         o.Albedo = tex2D(_MainTex, IN.uv_MainTex);
35.        
36.     }
37. ENDCG
38. }
39.  
40. Fallback "Mobile/VertexLit"
41. }

The results its different if I check or uncheck realtime GI, so some light is being captured by the shader. Any clues?

 

Try to add _Color

 

Sorry I don't understand where to add _Color and what this is this going to do. Could you explain please?

 

Create a Color property and then multiply it with the .rgb value in the o.Albedo slot.