Help with custom shader (2D)

As start i want to say i have no experience with writing shaders.
Hi all. I preparing for making 2d game and i need to help with shader. From http://www.6502b.com/Unity_3D_Normal_Map_Sprites.html i copy-pasted sprite shader what alows me using normal maps (code below). But i need to make it capable of using emission maps too. Simple emission maps what are used in standard shader( I guess i can't simply copy-paste emission code from 3d shader to 2d shader ) is enough. Can someone help me ?

Code (CSharp):

1. Shader "Sprites/Normal Map Sprite"
2. {
3.     Properties
4.     {
5.         [PerRendererData] _MainTex ("Sprite Texture", 2D) = "white" {}
6.         _Color ("Tint", Color) = (1,1,1,1)
7.         _BumpMap ("Normalmap", 2D) = "bump" {}
8.         _BumpIntensity ("NormalMap Intensity", Range (-1, 2)) = 1
9.         _BumpIntensity ("NormalMap Intensity", Float) = 1
10.         [MaterialToggle] PixelSnap ("Pixel snap", Float) = 0
11.         _Cutoff ("Alpha Cutoff", Range (0,1)) = 0.5
12.     }
13.     SubShader
14.     {
15.         Tags
16.         {
17.             "Queue"="AlphaTest"
18.             "IgnoreProjector"="True"
19.             "RenderType"="TransparentCutOut"
20.             "PreviewType"="Plane"
21.             "CanUseSpriteAtlas"="True"
22.         }
23.         LOD 300
24.         Cull Off
25.         Lighting On
26.         ZWrite On
27.         Fog { Mode Off }
28.         CGPROGRAM
29.         #pragma target 3.0
30.         #pragma surface surf Lambert alpha vertex:vert  alphatest:_Cutoff fullforwardshadows
31.         #pragma multi_compile DUMMY PIXELSNAP_ON
32.         #pragma exclude_renderers flash
33.         sampler2D _MainTex;
34.         sampler2D _BumpMap;
35.         fixed _BumpIntensity;
36.        
37.         fixed4 _Color;
38.         struct Input
39.         {
40.             float2 uv_MainTex;
41.             float2 uv_BumpMap;
42.             fixed4 color;
43.         };
44.        
45.         void vert (inout appdata_full v, out Input o)
46.         {
47.             #if defined(PIXELSNAP_ON) && !defined(SHADER_API_FLASH)
48.             v.vertex = UnityPixelSnap (v.vertex);
49.             #endif
50.             v.normal = float3(0,0,-1);
51.             v.tangent =  float4(1, 0, 0, 1);
52.             UNITY_INITIALIZE_OUTPUT(Input, o);
53.             o.color = _Color;
54.         }
55.         void surf (Input IN, inout SurfaceOutput o)
56.         {
57.             fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * IN.color;
58.             o.Albedo = c.rgb;
59.             o.Alpha = c.a;
60.             o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap));
61.             _BumpIntensity = 1 / _BumpIntensity;
62.             o.Normal.z = o.Normal.z * _BumpIntensity;
63.             o.Normal = normalize((half3)o.Normal);
64.         }
65.         ENDCG
66.     }
67. Fallback "Transparent/Cutout/Diffuse"
68. }

 

You should be able to add that part quite easily. Just sample an additional texture and store it in o.Emission.

 

Thanks for reply. As i said i have no experience with writing shaders. Do you have idea where i can lern basics ?

 

Wait a sec. can i use standart shader for sprites ?

 

https://unity3d.com/learn/tutorials/topics/graphics/gentle-introduction-shaders