Help with custom shader (2D)

Unity Engine
1

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 6502b | Unity 3D Normal Map Sprites 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 ?

Shader "Sprites/Normal Map Sprite"
{
    Properties
    {
        [PerRendererData] _MainTex ("Sprite Texture", 2D) = "white" {}
        _Color ("Tint", Color) = (1,1,1,1)
        _BumpMap ("Normalmap", 2D) = "bump" {}
        _BumpIntensity ("NormalMap Intensity", Range (-1, 2)) = 1
        _BumpIntensity ("NormalMap Intensity", Float) = 1
        [MaterialToggle] PixelSnap ("Pixel snap", Float) = 0
        _Cutoff ("Alpha Cutoff", Range (0,1)) = 0.5
    }
    SubShader
    {
        Tags
        {
            "Queue"="AlphaTest"
            "IgnoreProjector"="True"
            "RenderType"="TransparentCutOut"
            "PreviewType"="Plane"
            "CanUseSpriteAtlas"="True"
        }
        LOD 300
        Cull Off
        Lighting On
        ZWrite On
        Fog { Mode Off }
        CGPROGRAM
        #pragma target 3.0
        #pragma surface surf Lambert alpha vertex:vert  alphatest:_Cutoff fullforwardshadows
        #pragma multi_compile DUMMY PIXELSNAP_ON
        #pragma exclude_renderers flash
        sampler2D _MainTex;
        sampler2D _BumpMap;
        fixed _BumpIntensity;
       
        fixed4 _Color;
        struct Input
        {
            float2 uv_MainTex;
            float2 uv_BumpMap;
            fixed4 color;
        };
       
        void vert (inout appdata_full v, out Input o)
        {
            #if defined(PIXELSNAP_ON) && !defined(SHADER_API_FLASH)
            v.vertex = UnityPixelSnap (v.vertex);
            #endif
            v.normal = float3(0,0,-1);
            v.tangent =  float4(1, 0, 0, 1);
            UNITY_INITIALIZE_OUTPUT(Input, o);
            o.color = _Color;
        }
        void surf (Input IN, inout SurfaceOutput o)
        {
            fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * IN.color;
            o.Albedo = c.rgb;
            o.Alpha = c.a;
            o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap));
            _BumpIntensity = 1 / _BumpIntensity;
            o.Normal.z = o.Normal.z * _BumpIntensity;
            o.Normal = normalize((half3)o.Normal);
        }
        ENDCG
    }
Fallback "Transparent/Cutout/Diffuse"
}
2

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

3

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

4

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

5

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