Shader help?

Questions & Answers
1

Hey everyone, my name is Tz and I have no knowledge on how to code shaders, I have a shader that I downloaded but I want to make it “Self Illuminated” but I don’t know how.

Here is the shader.

 Shader "Dif_Nor_Spec"
    {
    	Properties 
    	{
    _Diff_Color("_Diff_Color", Color) = (0.4701493,0.4385721,0.4385721,1)
    _Gloss("_Gloss", Range(0,1) ) = 0
    _Dif("_Dif", 2D) = "gray" {}
    _Nor("_Nor", 2D) = "bump" {}
    _Spec("_Spec", 2D) = "black" {}
    
    	}
    	
    	SubShader 
    	{
    		Tags
    		{
    "Queue"="Geometry"
    "IgnoreProjector"="False"
    "RenderType"="Opaque"
    
    		}
    
    		
    Cull Back
    ZWrite On
    ZTest LEqual
    ColorMask RGBA
    Fog{
    }
    
    
    		CGPROGRAM
    #pragma surface surf BlinnPhongEditor  vertex:vert
    #pragma target 2.0
    
    
    float4 _Diff_Color;
    float _Gloss;
    sampler2D _Dif;
    sampler2D _Nor;
    sampler2D _Spec;
    
    			struct EditorSurfaceOutput {
    				half3 Albedo;
    				half3 Normal;
    				half3 Emission;
    				half3 Gloss;
    				half Specular;
    				half Alpha;
    				half4 Custom;
    			};
    			
    			inline half4 LightingBlinnPhongEditor_PrePass (EditorSurfaceOutput s, half4 light)
    			{
    half3 spec = light.a * s.Gloss;
    half4 c;
    c.rgb = (s.Albedo * light.rgb + light.rgb * spec);
    c.a = s.Alpha;
    return c;
    
    			}
    
    			inline half4 LightingBlinnPhongEditor (EditorSurfaceOutput s, half3 lightDir, half3 viewDir, half atten)
    			{
    				half3 h = normalize (lightDir + viewDir);
    				
    				half diff = max (0, dot ( lightDir, s.Normal ));
    				
    				float nh = max (0, dot (s.Normal, h));
    				float spec = pow (nh, s.Specular*128.0);
    				
    				half4 res;
    				res.rgb = _LightColor0.rgb * diff;
    				res.w = spec * Luminance (_LightColor0.rgb);
    				res *= atten * 2.0;
    
    				return LightingBlinnPhongEditor_PrePass( s, res );
    			}
    			
    			struct Input {
    				float2 uv_Dif;
    float2 uv_Nor;
    float2 uv_Spec;
    
    			};
    
    			void vert (inout appdata_full v, out Input o) {
    float4 VertexOutputMaster0_0_NoInput = float4(0,0,0,0);
    float4 VertexOutputMaster0_1_NoInput = float4(0,0,0,0);
    float4 VertexOutputMaster0_2_NoInput = float4(0,0,0,0);
    float4 VertexOutputMaster0_3_NoInput = float4(0,0,0,0);
    
    
    			}
    			
    
    			void surf (Input IN, inout EditorSurfaceOutput o) {
    				o.Normal = float3(0.0,0.0,1.0);
    				o.Alpha = 1.0;
    				o.Albedo = 0.0;
    				o.Emission = 0.0;
    				o.Gloss = 0.0;
    				o.Specular = 0.0;
    				o.Custom = 0.0;
    				
    float4 Tex2D1=tex2D(_Dif,(IN.uv_Dif.xyxy).xy);
    float4 Multiply0=Tex2D1 * _Diff_Color;
    float4 Tex2D0=tex2D(_Nor,(IN.uv_Nor.xyxy).xy);
    float4 UnpackNormal0=float4(UnpackNormal(Tex2D0).xyz, 1.0);
    float4 Tex2D2=tex2D(_Spec,(IN.uv_Spec.xyxy).xy);
    float4 Master0_2_NoInput = float4(0,0,0,0);
    float4 Master0_5_NoInput = float4(1,1,1,1);
    float4 Master0_7_NoInput = float4(0,0,0,0);
    float4 Master0_6_NoInput = float4(1,1,1,1);
    o.Albedo = Multiply0;
    o.Normal = UnpackNormal0;
    o.Specular = _Gloss.xxxx;
    o.Gloss = Tex2D2;
    
    				o.Normal = normalize(o.Normal);
    			}
    		ENDCG
    	}
    	Fallback "Diffuse"
    }

So if anybody knows how to add “Self Illumination” to it, please say.
Thanks
Tz

2

Well to make your object “Self Illuminating”, you need to set the emission of your surface shader. Right now you’re setting the emission to 0.0 (o.Emission = 0.0;)

Either you want a seperate color for your emission, or you use a property you allready use.
The only thing you should change in your shader is change the line

o.Emission = 0.0;

to

o.Emission = _Diff_Color;

That is when you want to use your diffuse color for your emission. If you want to have seperate control over your emission, you should add a color value.

This should cover your question, please mark as answered, and if you’re having trouble adding a seperate color let me know, I’ll help you further if necessary.

Cheers :wink: