Problem with BRDF Shader

Questions & Answers
1

Hi !
I wanted to make a BRDF shader but i ran into trouble .

Used tihs tutorial to make the shader : Youtube Tutorial Video

I wrote everything right in the shader but i get a error :

Program ‘SurfShaderInternalFunc’, expression left of . “Normal” is not a struct or array at line 30 .

And i can’t understand what is causing this error .

Here is the shader :

Shader "CTD/DemoBRDF" 
{
Properties 
{
	_MainTex ("Base (RGB)", 2D) = "white" {}
    _Ramp2D ("BRDF Ramp", 2D) = "gray" {}
}

SubShader 
{
	Tags { "RenderType"="Opaque" }
	LOD 200
	
	CGPROGRAM
	#pragma surface surf Ramp
    #pragma target 3.0

	sampler2D _MainTex;
    sampler2D _Ramp2D;

	struct Input 
    {
		float2 uv_MainTex;
	};

    half4 LightingRamp (SurfaceOutput s, half3 lightDir, half3 viewDir, half atten)
    {
           float NdotL = dot(s.Normal, lightDir);
           float NdotE = dot(s.Nornal, viewDir);

           //do diffuse wrap here
           float diff = (NdotL * 0.3) + 0.5;
           float2 brdfUV = float2(NdotE * .8, diff);
           float3 BRDF = tex2D(_Ramp2D, brdfUV.xy).rgb;

           float4 c;
           c.rgb = BRDF;//float3(diff,diff,diff);
           c.a = s.Alpha;
           return c;
     }

	 void surf (Input IN, inout SurfaceOutput o) 
     {
		 half4 c = float4(.5,.5,.5,1);//tex2D (_MainTex, IN.uv_MainTex);
		 o.Albedo = c.rgb;
		 o.Alpha = c.a;
	 }
	 ENDCG
 } 
 FallBack "Diffuse"
}

If someone can help me then i would really apreciate him .

Thanks in advance for the upcoming answers :slight_smile:

2

Farfarer on the forum solved my problem :slight_smile:

In line 30 it only needs Normal not Nornal :smiley:

It was a really noobish problem i know …