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Question by michael 4 · Oct 05, 2011 at 07:48 PM · shader

Whats a good resource for shader code?

Whats a good resource to read up on if you want to code custom shaders?

Or more specifically, Im working on a custom Detail texture shader that so far can support 2 normal maps.

I also want to be able to designate a specular map as well, I dont know what im really doing though, Im just mixing and matching code from various shaders to try to combine effects.

     Shader "Detail - DiffNorm" {
 Properties {
     _Color ("Main Color", Color) = (1,1,1,1)
     _MainTex ("Base (RGB)", 2D) = "white" {}
     _Detail ("Detail (RGB)", 2D) = "gray" {}
     _BumpMap ("Normalmap", 2D) = "bump" {}
     _DBumpMap ("Detail Normalmap", 2D) = "bump" {}
 }
 
 SubShader {
     Tags { "RenderType"="Opaque" }
     LOD 250
     
 CGPROGRAM
 #pragma surface surf Lambert
 
 sampler2D _MainTex;
 sampler2D _Detail;
 sampler2D _BumpMap;
 sampler2D _DBumpMap;
 fixed4 _Color;
 
 
 struct Input {
     float2 uv_MainTex;
     float2 uv_Detail;
     float2 uv_BumpMap;
     float2 uv_DBumpMap;
 };
 
 void surf (Input IN, inout SurfaceOutput o) {
     fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
     c.rgb *= tex2D(_Detail,IN.uv_Detail).rgb*2;    
     o.Albedo = c.rgb;
     o.Alpha = c.a;
     o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap)) * UnpackNormal(tex2D(_DBumpMap, IN.uv_DBumpMap));
 }
 ENDCG
 }
 
 Fallback "Diffuse"
 }
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