Ok so basically I was fishing around on the forums for a diffuse shader which had the specular map slot separate (this is because I use GIMP and just can’t find a way to put the specular map in the alpha slot, I’ve spent hours trying, I know photoshop does it easy though). I did find this excellent shader someone very kindly posted (sorry to that person though because I didn’t catch their username!), however I was wondering if anyone knew how to modify this so that the shader doesn’t use a normal map? I ask this because Unity is telling me it’s bad for optimisation if I have that slot but don’t use it?
Shader "Bumped ColoredSpecular" {
Properties {
_Color ("Main Color", Color) = (1,1,1,1)
_SpecColor ("Specular Color", Color) = (0.5, 0.5, 0.5, 1)
_Shininess ("Shininess", Range (0.03, 1)) = 0.078125
_MainTex ("Base (RGB) Gloss (A)", 2D) = "white" {}
_BumpMap ("Normalmap", 2D) = "bump" {}
_SpecTex ("Spec (RGB)", 2D) = "white" {}
}
SubShader {
Tags { "RenderType"="Opaque" }
LOD 400
CGPROGRAM
#pragma surface surf BlinnPhong
sampler2D _MainTex;
sampler2D _BumpMap;
sampler2D _SpecTex;
float4 _Color;
//float4 _SpecColor;
float _Shininess;
struct Input {
float2 uv_MainTex;
float2 uv_BumpMap;
};
void surf (Input IN, inout SurfaceOutput o) {
half4 tex = tex2D(_MainTex, IN.uv_MainTex);
half4 spectex = tex2D(_SpecTex, IN.uv_MainTex);
_SpecColor = spectex;
o.Albedo = tex.rgb * _Color.rgb;
o.Gloss = tex.a;
o.Alpha = tex.a * _Color.a;
o.Specular = _Shininess;
o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap));
}
ENDCG
}
FallBack "Specular"
}
