Diffuse (Channel1) + Alpha (Channel 2 ) + Specular (Channel 2 ) + Normal (Channel 1 )

[DiegoC]

Hi

Is there in Unity3D 3.1 version any shader with this option: Diffuse (Channel1) + Alpha (Channel 2 ) + Specular (Channel 2 ) + Normal (Channel 1 )?

Thanks

[Daniel-Brauer]

Perhaps you could explain this in more detail. And what do you mean by “channel”?

[DiegoC]

The Map Channel ; Mapping Coordinates or UV Mapping . In 3DSMax Diffuse is normally Channel 1 and Lightmapping in Channel 2

Thanks

[Daniel-Brauer]

Ah. There are no built-in shaders that do what you want. However, you can make a surface shader that does this quite easily.

[DiegoC]

I don’t know create shader in Unity3d. Can you help me,please?

[Daniel-Brauer]

Read the manual, look at examples, look at the built-in shaders and create it yourself.

[bigkahuna]

Or try the Strumpy Shader Editor.

[DiegoC]

Thanks.

How change the alpha channel in this shader, please?

Shader “Transparent/Bumped Specular Alpha Channel 2” {
Properties {
_Color (“Main Color”, Color) = (1,1,1,1)
_SpecColor (“Specular Color”, Color) = (0.5, 0.5, 0.5, 0)
_Shininess (“Shininess”, Range (0.01, 1)) = 0.078125
_MainTex (“Base (RGB) TransGloss (A)”, 2D) = “white” {}
_BumpMap (“Normalmap”, 2D) = “bump” {}
}

SubShader {
Tags {“Queue”=“Transparent” “IgnoreProjector”=“True” “RenderType”=“Transparent”}
LOD 400

CGPROGRAM
#pragma surface surf BlinnPhong alpha

sampler2D _MainTex;
sampler2D _BumpMap;
float4 _Color;
float _Shininess;

struct Input {
float2 uv_MainTex;
float2 uv_BumpMap;
};

void surf (Input IN, inout SurfaceOutput o) {
half4 tex = tex2D(_MainTex, IN.uv_MainTex);
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 “Transparent/VertexLit”
}