Outline Shader in Unity3d - unity3d

Question

I'm trying to configure this shader I got from the net to have a white outline not a black one. but the "_OutlineColor ("Outline Color", Color) = (1,1,1,1)" doesnt work.
I'm new to unity and how things work in it so I hope you can help me.
here is the complete shader:
Shader "Outlined/Diffuse" {
Properties {
_Color ("Main Color", Color) = (0,0,0,0)
_OutlineColor ("Outline Color", Color) = (1,1,1,1)
_Outline ("Outline width", Range (.002, 0.03)) = 5
_MainTex ("Base (RGB)", 2D) = "white" { }
}
CGINCLUDE
#include "UnityCG.cginc"
struct appdata {
float4 vertex : POSITION;
float3 normal : NORMAL;
};
struct v2f {
float4 pos : POSITION;
float4 color : COLOR;
};
uniform float _Outline;
uniform float4 _OutlineColor;
v2f vert(appdata v) {
// just make a copy of incoming vertex data but scaled according to normal direction
v2f o;
o.pos = mul(UNITY_MATRIX_MVP, v.vertex);
float3 norm = mul ((float3x3)UNITY_MATRIX_IT_MV, v.normal);
float2 offset = TransformViewToProjection(norm.xy);
o.pos.xy += offset * o.pos.z * _Outline;
o.color = _OutlineColor;
return o;
}
ENDCG
SubShader {
//Tags {"Queue" = "Geometry+100" }
CGPROGRAM
#pragma surface surf Lambert
sampler2D _MainTex;
fixed4 _Color;
struct Input {
float2 uv_MainTex;
};
void surf (Input IN, inout SurfaceOutput o) {
fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
o.Albedo = c.rgb;
o.Alpha = c.a;
}
ENDCG
// note that a vertex shader is specified here but its using the one above
Pass {
Name "OUTLINE"
Tags { "LightMode" = "Always" }
Cull Front
ZWrite On
ColorMask RGB
Blend SrcAlpha OneMinusSrcAlpha
//Offset 50,50
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
half4 frag(v2f i) :COLOR { return i.color; }
ENDCG
}
}
SubShader {
CGPROGRAM
#pragma surface surf Lambert
sampler2D _MainTex;
fixed4 _Color;
struct Input {
float2 uv_MainTex;
};
void surf (Input IN, inout SurfaceOutput o) {
fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
o.Albedo = c.rgb;
o.Alpha = c.a;
}
ENDCG
Pass {
Name "OUTLINE"
Tags { "LightMode" = "Always" }
Cull Front
ZWrite On
ColorMask RGB
Blend SrcAlpha OneMinusSrcAlpha
CGPROGRAM
#pragma vertex vert
#pragma exclude_renderers gles xbox360 ps3
ENDCG
SetTexture [_MainTex] { combine primary }
}
}
Fallback "Diffuse"
}

Answer 1

The "(1,1,1,1)" you are assigning to "_OutlineColor" describes a default value. That value is taken into consideration when you create new material that utilises that shader (here "Outlined/Diffuse"). Just create new material and assign to it your shader. You will notice that the Outline color this time will be white. Also you can simply select your material in the Editor and change the outline colour via inspector window.
As for your problem - probably you've created a new material combined with the shader you describe, BEFORE you made a change in the shader's body from black (0,0,0,1) to white (1,1,1,1) colour (I recognize the body of the shader, so I assume the black color). And what that means is that the default black colour has already been assigned to the material. If you want to change the colour, as I wrote above, do it on the material through the Editor's inspector.