Merge two Unity shaders - unity3d

Question

I'm looking to make a toon shader that has both the cell shading effect from one shader as well as an outline from another shader.
Is there a relatively straightforward way to combine these two?
The outline references a simple flat shader using "UsePass" is there a way I could reference the cell shaded shader instead?
This is the outline shader:
Shader "TSF/BaseOutline1"
{
Properties
{
[MaterialToggle(_TEX_ON)] _DetailTex ("Enable Detail texture", Float) = 0 //1
_MainTex ("Detail", 2D) = "white" {} //2
_ToonShade ("Shade", 2D) = "white" {} //3
[MaterialToggle(_COLOR_ON)] _TintColor ("Enable Color Tint", Float) = 0 //4
_Color ("Base Color", Color) = (1,1,1,1) //5
[MaterialToggle(_VCOLOR_ON)] _VertexColor ("Enable Vertex Color", Float) = 0//6
_Brightness ("Brightness 1 = neutral", Float) = 1.0 //7
_OutlineColor ("Outline Color", Color) = (0.5,0.5,0.5,1.0) //10
_Outline ("Outline width", Float) = 0.01 //11
}
SubShader
{
Tags { "RenderType"="Opaque" }
LOD 250
Lighting Off
Fog { Mode Off }
UsePass "TSF/Base1/BASE"
Pass
{
Cull Front
ZWrite On
CGPROGRAM
#include "UnityCG.cginc"
#pragma fragmentoption ARB_precision_hint_fastest
#pragma glsl_no_auto_normalization
#pragma vertex vert
#pragma fragment frag
struct appdata_t
{
float4 vertex : POSITION;
float3 normal : NORMAL;
};
struct v2f
{
float4 pos : SV_POSITION;
};
fixed _Outline;
v2f vert (appdata_t v)
{
v2f o;
o.pos = v.vertex;
o.pos.xyz += normalize(v.normal.xyz) *_Outline*0.01;
o.pos = UnityObjectToClipPos(o.pos);
return o;
}
fixed4 _OutlineColor;
fixed4 frag(v2f i) :COLOR
{
return _OutlineColor;
}
ENDCG
}
}
Fallback "Legacy Shaders/Diffuse"
}
And the cell shaded shader is here:
Shader "Toon/Cutoff"
{
Properties
{
_Color("Color(RGBA)", Color) = (1,1,1,1)
_MainTex("Texture", 2D) = "white" {}
_Shininess ("Shininess(0.0:)", Float) = 1.0
_ShadowThreshold ("Shadow Threshold(0.0:1.0)", Float) = 0.5
_ShadowColor ("Shadow Color(RGBA)", Color) = (0,0,0,0.5)
_ShadowSharpness ("Shadow Sharpness(0.0:)", Float) = 100
_Cutoff ("Alpha cutoff", Range(0,1)) = 0.9
}
SubShader
{
// Settings
Tags {"Queue" = "Transparent" "IgnoreProjector"="False" "RenderType" = "TransparentCutout"}
// Surface Shader Pass ( Front )
Cull Back
ZWrite On
AlphaTest Greater 0.9
//AlphaTest Equal 1
Blend SrcAlpha OneMinusSrcAlpha
CGPROGRAM
#pragma surface surf Toon alphatest:_Cutoff vertex:vert
// Toon Surface Shader for Unity
// File : ToonSurface.cginc
// Title : Toon Surface Shader with Alpha
// Language : Cg Language
// Include : ToonSurface.cginc
/*
How To Use :
CGPROGRAM
#pragma surface surf Toon
#include "ToonSurface.cginc"
ENDCG
*/
float4 _Color;
sampler2D _MainTex;
float _ShadowThreshold;
float4 _ShadowColor;
float _ShadowSharpness;
float _Shininess;
struct ToonSurfaceOutput
{
half3 Albedo;
half3 Normal;
half3 Emission;
half3 Gloss;
half Specular;
half Alpha;
half4 Color;
};
inline half4 LightingToon (ToonSurfaceOutput s, half3 lightDir, half3 viewDir, half atten)
{
//Lighting paramater
float4 lightColor = _LightColor0 * atten;
float lightStrength = dot(lightDir, s.Normal) * 0.5 + 0.5;
//ToonMapping
half shadowRate = abs( max( -1, ( min( lightStrength, _ShadowThreshold ) -_ShadowThreshold)*_ShadowSharpness ) )*_ShadowColor.a;
float4 toon = float4(1,1,1,1) * (1-shadowRate) + _ShadowColor *shadowRate;
//Output
//float4 color = saturate( _Color * (lightColor*2) ) * s.Color;
float4 color = _Color * (lightColor) * s.Color * (atten*2) * _Shininess;
color *= toon;
color.a = s.Alpha;
return color;
}
struct Input
{
float2 uv_MainTex;
};
void vert (inout appdata_full v, out Input o) {
UNITY_INITIALIZE_OUTPUT(Input,o);
}
void surf (Input IN, inout ToonSurfaceOutput o)
{
// Defaults
o.Albedo = 0.0;
o.Emission = 0.0;
o.Gloss = 0.0;
o.Specular = 0.0;
half4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
//o.Albedo = c;
o.Color = c;
o.Alpha = c.a;
}
ENDCG
// // Outline Pass
// Pass
// {
// Cull Off
// ZWrite On
// Lighting Off
// CGPROGRAM
// #pragma vertex vert
// #pragma fragment frag
// #include "UnityCG.cginc"
// #include "ToonOutlineVertFrag.cginc"
// ENDCG
// }
// Surface Shader Pass ( Back )
Cull Front
ZWrite On
//AlphaTest Equal 1
AlphaTest Greater 0.9
Blend SrcAlpha OneMinusSrcAlpha
CGPROGRAM
#pragma surface surf Toon alphatest:_Cutoff vertex:vert
// Toon Surface Shader for Unity
// File : ToonSurface.cginc
// Title : Toon Surface Shader with Alpha
// Language : Cg Language
// Include : ToonSurface.cginc
/*
How To Use :
CGPROGRAM
#pragma surface surf Toon
#include "ToonSurface.cginc"
ENDCG
*/
float4 _Color;
sampler2D _MainTex;
float _ShadowThreshold;
float4 _ShadowColor;
float _ShadowSharpness;
float _Shininess;
struct ToonSurfaceOutput
{
half3 Albedo;
half3 Normal;
half3 Emission;
half3 Gloss;
half Specular;
half Alpha;
half4 Color;
};
inline half4 LightingToon (ToonSurfaceOutput s, half3 lightDir, half3 viewDir, half atten)
{
//Lighting paramater
float4 lightColor = _LightColor0 * atten;
float lightStrength = dot(lightDir, s.Normal) * 0.5 + 0.5;
//ToonMapping
half shadowRate = abs( max( -1, ( min( lightStrength, _ShadowThreshold ) -_ShadowThreshold)*_ShadowSharpness ) )*_ShadowColor.a;
float4 toon = float4(1,1,1,1) * (1-shadowRate) + _ShadowColor *shadowRate;
//Output
//float4 color = saturate( _Color * (lightColor*2) ) * s.Color;
float4 color = _Color * (lightColor) * s.Color * (atten*2) * _Shininess;
color *= toon;
color.a = s.Alpha;
return color;
}
struct Input
{
float2 uv_MainTex;
};
void vert (inout appdata_full v, out Input o) {
UNITY_INITIALIZE_OUTPUT(Input,o);
}
void surf (Input IN, inout ToonSurfaceOutput o)
{
// Defaults
o.Albedo = 0.0;
o.Emission = 0.0;
o.Gloss = 0.0;
o.Specular = 0.0;
half4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
//o.Albedo = c;
o.Color = c;
o.Alpha = c.a;
}
ENDCG
}
// Other Environment
Fallback "Diffuse"
}