Surface Shader: Fade between two textures with bumpmap

Graphics Shaders & Materials
1

I’m trying to create a shader that fades between two textures, including bumpmaps (normal). I’ve been trying for hours but I can’t figure out how to actually fade between the two bumpmaps.

This is what I got so far.

Shader "Insanity" {
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
	_MainTex1 ("Base (RGB) Gloss (A)", 2D) = "white" {}
	_BumpMap1 ("Normalmap", 2D) = "bump" {}
	_MainTex2 ("Base (RGB) Gloss (A)", 2D) = "white" {}
	_BumpMap2 ("Normalmap", 2D) = "bump" {}
	_Blend ("Blend", Range(0.0,1.0)) = 0.0
}
SubShader { 
	Tags { "RenderType"="Opaque" }
	LOD 400
	
CGPROGRAM
#pragma surface surf BlinnPhong

sampler2D _MainTex1;
sampler2D _BumpMap1;
sampler2D _MainTex2;
sampler2D _BumpMap2;
float4 _Color;
float _Shininess;
float _Blend;

struct Input {
	float2 uv_MainTex1;
	float2 uv_BumpMap1;
	float2 uv_MainTex2;
	float2 uv_BumpMap2;
};

void surf (Input IN, inout SurfaceOutput o) {
	half4 tex1 = tex2D(_MainTex1, IN.uv_MainTex1);
	
	o.Albedo = ( tex1.rgb * _Color.rgb )  * ( 1 - _Blend );
	o.Gloss = ( tex1.a ) * ( 1 - _Blend );
	o.Alpha = ( tex1.a * _Color.a )  * ( 1 - _Blend );
	o.Specular = _Shininess;
	
	half4 tex2 = tex2D(_MainTex2, IN.uv_MainTex2);
	o.Albedo += ( tex2.rgb * _Color.rgb )  * ( _Blend );
	o.Gloss += ( tex2.a ) * ( _Blend );
	o.Alpha += ( tex2.a * _Color.a )  * ( _Blend );

	//TODO Fade between normalmaps
	o.Normal = UnpackNormal(normal1);


}
ENDCG
}

FallBack "Specular"
}

Anyone knows what I’m doing wrong and or what I need to do?

Thanks!

2

try:

half4 tex1 = tex2D(_MainTex1, IN.uv_MainTex1); 
half4 tex2 = tex2D(_MainTex2, IN.uv_MainTex2); 

o.Albedo = lerp(tex1,tex2,_Blend) * _Color.rgb;