Shader “Nature/Terrain/Absurdly-Soft Bumped Specular” {
Properties {
_SpecColor (“Specular Color”, Color) = (0.5, 0.5, 0.5, 1)
_Shininess (“Shininess”, Range (0.03, 1)) = 0.078125
// set by terrain engine
[HideInInspector] _Control (“Control (RGBA)”, 2D) = “red” {}
[HideInInspector] _Splat3 (“Layer 3 (A)”, 2D) = “white” {}
[HideInInspector] _Splat2 (“Layer 2 (B)”, 2D) = “white” {}
[HideInInspector] _Splat1 (“Layer 1 (G)”, 2D) = “white” {}
[HideInInspector] _Splat0 (“Layer 0 (R)”, 2D) = “white” {}
[HideInInspector] _Normal3 (“Normal 3 (A)”, 2D) = “bump” {}
[HideInInspector] _Normal2 (“Normal 2 (B)”, 2D) = “bump” {}
[HideInInspector] _Normal1 (“Normal 1 (G)”, 2D) = “bump” {}
[HideInInspector] _Normal0 (“Normal 0 (R)”, 2D) = “bump” {}
// used in fallback on old cards base map
[HideInInspector] _MainTex (“BaseMap (RGB)”, 2D) = “white” {}
[HideInInspector] _Color (“Main Color”, Color) = (1,1,1,1)
}
SubShader {
Tags {
“SplatCount” = “4”
“Queue” = “Geometry-100”
“RenderType” = “Opaque”
}
CGPROGRAM
// Add the “addshadow” flag to generate the required shadow pass:
#pragma surface surf BlinnPhong vertex:vert addshadow
#pragma target 3.0
// Define filter to use:
#define SOFTENER_FILTER PCF8x8
// Include Shadow Softener:
#include “Shadow Softener/Shaders/ShadowSoftener.cginc”
void vert (inout appdata_full v)
{
v.tangent.xyz = cross(v.normal, float3(0,0,1));
v.tangent.w = -1;
}
struct Input {
float2 uv_Control : TEXCOORD0;
float2 uv_Splat0 : TEXCOORD1;
float2 uv_Splat1 : TEXCOORD2;
float2 uv_Splat2 : TEXCOORD3;
float2 uv_Splat3 : TEXCOORD4;
};
sampler2D _Control;
sampler2D _Splat0,_Splat1,_Splat2,_Splat3;
sampler2D _Normal0,_Normal1,_Normal2,_Normal3;
half _Shininess;
void surf (Input IN, inout SurfaceOutput o) {
fixed4 splat_control = tex2D (_Control, IN.uv_Control);
fixed4 col;
col = splat_control.r * tex2D (_Splat0, IN.uv_Splat0);
col += splat_control.g * tex2D (_Splat1, IN.uv_Splat1);
col += splat_control.b * tex2D (_Splat2, IN.uv_Splat2);
col += splat_control.a * tex2D (_Splat3, IN.uv_Splat3);
o.Albedo = col.rgb;
fixed4 nrm;
nrm = splat_control.r * tex2D (_Normal0, IN.uv_Splat0);
nrm += splat_control.g * tex2D (_Normal1, IN.uv_Splat1);
nrm += splat_control.b * tex2D (_Normal2, IN.uv_Splat2);
nrm += splat_control.a * tex2D (_Normal3, IN.uv_Splat3);
// Sum of our four splat weights might not sum up to 1, in
// case of more than 4 total splat maps. Need to lerp towards
// “flat normal” in that case.
fixed splatSum = dot(splat_control, fixed4(1,1,1,1));
fixed4 flatNormal = fixed4(0.5,0.5,1,0.5); // this is “flat normal” in both DXT5nm and xyz*2-1 cases
nrm = lerp(flatNormal, nrm, splatSum);
o.Normal = UnpackNormal(nrm);
o.Gloss = col.a * splatSum;
o.Specular = _Shininess;
o.Alpha = 0.0;
}
ENDCG
}
Dependency “AddPassShader” = “Hidden/Nature/Terrain/Absurdly-Soft Bumped Specular AddPass”
Dependency “BaseMapShader” = “Absurdly-Soft Specular”
Fallback “Nature/Terrain/Diffuse”
}
