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| Shader "KerryTA/Code/302SHDiffuse"
{
Properties
{
_Tint("Tint", Color) = (1,1,1,1)
_Expose("Expose", Float) = 1
_NormalMap("NormalMap", 2D) = "bump" {}
_NormalIntensity("NormalIntensity", Range(0.0, 5.0)) = 0.5
_AOMap("AOMap", 2D) = "white" {}
_AOAdjust("AOAdjust", Range(0,1)) = 1
custom_SHAr("Custom_SHAr", Vector) = (0,0,0,0)
custom_SHAg("custom_SHAg", Vector) = (0,0,0,0)
custom_SHAb("custom_SHAb", Vector) = (0,0,0,0)
custom_SHBr("custom_SHBr", Vector) = (0,0,0,0)
custom_SHBg("custom_SHBg", Vector) = (0,0,0,0)
custom_SHBb("custom_SHBb", Vector) = (0,0,0,0)
custom_SHC("Custom_SHC", Vector) = (0,0,0,1)
}
SubShader
{
Tags { "RenderType"="Opaque" }
LOD 100
Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
struct appdata
{
float4 vertex : POSITION;
float2 texcoord : TEXCOORD0;
float3 normal : NORMAL;
float4 tangent : TANGENT;
};
struct v2f
{
float2 uv : TEXCOORD0;
float4 pos : SV_POSITION;
float3 normal_world : TEXCOORD1;
float3 pos_world : TEXCOORD2;
float3 tangent_world : TEXCOORD3;
float3 binormal_world : TEXCOORD4;
};
sampler2D _NormalMap;
float4 _NormalMap_ST;
float _NormalIntensity;
sampler2D _AOMap;
float _AOAdjust;
float4 _Tint;
float _Expose;
half4 custom_SHAr;
half4 custom_SHAg;
half4 custom_SHAb;
half4 custom_SHBr;
half4 custom_SHBg;
half4 custom_SHBb;
half4 custom_SHC;
float3 ACESFilm(float3 x)
{
float a = 2.51f;
float b = 0.03f;
float c = 2.43f;
float d = 0.59f;
float e = 0.14f;
return saturate((x*(a*x + b)) / (x*(c*x + d) + e));
}
v2f vert (appdata v)
{
v2f o;
o.pos = UnityObjectToClipPos(v.vertex);
o.uv = v.texcoord * _NormalMap_ST.xy + _NormalMap_ST.zw;
o.normal_world = normalize(mul(float4(v.normal, 0.0), unity_WorldToObject).xyz);
o.tangent_world = normalize(mul(unity_ObjectToWorld, float4(v.tangent.xyz, 0.0)).xyz);
o.binormal_world = normalize(cross(o.normal_world, o.tangent_world)) * v.tangent.w;
o.pos_world = mul(unity_ObjectToWorld, v.vertex).xyz;
return o;
}
half4 frag (v2f i) : SV_Target
{
half3 normal_dir = normalize(i.normal_world);
half3 tangent_dir = normalize(i.tangent_world);
half3 binormal_dir = normalize(i.binormal_world);
float3x3 TBN = float3x3(tangent_dir, binormal_dir, normal_dir);
half3 normaldata = UnpackNormal(tex2D(_NormalMap, i.uv));
normaldata.xy = normaldata.xy * _NormalIntensity;
normal_dir = normalize(mul(normaldata, TBN));
half ao = tex2D(_AOMap, i.uv).r;
ao = lerp(1.0, ao, _AOAdjust);
float4 normalForSH = float4(normal_dir, 1.0);
half3 x;
x.r = dot(custom_SHAr, normalForSH);
x.g = dot(custom_SHAg, normalForSH);
x.b = dot(custom_SHAb, normalForSH);
half3 x1, x2;
half4 vB = normalForSH.xyzz * normalForSH.yzzx;
x1.r = dot(custom_SHBr, vB);
x1.g = dot(custom_SHBg, vB);
x1.b = dot(custom_SHBb, vB);
half vC = normalForSH.x * normalForSH.x - normalForSH.y * normalForSH.y;
x2 = custom_SHC.rgb * vC;
float3 sh = max(float3(0.0, 0.0, 0.0),(x + x1 + x2));
sh = pow(sh, 1.0 / 2.2);
half3 env_color = sh;
half3 final_color = env_color * ao * _Tint.rgb * _Expose;
return half4(final_color, 1.0);
}
ENDCG
}
}
}
|
