超级智能体---codebuddy的Craft

Shader "Custom/3DMaterial"
{
    Properties
    {
        _Color ("颜色", Color) = (1,1,1,1)
        _MainTex ("主纹理", 2D) = "white" {}
        _Glossiness ("光滑度", Range(0,1)) = 0.5
        _Metallic ("金属度", Range(0,1)) = 0.0
        _BumpMap ("法线贴图", 2D) = "bump" {}
        _BumpScale ("法线强度", Float) = 1.0
        _EmissionMap ("自发光贴图", 2D) = "black" {}
        [HDR]_EmissionColor ("自发光颜色", Color) = (0,0,0,1)
    }
    SubShader
    {
        Tags { "RenderType"="Opaque" }
        LOD 200

        CGPROGRAM
        #pragma surface surf Standard fullforwardshadows
        #pragma target 3.0

        sampler2D _MainTex;
        sampler2D _BumpMap;
        sampler2D _EmissionMap;

        struct Input
        {
            float2 uv_MainTex;
            float2 uv_BumpMap;
            float2 uv_EmissionMap;
        };

        half _Glossiness;
        half _Metallic;
        fixed4 _Color;
        float _BumpScale;
        half4 _EmissionColor;

        void surf (Input IN, inout SurfaceOutputStandard o)
        {
            // 主纹理和颜色
            fixed4 c = tex2D (_MainTex, IN.uv_MainTex) * _Color;
            o.Albedo = c.rgb;
            
            // 法线贴图
            o.Normal = UnpackScaleNormal(tex2D(_BumpMap, IN.uv_BumpMap), _BumpScale);
            
            // 金属度和光滑度
            o.Metallic = _Metallic;
            o.Smoothness = _Glossiness;
            
            // 自发光
            half4 emission = tex2D(_EmissionMap, IN.uv_EmissionMap) * _EmissionColor;
            o.Emission = emission.rgb;
            
            o.Alpha = c.a;
        }
        ENDCG
    }
    FallBack "Diffuse"
}

Shader "Custom/3DMaterial"
{
    Properties
    {
        _Color ("颜色", Color) = (1,1,1,1)
        _MainTex ("主纹理", 2D) = "white" {}
        _Glossiness ("光滑度", Range(0,1)) = 0.5
        _Metallic ("金属度", Range(0,1)) = 0.0
        _BumpMap ("法线贴图", 2D) = "bump" {}
        _BumpScale ("法线强度", Float) = 1.0
        _EmissionMap ("自发光贴图", 2D) = "black" {}
        [HDR]_EmissionColor ("自发光颜色", Color) = (0,0,0,1)
        
        // 次表面散射参数
        [HDR]_SubsurfaceColor ("次表面散射颜色", Color) = (1,0.5,0.3,1)
        _SubsurfacePower ("次表面散射强度", Range(0.1,16)) = 8.0
        _SubsurfaceScale ("次表面散射范围", Range(0.1,10)) = 2.0
        _SubsurfaceDistortion ("次表面散射扭曲", Range(0,1)) = 0.5
        _ThicknessMap ("厚度贴图", 2D) = "white" {}
    }
    SubShader
    {
        Tags { "RenderType"="Opaque" }
        LOD 200
        
        CGPROGRAM
        // 自定义光照模型
        #pragma surface surf Translucent fullforwardshadows
        #pragma target 3.0

        sampler2D _MainTex;
        sampler2D _BumpMap;
        sampler2D _EmissionMap;
        sampler2D _ThicknessMap;

        struct Input
        {
            float2 uv_MainTex;
            float2 uv_BumpMap;
            float2 uv_EmissionMap;
            float2 uv_ThicknessMap;
        };

        half _Glossiness;
        half _Metallic;
        fixed4 _Color;
        float _BumpScale;
        half4 _EmissionColor;
        
        // 次表面散射参数
        half4 _SubsurfaceColor;
        half _SubsurfacePower;
        half _SubsurfaceScale;
        half _SubsurfaceDistortion;

        // 自定义光照模型，支持次表面散射
        half4 LightingTranslucent(SurfaceOutput s, half3 lightDir, half3 viewDir, half atten)
        {
            // 标准漫反射
            half NdotL = dot(s.Normal, lightDir);
            half diff = max(0, NdotL);
            
            // 次表面散射计算
            half3 h = normalize(lightDir + s.Normal * _SubsurfaceDistortion);
            float VdotH = pow(saturate(dot(viewDir, -h)), _SubsurfacePower) * _SubsurfaceScale;
            half3 subsurface = _SubsurfaceColor.rgb * VdotH * s.Alpha;
            
            // 最终颜色 = 漫反射 + 次表面散射
            half4 c;
            c.rgb = (s.Albedo * diff + subsurface) * _LightColor0.rgb * atten;
            c.a = s.Alpha;
            return c;
        }

        void surf (Input IN, inout SurfaceOutput o)
        {
            // 主纹理和颜色
            fixed4 c = tex2D (_MainTex, IN.uv_MainTex) * _Color;
            o.Albedo = c.rgb;
            
            // 法线贴图
            o.Normal = UnpackScaleNormal(tex2D(_BumpMap, IN.uv_BumpMap), _BumpScale);
            
            // 光滑度
            o.Specular = _Glossiness;
            o.Gloss = _Metallic;
            
            // 自发光
            half4 emission = tex2D(_EmissionMap, IN.uv_EmissionMap) * _EmissionColor;
            o.Emission = emission.rgb;
            
            // 厚度贴图用于次表面散射
            o.Alpha = tex2D(_ThicknessMap, IN.uv_ThicknessMap).r;
        }
        ENDCG
    }
    FallBack "Diffuse"
}