Unity shader之金属质感衣服

一套QQ飞车的衣服，模仿其效果写的shader，效果如下：

部分shader如下：

 Shader "qq/Cloth"
 {
     Properties
     {
         _MainTex ("Base (RGB)", 2D) = "white" {}
         _NormalMap("Normal Map", 2D) = "bump" {}
         _AlphaTex("Alpha", 2D) = "white" {}

         _SpecularColor ("Specular Color", Color) = (,,,)

         _Cubemap("Cubemap", Cube) = "" {}
         _HighLightMask ("High Light Mask", 2D) = "white" {}
     }

     SubShader
     {
         Tags
         {
             "Queue" = "Geometry"
             "IgnoreProjector" = "True"
             "RenderType" = "Geometry"
         }
         LOD         

         // 裙子的不透明区域
         Pass
         {
             Tags
             {
                 "LightMode" = "ForwardBase"
             }

             Cull Off

             CGPROGRAM
             #pragma vertex vert
             #pragma fragment frag
             #pragma multi_compile_fwdbase

             #include "UnityCG.cginc"
             #include "AutoLight.cginc"
             #include "Lighting.cginc"

             sampler2D _MainTex;
             sampler2D _NormalMap;
             sampler2D _AlphaTex;
             fixed4 _SpecularColor;
             samplerCUBE _Cubemap;
             sampler2D _HighLightMask;

             struct appdata
             {
                 float4 vertex : POSITION;
                 float2 uv : TEXCOORD0;
                 float3 normal : NORMAL;
                 float4 tangent : TANGENT;
             };

             struct v2f
             {
                 float4 pos : SV_POSITION;
                 float2 uv : TEXCOORD0;
                 float4 T2W1 : TEXCOORD1;
                 float4 T2W2 : TEXCOORD2;
                 float4 T2W3 : TEXCOORD3;
             };

             v2f vert(appdata v)
             {
                 v2f o;
                 o.pos = UnityObjectToClipPos(v.vertex);
                 o.uv = v.uv;

                 float3 worldTangent = UnityObjectToWorldDir(v.tangent.xyz);
                 float3 worldNormal = UnityObjectToWorldNormal(v.normal);
                 float3 binormal = cross(normalize(worldNormal), normalize(worldTangent)) * v.tangent.w;
                 float3 worldPos = mul(unity_ObjectToWorld, v.vertex).xyz;
                 o.T2W1 = float4(worldTangent.x, binormal.x, worldNormal.x, worldPos.x);
                 o.T2W2 = float4(worldTangent.y, binormal.y, worldNormal.y, worldPos.y);
                 o.T2W3 = float4(worldTangent.z, binormal.z, worldNormal.z, worldPos.z);
                 return o;
             }

             fixed4 frag(v2f i) : SV_TARGET
             {
                 fixed4 albedo = tex2D(_MainTex, i.uv);
                 fixed3 alphaCol = tex2D(_AlphaTex, i.uv);
                 fixed alpha = alphaCol.g;

                 float3 worldPos = float3(i.T2W1.w, i.T2W2.w, i.T2W3.w);
                 fixed3 worldView = normalize(UnityWorldSpaceViewDir(worldPos));

                 float3 tangentNormal = UnpackNormal(tex2D(_NormalMap, i.uv));
                 float3x3 tanToWorld = float3x3(i.T2W1.xyz, i.T2W2.xyz, i.T2W3.xyz);
                 float3 worldNormal = normalize(mul(tanToWorld, tangentNormal));

                 fixed3 ambient = albedo.xyz * UNITY_LIGHTMODEL_AMBIENT.xyz;

                 // 漫反射 半兰伯特光照模型
                 fixed3 worldLight = worldView;
                 //float dotLN = dot(worldLight, worldNormal) * 0.5 + 0.5;
                 float dotLN = dot(worldLight, worldNormal) * 0.25 + 0.75;        // [-1, 1] -> [0.5, 1]
                 fixed3 diffuse = albedo.xyz * _LightColor0.xyz * dotLN;

                 // 金边
                 float3 refDir = reflect(-worldView, worldNormal);
                 fixed3 refCol = texCUBE(_Cubemap, refDir);
                 fixed3 maskCol = tex2D(_HighLightMask, i.uv);
                 diffuse = diffuse * ( + refCol.r * maskCol.r *  * ( - alphaCol.r));

                 // 高光
                 fixed3 realWorldLight = normalize(UnityWorldSpaceLightDir(worldPos));
                 fixed3 halfDir = normalize(worldView + realWorldLight);
                 float specD = abs(dot(halfDir, worldNormal));
                 fixed3 specular = albedo.xyz * _SpecularColor * pow(specD, );

                 clip(alpha - 0.95);
                 fixed4 col = fixed4(ambient + diffuse + specular, alpha);

                 return col;
             }

             ENDCG
         }

         // 裙子的半透明区域
         Pass
         {
             Tags
             {
                 "LightMode" = "ForwardBase"
             }
             Blend SrcAlpha OneMinusSrcAlpha
             ZWrite Off
             Cull Off

             CGPROGRAM
             #pragma vertex vert
             #pragma fragment frag
             #pragma multi_compile_fwdbase

             #include "UnityCG.cginc"
             #include "AutoLight.cginc"
             #include "Lighting.cginc"

             sampler2D _MainTex;
             sampler2D _AlphaTex;

             struct appdata
             {
                 float4 vertex : POSITION;
                 float2 uv : TEXCOORD0;
             };

             struct v2f
             {
                 float4 pos : SV_POSITION;
                 float2 uv : TEXCOORD0;
             };

             v2f vert(appdata v)
             {
                 v2f o;
                 o.pos = UnityObjectToClipPos(v.vertex);
                 o.uv = v.uv;
                 return o;
             }

             fixed4 frag(v2f i) : SV_TARGET
             {
                 fixed4 albedo = tex2D(_MainTex, i.uv);
                 fixed3 alphaCol = tex2D(_AlphaTex, i.uv);
                 fixed alpha = alphaCol.g;
                 clip(0.95 - alpha);
                 fixed4 col = fixed4(albedo.rgb, alpha);
                 return col;
             }

             ENDCG
         }

     } 

     Fallback "Diffuse"
 }

cloth

转载请注明出处：https://www.cnblogs.com/jietian331/p/10830238.html

资源如下：https://files.cnblogs.com/files/jietian331/qq%E9%A3%9E%E8%BD%A6_%E9%87%91%E5%B1%9E%E8%B4%A8%E6%84%9F%E8%A1%A3%E6%9C%8D.zip