Shader "AP01/L09/Matcap"
{Properties{_NormalMap  ("法线贴图", 2D) = "bump" {}_Matcap     ("Matcap", 2D) = "gray" {}_FresnelPow ("菲涅尔次幂", Range(0, 10)) = 1_EnvSpecInt ("环境镜面反射强度", Range(0, 5)) = 1}SubShader{Tags { "RenderType"="Opaque" }Pass{Name "FORWARD"Tags { "LightMode"="ForwardBase" }CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"#pragma multi_compile_fwdbase_fullshadows#pragma target 3.0// 输入参数uniform sampler2D _NormalMap;uniform sampler2D _Matcap;uniform float _FresnelPow;uniform float _EnvSpecInt;// 输入结构struct VertexInput{float4 vertex   : POSITION;     // 顶点信息float2 uv0      : TEXCOORD0;    // uv信息float3 normal   : NORMAL;       // 法线信息float4 tangent  : TANGENT;      // 切线信息};// 输出结构struct VertexOutput{float4 pos : SV_POSITION;       // 屏幕顶点位置float2 uv0 : TEXCOORD0;         // uv信息float4 posWS : TEXCOORD1;       // 世界顶点位置float3 nDirWS : TEXCOORD2;      // 世界法线方向float3 tDirWS : TEXCOORD3;      // 世界切线方向float3 bDirWS : TEXCOORD4;      // 世界副切线方向};// 输入结构>>>顶点Shader>>>输出结构VertexOutput vert (VertexInput v){VertexOutput o = (VertexOutput)0;           // 新建一个输出结构o.pos = UnityObjectToClipPos( v.vertex );o.uv0 = v.uv0;                                  // 传递uv信息o.posWS = mul(unity_ObjectToWorld, v.vertex);   // 顶点位置 OS>WSo.nDirWS = UnityObjectToWorldNormal(v.normal);  // 法线方向 OS>WSo.tDirWS = normalize(mul(unity_ObjectToWorld, float4(v.tangent.xyz, 0.0)).xyz); // 切线方向 OS>WSo.bDirWS = normalize(cross(o.nDirWS, o.tDirWS) * v.tangent.w);  // 根据nDir tDir求bDirreturn o;                                   // 将输出结构 输出}// 输出结构>>>像素float4 frag(VertexOutput i) : COLOR{// 准备向量float3 nDirTS = UnpackNormal(tex2D(_NormalMap, i.uv0)).rgb;float3x3 TBN = float3x3(i.tDirWS, i.bDirWS, i.nDirWS);float3 nDirWS = normalize(mul(nDirTS, TBN));        // 计算nDirVS 计算Fresnelfloat3 nDirVS = mul(UNITY_MATRIX_V, nDirWS);        // 计算MatcapUVfloat3 vDirWS = normalize(_WorldSpaceCameraPos.xyz - i.posWS.xyz); // 计算Fresnel// 准备中间变量float vdotn = dot(vDirWS, nDirWS);float2 matcapUV = nDirVS.rg * 0.5 + 0.5;// 光照模型float3 matcap = tex2D(_Matcap, matcapUV);float fresnel = pow(max(0.0, 1.0 - vdotn), _FresnelPow);float3 envSpecLighting = matcap * fresnel * _EnvSpecInt;// 返回值return float4(envSpecLighting, 1.0);}ENDCG}}FallBack "Diffuse"
}

Shader "AP01/L09/Cubemap"
{Properties{_Cubemap    ("环境球", Cube) = "_Skybox" {}_NormalMap  ("法线贴图", 2D) = "bump" {}_CubemapMip ("环境球Mip", Range(0, 7)) = 0_FresnelPow ("菲涅尔次幂", Range(0, 5)) = 1_EnvSpecInt ("环境镜面反射强度", Range(0, 5)) = 0.2}SubShader{Tags { "RenderType"="Opaque" }Pass{Name "FORWARD"Tags { "LightMode"="ForwardBase" }CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"#pragma multi_compile_fwdbase_fullshadows#pragma target 3.0// 输入参数uniform samplerCUBE _Cubemap;uniform sampler2D _NormalMap;uniform float _CubemapMip;uniform float _FresnelPow;uniform float _EnvSpecInt;// 输入结构struct VertexInput{float4 vertex   : POSITION;     // 顶点信息float2 uv0      : TEXCOORD0;    // uv信息float3 normal   : NORMAL;       // 法线信息float4 tangent  : TANGENT;      // 切线信息};// 输出结构struct VertexOutput{float4 pos : SV_POSITION;       // 屏幕顶点位置float2 uv0 : TEXCOORD0;         // uv信息float4 posWS : TEXCOORD1;       // 世界顶点位置float3 nDirWS : TEXCOORD2;      // 世界法线方向float3 tDirWS : TEXCOORD3;      // 世界切线方向float3 bDirWS : TEXCOORD4;      // 世界副切线方向};// 输入结构>>>顶点Shader>>>输出结构VertexOutput vert (VertexInput v){VertexOutput o = (VertexOutput)0;           // 新建一个输出结构o.pos = UnityObjectToClipPos( v.vertex );o.uv0 = v.uv0;                                  // 传递uv信息o.posWS = mul(unity_ObjectToWorld, v.vertex);   // 顶点位置 OS>WSo.nDirWS = UnityObjectToWorldNormal(v.normal);  // 法线方向 OS>WSo.tDirWS = normalize(mul(unity_ObjectToWorld, float4(v.tangent.xyz, 0.0)).xyz); // 切线方向 OS>WSo.bDirWS = normalize(cross(o.nDirWS, o.tDirWS) * v.tangent.w);  // 根据nDir tDir求bDirreturn o;                                   // 将输出结构 输出}// 输出结构>>>像素float4 frag(VertexOutput i) : COLOR{// 准备向量float3 nDirTS = UnpackNormal(tex2D(_NormalMap, i.uv0)).rgb;float3x3 TBN = float3x3(i.tDirWS, i.bDirWS, i.nDirWS);float3 nDirWS = normalize(mul(nDirTS, TBN));   // 计算Fresnel 计算vrDirWSfloat3 vDirWS = normalize(_WorldSpaceCameraPos.xyz - i.posWS.xyz);  // 计算Fresnelfloat3 vrDirWS = reflect(-vDirWS, nDirWS);// 采样Cubemap// 准备中间变量float vdotn = dot(vDirWS, nDirWS);// 光照模型float3 var_Cubemap = texCUBElod(_Cubemap, float4(vrDirWS, _CubemapMip)).rgb;float fresnel = pow(max(0.0, 1.0 - vdotn), _FresnelPow);float3 envSpecLighting = var_Cubemap * fresnel * _EnvSpecInt;// 返回值return float4(envSpecLighting, 1.0);}ENDCG}}FallBack "Diffuse"
}