庄懂着色器_L10_OldSchoolPro

Shader "AP01/L10/OldSchoolPro"
{Properties{[Header(Texture)]_MainTex    ("RGB:基础颜色 A:环境遮罩", 2D)     = "white" {}_NormTex    ("RGB:法线贴图", 2D)                = "bump" {}_SpecTex    ("RGB:高光颜色 A:高光次幂", 2D)     = "gray" {}_EmitTex    ("RGB:环境贴图", 2d)                = "black" {}_Cubemap    ("RGB:环境贴图", cube)              = "_Skybox" {}[Header(Diffuse)]_MainCol    ("基本色",      Color)              = (0.5, 0.5, 0.5, 1.0)_EnvDiffInt ("环境漫反射强度",  Range(0, 1))    = 0.2_EnvUpCol   ("环境天顶颜色", Color)             = (1.0, 1.0, 1.0, 1.0)_EnvSideCol ("环境水平颜色", Color)             = (0.5, 0.5, 0.5, 1.0)_EnvDownCol ("环境地表颜色", Color)             = (0.0, 0.0, 0.0, 0.0)[Header(Specular)]_SpecPow    ("高光次幂",    Range(1, 90))       = 30_EnvSpecInt ("环境镜面反射强度", Range(0, 5))   = 0.2_FresnelPow ("菲涅尔次幂", Range(0, 5))         = 1_CubemapMip ("环境球Mip", Range(0, 7))          = 0[Header(Emission)]_EmitInt    ("自发光强度", range(1, 10))         = 1}SubShader{Tags { "RenderType"="Opaque" }Pass{Name "FORWARD"Tags { "LightMode"="ForwardBase" }CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"// 追加投影相关包含文件#include "AutoLight.cginc"#include "Lighting.cginc"#pragma multi_compile_fwdbase_fullshadows#pragma target 3.0// 输入参数// Textureuniform sampler2D _MainTex;uniform sampler2D _NormTex;uniform sampler2D _SpecTex;uniform sampler2D _EmitTex;uniform samplerCUBE _Cubemap;// Diffuseuniform float3 _MainCol;uniform float _EnvDiffInt;uniform float3 _EnvUpCol;uniform float3 _EnvSideCol;uniform float3 _EnvDownCol;// Specularuniform float _SpecPow;uniform float _FresnelPow;uniform float _EnvSpecInt;uniform float _CubemapMip;// Emissionuniform float _EmitInt;// 输入结构struct VertexInput{float4 vertex   : POSITION;   // 顶点信息 Get✔float2 uv0      : TEXCOORD0;  // UV信息 Get✔float4 normal   : NORMAL;     // 法线信息 Get✔float4 tangent  : TANGENT;    // 切线信息 Get✔};// 输出结构struct VertexOutput{float4 pos    : SV_POSITION;  // 屏幕顶点位置float2 uv0      : TEXCOORD0;  // UV0float4 posWS    : TEXCOORD1;  // 世界空间顶点位置float3 nDirWS   : TEXCOORD2;  // 世界空间法线方向float3 tDirWS   : TEXCOORD3;  // 世界空间切线方向float3 bDirWS   : TEXCOORD4;  // 世界空间副切线方向LIGHTING_COORDS(5,6)          // 投影相关};// 输入结构>>>顶点Shader>>>输出结构VertexOutput vert (VertexInput v){VertexOutput o = (VertexOutput)0;                   // 新建输出结构o.pos = UnityObjectToClipPos( v.vertex );       // 顶点位置 OS>CSo.uv0 = v.uv0;                                  // 传递UVo.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);  // 副切线方向TRANSFER_VERTEX_TO_FRAGMENT(o)                  // 投影相关return o;                                           // 返回输出结构}// 输出结构>>>像素float4 frag(VertexOutput i) : COLOR{// 准备向量float3 nDirTS = UnpackNormal(tex2D(_NormTex, i.uv0)).rgb;float3x3 TBN = float3x3(i.tDirWS, i.bDirWS, i.nDirWS);float3 nDirWS = normalize(mul(nDirTS, TBN));float3 vDirWS = normalize(_WorldSpaceCameraPos.xyz - i.posWS.xyz);float3 vrDirWS = reflect(-vDirWS, nDirWS);float3 lDirWS = _WorldSpaceLightPos0.xyz;float3 lrDirWS = reflect(-lDirWS, nDirWS);// 准备点积结果float ndotl = dot(nDirWS, lDirWS);float vdotr = dot(vDirWS, lrDirWS);float vdotn = dot(vDirWS, nDirWS);// 采样纹理float4 var_MainTex = tex2D(_MainTex, i.uv0);float4 var_SpecTex = tex2D(_SpecTex, i.uv0);float3 var_EmitTex = tex2D(_EmitTex, i.uv0).rgb;float3 var_Cubemap = texCUBElod(_Cubemap, float4(vrDirWS, lerp(_CubemapMip, 0.0, var_SpecTex.a))).rgb;// 光照模型(直接光照部分)float3 baseCol = var_MainTex.rgb * _MainCol;float lambert = max(0.0, ndotl);float specCol = var_SpecTex.rgb;float specPow = lerp(1, _SpecPow, var_SpecTex.a);float phong = pow(max(0.0, vdotr), specPow);float shadow = LIGHT_ATTENUATION(i);float3 dirLighting = (baseCol * lambert + specCol * phong) * _LightColor0 * shadow;// 光照模型(环境光照部分)float upMask = max(0.0, nDirWS.g);          // 获取朝上部分遮罩float downMask = max(0.0, -nDirWS.g);       // 获取朝下部分遮罩float sideMask = 1.0 - upMask - downMask;   // 获取侧面部分遮罩float3 envCol = _EnvUpCol * upMask +_EnvSideCol * sideMask +_EnvDownCol * downMask;     // 混合环境色float fresnel = pow(max(0.0, 1.0 - vdotn), _FresnelPow);    // 菲涅尔float occlusion = var_MainTex.a;float3 envLighting = (baseCol * envCol * _EnvDiffInt + var_Cubemap * fresnel * _EnvSpecInt * var_SpecTex.a) * occlusion;// 光照模型(自发光部分)float emitInt = _EmitInt * (sin(frac(_Time.z)) * 0.5 + 0.5);float3 emission = var_EmitTex * emitInt;// 返回结果float3 finalRGB = dirLighting + envLighting + emission;return float4(finalRGB, 1.0);}ENDCG}}FallBack "Diffuse"
}