双面渲染shader

来源：互联网发布：柜子设计软件编辑：程序博客网时间：2024/04/20 22:58
  Shader " DoubleSideShader" {              Properties {               //正面5个参数                    _Color ("Main Color", Color) = (1,1,1,1)                     _SpecColor ("Specular Color", Color) = (0.5, 0.5, 0.5, 1)                     _Shininess ("Shininess", Range (0.03, 1)) = 0.078125                     _MainTex ("Base (RGB) Gloss (A)", 2D) = "white" {}                    _BumpMap ("Normalmap", 2D) = "bump" {}                //反面拷贝 改名 也是5个                    _BackColor ("Back Main Color", Color) = (1,1,1,1)                    _BackSpecColor ("Back Specular Color", Color) = (0.5, 0.5, 0.5, 1)                    _BackShininess ("Back Shininess", Range (0.03, 1)) = 0.078125                    _BackMainTex ("Back Base (RGB) Gloss (A)", 2D) = "white" {}                    _BackBumpMap ("Back Normalmap", 2D) = "bump" {}                }                SubShader {                Tags { "RenderType"="Opaque" }                    LOD 400                    Cull back                //开始渲染正面                    CGPROGRAM                //表明是surface渲染方式 主渲染程序是surf 光照模型是BLinnPhong                #pragma surface surf BlinnPhong                                                 sampler2D _MainTex;               sampler2D _BumpMap;                fixed4 _Color;                half _Shininess;                                struct Input {                    float2 uv_MainTex;                    float2 uv_BumpMap;                };                                void surf (Input IN, inout SurfaceOutput o) {                    fixed4 tex = tex2D(_MainTex, IN.uv_MainTex);                   o.Albedo = tex.rgb * _Color.rgb;                    o.Gloss = tex.a;                    o.Alpha = tex.a * _Color.a;                    o.Specular = _Shininess;                   o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap));}                ENDCG                                                    Cull front                //开始渲染反面 其实和就是拷贝了一份正面渲染的代码 除了变量名要改                    CGPROGRAM             #pragma surface surf BlinnPhong                               sampler2D _BackMainTex;                sampler2D _BackBumpMap;                fixed4 _BackColor;                half _BackShininess;                               struct Input {                    float2 uv_BackMainTex;                    float2 uv_BackBumpMap;                };                                void surf (Input IN, inout SurfaceOutput o) {                     fixed4 tex = tex2D(_BackMainTex, IN.uv_BackMainTex);                     o.Albedo = tex.rgb * _BackColor.rgb;                   o.Gloss = tex.a;                    o.Alpha = tex.a * _BackColor.a;                     o.Specular = _BackShininess;                     o.Normal = UnpackNormal(tex2D(_BackBumpMap, IN.uv_BackBumpMap));}                 ENDCG                }                 FallBack "Specular"                }
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