效果：

代码：

Shader "MyShader/Jade"
{Properties{_DiffuseColor("漫反射颜色",color)=(1,1,1,1)_ThicknessMap("厚度图",2d)="white"{}_AddColor("叠加颜色",color)=(1,1,1,1)_CubeMap("环境贴图",Cube)="white"{}_RotateAngle("环境贴图旋转偏移",Range(0,360))=0_BackLightContrast("透光对比度",float)=1.0_BackLightScale("透光亮度",float)=1.0_Distort("扭曲程度",Range(0,1))=1}SubShader{Tags { "RenderType"="Opaque" }LOD 100Pass{Tags{"LightMode"="ForwardBase"}CGPROGRAM#pragma vertex vert#pragma fragment frag#pragma multi_compile_fwdbase#include "UnityCG.cginc"#include "AutoLight.cginc"#include "Lighting.cginc"float _BackLightContrast;float _Distort;float _BackLightScale;sampler2D _ThicknessMap;samplerCUBE _CubeMap;float4 _CubeMap_HDR;float _RotateAngle;float4 _DiffuseColor;float4 _AddColor;float3 Rotate(float3 v,float rotateAngle){float rad = rotateAngle*UNITY_PI/180.0;float2x2 rotateMul = float2x2(cos(rad),-sin(rad),sin(rad),cos(rad));float2 rotate_dir = mul(rotateMul,v.xz);return float3(v.x,rotate_dir.y,v.z);}struct appdata{float4 vertex : POSITION;float2 texcoord : TEXCOORD0;float3 normal : NORMAL;};struct v2f{float4 pos : SV_POSITION;float2 uv : TEXCOORD0;float3 normal_world : TEXCOORD1;float3 pos_world : TEXCOORD2;};v2f vert (appdata v){v2f o;o.pos = UnityObjectToClipPos(v.vertex);o.uv = v.texcoord;o.normal_world =normalize( mul(v.normal,unity_WorldToObject).xyz);o.pos_world = mul(unity_ObjectToWorld,v.vertex).xyz;return o;}fixed4 frag (v2f i) : SV_Target{half3 normal_world = normalize(i.normal_world);half3 view_dir = normalize(_WorldSpaceCameraPos.xyz-i.pos_world);half3 light_dir = normalize(_WorldSpaceLightPos0.xyz);//漫反射half NdotL = saturate(dot(normal_world,light_dir));half3 diffuse_term = NdotL*_DiffuseColor*_LightColor0.xyz+_AddColor.xyz;//透射光half3 back_dir = -normalize(light_dir+normal_world*_Distort);   //透射方向half VdotBL = saturate(dot(view_dir,back_dir));half thickness = 1.0-tex2D(_ThicknessMap,i.uv).r;half back_light = saturate(pow(VdotBL,_BackLightContrast))*_BackLightScale;half3 backlight_term = back_light*_LightColor0.xyz*thickness;//环境光half3 hdr_reflect_dir = normalize(reflect(-view_dir,normal_world));half3 rotate_hdr_reflect_dir = Rotate(hdr_reflect_dir,_RotateAngle);half frensil = 1-saturate(dot(normal_world,view_dir));float4 hdr_color = texCUBE(_CubeMap,rotate_hdr_reflect_dir);half3 env_color = DecodeHDR(hdr_color,_CubeMap_HDR)*frensil;half3 final_color = backlight_term+env_color+diffuse_term;return fixed4(final_color,1.0);}ENDCG}Pass{Tags{"LightMode"="ForwardAdd"}Blend One OneCGPROGRAM#pragma vertex vert#pragma fragment frag#pragma multi_compile_fwdadd#include "UnityCG.cginc"#include "AutoLight.cginc"#include "Lighting.cginc"float _BackLightContrast;float _Distort;float _BackLightScale;sampler2D _ThicknessMap;float3 Rotate(float3 v,float rotateAngle){float rad = rotateAngle*UNITY_PI/180.0;float2x2 rotateMul = float2x2(cos(rad),-sin(rad),sin(rad),cos(rad));float2 rotate_dir = mul(rotateMul,v.xz);return float3(v.x,rotate_dir.y,v.z);}struct appdata{float4 vertex : POSITION;float2 texcoord : TEXCOORD0;float3 normal : NORMAL;};struct v2f{float4 pos : SV_POSITION;float2 uv : TEXCOORD0;float3 normal_world : TEXCOORD1;float3 pos_world : TEXCOORD2;LIGHTING_COORDS(3,4)};v2f vert (appdata v){v2f o;o.pos = UnityObjectToClipPos(v.vertex);o.uv = v.texcoord;o.normal_world =normalize( mul(v.normal,unity_WorldToObject).xyz);o.pos_world = mul(unity_ObjectToWorld,v.vertex).xyz;TRANSFER_VERTEX_TO_FRAGMENT(o);return o;}fixed4 frag (v2f i) : SV_Target{half3 normal_world = normalize(i.normal_world);half3 view_dir = normalize(_WorldSpaceCameraPos.xyz-i.pos_world);half3 light_dir = normalize(_WorldSpaceLightPos0.xyz);//透射光half3 back_dir = -normalize(light_dir+normal_world*_Distort);   //透射方向half VdotBL = saturate(dot(view_dir,back_dir));half thickness = 1.0-tex2D(_ThicknessMap,i.uv).r;half back_light = saturate(pow(VdotBL,_BackLightContrast))*_BackLightScale;half3 backlight_term = back_light*_LightColor0.xyz*thickness;half3 atten = LIGHT_ATTENUATION(i);half3 final_color = backlight_term*atten;return fixed4(final_color,1.0);}ENDCG}}
}