1、

Shader "Unlit/XRay"
{Properties{_MainTex("Texture", 2D) = "white" {}// 漫反射_Diffuse("Diffuse", COLOR) = (1,1,1,1)// XRay 效果_XRayColor("XRay Color", COLOR) = (0,1,1,1)_XRayPower("XRay Power", Range(0.00001,3)) = 0.001}SubShader{Tags { "Queue" = "Geometry+1000" "RenderType" = "Opaque" }LOD 100Pass{Stencil {Ref 254Comp AlwaysPass ReplaceZFail Keep}CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"#include "Lighting.cginc"struct v2f{float4 vertex : SV_POSITION;float2 uv : TEXCOORD0;float3 worldNormal:TEXCOORD1;float3 worldPos:TEXCOORD2;};sampler2D _MainTex;float4 _MainTex_ST;float4 _Diffuse;float _Steps;float _ToonLerpWeight;float4 _RimColor;float _RimPower;v2f vert(appdata_base v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.worldNormal = UnityObjectToWorldNormal(v.normal);o.worldPos = mul(unity_ObjectToWorld,v.vertex);o.uv = TRANSFORM_TEX(v.texcoord,_MainTex);return o;}fixed4 frag(v2f i) : SV_Target{// 环境光float3 ambient = UNITY_LIGHTMODEL_AMBIENT;// 贴图的本色fixed3 albedo = tex2D(_MainTex, i.uv).rgb;// 视野方向float3 viewDir = normalize(UnityWorldSpaceViewDir(i.worldPos));// 漫反射fixed3 worldLightDir = UnityWorldSpaceLightDir(i.worldPos);float halfLambert = dot(worldLightDir,i.worldNormal) * 0.5 + 0.5;// 最终漫反射fixed3 diffuse = _LightColor0.rgb * albedo * _Diffuse.rgb * halfLambert;return fixed4(ambient + diffuse,1);}ENDCG}Pass{Tags{"ForceNoShadowCasting" = "true"}Name "XRay"// 添加 混合效果 注意渲染顺序 QueueBlend SrcAlpha one// 关闭深度写入ZWrite offZTest Greater  // 表示大于的时候显示（目的显示墙后面的物体）//使用Stencil进行过滤，该Shader的第一个Pass中我们向Stencil Buffer中写入一个值254，在Xray的pass中，如果stencil的值为254，则不再绘制效果Stencil {Ref 254Comp NotEqualPass KeepZFail Keep}CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"float4 _XRayColor;float _XRayPower;struct v2f {float4 vertex :SV_POSITION;//方法一，得到世界点，再到片元中计算视野方向//float3 worldPos:TEXCOORD0;//float3 worldNormal:TEXCOORD1;//方法二，放在Object空间下计算float3 viewDir:TEXCOORD0;float3 normal:TEXCOORD1;};v2f vert(appdata_base v) {v2f o;o.vertex = UnityObjectToClipPos(v.vertex);// 方法一，得到世界点，再到片元中计算视野方向//o.worldNormal = UnityObjectToWorldNormal(v.normal);//o.worldPos = mul(unity_ObjectToWorld,v.vertex);// 方法二，把视野方向在模型中就计算出来//o.worldNormal = UnityObjectToWorldNormal(v.normal);o.viewDir = ObjSpaceViewDir(v.vertex);o.normal = v.normal;return o;}float4 frag(v2f i) :SV_Target{/// 通过视野方向和世界法线方向求得边沿（视野方向和世界法线方向 垂直为边缘）// 方法一，得到世界点，再到片元中计算视野方向//float3 worldNormal = normalize(i.worldNormal);//float3 viewDir = normalize(UnityWorldSpaceViewDir(i.worldPos));// 方法二，把视野方向在模型中就计算出来float3 worldNormal = normalize(i.normal);float3 viewDir = normalize(i.viewDir);// 边缘float rim = 1 - dot(worldNormal,viewDir);  // 1- 让边沿为 1return _XRayColor * pow(rim,1 / _XRayPower);}ENDCG}}FallBack "Diffuse"
}

2、

Shader "Unity/XRay"
{Properties{_MainTex("Texture", 2D) = "white" {}_Diffuse("Color",Color) = (1,1,1,1)_XRayColor("XRayColor",Color) = (1,1,1,1)_XRayPower("XRayPower",float) = 0}SubShader{Tags {"Queue" = "Geometry+1000" "RenderType" = "Opaque" }LOD 100//Xray效果Pass{Name "Xray"//忽略阴影，半透明物体不需要阴影，可开启此功能Tags{ "ForceNoShadowCasting" = "true" }//开启混合Blend SrcAlpha One//不进行任何颜色信息写入ZWrite Off//大于深度缓冲池中的颜色深度的片元才进行处理 其他的全部舍弃ZTest GreaterCGPROGRAM#pragma vertex vert #pragma fragment frag #include "UnityCG.cginc"#include "Lighting.cginc"float4 _XRayColor;float _XRayPower;struct v2f{float4 vertex:SV_POSITION;float3 normal:TEXCOORD0;float3 viewDir:TEXCOORD1;};v2f vert(appdata_base v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.normal = v.normal;o.viewDir = ObjSpaceViewDir(v.vertex);return o;};fixed4 frag(v2f i) :SV_TARGET{float3 NormalDir = normalize(i.normal);float3 ViewDir = normalize(i.viewDir);float rim = 1 - saturate(dot(NormalDir,ViewDir));float4 rimColor = _XRayColor * pow(rim,1 / _XRayPower);return rimColor;};ENDCG}//正常的漫反射渲染Pass{CGPROGRAM#pragma vertex vert#pragma fragment frag #include "UnityCG.cginc"#include "Lighting.cginc"sampler2D _MainTex;float4 _MainTex_ST;float3 _Diffuse;struct v2f{float4 vertex:SV_POSITION;float2 uv:TEXCOORD0;float3 worldPos:TEXCOORD1;float3 worldNormal:TEXCOORD2;};v2f vert(appdata_base v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.uv = TRANSFORM_TEX(v.texcoord,_MainTex);o.worldPos = mul(unity_ObjectToWorld,v.vertex);o.worldNormal = UnityObjectToWorldNormal(v.normal);return o;};fixed4 frag(v2f i) :SV_TARGET{float3 worldNormalDir = normalize(i.worldNormal);float3 WorldLightDir = normalize(UnityWorldSpaceLightDir(i.worldNormal));float3 texColor = tex2D(_MainTex,i.uv);float3 ambient = UNITY_LIGHTMODEL_AMBIENT.rgb * texColor.rgb;float3 diffuse = _LightColor0.rgb * _Diffuse.rgb * texColor.rgb * (dot(worldNormalDir,WorldLightDir) * 0.5 + 0.5);float3 color = diffuse + ambient;return fixed4(color,1);};ENDCG}}Fallback "Diffuse"
}

3、Highlight Plus - All in One Outline & Selection Effects

Highlight Plus - All in One Outline & Selection Effects | VFX Shaders | Unity Asset Store