面片描边shader

如图
http://clynamen.github.io/blog/2014/06/24/outline-in-unity-with-mesh-transparency/

Shader "MyURP/Grid_EdgeHighLight"
{Properties{_BaseColor("Base Color", Color) &＃61; (1, 1, 1, 1)_BaseMap("Base Map", 2D) &＃61; "white" {}_Thickness("_Thickness", range(0, 10)) &＃61; 1_AlphaInner("_AlphaInner", range(0, 1)) &＃61; 0.1}SubShader{Tags{"RenderPipeline"&＃61;"UniversalRenderPipeline""RenderType"&＃61;"Transparent""IgnoreProjector"&＃61;"True""Queue"&＃61;"Transparent"}Pass{Blend SrcAlpha OneMinusSrcAlpha/*, SrcAlpha One*/ZWrite OnTags{"LightMode" &＃61; "SRPDefaultUnlit"}HLSLPROGRAM#pragma vertex vert#pragma fragment frag#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"struct Attributes{float4 positionOS : POSITION;float2 uv : TEXCOORD0;};struct Varyings{float4 positionHCS : SV_POSITION;float2 uv : TEXCOORD0;};TEXTURE2D(_BaseMap);SAMPLER(sampler_BaseMap);// 不加会导致不能合批 就会画三次CBUFFER_START(UnityPerMaterial)half4 _BaseColor;float4 _BaseMap_ST;float _Thickness;float _AlphaInner;CBUFFER_ENDVaryings vert(Attributes IN){Varyings o;o.uv &＃61; IN.uv;o.positionHCS &＃61; TransformObjectToHClip(IN.positionOS.xyz);return o;}half4 frag(Varyings IN) : SV_Target{half4 col &＃61; SAMPLE_TEXTURE2D(_BaseMap, sampler_BaseMap, IN.uv) * _BaseColor;col.a &＃61; _AlphaInner;return col;}ENDHLSL}Pass{Name "Outline"Tags{"LightMode" &＃61; "UniversalForward"}Cull BackZWrite OnZTest LessBlend SrcAlpha OneMinusSrcAlphaColorMask RGBOffset 15,15HLSLPROGRAM#pragma vertex vert#pragma fragment frag#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"struct Attributes{float4 positionOS : POSITION;float2 uv : TEXCOORD0;};struct Varyings{float4 positionHCS : SV_POSITION;float2 uv : TEXCOORD0;};TEXTURE2D(_BaseMap);SAMPLER(sampler_BaseMap);// 不加会导致不能合批 就会画三次CBUFFER_START(UnityPerMaterial)half4 _BaseColor;float4 _BaseMap_ST;float _Thickness;CBUFFER_ENDVaryings vert(Attributes IN){Varyings o;o.uv &＃61; IN.uv;float3 dir &＃61; IN.positionOS.xyz - float3(0, 0, 0);dir &＃61; TransformObjectToWorldDir(dir);float3 worldPos &＃61; TransformObjectToWorld(IN.positionOS.xyz);worldPos &＃43;&＃61; dir * 2 * _Thickness;o.positionHCS &＃61; TransformWorldToHClip(worldPos);return o;}half4 frag(Varyings IN) : SV_Target{half4 col &＃61; _BaseColor;return col;}ENDHLSL}}
}