Unity卡通渲染之描边处理

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做游戏时候可能经常需要对物体轮廓进行描边处理，使用该Shader即可，但可能有个缺点，正方体类型的描边并不会准确。

效果图如下：

//Unity描边处理//@author mingming mingtingjian@sina.com//@time 2017-05-10 18:06:28Shader "Toon Shader/Toon Outline" {Properties {_Color ("Color Tint", Color) = (1, 1, 1, 1)_MainTex ("Main Tex", 2D) = "white" {}_Outline ("Outline", Range(0, 1)) = 0.1_OutlineColor ("Outline Color", Color) = (0, 0, 0, 1)}    SubShader {Tags { "RenderType"="Opaque" "Queue"="Geometry"}//Pass {NAME "OUTLINE"Cull FrontCGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"float _Outline;fixed4 _OutlineColor;struct a2v {float4 vertex : POSITION;float3 normal : NORMAL;}; struct v2f {    float4 pos : SV_POSITION;};v2f vert (a2v v) {v2f o;float4 pos = mul(UNITY_MATRIX_MV, v.vertex); float3 normal = mul((float3x3)UNITY_MATRIX_IT_MV, v.normal);  normal.z = -0.5;pos = pos + float4(normalize(normal), 0) * _Outline;o.pos = mul(UNITY_MATRIX_P, pos);return o;}float4 frag(v2f i) : SV_Target { return float4(_OutlineColor.rgb, 1);               }ENDCG}Pass {Tags { "LightMode"="ForwardBase" }Cull BackCGPROGRAM#pragma vertex vert#pragma fragment frag#pragma multi_compile_fwdbase#include "UnityCG.cginc"fixed4 _Color;sampler2D _MainTex;float4 _MainTex_ST;struct a2v {float4 pos : POSITION;float2 texcoord : TEXCOORD0;}; struct v2f {float4 pos : SV_POSITION;half2 texcoord : TEXCOORD0;};v2f vert (a2v v) {v2f o;o.pos = mul( UNITY_MATRIX_MVP, v.pos);o.texcoord = TRANSFORM_TEX (v.texcoord, _MainTex);return o;}fixed4 frag(v2f i) : SV_Target {fixed4 col = tex2D (_MainTex, i.texcoord);col *= _Color;                return col;            }ENDCG}}FallBack Off}

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