[Shader 着色器]边缘高光

最新推荐文章于 2022-08-06 22:45:31 发布

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本文分享了一种使用Unity Shader实现卡通轮廓效果的方法。通过自定义Shader代码，调整轮廓颜色及宽度，实现对模型边缘的突出显示。适用于游戏开发中追求特殊视觉风格的需求。

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图片：未命名.jpg

图片：QQ截图20120830125443.png

先上图，等会再将研究心得发布，如果想一起研究我有源代码，要的回复
附上shader代码：

Shader "Toon/Basic Outline" {
   Properties {
   _Color ("Main Color", Color) = (.5,.5,.5,1)
   _OutlineColor ("Outline Color", Color) = (0,1,0,1)
   _Outline ("Outline width", Range (0.005, 0.01)) = .001
   _MainTex ("Texture", 2D) = "white" {}
   _BumpMap ("Bumpmap", 2D) = "bump" {}
   }

   CGINCLUDE
   #include "UnityCG.cginc"

   struct appdata {
   float4 vertex : POSITION;
   float3 normal : NORMAL;
   };

   struct v2f {
   float4 pos : POSITION;
   float4 color : COLOR;
   };

   uniform float _Outline;
   uniform float4 _OutlineColor;

   v2f vert(appdata v) {
   v2f o;
   o.pos = mul(UNITY_MATRIX_MVP, v.vertex);

   float3 norm = mul ((float3x3)UNITY_MATRIX_IT_MV, v.normal);
   float2 offset = TransformViewToProjection(norm.xy);

   o.pos.xy += offset * o.pos.z * _Outline;
   o.color = _OutlineColor;
   return o;
   }
   ENDCG

   SubShader {
   Tags { "RenderType"="Opaque" }
   UsePass "Toon/Basic/BASE"
   Pass {
   Name "OUTLINE"
   Tags { "LightMode" = "Always" }
   Cull Front
   ZWrite On
   ColorMask RGB
   Blend SrcAlpha OneMinusSrcAlpha

   CGPROGRAM
   #pragma vertex vert
   #pragma fragment frag
   half4 frag(v2f i) :COLOR { return i.color; }
   ENDCG
   }
   }

   SubShader {
   Tags { "RenderType"="Opaque" }
   UsePass "Toon/Basic/BASE"
   Pass {
   Name "OUTLINE"
   Tags { "LightMode" = "Always" }
   Cull Front
   ZWrite On
   ColorMask RGB
   Blend SrcAlpha OneMinusSrcAlpha

   CGPROGRAM
   #pragma vertex vert
   #pragma exclude_renderers shaderonly
   ENDCG
   SetTexture [_MainTex] { combine primary }
   }
   }
SubShader {
   Tags { "RenderType" = "Opaque" }
   CGPROGRAM
   #pragma surface surf Lambert
   struct Input {
   float2 uv_MainTex;
   float2 uv_BumpMap;
   };
   sampler2D _MainTex;
   sampler2D _BumpMap;
   void surf (Input IN, inout SurfaceOutput o) {
   o.Albedo = tex2D (_MainTex, IN.uv_MainTex).rgb;
   o.Normal = UnpackNormal (tex2D (_BumpMap, IN.uv_BumpMap));
   }
   ENDCG
   }

   Fallback "Diffuse"
}