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标题: 新手教程：shader实现描边轮廓边框效果 [打印本页]

作者: 409655136 时间: 2016-6-23 11:16
标题: 新手教程：shader实现描边轮廓边框效果

Shader "Outlined/Silhouetted Diffuse" {
      Properties {
         _Color ("Main Color", Color) = (1,1,1,1)
         _OutlineColor ("Outline Color", Color) = (0,0,0,1)  //改变这个能改变轮廓边的颜色
         _Outline ("Outline width", Range (0.0, 0.03)) = 0.008 //改变这个能改变轮廓边的粗细
         _MainTex ("Base (RGB)", 2D) = "white" { }
      }

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) {
      // just make a copy of incoming vertex data but scaled according to normal direction
      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;
}  //Unity3D教程手册：www.unitymanual.com
ENDCG

      SubShader {
         Tags { "Queue" = "Transparent" }

         // note that a vertex shader is specified here but its using the one above
         Pass {
            Name "OUTLINE"
            Tags { "LightMode" = "Always" }
            Cull Off
            ZWrite Off
            ZTest Always
            ColorMask RGB // alpha not used

            // you can choose what kind of blending mode you want for the outline
            Blend SrcAlpha OneMinusSrcAlpha // Normal
            //Blend One One // Additive
            //Blend One OneMinusDstColor // Soft Additive
            //Blend DstColor Zero // Multiplicative
            //Blend DstColor SrcColor // 2x Multiplicative

CGPROGRAM
#pragma vertex vert
#pragma fragment frag

half4 frag(v2f i) :COLOR {
      return i.color;
}
ENDCG
         }

         Pass {
            Name "BASE"
            ZWrite On
            ZTest LEqual
            Blend SrcAlpha OneMinusSrcAlpha
            Material {
                  Diffuse [_Color]
                  Ambient [_Color]
            }
            Lighting On
            SetTexture [_MainTex] {
                  ConstantColor [_Color]
                  Combine texture * constant
            }
            SetTexture [_MainTex] {
                  Combine previous * primary DOUBLE
            }  //Unity3D教程手册：www.unitymanual.com
         }
      }

      SubShader {
         Tags { "Queue" = "Transparent" }

         Pass {
            Name "OUTLINE"
            Tags { "LightMode" = "Always" }
            Cull Front
            ZWrite Off
            ZTest Always
            ColorMask RGB

            // you can choose what kind of blending mode you want for the outline
            Blend SrcAlpha OneMinusSrcAlpha // Normal
            //Blend One One // Additive
            //Blend One OneMinusDstColor // Soft Additive
            //Blend DstColor Zero // Multiplicative
            //Blend DstColor SrcColor // 2x Multiplicative

            CGPROGRAM
            #pragma vertex vert
            #pragma exclude_renderers gles xbox360 ps3
            ENDCG
            SetTexture [_MainTex] { combine primary }
         }  //Unity3D教程手册：www.unitymanual.com

         Pass {
            Name "BASE"
            ZWrite On
            ZTest LEqual
            Blend SrcAlpha OneMinusSrcAlpha
            Material {
                  Diffuse [_Color]
                  Ambient [_Color]
            }
            Lighting On
            SetTexture [_MainTex] {
                  ConstantColor [_Color]
                  Combine texture * constant
            }
            SetTexture [_MainTex] {
                  Combine previous * primary DOUBLE
            }
         }
      }

      Fallback "Diffuse"
}

作者: 毛毛虫 时间: 2016-8-30 10:12
谢谢分享，我先试试好用不

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