前言：每日记录自己学习Shader的心得和体会，小弟才疏学浅，如有错误的地方，欢迎大佬们指正，感谢~
shader代码
Shader "WCL/Wireframe" {
Properties {
_Color("Color",Color)=(1.0,1.0,1.0,1.0)
_EdgeColor("Edge Color",Color)=(1.0,1.0,1.0,1.0)
_Width("Width",Range(0,1))=0.2
}
SubShader {
Tags {
"Queue"="Transparent"
"IgnoreProjector"="True"
"RenderType"="Transparent"
}
Blend SrcAlpha OneMinusSrcAlpha
LOD 200
Cull Front
zWrite off
Pass {
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma target 3.0
#include "UnityCG.cginc"
struct a2v {
half4 uv : TEXCOORD0 ;
half4 vertex : POSITION ;
};
struct v2f{
half4 pos : SV_POSITION ;
half4 uv : TEXCOORD0 ;
};
fixed4 _Color;
fixed4 _EdgeColor;
float _Width;
v2f vert(a2v v)
{
v2f o;
o.uv = v.uv;
o.pos=UnityObjectToClipPos(v.vertex);
return o;
}
fixed4 frag(v2f i) : COLOR
{
fixed4 col;
float lx = step(_Width, i.uv.x);
float ly = step(_Width, i.uv.y);
float hx = step(i.uv.x, 1.0 - _Width);
float hy = step(i.uv.y, 1.0 - _Width);
col = lerp(_EdgeColor, _Color, lx*ly*hx*hy);
return col;
}
ENDCG
}
Blend SrcAlpha OneMinusSrcAlpha
LOD 200
Cull Back
zWrite off
Pass {
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma target 3.0
#include "UnityCG.cginc"
struct a2v {
half4 uv : TEXCOORD0 ;
half4 vertex : POSITION ;
};
struct v2f{
half4 pos : SV_POSITION ;
half4 uv : TEXCOORD0 ;
};
fixed4 _Color;
fixed4 _EdgeColor;
float _Width;
v2f vert(a2v v)
{
v2f o;
o.uv = v.uv;
o.pos=UnityObjectToClipPos(v.vertex);
return o;
}
fixed4 frag(v2f i) : COLOR
{
fixed4 col;
float lx = step(_Width, i.uv.x);
float ly = step(_Width, i.uv.y);
float hx = step(i.uv.x, 1.0 - _Width);
float hy = step(i.uv.y, 1.0 - _Width);
col = lerp(_EdgeColor, _Color, lx*ly*hx*hy);
return col;
}
ENDCG
}
}
FallBack "Diffuse"
}
