72 lines
1.4 KiB
Plaintext
72 lines
1.4 KiB
Plaintext
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/*
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Author:gzg
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Date:2019-08-20
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Desc:这个Shader是用于,主界面右上角圆形小地图处理
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*/
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Shader "Ares/UI/CircleClip"
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{
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Properties
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{
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_Color("BaseColor",Color) = (1,1,1,1)
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_MainTex ("Base (RGB)", 2D) = "white" {}
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_Circle ("Center & Size", Vector) = (0.5,0.5,0.13,0.13)
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_Reverse("Is Reverse (0 or 1)", float) = 1
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}
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SubShader
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{
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Tags { "RenderType"="Opaque" }
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LOD 200
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Pass
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{
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ZWrite Off
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Blend SrcAlpha OneMinusSrcAlpha,Zero OneMinusSrcAlpha
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#include "unityCG.cginc"
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uniform sampler2D _MainTex;
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uniform float4 _MainTex_ST;
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uniform float4 _Circle;
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uniform float _Reverse;
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struct INVert
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{
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float4 vertex :POSITION;
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float2 texcoord : TEXCOORD0;
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float4 color : COLOR;
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};
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struct VToF
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{
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float4 pos: POSITION;
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float2 uv : TEXCOORD0;
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float4 color : COLOR;
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};
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VToF vert(INVert v)
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{
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VToF o;
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o.pos = UnityObjectToClipPos(v.vertex);
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o.color = v.color;
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o.uv = TRANSFORM_TEX( v.texcoord, _MainTex );
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return o;
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}
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fixed4 frag(VToF vf):COLOR
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{
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fixed4 cr = tex2D(_MainTex,vf.uv);
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float2 tuv = vf.uv - _Circle.xy;
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fixed a = abs(step(tuv.x*tuv.x / (_Circle.z *_Circle.z) +tuv.y*tuv.y / (_Circle.w * _Circle.w) ,1) * cr.a - _Reverse);
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return fixed4(cr.rgb,a * vf.color.a);
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}
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ENDCG
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}
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}
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Fallback "Gonbest/FallBack/FBNothing"
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}
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