64 lines
1.4 KiB
Text
64 lines
1.4 KiB
Text
Shader "Unlit/CircleShadow_Shader"
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{
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Properties
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{
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[HDR]
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_Color("Color", Color)=(0, 0, 0, 1)
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_Density("Density", Range(0, 1))=1
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_Rad("Radius", Float)=1
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}
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SubShader
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{
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Tags { "RenderType"="Transparent" "Queue"="Transparent" }
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Blend SrcAlpha OneMinusSrcAlpha
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LOD 100
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Pass
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{
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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// make fog work
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#pragma multi_compile_fog
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#include "UnityCG.cginc"
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struct appdata
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{
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float4 vertex : POSITION;
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float2 uv : TEXCOORD0;
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};
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struct v2f
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{
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float2 uv : TEXCOORD0;
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UNITY_FOG_COORDS(1)
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float4 vertex : SV_POSITION;
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};
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float4 _Color;
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float _Density;
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float _Rad;
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v2f vert (appdata v)
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{
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v2f o;
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o.vertex = UnityObjectToClipPos(v.vertex);
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o.uv = v.uv;
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UNITY_TRANSFER_FOG(o,o.vertex);
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return o;
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}
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fixed4 frag (v2f i) : SV_Target
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{
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_Density /= 2;
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float2 centeredUV = i.uv - 0.5f;
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float radialMask = 1-smoothstep(_Density, 1-_Density, 1/_Rad*length(centeredUV));
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return fixed4(_Color.rgb, radialMask*_Color.a);
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}
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ENDCG
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}
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}
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}
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