73 lines
1.5 KiB
Text
73 lines
1.5 KiB
Text
Shader "Unlit/ParticleDot_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)=(1, 0, 0, 1)
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_Rad("Radius", Float)=1
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_Density("Density", Range(-10, 1))=1
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}
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SubShader
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{
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Tags { "Queue" = "Transparent" "RenderType" = "Transparent" }
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Blend SrcAlpha One
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Cull Off
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ZWrite Off
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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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float4 vertexColor : COLOR;
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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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float4 vertexColor : COLOR;
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};
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float4 _Color;
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float _Rad;
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float _Density;
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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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o.vertexColor = v.vertexColor;
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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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_Rad*=2;
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float2 centeredUV = i.uv + float2(-0.5, -0.5);
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float circle = length(centeredUV*_Rad);
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circle = 1-smoothstep(min(1, _Density), 1, circle);
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return float4(_Color.rgb, circle*i.vertexColor.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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