61 lines
1.8 KiB
Plaintext
61 lines
1.8 KiB
Plaintext
Shader "Custom/BlackCircleWithOutline"
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{
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Properties
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{
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_InnerColor("Inner Color", Color) = (0,0,0,0.9) // 内部颜色（黑色）
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_OutlineColor("Outline Color", Color) = (1,1,1,0.9) // 轮廓颜色（白色）
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_Thickness("Thickness", Range(0, 0.5)) = 0.05 // 圆圈轮廓厚度
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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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LOD 100
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Blend SrcAlpha OneMinusSrcAlpha // 开启透明混合
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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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#include "UnityCG.cginc"
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struct appdata_t {
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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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float2 uv : TEXCOORD0;
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float4 vertex : SV_POSITION;
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};
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fixed4 _InnerColor; // 内部颜色
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fixed4 _OutlineColor; // 轮廓颜色
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float _Thickness; // 圆圈轮廓厚度
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v2f vert(appdata_t v) {
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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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return o;
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}
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fixed4 frag(v2f i) : SV_Target {
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float2 center = float2(0.5, 0.5); // 圆心
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float dist = distance(i.uv, center); // 当前像素到圆心的距离
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if (dist < (0.5 - _Thickness)) {
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return _InnerColor; // 圆心内显示黑色
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}
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else if (dist <= 0.5) {
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return _OutlineColor; // 在轮廓区域显示白色
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}
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// 外部区域返回完全透明
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return float4(0, 0, 0, 0);
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}
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ENDCG
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}
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}
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} |