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76 wiersze
2.0 KiB
76 wiersze
2.0 KiB
Shader "SaberShad/RadiusBlur"
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{
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Properties
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{
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[HideInInspector]_MainTex ("Texture", 2D) = "white" {}
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// 径向模糊数据 xy分量代表径向中心点 z分量代表偏移
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_RadiusData("Radius Data", Vector) = (0.5, 0.5, 0.0, 1.0)
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// y分量代表迭代次数的倒数 例如迭代30次就是1/30
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_RadiusIterationData("Radius Iteration", Vector) = (1.0, 1.0, 0.0, 0.0)
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}
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SubShader
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{
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CGINCLUDE
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#include "UnityCG.cginc"
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sampler2D _MainTex;
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float4 _MainTex_ST;
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float4 _MainTex_TexelSize;
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half3 _RadiusData;
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half2 _RadiusIterationData;
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struct a2f_rb
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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_rb
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{
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float4 vertex : SV_POSITION;
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float2 texcoord: TEXCOORD0;
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};
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v2f_rb RadiusBlurVertex(a2f_rb v)
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{
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v2f_rb o;
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o.vertex = UnityObjectToClipPos(v.vertex);
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o.texcoord = v.uv;
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// #if UNITY_UV_STARTS_AT_TOP
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// o.texcoord = o.texcoord * float2(1.0, -1.0) + float2(0.0, 1.0);
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// #endif
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o.texcoord = TRANSFORM_TEX(o.texcoord, _MainTex);
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return o;
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}
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half4 RadiusBlurFragment(v2f_rb i): SV_Target
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{
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half2 radiusRange = (_RadiusData.xy - i.texcoord.xy) * _RadiusData.z;
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half4 color = 0.0;
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[unroll(30)]
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for(int j = 0; j < _RadiusIterationData.x; j++)
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{
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color += tex2D(_MainTex, i.texcoord);
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i.texcoord += radiusRange;
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}
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return color * _RadiusIterationData.y;
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}
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ENDCG
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Cull Off ZWrite Off ZTest Always
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Pass
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{
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CGPROGRAM
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#pragma vertex RadiusBlurVertex
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#pragma fragment RadiusBlurFragment
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ENDCG
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}
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}
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}
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