72 lines
1.6 KiB
Plaintext
72 lines
1.6 KiB
Plaintext
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//----------------------------------------------------------------------------------------------------------
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// X-PostProcessing Library
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// https://github.com/QianMo/X-PostProcessing-Library
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// Copyright (C) 2020 QianMo. All rights reserved.
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// Licensed under the MIT License
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// You may not use this file except in compliance with the License.You may obtain a copy of the License at
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// http://opensource.org/licenses/MIT
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//----------------------------------------------------------------------------------------------------------
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// reference : https://www.shadertoy.com/view/4d2Xzw
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Shader "Hidden/X-PostProcessing/BokehBlur"
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{
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HLSLINCLUDE
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#include "../../../Shaders/StdLib.hlsl"
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#include "../../../Shaders/XPostProcessing.hlsl"
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half4 _GoldenRot;
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half4 _Params;
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#define _Iteration _Params.x
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#define _Radius _Params.y
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#define _PixelSize _Params.zw
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half4 BokehBlur(VaryingsDefault i)
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{
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half2x2 rot = half2x2(_GoldenRot);
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half4 accumulator = 0.0;
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half4 divisor = 0.0;
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half r = 1.0;
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half2 angle = half2(0.0, _Radius);
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for (int j = 0; j < _Iteration; j++)
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{
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r += 1.0 / r;
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angle = mul(rot, angle);
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half4 bokeh = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, float2(i.texcoord + _PixelSize * (r - 1.0) * angle));
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accumulator += bokeh * bokeh;
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divisor += bokeh;
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}
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return accumulator / divisor;
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}
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half4 Frag(VaryingsDefault i): SV_Target
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{
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return BokehBlur(i);
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}
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ENDHLSL
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SubShader
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{
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Cull Off ZWrite Off ZTest Always
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Pass
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{
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HLSLPROGRAM
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#pragma vertex VertDefault
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#pragma fragment Frag
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ENDHLSL
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}
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}
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}
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