100 lines
2.1 KiB
Plaintext
100 lines
2.1 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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Shader "Hidden/X-PostProcessing/Glitch/ScanLineJitter"
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{
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HLSLINCLUDE
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#include "../../../Shaders/XPostProcessing.hlsl"
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#pragma shader_feature USING_FREQUENCY_INFINITE
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uniform half3 _Params;
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#define _Amount _Params.x
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#define _Threshold _Params.y
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#define _Frequency _Params.z
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float randomNoise(float x, float y)
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{
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return frac(sin(dot(float2(x, y), float2(12.9898, 78.233))) * 43758.5453);
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}
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half4 Frag_Horizontal(VaryingsDefault i): SV_Target
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{
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half strength = 0;
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#if USING_FREQUENCY_INFINITE
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strength = 1;
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#else
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strength = 0.5 + 0.5 * cos(_Time.y * _Frequency);
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#endif
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float jitter = randomNoise(i.texcoord.y, _Time.x) * 2 - 1;
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jitter *= step(_Threshold, abs(jitter)) * _Amount * strength;
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half4 sceneColor = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, frac(i.texcoord + float2(jitter, 0)));
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return sceneColor;
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}
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half4 Frag_Vertical(VaryingsDefault i): SV_Target
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{
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half strength = 0;
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#if USING_FREQUENCY_INFINITE
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strength = 1;
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#else
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strength = 0.5 + 0.5 * cos(_Time.y * _Frequency);
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#endif
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float jitter = randomNoise(i.texcoord.x, _Time.x) * 2 - 1;
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jitter *= step(_Threshold, abs(jitter)) * _Amount * strength;
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half4 sceneColor = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, frac(i.texcoord + float2(0, jitter)));
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return sceneColor;
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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_Horizontal
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ENDHLSL
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}
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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_Vertical
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ENDHLSL
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}
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}
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}
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