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52 lines
1.4 KiB
52 lines
1.4 KiB
3 years ago
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// Colorful FX - Unity Asset
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// Copyright (c) 2015 - Thomas Hourdel
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// http://www.thomashourdel.com
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#include "UnityCG.cginc"
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#include "./Colorful.cginc"
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sampler2D _MainTex;
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half4 _Params; // x: speed, y: intensity, z: maxDisplace, w: yuv offset
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inline float offset(float x, float levels)
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{
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return floor(x * levels) / levels;
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}
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inline float2 offset(float2 x, float levels)
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{
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return floor(x * levels) / levels;
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}
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half4 frag_tearing(v2f_img i) : SV_Target
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{
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float time = mod(_Time.y * _Params.x, 32.0);
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float change = simpleNoise(offset(i.uv.yy, 16.0) + 150.0 * offset(time, 4.0));
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float t = 5.0 * offset(time, 16.0 * change);
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float vt = 0.5 * simpleNoise(offset(i.uv.yy + t, 11.0));
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vt += 0.5 * simpleNoise(offset(i.uv.yy + t, 7.0));
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vt = vt * 2.0 - 1.0;
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vt = sign(vt) * saturate((abs(vt) - (1.0 - _Params.y)) / _Params.y);
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half2 texcoords = i.uv;
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texcoords = saturate(texcoords + half2(_Params.z * vt, 0.0));
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#ifdef ALLOW_FLIPPING
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half tt = offset(time, 8.0);
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half rnd = simpleNoise(half2(tt, tt));
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texcoords.y = (rnd > lerp(1.0, 0.975, _Params.y)) ? 1.0 - texcoords.y : texcoords.y;
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#endif
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half3 color = tex2D(_MainTex, texcoords).rgb;
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#ifdef YUV_COLOR_BLEEDING
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half3 yuv = RGBtoYUV(color);
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yuv.y /= 1.0 - 3.0 * abs(vt) * saturate(_Params.w - vt);
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yuv.z += 0.125 * vt * saturate(vt - _Params.w);
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return half4(YUVtoRGB(yuv), 1.0);
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#else
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return half4(color, 1.0);
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#endif
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}
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