custommods
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//Thanks to Jessie for dithering
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float Bayer2 (vec2 c) { c = 0.5 * floor(c); return fract(1.5 * fract(c.y) + c.x); }
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float Bayer4 (vec2 c) { return 0.25 * Bayer2 (0.5 * c) + Bayer2(c); }
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float Bayer8 (vec2 c) { return 0.25 * Bayer4 (0.5 * c) + Bayer2(c); }
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float Bayer16 (vec2 c) { return 0.25 * Bayer8 (0.5 * c) + Bayer2(c); }
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float Bayer32 (vec2 c) { return 0.25 * Bayer16 (0.5 * c) + Bayer2(c); }
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float Bayer64 (vec2 c) { return 0.25 * Bayer32 (0.5 * c) + Bayer2(c); }
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float Bayer128(vec2 c) { return 0.25 * Bayer64 (0.5 * c) + Bayer2(c); }
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float Bayer256(vec2 c) { return 0.25 * Bayer128(0.5 * c) + Bayer2(c); }
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