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Question by oroora6_unity · Apr 17, 2018 at 12:21 AM · shadermathshaderlabrepeathlsl

Mathf.Repeat in ShaderLab?

Hello, i looked around but couldn't find a shader intrinsic function that does what mathf.repeat does. Do you know if there is one?

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Answer by Bunny83 · Apr 17, 2018 at 11:58 AM

There are several solutions:

  • fmod

  • frac

  • modf

  • floor

Note while fmod and modf directly returns the remainder, frac has to be used like this:

 num = frac(num/range) * range;

floor could be used like this:

 num /= range;
 num = (num - floor(num)) * range;

Though fmod would be the simplest implementation

 num = fmod(num, range);


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