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I was messing around with Perlin noise to create a random  topographical map, combining multiple pixel layers with different octaves of said noise.

I noticed that there's a barely visible ray coming from top left corner of the image going at a 45 degree angle down all the way across.

I believe this is a bug in Perlin noise code, since the ray becomes more visible the more layers of Perlin noise you combine in one image.

Example here:

https://i.imgur.com/IeMTDWd.png

 

  • 3 weeks later...

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