Richard Zink 460b7cfd6c Replace white noise with Perlin-style smooth noise ...

The previous noise.png was random pixels (gradient 0.064 per
step), which produces grainy static when sampled at fine octaves
instead of fluffy clouds. New noise uses 4 octaves of bilinear-
interpolated value noise with Perlin's quintic fade curve, giving
a much lower gradient (0.012) so multi-octave sampling produces
soft cloud shapes.

2026-10-07 19:49:45 +02:00

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