farazzshaikh / glnoise

A collection of GLSL noise functions for use with WebGL with an easy to use API.

⚒️ Work

farazshaikh.com

📖 Blog

blog.farazshaikh.com

👷‍♂️ Hire me

[email protected]

glnoise's Issues

New noise functions

You may want to have a look at the repo https://github.com/stegu/psrdnoise/ for a set of modern improved noise functions by me and Ian McEwan. These are both better and faster than the functions we published in ashima/webgl-noise, and they include code for computing the analytical derivative of the noise, which means that "flow noise" by Perlin and Neyret is now very easy to implement in 2D and 3D (the 3D version being an innovation of ours), and the "curl noise" function you include in your library is obsolete. Compared to finite differences, the analytical derivatives require only a small fraction of the work to compute.

Like the webgl-noise functions, the new functions are still compatible with WebGL 1.0 (no integer math) for maximum portability. Furthermore, I made a WGSL port for the upcoming WebGPU platform, and a GLSL version of 2D noise that works with "mediump". Most other noise functions have problems with mediump. Procedural texturing is really very hard to use with only mediump precision for all attributes and uniforms, but the noise function as such copes with 16-bit half-floats.

Incidentally, the patent on Perlin's original algorithm for Simplex Noise has now expired, so there is no need to mention it any longer. The patent claims were arguably applicable in part to the old webgl-noise functions, but not to the new functions, although that is now a moot point. I would even argue that the patent was issued in error by the USPO and would have been invalidated on a challenge or as a result of any actual litigation. Specifically, its primary claim (that simplex noise lacks grid artifacts and/or is visually isotropic) is demonstrably false, which invalidates all dependent claims and thereby the entire patent. Again, because the patent finally expired in January 2022, this is now moot.

Demos don't work

I think the demo can't resolve 'three' ...

Perlin and simplex noises (fbm) gets abruptly cut off on Android devices.

As per title, looks like the lower heights for perlin and simplex noises gets all cutted off on mobile devices.

Ridge noise does not work at all (displays a black plane if I switch on 2d mode)

Using a OnePlus 6T with Android 10

Nextjs throws Module not found: Can't resolve 'fs'

**This problem is not because of glNoise ** - its because I'm not sure how to run glNoise in a client side component in nextjs (v13+) since it's using the 'fs' module.