Procedural Textures with Hash Functions

Posted by douglasorr on Monday April 14, 2025 @03:02AM
from the douglasorr.github.io dept.

https://douglasorr.github.io/2025-04-hash-textures/article.html

( 5 comments | on HN )

Re:Procedural Textures with Hash Functions by magicalhippo on Friday April 18, 2025 @03:45AM (#43725921)

Reminded me of the oldskool plasma effect[1], but this is even simpler given the lack of lookup tables. Neat!

Note, demo requires WebGL so won't show in Firefox.

[1]: https://invisiblewater.github.io/MattGraphicsTutorials/effec...

[ Parent | on HN ]

Re:Procedural Textures with Hash Functions by RunningDroid on Friday April 18, 2025 @11:51AM (#43729223)

> Note, demo requires WebGL so won't show in Firefox.

Works for me in Firefox on mobile?

[ Parent | on HN ]

Re:Procedural Textures with Hash Functions by magicalhippo on Friday April 18, 2025 @12:40PM (#43729685)

Ah maybe I disabled it manually. Was confusing it with WebGPU when I saw the complaints in console about not being available[1].

[1]: https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Exp...

[ Parent | on HN ]

Re:Procedural Textures with Hash Functions by exDM69 on Friday April 18, 2025 @04:53AM (#43726240)

Hey, this might be exactly what I'm looking for!

To test some 3d graphics code, I need to generate a lot of textures. From a technical standpoint, just a single color texture would do but having some recognizable patterns that are easy to distinguish by eye would be useful to check for correctness and glitches.

Thanks for sharing.

[ Parent | on HN ]

Re:Procedural Textures with Hash Functions by tanepiper on Friday April 18, 2025 @05:20AM (#43726371)

Very useful - I'm working on a 3D space engine (https://youtu.be/dJ7tK-M3he0?si=7U-5u1-raR6WFRQ1) and started with CPU textures before moving to GPU - some of the patterns for procedural generation aren't quite right (but my focus has been on the physics and lighting for now)

[ Parent | on HN ]