Fast & Gorgeous Erosion Filter Explained
More info and links in the companion blog post here:
https://blog.runevision.com/2026/03/f...
Shadertoy with animated parameters:
https://www.shadertoy.com/view/wXcfWn
Shadertoy with mouse-painting of terrain:
https://www.shadertoy.com/view/sf23W1
Josh's video about two other techniques:
• Better Mountain Generators That Aren't Per...
More info on what I've been up to here:
https://blog.runevision.com
Find me on social media:
https://bsky.app/profile/runevision.b...
https://mastodon.gamedev.place/@runev...
Join my Discord server:
/ discord
Background music:
"Black Swan" by Quincas Moreira
"Gently, Onwards" by ELPHNT
"June" by Bobby Richards
"A Mystic Experience" by Unicorn Heads
"In the Atmosphere" by Bad Snacks
"After All" by Geographer
"Traversing" by Godmode
"Decimate" by Jeremy Blake
"Alone" by Emmit Fenn
"Knowpe" by Noir Et Blanc Vie
"Arp Bounce" by Geographer
"Final Girl" by Jeremy Blake
Chapters:
00:00 Introduction
03:03 Chapter I: Discovery
03:22 the origin
05:22 the basic idea
06:59 generating stripes
09:50 preserving peaks
12:41 lacking usability
14:05 Part II: Refinement
14:16 quick basics of analytical derivatives
16:04 fixes and improvements
19:48 the ugly secret
22:15 Part III: Evolution
22:22 fading revisited
26:15 scope creep
27:11 three techniques for crispness
27:38 stacked fading
29:20 normalized gullies
31:11 straight gullies
33:25 final touches