How to blur images at 20,000 FPS (or 50 microseconds)

Acerola explains various image blurring algorithms, from box and Gaussian blur to high-performance Kawase and dual Kawase blurs on the GPU.

Blurring an image is a great place to start with learning shaders, but not for the reasons you'd expect! CHECK THIS OUT: dithering.rocks/paper Topics covered in this video: Box blur, race conditions, gaussian blur, separable convolutions, gpu texture sampling, kawase blur, upsample blur, dual kawase blur, judging blur quality Support me on Patreon! patreon.com/acerola_t Socials: BlueSky: bsky.app/profile/acerola.gg Twitter: twitter.com/Acerola_t Twitch: twitch.tv/acerola Discord: discord.gg/FxGQvbfm6Y Code: github.com/GarrettGunnell/AcerolaFX-Godot/tree/main/Effects/… Music: Afternoon Break - Persona 3 OST Boy In The Windmill - Higurashi OST Junes Theme - Persona 4 OST Shipmeister's Shanty - Kingdom Hearts II OST Digital Root - 999 OST Null Moon - Silent Hill 2 OST Underground Club - VA11-HALL-A OST Tough Decision - Zero Time Dilemma OST Midori Eyes - Paradise Killer OST During The Test - Persona 3 OST Theme Of Deduction (Beyond The Logic) - The Great Ace Attorney OST Overture To Pursuit - The Great Ace Attorney OST Persuasion -4th- - The Hundred Line OST Like A Dream Come True - Persona 4 OST Story - Tetris Magical Challenge OST Placidity - Virtue's Last Reward OST Talk!Talk! - The Hundred Line OST Cross Examination (Moderato) - The Great Ace Attorney OST Straying Suspense - The Great Ace Attorney OST Cross Examination (Allegro) - The Great Ace Attorney OST Closing Argument - The Great Ace Attorney OST Yin-Yang - Paranormasight OST Mocking Bop - Paranormasight OST Crime Busting With A Smile! - Paranormasight OST Recollection - 999 OST Won The Case - The Great Ace Attorney OST Hundred Days (ver. 100) - The Hundred Line OST Lake - Pokemon Diamond OST Prof. Omochao - Sonic Adventure 2 OST True - Silent Hill 2 OST Ode To Heroes - Metaphor ReFantazio OST Thanks for watching! No Generative AI or LLMs were used in the making of this video. This video is dedicated to my friend, Alotryx. #acerola #gamedev #godot #shaders