CozyECS · GPU particles

Every particle is an ECS entity with Position and Velocity. One JavaScript kernel moves them, on the CPU or as a WebGPU compute shader.

Run the kernel on

Particles

–frames per second

–main-thread ms / frame

–entities

–kernel backend

–entity memory (RAM)

–bytes per entity

–

Main-thread time is what the simulation costs your game loop. On the GPU the work runs in parallel and the particles are drawn straight from the kernel's buffer, so they never travel back to JavaScript.

Components

Position { x: f32, y: f32 } Velocity { vx: f32, vy: f32 }

Archetype table · Position + Velocity

–

Systems · world.update() tick 0

particlesupdate–
kernelSystem
watchrender–
reads 5 entities
renderrender–
WebGPU draw

Watched entities

entity	x	y	speed

No shader code: kernelSystem() parses this function and compiles it to WGSL and to a JS loop. Pointer position and strength arrive as uniforms (u).