GPGPU Particle Simulation with FBO Ping-Pong

What this builds

A production-grade GPU-computed particle simulation using Three.js's GPUComputationRenderer. All particle state (position, velocity, life, color) lives in floating-point textures on the GPU. Simulation shaders run as full-screen fragment passes that read the previous frame's texture and write the next frame's state (ping-pong). The CPU never touches per-particle data, allowing 100k-1M+ particles at 60fps.

• FBO ping-pong architecture: simulation runs entirely on the GPU via render-to-texture
• GPUComputationRenderer manages texture variables, dependencies, and double-buffering
• Position and velocity stored as RGBA float textures (x, y, z, w per texel = per particle)
• Curl noise flow field for organic, divergence-free particle motion
• Attractor/repulsor forces (point, line, mesh surface) with configurable strength and falloff
• Mouse/pointer interaction injected as a uniform-driven force emitter
• Particle rendering via Points with a vertex shader that samples the position texture
• Configurable particle lifecycle (birth, death, respawn) via the life/age channel
• Proper disposal of all GPU resources (render targets, textures, materials)