Advanced Three.js Post-Processing Techniques

July 4, 2026

WebGL5 min read

Adding bloom, chromatic aberration, and noise to your React Three Fiber scenes for that premium cinematic feel.

A raw Three.js render is technically correct and emotionally flat. What separates a tech demo from a premium, cinematic experience is post-processing — the layer of effects applied after the scene renders, the same stage where film gets its color and mood. Used carefully, it is the difference between "3D on a website" and "an experience you remember."

The effects that matter

A few well-chosen passes do most of the work. Bloom gives light sources a soft, luminous glow. Chromatic aberration adds a subtle lens-like fringe that reads as expensive optics. Film grain and noise break up flat gradients and stop the render from looking sterile.

  • Bloom for luminous highlights and depth
  • Chromatic aberration for a cinematic lens feel
  • Subtle noise/grain to avoid banding on gradients
  • Vignette to guide the eye toward the center of interest

The cost, and how to control it

Every post-processing pass is another full-screen render, and they add up fast on mobile GPUs. The craft is knowing which effects earn their frame budget — combining passes where possible, scaling them down on weaker devices, and never letting the polish cost you the performance.

Cinematic, responsibly

Post-processing is where taste meets engineering. Applied with discipline, it delivers the premium feel clients want without breaking the frame rate — exactly the balance we strike in NexisDigital's WebGL work.