postfx-effects

Post-Processing Effects

Cinematic and stylistic effects using @react-three/postprocessing.

Quick Start

npm install @react-three/postprocessing postprocessing

import { Canvas } from '@react-three/fiber';
import { EffectComposer, ChromaticAberration, Vignette, Noise } from '@react-three/postprocessing';

function CinematicScene() {
  return (
    <Canvas>
      <Scene />
      <EffectComposer>
        <ChromaticAberration offset={[0.002, 0.002]} />
        <Vignette darkness={0.5} offset={0.3} />
        <Noise opacity={0.05} />
      </EffectComposer>
    </Canvas>
  );
}

Core Effects

Chromatic Aberration

RGB channel separation for lens distortion or glitch effects.

import { ChromaticAberration } from '@react-three/postprocessing';
import { BlendFunction } from 'postprocessing';
import { Vector2 } from 'three';

// Subtle cinematic fringing
function SubtleChromaticAberration() {
  return (
    <ChromaticAberration
      offset={new Vector2(0.001, 0.001)}
      radialModulation
      modulationOffset={0.2}
    />
  );
}

// Intense glitch effect
function GlitchChromaticAberration() {
  const offsetRef = useRef();

  useFrame(({ clock }) => {
    if (offsetRef.current) {
      const glitch = Math.random() > 0.95 ? 0.01 : 0.002;
      offsetRef.current.offset.set(glitch, glitch * 0.5);
    }
  });

  return (
    <ChromaticAberration
      ref={offsetRef}
      offset={new Vector2(0.002, 0.002)}
      blendFunction={BlendFunction.NORMAL}
    />
  );
}

Vignette

Darkened edges for focus and cinematic framing.

import { Vignette } from '@react-three/postprocessing';

// Soft cinematic vignette
function CinematicVignette() {
  return (
    <Vignette
      offset={0.3}      // Distance from center before darkening
      darkness={0.5}    // How dark edges become
      eskil={false}     // Use natural vignette formula
    />
  );
}

// Harsh spotlight effect
function SpotlightVignette() {
  return <Vignette offset={0.1} darkness={0.9} eskil={true} />;
}