Threejs Postprocessing

import * as THREE from "three";import { EffectComposer } from "three/addons/postprocessing/EffectComposer.js";import { RenderPass } from "three/addons/postprocessing/RenderPass.js";import { UnrealBloomPass } from "three/addons/postprocessing/UnrealBloomPass.js";
// Setup composerconst composer = new EffectComposer(renderer);
// Render sceneconst renderPass = new RenderPass(scene, camera);composer.addPass(renderPass);
// Add bloomconst bloomPass = new UnrealBloomPass(  new THREE.Vector2(window.innerWidth, window.innerHeight),  1.5, // strength  0.4, // radius  0.85, // threshold);composer.addPass(bloomPass);
// Animation loop - use composer instead of rendererfunction animate() {  requestAnimationFrame(animate);  composer.render(); // NOT renderer.render()}

import { EffectComposer } from "three/addons/postprocessing/EffectComposer.js";import { RenderPass } from "three/addons/postprocessing/RenderPass.js";
const composer = new EffectComposer(renderer);
// First pass: render sceneconst renderPass = new RenderPass(scene, camera);composer.addPass(renderPass);
// Add more passes...composer.addPass(effectPass);
// Last pass should render to screeneffectPass.renderToScreen = true; // Default for last pass
// Handle resizefunction onResize() {  const width = window.innerWidth;  const height = window.innerHeight;
  camera.aspect = width / height;  camera.updateProjectionMatrix();
  renderer.setSize(width, height);  composer.setSize(width, height);}

import { UnrealBloomPass } from "three/addons/postprocessing/UnrealBloomPass.js";
const bloomPass = new UnrealBloomPass(  new THREE.Vector2(window.innerWidth, window.innerHeight),  1.5, // strength - intensity of glow  0.4, // radius - spread of glow  0.85, // threshold - brightness threshold);
composer.addPass(bloomPass);
// Adjust at runtimebloomPass.strength = 2.0;bloomPass.threshold = 0.5;bloomPass.radius = 0.8;

import { UnrealBloomPass } from "three/addons/postprocessing/UnrealBloomPass.js";import { ShaderPass } from "three/addons/postprocessing/ShaderPass.js";
// Layer setupconst BLOOM_LAYER = 1;const bloomLayer = new THREE.Layers();bloomLayer.set(BLOOM_LAYER);
// Mark objects to bloomglowingMesh.layers.enable(BLOOM_LAYER);
// Dark material for non-blooming objectsconst darkMaterial = new THREE.MeshBasicMaterial({ color: 0x000000 });const materials = {};
function darkenNonBloomed(obj) {  if (obj.isMesh && !bloomLayer.test(obj.layers)) {    materials[obj.uuid] = obj.material;    obj.material = darkMaterial;  }}
function restoreMaterial(obj) {  if (materials[obj.uuid]) {    obj.material = materials[obj.uuid];    delete materials[obj.uuid];  }}
// Custom render loopfunction render() {  // Render bloom pass  scene.traverse(darkenNonBloomed);  composer.render();  scene.traverse(restoreMaterial);
  // Render final scene over bloom  renderer.render(scene, camera);}

import { ShaderPass } from "three/addons/postprocessing/ShaderPass.js";import { FXAAShader } from "three/addons/shaders/FXAAShader.js";
const fxaaPass = new ShaderPass(FXAAShader);fxaaPass.material.uniforms["resolution"].value.set(  1 / window.innerWidth,  1 / window.innerHeight,);
composer.addPass(fxaaPass);
// Update on resizefunction onResize() {  fxaaPass.material.uniforms["resolution"].value.set(    1 / window.innerWidth,    1 / window.innerHeight,  );}

import { SMAAPass } from "three/addons/postprocessing/SMAAPass.js";
const smaaPass = new SMAAPass(  window.innerWidth * renderer.getPixelRatio(),  window.innerHeight * renderer.getPixelRatio(),);
composer.addPass(smaaPass);

import { SSAOPass } from "three/addons/postprocessing/SSAOPass.js";
const ssaoPass = new SSAOPass(  scene,  camera,  window.innerWidth,  window.innerHeight,);ssaoPass.kernelRadius = 16;ssaoPass.minDistance = 0.005;ssaoPass.maxDistance = 0.1;
composer.addPass(ssaoPass);
// Output modesssaoPass.output = SSAOPass.OUTPUT.Default;// SSAOPass.OUTPUT.Default - Final composited output// SSAOPass.OUTPUT.SSAO - Just the AO// SSAOPass.OUTPUT.Blur - Blurred AO// SSAOPass.OUTPUT.Depth - Depth buffer// SSAOPass.OUTPUT.Normal - Normal buffer

import { BokehPass } from "three/addons/postprocessing/BokehPass.js";
const bokehPass = new BokehPass(scene, camera, {  focus: 10.0, // Focus distance  aperture: 0.025, // Aperture (smaller = more DOF)  maxblur: 0.01, // Max blur amount});
composer.addPass(bokehPass);
// Update focus dynamicallybokehPass.uniforms["focus"].value = distanceToTarget;

import { FilmPass } from "three/addons/postprocessing/FilmPass.js";
const filmPass = new FilmPass(  0.35, // noise intensity  0.5, // scanline intensity  648, // scanline count  false, // grayscale);
composer.addPass(filmPass);

import { ShaderPass } from "three/addons/postprocessing/ShaderPass.js";import { VignetteShader } from "three/addons/shaders/VignetteShader.js";
const vignettePass = new ShaderPass(VignetteShader);vignettePass.uniforms["offset"].value = 1.0; // Vignette sizevignettePass.uniforms["darkness"].value = 1.0; // Vignette intensity
composer.addPass(vignettePass);

import { ShaderPass } from "three/addons/postprocessing/ShaderPass.js";import { ColorCorrectionShader } from "three/addons/shaders/ColorCorrectionShader.js";
const colorPass = new ShaderPass(ColorCorrectionShader);colorPass.uniforms["powRGB"].value = new THREE.Vector3(1.2, 1.2, 1.2); // PowercolorPass.uniforms["mulRGB"].value = new THREE.Vector3(1.0, 1.0, 1.0); // Multiply
composer.addPass(colorPass);

import { GammaCorrectionShader } from "three/addons/shaders/GammaCorrectionShader.js";
const gammaPass = new ShaderPass(GammaCorrectionShader);composer.addPass(gammaPass);

import { RenderPixelatedPass } from "three/addons/postprocessing/RenderPixelatedPass.js";
const pixelPass = new RenderPixelatedPass(6, scene, camera); // 6 = pixel size
composer.addPass(pixelPass);

import { GlitchPass } from "three/addons/postprocessing/GlitchPass.js";
const glitchPass = new GlitchPass();glitchPass.goWild = false; // Continuous glitching
composer.addPass(glitchPass);

import { HalftonePass } from "three/addons/postprocessing/HalftonePass.js";
const halftonePass = new HalftonePass(window.innerWidth, window.innerHeight, {  shape: 1, // 1 = dot, 2 = ellipse, 3 = line, 4 = square  radius: 4, // Dot size  rotateR: Math.PI / 12,  rotateB: (Math.PI / 12) * 2,  rotateG: (Math.PI / 12) * 3,  scatter: 0,  blending: 1,  blendingMode: 1,  greyscale: false,});
composer.addPass(halftonePass);

import { OutlinePass } from "three/addons/postprocessing/OutlinePass.js";
const outlinePass = new OutlinePass(  new THREE.Vector2(window.innerWidth, window.innerHeight),  scene,  camera,);
outlinePass.edgeStrength = 3;outlinePass.edgeGlow = 0;outlinePass.edgeThickness = 1;outlinePass.pulsePeriod = 0;outlinePass.visibleEdgeColor.set(0xffffff);outlinePass.hiddenEdgeColor.set(0x190a05);
// Select objects to outlineoutlinePass.selectedObjects = [mesh1, mesh2];
composer.addPass(outlinePass);

import { ShaderPass } from "three/addons/postprocessing/ShaderPass.js";
const CustomShader = {  uniforms: {    tDiffuse: { value: null }, // Required: input texture    time: { value: 0 },    intensity: { value: 1.0 },  },  vertexShader: `    varying vec2 vUv;
    void main() {      vUv = uv;      gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);    }  `,  fragmentShader: `    uniform sampler2D tDiffuse;    uniform float time;    uniform float intensity;    varying vec2 vUv;
    void main() {      vec2 uv = vUv;
      // Wave distortion      uv.x += sin(uv.y * 10.0 + time) * 0.01 * intensity;
      vec4 color = texture2D(tDiffuse, uv);      gl_FragColor = color;    }  `,};
const customPass = new ShaderPass(CustomShader);composer.addPass(customPass);
// Update in animation loopcustomPass.uniforms.time.value = clock.getElapsedTime();

const InvertShader = {  uniforms: {    tDiffuse: { value: null },  },  vertexShader: `    varying vec2 vUv;    void main() {      vUv = uv;      gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);    }  `,  fragmentShader: `    uniform sampler2D tDiffuse;    varying vec2 vUv;
    void main() {      vec4 color = texture2D(tDiffuse, vUv);      gl_FragColor = vec4(1.0 - color.rgb, color.a);    }  `,};

const ChromaticAberrationShader = {  uniforms: {    tDiffuse: { value: null },    amount: { value: 0.005 },  },  vertexShader: `    varying vec2 vUv;    void main() {      vUv = uv;      gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);    }  `,  fragmentShader: `    uniform sampler2D tDiffuse;    uniform float amount;    varying vec2 vUv;
    void main() {      vec2 dir = vUv - 0.5;      float dist = length(dir);
      float r = texture2D(tDiffuse, vUv - dir * amount * dist).r;      float g = texture2D(tDiffuse, vUv).g;      float b = texture2D(tDiffuse, vUv + dir * amount * dist).b;
      gl_FragColor = vec4(r, g, b, 1.0);    }  `,};

import { EffectComposer } from "three/addons/postprocessing/EffectComposer.js";import { RenderPass } from "three/addons/postprocessing/RenderPass.js";import { UnrealBloomPass } from "three/addons/postprocessing/UnrealBloomPass.js";import { ShaderPass } from "three/addons/postprocessing/ShaderPass.js";import { FXAAShader } from "three/addons/shaders/FXAAShader.js";import { VignetteShader } from "three/addons/shaders/VignetteShader.js";import { GammaCorrectionShader } from "three/addons/shaders/GammaCorrectionShader.js";
const composer = new EffectComposer(renderer);
// 1. Render scenecomposer.addPass(new RenderPass(scene, camera));
// 2. Bloomconst bloomPass = new UnrealBloomPass(  new THREE.Vector2(window.innerWidth, window.innerHeight),  0.5,  0.4,  0.85,);composer.addPass(bloomPass);
// 3. Vignetteconst vignettePass = new ShaderPass(VignetteShader);vignettePass.uniforms["offset"].value = 0.95;vignettePass.uniforms["darkness"].value = 1.0;composer.addPass(vignettePass);
// 4. Gamma correctioncomposer.addPass(new ShaderPass(GammaCorrectionShader));
// 5. Anti-aliasing (always last before output)const fxaaPass = new ShaderPass(FXAAShader);fxaaPass.uniforms["resolution"].value.set(  1 / window.innerWidth,  1 / window.innerHeight,);composer.addPass(fxaaPass);

// Create render targetconst renderTarget = new THREE.WebGLRenderTarget(512, 512);
// Render scene to targetrenderer.setRenderTarget(renderTarget);renderer.render(scene, camera);renderer.setRenderTarget(null);
// Use textureconst texture = renderTarget.texture;otherMaterial.map = texture;

// Multiple composers for different scenes/layersconst bgComposer = new EffectComposer(renderer);bgComposer.addPass(new RenderPass(bgScene, camera));
const fgComposer = new EffectComposer(renderer);fgComposer.addPass(new RenderPass(fgScene, camera));fgComposer.addPass(bloomPass);
// Combine in render loopfunction animate() {  // Render background without clearing  renderer.autoClear = false;  renderer.clear();
  bgComposer.render();
  // Render foreground over it  renderer.clearDepth();  fgComposer.render();}

import { postProcessing } from "three/addons/nodes/Nodes.js";import { pass, bloom, dof } from "three/addons/nodes/Nodes.js";
// Using node-based systemconst scenePass = pass(scene, camera);const bloomNode = bloom(scenePass, 0.5, 0.4, 0.85);
const postProcessing = new THREE.PostProcessing(renderer);postProcessing.outputNode = bloomNode;
// Renderfunction animate() {  postProcessing.render();}

// Disable passbloomPass.enabled = false;
// Reduce bloom resolutionconst bloomPass = new UnrealBloomPass(  new THREE.Vector2(window.innerWidth / 2, window.innerHeight / 2),  strength,  radius,  threshold,);
// Only apply effects in high-performance scenariosconst isMobile = /iPhone|iPad|Android/i.test(navigator.userAgent);if (!isMobile) {  composer.addPass(expensivePass);}

function onWindowResize() {  const width = window.innerWidth;  const height = window.innerHeight;  const pixelRatio = renderer.getPixelRatio();
  camera.aspect = width / height;  camera.updateProjectionMatrix();
  renderer.setSize(width, height);  composer.setSize(width, height);
  // Update pass-specific resolutions  if (fxaaPass) {    fxaaPass.material.uniforms["resolution"].value.set(      1 / (width * pixelRatio),      1 / (height * pixelRatio),    );  }
  if (bloomPass) {    bloomPass.resolution.set(width, height);  }}
window.addEventListener("resize", onWindowResize);