threejs-postprocessing

Add bloom and depth of field to a Three.js scene by replacing renderer.render with composer.render in your animation loop, then chaining RenderPass and UnrealBloomPass through EffectComposer. This setup passes render output sequentially through visual effect filters to enhance realism.

Post-processing in Three.js is the technique of applying visual filters like bloom, FXAA, and vignette to a rendered scene using EffectComposer. You need it when real-time 3D web apps or interactive visualizations require cinematic lighting, focus control, or stylized mood.

Handle window resize with Three.js EffectComposer passes by updating the composer size alongside the renderer and camera during resize events. This ensures responsive canvases correctly scale render targets for post-processing effects like film grain and anti-aliasing.

Three.js post-processing works for real-time 3D product viewers by integrating EffectComposer passes into the render loop. It applies cinematic lighting and focus control through bloom, depth of field, and vignette effects directly within interactive web applications.

You can use custom shaders with Three.js post-processing passes by adding them as custom passes within the EffectComposer chain. This allows tailored visual effects alongside built-in passes like UnrealBloomPass and FXAA across responsive canvases.

Three.js post-processing effects may not show up if renderer.render is still called instead of composer.render in the animation loop. Proper operation requires EffectComposer, RenderPass, and related passes to be correctly sequenced and updated on resize.