threejs-postprocessing

To add bloom and depth of field post-processing to a Three.js scene, set up an EffectComposer and chain a RenderPass with UnrealBloomPass and BokehPass. This applies cinematic visual effects to your render output with proper pass ordering.

The best way to chain custom shader passes in Three.js is using EffectComposer to sequence multiple ShaderPass instances after a RenderPass. This enables multi-pass workflows for screen-space shaders, render-to-texture operations, and layered compositions.

Yes, Three.js post-processing requires manual resize handling for the EffectComposer. You must manage render target sizing and call the composer's setSize method during window resize events to maintain correct render output dimensions.

Yes, you can use FXAA for anti-aliasing in your Three.js render pipeline by adding an FXAAShader as a ShaderPass within your EffectComposer chain. This provides real-time anti-aliasing for interactive web 3D scenes.

Three.js post-processing performance tradeoffs occur because each additional pass in the EffectComposer chain adds render overhead. Multi-pass workflows for visual effects like SSAO, DOF, and bloom require careful management to balance visual polish with real-time performance.