Three.js Post-Processing
EffectComposer plus a passes library — RenderPass, ShaderPass, UnrealBloomPass, BloomPass, SSAOPass, SSRPass, SAOPass, OutlinePass, SMAAPass, FXAAPass, TAARenderPass, BokehPass, GlitchPass — for chaining screen-space effects, with WebGPU equivalents under `three/addons/postprocessing` for the new renderer.