📄 threejs/Addons/Postprocessing/SMAAPass

File: SMAAPass.md | Updated: 11/15/2025


title: SMAAPass category: Addons layout: docs

SMAAPass

A pass for applying SMAA. Unlike FXAAPass, SMAAPass operates in linear-srgb so this pass must be executed before OutputPass.

Code Example

const smaaPass = new SMAAPass();
composer.addPass( smaaPass );

Import

SMAAPass is an addon, and must be imported explicitly, see Installation#Addons.

import { SMAAPass } from 'three/addons/postprocessing/SMAAPass.js';

Constructor

new SMAAPass()

Constructs a new SMAA pass.

Methods

.dispose()

Frees the GPU-related resources allocated by this instance. Call this method whenever the pass is no longer used in your app.

Overrides: Pass#dispose

.render( renderer : WebGLRenderer, writeBuffer : WebGLRenderTarget, readBuffer : WebGLRenderTarget, deltaTime : number, maskActive : boolean )

Performs the SMAA pass.

renderer | The renderer.
---|---
writeBuffer | The write buffer. This buffer is intended as the rendering destination for the pass.
readBuffer | The read buffer. The pass can access the result from the previous pass from this buffer.
deltaTime | The delta time in seconds.
maskActive | Whether masking is active or not.

Overrides: Pass#render

.setSize( width : number, height : number )

Sets the size of the pass.

width | The width to set.
---|---
height | The height to set.

Overrides: Pass#setSize

Source

examples/jsm/postprocessing/SMAAPass.js