mrdoob · Mugen87 · Aug 12, 2024 · Aug 10, 2024 · Aug 11, 2024 · Aug 11, 2024
diff --git a/examples/files.json b/examples/files.json
@@ -388,6 +388,7 @@
 		"webgpu_postprocessing_masking",
 		"webgpu_postprocessing_motion_blur",
 		"webgpu_postprocessing_sobel",
+		"webgpu_postprocessing_ssaa",
 		"webgpu_postprocessing_transition",
 		"webgpu_postprocessing",
 		"webgpu_procedural_texture",

diff --git a/examples/screenshots/webgpu_postprocessing_ssaa.jpg b/examples/screenshots/webgpu_postprocessing_ssaa.jpg
diff --git a/examples/webgpu_postprocessing_ssaa.html b/examples/webgpu_postprocessing_ssaa.html
@@ -0,0 +1,215 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<title>three.js webpu - postprocessing manual ssaa</title>
+		<meta charset="utf-8">
+		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
+		<link type="text/css" rel="stylesheet" href="main.css">
+	</head>
+	<body>
+		<div id="info">
+			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - Unbiased Manual Supersamling Anti-Aliasing (SSAA) pass by <a href="https://clara.io" target="_blank" rel="noopener">Ben Houston</a>
+		</div>
+
+		<script type="importmap">
+			{
+				"imports": {
+					"three": "../build/three.webgpu.js",
+					"three/tsl": "../build/three.webgpu.js",
+					"three/addons/": "./jsm/"
+				}
+			}
+		</script>
+
+		<script type="module">
+
+			import * as THREE from 'three';
+			import { ssaaPass } from 'three/tsl';
+
+			import { Timer } from 'three/addons/misc/Timer.js';
+			import Stats from 'three/addons/libs/stats.module.js';
+			import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
+
+			let scene, mesh, renderer, postProcessing;
+			let camera, ssaaRenderPass;
+			let gui, stats, timer;
+
+			const params = {
+				sampleLevel: 3,
+				camera: 'perspective',
+				clearColor: 'black',
+				clearAlpha: 1.0,
+				viewOffsetX: 0,
+				autoRotate: true
+
+			};
+
+			init();
+
+			clearGui();
+
+			function clearGui() {
+
+				if ( gui ) gui.destroy();
+
+				gui = new GUI();
+
+				gui.add( params, 'sampleLevel', {
+					'Level 0: 1 Sample': 0,
+					'Level 1: 2 Samples': 1,
+					'Level 2: 4 Samples': 2,
+					'Level 3: 8 Samples': 3,
+					'Level 4: 16 Samples': 4,
+					'Level 5: 32 Samples': 5
+				} );
+				gui.add( params, 'clearColor', [ 'black', 'white', 'blue', 'green', 'red' ] );
+				gui.add( params, 'clearAlpha', 0, 1 );
+				gui.add( params, 'viewOffsetX', - 100, 100 );
+				gui.add( params, 'autoRotate' );
+
+				gui.open();
+
+			}
+
+			function init() {
+
+				const width = window.innerWidth;
+				const height = window.innerHeight;
+
+				renderer = new THREE.WebGPURenderer();
+				renderer.setPixelRatio( window.devicePixelRatio );
+				renderer.setSize( window.innerWidth, window.innerHeight );
+				renderer.setAnimationLoop( animate );
+				document.body.appendChild( renderer.domElement );
+
+				stats = new Stats();
+				document.body.appendChild( stats.dom );
+
+				timer = new Timer();
+
+				camera = new THREE.PerspectiveCamera( 65, width / height, 3, 10 );
+				camera.position.z = 7;
+				camera.setViewOffset( width, height, params.viewOffsetX, 0, width, height );
+
+				scene = new THREE.Scene();
+
+				const group = new THREE.Group();
+				scene.add( group );
+
+				const light = new THREE.PointLight( 0xefffef, 500 );
+				light.position.z = 10;
+				light.position.y = - 10;
+				light.position.x = - 10;
+				scene.add( light );
+
+				const light2 = new THREE.PointLight( 0xffefef, 500 );
+				light2.position.z = 10;
+				light2.position.x = - 10;
+				light2.position.y = 10;
+				scene.add( light2 );
+
+				const light3 = new THREE.PointLight( 0xefefff, 500 );
+				light3.position.z = 10;
+				light3.position.x = 10;
+				light3.position.y = - 10;
+				scene.add( light3 );
+
+				const light4 = new THREE.AmbientLight( 0xffffff, 0.2 );
+				scene.add( light4 );
+
+				const geometry = new THREE.SphereGeometry( 3, 48, 24 );
+				const material = new THREE.MeshStandardMaterial();
+
+				mesh = new THREE.InstancedMesh( geometry, material, 120 );
+
+				const dummy = new THREE.Mesh();
+				const color = new THREE.Color();
+
+				for ( let i = 0; i < mesh.count; i ++ ) {
+
+					dummy.position.x = Math.random() * 4 - 2;
+					dummy.position.y = Math.random() * 4 - 2;
+					dummy.position.z = Math.random() * 4 - 2;
+					dummy.rotation.x = Math.random();
+					dummy.rotation.y = Math.random();
+					dummy.rotation.z = Math.random();
+					dummy.scale.setScalar( Math.random() * 0.2 + 0.05 );
+
+					dummy.updateMatrix();
+
+					color.setHSL( Math.random(), 1.0, 0.3 );
+
+					mesh.setMatrixAt( i, dummy.matrix );
+					mesh.setColorAt( i, color );
+
+				}
+
+				scene.add( mesh );
+
+				// postprocessing
+
+				postProcessing = new THREE.PostProcessing( renderer );
+
+				ssaaRenderPass = ssaaPass( scene, camera );
+				const scenePassColor = ssaaRenderPass.getTextureNode();
+
+				postProcessing.outputNode = scenePassColor;
+
+				window.addEventListener( 'resize', onWindowResize );
+
+			}
+
+			function onWindowResize() {
+
+				const width = window.innerWidth;
+				const height = window.innerHeight;
+
+				camera.aspect = width / height;
+				camera.setViewOffset( width, height, params.viewOffsetX, 0, width, height );
+				camera.updateProjectionMatrix();
+
+				renderer.setSize( width, height );
+
+			}
+
+			function animate() {
+
+				timer.update();
+
+				if ( params.autoRotate ) {
+
+					const delta = timer.getDelta();
+
+					mesh.rotation.x += delta * 0.25;
+					mesh.rotation.y += delta * 0.5;
+
+				}
+
+				let newColor = ssaaRenderPass.clearColor;
+
+				switch ( params.clearColor ) {
+
+					case 'blue': newColor = 0x0000ff; break;
+					case 'red': newColor = 0xff0000; break;
+					case 'green': newColor = 0x00ff00; break;
+					case 'white': newColor = 0xffffff; break;
+					case 'black': newColor = 0x000000; break;
+
+				}
+
+				ssaaRenderPass.clearColor.set( newColor );
+				ssaaRenderPass.clearAlpha = params.clearAlpha;
+
+				ssaaRenderPass.sampleLevel = params.sampleLevel;
+
+				camera.view.offsetX = params.viewOffsetX;
+
+				postProcessing.render();
+
+				stats.update();
+
+			}
+
+		</script>
+	</body>
+</html>
diff --git a/src/nodes/Nodes.js b/src/nodes/Nodes.js
@@ -146,6 +146,7 @@ export { default as BloomNode, bloom } from './display/BloomNode.js';
 export { default as TransitionNode, transition } from './display/TransitionNode.js';
 export { default as RenderOutputNode, renderOutput } from './display/RenderOutputNode.js';
 export { default as PixelationPassNode, pixelationPass } from './display/PixelationPassNode.js';
+export { default as SSAAPassNode, ssaaPass } from './display/SSAAPassNode.js';
 export { bleach } from './display/BleachBypassNode.js';
 export { sepia } from './display/SepiaNode.js';
 

diff --git a/src/nodes/core/MRTNode.js b/src/nodes/core/MRTNode.js
@@ -2,7 +2,7 @@ import { addNodeClass } from './Node.js';
 import OutputStructNode from './OutputStructNode.js';
 import { nodeProxy, vec4 } from '../shadernode/ShaderNode.js';
 
-function getTextureIndex( textures, name ) {
+export function getTextureIndex( textures, name ) {
 
 	for ( let i = 0; i < textures.length; i ++ ) {