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SSGIExample: Add Cornell Box-Inspired Scene #31897

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Merged
merged 3 commits into from
Sep 13, 2025
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SSGIExample: Add Cornell Box-Inspired Scene #31897

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SSGIExample: Add Cornell Box Inspired Scene
zalo Sep 12, 2025
15ad533
Improve the naming of everything
zalo Sep 12, 2025
13b2a5f
Fix some minor shadow biasing artifacts
zalo Sep 12, 2025
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118 changes: 93 additions & 25 deletions examples/webgpu_postprocessing_ssgi.html
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Original file line number Diff line number Diff line change
Expand Up @@ -10,8 +10,6 @@

<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> WebGPU - Post-Processing - SSGI<br />
<a href="https://skfb.ly/YZoC" target="_blank" rel="noopener">Mirror's Edge Apartment</a> by
<a href="https://sketchfab.com/aurelien_martel" target="_blank" rel="noopener">Aurélien Martel</a> is licensed under <a href="https://creativecommons.org/licenses/by-nc/4.0/" target="_blank" rel="noopener">Creative Commons Attribution-NonCommercial</a>.<br />
</div>

<script type="importmap">
Expand All @@ -33,8 +31,6 @@
import { traa } from 'three/addons/tsl/display/TRAANode.js';

import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
import { DRACOLoader } from 'three/addons/loaders/DRACOLoader.js';
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';

import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
import Stats from 'three/addons/libs/stats.module.js';
Expand All @@ -45,18 +41,17 @@

async function init() {

camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 0.1, 50 );
camera.position.set( 2.8, 1.8, 5 );
camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 0.1, 100 );
camera.position.set( 0, 10, 30 );

scene = new THREE.Scene();
scene.background = new THREE.Color( 0xffffff );
scene.background = new THREE.Color( 0xaaaaaa );

renderer = new THREE.WebGPURenderer();
//renderer.setPixelRatio( window.devicePixelRatio ); // probably too costly for most hardware
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.setAnimationLoop( animate );
renderer.toneMapping = THREE.NeutralToneMapping;
renderer.toneMappingExposure = 1.5;
renderer.shadowMap.enabled = true;
document.body.appendChild( renderer.domElement );

stats = new Stats();
Expand All @@ -65,10 +60,10 @@
//

controls = new OrbitControls( camera, renderer.domElement );
controls.target.set( 0, 1, 0 );
controls.target.set( 0, 7, 0 );
controls.enablePan = true;
controls.minDistance = 1;
controls.maxDistance = 6;
controls.maxDistance = 100;
controls.update();

//
Expand Down Expand Up @@ -121,19 +116,92 @@
const traaPass = traa( compositePass, scenePassDepth, scenePassVelocity, camera );
postProcessing.outputNode = traaPass;

//

const dracoLoader = new DRACOLoader();
dracoLoader.setDecoderPath( 'jsm/libs/draco/' );
dracoLoader.setDecoderConfig( { type: 'js' } );
const loader = new GLTFLoader();
loader.setDRACOLoader( dracoLoader );
loader.setPath( 'models/gltf/' );

const gltf = await loader.loadAsync( 'mirrors_edge.glb' );

const model = gltf.scene;
scene.add( model );
// Cornell Box inspired scene

// Walls
const wallGeometry = new THREE.PlaneGeometry(1, 1);

// Left wall - red
const redWallMaterial = new THREE.MeshPhysicalMaterial({ color: "#ff0000" });
const leftWall = new THREE.Mesh(wallGeometry, redWallMaterial);
leftWall.scale.set( 20, 15, 1 );
leftWall.rotation.y = Math.PI * 0.5;
leftWall.position.set(-10, 7.5, 0);
leftWall.receiveShadow = true;
scene.add(leftWall);

// Right wall - green
const greenWallMaterial = new THREE.MeshPhysicalMaterial({ color: "#00ff00" });
const rightWall = new THREE.Mesh(wallGeometry, greenWallMaterial);
rightWall.scale.set( 20, 15, 1 );
rightWall.rotation.y = Math.PI * -0.5;
rightWall.position.set(10, 7.5, 0);
rightWall.receiveShadow = true;
scene.add(rightWall);

// White walls and boxes
const whiteMaterial = new THREE.MeshPhysicalMaterial({ color: "#fff" });

// Floor
const floor = new THREE.Mesh(wallGeometry, whiteMaterial);
floor.scale.set( 20, 20, 1 );
floor.rotation.x = Math.PI * -.5;
floor.receiveShadow = true;
scene.add(floor);

// Back wall
const backWall = new THREE.Mesh(wallGeometry, whiteMaterial);
backWall.scale.set( 15, 20, 1 );
backWall.rotation.z = Math.PI * -0.5;
backWall.position.set(0, 7.5, -10);
backWall.receiveShadow = true;
scene.add(backWall);

// Ceiling
const ceiling = new THREE.Mesh(wallGeometry, whiteMaterial);
ceiling.scale.set( 20, 20, 1 );
ceiling.rotation.x = Math.PI * 0.5;
ceiling.position.set(0, 15, 0);
ceiling.receiveShadow = true;
scene.add(ceiling);

// Boxes
const tallBoxGeometry = new THREE.BoxGeometry(5, 7, 5);
const tallBox = new THREE.Mesh(tallBoxGeometry, whiteMaterial);
tallBox.rotation.y = Math.PI * 0.25;
tallBox.position.set(-3, 3.5, -2);
tallBox.castShadow = true;
tallBox.receiveShadow = true;
scene.add(tallBox);

const shortBoxGeometry = new THREE.BoxGeometry(4, 4, 4);
const shortBox = new THREE.Mesh(shortBoxGeometry, whiteMaterial);
shortBox.rotation.y = Math.PI * -0.1;
shortBox.position.set(4, 2, 4);
shortBox.castShadow = true;
shortBox.receiveShadow = true;
scene.add(shortBox);

// Light source geometry
const lightSourceGeometry = new THREE.CylinderGeometry(2.5, 2.5, 1, 64);
const lightSourceMaterial = new THREE.MeshBasicMaterial();
const lightSource = new THREE.Mesh(lightSourceGeometry, lightSourceMaterial);
lightSource.position.y = 15;
scene.add(lightSource);

// Point light
const pointLight = new THREE.PointLight("#ffffff", 100);
pointLight.position.set(0, 13, 0);
pointLight.distance = 100;
pointLight.castShadow = true;
pointLight.shadow.mapSize.width = 1024;
pointLight.shadow.mapSize.height = 1024;
pointLight.shadow.bias = -0.0025;
scene.add(pointLight);

// Ambient light
const ambientLight = new THREE.AmbientLight("#0c0c0c");
scene.add(ambientLight);

window.addEventListener( 'resize', onWindowResize );

Expand All @@ -143,7 +211,7 @@
output: 0
};

const types = { Default: 0, AO: 1, GI: 2, Beauty: 3 };
const types = { Combined: 0, Direct: 3, AO: 1, GI: 2 };

const gui = new GUI();
gui.title( 'SSGI settings' );
Expand Down
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