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Examples: Simpler atmosphere approach in webgpu_compute_birds #29366

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merged 4 commits into from
Sep 10, 2024
Merged

Examples: Simpler atmosphere approach in webgpu_compute_birds #29366

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e0cb74c
Examples: Simpler atmosphere approach in webgpu_compute_birds.
mrdoob Sep 9, 2024
83646b9
no message
mrdoob Sep 9, 2024
9681929
Improved bird shape.
mrdoob Sep 9, 2024
58ae66c
Update webgpu_compute_birds.jpg
sunag Sep 9, 2024
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40 changes: 25 additions & 15 deletions examples/webgpu_compute_birds.html
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Original file line number Diff line number Diff line change
Expand Up @@ -35,7 +35,7 @@
<script type="module">

import * as THREE from 'three';
import { uniform, varyingProperty, vec4, max, sin, mat3, uint, negate, cameraProjectionMatrix, cameraViewMatrix, positionLocal, modelWorldMatrix, sqrt, attribute, property, float, storage, storageObject, Fn, If, cos, Loop, Continue, normalize, instanceIndex, length } from 'three/tsl';
import { uniform, varying, vec4, add, sub, max, sin, mat3, uint, negate, cameraProjectionMatrix, cameraViewMatrix, positionLocal, modelWorldMatrix, sqrt, attribute, property, float, storage, storageObject, Fn, If, cos, Loop, Continue, normalize, instanceIndex, length } from 'three/tsl';

import Stats from 'three/addons/libs/stats.module.js';
import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
Expand Down Expand Up @@ -92,21 +92,21 @@

// Body
verts_push(
0, - 0, - 20,
0, 4, - 20,
0, 0, - 20,
0, - 8, 10,
0, 0, 30
);

// Wings
verts_push(
0, 0, - 15,
- wingsSpan, 0, 0,
- wingsSpan, 0, 5,
0, 0, 15
);

verts_push(
0, 0, 15,
wingsSpan, 0, 0,
wingsSpan, 0, 5,
0, 0, - 15
);

Expand Down Expand Up @@ -134,22 +134,32 @@
container = document.createElement( 'div' );
document.body.appendChild( container );

camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 3000 );
camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 5000 );
camera.position.z = 1000;

scene = new THREE.Scene();
scene.fog = new THREE.Fog( 0xffffff, 500, 3000 );
scene.fog = new THREE.Fog( 0xffffff, 700, 3000 );

// Sky

const light = new THREE.HemisphereLight( 0x0000ff, 0xffbb00, 3 );
light.position.x = - 1;
light.position.z = - 1;
scene.add( light );
const geometry = new THREE.IcosahedronGeometry( 1, 6 );
const material = new THREE.MeshBasicNodeMaterial( {
// Use vertex positions to create atmosphere colors
colorNode: varying(
vec4(
sub( 0.25, positionLocal.y ),
sub( - 0.25, positionLocal.y ),
add( 1.5, positionLocal.y ),
1.0
)
),
side: THREE.BackSide
} );

const geometry = new THREE.IcosahedronGeometry( 1000, 6 );
const material = new THREE.MeshStandardMaterial( { side: THREE.BackSide } );
scene.add( new THREE.Mesh( geometry, material ) );
const mesh = new THREE.Mesh( geometry, material );
mesh.rotation.z = 0.75;
mesh.scale.setScalar( 1000 );
scene.add( mesh );

renderer = new THREE.WebGPURenderer( { antialiasing: true } );
renderer.setPixelRatio( window.devicePixelRatio );
Expand Down Expand Up @@ -223,7 +233,7 @@

const birdGeometry = new BirdGeometry();
const birdMaterial = new THREE.NodeMaterial();

// Animate bird mesh within vertex shader, then apply position offset to vertices.

const birdVertexTSL = Fn( () => {
Expand Down