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@@ -1,232 +0,0 @@
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-<!DOCTYPE html>
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-<html lang="en">
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-<head>
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- <title>three.js webgl - instancing test (meshes)</title>
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- <meta charset="utf-8">
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- <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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- <link type="text/css" rel="stylesheet" href="main.css">
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- <style>
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- a {
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- color: #08f;
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- }
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- #notSupported {
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- width: 50%;
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- margin: auto;
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- background-color: #f00;
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- margin-top: 20px;
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- padding: 10px;
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- }
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- </style>
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-</head>
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-<body>
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-
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- <div id="container"></div>
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- <div id="info">
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- <a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - instancing test (meshes)
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- <div id="notSupported" style="display:none">Sorry your graphics card + browser does not support hardware instancing</div>
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- </div>
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-
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- <script id="vertexShader" type="x-shader/x-vertex">
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- precision highp float;
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-
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- attribute vec3 instancePosition;
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- attribute vec4 instanceQuaternion;
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- attribute vec3 instanceScale;
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-
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- varying vec3 vColor;
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-
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- vec3 applyTRS( vec3 position, vec3 translation, vec4 quaternion, vec3 scale ) {
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-
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- position *= scale;
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- position += 2.0 * cross( quaternion.xyz, cross( quaternion.xyz, position ) + quaternion.w * position );
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- return position + translation;
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-
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- }
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-
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- void main(){
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-
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- vColor = color;
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-
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- vec3 transformed = applyTRS( position.xyz, instancePosition, instanceQuaternion, instanceScale );
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-
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- gl_Position = projectionMatrix * modelViewMatrix * vec4( transformed, 1.0 );
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-
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- }
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-
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- </script>
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-
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- <script id="fragmentShader" type="x-shader/x-fragment">
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-
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- precision highp float;
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- varying vec3 vColor;
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-
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- void main() {
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-
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- gl_FragColor = vec4( vColor, 1.0 );
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-
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- }
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-
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- </script>
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-
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- <script type="module">
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- import * as THREE from '../build/three.module.js';
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-
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- import Stats from './jsm/libs/stats.module.js';
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-
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- import { TrackballControls } from './jsm/controls/TrackballControls.js';
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-
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- var container, stats;
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-
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- var camera, scene, renderer;
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-
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- var controls;
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-
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- init();
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- animate();
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-
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- function init() {
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-
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- container = document.getElementById( 'container' );
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-
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- camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.01, 100 );
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- camera.position.z = 4;
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-
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- scene = new THREE.Scene();
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-
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- //
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-
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- var geometry = new THREE.IcosahedronBufferGeometry( 0.1, 1 );
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-
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- var colors = [];
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-
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- for ( var i = 0, l = geometry.attributes.position.count; i < l; i ++ ) {
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-
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- colors.push( Math.random(), Math.random(), Math.random() );
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-
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- }
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-
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- geometry.setAttribute( 'color', new THREE.Float32BufferAttribute( colors, 3 ) );
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-
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- var material = new THREE.MeshBasicMaterial( { color: 0xff0000, vertexColors: THREE.VertexColors } );
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-
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- //
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-
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- var instances = 100;
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-
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- var instancePositions = [];
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- var instanceQuaternions = [];
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- var instanceScales = [];
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-
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- // we create for each mesh a counterpart in our instanced geometry data
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-
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- for ( var i = 0; i < instances; i ++ ) {
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-
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- // the red meshes are drawn with separate draw calls
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-
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- var mesh = new THREE.Mesh( geometry, material );
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- scene.add( mesh );
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-
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- var position = mesh.position;
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- var quaternion = mesh.quaternion;
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- var scale = mesh.scale;
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-
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- position.set( Math.random() * 2 - 1, Math.random() * 2 - 1, Math.random() * 2 - 1 );
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-
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- quaternion.set( Math.random() * 2 - 1, Math.random() * 2 - 1, Math.random() * 2 - 1, Math.random() * 2 - 1 );
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- quaternion.normalize();
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-
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- scale.set( Math.random() * 2, Math.random() * 2, Math.random() * 2 );
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-
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- // instanced attribute data
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-
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- instancePositions.push( position.x, position.y, position.z );
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- instanceQuaternions.push( quaternion.x, quaternion.y, quaternion.z, quaternion.w );
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- instanceScales.push( scale.x, scale.y, scale.z );
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-
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- }
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-
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- var instancedGeometry = new THREE.InstancedBufferGeometry();
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- instancedGeometry.attributes.position = geometry.attributes.position;
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- instancedGeometry.attributes.color = geometry.attributes.color;
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-
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- instancedGeometry.setAttribute( 'instancePosition', new THREE.InstancedBufferAttribute( new Float32Array( instancePositions ), 3 ) );
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- instancedGeometry.setAttribute( 'instanceQuaternion', new THREE.InstancedBufferAttribute( new Float32Array( instanceQuaternions ), 4 ) );
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- instancedGeometry.setAttribute( 'instanceScale', new THREE.InstancedBufferAttribute( new Float32Array( instanceScales ), 3 ) );
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-
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- //
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-
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- var shaderMaterial = new THREE.ShaderMaterial( {
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-
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- uniforms: {},
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- vertexShader: document.getElementById( 'vertexShader' ).textContent,
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- fragmentShader: document.getElementById( 'fragmentShader' ).textContent,
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- vertexColors: true
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-
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- } );
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-
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- // counterparts are drawn all at once with a single draw call (via instanced rendering)
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-
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- var instancedMesh = new THREE.Mesh( instancedGeometry, shaderMaterial );
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- instancedMesh.position.x = 0.1;
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- scene.add( instancedMesh );
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-
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- //
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-
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- renderer = new THREE.WebGLRenderer();
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- renderer.setPixelRatio( window.devicePixelRatio );
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- renderer.setSize( window.innerWidth, window.innerHeight );
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- container.appendChild( renderer.domElement );
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-
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- controls = new TrackballControls( camera, renderer.domElement );
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-
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- if ( renderer.extensions.get( 'ANGLE_instanced_arrays' ) === null ) {
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-
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- document.getElementById( 'notSupported' ).style.display = '';
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- return;
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-
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- }
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-
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- //
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-
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- stats = new Stats();
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- container.appendChild( stats.dom );
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-
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- //
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-
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- window.addEventListener( 'resize', onWindowResize, false );
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-
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- }
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-
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- function onWindowResize() {
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-
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- camera.aspect = window.innerWidth / window.innerHeight;
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- camera.updateProjectionMatrix();
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-
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- renderer.setSize( window.innerWidth, window.innerHeight );
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-
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- }
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-
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- //
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-
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- function animate() {
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-
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- requestAnimationFrame( animate );
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-
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- render();
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- stats.update();
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-
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- }
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-
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- function render() {
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-
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- controls.update();
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-
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- renderer.render( scene, camera );
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-
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- }
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-
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- </script>
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-
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-</body>
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-
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-</html>
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Don McCurdy