358 lines
18 KiB
HTML
358 lines
18 KiB
HTML
<!DOCTYPE HTML>
|
|
<html lang="en" class="light sidebar-visible" dir="ltr">
|
|
<head>
|
|
<!-- Book generated using mdBook -->
|
|
<meta charset="UTF-8">
|
|
<title>skinning - Filament</title>
|
|
|
|
|
|
<!-- Custom HTML head -->
|
|
|
|
<meta name="description" content="">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1">
|
|
<meta name="theme-color" content="#ffffff">
|
|
|
|
<link rel="shortcut icon" href="../../favicon.png">
|
|
<link rel="stylesheet" href="../../css/variables.css">
|
|
<link rel="stylesheet" href="../../css/general.css">
|
|
<link rel="stylesheet" href="../../css/chrome.css">
|
|
|
|
<!-- Fonts -->
|
|
<link rel="stylesheet" href="../../FontAwesome/css/font-awesome.css">
|
|
<link rel="stylesheet" href="../../fonts/fonts.css">
|
|
|
|
<!-- Highlight.js Stylesheets -->
|
|
<link rel="stylesheet" href="../../highlight.css">
|
|
<link rel="stylesheet" href="../../tomorrow-night.css">
|
|
<link rel="stylesheet" href="../../ayu-highlight.css">
|
|
|
|
<!-- Custom theme stylesheets -->
|
|
|
|
<!-- MathJax -->
|
|
<script async src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
|
|
|
|
<!-- Provide site root to javascript -->
|
|
<script>
|
|
var path_to_root = "../../";
|
|
var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "light" : "light";
|
|
</script>
|
|
<!-- Start loading toc.js asap -->
|
|
<script src="../../toc.js"></script>
|
|
</head>
|
|
<body>
|
|
<div id="body-container">
|
|
<!-- Work around some values being stored in localStorage wrapped in quotes -->
|
|
<script>
|
|
try {
|
|
var theme = localStorage.getItem('mdbook-theme');
|
|
var sidebar = localStorage.getItem('mdbook-sidebar');
|
|
|
|
if (theme.startsWith('"') && theme.endsWith('"')) {
|
|
localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
|
|
}
|
|
|
|
if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
|
|
localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
|
|
}
|
|
} catch (e) { }
|
|
</script>
|
|
|
|
<!-- Set the theme before any content is loaded, prevents flash -->
|
|
<script>
|
|
var theme;
|
|
try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
|
|
if (theme === null || theme === undefined) { theme = default_theme; }
|
|
const html = document.documentElement;
|
|
html.classList.remove('light')
|
|
html.classList.add(theme);
|
|
html.classList.add("js");
|
|
</script>
|
|
|
|
<input type="checkbox" id="sidebar-toggle-anchor" class="hidden">
|
|
|
|
<!-- Hide / unhide sidebar before it is displayed -->
|
|
<script>
|
|
var sidebar = null;
|
|
var sidebar_toggle = document.getElementById("sidebar-toggle-anchor");
|
|
if (document.body.clientWidth >= 1080) {
|
|
try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
|
|
sidebar = sidebar || 'visible';
|
|
} else {
|
|
sidebar = 'hidden';
|
|
}
|
|
sidebar_toggle.checked = sidebar === 'visible';
|
|
html.classList.remove('sidebar-visible');
|
|
html.classList.add("sidebar-" + sidebar);
|
|
</script>
|
|
|
|
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
|
<div style="display:flex;align-items:center;justify-content:center">
|
|
<img class="flogo" src="../../images/filament_logo_small.png"></img>
|
|
</div>
|
|
<!-- populated by js -->
|
|
<mdbook-sidebar-scrollbox class="sidebar-scrollbox"></mdbook-sidebar-scrollbox>
|
|
<noscript>
|
|
<iframe class="sidebar-iframe-outer" src="../../toc.html"></iframe>
|
|
</noscript>
|
|
<div id="sidebar-resize-handle" class="sidebar-resize-handle">
|
|
<div class="sidebar-resize-indicator"></div>
|
|
</div>
|
|
</nav>
|
|
|
|
<div id="page-wrapper" class="page-wrapper">
|
|
|
|
<div class="page">
|
|
<div id="menu-bar-hover-placeholder"></div>
|
|
<div id="menu-bar" class="menu-bar sticky">
|
|
<div class="left-buttons">
|
|
<label id="sidebar-toggle" class="icon-button" for="sidebar-toggle-anchor" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
|
|
<i class="fa fa-bars"></i>
|
|
</label>
|
|
<!-- Filament: disable themes because the markdeep part does not look good for dark themes -->
|
|
<!--
|
|
<button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
|
|
<i class="fa fa-paint-brush"></i>
|
|
</button>
|
|
<ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
|
|
<li role="none"><button role="menuitem" class="theme" id="light">Light</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
|
|
</ul>
|
|
-->
|
|
<button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
|
|
<i class="fa fa-search"></i>
|
|
</button>
|
|
</div>
|
|
|
|
<h1 class="menu-title">Filament</h1>
|
|
|
|
<div class="right-buttons">
|
|
<a href="https://github.com/google/filament" title="Git repository" aria-label="Git repository">
|
|
<i id="git-repository-button" class="fa fa-github"></i>
|
|
</a>
|
|
|
|
</div>
|
|
</div>
|
|
|
|
<div id="search-wrapper" class="hidden">
|
|
<form id="searchbar-outer" class="searchbar-outer">
|
|
<input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
|
|
</form>
|
|
<div id="searchresults-outer" class="searchresults-outer hidden">
|
|
<div id="searchresults-header" class="searchresults-header"></div>
|
|
<ul id="searchresults">
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
|
|
<!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
|
|
<script>
|
|
document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
|
|
document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
|
|
Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
|
|
link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
|
|
});
|
|
</script>
|
|
|
|
<div id="content" class="content">
|
|
<main>
|
|
<style>
|
|
body { margin: 0; overflow: hidden; }
|
|
canvas { touch-action: none; width: 100%; height: 400px; border: 1px solid black; }
|
|
</style>
|
|
<p><canvas></canvas></p>
|
|
<script src="../../web/lib/filament.js"></script>
|
|
<script src="../../web/lib/gl-matrix-min.js"></script>
|
|
<script>
|
|
let buffer0 = "AAABAAMAAAADAAIAAgADAAUAAgAFAAQABAAFAAcABAAHAAYABgAHAAkABgAJAAgAAAAAAAAAAAAAAAAAAACAPwAAAAAAAAAAAAAAAAAAAD8AAAAAAACAPwAAAD8AAAAAAAAAAAAAgD8AAAAAAACAPwAAgD8AAAAAAAAAAAAAwD8AAAAAAACAPwAAwD8AAAAAAAAAAAAAAEAAAAAAAACAPwAAAEAAAAAA";
|
|
let buffer1 = "AAABAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAgD8AAAAAAAAAAAAAAAAAAIA/AAAAAAAAAAAAAAAAAABAPwAAgD4AAAAAAAAAAAAAQD8AAIA+AAAAAAAAAAAAAAA/AAAAPwAAAAAAAAAAAAAAPwAAAD8AAAAAAAAAAAAAgD4AAEA/AAAAAAAAAAAAAIA+AABAPwAAAAAAAAAAAAAAAAAAgD8AAAAAAAAAAAAAAAAAAIA/AAAAAAAAAAA=";
|
|
let buffer2 = "AACAPwAAAAAAAAAAAAAAAAAAAAAAAIA/AAAAAAAAAAAAAAAAAAAAAAAAgD8AAAAAAAAAvwAAgL8AAAAAAACAPwAAgD8AAAAAAAAAAAAAAAAAAAAAAACAPwAAAAAAAAAAAAAAAAAAAAAAAIA/AAAAAAAAAL8AAIC/AAAAAAAAgD8=";
|
|
let buffer3 = "AAAAAAAAAD8AAIA/AADAPwAAAEAAACBAAABAQAAAYEAAAIBAAACQQAAAoEAAALBAAAAAAAAAAAAAAAAAAACAPwAAAAAAAAAAkxjEPkSLbD8AAAAAAAAAAPT9ND/0/TQ/AAAAAAAAAAD0/TQ/9P00PwAAAAAAAAAAkxjEPkSLbD8AAAAAAAAAAAAAAAAAAIA/AAAAAAAAAAAAAAAAAACAPwAAAAAAAAAAkxjEvkSLbD8AAAAAAAAAAPT9NL/0/TQ/AAAAAAAAAAD0/TS/9P00PwAAAAAAAAAAkxjEvkSLbD8AAAAAAAAAAAAAAAAAAIA/";
|
|
buffer0 = Uint8Array.from(atob(buffer0), c => c.charCodeAt(0)).buffer;
|
|
buffer1 = Uint8Array.from(atob(buffer1), c => c.charCodeAt(0)).buffer;
|
|
buffer2 = Uint8Array.from(atob(buffer2), c => c.charCodeAt(0)).buffer;
|
|
buffer3 = Uint8Array.from(atob(buffer3), c => c.charCodeAt(0)).buffer;
|
|
const bufview0 = new Uint16Array(buffer0, 0, 24); // ushort indices
|
|
const bufview1 = new Float32Array(buffer0, 48); // vec3 positions
|
|
const bufview2 = new Uint8Array(buffer1, 0); // bone indices and weights
|
|
const bufview3 = new Float32Array(buffer2); // two bone matrices (inverseBindMatrices)
|
|
const bufview4 = new Float32Array(buffer3, 0, 12); // 12 floats (time in seconds)
|
|
const bufview5 = new Float32Array(buffer3, 48); // 12 rotation quaternions
|
|
/*
|
|
This demo is heavily inspired by gltfTutorial_019_SimpleSkin:
|
|
"nodes" : [
|
|
{ "skin" : 0, "mesh" : 0, "children" : [ 1 ] },
|
|
{ "children" : [ 2 ], "translation" : [ 0.0, 1.0, 0.0 ] },
|
|
{ "rotation" : [ 0.0, 0.0, 0.0, 1.0 ] }
|
|
],
|
|
"skins" : [ {
|
|
"inverseBindMatrices" : 4, // points to an accessor with two matrices
|
|
"joints" : [ 1, 2 ] // the 2nd and 3rd nodes (which have no geometry) are the joints
|
|
} ],
|
|
"animations" : [ {
|
|
"channels" : [ {
|
|
"sampler" : 0,
|
|
"target" : { "node" : 2, "path" : "rotation" } // the animation only applies to the 3rd node
|
|
} ],
|
|
"samplers" : [ { "input" : 5, "interpolation" : "LINEAR", "output" : 6 } ]
|
|
} ],
|
|
...
|
|
*/
|
|
const ibl_url = '../../web/assets/skinning/default_env/default_env_ibl.ktx';
|
|
const sky_url = '../../web/assets/skinning/default_env/default_env_skybox.ktx';
|
|
Filament.init([ '../../web/assets/skinning/skinning.filamat', ibl_url, sky_url ], () => {
|
|
window.AttributeType = Filament.VertexBuffer$AttributeType;
|
|
window.Fov = Filament.Camera$Fov;
|
|
window.Projection = Filament.Camera$Projection;
|
|
window.VertexAttribute = Filament.VertexAttribute;
|
|
window.app = new App(document.getElementsByTagName('canvas')[0]);
|
|
});
|
|
class App {
|
|
constructor(canvas) {
|
|
this.canvas = canvas;
|
|
const engine = this.engine = Filament.Engine.create(this.canvas);
|
|
this.scene = engine.createScene();
|
|
const indirectLight = engine.createIblFromKtx1(ibl_url);
|
|
indirectLight.setIntensity(50000);
|
|
this.scene.setIndirectLight(indirectLight);
|
|
const skybox = engine.createSkyFromKtx1(sky_url);
|
|
this.scene.setSkybox(skybox);
|
|
this.mesh = Filament.EntityManager.get().create();
|
|
this.scene.addEntity(this.mesh);
|
|
this.ib = Filament.IndexBuffer.Builder()
|
|
.indexCount(24)
|
|
.bufferType(Filament.IndexBuffer$IndexType.USHORT)
|
|
.build(engine);
|
|
this.ib.setBuffer(engine, bufview0);
|
|
this.vb = Filament.VertexBuffer.Builder()
|
|
.vertexCount(10)
|
|
.bufferCount(3)
|
|
.attribute(VertexAttribute.POSITION, 0, AttributeType.FLOAT3, 0, 12)
|
|
.attribute(VertexAttribute.BONE_INDICES, 1, AttributeType.USHORT4, 0, 16)
|
|
.attribute(VertexAttribute.BONE_WEIGHTS, 2, AttributeType.FLOAT4, 0, 16)
|
|
.build(engine);
|
|
this.vb.setBufferAt(engine, 0, bufview1);
|
|
this.vb.setBufferAt(engine, 1, bufview2.subarray(0, 160));
|
|
this.vb.setBufferAt(engine, 2, bufview2.subarray(160, 320));
|
|
const mat = engine.createMaterial('../../web/assets/skinning/skinning.filamat');
|
|
const matinst = mat.getDefaultInstance();
|
|
Filament.RenderableManager.Builder(1)
|
|
.boundingBox({ center: [-1, -1, -1], halfExtent: [1, 1, 1] })
|
|
.material(0, matinst)
|
|
.geometry(0, Filament.RenderableManager$PrimitiveType.TRIANGLES, this.vb, this.ib)
|
|
.skinning(2)
|
|
.build(engine, this.mesh);
|
|
this.swapChain = engine.createSwapChain();
|
|
this.renderer = engine.createRenderer();
|
|
this.camera = engine.createCamera(Filament.EntityManager.get().create());
|
|
const eye = [0, 0, 4], center = [0, 0, 0], up = [0, 1, 0];
|
|
this.camera.lookAt(eye, center, up);
|
|
this.view = engine.createView();
|
|
this.view.setCamera(this.camera);
|
|
this.view.setScene(this.scene);
|
|
this.renderer.setClearOptions({clearColor: [1.0, 1.0, 1.0, 1.0], clear: true});
|
|
this.resize();
|
|
this.render = this.render.bind(this);
|
|
this.resize = this.resize.bind(this);
|
|
window.addEventListener('resize', this.resize);
|
|
window.requestAnimationFrame(this.render);
|
|
}
|
|
render() {
|
|
const endTime = 5.5;
|
|
const timepoints = bufview4;
|
|
const quats = bufview5;
|
|
const inverseBindMatrices = bufview3;
|
|
const nframes = timepoints.length;
|
|
const seconds = (Date.now() / 1000) % endTime;
|
|
let t = -1;
|
|
let q = [0, 0, 0, 1];
|
|
for (let i = 0; i < nframes; i++) {
|
|
const j = (i + 1) % nframes;
|
|
const next = (i == nframes - 1) ? (endTime + timepoints[0]) : timepoints[i + 1];
|
|
const curr = timepoints[i];
|
|
if (seconds >= curr && seconds < next) {
|
|
t = (seconds - curr) / (next - curr);
|
|
const q0 = quats.subarray(4 * i, 4 * (i + 1));
|
|
const q1 = quats.subarray(4 * j, 4 * (j + 1));
|
|
quat.slerp(q, q0, q1, t);
|
|
break;
|
|
}
|
|
}
|
|
const transforms = [mat4.create(), mat4.create()];
|
|
mat4.multiply(transforms[0], transforms[0], inverseBindMatrices.subarray(0, 16));
|
|
mat4.multiply(transforms[1], transforms[1], inverseBindMatrices.subarray(16, 32));
|
|
const m = mat4.fromQuat(mat4.create(), q);
|
|
mat4.multiply(transforms[1], m, transforms[1]);
|
|
const rm = this.engine.getRenderableManager();
|
|
const renderable = rm.getInstance(this.mesh);
|
|
rm.setBonesFromMatrices(renderable, transforms, 0);
|
|
renderable.delete();
|
|
this.renderer.render(this.swapChain, this.view);
|
|
window.requestAnimationFrame(this.render);
|
|
}
|
|
resize() {
|
|
const dpr = window.devicePixelRatio;
|
|
const width = this.canvas.width = this.canvas.clientWidth * dpr;
|
|
const height = this.canvas.height = this.canvas.clientHeight * dpr;
|
|
this.view.setViewport([0, 0, width, height]);
|
|
const aspect = width / height;
|
|
const fov = aspect < 1 ? Fov.HORIZONTAL : Fov.VERTICAL;
|
|
this.camera.setProjectionFov(45, aspect, 1.0, 10.0, fov);
|
|
}
|
|
}
|
|
</script>
|
|
|
|
</main>
|
|
|
|
<nav class="nav-wrapper" aria-label="Page navigation">
|
|
<!-- Mobile navigation buttons -->
|
|
<a rel="prev" href="../../samples/web/parquet.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
|
<i class="fa fa-angle-left"></i>
|
|
</a>
|
|
|
|
<a rel="next prefetch" href="../../samples/web/sky.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
|
<i class="fa fa-angle-right"></i>
|
|
</a>
|
|
|
|
<div style="clear: both"></div>
|
|
</nav>
|
|
</div>
|
|
</div>
|
|
|
|
<nav class="nav-wide-wrapper" aria-label="Page navigation">
|
|
<a rel="prev" href="../../samples/web/parquet.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
|
<i class="fa fa-angle-left"></i>
|
|
</a>
|
|
|
|
<a rel="next prefetch" href="../../samples/web/sky.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
|
<i class="fa fa-angle-right"></i>
|
|
</a>
|
|
</nav>
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<script>
|
|
window.playground_copyable = true;
|
|
</script>
|
|
|
|
|
|
<script src="../../elasticlunr.min.js"></script>
|
|
<script src="../../mark.min.js"></script>
|
|
<script src="../../searcher.js"></script>
|
|
|
|
<script src="../../clipboard.min.js"></script>
|
|
<script src="../../highlight.js"></script>
|
|
<script src="../../book.js"></script>
|
|
|
|
<!-- Custom JS scripts -->
|
|
|
|
|
|
</div>
|
|
</body>
|
|
</html>
|