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webgl_materials_texture_anisotropy.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - materials - anisotropic texture filtering</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
color: #000;
font-family:Monospace;
font-size:13px;
text-align:center;
background-color: #fff;
margin: 0px;
padding: 0px;
overflow: hidden;
}
#info {
position: absolute;
top: 0px; width: 100%;
padding: 5px;
z-index:100;
}
.lbl { color:#fff; font-size:16px; font-weight:bold; position: absolute; bottom:0px; z-index:100; text-shadow:#000 1px 1px 1px; background-color:rgba(0,0,0,0.85); padding:1em }
#lbl_left { text-align:left; left:0px }
#lbl_right { text-align:left; right:0px }
.g { color:#aaa }
.c { color:#fa0 }
a { color:red }
</style>
</head>
<body>
<div id="info">
<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - anisotropic texture filtering example
</div>
<div id="lbl_left" class="lbl">
anisotropy: <span class="c" id="val_left"></span><br/>
</div>
<div id="lbl_right" class="lbl">
anisotropy: <span class="c" id="val_right"></span><br/>
</div>
<script src="../build/three.js"></script>
<script src="js/WebGL.js"></script>
<script src="js/libs/stats.min.js"></script>
<script>
if ( WEBGL.isWebGLAvailable() === false ) {
document.body.appendChild( WEBGL.getWebGLErrorMessage() );
}
var SCREEN_WIDTH = window.innerWidth;
var SCREEN_HEIGHT = window.innerHeight;
var container, stats;
var camera, scene1, scene2, renderer;
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
renderer = new THREE.WebGLRenderer( { antialias: true } );
//
camera = new THREE.PerspectiveCamera( 35, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 25000 );
camera.position.z = 1500;
scene1 = new THREE.Scene();
scene1.background = new THREE.Color( 0xf2f7ff );
scene1.fog = new THREE.Fog( 0xf2f7ff, 1, 25000 );
scene2 = new THREE.Scene();
scene2.background = new THREE.Color( 0xf2f7ff );
scene2.fog = new THREE.Fog( 0xf2f7ff, 1, 25000 );
scene1.add( new THREE.AmbientLight( 0xeef0ff ) );
scene2.add( new THREE.AmbientLight( 0xeef0ff ) );
var light1 = new THREE.DirectionalLight( 0xffffff, 2 );
light1.position.set( 1, 1, 1 );
scene1.add( light1 );
var light2 = new THREE.DirectionalLight( 0xffffff, 2 );
light2.position.set( 1, 1, 1 );
scene2.add( light2 );
// GROUND
var textureLoader = new THREE.TextureLoader();
var maxAnisotropy = renderer.capabilities.getMaxAnisotropy();
var texture1 = textureLoader.load( "textures/crate.gif" );
var material1 = new THREE.MeshPhongMaterial( { color: 0xffffff, map: texture1 } );
texture1.anisotropy = maxAnisotropy;
texture1.wrapS = texture1.wrapT = THREE.RepeatWrapping;
texture1.repeat.set( 512, 512 );
var texture2 = textureLoader.load( "textures/crate.gif" );
var material2 = new THREE.MeshPhongMaterial( { color: 0xffffff, map: texture2 } );
texture2.anisotropy = 1;
texture2.wrapS = texture2.wrapT = THREE.RepeatWrapping;
texture2.repeat.set( 512, 512 );
if ( maxAnisotropy > 0 ) {
document.getElementById( "val_left" ).innerHTML = texture1.anisotropy;
document.getElementById( "val_right" ).innerHTML = texture2.anisotropy;
} else {
document.getElementById( "val_left" ).innerHTML = "not supported";
document.getElementById( "val_right" ).innerHTML = "not supported";
}
//
var geometry = new THREE.PlaneBufferGeometry( 100, 100 );
var mesh1 = new THREE.Mesh( geometry, material1 );
mesh1.rotation.x = - Math.PI / 2;
mesh1.scale.set( 1000, 1000, 1000 );
var mesh2 = new THREE.Mesh( geometry, material2 );
mesh2.rotation.x = - Math.PI / 2;
mesh2.scale.set( 1000, 1000, 1000 );
scene1.add( mesh1 );
scene2.add( mesh2 );
// RENDERER
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
renderer.autoClear = false;
renderer.domElement.style.position = "relative";
container.appendChild( renderer.domElement );
// STATS1
stats = new Stats();
container.appendChild( stats.dom );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
}
function onDocumentMouseMove( event ) {
mouseX = ( event.clientX - windowHalfX );
mouseY = ( event.clientY - windowHalfY );
}
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
camera.position.x += ( mouseX - camera.position.x ) * .05;
camera.position.y = THREE.Math.clamp( camera.position.y + ( - ( mouseY - 200 ) - camera.position.y ) * .05, 50, 1000 );
camera.lookAt( scene1.position );
renderer.clear();
renderer.setScissorTest( true );
renderer.setScissor( 0, 0, SCREEN_WIDTH / 2 - 2, SCREEN_HEIGHT );
renderer.render( scene1, camera );
renderer.setScissor( SCREEN_WIDTH / 2, 0, SCREEN_WIDTH / 2 - 2, SCREEN_HEIGHT );
renderer.render( scene2, camera );
renderer.setScissorTest( false );
}
</script>
</body>
</html>