mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-26 15:34:57 +01:00
222 lines
4.7 KiB
HTML
222 lines
4.7 KiB
HTML
|
<!DOCTYPE html>
|
||
|
|
<html lang="en">
|
||
|
|
<head>
|
||
|
|
<title>three.js webgl - materials - HDR texture</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: #fff;
|
||
|
|
font-family:Monospace;
|
||
|
|
font-size:13px;
|
||
|
|
text-align:center;
|
||
|
|
font-weight: bold;
|
||
|
|
|
||
|
|
background-color: #000;
|
||
|
|
margin: 0px;
|
||
|
|
overflow: hidden;
|
||
|
|
}
|
||
|
|
|
||
|
|
#info {
|
||
|
|
color:#fff;
|
||
|
|
position: absolute;
|
||
|
|
top: 0px; width: 100%;
|
||
|
|
padding: 5px;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
a { color: red; }
|
||
|
|
|
||
|
|
</style>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
|
||
|
|
<div id="container"></div>
|
||
|
|
<div id="info">
|
||
|
|
<a href="http://threejs.org" target="_blank">three.js</a> - webgl HDR texture example -
|
||
|
|
based on <a href="http://spidergl.org/example.php?id=13" target="_blank">SpiderGL</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<script src="../build/three.min.js"></script>
|
||
|
|
|
||
|
|
<script src="js/Detector.js"></script>
|
||
|
|
<script src="js/libs/stats.min.js"></script>
|
||
|
|
|
||
|
|
<!-- HDR fragment shader -->
|
||
|
|
|
||
|
|
<script id="fs-hdr" type="x-shader/x-fragment">
|
||
|
|
|
||
|
|
uniform sampler2D tDiffuse;
|
||
|
|
uniform float exposure;
|
||
|
|
uniform float brightMax;
|
||
|
|
|
||
|
|
varying vec2 vUv;
|
||
|
|
|
||
|
|
vec3 decode_pnghdr( const in vec4 color ) {
|
||
|
|
|
||
|
|
// remove gamma correction
|
||
|
|
vec4 res = color * color;
|
||
|
|
|
||
|
|
// decoded RI
|
||
|
|
float ri = pow( 2.0, res.w * 32.0 - 16.0 );
|
||
|
|
|
||
|
|
// decoded HDR pixel
|
||
|
|
res.xyz = res.xyz * ri;
|
||
|
|
return res.xyz;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
|
||
|
|
vec4 color = texture2D( tDiffuse, vUv );
|
||
|
|
color.xyz = decode_pnghdr( color );
|
||
|
|
|
||
|
|
// apply gamma correction and exposure
|
||
|
|
//gl_FragColor = vec4( pow( exposure * color.xyz, vec3( 0.474 ) ), 1.0 );
|
||
|
|
|
||
|
|
// Perform tone-mapping
|
||
|
|
float Y = dot(vec4(0.30, 0.59, 0.11, 0.0), color);
|
||
|
|
float YD = exposure * (exposure/brightMax + 1.0) / (exposure + 1.0);
|
||
|
|
color *= YD;
|
||
|
|
|
||
|
|
gl_FragColor = vec4( color.xyz, 1.0 );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<!-- HDR vertex shader -->
|
||
|
|
|
||
|
|
<script id="vs-hdr" type="x-shader/x-vertex">
|
||
|
|
|
||
|
|
varying vec2 vUv;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
|
||
|
|
vUv = uv;
|
||
|
|
gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
|
||
|
|
<script>
|
||
|
|
|
||
|
|
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
|
||
|
|
|
||
|
|
var container, stats;
|
||
|
|
|
||
|
|
var camera, scene, renderer;
|
||
|
|
var materialHDR, quad;
|
||
|
|
|
||
|
|
var sign = 1, rate = 1;
|
||
|
|
|
||
|
|
var clock = new THREE.Clock();
|
||
|
|
|
||
|
|
init();
|
||
|
|
animate();
|
||
|
|
|
||
|
|
function init() {
|
||
|
|
|
||
|
|
container = document.getElementById( 'container' );
|
||
|
|
|
||
|
|
camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 10000 );
|
||
|
|
camera.position.z = 900;
|
||
|
|
|
||
|
|
scene = new THREE.Scene();
|
||
|
|
|
||
|
|
var texture = THREE.ImageUtils.loadTexture( "textures/memorial.png" );
|
||
|
|
texture.minFilter = THREE.LinearFilter;
|
||
|
|
texture.magFilter = THREE.NearestFilter;
|
||
|
|
|
||
|
|
materialHDR = new THREE.ShaderMaterial( {
|
||
|
|
|
||
|
|
uniforms: {
|
||
|
|
tDiffuse: { type: "t", value: texture },
|
||
|
|
exposure: { type: "f", value: 0.125 },
|
||
|
|
brightMax: { type: "f", value: 0.5 }
|
||
|
|
},
|
||
|
|
vertexShader: getText( 'vs-hdr' ),
|
||
|
|
fragmentShader: getText( 'fs-hdr' )
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
var plane = new THREE.PlaneBufferGeometry( 512, 768 );
|
||
|
|
|
||
|
|
quad = new THREE.Mesh( plane, materialHDR );
|
||
|
|
quad.position.z = -100;
|
||
|
|
scene.add( quad );
|
||
|
|
|
||
|
|
renderer = new THREE.WebGLRenderer();
|
||
|
|
renderer.setPixelRatio( window.devicePixelRatio );
|
||
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
||
|
|
container.appendChild( renderer.domElement );
|
||
|
|
|
||
|
|
stats = new Stats();
|
||
|
|
stats.domElement.style.position = 'absolute';
|
||
|
|
stats.domElement.style.top = '0px';
|
||
|
|
container.appendChild( stats.domElement );
|
||
|
|
|
||
|
|
//
|
||
|
|
|
||
|
|
window.addEventListener( 'resize', onWindowResize, false );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function onWindowResize() {
|
||
|
|
|
||
|
|
camera.aspect = window.innerWidth / window.innerHeight;
|
||
|
|
camera.updateProjectionMatrix();
|
||
|
|
|
||
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function getText( id ) {
|
||
|
|
|
||
|
|
return document.getElementById( id ).textContent;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
|
||
|
|
function animate() {
|
||
|
|
|
||
|
|
requestAnimationFrame( animate );
|
||
|
|
|
||
|
|
render();
|
||
|
|
stats.update();
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function render() {
|
||
|
|
|
||
|
|
delta = clock.getDelta() * 5;
|
||
|
|
|
||
|
|
if ( materialHDR.uniforms.exposure.value > 0 || materialHDR.uniforms.exposure.value < 1 ) {
|
||
|
|
|
||
|
|
rate = 0.25;
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
rate = 1;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( materialHDR.uniforms.exposure.value > 5 || materialHDR.uniforms.exposure.value <= 0 ) {
|
||
|
|
|
||
|
|
sign *= -1;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
materialHDR.uniforms.exposure.value += sign * rate * delta;
|
||
|
|
|
||
|
|
renderer.render( scene, camera );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
</script>
|
||
|
|
</body>
|
||
|
|
</html>
|