You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
316 lines
7.5 KiB
316 lines
7.5 KiB
3 years ago
|
<!DOCTYPE html>
|
||
|
|
<html lang="en">
|
||
|
|
<head>
|
||
|
|
<title>three.js WebGL 2 - Uniform Buffer Objects</title>
|
||
|
|
<meta charset="utf-8">
|
||
|
|
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
|
||
|
|
<link type="text/css" rel="stylesheet" href="main.css">
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body>
|
||
|
|
|
||
|
|
<div id="info">
|
||
|
|
<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - Uniform Buffer Objects
|
||
|
|
</div>
|
||
|
|
<div id="container"></div>
|
||
|
|
|
||
|
|
<script id="vertexShader1" type="x-shader/x-vertex">
|
||
|
|
|
||
|
|
uniform ViewData {
|
||
|
|
mat4 projectionMatrix;
|
||
|
|
mat4 viewMatrix;
|
||
|
|
};
|
||
|
|
|
||
|
|
uniform mat4 modelMatrix;
|
||
|
|
uniform mat3 normalMatrix;
|
||
|
|
|
||
|
|
in vec3 position;
|
||
|
|
in vec3 normal;
|
||
|
|
|
||
|
|
out vec3 vPositionEye;
|
||
|
|
out vec3 vNormalEye;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
|
||
|
|
vec4 vertexPositionEye = viewMatrix * modelMatrix * vec4( position, 1.0 );
|
||
|
|
|
||
|
|
vPositionEye = vertexPositionEye.xyz;
|
||
|
|
vNormalEye = normalMatrix * normal;
|
||
|
|
|
||
|
|
gl_Position = projectionMatrix * vertexPositionEye;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<script id="fragmentShader1" type="x-shader/x-fragment">
|
||
|
|
|
||
|
|
precision highp float;
|
||
|
|
|
||
|
|
uniform LightingData {
|
||
|
|
vec3 position;
|
||
|
|
vec3 ambientColor;
|
||
|
|
vec3 diffuseColor;
|
||
|
|
vec3 specularColor;
|
||
|
|
float shininess;
|
||
|
|
} Light;
|
||
|
|
|
||
|
|
uniform vec3 color;
|
||
|
|
|
||
|
|
in vec3 vPositionEye;
|
||
|
|
in vec3 vNormalEye;
|
||
|
|
|
||
|
|
out vec4 fragColor;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
|
||
|
|
// a very basic lighting equation (Phong reflection model) for testing
|
||
|
|
|
||
|
|
vec3 l = normalize( Light.position - vPositionEye );
|
||
|
|
vec3 n = normalize( vNormalEye );
|
||
|
|
vec3 e = - normalize( vPositionEye );
|
||
|
|
vec3 r = normalize( reflect( - l, n ) );
|
||
|
|
|
||
|
|
float diffuseLightWeighting = max( dot( n, l ), 0.0 );
|
||
|
|
float specularLightWeighting = max( dot( r, e ), 0.0 );
|
||
|
|
|
||
|
|
specularLightWeighting = pow( specularLightWeighting, Light.shininess );
|
||
|
|
|
||
|
|
vec3 lightWeighting = Light.ambientColor +
|
||
|
|
Light.diffuseColor * diffuseLightWeighting +
|
||
|
|
Light.specularColor * specularLightWeighting;
|
||
|
|
|
||
|
|
fragColor = vec4( color.rgb * lightWeighting.rgb, 1.0 );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<script id="vertexShader2" type="x-shader/x-vertex">
|
||
|
|
|
||
|
|
uniform ViewData {
|
||
|
|
mat4 projectionMatrix;
|
||
|
|
mat4 viewMatrix;
|
||
|
|
};
|
||
|
|
|
||
|
|
uniform mat4 modelMatrix;
|
||
|
|
|
||
|
|
in vec3 position;
|
||
|
|
in vec2 uv;
|
||
|
|
|
||
|
|
out vec2 vUv;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
|
||
|
|
vUv = uv;
|
||
|
|
|
||
|
|
gl_Position = projectionMatrix * viewMatrix * modelMatrix * vec4( position, 1.0 );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<script id="fragmentShader2" type="x-shader/x-fragment">
|
||
|
|
|
||
|
|
precision highp float;
|
||
|
|
|
||
|
|
uniform sampler2D diffuseMap;
|
||
|
|
|
||
|
|
in vec2 vUv;
|
||
|
|
|
||
|
|
out vec4 fragColor;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
|
||
|
|
fragColor = texture( diffuseMap, vUv );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<!-- Import maps polyfill -->
|
||
|
|
<!-- Remove this when import maps will be widely supported -->
|
||
|
|
<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
|
||
|
|
|
||
|
|
<script type="importmap">
|
||
|
|
{
|
||
|
|
"imports": {
|
||
|
|
"three": "../build/three.module.js",
|
||
|
|
"three/addons/": "./jsm/"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
</script>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<script type="module">
|
||
|
|
|
||
|
|
import * as THREE from 'three';
|
||
|
|
|
||
|
|
import WebGL from 'three/addons/capabilities/WebGL.js';
|
||
|
|
|
||
|
|
let camera, scene, renderer, clock;
|
||
|
|
|
||
|
|
init();
|
||
|
|
animate();
|
||
|
|
|
||
|
|
function init() {
|
||
|
|
|
||
|
|
if ( WebGL.isWebGL2Available() === false ) {
|
||
|
|
|
||
|
|
document.body.appendChild( WebGL.getWebGL2ErrorMessage() );
|
||
|
|
return;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
const container = document.getElementById( 'container' );
|
||
|
|
|
||
|
|
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.1, 100 );
|
||
|
|
camera.position.set( 0, 0, 25 );
|
||
|
|
|
||
|
|
scene = new THREE.Scene();
|
||
|
|
camera.lookAt( scene.position );
|
||
|
|
|
||
|
|
clock = new THREE.Clock();
|
||
|
|
|
||
|
|
// geometry
|
||
|
|
|
||
|
|
const geometry1 = new THREE.TetrahedronGeometry();
|
||
|
|
const geometry2 = new THREE.BoxGeometry();
|
||
|
|
|
||
|
|
// texture
|
||
|
|
|
||
|
|
const texture = new THREE.TextureLoader().load( 'textures/crate.gif' );
|
||
|
|
|
||
|
|
// uniforms groups
|
||
|
|
|
||
|
|
// Camera and lighting related data are perfect examples of using UBOs since you have to store these
|
||
|
|
// data just once. They can be shared across all shader programs.
|
||
|
|
|
||
|
|
const cameraUniformsGroup = new THREE.UniformsGroup();
|
||
|
|
cameraUniformsGroup.setName( 'ViewData' );
|
||
|
|
cameraUniformsGroup.add( new THREE.Uniform( camera.projectionMatrix ) ); // projection matrix
|
||
|
|
cameraUniformsGroup.add( new THREE.Uniform( camera.matrixWorldInverse ) ); // view matrix
|
||
|
|
|
||
|
|
const lightingUniformsGroup = new THREE.UniformsGroup();
|
||
|
|
lightingUniformsGroup.setName( 'LightingData' );
|
||
|
|
lightingUniformsGroup.add( new THREE.Uniform( new THREE.Vector3( 0, 0, 10 ) ) ); // light position
|
||
|
|
lightingUniformsGroup.add( new THREE.Uniform( new THREE.Color( 0x333333 ) ) ); // ambient color
|
||
|
|
lightingUniformsGroup.add( new THREE.Uniform( new THREE.Color( 0xaaaaaa ) ) ); // diffuse color
|
||
|
|
lightingUniformsGroup.add( new THREE.Uniform( new THREE.Color( 0xcccccc ) ) ); // specular color
|
||
|
|
lightingUniformsGroup.add( new THREE.Uniform( 64 ) ); // shininess
|
||
|
|
|
||
|
|
// materials
|
||
|
|
|
||
|
|
const material1 = new THREE.RawShaderMaterial( {
|
||
|
|
uniforms: {
|
||
|
|
modelMatrix: { value: null },
|
||
|
|
normalMatrix: { value: null },
|
||
|
|
color: { value: null }
|
||
|
|
},
|
||
|
|
vertexShader: document.getElementById( 'vertexShader1' ).textContent,
|
||
|
|
fragmentShader: document.getElementById( 'fragmentShader1' ).textContent,
|
||
|
|
glslVersion: THREE.GLSL3
|
||
|
|
} );
|
||
|
|
|
||
|
|
const material2 = new THREE.RawShaderMaterial( {
|
||
|
|
uniforms: {
|
||
|
|
modelMatrix: { value: null },
|
||
|
|
diffuseMap: { value: null },
|
||
|
|
},
|
||
|
|
vertexShader: document.getElementById( 'vertexShader2' ).textContent,
|
||
|
|
fragmentShader: document.getElementById( 'fragmentShader2' ).textContent,
|
||
|
|
glslVersion: THREE.GLSL3
|
||
|
|
} );
|
||
|
|
|
||
|
|
// meshes
|
||
|
|
|
||
|
|
for ( let i = 0; i < 200; i ++ ) {
|
||
|
|
|
||
|
|
let mesh;
|
||
|
|
|
||
|
|
if ( i % 2 === 0 ) {
|
||
|
|
|
||
|
|
mesh = new THREE.Mesh( geometry1, material1.clone() );
|
||
|
|
|
||
|
|
mesh.material.uniformsGroups = [ cameraUniformsGroup, lightingUniformsGroup ];
|
||
|
|
mesh.material.uniforms.modelMatrix.value = mesh.matrixWorld;
|
||
|
|
mesh.material.uniforms.normalMatrix.value = mesh.normalMatrix;
|
||
|
|
mesh.material.uniforms.color.value = new THREE.Color( 0xffffff * Math.random() );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
mesh = new THREE.Mesh( geometry2, material2.clone() );
|
||
|
|
|
||
|
|
mesh.material.uniformsGroups = [ cameraUniformsGroup ];
|
||
|
|
mesh.material.uniforms.modelMatrix.value = mesh.matrixWorld;
|
||
|
|
mesh.material.uniforms.diffuseMap.value = texture;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
scene.add( mesh );
|
||
|
|
|
||
|
|
const s = 1 + Math.random() * 0.5;
|
||
|
|
|
||
|
|
mesh.scale.x = s;
|
||
|
|
mesh.scale.y = s;
|
||
|
|
mesh.scale.z = s;
|
||
|
|
|
||
|
|
mesh.rotation.x = Math.random() * Math.PI;
|
||
|
|
mesh.rotation.y = Math.random() * Math.PI;
|
||
|
|
mesh.rotation.z = Math.random() * Math.PI;
|
||
|
|
|
||
|
|
mesh.position.x = Math.random() * 40 - 20;
|
||
|
|
mesh.position.y = Math.random() * 40 - 20;
|
||
|
|
mesh.position.z = Math.random() * 20 - 10;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
|
||
|
|
renderer = new THREE.WebGLRenderer( { antialias: true } );
|
||
|
|
renderer.setPixelRatio( window.devicePixelRatio );
|
||
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
||
|
|
container.appendChild( renderer.domElement );
|
||
|
|
|
||
|
|
window.addEventListener( 'resize', onWindowResize, false );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function onWindowResize() {
|
||
|
|
|
||
|
|
camera.aspect = window.innerWidth / window.innerHeight;
|
||
|
|
camera.updateProjectionMatrix();
|
||
|
|
|
||
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
|
||
|
|
function animate() {
|
||
|
|
|
||
|
|
requestAnimationFrame( animate );
|
||
|
|
|
||
|
|
const delta = clock.getDelta();
|
||
|
|
|
||
|
|
scene.traverse( function ( child ) {
|
||
|
|
|
||
|
|
if ( child.isMesh ) {
|
||
|
|
|
||
|
|
child.rotation.x += delta * 0.5;
|
||
|
|
child.rotation.y += delta * 0.3;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
renderer.render( scene, camera );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|