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Minimal three.js shader example.
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<html lang="en"> | |
<head> | |
<meta charset="utf-8"> | |
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0"> | |
<style> | |
body { | |
margin: 0px; | |
overflow: hidden; | |
} | |
</style> | |
</head> | |
<body> | |
<div id="container"></div> | |
<script src="//cdnjs.cloudflare.com/ajax/libs/three.js/r126/three.min.js"></script> | |
<script id="vertexShader" type="x-shader/x-vertex"> | |
uniform float time; | |
uniform vec2 resolution; | |
void main() { | |
gl_Position = vec4( position, 1.0 ); | |
} | |
</script> | |
<script id="fragmentShader" type="x-shader/x-fragment"> | |
uniform float time; | |
uniform vec2 resolution; | |
void main() { | |
float x = mod(time + gl_FragCoord.x, 20.) < 10. ? 1. : 0.; | |
float y = mod(time + gl_FragCoord.y, 20.) < 10. ? 1. : 0.; | |
gl_FragColor = vec4(vec3(min(x, y)), 1.); | |
} | |
</script> | |
<script> | |
var container; | |
var camera, scene, renderer; | |
var uniforms, material, mesh; | |
var mouseX = 0, mouseY = 0, | |
lat = 0, lon = 0, phy = 0, theta = 0; | |
var windowHalfX = window.innerWidth / 2; | |
var windowHalfY = window.innerHeight / 2; | |
init(); | |
var startTime = Date.now(); | |
animate(); | |
function init() { | |
container = document.getElementById('container'); | |
camera = new THREE.Camera(); | |
camera.position.z = 1; | |
scene = new THREE.Scene(); | |
uniforms = { | |
time: { type: "f", value: 1.0 }, | |
resolution: { type: "v2", value: new THREE.Vector2() } | |
}; | |
material = new THREE.ShaderMaterial({ | |
uniforms: uniforms, | |
vertexShader: document.getElementById('vertexShader').textContent, | |
fragmentShader: document.getElementById('fragmentShader').textContent | |
}); | |
mesh = new THREE.Mesh(new THREE.PlaneGeometry(2, 2), material); | |
scene.add(mesh); | |
renderer = new THREE.WebGLRenderer(); | |
renderer.setPixelRatio(window.devicePixelRatio ? window.devicePixelRatio : 1); | |
container.appendChild(renderer.domElement); | |
uniforms.resolution.value.x = window.innerWidth; | |
uniforms.resolution.value.y = window.innerHeight; | |
renderer.setSize(window.innerWidth, window.innerHeight); | |
} | |
function animate() { | |
requestAnimationFrame(animate); | |
render(); | |
} | |
function render() { | |
var elapsedMilliseconds = Date.now() - startTime; | |
var elapsedSeconds = elapsedMilliseconds / 1000.; | |
uniforms.time.value = 60. * elapsedSeconds; | |
renderer.render(scene, camera); | |
} | |
</script> | |
</body> | |
</html> |
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