mirror of
https://github.com/greggman/twgl.js.git
synced 2025-12-08 19:26:07 +00:00
129 lines
4.9 KiB
HTML
129 lines
4.9 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf8">
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<!--
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@license twgl.js Copyright (c) 2015, Gregg Tavares All Rights Reserved.
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Available via the MIT license.
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see: http://github.com/greggman/twgl.js for details
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-->
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<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
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<meta property="og:title" content="TWGL.js - crossorigin" />
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<meta property="og:type" content="website" />
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<meta property="og:image" content="http://twgljs.org/examples/screenshots/crossorigin.png" />
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<meta property="og:description" content="TWGL.js - crossorigin" />
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<meta property="og:url" content="http://twgljs.org" />
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<meta name="twitter:card" content="summary_large_image">
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<meta name="twitter:site" content="@greggman">
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<meta name="twitter:creator" content="@greggman">
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<meta name="twitter:domain" content="twgljs.org">
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<meta name="twitter:title" content="TWGL.js - crossorigin">
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<meta name="twitter:url" content="http://twgljs.org/examples/crossorigin.html">
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<meta name="twitter:description" content="TWGL.js - crossorigin">
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<meta name="twitter:image:src" content="http://twgljs.org/examples/screenshots/crossorigin.png">
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<link href="/resources/images/twgljs-icon.png" rel="shortcut icon" type="image/png">
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<title>twgl.js - twgl crossorigin</title>
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<style>
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html, body {
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margin: 0;
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font-family: monospace;
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height: 100%;
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}
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canvas {
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display: block;
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width: 100%;
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height: 100%;
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}
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#b {
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position: absolute;
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top: 10px;
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width: 100%;
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text-align: center;
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z-index: 2;
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}
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</style>
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</head>
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<body>
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<canvas id="c"></canvas>
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<div id="b"><a href="http://twgljs.org">twgl.js</a> - crossorigin</div>
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</body>
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<script type="module">
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import * as twgl from '../dist/7.x/twgl-full.module.js';
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import vs from './js/phong.vs.js';
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import fs from './js/phong.fs.js';
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twgl.setDefaults({attribPrefix: "a_"});
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const m4 = twgl.m4;
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const gl = document.querySelector("#c").getContext("webgl");
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const programInfo = twgl.createProgramInfo(gl, [vs, fs]);
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const arrays = {
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position: [1, 1, -1, 1, 1, 1, 1, -1, 1, 1, -1, -1, -1, 1, 1, -1, 1, -1, -1, -1, -1, -1, -1, 1, -1, 1, 1, 1, 1, 1, 1, 1, -1, -1, 1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 1, -1, -1, 1, 1, 1, 1, -1, 1, 1, -1, -1, 1, 1, -1, 1, -1, 1, -1, 1, 1, -1, 1, -1, -1, -1, -1, -1],
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normal: [1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1],
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texcoord: [1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1],
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indices: [0, 1, 2, 0, 2, 3, 4, 5, 6, 4, 6, 7, 8, 9, 10, 8, 10, 11, 12, 13, 14, 12, 14, 15, 16, 17, 18, 16, 18, 19, 20, 21, 22, 20, 22, 23],
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};
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const bufferInfo = twgl.createBufferInfoFromArrays(gl, arrays);
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const tex = twgl.createTexture(gl, {
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min: gl.NEAREST,
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mag: gl.NEAREST,
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src: "https://farm6.staticflickr.com/5795/21506301808_efb27ed699_q_d.jpg",
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// crossOrigin is now handled by default. Only set this property
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// if you want a specific value for crossOrigin
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// crossOrigin: "", // either this or use twgl.setDefaults
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});
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const uniforms = {
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u_lightWorldPos: [1, 5, -10],
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u_lightColor: [1, 1, 1, 1],
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u_ambient: [0, 0, 0, 1],
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u_specular: [1, 1, 1, 1],
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u_shininess: 1,
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u_specularFactor: 0,
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u_diffuse: tex,
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};
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function render(time) {
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time *= 0.001;
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twgl.resizeCanvasToDisplaySize(gl.canvas);
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gl.viewport(0, 0, gl.canvas.width, gl.canvas.height);
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gl.enable(gl.DEPTH_TEST);
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gl.enable(gl.CULL_FACE);
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gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
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const projection = m4.perspective(30 * Math.PI / 180, gl.canvas.clientWidth / gl.canvas.clientHeight, 0.5, 10);
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const eye = [1, 4, -6];
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const target = [0, 0, 0];
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const up = [0, 1, 0];
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const camera = m4.lookAt(eye, target, up);
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const view = m4.inverse(camera);
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const viewProjection = m4.multiply(projection, view);
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const world = m4.rotationY(time);
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uniforms.u_viewInverse = camera;
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uniforms.u_world = world;
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uniforms.u_worldInverseTranspose = m4.transpose(m4.inverse(world));
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uniforms.u_worldViewProjection = m4.multiply(viewProjection, world);
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gl.useProgram(programInfo.program);
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twgl.setBuffersAndAttributes(gl, programInfo, bufferInfo);
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twgl.setUniforms(programInfo, uniforms);
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gl.drawElements(gl.TRIANGLES, bufferInfo.numElements, gl.UNSIGNED_SHORT, 0);
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requestAnimationFrame(render);
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}
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requestAnimationFrame(render);
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</script>
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</html>
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