56 lines
1.5 KiB
JavaScript
56 lines
1.5 KiB
JavaScript
const Utils = { // eslint-disable-line no-unused-vars
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createLocateRewrite: function (execName) {
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function rw(path) {
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if (path.endsWith('.worker.js')) {
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return `${execName}.worker.js`;
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} else if (path.endsWith('.audio.worklet.js')) {
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return `${execName}.audio.worklet.js`;
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} else if (path.endsWith('.js')) {
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return `${execName}.js`;
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} else if (path.endsWith('.wasm')) {
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return `${execName}.wasm`;
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}
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return path;
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}
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return rw;
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},
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createInstantiatePromise: function (wasmLoader) {
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let loader = wasmLoader;
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function instantiateWasm(imports, onSuccess) {
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loader.then(function (xhr) {
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WebAssembly.instantiate(xhr.response, imports).then(function (result) {
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onSuccess(result['instance'], result['module']);
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});
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});
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loader = null;
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return {};
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}
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return instantiateWasm;
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},
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findCanvas: function () {
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const nodes = document.getElementsByTagName('canvas');
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if (nodes.length && nodes[0] instanceof HTMLCanvasElement) {
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return nodes[0];
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}
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return null;
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},
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isWebGLAvailable: function (majorVersion = 1) {
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let testContext = false;
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try {
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const testCanvas = document.createElement('canvas');
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if (majorVersion === 1) {
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testContext = testCanvas.getContext('webgl') || testCanvas.getContext('experimental-webgl');
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} else if (majorVersion === 2) {
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testContext = testCanvas.getContext('webgl2') || testCanvas.getContext('experimental-webgl2');
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}
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} catch (e) {
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// Not available
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}
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return !!testContext;
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},
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};
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