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