blob: 10e3abe91e925819aebe9e10f7ab97f0913f7e7d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
var Utils = {
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 rw;
},
createInstantiatePromise: function(wasmLoader) {
function instantiateWasm(imports, onSuccess) {
wasmLoader.then(function(xhr) {
WebAssembly.instantiate(xhr.response, imports).then(function(result) {
onSuccess(result['instance'], result['module']);
});
});
wasmLoader = null;
return {};
};
return instantiateWasm;
},
findCanvas: function() {
var nodes = document.getElementsByTagName('canvas');
if (nodes.length && nodes[0] instanceof HTMLCanvasElement) {
return nodes[0];
}
throw new Error("No canvas found");
},
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) {}
return !!testContext;
}
};
|