phasm/examples/buffer.html
2022-06-24 19:48:07 +02:00

55 lines
1.3 KiB
HTML

<html>
<head>
<title>Examples - Buffer</title>
</head>
<body>
<h1>Buffer</h1>
<a href="index.html">List</a> - <a href="buffer.py">Source</a> - <a href="buffer.wat">WebAssembly</a>
<div style="white-space: pre;" id="results"></div>
<script type="text/javascript">
let importObject = {};
let results = document.getElementById('results');
WebAssembly.instantiateStreaming(fetch('buffer.wasm'), importObject)
.then(app => {
// Allocate room within the memory of the WebAssembly class
let size = 8;
let offset = app.instance.exports.___new_reference___(4 * size);
var i32 = new Uint32Array(app.instance.exports.memory.buffer, offset, size);
//Fill it
let sum = 0;
for (var i = 0; i < size; i++) {
i32[i] = i;
sum += i;
}
{
let span = document.createElement('span');
span.innerHTML = 'expected result = ' + sum;
results.appendChild(span);
let br = document.createElement('br');
results.appendChild(br);
}
{
let span = document.createElement('span');
span.innerHTML = 'actual result = ' + app.instance.exports.sum(offset);
results.appendChild(span);
let br = document.createElement('br');
results.appendChild(br);
}
for (var i = 0; i < size; i++) {
console.log(i32[i]);
}
});
</script>
</body>
</html>