<!DOCTYPE html>
<script src="../include.js"></script>
<script>
    let canvas = document.createElement("canvas");
    canvas.width = 1080;
    canvas.height = 600;

    const ctx = canvas.getContext("2d");
    ctx.fillStyle = "rgb(42, 110, 96)";
    ctx.fillRect(0, 0, 400, 300);
    let imageData = ctx.getImageData(0, 0, 800, 600);
    const buffer = imageData.data.buffer;
    window.postMessage("", "*", [buffer]);

    asyncTest(async done => {
        try {
            const result = await createImageBitm