<!doctype html>
<style>
svg {
  display: none;
}
canvas {
  border: 1px solid black;
}
</style>

<svg id="s1" width="200px" height="20px">
  <image id="img1" href="resources/pattern.png" x="0" y="0" width="20px" height="20px" />
  <image id="img2" href="resources/pattern.png" x="20" y="0" width="40px" height="40px" />
  <image id="img3" href="resources/pattern.png" x="40" y="0" width="40px" height="40px" />
  <image id="img4" href="invalid" x="60" y="0" width="20px" height="20px" />
  <image id="img5" href="resources/pattern.png" x="80" y="0" width="20px" height="20px" />
</svg>

<canvas id="c1" width="20" height="20"></canvas>
<canvas id="c2" width="20" height="20"></canvas>
<canvas id="c3" width="20" height="20"></canvas>
<canvas id="c4" width="20" height="20"></canvas>
<canvas id="c5" width="20" height="20"></canvas>
<canvas id="c6" width="20" height="20"></canvas>

<script>
var draw = function(target, img, x, y, opts) {
  document.getElementById(img).addEventListener("load", function() {
    createImageBitmap(this, opts).then((ib) => {
      document.getElementById(target).getContext("2d").drawImage(
        ib, x || 0, y || 0);
    });
  });
}

draw("c1", "img1");
draw("c2", "img2", 10, 10);
draw("c3", "img3");
draw("c4", "img4");
document.getElementById("c5").getContext("2d").drawImage(
  document.getElementById("img5"), 0, 0);
draw("c6", "img2", 0, 0, {resizeWidth: 10, resizeHeight: 10});

</script>