draw_image.html | Explore in Territory

<!DOCTYPE html>
<html>
<body>
<script src="../resources/runner.js"></script>
<script>

var source = document.createElement("canvas");
source.width = 300;
source.height = 150;
source.getContext("2d").fillStyle = 'green';
source.getContext("2d").fillRect(0, 0, source.width, source.height);

var target = document.createElement("canvas");
target.width = source.width;
target.height = source.height;
var context = target.getContext("2d")
document.body.appendChild(target);

function startPerfTest() {
    context.drawImage(source, 0, 0);
    // Drawing to self is just to flush out the content when
    // accelerated 2D canvas or display list 2D canvas are in use.
    context.drawImage(target, 0, 0, 1, 1, 0, 0, 1, 1);
    requestAnimationFrame(startPerfTest);
}

window.onload = function () {
    startPerfTest();
}

</script>
</body>
</html>

chromium/tools/perf/page_sets/simple_canvas/draw_image.html