chromium/third_party/blink/web_tests/fast/canvas/canvas-drawMesh-identity-expected.html

<!doctype html>
<p>Verifies that an identity drawMesh() renders the same as direct canvas draw commands.</p>
<canvas id='canvas' width='256' height='256'></canvas>

<script>
const canvas = document.getElementById('canvas'),
ctx = canvas.getContext('2d', {alpha: false});

ctx.fillStyle = 'green';
ctx.fillRect( 0, 0, 256, 256 );
ctx.fillStyle = 'red';
ctx.fillRect( 0, 0, 256, 128 );
ctx.fillStyle = 'blue';
ctx.fillRect( 128, 0, 128, 128 );
ctx.fillStyle = 'yellow';
ctx.fillRect( 128, 128, 128, 128 );

</script>