<!DOCTYPE html>
<html>
<head>
<canvas id="canvas" width="150" height="150"></canvas>
<script>
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 150, 150);
ctx.beginPath();
ctx.moveTo(0, 0);
ctx.moveTo(0, -1);
ctx.lineTo(0, 150);
ctx.lineTo(150, 150);
// The coordinate '149.99999' makes skia use GrConvexPolyEffect to handle the points.
// The result should be same as '150'. So this test checks if the GrConvexPolyEffect
// works well.
ctx.lineTo(149.99999, -1);
ctx.closePath();
ctx.clip();
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 150, 150);
</script>
</body></html>