Run results for: save/restore vs manual - shadow

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_3 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) CriOS/65.0.3325.152 Mobile/14G60 Safari/602.1

Browser: Chrome Mobile iOS 65

Operating system: iOS 10.3.3

Device Platform: iPhone

Date tested: 6 years ago

Test name	Executions per second
manual	1901.9 Ops/sec
save/restore	800.6 Ops/sec

HTML Preparation code:

<canvas id="canvasOne" width="400" height="400"></canvas>
<canvas id="canvasTwo" width="400" height="400"></canvas>

Script Preparation code:

var canvasOne = document.getElementById('canvasOne');
var ctxOne = canvasOne.getContext("2d");

var canvasTwo = document.getElementById('canvasTwo');
var ctxTwo = canvasTwo.getContext("2d");

Tests:

manual
ctxOne.beginPath(); ctxOne.moveTo(20, 20); ctxOne.lineTo(40, 40); ctxOne.shadowBlur = 20; ctxOne.shadowOffsetX = 10; ctxOne.shadowOffsetY = 10; ctxOne.shadowColor = '#f62459'; ctxOne.strokeStyle = '#f62459'; ctxOne.stroke(); ctxOne.shadowBlur = 0; ctxOne.shadowOffsetX = 0; ctxOne.shadowOffsetY = 0; ctxOne.shadowColor = 'rgba(0, 0, 0, 0)';
save/restore
ctxTwo.save(); ctxTwo.beginPath(); ctxTwo.moveTo(20, 20); ctxTwo.lineTo(40, 40); ctxTwo.shadowBlur = 20; ctxTwo.shadowOffsetX = 10; ctxTwo.shadowOffsetY = 10; ctxTwo.shadowColor = '#f62459'; ctxTwo.strokeStyle = '#f62459'; ctxTwo.stroke(); ctxTwo.restore();