Run results for: PutImageData vs DrawImage vs fillRect

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:121.0) Gecko/20100101 Firefox/121.0

Browser: Firefox 121

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

rect

1.2M/s

DrawImage half master into di canvas

337K/s

DrawImage whole master into di canvas

295K/s

PutImageData half master into pid canvas

72K/s

PutImageData whole master into pid canvas

65K/s

View exact numbers

Test name	Executions per second
✓ rect	1,158,271 Ops/sec
DrawImage half master into di canvas	337,183 Ops/sec
DrawImage whole master into di canvas	295,254 Ops/sec
PutImageData half master into pid canvas	72,414 Ops/sec
PutImageData whole master into pid canvas	65,159 Ops/sec

HTML Preparation code:

<canvas id='master' width='100' height='100'></canvas>
<canvas id='pid' width='100' height='100'></canvas>
<canvas id='di' width='100' height='100'></canvas>
<canvas id='rect' width='100' height='100'></canvas>

Script Preparation code:

var master = document.getElementById('master');
var masterctx = master.getContext('2d');
var pid = document.getElementById('pid').getContext('2d');
var di = document.getElementById('di').getContext('2d');
var rect = document.getElementById('rect').getContext('2d');

masterctx.fillRect(0,0,50,50);
masterctx.fillStyle = "red";
masterctx.fillRect(50,50,100,100);

Tests: