Run results for: PutImageData vs DrawImage (big canvases)

Run details:

User agent: Mozilla/5.0 (Linux; Android 12; SM-T860) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser: Chrome 104

Operating system: Android

Device Platform: Tablet

Date tested: 2 years ago

Test name	Executions per second
DrawImage	136807.7 Ops/sec
DrawImage (subrectangle)	134977.4 Ops/sec
PutImageData	409.0 Ops/sec
PutImageData (subrectangle)	1323.6 Ops/sec

HTML Preparation code:

<canvas id='master' width='500' height='500'></canvas>
<canvas id='pid' width='200' height='200'></canvas>
<canvas id='di' width='200' height='200'></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');

masterctx.fillRect(0,0,50,50);
masterctx.fillStyle = "red";
masterctx.fillRect(50,50,100,100);

Tests:

DrawImage
di.drawImage(master,0,0);
DrawImage (subrectangle)
di.drawImage(master,0,0,200,200,0,0,200,200);
PutImageData
let imgData = masterctx.getImageData(0,0,500,500); pid.putImageData(imgData,0,0);
PutImageData (subrectangle)
let imgData = masterctx.getImageData(0,0,200,200); pid.putImageData(imgData,0,0);

Run results for: PutImageData vs DrawImage (big canvases)

DrawImage

DrawImage (subrectangle)

PutImageData

PutImageData (subrectangle)