Run results for: PutImageData vs DrawImage (big canvases)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 26 days ago

Test name	Executions per second
DrawImage	694427.1 Ops/sec
DrawImage (subrectangle)	705198.9 Ops/sec
PutImageData	1470.3 Ops/sec
PutImageData (subrectangle)	8690.5 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)