Run results for: PutImageData vs DrawImage

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Mobile Safari/537.36 EdgA/132.0.0.0

Browser: Chrome Mobile 132

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

DrawImage whole master into di canvas

129K/s

DrawImage half master into di canvas

77K/s

PutImageData half master into pid canvas

11K/s

PutImageData whole master into pid canvas

9K/s

View exact numbers

Test name	Executions per second
✓ DrawImage whole master into di canvas	129,137 Ops/sec
DrawImage half master into di canvas	77,411 Ops/sec
PutImageData half master into pid canvas	11,033 Ops/sec
PutImageData whole master into pid canvas	9,375 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>

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 whole master into di canvas
di.drawImage(master,0,0);
PutImageData whole master into pid canvas
let imgData = masterctx.getImageData(0,0,100,100); pid.putImageData(imgData,0,0);
DrawImage half master into di canvas
di.drawImage(master,25,0,50,100,25,0,50,100);
PutImageData half master into pid canvas
let imgData = masterctx.getImageData(25,0,75,100); pid.putImageData(imgData,25,0);