Run results for: PutImageData vs DrawImage

Run details:

User agent: Mozilla/5.0 (Linux; Android 13; ASUS_AI2202) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.5790.167 Mobile Safari/537.36 OPR/77.2.4095.74586

Browser: Opera Mobile 77

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
DrawImage whole master into di canvas	150620.8 Ops/sec
PutImageData whole master into pid canvas	6661.2 Ops/sec
DrawImage half master into di canvas	134678.3 Ops/sec
PutImageData half master into pid canvas	4920.1 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);

Run results for: PutImageData vs DrawImage

GetImageData with PutImageData vs just DrawImage

DrawImage whole master into di canvas

PutImageData whole master into pid canvas

DrawImage half master into di canvas

PutImageData half master into pid canvas