Run results for: NO GETIMAGEDATA! PutImageData vs just DrawImage

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

DrawImage half master into di2 canvas

294K/s

DrawImage whole master into di canvas

271K/s

PutImageData whole master into pid canvas

25K/s

PutImageData half master into pid2 canvas

24K/s

View exact numbers

Test name	Executions per second
✓ DrawImage half master into di2 canvas	293,921 Ops/sec
DrawImage whole master into di canvas	271,356 Ops/sec
PutImageData whole master into pid canvas	24,758 Ops/sec
PutImageData half master into pid2 canvas	24,471 Ops/sec

HTML Preparation code:

<canvas id='master' width='100' height='100'></canvas>master<br><br>
<canvas id='pid' width='100' height='100'></canvas>pid1<br><br>
<canvas id='di' width='100' height='100'></canvas>di1<br><br>
<canvas id='pid2' width='100' height='100'></canvas>pid2<br><br>
<canvas id='di2' width='100' height='100'></canvas>di2

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 pid2 = document.getElementById('pid2').getContext('2d');
var di2 = document.getElementById('di2').getContext('2d');

masterctx.fillRect(0,0,50,50);
masterctx.fillStyle = "red";
masterctx.fillRect(50,50,100,100);

var imgData = masterctx.getImageData(0,0,100,100);
var imgDatas = masterctx.getImageData(25,0,50,100);

Tests:

DrawImage whole master into di canvas
di.drawImage(master,0,0);
PutImageData whole master into pid canvas
pid.putImageData(imgData,0,0);
DrawImage half master into di2 canvas
di2.drawImage(master,25,0,50,100,25,0,50,100);
PutImageData half master into pid2 canvas
pid2.putImageData(imgDatas,25,0);

Run results for: NO GETIMAGEDATA! PutImageData vs just DrawImage

v3

DrawImage whole master into di canvas

PutImageData whole master into pid canvas

DrawImage half master into di2 canvas

PutImageData half master into pid2 canvas