Benchmark: drawImage() scaling up & down small performance

Script Preparation code:

$sourceWidth = 100;
$sourceHeight = 100;
$sourceCanvas = document.createElement("canvas");
$sourceCanvas.width = $sourceWidth;
$sourceCanvas.height = $sourceHeight;
$sourceContext = $sourceCanvas.getContext("2d");
$sourceContext.fillStyle = "rgba(0,100,200,1)";
$sourceContext.fillRect(0, 0, $sourceWidth, $sourceHeight);

$destCanvas = document.createElement("canvas");
$destCanvas.width = 3000;
$destCanvas.height = 3000;
$destContext = $destCanvas.getContext("2d");

Tests:

Scaling from a small canvas area to a small canvas area (no scaling)
$destContext.drawImage($sourceCanvas, 0, 0, $sourceWidth, $sourceHeight, 0, 0, $sourceWidth, $sourceHeight); // Force the drawImage call to be evaluated within this benchmark code: $destContext.getImageData(0, 0, 1, 1);
Scaling from a small canvas area to a smaller canvas area
$destContext.drawImage($sourceCanvas, 0, 0, $sourceWidth, $sourceHeight, 0, 0, 50, 50); // Force the drawImage call to be evaluated within this benchmark code: $destContext.getImageData(0, 0, 1, 1);
Scaling from a small canvas area to a large canvas area
$destContext.drawImage($sourceCanvas, 0, 0, $sourceWidth, $sourceHeight, 0, 0, 3000, 3000); // Force the drawImage call to be evaluated within this benchmark code: $destContext.getImageData(0, 0, 1, 1);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Scaling from a small canvas area to a small canvas area (no scaling)
Scaling from a small canvas area to a smaller canvas area
Scaling from a small canvas area to a large canvas area

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.2 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 16 on iOS 16.2

View result in a separate tab

Test name	Executions per second
Scaling from a small canvas area to a small canvas area (no scaling)	1155.6 Ops/sec
Scaling from a small canvas area to a smaller canvas area	1116.0 Ops/sec
Scaling from a small canvas area to a large canvas area	239.6 Ops/sec

drawImage() scaling up & down small performance (version: 0)

Comparing performance of: Scaling from a small canvas area to a small canvas area (no scaling) vs Scaling from a small canvas area to a smaller canvas area vs Scaling from a small canvas area to a large canvas area

Created: one year ago by: Guest

Jump to the latest result

Scaling from a small canvas area to a small canvas area (no scaling)

Scaling from a small canvas area to a smaller canvas area

Scaling from a small canvas area to a large canvas area

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A