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Run results for:
OffscreenCanvas GetImageData
OffscreenCanvas GetImageData
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<iframe src="https://measurethat.net/Embed?id=626807" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36
Browser:
Chrome 146
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one month ago
Test name
Executions per second
Normal
175.9 Ops/sec
OffscreenCanvas
89.1 Ops/sec
Script Preparation code:
let canvas = document.createElement("canvas") let width = 3460; let height = 2160; canvas.width = width; canvas.height = height; let canvas2 = new OffscreenCanvas(width, height) let ctx = canvas.getContext('2d') let ctx2 = canvas2.getContext('2d') let imageData = new ImageData(width,height); ctx.putImageData(imageData,0, 0); document.body.append(canvas) ctx2.putImageData(imageData,0 ,0) window.ctx = ctx; window.ctx2 = ctx2 window.width = width; window.height = height;
Tests:
Normal
ctx.getImageData(0,0, width, height) let imageData = new ImageData(1,1); ctx.putImageData(imageData,5,5);
OffscreenCanvas
ctx2.getImageData(0,0, width, height) let imageData = new ImageData(1,1); ctx2.putImageData(imageData, 5,5);