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Does HTML5 Canvas support Double Buffering?
For double buffering on the canvas, create a 2nd canvas element and draw to it. After that draw the image to the first canvas using the drawImage() method,
// canvas element
var canvas1 = document.getElementById('canvas');
var context1 = canvas1.getContext('2d');
// buffer canvas
var canvas2 = document.createElement('canvas');
canvas2.width = 250;
canvas2.height =250;
var context2 = canvas2.getContext('2d');
// create on the canvas
context2.beginPath();
context2.moveTo(10,10);
context2.lineTo(10,30);
context2.stroke();
//render the buffered canvas
context1.drawImage(canvas2, 0, 0);
Updated on: 24-Jan-2020
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