[voraa]

var rt = this.add.renderTexture(10, 10, 700, 500);
rt.fill(0x00FF00);
rt.snapshot(callback);

function callback(imageElement) // imageElement - это HTMLImageElement
{
	console.log('snapshot()');

	console.log('Link ' +imageElement.src);

     // Что тут нужно сделать?

	const canvas = document.createElement('canvas');
	const ctx = canvas.getContext('2d');
	canvas.height = imageElement.naturalHeight;
	canvas.width = imageElement.naturalWidth;
	ctx.drawImage(imageElement, 0, 0);
	const dataurl = canvas.toDataURL('image/png', 1);

	const anchor = document.createElement('a');
	anchor.href = dataurl;
	anchor.download = 'img.png';
	anchor.type = 'image/png'
	anchor.click();
}