Canvas export to image/jpeg

[gauravarya83]

I am trying to export canvas to image/jpeg using gl.domElement.toDataURL("image/jpeg"), but image is all black.
I have below properties set below properties on gl:
antialias: true
alpha: true
gl.setClearColor(0xffffff, 0);
gl.setPixelRatio(window.devicePixelRatio);

Can anyone please help. Thanks in advance.
@drcmda

[drcmda]

you need the preserveDrawingBuffer flag

[gauravarya83]

Thanks, it worked :)