Hi, I don't remember if Igor send the link: https://vimeo.com/45137985 This demo is very basic, demonstrating a rendering speed of Athens using Cairo backend. The scene consists from very simple elements, but on its highest zoom it renders like 3^10 visible elements per frame. The output image having transparent background by default, but blitting it to morphic world ignores it (however it works when you drag it.. a bit strange ;). Perhaps i should use different blit method for transferring bitmap to display. -- Marcus Denker -- http://marcusdenker.de