You can lock the Surface and draw a single pixel directly to it, but personally I think that is wrong. You should use the DrawLine function with a line length of 1. This is slow but it uses the API as it is intended and avoids the risk of your assumed knowledge of the storage of the Surface being incorrect in some situations.
By asking what algorithms are used for these drawing functions, I assume you are asking how the drawing is implemented and not just the functions to do it (like DrawRectangle, DrawLine)? This will depend on the platform, and on whether hardware acceleration is used. For instance on one platform I know, the DrawLine when using hardware is slower than when using a software implementation: but the hardware does antialiasing while the software does not. these issues of particular platforms, and even of different choices on the same platform, can be very subtle but should always be assumed to be platform-dependent - that is, you should never assume a particular implementation unless you want to be stuck to one platform for ever. Chris ===================== Chris Bore BORES Signal Processing www.bores.com -----Original Message----- From: directfb-users-boun...@directfb.org [mailto:directfb-users-boun...@directfb.org] On Behalf Of tomaszdro...@interia.eu Sent: 21 October 2009 17:43 To: directfb-users@directfb.org Subject: [directfb-users] Method for drawing single pixel. Line, rectangle, triangle drawing algorithms implemented in directFB I would like to know what algorithms are used to draw - line - rectangle - triangle in directFB. I wont to have possibility to draw single pixel. I think of use DrawLine(), but - is there a better way, eg some method to get into one pixel/ to get into frame buffer? I need function to draw one pixel, for further shapes drawing - eg ellipse. ---------------------------------------------------------------------- Zobacz najwiekszy samolot na swiecie! Kliknij >>> http://link.interia.pl/f238f _______________________________________________ directfb-users mailing list directfb-users@directfb.org http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-users _______________________________________________ directfb-users mailing list directfb-users@directfb.org http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-users
