Hi Olivier, Olivier DAVID wrote: > I would like to introduce the all screen rotation (90? and/or 180?), on a > platform which this can?t be done in hardware.
I have an application which needs to work at any rotation. I considered doing something like you describe, but came to the conclusion that performance was too poor when doing a full-screen pixel-by-pixel rotation in software. So instead I have a layer between my application and DirectFB where I transform coordinates. This is easy for operations like drawing solid rectangles. To support text, I have been extending the DirectFB API to rotate fonts - I expect to finish this soon. I may also investigate rotation of JPEGs in a similar way. I suggest that before you go any further, you evaluate the slow-down that you will get from software rotation, and decide whether it is acceptable in your application. Regards, Phil. _______________________________________________ directfb-dev mailing list [email protected] http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev
