On Thursday 15 March 2012 15:22:34 Geert Uytterhoeven wrote: > On Thu, Mar 15, 2012 at 20:08, Mike Frysinger wrote: > > On Thursday 15 March 2012 05:23:50 Wu, Aaron wrote: > >> Old image of last application would retain for a while when starting a > >> new application, this patch clear the frambuffer before displaying > >> every time the fb is opened. > > > > i'm not sure the behavior you describe is wrong. in fact, i'm pretty > > sure it sounds correct. if an app writes an image to the framebuffer > > and then quits, that image should stay there indefinitely until > > something else opens the framebuffer and draws their own image. > > Indeed. Else can you no longer make a screenshot using "cat /dev/fb0 > > file".
ironically, that's one method we've documented for Blackfin platforms :) http://docs.blackfin.uclinux.org/doku.php?id=uclinux-dist:framebuffer -mike
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