On Tue, 17 Oct 2000, Antti Silvast wrote:
> > > Oh yes. Can you pull this off even when the iPAQ is running in X?
> > There may be some problems accessing the framebuffer directly through
> > fbdev while the X server is running. Perhaps someone with better knowledge
> > on fbdev and XFree86 internals could confirm this?
>
> And if there are problems, can the X be disabled or something on those
> lines?
Well, you can always shut down the X server (or not even start it when the
machine boots).
Actually, there is also another way of doing direct rendering in Linux.
XFree86 supports an X server extension called DGA which provides very
similar operations to fbdev including direct framebuffer access. Since DGA
is provided by the X server, the X server and the direct rendering
application can share access to the framebuffer in a coordinated way.
However, I am not sure whether the stripped down X server used in iPAQ
includes DGA support. Note also that XFree86 4.0 uses DGA 2.0, which is
different from DGA 1.x used in earlier versions of XFree86.
For further information about DGA, see
ftp://ftp.xfree86.org/pub/XFree86/4.0.1/doc/README.DGA
-Tero
Received on Tue Oct 17 14:53:38 2000
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