Re: Portrait Mode in X

> I don't believe they have hardware rotation support like the silicon
motion
> driver does.  However, you could use the 3D hardware to perform the
> rotation by creating two frame buffers in the card and using the hardware
> to rotate one into the other.  I've been tempted to try this, but haven't
> any compelling reason to do so yet.  You'd still have to rotate the Xv
> images on the way to the frame buffer, but that won't be a performance
> problem.

This sounds interesting - is this a big job?  If this was implemented in the
X server,
I imagine that it may be of use to others who wish to use similar hardware.
I might
be interested in giving this a try, but I would need some pointers as to
where to start,
as I've never worked on any X server type code before.  I've done some
tinkering
with drivers, but in a very limited fashion...

> The tablet I've seen uses the silicon motion chipset which does the
> rotation during video output, making things much easier.
>
> Keith Packard        XFree86 Core Team        HP Cambridge Research Lab
>
Thanks

Mark