Re: [Linux-fbdev-devel] Re: rotation.

[John B. <jo...@gr...>]

> > > > I'm about to implement rotation which is needed for devices
> > > > like the ipaq.
> > > > The question is do we flip the xres and yres values depending
> > > > on the rotation or do we just alter the data that will be
> > > > drawn to make the screen appear to rotate. How does hardware
> > > > rotate view the x and y axis?  Are they rotated or does just
> > > > the data get rotated?
> > > 
> > > Where are you going to implement the rotation? At the fbcon or
> > > fbdev level? 
> > > 
> > > Fbcon has the advantage that it'll work for all frame buffer
> > > devices.
> > 
> > But you could also provide driver hooks for the chips which have
> > such a rotation feature included (don't know if such exist, but i
> > suppose they do, or may in the future).

It would be nice to have an option to be able to do the rotation
entirely in software - some desktop users might prefer to have a
portait-orientated display, when their graphics card doesn't have any
hardware rotation facilities at all.

John.