[PATCH weston 0/5] fix fbdev transforms

[Pekka Paalanen]

On Wed, 18 Mar 2015 11:45:01 +0100
Thilo Cestonaro <thilo at cestona.ro> wrote:

> Hey!
> 
> 
> > Is it broken only on fbdev or DRM also?
> 
> DRM is the same as Fbdev. The touch doesn't have the correct 
> orientation, but I can use weston-simple-touch to have a windows paint 
> simulation with just one brush and color :)
> 
> 
> > Can you try to use weston-simple-touch to see if the touch input is
> > just missing the rotation of the rotated screen?
> 
> Jup, touch is missing the correct orientation. with weston-simple-touch 
> I see red dots everywhere but not there, where I touch :).
> 
> 
> > If you don't rotate the screen, is touch working ok then?
> 
> Jup, without rotation it is working correctly.

Ok, so it's just a missing output transformation with the touchscreen
setup.

Peter, is one supposed to account for screen rotation already in the
touchscreen calibration, or should the compositor combine the
calibration with the current output rotation/flip? I mean, how would
this translate into libinput API usage and the touchscreen calibration
matrix from... udev?

I assume we should do the latter in case some compositor can change the
rotation at runtime (tablets etc.).


Thanks,
pq