Hi! > Hi Pavel, > I love discussions with you :) Unfortunately I can't say the same. > > Am 19.02.2017 um 18:15 schrieb Pavel Machek <pavel@xxxxxx>: > > > > > >>> Solve it properly. That means passing calibration > >>> data from kernel to userland. > >> > >> As written before, the really proper solution would be to provide floating > >> or fixed point subpixel input events. Not arbitrarily scaling up in kernel > >> and leaving downscaling to user space (where everybody can make it > >> worse). > > > > That has no advantages, > > It has the advantage of providing you with the full precision of raw data (but > properly scaled) so that you don't loose any bit of information. This is what > you just asked for - one or two mails before. Not really, right? No matter what kind of fixed point you introduce, you'll still loose precision. > > and floating point in kernel is hard. Also > > you'd either have to invent new interface, or you'd break touchscreen > > for people that already have their touchscreens calibrated. > > No, I don't break calibration for people using a different chip. So you propose your touchscreen to behave differently from all other touchscreens in tree? That's just no-go. > > Yes, that's not really proper solution, that just overengineered. Not > > worth implementing. Pass calibration data to userland. > > You seem to repeat yourself and just say which solution you prefer, > but I am missing the arguments why your solution (Pass calibration data > to userland) is right and the best one. > Which problems does it solve? All you described. > Which one does it solve better than others? It is not terminally ugly. > How can you implement it in > a stable and portable way? Easily. > How can you make sure that all user-space GUI > systems can and will make use of this calibration data? You can't, and you don't need to. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
Attachment:
signature.asc
Description: Digital signature
