On Tue, May 12, 2020 at 04:06:17PM -0600, Alex Averill wrote: > Hello, > I am currently working on building an application using XInput 2 and > RawTouch events to capture touch positions and pass them to another > application. I am using a 3M Touchscreen that is reporting through X11 that > it supports 80 points, however I am only ever able to capture at most 32 > touchpoints.
32 sounds suspiciously like a mask somewhere but I couldn't find anything skimming over the relevant bits.. Are you getting 32 slots from the device though? libinput record will tell you, look at the ABS_MT_SLOT value and inside that the ABS_MT_TRACKING_ID. Any slot with a tracking ID != -1 has a current touch, check how many you can produce. libinput record output is YAML and easy enough to parse. Cheers, Peter > Is there an inherent limit to the total number of > touchpoints/RawTouchEvents supported by XInput 2? > > Thanks, > Alex Averill > _______________________________________________ > xorg@lists.x.org: X.Org support > Archives: http://lists.freedesktop.org/archives/xorg > Info: https://lists.x.org/mailman/listinfo/xorg > Your subscription address: %(user_address)s _______________________________________________ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: https://lists.x.org/mailman/listinfo/xorg Your subscription address: %(user_address)s
