X11 has support for multiple mice, configurable by users, and udev has permission issues on some linux distros, this seems like a better solution in those cases
Expected behavior
Retroarch is able to use/track multiple mice in x11.
Actual behavior
Retroarch only follows one mouse. For example in the opera core, both blue/red cursors follow the first mouse.
Steps for creating multiple mice under linux x11
hook up a second mouse/touchpad to a linux/x11 computer.
use xinput create-master mouse2 to create a second virtual mouse called mouse2.
use xinput to display ids, and attach second mouse id to mouse2 id via xinput reattach 9 18 replacing 9 with second mouse id and 18 with mouse2 virtual mouse id.
Notes for retroarch changes to the x11 input driver to support reading a second mouse
Basically retroarch would use XIQueryPointer instead of XQueryPointer to read a second mouse. I experimentally hacked the code with hard coded ids and it does work but it needs to be figured out how to get the virtual mouse ids, and x11_input.c would needs to add support for storing multiple mouse states to pass on to the core.
I plan to research this further and post more information here, and unless an official dev/contributor takes this on, I will eventually try to create a patch for this.
gouchi
commented
2 months ago
Description
X11 has support for multiple mice, configurable by users, and udev has permission issues on some linux distros, this seems like a better solution in those cases
Expected behavior
Retroarch is able to use/track multiple mice in x11.
Actual behavior
Retroarch only follows one mouse. For example in the opera core, both blue/red cursors follow the first mouse.
Steps for creating multiple mice under linux x11
xinput create-master mouse2to create a second virtual mouse called mouse2.xinputto display ids, and attach second mouse id to mouse2 id viaxinput reattach 9 18replacing 9 with second mouse id and 18 with mouse2 virtual mouse id.Notes for retroarch changes to the x11 input driver to support reading a second mouse
Basically retroarch would use XIQueryPointer instead of XQueryPointer to read a second mouse. I experimentally hacked the code with hard coded ids and it does work but it needs to be figured out how to get the virtual mouse ids, and
x11_input.cwould needs to add support for storing multiple mouse states to pass on to the core.I plan to research this further and post more information here, and unless an official dev/contributor takes this on, I will eventually try to create a patch for this.