Touch input in retroarch

[dapetcu21]

Retroarch (or X11 for that matter, I guess?) sees the touchscreen as a mouse. Using it as a mouse in retroarch’s interface feels bad. I noticed there’s a “touch input” option in retroarch, but it doesn’t work.

Getting this to work would be a cool quality of life improvement. I’d try to muck around with X11 configs, but Lakka’s file system is read-only.

[natinusala]

You can override the xorg config by copying it in /storage/.config/xorg.conf and editing it there.

I agree that having RA see the touch screen as a pointer instead of as a mouse cursor would be better. The menu is not going to be usable (XMB only reacts to mouse input), but cores are going to be better.

Do we care to lose mouse input for the menu? No because mouse input on XMB is bad anyway

[dapetcu21]

I just realised: There is still a need for mouse input in XMB: The on-screen keyboard (for typing wifi passwords and search queries).

[natinusala]

Right, I forgot about that

[dapetcu21]

I tested with xinput test-xi2 and apparently the touchscreen works correctly as far as X11 is concerned (or, at least, it sends touch events). It also works if I set the following in retroarch.cfg (these options are also available through XMB):

menu_mouse_enable = "false"
menu_pointer_enable = "true"

BUT! There's a weird bug where you have to touch twice for the touch to register. The first touch is like a touch down and the second one, if done in the exact same spot registers as a touch up. The same thing happens in both XMB and glui.

[natinusala]

Hmm, does it come from RetroArch?

[dapetcu21]

I don't know. I haven't tried running other software that uses the touch screen.