Add folly

[Eeems]

More information on loading other games here: https://github.com/bkirwi/folly#running-on-remarkable

[Eeems]

@rmitchellscott another rM1/rM2 only application until I can get it building with a newer image. As such, still can't test it myself.

[rmitchellscott]

I'll test on my rm2 once it's built!

[rmitchellscott]

Opened, drew a blank page with a 1 on the bottom for a second, then crashed:

23:14:32.906 qml                      Application starting on device with original aspect ratio (75). Real aspect ratio of the application is going to be original (launchWindow qrc:/appload/qml/appload.qml:78)
23:14:32.908 default                  [QTFB]: Re-register framebuffer  -1 as 8990518
[QTFB]: Unregistered framebuffer controller ID: -1
[QTFB]: Registered framebuffer controller ID: 8990518
23:14:32.909 default                  [AppLoad]: Starting external binary "./folly"
23:14:32.927 default                  [QTFB]: FB Repaint triggered for  8990518 . Status:  false
[QTFB]: Awaiting incoming connections to/tmp/qtfb.sock
[QTFB]: Connection established from client. Sock FD is 4
[QTFB]: Client is connecting in 0 mode. Resolution is set to 1404x1872
[QTFB]: Defined SHM (5256576 bytes) at 0x5d1e8000
[QTFB]: Associated connection <==> framebuffer 8990518
23:14:33.172 default                  [QTFB]: FB Repaint triggered for  8990518 . Status:  true
refresh-region Region { top_left: Point2 [0, 0], bottom_right: Point2 [1404, 1872] }

thread 'main' (6098) panicked at /root/.cargo/git/checkouts/libremarkable-7aac9d61cf98f227/573d4ac/src/input/scan.rs:114:42:
Failed to find the gpio evdev!
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
23:14:33.489 default                  [AppLoad]: Process for "./folly" finished with exit code 101 and status QProcess::NormalExit
[QTFB]: Unregistered framebuffer controller ID: 8990518
[QTFB]: Could not find the framebuffer to act upon.
[QTFB]: Could not find the framebuffer to act upon.
[QTFB]: Could not find the framebuffer to act upon.
[QTFB]: The client requested closing the connection.
[QTFB]: Closing client socket 4

[Eeems]

Failed to find the gpio evdev!

Hmm, I wonder if rm-appload is missing handling the gpio evdev. Could you try changing the external manifest to set QTFB_SHIM_INPUT_MODE to RM2 or NATIVE instead? I guess I could also try to update the version of libremarkable that folly is using.

[rmitchellscott]

Either of those let the full page paint, I assume I should be able to touch Bronze or the tutorial to launch them. Touch doesn't seem to do anything though.

Pen draws on the screen, though it's a lot of latency.

15:06:15.738 qml                      Application starting on device with original aspect ratio (75). Real aspect ratio of the application is going to be original (launchWindow qrc:/appload/qml/appload.qml:78)
15:06:15.741 default                  [QTFB]: Re-register framebuffer  -1 as 9658919
[QTFB]: Unregistered framebuffer controller ID: -1
[QTFB]: Registered framebuffer controller ID: 9658919
15:06:15.742 default                  [AppLoad]: Starting external binary "./folly"
15:06:15.763 default                  [QTFB]: FB Repaint triggered for  9658919 . Status:  false
[QTFB]: Awaiting incoming connections to/tmp/qtfb.sock
[QTFB]: Connection established from client. Sock FD is 4
[QTFB]: Client is connecting in 0 mode. Resolution is set to 1404x1872
[QTFB]: Defined SHM (5256576 bytes) at 0x5dcde000
[QTFB]: Associated connection <==> framebuffer 9658919
15:06:16.019 default                  [QTFB]: FB Repaint triggered for  9658919 . Status:  true
refresh-region Region { top_left: Point2 [0, 0], bottom_right: Point2 [1404, 1872] }
[QTFB]: Updated region 0 0 1404 1872 of framebuffer 9658919
15:06:17.910 default                  [QTFB]: FB Repaint triggered for  9658919 . Status:  true
[QTFB]: Updated region 0 0 1404 1872 of framebuffer 9658919
15:06:18.103 default                  [QTFB]: FB Repaint triggered for  9658919 . Status:  true

thread '<unnamed>' (6831) panicked at /root/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/evdev-0.11.3/src/device_state.rs:114:22:
got a key event despite not supporting keys
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[Eeems]

Pen drawing latency is also something I encountered in the oxide compositor. The amount of events it sends can be quite taxing on the system.

[Eeems]

@rmitchellscott what's the current settings with the testing version of appload perform like?

[rmitchellscott]

Crashes:

22:21:35.285 qml                      Application starting on device with original aspect ratio (75). Real aspect ratio of the application is going to be original (launchWindow qrc:/appload/qml/appload.qml:78)
22:21:35.287 default                  [QTFB]: Re-register framebuffer  -1 as 9627569
[QTFB]: Unregistered framebuffer controller ID: -1
[QTFB]: Registered framebuffer controller ID: 9627569
22:21:35.288 default                  [AppLoad]: Starting external binary "./folly"
22:21:35.311 default                  [QTFB]: FB Repaint triggered for  9627569 . Status:  false
[QTFB]: Awaiting incoming connections to/tmp/qtfb.sock
[QTFB]: Connection established from client. Sock FD is 4
[QTFB]: Client is connecting in 0 mode. Resolution is set to 1404x1872
[QTFB]: Defined SHM (5256576 bytes) at 0x5ed00000
Invoked image constructor for address 0x717482b0, w = 1404, h = 1872, bpl = 2808, f = 7
[QTFB]: Associated connection <==> framebuffer 9627569
22:21:35.568 default                  [QTFB]: FB Repaint triggered for  9627569 . Status:  true
[2026-05-21 16:21:35.623] [csl] [error] failed to fetch DelayInhibited: ETIMEDOUT Connection timed out
refresh-region Region { top_left: Point2 [0, 0], bottom_right: Point2 [1404, 1872] }

thread 'main' (905) panicked at /root/.cargo/git/checkouts/libremarkable-7aac9d61cf98f227/573d4ac/src/input/scan.rs:114:42:
Failed to find the gpio evdev!
stack backtrace:
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
22:21:35.938 default                  [AppLoad]: Process for "./folly" finished with exit code 101 and status QProcess::NormalExit
[QTFB]: Unregistered framebuffer controller ID: 9627569
[QTFB]: Could not find the framebuffer to act upon.
[QTFB]: Could not find the framebuffer to act upon.
[QTFB]: The client requested closing the connection.
[QTFB]: Closing client socket 4

[Eeems]

I guess maybe it needs to emulate RM2? Does it still crash with QTFB_SHIM_MODEL set to RM2? Or are we back to touch not working?

[rmitchellscott]

Crash with a different error:

22:50:02.115 qml                      Application starting on device with original aspect ratio (75). Real aspect ratio of the application is going to be original (launchWindow qrc:/appload/qml/appload.qml:78)
22:50:02.117 default                  [QTFB]: Re-register framebuffer  -1 as 8892275
[QTFB]: Unregistered framebuffer controller ID: -1
[QTFB]: Registered framebuffer controller ID: 8892275
22:50:02.118 default                  [AppLoad]: Starting external binary "./folly"
22:50:02.137 default                  [QTFB]: FB Repaint triggered for  8892275 . Status:  false
[QTFB]: Awaiting incoming connections to/tmp/qtfb.sock
[QTFB]: Connection established from client. Sock FD is 9
[QTFB]: Client is connecting in 0 mode. Resolution is set to 1404x1872
[QTFB]: Defined SHM (5256576 bytes) at 0x5ed5d000
Invoked image constructor for address 0x71b22810, w = 1404, h = 1872, bpl = 2808, f = 7
[QTFB]: Associated connection <==> framebuffer 8892275

thread 'main' (932) panicked at /root/.cargo/git/checkouts/libremarkable-7aac9d61cf98f227/573d4ac/src/framebuffer/core.rs:128:18:
Failed to open swtfb shared buffer: Os { code: 2, kind: NotFound, message: "No such file or directory" }
stack backtrace:
22:50:02.407 default                  [QTFB]: FB Repaint triggered for  8892275 . Status:  true
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
22:50:02.683 default                  [AppLoad]: Process for "./folly" finished with exit code 101 and status QProcess::NormalExit
[QTFB]: Unregistered framebuffer controller ID: 8892275
[QTFB]: The client requested closing the connection.
[QTFB]: Closing client socket 9

[Eeems]

Ah right, it's trying to use rm2fb directly on the RM2. You might be able to get it to work with LIBREMARKABLE_FB_DISFAVOR_INTERNAL_RM2FB=1, but I don't think it's using a recent enough version of libremarkable. We might be able to update it as part of the build though.