I use kmsgrab with wayland, but swcursor does not work so well with this combination.
Using gnome 3.38.2 with gtk-3.24.24 on Fedora 33.
(swcursor:963185): Gdk-WARNING **: 15:27:32.717: gdkwindow-x11.c:5650 drawable is not a native X11 window
Thread 1 "swcursor" received signal SIGSEGV, Segmentation fault.
0x00007ffff7e1f5ad in require_socket.part.0.lto_priv.0 (dpy=0x55555557f810) at xcb_io.c:66
66 if(dpy->xcb->event_owner != XlibOwnsEventQueue)
(gdb) bt
#0 0x00007ffff7e1f5ad in require_socket.part.0.lto_priv.0 (dpy=0x55555557f810) at xcb_io.c:66
#1 0x00007ffff7e223fd in require_socket (dpy=0x55555557f810) at xcb_io.c:579
#2 _XFlush (dpy=0x55555557f810) at xcb_io.c:576
#3 0x00007ffff7e2264d in _XGetRequest (dpy=0x55555557f810, type=<optimized out>, len=8) at XlibInt.c:1764
#4 0x00007ffff7e15f0f in XQueryExtension
(dpy=0x55555557f810, name=0x7ffff7dd00e9 "SHAPE", major_opcode=0x7fffffffb754, first_event=0x7fffffffb758, first_error=0x7fffffffb75c) at QuExt.c:44
#5 0x00007ffff7e09e87 in XInitExtension (dpy=dpy@entry=0x55555557f810, name=name@entry=0x7ffff7dd00e9 "SHAPE") at InitExt.c:47
#6 0x00007ffff7dc758d in XextAddDisplay
(extinfo=0x7ffff7dd5550 <_shape_info_data>, dpy=dpy@entry=0x55555557f810, ext_name=ext_name@entry=0x7ffff7dd00e9 "SHAPE", hooks=hooks@entry=
0x7ffff7dd5200 <shape_extension_hooks>, nevents=nevents@entry=1, data=data@entry=0x0) at extutil.c:110
#7 0x00007ffff7dc7ee0 in find_display (dpy=0x55555557f810) at XShape.c:73
#8 0x00007ffff7dcb92c in XShapeCombineRegion (dpy=0x55555557f810, dest=0, destKind=2, xOff=0, yOff=0, r=0x55555558e3d0, op=0) at XShape.c:195
#9 0x0000555555557514 in swcursor_window_map (widget=0x5555558583b0) at swcursor-window.c:143
#10 0x00007ffff7061080 in _g_closure_invoke_va
(param_types=0x0, n_params=<optimized out>, args=0x7fffffffba30, instance=0x5555558583b0, return_value=0x0, closure=0x5555555c3b90)
at ../gobject/gclosure.c:873
#11 g_signal_emit_valist (instance=0x5555558583b0, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7fffffffba30) at ../gobject/gsignal.c:3403
#12 0x00007ffff70611a3 in g_signal_emit (instance=instance@entry=0x5555558583b0, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3550
#13 0x00007ffff79b9dd8 in gtk_widget_map (widget=0x5555558583b0) at gtkwidget.c:5047
#14 0x00007ffff79d96df in gtk_window_show (widget=0x5555558583b0) at gtkwindow.c:6185
#15 0x00007ffff7043e2a in g_closure_invoke
(closure=0x5555555c3db0, return_value=0x0, n_param_values=1, param_values=0x7fffffffbce0, invocation_hint=0x7fffffffbc60) at ../gobject/gclosure.c:810
#16 0x00007ffff706cf0a in signal_emit_unlocked_R.isra.0
(node=node@entry=0x5555555eb010, detail=detail@entry=0, instance=instance@entry=0x5555558583b0, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffffffbce0) at ../gobject/gsignal.c:3668
#17 0x00007ffff7060f82 in g_signal_emit_valist
(instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fffffffbe90) at ../gobject/gsignal.c:3494
#18 0x00007ffff70611a3 in g_signal_emit (instance=instance@entry=0x5555558583b0, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3550
#19 0x00007ffff79ba476 in gtk_widget_show (widget=0x5555558583b0) at gtkwidget.c:4848
#20 0x0000555555556ac5 in show_main_window (image=0x5555555e8820) at swcursor.c:56
#21 0x0000555555556978 in main (argc=1, argv=0x7fffffffc0d8) at swcursor.c:29
I use kmsgrab with wayland, but swcursor does not work so well with this combination.
Using gnome 3.38.2 with gtk-3.24.24 on Fedora 33.