Crash when using pen pressure

I think it's a bug...
#1

When using the ‘Brush scale’ checkbox in the Pen tab. After drawing for a minute it reliably crashes every time.

I cant attach the bug report here but I can email.

date/time : 2023-10-20, 15:26:03, 126ms
computer name : NOODLES
user name : jason
operating system : Windows 10 x64 build 22621
system language : English
system up time : 1 day 4 hours
program up time : 1 minute 8 seconds
processors : 32x 13th Gen Intel(R) Core™ i9-13900HX
physical memory : 15385/32508 MB (free/total)
free disk space : (C:) 765.55 GB
display mode : 2560x1440, 32 bit
process id : $4848
allocated memory : 165.23 MB
largest free block : 128847.06 GB
executable : pmotion.exe
exec. date/time : 2023-10-01 18:27
version : 8.0.5.0
compiled with : Delphi 11
madExcept version : 5.1.2
contact name : Jason
callstack crc : $4de7fcf5, $7d9534a9, $7d9534a9
exception number : 1
exception class : EInvalidOp
exception message : Invalid floating point operation.

main thread ($7940):
7ffb5171 +06c KERNELBASE.dll RaiseException
7ffb51c0 +08f ucrtbase.dll sqrt
7ffb2162 +1ab Ninput.dll DefaultInputHandler
7ffb51ed +086 USER32.dll CallWindowProcW
0104c7ac +10c pmotion.exe Vcl.Controls 10624 +30 TWinControl.DefaultHandler
00d90300 +050 pmotion.exe System 18825 +13 TObject.Dispatch
010451cd +36d pmotion.exe Vcl.Controls 7548 +91 TControl.WndProc
0104c63b +97b pmotion.exe Vcl.Controls 10583 +170 TWinControl.WndProc
0104b7da +02a pmotion.exe Vcl.Controls 10271 +3 TWinControl.MainWndProc
00f6d163 +023 pmotion.exe System.Classes 18392 +8 StdWndProc
7ffb51ed +1fc USER32.dll DispatchMessageW
0119154e +12e pmotion.exe Vcl.Forms 11336 +23 TApplication.ProcessMessage
011915c3 +013 pmotion.exe Vcl.Forms 11366 +1 TApplication.HandleMessage
01191a1a +0ea pmotion.exe Vcl.Forms 11505 +27 TApplication.Run
01a30ec3 +1e3 pmotion.exe Pmotion 1151 +61 initialization
7ffb53d0 +018 KERNEL32.DLL BaseThreadInitThunk
7ffb541a +022 ntdll.dll RtlUserThreadStart

thread $9e38:
7ffb53d0 +18 KERNEL32.DLL BaseThreadInitThunk
7ffb541a +22 ntdll.dll RtlUserThreadStart

thread $4d20:
7ffb53d0 +18 KERNEL32.DLL BaseThreadInitThunk
7ffb541a +22 ntdll.dll RtlUserThreadStart

thread $90f8:
7ffb53d0 +18 KERNEL32.DLL BaseThreadInitThunk
7ffb541a +22 ntdll.dll RtlUserThreadStart

thread $60b4:
7ffb516e +87 KERNELBASE.dll WaitForSingleObjectEx
7ffb53d0 +18 KERNEL32.DLL BaseThreadInitThunk
7ffb541a +22 ntdll.dll RtlUserThreadStart

thread $78d4:
7ffb516d +4c KERNELBASE.dll GetQueuedCompletionStatus
7ffb53d0 +18 KERNEL32.DLL BaseThreadInitThunk
7ffb541a +22 ntdll.dll RtlUserThreadStart

thread $39ec:
7ffb541b +136 ntdll.dll RtlSleepConditionVariableSRW
7ffb5172 +022 KERNELBASE.dll SleepConditionVariableSRW
7ffb53d0 +018 KERNEL32.DLL BaseThreadInitThunk
7ffb541a +022 ntdll.dll RtlUserThreadStart

#2

Thanks for the report. It looks as if the crash appears outside of the actual program executable. I can’t even see any of “my code” in the stack trace. The code that I can see is part of the dev system I use and Windows modules.
But still the problem can occur because “my code” did something wrong before the actual error occurs.

Is this a new problem that did not happen before 8.0.5?
Does it only happen with brush scale option and not with others?
May I send you special debug build? If so then please write to jan@cosmigo.com and refer to this post. Otherwise I don’t have a starting point for further analysis.

#3

Thanks Jan, the error is a combination of the Xencelabs tablet and Pro motion. When I switch to using the Wacom hardware / drivers it works great.