Wacom tablet input doesn't work in "mouse mode" in 2.92.0 Alpha (Nov 25th build) #83041

New Issue

Jeroen Backx · 2020-11-26T10:03:05+01:00

Jeroen Backx commented

2020-11-26 10:03:05 +01:00

System Information
Operating system: Windows 10
Graphics card: Geforce 2070

Blender Version
Broken: 2.92 Alpha e09d0c0d07
Worked: 2.91

Short description of error
Using my Wacom tablet in "mouse mode" in Blender 2.92.0 Alpha seems to scale the input. It is difficult to explain but the video below demonstrates the issue.

This happens on a fresh system startup and only in Blender (no other software). It also doesn't matter whether I had it set to mouse-mode before or during Blender being active.

I had posted this video previously on a different ticket but I had not gotten a response then so I am trying again as this bug is not yet resolved. Thank you!

Exact steps for others to reproduce the error
See video below...
pen mouse mode input scaling issue.mp4

**System Information** Operating system: Windows 10 Graphics card: Geforce 2070 **Blender Version** Broken: 2.92 Alpha e09d0c0d077c Worked: 2.91 **Short description of error** Using my Wacom tablet in "mouse mode" in Blender 2.92.0 Alpha seems to scale the input. It is difficult to explain but the video below demonstrates the issue. This happens on a fresh system startup and only in Blender (no other software). It also doesn't matter whether I had it set to mouse-mode before or during Blender being active. I had posted this video previously on a different ticket but I had not gotten a response then so I am trying again as this bug is not yet resolved. Thank you! **Exact steps for others to reproduce the error** See video below... [pen mouse mode input scaling issue.mp4](https://archive.blender.org/developer/F9337488/pen_mouse_mode_input_scaling_issue.mp4)

Jeroen Backx commented

2020-11-26 10:03:05 +01:00

Added subscriber: @Grimreth

blender-admin commented

2020-11-26 10:03:05 +01:00

#84124 was marked as duplicate of this issue

Robert Guetzkow commented

2020-11-26 10:15:31 +01:00

Closed as duplicate of #82775

Robert Guetzkow closed this issue

2020-11-26 10:15:31 +01:00

Robert Guetzkow commented

2020-11-26 10:16:45 +01:00

Added subscriber: @rjg

Robert Guetzkow commented

2020-11-26 10:16:46 +01:00

This comment was removed by @rjg

*This comment was removed by @rjg*

Robert Guetzkow commented

2020-11-26 10:20:18 +01:00

Changed status from 'Duplicate' to: 'Needs Triage'

Robert Guetzkow reopened this issue

2020-11-26 10:20:18 +01:00

Robert Guetzkow commented

2020-11-26 10:20:58 +01:00

I'm re-opening the ticket as the issue is not the same, it has only has been discussed in the other ticket.

Robert Guetzkow commented

2020-11-26 10:21:47 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Robert Guetzkow commented

2020-11-26 10:21:47 +01:00

I can confirm the issue. Mouse mode causes an offset in the input. @PrototypeNM1

Robert Guetzkow commented

2020-11-26 10:23:11 +01:00

Added subscriber: @PrototypeNM1

Nicholas Rishel self-assigned this 2020-11-27 03:47:27 +01:00

Jeroen Backx commented

2020-12-10 09:53:21 +01:00

Is there any progress on this issue? I am still unable to use my tablet in mouse mode in the latest builds of 2.92.

Thank you!

Is there any progress on this issue? I am still unable to use my tablet in mouse mode in the latest builds of 2.92. Thank you!

Nicholas Rishel commented

2020-12-25 07:35:57 +01:00

What's happening here is that Wintab is reporting absolute coordinates to Blender, but moving the mouse as though it was a relative mouse.

I spent a bit of time today trying to find a way to have Wintab inform when the system cursor is in mouse mode, but the APIs that seemed promising didn't actually work (or I don't know how to make them work).

On review GIMP, Krita, and MyPaint and found they all had the same problem (all use Wintab xy position directly, which Blender does too in 2.92).

All this is to say I'm not entirely sure the best way to proceed here. The changes in 2.92 are the only way to get high frequency tablet events for Wintab, and maintaining two versions of Wintab handling isn't a pleasant thought. I can force Wintab to handle the system cursor in absolute coordinates while Blender is active, effectively disabling mouse mode Wintab in Blender, but that's not a great solution either.

I'll have to think/research this a bit more.

What's happening here is that Wintab is reporting absolute coordinates to Blender, but moving the mouse as though it was a relative mouse. I spent a bit of time today trying to find a way to have Wintab inform when the system cursor is in mouse mode, but the APIs that seemed promising didn't actually work (or I don't know how to make them work). On review GIMP, Krita, and MyPaint and found they all had the same problem (all use Wintab xy position directly, which Blender does too in 2.92). All this is to say I'm not entirely sure the best way to proceed here. The changes in 2.92 are the only way to get high frequency tablet events for Wintab, and maintaining two versions of Wintab handling isn't a pleasant thought. I can force Wintab to handle the system cursor in absolute coordinates while Blender is active, effectively disabling mouse mode Wintab in Blender, but that's not a great solution either. I'll have to think/research this a bit more.

Nicholas Rishel commented

2020-12-25 21:20:08 +01:00

Added subscriber: @shaqualeek

Nicholas Rishel commented

2020-12-27 05:58:01 +01:00

Quick update, I learned that relative input setup in Wintab API is not the same as mouse mode set in the driver preferences. Relative input modifies input reporting to offsets instead of absolute points. Mouse mode in the driver preferences does mousy things, like mouse acceleration. These two things looks similar but are incompatible.

Jeroen Backx commented

2021-01-09 11:52:12 +01:00

@PrototypeNM1 Thank you very for your continued efforts in resolving the issue and your detailed feedback. I regularly check new builds and the issue still persists.

You didn't ask for it but I created another console log based on the latest build here: https:*blender.community/c/graphicall/Wlbbbc/
The log is here: https://developer.blender.org/P1875

I noticed you also asked other users to check Gimp for similar issues. I also did this and did not notice any issues there. I currently only experience the mouse-mode offset/scaling issue in blender.

I really hope this can be resolved as I depend on mouse-mode to comfortably work on multi-monitor setups. If there is anything I can do to help to resolve this issue please let me know.
Thank you again.

@PrototypeNM1 Thank you very for your continued efforts in resolving the issue and your detailed feedback. I regularly check new builds and the issue still persists. You didn't ask for it but I created another console log based on the latest build here: [https:*blender.community/c/graphicall/Wlbbbc/ ](https:*blender.community/c/graphicall/Wlbbbc/) The log is here: https://developer.blender.org/P1875 I noticed you also asked other users to check Gimp for similar issues. I also did this and did not notice any issues there. I currently *only* experience the mouse-mode offset/scaling issue in blender. I really hope this can be resolved as I depend on mouse-mode to comfortably work on multi-monitor setups. If there is anything I can do to help to resolve this issue please let me know. Thank you again.

Nicholas Rishel commented

2021-01-09 23:19:57 +01:00

@Grimreth could you verify that pressure is working correctly with a mouse mode tablet in GIMP?

Jeroen Backx commented

2021-01-10 13:44:55 +01:00

Thanks for getting back... As you probably suspected, I had not properly configured my input devices in GIMP. As a result everything seemed fine initially but upon re-evaluation it became clear that I did not have pressure sensitivity. Once I did properly configure my input devices in GIMP I encountered similar scaling/offset issues as Blender 2.92 onward.

I then became curious to see whether I would experience similar issues in Photoshop so I went and checked. As it turns out, yes, Photoshop 2020 and 2021 both demonstrate similar issues with scaling/offset in mouse mode. Other software such as Marmoset also experiences the issue. This of course indicates that it is an issue outside of blender.

It seems any interaction with any canvas or 3d viewport in Mouse-mode gets scaled/offset, whereas regular Windows UI has no issues. The only other place where I do not experience issues is Blender 2.91 and prior. This also was the cause of my assumption that it had something to do with Blender in the first place. Sorry about that, my mistake.

I updated once more to the latest Wacom drivers but that doesn't seem to help any. I will create a ticket over at the Wacom website as well, I hope someone over there will have some answers.

I am just left wondering why older Blender versions do not have this issue, do you have any idea?

Thanks for getting back... As you probably suspected, I had not properly configured my input devices in GIMP. As a result everything seemed fine initially but upon re-evaluation it became clear that I did not have pressure sensitivity. Once I did properly configure my input devices in GIMP I encountered similar scaling/offset issues as Blender 2.92 onward. I then became curious to see whether I would experience similar issues in Photoshop so I went and checked. As it turns out, yes, Photoshop 2020 and 2021 both demonstrate similar issues with scaling/offset in mouse mode. Other software such as Marmoset also experiences the issue. This of course indicates that it is an issue outside of blender. It seems any interaction with any canvas or 3d viewport in Mouse-mode gets scaled/offset, whereas regular Windows UI has no issues. The only other place where I do not experience issues is Blender 2.91 and prior. This also was the cause of my assumption that it had something to do with Blender in the first place. Sorry about that, my mistake. I updated once more to the latest Wacom drivers but that doesn't seem to help any. I will create a ticket over at the Wacom website as well, I hope someone over there will have some answers. I am just left wondering why older Blender versions do not have this issue, do you have any idea?

Nicholas Rishel commented

2021-01-10 20:51:39 +01:00

Older versions of Blender don't use the position reported by Wintab. It instead used Window's mouse position and the most recent Wintab pressure and tilt. This Frankenstein tablet input worked some of the time, but there were issues where the two would desync especially at either end of a line.

With high frequency mouse and tablet input these issues would have been more pronounced.

Older versions of Blender don't use the position reported by Wintab. It instead used Window's mouse position and the most recent Wintab pressure and tilt. This Frankenstein tablet input worked some of the time, but there were issues where the two would desync especially at either end of a line. With high frequency mouse and tablet input these issues would have been more pronounced.

Jeroen Backx commented

2021-01-10 22:08:49 +01:00

I understand. It's unfortunate that a fix for one thing exposes another issue but I suppose my use case is a small minority. I'll see if I can find help through Wacom as the issue really resides outside Blender. Thank you very much for your explanation and all your work.

Nicholas Rishel commented

2021-02-16 16:43:39 +01:00

This should be resolved by 2e81f2c01a, if the issue is still present after tonight's daily build please let me know and I'll reopen the issue. If the daily build is earlier than Feb 17, the above change has not yet taken effect.

This should be resolved by 2e81f2c01a, if the issue is still present after tonight's daily build please let me know and I'll reopen the issue. If the daily build is earlier than Feb 17, the above change has not yet taken effect.

Nicholas Rishel commented

2021-02-16 16:43:46 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Nicholas Rishel closed this issue

2021-02-16 16:43:46 +01:00

Jeroen Backx commented

2021-02-17 10:04:48 +01:00

I can confirm it works perfectly on the latest build! Thank you so very very much. You really saved my way of working in Blender, even though the issue really came from outside of it. Fantastic job!

Nicholas Rishel commented

2021-02-17 16:59:43 +01:00

Heads up that mouse mode may lack pressure support in 2.93 and later, but there won't be any issues with the cursor being offset as before.

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Wacom tablet input doesn't work in "mouse mode" in 2.92.0 Alpha (Nov 25th build) #83041