Meta: Improve Wintab tablet handling (smooth lines) #88852

New Issue

Nicholas Rishel · 2021-06-05T05:18:17+02:00

Nicholas Rishel commented

2021-06-05 05:18:17 +02:00

This is a meta task, mostly to get feedback from people who reported bugs in the last Wintab rewrite, to resolve remaining issues before merging D11508.

This is a meta task, mostly to get feedback from people who reported bugs in the last Wintab rewrite, to resolve remaining issues before merging [D11508](https://archive.blender.org/developer/D11508).

Nicholas Rishel commented

2021-06-05 05:18:17 +02:00

Added subscriber: @PrototypeNM1

blender-admin commented

2021-06-05 05:18:17 +02:00

This issue was referenced by 6f158f834d

This issue was referenced by 6f158f834dcfa638639391f37afcb2ca8457cb45

Nicholas Rishel self-assigned this 2021-06-05 06:04:29 +02:00

Nicholas Rishel commented

2021-06-05 06:04:29 +02:00

Added subscribers: @Theodet, @Grimreth, @bvgross, @mendezcode, @Harti, @Diogo_Valadares, @kouzanagi, @heini, @cheteron, @Zafio

Nicholas Rishel commented

2021-06-05 06:04:29 +02:00

To all individuals notified: I'm trying to resolve remaining issues from the last attempt to improve Wintab tablet support. You were added to this task because your bug report was not resolved before the changes were reverted in Blender 2.93. Hopefully we can fix anything that remains before merging changes again. :)

Test Build Download (builder.blender.org)

With this build line art should now be clean without jagged edges when using Wintab (default for Wacom-like tablets), and you can change the Tablet API without needing to restart Blender. This build is a third (and hopefully last) attempt to improve Blender's Wintab tablet support.

What I need tested:

Does your tablet (not set to mouse mode) have pressure issues when the Tablet API is set to Automatic or Wintab?
Is pen input ever in the wrong spot (e.g. mouse in one place, line drawn in another).
Any other weird behavior (e.g. mouse becomes unresponsive)?
Any tablet issues that are now fixed?
If you have issues, what tablet do you have (e.g. Wacom Intuos).

Known issues:

Wintab: Mouse mode tablets don't have pressure (temporarily disabled for testing). This is temporarily a measure to indicate Wintab isn't being used for mouse position.

@heini @Harti @Diogo_Valadares @Zafio @Theodet @Zafio @bvgross @mendezcode @kouzanagi @cheteron

@Grimreth could you also test? (just need an avid mouse mode user making sure things look right, temporarily sans pressure).

To all individuals notified: I'm trying to resolve remaining issues from the last attempt to improve Wintab tablet support. You were added to this task because your bug report was not resolved before the changes were reverted in Blender 2.93. Hopefully we can fix anything that remains before merging changes again. :) [Test Build Download (builder.blender.org) ](https://builder.blender.org/download/experimental/blender-3.0.0-alpha+wintab-high-frequency.96e2b1bac3be-windows.amd64-release.zip) With this build line art should now be clean without jagged edges when using Wintab (default for Wacom-like tablets), and you can change the Tablet API without needing to restart Blender. This build is a third (and hopefully last) attempt to improve Blender's Wintab tablet support. What I need tested: 1. Does your tablet (not set to mouse mode) have pressure issues when the Tablet API is set to Automatic or Wintab? 2. Is pen input ever in the wrong spot (e.g. mouse in one place, line drawn in another). 3. Any other weird behavior (e.g. mouse becomes unresponsive)? 4. Any tablet issues that are now fixed? 5. If you have issues, what tablet do you have (e.g. Wacom Intuos). Known issues: * Wintab: Mouse mode tablets don't have pressure (temporarily disabled for testing). This is temporarily a measure to indicate Wintab isn't being used for mouse position. @heini @Harti @Diogo_Valadares @Zafio @Theodet @Zafio @bvgross @mendezcode @kouzanagi @cheteron @Grimreth could you also test? (just need an avid mouse mode user making sure things look right, temporarily sans pressure).

Tomasz Kaye commented

2021-06-05 07:31:02 +02:00

Added subscriber: @info-27

Lillya commented

2021-06-05 14:31:30 +02:00

Added subscriber: @Lillya

CHET commented

2021-06-05 17:02:08 +02:00

Huion Inspiroy H320m
No special problems were noticed

Huion Inspiroy H320m No special problems were noticed ![image.png](https://archive.blender.org/developer/F10159118/image.png)

Diogo Valadares Reis dos Santos commented

2021-06-06 00:22:06 +02:00

In Huion Kamvas 13 it's working flawlessly

Jeroen Backx commented

2021-06-07 11:49:01 +02:00

Using this build mouse mode works as I would expect it to without pressure sensitivity, as you mentioned.

I have also tested pen mode as I use pen mode at home and mouse mode at work (because different amounts of monitors, mouse mode is convenient with a multi-monitor setup).

1 - I do still have an issue with pressure sensitivity in pen mode. It's not a new issue for me but It only works while I have the Wacom tablet settings set to "windows ink", which I would rather avoid in practice because it is terribly inconvenient to work with.

When I disable "Use Windows Ink", pressure sensitivity is gone in Blender.

When I try to set Blender to use "Wintab" in hoping to resolving the issue, blender crashes immediately. It only accepts "automatic" or "windows ink". I would not actually expect this to be resolved through this setting as it didn't solve the problem in previous versions either.

2 - Pen is never in the wrong spot.
3 - Not tested for long enough but no immediate odd behavior.
4 - My previous issue with Mouse Mode output being scaled and offset is still fixed and remains correct.
5 - I use a Wacom Intuos Pro.

Using this build mouse mode works as I would expect it to without pressure sensitivity, as you mentioned. I have also tested pen mode as I use pen mode at home and mouse mode at work (because different amounts of monitors, mouse mode is convenient with a multi-monitor setup). 1 - I do still have an issue with pressure sensitivity in pen mode. It's not a new issue for me but It only works while I have the Wacom tablet settings set to "windows ink", which I would rather avoid in practice because it is terribly inconvenient to work with. ![image.png](https://archive.blender.org/developer/F10160704/image.png) When I disable "Use Windows Ink", pressure sensitivity is gone in Blender. When I try to set Blender to use "Wintab" in hoping to resolving the issue, blender crashes immediately. It only accepts "automatic" or "windows ink". I would not actually expect this to be resolved through this setting as it didn't solve the problem in previous versions either. ![image.png](https://archive.blender.org/developer/F10160707/image.png) 2 - Pen is never in the wrong spot. 3 - Not tested for long enough but no immediate odd behavior. 4 - My previous issue with Mouse Mode output being scaled and offset is still fixed and remains correct. 5 - I use a Wacom Intuos Pro.

Nicholas Rishel commented

2021-06-08 00:25:05 +02:00

@Grimreth could you upload the crash log ?

@Grimreth could you upload the [crash log ](https://docs.blender.org/manual/en/latest/troubleshooting/crash.html#windows)?

Jeroen Backx commented

2021-06-09 11:03:55 +02:00

Apparently it remembered the setting because it now crashes immediately at startup
blender.crash.txt

The following crashlog is from the moment where I changed the setting initially
crashtest.crash.txt

Apparently it remembered the setting because it now crashes immediately at startup [blender.crash.txt](https://archive.blender.org/developer/F10163975/blender.crash.txt) The following crashlog is from the moment where I changed the setting initially [crashtest.crash.txt](https://archive.blender.org/developer/F10163980/crashtest.crash.txt)

Nicholas Rishel commented

2021-06-12 21:00:43 +02:00

@Grimreth I haven't posted a new build but the cause of the crash was fairly clear once I saw the crash log. Expect that fixed in the next revision. Is the lack of pressure in pen mode when you disable Windows Ink in the tablet preferences an issue specific to this build or do you have the same issue in 2.93?

Jeroen Backx commented

2021-06-13 12:25:49 +02:00

@PrototypeNM1 Good to hear, thank you very much!

This did open up a can of worms so I need to get things straightened out because weird things are happening.

My work PC has issues with Windows ink but my home pc doesn't seem to, it works just fine. I'll update my wacom drivers this week everywhere to see if I can get the behavior the same on both pc's.

I did run into another weird weird issue while testing.

For some reason your build has a really strange issue going on where sensitivity is maxed out more often the further to the right of the screen I go, using pen mode.
If the stroke initializes correctly the pressure sensitivity keeps being correct even at the right side of the screen (as indicated by the longer strokes).

This doesn't happen on 2.92, 2.93 or another recent daily 3.0 build (clean installs)

@PrototypeNM1 Good to hear, thank you very much! This did open up a can of worms so I need to get things straightened out because weird things are happening. My work PC has issues with Windows ink but my home pc doesn't seem to, it works just fine. I'll update my wacom drivers this week everywhere to see if I can get the behavior the same on both pc's. I did run into another weird weird issue while testing. For some reason your build has a really strange issue going on where sensitivity is maxed out more often the further to the right of the screen I go, using pen mode. If the stroke initializes correctly the pressure sensitivity keeps being correct even at the right side of the screen (as indicated by the longer strokes). ![image.png](https://archive.blender.org/developer/F10169275/image.png) This doesn't happen on 2.92, 2.93 or another recent daily 3.0 build (clean installs) ![image.png](https://archive.blender.org/developer/F10169273/image.png)

Nicholas Rishel commented

2021-06-14 00:29:00 +02:00

@Grimreth max pressure means Wintab and Windows are disagreeing where the cursor was when the stylus is pressed down. This just indicates there's a scaling error since it's more common the further right you start. This may either be an issue in the scale parameters, or that using integers for scaling may be introducing rounding error. I'll have to add some logging to narrow down between the two.

Jeroen Backx commented

2021-06-15 11:02:02 +02:00

@PrototypeNM1 That makes sense, so I suppose it scales from left to right?

On a more exciting note 😁. I have been able to get everything to work perfectly on my end. I had initially neglected to update my Wacom drivers so I was working with different driver versions on both my work and home pc. They are now both using the latest version and everything functions perfectly on both pc's.

Pen and mouse mode both work as expected. Pressure Sensitivity works as expected (except on mouse-mode of your testbuild, as you pointed out), and I have no scaling or offset errors anymore.

Everything works great now whether I'm in 2.92, 2.93, 3.0 daily or your 3.0 test build. Thank you very much for all your hard work and sorry for my goof, having tested with old and different drivers. Hope I didn't waste too much of your time.

Have a great day!

@PrototypeNM1 That makes sense, so I suppose it scales from left to right? On a more exciting note 😁. I have been able to get everything to work perfectly on my end. I had initially neglected to update my Wacom drivers so I was working with different driver versions on both my work and home pc. They are now both using the latest version and everything functions perfectly on both pc's. Pen and mouse mode both work as expected. Pressure Sensitivity works as expected (except on mouse-mode of your testbuild, as you pointed out), and I have no scaling or offset errors anymore. Everything works great now whether I'm in 2.92, 2.93, 3.0 daily or your 3.0 test build. Thank you very much for all your hard work and sorry for my goof, having tested with old and different drivers. Hope I didn't waste too much of your time. Have a great day!

Nicholas Rishel commented

2021-06-16 02:18:11 +02:00

In #88852#1177018, @Grimreth wrote:
@PrototypeNM1 That makes sense, so I suppose it scales from left to right?

Yep. :)

Everything works great now whether I'm in 2.92, 2.93, 3.0 daily or your 3.0 test build. Thank you very much for all your hard work and sorry for my goof, having tested with old and different drivers. Hope I didn't waste too much of your time.

Good news, and no worries. I'll ping you again when I have mouse-like pressure hooked up to make sure things are working correctly.

> In #88852#1177018, @Grimreth wrote: > @PrototypeNM1 That makes sense, so I suppose it scales from left to right? Yep. :) > Everything works great now whether I'm in 2.92, 2.93, 3.0 daily or your 3.0 test build. Thank you very much for all your hard work and sorry for my goof, having tested with old and different drivers. Hope I didn't waste too much of your time. Good news, and no worries. I'll ping you again when I have mouse-like pressure hooked up to make sure things are working correctly.

Nicholas Rishel commented

2021-06-22 22:10:55 +02:00

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

Nicholas Rishel closed this issue

2021-06-22 22:10:55 +02:00

Nicholas Rishel commented

2021-06-22 22:10:55 +02:00

Closed by 6f158f834d

Closed by 6f158f834dcf

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