Sculpting and hair particle edit broken on Wayland #98714

New Issue

Caden Mitchell · 2022-06-09T09:52:41+02:00

Caden Mitchell commented

2022-06-09 09:52:41 +02:00

System Information
Operating system: Fedora 36 GNOME (on Wayland)
Graphics card: AMD Radeon RX 5700 XT

Blender Version
Broken: 3.3.0 alpha, 38bfa53081, master, 2022-06-09
Worked: 3.3.0 Alpha, e90ba74d3e, master, 2022-06-05

Short description of error
Dragging the tools (like brush or sculpt) will make the mouse behave very strange and makes it basically unusable.

Additionally, using the middle mouse button to orbit or pan will show the mouse cursor moving alongside the 3D vieport and your mouse movement (as is normal). However, upon releasing the middle mouse button, the cursor will snap back to the position it was at before it was pressed.

Notes:
In the "worked" Blender version, using these tools worked, but the mouse would stay stationary while the tool moved independently of the cursor.

In the "worked" Blender version, the cursor behaved differently but also incorrectly. When pressing the middle mouse button to orbit and pan the view, the cursor would remain completely still while the view moved as expected.

Edit:
This is compiled with "WITH_GHOST_WAYLAND=ON" as explained on the building wiki for my OS.

**System Information** Operating system: Fedora 36 GNOME (on Wayland) Graphics card: AMD Radeon RX 5700 XT **Blender Version** Broken: 3.3.0 alpha, 38bfa53081e9, master, 2022-06-09 Worked: 3.3.0 Alpha, e90ba74d3eb8, master, 2022-06-05 **Short description of error** Dragging the tools (like brush or sculpt) will make the mouse behave very strange and makes it basically unusable. Additionally, using the middle mouse button to orbit or pan will show the mouse cursor moving alongside the 3D vieport and your mouse movement (as is normal). However, upon releasing the middle mouse button, the cursor will snap back to the position it was at before it was pressed. **Notes:** In the "worked" Blender version, using these tools worked, but the mouse would stay stationary while the tool moved independently of the cursor. In the "worked" Blender version, the cursor behaved differently but also incorrectly. When pressing the middle mouse button to orbit and pan the view, the cursor would remain completely still while the view moved as expected. **Edit:** This is compiled with "WITH_GHOST_WAYLAND=ON" as explained on the building wiki for my OS.

Caden Mitchell commented

2022-06-09 09:52:42 +02:00

Added subscriber: @Caden-Mitchell

Omar Emara commented

2022-06-09 16:19:40 +02:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-06-09 16:19:40 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Omar Emara commented

2022-06-09 16:19:40 +02:00

There were three commits in that time related to this:
8b8fbffeea
a1d2efd190
b3e0101a35

So maybe we can ask Campbell to check this. But first, can you attach a video of this behavior?

There were three commits in that time related to this: 8b8fbffeea a1d2efd190 b3e0101a35 So maybe we can ask Campbell to check this. But first, can you attach a video of this behavior?

Caden Mitchell commented

2022-06-10 00:05:18 +02:00

@OmarEmaraDev Accidentally pulled before checking this thread, putting me at e6548c03f9. The problem still persists. In this video, you will probably notice that trying to particle edit causes my cursor to always jump to the same part of the screen. Same with sculpt and weight paint. Also, the cursor jumps back to its origin when orbiting and panning the view. It also does this in any panels such as the properties panel. Towards the end of the video, you can see me trying to resize the panels in the "Shading" tab. For some reason, I can only move the panel so far down. It seems to be stuck at approximately the same point that particle edit and sculpt mode were getting stuck at.

Screencast from 06-09-2022 03:47:37 PM.webm

Edit: You might need to download the video to see it at full speed. My monitor is 4K, so the video is as well.

@OmarEmaraDev Accidentally pulled before checking this thread, putting me at e6548c03f9f3. The problem still persists. In this video, you will probably notice that trying to particle edit causes my cursor to always jump to the same part of the screen. Same with sculpt and weight paint. Also, the cursor jumps back to its origin when orbiting and panning the view. It also does this in any panels such as the properties panel. Towards the end of the video, you can see me trying to resize the panels in the "Shading" tab. For some reason, I can only move the panel so far down. It seems to be stuck at approximately the same point that particle edit and sculpt mode were getting stuck at. [Screencast from 06-09-2022 03:47:37 PM.webm](https://archive.blender.org/developer/F13142362/Screencast_from_06-09-2022_03_47_37_PM.webm) Edit: You might need to download the video to see it at full speed. My monitor is 4K, so the video is as well.

Omar Emara commented

2022-06-10 09:17:01 +02:00

Changed status from 'Needs User Info' to: 'Needs Triage'

Omar Emara commented

2022-06-10 09:17:01 +02:00

Added subscriber: @ideasman42

Omar Emara commented

2022-06-10 09:17:01 +02:00

Here is a low quality and low size version of the video above for quick playback:

waylandCursorIssue.webm

@ideasman42 Seems to have been broken in one of your commits:
8b8fbffeea
a1d2efd190
b3e0101a35
While I can't reproduce myself, can you check?

Here is a low quality and low size version of the video above for quick playback: [waylandCursorIssue.webm](https://archive.blender.org/developer/F13142883/waylandCursorIssue.webm) @ideasman42 Seems to have been broken in one of your commits: 8b8fbffeea a1d2efd190 b3e0101a35 While I can't reproduce myself, can you check?

Campbell Barton commented

2022-06-10 12:19:55 +02:00

Note that Wayland doesn't allow the client (Blender) to move the cursor, the only options are:

lock the cursor to a fixed position.
constrain it to a region.
no locking.

So whatever behavior we choose will need to be compatible with that.

It probably makes sense to disable cursor-locking for painting as moving the mouse outside the view isn't all that useful (unlike some other cases such as panning the view or transform).

Orbiting the view (for e.g.) it's not so obvious what the ideal behavior would be - given these constraints. I'll check with others in the UI team.

Note that Wayland doesn't allow the client (Blender) to move the cursor, the only options are: - lock the cursor to a fixed position. - constrain it to a region. - no locking. So whatever behavior we choose will need to be compatible with that. It probably makes sense to disable cursor-locking for painting as moving the mouse outside the view isn't all that useful (unlike some other cases such as panning the view or transform). Orbiting the view (for e.g.) it's not so obvious what the ideal behavior would be - given these constraints. I'll check with others in the UI team.

Campbell Barton self-assigned this 2022-06-10 12:22:28 +02:00

Omar Emara commented

2022-06-10 12:35:44 +02:00

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Campbell Barton commented

2022-06-11 14:12:44 +02:00

@Caden-Mitchell the issue with resize being clamped to half-way down the window looks to be a bug in gnome-shell as it doesn't happen in KDE (I didn't check if they know about this or not, just that it's spesific to gnome-shell).

Could you make separate reports for these issues? It's impractical to track multiple issues in one report.

@Caden-Mitchell the issue with resize being clamped to half-way down the window looks to be a bug in gnome-shell as it doesn't happen in KDE (I didn't check if they know about this or not, just that it's spesific to gnome-shell). Could you make separate reports for these issues? It's impractical to track multiple issues in one report.

blender-admin commented

2022-06-12 16:15:14 +02:00

This issue was referenced by 37097ae62a

This issue was referenced by 37097ae62a9c13fca81f3fb6d1342057b2f17763

Campbell Barton commented

2022-06-12 16:21:09 +02:00

Changed status from 'Needs Developer To Reproduce' to: 'Resolved'

Campbell Barton closed this issue

2022-06-12 16:21:09 +02:00

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Sculpting and hair particle edit broken on Wayland #98714