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GPU subdiv: visual bug in UV editor when unwrapping in multiple-object-editing #97660

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opened 2022-04-27 17:26:10 +02:00 by Manuel · 12 comments
Manuel commented 2022-04-27 17:26:10 +02:00
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System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: AMD Radeon RX 5700 XT ATI Technologies Inc. 4.5.14800 Core Profile Context 22.4.1 30.0.15021.1001

Blender Version
Broken: version: 3.2.0 Alpha, branch: master, commit date: 2022-04-26 21:17, hash: b82de02e7c

Short description of error
Weird graphical glitches in the UV editor when you try to unwrap multiple objects with subdiv enabled.
When you hit S to rescale the islands the visuals are ok.
Maybe related to #96338, but I'm not sure because I don't know how to turn of GPU subdiv.
2022-04-27 17-11-36.mkv

Exact steps for others to reproduce the error

  • Add two cubes and mark seams.
  • Add subdiv to the cubes
  • Select both cubes, go into edit mode and try to unwrap.
  • Now you see the visual bug in the UV editor

#97660.blend

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: AMD Radeon RX 5700 XT ATI Technologies Inc. 4.5.14800 Core Profile Context 22.4.1 30.0.15021.1001 **Blender Version** Broken: version: 3.2.0 Alpha, branch: master, commit date: 2022-04-26 21:17, hash: `b82de02e7c` **Short description of error** Weird graphical glitches in the UV editor when you try to unwrap multiple objects with subdiv enabled. When you hit S to rescale the islands the visuals are ok. Maybe related to #96338, but I'm not sure because I don't know how to turn of GPU subdiv. [2022-04-27 17-11-36.mkv](https://archive.blender.org/developer/F13032158/2022-04-27_17-11-36.mkv) **Exact steps for others to reproduce the error** - Add two cubes and mark seams. - Add subdiv to the cubes - Select both cubes, go into edit mode and try to unwrap. - Now you see the visual bug in the UV editor [#97660.blend](https://archive.blender.org/developer/F13053112/T97660.blend)
Manuel commented 2022-04-27 17:26:10 +02:00
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Added subscriber: @krieghof

Added subscriber: @krieghof
Kévin Dietrich commented 2022-04-27 19:16:10 +02:00
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Added subscriber: @kevindietrich

Added subscriber: @kevindietrich
Kévin Dietrich commented 2022-04-27 19:16:10 +02:00
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To turn off GPU subdivision you can go to Edit > Preferences > Viewport > Subdivision.

To turn off GPU subdivision you can go to `Edit > Preferences > Viewport > Subdivision`.
Manuel commented 2022-04-27 20:07:42 +02:00
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In #97660#1347834, @kevindietrich wrote:
To turn off GPU subdivision you can go to Edit > Preferences > Viewport > Subdivision.

Thanks, looks like GPU subdiv is the culprit.
2022-04-27 20-00-59.mp4

> In #97660#1347834, @kevindietrich wrote: > To turn off GPU subdivision you can go to `Edit > Preferences > Viewport > Subdivision`. Thanks, looks like GPU subdiv is the culprit. [2022-04-27 20-00-59.mp4](https://archive.blender.org/developer/F13032331/2022-04-27_20-00-59.mp4)
Richard Antalik commented 2022-04-28 08:45:01 +02:00
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Changed status from 'Needs Triage' to: 'Confirmed'

Changed status from 'Needs Triage' to: 'Confirmed'
Philipp Oeser commented 2022-05-05 12:32:34 +02:00
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Added subscriber: @lichtwerk

Added subscriber: @lichtwerk
Philipp Oeser commented 2022-05-05 12:32:34 +02:00
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I even see the glitches before unwrapping.

I even see the glitches before unwrapping.
Philipp Oeser changed title from Visual bug in UV editor when unwrapping multiple objects with subdiv to GPU subdiv: visual bug in UV editor when unwrapping in multiple-object-editing 2022-05-05 12:34:52 +02:00
Manuel commented 2022-05-05 14:39:42 +02:00
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In #97660#1352483, @lichtwerk wrote:
I even see the glitches before unwrapping.

I also noticed that in single-object-edit the pinned vertices are not marked red with gpu subdiv enabled. I don't know if this is related to this bug or if we should open a new report for that one.
2022-05-05 14-29-01.mp4

> In #97660#1352483, @lichtwerk wrote: > I even see the glitches before unwrapping. I also noticed that in single-object-edit the pinned vertices are not marked red with gpu subdiv enabled. I don't know if this is related to this bug or if we should open a new report for that one. [2022-05-05 14-29-01.mp4](https://archive.blender.org/developer/F13053245/2022-05-05_14-29-01.mp4)
Kévin Dietrich commented 2022-05-05 14:45:28 +02:00
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@krieghof this might be the same as #96836 (UV verts dont draw if certain modifiers are present (e.g geometry nodes, GPU subdiv, WeightedNormal w/o Autosmooth)), maybe try with an empty geometry node modifier like in the other report. If it works then you might want to open create a new bug report for it.

@krieghof this might be the same as #96836 (UV verts dont draw if certain modifiers are present (e.g geometry nodes, GPU subdiv, WeightedNormal w/o Autosmooth)), maybe try with an empty geometry node modifier like in the other report. If it works then you might want to open create a new bug report for it.
Manuel commented 2022-05-05 15:06:48 +02:00
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In #97660#1352541, @kevindietrich wrote:
@krieghof this might be the same as #96836 (UV verts dont draw if certain modifiers are present (e.g geometry nodes, GPU subdiv, WeightedNormal w/o Autosmooth)), maybe try with an empty geometry node modifier like in the other report. If it works then you might want to open create a new bug report for it.

You are right that is the one that gets mentioned in the comments. Even though I'm looking for duplicates it seems that I'm missing it every time. Sry for the noise.

> In #97660#1352541, @kevindietrich wrote: > @krieghof this might be the same as #96836 (UV verts dont draw if certain modifiers are present (e.g geometry nodes, GPU subdiv, WeightedNormal w/o Autosmooth)), maybe try with an empty geometry node modifier like in the other report. If it works then you might want to open create a new bug report for it. You are right that is the one that gets mentioned in the comments. Even though I'm looking for duplicates it seems that I'm missing it every time. Sry for the noise.
Kévin Dietrich commented 2022-05-05 16:57:34 +02:00
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As far as I can tell, this is the same as #97086: something is wrong multiple objects are in UV edit mode. Since the other report is older, will merge this one into it.

As far as I can tell, this is the same as #97086: something is wrong multiple objects are in UV edit mode. Since the other report is older, will merge this one into it.
Kévin Dietrich commented 2022-05-05 16:57:48 +02:00
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Closed as duplicate of #97086

Closed as duplicate of #97086
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