Wireframe is not Updated When Converting to Mesh #81997

New Issue

Philip Holzmann · 2020-10-23T11:22:11+02:00

Philip Holzmann commented

2020-10-23 11:22:11 +02:00

System Information
Operating system: Windows 10 64 bit
Graphics card: Nvidia GTX 750 Ti

Blender Version
Broken: 2.90.1 release, 2.92 alpha 165b4f85ec
Worked: 2.79b

Short description of error
When "Optimal Display" in the Subdivision Surface modifier is enabled, only the edges of the original mesh are displayed in the wireframe.
Of course, when the modifier is applied regularly, the wireframe shows all edges of the resulting mesh.

However, if the modifier is applied by using Object > Convert To > Mesh, the wireframe is not updated and stays "sparse".

Exact steps for others to reproduce the error
wireframe_optimal_display.blend

Open the file.
In the 3d view header click on Object > Convert To > Mesh.
Observe that the mesh still has a sparse wireframe.
Enter Edit Mode and then switch back to Object Mode.
Observe that the wireframe now displays all edges.

**System Information** Operating system: Windows 10 64 bit Graphics card: Nvidia GTX 750 Ti **Blender Version** Broken: 2.90.1 release, 2.92 alpha 165b4f85ec23 Worked: 2.79b **Short description of error** When "Optimal Display" in the Subdivision Surface modifier is enabled, only the edges of the original mesh are displayed in the wireframe. Of course, when the modifier is applied regularly, the wireframe shows all edges of the resulting mesh. However, if the modifier is applied by using *Object* > *Convert To* > *Mesh*, the wireframe is not updated and stays "sparse". **Exact steps for others to reproduce the error** [wireframe_optimal_display.blend](https://archive.blender.org/developer/F9046737/wireframe_optimal_display.blend) 1. Open the file. 2. In the 3d view header click on *Object* > *Convert To* > *Mesh*. 3. Observe that the mesh still has a sparse wireframe. 4. Enter *Edit Mode* and then switch back to *Object Mode*. 5. Observe that the wireframe now displays all edges.

Philip Holzmann commented

2020-10-23 11:22:11 +02:00

Added subscriber: @Foaly

blender-admin commented

2020-10-23 22:27:46 +02:00

This issue was referenced by 42980abf8d

This issue was referenced by 42980abf8d0d126b0f472601cc47a3929217e394

Philipp Oeser commented

2020-10-23 22:30:40 +02:00

Added subscriber: @lichtwerk

Philipp Oeser self-assigned this 2020-10-23 22:30:40 +02:00

Philipp Oeser commented

2020-10-23 22:30:40 +02:00

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

Philipp Oeser commented

2020-10-23 22:30:40 +02:00

Can confirm.

When using Optimal Display, some edges are not flagged ME_EDGEDRAW | ME_EDGERENDER
When the modifier is applied through the UI in the modifier stack this is prevented because the modifyMesh callback is run with MOD_APPLY_TO_BASE_MESH (this will effectively turn of Optimal Display).
When converting to mesh, we'd probably have to do it "by hand", have a patch (not sure though if there is a nicer way to do this though), will post in a bit.

Can confirm. When using Optimal Display, some edges are not flagged `ME_EDGEDRAW` | `ME_EDGERENDER` When the modifier is applied through the UI in the modifier stack this is prevented because the `modifyMesh` callback is run with `MOD_APPLY_TO_BASE_MESH` (this will effectively turn of Optimal Display). When converting to mesh, we'd probably have to do it "by hand", have a patch (not sure though if there is a nicer way to do this though), will post in a bit.

Philipp Oeser commented

2020-11-06 17:28:40 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Philipp Oeser closed this issue

2020-11-06 17:28:40 +01:00

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Wireframe is not Updated When Converting to Mesh #81997