Crash when baking vertex colors when Auto Smooth is enabled #89842

New Issue

Joep Peters · 2021-07-13T18:47:33+02:00

Joep Peters commented

2021-07-13 18:47:33 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1050/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 471.11

Blender Version
Broken: version: 2.93.1, branch: master, commit date: 2021-06-22 05:57, hash: 1b8d33b18c

Short description of error
When baking vertex colors with Cycles, Blender crashes when a mesh's normals are set to Auto Smooth.

Exact steps for others to reproduce the error

Create a new mesh object primitive (cube).
Add a vertex color channel to the mesh.
Toggle Auto Smooth to true in the Normals properties of the object's mesh.
Set renderer to Cycles and GPU compute.
Set the output bake target to 'Vertex Colors'.
Click bake and observe Blender crashing.

See this blend file:
BakeColorsBug.blend

When baking the object 'Cube', having Auto Smooth disabled, no crash.
When baking the object 'CubeAutoSmooth', having Auto Smooth enabled, Blender crashes.

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 1050/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 471.11 **Blender Version** Broken: version: 2.93.1, branch: master, commit date: 2021-06-22 05:57, hash: `1b8d33b18c` **Short description of error** When baking vertex colors with Cycles, Blender crashes when a mesh's normals are set to Auto Smooth. **Exact steps for others to reproduce the error** 1. Create a new mesh object primitive (cube). 2. Add a vertex color channel to the mesh. 3. Toggle `Auto Smooth` to true in the Normals properties of the object's mesh. 4. Set renderer to Cycles and `GPU compute`. 5. Set the output bake target to 'Vertex Colors'. 6. Click bake and observe Blender crashing. See this blend file: [BakeColorsBug.blend](https://archive.blender.org/developer/F10223398/BakeColorsBug.blend) When baking the object 'Cube', having Auto Smooth disabled, no crash. When baking the object 'CubeAutoSmooth', having Auto Smooth enabled, Blender crashes.

Joep Peters commented

2021-07-13 18:47:33 +02:00

Added subscriber: @schweppie

Pratik Borhade commented

2021-07-14 08:38:29 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-07-14 08:38:29 +02:00

Already fixed with the commit 5f9677fe0c but not backported yet (can still reproduce with recent 2.93.2 build but not with 3.0.0)

@schweppie , can you please try again with most recent 3.0.0 build? (https://builder.blender.org/download/daily/)

Already fixed with the commit 5f9677fe0c but not backported yet (can still reproduce with recent 2.93.2 build but not with 3.0.0) @schweppie , can you please try again with most recent 3.0.0 build? (https://builder.blender.org/download/daily/)

Joep Peters commented

2021-07-14 09:27:32 +02:00

Yep! Seems to be fixed in the most recent 3.0.0 build ae379714e4.

Can the fix also make it into 2.93.2? Would love to see it fixed in the LTS version.

Yep! Seems to be fixed in the most recent 3.0.0 build ae379714e4f1. Can the fix also make it into 2.93.2? Would love to see it fixed in the LTS version.

Philipp Oeser commented

2021-07-14 10:05:40 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2021-07-14 10:05:40 +02:00

I have added the fix on the list to be backported, see #88449 (Blender LTS: Maintenance Task 2.93).
Will merge this report with #88756 though, no reason to keep two reports open now.

I have added the fix on the list to be backported, see #88449 (Blender LTS: Maintenance Task 2.93). Will merge this report with #88756 though, no reason to keep two reports open now.

Philipp Oeser commented

2021-07-14 10:05:58 +02:00

Closed as duplicate of #88756

Philipp Oeser closed this issue

2021-07-14 10:05:58 +02:00

Joep Peters commented

2021-07-14 11:48:59 +02:00

Thanks @lichtwerk! Looking forward to the new 2.93 release : )

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Crash when baking vertex colors when Auto Smooth is enabled #89842