black render of mirrored object - cycles #70561

New Issue

Artur · 2019-10-05T16:46:15+02:00

Artur commented

2019-10-05 16:46:15 +02:00

System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.86

Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: f6cb5f5449
Worked: (optional)

Short description of error
when using the mirror the mirrored object come as black. Ive checked for overlaping and copied faces, recalculated normals. I had bevel but I removed it and it still comes as black. Eevee seames to work

Exact steps for others to reproduce the error
The element come from sketchup exported to obj and imported to blender. I baisically recreated the geometry in edit mode using just a section from the importet geometry and extruded it and finally mirrored. bug.blend

[Based on the default startup or an attached .blend file (as simple as possible)]

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.86 **Blender Version** Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: `f6cb5f5449` Worked: (optional) **Short description of error** when using the mirror the mirrored object come as black. Ive checked for overlaping and copied faces, recalculated normals. I had bevel but I removed it and it still comes as black. Eevee seames to work **Exact steps for others to reproduce the error** The element come from sketchup exported to obj and imported to blender. I baisically recreated the geometry in edit mode using just a section from the importet geometry and extruded it and finally mirrored. [bug.blend](https://archive.blender.org/developer/F7791097/bug.blend) ![black mirror.png](https://archive.blender.org/developer/F7791099/black_mirror.png) [Based on the default startup or an attached .blend file (as simple as possible)]

Artur commented

2019-10-05 16:46:15 +02:00

Added subscriber: @arturmachura

Russell commented

2019-10-05 17:04:42 +02:00

Added subscriber: @Russ1642

dark999 commented

2019-10-05 17:58:12 +02:00

Added subscriber: @dark999

dark999 commented

2019-10-05 17:58:12 +02:00

can confirm this problem on linux Blender 2.80 f6cb5f5449 (Stable), OpenSUSE Tumbleweed/KDE, AMD FX8350, 16GB DDR3, GTX690 2+2 GB VRam- Nvidia drivers 435.21, Factory Setting applied, LoadUI and Trusted Source disabled in file browser, same problem in Blender 2.81 ab519b91b2

this problem is visible in Solid, Material Preview (Lock Dev) and Rendered viewport, if i apply subdivision to object, problem disappear ans it is show as original mirrored object instead to be black

can confirm this problem on linux Blender 2.80 f6cb5f54494e (Stable), OpenSUSE Tumbleweed/KDE, AMD FX8350, 16GB DDR3, GTX690 2+2 GB VRam- Nvidia drivers 435.21, Factory Setting applied, LoadUI and Trusted Source disabled in file browser, same problem in Blender 2.81 ab519b91b2c4 this problem is visible in Solid, Material Preview (Lock Dev) and Rendered viewport, if i apply subdivision to object, problem disappear ans it is show as original mirrored object instead to be black

Germano Cavalcante commented

2019-10-08 16:34:38 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2019-10-08 16:34:38 +02:00

Changed status from 'Open' to: 'Archived'

Germano Cavalcante closed this issue

2019-10-08 16:34:38 +02:00

Germano Cavalcante self-assigned this 2019-10-08 16:34:38 +02:00

Germano Cavalcante commented

2019-10-08 16:34:38 +02:00

It is not a bug. This geometry has Custom Normals.
Delete the Custom Normals if you want the original normals.

It is not a bug. This geometry has `Custom Normals`. Delete the `Custom Normals` if you want the original normals.

Germano Cavalcante removed their assignment 2019-10-08 16:43:40 +02:00

Bastien Montagne was assigned by Germano Cavalcante

2019-10-08 16:43:40 +02:00

Germano Cavalcante commented

2019-10-08 16:43:40 +02:00

Added subscriber: @mont29

Germano Cavalcante commented

2019-10-08 16:43:40 +02:00

On second thought, Custom Split Normals should be mirrored as well.
This is how it worked in blender 2.79

@mont29, this seems to involve more modifiers than viewport.
Do you know what may be happening?

On second thought, Custom Split Normals should be mirrored as well. This is how it worked in blender 2.79 @mont29, this seems to involve more modifiers than viewport. Do you know what may be happening?

blender-admin commented

2019-10-08 20:16:07 +02:00

This issue was referenced by 47b95a2957

This issue was referenced by 47b95a295706c3092e48a227b50360748f8789be

Bastien Montagne commented

2019-10-08 20:18:16 +02:00

Changed status from 'Archived' to: 'Open'

Bastien Montagne reopened this issue

2019-10-08 20:18:16 +02:00

Bastien Montagne commented

2019-10-08 20:18:16 +02:00

there is code in that modifier to handle custom normals, just not using the proper transform for normals… Fix incoming.