Regression: Backface of mesh appears as completely back when using a normal map texture with ambient occlusion enabled in Eevee #100788

New Issue

Matteo Scopel · 2022-09-03T10:52:58+02:00

Matteo Scopel commented

2022-09-03 10:52:58 +02:00

System Information
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 516.94

Blender Version
Broken: version: 3.3.0 Release Candidate, branch: master, commit date: 2022-09-02 20:48, hash: 831ed297d0
Worked: 3.3.0 Beta, branch: master, commit date: 2022-08-28 21:53, hash: 7b56c74881
First bad commit: 07cf3ce92f

Short description of error
When using a normal map image, the backface of the mesh appears as black. This was not happening with the previous 3.3 build I was using.
If I disable Ambient Occlusion, this behavior does not happen.

the backface is black in the latest build

the backface looks good in the previous build

Exact steps for others to reproduce the error

Attach a normal map to a plane
Enable Ambient Occlusion

The backface of the plane will appear as completely black, while previously it didn't using the same normal map

Here is a .blend displaying the behavior:

bugnormal.blend

**System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 516.94 **Blender Version** Broken: version: 3.3.0 Release Candidate, branch: master, commit date: 2022-09-02 20:48, hash: `831ed297d0` Worked: 3.3.0 Beta, branch: master, commit date: 2022-08-28 21:53, hash: 7b56c7488106 First bad commit: 07cf3ce92f **Short description of error** When using a normal map image, the backface of the mesh appears as black. This was not happening with the previous 3.3 build I was using. If I disable Ambient Occlusion, this behavior does not happen. ![image.png](https://archive.blender.org/developer/F13454614/image.png) the backface is black in the latest build ![image.png](https://archive.blender.org/developer/F13454612/image.png) the backface looks good in the previous build **Exact steps for others to reproduce the error** - Attach a normal map to a plane - Enable Ambient Occlusion # The backface of the plane will appear as completely black, while previously it didn't using the same normal map Here is a .blend displaying the behavior: [bugnormal.blend](https://archive.blender.org/developer/F13454627/bugnormal.blend)

Matteo Scopel commented

2022-09-03 10:52:58 +02:00

Added subscriber: @scopelma

Pratik Borhade commented

2022-09-03 11:22:40 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-09-03 11:46:54 +02:00

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

Pratik Borhade commented

2022-09-03 11:46:54 +02:00

Thanks for the report. I can confirm. Checking when it was changed

Pratik Borhade commented

2022-09-03 11:57:32 +02:00

Added subscriber: @fclem

Pratik Borhade commented

2022-09-03 11:57:32 +02:00

First bad commit : 07cf3ce92f
@fclem ^

First bad commit : 07cf3ce92f @fclem ^

Philipp Oeser changed title from ~~Backface of mesh appears as completely back when using a normal map texture with ambient occlusion enabled in Eevee~~ to Regression: Backface of mesh appears as completely back when using a normal map texture with ambient occlusion enabled in Eevee

2022-09-03 12:29:07 +02:00

blender-admin commented

2022-09-05 09:10:27 +02:00

This issue was referenced by b0d9b6f6df

This issue was referenced by b0d9b6f6df230dce727200cb9909da7638d6caba

Clément Foucault commented

2022-09-05 09:13:17 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Clément Foucault closed this issue

2022-09-05 09:13:17 +02:00

Clément Foucault self-assigned this 2022-09-05 09:13:17 +02:00

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Regression: Backface of mesh appears as completely back when using a normal map texture with ambient occlusion enabled in Eevee #100788

The backface of the plane will appear as completely black, while previously it didn't using the same normal map