Shading Problem in Eevee in Top Orthonographic View When the Scale is not Applie Yet #79216

New Issue

Zijun Zhou · 2020-07-24T03:31:10+02:00

Zijun Zhou commented

2020-07-24 03:31:10 +02:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce MX130/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 451.67

Blender Version
Broken: version: 2.90.0 Beta, branch: master, commit date: 2020-07-23 18:40, hash: 9cbf43801b
Worked: Never

Short description of error
There is a strange shading problem in Eevee that happens when the object is scaled and the scale is not applied yet. The light needs to be at certain angle to make it appear. The problem also has to do with the topology of the mesh, it is hard to notice with just one face (though still there as you can see it flickers when you scale it), but it becomes obvious when subdivided.

Exact steps for others to reproduce the error
Based on the attached .blend file
Open my .blend file, you can see there is a circle and a light in the scene. You can see the problem by turn on render view. The light is placed at certain angle to make the problem show.
The circle was created using the below steps:

(0. delete or hide my circle)

Shift A and add a circle
Lower left corner menu, the fill type choose Ngon
Scale it up a little, don't apply the scale, and you can see it flickers during the scaling process
Edit mode, hit the a key to choose all, hit the i key to inset the circle, and then inset it again, and see it has to do with the topology
Object mode, ctrl a apply the scale, the problem is gone, it has to do with the scaling.
Orthonographic Top View Shading Problem.blend

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce MX130/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 451.67 **Blender Version** Broken: version: 2.90.0 Beta, branch: master, commit date: 2020-07-23 18:40, hash: `9cbf43801b` Worked: Never **Short description of error** There is a strange shading problem in Eevee that happens when the object is scaled and the scale is not applied yet. The light needs to be at certain angle to make it appear. The problem also has to do with the topology of the mesh, it is hard to notice with just one face (though still there as you can see it flickers when you scale it), but it becomes obvious when subdivided. ![Top View Shading Problem.jpg](https://archive.blender.org/developer/F8717053/Top_View_Shading_Problem.jpg) **Exact steps for others to reproduce the error** Based on the attached .blend file Open my .blend file, you can see there is a circle and a light in the scene. You can see the problem by turn on render view. The light is placed at certain angle to make the problem show. The circle was created using the below steps: (0. delete or hide my circle) 1. Shift A and add a circle 2. Lower left corner menu, the fill type choose Ngon 3. Scale it up a little, don't apply the scale, and you can see it flickers during the scaling process 4. Edit mode, hit the a key to choose all, hit the i key to inset the circle, and then inset it again, and see it has to do with the topology 5. Object mode, ctrl a apply the scale, the problem is gone, it has to do with the scaling. [Orthonographic Top View Shading Problem.blend](https://archive.blender.org/developer/F8717046/Orthonographic_Top_View_Shading_Problem.blend)

Zijun Zhou commented

2020-07-24 03:31:10 +02:00

Added subscriber: @Eary

Germano Cavalcante commented

2020-07-24 22:52:51 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-07-24 22:52:51 +02:00

I cannot reproduce the problem.

This seems like a graphic driver issue. Please double-check if the drivers are up to date.

To upgrade to the latest driver, see here for more information: https://docs.blender.org/manual/en/dev/troubleshooting/gpu/index.html

I cannot reproduce the problem. This seems like a graphic driver issue. Please double-check if the drivers are up to date. To upgrade to the latest driver, see here for more information: https://docs.blender.org/manual/en/dev/troubleshooting/gpu/index.html

Zijun Zhou commented

2020-07-25 07:02:17 +02:00

I am pretty sure my driver is the latest.

Zijun Zhou commented

2020-07-25 08:15:59 +02:00

An update here, checking the "high quality normals" checkbox under the performance tab in the render settings also make the phenomenon react. (I originally thought it disappeared, but once I scale it after that, it appears again) I think this information may help people identify the problem.

YAFU commented

2020-07-25 11:23:28 +02:00

Added subscriber: @YAFU

YAFU commented

2020-07-25 11:23:28 +02:00

Hi.
I can reproduce the problem here on Kubuntu Linux 20.04. Blender from master, GTX 960, 450.57 driver

Edit:
BTW, the problem also occurs in Blender 2.83.1 LTS here.

Hi. I can reproduce the problem here on Kubuntu Linux 20.04. Blender from master, GTX 960, 450.57 driver Edit: BTW, the problem also occurs in Blender 2.83.1 LTS here.

Philipp Oeser commented

2020-08-27 19:35:27 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-08-27 19:35:27 +02:00

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

Philipp Oeser commented

2020-08-27 19:35:27 +02:00

I can confirm as well

System Information
Operating system: Linux-5.7.10-201.fc32.x86_64-x86_64-with-fedora-32-Thirty_Two 64 Bits
Graphics card: GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100
version: 2.91.0 Alpha, branch: master, commit date: 2020-08-23 12:48, hash: e4932d1167

An orthographic camera also renders it like that.
#79216.blend
As soon as you rotate the camera the slightest bit, issue is gone.

I can confirm as well **System Information** Operating system: Linux-5.7.10-201.fc32.x86_64-x86_64-with-fedora-32-Thirty_Two 64 Bits Graphics card: GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100 version: 2.91.0 Alpha, branch: master, commit date: 2020-08-23 12:48, hash: `e4932d1167` An orthographic camera also renders it like that. [#79216.blend](https://archive.blender.org/developer/F8815737/T79216.blend) As soon as you rotate the camera the slightest bit, issue is gone.

Philipp Oeser removed the

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Shading Problem in Eevee in Top Orthonographic View When the Scale is not Applie Yet #79216