Weird shading in solid mode after modelling #77312

New Issue

Julian Mohr · 2020-06-03T16:54:52+02:00

Julian Mohr commented

2020-06-03 16:54:52 +02:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87

Blender Version
Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-06-03 12:54, hash: df17ee202b
Worked: (?)

Short description of error
The shading messes up after modelling with modifiers.

2020-06-03 16-47-10.mp4

Exact steps for others to reproduce the error
weird shading.blend

Open file
Enable Display modifier in edit mode

Shading will change

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87 **Blender Version** Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-06-03 12:54, hash: `df17ee202b` Worked: (?) **Short description of error** The shading messes up after modelling with modifiers. [2020-06-03 16-47-10.mp4](https://archive.blender.org/developer/F8574429/2020-06-03_16-47-10.mp4) **Exact steps for others to reproduce the error** [weird shading.blend](https://archive.blender.org/developer/F8574440/weird_shading.blend) - Open file - Enable Display modifier in edit mode Shading will change

Julian Mohr commented

2020-06-03 16:54:52 +02:00

Added subscriber: @Jewls

Julian Mohr commented

2020-06-03 16:57:57 +02:00

Sidenotes: my first guess was a corrupted file but it appered also in an independent file.
After exporting and reimporting the mesh it will behave correctly again.
2.80 - 2.83 are working fine

Sidenotes: my first guess was a corrupted file but it appered also in an independent file. After exporting and reimporting the mesh it will behave correctly again. 2.80 - 2.83 are working fine

Richard Antalik commented

2020-06-04 13:53:19 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-06-04 13:53:19 +02:00

What are steps to reproduce with file attached?

I don't immediately see bug even in video. What should I be looking for?

What are steps to reproduce with file attached? I don't immediately see bug even in video. What should I be looking for?

Richard Antalik commented

2020-06-04 13:53:28 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Julian Mohr commented

2020-06-04 15:02:48 +02:00

@iss the shading of the helmet is weird but it dissapears as soon the subsurf is turned on. can you see the diffrence?^^

I dont have any steps to repo it yet so i thought another community member experience the same and have more detailed steps to repo it or a dev can dig into it.

The steps of the file is just simply turn off and on subsurf.

@iss the shading of the helmet is weird but it dissapears as soon the subsurf is turned on. can you see the diffrence?^^ ![InkedAnubis-wrong_LI.jpg](https://archive.blender.org/developer/F8576709/InkedAnubis-wrong_LI.jpg) ![InkedAnubis-right_LI.jpg](https://archive.blender.org/developer/F8576710/InkedAnubis-right_LI.jpg) I dont have any steps to repo it yet so i thought another community member experience the same and have more detailed steps to repo it or a dev can dig into it. The steps of the file is just simply turn off and on subsurf.

Richard Antalik commented

2020-06-05 10:51:29 +02:00

Changed status from 'Needs User Info' to: 'Confirmed'

Julian Mohr commented

2020-06-05 15:59:17 +02:00

edit: it seems like one of the modifiers have to be turned on to get the "normal shading" it doesnt matter wich one

Chingiz Jumagulov commented

2020-06-20 17:52:04 +02:00

Added subscriber: @MeshVoid

Chingiz Jumagulov commented

2020-06-20 17:52:04 +02:00

Hi! I have the same weird shading behavior with ALL my mesh in Blender 2.90 since the very first alpha versions. (Running Windows 10, 64 bits, GPU: Geforce 1080, Geforce 1070, 32 gb ram)

Here's a screenshot of mesh looking weird with sub-d modifier turned off:

Now, I've turned it on and went to edit mode:

Notice changes. Weirdly if I set auto-smooth settings and ramp it up to something like 180 degrees it will smooth shade the object correctly. This has something to do with smooth shading. It is completely broken in 2.90 and I have observed this problem since the very first version of 2.90.

Here's the video of the bug:
2020-06-20 21-48-02.mp4

This has to be an issue with smooth shading in 2.90. All mesh objects are affected even the ones that were created solely in 2.90 version, so it's not a matter of corrupted files.

P.S. latest version of Blender is used:

UPDATE:

In material mode this weird shading bug looks like this:

Hi! I have the same weird shading behavior with ALL my mesh in Blender 2.90 since the very first alpha versions. (Running Windows 10, 64 bits, GPU: Geforce 1080, Geforce 1070, 32 gb ram) Here's a screenshot of mesh looking weird with sub-d modifier turned off: ![image.png](https://archive.blender.org/developer/F8633888/image.png) Now, I've turned it on and went to edit mode: ![image.png](https://archive.blender.org/developer/F8633893/image.png) Notice changes. Weirdly if I set auto-smooth settings and ramp it up to something like 180 degrees it will smooth shade the object correctly. This has something to do with smooth shading. It is completely broken in 2.90 and I have observed this problem since the very first version of 2.90. Here's the video of the bug: [2020-06-20 21-48-02.mp4](https://archive.blender.org/developer/F8633922/2020-06-20_21-48-02.mp4) This has to be an issue with **smooth shading** in 2.90. All mesh objects are affected even the ones that were created solely in 2.90 version, so it's not a matter of corrupted files. P.S. latest version of Blender is used: ![image.png](https://archive.blender.org/developer/F8633905/image.png) UPDATE: In material mode this weird shading bug looks like this: ![image.png](https://archive.blender.org/developer/F8633949/image.png)

Julian Mohr commented

2020-06-25 22:20:56 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Julian Mohr closed this issue

2020-06-25 22:20:56 +02:00

Julian Mohr self-assigned this 2020-06-25 22:20:56 +02:00

Julian Mohr commented

2020-06-25 22:20:56 +02:00

fixed by f8c8a5c092

fixed by f8c8a5c092

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