UV issue with Cycles GPU rendering on Apple M1 Pro (Seems related to Bevel node + Texture Image) #94527

New Issue

Ruben Brami · 2021-12-31T10:11:20+01:00

Ruben Brami commented

2021-12-31 10:11:20 +01:00

System Information
Operating system: macOS-12.1-arm64-arm-64bit 64 Bits
Graphics card: Apple M1 Pro Apple 4.1 Metal - 76.3

Blender Version
Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-12-30 22:39, hash: bf4358ed0c

Short description of error

With Cycles, when the scene is rendered with the GPU, the materials that have an image texture don't appear correctly on the model, just like the UV map wasn't right.
This doesn't happen with CPU rendering.

Here are some pics:

Exact steps for others to reproduce the error

Open attached .blend file
Select Metal Apple M1 Pro (GPU) in the System Preferences
Select Display Render Preview

UV_Issue_simplified.blend

Original file:
UV_Issue.blend

**System Information** Operating system: macOS-12.1-arm64-arm-64bit 64 Bits Graphics card: Apple M1 Pro Apple 4.1 Metal - 76.3 **Blender Version** Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-12-30 22:39, hash: `bf4358ed0c` **Short description of error** With Cycles, when the scene is rendered with the GPU, the materials that have an image texture don't appear correctly on the model, just like the UV map wasn't right. This doesn't happen with CPU rendering. Here are some pics: ![Capture d’écran 2021-12-31 à 21.59.17.png](https://archive.blender.org/developer/F12783586/Capture_d_e_cran_2021-12-31_a__21.59.17.png) ![Capture d’écran 2021-12-31 à 21.58.45.png](https://archive.blender.org/developer/F12783587/Capture_d_e_cran_2021-12-31_a__21.58.45.png) ![Capture d’écran 2021-12-30 à 10.04.22.png](https://archive.blender.org/developer/F12783095/Capture_d_e_cran_2021-12-30_a__10.04.22.png) **Exact steps for others to reproduce the error** - Open attached .blend file - Select Metal Apple M1 Pro (GPU) in the System Preferences - Select Display Render Preview [UV_Issue_simplified.blend](https://archive.blender.org/developer/F12787503/UV_Issue_simplified.blend) Original file: [UV_Issue.blend](https://archive.blender.org/developer/F12783106/UV_Issue.blend)

Ruben Brami commented

2021-12-31 10:11:20 +01:00

Added subscriber: @Brami-Ruben

Ruben Brami changed title from ~~UV issue with Cycles GPU rendering on Apple M1 Pro~~ to UV issue with Cycles GPU rendering on Apple M1 Pro (3.1)

2021-12-31 10:15:10 +01:00

Fen commented

2021-12-31 20:13:28 +01:00

Added subscriber: @chemicalcrux

Fen commented

2021-12-31 20:13:28 +01:00

I'm observing a similar issue, although I did not get that black area on the back: it just seems like the entire shirt is uniformly colored.

The file seems to work properly on the CPU without any extra add-ons.

Working on simplifying the shader now.

I'm observing a similar issue, although I did not get that black area on the back: it just seems like the entire shirt is uniformly colored. The file seems to work properly on the CPU without any extra add-ons. Working on simplifying the shader now.

Ruben Brami commented

2021-12-31 21:59:33 +01:00

Yes I see what you mean ! On the picture I posted above I modified the default material a lot which is not the case on the blended file I posted.

The file I posted is with the basic material from Mecabricks.

I should post the simplest photo.

Yes I see what you mean ! On the picture I posted above I modified the default material a lot which is not the case on the blended file I posted. The file I posted is with the basic material from Mecabricks. I should post the simplest photo.

Ruben Brami commented

2021-12-31 22:01:37 +01:00

Here, I edited the pictures in my post :)

Raimund Klink commented

2022-01-03 18:20:15 +01:00

Added subscriber: @Raimund58

Germano Cavalcante commented

2022-01-03 23:24:46 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2022-01-03 23:24:46 +01:00

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

Germano Cavalcante commented

2022-01-03 23:24:46 +01:00

I've simplified the file, but it's still not quite clear what causes the problem. It seems to involve Bevel node + Texture Image.
I'll edit the report description since the original file is very complex and some steps don't seem to be really necessary (like using the mecabricks add-on).
UV_Issue_simplified.blend

I've simplified the file, but it's still not quite clear what causes the problem. It seems to involve Bevel node + Texture Image. I'll edit the report description since the original file is very complex and some steps don't seem to be really necessary (like using the mecabricks add-on). [UV_Issue_simplified.blend](https://archive.blender.org/developer/F12787503/UV_Issue_simplified.blend)

Germano Cavalcante changed title from ~~UV issue with Cycles GPU rendering on Apple M1 Pro (3.1)~~ to UV issue with Cycles GPU rendering on Apple M1 Pro (Seems related to Bevel node + Texture Image)

2022-01-03 23:29:50 +01:00

Ruben Brami commented

2022-01-04 10:14:33 +01:00

In #94527#1282293, @mano-wii wrote:
I've simplified the file, but it's still not quite clear what causes the problem. It seems to involve Bevel node + Texture Image.
I'll edit the report description since the original file is very complex and some steps don't seem to be really necessary (like using the mecabricks add-on).

Thanks !! In deed, it seems to be related to the Bevel node. Thanks for your research !

> In #94527#1282293, @mano-wii wrote: > I've simplified the file, but it's still not quite clear what causes the problem. It seems to involve Bevel node + Texture Image. > I'll edit the report description since the original file is very complex and some steps don't seem to be really necessary (like using the mecabricks add-on). Thanks !! In deed, it seems to be related to the Bevel node. Thanks for your research !

blender-admin commented

2022-01-13 00:23:00 +01:00

This issue was referenced by blender/cycles@125decca34

This issue was referenced by blender/cycles@125decca343a93008777de21c6f27458f11598b8

blender-admin commented

2022-01-13 00:23:00 +01:00

This issue was referenced by 0cf2fafd81

This issue was referenced by 0cf2fafd81442518927a594e422ad2b26b54527a

Brecht Van Lommel commented

2022-01-13 10:51:26 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Brecht Van Lommel closed this issue

2022-01-13 10:51:26 +01:00

Brecht Van Lommel self-assigned this 2022-01-13 10:51:26 +01:00

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UV issue with Cycles GPU rendering on Apple M1 Pro (Seems related to Bevel node + Texture Image) #94527