Diffuse color pass - faded color due to Principled BSDF sheen #90544

New Issue

Prabhu · 2021-08-09T14:50:21+02:00

Prabhu commented

2021-08-09 14:50:21 +02:00

System Information
Operating system: Windows 8
Graphics card: NVIDIA GeForce RTX 2070 SUPER

Blender Version
Broken: 2.83.15
Worked: No

Short description of error
When we render a material with sheen in it more the value more color comes faded in Diffuse color pass.

Exact steps for others to reproduce the error

Apply Principled BSDF shader on a object with sheen value 1.
In View Layer Passes select Diffuse color.
Render the image & color is very fade in Diffuse Color pass due to sheen value.

**System Information** Operating system: Windows 8 Graphics card: NVIDIA GeForce RTX 2070 SUPER **Blender Version** Broken: 2.83.15 Worked: No **Short description of error** When we render a material with sheen in it more the value more color comes faded in Diffuse color pass.![Sheen 1.png](https://archive.blender.org/developer/F10275162/Sheen_1.png) ![Sheen 0.png](https://archive.blender.org/developer/F10275161/Sheen_0.png) **Exact steps for others to reproduce the error** - Apply Principled BSDF shader on a object with sheen value 1. - In View Layer Passes select Diffuse color. - Render the image & color is very fade in Diffuse Color pass due to sheen value.

Prabhu commented

2021-08-09 14:50:21 +02:00

Added subscriber: @Prabhusinger

Pratik Borhade commented

2021-08-10 10:07:11 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-08-10 10:40:52 +02:00

Broken: 2.83.15

I can not reproduce this on 2.83.17 (fb67495c7f) and on current master.

Please try again with the fresh builds: https://builder.blender.org/download/daily/

Also add the system info file generated from Help -> Save system Info

>Broken: 2.83.15 I can not reproduce this on 2.83.17 (`fb67495c7f`) and on current master. Please try again with the fresh builds: https://builder.blender.org/download/daily/ Also add the system info file generated from `Help -> Save system Info`

Pratik Borhade commented

2021-08-11 11:17:47 +02:00

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

Pratik Borhade commented

2021-08-19 06:24:55 +02:00

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

Pratik Borhade closed this issue

2021-08-19 06:24:55 +02:00

Pratik Borhade commented

2021-08-19 06:24:55 +02:00

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed. Thanks again for the report. If the problem persists please open a new report with the required information.

Prabhu commented

2021-08-23 14:36:16 +02:00

Hi team,
Sorry for delay in response. I have tried again in latest blender shared, but issue persists. If turn on metal value to 1 that object comes black in color pass & if add sheen in material the color fades. Kindly find the attached Blender file & render with diffuse color pass.

color pass error.blend

Hi team, Sorry for delay in response. I have tried again in latest blender shared, but issue persists. If turn on metal value to 1 that object comes black in color pass & if add sheen in material the color fades. Kindly find the attached Blender file & render with diffuse color pass.![Main render.png](https://archive.blender.org/developer/F10311671/Main_render.png) [color pass error.blend](https://archive.blender.org/developer/F10311670/color_pass_error.blend) ![color pass.png](https://archive.blender.org/developer/F10311668/color_pass.png)

Pratik Borhade commented

2021-08-24 10:35:49 +02:00

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

Pratik Borhade reopened this issue

2021-08-24 10:35:49 +02:00

Pratik Borhade commented

2021-08-24 11:10:06 +02:00

Also add the system info file generated from Help -> Save system Info

Hi, could you please add the file? I am not able to reproduce the mentioned issue.

System Information

Operating system : Windows-10-10.0.18362-SP0 64 Bits
Graphics card : AMD Radeon(TM) 535 ATI Technologies .
Version: 3.0.0-alpha, branch: master, Hash: rBeec1ea0ccf2a, commit date: 2021-08-23```

>Also add the system info file generated from Help -> Save system Info Hi, could you please add the file? I am not able to reproduce the mentioned issue. ![untitled.png](https://archive.blender.org/developer/F10318013/untitled.png) --- **System Information** ``` Operating system : Windows-10-10.0.18362-SP0 64 Bits Graphics card : AMD Radeon(TM) 535 ATI Technologies . Version: 3.0.0-alpha, branch: master, Hash: rBeec1ea0ccf2a, commit date: 2021-08-23```

Prabhu commented

2021-08-24 18:14:46 +02:00

color pass error.blend

Please find attached Blender file & render images for reference.

[color pass error.blend](https://archive.blender.org/developer/F10319493/color_pass_error.blend) ![3.jpg](https://archive.blender.org/developer/F10319494/3.jpg) ![1.jpg](https://archive.blender.org/developer/F10319496/1.jpg) ![2.jpg](https://archive.blender.org/developer/F10319497/2.jpg) Please find attached Blender file & render images for reference.

Pratik Borhade commented

2022-02-22 06:02:25 +01:00

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Pratik Borhade commented

2022-02-22 06:02:25 +01:00

If turn on metal value to 1 that object comes black in color pass

This is expected with metallic object because metallic value =1 don't contain diffuse layer
principled.html - At 0.0 the material consists of a diffuse or transmissive base layer, with a specular reflection layer on top.
Unsure how sheen value affects diffuse pass. Will let the developer decide if this is a bug or not

> If turn on metal value to 1 that object comes black in color pass This is expected with metallic object because metallic value =1 don't contain diffuse layer [principled.html ](https://docs.blender.org/manual/en/latest/render/shader_nodes/shader/principled.html)- `At 0.0 the material consists of a diffuse or transmissive base layer, with a specular reflection layer on top.` Unsure how sheen value affects diffuse pass. Will let the developer decide if this is a bug or not

Philipp Oeser removed the

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Diffuse color pass - faded color due to Principled BSDF sheen #90544