Blender EEVEE Roughness Does Not Work Properly on Metallic Materials #52043

New Issue

Caden Mitchell · 2017-07-13T07:54:59+02:00

Caden Mitchell commented

2017-07-13 07:54:59 +02:00

System Information

Machine: Lenovo Thinkpad X220 Tablet Laptop
OS: Manjaro KDE
Graphics: Intel HD Graphics 3000
CPU: Intel i5-2520M
RAM: 8 GB

Blender Version

Branch: blender2.8
Hash: ffea77253e

Short description of error

The roughness appears to be very buggy in EEVEE. With a low roughness (.1 or under but above 0) on all reflective shaders except for specular the material appears to be black. The object has to be fully metallic or a glossy bsdf for this to work. Sometimes when the 3d view is being resized there will be colorfull squares all over the screen.

Exact steps for others to reproduce the error

From file:

Open the provided .blend file.
Before moving the view take a look at the screen.
The screen should appear to have colorful squares surrounding the reflective plane.
Experiment with connecting different shaders with the output.
All shaders except for specular should appear black.
If it is not working the first time try resizing the space between the node editor and the viewport and see if that works.

From scratch:

With the default scene move the cube up by one Blender unit.
Place a plane in the center of the grid and scale it by 10 Blender units.
Place a reflection plane light probe in the center of the grid and scale it by 10 Blender units.
Move the reflection plane light probe on the z-axis by .01 Blender units.
Turn off "Show Data" in the reflection plane's properties.
Split the view and open a node editor.
Create a new material for the plane.
Change the metallic slider on the metallic shader to 1 and the roughness to .1.

You should notice that the material is black.

Attached files

Broken Roughness.blend

Errors in terminal

[caden@Manjaro_Linux ~]$ /home/caden/Blender_2.80_DEV/blender
Read prefs: /home/caden/.config/blender/2.80/config/userpref.blend
Received X11 Error:
        error code:   178
        request code: 155
        minor code:   34
        error text:   GLXBadFBConfig
Received X11 Error:
        error code:   178
        request code: 155
        minor code:   34
        error text:   GLXBadFBConfig
Received X11 Error:
        error code:   178
        request code: 155
        minor code:   34
        error text:   GLXBadFBConfig
Received X11 Error:
        error code:   178
        request code: 155
        minor code:   34
        error text:   GLXBadFBConfig
Received X11 Error:
        error code:   178
        request code: 155
        minor code:   34
        error text:   GLXBadFBConfig
Received X11 Error:
        error code:   178
        request code: 155
        minor code:   34
        error text:   GLXBadFBConfig
found bundled python: /home/caden/Blender_2.80_DEV/2.80/python
Read blend: /home/caden/Documents/Blender/2.8/Broken Roughness.blend

**System Information** - Machine: Lenovo Thinkpad X220 Tablet Laptop - OS: Manjaro KDE - Graphics: Intel HD Graphics 3000 - CPU: Intel i5-2520M - RAM: 8 GB **Blender Version** Branch: blender2.8 Hash: ffea77253e **Short description of error** The roughness appears to be very buggy in EEVEE. With a low roughness (.1 or under but above 0) on all reflective shaders except for specular the material appears to be black. The object has to be fully metallic or a glossy bsdf for this to work. Sometimes when the 3d view is being resized there will be colorfull squares all over the screen. **Exact steps for others to reproduce the error** From file: - Open the provided .blend file. - Before moving the view take a look at the screen. - The screen should appear to have colorful squares surrounding the reflective plane. - Experiment with connecting different shaders with the output. - All shaders except for specular should appear black. - If it is not working the first time try resizing the space between the node editor and the viewport and see if that works. From scratch: - With the default scene move the cube up by one Blender unit. - Place a plane in the center of the grid and scale it by 10 Blender units. - Place a reflection plane light probe in the center of the grid and scale it by 10 Blender units. - Move the reflection plane light probe on the z-axis by .01 Blender units. - Turn off "Show Data" in the reflection plane's properties. - Split the view and open a node editor. - Create a new material for the plane. - Change the metallic slider on the metallic shader to 1 and the roughness to .1. # You should notice that the material is black. **Attached files** ![Screenshot_20170712_233254.png](https://archive.blender.org/developer/F663276/Screenshot_20170712_233254.png) [Broken Roughness.blend](https://archive.blender.org/developer/F663279/Broken_Roughness.blend) **Errors in terminal** ``` [caden@Manjaro_Linux ~]$ /home/caden/Blender_2.80_DEV/blender Read prefs: /home/caden/.config/blender/2.80/config/userpref.blend Received X11 Error: error code: 178 request code: 155 minor code: 34 error text: GLXBadFBConfig Received X11 Error: error code: 178 request code: 155 minor code: 34 error text: GLXBadFBConfig Received X11 Error: error code: 178 request code: 155 minor code: 34 error text: GLXBadFBConfig Received X11 Error: error code: 178 request code: 155 minor code: 34 error text: GLXBadFBConfig Received X11 Error: error code: 178 request code: 155 minor code: 34 error text: GLXBadFBConfig Received X11 Error: error code: 178 request code: 155 minor code: 34 error text: GLXBadFBConfig found bundled python: /home/caden/Blender_2.80_DEV/2.80/python Read blend: /home/caden/Documents/Blender/2.8/Broken Roughness.blend ```

Caden Mitchell commented

2017-07-13 07:54:59 +02:00

Changed status to: 'Open'

Caden Mitchell commented

2017-07-13 07:54:59 +02:00

Added subscriber: @CadenMitchell-3

Caden Mitchell commented

2017-07-13 07:57:20 +02:00

It's like this in previous versions too.

Vuk Gardašević commented

2017-08-24 15:48:26 +02:00

Added subscriber: @VukGardasevic

Vuk Gardašević commented

2017-08-24 15:48:26 +02:00

Changed status from 'Open' to: 'Archived'

Vuk Gardašević closed this issue

2017-08-24 15:48:26 +02:00

Vuk Gardašević self-assigned this 2017-08-24 15:48:26 +02:00

Vuk Gardašević commented

2017-08-24 15:48:26 +02:00

Thank you for the report, but 2.8 is currently under heavy development, and we are not taking bugs from end users yet.
Keep watching for updates at https://builder.blender.org/download/ to see if your issue got resolved.

For the time being, closing this report.

Thank you for the report, but 2.8 is currently under heavy development, and we are not taking bugs from end users yet. Keep watching for updates at https://builder.blender.org/download/ to see if your issue got resolved. For the time being, closing this report.

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Blender EEVEE Roughness Does Not Work Properly on Metallic Materials #52043

You should notice that the material is black.