shader to RGB node doesn't work correctly in blender3.2 #100125

New Issue

guang liang chen · 2022-08-01T18:28:58+02:00

guang liang chen commented

2022-08-01 18:28:58 +02:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 670/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.50

Blender Version
Broken: version: 3.2.1, branch: master, commit date: 2022-07-05 15:44, hash: a2d59b2dac
Worked: (newest version of Blender that worked as expected)

Short description of error
I found a bug,in EEVEE engine the (shader to RGB) node invalidates the SSS node in Blender3.2 / Blender3.3, but it works fine in Blender3.1.

Exact steps for others to reproduce the error
here is the blend file I test.shader to RGB(error).blend
shader to RGB(error).mp4

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 670/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.50 **Blender Version** Broken: version: 3.2.1, branch: master, commit date: 2022-07-05 15:44, hash: `a2d59b2dac` Worked: (newest version of Blender that worked as expected) **Short description of error** I found a bug,in EEVEE engine the (shader to RGB) node invalidates the SSS node in Blender3.2 / Blender3.3, but it works fine in Blender3.1. **Exact steps for others to reproduce the error** here is the blend file I test.[shader to RGB(error).blend](https://archive.blender.org/developer/F13329719/shader_to_RGB_error_.blend) [shader to RGB(error).mp4](https://archive.blender.org/developer/F13329721/shader_to_RGB_error_.mp4)

guang liang chen commented

2022-08-01 18:28:58 +02:00

Added subscriber: @imdjs

guang liang chen changed title from ~~shader to RGB node doesn't work in blender3.2~~ to shader to RGB node doesn't work correctly in blender3.2

2022-08-01 19:21:21 +02:00

Germano Cavalcante commented

2022-08-01 23:28:02 +02:00

Added subscribers: @fclem, @mano-wii

Germano Cavalcante commented

2022-08-01 23:28:02 +02:00

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

Germano Cavalcante commented

2022-08-01 23:28:02 +02:00

This seems a side effect of the changes in 80859a6cb2.

ShaderToRGB node will remove any SSR and SSS form a shader.

I'm not sure if the previous behavior will be implemented anytime soon.
Cc @fclem

This seems a side effect of the changes in 80859a6cb2. > - ShaderToRGB node will remove any SSR and SSS form a shader. I'm not sure if the previous behavior will be implemented anytime soon. Cc @fclem

guang liang chen commented

2022-08-02 04:56:10 +02:00

thank you for explaining. I hope shader to RGB node can be worked on cycles also ,because shader to RGB node and SSS node together, the effect is very good in skin shader.

If Shader to RGB is turned off, the character's light and dark color changes will be very flat.It can simulate the color change of the dark and bright parts of the skin.

thank you for explaining. I hope shader to RGB node can be worked on cycles also ,because shader to RGB node and SSS node together, the effect is very good in skin shader. If Shader to RGB is turned off, the character's light and dark color changes will be very flat.It can simulate the color change of the dark and bright parts of the skin. ![shader to RGB of on.jpg](https://archive.blender.org/developer/F13330481/shader_to_RGB_of_on.jpg)

Clément Foucault commented

2022-08-02 11:00:22 +02:00

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

Clément Foucault closed this issue

2022-08-02 11:00:22 +02:00

Clément Foucault commented

2022-08-02 11:00:22 +02:00

I'm not sure if the previous behavior will be implemented anytime soon.

I am sorry but this was a intended regression I made to work towards EEVEE Next that will have the same behavior.

It has been documented in the release notes.

Materials using Shader-To-RGB nodes now never receive Screen Space Reflections or Sub-Surface Scattering effects even if the BSDFs are not connected to the Shader-To-RGB nodes

So I consider it working as intended. I don't have anything to propose as a workaround. Sorry again.

> I'm not sure if the previous behavior will be implemented anytime soon. I am sorry but this was a intended regression I made to work towards EEVEE Next that will have the same behavior. It has been documented in the release notes. > Materials using Shader-To-RGB nodes now never receive Screen Space Reflections or Sub-Surface Scattering effects even if the BSDFs are not connected to the Shader-To-RGB nodes So I consider it working as intended. I don't have anything to propose as a workaround. Sorry again.

Germano Cavalcante referenced this issue

2023-02-09 16:04:56 +01:00

Subsurface does not work properly #104496

MeguiTaA12 commented

2023-04-01 01:09:06 +02:00

@fclem Is there a way to get this back into the blender? I'm stuck on version 3.1.1 because my models look really ugly without this shading, I just wanted this implementation again ;-;

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shader to RGB node doesn't work correctly in blender3.2 #100125