Lamp data color not replaced when using nodes in cycles #65859

New Issue

Cédric · 2019-06-16T18:24:55+02:00

Cédric commented

2019-06-16 18:24:55 +02:00

System Information
Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 418.91

Blender Version
Broken: version: 2.80 (sub 74), branch: blender2.7, commit date: 2019-06-15 22:35, hash: 87de71a8aa
Worked: (optional)

Short description of error
In Cycles, the data color of the lamp is not replaced but multiplied when using the nodes shading.

Exact steps for others to reproduce the error
Open the default scene
Select the point lamp
Change the data color to red
In the object data, click on "Use Nodes"
In the Emission node, change the color to blue.
The lamp color should be blue, but instead of replacing the data color, the color is multiplied.

color_data_lamp.blend

**System Information** Operating system: Windows-10-10.0.17763 64 Bits Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 418.91 **Blender Version** Broken: version: 2.80 (sub 74), branch: blender2.7, commit date: 2019-06-15 22:35, hash: `87de71a8aa` Worked: (optional) **Short description of error** In Cycles, the data color of the lamp is not replaced but multiplied when using the nodes shading. **Exact steps for others to reproduce the error** Open the default scene Select the point lamp Change the data color to red In the object data, click on "Use Nodes" In the Emission node, change the color to blue. The lamp color should be blue, but instead of replacing the data color, the color is multiplied. ![image.png](https://archive.blender.org/developer/F7105891/image.png) [color_data_lamp.blend](https://archive.blender.org/developer/F7105890/color_data_lamp.blend)

Cédric commented

2019-06-16 18:24:55 +02:00

Added subscriber: @Clarkx

blender-admin commented

2019-06-16 18:24:55 +02:00

#68535 was marked as duplicate of this issue

blender-admin commented

2019-06-16 18:24:55 +02:00

#68361 was marked as duplicate of this issue

Brecht Van Lommel commented

2019-06-16 20:48:52 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2019-06-16 20:48:52 +02:00

Changed status from 'Open' to: 'Archived'

Brecht Van Lommel closed this issue

2019-06-16 20:48:52 +02:00

Brecht Van Lommel self-assigned this 2019-06-16 20:48:52 +02:00

Brecht Van Lommel commented

2019-06-16 20:48:52 +02:00

This is by design, the shading nodes are intended to be an additional effect and not to replace the color.

Cédric commented

2019-06-16 23:09:23 +02:00

Ok, thanks, i thought it was a bug..

Sorry to bother you, but just for my information, why not just set the color data to full white and hide it if "Use nodes" is checked ?

Maybe that is because EEVEE does not support nodes for the moment, but what is the benefits of this design as a user ? because it is veryconfusing. If I check "Use Nodes", I'm expecting to use only the nodes. Is it the same for the strength and the power ?

Thanks again for your help.

Ok, thanks, i thought it was a bug.. Sorry to bother you, but just for my information, why not just set the color data to full white and hide it if "Use nodes" is checked ? Maybe that is because EEVEE does not support nodes for the moment, but what is the benefits of this design as a user ? because it is *very*confusing. If I check "Use Nodes", I'm expecting to use *only* the nodes. Is it the same for the strength and the power ? Thanks again for your help.

Brecht Van Lommel commented

2019-06-17 18:30:45 +02:00

It's the same for strength and power, and it's useful to be able to share lights with Eevee and to allow units to be used for power.

Brecht Van Lommel commented

2019-08-10 03:44:32 +02:00

Added subscribers: @YegorSmirnov, @Mets, @jenkm

Philipp Oeser commented

2019-08-11 21:44:36 +02:00

Added subscribers: @BugFinder, @lichtwerk

Luca Crisi commented

2019-08-12 19:26:32 +02:00

Well, but ... seriously: two input nodes labelled the same as two other input nodes?
I think it would be a good idea if the labels close to the input nodes would have some different text.

Say: Color, Strength for the "normal" values (as of now) and Color Multiplier, Strength Multiplier for the "Nodes" values.
Probably this would help creating less confusion.

I think it's just a 5 seconds update on the UI for man...
And a big leap for humanity!

;)

Just to cite someone wiser than me, some 50 years ago...

Well, but ... seriously: two input nodes labelled **the same** as two other input nodes? I think it would be a good idea if the labels close to the input nodes would have some **different text**. Say: `Color`, `Strength` for the "normal" values (as of now) and `Color Multiplier`, `Strength Multiplier` for the "Nodes" values. Probably this would help creating less confusion. I think it's just a 5 seconds update on the UI for man... And a big leap for humanity! ;) Just to cite someone wiser than me, some 50 years ago...

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Lamp data color not replaced when using nodes in cycles #65859