Problem with Diffuse map baking and with Metallic map #69826

New Issue

Michael · 2019-09-13T02:56:00+02:00

Michael commented

2019-09-13 02:56:00 +02:00

System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.86

Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: f6cb5f5449
Worked: (optional)

Short description of error
When I try to bake the Diffuse Map with the Metallic Map connected in Principled Shader, the Diffuse Map bakes like a completely black image, but when I turn off the Metallic Map all is fine. The same thing happens when you set the Metallic value to 1, and the problem goes away if the Metallic value is set to 0. I noticed this problem when I tried to bake the Diffuse map of a large object, where the peak was just a part of it, but when I investigated the problem I was able to repeat it with only one this peak.

Exact steps for others to reproduce the error
Just try to connect Metallic Map in Principled Shader and press Bake, then try to disconnect Metallic Map from Principled Shader and press Bake, then try to add the Metallic value to 1 and press Bake, and then try to add the Metallic value to 0 and press Bake.

baking_diffuse_metallic_bugreport.blend

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.86 **Blender Version** Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: `f6cb5f5449` Worked: (optional) **Short description of error** When I try to bake the Diffuse Map with the Metallic Map connected in Principled Shader, the Diffuse Map bakes like a completely black image, but when I turn off the Metallic Map all is fine. The same thing happens when you set the Metallic value to 1, and the problem goes away if the Metallic value is set to 0. I noticed this problem when I tried to bake the Diffuse map of a large object, where the peak was just a part of it, but when I investigated the problem I was able to repeat it with only one this peak. **Exact steps for others to reproduce the error** Just try to connect Metallic Map in Principled Shader and press Bake, then try to disconnect Metallic Map from Principled Shader and press Bake, then try to add the Metallic value to 1 and press Bake, and then try to add the Metallic value to 0 and press Bake. [baking_diffuse_metallic_bugreport.blend](https://archive.blender.org/developer/F7742629/baking_diffuse_metallic_bugreport.blend)

Michael commented

2019-09-13 02:56:01 +02:00

Added subscriber: @Egyptolog

Brecht Van Lommel commented

2019-09-13 09:13:37 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2019-09-13 09:13:37 +02:00

Changed status from 'Open' to: 'Archived'

Brecht Van Lommel closed this issue

2019-09-13 09:13:37 +02:00

Brecht Van Lommel self-assigned this 2019-09-13 09:13:37 +02:00

Brecht Van Lommel commented

2019-09-13 09:13:37 +02:00

What you're trying to achieve is baking the base color, which would be good to have but it's not supported currently.

Metallic reflection is not diffuse, it's specular and so not part of the diffuse color.

What you're trying to achieve is baking the base color, which would be good to have but it's not supported currently. Metallic reflection is not diffuse, it's specular and so not part of the diffuse color.

Michael commented

2019-09-13 12:30:47 +02:00

I trying to bake Base Color like Diffuse, and all my meshes and textures are baked ok. This one has color and has metallnes, and I trying to bake color, but not the metalness, when I bake the Diffuse. In addition to that I have a mesh with metallnes. color. roughness and normal map which baked ok. Please, try to look on the textures I packed in file, and try to repeat the problem by downloading my .blend file. And also please try to disconnect base color texture and metallic texture and try to add any color to the Base color, and try to bake with Metallic = 0 and Metallic = 1, and you'll see that in the case when Metallic is 1 the baked texture is black, and in case when the Metallic is 0 the baked texture becomes visible and well baked.

Brecht Van Lommel commented

2019-09-13 12:32:22 +02:00

Diffuse color is not the same as base color, so you can't bake it as diffuse and expect to get the base color.

Michael commented

2019-09-13 12:37:39 +02:00

Hmm, so am I correctly understand that when I bake each texture separately, I have to disconnect all the others and turn them on one by one as I bake each texture? Otherwise, they'll influence each other?

Michael commented

2019-09-13 12:44:05 +02:00

Okay, thanks for clearing that up. It would be cool if you could bake Base Color separately in Blender, and it would be cool if you added the ability to bake Metallic map, because now many people bake Metallic map by connecting Metallic textures in Roughness, it's not difficult, but not so obvious.

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Problem with Diffuse map baking and with Metallic map #69826