Exported FBX file has incorrect albedo colors (linear/gamma issue) #93174
Labels
No Label
Interest
Animation & Rigging
Interest
Blender Cloud
Interest
Collada
Interest
Core
Interest
Documentation
Interest
Eevee & Viewport
Interest
Geometry Nodes
Interest
Grease Pencil
Interest
Import and Export
Interest
Modeling
Interest
Modifiers
Interest
Nodes & Physics
Interest
Pipeline, Assets & IO
Interest
Platforms, Builds, Tests & Devices
Interest
Python API
Interest
Rendering & Cycles
Interest
Sculpt, Paint & Texture
Interest
Translations
Interest
User Interface
Interest
UV Editing
Interest
VFX & Video
Meta
Good First Issue
Meta
Papercut
Module
Add-ons (BF-Blender)
Module
Add-ons (Community)
Platform
Linux
Platform
macOS
Platform
Windows
Priority
High
Priority
Low
Priority
Normal
Priority
Unbreak Now!
Status
Archived
Status
Confirmed
Status
Duplicate
Status
Needs Info from Developers
Status
Needs Information from User
Status
Needs Triage
Status
Resolved
Type
Bug
Type
Design
Type
Known Issue
Type
Patch
Type
Report
Type
To Do
No Milestone
No project
No Assignees
3 Participants
Notifications
Due Date
No due date set.
Dependencies
No dependencies set.
Reference: blender/blender-addons#93174
Loading…
Reference in New Issue
No description provided.
Delete Branch "%!s(<nil>)"
Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?
System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2070 with Max-Q Design/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.47
Blender Version
Broken: version: 2.93.6, branch: master, commit date: 2021-11-16 14:54, hash:
blender/blender@c842a90e2fWorked: none? not sure
Short description of error
Exporting the attached blend file to FBX results in an incorrect albedo color (too dark) in the resulting file.
The result file can be viewed in e.g. Unity or Windows 3D VIewer
In Blender
In Windows 3D Viewer (the incorrect triangulation is a Windows 3D Viewer bug)
Exact steps for others to reproduce the error
Download LightGreenFloor.blend
Note light green color
Export to FBX
View in Windows 3D Viewer or Unity or ...
Note incorrect dark green color
Create a new scene in Blender and import the file
Note incorrect dark green color (so import seems to still interpret correctly)
Added subscriber: @herbst
#87515 was marked as duplicate of this issue
Closed as duplicate of blender/blender#53209
Added subscriber: @OmarEmaraDev
Your assessment is correct about gamma. However, FBX files do not specify any color space information and the specification doesn't enforce one, so this is left up to the software.
The FBX exporter exports the color directly as
[ 0.237069, 0.401970, 0.114849], which is the correct linear color in Blender. An option to control this could be added, but this is considered a TODO and not a bug at the moment.See Bastien's comment here https://developer.blender.org/T53209#468514.
Added subscribers: @E_Toma, @rjg