FBX exporter does not properly pack texture used in material if the texture node is not directly connected to the bsdf #105010

New Issue

T-112 · 2023-11-17T18:49:55+01:00

T-112 commented

2023-11-17 18:49:55 +01:00

System Information
Operating system: macOS-13.6-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M1 Pro 1.2

Blender Version
Broken: version: 4.0.0, branch: blender-v4.0-release, commit date: 2023-11-13 17:26, hash: 878f71061b8e
Worked: (unknown)

Short description of error
It seems that if the texture used is not directly connected to the Base Color of the PrincipledBSDF node, FBX export will not include the texture (even when set to copy and packed). My example doesn't show this, but when using the GLTF importer, it will sometimes create a material node tree that includes a Color Mix node, which is actually how I ran into this problem in the first place.

Exact steps for others to reproduce the error

Download sample gltf from PolyHaven: https://polyhaven.com/a/gray_rocks
Import into default scene
Add a Color Mix node between the albedo texture and the Base Color socket for the PrincipledBSDF
Export FBX with Path Mode set to "Copy" and the pack checkbox checked
Try importing the FBX back into Blender (or Maya)

I originally created this issue here: blender/blender#115019

System Information Operating system: macOS-13.6-arm64-arm-64bit 64 Bits Graphics card: Metal API Apple M1 Pro 1.2 Blender Version Broken: version: 4.0.0, branch: blender-v4.0-release, commit date: 2023-11-13 17:26, hash: 878f71061b8e Worked: (unknown) Short description of error It seems that if the texture used is not directly connected to the Base Color of the PrincipledBSDF node, FBX export will not include the texture (even when set to copy and packed). My example doesn't show this, but when using the GLTF importer, it will sometimes create a material node tree that includes a Color Mix node, which is actually how I ran into this problem in the first place. Exact steps for others to reproduce the error - Download sample gltf from PolyHaven: https://polyhaven.com/a/gray_rocks - Import into default scene - Add a Color Mix node between the albedo texture and the Base Color socket for the PrincipledBSDF - Export FBX with Path Mode set to "Copy" and the pack checkbox checked - Try importing the FBX back into Blender (or Maya) I originally created this issue here: blender/blender#115019

fbx_export_texture_bug.fbx

5.5 MiB

fbx_export_texture_bug.blend

14 MiB

T-112 added the

labels 2023-11-17 18:49:56 +01:00