I'm facing an issue with my Blender file, which features a single character with three materials: mouth, eyes, and general (body + skin). Each material consists of three nodes: Material Output, Principled BSDF, and Image Texture.
However, when I convert it to FBX for use in Mixamo, only a few areas have the correct textures, and the rest appears black (I've ensured the path mode is set to "Copy" or "Embed Textures" during export).
Similarly, when I convert it to GLTF (GLB file) for use in Godot, only a few areas have the correct textures, and the rest appears black.
When I open the FBX using the "3D Viewer" program, it looks fine.
However, when I open the GLTF (GLB file) using the "3D Viewer" program, it appears broken.
here a preview capture that might help in troubleshooting this issue.
Could you please provide assistance in resolving this matter?
Thank you in advance for your help.