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ScanMountGoat / xc3_lib

Xenoblade Chronicles file format and rendering libraries
MIT License
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xeno1/chr/pc/pc0101305.wimdo glTF crashes in UE5 #20

Closed nanogram closed 3 months ago

nanogram commented 3 months ago

Tested generated gltf files with https://github.khronos.org/glTF-Validator/ & they come back with a bunch of errors. Am trying to debug why specific files, DE's pc010305 for example, seem to crash the Unreal 5 editor (something about EXCEPTION_ACCESS_VIOLATION reading address 0x00000001ffffffff), while other files don't have that issue.

ScanMountGoat commented 3 months ago

Does the gltf file work in Blender? Not all validation errors are critical errors. Not including the min/max for position attributes is a validation error, for example. I'll try and export that specific file and see what may be causing compatibility issues.

ScanMountGoat commented 3 months ago

This should be fixed now if you build the latest commit from source with cargo build --release. The crashing is fixed for me with Unreal Engine 5.2.1.

nanogram commented 3 months ago

Not sure if this is part of this or just an unreal importer issue, but I've also noticed that model normals/smoothing groups don't seem to import properly. This is noticable on shirtless models like pc010102 iirc.

ScanMountGoat commented 3 months ago

There may be something you need to enable in the import settings in Unreal Engine. I would also check if this happens on glTF sample models. If you think the problem is xc3_gltf related, please open another issue.