Support 10.2.0.0, User Version 1

[neomonkeus]

Migrated from sf.net

When I try to load a .nif file (Gamebryo File Format, Version 10.2.0.0), I have systematically an error : "9 Vertex not found"
The number is different if I change the input file, but no one works.
I joinded a file which contain a sample of my files.

I can provide more details :
In Nifscope I have this if I brower the blocks list :
"10 NiNode "
And in block details :
"Name=Name Type=stringValue="
And my error is more precisely : "9 Vertex weight not found"

Its a new file format for "nif.xml". I already managed to render a "triangle mess" which vertexes are forming a reasonable shape :). The skeleton is already rendered. The vertexes and their "uv"s are stored in an interleaved array in "SkinPartition" after all, known so far, fields.

Attachment - https://www.dropbox.com/sh/b1kbicqvevrskgb/AAC9718qXw1pHUpYBk-idgV_a?dl=0

[hexabits]

Copying the relevant discussion from #37 since it is now closed:

NIFs with Version = 10.2.0.0, User Version = 1
There are sample files from issue #34 (Skink.7z). I don't know which game they are from. They can't be opened with recent nif.xml. They need to enable those strange additions mentioned in #24. They have no vertexes and UVs in NiTriShapeData block but Triangles yes, so Nifskope reports errors with invalid indexes. As somebody at sf.net mentioned in #34 - the vertexes and UVs are probably stored in arrays at ends of NiSkinPartition blocks.
I have also some files from Blood Bowl game. They can be opened with recent nif.xml. They must not have those strange additions mentioned in #24.

The issue is not 10.2.0.0 support, it is that two separate games use 10.2.0.0 with a User Version == 1 with their own custom formats. There is no way to know which is which via nif.xml alone. They cannot both be described with:

<add name="" type="" ver1="10.2.0.0" ver2="10.2.0.0" userver="1" />

As they would clash. Any solution would have to be partially external to the NIF, in the parsers. We could arbitrarily increment one of the games internally to User Version == 2, we then define it as such in nif.xml. Then in the parser we have a compatibility layer which attempts to load a 10.2.0.0, User Version == 1 NIF as User Version == 2 if the first attempt fails. The same thing would be required for #37, but that involves only 10.1 vs 10.2 and so doesn't need any nif.xml changes and I closed it.

I will leave this open to highlight the compatibility layer idea for further discussion until a separate ticket is created.