Correct tangent generation#1

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watlok wants to merge 3 commits intowrapperup:mainfrom

watlok:corrections

Commits on Dec 21, 2025

See line 612 in mikktspace.c
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Correct bitangent generation. See line 986 in mikktspace.c
watlok
committed
Could generate incorrect tangents and caused sign flip on final tangent.xyz result. See line 995 in mikktspace.c
watlok
committed