Hi Matt, will this help? http://softimage.wiki.softimage.com/xsidocs/tangents_binormals_SettingtheDataTypeforTangentsandBinormals.htm#Rga95703
Francisco. 2013/12/4 Matt Lind <[email protected]> > I need to write a variant of ultimapper to support our proprietary > workflows, but our content (tangent space normal maps) currently uses the > softimage standard. I need to know the algorithms Softimage uses so I can > make an accurate conversion to our proprietary standards. > > > > Specifically, I need to know: > > > > - how the vectors are computed in the Tangents and BiNormal vertex color > properties > > - how Ultimapper does a tangent space normal transfer when only a Tangents > vertex color property exists on the hi res mesh. > > (eg; what assumptions does it make / what calculations > does it do to compensate for lack of binormals?) > > > > > > > > > > Matt >
