Attribute mismatches (points, faceVertexIndices, faceVertexCounts) between Houdini 20.5.613 and OpenUSD 24.11 on two meshes

[mistafunk]

We found two meshes where basic attribute sizes show mismatches compared to what Houdini 20.5.613 displays. It is likely that the bug is in our code, any hints are welcome. Our code directly reports the size of the UsdAttribute arrays (after .Get()).

Our code shows 318 points while Houdini shows 1193 points.

-- converting UsdGeomMesh at: /root/remi/body_M_hrc/GEO/body_M_hrc/flag_M_hrc/flag_M_geo
    points attr C++ type: VtArray<GfVec3f>
    num points: 318
    num indices: 4448
    num faces: 1112

Our code shows 7046 points, 111552 indices and 27888 faces while Houdini shows 5858 points, 23136 indices and 5784 faces.

-- converting UsdGeomMesh at: /root/stoat/outfit_M_hrc/GEO/cloth_M_hrc/Sweater_M_geo
    points attr C++ type: VtArray<GfVec3f>
    num points: 7046
    num indices: 111552
    num faces: 27888