puts "========"
puts "278: Data Exchange, Fail to export to GLTF with draco buffer index out of bounds"
puts "========"

vclear
vclose ALL
Close *

set aTmpGltf "${imagedir}/${casename}_tmp.glb"

ReadStep D [locate_data_file "bug31670_russian.stp"]
XGetOneShape s D
incmesh s 0.1

XNewDoc D
XAddShape D s

WriteGltf D "$aTmpGltf" -draco -mergefaces

ReadGltf D1 "$aTmpGltf"
XGetOneShape s1 D1
checknbshapes s1 -face 11 -compound 10 -shape 21