(vision): fix conversion between vtk and sight meshes
Summary
The conversion between vtk
and ::fwData::Mesh
meshes seems to be broken when the mesh is colorized by cells. It works with colors by points.
Proposal
Investigate first with OgreDynamicMeshTest or Tuto04MeshGeneratorCpp, which allows to play with colors by cells. The error probably lies in the shader code or a regression in the R2VB process.