Hidden materials via variants with (blendMode, alphaFactor) still cast/receive shadows

[rsax]

Problem
When hiding materials via alpha (alphaMode=BLEND, alphaFactor=0), the geometry still casts shadows and may receive shadows.

Result
“ghost” shadows remain visible even though the material is transparent.

Goal
When material is considered hiding disable cast/receive shadows for all meshes hided.

[danilokrulj]

I think you need to call this after hiding the material/geometry.

modelViewer.updateShadow();
modelViewer.queueRender();