There is no such per-object interface yet. However, you may move the object to some of immediate Z-Layers (like Graphic3d_ZLayerId_Top or a custom one), as they do not contribute into filling a shadowmap.
Archived discussion
Disable shadow casting for AIS_Shape
Hi,
I have a scene with AIS_Shape's which cast shadows. And I want some of them (e.g. shapes created from wires) do not cast shadows. Is this possible to do in opencascade?
Kind regards
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