I am writing a 3D mesh in Godot engine, and want to make it have a shadow-effect on the surface.
I set the mesh - GeometryInstance - Use In Baked Light: on. Then, added a DirectionalLight on the right-up corner of the scene, with Light-Shadow: enabled.
But there is no shadow on the mesh. If I try a built-in mesh, for example, a cube, the cube will show shadow with this light source.
What's wrong with it? Thank you!