Why does DirectionalLight3D display in my scene, but OmniLight3D not?

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I have a single scene with a single mesh with a single material with a single Albedo color.

If I drop a Camera3D and DirectionalLight3D into my scene and run it, the mesh displays.

If I instead use a OmniLight3D, the mesh is black and the scene is dark. I've tried fiddling with all the energy options but they do nothing.

What's wrong please?

Zini

signup Maybe the range of the OmniLight is too low? If the light of can't reach any object it will not show up in the scene.

Jesusemora

signup if you don't have a directional light in the scene, the engine will use an imaginary directional light to make the scene brighter. this light and environment added by the editor will not appear in game, you have to add those yourself.

Yan

If the Omnilight is inside the mesh its light won't hit the visible surfaces.

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Thanks @Zini. You have to adjust the range of an omnilight or it's invisible. Works now.

Also, I then remove the lights and added a WorldEnvironment node with white ambient light at full energy. Scene is still dark. Why please?