Is it possible to hide objects for lighting (lightmass)?

Hi,
I urgently need to hide objects for lightmass.(white reflectors, which cover objects and producing unwanted shadows with sunlight) Is this possible? I hope… Otherwise I will have a huge problem.

Best regards, Andreas

Hi,

There is no longer the option of using light channels in UE4 since we now have a deferred render path. However, you can get by that somewhat by using levels.

If you go up to “Window” in the Menu bar and then select “Level” another window will pop up. This will indicate a Persistent level. Under that go to Create a New Level and set up the multiple levels you will need. Each level can have it’s own assets, layout, and lights. When you go to build lighting you would simply build each of this levels with only that one visible (or if you need other assets form another level you want the lighting info baked into as well visible)

As a side note when Any lights you have in the Persistent Level will bake into every level under it.

Epic uses this structure on nearly every project in our Marketplace. (Ie. Strategy Game and Vehicle Game use this to separates lights in to their own level, VFX in another, Level Geometry, etc)

With this you should be able to setup lights for your specific levels and bake from that to keep them from be affected by other objects. It’s a little bit of setup but the possibilities are there.

Thanks!

Tim

Hi Tim,
thank you very much for this information.

Best regards, Andreas