UDK - Shadows Disappeared

Silth

Hey guys,

I'm trying to light a scene in UDK at the moment, everything is pretty much built out of static meshes but there is some BSP.

In the image here, I place a basic light by pressing L and Left Click and move it into location, there is shadow being cast.

When I built the lighting or build all, all shadow casting is gone. Any idea?

Thanks!

ambershee

Lightmap resolution is too low.

Adam L. Gray

Are you using ligtmass?

In that case it's prolly bounce light washing out and lighting up all areas. While as the light before the build is dynamic.

Silth

@ambershee - I've tried upping the Lightmap resolution to 2048 on the ground the shadow is being cast on, and the items casting the shadow. There has been no luck with it.

@Adam - I have turned GI on and off, the image above is with GI off.

thanks!

Calypso75

What do your light settings look like? The U light icon means the light has had some settings tweaked. If you did it the way you said, hold down L and left click, it should place a static (S) light with the default settings.

Silth

Calypso75 wrote: »

What do your light settings look like? The U light icon means the light has had some settings tweaked. If you did it the way you said, hold down L and left click, it should place a static (S) light with the default settings.

Woops, that's true. I turned on Dynamic Shadows to no effect. But I did just generate unique UVs for it, and that seems to be working at the moment. I'm going to test it on a couple more meshes and see what happens.

Thanks

ambershee

Ah yes - you will need a unique UV set in order to encompass lightmaps, important not to forget that

Silth

Lol yeah... Learn something new every day.

So I've gone in and made unique UV sets, and increased the map sizes ranging from 64-1024. My build time has increased significantly. What is the recommended map size for light maps?

ZacD

Always use the smallest you can, get away with. It really depends on the size of the props and detail of the shadow. You can always make them bigger in the final bake.