UDK Lighting issues

CJE

Hey guys,

I'm working on a block-out of a basic environment and am trying to setup some basic lighting, but I'm having an odd issue where my preview/build lighting light is way different from the lighting I get in-game.

If I build lighting, I get the normal lighting I want.

If I try to go in-game just after doing build geo, then build lighting separately, It tell sme to rebuilt lighting still.


So once I rebuilt ALL, I get a vastly different lighting setup, it appears very blue.

I only have 1 point-light in the scene.

Scizz

if your questioning about the blueish tint in the first picture, that's because of light mass, but do u even have a light mass importance volume in the map?

CJE

I do have a lightmap importance volume, it's encompassing the room.

Scizz

my only recommendation is to build all every time. i hardly use build just geometry unless im in unlit mode working on bsp brushes.

LMP

The blue is bleeding into the lighting from the UDK default material that everything is currently on, as well... you don't have any materials on this so... you're gonna get strange blue in your lighting.

CJE

More wonderful UDK issues, anyone know whats going on here?

haiddasalami

Increase light map resolution? If your wondering about those blotchy shadows

CJE

Yah the blotchy shadows shouldnt be happning tho, the LM resolution is 512, and it has a good unwrap.

haiddasalami

Is that on production quality build?

CJE

Preview Quality. No difference on Production.

CJE

Going back to March's build fixed that issue, but now I have a new one and I've been pulling my hair out trying to figure out what's wrong.

I really need some help here from you UDK experts who might have seen this before.


I've build a simple modular wall piece 96x96 with a tillable texture. It's on the grid and everything snaps together perfectly.

I placed 1 static mesh and copied it several times to form the wall.

The Static mesh has proper UV's and a proper lightmap channel with plenty of padding for mipping. I'm using a 256 lightmap resolution.

The Material looks fine on a BSP.

Preview looks fine, but as soon as I render Lighting I'm getting insane coloration differences between the modular peices, as well as lightmap seams between then when viewed from certain angels.

Each side has it's own smoothing group,and the normals are orientated correctly.


Does anyone have any idea what is going on here?

Michael Knubben

To me it looks like bounce light from the blue and white tiles, so basically the same issue as in your first post. Don't know what the seams are about though.

CJE

yah its the lighting across the segments that is really frustrating me, in lighting view mode you can really see it, every block has a different lit value, almost like there is no lightmap going on.

Oniram

yeah. ive made it a habbit to ALWAYS get rid of the blue checker, as it does bounce light onto your objects. one thing ive noticed with a recent scene is that any emissive light will show a seam between modular meshes.

by emissive light i mean meshes or materials that use their emissive to create static lighting.. which the blue checker floor does.

you can see what im talking about here
http://1.bp.blogspot.com/-D_tcM7nR2r4/TX_ZqEmfd0I/AAAAAAAAAG4/s6qoS6HfsYc/s1600/ScreenShot00000.bmp

and here is an example of without the checker but still emissives
http://3.bp.blogspot.com/_YJIZwmRNLAo/TTdN_b8YuDI/AAAAAAAAACY/nBfcdek4Fg4/s1600/shift02.jpg

the checker is showing a seam between each wall peice. also the lights on the wall have UseEmissiveForStaticLighting checked on, which also causes this to happen. ive generally noted that from now on ill try to use as much lights as needed instead of emissive lights, but just having lightmass settings turned down on them as to not take up too many resources.

here is an updated version of the lighting im working on. there is still a bit of discoloration but i think thats due to the fact that almost everything in the scene has a reflective texture in it, which bounces light more.

only things emissive in there are the lights on the wall and the globe thing

http://img.photobucket.com/albums/v666/Oniram/TestLevel.jpg