Lightmap UV wrapping error
I recently got this error when working on a mesh, I've checked my UV unwrap both in 3ds max and in the engine for anything out of the 0-1 bounds but everything looks fine, I suspect it may be a mesh problem since other things I have unwrapped do not cause this error, although I have no idea what the cause, I've already looked over it for any obvious problems.
I've uploaded the mesh here:
The problem occurred not long after making modifications to the front of the house, (the area with the overhang) if anyone can take a look that would be great.
asked Mar 31 '14 at 05:17 PM in Rendering
I was experiencing the same problem and I even didn't think about the lightmap index because in UDK it was always channel 1 by default. Why does U4 apply channel 0 from time to time? Is it just a bug or it depends on something when export? Thanks.
answered Jun 05 '14 at 01:06 AM
I am not sure what problem you are referring to, but just an advice - pack your lightmap UVs tighter. You are wasting a lot of space there. What you can to is:
1) Select your house and apply Unwrap modifier 2) switch to channel 2, and answer "move" when asked 3) Go to face subobject and Ctrl+A to select all 4) Go to Mapping > Flatten. Use value of around 0.02-0.1 for padding, click ok. 5) Now your uvs should be neatly packed within 0-1 area with some padding 6) Collapse back to Editable mesh and reexport your object
Hope this helps.
answered Mar 31 '14 at 05:24 PM
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