Problem with wall edges (shadows)

[jricardomiguel]

Hi,

I’m new in Unreal and I’m learning and testing the best workflow for archviz.

I made the model in Revit and exported it to 3ds Max to create the UV Lightmaps. I used the “Lightroom: Interior Day Light” model of “Koola” as a basis for maintaining the light and lightmass settings. However, I can not resolve the wall joints, so I needed your help to resolve it.

Below I leave a video I made with the workflow.

Thanks.

[jricardomiguel]

@darthviper107

Your walls are just boxes that are arranged into walls, when you do that you will get a shadow on the surface where one box meets another and that shadow will bleed onto the inside where you can see it. To avoid the issue you need to make walls/floors/ceiling meet in the corners and do not extend beyond them, so interior walls should be separate from exterior walls.

Ok, I’m tested this now and the problem is the same…

[jricardomiguel]

In both images, the walls are separated because I disable the join in Revit and in joins of wall with floor it’s the same thing… And continues happening…

[jricardomiguel]

@darthviper107

Are the walls on top of the floor or is the floor cut to match where the walls are?

On top of the floor, like this:

[jricardomiguel]

@darthviper107

You need to do it like this:

When something is on top of another surface there is a shadow underneath, since the shadows are stored in an image the pixels of the shadow can’t line up perfectly where the object is so the shadow is visible around the object.

But the building is like I draw…

This is a section of building and wall/floor intersections:

[Farshid]

increase lightmap size and try again