Lightmap problem

[puzzlekings]

Hi Jake

I am seeing this error when I create a meshbuilder and also when I save the curve as a game object

Primary UV set on CurvyMesh is incorrect and the secondary UV set is missing. Lightmapper needs UVs inside the [0,1]x[0,1] range. Skipping this mesh...
Choose the 'Generate Lightmap UVs' option in the Mesh Import Settings or provide proper UVs for lightmapping from your 3D modelling app.
UnityEditor.DockArea:OnGUI()

As a result I cannot get the curv object to receive any shadows when lightmapping.

Is there anything I can do here?

cheers

Nalin
 

[Jake]

To add the UV2, please edit SplinePathMeshBuilder.cs, in Refresh() add a line "mMesh.uv2 = new Vector2[mVerts.Length];" right after "mMesh.uv=mUV;" - that should do the trick.

If the UV's are beyond 0:1 you've scaled the material, right?

[puzzlekings]

Thanks Jake,

Unfortunately it did not seem to work, as it led to darker outputs on the Curvy Meshes and still no shadows unfortunately.

If the UV's are beyond 0:1 you've scaled the material, right?
Well, all I did was set the UVMode to Absolute so I could get some blue stripes on the road, 

To illustrate the problem, I have attached two screenshots (real-time and lightmapped), and on each I have two sets of roads/paths - on the left is with the additional line of code and on the right is without it.  I have also put in a Unity cube across the scene to make sure it can capture the shadows which is does manage to do.

Any thoughts or ideas would be much appreciated.

cheers

Nalin

[Jake]

Tried this and I had to set UV mode to "Stretch V" (as well as the mesh to static), then it got lightmapped (even without the UV2 code).

[puzzlekings]

Thanks Jake,

Unfortunately I tried this approach and still no lightmap shadows

So for me Stretch V and with or without the UV code I had no luck

N

[Jake]

Did you have detached the Mesh and then set it to Static?

[puzzlekings]

Yeah tried that, but it did not work for me.

Maybe I am missing something else?

Do you have a test project at all that you can upload and I can examine?

br

Nalin

[Jake]

I did the following:

• Choose the Basic/MeshBuilder2 example scene
  
• Enable shadows for the Directional light
  
• Disable the animation for CurvySpline.CP001
  
• Select the CurvyMeshPath
  
• Make it static
  
• Set UV mode to "Stretch V" and Tiling to "1" (you'll need to do the tiling in the material then)
  
• Open Lightmapper and click on "Bake Selected"