Procedural mesh + Light propagation volume

Development Rendering
1

Hi all,

Is there a way to make new feature ProceduralMeshComponent (added in UE 4.8) work with GI ? I made some test with Light Propagation Volume without success (procedural mesh receive indirect light from static mesh but don’t prapagate light to others).

ErrorLPV.png
ErrorLPV.png1170×604 393 KB

(Floor + Ciling = ProceduralMeshComponent / Plane + Cube = Static Mesh Component)

So have i to bring some modifications to source code (class ProceduralMeshComponent) or is there an easy way to make it work ?

Thanks for your help.
Matt

2

Have you considered DFAO/GI yet?

3

Thank you for your answer.
Unfortunatly DFGI use Distance field mesh that is precomputed, no way to generate it at runtime.

My procedural mesh is generated at runtime with the following code :

[FONT=Courier New]Normals.Empty();
Tangents.Empty();
UKismetProceduralMeshLibrary::CalculateTangentsForMesh(ListMeshData*.Vertices, ListMeshData*.Triangles, ListMeshData*.UVs, Normals, Tangents);
mesh->CreateMeshSection(i, ListMeshData*.Vertices, ListMeshData*.Triangles, Normals, ListMeshData*.UVs, ListMeshData*.VertexColors, Tangents, true);

mesh object is UProceduralMeshComponent.