Feeding a lightmap through the subsurface channel?

[Evgeni_Popov]

I think this post should help you:

Lightmaps / Shadowmaps / Tiled Textures

@theblackneko, you can certainly create a shadow map for a material using tiled textures utilizing a second UV set. You would have the tiled UVs in the first set and the unique unwrap in the second set which the shadow map is assigned to. In Babylon.js, you can assign light maps to PBRMaterial (which would be what you would have importing a glTF). The way to assign the lightmap to be a shadow map is to set PBRMaterial.useLightmapAsShadowmap = true and then assign the UV set with PBRMaterial.lig…