After imported sketchup with datasmith. Then i notice if my camera far, the shadow disappear for this object. The problem is surface cache. if i move away, this object disappear. Any solution?
Yes, but it may be a strange one.
Go into the details panel for the mesh and look for something along the lines of ‘emissive light’ or such. Lumen scene culls data agressively, but it obviously doesn’t want to cull important emissive objects, becuase that would cause major lighting discontinuity. By telling lumen that it’s an emissive object, you’re preventing lumen for culling it for way further than it otherwise would.