I’ve seen a few posts indicating that Enlighten either hangs during GI clustering or absorbs RAM / GI cache to compute a huge Gb lightmap for terrains. This is obviously a serious problem, and yet I have not seen any indication that this issue is approaching some solution.
Does anyone know a workaround?
I’ve been able to compute a lightmap bake for terrain in 4.6, but I’m running personal, so I don’t get static batching. Unity 5 should be able to provide both lightmap baking and static batching, but the former appears to not function properly.
Can you load a Unity 4.6 lightmap - in this case, a terrain - in Unity 5? If so, how?
@buttmatrix,
If you have a very large mesh that causes Unity to hang/crash when lightmapping, you can apply a custom set of Lightmap Parameters to that particular mesh where you set the ‘Resolution’ to be much lower than the default size of ‘1’. Try a resolution like ‘0.1’ Then select your big mesh, go to the Lighting tab, under ‘Object’, apply that Lightmap Parameter you made next to the ‘Advanced Parameters’ item (it’ll show up in the dropdown).
Once you’ve done this, try Baking your lightmaps again. If it still hangs/crashes, try setting the Resolution lower and repeat…


Hope this helps!
You might be able to but it will definitely cause errors. I do not recommend doing it.