[Explained] Render defects on custom objects from Mesh Editor : ?

[GeP]

Hello,
I encounter rendering defects on custom items i've created in the Mesh Editor. It's only standard blocks modified, and ingame textures applied. It seems it even affects nearby standard blocks shading...





It's less obvious on illuminated parts, but still there if you look closely :



Any idea why this happens and how to correct / avoid it ?
Thanks in advance.

[Florenzius]

There's no way to correct that. It appears at especially heavy maps with lots of shadows to be applied on the lightmap. It's baking a certain amount of Ambient Occlusion on a texture that is not bigger than 4096px (afaik), so the more content it gets, the less precision will be the result. You could try to avoid very heavy/complex shapes that could potentially generate a complex AO-texture, but essentially keeping the map light and small will "fix" those spots.
It's also the case with default blocks btw, not necessarily the fault of your items. x)

[GeP]

Oh ok.
It was a "big heavy" map, indeed.
Glad it is not my items, so i can share them now. :)

Thank you.