Lightmaps and shadows, other lighting questions: Page 2

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Lightmaps and shadows, other lighting questions

Calinou

Do you know any workaround for baking lightmaps for LODs?

Lightmap isn't baked for hidden objects, so all LOD meshes must be visible in editor. This causes a second issue - LOD meshes are overlapped by themselves, so lightmap generated for them is wrong (they're mostly in shadow).

Unfortunately, this is a hard problem to fully resolve. This is the best workaround I can think of right now:

Set the Cast Shadow property of all LOD meshes to Off, except for the lowest LOD level (which should be slightly smaller than other meshes to avoid overlapping).
Make all LODs visible.
Bake lightmaps.
Set the Cast Shadow property to On again.

marcinn

Thanks! Works pretty well.

It looks like there is no necessity to re-enable shadows on your "bakedlightmap-add-shadowmask-3.x" branch.

Calinou

It looks like there is no necessity to re-enable shadows on your "bakedlightmap-add-shadowmask-3.x" branch.

You need to re-enable shadows if you want the lightmapped object to cast shadows onto dynamic objects. Keeping shadows disabled is slightly faster, but it will look worse if dynamic objects can get under the lightmapped object's shadow.

marcinn

Thanks, I forgot about this.

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