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I need to know what changes the lightmap size.

For example what changes the lightmap from being 2*1024*1024 to 4*1024*1024 - having larger textures or having larger quads (having more models) or having more lights or does it depends on something else?

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  • \$\begingroup\$ Have you messed around with the Lightmap settings? There's a field called Lightmap Size and another one called Lightmap Resolution, if you play and get used to them, you should be able to control the lightmap's size easier \$\endgroup\$
    – Tom Tsagkatos
    Commented Aug 29, 2018 at 14:04

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