I’m creating a very large Archviz scene and the light build takes a very long time.
Am I correct in presuming a single lightmap resolution of 1024 (i.e. 1024x1024 = 1,048,576) equals to having 256 lightmaps of 64 (i.e. 256(64x64) = 1,048,576).
Now imagine a single floor piece.
Does this mean I would get better performance and quicker light build times if I broke the floor into 100 smaller pieces (each having 64 lightmap) instead of having it as a single object with a 1024 lightmap resolution?
Currently in my scene I have:
283 SM with 256 lightmap
138 SM with 128 lightmap
800ish SM with 64 lightmap
1100ish SM with 32 lightmap
100ish SM with 16 lightmap
So if I was to break down the 283 SM into (lets say) 600 different pieces
and broke the 138 SM into (lets say) 250 different pieces
with all new pieces having 64 lightmap
Would this mean I could get similar lighting results at a considerably lower build times?