Importing big models are slow

[fxgenstudio]

Import a 256x256x128 model take more than 10 minutes to process.

One optimisation that can be done is to precalculate normals per faces into a table and don't use "generate_normals".

level1_1.zip

[fxgenstudio]

I added traces with time in ms for each steps with "monu1.vox" importation ...

Why combine_data is called 3 times ?

Importing: res://monu1.vox (scale: 0.1, file version: 150, greedy mesh: False)
num_models 1
Elapsed VoxFile Read:574 ms
Starting Generate Mesh...
combine_data size: 156942
combine_data size: 156942
combine_data size: 156942
Elapsed unify_voxels:3067 ms
Elapsed Gen mesh :3685 ms
Elapsed Gen surface :279 ms
Total Elapsed Generate Mesh:7052 ms

[CloneDeath]

Thanks! Off the top of my head, I believe it is called once per axis (x, y, and z).

This gives me enough data to start. I'll take a look tonight, and let you know if I have questions.

And I agree, 10 minutes is unacceptable.