Faster object tree building (instancing)

[OnoSendai]

Hi all,
I sped up the object tree building, it's 6x or more faster now.
Here are some scattered Lucy models to demonstrate:

I also fixed the triangles count in the UI so it could show the total number of triangles correctly

Num instances: ~3.8 M
Num triangles per instance: ~28M
Total number of triangles: ~106 trillion triangles

Scene build times:

Lucy scatter test
==============
Old (v3.8.26)
----------
Finished building tree. (Time taken: 35.209 s)
Finished initialisation (Time Taken: 68.02 s)

New (v4.0.x)
-------
Object tree build done. (Time Taken: 5.334 s)
Finished initialisation (Time Taken: 25.40 s)

[Juju]

some speed-up that is

[CTZn]

Oh yeah !

[Oscar J]

[pixie]

I can smell a 4 being cooked from afar! xD

[zeitmeister]

Oh holy moly!!!


Cheers, zeiti

[Zom-B]

Awesome, faster object tree building + your faster subdiv will kick in nicely for me, thanks a lot for that!

[OnoSendai]

19 M instances.

[Oscar J]

Would be fun to use Lucy as grass in an arch viz shot just to see if the client notices anything.

[zurkdahool]

crazy and amazing! very nice! btw.: thank you for the shot

[zeitmeister]

Would be fun to use Lucy as grass in an arch viz shot just to see if the client notices anything.

ROFL!!!


Cheers, zeiti

[Zom-B]

19 M instances.

I'd like to see how far this can be pushed with lets say 32GB of RAM in a system

[Oscar J]

Yeah, was just saying. Would be cool to hit a quadrillion!

[OnoSendai]

19 M instances.

I'd like to see how far this can be pushed with lets say 32GB of RAM in a system

That's already pushing the RAM quite far (on my 32GB system). I'll try and optimise mem usage a bit and get to 1 quadrillion

[OnoSendai]

Did some more optimisations:

Object tree build done. (Time Taken: 4.027 s)
(was 5.3s in the original post above).

Think I need to stop now...