[227i] Multi-Threaded BSP builder

[.:..:]

227i only!
This is an experiment for multi-threaded BSP rebuilder. It works quite efficiently  as it speeds up build time by a lot if you have a multi-core CPU.

It only builds BSP and optimizes geometry (does not compute lighting nor paths yet).

All you have to do is to add EditPackages=MapBuilder to Unreal.ini in correct section. Then in editor click the "Multi-core map rebuild." option on the left (uses invert selection icon). Don't get afraid as it will quite literally lock the computer (even mouse movement will freeze) at some point during build as it makes every CPU core work to 100 %.
It has no BSP build options yet, it just defaults to most optimal build options.
After that you need to use regular light/paths builder.

Download from here: www.klankaos.com/downloads/MapBuilder227i.zip

EDIT: To some comparison, when testing with one of the largest Firestorm maps. Rebuilding BSP with 227i editor took me 5:04 minutes to rebuild, but with this tool it rebuilt it in 1:32 minutes. (I have a quad core Intel i5 processor, 3.5 GHz)

[yrex .]

Indeed, it's twice as fast on a dual-core CPU. And no, it didn't lock up my PC or mouse.

I think I found a bug. If you open any map and rebuild it twice in a row, this happens:

---------------------------
Critical Error
---------------------------
General protection fault!



History: TestLights

[.:..:]

Yea I noticed, missed to cleanup a variable after build. I updated the link to new code (also fixed a possible data racing problem).

[Dr.Flay™]

Why not a version for 227j ?

BTW. Awesome !

[Buster]

Yeah, this is pretty useful, especially when maps are getting more complex. A pleasant result of all the goodies that come with 227.

[AlexNitro44]

Seems pretty useful - I'll have a shot of it when I get chance. Lighting is the one area of the build process that really needs this sort of work, but BSP building is a nice improvement too!