Wanton Hubris

So I decided to take a look at multithreading QBSP since I already set up LIGHT and VIS to do it. In looking at the code, it seems Carmack set it up to fork() the process twice instead of threading the hull building. I assume this is because QBSP uses a ton of global variables which makes threading a major hassle without a lot of code refactoring.

At any rate, this worked straight away on Mac OSX once I enabled that code path. What that means is that ToeTag’s QBSP will build all 3 hulls (small collision, large collision and drawing hulls) simultaneously instead of sequentially. It’s not a huge savings but, hey, it’s something right? It was getting nasty with my remix map which now takes upwards of 30 seconds to QBSP itself. That’s been cut down to about 17 seconds now so I’m happy!

Tags: Misc, qbsp, Quake

This entry was posted on Friday, May 30th, 2008 at 7:59 am and is filed under Misc. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.