CS2 Fog Of War: Server-sided anti-wallhack occlusion culling for CS2 servers

Post by [deleted] » Tue, Jul 07, 2026, 8:25 PM UTC

dvt wrote: post #28

shaokind wrote: post #22

Earlier quoted context omitted.

Valve also implemented this on CS:GO back in 2015 [0], and enabled by default in competitive servers, so I would consider it absolutely tenable (FACEIT, the platform used by competitive variants, had their own hand-rolled SMAC implementation, before using the 1st party solution, albei,t that solution was buggy). Why Valve didn't port this over to CS2, I will never know. [0]: https://www.reddit.com/r/GlobalOffensive/c…

> so I would consider it absolutely tenable Always confuses me why people speak so authoritatively on topics they aren't versed in. PVS culling is not even remotely comparable to occlusion culling, mainly because wallhacks are not relevant accross the map; in fact they are only useful when opponents are always well into your PVS range. FYI: there are also some clever ways to get around PVS culling (mostly by inferrin…

Post by ikda » Mon, Jul 13, 2026, 2:53 PM UTC

dvt wrote: post #3

This has been done before in both 1.6 as well as Source. I helped with some of these implementations back in the late-2000s when I was playing professionally and I even tried to kickstart an anti-cheat hardware solution about a decade ago[1].. spent way too much time working on some of these problems. The main issue with occlusion was slightly increased latency, visual jitter because of interpolation (especially arou…