Performance Enhancements

Ello’ Zomboids and Zombettes. Some cool stuff to talk about this week!

CURRENT VEHICLES BETA

Today we released public vehicles build 38, which is a general fix/polish update while the more structural optimization work detailed below has been running in parallel. You can find the changelist here. Items of note include an improvement to vehicles clipping over characters and over each other – although to eradicate this completely will require structural work on a depth buffer, and more importantly the rewritten 3D model system that’s a part of future animation builds. This said, this build should at least see a marked improvement.

Other bugs fixed that’ve proved an irritation to testers include far more satisfying zed/vehicle collisions in MP, key loss lessening, a limitation on the threat of invisible trees and the removal of in-car 3D sound to make the sounds less disorientating.

NEXT VEHICLES BUILD

Despite a lot of work and improvement over recent builds, for a little while we hadn’t been satisfied with the performance in our vehicles beta. It was workable, and clear that testers are having a lot of fun with it, but not something we felt was good enough. As such over the past couple of weeks we’ve been working on what we feel are rather special and significant optimizations – basically going through every area of the game code and shaving off every millisecond we could, and the results have been quite profound. On our internal test PCs (fairly good set-ups) it’s now possible to obtain a solid 60fps when zoomed out at almost every point in the map, save for the mall and downtown West Point – which regardless are themselves a lot more playable now. The following video is shot in 1920×1080 and shows the improved performance we’re seeing on standard settings. Note the FPS read out in the top left. We thought about editing together pieces from different tests, however felt that cutting between them may look like sneaky editing, so have opted to use 5 minutes of uninterrupted recorded footage. https://www.youtube.com/watch?v=tQ9W5gpuErM This video is recorded in 3800×1600 and shows the sort of performance you could expect on much higher resolutions. Hopefully not that much different from 4k framerates: https://www.youtube.com/watch?v=HJLHXqNmuk4 Additionally, as you may be able to tell from the videos, we have also added support for uncapping the FPS into the game options, now the FPS has improved significantly to make use of it. Hopefully this will make those with high refresh-rate monitors happy. Internally we have hit 300+ fps when zoomed in in low density areas of the map with FPS uncapped, which is pretty nice and silky on a 144hz G-Sync monitor! We had hoped this optimization build would have been ready to release today, but when doing such deep and all-encompassing optimization that touches on many areas of the game, there are always new unintended side effects and new bugs introduced from changing the code to make it faster. Aspects of the UI suddenly become unhinged by the frame-rate, lighting refreshes go wonky etc. As such we decided to release the existing changelist of Vehicles Beta 38 and leave this until next week, when there’s a few less gremlins in the system. We hope this will then be the candidate for moving vehicles into our established IWBUMS beta as we step up plans for animations etc.

BUILDS BEYOND VEHICLES

As mentioned previously, alongside the animation systems that