How Housemarque engineered Resogun for 4K
The story behind the beautiful ultra HD PS4 Pro update.
If you own a PlayStation 4 Pro console and you've not added Resogun to your collection, you're missing out on one of the best showcase titles available for the system. Developer Housemarque has delivered a brilliant 4K presentation and vibrant HDR, while retaining a locked 60fps during gameplay. It's the same Resogun gameplay we've loved since launch, but beautifully retooled for the new generation of ultra HD displays. Essentially, it delivers the full promise of the Pro hardware where so many titles have come up just a little short.
It also scores big points in delivering what pixel-counts and extreme screenshot zooms seem to confirm as a native 4K presentation. Only it isn't. Housemarque uses a blend of techniques to deliver an ultra HD framebuffer that looks as good as the real thing - and the precision of it certainly had us convinced that it was the real thing.
"If by native 4K you mean 3840x2160 frame buffer - yes, that is the case. We used PS4 Pro's checkerboard rendering," explains Housemarque's engine architect, Seppo Halonen. "It was the second approach we tried and everything seemed to run fine with it so there was no need to try anything more after that. On top of this, there is our ultimate post-processing pass that is done at full 4K that processes enemy outlines and chroma split and a little bit extra on top of that, giving the game that final look."
One of the reasons we approached Housemarque about the PS4 Pro patch for Resogun is simply because the results we were seeing here were so good that we had to find out just how they managed to do it. Based on the incorrect assumption that it Resogun was resolving a native presentation, Housemarque had somehow delivered the same performance with 4x the pixel count on a machine that is 'only' around twice as fast as the standard PS4. The maths didn't add up, and even with the revelation that the developer is using a checkerboard solution, the identical performance we see is still quite an achievement. Even the end-of-level apocalypse effects - which do see the frame-rate drop beneath 60fps - reveal identical performance on both PS4 consoles.
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Yep, I'm not suprised. Housemarque is awesome