Otoy, recently in the news for its upcoming cloud-rendering technology, has posted a very cool new demo for Brigade, its real-time path tracing game engine.
Like Grand Theft Auto with path tracing… kinda
The video shows a compilation of recent technical tests, beginning with a city scene that looks bizarrely like a scene from a Living Dead movie re-enacted by a crowd of multi-coloured crash test dummies.
According to Otoy product manager Sam Lapere: “We love playing GTA, so we set out to make a real-time path traced GTA-like demo [with] hundreds of cars and pedestrians … all path traced in real time.”
“After doing successful tests with hundreds of moving cars and characters in a city environment, we added physics, which slowed things down massively so we had to settle on just one car.”
Even so, Brigade’s real-time performance is impressive: the scene contains 750 instanced characters with 30,000 triangles each; while the environment contains 600,000: a total of 22.5 million triangles.
The second demo, which shows colour bleeding, ups the ante, with 16,384 instances of an 846,000-triangle city, making a total of 13.8 billion triangles.
…but still noisy
The output is undoubtedly noisy as the image resolves, particularly in the final interior scene, and there’s clearly a lot more work to be done before Brigade becomes a viable tool.
But it’s still extremely beautiful, to the point that it’s often hard to tell that it isn’t photographic – an impression that the noise, curiously, almost heightens.
And as Lapere notes, “time and time again, [Brigade] renders monstrously fast”.
The older demos are also worth checking out: you can find them on Lapere’s blog via the link below.