0:36 in the video, "all based on path tracing". Easy tell: the soft shadows, volumetric lighting, indirect lighting, complex shaders. Some of it could probably

0:36 in the video, "all based on path tracing". Easy tell: the soft shadows, volumetric lighting, indirect lighting, complex shaders. Some of it could probably be faked, but it's trivial with path tracing. About speed: it's still very hard to do real-time, but it seems like denoising algorithms are getting good enough that it's getting doable. Keep in mind that it is a game, so small graphical glitches aren't that big of a deal.