Authors blog post: http://brechpunkt.de/q2vkpt/

UPDATE-19.03.19: GTC 2019 Demo Walkthrough (ultrawide)


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DF's take on it:


TLDR: Requires a GPU with VK_NV_ray_tracing extension support (so at this moment: Nvidia RTX2k series card)
DOWNLOAD: https://github.com/cschied/q2vkpt/releases