https://wccftech.com/cd-projekt-red-adding-ray-tracing-to-cyberpunk-2077-proved-quite-challenging-game-will-run-on-directx-12-only/

CD Projekt RED Lighting & FX Art Director Jakub Knapik and Lead Graphics Programmer Marcin Gollent were recently interviewed by German website PC Games Hardware to discuss some technical aspects of Cyberpunk 2077.

As expected, the centerpiece of the conversation was ray tracing, with Knapik explaining the game's usage while adding that the implementation proved to be quite a challenge in the context of a massive open world game like that featured in Cyberpunk 2077.