https://www.overclock3d.net/news/software/unreal_engine_4_s_latest_preview_supports_real-time_ray_tracing/1 Epic Games' Unreal Engine 4 will soon receive a major update, one which will integrate real-time ray tracing into the engine, enabling a wider range of developers to utilise Microsoft's DXR (DirectX Raytracing) API and Nvidia's RTX hardware.
Thanks to the powers of early access, developers are now able to start using Unreal Engine's ray tracing enabled version starting today, with Unreal Engine version 4.22.0 being available from the Epic Games Launcher starting today. This new version of Unreal Engine 4 will support raytraced soft shadows, reflections, ambient occlusion, real-time global illumination, translucency, a Denoiser solution for shadows, reflections and Ambient Occlusion. A full GI path tracer is also available to help developers create ground truth reference images inside Unreal Engine 4.
Maybe this will help game developers introduce ray tracing into their future games.