Blogger sultim_t showed a teaser for a Half-Life mod that improves the graphics of the game using ray tracing technology. The author managed to achieve realistic global illumination, update the reflection and refraction effects of light, and also get more natural shadows on the textures.
The author did not name the exact release date of the mod, but judging by the video, the release will take place in 2022. What will be the new system requirements for the launch of the mod is unknown.
In the past, sultim_t has released similar videos for other older games. On his YouTube channel you can find Serious Sam gameplay recording, where ray tracing technology is also applied. This mod is available for download on Github.