Microsoft just announced ray tracing extensions of Dx12 and Nvidia has announced their own hardware accelerated real time ray tracing. They've been working up to this for a while, with MS planning on making ray tracing and VR central to their next generation Xbox, likely to use an AMD ryzen chip modified for the purpose. That's because they both require more powerful computers, with real time ray tracing merely adding realistic lighting to any existing rasterized engine. Otoy has already added real time ray tracing to cellphones, but the bigger the display and the higher the resolution the more power it requires. Adding ray tracing to rasterized engines requires the developers to tweak them a bit to make it look right but, once popular, we should see a variety of older games coming out with the option. This is all new stuff, but likely they have already been working with the video game developers and we should see games coming on the market soon, capable of real time ray tracing, or global illumination as its also known. It requires roughly 30% more computing capacity, depending on the program.