Then you add that with all the other shading going on and what you get is a bunch of cool direct and indirect lighting effects that are making things very dynamic as the camera moves around the scene."Īs Nvidia’s prelude suggests, ray-traced global illumination (GI) is an especially expensive operation. Instead, rays are cast in random directions and the returned light information is added to color the local pixel. ![]() The process is not exactly the same as calculating reflection rays based on the incident angle. The global illumination algorithm literally casts rays in random directions from a surface point and collects light information from multiple objects intersected by the random rays. So, in the above-diagrammed GI case, the eye is looking into the bottom corner, and rays are being cast in random directions. The ball on the right-side of the above diagram could be a colored ball, and that effectively would influence the color of surfaces around it. The light that hits a nearby object will reflect and scatter off that nearby object and will color the surrounding area. In this case, RT cores provide a big boost, with RTX 2080 performing up to 3x faster than GTX 1080 Ti. In Metro, the GI process requires rays be cast per pixel, making ray-traced global illumination more performance-intensive than limited ray-traced reflections, where rays can be cast more selectively. Global illumination simulates both direct and indirect illumination in a scene. And if the sun moves or window shades open, the room’s lighting realistically changes, presenting the room in an entirely new light (literally), compared to non-ray-traced methods. In other words, the light bounces naturally, illuminating and brightening surrounding detail. You can join the discussion on Metro Exodus' PC Enhanced Edition on the OC3D Forums.“Metro Exodus uses ray-traced global illumination to render dynamic scenes with more realistic indirect and diffuse lighting that updates in real-time as lighting changes, and as events occur in the game world. ![]() PC gamers can now download Metro Exodus' PC Enhanced Edition from all Storefronts where Metro Exodus is currently available. Not only has 4A Games managed to get Metro Exodus to look better, but they have also managed to do so without increasing the game's RT system requirements. The hardware/software gurus at 4A Games have managed to get this system working at similar performance levels to Metro Exodus' original PC version with ray tracing enabled. This kind of lighting system is impossible without ray tracing. This move transforms how the game's lighting works at a fundamental level, giving the game's visual presentation an upgrade beyond anything that PC gamers have seen before. With this new version of Metro Exodus, 4A Games has redesigned its internal game engine to make all lighting use real-time ray tracing. You will need to download this new version of Metro Exodus separately, as this next-generation update is more than just a patch. ![]() However, it is worth remembering that Metro Exodus' PC Enhanced Edition will be a separate version of the game. ![]() Owners of Metro Exodus on PC will receive free access to the game's PC Enhanced Edition. Through the use of ray tracing, a next-generation temporal reconstruction technology, a fully ray-traced lighting system and "thousands of optimised shaders", A4 Games has delivered a next-generation version of their latest Metro experience. This version of Metro Exodus is a standalone version of the game, offering support for 4A Games' latest engine upgrades and some of the most advanced visuals on the PC market today. 4A Games has released Metro Exodus PC Enhanced Edition, launching the first retail PC game to require support for hardware-accelerated ray-tracing as a minimum system requirement.
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