There's no low mode here, it's straight to High for the base implementation and then Ultra we believe adds further reflection steps to the computed GI path. In Metro Exodus, ray traced global illumination is available in two modes: High and Ultra. However, ray tracing allows the effect to be more accurate, more realistic and more comprehensive across a given scene. ![]() Global illumination is also not new to ray tracing, it's something that has been possible previously with rasterization techniques. Caustic effects are also possible, so overall the lighting system becomes better and more realistic. With this lighting system enabled, light bounces off surfaces creating greater depth, and if light interacts with colored surfaces along the way, this can lead to colored reflections. This is what global illumination provides. Instead, light reflects off surfaces onto other surfaces. In real life, light doesn't just emit from surfaces, hit something then disappear. But this kind of lighting is limited, it lacks realism and depth, it does not include indirect illumination. Without GI, you're left with direct illumination, so if there's a light source, anything that falls in the path of that source's lighting will be illuminated and will cast shadows. ![]() So what is global illumination? To answer that, We'll start by talking about how lighting works without global illumination, as is the case in many games. We'll spend a brief bit of time talking about how DLSS can be added to the mix, so you'll get our usual comprehensive coverage of RTX in this game today. In this article we'll be looking at both the quality differences between RTX on and off for this title, as well as the performance hit across all four Nvidia GeForce RTX graphics cards at a range of resolutions. And the game is launching with optimized ray tracing and DLSS from day one. Ray tracing is implemented as global illumination, not reflections. This isn't a competitive online shooter, instead it's a slower paced, open-world single-player survival shooter. Considering the game is a reasonably fast paced competitive shooter, ray tracing in that game just isn't worth the penalty.īut things are pretty different when it comes to Metro Exodus. ![]() Last time we checked out ray tracing in Battlefield V we were a bit disappointed with the implementation, the use of ray-traced reflections didn't add a whole lot visually, there were issues with noise, and the performance hit was pretty severe. It's time for us to talk about ray tracing once again, this time in Metro Exodus, the latest game to integrate support for Nvidia's RTX technology.
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