As Digital Foundry demonstrates, the quality is unmatched, and the improvement over Metro Exodus’ original single bounce technique is incredible. This Dynamic Diffuse Global Illumination (DDGI) technique, based on and using much of the same shader technology as our RTXGI SDK, occurs seamlessly, and is surely the model other developers will adopt moving forward. In other words, the additional bounces are calculated in less than a second, rather than instantaneously, and the results blended together to create a performant jaw-dropping effect that comes close to the quality of lighting seen in even-more intensive path-traced games.
4K METRO LAST LIGHT IMAGE PC
Now, the PC Enhanced Edition can simulate ‘infinite’ bounces by sampling and caching a number of rays each frame into a world-space grid of light probes. Simulating this in a game is computationally expensive, and back in 2019 Metro Exodus only accounted for a single bounce of light to keep frame rates playable. In the real world, light bounces until its energy dissipates, enabling a room to be illuminated through even a small gap when bright direct sunlight streams in. This fundamental change also enabled the developers to eschew time-consuming testing, tweaking, rendering, and baking associated with the use of rasterized workarounds, greatly accelerating their work on the PC Enhanced Edition.
4K METRO LAST LIGHT IMAGE SERIES
To make this a reality, every single rasterised light has either been removed from the game, or upgraded to a new and improved ray-traced version, necessitating the use of a ray tracing-capable GPU, like the GeForce RTX series of graphics cards. Dark interiors are bathed in light, materials glisten and subtly shine when struck by light, and the color of light is realistically transmitted throughout each scene. Now, light from the sun, moon, sky, man-made lights, and all other light sources can brighten interiors, exteriors, characters, enemies, and weapons, dramatically improving the game’s appearance. Previously, only sunlight could naturally illuminate environments, limiting the tech’s usefulness in many of the game’s locations. In the Metro Exodus PC Enhanced Edition, 4A Games has completely overhauled RTGI, introducing a new generational leap in image quality and immersion that finally rivals that of Hollywood’s biggest blockbusters.įor starters, all shadowed lights in the game now contribute to ray-traced global illumination.
Compared to the game with ray tracing disabled, the difference in quality was staggering, giving players their first taste of next-gen gaming.
4K METRO LAST LIGHT IMAGE WINDOWS
With ray tracing, powered by GeForce RTX GPUs, 4A Games introduced gamers to ray-traced Global Illumination lighting (RTGI) in Metro Exodus, simulating how light naturally floods in through windows and damaged surfaces, brightening interiors.
However, each solution had a compromise, and no matter how many effects and workarounds a developer combined, none could approach the quality and realism of the ray tracing seen in animated movies and Hollywood visual effects. Prior to the introduction of real-time videogame ray tracing in 2019, when GeForce RTX GPUs launched with dedicated RT Cores that enabled ray tracing at playable frame rates, game lighting was achieved with a slate of ingenious and inventive rasterised hacks. Gone are rasterised lighting fall backs and clever hacks - now, all lighting is calculated in real-time with superior accuracy using ray tracing, necessitating the use of a GeForce RTX graphics card for NVIDIA gamers. In the two years since 4A Games pioneered the use of real-time ray tracing, new research, tools, and middleware have led to massive strides in image quality and performance, inspiring the team at 4A to create a new, upgraded version of the game entitled Metro Exodus PC Enhanced Edition.įree to everyone who already owns Metro Exodus, the PC Enhanced Edition primarily improves lighting by introducing a suite of new, ray-traced dependent features.
Metro 2033 featured a raft of 2010-era cutting-edge tech, including DirectX 11 tessellation and GPU PhysX acceleration, 2013’s Metro: Last Light improved upon everything while making great strides in the fields of environmental destruction, post processing and particle effects, and 2019’s Metro Exodus was one of the first games to implement real-time ray tracing and NVIDIA DLSS, kick starting a new generation of gaming. 4A Games’ three critically acclaimed Metro games each pushed the limits of PCs at the time of their release, utilising the latest technologies to ramp up immersion and image quality, and to enhance gameplay.
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