Unreal Engine 5 Introduces New Lumen Feature for Enhanced Performance on Nintendo Switch 2
Recently, a groundbreaking update to Unreal Engine 5 has added a new feature that promises to boost Lumen performance significantly. This enhancement may also facilitate the integration of advanced lighting technology into games designed for the upcoming Nintendo Switch 2.
Introducing Lumen Irradiance Cache
According to insights shared by tech artist Dylan Browne on X, the Lumen Irradiance Cache has been deployed in the Epic Games engine. This probe-based Lumen mode is tailored for lower-end devices. While it offers reduced occlusion detail and less impressive reflections compared to the standard Hardware Lumen, it provides a viable alternative for devices that cannot support full Lumen capabilities. A comparison video illustrates these differences, showcasing the value this mode brings despite its limitations.
Early Signs of Potential Benefits
The Lumen Irradiance Cache is currently in its early development phase, making it challenging to assess the extent of performance improvements for low-power devices. However, preliminary reports are encouraging. A GitHub commit that was subsequently removed indicated that the Lumen Radiance Cache could accelerate the Lumen gather stage by 2.5 times, resulting in an overall boost in Lumen Scene performance by 1.5 times.
Implications for Nintendo Switch 2 Games
The inclusion of a lightweight Lumen option is particularly advantageous for the Nintendo Switch 2, allowing developers to leverage Unreal Engine 5’s signature lighting technology to some degree. Existing titles like Cronos: The New Dawn have begun to incorporate Lumen, although the console’s CPU faces challenges when running games with such resource-intensive features at optimal performance levels.
Examples such as Fortnite running without Lumen and Nanite on the Nintendo Switch 2 highlight the need for tailored adaptations within the engine. The recent incorporation of this new Lumen option suggests that Epic Games is making strides in optimizing the engine for the hardware limitations of the Switch 2. It is hoped that developers will soon capitalize on these advances, allowing ports for the Switch 2 to align more closely with gameplay experiences on other consoles.
For additional details and insights, visit the original article on Wccftech.
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