The Callisto Protocol has returned to show itself on the occasion of Gamescom 2022 and various details on the characteristics of the game have been released by Chief Technical Officer Mark James, who reported how the title supports the ray tracing and contain some elements of Unreal Engine 5apparently.
“It was important for us to achieve a physical consistency of lights and shadows in the game, “explained James,” contrasts and occlusion are important for a horror. Using our corridor-based staircase of up to 20 meters, we noticed that around 8 light sources can affect the surfaces of the setting. “
To achieve these results, ray tracing is useful but it seems that the Unreal Engine 4 is not able to handle such a complexity as regards the lighting system.
“Unfortunately, we noticed that UE4 is limited to only 4 light sources capable of generating shadows, so we first worked on modifying the engine so that we could include more sources at a lower cost in terms of performance.”
The Striking Distance team has therefore come up with a solution with hybrid ray traced shadows. Moving forward with development, since Unreal Engine 5 had already emerged in more complete form, the developers also collaborated with Epic Games to introduce some features of the new graphics engine within the pipeline of The Callisto Protocol, which led to intermediate solutions between one generation and another, effectively introducing some technical elements that are present in Unreal Engine 5.
In particular, the reflections and part of the management of the lights are linked to ray tracing and more advanced features of the Epic Games graphics engine. For the rest, we have seen in the past few hours the admission of Glen Schofield on the use of crunch in development and the fact that the game will be supported with DLC for a year after launch.
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