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Unreal Engine 5 (UE5) is the latest version of Unreal Engine developed by Epic Games.It was revealed in May 2020 and officially released in April 2022. Unreal Engine 5 includes multiple upgrades and new features, including Nanite, a system that automatically adjusts the level of detail of meshes, and Lumen, a dynamic global illumination and reflections system that leverages software as well as ...
Unreal Engine 4 (UE4) is the fourth version of Unreal Engine developed by Epic Games. UE4 began development in 2003 and was released in March 2014, with the first game using UE4 being released in April 2014.
Unreal Engine (UE) is a 3D computer graphics game engine developed by Epic Games, first showcased in the 1998 first-person shooter video game Unreal. Initially developed for PC first-person shooters, it has since been used in a variety of genres of games and has been adopted by other industries, most notably the film and television industry.
The technology to create the demo was all sourced from then-existing high-end PCs. [6] An initial mock up of Agni's hair was created using a mannequin and wig styled by a professional make-up artist. Each character's face was constructed around mo-capped footage of live actors, then tweaked and expanded in post-production. [ 10 ]
Unreal Engine 3 (UE3) is the third version of Unreal Engine developed by Epic Games. Unreal Engine 3 was one of the first game engines to support multithreading. It used DirectX 9 as its baseline graphics API, simplifying its rendering code. The first games using UE3 were released at the end of 2006. It was succeeded by Unreal Engine 4.
Unreal Engine 1 (UE1, originally just Unreal Engine) is the first version of the Unreal Engine series of game engines. It was initially developed in 1995 by Epic Games founder Tim Sweeney for Unreal. Epic Games later began to license the engine to other game development studios. It was succeeded by Unreal Engine 2.
Luminous efficacy can be normalized by the maximum possible luminous efficacy to a dimensionless quantity called luminous efficiency.The distinction between efficacy and efficiency is not always carefully maintained in published sources, so it is not uncommon to see "efficiencies" expressed in lumens per watt, or "efficacies" expressed as a percentage.
If a lamp has a 1 lumen bulb and the optics of the lamp are set up to focus the light evenly into a 1 steradian beam, then the beam would have a luminous intensity of 1 candela. If the optics were changed to concentrate the beam into 1/2 steradian then the source would have a luminous intensity of 2 candela.