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PhysX is a proprietary realtime physics engine middleware SDK. PhysX was authored at NovodeX, an ETH Zurich spin-off. In 2004 NovodeX was acquired by Ageia, and in February 2008 Ageia was acquired by Nvidia. The term PhysX can also refer to the PPU expansion card designed by Ageia to accelerate PhysX-enabled video games. Video games supporting hardware acceleration by PhysX can be accelerated by either a PhysX PPU or a CUDA-enabled GeForce GPU (if it has at least 256MB of dedicated VRAM), thus offloading physics calculations from the CPU, allowing it to perform other tasks instead. Middleware physics engines free game developers from writing own code which implements classical mechanics (Newtonian physics) to do e.g. soft body dynamics. PhysX is one of the handful of physics engines used in the large majority of today's games.〔 The PhysX engine and SDK are available for Microsoft Windows, OS X, Linux, PlayStation 2, PlayStation 3,〔(【引用サイトリンク】title=Playstation 3 gets free PhysX from Nvidia )〕 PlayStation 4,〔http://www.ign.com/articles/2013/03/07/nvidia-announces-physx-support-for-playstation-4〕 Xbox 360, Xbox One and the Wii. The PhysX SDK is provided to developers for free for both commercial and non-commercial use on Windows. For Linux, OS X and Android platforms the PhysX SDK is free for educational and non-commercial use.〔(【引用サイトリンク】title=PhysX Downloads )〕 At GDC 2015, Nvidia made PhysX free with source code available on GitHub.〔(【引用サイトリンク】title=PhysX On GitHub )〕 The first game to use PhysX was ''Bet on Soldier''. Nvidia PhysX is part of Nvidia GameWorks. ==History== What is known today as PhysX originated as a physics simulation engine called NovodeX. The multi-threaded engine was developed by Swiss company NovodeX AG. In 2004, Ageia acquired NovodeX AG and began developing a hardware technology that could accelerate physics calculations, aiding the CPU. Ageia called the technology PhysX PPU (physics processing unit), and the SDK was renamed from NovodeX to PhysX. In 2008, Ageia was itself acquired by graphics technology manufacturer Nvidia. Nvidia started enabling PhysX hardware acceleration on its line of GeForce graphics cards and eventually dropped support for Ageia PPUs.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「PhysX」の詳細全文を読む スポンサード リンク
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