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PhysX
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<h2 id="history">History</h2> <p>What is known today as PhysX originated as a physics simulation engine called NovodeX. The engine was developed by <a href="/facts/Switzerland/LcGuxeTe">Swiss</a> company NovodeX AG, an <a href="/facts/ETH_Zurich/IxHAFGUU">ETH Zurich</a> spin-off.<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a> In 2004, <a href="/facts/Ageia/zHH7oytF">Ageia</a> acquired NovodeX AG and began developing a hardware technology that could accelerate physics calculations, aiding the CPU. Ageia called the technology PhysX, the SDK was renamed from NovodeX to PhysX, and the accelerator cards were dubbed PPUs (Physics Processing Units).<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> </p><p>In its implementation, the first video game to use PhysX technology is <i><a href="/facts/The_Stalin_Subway/LvqSnyPX">The Stalin Subway</a></i>, released in Russia-only game stores in September 2005.<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a> </p><p>In 2008, Ageia was itself acquired by graphics technology manufacturer Nvidia.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> Nvidia started enabling PhysX <a href="/facts/Hardware_acceleration/ej5sM7hB">hardware acceleration</a> on its line of <a href="/facts/GeForce/HhHGHp4Y">GeForce</a> <a href="/facts/Graphics_card/bcKfPyFt">graphics cards</a><a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> and eventually dropped support for Ageia PPUs.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> </p><p>PhysX SDK 3.0 was released in May 2011 and represented a significant rewrite of the SDK, bringing improvements such as more efficient <a href="/facts/Multithreading_(computer_architecture)/ojEKsSNP">multithreading</a> and a unified code base for all supported platforms.<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a> </p><p>At <a href="/facts/Game_Developers_Conference/G8WBDbyW">GDC 2015</a>, Nvidia made the <a href="/facts/Source_code/o9J6Jv23">source code</a> for PhysX available on <a href="/facts/GitHub/n1hNCsc3">GitHub</a>, but required registration at developer.nvidia.com.<a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a> The <a href="/facts/Proprietary_software/9zcskxYL">proprietary</a> SDK was provided to developers for free for both commercial and non-commercial use on <a href="/facts/Microsoft_Windows/bwhAhuSL">Windows</a>, <a href="/facts/Linux/9FvCKSTq">Linux</a>, <a href="/facts/MacOS/Y93vVpTm">macOS</a>, <a href="/facts/IOS/mK5cggH5">iOS</a> and <a href="/facts/Android_(operating_system)/nNyHb0xz">Android</a> platforms.<a class="footnote-ref" id="fnref:11" href="#fn:11"><sup>11</sup></a> </p><p>On December 3, 2018, PhysX was made open source under a <a href="/facts/BSD-3/XLtmLp5x">3-clause BSD license</a>, but this change applied only to computer and mobile platforms.<a class="footnote-ref" id="fnref:12" href="#fn:12"><sup>12</sup></a> </p><p>On November 8, 2022, the open source release was updated to PhysX 5, under the same <a href="/facts/BSD-3/XLtmLp5x">3-clause BSD license</a>.<a class="footnote-ref" id="fnref:13" href="#fn:13"><sup>13</sup></a> </p><p>In February 2025, support for 32-bit CUDA applications was deprecated for the <a href="/facts/GeForce_RTX_50_series/K6XwAhQd">GeForce RTX 50 series</a>, rendering GPU-accelerated PhysX nonfunctional in 32-bit titles.<a class="footnote-ref" id="fnref:14" href="#fn:14"><sup>14</sup></a> This resulted in GPU PhysX options to be processed by the CPU, causing a degradation in performance, in titles such as <i><a href="/facts/Mirror%27s_Edge/Uj5kNsaW">Mirror's Edge</a></i> and <i><a href="/facts/Borderlands_2/l28jw8cL">Borderlands 2</a></i>.<a class="footnote-ref" id="fnref:15" href="#fn:15"><sup>15</sup></a> </p> <h2 id="features">Features</h2> <p>The PhysX engine and SDK are available for Microsoft Windows, macOS, Linux,<a class="footnote-ref" id="fnref:16" href="#fn:16"><sup>16</sup></a> <a href="/facts/PlayStation_3/obhuo97V">PlayStation 3</a>,<a class="footnote-ref" id="fnref:17" href="#fn:17"><sup>17</sup></a><a class="footnote-ref" id="fnref:18" href="#fn:18"><sup>18</sup></a> <a href="/facts/PlayStation_4/wMtdFnoP">PlayStation 4</a>,<a class="footnote-ref" id="fnref:19" href="#fn:19"><sup>19</sup></a> <a href="/facts/Xbox_360/dYlE3mL5">Xbox 360</a>,<a class="footnote-ref" id="fnref:20" href="#fn:20"><sup>20</sup></a> <a href="/facts/Xbox_One/Nom1XYbe">Xbox One</a>,<a class="footnote-ref" id="fnref:21" href="#fn:21"><sup>21</sup></a> <a href="/facts/Wii/BxUgl2da">Wii</a>,<a class="footnote-ref" id="fnref:22" href="#fn:22"><sup>22</sup></a> iOS and Android.<a class="footnote-ref" id="fnref:23" href="#fn:23"><sup>23</sup></a> </p><p>PhysX is a multi-threaded physics simulation SDK. It supports <a href="/facts/Rigid_body_dynamics/ajbkweF2">rigid body dynamics</a>, <a href="/facts/Soft-body_dynamics/oGunDtW0">soft body dynamics</a> (like <a href="/facts/Cloth_simulation/GMbRMSBE">cloth simulation</a>, including tearing and pressurized cloth), <a href="/facts/Ragdoll_physics/mNpouHhK">ragdolls</a> and character controllers, <a href="/facts/Vehicle_dynamics/qu2g6Eek">vehicle dynamics</a>, <a href="/facts/Particle_system/Jftr3YAQ">particles</a> and <a href="/facts/Computational_fluid_dynamics/zuWdtNJp">volumetric fluid simulation</a>. </p> <h2 id="hardware-acceleration">Hardware acceleration</h2> <h3>PPU</h3> <p>A <a href="/facts/Physics_processing_unit/cay9UPA0">physics processing unit</a> (PPU) is a processor specially designed to alleviate the calculation burden on the CPU, specifically calculations involving physics. PhysX PPUs were offered to consumers in the forms of <a href="/facts/Peripheral_Component_Interconnect/n6CGuFvP">PCI</a> or <a href="/facts/PCI_Express/ADhsLCUK">PCIe</a> cards by <a href="/facts/ASUS/134Qobfp">ASUS</a>,<a class="footnote-ref" id="fnref:24" href="#fn:24"><sup>24</sup></a> <a href="/facts/BFG_Technologies/l3j06b7R">BFG Technologies</a>,<a class="footnote-ref" id="fnref:25" href="#fn:25"><sup>25</sup></a><a class="footnote-ref" id="fnref:26" href="#fn:26"><sup>26</sup></a> <a href="/facts/Dell/wLlYNTMM">Dell</a><a class="footnote-ref" id="fnref:27" href="#fn:27"><sup>27</sup></a> and <a href="/facts/ELSA_Technology/jxd6DHsK">ELSA Technology</a>.<a class="footnote-ref" id="fnref:28" href="#fn:28"><sup>28</sup></a> </p><p>Beginning with version 2.8.3 of the PhysX SDK, support for PPU cards was dropped, and PPU cards are no longer manufactured.<a class="footnote-ref" id="fnref:29" href="#fn:29"><sup>29</sup></a> The last incarnation of PhysX PPU standalone card designed by Ageia had roughly the same PhysX performance as a dedicated <a href="/facts/9800GTX/SJ4CvMNw">9800GTX</a>.<a class="footnote-ref" id="fnref:30" href="#fn:30"><sup>30</sup></a> </p> <h3>GPU</h3> <p>After Nvidia's acquisition of Ageia, PhysX development turned away from PPU expansion cards and focused instead on the <a href="/facts/GPGPU/roBwsPY2">GPGPU</a> capabilities of modern GPUs. </p><p>Modern GPUs are very efficient at manipulating and displaying computer graphics, and their <a href="/facts/Parallel_computing/nQzcpzQt">highly parallel</a> structure makes them more effective than general-purpose CPUs for accelerating physical simulations using PhysX. </p><p>Any <a href="/facts/CUDA/fvPpolot">CUDA</a>-ready GeForce graphics card (8-series or later GPU with a minimum of 32 cores and a minimum of 256 MB dedicated graphics memory<a class="footnote-ref" id="fnref:31" href="#fn:31"><sup>31</sup></a>) can take advantage of PhysX without the need to install a dedicated PhysX card. </p> <h2 id="apex">APEX</h2> <p>Nvidia APEX technology is a multi-platform scalable dynamics framework build around the PhysX SDK. It was first introduced in <i><a href="/facts/Mafia_II/FU7ECe7t">Mafia II</a></i> in August 2010.<a class="footnote-ref" id="fnref:32" href="#fn:32"><sup>32</sup></a> Nvidia's APEX comprises the following modules: APEX Destruction, APEX Clothing, APEX Particles, APEX Turbulence, APEX ForceField and formerly APEX Vegetation which was suspended in 2011.<a class="footnote-ref" id="fnref:33" href="#fn:33"><sup>33</sup></a><a class="footnote-ref" id="fnref:34" href="#fn:34"><sup>34</sup></a> </p><p>From version 1.4.1 APEX SDK is deprecated.<a class="footnote-ref" id="fnref:35" href="#fn:35"><sup>35</sup></a> </p> <h2 id="nvidia-flex">Nvidia FleX</h2> <p>FleX is a particle based simulation technique for real-time <a href="/facts/Visual_effects/AdoEkAWU">visual effects</a>. Traditionally, visual effects are made using a combination of elements created using specialized solvers for <a href="/facts/Rigid_bodies/THezBlq2">rigid bodies</a>, fluids, clothing, etc. Because FleX uses a unified particle representation for all object types, it enables new effects where different simulated substances can interact with each other seamlessly. Such unified physics solvers are a staple of the <a href="/facts/3D_rendering/6SqukntK">offline computer graphics</a> world, where tools such as <a href="/facts/Autodesk_Maya/0WC3BKPd">Autodesk Maya</a>'s nCloth, and <a href="/facts/Autodesk_Softimage/XCjMQB17">Softimage</a>'s Lagoa are widely used. The goal for FleX is to use the power of GPUs to bring the capabilities of these offline applications to real-time computer graphics.<a class="footnote-ref" id="fnref:36" href="#fn:36"><sup>36</sup></a> </p> <h2 id="criticism-from-real-world-technologies">Criticism from Real World Technologies</h2> <p>On July 5, 2010, Real World Technologies published an analysis<a class="footnote-ref" id="fnref:37" href="#fn:37"><sup>37</sup></a> of the PhysX architecture. According to this analysis, most of the code used in PhysX applications at the time was based on <a href="/facts/X87/y8X9HnLL">x87</a> <a href="/facts/CPU_instruction/bgdQ1Fxf">instructions</a> without any <a href="/facts/Multithreading_(computer_architecture)/ojEKsSNP">multithreading</a> <a href="/facts/Code_optimization/nXz6RpRM">optimization</a>. This could cause significant performance drops when running PhysX code on the CPU. The article suggested that a PhysX rewrite using <a href="/facts/Streaming_SIMD_Extensions/mMa6EFyB">SSE</a> instructions may substantially lessen the performance discrepancy between CPU PhysX and GPU PhysX. </p><p>In response to the Real World Technologies analysis, Mike Skolones, <a href="/facts/Product_manager/SeL7Y2Nm">product manager</a> of PhysX, said<a class="footnote-ref" id="fnref:38" href="#fn:38"><sup>38</sup></a> that SSE support had been left behind because most games are developed for <a href="/facts/Video_game_console/K72D1NSS">consoles</a> first and then ported to the PC. As a result, modern computers run these games faster and better than the consoles even with little or no optimization. Senior <a href="/facts/Public_relations/mQJUIuWQ">PR manager</a> of Nvidia, Bryan Del Rizzo, explained that multithreading had already been available with CPU PhysX 2.x and that it had been up to the developer to make use of it. He also stated that automatic multithreading and SSE would be introduced with version 3 of the PhysX SDK.<a class="footnote-ref" id="fnref:39" href="#fn:39"><sup>39</sup></a> </p><p>PhysX SDK 3.0 was released in May 2011 and represented a significant rewrite of the SDK, bringing improvements such as more efficient multithreading and a unified code base for all supported platforms.<a class="footnote-ref" id="fnref:40" href="#fn:40"><sup>40</sup></a> </p> <h2 id="usage">Usage</h2> <h3>PhysX in video games</h3> <p>PhysX technology is used by <a href="/facts/Game_engine/lojx7lTG">game engines</a> such as <a href="/facts/Unreal_Engine/0ghxRQl8">Unreal Engine</a> (version 3 onwards), <a href="/facts/Unity_(game_engine)/GsM1fEUG">Unity</a>, <a href="/facts/Gamebryo/PS16NnC2">Gamebryo</a>, <a href="/facts/Vision_Engine/hGRLg5dz">Vision</a> (version 6 onwards), Instinct Engine,<a class="footnote-ref" id="fnref:41" href="#fn:41"><sup>41</sup></a> <a href="/facts/Panda3D/jtN1FsIn">Panda3D</a>, <a href="/facts/Diesel_(game_engine)/DnGGEUka">Diesel</a>, <a href="/facts/Torque_(game_engine)/QIj06qIR">Torque</a>, <a href="/facts/HeroEngine/hWtSzWDg">HeroEngine</a>, and <a href="/facts/BigWorld/c6EWcR8o">BigWorld</a>.<a class="footnote-ref" id="fnref:42" href="#fn:42"><sup>42</sup></a> </p><p>As one of the handful of major physics engines, it is used in many games, such as <i><a href="/facts/The_Witcher_3:_Wild_Hunt/P08bcuNn">The Witcher 3: Wild Hunt</a></i>, <i><a href="/facts/Warframe/lptjmpb7">Warframe</a></i>, <i><a href="/facts/Killing_Floor_2/63vsUrFK">Killing Floor 2</a></i>, <i><a href="/facts/Fallout_4/gzkMrGMT">Fallout 4</a></i>, <i><a href="/facts/Batman:_Arkham_Knight/L1KtnXYJ">Batman: Arkham Knight</a></i>, <i><a href="/facts/Planetside_2/ratP1LFY">Planetside 2</a>, </i>and <i><a href="/facts/Borderlands_2/l28jw8cL">Borderlands 2</a></i>. Most of these games use the CPU to process the physics simulations. </p><p>Video games with optional support for hardware-accelerated PhysX often include additional effects such as tearable cloth, dynamic smoke or simulated particle debris.<a class="footnote-ref" id="fnref:43" href="#fn:43"><sup>43</sup></a><a class="footnote-ref" id="fnref:44" href="#fn:44"><sup>44</sup></a><a class="footnote-ref" id="fnref:45" href="#fn:45"><sup>45</sup></a> </p> <h3>PhysX in other software</h3> <p>Other software with PhysX support includes: </p> <ul><li><a href="/facts/Active_Worlds/q4rPnUu8">Active Worlds</a> (AW), a 3D virtual reality platform with its client running on Windows</li> <li><a href="/facts/Amazon_Lumberyard/YFwU36wE">Amazon Lumberyard</a>, a 3D game development engine developed by <a href="/facts/Amazon_(company)/YzUTUVE8">Amazon</a><a class="footnote-ref" id="fnref:46" href="#fn:46"><sup>46</sup></a></li> <li><a href="/facts/Autodesk_3ds_Max/5gr1vPx0">Autodesk 3ds Max</a>, <a href="/facts/Autodesk_Maya/0WC3BKPd">Autodesk Maya</a> and <a href="/facts/Autodesk_Softimage/XCjMQB17">Autodesk Softimage</a>, <a href="/facts/Computer_animation/rPW63nm0">computer animation</a> suites<a class="footnote-ref" id="fnref:47" href="#fn:47"><sup>47</sup></a><a class="footnote-ref" id="fnref:48" href="#fn:48"><sup>48</sup></a><a class="footnote-ref" id="fnref:49" href="#fn:49"><sup>49</sup></a></li> <li><a href="/facts/DarkBASIC_Professional/138an6Jk">DarkBASIC Professional</a> (with DarkPHYSICS upgrade), a <a href="/facts/Programming_language/cWTYbgWa">programming language</a> targeted at game development<a class="footnote-ref" id="fnref:50" href="#fn:50"><sup>50</sup></a></li> <li><a href="/facts/DX_Studio/uwxxTjzq">DX Studio</a>, an integrated development environment for creating interactive 3D graphics<a class="footnote-ref" id="fnref:51" href="#fn:51"><sup>51</sup></a></li> <li><a href="/facts/ForgeLight/pRSgcfW5">ForgeLight</a>, a game engine developed by the former <a href="/facts/Sony_Online_Entertainment/pRSgcfW5">Sony Online Entertainment</a>.</li> <li><a href="/facts/Futuremark/aGQ9LW1o">Futuremark</a>'s <a href="/facts/3DMark/qcYBgBh4">3DMark06</a> and <a href="/facts/3DMark/qcYBgBh4">Vantage</a> <a href="/facts/Benchmark_(computing)/XSS42cRe">benchmarking tools</a><a class="footnote-ref" id="fnref:52" href="#fn:52"><sup>52</sup></a></li> <li><a href="/facts/Microsoft_Robotics_Studio/nnHAcm3t">Microsoft Robotics Studio</a>, an environment for robot control and simulation<a class="footnote-ref" id="fnref:53" href="#fn:53"><sup>53</sup></a></li> <li><a href="/facts/Nvidia/8QfCgqbu">Nvidia</a>'s SuperSonic Sled and Raging Rapids Ride, technology demos</li> <li><a href="/facts/OGRE/ec2xhxmX">OGRE</a> (via the NxOgre wrapper), an <a href="/facts/Open_source_software/HzTaB8E9">open source</a> <a href="/facts/Rendering_(computer_graphics)/YYxfnmAq">rendering engine</a></li> <li>The <a href="/facts/PAL_(software)/zACXyBpM">Physics Abstraction Layer</a>, a physical simulation <a href="/facts/Application_programming_interface/GMlN4vUr">API</a> abstraction system (it provides <a href="/facts/COLLADA/SEslfjPj">COLLADA</a> and <a href="/facts/Scythe_Physics_Editor/QlC7VoRF">Scythe Physics Editor</a> support for PhysX)<a class="footnote-ref" id="fnref:54" href="#fn:54"><sup>54</sup></a></li> <li>Rayfire, a plug-in for <a href="/facts/Autodesk_3ds_Max/5gr1vPx0">Autodesk 3ds Max</a> that allows fracturing and other physics simulations</li> <li>The Physics Engine Evaluation Lab, a tool designed to evaluate, compare and benchmark physics engines.<a class="footnote-ref" id="fnref:55" href="#fn:55"><sup>55</sup></a></li> <li><a href="/facts/Unreal_Engine/0ghxRQl8">Unreal Engine</a> game development software by <a href="/facts/Epic_Games/aoS4cGsK">Epic Games</a>. Unreal Engine 4.26 and onwards has officially deprecated PhysX.<a class="footnote-ref" id="fnref:56" href="#fn:56"><sup>56</sup></a></li> <li><a href="/facts/Unity_(game_engine)/GsM1fEUG">Unity</a> by Unity ApS. Unity's Data-Oriented Technology Stack does not use PhysX.<a class="footnote-ref" id="fnref:57" href="#fn:57"><sup>57</sup></a></li></ul> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/DirectX/jyy75wVN">DirectX</a></li> <li><a href="/facts/Bullet_(software)/jPb2WxWy">Bullet (software)</a></li> <li><a href="/facts/Havok_(software)/RopFFkHl">Havok (software)</a></li> <li><a href="/facts/Open_Dynamics_Engine/8739e20p">Open Dynamics Engine</a></li> <li><a href="/facts/Newton_Game_Dynamics/muC0obos">Newton Game Dynamics</a></li> <li><a href="/facts/OpenGL/xQoMWePr">OpenGL</a></li> <li><a href="/facts/Vortex_(software)/1kohG8SS">Vortex (software)</a></li> <li><a href="/facts/AGX_Multiphysics/cysV2wVt">AGX Multiphysics</a></li></ul> <h2 id="external-links">External links</h2> <ul><li><a href="https://developer.nvidia.com/physx-sdk">Official Product Site</a></li> <li><a href="http://www.techgage.com/article/ageia_physx_first_impressions/">Techgage: AGEIA PhysX.. First Impressions</a></li> <li><a href="http://techgage.com/article/nvidias_physx_performance_and_status_report/">Techgage: NVIDIA's PhysX: Performance and Status Report</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"NVIDIA PhysX SDK 4.1". Engadget. Retrieved April 5, 2022. <a href="https://github.com/NVIDIAGameWorks/PhysX" target="_blank">https://github.com/NVIDIAGameWorks/PhysX</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>"NVIDIA announces the release of PhysX SDK V3". Nvidia. Archived from the original on May 24, 2011. Retrieved June 3, 2011. <a href="https://web.archive.org/web/20110524145446/http://developer.nvidia.com/physx-sdk-v30" target="_blank">https://web.archive.org/web/20110524145446/http://developer.nvidia.com/physx-sdk-v30</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>"NovodeX AG". ETH Zürich. Archived from the original on January 8, 2018. Retrieved December 4, 2018. <a href="https://web.archive.org/web/20180108063920/https://www.ethz.ch/en/industry-and-society/entrepreneurship/spin-offs/exits/novodex.html" target="_blank">https://web.archive.org/web/20180108063920/https://www.ethz.ch/en/industry-and-society/entrepreneurship/spin-offs/exits/novodex.html</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>César A. Berardini (April 12, 2005). "AGEIA Technologies Interview". Archived from the original on September 21, 2011. Retrieved June 8, 2011. <a href="https://web.archive.org/web/20110921011441/http://interviews.teamxbox.com/xbox/1117/AGEIA-Technologies-Interview/p1" target="_blank">https://web.archive.org/web/20110921011441/http://interviews.teamxbox.com/xbox/1117/AGEIA-Technologies-Interview/p1</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>"Physics Engine: PhysX". MobyGames. Retrieved September 6, 2023. <a href="https://www.mobygames.com/group/7258/physics-engine-physx/" target="_blank">https://www.mobygames.com/group/7258/physics-engine-physx/</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>"NVIDIA completes Acquisition of AGEIA Technologies" (Press release). NVIDIA Corporation. February 13, 2008. Retrieved March 18, 2009. <a href="http://www.nvidia.com/object/io_1202895129984.html" target="_blank">http://www.nvidia.com/object/io_1202895129984.html</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>"PhysX For CUDA, Linux Support A Given?". Phoronix. Phoronix Media. February 14, 2008. 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