Changes

{{Infoboxemulator|image logo = Cemu-Logo.png|first version = {{CemuVerVersion|Cemu}}|second active = Yes|third platform = [[Emulators on Windows|Windows]]</br>[[Emulators on Linux|Linux]] (experimental)</br>[[Emulators on macOS|macOS]] (experimental)|architecture = x86_64|target = [[Wii U emulators|Wii U]]|fourth developer = Exzap, Petergov|fifth website = [http://cemu.info Cemu]|sixth license = MPL-2.0|compatibility = Closed source}}[https://compat.cemu.info Compatibility list]|support = [https://www.patreon.com/cemu Patreon]'''Cemu''' is a closed-|source, Windows= [https://github.com/cemu-only project/Cemu GitHub]|bios = [[Wii U emulatorsEmulator_files#Wii_U|Wii U emulatorOptional]]. Currently, the GamePad, Classic, and Pro controllers are emulated. It also requires a high-end PC to run games at full speed, although there are numerous bugs that can crash games due to unimplemented features. }}

The latest version of '''[[wikipedia:Cemu|Cemu ]]''' is restricted at a [[Wii U emulators|Wii U emulator]], first to project donors for a week.<ref>https://www.patreon.com/cemu</ref> It's then followed by a free release with further improvements. The paid version has a simple DRM released in place doing a regular online verification, though some dedicated 2015 and eventually made open-source advocates like on mudlordin 2022. It's blog regularly post early pirated copies of that version with known for being the DRM removedfirst Wii U emulator to successfully boot a game.

==DownloadsDownload==* {| cellpadding="4"|align=center|{{Icon|Win}}|'''[http://cemu.info/index.html#download Latest free public release]'''<br/><small>Available one week after the Patreon builds release</small><br/>|-|align=center|{{Icon|Win|Lin|Mac}}|'''[https://github.com/cemu-project/Cemu/releases GitHub release]'''<br/><small>Experimental</small><br/>|}

* Windows 7 (x64) or above* macOS 12 Monterey or above* OpenGL 4.5 or Vulkan 1.1* RAM: 4 GB minimum, 8 GB or more recommended '''NVIDIA GPU:''' Runs as expected on most recent driver.<br>'''AMD GPU:''' Runs as expected on most recent driver. Avoid OpenGL due to bad performance<br>'''Intel GPU:''' Limited support. Vulkan is recommended ==Playing GamesGame formats and needed files=====Physical Dumpsdumps===

Your file must have many lines like this, one for the Wii U Common Key (D7B00402659BA2ABD2CB0DB27FA2B656), and one line for the Game Key of each game. Sharing these keys isn't exactly safe legally, but ROM sites at least share [http://pastebin.com/GWApZVLa the Game ones]. Note that for games using the Loadiine format, you won't need a Game Key at all, but those will need Cemu versions from 1.4.0 onward.

Your ISO must be either uncompressed, compressed using WUD format, or in Loadiine format (only possible for versions 1.4.0 onward) to boot in Cemu. Here's a [http://docs.google.com/spreadsheets/d/19WV2YQvS2PkiHnQTlYP7cE2eHOPl06Rx4tCvfud_Hpw/edit?pref=2&pli=1#gid=0 compatibility list]. Dump your discs using [https://gbatemp.net/threads/wudump-dump-raw-images-from-a-wiiu-game-disc.451736/ Wudump].

===Digital Copiescopies===CEMU Cemu supports either physical games dumps in WUD, or compressed WUX format, as well as game dumps converted to the Loadiine format. Loadiine games come as multiple directories with game files and a .rpx file.

Nintendo's servers are poorly secured due to a huge oversight when designing Wii U/3DS software protection. As such, with tickets proving you bought the game (but which you can get through less legit ways), there are downloader utilities like NUSGrabber, FunKiiU, UWizard, or jnus among others, and decryption tools like UWizard and CDecrypt, to obtain a functional copy.* Download an NUS downloader such as [http://application.wiiuusbhelper.com/Updater.exe WiiU USB Helper].* Paste this URL into WiiU USB helper when prompted for the titlekey database. - https://wiiu.titlekeys.com/* Select the game you want to download, click get it and then download games.* This will download the files for the game you chose (the same as the .tik's title). May I suggest that you choose your own region where possible, so the download is quicker (from your regional servers).* Now we need to convert the game into Loadiine format so that you can load it in Cemu.* Simply right click your newly downloaded game, then click Unpack/Convert to Loadiine (Pack/Unpack - Loadiine/CIA).* Load the .rpx file from [Your gamelocation]/code/[yourgame].rpx with cemuCemu.

Prior to 1.7.3, only updates were supported though pasting update files on the main game's folders (keeping in mind the main game is in Loadiine format) and overwriting any files. DLC wouldn't work at all through this method, though with some specific games there were workarounds and some could play DLC tracks in Mario Kart 8 through swapping of specific files. From 1.7.3 onwards, proper support for DLC and updates was included in CEMUCemu. The Update installation method has been reworked since 1.11.0 simplifying the installation method a lot.To install updates and DLC on Cemu on (1.11.0)+ versions you need to follow these steps :

Use *On Cemu interface, select File → Install game update or DLC*Select the meta.xml in the same process as above meta folder of the update or DLC*Run the game to download updates. Once decrypted, simply copy update the UI and paste these over show the original game's files.update and/or DLC version

To install updates ===Amiibo support===[[Amiibo]] are figurines unlocking various on Cemu (1.7-disc content in select 3DS and Wii U games.3+): * Play They use the game at least once * Open "logNFC technology.txt" and find "TitleId of launched game" followed by a 16-digit numberNintendo Amiibo data is distributed online as NFC tags (. Copy down that 16-digit numberbin files). * Go to "CEMUFOLDER/mlc01/usr/title" and create There's a folder with regularly updated complete set of the first 8 digits of that 16-digit code* Inside of that folderofficial ones, create a folder named with the last 8 digits. * Put in the files of the update into the folder* To apply DLC create a folder inside of the folder with your update and create a folder named "aoc" and put the DLC files into but there and simply run the gameare also unofficial spoofed packs on various other sites.

To add DLC to games:*Run the game as normal, at least once. *Check Recent versions of Cemu's loginclude Amiibo support.txt Simply go to NFC / Scan NFC Tag from file , and look for a line that says "Mounting local storage (AOC): .\mlc01\usr\title\NUMBERS\NUMBERS\aoc\"*Add (create) folders with the same name as the above (substituting load the "NUMBERS" bit with the actual numbers) in your cemu\mlc01\etcrelevant . bin file*Add any updates (must . Keep in mind Amiibo support in Cemu is incomplete right now and not all figurines are compatible yet - though incompatibilities may be added first) and DLC you want to this folder (code, content and meta folders live inside the aoc folder)caused by bad Amiibo dumps as well.

As Cemu added native support for Wii Remote controllers as of 1.712.0. Cemu cannot connect to a real (or emulated) [[Nintendo 3DS emulators|3DS]].3d ===Shader caches===When your game is loaded, check for its ID on the Wii U GamePad title bar in front of "SaveDir:" and the Wii U Classic Controller note it down. The directory where transferable shader caches are emulated, but stored is <code>.\Cemu\shaderCache\transferable</code>. They're generated the Wiimote still isn't emulated yetfirst time you play through a game and at that time cause noticeable stuttering. You can set up download a complete cache from places like [https://chriztr.github.io/cemu_shader_and_pipeline_caches/ here] and rename them to match your game version's ID to spare yourself most of that unpleasant experience. Just keep in mind that shader caches from versions older than 1.8 GamePads in the menu if .0 are incompatible with later versions of Cemu. At startup, Cemu will prepare a compiled version of that cache under <code>.\Cemu\shaderCache\precompiled</code> and that one depends on your GPU driver, so you might wantto erase it if any problems or crashes when compiling shaders at startup occur.

Emulated Wii U GamePad features ==Troubleshooting/speeding up=====Shader caches===Shaders are normally cached as follow: * Touch Controls: Mouse left clickyou play the game.* Tilting This can cause a lot of stutters and Gyro Controls: Holding slow the mouse right-click and dragginggame down. * Switch Screens between TV and GamePad: "TAB" keyHowever, "Ctrl+TAB" to keep focusas of version 1. TV by default19.* Microphone: Spoofed0, a configurable key simulates blowing Cemu added support for Asynchronous Shader Compiling on their Vulkan API which can make shader compiling near instantaneous on the micmodern hardware, so try enabling that before hunting for shader caches.

A menu allows Cemu accepts other shader caches that can be traded online. It's often very difficult to generate a complete cache for loading NFC tags from Amiiboslarge games, and will not completely eliminate stuttering, which is why using Asynchronous Shader Compiling is recommended instead. (More details would be appreciated)

As of now, no online features or 3DS/Wii U connectivity features are possible[[File:Shadercachestuff.png|thumb|Some settings in the Nvidia control panel might help.]]

==Improving Performance=====Shadercaches===NormallySome games' transferable caches may cause slowdowns on some graphics cards, when playing a game in Cemulike the GeForce GTX 970. If this is the case, a shader cache will be generated as you play. This will cause a lot of stutter have to generate your own shaders and slow the game down delete the first time ones you play that level/area/gamedownloaded.Luckily, Cemu allows you to transfer your shader cacheIn the case of the GeForce, allowing you to download one from a friend (or just someone else on also consider deleting the internet).Reddit seems to be a good place to get these shadercaches. Simply [https://www.reddit.com/r/CEMUcaches/ go here] bin and search for the game you want a cache for.*Note that it is very difficult to generate a 100toc file in your GLCache at <code>%APPDATA% complete shadercache for large games and therefore this will not definitely completely eliminate stuttering\NVIDIA\GLCache\(hexstring)\(hexstring)</code>.

Transferable shader caches may cause slowdowns in some games==Graphic Packs==To work around emulation bugs and other problems the way [[Dolphin]] does, on some graphics cards (observed "Graphic Packs" are title-specific property sheets which define advanced settings you might not be able to change in Geforce 970s)the interface. If this is the caseBasic rendering options including shadow resolution and quality, post-processing effects like bloom, lighting and god rays, custom antialiasing, delete both your transferable and precompiled caches as well as the such can be applied here.bin and /toc file in your NVIDIA GLCache found in C:\Users\(You)\AppData\Roaming\NVIDIA\GLCache\(hexstring)\(hexstring). In this case, you will have can even use them to generate your own shaders''reduce'' the internal resolution for an increase in the framerate.*This may get fixed after 1.7is not to be confused with '''Texture Packs''', which are replacement textures; Cemu doesn't support that, but it is planned.0, who knows?

Changing your NVidia control panel settings to The "Graphic Packs" themselves are folders under the <code>graphicPacks</code> directory. They can be named anything, but they should contain the "<code>rules.txt</code>" file. A bare-bones example of a "Graphics Pack", called "Bayo_1080p", would look like this might help with shadercache slowdown issues:

[Definition] titleIds = 0005000010172600,0005000010172700,000500001011b900,000500001014db00,0005000010157e00,0005000010157f00 name = "Bayonetta 1 + 2 - 1080p" [File:Shadercachestuff.png]TextureRedefine] width = 1280 height = 720 overwriteWidth = 1920 overwriteHeight = 1080

===Native H264 Decoder===Lots Whenever the titleId matches the current one, Cemu will show the Graphics Pack under Options → Graphics Pack. If you don't know what the titleId of Wii U games use high resolution MP4 videos and render them using codecs intended for the Wii Ugame you want is, which can get slow to emulate, and cause display bugs on CEMUcheck the <code>logs. [https:/txt</sshnukecode> file.net/cemuhook/ CEMUhook] is a hook utility used You can safely delete it in conjunction with CEMU from versions 1.7.3 onward to render these cutscenes with the event that it gets too big for a much faster video codec native text editor to Windows. It's not officially supported thoughparse.

===Getting more performance===Some users The overwriteWidth and overwriteHeight properties used in this example will upscale the game from 720p to 1080p. But if the game doesn't have reported that disabling hyperthreading improves performance all of its textures in Cemu. On Windows with hyperthreaded coresthe specified resolution, turn off processor affinity for imaginary cores. This will they won't be every other core in your processor affinityupscaled and could look messy as a result. To do In thiscase, go to this problem is seen in some FMVs in the game. This is the purpose of the cemuTextureRedefine rule.exe process in task manager, right click, set affinity and then turn off every other core:

[[File:Processor_affinitySince 1.13.0, the graphic packs system and interface was overhauled for better use and many bugs when using multiples graphic packs were fixed.For 1.15.1 and now on, users can download the community's graphics packs linked below directly from Cemu user interface and just check the graphics packs they want to enable. That update completly removed the need to manage files for the user.png]]

* [httphttps://compatwiki.cemu.info/ Compatibility listwiki/Main_Page Wiki]* [https://discord.gg/5psYsup Official Discord]