Cemu

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Cemu
Cemu Screenshot.png
Cemu 1.22.6c running on Windows 10
Original author(s)Exzap
Petergov
Developer(s)Team Cemu
Initial releaseOctober 13, 2015; 5 years ago (2015-10-13)[1]
Stable release
1.22.6c / February 12, 2021; 18 days ago (2021-02-12)
Preview release
1.22.7 / February 23, 2021; 7 days ago (2021-02-23)
Written inC++
Operating system64-bit Windows 7 and above
Size7.59MB compressed
Available inEnglish
TypeVideo game console emulator
LicenseFreemium (latest version available one week early through Patreon donation)
Websitecemu.info

Cemu is a closed-source Wii U video game console emulator developed by Exzap who serves as the core and GPU developer, and Petergov as the core and audio emulation developer.[2] It was initially released on October 13, 2015 for Microsoft Windows.[1][3][4] Typically, the emulator updates once every two to four weeks, with Patreon supporters receiving updates a week before the public release.[5] Though it is still under development, it is able to run certain games smoothly.[6][7] It was successful at booting and running The Legend of Zelda: Breath of the Wild soon after its release.

Development[edit]

Designed as a proof-of-concept, the initial release of Cemu could successfully boot Mario Kart 8 and The Legend of Zelda: The Wind Waker HD yet lacked Wii U Gamepad support and audio and suffered from stutters and video glitches.[8] Cemu could run on 64-bit Windows operating systems and only supported OpenGL 3.3 on release. Despite the Wii U sharing a similar name as its predecessor, the Wii, the emulator was built independently from Dolphin, a Wii emulator, as the systems only shared their CPU architecture in common.[9] The emulator would rapidly progress from this state and increase its compatibility with the Wii U game library and add more features.

A couple of days after The Legend of Zelda: Breath of the Wild released, Cemu was able to boot the game though running at a sluggish framerate, without audio, and filled with many glitches. The anticipation for emulation of The Legend of Zelda: Breath of the Wild caused the emulator's Patreon to increase monthly donations to $7,400 per month[10] and later $22,317 per month[11]. Developers of Cemu expected that The Legend of Zelda: Breath of the Wild would be playable with only a few months' worth of work,[12] and had a rudimentary version of the game's tutorial playable within weeks of its release.[13] Cutscenes were made available with a community-made add-on called Cemuhook though Cemu 1.18.0 removed the need for the plugin.[14][15].

Reception[edit]

The emulator has received positive reception on its ability to play Wii U games on PC at higher resolutions than 1920 by 1080p, the base resolution of the console, via the usage of graphics packs. Notable games running at higher resolutions include Mario Kart 8 running in 8K resolution[16] and The Legend of Zelda: Breath of the Wild in 4K resolution.[17] Many mods and enhancements have been developed for The Legend of Zelda: Breath of the Wild.[18] In August 2017, a hack to Cemu Emulator developed by Cemu community member Xalphenos allowed The Legend of Zelda: Breath of the Wild to run at 60fps, higher than the games native 30fps limit.[19]

Unlike other emulators, Cemu is notably not open source. Exzap explained that it allows for quick progress and for more control of its development. However, the decision drew ire from other emulation developers. Compared to Dolphin Emulator, a clean-room open source reverse-engineered emulator, potentially helping the project avoid lawsuits from Nintendo, Cemu is a closed source emulator so it is unknown if Console SDKs, leaks, or other illegal information was used to aid in the development of the emulator. Byuu, the creator of Higan, condemned the decision for Cemu to be closed source as they argued that Cemu benefitted from the work of previous emulators without contributing back.[20]

Furthermore, it was one of the first commercial emulators to use Patreon for its funding. Pierre Bourdan, a Dolphin developer, disagreed with its commercial status as he worried that there could be incentives to improve emulation of desired games or focus on bug fixes from high donors.[20]

See also[edit]

References[edit]

  1. ^ a b Plunkett, Luke (14 October 2015). "Wii U Emulation Is Coming Along". Kotaku. Retrieved 17 May 2016.
  2. ^ Khaw, Cassandra (14 October 2015). "Cemu, the first working Nintendo Wii U emulator, publicly released". Ars Technica. Retrieved 17 May 2016.
  3. ^ Khan, Imad (16 May 2016). "Cemu Wii U emulator runs Mario Kart 8 almost flawlessly after update". Retrieved 16 August 2016.
  4. ^ Hassan, Ahmed. "CEMU 1.5.1 Perfectly Runs Legend Of Zelda: Twilight Princess HD, Mario Kart 8 & Super Mario Bros U - TechFrag". Archived from the original on 31 October 2017. Retrieved 31 May 2016.
  5. ^ Campbell, Mark (May 16, 2016). "The Cemu Wii U Emulator version 1.5.0 now runs Mario Kart 8 almost perfectly". Overclock3D. Retrieved May 15, 2017.
  6. ^ Mendoza, Menchie (16 December 2015). "You Can Now Play 'Mario Kart 8' On PC With Cemu Wii U Emulator [Video]". Tech Times. Retrieved 17 May 2016.
  7. ^ Khan, Imad (16 May 2016). "Cemu Wii U emulator runs Mario Kart 8 almost flawlessly after update". Digital Trends. Retrieved 17 May 2016.
  8. ^ "Wii U emulator (almost) runs 'Mario Kart 8' on your PC". Engadget. Retrieved 2021-03-02.
  9. ^ Khaw, Cassandra (2015-10-14). "Cemu, the first working Nintendo Wii U emulator, publicly released". Ars Technica. Retrieved 2021-03-02.
  10. ^ Fenlon, Wes (2017-03-07). "How the Cemu emulator's devs got Zelda: Breath of the Wild running in just a few hours". PC Gamer. Retrieved 2021-03-02.
  11. ^ "Wii U emulator team has huge parts of Zelda: Breath of the Wild working on PC". VentureBeat. 2017-03-23. Retrieved 2021-03-02.
  12. ^ Phillips, Tom (March 7, 2017). "Zelda: Breath of the Wild already up and running on PC". Eurogamer. Retrieved March 24, 2017.
  13. ^ Williams, Mike (March 22, 2017). "Breath of the Wild Nearly Running on PC Via CEMU Emulator". USgamer. Retrieved March 24, 2017.
  14. ^ Becht, Eli (May 2, 2017). "'Breath of the Wild' CEMU 1.7.5 Update". Heavy.com. Retrieved December 28, 2017.
  15. ^ Meo, Francesco De (2020-04-06). "Wii U Emulator Cemu 1.18.0c Released; Vulkan Performance Improved For Zelda Breath of the Wild and More". Wccftech. Retrieved 2021-03-02.
  16. ^ "Mario Kart 8, Running At 4K". Kotaku. Retrieved 2021-03-02.
  17. ^ "Zelda: Breath Of The Wild Looks Awesome In 4K". Kotaku. Retrieved 2021-03-02.
  18. ^ Morton, Lauren (2017-11-20). "The Legend of Zelda: Breath of the Wild's PC mod scene is bizarre and amazing". PC Gamer. Retrieved 2021-03-02.
  19. ^ Fenlon, Wes (2017-08-18). "New Cemu emulator hack enables 60 fps in The Legend of Zelda: Breath of the Wild". PC Gamer. Retrieved 2021-03-02.
  20. ^ a b Fenlon, Wes (2017-03-28). "The ethics of emulation: how creators, the community, and the law view console emulators". PC Gamer. Retrieved 2021-03-02.

External links[edit]