# Cemu patch notes

> The Wii U emulator.

- Vendor: Cemu Project
- Category: Games
- Platforms: Desktop
- Official site: https://cemu.info
- Tracked by: What's New (https://whatsnew.fyi/product/cemu)
- Harvested from: GitHub (cemu-project/Cemu)
- Entries below: 10 (newest first)

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

## Releases

### v2.6 — Cemu 2.6

- Date: 2025-02-06
- Version: v2.6
- Original notes: https://github.com/cemu-project/Cemu/releases/tag/v2.6
- Permalink: https://whatsnew.fyi/product/cemu/releases/v2.6
- Labels: Platforms: Desktop

**Changelog:**
- Exporting saves via the title manager no longer crashes when the export path contains unicode characters
- Fixed a regression in DS Virtual Console titles (#1440)
- Fixed a bug where the debug shader dumping option would try to write files to the wrong directory
- Added a right-click context menu to the PPC debugger disassembly view and fixed some smaller bugs in the debugger
- Use libusb as the backend for HID/USB devices on Windows (#1471)
- Reduce amount of Vulkan sampler objects that are created. Reduces memory usage slightly and avoids crashes on drivers that have a low limit on sampler objects
- Improved index data caching on Vulkan. This may provide a very small performance benefit in some games
- The `--force-interpreter` command line option now always uses single-threaded CPU emulation like originally intended

### v2.5 — Cemu 2.5

- Date: 2024-12-07
- Version: v2.5
- Original notes: https://github.com/cemu-project/Cemu/releases/tag/v2.5
- Permalink: https://whatsnew.fyi/product/cemu/releases/v2.5
- Labels: Platforms: Desktop

**Changelog:**
- Upscaling and downscaling options in the graphics settings now work correctly on Vulkan. Previously, the hermite and bicubic scaling options would only work on OpenGL and silently fall back to bilinear filtering on Vulkan
- Graphic pack support for custom scaling shaders has been reworked and is now functional on Vulkan, with fixes carrying over to OpenGL. If you are a graphic pack developer see #1392 for details
- Cemu will now show an error if the MLC directory is not writeable
- Added a workaround for graphic driver crashes seen in the eShop versions of Fatal Frame. These are caused by the game shipping with shaders that contain infinite loops. The actual hardware has an escape mechanism for this that we don't yet emulate
- Added support for connecting Wiimotes via L2CAP on Linux (Details in #1353)
- Set correct version for MacOS bundle
- Updated Arabic, German, Russian and Swedish translations

### v2.4 — Cemu 2.4

- Date: 2024-11-13
- Version: v2.4
- Original notes: https://github.com/cemu-project/Cemu/releases/tag/v2.4
- Permalink: https://whatsnew.fyi/product/cemu/releases/v2.4
- Labels: Platforms: Desktop

**Changelog:**
- Added emulated Dimensions Toypad
- Fixed a corruption bug which could occur when reading from titles in .app/.wud/.wux format under rare circumstances
- Cemu will now validate all reads for .app/.wud/.wux format titles and log any detected errors to log.txt. In the future we will also show these errors on screen
- Reworked the Wii U error dialog implementation (ErrEula) for better accuracy. This should fix the bug where sometimes the error dialog was unskippable in some games
- Fixed a bug in the HLE implementation of proc_ui.ProcUIRegisterCallback/ProcUIRegisterBackgroundCallback

### v2.3 — Cemu 2.3

- Date: 2024-11-01
- Version: v2.3
- Original notes: https://github.com/cemu-project/Cemu/releases/tag/v2.3
- Permalink: https://whatsnew.fyi/product/cemu/releases/v2.3
- Labels: Platforms: Desktop

**Changelog:**
- Vulkan: Fixed a race condition where uniform data could get corrupted. Most commonly this would cause polygon corruptions in BotW or XCX but in theory could affect every game
- Vulkan: Changes to how frame display is handled to reduce input latency
- Input: Fixed a crash that could occur when closing the add controller dialog while a controller search was still active
- Amiibo: Fixed an issue where Amiibo were not detected in Mario Kart 8
- Online: SpotPass functionality now respects the proxy_server option in settings.xml
- Windows: In portable mode shortcut save icons will now be stored to the Cemu directory instead of %appdata%
- Misc: Fixed a crash that could occur when invalid command line parameters were passed to Cemu

### v2.2 — Cemu 2.2

- Date: 2024-09-08
- Version: v2.2
- Original notes: https://github.com/cemu-project/Cemu/releases/tag/v2.2
- Permalink: https://whatsnew.fyi/product/cemu/releases/v2.2
- Labels: Platforms: Desktop

**Changelog:**
- Handle null timeout in `nsysnet.select`. Fixes a crash in Skylanders SuperChargers and Imaginators
- Fixed an issue where changing the `Receive untested updates` option would have no effect
- The Linux appimage version will use the system `libstdc++.so.6` if it is newer than the bundled file
- Updated French, Korean and Simplified Chinese translations

### v2.1 — Cemu 2.1

- Date: 2024-08-26
- Version: v2.1
- Original notes: https://github.com/cemu-project/Cemu/releases/tag/v2.1
- Permalink: https://whatsnew.fyi/product/cemu/releases/v2.1
- Labels: Platforms: Desktop

This is the major release of **Cemu 2.1** with a cumulative changelog which includes the changes from all 93 experimental releases since **Cemu 2.0**.
For users that were already using our experimental updates (2.0-x), you can think of this release as the final experimental update. There are no noteworthy additional changes compared to Cemu 2.0-95 other than the new version number.

Starting with this release, Cemu will now only have a single release channel. Instead of experimental releases, there is a new option to control whether Cemu will update immediately to cutting-edge releases, which may contain uncaught bugs, or update with a slight delay. More details on this can be found [here](https://github.com/cemu-project/Cemu/pull/1306)

##### Changelog

**Major new additions:**
- Added appimage and flatpak releases for Linux
- Added an experimental release for macOS. Available for x86-64 only for now but it can be run on ARM macs through Rosetta 2 emulation. MoltenVK is used as the graphics backend
- Added a tool to emulate the USB portals for Skylanders and Disney Infinity
- Added NFC/NTAG support. Pokemon Rumble U figures can now be scanned from a file similar to the existing Amiibo scanning
- Added support for titles stored in `.wuhb` (Wii U homebrew) and `.app` (NUS) format
- Added support for connecting to [Pretendo](https://pretendo.network/) network services
- Cemu on Windows is now non-portable by default for <ins>new installations only</ins>. All data and config files will be stored in `%appdata%/Cemu`. This makes the Windows installation match other platforms. Existing installations will not be affected
- Added portable mode by placing a directory named `portable` next to the Cemu executable. Cemu will then store data and config files in this folder. This works on all platforms

**General:**
- Added `Disable screen saver` setting
- Added `--title-id` command line parameter to launch games by title id
- Added desktop shortcut creation to game list
- Added experimental GamePad microphone support
- Improved unicode character support across the board, including the names and descriptions of graphic packs
- Cemu will no longer refuse to start when the MLC path is invalid
- Fixed several GamePad window size issues
- Fixed a regression causing an infinite loop in the renderer. This would previously cause Tokyo Mirage Sessions and Pokkén Tournament to freeze on boot
- Fixed a regression causing some games to crash without dumped Mii system files. Known affected games were Sonic Lost World and Super Mario 3D World
- Initial support for title switching
  - Improved compatibility with the Wii U menu which can now run and launch games
  - Games with launchers, like Ryū ga Gotoku 1 & 2 HD and Steamworld Collection, are now playable
  - This feature is still experimental. Once it's stable, the option to quit games without closing Cemu will be added
- Fixed a crash that could occur when the Title Manager tried to display system data titles
- Fullscreen mode can now also be toggled with F11
- The GamePad view will now display the game-specific bootup screen
- Discord rich presence will use the translated title name that matches the console language, instead of defaulting to English
- Fixed an issue where error dialogs in a game (erreula) can't be interacted with if the GamePad window is open
- Updated default game profiles
- Decreased the latency of the H264 decoder by decoding frames asynchronously

**Windows:**
- Re-enabled DPI awareness
- Fixed a crash that would occur when no audio devices are available

**Linux:**
- Added wayland support
- Added support for storing MLC and game files on case-sensitive filesystems
- Added an option to enable [GameMode](https://github.com/FeralInteractive/gamemode)
- Brought online features on a par with Windows builds
- Enabled DSU controller support
- Emulated games can now access HID devices from the host via libusb (e.g. Skylanders portal)
-

_[Truncated at 4000 characters — full notes: https://github.com/cemu-project/Cemu/releases/tag/v2.1]_

### v2.0-95 — Cemu 2.0-95 (Experimental)

- Date: 2024-08-23
- Version: v2.0-95
- Original notes: https://github.com/cemu-project/Cemu/releases/tag/v2.0-95
- Permalink: https://whatsnew.fyi/product/cemu/releases/v2.0-95
- Labels: Pre-release; Platforms: Desktop

Cemu experimental release

### v2.0-94 — Cemu 2.0-94 (Experimental)

- Date: 2024-08-15
- Version: v2.0-94
- Original notes: https://github.com/cemu-project/Cemu/releases/tag/v2.0-94
- Permalink: https://whatsnew.fyi/product/cemu/releases/v2.0-94
- Labels: Pre-release; Platforms: Desktop

Cemu experimental release

### v2.0-92 — Cemu 2.0-92 (Experimental)

- Date: 2024-08-08
- Version: v2.0-92
- Original notes: https://github.com/cemu-project/Cemu/releases/tag/v2.0-92
- Permalink: https://whatsnew.fyi/product/cemu/releases/v2.0-92
- Labels: Pre-release; Platforms: Desktop

Cemu experimental release

### v2.0-91 — Cemu 2.0-91 (Experimental)

- Date: 2024-07-27
- Version: v2.0-91
- Original notes: https://github.com/cemu-project/Cemu/releases/tag/v2.0-91
- Permalink: https://whatsnew.fyi/product/cemu/releases/v2.0-91
- Labels: Pre-release; Platforms: Desktop

Cemu experimental release