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Ryujinx/README.md
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Haydn: Part 1 (#2007) 
* Haydn: Part 1

Based on my reverse of audio 11.0.0.

As always, core implementation under LGPLv3 for the same reasons as for Amadeus.

This place the bases of a more flexible audio system while making audout & audin accurate.

This have the following improvements:
- Complete reimplementation of audout and audin.
- Audin currently only have a dummy backend.
- Dramatically reduce CPU usage by up to 50% in common cases (SoundIO and OpenAL).
- Audio Renderer now can output to 5.1 devices when supported.
- Audio Renderer init its backend on demand instead of keeping two up all the time.
- All backends implementation are now in their own project.
- Ryujinx.Audio.Renderer was renamed Ryujinx.Audio and was refactored because of this.

As a note, games having issues with OpenAL haven't improved and will not
because of OpenAL design (stopping when buffers finish playing causing
possible audio "pops" when buffers are very small).

* Update for latest hexkyz's edits on Switchbrew

* audren: Rollback channel configuration changes

* Address gdkchan's comments

* Fix typo in OpenAL backend driver

* Address last comments

* Fix a nit

* Address gdkchan's comments
2021-02-26 01:11:56 +01:00

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<h1>
<img src="https://i.imgur.com/G6Mleco.png"> Ryujinx
<a href="https://ci.appveyor.com/project/gdkchan/ryujinx?branch=master" target="_blank">
<img src="https://ci.appveyor.com/api/projects/status/ssg4jwu6ve3k594s/branch/master?svg=true">
</a>
<a href="https://discord.gg/Ryujinx">
<img src="https://img.shields.io/discord/410208534861447168.svg">
</a>
</h1>
<p align="center">
<i>An experimental Switch emulator written in C#</i><br />
<br />
<img src="https://raw.githubusercontent.com/Ryujinx/Ryujinx-Website/master/static/public/shell_fullsize.png">
</p>
<h5 align="center">
As of February 2021, Ryujinx has been tested on over 3,200 titles: ~2,500 boot past menus and into gameplay, with approximately 1,700 of those being considered playable. See the compatibility list <a href="https://github.com/Ryujinx/Ryujinx-Games-List/issues" target="_blank">here</a>.
</h5>
## Usage
To run this emulator, we recommend that your PC have at least 8GB of RAM; less than this amount can result in unpredictable behavior and may cause crashes or unacceptable performance.
See our [Setup & Configuration Guide](https://github.com/Ryujinx/Ryujinx/wiki/Ryujinx-Setup-&-Configuration-Guide) on how to set up the emulator.
## Latest build
These builds are compiled automatically for each commit on the master branch. While we strive to ensure optimal stability and performance prior to pushing an update, our automated builds **may be unstable or completely broken.**
The latest automatic build for Windows, macOS, and Linux can be found on the [Official Website](https://ryujinx.org/download).
## Building
If you wish to build the emulator yourself you will need to:
**Step one:** Install the X64 version of [.NET 5.0 (or higher) SDK](https://dotnet.microsoft.com/download/dotnet/5.0).
**Step two (choose one):**
**(Variant one)**
After the installation of the .NET SDK is done; go ahead and copy the Clone link from GitHub from here (via Clone or Download --> Copy HTTPS Link. You can Git Clone the repo by using Git Bash or Git CMD.
**(Variant two):**
Download the ZIP Tarball. Then extract it to a directory of your choice.
**Step three:**
Build the App using a Command prompt in the project directory. You can quickly access it by holding shift in explorer (in the Ryujinx directory) then right clicking, and typing the following command:
Run `dotnet build -c Release` inside the Ryujinx project folder to build Ryujinx binaries.
Ryujinx system files are stored in the `Ryujinx` folder. This folder is located in the user folder, which can be accessed by clicking `Open Ryujinx Folder` under the File menu in the GUI.
## Features
- **Audio**
Audio output is entirely supported, audio input (microphone) isn't supported. We use C# wrappers for [OpenAL](https://openal-soft.org/), and [libsoundio](http://libsound.io/) as the fallback.
- **CPU**
The CPU emulator, ARMeilleure, emulates an ARMv8 CPU and currently has support for most 64-bit ARMv8 and some of the ARMv7 (and older) instructions, including partial 32-bit support. It translates the ARM code to a custom IR, performs a few optimizations, and turns that into x86 code.
Ryujinx also features an optional Profiled Persistent Translation Cache, which essentially caches translated functions so that they do not need to be translated every time the game loads. The net result is a significant reduction in load times (the amount of time between launching a game and arriving at the title screen) for nearly every game. NOTE: this feature is now enabled by default in the Options menu > System tab. You must launch the game at least twice to the title screen or beyond before performance improvements are unlocked on the third launch! These improvements are permanent and do not require any extra launches going forward.
- **GPU**
The GPU emulator emulates the Switch's Maxwell GPU using the OpenGL API (version 4.4 minimum) through a custom build of OpenTK. There are currently four graphics enhancements available to the end user in Ryujinx: disk shader caching, resolution scaling, aspect ratio adjustment and anisotropic filtering. These enhancements can be adjusted or toggled as desired in the GUI.
- **Input**
We currently have support for keyboard, mouse, touch input, JoyCon input support emulated through the keyboard, and most controllers. Controller support varies by operating system, as outlined below.
Windows: Xinput-compatible controllers are supported natively; other controllers can be supported with the help of Xinput wrappers such as x360ce.
Linux: most modern controllers are supported.
In either case, you can set up everything inside the input configuration menu.
- **DLC & Modifications**
Ryujinx is able to manage add-on content/downloadable content through the GUI. Mods (romfs and exefs) are also supported and the GUI contains a shortcut to open the respective mods folder for a particular game.
- **Configuration**
The emulator has settings for enabling or disabling some logging, remapping controllers, and more. You can configure all of them through the graphical interface or manually through the config file, `Config.json`, found in the user folder which can be accessed by clicking `Open Ryujinx Folder` under the File menu in the GUI.
## Compatibility
You can check out the compatibility list [here](https://github.com/Ryujinx/Ryujinx-Games-List/issues).
Don't hesitate to open a new issue if a game isn't already on there!
## Help
If you are having problems launching homebrew or a particular game marked status-playable or status-ingame in our compatibility list, you can contact us through our [Discord server](https://discord.gg/Ryujinx). We'll take note of whatever is causing the app/game to not work, put it on the watch list and fix it at a later date.
If you need help with setting up Ryujinx, you can ask questions in the #support channel of our [Discord server](https://discord.gg/Ryujinx).
## Contact
If you have contributions, need support, have suggestions, or just want to get in touch with the team, join our [Discord server](https://discord.gg/Ryujinx)!
If you'd like to donate, please take a look at our [Patreon](https://www.patreon.com/ryujinx).
## License
This software is licensed under the terms of the MIT license.
The Ryujinx.Audio project is licensed under the terms of the LGPLv3 license.
This project makes use of code authored by the libvpx project, licensed under BSD and the ffmpeg project, licensed under LGPLv3.
See [LICENSE.txt](LICENSE.txt) and [THIRDPARTY.md](Ryujinx/THIRDPARTY.md) for more details.
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