2023-05-10 18:08:15 +01:00
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#+TITLE: Nintendo Wii U
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2023-05-11 10:54:03 +01:00
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#+FILETAGS: :guides:emulation:nintendo:
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2023-05-10 10:43:27 +01:00
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#+AUTHOR: bparodi
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We use [[./cemu.org][CEMU]] to emulate the Wii U platform and play the games on the pc.
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The biggest difference compared to other emulators is the workflow to play a
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game:
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- spun up a [[./nus.org][NUS]] downloader that fakes itself as a console
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- download and decrypt the target game
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- load it into CEMU and apply fixes if needed
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** Controllers
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Use SDL api whenever possible. Either use the most recent Playstation
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controllers or one from the 8bitdo line. Xbox controllers don't have support for
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motion control.
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*** Wii U Pro controller
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[[./files/img/wiiupro.jpg][Controller.jpg]]
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*** Wii U Classic controller
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[[./files/img/wiiuclassic.jpg][Controller.jpg]] The Classic Controller is a game controller designed for use with
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the Wii console. It has a similar layout to a traditional gamepad, with two
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analog sticks, a D-pad, four face buttons, and four shoulder buttons. It also
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features a built-in rumble function and can be plugged into a Wii Remote for
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wireless connectivity.
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*** Motion control
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Cemu is capable of emulating motion controls within the Wii U GamePad or a
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Wiimote (MotionPlus model). In order to accomplish that in Cemu, various methods
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can be attempted, including setting up a UDP-based motion server application to
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send the motion data of a real motion-support controller (that Cemuhook's
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GamePad Motion Source API listens to), using the emulated Wiimote Controller API
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in Cemu's input menu in combination with a real Wiimote (MotionPlus model), or
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using a hacky workaround that involves right clicking and dragging within the
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Cemu window.
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** Optimizing CEMU
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For the best performance, we'll be using the Vulkan graphics API. This tends to
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run faster than OpenGL and allows us to use features such as asynchronous shader
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compilation.
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1. open the CEMU main menu
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2. click Options -> General settings on the top bar
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3. navigate to the Graphics tab
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4. change the "Graphics API" to Vulkan if it is not already
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Windows
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Set "VSync" to Match emulated display (Experimental)
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If you use a display with variable refresh rate (G-SYNC), set this to Off instead
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This feature is experimental and may cause issues
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Enable Async shader compiler
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Navigate to the Audio tab
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Under General, change "API" to XAudio2
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*** Asynchronous Shader Compilation
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When running games in Cemu, graphical shaders need to be re-compiled to work on
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a desktop GPU. This can take some time, which causes small stutters in the game
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every time a new one is sent to the emulator.
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Doing this asynchronously allows the emulator to run the process in the
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background. This means that when the shader is first called, it skips being
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rendered to the screen, and is instead stored for the next time it's used,
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providing a much smoother experience.
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*** VSync Matching
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Vulkan also allows us to use a new experimental VSync technique which allows
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Cemu to use the game's built-in frame-pacing instead. This avoids tearing and
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reduces input latency compared to previous methods.
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2023-05-11 10:38:12 +01:00
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** Related articles
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- [[../cemu.org][CEMU]]
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- [[../nus.org][NUS Downloader]]
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