MoonPad

A Moonlight-based game-streaming client for iOS, focused on PC emulator streaming. Forked from VoidLink, which was itself forked from the upstream moonlight-iOS.

What MoonPad adds on top of VoidLink

• Platform resolution presets — in place of the generic 720p/1080p/4K selectors, a Platform mode exposes per-console base resolutions (PS1 320×240, 3DS 400×480 stacked) with a 1×–4× scale multiplier. Safe Area, FullScr/Window, and Custom remain for non-emulator use.
• Emulator controller skins — a runtime skin system renders a console-themed overlay on top of the stream, with per-button hit areas, thumbsticks, extended-edge hit testing, and per-screen video regions. Bundled: PS1.manicskin, PS1_FLEX.manicskin, ModernBlack.manicskin (3DS).
• Dual-screen rendering for Nintendo 3DS — the streamed composite frame is split into top and bottom screens using the skin's screens[] layout. An auxiliary AVSampleBufferDisplayLayer receives the same decoded sample buffer queue as the primary, cropped and positioned to its region.
• Per-region touch modes — top screen acts as a relative-mouse trackpad; bottom screen acts as an absolute-position touchscreen with left-click press/release, so Azahar / Citra / Lime3DS register it as a native 3DS stylus touch.
• Canonical source layouts — MoonPad pins the expected on-wire frame layout per platform, so a third-party skin's inputFrame values can't silently mismap when the PC-side capture geometry doesn't match.

Quick start — streaming a 3DS emulator

1. On the PC, install a virtual display driver (e.g. VirtualDisplayDriver) and add a 1600×1920 portrait display.
2. In Azahar / Citra / Lime3DS, enable Use Custom Layout under Graphics, with:
   • Top screen: x=0, y=0, width=1600, height=960
   • Bottom screen: x=160, y=960, width=1280, height=960
3. Move the emulator to the virtual display and fullscreen it.
4. Configure Sunshine to capture that display.
5. In MoonPad: Settings → Resolution → Platform → 3DS → 4× (or Custom with 1600×1920).

See the Delta-compatible skin format docs for authoring your own skins — MoonPad's loader accepts both .manicskin (Manic Emu) and .deltaskin (Delta) archives.

Fork chain

moonlight-iOS       (Moonlight Game Streaming Project)
      │ fork
VoidLink            (True砖家 @ Bilibili + community)
      │ fork
MoonPad             (this project)

Attribution

• moonlight-iOS — the Moonlight Game Streaming Project supplies the core NVIDIA GameStream / Sunshine client, the decoding pipeline, the H.264/HEVC/AV1 path, and the overwhelming majority of the codebase under MoonPad. MoonPad is a derivative work.
• VoidLink — True砖家 (True Zhuanjia) and the VoidLink contributors reworked the UI, added the on-screen controller / widgets / custom-OSC editor, and built the initial skin loader (SkinController/) that MoonPad extends. Most of MoonPad's plumbing is their work.
• Controller skin format — inspired by and directly interoperable with the skin format used by Delta (Riley Testut) and Manic Emu, both iOS emulator front-ends. MoonPad's parser reads their info.json layout (including extendedEdges, multi-screen screens, directional / touchScreenX/Y inputs) and PDF/PNG assets natively.
• Bundled skins
  • PS1.manicskin, PS1_FLEX.manicskin — shipped with VoidLink.
  • ModernBlack.manicskin — 3DS skin by stars33k, originally distributed as a Delta-compatible .deltaskin.
• Submodules — moonlight-common-c, ENet, ImGui, X1Kit per upstream Moonlight.

License

GPLv3, inherited from moonlight-iOS. See LICENSE.txt. As a derivative work of a GPLv3 project, MoonPad is itself GPLv3, and any further forks must preserve the license and this attribution chain.

Contributors

From this fork (MoonPad):

• @raphasouthall

From the upstream VoidLink fork:

• @TrueZhuangJia
• @stefanilijev97
• @Acaki
• @seastwood
• @Danos0100
• @xzzpig
• @King0fSpace

From moonlight-iOS: full contributor list.