Spooks
b4b95014f1
* Boot compatibility fixes for UE titles, GUI toggles, and DeS render/boot work Checkpoint of the Monster Truck Championship and Demon's Souls boot work. Each piece is independently useful and verified against the titles. - playgo: scePlayGoGetLocus now returns BAD_CHUNK_ID for chunk ids outside the known set, matching real firmware. Titles enumerate chunk ids until that error; answering OK for every id made the scan wrap the ushort range and spin forever. Missing-sidecar and no-app0 fallbacks report a fully-installed single chunk 0 so scePlayGoOpen keeps succeeding. - kernel: restore the SHARPEMU_WRITABLE_APP0 opt-in. Unpackaged UE dumps write their Saved tree under /app0 during PS5 component init and treat the denial as a fatal boot error. - pad: accept handle 0 as the primary pad across all pad calls. Real firmware hands out small non-negative handles and some titles read state with handle 0. - bthid: env-gated experiment hooks for the Thrustmaster wheel middleware investigation (fail-only-RegisterCallback modes and a synthetic enumeration callback with a zeroed event struct). All default off. - gui: add SHARPEMU_LOG_IO and SHARPEMU_WRITABLE_APP0 toggles to the Environment tab. - videoout: per-swapchain-image render-finished semaphores (the shared semaphore raced the swapchain); whole-mip-chain layout init for offscreen guest images (sampled binds read mips stuck in Undefined); GPU-resident texture availability now canonicalizes through the texture format table and accepts compatibility-class aliases, cutting per-frame CPU texture re-reads (143 GB -> 55 GB per 300 s in Demon's Souls, 0.2 -> 0.5 fps). - hle: add sceSystemServiceGetNoticeScreenSkipFlag, sceSystemServiceGetMainAppTitleId (title id published from the runtime), and sceNpWebApi2CreateUserContext (refuses so the online layer backs off). - rtc: SHARPEMU_RTC_PROBE_RANGE diagnostic dumps the code around a busy-wait caller of sceRtcGetCurrentTick once; costs nothing when unset. * [ShaderCompiler] Fix VReadlaneB32 scalar destination field The scalar destination lives in the low vdst byte (bits 0-7); it was read from bits 8-14, the VOP3B carry-out field readlane does not have, sending every readlane result to s0. Verified against raw gfx10 encodings and LLVM's assembler tests (v_readlane_b32 s5, v1, s2 -> low byte 0x05). * [VideoOut] Survive device loss and flip-order asserts without dying Two ways a frame could take down the whole presenter: - Device loss between any two Vulkan calls in a frame unwound the window thread, and the Dispose-time fence check then threw again, masking the original error. Catch the loss at the frame boundary, retire presentations and guest submissions whose fences can never signal, and keep the window loop pumping so the game (audio, logic) carries on. - The ordered-flip capture invariant is violated ~100 times per run by Demon's Souls (PPSA01342); on debug builds the Debug.Assert fail-fasts the process with nothing in the log. Downgrade it to a once-per-version warning until the capture/wait ordering is understood. * Fix Dead Cells shader cache regression --------- Co-authored-by: StealUrKill <35749471+StealUrKill@users.noreply.github.com>
SharpEmu
An experimental PlayStation 5 emulator for Windows, Linux and macOS.
Join our Discord for development updates, compatibility discussions, support, and community chat.
Note
SharpEmu supports Windows x64, Linux x64, and macOS x64. Apple Silicon Macs can run the macOS x64 build through Rosetta 2.
Warning
SharpEmu is an experimental PS5 emulator developed from scratch in C#. The current focus is on accuracy and infrastructure setup rather than game-specific compatibility.
Info
SharpEmu is an emulator project currently in its early stages of development.
This project is developed purely for research and educational purposes. There are no commercial goals associated with it. We enjoy learning about system architecture and reverse engineering.
SharpEmu focuses exclusively on the PlayStation 5.
Our goal is not to emulate PS4 games, as there is already an excellent emulator dedicated to that platform: ShadPS4.
Status
The emulator can currently load the eboot.bin of real games, execute native CPU instructions, and partially handle kernel-related functionality. However, several critical components are still missing.
Current capabilities include:
- Loading
eboot.binand.elffiles - Executing native CPU instructions
- Reading basic game metadata (title, version, etc.)
- Loading system modules (
prx/sys_module) - Partial support for some kernel functions
FiberandAMPRexports- PlayGo scenarios
- Initial loading game files
- Shader/resource submits and AGC initial
- Video outputs in some games
Some games have reached like sceVideoOut and AGC stages.
SharpEmu supports Windows, Linux, and macOS hosts. Video output uses Vulkan on Windows and Linux, and MoltenVK on macOS. Platform support is still experimental, so compatibility and performance vary by game, operating system, and GPU driver.
Using
Download the release archive for your operating system, extract it, and launch
SharpEmu with the path to a legally obtained game's eboot.bin.
Windows PowerShell:
.\SharpEmu.exe "C:\path\to\game\eboot.bin" 2>&1 |
Tee-Object -FilePath "SharpEmu.log"
Linux and macOS:
chmod +x ./SharpEmu
./SharpEmu "/path/to/game/eboot.bin" 2>&1 |
tee SharpEmu.log
A Vulkan-capable GPU and current graphics driver are required. The macOS release includes the MoltenVK Vulkan implementation.
Games Tested
-
Demon's Souls Remake
- Demon's Souls [PPSA01341]
- Demon's Souls is now video loop. Shaders are ready to be converted to SPIR-V/Vulkan. We are continuing our work on this.
-
Poppy Playtime Chapter 1
-
SILENT HILL: The Short Message
-
Dreaming Sarah
- Dreaming Sarah [PPSA02929]
- Real texture rendering for this game;
Important
This project does not support or condone piracy.
All games used during development and testing are dumped from consoles that we personally own.
Users are expected to use legally obtained copies of their games.
Build
- Install the .NET SDK version specified in
global.json. - Clone the repository:
git clone https://github.com/sharpemu/sharpemu.git - Open the solution file (
SharpEmu.slnx) in VSCode. - Build the project:
dotnet buildordotnet publish - Build artifacts will be located in the
artifactsdirectory.
Disclaimer
SharpEmu is an experimental emulator intended for research and educational purposes.
This project does not contain any copyrighted system firmware, game data, or proprietary PlayStation assets.
Special Thanks
The following projects were extremely helpful during development:
-
ShadPS4
Helped with understanding the basic architecture of the PlayStation 4. -
Kyty
One of the few PS5 emulator projects available and very useful for studying native code execution. -
Ryujinx
Provided valuable references for filesystem handling and low-level C# implementation patterns.
License
Contributing
Before opening an issue or pull request, please read our contribution guidelines:
The guide covers:
- Coding style and formatting
- AI-assisted contributions
- Pull request expectations
- Testing guidelines
- Legal and reverse engineering policy