ChonkyStation4 est un émulateur de PlayStation 4 open‑source développé comme projet personnel par liuk7071 pour le plaisir et l’apprentissage du développement logiciel.
Le code est publié sous licence GPL‑3.0 et le projet est accessible gratuitement sur GitHub.
Il s’agit d’un logiciel en cours de développement qui peut déjà démarrer quelques jeux commerciaux, mais il n’est pas encore complet ou stable pour une utilisation grand public.
Le dépôt contient principalement du code en C++, ainsi que des fichiers de configuration et des dépendances nécessaires à la compilation.
Pour utiliser l’émulateur, il faut placer ses modules de firmware décryptés dans un dossier système spécifique avant de lancer un jeu via le fichier exécutable.
Les changement sont les suivants:
Highlights
– The PS4 system menu (VSH) now boots, but it is not functional yet
– Compute shaders: DispatchDirect PM4 packet is now handled as well as async compute queues
– Structured shader control flow: the shader decompiler can now recover if/else and loop constructs from shader branches
– Significant GPU performance improvements: GPU-heavy scenes are now up to 2 or 3 times as fast
– Basic networking: TCP and UDP sockets are now implemented. libSceHttp also works. Initial work for a PSN replacement (« ChonkyNet ») has been done
Shader Decompiler
– Compute shaders are now handled
– Branch instructions are translated to if/else and loop blocks
– Some data store (GDS/LDS) instructions are now handled
– Several other instructions have been implemented
– Vertex shaders without fetch shaders are handled properly
Vulkan Backend
– Allow up to 3 frames in flight
– Buffer/texture cache performance improvements (buffers are now tracked with page granularity)
– Compute correct image size for tiled images
– Fix stencil
– Fix some validation errors
– Other performance improvements
– Integrate the NVIDIA Nsight Aftermath SDK to generate GPU crash dumps (enable via the ENABLE_NVIDIA_AFTERMATH CMake option)
– Implement a basic texture garbage collector and fix other memory leaks
– Basic handling of bindless descriptors
– You can know select what GPU device to use through a CLI command (–gpu)
OS HLE
– Several more HLE functions have been implemented for all libraries
– TLS fixes
– Implement/stub necessary system libraries required for VSH to boot
– sceKernelDlsym and other functions for runtime loading and usage of sprx libraries now work correctly
– sceNet TCP and UDP sockets are now implemented, allowing LLE libSceHttp to work
– Implement sceZlib
Misc
– New command line interface added – run « ChonkyStation4 –help » for more info
– User management
– Begin implementing a replacement PSN server (« ChonkyNet »), not public yet
– Add an experimental red-zone fix patch (currently only used for CUSA00107)
