Psy-Cross (Psy-X)

Compatibility framework for building and running Psy-Q SDK - based Playstation games across other platforms

Implementation details

• High-level Playstation API reimplementation which translates it's calls into modern/compatible APIs
• Psy-Q - compatible headers
• Implements Geometry Transformation Engine (GTE) in software and adapts it's macros and calls
• Optimized Precise GTE Vertex Cache with modern 3D hardware perspective transform and Z-buffer support (PGXP-Z)
• LibSPU with ADPCM decoding on OpenAL (SPU-AL)
• LibGPU with Playstation-style polygon and image handling
• LibCD with ISO 9660 BIN/CUE image support by Playstation CD API
• Already proven to be 95% compatible with the Psy-Q Playstation SDK - Psy-X game look almost identical to the Playstation game
• You can bring your game to Web with Emscripten support

Folder structure

• src/gpu: PSX GPU linked lists and polygon handling routines
• src/gte: PSX GTE and PGXP-Z implementation
• src/render: OpenGL renderer and PSX VRAM emulation
• src/pad: Controller handling
• src/psx: Implementations of PsyQ - compatible libraries (libgte, libgpu, libspu, libcd ...)
• include/psx: Headers of PsyQ - compatible libraries (libgte, libgpu, libspu, libcd ...)
• include/PsyX: PsyCross interfaces (window management, configuration, renderer, PGXP-Z)

Dependencies

• OpenAL-soft (1.21.x or newer)
• SDL2 (2.0.16 or newer)

TODO

• CMake dependency/build scripts
• Add some missing LibGTE functions
• MDEC implementation in LibPress
• CD Audio/XA decoding and playback
• SPU Attack-Decay-Sustain-Release (ADSR) support, maybe through own mixer?

Credits

• SoapyMan - more GTE functions, SPU-AL, PGXP-Z
• Gh0stBlade - original source/base (link)