AnyPS5/docs/dev/debt/libSceAudioPropagation.md

libSceAudioPropagation technical debt

Silent stubs

• libSceAudioPropagation lacks acoustic propagation: attributes have no effect, sources expose no paths or rays, rendering preserves the destination mix without adding path contributions, and allocated CPU work memory is mostly unused. Ray results and audio paths accept empty lists and throw otherwise; calculation returns initial native validation errors and throws for unsupported propagation. Room, portal, source and material handles are tracked, but destruction after their system is destroyed silently succeeds without native lifetime semantics being confirmed. Occlusion, reflections and reverb are absent.

Unknown function info

• sceAudioPropagationSourceSetAudioPath: the native path lookup and update confirm a 64-bit path handle, a read-only 224-byte path description and a float gain in XMM0. The description contains four 48-byte points, a point count and flags; each point contains a descriptor, room handle, gain and three position floats. The last eight bytes of each point and of the description are not consumed by these paths and remain opaque. Protected implementation remains unchanged; allocation, ownership and rendering are not implemented.
• libSceAudioPropagation: system options use a recovered 56-byte record; the field at byte 24 and final eight bytes remain semantically unresolved. CPU memory requirements and option limits are recovered; GPU memory queries throw because their platform-specific runtime condition is unresolved. Descriptor validation, ray ownership and path generation are unimplemented. Native rendering accepts multiple mutable records; the host supports only format 2 and writes one silent frame without native accumulation. Frame capacity and source-count limits follow the recovered options. Other formats and native validation precedence remain unimplemented.
• Initialization exports ending in Init, plus sceAudioPropagationSystem, are absent from the supplied native module and retain unresolved signatures. Query, locking, enumeration and report callback signatures are recovered; diagnostic layouts are recovered, but source attributes 2/3 and the constant-one fields still lack semantic names. The final system word and the fourth position/direction words have no confirmed semantics.