Read-only packs of encoded cache entries are mapped once at startup from
the shader cache prebuilt directory (plus ANYPS5_PREBUILT_SHADER_CACHE,
opt out with ANYPS5_NO_PREBUILT_SHADERS). Disk loads try packs and loose
prebuilt folders first and fall through to the writable cache and the
compiler on a miss. Keys, source version, format and payload checksums
are validated exactly as for writable entries, and interval logs report
prebuilt hits, misses, rejections and load timings.
Depends on the uncached compile entry point only through the offline
tool that produces these packs; the loader itself is independent.
Romans Pokrovskis