Removes the Windows-only BCrypt dependency from XeCryptBnQwNeRsaPubCrypt
and replaces it with a portable modular exponentiation implementation
using 64-bit arithmetic, enabling RSA signature verification on all
platforms. Adds Catch2 tests validating the implementation with a
2048-bit RSA key.
Adds async_shader_compilation cvar (default true) that forces new
pipelines to be created async from the main thread, skips draws entirely
on D3D12 and on vulkan replaces pixel shader with placeholder until the
real one is ready. Causes some visual artifacts on first load but
greatly reduces load times and stutter.
BaseHeap::Dispose() walks the page table and calls
DeallocFixed(addr, 0, kRelease) for every allocated page region.
These addresses are within file-backed view mappings (i.e. guest memory).
On Windows, VirtualFree on file-mapped pages silently returns FALSE.
On POSIX, the code hit assert_always() and crashed. Changed to return false
to match Windows behavior.
Memory leaks from munmap(addr, 0):
Callers passed length=0 to DeallocFixed(kRelease). On Windows this works because
VirtualFree(addr, 0, MEM_RELEASE) means "release the entire region" — Windows
ignores the length parameter for MEM_RELEASE and always frees the whole
allocation. On POSIX, munmap(addr, 0) fails with EINVAL, so the memory was
silently leaked every time.
On Linux, these instructions appear to use A format (FRA, FRB, FRT)
instead of the standard X format (RA, RB, RT). Need to verify if this
is needed on Windows or is Linux specific.
Some games persist BGM volume through their own save files but never
call XMPSetVolume. Add a TitlePatch system that intercepts NtReadFile/
NtWriteFile to apply game-specific logic as well as logic to identify
the memory location that the volume data is read into and monitor that
memory location for changes, updating XMP player volume if it changes
during gameplay.
Includes patches for known games with this issue:
Dead or Alive Xtreme 2 (544307D2), PGR4 (4D5307F9) and PGR3 (4D5307D1)
File-scope static initialization order is undefined across translation
units. Code that acquires the global critical region during early startup
could run before the mutex constructor, operating on uninitialized state.
A function-local static is constructed on first use, guaranteeing the
mutex is initialized before any caller can access it.
The decoder gate required a full frame of free blocks (4 mono / 8 stereo +
padding) before allowing a decode pass, but Consume() only writes
subframe_decode_count blocks per call. Games like TGM Ace with
subframe_decode_count=2 on a small ring buffer could never meet the old
threshold, causing a permanent decoder stall.
