set_native_priority used pthread_setschedparam with sched_priority. Android
threads run under SCHED_OTHER, where sched_priority must be zero and
sched_get_priority_max returns zero, so the call succeeded and changed nothing.
The RSX thread asks for a boost when it starts and was still measured at nice 0,
taking about 5300 involuntary preemptions a second, roughly 130 per frame, from
the PPU, SPU and audio threads sharing its cores. It is the thread everything
else waits on.
Under SCHED_OTHER the scheduler weights by nice, which setpriority does set, and
Android gives apps enough RLIMIT_NICE headroom to go negative for their own
threads. Applies -8 for a raise and +8 for a drop, and warns rather than fails
if the headroom is not there.
Modest on purpose: a hint to be scheduled ahead of the other emulator threads,
not a bid to starve them.
Adds an Android build of the RPCS3 core plus a Compose UI, and fixes several
things that stopped it working on ARM64.
Renderer:
- Emit concrete bounds for runtime sized arrays in uniform blocks when
VK_EXT_shader_uniform_buffer_unsized_array is missing. Adreno does not have
the extension, so every game pipeline failed with VK_ERROR_UNKNOWN and only
overlays drew.
- Probe and request that extension properly instead of chaining its feature
struct unconditionally.
- Hand VMA the Vulkan function pointers it needs under VK_NO_PROTOTYPES.
- Rebuild the surface and swapchain when the window is lost instead of killing
the RSX thread.
- Only create a GLES context when the GL renderer is actually selected.
SPU:
- Sum instead of taking an absolute difference in the ARM64 block verification
checksum. The difference collides on the near identical job binaries an SPU
job manager streams through one local store address, so a cached block could
run against another job's code.
Threading:
- Implement thread affinity on Android using sched_setaffinity.
- Add an ARM big.LITTLE core arrangement so SPU and RSX threads land on the
fast cores.
Misc:
- Detect the host CPU for the LLVM JIT instead of pinning cortex-a34.
- Fall back to the default audio device when cubeb cannot enumerate.
- Some SPU programs inexplicably fail to compile when TBL2/TBX2 are used.
- As an insane workaround, first try to compile with TBL2/TBX2, if LLVM crashes while compiling, try to compile the same program without TBL2/TBX2.
jpolo1224
Elad
digant73
Malcolm
Megamouse
luci4
AniandRipleyTom
schm1dtmac
Vestral
DH