jpolo1224
1eb63137e3
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.
ARMSX3
Proof of concept Android port of RPCS3.
This is early work. A game boots and plays, but it is slow and most of it is untested. It is not a usable emulator yet.
Status
Skate 3 boots, loads and reaches gameplay at roughly 20 to 30 fps on a Snapdragon 8 Gen 2. Rendering, audio, touch controls and physical controllers work. Almost nothing else has been tested.
Differences from upstream RPCS3
Some of the fixes here are not in upstream and affect any ARM64 build, not only Android:
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Shaders declared runtime sized arrays inside uniform blocks, which requires VK_EXT_shader_uniform_buffer_unsized_array. Adreno does not support that extension, so every game pipeline failed to compile and nothing rendered. Concrete array bounds are emitted when the extension is missing.
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The ARM64 SPU block verification checksum folded two thirds of every block through an absolute difference. That collides on the near identical job binaries an SPU job manager streams through the same local store address, so a cached block could end up running against another job's code. It sums now.
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Thread affinity was compiled out on Android, and the core had no ARM big.LITTLE topology, so SPU and RSX threads were never placed on the fast cores.
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The LLVM JIT target was pinned to cortex-a34, an in order core from 2016. It detects the host now.
Building
See BUILDING.md.
The Discord Social SDK is proprietary and is not redistributed here. Get it from Discord's developer portal if you want that feature.
License
GPL-2.0-only, the same as RPCS3. See LICENSE. Some files may be licensed differently, check the file headers.
Based on RPCS3, https://github.com/RPCS3/rpcs3