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reims-vgpu
reims-vgpu is an experimental virtual GPU for macOS guests that uses QEMU to decode the guest's GPU command stream and execute it through Metal or Vulkan, leveraging the built-in AppleParavirtGPU driver without requiring custom kexts.
Stars
115
7-day growth
No data
Forks
5
Open issues
3
License
LGPL-3.0
Last updated
2026-07-27
Why it is worth attention
It enables accelerated graphics in macOS VMs without modifying the guest OS, by implementing the device side of Apple's paravirtual GPU interface and translating commands via Metal or Vulkan, which is a novel approach in the open-source virtualization space.
Who it is for
- Developers working on GPU virtualization for macOS
- QEMU contributors interested in GPU device models
- Researchers exploring Metal-to-Vulkan translation
- Hobbyists experimenting with macOS VMs on non-Apple hardware
Use cases
- Running macOS 13 Ventura guests with hardware-accelerated graphics on Linux or Apple Silicon hosts
- Testing and debugging Metal/Vulkan translation via metal2vulkan
- Developing and validating custom GPU command stream decoders
- Evaluating snapshot-revert workflows for reproducible VM testing
Strengths
- No custom guest driver or kext installation required—uses existing AppleParavirtGPU.kext
- Supports three distinct host/guest/backend pathways (x86+Linux+Vulkan, arm64+macOS+Metal, arm64+macOS+Vulkan)
- Provides snapshot-revert boot scripts that protect golden images from corruption
- Open source under LGPL-3.0-or-later with a modular Rust codebase and vendored QEMU shims
Considerations
- Alpha stage—ABI, behavior, and supported pathways may change without notice
- Requires significant host configuration (KVM, Vulkan/Metal stacks, custom QEMU build)
- Not production-ready; focused on experimentation and bring-up
README quick start
Getting started
Description
reims-vgpu is an experimental virtual GPU for macOS guests
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