Rutabaga Virtual Graphics Interface
The Rutabaga Virtual Graphics Interface (VGI) is a cross-platform abstraction for GPU and display virtualization. The virtio-gpu context type feature is used to dispatch commands between various Rust, C++, and C implementations. The diagram below does not exhaustively depict all available context types.
Rust API
Although hosted in the crosvm repository, the Rutabaga VGI is designed to be portable across VMM implementations. The Rust API is available on crates.io.
Rutabaga C API
The following documentation shows how to build Rutabaga's C API with gfxstream enabled, which is the common use case.
Build dependencies
sudo apt install libdrm libglm-dev libstb-dev
Build AEMU base
git clone https://android.googlesource.com/platform/hardware/google/aemu
cd aemu/
cmake -DAEMU_COMMON_GEN_PKGCONFIG=ON \
-DAEMU_COMMON_BUILD_CONFIG=gfxstream \
-DENABLE_VKCEREAL_TESTS=OFF -B build
cmake --build build -j
sudo cmake --install build
Build gfxstream
git clone https://android.googlesource.com/platform/hardware/google/gfxstream
cd gfxstream/
meson setup -Ddefault_library=static build/
meson install -C build
Build FFI bindings to Rutabaga
cd $(crosvm_dir)/rutabaga_gfx/ffi/
make
sudo make install
Guest-side gfxstream libraries
If your VMM boots to a Linux guest, it's possible to run gfxstream with that.
git clone https://android.googlesource.com/platform/hardware/google/gfxstream
cd gfxstream/guest
meson setup build/
meson install -C build
Some headless Vulkan tests (deqp-vk, vulkaninfo) should work after that, but others may not
(such as vulkan-samples).