mirror of
https://github.com/jamesstringer90/appsandbox.git
synced 2026-10-22 02:52:49 -05:00
James Stringer
194cadeaa6
- systemd-user environment generator and appsandbox-gpu wrapper both append /usr/lib/wsl/lib to LD_LIBRARY_PATH. ldconfig has the .so.1 entries cached, but the 9P mount is read-only so the unversioned symlinks ldconfig wants to create can't be written. dlopen() of unversioned names (libcuda.so, libnvidia-encode.so, libnvcuvid.so) needs the path on LD_LIBRARY_PATH — without it ffmpeg's h264_nvenc / h264_cuvid plugins fail with 'Cannot load libcuda.so.1'. - setup.sh: symlink /usr/lib/wsl/lib/nvidia-smi to /usr/local/bin so the bare command works without env tweaks. Created unconditionally because the symlink target is resolved at exec time — the file appears under the agent's 9P mount on first boot regardless of when the symlink was created.
57 lines
2.3 KiB
Bash
57 lines
2.3 KiB
Bash
#!/bin/sh
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# appsandbox-gpu — run a command with host-GPU acceleration via /dev/dxg.
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#
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# Probes for the GPU partition device and the custom Mesa build. When both
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# are present, sets the Mesa loader + Vulkan ICD env vars so OpenGL goes
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# through the d3d12 gallium driver and Vulkan goes through the dzn driver,
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# both of which talk to /dev/dxg and run shader workloads on the host GPU.
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#
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# When the VM has no GPU partition attached, this is a no-op pass-through:
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# the command runs with stock Mesa (llvmpipe / lavapipe) unchanged.
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#
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# Usage:
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# appsandbox-gpu <cmd> [args...]
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#
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# Example:
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# appsandbox-gpu glxinfo -B
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# appsandbox-gpu vulkaninfo --summary
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# appsandbox-gpu ./FurMark_GUI
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set -e
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WSL_MESA=/opt/wsl-mesa
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WSL_MESA_LIB="$WSL_MESA/lib/x86_64-linux-gnu"
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WSL_MESA_VK_ICD="$WSL_MESA/share/vulkan/icd.d/dzn_icd.x86_64.json"
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WSL_LIB=/usr/lib/wsl/lib
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if [ -e /dev/dxg ] && [ -d "$WSL_MESA_LIB" ]; then
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# LD_LIBRARY_PATH covers two needs:
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# - $WSL_MESA_LIB picks Mesa's d3d12 gallium + dzn Vulkan over stock.
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# - $WSL_LIB lets apps that dlopen the WSL NVIDIA userspace libs by
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# unversioned SONAME (libcuda.so, libnvidia-encode.so, libnvcuvid.so)
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# find them. ldconfig caches only the .so.1 entries — the 9P mount
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# is read-only so the unversioned symlinks can't be created.
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# NVENC (h264_nvenc, hevc_nvenc) + NVDEC (h264_cuvid, etc.) need this.
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export LD_LIBRARY_PATH="$WSL_MESA_LIB:$WSL_LIB${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
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export __GLX_VENDOR_LIBRARY_NAME=mesa
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# Both env vars are needed:
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# GALLIUM_DRIVER controls direct gallium selection (used by GLX/X11).
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# MESA_LOADER_DRIVER_OVERRIDE controls the DRI loader (used by EGL,
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# Wayland clients). Setting one without the other gives accelerated
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# GLX but llvmpipe-on-EGL (or vice versa).
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export GALLIUM_DRIVER=d3d12
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export MESA_LOADER_DRIVER_OVERRIDE=d3d12
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# Vulkan: load only the microsoft-experimental (dzn) ICD. Without
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# VK_DRIVER_FILES set, the loader would also pick up lavapipe + Ubuntu's
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# stock ICDs (intel/nouveau/etc) and adapter selection is unreliable.
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# File is dzn_icd.x86_64.json — the wsl-mesa README mentions
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# microsoft_icd.x86_64.json but Mesa 25.3 ships it as dzn_icd.
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if [ -e "$WSL_MESA_VK_ICD" ]; then
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export VK_DRIVER_FILES="$WSL_MESA_VK_ICD"
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fi
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fi
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exec "$@"
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