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ci: run GPU job on Mesa lavapipe instead of SwiftShader #70
Description
Description
The advisory GPU job runs Chromium on SwiftShader and times out.
Motivation
SwiftShader is deprecated in Chromium. three.js runs WebGPU e2e on Mesa lavapipe (software Vulkan) headed under xvfb.
Constraints
Local Mac behaviour (incl. NTC_GPU_BACKEND=metal) unchanged. Assertions not weakened.
Acceptance criteria
- CI GPU job installs mesa-vulkan-drivers + xvfb, uses lavapipe ICD
- CI log shows the WebGPU adapter is lavapipe/llvmpipe
- GPU job passes
Activity
bhouston commentedon Nov 6, 2026
Closing with #71. lavapipe can't be selected through stock Chrome's WebGPU, and the CI GPU job is disabled on main (c00adf5), so CI no longer runs SwiftShader.