🧪 WebXR Feature Combinator

Isolated reproducer for the camera-access crash investigation. Pick a feature combination, tap Start AR, and observe. Checkbox state persists across reloads so a tab crash does not erase your last selection. See 2026-04-22-camera-access-reproducer-plan.md.

Required feature (exactly one) hit-test — matches upstream example local-floor — matches our app

Optional features camera-access dom-overlay (root = document.body) depth-sensing (cpu-optimized, luminance-alpha/float32)

Workarounds (page reloads on toggle) Delete XRWebGLBinding.prototype.createProjectionLayer and XRRenderState.prototype.layers at script init (forces three.js to XRWebGLLayer).

XRSessionInit payload preview

Log