feat(xr): WebGPU texture-array projection and vr-basic gallery refresh#8724
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Prefer texture-array XR projection layers with texture fallback; document frameStart backbuffer sizing for array color targets. Refactor vr-basic to AppBase + createGraphicsDevice, XRSPACE_LOCALFLOOR, Sketchfab xr_gallery room asset with attribution, and desktop camera pose tuning.
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Overview
Improves WebGPU immersive XR presentation by preferring a
texture-arrayprojection layer when the runtime supports it, and refreshes thevr-basicexample for WebGPU-friendly bootstrapping, floor reference space, and a new gallery asset with attribution.Changes:
createProjectionLayerwithtextureType: 'texture-array'first; fall back to'texture'if creation throws.frameStartclarifying that XR array color targets use per-layer width/height for backbuffer sizing.AppBase+AppOptions+createGraphicsDevice(deviceType)(examples iframe WebGPU picker); load XR VR Gallery Space (xr_gallery.glb) with Sketchfab attribution file;XRSPACE_LOCALFLOOR; initial camera pose constants for desktop preview.Public API: None.
Examples:
examples/src/examples/xr/vr-basic.example.mjsexamples/assets/models/xr_gallery.glb,examples/assets/models/xr_gallery.txt(CC BY 4.0, Josh Johanson / Sketchfab link in txt)