9.20.1

Core

• GPU particles: re-bake gradient lookup textures in place for value edits - by increasinglyHuman (#18787)
• Fix Zstd-compressed UASTC textures failing to load (bytesPlane = 0) - by alexchuber (#18793)
• Fix NativeEngine command scope leaking when a render throws - by bkaradzic-microsoft (#18789)
• Fix WebGPU vertex layout pipeline cache collisions - [Bug Fix] by Popov72 (#18791)
• Feat: Stream Gaussian Splatting LOD as a part of a compound mesh - by raymondyfei (#18774)
• Fix: texture view leak on WebGPU backend - by raymondyfei (#18784)
• KHR_interactivity: importer update to the latest spec (refs, events, pointer selection, math ops) - by SergioRZMasson (#18615)
• feat(XR): support CPU depth sensing on WebGPU - [New Feature] by RaananW (#18782)
• Fix GreasedLine corrupting the shared TmpVectors scratch slot and Vector3.UpReadOnly - by bkaradzic-microsoft (#18781)
• Disable Space Warp before session creation - [Bug Fix] by RaananW (#18780)
• feat(XR): add WebGPU quad layer path - [New Feature] by RaananW (#18779)
• fix(XR): clear WebGPU AR projection textures - [Bug Fix] by RaananW (#18778)
• Fix Tools.LoadScript treating ES module source as a URL on Babylon Native - by bkaradzic-microsoft (#18776)

Inspector

• Fix Reflector bridge relay dropping and crashing on client messages - [Bug Fix] by ryantrem (#18800)
• Inspector v2: sort particle gradients before refresh - [Bug Fix] by VicenteCartas (#18794)

Loaders

• Make the glTF loader's unique root url actually unique - [Bug Fix] by bghgary (#18798)
• Feat: Stream Gaussian Splatting LOD as a part of a compound mesh - by raymondyfei (#18774)
• KHR_interactivity: importer update to the latest spec (refs, events, pointer selection, math ops) - by SergioRZMasson (#18615)

Sandbox

• KHR_interactivity: importer update to the latest spec (refs, events, pointer selection, math ops) - by SergioRZMasson (#18615)

Viewer

• Enable Babylon Lite device-lost recovery in the Lite Viewer - [New Feature] by ryantrem (#18785)