What's New in WebGPU (Chrome 145)

Chrome 145 introduces the WGSL subgroup_uniformity extension, which improves uniformity analysis at the subgroup level, allowing more values to be considered subgroup-uniform. An experimental synchronous buffer mapping feature (mapSync()) is now available in workers to reduce friction between WebGPU and application code. Dawn updates include feature replacements (TextureFormatTier1 superseding R8UnormStorage), nightly binary releases on GitHub, and ExternalTexture support in Emdawnwebgpu.