WPT details: WebGPU/WGSL have a conformance test suite (https://github.com/gpuweb/cts) that is regularly pulled into Chromium and part of the testing of Dawn/Tint in Chromium. While the CTS can be embedded in WPT, the WebGPU team opted to keep it separate in Chromium testing to use a customized harness for robustness and performance. Tests added here: https://github.com/gpuweb/cts/pull/4662
Allows the use of 64-bit atomic minimum and maximum operations on `atomic<vec2u>` in WGSL. This provides WebGPU shader authors with a way to implement certain algorithms that use 64-bit atomics without requiring full support for 64-bit integers.
This provides WebGPU shader authors with a way to implement certain algorithms that use 64-bit atomics without requiring full support for 64-bit integers. Not every device that supports 64-bit atomics can support every atomic operation on these types, so this feature is scoped to the min and max operations to deliver broadest reach.
Explainers: https://github.com/gpuweb/gpuweb/issues/5071