Radix sort hangs / crashes GPU process on Chrome / Mac / Apple Silicon

[kenrussell]

The default bicycle scene doesn't render on Chrome Mac on Apple Silicon devices. After the loading phase, Chrome's GPU process locks up, prevents interaction with the browser's windows, and makes the machine unresponsive for some time. Generally after ~20 seconds Chrome's GPU process is killed and restarted, and the machine recovers.

Pair programming with @shrekshao isolated the problem to the radix sort compute shader. The use-sort-lib branch runs on this hardware, though with some flickering.

Attached is Chrome's about:gpu from an affected system. I think it's important to debug this further, since this viewer project can be considered a representative application, and this might be uncovering a portability problem with WebGPU or WGSL.

about-gpu-2024-10-10T23-11-49-150Z.txt