Bug 290198 – [WebGPU] On M1 MBP - https://threejs.org/examples/webgpu_mesh_batch.html encounters MTLCommandBufferErrorDomain Code=1 "Internal Error (00000100:Internal Error)

• Status: RESOLVED
• Resolution: FIXED
• Component: WebGPU

[Mike Wyrzykowski]

Opening https://threejs.org/examples/webgpu_mesh_batch.html and increasing the count from 512 -> 2048 results in the following error:

```
 MTLCommandBufferErrorDomain Code=1 "Internal Error (00000100:Internal Error)
```

[Radar WebKit Bug Importer]

<rdar://problem/147596873>

[Mike Wyrzykowski]

This works on my phone, it seems M1 Mac specific. Or possibly the gpu architecture of M1 Mac specific

[Mike Wyrzykowski]

This is another issue related to memory barriers it seems. Skipping the memory barriers and the site works correctly. Need to figure out if there is a limit to the number of memory barriers on M1 Macs

[Mike Wyrzykowski]

This might be fixed on latest betas of macOS Sequoia

[Mike Wyrzykowski]

This continues to reproduce on M1 on Safari Technology Preview

[Mike Wyrzykowski]

Potentially due to https://bugs.webkit.org/show_bug.cgi?id=289147 - checking

[Mike Wyrzykowski]

seems unrelated, attempting an autospade

[Mike Wyrzykowski]

Pull request: https://github.com/WebKit/WebKit/pull/42887

[Mike Wyrzykowski]

I can't reproduce this issue on M1 Mac Mini or M1 MBA. Just the M1 MBP

[EWS]

Committed 292768@main (8f9f2e70a16d): <https://commits.webkit.org/292768@main>

Reviewed commits have been landed. Closing PR #42887 and removing active labels.