1916145 - [WebGPU] Unreal Engine demo compiled to the web at https://lyra.tiwsamples.com/ does not load

Status: NEW

(Core :: Graphics: WebGPU, defect)

Description

[Mayank Bansal]

Go to https://lyra.tiwsamples.com/

AR: Page does not load completely.

Error message:
11:03:33.397 Uncaught (in promise) TypeError: can't convert BigInt to number
findFirstPositive https://lyra.tiwsamples.com/:283
getCapabilities https://lyra.tiwsamples.com/:566
<anonymous> https://lyra.tiwsamples.com/:1257
<anonymous> https://lyra.tiwsamples.com/:1332
lyra.tiwsamples.com:283:38

Even Chrome does not load the demo completely, but it does proceed further ahead compared to Firefox.

Comment 1

[Erich Gubler [:ErichDonGubler]]

I actually don't get the same error as in the OP; my Windows 11 workstation seems to get beyond this point, and to actual WebGPU API calls. In particular, it fails on:

11:10:41.924 OperationError: requestDevice: Request for limit 'maxBufferSize' must be <= supported 1073741824, was 2147483648. https://lyra.tiwsamples.com/bin/5031519360668192893.js 2 8663719816308830582.html:1:2673

Comment 2

[Mayank Bansal]

Bug 1940019 has some diagnosis for thte BigInt issue.

Comment 3

[Erich Gubler [:ErichDonGubler]]

I'm able to reproduce the same results as in comment 1 on my M1 MacBook Pro.