2044412 - Unity WebGPU content rendering problems

Status: NEW

(Core :: Graphics: WebGPU, defect)

Description

[Jukka Jylänki]

I am collecting some Unity WebGPU based web test content at https://oummg.com/unity/webgpu/

As of today (2026-06-02), Firefox is able to run 50% of the content so far:

PASS:

• Universal 3D Empty Scene
• Dragon Crashers
• The Red Riding Hood

FAIL:

• Universal 3D Sample
• Fantasy Kingdom
• Viking Village

Comment 1

[Teodor Tanasoaia [:teoxoy]]

My workstation broke down last Thursday so I can't test on Linux nor Windows but here are the failures I'm seeing on macOS:

• Universal 3D Sample looks to be blocked on Bug 2022805 & Bug 1931630.
• Dragon Crashers & Fantasy Kingdom fail due to "Validation: Width 2048 is not a multiple of Astc { block: B6x6, channel: UnormSrgb }'s block width (6)" which seems legitimate; the sizes of textures using compressed formats must be a multiple of the block size of the format.

Comment 2

[Jukka Jylänki]

The ASTC issue is an Unity problem, and can be ignored. It is best to test now only on Windows or Linux (using desktop PC GPUs that do not have native ASTC support)

We have an engineer working on fixing up the ASTC problem. I'll reupload the builds on the site once that is finished. That will enable Android and macOS testing.

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:jimb, could you have a look please?

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