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Adds the `snorm10-10-10-2` vertex format to the WebGPU specification and WebIDL definition. by wangra-google · Pull Request #6491 · gpuweb/gpuweb · GitHub

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Adds the snorm10-10-10-2 vertex format to the WebGPU specification and WebIDL definition. - #6491

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kainino0x merged 1 commit into
gpuweb:mainfrom
wangra-google:add-snorm10-10-10-2
Aug 20, 2026
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Adds the snorm10-10-10-2 vertex format to the WebGPU specification and WebIDL definition.#6491
kainino0x merged 1 commit into
gpuweb:mainfrom
wangra-google:add-snorm10-10-10-2

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wangra-google commented Aug 19, 2026

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  • Adds "snorm10-10-10-2" to enum GPUVertexFormat.
  • Adds snorm10-10-10-2 row to the Vertex Formats table (signed normalized, 4 components, 4 bytes,vec4<f32>).

Fixes #6292

Adds the snorm10-10-10-2 vertex format to the WebGPU specification …
562e5d5 
…and WebIDL definition.

* Adds `"snorm10-10-10-2"` to `enum GPUVertexFormat`.
* Adds `snorm10-10-10-2` row to the Vertex Formats table (signed normalized, 4 components, 4 bytes,`vec4<f32>`).

Fixes gpuweb#6292

github-actions Bot commented Aug 19, 2026

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Previews, as seen when this build job started (562e5d5):
WebGPU webgpu.idl | Explainer | Correspondence Reference
WGSL grammar.js | wgsl.lalr.txt

kainino0x mentioned this pull request Aug 20, 2026
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kainino0x approved these changes Aug 20, 2026
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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

LGTM. @jimblandy had mentioned we would need to explain the encoding of this format, but considering we don't do this for any other formats, and the encoding is the same as any other snorm format, I don't think we need it. The CTS already covers the actual testing of its encoding.

We'll resolve the feature detection question later, it's tracked in #5484

kainino0x commented Aug 20, 2026

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Reviewing the minutes I think we have sufficient approval (and tests) to land this. Landing.

kainino0x merged commit da251f9 into gpuweb:main Aug 20, 2026
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kainino0x added api resolved Resolved - waiting for a change to the API specification api WebGPU API labels Aug 20, 2026
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Reconsider "snorm10-10-10-2" vertex format support?

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