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SPIR-V writing for mesh shaders is broken on llvmpipe #8727

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SPIR-V writing for mesh shaders is broken on llvmpipe#8727
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inner-daemons
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backend: vulkanIssues with Vulkanexternal: driver-bugA driver is causing the bug, though we may still want to work around itfeature: mesh shadersIssues with the Mesh Shading Native Featurelang: SPIR-VVulkan's Shading Languagetype: bugSomething isn't working
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inner-daemons
opened on Dec 14, 2025

Description
Our SPIR-V writer added in #8456 generates code that doesn't work on LLVMPIPE.

This is believed to be a driver bug.

Repro steps
Run tests or check out CI

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backend: vulkanIssues with Vulkanexternal: driver-bugA driver is causing the bug, though we may still want to work around itfeature: mesh shadersIssues with the Mesh Shading Native Featurelang: SPIR-VVulkan's Shading Languagetype: bugSomething isn't working

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