Description:

When trying to run applications (e.g. Autodesk Fusion 360) under Wine with DXVK, shader compilation fails due to unsupported HLSL feature:

Unsupported features:
The following core API features are unsupported:

• Class linkage. Compiling shaders that rely on this feature will fail.
  

This is a known DXVK limitation — DXVK does not support class linkage in Direct3D shaders. Applications depending on it won't run correctly.

Reference:

DXVK FAQ (Unsupported Features):
🔗 https://github.com/doitsujin/dxvk/wiki/Feature-support#unsupported-features