[hlsl-out] Unimplemented Switch

[PolyMeilex]

One of the shaders that is in my dependency tree (wgpu_glyph shader) uses a switch statement, which causes a panic because of unimplemented switch writer in hlsl. It's especially problematic because DX12 is the default wgpu backend on Windows.

naga/src/back/hlsl/writer.rs

Line 1208 in dfcb798

return Err(Error::Unimplemented(format!("write_stmt {:?}", stmt)))