[Bug 54872] New: UAV buffers are not implemented in vkd3d-compiler for sm 5

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54872

Bug ID: 54872
           Summary: UAV buffers are not implemented in vkd3d-compiler for
                    sm 5
           Product: vkd3d
           Version: 1.7
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: hlsl
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Trying to compile a HLSL shader with vkd3d-compiler with any shader model fails
if the shader uses a UAV buffer type (RWBuffer, RWStructuredBuffer,
RWByteAddressBuffer).

These types aren't in the parser, so things fail with something like

`vkd3d-shader-cs-0.hlsl:1:1: E5000: syntax error, unexpected NEW_IDENTIFIER`
Pointing to one of the type names listed above.

An example shader is

```
RWStructuredBuffer<float> foo : register(u0);
[numthreads(1, 1, 1)] void main() {}
```

From the source, it seems like the only UAV types are RWTextures, and there are
codepaths in the compiler which assume that, for example the valid states of
`hlsl_type::sampler_dim`.